1 /* NDS32-specific support for 32-bit ELF.
2 Copyright (C) 2012-2016 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
25 #include "bfd_stdint.h"
29 #include "libiberty.h"
30 #include "bfd_stdint.h"
31 #include "elf/nds32.h"
32 #include "opcode/nds32.h"
33 #include "elf32-nds32.h"
34 #include "opcode/cgen.h"
35 #include "../opcodes/nds32-opc.h"
37 /* Relocation HOWTO functions. */
38 static bfd_reloc_status_type nds32_elf_ignore_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type nds32_elf_9_pcrel_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type nds32_elf_hi20_reloc
43 (bfd *, arelent *, asymbol *, void *,
44 asection *, bfd *, char **);
45 static bfd_reloc_status_type nds32_elf_lo12_reloc
46 (bfd *, arelent *, asymbol *, void *,
47 asection *, bfd *, char **);
48 static bfd_reloc_status_type nds32_elf_generic_reloc
49 (bfd *, arelent *, asymbol *, void *,
50 asection *, bfd *, char **);
51 static bfd_reloc_status_type nds32_elf_sda15_reloc
52 (bfd *, arelent *, asymbol *, void *,
53 asection *, bfd *, char **);
55 /* Helper functions for HOWTO. */
56 static bfd_reloc_status_type nds32_elf_do_9_pcrel_reloc
57 (bfd *, reloc_howto_type *, asection *, bfd_byte *, bfd_vma,
58 asection *, bfd_vma, bfd_vma);
59 static void nds32_elf_relocate_hi20
60 (bfd *, int, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, bfd_vma);
61 static reloc_howto_type *bfd_elf32_bfd_reloc_type_table_lookup
62 (enum elf_nds32_reloc_type);
63 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
64 (bfd *, bfd_reloc_code_real_type);
67 static void nds32_info_to_howto_rel
68 (bfd *, arelent *, Elf_Internal_Rela *dst);
69 static void nds32_info_to_howto
70 (bfd *, arelent *, Elf_Internal_Rela *dst);
71 static bfd_boolean nds32_elf_add_symbol_hook
72 (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **,
73 flagword *, asection **, bfd_vma *);
74 static bfd_boolean nds32_elf_relocate_section
75 (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
76 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
77 static bfd_boolean nds32_elf_object_p (bfd *);
78 static void nds32_elf_final_write_processing (bfd *, bfd_boolean);
79 static bfd_boolean nds32_elf_set_private_flags (bfd *, flagword);
80 static bfd_boolean nds32_elf_merge_private_bfd_data
81 (bfd *, struct bfd_link_info *);
82 static bfd_boolean nds32_elf_print_private_bfd_data (bfd *, void *);
83 static bfd_boolean nds32_elf_gc_sweep_hook
84 (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
85 static bfd_boolean nds32_elf_check_relocs
86 (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
87 static asection *nds32_elf_gc_mark_hook
88 (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
89 struct elf_link_hash_entry *, Elf_Internal_Sym *);
90 static bfd_boolean nds32_elf_adjust_dynamic_symbol
91 (struct bfd_link_info *, struct elf_link_hash_entry *);
92 static bfd_boolean nds32_elf_size_dynamic_sections
93 (bfd *, struct bfd_link_info *);
94 static bfd_boolean nds32_elf_create_dynamic_sections
95 (bfd *, struct bfd_link_info *);
96 static bfd_boolean nds32_elf_finish_dynamic_sections
97 (bfd *, struct bfd_link_info *info);
98 static bfd_boolean nds32_elf_finish_dynamic_symbol
99 (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
101 static bfd_boolean nds32_elf_mkobject (bfd *);
103 /* Nds32 helper functions. */
104 static bfd_reloc_status_type nds32_elf_final_sda_base
105 (bfd *, struct bfd_link_info *, bfd_vma *, bfd_boolean);
106 static bfd_boolean allocate_dynrelocs (struct elf_link_hash_entry *, void *);
107 static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *, void *);
108 static Elf_Internal_Rela *find_relocs_at_address
109 (Elf_Internal_Rela *, Elf_Internal_Rela *,
110 Elf_Internal_Rela *, enum elf_nds32_reloc_type);
111 static bfd_vma calculate_memory_address
112 (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *);
113 static int nds32_get_section_contents (bfd *, asection *,
114 bfd_byte **, bfd_boolean);
115 static bfd_boolean nds32_elf_ex9_build_hash_table
116 (bfd *, asection *, struct bfd_link_info *);
117 static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *);
118 static void nds32_elf_ex9_import_table (struct bfd_link_info *);
119 static void nds32_elf_ex9_finish (struct bfd_link_info *);
120 static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *);
121 static void nds32_elf_get_insn_with_reg
122 (Elf_Internal_Rela *, uint32_t, uint32_t *);
123 static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED,
124 Elf_Internal_Sym **);
125 static bfd_boolean nds32_elf_ex9_replace_instruction
126 (struct bfd_link_info *, bfd *, asection *);
127 static bfd_boolean nds32_elf_ifc_calc (struct bfd_link_info *, bfd *,
129 static bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *);
130 static bfd_boolean nds32_elf_ifc_replace (struct bfd_link_info *);
131 static bfd_boolean nds32_elf_ifc_reloc (void);
132 static bfd_boolean nds32_relax_fp_as_gp
133 (struct bfd_link_info *link_info, bfd *abfd, asection *sec,
134 Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend,
135 Elf_Internal_Sym *isymbuf);
136 static bfd_boolean nds32_fag_remove_unused_fpbase
137 (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs,
138 Elf_Internal_Rela *irelend);
140 nds32_elf_get_relocated_section_contents (bfd *abfd,
141 struct bfd_link_info *link_info,
142 struct bfd_link_order *link_order,
144 bfd_boolean relocatable,
149 MACH_V1 = bfd_mach_n1h,
150 MACH_V2 = bfd_mach_n1h_v2,
151 MACH_V3 = bfd_mach_n1h_v3,
152 MACH_V3M = bfd_mach_n1h_v3m
155 #define MIN(a, b) ((a) > (b) ? (b) : (a))
156 #define MAX(a, b) ((a) > (b) ? (a) : (b))
158 /* The name of the dynamic interpreter. This is put in the .interp
160 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
162 /* The nop opcode we use. */
163 #define NDS32_NOP32 0x40000009
164 #define NDS32_NOP16 0x9200
166 /* The size in bytes of an entry in the procedure linkage table. */
167 #define PLT_ENTRY_SIZE 24
168 #define PLT_HEADER_SIZE 24
170 /* The first entry in a procedure linkage table are reserved,
171 and the initial contents are unimportant (we zero them out).
172 Subsequent entries look like this. */
173 #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */
174 #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */
175 #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */
176 #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */
177 #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */
179 /* $ta is change to $r15 (from $r25). */
180 #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */
181 #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */
182 #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */
183 #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */
184 #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */
185 #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */
187 #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */
188 #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */
189 #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */
190 #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */
191 #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */
193 #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */
194 #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */
195 #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */
196 #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */
197 #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */
198 #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */
200 /* These are macros used to get the relocation accurate value. */
201 #define ACCURATE_8BIT_S1 (0x100)
202 #define ACCURATE_U9BIT_S1 (0x400)
203 #define ACCURATE_12BIT_S1 (0x2000)
204 #define ACCURATE_14BIT_S1 (0x4000)
205 #define ACCURATE_19BIT (0x40000)
207 /* These are macros used to get the relocation conservative value. */
208 #define CONSERVATIVE_8BIT_S1 (0x100 - 4)
209 #define CONSERVATIVE_14BIT_S1 (0x4000 - 4)
210 #define CONSERVATIVE_16BIT_S1 (0x10000 - 4)
211 #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4)
212 /* These must be more conservative because the address may be in
213 different segment. */
214 #define CONSERVATIVE_15BIT (0x4000 - 0x1000)
215 #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000)
216 #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000)
217 #define CONSERVATIVE_19BIT (0x40000 - 0x1000)
218 #define CONSERVATIVE_20BIT (0x80000 - 0x1000)
220 /* Size of small data/bss sections, used to calculate SDA_BASE. */
221 static long got_size = 0;
222 static int is_SDA_BASE_set = 0;
223 static int is_ITB_BASE_set = 0;
225 /* Convert ELF-VER in eflags to string for debugging purpose. */
226 static const char *const nds32_elfver_strtab[] =
233 /* The nds32 linker needs to keep track of the number of relocs that it
234 decides to copy in check_relocs for each symbol. This is so that
235 it can discard PC relative relocs if it doesn't need them when
236 linking with -Bsymbolic. We store the information in a field
237 extending the regular ELF linker hash table. */
239 /* This structure keeps track of the number of PC relative relocs we
240 have copied for a given symbol. */
242 struct elf_nds32_pcrel_relocs_copied
245 struct elf_nds32_pcrel_relocs_copied *next;
246 /* A section in dynobj. */
248 /* Number of relocs copied in this section. */
252 /* The sh linker needs to keep track of the number of relocs that it
253 decides to copy as dynamic relocs in check_relocs for each symbol.
254 This is so that it can later discard them if they are found to be
255 unnecessary. We store the information in a field extending the
256 regular ELF linker hash table. */
258 struct elf_nds32_dyn_relocs
260 struct elf_nds32_dyn_relocs *next;
262 /* The input section of the reloc. */
265 /* Total number of relocs copied for the input section. */
268 /* Number of pc-relative relocs copied for the input section. */
269 bfd_size_type pc_count;
272 /* Nds32 ELF linker hash entry. */
274 struct elf_nds32_link_hash_entry
276 struct elf_link_hash_entry root;
278 /* Track dynamic relocs copied for this symbol. */
279 struct elf_nds32_dyn_relocs *dyn_relocs;
281 /* For checking relocation type. */
282 #define GOT_UNKNOWN 0
285 unsigned int tls_type;
288 /* Get the nds32 ELF linker hash table from a link_info structure. */
290 #define FP_BASE_NAME "_FP_BASE_"
291 static int check_start_export_sym = 0;
292 static size_t ex9_relax_size = 0; /* Save ex9 predicted reducing size. */
294 /* The offset for executable tls relaxation. */
295 #define TP_OFFSET 0x0
297 struct elf_nds32_obj_tdata
299 struct elf_obj_tdata root;
301 /* tls_type for each local got entry. */
302 char *local_got_tls_type;
305 #define elf_nds32_tdata(bfd) \
306 ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any)
308 #define elf32_nds32_local_got_tls_type(bfd) \
309 (elf_nds32_tdata (bfd)->local_got_tls_type)
311 #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent))
314 nds32_elf_mkobject (bfd *abfd)
316 return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata),
320 /* Relocations used for relocation. */
321 static reloc_howto_type nds32_elf_howto_table[] =
323 /* This reloc does nothing. */
324 HOWTO (R_NDS32_NONE, /* type */
326 3, /* size (0 = byte, 1 = short, 2 = long) */
328 FALSE, /* pc_relative */
330 complain_overflow_dont, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* special_function */
332 "R_NDS32_NONE", /* name */
333 FALSE, /* partial_inplace */
336 FALSE), /* pcrel_offset */
338 /* A 16 bit absolute relocation. */
339 HOWTO (R_NDS32_16, /* type */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
343 FALSE, /* pc_relative */
345 complain_overflow_bitfield, /* complain_on_overflow */
346 nds32_elf_generic_reloc, /* special_function */
347 "R_NDS32_16", /* name */
348 FALSE, /* partial_inplace */
349 0xffff, /* src_mask */
350 0xffff, /* dst_mask */
351 FALSE), /* pcrel_offset */
353 /* A 32 bit absolute relocation. */
354 HOWTO (R_NDS32_32, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE, /* pc_relative */
360 complain_overflow_bitfield, /* complain_on_overflow */
361 nds32_elf_generic_reloc, /* special_function */
362 "R_NDS32_32", /* name */
363 FALSE, /* partial_inplace */
364 0xffffffff, /* src_mask */
365 0xffffffff, /* dst_mask */
366 FALSE), /* pcrel_offset */
368 /* A 20 bit address. */
369 HOWTO (R_NDS32_20, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 FALSE, /* pc_relative */
375 complain_overflow_unsigned, /* complain_on_overflow */
376 nds32_elf_generic_reloc, /* special_function */
377 "R_NDS32_20", /* name */
378 FALSE, /* partial_inplace */
379 0xfffff, /* src_mask */
380 0xfffff, /* dst_mask */
381 FALSE), /* pcrel_offset */
383 /* An PC Relative 9-bit relocation, shifted by 2.
384 This reloc is complicated because relocations are relative to pc & -4.
385 i.e. branches in the right insn slot use the address of the left insn
387 /* ??? It's not clear whether this should have partial_inplace set or not.
388 Branch relaxing in the assembler can store the addend in the insn,
389 and if bfd_install_relocation gets called the addend may get added
391 HOWTO (R_NDS32_9_PCREL, /* type */
393 1, /* size (0 = byte, 1 = short, 2 = long) */
395 TRUE, /* pc_relative */
397 complain_overflow_signed, /* complain_on_overflow */
398 nds32_elf_9_pcrel_reloc, /* special_function */
399 "R_NDS32_9_PCREL", /* name */
400 FALSE, /* partial_inplace */
403 TRUE), /* pcrel_offset */
405 /* A relative 15 bit relocation, right shifted by 1. */
406 HOWTO (R_NDS32_15_PCREL, /* type */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
410 TRUE, /* pc_relative */
412 complain_overflow_signed, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_NDS32_15_PCREL", /* name */
415 FALSE, /* partial_inplace */
416 0x3fff, /* src_mask */
417 0x3fff, /* dst_mask */
418 TRUE), /* pcrel_offset */
420 /* A relative 17 bit relocation, right shifted by 1. */
421 HOWTO (R_NDS32_17_PCREL, /* type */
423 2, /* size (0 = byte, 1 = short, 2 = long) */
425 TRUE, /* pc_relative */
427 complain_overflow_signed, /* complain_on_overflow */
428 bfd_elf_generic_reloc, /* special_function */
429 "R_NDS32_17_PCREL", /* name */
430 FALSE, /* partial_inplace */
431 0xffff, /* src_mask */
432 0xffff, /* dst_mask */
433 TRUE), /* pcrel_offset */
435 /* A relative 25 bit relocation, right shifted by 1. */
436 /* ??? It's not clear whether this should have partial_inplace set or not.
437 Branch relaxing in the assembler can store the addend in the insn,
438 and if bfd_install_relocation gets called the addend may get added
440 HOWTO (R_NDS32_25_PCREL, /* type */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
444 TRUE, /* pc_relative */
446 complain_overflow_signed, /* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_NDS32_25_PCREL", /* name */
449 FALSE, /* partial_inplace */
450 0xffffff, /* src_mask */
451 0xffffff, /* dst_mask */
452 TRUE), /* pcrel_offset */
454 /* High 20 bits of address when lower 12 is or'd in. */
455 HOWTO (R_NDS32_HI20, /* type */
457 2, /* size (0 = byte, 1 = short, 2 = long) */
459 FALSE, /* pc_relative */
461 complain_overflow_dont,/* complain_on_overflow */
462 nds32_elf_hi20_reloc, /* special_function */
463 "R_NDS32_HI20", /* name */
464 FALSE, /* partial_inplace */
465 0x000fffff, /* src_mask */
466 0x000fffff, /* dst_mask */
467 FALSE), /* pcrel_offset */
469 /* Lower 12 bits of address. */
470 HOWTO (R_NDS32_LO12S3, /* type */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
474 FALSE, /* pc_relative */
476 complain_overflow_dont,/* complain_on_overflow */
477 nds32_elf_lo12_reloc, /* special_function */
478 "R_NDS32_LO12S3", /* name */
479 FALSE, /* partial_inplace */
480 0x000001ff, /* src_mask */
481 0x000001ff, /* dst_mask */
482 FALSE), /* pcrel_offset */
484 /* Lower 12 bits of address. */
485 HOWTO (R_NDS32_LO12S2, /* type */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE, /* pc_relative */
491 complain_overflow_dont,/* complain_on_overflow */
492 nds32_elf_lo12_reloc, /* special_function */
493 "R_NDS32_LO12S2", /* name */
494 FALSE, /* partial_inplace */
495 0x000003ff, /* src_mask */
496 0x000003ff, /* dst_mask */
497 FALSE), /* pcrel_offset */
499 /* Lower 12 bits of address. */
500 HOWTO (R_NDS32_LO12S1, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 nds32_elf_lo12_reloc, /* special_function */
508 "R_NDS32_LO12S1", /* name */
509 FALSE, /* partial_inplace */
510 0x000007ff, /* src_mask */
511 0x000007ff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* Lower 12 bits of address. */
515 HOWTO (R_NDS32_LO12S0, /* type */
517 2, /* size (0 = byte, 1 = short, 2 = long) */
519 FALSE, /* pc_relative */
521 complain_overflow_dont,/* complain_on_overflow */
522 nds32_elf_lo12_reloc, /* special_function */
523 "R_NDS32_LO12S0", /* name */
524 FALSE, /* partial_inplace */
525 0x00000fff, /* src_mask */
526 0x00000fff, /* dst_mask */
527 FALSE), /* pcrel_offset */
529 /* Small data area 15 bits offset. */
530 HOWTO (R_NDS32_SDA15S3, /* type */
532 2, /* size (0 = byte, 1 = short, 2 = long) */
534 FALSE, /* pc_relative */
536 complain_overflow_signed, /* complain_on_overflow */
537 nds32_elf_sda15_reloc, /* special_function */
538 "R_NDS32_SDA15S3", /* name */
539 FALSE, /* partial_inplace */
540 0x00007fff, /* src_mask */
541 0x00007fff, /* dst_mask */
542 FALSE), /* pcrel_offset */
544 /* Small data area 15 bits offset. */
545 HOWTO (R_NDS32_SDA15S2, /* type */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
549 FALSE, /* pc_relative */
551 complain_overflow_signed, /* complain_on_overflow */
552 nds32_elf_sda15_reloc, /* special_function */
553 "R_NDS32_SDA15S2", /* name */
554 FALSE, /* partial_inplace */
555 0x00007fff, /* src_mask */
556 0x00007fff, /* dst_mask */
557 FALSE), /* pcrel_offset */
559 /* Small data area 15 bits offset. */
560 HOWTO (R_NDS32_SDA15S1, /* type */
562 2, /* size (0 = byte, 1 = short, 2 = long) */
564 FALSE, /* pc_relative */
566 complain_overflow_signed, /* complain_on_overflow */
567 nds32_elf_sda15_reloc, /* special_function */
568 "R_NDS32_SDA15S1", /* name */
569 FALSE, /* partial_inplace */
570 0x00007fff, /* src_mask */
571 0x00007fff, /* dst_mask */
572 FALSE), /* pcrel_offset */
574 /* Small data area 15 bits offset. */
575 HOWTO (R_NDS32_SDA15S0, /* type */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
579 FALSE, /* pc_relative */
581 complain_overflow_signed, /* complain_on_overflow */
582 nds32_elf_sda15_reloc, /* special_function */
583 "R_NDS32_SDA15S0", /* name */
584 FALSE, /* partial_inplace */
585 0x00007fff, /* src_mask */
586 0x00007fff, /* dst_mask */
587 FALSE), /* pcrel_offset */
589 /* GNU extension to record C++ vtable hierarchy */
590 HOWTO (R_NDS32_GNU_VTINHERIT, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_dont,/* complain_on_overflow */
597 NULL, /* special_function */
598 "R_NDS32_GNU_VTINHERIT", /* name */
599 FALSE, /* partial_inplace */
602 FALSE), /* pcrel_offset */
604 /* GNU extension to record C++ vtable member usage */
605 HOWTO (R_NDS32_GNU_VTENTRY, /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 FALSE, /* pc_relative */
611 complain_overflow_dont,/* complain_on_overflow */
612 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
613 "R_NDS32_GNU_VTENTRY", /* name */
614 FALSE, /* partial_inplace */
617 FALSE), /* pcrel_offset */
619 /* A 16 bit absolute relocation. */
620 HOWTO (R_NDS32_16_RELA, /* type */
622 1, /* size (0 = byte, 1 = short, 2 = long) */
624 FALSE, /* pc_relative */
626 complain_overflow_bitfield, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_NDS32_16_RELA", /* name */
629 FALSE, /* partial_inplace */
630 0xffff, /* src_mask */
631 0xffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
634 /* A 32 bit absolute relocation. */
635 HOWTO (R_NDS32_32_RELA, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 FALSE, /* pc_relative */
641 complain_overflow_bitfield, /* complain_on_overflow */
642 bfd_elf_generic_reloc, /* special_function */
643 "R_NDS32_32_RELA", /* name */
644 FALSE, /* partial_inplace */
645 0xffffffff, /* src_mask */
646 0xffffffff, /* dst_mask */
647 FALSE), /* pcrel_offset */
649 /* A 20 bit address. */
650 HOWTO (R_NDS32_20_RELA, /* type */
652 2, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_signed, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_NDS32_20_RELA", /* name */
659 FALSE, /* partial_inplace */
660 0xfffff, /* src_mask */
661 0xfffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 HOWTO (R_NDS32_9_PCREL_RELA, /* type */
666 1, /* size (0 = byte, 1 = short, 2 = long) */
668 TRUE, /* pc_relative */
670 complain_overflow_signed, /* complain_on_overflow */
671 bfd_elf_generic_reloc, /* special_function */
672 "R_NDS32_9_PCREL_RELA",/* name */
673 FALSE, /* partial_inplace */
676 TRUE), /* pcrel_offset */
678 /* A relative 15 bit relocation, right shifted by 1. */
679 HOWTO (R_NDS32_15_PCREL_RELA, /* type */
681 2, /* size (0 = byte, 1 = short, 2 = long) */
683 TRUE, /* pc_relative */
685 complain_overflow_signed, /* complain_on_overflow */
686 bfd_elf_generic_reloc, /* special_function */
687 "R_NDS32_15_PCREL_RELA", /* name */
688 FALSE, /* partial_inplace */
689 0x3fff, /* src_mask */
690 0x3fff, /* dst_mask */
691 TRUE), /* pcrel_offset */
693 /* A relative 17 bit relocation, right shifted by 1. */
694 HOWTO (R_NDS32_17_PCREL_RELA, /* type */
696 2, /* size (0 = byte, 1 = short, 2 = long) */
698 TRUE, /* pc_relative */
700 complain_overflow_signed, /* complain_on_overflow */
701 bfd_elf_generic_reloc, /* special_function */
702 "R_NDS32_17_PCREL_RELA", /* name */
703 FALSE, /* partial_inplace */
704 0xffff, /* src_mask */
705 0xffff, /* dst_mask */
706 TRUE), /* pcrel_offset */
708 /* A relative 25 bit relocation, right shifted by 2. */
709 HOWTO (R_NDS32_25_PCREL_RELA, /* type */
711 2, /* size (0 = byte, 1 = short, 2 = long) */
713 TRUE, /* pc_relative */
715 complain_overflow_signed, /* complain_on_overflow */
716 bfd_elf_generic_reloc, /* special_function */
717 "R_NDS32_25_PCREL_RELA", /* name */
718 FALSE, /* partial_inplace */
719 0xffffff, /* src_mask */
720 0xffffff, /* dst_mask */
721 TRUE), /* pcrel_offset */
723 /* High 20 bits of address when lower 16 is or'd in. */
724 HOWTO (R_NDS32_HI20_RELA, /* type */
726 2, /* size (0 = byte, 1 = short, 2 = long) */
728 FALSE, /* pc_relative */
730 complain_overflow_dont,/* complain_on_overflow */
731 bfd_elf_generic_reloc, /* special_function */
732 "R_NDS32_HI20_RELA", /* name */
733 FALSE, /* partial_inplace */
734 0x000fffff, /* src_mask */
735 0x000fffff, /* dst_mask */
736 FALSE), /* pcrel_offset */
738 /* Lower 12 bits of address. */
739 HOWTO (R_NDS32_LO12S3_RELA, /* type */
741 2, /* size (0 = byte, 1 = short, 2 = long) */
743 FALSE, /* pc_relative */
745 complain_overflow_dont,/* complain_on_overflow */
746 bfd_elf_generic_reloc, /* special_function */
747 "R_NDS32_LO12S3_RELA", /* name */
748 FALSE, /* partial_inplace */
749 0x000001ff, /* src_mask */
750 0x000001ff, /* dst_mask */
751 FALSE), /* pcrel_offset */
753 /* Lower 12 bits of address. */
754 HOWTO (R_NDS32_LO12S2_RELA, /* type */
756 2, /* size (0 = byte, 1 = short, 2 = long) */
758 FALSE, /* pc_relative */
760 complain_overflow_dont,/* complain_on_overflow */
761 bfd_elf_generic_reloc, /* special_function */
762 "R_NDS32_LO12S2_RELA", /* name */
763 FALSE, /* partial_inplace */
764 0x000003ff, /* src_mask */
765 0x000003ff, /* dst_mask */
766 FALSE), /* pcrel_offset */
768 /* Lower 12 bits of address. */
769 HOWTO (R_NDS32_LO12S1_RELA, /* type */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
773 FALSE, /* pc_relative */
775 complain_overflow_dont,/* complain_on_overflow */
776 bfd_elf_generic_reloc, /* special_function */
777 "R_NDS32_LO12S1_RELA", /* name */
778 FALSE, /* partial_inplace */
779 0x000007ff, /* src_mask */
780 0x000007ff, /* dst_mask */
781 FALSE), /* pcrel_offset */
783 /* Lower 12 bits of address. */
784 HOWTO (R_NDS32_LO12S0_RELA, /* type */
786 2, /* size (0 = byte, 1 = short, 2 = long) */
788 FALSE, /* pc_relative */
790 complain_overflow_dont,/* complain_on_overflow */
791 bfd_elf_generic_reloc, /* special_function */
792 "R_NDS32_LO12S0_RELA", /* name */
793 FALSE, /* partial_inplace */
794 0x00000fff, /* src_mask */
795 0x00000fff, /* dst_mask */
796 FALSE), /* pcrel_offset */
798 /* Small data area 15 bits offset. */
799 HOWTO (R_NDS32_SDA15S3_RELA, /* type */
801 2, /* size (0 = byte, 1 = short, 2 = long) */
803 FALSE, /* pc_relative */
805 complain_overflow_signed, /* complain_on_overflow */
806 bfd_elf_generic_reloc, /* special_function */
807 "R_NDS32_SDA15S3_RELA",/* name */
808 FALSE, /* partial_inplace */
809 0x00007fff, /* src_mask */
810 0x00007fff, /* dst_mask */
811 FALSE), /* pcrel_offset */
813 /* Small data area 15 bits offset. */
814 HOWTO (R_NDS32_SDA15S2_RELA, /* type */
816 2, /* size (0 = byte, 1 = short, 2 = long) */
818 FALSE, /* pc_relative */
820 complain_overflow_signed, /* complain_on_overflow */
821 bfd_elf_generic_reloc, /* special_function */
822 "R_NDS32_SDA15S2_RELA",/* name */
823 FALSE, /* partial_inplace */
824 0x00007fff, /* src_mask */
825 0x00007fff, /* dst_mask */
826 FALSE), /* pcrel_offset */
828 HOWTO (R_NDS32_SDA15S1_RELA, /* type */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE, /* pc_relative */
834 complain_overflow_signed, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_NDS32_SDA15S1_RELA",/* name */
837 FALSE, /* partial_inplace */
838 0x00007fff, /* src_mask */
839 0x00007fff, /* dst_mask */
840 FALSE), /* pcrel_offset */
842 HOWTO (R_NDS32_SDA15S0_RELA, /* type */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE, /* pc_relative */
848 complain_overflow_signed, /* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_NDS32_SDA15S0_RELA",/* name */
851 FALSE, /* partial_inplace */
852 0x00007fff, /* src_mask */
853 0x00007fff, /* dst_mask */
854 FALSE), /* pcrel_offset */
856 /* GNU extension to record C++ vtable hierarchy */
857 HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */
859 2, /* size (0 = byte, 1 = short, 2 = long) */
861 FALSE, /* pc_relative */
863 complain_overflow_dont,/* complain_on_overflow */
864 NULL, /* special_function */
865 "R_NDS32_RELA_GNU_VTINHERIT", /* name */
866 FALSE, /* partial_inplace */
869 FALSE), /* pcrel_offset */
871 /* GNU extension to record C++ vtable member usage */
872 HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */
874 2, /* size (0 = byte, 1 = short, 2 = long) */
876 FALSE, /* pc_relative */
878 complain_overflow_dont,/* complain_on_overflow */
879 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
880 "R_NDS32_RELA_GNU_VTENTRY", /* name */
881 FALSE, /* partial_inplace */
884 FALSE), /* pcrel_offset */
886 /* Like R_NDS32_20, but referring to the GOT table entry for
888 HOWTO (R_NDS32_GOT20, /* type */
890 2, /* size (0 = byte, 1 = short, 2 = long) */
892 FALSE, /* pc_relative */
894 complain_overflow_signed, /* complain_on_overflow */
895 bfd_elf_generic_reloc, /* special_function */
896 "R_NDS32_GOT20", /* name */
897 FALSE, /* partial_inplace */
898 0xfffff, /* src_mask */
899 0xfffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
902 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
903 entry for the symbol. */
904 HOWTO (R_NDS32_25_PLTREL, /* type */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 TRUE, /* pc_relative */
910 complain_overflow_signed, /* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
912 "R_NDS32_25_PLTREL", /* name */
913 FALSE, /* partial_inplace */
914 0xffffff, /* src_mask */
915 0xffffff, /* dst_mask */
916 TRUE), /* pcrel_offset */
918 /* This is used only by the dynamic linker. The symbol should exist
919 both in the object being run and in some shared library. The
920 dynamic linker copies the data addressed by the symbol from the
921 shared library into the object, because the object being
922 run has to have the data at some particular address. */
923 HOWTO (R_NDS32_COPY, /* type */
925 2, /* size (0 = byte, 1 = short, 2 = long) */
927 FALSE, /* pc_relative */
929 complain_overflow_bitfield, /* complain_on_overflow */
930 bfd_elf_generic_reloc, /* special_function */
931 "R_NDS32_COPY", /* name */
932 FALSE, /* partial_inplace */
933 0xffffffff, /* src_mask */
934 0xffffffff, /* dst_mask */
935 FALSE), /* pcrel_offset */
937 /* Like R_NDS32_20, but used when setting global offset table
939 HOWTO (R_NDS32_GLOB_DAT, /* type */
941 2, /* size (0 = byte, 1 = short, 2 = long) */
943 FALSE, /* pc_relative */
945 complain_overflow_bitfield, /* complain_on_overflow */
946 bfd_elf_generic_reloc, /* special_function */
947 "R_NDS32_GLOB_DAT", /* name */
948 FALSE, /* partial_inplace */
949 0xffffffff, /* src_mask */
950 0xffffffff, /* dst_mask */
951 FALSE), /* pcrel_offset */
953 /* Marks a procedure linkage table entry for a symbol. */
954 HOWTO (R_NDS32_JMP_SLOT, /* type */
956 2, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_bitfield, /* complain_on_overflow */
961 bfd_elf_generic_reloc, /* special_function */
962 "R_NDS32_JMP_SLOT", /* name */
963 FALSE, /* partial_inplace */
964 0xffffffff, /* src_mask */
965 0xffffffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* Used only by the dynamic linker. When the object is run, this
969 longword is set to the load address of the object, plus the
971 HOWTO (R_NDS32_RELATIVE, /* type */
973 2, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_bitfield, /* complain_on_overflow */
978 bfd_elf_generic_reloc, /* special_function */
979 "R_NDS32_RELATIVE", /* name */
980 FALSE, /* partial_inplace */
981 0xffffffff, /* src_mask */
982 0xffffffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 HOWTO (R_NDS32_GOTOFF, /* type */
987 2, /* size (0 = byte, 1 = short, 2 = long) */
989 FALSE, /* pc_relative */
991 complain_overflow_signed, /* complain_on_overflow */
992 bfd_elf_generic_reloc, /* special_function */
993 "R_NDS32_GOTOFF", /* name */
994 FALSE, /* partial_inplace */
995 0xfffff, /* src_mask */
996 0xfffff, /* dst_mask */
997 FALSE), /* pcrel_offset */
999 /* An PC Relative 20-bit relocation used when setting PIC offset
1001 HOWTO (R_NDS32_GOTPC20, /* type */
1003 2, /* size (0 = byte, 1 = short, 2 = long) */
1005 TRUE, /* pc_relative */
1007 complain_overflow_signed, /* complain_on_overflow */
1008 bfd_elf_generic_reloc, /* special_function */
1009 "R_NDS32_GOTPC20", /* name */
1010 FALSE, /* partial_inplace */
1011 0xfffff, /* src_mask */
1012 0xfffff, /* dst_mask */
1013 TRUE), /* pcrel_offset */
1015 /* Like R_NDS32_HI20, but referring to the GOT table entry for
1017 HOWTO (R_NDS32_GOT_HI20, /* type */
1018 12, /* rightshift */
1019 2, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE, /* pc_relative */
1023 complain_overflow_dont,/* complain_on_overflow */
1024 bfd_elf_generic_reloc, /* special_function */
1025 "R_NDS32_GOT_HI20", /* name */
1026 FALSE, /* partial_inplace */
1027 0x000fffff, /* src_mask */
1028 0x000fffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1030 HOWTO (R_NDS32_GOT_LO12, /* type */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 FALSE, /* pc_relative */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_NDS32_GOT_LO12", /* name */
1039 FALSE, /* partial_inplace */
1040 0x00000fff, /* src_mask */
1041 0x00000fff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1044 /* An PC Relative relocation used when setting PIC offset table register.
1045 Like R_NDS32_HI20, but referring to the GOT table entry for
1047 HOWTO (R_NDS32_GOTPC_HI20, /* type */
1048 12, /* rightshift */
1049 2, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_dont,/* complain_on_overflow */
1054 bfd_elf_generic_reloc, /* special_function */
1055 "R_NDS32_GOTPC_HI20", /* name */
1056 FALSE, /* partial_inplace */
1057 0x000fffff, /* src_mask */
1058 0x000fffff, /* dst_mask */
1059 TRUE), /* pcrel_offset */
1060 HOWTO (R_NDS32_GOTPC_LO12, /* type */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE, /* pc_relative */
1066 complain_overflow_dont, /* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 "R_NDS32_GOTPC_LO12", /* name */
1069 FALSE, /* partial_inplace */
1070 0x00000fff, /* src_mask */
1071 0x00000fff, /* dst_mask */
1072 TRUE), /* pcrel_offset */
1074 HOWTO (R_NDS32_GOTOFF_HI20, /* type */
1075 12, /* rightshift */
1076 2, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE, /* pc_relative */
1080 complain_overflow_dont,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_NDS32_GOTOFF_HI20", /* name */
1083 FALSE, /* partial_inplace */
1084 0x000fffff, /* src_mask */
1085 0x000fffff, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1087 HOWTO (R_NDS32_GOTOFF_LO12, /* type */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE, /* pc_relative */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 bfd_elf_generic_reloc, /* special_function */
1095 "R_NDS32_GOTOFF_LO12", /* name */
1096 FALSE, /* partial_inplace */
1097 0x00000fff, /* src_mask */
1098 0x00000fff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1101 /* Alignment hint for relaxable instruction. This is used with
1102 R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2
1103 in order to make next label aligned on word boundary. */
1104 HOWTO (R_NDS32_INSN16, /* type */
1106 2, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_dont,/* complain_on_overflow */
1111 nds32_elf_ignore_reloc,/* special_function */
1112 "R_NDS32_INSN16", /* name */
1113 FALSE, /* partial_inplace */
1114 0x00000fff, /* src_mask */
1115 0x00000fff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 /* Alignment hint for label. */
1119 HOWTO (R_NDS32_LABEL, /* type */
1121 2, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_dont,/* complain_on_overflow */
1126 nds32_elf_ignore_reloc,/* special_function */
1127 "R_NDS32_LABEL", /* name */
1128 FALSE, /* partial_inplace */
1129 0xffffffff, /* src_mask */
1130 0xffffffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Relax hint for unconditional call sequence */
1134 HOWTO (R_NDS32_LONGCALL1, /* type */
1136 2, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_dont,/* complain_on_overflow */
1141 nds32_elf_ignore_reloc,/* special_function */
1142 "R_NDS32_LONGCALL1", /* name */
1143 FALSE, /* partial_inplace */
1144 0xffffffff, /* src_mask */
1145 0xffffffff, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Relax hint for conditional call sequence. */
1149 HOWTO (R_NDS32_LONGCALL2, /* type */
1151 2, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont,/* complain_on_overflow */
1156 nds32_elf_ignore_reloc,/* special_function */
1157 "R_NDS32_LONGCALL2", /* name */
1158 FALSE, /* partial_inplace */
1159 0xffffffff, /* src_mask */
1160 0xffffffff, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Relax hint for conditional call sequence. */
1164 HOWTO (R_NDS32_LONGCALL3, /* type */
1166 2, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE, /* pc_relative */
1170 complain_overflow_dont,/* complain_on_overflow */
1171 nds32_elf_ignore_reloc,/* special_function */
1172 "R_NDS32_LONGCALL3", /* name */
1173 FALSE, /* partial_inplace */
1174 0xffffffff, /* src_mask */
1175 0xffffffff, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1178 /* Relax hint for unconditional branch sequence. */
1179 HOWTO (R_NDS32_LONGJUMP1, /* type */
1181 2, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE, /* pc_relative */
1185 complain_overflow_dont,/* complain_on_overflow */
1186 nds32_elf_ignore_reloc,/* special_function */
1187 "R_NDS32_LONGJUMP1", /* name */
1188 FALSE, /* partial_inplace */
1189 0xffffffff, /* src_mask */
1190 0xffffffff, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1193 /* Relax hint for conditional branch sequence. */
1194 HOWTO (R_NDS32_LONGJUMP2, /* type */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE, /* pc_relative */
1200 complain_overflow_dont,/* complain_on_overflow */
1201 nds32_elf_ignore_reloc,/* special_function */
1202 "R_NDS32_LONGJUMP2", /* name */
1203 FALSE, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1208 /* Relax hint for conditional branch sequence. */
1209 HOWTO (R_NDS32_LONGJUMP3, /* type */
1211 2, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE, /* pc_relative */
1215 complain_overflow_dont,/* complain_on_overflow */
1216 nds32_elf_ignore_reloc,/* special_function */
1217 "R_NDS32_LONGJUMP3", /* name */
1218 FALSE, /* partial_inplace */
1219 0xffffffff, /* src_mask */
1220 0xffffffff, /* dst_mask */
1221 FALSE), /* pcrel_offset */
1223 /* Relax hint for load/store sequence. */
1224 HOWTO (R_NDS32_LOADSTORE, /* type */
1226 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 FALSE, /* pc_relative */
1230 complain_overflow_dont,/* complain_on_overflow */
1231 nds32_elf_ignore_reloc,/* special_function */
1232 "R_NDS32_LOADSTORE", /* name */
1233 FALSE, /* partial_inplace */
1234 0xffffffff, /* src_mask */
1235 0xffffffff, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1238 /* Relax hint for load/store sequence. */
1239 HOWTO (R_NDS32_9_FIXED_RELA, /* type */
1241 1, /* size (0 = byte, 1 = short, 2 = long) */
1243 FALSE, /* pc_relative */
1245 complain_overflow_dont,/* complain_on_overflow */
1246 nds32_elf_ignore_reloc,/* special_function */
1247 "R_NDS32_9_FIXED_RELA",/* name */
1248 FALSE, /* partial_inplace */
1249 0x000000ff, /* src_mask */
1250 0x000000ff, /* dst_mask */
1251 FALSE), /* pcrel_offset */
1253 /* Relax hint for load/store sequence. */
1254 HOWTO (R_NDS32_15_FIXED_RELA, /* type */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE, /* pc_relative */
1260 complain_overflow_dont,/* complain_on_overflow */
1261 nds32_elf_ignore_reloc,/* special_function */
1262 "R_NDS32_15_FIXED_RELA", /* name */
1263 FALSE, /* partial_inplace */
1264 0x00003fff, /* src_mask */
1265 0x00003fff, /* dst_mask */
1266 FALSE), /* pcrel_offset */
1268 /* Relax hint for load/store sequence. */
1269 HOWTO (R_NDS32_17_FIXED_RELA, /* type */
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE, /* pc_relative */
1275 complain_overflow_dont,/* complain_on_overflow */
1276 nds32_elf_ignore_reloc,/* special_function */
1277 "R_NDS32_17_FIXED_RELA", /* name */
1278 FALSE, /* partial_inplace */
1279 0x0000ffff, /* src_mask */
1280 0x0000ffff, /* dst_mask */
1281 FALSE), /* pcrel_offset */
1283 /* Relax hint for load/store sequence. */
1284 HOWTO (R_NDS32_25_FIXED_RELA, /* type */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE, /* pc_relative */
1290 complain_overflow_dont,/* complain_on_overflow */
1291 nds32_elf_ignore_reloc,/* special_function */
1292 "R_NDS32_25_FIXED_RELA", /* name */
1293 FALSE, /* partial_inplace */
1294 0x00ffffff, /* src_mask */
1295 0x00ffffff, /* dst_mask */
1296 FALSE), /* pcrel_offset */
1298 /* High 20 bits of PLT symbol offset relative to PC. */
1299 HOWTO (R_NDS32_PLTREL_HI20, /* type */
1300 12, /* rightshift */
1301 2, /* size (0 = byte, 1 = short, 2 = long) */
1303 FALSE, /* pc_relative */
1305 complain_overflow_dont,/* complain_on_overflow */
1306 bfd_elf_generic_reloc, /* special_function */
1307 "R_NDS32_PLTREL_HI20", /* name */
1308 FALSE, /* partial_inplace */
1309 0x000fffff, /* src_mask */
1310 0x000fffff, /* dst_mask */
1311 FALSE), /* pcrel_offset */
1313 /* Low 12 bits of PLT symbol offset relative to PC. */
1314 HOWTO (R_NDS32_PLTREL_LO12, /* type */
1316 2, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE, /* pc_relative */
1320 complain_overflow_dont,/* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_NDS32_PLTREL_LO12", /* name */
1323 FALSE, /* partial_inplace */
1324 0x00000fff, /* src_mask */
1325 0x00000fff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* High 20 bits of PLT symbol offset relative to GOT (GP). */
1329 HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */
1330 12, /* rightshift */
1331 2, /* size (0 = byte, 1 = short, 2 = long) */
1333 FALSE, /* pc_relative */
1335 complain_overflow_dont,/* complain_on_overflow */
1336 bfd_elf_generic_reloc, /* special_function */
1337 "R_NDS32_PLT_GOTREL_HI20", /* name */
1338 FALSE, /* partial_inplace */
1339 0x000fffff, /* src_mask */
1340 0x000fffff, /* dst_mask */
1341 FALSE), /* pcrel_offset */
1343 /* Low 12 bits of PLT symbol offset relative to GOT (GP). */
1344 HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */
1346 2, /* size (0 = byte, 1 = short, 2 = long) */
1348 FALSE, /* pc_relative */
1350 complain_overflow_dont,/* complain_on_overflow */
1351 bfd_elf_generic_reloc, /* special_function */
1352 "R_NDS32_PLT_GOTREL_LO12", /* name */
1353 FALSE, /* partial_inplace */
1354 0x00000fff, /* src_mask */
1355 0x00000fff, /* dst_mask */
1356 FALSE), /* pcrel_offset */
1358 /* Small data area 12 bits offset. */
1359 HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */
1361 2, /* size (0 = byte, 1 = short, 2 = long) */
1363 FALSE, /* pc_relative */
1365 complain_overflow_signed, /* complain_on_overflow */
1366 bfd_elf_generic_reloc, /* special_function */
1367 "R_NDS32_SDA12S2_DP_RELA", /* name */
1368 FALSE, /* partial_inplace */
1369 0x00000fff, /* src_mask */
1370 0x00000fff, /* dst_mask */
1371 FALSE), /* pcrel_offset */
1373 /* Small data area 12 bits offset. */
1374 HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */
1376 2, /* size (0 = byte, 1 = short, 2 = long) */
1378 FALSE, /* pc_relative */
1380 complain_overflow_signed, /* complain_on_overflow */
1381 bfd_elf_generic_reloc, /* special_function */
1382 "R_NDS32_SDA12S2_SP_RELA", /* name */
1383 FALSE, /* partial_inplace */
1384 0x00000fff, /* src_mask */
1385 0x00000fff, /* dst_mask */
1386 FALSE), /* pcrel_offset */
1387 /* Lower 12 bits of address. */
1389 HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */
1391 2, /* size (0 = byte, 1 = short, 2 = long) */
1393 FALSE, /* pc_relative */
1395 complain_overflow_dont,/* complain_on_overflow */
1396 bfd_elf_generic_reloc, /* special_function */
1397 "R_NDS32_LO12S2_DP_RELA", /* name */
1398 FALSE, /* partial_inplace */
1399 0x000003ff, /* src_mask */
1400 0x000003ff, /* dst_mask */
1401 FALSE), /* pcrel_offset */
1403 /* Lower 12 bits of address. */
1404 HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */
1406 2, /* size (0 = byte, 1 = short, 2 = long) */
1408 FALSE, /* pc_relative */
1410 complain_overflow_dont,/* complain_on_overflow */
1411 bfd_elf_generic_reloc, /* special_function */
1412 "R_NDS32_LO12S2_SP_RELA", /* name */
1413 FALSE, /* partial_inplace */
1414 0x000003ff, /* src_mask */
1415 0x000003ff, /* dst_mask */
1416 FALSE), /* pcrel_offset */
1417 /* Lower 12 bits of address. Special identity for or case. */
1418 HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 FALSE, /* pc_relative */
1424 complain_overflow_dont,/* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_NDS32_LO12S0_ORI_RELA", /* name */
1427 FALSE, /* partial_inplace */
1428 0x00000fff, /* src_mask */
1429 0x00000fff, /* dst_mask */
1430 FALSE), /* pcrel_offset */
1431 /* Small data area 19 bits offset. */
1432 HOWTO (R_NDS32_SDA16S3_RELA, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 FALSE, /* pc_relative */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_NDS32_SDA16S3_RELA",/* name */
1441 FALSE, /* partial_inplace */
1442 0x0000ffff, /* src_mask */
1443 0x0000ffff, /* dst_mask */
1444 FALSE), /* pcrel_offset */
1446 /* Small data area 15 bits offset. */
1447 HOWTO (R_NDS32_SDA17S2_RELA, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE, /* pc_relative */
1453 complain_overflow_signed, /* complain_on_overflow */
1454 bfd_elf_generic_reloc, /* special_function */
1455 "R_NDS32_SDA17S2_RELA",/* name */
1456 FALSE, /* partial_inplace */
1457 0x0001ffff, /* src_mask */
1458 0x0001ffff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1461 HOWTO (R_NDS32_SDA18S1_RELA, /* type */
1463 2, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 bfd_elf_generic_reloc, /* special_function */
1469 "R_NDS32_SDA18S1_RELA",/* name */
1470 FALSE, /* partial_inplace */
1471 0x0003ffff, /* src_mask */
1472 0x0003ffff, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 HOWTO (R_NDS32_SDA19S0_RELA, /* type */
1477 2, /* size (0 = byte, 1 = short, 2 = long) */
1479 FALSE, /* pc_relative */
1481 complain_overflow_signed, /* complain_on_overflow */
1482 bfd_elf_generic_reloc, /* special_function */
1483 "R_NDS32_SDA19S0_RELA",/* name */
1484 FALSE, /* partial_inplace */
1485 0x0007ffff, /* src_mask */
1486 0x0007ffff, /* dst_mask */
1487 FALSE), /* pcrel_offset */
1488 HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */
1490 0, /* size (0 = byte, 1 = short, 2 = long) */
1492 FALSE, /* pc_relative */
1494 complain_overflow_dont,/* complain_on_overflow */
1495 nds32_elf_ignore_reloc,/* special_function */
1496 "R_NDS32_DWARF2_OP1_RELA", /* name */
1497 FALSE, /* partial_inplace */
1498 0xff, /* src_mask */
1499 0xff, /* dst_mask */
1500 FALSE), /* pcrel_offset */
1501 HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1505 FALSE, /* pc_relative */
1507 complain_overflow_dont,/* complain_on_overflow */
1508 nds32_elf_ignore_reloc,/* special_function */
1509 "R_NDS32_DWARF2_OP2_RELA", /* name */
1510 FALSE, /* partial_inplace */
1511 0xffff, /* src_mask */
1512 0xffff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1514 HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont,/* complain_on_overflow */
1521 nds32_elf_ignore_reloc,/* special_function */
1522 "R_NDS32_DWARF2_LEB_RELA", /* name */
1523 FALSE, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527 HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 FALSE, /* pc_relative */
1533 complain_overflow_dont,/* complain_on_overflow */
1534 nds32_elf_ignore_reloc,/* special_function */
1535 "R_NDS32_UPDATE_TA_RELA", /* name */
1536 FALSE, /* partial_inplace */
1537 0xffff, /* src_mask */
1538 0xffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1540 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
1541 entry for the symbol. */
1542 HOWTO (R_NDS32_9_PLTREL, /* type */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 TRUE, /* pc_relative */
1548 complain_overflow_signed, /* complain_on_overflow */
1549 bfd_elf_generic_reloc, /* special_function */
1550 "R_NDS32_9_PLTREL", /* name */
1551 FALSE, /* partial_inplace */
1552 0xff, /* src_mask */
1553 0xff, /* dst_mask */
1554 TRUE), /* pcrel_offset */
1555 /* Low 20 bits of PLT symbol offset relative to GOT (GP). */
1556 HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE, /* pc_relative */
1562 complain_overflow_dont,/* complain_on_overflow */
1563 bfd_elf_generic_reloc, /* special_function */
1564 "R_NDS32_PLT_GOTREL_LO20", /* name */
1565 FALSE, /* partial_inplace */
1566 0x000fffff, /* src_mask */
1567 0x000fffff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1569 /* low 15 bits of PLT symbol offset relative to GOT (GP) */
1570 HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_dont,/* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_NDS32_PLT_GOTREL_LO15", /* name */
1579 FALSE, /* partial_inplace */
1580 0x00007fff, /* src_mask */
1581 0x00007fff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583 /* Low 19 bits of PLT symbol offset relative to GOT (GP). */
1584 HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE, /* pc_relative */
1590 complain_overflow_dont,/* complain_on_overflow */
1591 bfd_elf_generic_reloc, /* special_function */
1592 "R_NDS32_PLT_GOTREL_LO19", /* name */
1593 FALSE, /* partial_inplace */
1594 0x0007ffff, /* src_mask */
1595 0x0007ffff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597 HOWTO (R_NDS32_GOT_LO15, /* type */
1599 2, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont,/* complain_on_overflow */
1604 bfd_elf_generic_reloc, /* special_function */
1605 "R_NDS32_GOT_LO15", /* name */
1606 FALSE, /* partial_inplace */
1607 0x00007fff, /* src_mask */
1608 0x00007fff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1610 HOWTO (R_NDS32_GOT_LO19, /* type */
1612 2, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont,/* complain_on_overflow */
1617 bfd_elf_generic_reloc, /* special_function */
1618 "R_NDS32_GOT_LO19", /* name */
1619 FALSE, /* partial_inplace */
1620 0x0007ffff, /* src_mask */
1621 0x0007ffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1623 HOWTO (R_NDS32_GOTOFF_LO15, /* type */
1625 2, /* size (0 = byte, 1 = short, 2 = long) */
1627 FALSE, /* pc_relative */
1629 complain_overflow_dont,/* complain_on_overflow */
1630 bfd_elf_generic_reloc, /* special_function */
1631 "R_NDS32_GOTOFF_LO15", /* name */
1632 FALSE, /* partial_inplace */
1633 0x00007fff, /* src_mask */
1634 0x00007fff, /* dst_mask */
1635 FALSE), /* pcrel_offset */
1636 HOWTO (R_NDS32_GOTOFF_LO19, /* type */
1638 2, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE, /* pc_relative */
1642 complain_overflow_dont,/* complain_on_overflow */
1643 bfd_elf_generic_reloc, /* special_function */
1644 "R_NDS32_GOTOFF_LO19", /* name */
1645 FALSE, /* partial_inplace */
1646 0x0007ffff, /* src_mask */
1647 0x0007ffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1649 /* GOT 15 bits offset. */
1650 HOWTO (R_NDS32_GOT15S2_RELA, /* type */
1652 2, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE, /* pc_relative */
1656 complain_overflow_signed, /* complain_on_overflow */
1657 bfd_elf_generic_reloc, /* special_function */
1658 "R_NDS32_GOT15S2_RELA",/* name */
1659 FALSE, /* partial_inplace */
1660 0x00007fff, /* src_mask */
1661 0x00007fff, /* dst_mask */
1662 FALSE), /* pcrel_offset */
1663 /* GOT 17 bits offset. */
1664 HOWTO (R_NDS32_GOT17S2_RELA, /* type */
1666 2, /* size (0 = byte, 1 = short, 2 = long) */
1668 FALSE, /* pc_relative */
1670 complain_overflow_signed, /* complain_on_overflow */
1671 bfd_elf_generic_reloc, /* special_function */
1672 "R_NDS32_GOT17S2_RELA",/* name */
1673 FALSE, /* partial_inplace */
1674 0x0001ffff, /* src_mask */
1675 0x0001ffff, /* dst_mask */
1676 FALSE), /* pcrel_offset */
1677 /* A 5 bit address. */
1678 HOWTO (R_NDS32_5_RELA, /* type */
1680 1, /* size (0 = byte, 1 = short, 2 = long) */
1682 FALSE, /* pc_relative */
1684 complain_overflow_signed, /* complain_on_overflow */
1685 bfd_elf_generic_reloc, /* special_function */
1686 "R_NDS32_5_RELA", /* name */
1687 FALSE, /* partial_inplace */
1688 0x1f, /* src_mask */
1689 0x1f, /* dst_mask */
1690 FALSE), /* pcrel_offset */
1691 HOWTO (R_NDS32_10_UPCREL_RELA,/* type */
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 TRUE, /* pc_relative */
1697 complain_overflow_unsigned, /* complain_on_overflow */
1698 bfd_elf_generic_reloc, /* special_function */
1699 "R_NDS32_10_UPCREL_RELA", /* name */
1700 FALSE, /* partial_inplace */
1701 0x1ff, /* src_mask */
1702 0x1ff, /* dst_mask */
1703 TRUE), /* pcrel_offset */
1704 HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_unsigned, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_NDS32_SDA_FP7U2_RELA", /* name */
1713 FALSE, /* partial_inplace */
1714 0x0000007f, /* src_mask */
1715 0x0000007f, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1717 HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */
1719 2, /* size (0 = byte, 1 = short, 2 = long) */
1721 TRUE, /* pc_relative */
1723 complain_overflow_signed, /* complain_on_overflow */
1724 bfd_elf_generic_reloc, /* special_function */
1725 "R_NDS32_WORD_9_PCREL_RELA", /* name */
1726 FALSE, /* partial_inplace */
1727 0xff, /* src_mask */
1728 0xff, /* dst_mask */
1729 TRUE), /* pcrel_offset */
1730 HOWTO (R_NDS32_25_ABS_RELA, /* type */
1732 2, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE, /* pc_relative */
1736 complain_overflow_dont,/* complain_on_overflow */
1737 bfd_elf_generic_reloc, /* special_function */
1738 "R_NDS32_25_ABS_RELA", /* name */
1739 FALSE, /* partial_inplace */
1740 0xffffff, /* src_mask */
1741 0xffffff, /* dst_mask */
1742 FALSE), /* pcrel_offset */
1744 /* A relative 17 bit relocation for ifc, right shifted by 1. */
1745 HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */
1747 2, /* size (0 = byte, 1 = short, 2 = long) */
1749 TRUE, /* pc_relative */
1751 complain_overflow_signed, /* complain_on_overflow */
1752 bfd_elf_generic_reloc, /* special_function */
1753 "R_NDS32_17IFC_PCREL_RELA", /* name */
1754 FALSE, /* partial_inplace */
1755 0xffff, /* src_mask */
1756 0xffff, /* dst_mask */
1757 TRUE), /* pcrel_offset */
1759 /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */
1760 HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 TRUE, /* pc_relative */
1766 complain_overflow_unsigned, /* complain_on_overflow */
1767 bfd_elf_generic_reloc, /* special_function */
1768 "R_NDS32_10IFCU_PCREL_RELA", /* name */
1769 FALSE, /* partial_inplace */
1770 0x1ff, /* src_mask */
1771 0x1ff, /* dst_mask */
1772 TRUE), /* pcrel_offset */
1774 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1775 HOWTO (R_NDS32_TLS_LE_HI20, /* type */
1776 12, /* rightshift */
1777 2, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE, /* pc_relative */
1781 complain_overflow_dont, /* complain_on_overflow */
1782 bfd_elf_generic_reloc, /* special_function */
1783 "R_NDS32_TLS_LE_HI20", /* name */
1784 FALSE, /* partial_inplace */
1785 0x000fffff, /* src_mask */
1786 0x000fffff, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1788 HOWTO (R_NDS32_TLS_LE_LO12, /* type */
1790 2, /* size (0 = byte, 1 = short, 2 = long) */
1792 FALSE, /* pc_relative */
1794 complain_overflow_dont, /* complain_on_overflow */
1795 bfd_elf_generic_reloc, /* special_function */
1796 "R_NDS32_TLS_LE_LO12", /* name */
1797 FALSE, /* partial_inplace */
1798 0x00000fff, /* src_mask */
1799 0x00000fff, /* dst_mask */
1800 FALSE), /* pcrel_offset */
1802 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1803 HOWTO (R_NDS32_TLS_IE_HI20, /* type */
1804 12, /* rightshift */
1805 2, /* size (0 = byte, 1 = short, 2 = long) */
1807 FALSE, /* pc_relative */
1809 complain_overflow_dont, /* complain_on_overflow */
1810 bfd_elf_generic_reloc, /* special_function */
1811 "R_NDS32_TLS_IE_HI20", /* name */
1812 FALSE, /* partial_inplace */
1813 0x000fffff, /* src_mask */
1814 0x000fffff, /* dst_mask */
1815 FALSE), /* pcrel_offset */
1816 HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */
1818 2, /* size (0 = byte, 1 = short, 2 = long) */
1820 FALSE, /* pc_relative */
1822 complain_overflow_dont, /* complain_on_overflow */
1823 bfd_elf_generic_reloc, /* special_function */
1824 "R_NDS32_TLS_IE_LO12S2", /* name */
1825 FALSE, /* partial_inplace */
1826 0x000003ff, /* src_mask */
1827 0x000003ff, /* dst_mask */
1828 FALSE), /* pcrel_offset */
1829 /* Mark a TLS IE entry in GOT. */
1830 HOWTO (R_NDS32_TLS_TPOFF, /* type */
1832 2, /* size (0 = byte, 1 = short, 2 = long) */
1834 FALSE, /* pc_relative */
1836 complain_overflow_bitfield, /* complain_on_overflow */
1837 bfd_elf_generic_reloc, /* special_function */
1838 "R_NDS32_TLS_TPOFF", /* name */
1839 FALSE, /* partial_inplace */
1840 0xffffffff, /* src_mask */
1841 0xffffffff, /* dst_mask */
1842 FALSE), /* pcrel_offset */
1843 /* A 20 bit address. */
1844 HOWTO (R_NDS32_TLS_LE_20, /* type */
1846 2, /* size (0 = byte, 1 = short, 2 = long) */
1848 FALSE, /* pc_relative */
1850 complain_overflow_signed, /* complain_on_overflow */
1851 bfd_elf_generic_reloc, /* special_function */
1852 "R_NDS32_TLS_LE_20", /* name */
1853 FALSE, /* partial_inplace */
1854 0xfffff, /* src_mask */
1855 0xfffff, /* dst_mask */
1856 FALSE), /* pcrel_offset */
1857 HOWTO (R_NDS32_TLS_LE_15S0, /* type */
1859 2, /* size (0 = byte, 1 = short, 2 = long) */
1861 FALSE, /* pc_relative */
1863 complain_overflow_signed, /* complain_on_overflow */
1864 bfd_elf_generic_reloc, /* special_function */
1865 "R_NDS32_TLS_LE_15S0", /* name */
1866 FALSE, /* partial_inplace */
1867 0x7fff, /* src_mask */
1868 0x7fff, /* dst_mask */
1869 FALSE), /* pcrel_offset */
1870 HOWTO (R_NDS32_TLS_LE_15S1, /* type */
1872 2, /* size (0 = byte, 1 = short, 2 = long) */
1874 FALSE, /* pc_relative */
1876 complain_overflow_signed, /* complain_on_overflow */
1877 bfd_elf_generic_reloc, /* special_function */
1878 "R_NDS32_TLS_LE_15S1", /* name */
1879 FALSE, /* partial_inplace */
1880 0x7fff, /* src_mask */
1881 0x7fff, /* dst_mask */
1882 FALSE), /* pcrel_offset */
1883 HOWTO (R_NDS32_TLS_LE_15S2, /* type */
1885 2, /* size (0 = byte, 1 = short, 2 = long) */
1887 FALSE, /* pc_relative */
1889 complain_overflow_signed, /* complain_on_overflow */
1890 bfd_elf_generic_reloc, /* special_function */
1891 "R_NDS32_TLS_LE_15S2", /* name */
1892 FALSE, /* partial_inplace */
1893 0x7fff, /* src_mask */
1894 0x7fff, /* dst_mask */
1895 FALSE), /* pcrel_offset */
1897 /* Relax hint for unconditional call sequence */
1898 HOWTO (R_NDS32_LONGCALL4, /* type */
1900 2, /* size (0 = byte, 1 = short, 2 = long) */
1902 FALSE, /* pc_relative */
1904 complain_overflow_dont, /* complain_on_overflow */
1905 nds32_elf_ignore_reloc, /* special_function */
1906 "R_NDS32_LONGCALL4", /* name */
1907 FALSE, /* partial_inplace */
1908 0xffffffff, /* src_mask */
1909 0xffffffff, /* dst_mask */
1910 FALSE), /* pcrel_offset */
1912 /* Relax hint for conditional call sequence. */
1913 HOWTO (R_NDS32_LONGCALL5, /* type */
1915 2, /* size (0 = byte, 1 = short, 2 = long) */
1917 FALSE, /* pc_relative */
1919 complain_overflow_dont, /* complain_on_overflow */
1920 nds32_elf_ignore_reloc, /* special_function */
1921 "R_NDS32_LONGCALL5", /* name */
1922 FALSE, /* partial_inplace */
1923 0xffffffff, /* src_mask */
1924 0xffffffff, /* dst_mask */
1925 FALSE), /* pcrel_offset */
1927 /* Relax hint for conditional call sequence. */
1928 HOWTO (R_NDS32_LONGCALL6, /* type */
1930 2, /* size (0 = byte, 1 = short, 2 = long) */
1932 FALSE, /* pc_relative */
1934 complain_overflow_dont, /* complain_on_overflow */
1935 nds32_elf_ignore_reloc, /* special_function */
1936 "R_NDS32_LONGCALL6", /* name */
1937 FALSE, /* partial_inplace */
1938 0xffffffff, /* src_mask */
1939 0xffffffff, /* dst_mask */
1940 FALSE), /* pcrel_offset */
1942 /* Relax hint for unconditional branch sequence. */
1943 HOWTO (R_NDS32_LONGJUMP4, /* type */
1945 2, /* size (0 = byte, 1 = short, 2 = long) */
1947 FALSE, /* pc_relative */
1949 complain_overflow_dont, /* complain_on_overflow */
1950 nds32_elf_ignore_reloc, /* special_function */
1951 "R_NDS32_LONGJUMP4", /* name */
1952 FALSE, /* partial_inplace */
1953 0xffffffff, /* src_mask */
1954 0xffffffff, /* dst_mask */
1955 FALSE), /* pcrel_offset */
1957 /* Relax hint for conditional branch sequence. */
1958 HOWTO (R_NDS32_LONGJUMP5, /* type */
1960 2, /* size (0 = byte, 1 = short, 2 = long) */
1962 FALSE, /* pc_relative */
1964 complain_overflow_dont, /* complain_on_overflow */
1965 nds32_elf_ignore_reloc, /* special_function */
1966 "R_NDS32_LONGJUMP5", /* name */
1967 FALSE, /* partial_inplace */
1968 0xffffffff, /* src_mask */
1969 0xffffffff, /* dst_mask */
1970 FALSE), /* pcrel_offset */
1972 /* Relax hint for conditional branch sequence. */
1973 HOWTO (R_NDS32_LONGJUMP6, /* type */
1975 2, /* size (0 = byte, 1 = short, 2 = long) */
1977 FALSE, /* pc_relative */
1979 complain_overflow_dont, /* complain_on_overflow */
1980 nds32_elf_ignore_reloc, /* special_function */
1981 "R_NDS32_LONGJUMP6", /* name */
1982 FALSE, /* partial_inplace */
1983 0xffffffff, /* src_mask */
1984 0xffffffff, /* dst_mask */
1985 FALSE), /* pcrel_offset */
1987 /* Relax hint for conditional branch sequence. */
1988 HOWTO (R_NDS32_LONGJUMP7, /* type */
1990 2, /* size (0 = byte, 1 = short, 2 = long) */
1992 FALSE, /* pc_relative */
1994 complain_overflow_dont, /* complain_on_overflow */
1995 nds32_elf_ignore_reloc, /* special_function */
1996 "R_NDS32_LONGJUMP7", /* name */
1997 FALSE, /* partial_inplace */
1998 0xffffffff, /* src_mask */
1999 0xffffffff, /* dst_mask */
2000 FALSE), /* pcrel_offset */
2003 /* Relocations used for relaxation. */
2004 static reloc_howto_type nds32_elf_relax_howto_table[] =
2006 HOWTO (R_NDS32_RELAX_ENTRY, /* type */
2008 2, /* size (0 = byte, 1 = short, 2 = long) */
2010 FALSE, /* pc_relative */
2012 complain_overflow_dont,/* complain_on_overflow */
2013 nds32_elf_ignore_reloc,/* special_function */
2014 "R_NDS32_RELAX_ENTRY", /* name */
2015 FALSE, /* partial_inplace */
2016 0xffffffff, /* src_mask */
2017 0xffffffff, /* dst_mask */
2018 FALSE), /* pcrel_offset */
2019 HOWTO (R_NDS32_GOT_SUFF, /* type */
2021 2, /* size (0 = byte, 1 = short, 2 = long) */
2023 FALSE, /* pc_relative */
2025 complain_overflow_dont,/* complain_on_overflow */
2026 nds32_elf_ignore_reloc,/* special_function */
2027 "R_NDS32_GOT_SUFF", /* name */
2028 FALSE, /* partial_inplace */
2029 0xffffffff, /* src_mask */
2030 0xffffffff, /* dst_mask */
2031 FALSE), /* pcrel_offset */
2032 HOWTO (R_NDS32_GOTOFF_SUFF, /* type */
2034 2, /* size (0 = byte, 1 = short, 2 = long) */
2036 FALSE, /* pc_relative */
2038 complain_overflow_bitfield, /* complain_on_overflow */
2039 nds32_elf_ignore_reloc,/* special_function */
2040 "R_NDS32_GOTOFF_SUFF", /* name */
2041 FALSE, /* partial_inplace */
2042 0xffffffff, /* src_mask */
2043 0xffffffff, /* dst_mask */
2044 FALSE), /* pcrel_offset */
2045 HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */
2047 2, /* size (0 = byte, 1 = short, 2 = long) */
2049 FALSE, /* pc_relative */
2051 complain_overflow_dont,/* complain_on_overflow */
2052 nds32_elf_ignore_reloc,/* special_function */
2053 "R_NDS32_PLT_GOT_SUFF",/* name */
2054 FALSE, /* partial_inplace */
2055 0xffffffff, /* src_mask */
2056 0xffffffff, /* dst_mask */
2057 FALSE), /* pcrel_offset */
2058 HOWTO (R_NDS32_MULCALL_SUFF, /* type */
2060 2, /* size (0 = byte, 1 = short, 2 = long) */
2062 FALSE, /* pc_relative */
2064 complain_overflow_dont,/* complain_on_overflow */
2065 nds32_elf_ignore_reloc,/* special_function */
2066 "R_NDS32_MULCALL_SUFF",/* name */
2067 FALSE, /* partial_inplace */
2068 0xffffffff, /* src_mask */
2069 0xffffffff, /* dst_mask */
2070 FALSE), /* pcrel_offset */
2071 HOWTO (R_NDS32_PTR, /* type */
2073 2, /* size (0 = byte, 1 = short, 2 = long) */
2075 FALSE, /* pc_relative */
2077 complain_overflow_dont,/* complain_on_overflow */
2078 nds32_elf_ignore_reloc,/* special_function */
2079 "R_NDS32_PTR", /* name */
2080 FALSE, /* partial_inplace */
2081 0xffffffff, /* src_mask */
2082 0xffffffff, /* dst_mask */
2083 FALSE), /* pcrel_offset */
2084 HOWTO (R_NDS32_PTR_COUNT, /* type */
2086 2, /* size (0 = byte, 1 = short, 2 = long) */
2088 FALSE, /* pc_relative */
2090 complain_overflow_dont,/* complain_on_overflow */
2091 nds32_elf_ignore_reloc,/* special_function */
2092 "R_NDS32_PTR_COUNT", /* name */
2093 FALSE, /* partial_inplace */
2094 0xffffffff, /* src_mask */
2095 0xffffffff, /* dst_mask */
2096 FALSE), /* pcrel_offset */
2097 HOWTO (R_NDS32_PTR_RESOLVED, /* type */
2099 2, /* size (0 = byte, 1 = short, 2 = long) */
2101 FALSE, /* pc_relative */
2103 complain_overflow_dont,/* complain_on_overflow */
2104 nds32_elf_ignore_reloc,/* special_function */
2105 "R_NDS32_PTR_RESOLVED",/* name */
2106 FALSE, /* partial_inplace */
2107 0xffffffff, /* src_mask */
2108 0xffffffff, /* dst_mask */
2109 FALSE), /* pcrel_offset */
2110 HOWTO (R_NDS32_PLTBLOCK, /* type */
2112 2, /* size (0 = byte, 1 = short, 2 = long) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont,/* complain_on_overflow */
2117 nds32_elf_ignore_reloc,/* special_function */
2118 "R_NDS32_PLTBLOCK", /* name */
2119 FALSE, /* partial_inplace */
2120 0xffffffff, /* src_mask */
2121 0xffffffff, /* dst_mask */
2122 FALSE), /* pcrel_offset */
2123 HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */
2125 2, /* size (0 = byte, 1 = short, 2 = long) */
2127 FALSE, /* pc_relative */
2129 complain_overflow_dont,/* complain_on_overflow */
2130 nds32_elf_ignore_reloc,/* special_function */
2131 "R_NDS32_RELAX_REGION_BEGIN", /* name */
2132 FALSE, /* partial_inplace */
2133 0xffffffff, /* src_mask */
2134 0xffffffff, /* dst_mask */
2135 FALSE), /* pcrel_offset */
2136 HOWTO (R_NDS32_RELAX_REGION_END, /* type */
2138 2, /* size (0 = byte, 1 = short, 2 = long) */
2140 FALSE, /* pc_relative */
2142 complain_overflow_dont,/* complain_on_overflow */
2143 nds32_elf_ignore_reloc,/* special_function */
2144 "R_NDS32_RELAX_REGION_END", /* name */
2145 FALSE, /* partial_inplace */
2146 0xffffffff, /* src_mask */
2147 0xffffffff, /* dst_mask */
2148 FALSE), /* pcrel_offset */
2149 HOWTO (R_NDS32_MINUEND, /* type */
2151 2, /* size (0 = byte, 1 = short, 2 = long) */
2153 FALSE, /* pc_relative */
2155 complain_overflow_dont,/* complain_on_overflow */
2156 nds32_elf_ignore_reloc,/* special_function */
2157 "R_NDS32_MINUEND", /* name */
2158 FALSE, /* partial_inplace */
2159 0xffffffff, /* src_mask */
2160 0xffffffff, /* dst_mask */
2161 FALSE), /* pcrel_offset */
2162 HOWTO (R_NDS32_SUBTRAHEND, /* type */
2164 2, /* size (0 = byte, 1 = short, 2 = long) */
2166 FALSE, /* pc_relative */
2168 complain_overflow_dont,/* complain_on_overflow */
2169 nds32_elf_ignore_reloc,/* special_function */
2170 "R_NDS32_SUBTRAHEND", /* name */
2171 FALSE, /* partial_inplace */
2172 0xffffffff, /* src_mask */
2173 0xffffffff, /* dst_mask */
2174 FALSE), /* pcrel_offset */
2175 HOWTO (R_NDS32_DIFF8, /* type */
2177 0, /* size (0 = byte, 1 = short, 2 = long) */
2179 FALSE, /* pc_relative */
2181 complain_overflow_dont,/* complain_on_overflow */
2182 nds32_elf_ignore_reloc,/* special_function */
2183 "R_NDS32_DIFF8", /* name */
2184 FALSE, /* partial_inplace */
2185 0x000000ff, /* src_mask */
2186 0x000000ff, /* dst_mask */
2187 FALSE), /* pcrel_offset */
2188 HOWTO (R_NDS32_DIFF16, /* type */
2190 1, /* size (0 = byte, 1 = short, 2 = long) */
2192 FALSE, /* pc_relative */
2194 complain_overflow_dont,/* complain_on_overflow */
2195 nds32_elf_ignore_reloc,/* special_function */
2196 "R_NDS32_DIFF16", /* name */
2197 FALSE, /* partial_inplace */
2198 0x0000ffff, /* src_mask */
2199 0x0000ffff, /* dst_mask */
2200 FALSE), /* pcrel_offset */
2201 HOWTO (R_NDS32_DIFF32, /* type */
2203 2, /* size (0 = byte, 1 = short, 2 = long) */
2205 FALSE, /* pc_relative */
2207 complain_overflow_dont,/* complain_on_overflow */
2208 nds32_elf_ignore_reloc,/* special_function */
2209 "R_NDS32_DIFF32", /* name */
2210 FALSE, /* partial_inplace */
2211 0xffffffff, /* src_mask */
2212 0xffffffff, /* dst_mask */
2213 FALSE), /* pcrel_offset */
2214 HOWTO (R_NDS32_DIFF_ULEB128, /* type */
2216 0, /* size (0 = byte, 1 = short, 2 = long) */
2218 FALSE, /* pc_relative */
2220 complain_overflow_dont,/* complain_on_overflow */
2221 nds32_elf_ignore_reloc,/* special_function */
2222 "R_NDS32_DIFF_ULEB128",/* name */
2223 FALSE, /* partial_inplace */
2224 0xffffffff, /* src_mask */
2225 0xffffffff, /* dst_mask */
2226 FALSE), /* pcrel_offset */
2227 HOWTO (R_NDS32_DATA, /* type */
2229 2, /* size (0 = byte, 1 = short, 2 = long) */
2231 FALSE, /* pc_relative */
2233 complain_overflow_dont,/* complain_on_overflow */
2234 nds32_elf_ignore_reloc,/* special_function */
2235 "R_NDS32_DATA", /* name */
2236 FALSE, /* partial_inplace */
2237 0xffffffff, /* src_mask */
2238 0xffffffff, /* dst_mask */
2239 FALSE), /* pcrel_offset */
2240 HOWTO (R_NDS32_TRAN, /* type */
2242 2, /* size (0 = byte, 1 = short, 2 = long) */
2244 FALSE, /* pc_relative */
2246 complain_overflow_dont,/* complain_on_overflow */
2247 nds32_elf_ignore_reloc,/* special_function */
2248 "R_NDS32_TRAN", /* name */
2249 FALSE, /* partial_inplace */
2250 0xffffffff, /* src_mask */
2251 0xffffffff, /* dst_mask */
2252 FALSE), /* pcrel_offset */
2253 HOWTO (R_NDS32_TLS_LE_ADD, /* type */
2255 2, /* size (0 = byte, 1 = short, 2 = long) */
2257 FALSE, /* pc_relative */
2259 complain_overflow_dont, /* complain_on_overflow */
2260 nds32_elf_ignore_reloc, /* special_function */
2261 "R_NDS32_TLS_LE_ADD", /* name */
2262 FALSE, /* partial_inplace */
2263 0xffffffff, /* src_mask */
2264 0xffffffff, /* dst_mask */
2265 FALSE), /* pcrel_offset */
2266 HOWTO (R_NDS32_TLS_LE_LS, /* type */
2268 2, /* size (0 = byte, 1 = short, 2 = long) */
2270 FALSE, /* pc_relative */
2272 complain_overflow_dont, /* complain_on_overflow */
2273 nds32_elf_ignore_reloc, /* special_function */
2274 "R_NDS32_TLS_LE_LS", /* name */
2275 FALSE, /* partial_inplace */
2276 0xffffffff, /* src_mask */
2277 0xffffffff, /* dst_mask */
2278 FALSE), /* pcrel_offset */
2279 HOWTO (R_NDS32_EMPTY, /* type */
2281 2, /* size (0 = byte, 1 = short, 2 = long) */
2283 FALSE, /* pc_relative */
2285 complain_overflow_dont, /* complain_on_overflow */
2286 nds32_elf_ignore_reloc, /* special_function */
2287 "R_NDS32_EMPTY", /* name */
2288 FALSE, /* partial_inplace */
2289 0xffffffff, /* src_mask */
2290 0xffffffff, /* dst_mask */
2291 FALSE), /* pcrel_offset */
2295 /* nds32_insertion_sort sorts an array with nmemb elements of size size.
2296 This prototype is the same as qsort (). */
2299 nds32_insertion_sort (void *base, size_t nmemb, size_t size,
2300 int (*compar) (const void *lhs, const void *rhs))
2302 char *ptr = (char *) base;
2304 char *tmp = xmalloc (size);
2306 /* If i is less than j, i is inserted before j.
2308 |---- j ----- i --------------|
2313 for (i = 1; i < (int) nmemb; i++)
2315 for (j = (i - 1); j >= 0; j--)
2316 if (compar (ptr + i * size, ptr + j * size) >= 0)
2322 continue; /* i is in order. */
2324 memcpy (tmp, ptr + i * size, size);
2325 memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size);
2326 memcpy (ptr + j * size, tmp, size);
2331 /* Sort relocation by r_offset.
2333 We didn't use qsort () in stdlib, because quick-sort is not a stable sorting
2334 algorithm. Relocations at the same r_offset must keep their order.
2335 For example, RELAX_ENTRY must be the very first relocation entry.
2337 Currently, this function implements insertion-sort.
2339 FIXME: If we already sort them in assembler, why bother sort them
2343 compar_reloc (const void *lhs, const void *rhs)
2345 const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs;
2346 const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs;
2348 if (l->r_offset > r->r_offset)
2350 else if (l->r_offset == r->r_offset)
2356 /* Functions listed below are only used for old relocs.
2357 * nds32_elf_9_pcrel_reloc
2358 * nds32_elf_do_9_pcrel_reloc
2359 * nds32_elf_hi20_reloc
2360 * nds32_elf_relocate_hi20
2361 * nds32_elf_lo12_reloc
2362 * nds32_elf_sda15_reloc
2363 * nds32_elf_generic_reloc
2366 /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */
2368 static bfd_reloc_status_type
2369 nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2370 void *data, asection *input_section, bfd *output_bfd,
2371 char **error_message ATTRIBUTE_UNUSED)
2373 /* This part is from bfd_elf_generic_reloc. */
2374 if (output_bfd != (bfd *) NULL
2375 && (symbol->flags & BSF_SECTION_SYM) == 0
2376 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2378 reloc_entry->address += input_section->output_offset;
2379 return bfd_reloc_ok;
2382 if (output_bfd != NULL)
2384 /* FIXME: See bfd_perform_relocation. Is this right? */
2385 return bfd_reloc_continue;
2388 return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto,
2390 data, reloc_entry->address,
2393 + symbol->section->output_section->vma
2394 + symbol->section->output_offset),
2395 reloc_entry->addend);
2398 /* Utility to actually perform an R_NDS32_9_PCREL reloc. */
2399 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
2401 static bfd_reloc_status_type
2402 nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto,
2403 asection *input_section, bfd_byte *data,
2405 asection *symbol_section ATTRIBUTE_UNUSED,
2406 bfd_vma symbol_value, bfd_vma addend)
2408 bfd_signed_vma relocation;
2410 bfd_reloc_status_type status;
2412 /* Sanity check the address (offset in section). */
2413 if (offset > bfd_get_section_limit (abfd, input_section))
2414 return bfd_reloc_outofrange;
2416 relocation = symbol_value + addend;
2417 /* Make it pc relative. */
2418 relocation -= (input_section->output_section->vma
2419 + input_section->output_offset);
2420 /* These jumps mask off the lower two bits of the current address
2421 before doing pcrel calculations. */
2422 relocation -= (offset & -(bfd_vma) 2);
2424 if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1)
2425 status = bfd_reloc_overflow;
2427 status = bfd_reloc_ok;
2429 x = bfd_getb16 (data + offset);
2431 relocation >>= howto->rightshift;
2432 relocation <<= howto->bitpos;
2433 x = (x & ~howto->dst_mask)
2434 | (((x & howto->src_mask) + relocation) & howto->dst_mask);
2436 bfd_putb16 ((bfd_vma) x, data + offset);
2441 /* Handle the R_NDS32_HI20_[SU]LO relocs.
2442 HI20_SLO is for the add3 and load/store with displacement instructions.
2443 HI20 is for the or3 instruction.
2444 For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to
2445 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
2446 we must add one to the high 16 bytes (which will get subtracted off when
2447 the low 16 bits are added).
2448 These relocs have to be done in combination with an R_NDS32_LO12 reloc
2449 because there is a carry from the LO12 to the HI20. Here we just save
2450 the information we need; we do the actual relocation when we see the LO12.
2451 This code is copied from the elf32-mips.c. We also support an arbitrary
2452 number of HI20 relocs to be associated with a single LO12 reloc. The
2453 assembler sorts the relocs to ensure each HI20 immediately precedes its
2454 LO12. However if there are multiple copies, the assembler may not find
2455 the real LO12 so it picks the first one it finds. */
2459 struct nds32_hi20 *next;
2464 static struct nds32_hi20 *nds32_hi20_list;
2466 static bfd_reloc_status_type
2467 nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2468 asymbol *symbol, void *data, asection *input_section,
2469 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2471 bfd_reloc_status_type ret;
2473 struct nds32_hi20 *n;
2475 /* This part is from bfd_elf_generic_reloc.
2476 If we're relocating, and this an external symbol, we don't want
2477 to change anything. */
2478 if (output_bfd != (bfd *) NULL
2479 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0)
2481 reloc_entry->address += input_section->output_offset;
2482 return bfd_reloc_ok;
2485 /* Sanity check the address (offset in section). */
2486 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2487 return bfd_reloc_outofrange;
2490 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2491 ret = bfd_reloc_undefined;
2493 if (bfd_is_com_section (symbol->section))
2496 relocation = symbol->value;
2498 relocation += symbol->section->output_section->vma;
2499 relocation += symbol->section->output_offset;
2500 relocation += reloc_entry->addend;
2502 /* Save the information, and let LO12 do the actual relocation. */
2503 n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n);
2505 return bfd_reloc_outofrange;
2507 n->addr = (bfd_byte *) data + reloc_entry->address;
2508 n->addend = relocation;
2509 n->next = nds32_hi20_list;
2510 nds32_hi20_list = n;
2512 if (output_bfd != (bfd *) NULL)
2513 reloc_entry->address += input_section->output_offset;
2518 /* Handle an NDS32 ELF HI20 reloc. */
2521 nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED,
2522 int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi,
2523 Elf_Internal_Rela *rello, bfd_byte *contents,
2529 insn = bfd_getb32 (contents + relhi->r_offset);
2531 addlo = bfd_getb32 (contents + rello->r_offset);
2534 addend += ((insn & 0xfffff) << 20) + addlo;
2536 insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff);
2537 bfd_putb32 (insn, contents + relhi->r_offset);
2540 /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit
2541 inplace relocation; this function exists in order to do the
2542 R_NDS32_HI20_[SU]LO relocation described above. */
2544 static bfd_reloc_status_type
2545 nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol,
2546 void *data, asection *input_section, bfd *output_bfd,
2547 char **error_message)
2549 /* This part is from bfd_elf_generic_reloc.
2550 If we're relocating, and this an external symbol, we don't want
2551 to change anything. */
2552 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2553 && reloc_entry->addend == 0)
2555 reloc_entry->address += input_section->output_offset;
2556 return bfd_reloc_ok;
2559 if (nds32_hi20_list != NULL)
2561 struct nds32_hi20 *l;
2563 l = nds32_hi20_list;
2568 unsigned long vallo;
2569 struct nds32_hi20 *next;
2571 /* Do the HI20 relocation. Note that we actually don't need
2572 to know anything about the LO12 itself, except where to
2573 find the low 12 bits of the addend needed by the LO12. */
2574 insn = bfd_getb32 (l->addr);
2575 vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address);
2577 switch (reloc_entry->howto->type)
2579 case R_NDS32_LO12S3:
2583 case R_NDS32_LO12S2:
2587 case R_NDS32_LO12S1:
2591 case R_NDS32_LO12S0:
2596 val = ((insn & 0xfffff) << 12) + vallo;
2599 insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff);
2600 bfd_putb32 ((bfd_vma) insn, l->addr);
2607 nds32_hi20_list = NULL;
2610 /* Now do the LO12 reloc in the usual way.
2611 ??? It would be nice to call bfd_elf_generic_reloc here,
2612 but we have partial_inplace set. bfd_elf_generic_reloc will
2613 pass the handling back to bfd_install_relocation which will install
2614 a section relative addend which is wrong. */
2615 return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
2616 input_section, output_bfd, error_message);
2619 /* Do generic partial_inplace relocation.
2620 This is a local replacement for bfd_elf_generic_reloc. */
2622 static bfd_reloc_status_type
2623 nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry,
2624 asymbol *symbol, void *data, asection *input_section,
2625 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2627 bfd_reloc_status_type ret;
2629 bfd_byte *inplace_address;
2631 /* This part is from bfd_elf_generic_reloc.
2632 If we're relocating, and this an external symbol, we don't want
2633 to change anything. */
2634 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2635 && reloc_entry->addend == 0)
2637 reloc_entry->address += input_section->output_offset;
2638 return bfd_reloc_ok;
2641 /* Now do the reloc in the usual way.
2642 ??? It would be nice to call bfd_elf_generic_reloc here,
2643 but we have partial_inplace set. bfd_elf_generic_reloc will
2644 pass the handling back to bfd_install_relocation which will install
2645 a section relative addend which is wrong. */
2647 /* Sanity check the address (offset in section). */
2648 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
2649 return bfd_reloc_outofrange;
2652 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2653 ret = bfd_reloc_undefined;
2655 if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
2658 relocation = symbol->value;
2660 /* Only do this for a final link. */
2661 if (output_bfd == (bfd *) NULL)
2663 relocation += symbol->section->output_section->vma;
2664 relocation += symbol->section->output_offset;
2667 relocation += reloc_entry->addend;
2668 switch (reloc_entry->howto->type)
2670 case R_NDS32_LO12S3:
2674 case R_NDS32_LO12S2:
2678 case R_NDS32_LO12S1:
2682 case R_NDS32_LO12S0:
2688 inplace_address = (bfd_byte *) data + reloc_entry->address;
2691 x = ((x & ~reloc_entry->howto->dst_mask) | \
2692 (((x & reloc_entry->howto->src_mask) + relocation) & \
2693 reloc_entry->howto->dst_mask))
2695 switch (reloc_entry->howto->size)
2699 short x = bfd_getb16 (inplace_address);
2702 bfd_putb16 ((bfd_vma) x, inplace_address);
2707 unsigned long x = bfd_getb32 (inplace_address);
2710 bfd_putb32 ((bfd_vma) x, inplace_address);
2717 if (output_bfd != (bfd *) NULL)
2718 reloc_entry->address += input_section->output_offset;
2723 /* Handle the R_NDS32_SDA15 reloc.
2724 This reloc is used to compute the address of objects in the small data area
2725 and to perform loads and stores from that area.
2726 The lower 15 bits are sign extended and added to the register specified
2727 in the instruction, which is assumed to point to _SDA_BASE_.
2729 Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on
2730 the access size, this must be taken care of. */
2732 static bfd_reloc_status_type
2733 nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2734 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
2735 asection *input_section, bfd *output_bfd,
2736 char **error_message ATTRIBUTE_UNUSED)
2738 /* This part is from bfd_elf_generic_reloc. */
2739 if (output_bfd != (bfd *) NULL
2740 && (symbol->flags & BSF_SECTION_SYM) == 0
2741 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2743 reloc_entry->address += input_section->output_offset;
2744 return bfd_reloc_ok;
2747 if (output_bfd != NULL)
2749 /* FIXME: See bfd_perform_relocation. Is this right? */
2750 return bfd_reloc_continue;
2753 /* FIXME: not sure what to do here yet. But then again, the linker
2754 may never call us. */
2758 /* nds32_elf_ignore_reloc is the special function for
2759 relocation types which don't need to be relocated
2760 like relaxation relocation types.
2761 This function simply return bfd_reloc_ok when it is
2764 static bfd_reloc_status_type
2765 nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2766 asymbol *symbol ATTRIBUTE_UNUSED,
2767 void *data ATTRIBUTE_UNUSED, asection *input_section,
2768 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2770 if (output_bfd != NULL)
2771 reloc_entry->address += input_section->output_offset;
2773 return bfd_reloc_ok;
2777 /* Map BFD reloc types to NDS32 ELF reloc types. */
2779 struct nds32_reloc_map_entry
2781 bfd_reloc_code_real_type bfd_reloc_val;
2782 unsigned char elf_reloc_val;
2785 static const struct nds32_reloc_map_entry nds32_reloc_map[] =
2787 {BFD_RELOC_NONE, R_NDS32_NONE},
2788 {BFD_RELOC_16, R_NDS32_16_RELA},
2789 {BFD_RELOC_32, R_NDS32_32_RELA},
2790 {BFD_RELOC_NDS32_20, R_NDS32_20_RELA},
2791 {BFD_RELOC_NDS32_5, R_NDS32_5_RELA},
2792 {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA},
2793 {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA},
2794 {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA},
2795 {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA},
2796 {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA},
2797 {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA},
2798 {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA},
2799 {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA},
2800 {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA},
2801 {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA},
2802 {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA},
2803 {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA},
2804 {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA},
2805 {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA},
2806 {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA},
2807 {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA},
2808 {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT},
2809 {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY},
2811 {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20},
2812 {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL},
2813 {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL},
2814 {BFD_RELOC_NDS32_COPY, R_NDS32_COPY},
2815 {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT},
2816 {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT},
2817 {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE},
2818 {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF},
2819 {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20},
2820 {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20},
2821 {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12},
2822 {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15},
2823 {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19},
2824 {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20},
2825 {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12},
2826 {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20},
2827 {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12},
2828 {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15},
2829 {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19},
2830 {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16},
2831 {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL},
2832 {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1},
2833 {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2},
2834 {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3},
2835 {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4},
2836 {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5},
2837 {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6},
2838 {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1},
2839 {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2},
2840 {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3},
2841 {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4},
2842 {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5},
2843 {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6},
2844 {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7},
2845 {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE},
2846 {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA},
2847 {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA},
2848 {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA},
2849 {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA},
2850 {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20},
2851 {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12},
2852 {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20},
2853 {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12},
2854 {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15},
2855 {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19},
2856 {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20},
2857 {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA},
2858 {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA},
2859 {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA},
2860 {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA},
2861 {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA},
2862 {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA},
2863 {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA},
2864 {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA},
2865 {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA},
2866 {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA},
2867 {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA},
2868 {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA},
2869 {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA},
2870 {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF},
2871 {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF},
2872 {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA},
2873 {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA},
2874 {BFD_RELOC_NDS32_PTR, R_NDS32_PTR},
2875 {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT},
2876 {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF},
2877 {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED},
2878 {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY},
2879 {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF},
2880 {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK},
2881 {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN},
2882 {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END},
2883 {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND},
2884 {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND},
2885 {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY},
2887 {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8},
2888 {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16},
2889 {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32},
2890 {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128},
2891 {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA},
2892 {BFD_RELOC_NDS32_DATA, R_NDS32_DATA},
2893 {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN},
2894 {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA},
2895 {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA},
2896 {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20},
2897 {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12},
2898 {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD},
2899 {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS},
2900 {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20},
2901 {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2},
2902 {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF},
2903 {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20},
2904 {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0},
2905 {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1},
2906 {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2},
2911 static reloc_howto_type *
2912 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2917 for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++)
2918 if (nds32_elf_howto_table[i].name != NULL
2919 && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0)
2920 return &nds32_elf_howto_table[i];
2922 for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++)
2923 if (nds32_elf_relax_howto_table[i].name != NULL
2924 && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0)
2925 return &nds32_elf_relax_howto_table[i];
2930 static reloc_howto_type *
2931 bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code)
2933 if (code < R_NDS32_RELAX_ENTRY)
2935 BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table));
2936 return &nds32_elf_howto_table[code];
2940 BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY)
2941 < ARRAY_SIZE (nds32_elf_relax_howto_table));
2942 return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY];
2946 static reloc_howto_type *
2947 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2948 bfd_reloc_code_real_type code)
2952 for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++)
2954 if (nds32_reloc_map[i].bfd_reloc_val == code)
2955 return bfd_elf32_bfd_reloc_type_table_lookup
2956 (nds32_reloc_map[i].elf_reloc_val);
2962 /* Set the howto pointer for an NDS32 ELF reloc. */
2965 nds32_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2966 Elf_Internal_Rela *dst)
2968 enum elf_nds32_reloc_type r_type;
2970 r_type = ELF32_R_TYPE (dst->r_info);
2971 if (r_type > R_NDS32_GNU_VTENTRY)
2973 _bfd_error_handler (_("%B: invalid NDS32 reloc number: %d"), abfd, r_type);
2976 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
2980 nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2981 Elf_Internal_Rela *dst)
2983 BFD_ASSERT ((ELF32_R_TYPE (dst->r_info) == R_NDS32_NONE)
2984 || ((ELF32_R_TYPE (dst->r_info) > R_NDS32_GNU_VTENTRY)
2985 && (ELF32_R_TYPE (dst->r_info) < R_NDS32_max)));
2986 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst->r_info));
2989 /* Support for core dump NOTE sections.
2990 Reference to include/linux/elfcore.h in Linux. */
2993 nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2998 switch (note->descsz)
3001 /* Linux/NDS32 32-bit, ABI1 */
3004 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3007 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
3015 /* Linux/NDS32 32-bit */
3018 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3021 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
3032 /* Make a ".reg" section. */
3033 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3034 size, note->descpos + offset);
3038 nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3040 switch (note->descsz)
3045 /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */
3046 elf_tdata (abfd)->core->program =
3047 _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3048 elf_tdata (abfd)->core->command =
3049 _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3056 /* Note that for some reason, a spurious space is tacked
3057 onto the end of the args in some (at least one anyway)
3058 implementations, so strip it off if it exists. */
3060 char *command = elf_tdata (abfd)->core->command;
3061 int n = strlen (command);
3063 if (0 < n && command[n - 1] == ' ')
3064 command[n - 1] = '\0';
3070 /* Hook called by the linker routine which adds symbols from an object
3071 file. We must handle the special NDS32 section numbers here.
3072 We also keep watching for whether we need to create the sdata special
3076 nds32_elf_add_symbol_hook (bfd *abfd,
3077 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3078 Elf_Internal_Sym *sym,
3079 const char **namep ATTRIBUTE_UNUSED,
3080 flagword *flagsp ATTRIBUTE_UNUSED,
3081 asection **secp, bfd_vma *valp)
3083 switch (sym->st_shndx)
3086 /* Common symbols less than the GP size are automatically
3087 treated as SHN_MIPS_SCOMMON symbols. */
3088 if (sym->st_size > elf_gp_size (abfd)
3089 || ELF_ST_TYPE (sym->st_info) == STT_TLS)
3092 /* st_value is the alignemnt constraint.
3093 That might be its actual size if it is an array or structure. */
3094 switch (sym->st_value)
3097 *secp = bfd_make_section_old_way (abfd, ".scommon_b");
3100 *secp = bfd_make_section_old_way (abfd, ".scommon_h");
3103 *secp = bfd_make_section_old_way (abfd, ".scommon_w");
3106 *secp = bfd_make_section_old_way (abfd, ".scommon_d");
3112 (*secp)->flags |= SEC_IS_COMMON;
3113 *valp = sym->st_size;
3121 /* This function can figure out the best location for a base register to access
3122 data relative to this base register
3124 sda_d0: size of first DOUBLE WORD data section
3125 sda_w0: size of first WORD data section
3126 sda_h0: size of first HALF WORD data section
3127 sda_b : size of BYTE data section
3128 sda_hi: size of second HALF WORD data section
3129 sda_w1: size of second WORD data section
3130 sda_d1: size of second DOUBLE WORD data section
3132 offset (always positive) from the beginning of sda_d0 if OK
3133 a negative error value if fail
3135 these 7 sections have to be located back to back if exist
3136 a pass in 0 value for non-existing section */
3138 /* Due to the interpretation of simm15 field of load/store depending on
3139 data accessing size, the organization of base register relative data shall
3140 like the following figure
3141 -------------------------------------------
3142 | DOUBLE WORD sized data (range +/- 128K)
3143 -------------------------------------------
3144 | WORD sized data (range +/- 64K)
3145 -------------------------------------------
3146 | HALF WORD sized data (range +/- 32K)
3147 -------------------------------------------
3148 | BYTE sized data (range +/- 16K)
3149 -------------------------------------------
3150 | HALF WORD sized data (range +/- 32K)
3151 -------------------------------------------
3152 | WORD sized data (range +/- 64K)
3153 -------------------------------------------
3154 | DOUBLE WORD sized data (range +/- 128K)
3155 -------------------------------------------
3156 Its base register shall be set to access these data freely. */
3158 /* We have to figure out the SDA_BASE value, so that we can adjust the
3159 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
3160 BFD. If we can't find it, we're stuck. We cache it in the ELF
3161 target data. We don't need to adjust the symbol value for an
3162 external symbol if we are producing relocatable output. */
3164 static asection *sda_rela_sec = NULL;
3166 #define SDA_SECTION_NUM 10
3168 static bfd_reloc_status_type
3169 nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info,
3170 bfd_vma *psb, bfd_boolean add_symbol)
3173 struct elf_nds32_link_hash_table *table;
3174 struct bfd_link_hash_entry *h, *h2;
3175 long unsigned int total = 0;
3177 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
3178 if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak))
3180 asection *first = NULL, *final = NULL, *temp;
3182 /* The first section must be 4-byte aligned to promise _SDA_BASE_ being
3183 4 byte-aligned. Therefore, it has to set the first section ".data"
3185 static const char sec_name[SDA_SECTION_NUM][10] =
3187 ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b",
3188 ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d"
3192 if (output_bfd->sections == NULL)
3194 *psb = elf_gp (output_bfd);
3195 return bfd_reloc_ok;
3198 /* Get the first and final section. */
3199 while (i < sizeof (sec_name) / sizeof (sec_name [0]))
3201 temp = bfd_get_section_by_name (output_bfd, sec_name[i]);
3202 if (temp && !first && (temp->size != 0 || temp->rawsize != 0))
3204 if (temp && (temp->size != 0 || temp->rawsize != 0))
3207 /* Summarize the sections in order to check if joining .bss. */
3208 if (temp && temp->size != 0)
3209 total += temp->size;
3210 else if (temp && temp->rawsize != 0)
3211 total += temp->rawsize;
3216 /* Check .bss size. */
3217 temp = bfd_get_section_by_name (output_bfd, ".bss");
3220 if (temp->size != 0)
3221 total += temp->size;
3222 else if (temp->rawsize != 0)
3223 total += temp->rawsize;
3225 if (total < 0x80000)
3227 if (!first && (temp->size != 0 || temp->rawsize != 0))
3229 if ((temp->size != 0 || temp->rawsize != 0))
3236 /* The middle of data region. */
3237 sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2;
3239 /* Find the section sda_base located. */
3241 while (i < sizeof (sec_name) / sizeof (sec_name [0]))
3243 final = bfd_get_section_by_name (output_bfd, sec_name[i]);
3244 if (final && (final->size != 0 || final->rawsize != 0)
3245 && sda_base >= final->vma)
3256 /* There is not any data section in output bfd, and set _SDA_BASE_ in
3257 first output section. */
3258 first = output_bfd->sections;
3259 while (first && first->size == 0 && first->rawsize == 0)
3260 first = first->next;
3263 *psb = elf_gp (output_bfd);
3264 return bfd_reloc_ok;
3266 sda_base = first->vma + first->rawsize;
3269 sda_base -= first->vma;
3270 sda_base = sda_base & (~7);
3272 if (!_bfd_generic_link_add_one_symbol
3273 (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first,
3274 (bfd_vma) sda_base, (const char *) NULL, FALSE,
3275 get_elf_backend_data (output_bfd)->collect, &h))
3278 sda_rela_sec = first;
3280 table = nds32_elf_hash_table (info);
3281 relax_fp_as_gp = table->relax_fp_as_gp;
3284 h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME,
3285 FALSE, FALSE, FALSE);
3286 /* Define a weak FP_BASE_NAME here to prevent the undefined symbol.
3287 And set FP equal to SDA_BASE to do relaxation for
3288 la $fp, _FP_BASE_. */
3289 if (!_bfd_generic_link_add_one_symbol
3290 (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK,
3291 first, (bfd_vma) sda_base, (const char *) NULL,
3292 FALSE, get_elf_backend_data (output_bfd)->collect, &h2))
3297 if (add_symbol == TRUE)
3302 elf_gp (output_bfd) = (h->u.def.value
3303 + h->u.def.section->output_section->vma
3304 + h->u.def.section->output_offset);
3308 _bfd_error_handler (_("error: Can't find symbol: _SDA_BASE_."));
3309 return bfd_reloc_dangerous;
3313 *psb = h->u.def.value + h->u.def.section->output_section->vma
3314 + h->u.def.section->output_offset;
3315 return bfd_reloc_ok;
3319 /* Return size of a PLT entry. */
3320 #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE
3323 /* Create an entry in an nds32 ELF linker hash table. */
3325 static struct bfd_hash_entry *
3326 nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3327 struct bfd_hash_table *table,
3330 struct elf_nds32_link_hash_entry *ret;
3332 ret = (struct elf_nds32_link_hash_entry *) entry;
3334 /* Allocate the structure if it has not already been allocated by a
3337 ret = (struct elf_nds32_link_hash_entry *)
3338 bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry));
3341 return (struct bfd_hash_entry *) ret;
3343 /* Call the allocation method of the superclass. */
3344 ret = (struct elf_nds32_link_hash_entry *)
3345 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string);
3349 struct elf_nds32_link_hash_entry *eh;
3351 eh = (struct elf_nds32_link_hash_entry *) ret;
3352 eh->dyn_relocs = NULL;
3353 eh->tls_type = GOT_UNKNOWN;
3356 return (struct bfd_hash_entry *) ret;
3359 /* Create an nds32 ELF linker hash table. */
3361 static struct bfd_link_hash_table *
3362 nds32_elf_link_hash_table_create (bfd *abfd)
3364 struct elf_nds32_link_hash_table *ret;
3366 bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table);
3368 ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt);
3373 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3374 nds32_elf_link_hash_newfunc,
3375 sizeof (struct elf_nds32_link_hash_entry),
3383 ret->sgotplt = NULL;
3384 ret->srelgot = NULL;
3386 ret->srelplt = NULL;
3387 ret->sdynbss = NULL;
3388 ret->srelbss = NULL;
3389 ret->sym_ld_script = NULL;
3390 ret->ex9_export_file = NULL;
3391 ret->ex9_import_file = NULL;
3393 return &ret->root.root;
3396 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
3397 shortcuts to them in our hash table. */
3400 create_got_section (bfd *dynobj, struct bfd_link_info *info)
3402 struct elf_nds32_link_hash_table *htab;
3404 if (!_bfd_elf_create_got_section (dynobj, info))
3407 htab = nds32_elf_hash_table (info);
3408 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
3409 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
3410 if (!htab->sgot || !htab->sgotplt)
3413 /* _bfd_elf_create_got_section will create it for us. */
3414 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3415 if (htab->srelgot == NULL
3416 || !bfd_set_section_flags (dynobj, htab->srelgot,
3417 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3418 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3420 || !bfd_set_section_alignment (dynobj, htab->srelgot, 2))
3426 /* Create dynamic sections when linking against a dynamic object. */
3429 nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3431 struct elf_nds32_link_hash_table *htab;
3432 flagword flags, pltflags;
3433 register asection *s;
3434 const struct elf_backend_data *bed;
3435 int ptralign = 2; /* 32-bit */
3437 bed = get_elf_backend_data (abfd);
3439 htab = nds32_elf_hash_table (info);
3441 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3442 .rel[a].bss sections. */
3444 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3445 | SEC_LINKER_CREATED);
3448 pltflags |= SEC_CODE;
3449 if (bed->plt_not_loaded)
3450 pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
3451 if (bed->plt_readonly)
3452 pltflags |= SEC_READONLY;
3454 s = bfd_make_section (abfd, ".plt");
3457 || !bfd_set_section_flags (abfd, s, pltflags)
3458 || !bfd_set_section_alignment (abfd, s, bed->plt_alignment))
3461 if (bed->want_plt_sym)
3463 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3465 struct bfd_link_hash_entry *bh = NULL;
3466 struct elf_link_hash_entry *h;
3468 if (!(_bfd_generic_link_add_one_symbol
3469 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
3470 (bfd_vma) 0, (const char *) NULL, FALSE,
3471 get_elf_backend_data (abfd)->collect, &bh)))
3474 h = (struct elf_link_hash_entry *) bh;
3476 h->type = STT_OBJECT;
3478 if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h))
3482 s = bfd_make_section (abfd,
3483 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
3486 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3487 || !bfd_set_section_alignment (abfd, s, ptralign))
3490 if (htab->sgot == NULL && !create_got_section (abfd, info))
3494 const char *secname;
3499 for (sec = abfd->sections; sec; sec = sec->next)
3501 secflags = bfd_get_section_flags (abfd, sec);
3502 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
3503 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
3505 secname = bfd_get_section_name (abfd, sec);
3506 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
3507 strcpy (relname, ".rela");
3508 strcat (relname, secname);
3509 if (bfd_get_section_by_name (abfd, secname))
3511 s = bfd_make_section (abfd, relname);
3513 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3514 || !bfd_set_section_alignment (abfd, s, ptralign))
3519 if (bed->want_dynbss)
3521 /* The .dynbss section is a place to put symbols which are defined
3522 by dynamic objects, are referenced by regular objects, and are
3523 not functions. We must allocate space for them in the process
3524 image and use a R_*_COPY reloc to tell the dynamic linker to
3525 initialize them at run time. The linker script puts the .dynbss
3526 section into the .bss section of the final image. */
3527 s = bfd_make_section (abfd, ".dynbss");
3530 || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
3532 /* The .rel[a].bss section holds copy relocs. This section is not
3533 normally needed. We need to create it here, though, so that the
3534 linker will map it to an output section. We can't just create it
3535 only if we need it, because we will not know whether we need it
3536 until we have seen all the input files, and the first time the
3537 main linker code calls BFD after examining all the input files
3538 (size_dynamic_sections) the input sections have already been
3539 mapped to the output sections. If the section turns out not to
3540 be needed, we can discard it later. We will never need this
3541 section when generating a shared object, since they do not use
3543 if (!bfd_link_pic (info))
3545 s = bfd_make_section (abfd, (bed->default_use_rela_p
3546 ? ".rela.bss" : ".rel.bss"));
3549 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3550 || !bfd_set_section_alignment (abfd, s, ptralign))
3558 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3560 nds32_elf_copy_indirect_symbol (struct bfd_link_info *info,
3561 struct elf_link_hash_entry *dir,
3562 struct elf_link_hash_entry *ind)
3564 struct elf_nds32_link_hash_entry *edir, *eind;
3566 edir = (struct elf_nds32_link_hash_entry *) dir;
3567 eind = (struct elf_nds32_link_hash_entry *) ind;
3569 if (eind->dyn_relocs != NULL)
3571 if (edir->dyn_relocs != NULL)
3573 struct elf_nds32_dyn_relocs **pp;
3574 struct elf_nds32_dyn_relocs *p;
3576 if (ind->root.type == bfd_link_hash_indirect)
3579 /* Add reloc counts against the weak sym to the strong sym
3580 list. Merge any entries against the same section. */
3581 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
3583 struct elf_nds32_dyn_relocs *q;
3585 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3586 if (q->sec == p->sec)
3588 q->pc_count += p->pc_count;
3589 q->count += p->count;
3596 *pp = edir->dyn_relocs;
3599 edir->dyn_relocs = eind->dyn_relocs;
3600 eind->dyn_relocs = NULL;
3603 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3607 /* Adjust a symbol defined by a dynamic object and referenced by a
3608 regular object. The current definition is in some section of the
3609 dynamic object, but we're not including those sections. We have to
3610 change the definition to something the rest of the link can
3614 nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3615 struct elf_link_hash_entry *h)
3617 struct elf_nds32_link_hash_table *htab;
3618 struct elf_nds32_link_hash_entry *eh;
3619 struct elf_nds32_dyn_relocs *p;
3622 unsigned int power_of_two;
3624 dynobj = elf_hash_table (info)->dynobj;
3626 /* Make sure we know what is going on here. */
3627 BFD_ASSERT (dynobj != NULL
3629 || h->u.weakdef != NULL
3630 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
3633 /* If this is a function, put it in the procedure linkage table. We
3634 will fill in the contents of the procedure linkage table later,
3635 when we know the address of the .got section. */
3636 if (h->type == STT_FUNC || h->needs_plt)
3638 if (!bfd_link_pic (info)
3641 && h->root.type != bfd_link_hash_undefweak
3642 && h->root.type != bfd_link_hash_undefined)
3644 /* This case can occur if we saw a PLT reloc in an input
3645 file, but the symbol was never referred to by a dynamic
3646 object. In such a case, we don't actually need to build
3647 a procedure linkage table, and we can just do a PCREL
3649 h->plt.offset = (bfd_vma) - 1;
3656 h->plt.offset = (bfd_vma) - 1;
3658 /* If this is a weak symbol, and there is a real definition, the
3659 processor independent code will have arranged for us to see the
3660 real definition first, and we can just use the same value. */
3661 if (h->u.weakdef != NULL)
3663 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3664 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3665 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3666 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3670 /* This is a reference to a symbol defined by a dynamic object which
3671 is not a function. */
3673 /* If we are creating a shared library, we must presume that the
3674 only references to the symbol are via the global offset table.
3675 For such cases we need not do anything here; the relocations will
3676 be handled correctly by relocate_section. */
3677 if (bfd_link_pic (info))
3680 /* If there are no references to this symbol that do not use the
3681 GOT, we don't need to generate a copy reloc. */
3682 if (!h->non_got_ref)
3685 /* If -z nocopyreloc was given, we won't generate them either. */
3686 if (info->nocopyreloc)
3692 eh = (struct elf_nds32_link_hash_entry *) h;
3693 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3695 s = p->sec->output_section;
3696 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
3700 /* If we didn't find any dynamic relocs in sections which needs the
3701 copy reloc, then we'll be keeping the dynamic relocs and avoiding
3709 /* We must allocate the symbol in our .dynbss section, which will
3710 become part of the .bss section of the executable. There will be
3711 an entry for this symbol in the .dynsym section. The dynamic
3712 object will contain position independent code, so all references
3713 from the dynamic object to this symbol will go through the global
3714 offset table. The dynamic linker will use the .dynsym entry to
3715 determine the address it must put in the global offset table, so
3716 both the dynamic object and the regular object will refer to the
3717 same memory location for the variable. */
3719 htab = nds32_elf_hash_table (info);
3721 BFD_ASSERT (s != NULL);
3723 /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker
3724 to copy the initial value out of the dynamic object and into the
3725 runtime process image. We need to remember the offset into the
3726 .rela.bss section we are going to use. */
3727 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3731 srel = htab->srelbss;
3732 BFD_ASSERT (srel != NULL);
3733 srel->size += sizeof (Elf32_External_Rela);
3737 /* We need to figure out the alignment required for this symbol. I
3738 have no idea how ELF linkers handle this. */
3739 power_of_two = bfd_log2 (h->size);
3740 if (power_of_two > 3)
3743 /* Apply the required alignment. */
3744 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3745 if (power_of_two > bfd_get_section_alignment (dynobj, s))
3747 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
3751 /* Define the symbol as being at this point in the section. */
3752 h->root.u.def.section = s;
3753 h->root.u.def.value = s->size;
3755 /* Increment the section size to make room for the symbol. */
3761 /* Allocate space in .plt, .got and associated reloc sections for
3765 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3767 struct bfd_link_info *info;
3768 struct elf_nds32_link_hash_table *htab;
3769 struct elf_nds32_link_hash_entry *eh;
3770 struct elf_nds32_dyn_relocs *p;
3772 if (h->root.type == bfd_link_hash_indirect)
3775 if (h->root.type == bfd_link_hash_warning)
3776 /* When warning symbols are created, they **replace** the "real"
3777 entry in the hash table, thus we never get to see the real
3778 symbol in a hash traversal. So look at it now. */
3779 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3781 info = (struct bfd_link_info *) inf;
3782 htab = nds32_elf_hash_table (info);
3784 eh = (struct elf_nds32_link_hash_entry *) h;
3786 if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
3788 /* Make sure this symbol is output as a dynamic symbol.
3789 Undefined weak syms won't yet be marked as dynamic. */
3790 if (h->dynindx == -1 && !h->forced_local)
3792 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3796 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
3798 asection *s = htab->splt;
3800 /* If this is the first .plt entry, make room for the special
3803 s->size += PLT_ENTRY_SIZE;
3805 h->plt.offset = s->size;
3807 /* If this symbol is not defined in a regular file, and we are
3808 not generating a shared library, then set the symbol to this
3809 location in the .plt. This is required to make function
3810 pointers compare as equal between the normal executable and
3811 the shared library. */
3812 if (!bfd_link_pic (info) && !h->def_regular)
3814 h->root.u.def.section = s;
3815 h->root.u.def.value = h->plt.offset;
3818 /* Make room for this entry. */
3819 s->size += PLT_ENTRY_SIZE;
3821 /* We also need to make an entry in the .got.plt section, which
3822 will be placed in the .got section by the linker script. */
3823 htab->sgotplt->size += 4;
3825 /* We also need to make an entry in the .rel.plt section. */
3826 htab->srelplt->size += sizeof (Elf32_External_Rela);
3830 h->plt.offset = (bfd_vma) - 1;
3836 h->plt.offset = (bfd_vma) - 1;
3840 if (h->got.refcount > 0)
3844 int tls_type = elf32_nds32_hash_entry (h)->tls_type;
3846 /* Make sure this symbol is output as a dynamic symbol.
3847 Undefined weak syms won't yet be marked as dynamic. */
3848 if (h->dynindx == -1 && !h->forced_local)
3850 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3855 h->got.offset = s->size;
3857 if (tls_type == GOT_UNKNOWN)
3859 else if (tls_type == GOT_NORMAL
3860 || tls_type == GOT_TLS_IE)
3861 /* Need a GOT slot. */
3864 dyn = htab->root.dynamic_sections_created;
3865 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
3866 htab->srelgot->size += sizeof (Elf32_External_Rela);
3869 h->got.offset = (bfd_vma) - 1;
3871 if (eh->dyn_relocs == NULL)
3874 /* In the shared -Bsymbolic case, discard space allocated for
3875 dynamic pc-relative relocs against symbols which turn out to be
3876 defined in regular objects. For the normal shared case, discard
3877 space for pc-relative relocs that have become local due to symbol
3878 visibility changes. */
3880 if (bfd_link_pic (info))
3882 if (h->def_regular && (h->forced_local || info->symbolic))
3884 struct elf_nds32_dyn_relocs **pp;
3886 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
3888 p->count -= p->pc_count;
3899 /* For the non-shared case, discard space for relocs against
3900 symbols which turn out to need copy relocs or are not dynamic. */
3905 || (htab->root.dynamic_sections_created
3906 && (h->root.type == bfd_link_hash_undefweak
3907 || h->root.type == bfd_link_hash_undefined))))
3909 /* Make sure this symbol is output as a dynamic symbol.
3910 Undefined weak syms won't yet be marked as dynamic. */
3911 if (h->dynindx == -1 && !h->forced_local)
3913 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3917 /* If that succeeded, we know we'll be keeping all the
3919 if (h->dynindx != -1)
3923 eh->dyn_relocs = NULL;
3928 /* Finally, allocate space. */
3929 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3931 asection *sreloc = elf_section_data (p->sec)->sreloc;
3932 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3938 /* Find any dynamic relocs that apply to read-only sections. */
3941 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3943 struct elf_nds32_link_hash_entry *eh;
3944 struct elf_nds32_dyn_relocs *p;
3946 if (h->root.type == bfd_link_hash_warning)
3947 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3949 eh = (struct elf_nds32_link_hash_entry *) h;
3950 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3952 asection *s = p->sec->output_section;
3954 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3956 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3958 info->flags |= DF_TEXTREL;
3960 /* Not an error, just cut short the traversal. */
3967 /* Set the sizes of the dynamic sections. */
3970 nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3971 struct bfd_link_info *info)
3973 struct elf_nds32_link_hash_table *htab;
3979 htab = nds32_elf_hash_table (info);
3980 dynobj = htab->root.dynobj;
3981 BFD_ASSERT (dynobj != NULL);
3983 if (htab->root.dynamic_sections_created)
3985 /* Set the contents of the .interp section to the interpreter. */
3986 if (!bfd_link_pic (info) && !info->nointerp)
3988 s = bfd_get_section_by_name (dynobj, ".interp");
3989 BFD_ASSERT (s != NULL);
3990 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3991 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3995 /* Set up .got offsets for local syms, and space for local dynamic
3997 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3999 bfd_signed_vma *local_got;
4000 bfd_signed_vma *end_local_got;
4001 bfd_size_type locsymcount;
4002 Elf_Internal_Shdr *symtab_hdr;
4005 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4008 for (s = ibfd->sections; s != NULL; s = s->next)
4010 struct elf_nds32_dyn_relocs *p;
4012 for (p = ((struct elf_nds32_dyn_relocs *)
4013 elf_section_data (s)->local_dynrel);
4014 p != NULL; p = p->next)
4016 if (!bfd_is_abs_section (p->sec)
4017 && bfd_is_abs_section (p->sec->output_section))
4019 /* Input section has been discarded, either because
4020 it is a copy of a linkonce section or due to
4021 linker script /DISCARD/, so we'll be discarding
4024 else if (p->count != 0)
4026 srel = elf_section_data (p->sec)->sreloc;
4027 srel->size += p->count * sizeof (Elf32_External_Rela);
4028 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
4029 info->flags |= DF_TEXTREL;
4034 local_got = elf_local_got_refcounts (ibfd);
4038 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4039 locsymcount = symtab_hdr->sh_info;
4040 end_local_got = local_got + locsymcount;
4042 srel = htab->srelgot;
4043 for (; local_got < end_local_got; ++local_got)
4047 *local_got = s->size;
4049 if (bfd_link_pic (info))
4050 srel->size += sizeof (Elf32_External_Rela);
4053 *local_got = (bfd_vma) - 1;
4057 /* Allocate global sym .plt and .got entries, and space for global
4058 sym dynamic relocs. */
4059 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info);
4061 /* We now have determined the sizes of the various dynamic sections.
4062 Allocate memory for them. */
4064 for (s = dynobj->sections; s != NULL; s = s->next)
4066 if ((s->flags & SEC_LINKER_CREATED) == 0)
4069 if (s == htab->splt)
4071 /* Strip this section if we don't need it; see the
4074 else if (s == htab->sgot)
4076 got_size += s->size;
4078 else if (s == htab->sgotplt)
4080 got_size += s->size;
4082 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4084 if (s->size != 0 && s != htab->srelplt)
4087 /* We use the reloc_count field as a counter if we need
4088 to copy relocs into the output file. */
4093 /* It's not one of our sections, so don't allocate space. */
4099 /* If we don't need this section, strip it from the
4100 output file. This is mostly to handle .rela.bss and
4101 .rela.plt. We must create both sections in
4102 create_dynamic_sections, because they must be created
4103 before the linker maps input sections to output
4104 sections. The linker does that before
4105 adjust_dynamic_symbol is called, and it is that
4106 function which decides whether anything needs to go
4107 into these sections. */
4108 s->flags |= SEC_EXCLUDE;
4112 /* Allocate memory for the section contents. We use bfd_zalloc
4113 here in case unused entries are not reclaimed before the
4114 section's contents are written out. This should not happen,
4115 but this way if it does, we get a R_NDS32_NONE reloc instead
4117 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
4118 if (s->contents == NULL)
4123 if (htab->root.dynamic_sections_created)
4125 /* Add some entries to the .dynamic section. We fill in the
4126 values later, in nds32_elf_finish_dynamic_sections, but we
4127 must add the entries now so that we get the correct size for
4128 the .dynamic section. The DT_DEBUG entry is filled in by the
4129 dynamic linker and used by the debugger. */
4130 #define add_dynamic_entry(TAG, VAL) \
4131 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4133 if (!bfd_link_pic (info))
4135 if (!add_dynamic_entry (DT_DEBUG, 0))
4139 if (htab->splt->size != 0)
4141 if (!add_dynamic_entry (DT_PLTGOT, 0)
4142 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4143 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4144 || !add_dynamic_entry (DT_JMPREL, 0))
4150 if (!add_dynamic_entry (DT_RELA, 0)
4151 || !add_dynamic_entry (DT_RELASZ, 0)
4152 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4155 /* If any dynamic relocs apply to a read-only section,
4156 then we need a DT_TEXTREL entry. */
4157 if ((info->flags & DF_TEXTREL) == 0)
4158 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
4161 if ((info->flags & DF_TEXTREL) != 0)
4163 if (!add_dynamic_entry (DT_TEXTREL, 0))
4168 #undef add_dynamic_entry
4173 static bfd_reloc_status_type
4174 nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd,
4175 bfd_vma relocation, bfd_byte *location)
4179 bfd_reloc_status_type flag;
4180 unsigned int rightshift = howto->rightshift;
4181 unsigned int bitpos = howto->bitpos;
4183 /* If the size is negative, negate RELOCATION. This isn't very
4185 if (howto->size < 0)
4186 relocation = -relocation;
4188 /* Get the value we are going to relocate. */
4189 size = bfd_get_reloc_size (howto);
4196 return bfd_reloc_ok;
4198 x = bfd_getb16 (location);
4201 x = bfd_getb32 (location);
4205 /* Check for overflow. FIXME: We may drop bits during the addition
4206 which we don't check for. We must either check at every single
4207 operation, which would be tedious, or we must do the computations
4208 in a type larger than bfd_vma, which would be inefficient. */
4209 flag = bfd_reloc_ok;
4210 if (howto->complain_on_overflow != complain_overflow_dont)
4212 bfd_vma addrmask, fieldmask, signmask, ss;
4215 /* Get the values to be added together. For signed and unsigned
4216 relocations, we assume that all values should be truncated to
4217 the size of an address. For bitfields, all the bits matter.
4218 See also bfd_check_overflow. */
4219 fieldmask = N_ONES (howto->bitsize);
4220 signmask = ~fieldmask;
4221 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
4222 a = (relocation & addrmask) >> rightshift;
4223 b = (x & howto->src_mask & addrmask) >> bitpos;
4225 switch (howto->complain_on_overflow)
4227 case complain_overflow_signed:
4228 /* If any sign bits are set, all sign bits must be set.
4229 That is, A must be a valid negative address after
4231 signmask = ~(fieldmask >> 1);
4234 case complain_overflow_bitfield:
4235 /* Much like the signed check, but for a field one bit
4236 wider. We allow a bitfield to represent numbers in the
4237 range -2**n to 2**n-1, where n is the number of bits in the
4238 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
4239 can't overflow, which is exactly what we want. */
4241 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
4242 flag = bfd_reloc_overflow;
4244 /* We only need this next bit of code if the sign bit of B
4245 is below the sign bit of A. This would only happen if
4246 SRC_MASK had fewer bits than BITSIZE. Note that if
4247 SRC_MASK has more bits than BITSIZE, we can get into
4248 trouble; we would need to verify that B is in range, as
4249 we do for A above. */
4250 ss = ((~howto->src_mask) >> 1) & howto->src_mask;
4253 /* Set all the bits above the sign bit. */
4256 /* Now we can do the addition. */
4259 /* See if the result has the correct sign. Bits above the
4260 sign bit are junk now; ignore them. If the sum is
4261 positive, make sure we did not have all negative inputs;
4262 if the sum is negative, make sure we did not have all
4263 positive inputs. The test below looks only at the sign
4264 bits, and it really just
4265 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
4267 We mask with addrmask here to explicitly allow an address
4268 wrap-around. The Linux kernel relies on it, and it is
4269 the only way to write assembler code which can run when
4270 loaded at a location 0x80000000 away from the location at
4271 which it is linked. */
4272 if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask)
4273 flag = bfd_reloc_overflow;
4277 case complain_overflow_unsigned:
4278 /* Checking for an unsigned overflow is relatively easy:
4279 trim the addresses and add, and trim the result as well.
4280 Overflow is normally indicated when the result does not
4281 fit in the field. However, we also need to consider the
4282 case when, e.g., fieldmask is 0x7fffffff or smaller, an
4283 input is 0x80000000, and bfd_vma is only 32 bits; then we
4284 will get sum == 0, but there is an overflow, since the
4285 inputs did not fit in the field. Instead of doing a
4286 separate test, we can check for this by or-ing in the
4287 operands when testing for the sum overflowing its final
4289 sum = (a + b) & addrmask;
4290 if ((a | b | sum) & signmask)
4291 flag = bfd_reloc_overflow;
4299 /* Put RELOCATION in the right bits. */
4300 relocation >>= (bfd_vma) rightshift;
4301 relocation <<= (bfd_vma) bitpos;
4303 /* Add RELOCATION to the right bits of X. */
4305 Because the relaxation may generate duplicate relocation at one address,
4306 an addition to immediate in the instruction may cause the relocation added
4308 This bug should be fixed in assembler, but a check is also needed here. */
4309 if (howto->partial_inplace)
4310 x = ((x & ~howto->dst_mask)
4311 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
4313 x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask));
4316 /* Put the relocated value back in the object file. */
4326 bfd_putb16 (x, location);
4329 bfd_putb32 (x, location);
4336 static bfd_reloc_status_type
4337 nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd,
4338 asection *input_section, bfd_byte *contents,
4339 bfd_vma address, bfd_vma value, bfd_vma addend)
4343 /* Sanity check the address. */
4344 if (address > bfd_get_section_limit (input_bfd, input_section))
4345 return bfd_reloc_outofrange;
4347 /* This function assumes that we are dealing with a basic relocation
4348 against a symbol. We want to compute the value of the symbol to
4349 relocate to. This is just VALUE, the value of the symbol, plus
4350 ADDEND, any addend associated with the reloc. */
4351 relocation = value + addend;
4353 /* If the relocation is PC relative, we want to set RELOCATION to
4354 the distance between the symbol (currently in RELOCATION) and the
4355 location we are relocating. Some targets (e.g., i386-aout)
4356 arrange for the contents of the section to be the negative of the
4357 offset of the location within the section; for such targets
4358 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
4359 simply leave the contents of the section as zero; for such
4360 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
4361 need to subtract out the offset of the location within the
4362 section (which is just ADDRESS). */
4363 if (howto->pc_relative)
4365 relocation -= (input_section->output_section->vma
4366 + input_section->output_offset);
4367 if (howto->pcrel_offset)
4368 relocation -= address;
4371 return nds32_relocate_contents (howto, input_bfd, relocation,
4372 contents + address);
4376 nds32_elf_output_symbol_hook (struct bfd_link_info *info,
4378 Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED,
4379 asection *input_sec,
4380 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
4383 FILE *sym_ld_script = NULL;
4384 struct elf_nds32_link_hash_table *table;
4386 table = nds32_elf_hash_table (info);
4387 sym_ld_script = table->sym_ld_script;
4391 if (!h || !name || *name == '\0')
4394 if (input_sec->flags & SEC_EXCLUDE)
4397 if (!check_start_export_sym)
4399 fprintf (sym_ld_script, "SECTIONS\n{\n");
4400 check_start_export_sym = 1;
4403 if (h->root.type == bfd_link_hash_defined
4404 || h->root.type == bfd_link_hash_defweak)
4406 if (!h->root.u.def.section->output_section)
4409 if (bfd_is_const_section (input_sec))
4410 source = input_sec->name;
4412 source = input_sec->owner->filename;
4414 fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n",
4415 h->root.root.string,
4416 (long) (h->root.u.def.value
4417 + h->root.u.def.section->output_section->vma
4418 + h->root.u.def.section->output_offset), source);
4424 /* Relocate an NDS32/D ELF section.
4425 There is some attempt to make this function usable for many architectures,
4426 both for RELA and REL type relocs, if only to serve as a learning tool.
4428 The RELOCATE_SECTION function is called by the new ELF backend linker
4429 to handle the relocations for a section.
4431 The relocs are always passed as Rela structures; if the section
4432 actually uses Rel structures, the r_addend field will always be
4435 This function is responsible for adjust the section contents as
4436 necessary, and (if using Rela relocs and generating a
4437 relocatable output file) adjusting the reloc addend as
4440 This function does not have to worry about setting the reloc
4441 address or the reloc symbol index.
4443 LOCAL_SYMS is a pointer to the swapped in local symbols.
4445 LOCAL_SECTIONS is an array giving the section in the input file
4446 corresponding to the st_shndx field of each local symbol.
4448 The global hash table entry for the global symbols can be found
4449 via elf_sym_hashes (input_bfd).
4451 When generating relocatable output, this function must handle
4452 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4453 going to be the section symbol corresponding to the output
4454 section, which means that the addend must be adjusted
4458 dtpoff_base (struct bfd_link_info *info)
4460 /* If tls_sec is NULL, we should have signalled an error already. */
4461 if (elf_hash_table (info)->tls_sec == NULL)
4463 return elf_hash_table (info)->tls_sec->vma;
4467 nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
4468 struct bfd_link_info * info,
4470 asection * input_section,
4471 bfd_byte * contents,
4472 Elf_Internal_Rela * relocs,
4473 Elf_Internal_Sym * local_syms,
4474 asection ** local_sections)
4476 Elf_Internal_Shdr *symtab_hdr;
4477 struct elf_link_hash_entry **sym_hashes;
4478 Elf_Internal_Rela *rel, *relend;
4479 bfd_boolean ret = TRUE; /* Assume success. */
4481 bfd_reloc_status_type r;
4482 const char *errmsg = NULL;
4484 struct elf_nds32_link_hash_table *htab;
4486 bfd_vma *local_got_offsets;
4487 asection *sgot, *splt, *sreloc;
4488 bfd_vma high_address;
4489 struct elf_nds32_link_hash_table *table;
4490 int eliminate_gc_relocs;
4491 bfd_vma fpbase_addr;
4493 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4494 sym_hashes = elf_sym_hashes (input_bfd);
4495 htab = nds32_elf_hash_table (info);
4496 high_address = bfd_get_section_limit (input_bfd, input_section);
4498 dynobj = htab->root.dynobj;
4499 local_got_offsets = elf_local_got_offsets (input_bfd);
4506 relend = relocs + input_section->reloc_count;
4508 table = nds32_elf_hash_table (info);
4509 eliminate_gc_relocs = table->eliminate_gc_relocs;
4510 /* By this time, we can adjust the value of _SDA_BASE_. */
4511 if ((!bfd_link_relocatable (info)))
4513 is_SDA_BASE_set = 1;
4514 r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE);
4515 if (r != bfd_reloc_ok)
4519 if (is_ITB_BASE_set == 0)
4521 /* Set the _ITB_BASE_. */
4522 if (!nds32_elf_ex9_itb_base (info))
4524 _bfd_error_handler (_("%B: error: Cannot set _ITB_BASE_"),
4526 bfd_set_error (bfd_error_bad_value);
4530 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
4531 if (!nds32_elf_ifc_reloc ())
4532 _bfd_error_handler (_("error: IFC relocation error."));
4534 /* Relocation for .ex9.itable. */
4535 if (table->target_optimize & NDS32_RELAX_EX9_ON
4536 || (table->ex9_import_file && table->update_ex9_table))
4537 nds32_elf_ex9_reloc_jmp (info);
4539 /* Use gp as fp to prevent truncated fit. Because in relaxation time
4540 the fp value is set as gp, and it has be reverted for instruction
4542 fpbase_addr = elf_gp (output_bfd);
4544 for (rel = relocs; rel < relend; rel++)
4546 enum elf_nds32_reloc_type r_type;
4547 reloc_howto_type *howto = NULL;
4548 unsigned long r_symndx;
4549 struct elf_link_hash_entry *h = NULL;
4550 Elf_Internal_Sym *sym = NULL;
4554 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
4555 ensure it's zero (we use REL relocs, not RELA). Therefore this
4556 should be assigning zero to `addend', but for clarity we use
4559 bfd_vma addend = rel->r_addend;
4560 bfd_vma offset = rel->r_offset;
4562 r_type = ELF32_R_TYPE (rel->r_info);
4563 if (r_type >= R_NDS32_max)
4565 _bfd_error_handler (_("%B: error: unknown relocation type %d."),
4567 bfd_set_error (bfd_error_bad_value);
4572 if (r_type == R_NDS32_GNU_VTENTRY
4573 || r_type == R_NDS32_GNU_VTINHERIT
4574 || r_type == R_NDS32_NONE
4575 || r_type == R_NDS32_RELA_GNU_VTENTRY
4576 || r_type == R_NDS32_RELA_GNU_VTINHERIT
4577 || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA)
4578 || r_type == R_NDS32_DATA
4579 || r_type == R_NDS32_TRAN
4580 || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7))
4583 /* If we enter the fp-as-gp region. Resolve the address
4585 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN
4586 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
4590 /* Distance to relocation of best fp-base is encoded in R_SYM. */
4591 dist = rel->r_addend >> 16;
4592 fpbase_addr = calculate_memory_address (input_bfd, rel + dist,
4593 local_syms, symtab_hdr);
4595 else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END
4596 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
4598 fpbase_addr = elf_gp (output_bfd);
4601 if (((r_type >= R_NDS32_DWARF2_OP1_RELA
4602 && r_type <= R_NDS32_DWARF2_LEB_RELA)
4603 || r_type >= R_NDS32_RELAX_ENTRY) && !bfd_link_relocatable (info))
4606 howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
4607 r_symndx = ELF32_R_SYM (rel->r_info);
4609 /* This is a final link. */
4614 if (r_symndx < symtab_hdr->sh_info)
4617 sym = local_syms + r_symndx;
4618 sec = local_sections[r_symndx];
4620 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4621 addend = rel->r_addend;
4625 /* External symbol. */
4626 bfd_boolean warned, ignored, unresolved_reloc;
4627 int symndx = r_symndx - symtab_hdr->sh_info;
4629 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4630 r_symndx, symtab_hdr, sym_hashes, h, sec,
4631 relocation, unresolved_reloc, warned,
4634 /* la $fp, _FP_BASE_ is per-function (region).
4635 Handle it specially. */
4636 switch ((int) r_type)
4638 case R_NDS32_SDA19S0_RELA:
4639 case R_NDS32_SDA15S0_RELA:
4640 case R_NDS32_20_RELA:
4641 if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string,
4644 relocation = fpbase_addr;
4651 if (bfd_link_relocatable (info))
4653 /* This is a relocatable link. We don't have to change
4654 anything, unless the reloc is against a section symbol,
4655 in which case we have to adjust according to where the
4656 section symbol winds up in the output section. */
4657 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
4658 rel->r_addend += sec->output_offset + sym->st_value;
4663 /* Sanity check the address. */
4664 if (offset > high_address)
4666 r = bfd_reloc_outofrange;
4670 if ((r_type >= R_NDS32_DWARF2_OP1_RELA
4671 && r_type <= R_NDS32_DWARF2_LEB_RELA)
4672 || r_type >= R_NDS32_RELAX_ENTRY)
4675 switch ((int) r_type)
4677 case R_NDS32_GOTOFF:
4678 /* Relocation is relative to the start of the global offset
4679 table (for ld24 rx, #uimm24), e.g. access at label+addend
4681 ld24 rx. #label@GOTOFF + addend
4683 case R_NDS32_GOTOFF_HI20:
4684 case R_NDS32_GOTOFF_LO12:
4685 case R_NDS32_GOTOFF_LO15:
4686 case R_NDS32_GOTOFF_LO19:
4687 BFD_ASSERT (sgot != NULL);
4689 relocation -= elf_gp (output_bfd);
4692 case R_NDS32_9_PLTREL:
4693 case R_NDS32_25_PLTREL:
4694 /* Relocation is to the entry for this symbol in the
4695 procedure linkage table. */
4697 /* The native assembler will generate a 25_PLTREL reloc
4698 for a local symbol if you assemble a call from one
4699 section to another when using -K pic. */
4703 if (h->forced_local)
4706 /* We didn't make a PLT entry for this symbol. This
4707 happens when statically linking PIC code, or when
4708 using -Bsymbolic. */
4709 if (h->plt.offset == (bfd_vma) - 1)
4712 relocation = (splt->output_section->vma
4713 + splt->output_offset + h->plt.offset);
4716 case R_NDS32_PLT_GOTREL_HI20:
4717 case R_NDS32_PLT_GOTREL_LO12:
4718 case R_NDS32_PLT_GOTREL_LO15:
4719 case R_NDS32_PLT_GOTREL_LO19:
4720 case R_NDS32_PLT_GOTREL_LO20:
4721 if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1)
4723 /* We didn't make a PLT entry for this symbol. This
4724 happens when statically linking PIC code, or when
4725 using -Bsymbolic. */
4726 relocation -= elf_gp (output_bfd);
4730 relocation = (splt->output_section->vma
4731 + splt->output_offset + h->plt.offset);
4733 relocation -= elf_gp (output_bfd);
4736 case R_NDS32_PLTREL_HI20:
4737 case R_NDS32_PLTREL_LO12:
4739 /* Relocation is to the entry for this symbol in the
4740 procedure linkage table. */
4742 /* The native assembler will generate a 25_PLTREL reloc
4743 for a local symbol if you assemble a call from one
4744 section to another when using -K pic. */
4748 if (h->forced_local)
4751 if (h->plt.offset == (bfd_vma) - 1)
4752 /* We didn't make a PLT entry for this symbol. This
4753 happens when statically linking PIC code, or when
4754 using -Bsymbolic. */
4760 relocation = (splt->output_section->vma
4761 + splt->output_offset
4762 + h->plt.offset + 4)
4763 - (input_section->output_section->vma
4764 + input_section->output_offset
4769 case R_NDS32_GOTPC20:
4770 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4771 ld24 rx,#_GLOBAL_OFFSET_TABLE_ */
4772 relocation = elf_gp (output_bfd);
4775 case R_NDS32_GOTPC_HI20:
4776 case R_NDS32_GOTPC_LO12:
4778 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4780 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
4781 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4784 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
4785 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4787 relocation = elf_gp (output_bfd);
4788 relocation -= (input_section->output_section->vma
4789 + input_section->output_offset + rel->r_offset);
4795 case R_NDS32_GOT_HI20:
4796 case R_NDS32_GOT_LO12:
4797 case R_NDS32_GOT_LO15:
4798 case R_NDS32_GOT_LO19:
4799 /* Relocation is to the entry for this symbol in the global
4801 BFD_ASSERT (sgot != NULL);
4808 off = h->got.offset;
4809 BFD_ASSERT (off != (bfd_vma) - 1);
4810 dyn = htab->root.dynamic_sections_created;
4811 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4812 bfd_link_pic (info),
4814 || (bfd_link_pic (info)
4817 || h->forced_local) && h->def_regular))
4819 /* This is actually a static link, or it is a
4820 -Bsymbolic link and the symbol is defined
4821 locally, or the symbol was forced to be local
4822 because of a version file. We must initialize
4823 this entry in the global offset table. Since the
4824 offset must always be a multiple of 4, we use the
4825 least significant bit to record whether we have
4826 initialized it already.
4828 When doing a dynamic link, we create a .rela.got
4829 relocation entry to initialize the value. This
4830 is done in the finish_dynamic_symbol routine. */
4835 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4839 relocation = sgot->output_section->vma + sgot->output_offset + off
4840 - elf_gp (output_bfd);
4847 BFD_ASSERT (local_got_offsets != NULL
4848 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
4850 off = local_got_offsets[r_symndx];
4852 /* The offset must always be a multiple of 4. We use
4853 the least significant bit to record whether we have
4854 already processed this entry. */
4859 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4861 if (bfd_link_pic (info))
4864 Elf_Internal_Rela outrel;
4866 /* We need to generate a R_NDS32_RELATIVE reloc
4867 for the dynamic linker. */
4868 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4869 BFD_ASSERT (srelgot != NULL);
4871 outrel.r_offset = (elf_gp (output_bfd)
4872 + sgot->output_offset + off);
4873 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
4874 outrel.r_addend = relocation;
4875 loc = srelgot->contents;
4877 srelgot->reloc_count * sizeof (Elf32_External_Rela);
4878 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4879 ++srelgot->reloc_count;
4881 local_got_offsets[r_symndx] |= 1;
4883 relocation = sgot->output_section->vma + sgot->output_offset + off
4884 - elf_gp (output_bfd);
4889 case R_NDS32_16_RELA:
4890 case R_NDS32_20_RELA:
4891 case R_NDS32_5_RELA:
4892 case R_NDS32_32_RELA:
4893 case R_NDS32_9_PCREL_RELA:
4894 case R_NDS32_WORD_9_PCREL_RELA:
4895 case R_NDS32_10_UPCREL_RELA:
4896 case R_NDS32_15_PCREL_RELA:
4897 case R_NDS32_17_PCREL_RELA:
4898 case R_NDS32_25_PCREL_RELA:
4899 case R_NDS32_HI20_RELA:
4900 case R_NDS32_LO12S3_RELA:
4901 case R_NDS32_LO12S2_RELA:
4902 case R_NDS32_LO12S2_DP_RELA:
4903 case R_NDS32_LO12S2_SP_RELA:
4904 case R_NDS32_LO12S1_RELA:
4905 case R_NDS32_LO12S0_RELA:
4906 case R_NDS32_LO12S0_ORI_RELA:
4907 if (bfd_link_pic (info) && r_symndx != 0
4908 && (input_section->flags & SEC_ALLOC) != 0
4909 && (eliminate_gc_relocs == 0
4910 || (sec && (sec->flags & SEC_EXCLUDE) == 0))
4911 && ((r_type != R_NDS32_9_PCREL_RELA
4912 && r_type != R_NDS32_WORD_9_PCREL_RELA
4913 && r_type != R_NDS32_10_UPCREL_RELA
4914 && r_type != R_NDS32_15_PCREL_RELA
4915 && r_type != R_NDS32_17_PCREL_RELA
4916 && r_type != R_NDS32_25_PCREL_RELA
4917 && !(r_type == R_NDS32_32_RELA
4918 && strcmp (input_section->name, ".eh_frame") == 0))
4919 || (h != NULL && h->dynindx != -1
4920 && (!info->symbolic || !h->def_regular))))
4922 Elf_Internal_Rela outrel;
4923 bfd_boolean skip, relocate;
4926 /* When generating a shared object, these relocations
4927 are copied into the output file to be resolved at run
4934 name = bfd_elf_string_from_elf_section
4935 (input_bfd, elf_elfheader (input_bfd)->e_shstrndx,
4936 elf_section_data (input_section)->rela.hdr->sh_name);
4940 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
4941 && strcmp (bfd_get_section_name (input_bfd,
4945 sreloc = bfd_get_section_by_name (dynobj, name);
4946 BFD_ASSERT (sreloc != NULL);
4952 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
4956 if (outrel.r_offset == (bfd_vma) - 1)
4958 else if (outrel.r_offset == (bfd_vma) - 2)
4959 skip = TRUE, relocate = TRUE;
4960 outrel.r_offset += (input_section->output_section->vma
4961 + input_section->output_offset);
4964 memset (&outrel, 0, sizeof outrel);
4965 else if (r_type == R_NDS32_17_PCREL_RELA
4966 || r_type == R_NDS32_15_PCREL_RELA
4967 || r_type == R_NDS32_25_PCREL_RELA)
4969 BFD_ASSERT (h != NULL && h->dynindx != -1);
4970 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4971 outrel.r_addend = rel->r_addend;
4975 /* h->dynindx may be -1 if this symbol was marked to
4978 || ((info->symbolic || h->dynindx == -1)
4982 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
4983 outrel.r_addend = relocation + rel->r_addend;
4987 BFD_ASSERT (h->dynindx != -1);
4988 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4989 outrel.r_addend = rel->r_addend;
4993 loc = sreloc->contents;
4994 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
4995 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4996 ++sreloc->reloc_count;
4998 /* If this reloc is against an external symbol, we do
4999 not want to fiddle with the addend. Otherwise, we
5000 need to include the symbol value so that it becomes
5001 an addend for the dynamic reloc. */
5007 case R_NDS32_25_ABS_RELA:
5008 if (bfd_link_pic (info))
5011 (_("%s: warning: cannot deal R_NDS32_25_ABS_RELA in shared "
5012 "mode."), bfd_get_filename (input_bfd));
5017 case R_NDS32_9_PCREL:
5018 r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section,
5020 sec, relocation, addend);
5025 Elf_Internal_Rela *lorel;
5027 /* We allow an arbitrary number of HI20 relocs before the
5028 LO12 reloc. This permits gcc to emit the HI and LO relocs
5030 for (lorel = rel + 1;
5032 && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++)
5035 && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3
5036 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2
5037 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1
5038 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0))
5040 nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel,
5041 contents, relocation + addend);
5045 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5046 contents, offset, relocation,
5052 case R_NDS32_GOT17S2_RELA:
5053 case R_NDS32_GOT15S2_RELA:
5057 BFD_ASSERT (sgot != NULL);
5063 off = h->got.offset;
5064 BFD_ASSERT (off != (bfd_vma) - 1);
5066 dyn = htab->root.dynamic_sections_created;
5067 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL
5068 (dyn, bfd_link_pic (info), h)
5069 || (bfd_link_pic (info)
5075 /* This is actually a static link, or it is a
5076 -Bsymbolic link and the symbol is defined
5077 locally, or the symbol was forced to be local
5078 because of a version file. We must initialize
5079 this entry in the global offset table. Since the
5080 offset must always be a multiple of 4, we use the
5081 least significant bit to record whether we have
5082 initialized it already.
5084 When doing a dynamic link, we create a .rela.got
5085 relocation entry to initialize the value. This
5086 is done in the finish_dynamic_symbol routine. */
5091 bfd_put_32 (output_bfd, relocation,
5092 sgot->contents + off);
5101 BFD_ASSERT (local_got_offsets != NULL
5102 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5104 off = local_got_offsets[r_symndx];
5106 /* The offset must always be a multiple of 4. We use
5107 the least significant bit to record whether we have
5108 already processed this entry. */
5113 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
5115 if (bfd_link_pic (info))
5118 Elf_Internal_Rela outrel;
5120 /* We need to generate a R_NDS32_RELATIVE reloc
5121 for the dynamic linker. */
5122 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
5123 BFD_ASSERT (srelgot != NULL);
5125 outrel.r_offset = (elf_gp (output_bfd)
5126 + sgot->output_offset + off);
5127 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5128 outrel.r_addend = relocation;
5129 loc = srelgot->contents;
5131 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5132 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5133 ++srelgot->reloc_count;
5135 local_got_offsets[r_symndx] |= 1;
5138 relocation = sgot->output_section->vma + sgot->output_offset + off
5139 - elf_gp (output_bfd);
5141 if (relocation & align)
5143 /* Incorrect alignment. */
5145 (_("%B: warning: unaligned access to GOT entry."), input_bfd);
5147 r = bfd_reloc_dangerous;
5152 case R_NDS32_SDA16S3_RELA:
5153 case R_NDS32_SDA15S3_RELA:
5154 case R_NDS32_SDA15S3:
5158 case R_NDS32_SDA17S2_RELA:
5159 case R_NDS32_SDA15S2_RELA:
5160 case R_NDS32_SDA12S2_SP_RELA:
5161 case R_NDS32_SDA12S2_DP_RELA:
5162 case R_NDS32_SDA15S2:
5163 case R_NDS32_SDA_FP7U2_RELA:
5167 case R_NDS32_SDA18S1_RELA:
5168 case R_NDS32_SDA15S1_RELA:
5169 case R_NDS32_SDA15S1:
5173 case R_NDS32_SDA19S0_RELA:
5174 case R_NDS32_SDA15S0_RELA:
5175 case R_NDS32_SDA15S0:
5179 BFD_ASSERT (sec != NULL);
5181 /* If the symbol is in the abs section, the out_bfd will be null.
5182 This happens when the relocation has a symbol@GOTOFF. */
5183 r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE);
5184 if (r != bfd_reloc_ok)
5187 (_("%B: warning: relocate SDA_BASE failed."), input_bfd);
5192 /* At this point `relocation' contains the object's
5194 if (r_type == R_NDS32_SDA_FP7U2_RELA)
5196 relocation -= fpbase_addr;
5200 /* Now it contains the offset from _SDA_BASE_. */
5202 /* Make sure alignment is correct. */
5204 if (relocation & align)
5206 /* Incorrect alignment. */
5208 (_("%B(%A): warning: unaligned small data access of type %d."),
5209 input_bfd, input_section, r_type);
5216 case R_NDS32_17IFC_PCREL_RELA:
5217 case R_NDS32_10IFCU_PCREL_RELA:
5221 case R_NDS32_TLS_LE_HI20:
5222 case R_NDS32_TLS_LE_LO12:
5223 case R_NDS32_TLS_LE_20:
5224 case R_NDS32_TLS_LE_15S0:
5225 case R_NDS32_TLS_LE_15S1:
5226 case R_NDS32_TLS_LE_15S2:
5227 if (elf_hash_table (info)->tls_sec != NULL)
5228 relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET);
5230 case R_NDS32_TLS_IE_HI20:
5231 case R_NDS32_TLS_IE_LO12S2:
5233 /* Relocation is to the entry for this symbol in the global
5235 unsigned int tls_type;
5237 Elf_Internal_Rela outrel;
5242 BFD_ASSERT (sgot != NULL);
5247 off = h->got.offset;
5248 BFD_ASSERT (off != (bfd_vma) - 1);
5249 dyn = htab->root.dynamic_sections_created;
5250 tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type;
5251 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
5252 && (!bfd_link_pic (info)
5253 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5258 /* Never happen currently. */
5259 BFD_ASSERT (local_got_offsets != NULL
5260 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5262 off = local_got_offsets[r_symndx];
5264 tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx];
5266 relocation = sgot->output_section->vma + sgot->output_offset + off;
5268 if (r_type == R_NDS32_TLS_IE_LO12S2)
5271 /* The offset must always be a multiple of 4. We use
5272 the least significant bit to record whether we have
5273 already processed this entry. */
5278 bfd_boolean need_relocs = FALSE;
5279 srelgot = htab->srelgot;
5280 if ((bfd_link_pic (info) || indx != 0)
5282 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5283 || h->root.type != bfd_link_hash_undefweak))
5286 BFD_ASSERT (srelgot != NULL);
5288 if (tls_type & GOT_TLS_IE)
5292 if (h->dynindx == 0)
5293 outrel.r_addend = relocation - dtpoff_base (info);
5295 outrel.r_addend = 0;
5296 outrel.r_offset = (sgot->output_section->vma
5297 + sgot->output_offset
5300 ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF);
5302 loc = srelgot->contents;
5304 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5305 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5306 ++srelgot->reloc_count;
5309 bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET,
5310 sgot->contents + off);
5316 /* DON'T fall through. */
5319 /* OLD_NDS32_RELOC. */
5321 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5322 contents, offset, relocation, addend);
5326 switch ((int) r_type)
5328 case R_NDS32_20_RELA:
5329 case R_NDS32_5_RELA:
5330 case R_NDS32_9_PCREL_RELA:
5331 case R_NDS32_WORD_9_PCREL_RELA:
5332 case R_NDS32_10_UPCREL_RELA:
5333 case R_NDS32_15_PCREL_RELA:
5334 case R_NDS32_17_PCREL_RELA:
5335 case R_NDS32_25_PCREL_RELA:
5336 case R_NDS32_25_ABS_RELA:
5337 case R_NDS32_HI20_RELA:
5338 case R_NDS32_LO12S3_RELA:
5339 case R_NDS32_LO12S2_RELA:
5340 case R_NDS32_LO12S2_DP_RELA:
5341 case R_NDS32_LO12S2_SP_RELA:
5342 case R_NDS32_LO12S1_RELA:
5343 case R_NDS32_LO12S0_RELA:
5344 case R_NDS32_LO12S0_ORI_RELA:
5345 case R_NDS32_SDA16S3_RELA:
5346 case R_NDS32_SDA17S2_RELA:
5347 case R_NDS32_SDA18S1_RELA:
5348 case R_NDS32_SDA19S0_RELA:
5349 case R_NDS32_SDA15S3_RELA:
5350 case R_NDS32_SDA15S2_RELA:
5351 case R_NDS32_SDA12S2_DP_RELA:
5352 case R_NDS32_SDA12S2_SP_RELA:
5353 case R_NDS32_SDA15S1_RELA:
5354 case R_NDS32_SDA15S0_RELA:
5355 case R_NDS32_SDA_FP7U2_RELA:
5356 case R_NDS32_9_PLTREL:
5357 case R_NDS32_25_PLTREL:
5359 case R_NDS32_GOT_HI20:
5360 case R_NDS32_GOT_LO12:
5361 case R_NDS32_GOT_LO15:
5362 case R_NDS32_GOT_LO19:
5363 case R_NDS32_GOT15S2_RELA:
5364 case R_NDS32_GOT17S2_RELA:
5365 case R_NDS32_GOTPC20:
5366 case R_NDS32_GOTPC_HI20:
5367 case R_NDS32_GOTPC_LO12:
5368 case R_NDS32_GOTOFF:
5369 case R_NDS32_GOTOFF_HI20:
5370 case R_NDS32_GOTOFF_LO12:
5371 case R_NDS32_GOTOFF_LO15:
5372 case R_NDS32_GOTOFF_LO19:
5373 case R_NDS32_PLTREL_HI20:
5374 case R_NDS32_PLTREL_LO12:
5375 case R_NDS32_PLT_GOTREL_HI20:
5376 case R_NDS32_PLT_GOTREL_LO12:
5377 case R_NDS32_PLT_GOTREL_LO15:
5378 case R_NDS32_PLT_GOTREL_LO19:
5379 case R_NDS32_PLT_GOTREL_LO20:
5380 case R_NDS32_17IFC_PCREL_RELA:
5381 case R_NDS32_10IFCU_PCREL_RELA:
5382 case R_NDS32_TLS_LE_HI20:
5383 case R_NDS32_TLS_LE_LO12:
5384 case R_NDS32_TLS_IE_HI20:
5385 case R_NDS32_TLS_IE_LO12S2:
5386 case R_NDS32_TLS_LE_20:
5387 case R_NDS32_TLS_LE_15S0:
5388 case R_NDS32_TLS_LE_15S1:
5389 case R_NDS32_TLS_LE_15S2:
5390 /* Instruction related relocs must handle endian properly. */
5391 /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */
5392 r = nds32_elf_final_link_relocate (howto, input_bfd,
5393 input_section, contents,
5394 rel->r_offset, relocation,
5399 /* All other relocs can use default handler. */
5400 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5401 contents, rel->r_offset,
5402 relocation, rel->r_addend);
5408 if (r != bfd_reloc_ok)
5410 /* FIXME: This should be generic enough to go in a utility. */
5414 name = h->root.root.string;
5417 name = bfd_elf_string_from_elf_section
5418 (input_bfd, symtab_hdr->sh_link, sym->st_name);
5419 if (name == NULL || *name == '\0')
5420 name = bfd_section_name (input_bfd, sec);
5428 case bfd_reloc_overflow:
5429 (*info->callbacks->reloc_overflow)
5430 (info, (h ? &h->root : NULL), name, howto->name,
5431 (bfd_vma) 0, input_bfd, input_section, offset);
5434 case bfd_reloc_undefined:
5435 (*info->callbacks->undefined_symbol)
5436 (info, name, input_bfd, input_section, offset, TRUE);
5439 case bfd_reloc_outofrange:
5440 errmsg = _("internal error: out of range error");
5443 case bfd_reloc_notsupported:
5444 errmsg = _("internal error: unsupported relocation error");
5447 case bfd_reloc_dangerous:
5448 errmsg = _("internal error: dangerous error");
5452 errmsg = _("internal error: unknown error");
5456 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
5457 input_section, offset);
5466 /* Finish up dynamic symbol handling. We set the contents of various
5467 dynamic sections here. */
5470 nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5471 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
5473 struct elf_nds32_link_hash_table *htab;
5476 htab = nds32_elf_hash_table (info);
5478 if (h->plt.offset != (bfd_vma) - 1)
5486 bfd_vma local_plt_offset;
5487 Elf_Internal_Rela rela;
5489 /* This symbol has an entry in the procedure linkage table. Set
5492 BFD_ASSERT (h->dynindx != -1);
5495 sgot = htab->sgotplt;
5496 srela = htab->srelplt;
5497 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
5499 /* Get the index in the procedure linkage table which
5500 corresponds to this symbol. This is the index of this symbol
5501 in all the symbols for which we are making plt entries. The
5502 first entry in the procedure linkage table is reserved. */
5503 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
5505 /* Get the offset into the .got table of the entry that
5506 corresponds to this function. Each .got entry is 4 bytes.
5507 The first three are reserved. */
5508 got_offset = (plt_index + 3) * 4;
5510 /* Fill in the entry in the procedure linkage table. */
5511 if (!bfd_link_pic (info))
5515 insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma
5516 + sgot->output_offset + got_offset) >> 12)
5518 bfd_putb32 (insn, splt->contents + h->plt.offset);
5520 insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma
5521 + sgot->output_offset + got_offset) & 0x0fff)
5523 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
5525 insn = PLT_ENTRY_WORD2;
5526 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
5528 insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff);
5529 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
5531 insn = PLT_ENTRY_WORD4
5532 + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff);
5533 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
5534 local_plt_offset = 12;
5538 /* sda_base must be set at this time. */
5542 /* FIXME, sda_base is 65536, it will damage opcode. */
5543 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5544 offset = sgot->output_section->vma + sgot->output_offset + got_offset
5545 - elf_gp (output_bfd);
5546 insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff);
5547 bfd_putb32 (insn, splt->contents + h->plt.offset);
5549 insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff);
5550 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
5552 insn = PLT_PIC_ENTRY_WORD2;
5553 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
5555 insn = PLT_PIC_ENTRY_WORD3;
5556 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
5558 insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff);
5559 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
5561 insn = PLT_PIC_ENTRY_WORD5
5562 + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff);
5563 bfd_putb32 (insn, splt->contents + h->plt.offset + 20);
5565 local_plt_offset = 16;
5568 /* Fill in the entry in the global offset table,
5569 so it will fall through to the next instruction for the first time. */
5570 bfd_put_32 (output_bfd,
5571 (splt->output_section->vma + splt->output_offset
5572 + h->plt.offset + local_plt_offset),
5573 sgot->contents + got_offset);
5575 /* Fill in the entry in the .rela.plt section. */
5576 rela.r_offset = (sgot->output_section->vma
5577 + sgot->output_offset + got_offset);
5578 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT);
5580 loc = srela->contents;
5581 loc += plt_index * sizeof (Elf32_External_Rela);
5582 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5584 if (!h->def_regular)
5586 /* Mark the symbol as undefined, rather than as defined in
5587 the .plt section. Leave the value alone. */
5588 sym->st_shndx = SHN_UNDEF;
5589 if (!h->ref_regular_nonweak)
5594 if (h->got.offset != (bfd_vma) - 1)
5598 Elf_Internal_Rela rela;
5600 /* This symbol has an entry in the global offset table.
5604 srela = htab->srelgot;
5605 BFD_ASSERT (sgot != NULL && srela != NULL);
5607 rela.r_offset = (sgot->output_section->vma
5608 + sgot->output_offset + (h->got.offset & ~1));
5610 /* If this is a -Bsymbolic link, and the symbol is defined
5611 locally, we just want to emit a RELATIVE reloc. Likewise if
5612 the symbol was forced to be local because of a version file.
5613 The entry in the global offset table will already have been
5614 initialized in the relocate_section function. */
5615 if (bfd_link_pic (info)
5617 || h->dynindx == -1 || h->forced_local) && h->def_regular)
5619 rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5620 rela.r_addend = (h->root.u.def.value
5621 + h->root.u.def.section->output_section->vma
5622 + h->root.u.def.section->output_offset);
5626 BFD_ASSERT ((h->got.offset & 1) == 0);
5627 bfd_put_32 (output_bfd, (bfd_vma) 0,
5628 sgot->contents + h->got.offset);
5629 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT);
5633 loc = srela->contents;
5634 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
5635 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5636 ++srela->reloc_count;
5642 Elf_Internal_Rela rela;
5644 /* This symbols needs a copy reloc. Set it up. */
5646 BFD_ASSERT (h->dynindx != -1
5647 && (h->root.type == bfd_link_hash_defined
5648 || h->root.type == bfd_link_hash_defweak));
5650 s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss");
5651 BFD_ASSERT (s != NULL);
5653 rela.r_offset = (h->root.u.def.value
5654 + h->root.u.def.section->output_section->vma
5655 + h->root.u.def.section->output_offset);
5656 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY);
5659 loc += s->reloc_count * sizeof (Elf32_External_Rela);
5660 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5664 /* Mark some specially defined symbols as absolute. */
5665 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5666 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5667 sym->st_shndx = SHN_ABS;
5673 /* Finish up the dynamic sections. */
5676 nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5678 struct elf_nds32_link_hash_table *htab;
5683 htab = nds32_elf_hash_table (info);
5684 dynobj = htab->root.dynobj;
5686 sgot = htab->sgotplt;
5687 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5689 if (htab->root.dynamic_sections_created)
5692 Elf32_External_Dyn *dyncon, *dynconend;
5694 BFD_ASSERT (sgot != NULL && sdyn != NULL);
5696 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5697 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5699 for (; dyncon < dynconend; dyncon++)
5701 Elf_Internal_Dyn dyn;
5704 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5717 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
5718 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5723 dyn.d_un.d_val = s->size;
5724 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5728 /* My reading of the SVR4 ABI indicates that the
5729 procedure linkage table relocs (DT_JMPREL) should be
5730 included in the overall relocs (DT_RELA). This is
5731 what Solaris does. However, UnixWare can not handle
5732 that case. Therefore, we override the DT_RELASZ entry
5733 here to make it not include the JMPREL relocs. Since
5734 the linker script arranges for .rela.plt to follow all
5735 other relocation sections, we don't have to worry
5736 about changing the DT_RELA entry. */
5737 if (htab->srelplt != NULL)
5740 dyn.d_un.d_val -= s->size;
5742 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5747 /* Fill in the first entry in the procedure linkage table. */
5749 if (splt && splt->size > 0)
5751 if (bfd_link_pic (info))
5756 /* FIXME, sda_base is 65536, it will damage opcode. */
5757 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5758 offset = sgot->output_section->vma + sgot->output_offset + 4
5759 - elf_gp (output_bfd);
5760 insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff);
5761 bfd_putb32 (insn, splt->contents);
5763 /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */
5764 /* here has a typo? */
5765 insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff);
5766 bfd_putb32 (insn, splt->contents + 4);
5768 insn = PLT0_PIC_ENTRY_WORD2;
5769 bfd_putb32 (insn, splt->contents + 8);
5771 insn = PLT0_PIC_ENTRY_WORD3;
5772 bfd_putb32 (insn, splt->contents + 12);
5774 insn = PLT0_PIC_ENTRY_WORD4;
5775 bfd_putb32 (insn, splt->contents + 16);
5777 insn = PLT0_PIC_ENTRY_WORD5;
5778 bfd_putb32 (insn, splt->contents + 20);
5785 /* addr = .got + 4 */
5786 addr = sgot->output_section->vma + sgot->output_offset + 4;
5787 insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff);
5788 bfd_putb32 (insn, splt->contents);
5790 insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff);
5791 bfd_putb32 (insn, splt->contents + 4);
5793 insn = PLT0_ENTRY_WORD2;
5794 bfd_putb32 (insn, splt->contents + 8);
5796 insn = PLT0_ENTRY_WORD3;
5797 bfd_putb32 (insn, splt->contents + 12);
5799 insn = PLT0_ENTRY_WORD4;
5800 bfd_putb32 (insn, splt->contents + 16);
5803 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
5808 /* Fill in the first three entries in the global offset table. */
5809 if (sgot && sgot->size > 0)
5812 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5814 bfd_put_32 (output_bfd,
5815 sdyn->output_section->vma + sdyn->output_offset,
5817 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5818 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5820 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5827 /* Set the right machine number. */
5830 nds32_elf_object_p (bfd *abfd)
5832 static unsigned int cur_arch = 0;
5834 if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH))
5836 /* E_N1_ARCH is a wild card, so it is set only when no others exist. */
5837 cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH);
5844 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1);
5847 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h);
5849 case E_NDS_ARCH_STAR_V2_0:
5850 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2);
5852 case E_NDS_ARCH_STAR_V3_0:
5853 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3);
5855 case E_NDS_ARCH_STAR_V3_M:
5856 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m);
5863 /* Store the machine number in the flags field. */
5866 nds32_elf_final_write_processing (bfd *abfd,
5867 bfd_boolean linker ATTRIBUTE_UNUSED)
5870 static unsigned int cur_mach = 0;
5872 if (bfd_mach_n1 != bfd_get_mach (abfd))
5874 cur_mach = bfd_get_mach (abfd);
5880 /* Only happen when object is empty, since the case is abandon. */
5882 val |= E_NDS_ABI_AABI;
5883 val |= E_NDS32_ELF_VER_1_4;
5888 case bfd_mach_n1h_v2:
5889 val = E_NDS_ARCH_STAR_V2_0;
5891 case bfd_mach_n1h_v3:
5892 val = E_NDS_ARCH_STAR_V3_0;
5894 case bfd_mach_n1h_v3m:
5895 val = E_NDS_ARCH_STAR_V3_M;
5902 elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH;
5903 elf_elfheader (abfd)->e_flags |= val;
5906 /* Function to keep NDS32 specific file flags. */
5909 nds32_elf_set_private_flags (bfd *abfd, flagword flags)
5911 BFD_ASSERT (!elf_flags_init (abfd)
5912 || elf_elfheader (abfd)->e_flags == flags);
5914 elf_elfheader (abfd)->e_flags = flags;
5915 elf_flags_init (abfd) = TRUE;
5920 convert_e_flags (unsigned int e_flags, unsigned int arch)
5922 if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9)
5924 /* From 0.9 to 1.0. */
5925 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0;
5927 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5928 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
5929 if (arch == E_NDS_ARCH_STAR_V1_0)
5936 /* From 1.0 to 2.0. */
5937 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0;
5939 /* Clear E_NDS32_HAS_MFUSR_PC_INST. */
5940 e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST;
5942 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5943 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
5948 nds32_check_vec_size (bfd *ibfd)
5950 static unsigned int nds32_vec_size = 0;
5952 asection *sec_t = NULL;
5953 bfd_byte *contents = NULL;
5955 sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags");
5957 if (sec_t && sec_t->size >= 4)
5959 /* Get vec_size in file. */
5960 unsigned int flag_t;
5962 nds32_get_section_contents (ibfd, sec_t, &contents, TRUE);
5963 flag_t = bfd_get_32 (ibfd, contents);
5965 /* The value could only be 4 or 16. */
5967 if (!nds32_vec_size)
5968 /* Set if not set yet. */
5969 nds32_vec_size = (flag_t & 0x3);
5970 else if (nds32_vec_size != (flag_t & 0x3))
5973 (_("%B: ISR vector size mismatch"
5974 " with previous modules, previous %u-byte, current %u-byte"),
5976 nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff,
5977 (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff);
5981 /* Only keep the first vec_size section. */
5982 sec_t->flags |= SEC_EXCLUDE;
5988 /* Merge backend specific data from an object file to the output
5989 object file when linking. */
5992 nds32_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
5994 bfd *obfd = info->output_bfd;
5997 flagword out_16regs;
5999 flagword out_no_mac;
6001 flagword out_version;
6002 flagword in_version;
6003 flagword out_fpu_config;
6004 flagword in_fpu_config;
6006 /* TODO: Revise to use object-attributes instead. */
6007 if (!nds32_check_vec_size (ibfd))
6010 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6011 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6014 if (bfd_little_endian (ibfd) != bfd_little_endian (obfd))
6017 (_("%B: warning: Endian mismatch with previous modules."), ibfd);
6019 bfd_set_error (bfd_error_bad_value);
6023 in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION;
6024 if (in_version == E_NDS32_ELF_VER_1_2)
6027 (_("%B: warning: Older version of object file encountered, "
6028 "Please recompile with current tool chain."), ibfd);
6031 /* We may need to merge V1 and V2 arch object files to V2. */
6032 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6033 != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
6035 /* Need to convert version. */
6036 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6037 == E_NDS_ARCH_STAR_RESERVED)
6039 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6041 else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9
6042 || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6043 > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
6045 elf_elfheader (obfd)->e_flags =
6046 convert_e_flags (elf_elfheader (obfd)->e_flags,
6047 (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH));
6051 elf_elfheader (ibfd)->e_flags =
6052 convert_e_flags (elf_elfheader (ibfd)->e_flags,
6053 (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH));
6057 /* Extract some flags. */
6058 in_flags = elf_elfheader (ibfd)->e_flags
6059 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
6060 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
6062 /* The following flags need special treatment. */
6063 in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
6064 in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
6065 in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF;
6067 /* Extract some flags. */
6068 out_flags = elf_elfheader (obfd)->e_flags
6069 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
6070 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
6072 /* The following flags need special treatment. */
6073 out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
6074 out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
6075 out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF;
6076 out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION;
6077 if (!elf_flags_init (obfd))
6079 /* If the input is the default architecture then do not
6080 bother setting the flags for the output architecture,
6081 instead allow future merges to do this. If no future
6082 merges ever set these flags then they will retain their
6083 unitialised values, which surprise surprise, correspond
6084 to the default values. */
6085 if (bfd_get_arch_info (ibfd)->the_default)
6088 elf_flags_init (obfd) = TRUE;
6089 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6091 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6092 && bfd_get_arch_info (obfd)->the_default)
6094 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6095 bfd_get_mach (ibfd));
6101 /* Check flag compatibility. */
6102 if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI))
6105 (_("%B: error: ABI mismatch with previous modules."), ibfd);
6107 bfd_set_error (bfd_error_bad_value);
6111 if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH))
6113 if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH))
6116 (_("%B: error: Instruction set mismatch with previous modules."), ibfd);
6118 bfd_set_error (bfd_error_bad_value);
6123 /* When linking with V1.2 and V1.3 objects together the output is V1.2.
6124 and perf ext1 and DIV are mergerd to perf ext1. */
6125 if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2)
6127 elf_elfheader (obfd)->e_flags =
6128 (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6129 | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6130 | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6131 ? E_NDS32_HAS_EXT_INST : 0)
6132 | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6133 ? E_NDS32_HAS_EXT_INST : 0)
6134 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6135 | ((in_version > out_version) ? out_version : in_version);
6139 if (in_version != out_version)
6141 (_("%B: warning: Incompatible elf-versions %s and %s."),
6142 ibfd, nds32_elfver_strtab[out_version],
6143 nds32_elfver_strtab[in_version]);
6145 elf_elfheader (obfd)->e_flags = in_flags | out_flags
6146 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6147 | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config)
6148 | (in_version > out_version ? out_version : in_version);
6154 /* Display the flags field. */
6157 nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6159 FILE *file = (FILE *) ptr;
6161 BFD_ASSERT (abfd != NULL && ptr != NULL);
6163 _bfd_elf_print_private_bfd_data (abfd, ptr);
6165 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
6167 switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)
6171 fprintf (file, _(": n1 instructions"));
6174 fprintf (file, _(": n1h instructions"));
6184 nds32_elf_action_discarded (asection *sec)
6188 (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0)
6191 return _bfd_elf_default_action_discarded (sec);
6195 nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
6196 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
6197 Elf_Internal_Sym *sym)
6200 switch (ELF32_R_TYPE (rel->r_info))
6202 case R_NDS32_GNU_VTINHERIT:
6203 case R_NDS32_GNU_VTENTRY:
6204 case R_NDS32_RELA_GNU_VTINHERIT:
6205 case R_NDS32_RELA_GNU_VTENTRY:
6209 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6213 nds32_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec,
6214 const Elf_Internal_Rela *relocs)
6216 /* Update the got entry reference counts for the section being removed. */
6217 Elf_Internal_Shdr *symtab_hdr;
6218 struct elf_link_hash_entry **sym_hashes;
6219 bfd_signed_vma *local_got_refcounts;
6220 const Elf_Internal_Rela *rel, *relend;
6222 elf_section_data (sec)->local_dynrel = NULL;
6224 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6225 sym_hashes = elf_sym_hashes (abfd);
6226 local_got_refcounts = elf_local_got_refcounts (abfd);
6228 relend = relocs + sec->reloc_count;
6229 for (rel = relocs; rel < relend; rel++)
6231 unsigned long r_symndx;
6232 struct elf_link_hash_entry *h = NULL;
6234 r_symndx = ELF32_R_SYM (rel->r_info);
6235 if (r_symndx >= symtab_hdr->sh_info)
6237 /* External symbol. */
6238 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6239 while (h->root.type == bfd_link_hash_indirect
6240 || h->root.type == bfd_link_hash_warning)
6241 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6244 switch (ELF32_R_TYPE (rel->r_info))
6246 case R_NDS32_GOT_HI20:
6247 case R_NDS32_GOT_LO12:
6248 case R_NDS32_GOT_LO15:
6249 case R_NDS32_GOT_LO19:
6250 case R_NDS32_GOT17S2_RELA:
6251 case R_NDS32_GOT15S2_RELA:
6252 case R_NDS32_GOTOFF:
6253 case R_NDS32_GOTOFF_HI20:
6254 case R_NDS32_GOTOFF_LO12:
6255 case R_NDS32_GOTOFF_LO15:
6256 case R_NDS32_GOTOFF_LO19:
6258 case R_NDS32_GOTPC_HI20:
6259 case R_NDS32_GOTPC_LO12:
6260 case R_NDS32_GOTPC20:
6263 if (h->got.refcount > 0)
6268 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
6269 local_got_refcounts[r_symndx]--;
6273 case R_NDS32_16_RELA:
6274 case R_NDS32_20_RELA:
6275 case R_NDS32_5_RELA:
6276 case R_NDS32_32_RELA:
6277 case R_NDS32_HI20_RELA:
6278 case R_NDS32_LO12S3_RELA:
6279 case R_NDS32_LO12S2_RELA:
6280 case R_NDS32_LO12S2_DP_RELA:
6281 case R_NDS32_LO12S2_SP_RELA:
6282 case R_NDS32_LO12S1_RELA:
6283 case R_NDS32_LO12S0_RELA:
6284 case R_NDS32_LO12S0_ORI_RELA:
6285 case R_NDS32_SDA16S3_RELA:
6286 case R_NDS32_SDA17S2_RELA:
6287 case R_NDS32_SDA18S1_RELA:
6288 case R_NDS32_SDA19S0_RELA:
6289 case R_NDS32_SDA15S3_RELA:
6290 case R_NDS32_SDA15S2_RELA:
6291 case R_NDS32_SDA12S2_DP_RELA:
6292 case R_NDS32_SDA12S2_SP_RELA:
6293 case R_NDS32_SDA15S1_RELA:
6294 case R_NDS32_SDA15S0_RELA:
6295 case R_NDS32_SDA_FP7U2_RELA:
6296 case R_NDS32_15_PCREL_RELA:
6297 case R_NDS32_17_PCREL_RELA:
6298 case R_NDS32_25_PCREL_RELA:
6301 struct elf_nds32_link_hash_entry *eh;
6302 struct elf_nds32_dyn_relocs **pp;
6303 struct elf_nds32_dyn_relocs *p;
6305 if (!bfd_link_pic (info) && h->plt.refcount > 0)
6306 h->plt.refcount -= 1;
6308 eh = (struct elf_nds32_link_hash_entry *) h;
6310 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6313 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
6314 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA
6315 || ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA)
6325 case R_NDS32_9_PLTREL:
6326 case R_NDS32_25_PLTREL:
6329 if (h->plt.refcount > 0)
6342 /* Look through the relocs for a section during the first phase.
6343 Since we don't do .gots or .plts, we just need to consider the
6344 virtual table relocs for gc. */
6347 nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
6348 asection *sec, const Elf_Internal_Rela *relocs)
6350 Elf_Internal_Shdr *symtab_hdr;
6351 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
6352 const Elf_Internal_Rela *rel;
6353 const Elf_Internal_Rela *rel_end;
6354 struct elf_nds32_link_hash_table *htab;
6356 asection *sreloc = NULL;
6358 if (bfd_link_relocatable (info))
6361 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6362 sym_hashes = elf_sym_hashes (abfd);
6364 sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
6365 if (!elf_bad_symtab (abfd))
6366 sym_hashes_end -= symtab_hdr->sh_info;
6368 htab = nds32_elf_hash_table (info);
6369 dynobj = htab->root.dynobj;
6371 rel_end = relocs + sec->reloc_count;
6372 for (rel = relocs; rel < rel_end; rel++)
6374 enum elf_nds32_reloc_type r_type;
6375 struct elf_link_hash_entry *h;
6376 unsigned long r_symndx;
6377 int tls_type, old_tls_type;
6379 r_symndx = ELF32_R_SYM (rel->r_info);
6380 r_type = ELF32_R_TYPE (rel->r_info);
6381 if (r_symndx < symtab_hdr->sh_info)
6385 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6386 while (h->root.type == bfd_link_hash_indirect
6387 || h->root.type == bfd_link_hash_warning)
6388 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6391 /* Some relocs require a global offset table. We create
6392 got section here, since these relocation need got section
6393 and it is not created yet. */
6394 if (htab->sgot == NULL)
6398 case R_NDS32_GOT_HI20:
6399 case R_NDS32_GOT_LO12:
6400 case R_NDS32_GOT_LO15:
6401 case R_NDS32_GOT_LO19:
6402 case R_NDS32_GOT17S2_RELA:
6403 case R_NDS32_GOT15S2_RELA:
6404 case R_NDS32_GOTOFF:
6405 case R_NDS32_GOTOFF_HI20:
6406 case R_NDS32_GOTOFF_LO12:
6407 case R_NDS32_GOTOFF_LO15:
6408 case R_NDS32_GOTOFF_LO19:
6409 case R_NDS32_GOTPC20:
6410 case R_NDS32_GOTPC_HI20:
6411 case R_NDS32_GOTPC_LO12:
6413 case R_NDS32_TLS_IE_HI20:
6414 case R_NDS32_TLS_IE_LO12S2:
6416 htab->root.dynobj = dynobj = abfd;
6417 if (!create_got_section (dynobj, info))
6426 switch ((int) r_type)
6428 case R_NDS32_GOT_HI20:
6429 case R_NDS32_GOT_LO12:
6430 case R_NDS32_GOT_LO15:
6431 case R_NDS32_GOT_LO19:
6433 case R_NDS32_TLS_IE_HI20:
6434 case R_NDS32_TLS_IE_LO12S2:
6437 case R_NDS32_TLS_IE_HI20:
6438 case R_NDS32_TLS_IE_LO12S2:
6439 tls_type = GOT_TLS_IE;
6442 tls_type = GOT_NORMAL;
6447 old_tls_type = elf32_nds32_hash_entry (h)->tls_type;
6448 h->got.refcount += 1;
6452 bfd_signed_vma *local_got_refcounts;
6454 /* This is a global offset table entry for a local
6456 local_got_refcounts = elf_local_got_refcounts (abfd);
6457 if (local_got_refcounts == NULL)
6461 size = symtab_hdr->sh_info;
6462 size *= sizeof (bfd_signed_vma);
6463 local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size);
6464 if (local_got_refcounts == NULL)
6466 elf_local_got_refcounts (abfd) = local_got_refcounts;
6468 local_got_refcounts[r_symndx] += 1;
6469 old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx];
6472 /* We will already have issued an error message if there
6473 is a TLS/non-TLS mismatch, based on the symbol
6474 type. So just combine any TLS types needed. */
6475 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
6476 && tls_type != GOT_NORMAL)
6477 tls_type |= old_tls_type;
6479 if (old_tls_type != tls_type)
6482 elf32_nds32_hash_entry (h)->tls_type = tls_type;
6484 elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type;
6487 case R_NDS32_9_PLTREL:
6488 case R_NDS32_25_PLTREL:
6489 case R_NDS32_PLTREL_HI20:
6490 case R_NDS32_PLTREL_LO12:
6491 case R_NDS32_PLT_GOTREL_HI20:
6492 case R_NDS32_PLT_GOTREL_LO12:
6493 case R_NDS32_PLT_GOTREL_LO15:
6494 case R_NDS32_PLT_GOTREL_LO19:
6495 case R_NDS32_PLT_GOTREL_LO20:
6497 /* This symbol requires a procedure linkage table entry. We
6498 actually build the entry in adjust_dynamic_symbol,
6499 because this might be a case of linking PIC code without
6500 linking in any dynamic objects, in which case we don't
6501 need to generate a procedure linkage table after all. */
6503 /* If this is a local symbol, we resolve it directly without
6504 creating a procedure linkage table entry. */
6508 if (h->forced_local)
6511 elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL;
6513 h->plt.refcount += 1;
6516 case R_NDS32_16_RELA:
6517 case R_NDS32_20_RELA:
6518 case R_NDS32_5_RELA:
6519 case R_NDS32_32_RELA:
6520 case R_NDS32_HI20_RELA:
6521 case R_NDS32_LO12S3_RELA:
6522 case R_NDS32_LO12S2_RELA:
6523 case R_NDS32_LO12S2_DP_RELA:
6524 case R_NDS32_LO12S2_SP_RELA:
6525 case R_NDS32_LO12S1_RELA:
6526 case R_NDS32_LO12S0_RELA:
6527 case R_NDS32_LO12S0_ORI_RELA:
6528 case R_NDS32_SDA16S3_RELA:
6529 case R_NDS32_SDA17S2_RELA:
6530 case R_NDS32_SDA18S1_RELA:
6531 case R_NDS32_SDA19S0_RELA:
6532 case R_NDS32_SDA15S3_RELA:
6533 case R_NDS32_SDA15S2_RELA:
6534 case R_NDS32_SDA12S2_DP_RELA:
6535 case R_NDS32_SDA12S2_SP_RELA:
6536 case R_NDS32_SDA15S1_RELA:
6537 case R_NDS32_SDA15S0_RELA:
6538 case R_NDS32_SDA_FP7U2_RELA:
6539 case R_NDS32_15_PCREL_RELA:
6540 case R_NDS32_17_PCREL_RELA:
6541 case R_NDS32_25_PCREL_RELA:
6543 if (h != NULL && !bfd_link_pic (info))
6546 h->plt.refcount += 1;
6549 /* If we are creating a shared library, and this is a reloc against
6550 a global symbol, or a non PC relative reloc against a local
6551 symbol, then we need to copy the reloc into the shared library.
6552 However, if we are linking with -Bsymbolic, we do not need to
6553 copy a reloc against a global symbol which is defined in an
6554 object we are including in the link (i.e., DEF_REGULAR is set).
6555 At this point we have not seen all the input files, so it is
6556 possible that DEF_REGULAR is not set now but will be set later
6557 (it is never cleared). We account for that possibility below by
6558 storing information in the dyn_relocs field of the hash table
6559 entry. A similar situation occurs when creating shared libraries
6560 and symbol visibility changes render the symbol local.
6562 If on the other hand, we are creating an executable, we may need
6563 to keep relocations for symbols satisfied by a dynamic library
6564 if we manage to avoid copy relocs for the symbol. */
6565 if ((bfd_link_pic (info)
6566 && (sec->flags & SEC_ALLOC) != 0
6567 && ((r_type != R_NDS32_25_PCREL_RELA
6568 && r_type != R_NDS32_15_PCREL_RELA
6569 && r_type != R_NDS32_17_PCREL_RELA
6570 && !(r_type == R_NDS32_32_RELA
6571 && strcmp (sec->name, ".eh_frame") == 0))
6574 || h->root.type == bfd_link_hash_defweak
6575 || !h->def_regular))))
6576 || (!bfd_link_pic (info)
6577 && (sec->flags & SEC_ALLOC) != 0
6579 && (h->root.type == bfd_link_hash_defweak
6580 || !h->def_regular)))
6582 struct elf_nds32_dyn_relocs *p;
6583 struct elf_nds32_dyn_relocs **head;
6586 htab->root.dynobj = dynobj = abfd;
6588 /* When creating a shared object, we must copy these
6589 relocs into the output file. We create a reloc
6590 section in dynobj and make room for the reloc. */
6595 name = bfd_elf_string_from_elf_section
6596 (abfd, elf_elfheader (abfd)->e_shstrndx,
6597 elf_section_data (sec)->rela.hdr->sh_name);
6601 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6602 && strcmp (bfd_get_section_name (abfd, sec),
6605 sreloc = bfd_get_section_by_name (dynobj, name);
6610 sreloc = bfd_make_section (dynobj, name);
6611 flags = (SEC_HAS_CONTENTS | SEC_READONLY
6612 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
6613 if ((sec->flags & SEC_ALLOC) != 0)
6614 flags |= SEC_ALLOC | SEC_LOAD;
6616 || !bfd_set_section_flags (dynobj, sreloc, flags)
6617 || !bfd_set_section_alignment (dynobj, sreloc, 2))
6620 elf_section_type (sreloc) = SHT_RELA;
6622 elf_section_data (sec)->sreloc = sreloc;
6625 /* If this is a global symbol, we count the number of
6626 relocations we need for this symbol. */
6628 head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs;
6634 Elf_Internal_Sym *isym;
6635 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
6639 /* Track dynamic relocs needed for local syms too. */
6640 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6644 vpp = &elf_section_data (s)->local_dynrel;
6645 head = (struct elf_nds32_dyn_relocs **) vpp;
6649 if (p == NULL || p->sec != sec)
6651 bfd_size_type amt = sizeof (*p);
6652 p = (struct elf_nds32_dyn_relocs *) bfd_alloc (dynobj, amt);
6663 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA
6664 || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
6665 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA)
6670 /* This relocation describes the C++ object vtable hierarchy.
6671 Reconstruct it for later use during GC. */
6672 case R_NDS32_RELA_GNU_VTINHERIT:
6673 case R_NDS32_GNU_VTINHERIT:
6674 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
6678 /* This relocation describes which C++ vtable entries are actually
6679 used. Record for later use during GC. */
6680 case R_NDS32_GNU_VTENTRY:
6681 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
6684 case R_NDS32_RELA_GNU_VTENTRY:
6685 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6694 /* Write VAL in uleb128 format to P, returning a pointer to the
6696 This code is copied from elf-attr.c. */
6699 write_uleb128 (bfd_byte *p, unsigned int val)
6714 static bfd_signed_vma
6715 calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
6716 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr,
6717 int *pic_ext_target)
6719 bfd_signed_vma foff;
6720 bfd_vma symval, addend;
6723 /* Get the value of the symbol referred to by the reloc. */
6724 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6726 Elf_Internal_Sym *isym;
6728 /* A local symbol. */
6729 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6731 if (isym->st_shndx == SHN_UNDEF)
6732 sym_sec = bfd_und_section_ptr;
6733 else if (isym->st_shndx == SHN_ABS)
6734 sym_sec = bfd_abs_section_ptr;
6735 else if (isym->st_shndx == SHN_COMMON)
6736 sym_sec = bfd_com_section_ptr;
6738 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6739 symval = isym->st_value + sym_sec->output_section->vma
6740 + sym_sec->output_offset;
6745 struct elf_link_hash_entry *h;
6748 /* An external symbol. */
6749 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6750 h = elf_sym_hashes (abfd)[indx];
6751 BFD_ASSERT (h != NULL);
6753 if (h->root.type != bfd_link_hash_defined
6754 && h->root.type != bfd_link_hash_defweak)
6755 /* This appears to be a reference to an undefined
6756 symbol. Just ignore it--it will be caught by the
6757 regular reloc processing. */
6759 owner = h->root.u.def.section->owner;
6760 if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC))
6761 *pic_ext_target = 1;
6763 if (h->root.u.def.section->flags & SEC_MERGE)
6765 sym_sec = h->root.u.def.section;
6766 symval = _bfd_merged_section_offset (abfd, &sym_sec,
6767 elf_section_data (sym_sec)->sec_info,
6768 h->root.u.def.value);
6769 symval = symval + sym_sec->output_section->vma
6770 + sym_sec->output_offset;
6773 symval = (h->root.u.def.value
6774 + h->root.u.def.section->output_section->vma
6775 + h->root.u.def.section->output_offset);
6778 addend = irel->r_addend;
6780 foff = (symval + addend
6781 - (irel->r_offset + sec->output_section->vma + sec->output_offset));
6786 calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info,
6787 Elf_Internal_Sym *isymbuf,
6788 Elf_Internal_Rela *irel,
6789 Elf_Internal_Shdr *symtab_hdr)
6793 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6795 Elf_Internal_Sym *isym;
6797 /* A local symbol. */
6798 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6800 if (isym->st_shndx == SHN_UNDEF)
6801 sym_sec = bfd_und_section_ptr;
6802 else if (isym->st_shndx == SHN_ABS)
6803 sym_sec = bfd_abs_section_ptr;
6804 else if (isym->st_shndx == SHN_COMMON)
6805 sym_sec = bfd_com_section_ptr;
6807 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6808 symval = isym->st_value + sym_sec->output_section->vma
6809 + sym_sec->output_offset;
6814 struct elf_link_hash_entry *h;
6815 struct elf_nds32_link_hash_table *htab;
6818 /* An external symbol. */
6819 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6820 h = elf_sym_hashes (abfd)[indx];
6821 BFD_ASSERT (h != NULL);
6822 htab = nds32_elf_hash_table (link_info);
6825 while (h->root.type == bfd_link_hash_indirect
6826 || h->root.type == bfd_link_hash_warning)
6827 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6829 if (h->plt.offset == (bfd_vma) - 1)
6831 if (h->root.type != bfd_link_hash_defined
6832 && h->root.type != bfd_link_hash_defweak)
6833 /* This appears to be a reference to an undefined
6834 * symbol. Just ignore it--it will be caught by the
6835 * regular reloc processing. */
6837 symval = (h->root.u.def.value
6838 + h->root.u.def.section->output_section->vma
6839 + h->root.u.def.section->output_offset);
6842 symval = splt->output_section->vma + h->plt.offset;
6848 static bfd_signed_vma
6849 calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info,
6850 Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel,
6851 Elf_Internal_Shdr *symtab_hdr)
6854 if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
6858 return foff - (irel->r_offset
6859 + sec->output_section->vma + sec->output_offset);
6862 /* Convert a 32-bit instruction to 16-bit one.
6863 INSN is the input 32-bit instruction, INSN16 is the output 16-bit
6864 instruction. If INSN_TYPE is not NULL, it the CGEN instruction
6865 type of INSN16. Return 1 if successful. */
6868 nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
6871 uint16_t insn16 = 0;
6873 unsigned long mach = bfd_get_mach (abfd);
6875 if (N32_SH5 (insn) != 0)
6878 switch (N32_SUB5 (insn))
6880 case N32_ALU1_ADD_SLLI:
6881 case N32_ALU1_ADD_SRLI:
6882 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6884 insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn),
6886 insn_type = NDS32_INSN_ADD333;
6888 else if (N32_IS_RT4 (insn))
6890 if (N32_RT5 (insn) == N32_RA5 (insn))
6891 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn));
6892 else if (N32_RT5 (insn) == N32_RB5 (insn))
6893 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn));
6894 insn_type = NDS32_INSN_ADD45;
6898 case N32_ALU1_SUB_SLLI:
6899 case N32_ALU1_SUB_SRLI:
6900 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6902 insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn),
6904 insn_type = NDS32_INSN_SUB333;
6906 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6908 insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn));
6909 insn_type = NDS32_INSN_SUB45;
6913 case N32_ALU1_AND_SLLI:
6914 case N32_ALU1_AND_SRLI:
6915 /* and $rt, $rt, $rb -> and33 for v3, v3m. */
6916 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6917 && N32_IS_RB3 (insn))
6919 if (N32_RT5 (insn) == N32_RA5 (insn))
6920 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn));
6921 else if (N32_RT5 (insn) == N32_RB5 (insn))
6922 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn));
6924 insn_type = NDS32_INSN_AND33;
6928 case N32_ALU1_XOR_SLLI:
6929 case N32_ALU1_XOR_SRLI:
6930 /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */
6931 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6932 && N32_IS_RB3 (insn))
6934 if (N32_RT5 (insn) == N32_RA5 (insn))
6935 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn));
6936 else if (N32_RT5 (insn) == N32_RB5 (insn))
6937 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn));
6939 insn_type = NDS32_INSN_XOR33;
6943 case N32_ALU1_OR_SLLI:
6944 case N32_ALU1_OR_SRLI:
6945 /* or $rt, $rt, $rb -> or33 for v3, v3m. */
6946 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6947 && N32_IS_RB3 (insn))
6949 if (N32_RT5 (insn) == N32_RA5 (insn))
6950 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn));
6951 else if (N32_RT5 (insn) == N32_RB5 (insn))
6952 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn));
6954 insn_type = NDS32_INSN_OR33;
6958 /* nor $rt, $ra, $ra -> not33 for v3, v3m. */
6959 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn)
6960 && N32_RA5 (insn) == N32_RB5 (insn))
6962 insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn));
6963 insn_type = NDS32_INSN_NOT33;
6967 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6969 insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn));
6970 insn_type = NDS32_INSN_SRAI45;
6975 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6977 insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn));
6978 insn_type = NDS32_INSN_SRLI45;
6983 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8)
6985 insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn),
6987 insn_type = NDS32_INSN_SLLI333;
6992 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6994 insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn));
6995 insn_type = NDS32_INSN_ZEH33;
7000 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7002 insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn));
7003 insn_type = NDS32_INSN_SEB33;
7008 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7010 insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn));
7011 insn_type = NDS32_INSN_SEH33;
7016 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7019 insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn));
7020 insn_type = NDS32_INSN_SLT45;
7025 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7028 insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn));
7029 insn_type = NDS32_INSN_SLTS45;
7034 if ((insn16 & 0x8000) == 0)
7040 *pinsn_type = insn_type;
7045 nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7048 uint16_t insn16 = 0;
7050 unsigned long mach = bfd_get_mach (abfd);
7052 /* TODO: bset, bclr, btgl, btst. */
7053 if (__GF (insn, 6, 4) != 0)
7056 switch (N32_IMMU (insn, 6))
7059 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7060 && N32_IS_RB3 (insn))
7062 if (N32_RT5 (insn) == N32_RA5 (insn))
7063 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn));
7064 else if (N32_RT5 (insn) == N32_RB5 (insn))
7065 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn));
7067 insn_type = NDS32_INSN_MUL33;
7071 if ((insn16 & 0x8000) == 0)
7077 *pinsn_type = insn_type;
7082 nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7086 uint16_t insn16 = 0;
7088 unsigned long mach = bfd_get_mach (abfd);
7090 /* Decode 32-bit instruction. */
7091 if (insn & 0x80000000)
7093 /* Not 32-bit insn. */
7097 op6 = N32_OP6 (insn);
7099 /* Convert it to 16-bit instruction. */
7103 if (IS_WITHIN_S (N32_IMM20S (insn), 5))
7105 insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn));
7106 insn_type = NDS32_INSN_MOVI55;
7108 else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16
7109 && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn))
7111 insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn),
7112 N32_IMM20S (insn) - 16);
7113 insn_type = NDS32_INSN_MOVPI45;
7118 if (N32_IMM15S (insn) == 0)
7120 /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp',
7121 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7123 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7125 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7126 insn_type = NDS32_INSN_MOV55;
7129 else if (N32_IMM15S (insn) > 0)
7131 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8)
7133 insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn),
7135 insn_type = NDS32_INSN_ADDI333;
7137 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7138 && N32_IMM15S (insn) < 32)
7140 insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn));
7141 insn_type = NDS32_INSN_ADDI45;
7143 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7144 && N32_RT5 (insn) == N32_RA5 (insn)
7145 && N32_IMM15S (insn) < 512)
7147 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7148 insn_type = NDS32_INSN_ADDI10_SP;
7150 else if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7151 && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256
7152 && (N32_IMM15S (insn) % 4 == 0))
7154 insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn),
7155 N32_IMM15S (insn) >> 2);
7156 insn_type = NDS32_INSN_ADDRI36_SP;
7162 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8)
7164 insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn),
7165 0 - N32_IMM15S (insn));
7166 insn_type = NDS32_INSN_SUBI333;
7168 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7169 && N32_IMM15S (insn) > -32)
7171 insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn),
7172 0 - N32_IMM15S (insn));
7173 insn_type = NDS32_INSN_SUBI45;
7175 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7176 && N32_RT5 (insn) == N32_RA5 (insn)
7177 && N32_IMM15S (insn) >= -512)
7179 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7180 insn_type = NDS32_INSN_ADDI10_SP;
7186 if (N32_IMM15S (insn) == 0)
7188 /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp',
7189 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7191 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7193 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7194 insn_type = NDS32_INSN_MOV55;
7200 if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7201 && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0)
7203 insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn));
7204 insn_type = NDS32_INSN_NEG33;
7209 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7211 if (N32_IMM15U (insn) == 1)
7213 insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn));
7214 insn_type = NDS32_INSN_XLSB33;
7216 else if (N32_IMM15U (insn) == 0x7ff)
7218 insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn));
7219 insn_type = NDS32_INSN_X11B33;
7221 else if (N32_IMM15U (insn) == 0xff)
7223 insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn));
7224 insn_type = NDS32_INSN_ZEB33;
7226 else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn)
7227 && N32_IMM15U (insn) < 256)
7229 int imm15u = N32_IMM15U (insn);
7231 if (__builtin_popcount (imm15u) == 1)
7234 int imm3u = __builtin_ctz (imm15u);
7236 insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u);
7237 insn_type = NDS32_INSN_BMSKI33;
7239 else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1)
7242 int imm3u = __builtin_ctz (imm15u + 1) - 1;
7244 insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u);
7245 insn_type = NDS32_INSN_FEXTI33;
7252 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7253 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7255 insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn));
7256 insn_type = NDS32_INSN_SLTI45;
7261 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7262 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7264 insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn));
7265 insn_type = NDS32_INSN_SLTSI45;
7270 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7272 insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn));
7273 insn_type = NDS32_INSN_LWI450;
7275 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7276 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7278 insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn),
7280 insn_type = NDS32_INSN_LWI333;
7282 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7283 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7285 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7286 insn_type = NDS32_INSN_LWI37;
7288 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7289 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7291 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn));
7292 insn_type = NDS32_INSN_LWI37_SP;
7294 else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8
7295 && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0)
7297 insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn),
7298 N32_IMM15S (insn) + 32);
7299 insn_type = NDS32_INSN_LWI45_FE;
7304 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7306 insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn));
7307 insn_type = NDS32_INSN_SWI450;
7309 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7310 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7312 insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn),
7314 insn_type = NDS32_INSN_SWI333;
7316 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7317 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7319 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7320 insn_type = NDS32_INSN_SWI37;
7322 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7323 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7325 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn));
7326 insn_type = NDS32_INSN_SWI37_SP;
7330 case N32_OP6_LWI_BI:
7331 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7332 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7334 insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7336 insn_type = NDS32_INSN_LWI333_BI;
7340 case N32_OP6_SWI_BI:
7341 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7342 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7344 insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7346 insn_type = NDS32_INSN_SWI333_BI;
7351 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7352 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7354 insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn),
7356 insn_type = NDS32_INSN_LHI333;
7361 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7362 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7364 insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn),
7366 insn_type = NDS32_INSN_SHI333;
7371 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7372 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7374 insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn),
7376 insn_type = NDS32_INSN_LBI333;
7381 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7382 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7384 insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn),
7386 insn_type = NDS32_INSN_SBI333;
7391 return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type);
7394 return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type);
7397 if (!IS_WITHIN_S (N32_IMM14S (insn), 8))
7400 if ((insn & __BIT (14)) == 0)
7403 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7404 && N32_RT5 (insn) != REG_R5)
7405 insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn));
7406 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7407 && N32_RA5 (insn) != REG_R5)
7408 insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn));
7409 insn_type = NDS32_INSN_BEQS38;
7415 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7416 && N32_RT5 (insn) != REG_R5)
7417 insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn));
7418 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7419 && N32_RA5 (insn) != REG_R5)
7420 insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn));
7421 insn_type = NDS32_INSN_BNES38;
7427 switch (N32_BR2_SUB (insn))
7430 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7432 insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn));
7433 insn_type = NDS32_INSN_BEQZ38;
7435 else if (N32_RT5 (insn) == REG_R15
7436 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7438 insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn));
7439 insn_type = NDS32_INSN_BEQZS8;
7444 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7446 insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn));
7447 insn_type = NDS32_INSN_BNEZ38;
7449 else if (N32_RT5 (insn) == REG_R15
7450 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7452 insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn));
7453 insn_type = NDS32_INSN_BNEZS8;
7457 case N32_BR2_IFCALL:
7458 if (IS_WITHIN_U (N32_IMM16S (insn), 9))
7460 insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn));
7461 insn_type = NDS32_INSN_IFCALL9;
7468 if ((insn & __BIT (24)) == 0)
7471 if (IS_WITHIN_S (N32_IMM24S (insn), 8))
7473 insn16 = N16_TYPE8 (J8, N32_IMM24S (insn));
7474 insn_type = NDS32_INSN_J8;
7480 if (__GF (insn, 8, 2) != 0)
7483 switch (N32_IMMU (insn, 5))
7486 if (N32_JREG_HINT (insn) == 0)
7489 insn16 = N16_TYPE5 (JR5, N32_RB5 (insn));
7490 insn_type = NDS32_INSN_JR5;
7492 else if (N32_JREG_HINT (insn) == 1)
7495 insn16 = N16_TYPE5 (RET5, N32_RB5 (insn));
7496 insn_type = NDS32_INSN_RET5;
7498 else if (N32_JREG_HINT (insn) == 3)
7500 /* ifret = mov55 $sp, $sp */
7501 insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP);
7502 insn_type = NDS32_INSN_IFRET;
7507 /* It's convertible when return rt5 is $lp and address
7508 translation is kept. */
7509 if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0)
7511 insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn));
7512 insn_type = NDS32_INSN_JRAL5;
7519 if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32)
7521 /* For v3, swid above 31 are used for ex9.it. */
7522 insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn));
7523 insn_type = NDS32_INSN_BREAK16;
7528 /* This instruction has no 16-bit variant. */
7533 /* Bit-15 of insn16 should be set for a valid instruction. */
7534 if ((insn16 & 0x8000) == 0)
7540 *pinsn_type = insn_type;
7545 special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16,
7546 Elf_Internal_Rela *reloc)
7548 uint16_t insn16 = 0;
7550 if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0
7551 || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16))
7554 if (!N32_IS_RT3 (insn))
7557 switch (N32_OP6 (insn))
7560 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7561 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7564 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7565 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7568 if (!IS_WITHIN_U (N32_IMM17S (insn), 7))
7571 if (__GF (insn, 17, 3) == 6)
7572 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn));
7573 else if (__GF (insn, 17, 3) == 7)
7574 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn));
7578 if ((insn16 & 0x8000) == 0)
7585 /* Convert a 16-bit instruction to 32-bit one.
7586 INSN16 it the input and PINSN it the point to output.
7587 Return non-zero on successful. Otherwise 0 is returned. */
7590 nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn)
7592 uint32_t insn = 0xffffffff;
7593 unsigned long mach = bfd_get_mach (abfd);
7595 /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */
7597 switch (__GF (insn16, 9, 6))
7599 case 0x4: /* add45 */
7600 insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16),
7603 case 0x5: /* sub45 */
7604 insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16),
7607 case 0x6: /* addi45 */
7608 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7609 N16_IMM5U (insn16));
7611 case 0x7: /* subi45 */
7612 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7613 -N16_IMM5U (insn16));
7615 case 0x8: /* srai45 */
7616 insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16),
7617 N16_IMM5U (insn16));
7619 case 0x9: /* srli45 */
7620 insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16),
7621 N16_IMM5U (insn16));
7623 case 0xa: /* slli333 */
7624 insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16),
7625 N16_IMM3U (insn16));
7627 case 0xc: /* add333 */
7628 insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16),
7631 case 0xd: /* sub333 */
7632 insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16),
7635 case 0xe: /* addi333 */
7636 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7637 N16_IMM3U (insn16));
7639 case 0xf: /* subi333 */
7640 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7641 -N16_IMM3U (insn16));
7643 case 0x10: /* lwi333 */
7644 insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16),
7645 N16_IMM3U (insn16));
7647 case 0x12: /* lhi333 */
7648 insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16),
7649 N16_IMM3U (insn16));
7651 case 0x13: /* lbi333 */
7652 insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16),
7653 N16_IMM3U (insn16));
7655 case 0x11: /* lwi333.bi */
7656 insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7657 N16_IMM3U (insn16));
7659 case 0x14: /* swi333 */
7660 insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16),
7661 N16_IMM3U (insn16));
7663 case 0x16: /* shi333 */
7664 insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16),
7665 N16_IMM3U (insn16));
7667 case 0x17: /* sbi333 */
7668 insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16),
7669 N16_IMM3U (insn16));
7671 case 0x15: /* swi333.bi */
7672 insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7673 N16_IMM3U (insn16));
7675 case 0x18: /* addri36.sp */
7676 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP,
7677 N16_IMM6U (insn16) << 2);
7679 case 0x19: /* lwi45.fe */
7680 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8,
7681 (N16_IMM5U (insn16) - 32));
7683 case 0x1a: /* lwi450 */
7684 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7686 case 0x1b: /* swi450 */
7687 insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7690 /* These are r15 implied instructions. */
7691 case 0x30: /* slts45 */
7692 insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7694 case 0x31: /* slt45 */
7695 insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7697 case 0x32: /* sltsi45 */
7698 insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7700 case 0x33: /* slti45 */
7701 insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7703 case 0x34: /* beqzs8, bnezs8 */
7704 if (insn16 & __BIT (8))
7705 insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16));
7707 insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16));
7710 case 0x35: /* break16, ex9.it */
7711 /* Only consider range of v3 break16. */
7712 insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK);
7715 case 0x3c: /* ifcall9 */
7716 insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16));
7718 case 0x3d: /* movpi45 */
7719 insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16);
7722 case 0x3f: /* MISC33 */
7723 switch (insn16 & 0x7)
7726 insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7729 insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16),
7733 insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16),
7737 insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16),
7741 insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16),
7745 insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16),
7752 switch (insn16 & 0x7)
7755 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff);
7758 insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7761 insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7764 insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7766 case 4: /* xlsb33 */
7767 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1);
7769 case 5: /* x11b33 */
7770 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff);
7772 case 6: /* bmski33 */
7773 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7774 1 << __GF (insn16, 3, 3));
7776 case 7: /* fexti33 */
7777 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7778 (1 << (__GF (insn16, 3, 3) + 1)) - 1);
7784 switch (__GF (insn16, 10, 5))
7786 case 0x0: /* mov55 or ifret16 */
7787 if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP
7788 && N16_RT5 (insn16) == N16_RA5 (insn16))
7789 insn = N32_JREG (JR, 0, 0, 0, 3);
7791 insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0);
7793 case 0x1: /* movi55 */
7794 insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16));
7796 case 0x1b: /* addi10s (V2) */
7797 insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16));
7801 switch (__GF (insn16, 11, 4))
7803 case 0x7: /* lwi37.fp/swi37.fp */
7804 if (insn16 & __BIT (7)) /* swi37.fp */
7805 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7807 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7809 case 0x8: /* beqz38 */
7810 insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7812 case 0x9: /* bnez38 */
7813 insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7815 case 0xa: /* beqs38/j8, implied r5 */
7816 if (N16_RT38 (insn16) == 5)
7817 insn = N32_JI (J, N16_IMM8S (insn16));
7819 insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7821 case 0xb: /* bnes38 and others */
7822 if (N16_RT38 (insn16) == 5)
7824 switch (__GF (insn16, 5, 3))
7827 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0);
7830 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1);
7833 insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0);
7835 case 2: /* ex9.it imm5 */
7836 /* ex9.it had no 32-bit variantl. */
7838 case 5: /* add5.pc */
7839 /* add5.pc had no 32-bit variantl. */
7844 insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7846 case 0xe: /* lwi37/swi37 */
7847 if (insn16 & (1 << 7)) /* swi37.sp */
7848 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7850 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7855 if (insn & 0x80000000)
7864 is_sda_access_insn (unsigned long insn)
7866 switch (N32_OP6 (insn))
7887 static unsigned long
7888 turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn)
7894 case R_NDS32_GOT_LO12:
7895 case R_NDS32_GOTOFF_LO12:
7896 case R_NDS32_PLTREL_LO12:
7897 case R_NDS32_PLT_GOTREL_LO12:
7898 case R_NDS32_LO12S0_RELA:
7899 switch (N32_OP6 (insn))
7903 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
7907 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19));
7911 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
7915 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
7920 case R_NDS32_LO12S1_RELA:
7921 switch (N32_OP6 (insn))
7925 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
7929 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18));
7933 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19));
7938 case R_NDS32_LO12S2_RELA:
7939 switch (N32_OP6 (insn))
7943 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
7947 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
7952 case R_NDS32_LO12S2_DP_RELA:
7953 case R_NDS32_LO12S2_SP_RELA:
7954 oinsn = (insn & 0x7ff07000) | (REG_GP << 15);
7964 /* Linker hasn't found the correct merge section for non-section symbol
7965 in relax time, this work is left to the function elf_link_input_bfd().
7966 So for non-section symbol, _bfd_merged_section_offset is also needed
7967 to find the correct symbol address. */
7970 nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym,
7971 asection **psec, Elf_Internal_Rela *rel)
7973 asection *sec = *psec;
7976 relocation = (sec->output_section->vma
7977 + sec->output_offset + sym->st_value);
7978 if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
7980 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7982 _bfd_merged_section_offset (abfd, psec,
7983 elf_section_data (sec)->sec_info,
7984 sym->st_value + rel->r_addend);
7987 _bfd_merged_section_offset (abfd, psec,
7988 elf_section_data (sec)->sec_info,
7989 sym->st_value) + rel->r_addend;
7993 /* If we have changed the section, and our original section is
7994 marked with SEC_EXCLUDE, it means that the original
7995 SEC_MERGE section has been completely subsumed in some
7996 other SEC_MERGE section. In this case, we need to leave
7997 some info around for --emit-relocs. */
7998 if ((sec->flags & SEC_EXCLUDE) != 0)
7999 sec->kept_section = *psec;
8002 rel->r_addend -= relocation;
8003 rel->r_addend += sec->output_section->vma + sec->output_offset;
8009 calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel,
8010 Elf_Internal_Sym *isymbuf,
8011 Elf_Internal_Shdr *symtab_hdr)
8013 bfd_signed_vma foff;
8014 bfd_vma symval, addend;
8015 Elf_Internal_Rela irel_fn;
8016 Elf_Internal_Sym *isym;
8019 /* Get the value of the symbol referred to by the reloc. */
8020 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
8022 /* A local symbol. */
8023 isym = isymbuf + ELF32_R_SYM (irel->r_info);
8025 if (isym->st_shndx == SHN_UNDEF)
8026 sym_sec = bfd_und_section_ptr;
8027 else if (isym->st_shndx == SHN_ABS)
8028 sym_sec = bfd_abs_section_ptr;
8029 else if (isym->st_shndx == SHN_COMMON)
8030 sym_sec = bfd_com_section_ptr;
8032 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
8033 memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela));
8034 symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn);
8035 addend = irel_fn.r_addend;
8040 struct elf_link_hash_entry *h;
8042 /* An external symbol. */
8043 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8044 h = elf_sym_hashes (abfd)[indx];
8045 BFD_ASSERT (h != NULL);
8047 while (h->root.type == bfd_link_hash_indirect
8048 || h->root.type == bfd_link_hash_warning)
8049 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8051 if (h->root.type != bfd_link_hash_defined
8052 && h->root.type != bfd_link_hash_defweak)
8053 /* This appears to be a reference to an undefined
8054 symbol. Just ignore it--it will be caught by the
8055 regular reloc processing. */
8058 if (h->root.u.def.section->flags & SEC_MERGE)
8060 sym_sec = h->root.u.def.section;
8061 symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data
8062 (sym_sec)->sec_info, h->root.u.def.value);
8063 symval = symval + sym_sec->output_section->vma
8064 + sym_sec->output_offset;
8067 symval = (h->root.u.def.value
8068 + h->root.u.def.section->output_section->vma
8069 + h->root.u.def.section->output_offset);
8070 addend = irel->r_addend;
8073 foff = symval + addend;
8079 calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info,
8080 Elf_Internal_Rela *irel,
8081 Elf_Internal_Shdr *symtab_hdr)
8084 bfd_vma *local_got_offsets;
8085 /* Get the value of the symbol referred to by the reloc. */
8086 struct elf_link_hash_entry *h;
8087 struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info);
8089 /* An external symbol. */
8090 symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8091 h = elf_sym_hashes (abfd)[symndx];
8092 while (h->root.type == bfd_link_hash_indirect
8093 || h->root.type == bfd_link_hash_warning)
8094 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8098 BFD_ASSERT (h != NULL);
8099 return htab->sgot->output_section->vma + htab->sgot->output_offset
8104 local_got_offsets = elf_local_got_offsets (abfd);
8105 BFD_ASSERT (local_got_offsets != NULL);
8106 return htab->sgot->output_section->vma + htab->sgot->output_offset
8107 + local_got_offsets[ELF32_R_SYM (irel->r_info)];
8110 /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */
8111 /* The check of h->root.type is passed. */
8115 is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED,
8116 asection *sec, Elf_Internal_Rela *rel)
8119 unsigned short insn16;
8121 if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG))
8123 contents = elf_section_data (sec)->this_hdr.contents;
8124 insn16 = bfd_getb16 (contents + rel->r_offset);
8125 if (insn16 == NDS32_NOP16)
8130 /* It checks whether the instruction could be converted to
8131 16-bit form and returns the converted one.
8133 `internal_relocs' is supposed to be sorted. */
8136 is_convert_32_to_16 (bfd *abfd, asection *sec,
8137 Elf_Internal_Rela *reloc,
8138 Elf_Internal_Rela *internal_relocs,
8139 Elf_Internal_Rela *irelend,
8142 #define NORMAL_32_TO_16 (1 << 0)
8143 #define SPECIAL_32_TO_16 (1 << 1)
8144 bfd_byte *contents = NULL;
8148 Elf_Internal_Rela *pc_rel;
8149 int pic_ext_target = 0;
8150 Elf_Internal_Shdr *symtab_hdr;
8151 Elf_Internal_Sym *isymbuf = NULL;
8155 if (reloc->r_offset + 4 > sec->size)
8158 offset = reloc->r_offset;
8160 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
8162 insn = bfd_getb32 (contents + offset);
8164 if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL))
8165 convert_type = NORMAL_32_TO_16;
8166 else if (special_convert_32_to_16 (insn, insn16, reloc))
8167 convert_type = SPECIAL_32_TO_16;
8171 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8172 if (!nds32_get_local_syms (abfd, sec, &isymbuf))
8175 /* Find the first relocation of the same relocation-type,
8176 so we iteratie them forward. */
8178 while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset)
8181 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8183 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8184 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8185 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA
8186 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8188 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
8190 if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1
8195 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8197 /* movi => movi55 */
8198 mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf,
8200 /* mem_addr is unsigned, but the value should
8201 be between [-16, 15]. */
8202 if ((mem_addr + 0x10) >> 5)
8206 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20)
8207 || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12))
8209 /* It never happen movi to movi55 for R_NDS32_TLS_LE_20,
8210 because it can be relaxed to addi for TLS_LE_ADD. */
8213 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8214 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8215 && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG)
8216 && convert_type == SPECIAL_32_TO_16)
8219 We've selected a best fp-base for this access, so we can
8220 always resolve it anyway. Do nothing. */
8223 else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE
8224 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT))
8225 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY)
8226 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16))
8227 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE)
8228 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA)))
8230 /* Prevent unresolved addi instruction translate
8231 to addi45 or addi333. */
8234 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8236 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
8238 if (off >= ACCURATE_U9BIT_S1 || off <= 0)
8248 nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents,
8249 Elf_Internal_Rela *reloc,
8250 Elf_Internal_Rela *internal_relocs,
8251 Elf_Internal_Rela *irelend,
8252 unsigned short insn16)
8254 Elf_Internal_Rela *pc_rel;
8257 offset = reloc->r_offset;
8258 bfd_putb16 (insn16, contents + offset);
8259 /* Find the first relocation of the same relocation-type,
8260 so we iteratie them forward. */
8262 while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset)
8265 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8267 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8268 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8269 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA)
8272 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA);
8274 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8276 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL);
8277 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8279 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA);
8280 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8281 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8283 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA);
8284 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8286 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA);
8290 /* Find a relocation of type specified by `reloc_type'
8291 of the same r_offset with reloc.
8292 If not found, return irelend.
8294 Assuming relocations are sorted by r_offset,
8295 we find the relocation from `reloc' backward untill relocs,
8296 or find it from `reloc' forward untill irelend. */
8298 static Elf_Internal_Rela *
8299 find_relocs_at_address (Elf_Internal_Rela *reloc,
8300 Elf_Internal_Rela *relocs,
8301 Elf_Internal_Rela *irelend,
8302 enum elf_nds32_reloc_type reloc_type)
8304 Elf_Internal_Rela *rel_t;
8306 /* Find backward. */
8308 rel_t >= relocs && rel_t->r_offset == reloc->r_offset;
8310 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8313 /* We didn't find it backward. Try find it forward. */
8315 rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8317 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8323 /* Find a relocation of specified type and offset.
8324 `reloc' is just a refence point to find a relocation at specified offset.
8325 If not found, return irelend.
8327 Assuming relocations are sorted by r_offset,
8328 we find the relocation from `reloc' backward untill relocs,
8329 or find it from `reloc' forward untill irelend. */
8331 static Elf_Internal_Rela *
8332 find_relocs_at_address_addr (Elf_Internal_Rela *reloc,
8333 Elf_Internal_Rela *relocs,
8334 Elf_Internal_Rela *irelend,
8335 enum elf_nds32_reloc_type reloc_type,
8338 Elf_Internal_Rela *rel_t = NULL;
8340 /* First, we try to find a relocation of offset `offset_p',
8341 and then we use find_relocs_at_address to find specific type. */
8343 if (reloc->r_offset > offset_p)
8345 /* Find backward. */
8347 rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--)
8350 else if (reloc->r_offset < offset_p)
8354 rel_t < irelend && rel_t->r_offset < offset_p; rel_t++)
8361 if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p)
8364 return find_relocs_at_address (rel_t, relocs, irelend, reloc_type);
8368 nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc,
8369 Elf_Internal_Rela *internal_relocs,
8370 Elf_Internal_Rela *irelend,
8371 unsigned char reloc_type)
8373 Elf_Internal_Rela *rel_t;
8376 rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset;
8378 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8380 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8381 && rel_t->r_addend == reloc->r_addend)
8386 for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8388 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8390 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8391 && rel_t->r_addend == reloc->r_addend)
8399 typedef struct nds32_elf_blank nds32_elf_blank_t;
8400 struct nds32_elf_blank
8402 /* Where the blank begins. */
8404 /* The size of the blank. */
8406 /* The accumulative size before this blank. */
8408 nds32_elf_blank_t *next;
8409 nds32_elf_blank_t *prev;
8412 static nds32_elf_blank_t *blank_free_list = NULL;
8414 static nds32_elf_blank_t *
8415 create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p)
8417 nds32_elf_blank_t *blank_t;
8419 if (blank_free_list)
8421 blank_t = blank_free_list;
8422 blank_free_list = blank_free_list->next;
8425 blank_t = bfd_malloc (sizeof (nds32_elf_blank_t));
8427 if (blank_t == NULL)
8430 blank_t->offset = offset_p;
8431 blank_t->size = size_p;
8432 blank_t->total_size = 0;
8433 blank_t->next = NULL;
8434 blank_t->prev = NULL;
8440 remove_nds32_elf_blank (nds32_elf_blank_t *blank_p)
8442 if (blank_free_list)
8444 blank_free_list->prev = blank_p;
8445 blank_p->next = blank_free_list;
8448 blank_p->next = NULL;
8450 blank_p->prev = NULL;
8451 blank_free_list = blank_p;
8455 clean_nds32_elf_blank (void)
8457 nds32_elf_blank_t *blank_t;
8459 while (blank_free_list)
8461 blank_t = blank_free_list;
8462 blank_free_list = blank_free_list->next;
8467 static nds32_elf_blank_t *
8468 search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr)
8470 nds32_elf_blank_t *blank_t;
8476 while (blank_t && addr < blank_t->offset)
8477 blank_t = blank_t->prev;
8478 while (blank_t && blank_t->next && addr >= blank_t->next->offset)
8479 blank_t = blank_t->next;
8485 get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8488 nds32_elf_blank_t *blank_t;
8490 blank_t = search_nds32_elf_blank (*blank_p, addr);
8497 if (addr < blank_t->offset + blank_t->size)
8498 return blank_t->total_size + (addr - blank_t->offset);
8500 return blank_t->total_size + blank_t->size;
8504 insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len)
8506 nds32_elf_blank_t *blank_t, *blank_t2;
8510 *blank_p = create_nds32_elf_blank (addr, len);
8511 return *blank_p ? TRUE : FALSE;
8514 blank_t = search_nds32_elf_blank (*blank_p, addr);
8516 if (blank_t == NULL)
8518 blank_t = create_nds32_elf_blank (addr, len);
8521 while ((*blank_p)->prev != NULL)
8522 *blank_p = (*blank_p)->prev;
8523 blank_t->next = *blank_p;
8524 (*blank_p)->prev = blank_t;
8525 (*blank_p) = blank_t;
8529 if (addr < blank_t->offset + blank_t->size)
8531 if (addr > blank_t->offset + blank_t->size)
8532 blank_t->size = addr - blank_t->offset;
8536 blank_t2 = create_nds32_elf_blank (addr, len);
8541 blank_t->next->prev = blank_t2;
8542 blank_t2->next = blank_t->next;
8544 blank_t2->prev = blank_t;
8545 blank_t->next = blank_t2;
8546 *blank_p = blank_t2;
8553 insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8556 nds32_elf_blank_t *blank_t;
8558 if (!insert_nds32_elf_blank (blank_p, addr, len))
8565 blank_t->total_size = 0;
8566 blank_t = blank_t->next;
8571 blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size;
8572 blank_t = blank_t->next;
8579 calc_nds32_blank_total (nds32_elf_blank_t *blank_p)
8581 nds32_elf_blank_t *blank_t;
8582 bfd_vma total_size = 0;
8588 while (blank_t->prev)
8589 blank_t = blank_t->prev;
8592 blank_t->total_size = total_size;
8593 total_size += blank_t->size;
8594 blank_t = blank_t->next;
8599 nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec,
8600 nds32_elf_blank_t *blank_p)
8602 Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */
8603 Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */
8604 Elf_Internal_Sym *isymend; /* Symbol entry iterator. */
8605 unsigned int sec_shndx; /* The section the be relaxed. */
8606 bfd_byte *contents; /* Contents data of iterating section. */
8607 Elf_Internal_Rela *internal_relocs;
8608 Elf_Internal_Rela *irel;
8609 Elf_Internal_Rela *irelend;
8610 struct elf_link_hash_entry **sym_hashes;
8611 struct elf_link_hash_entry **end_hashes;
8612 unsigned int symcount;
8614 nds32_elf_blank_t *blank_t;
8615 nds32_elf_blank_t *blank_t2;
8616 nds32_elf_blank_t *blank_head;
8618 blank_head = blank_t = blank_p;
8619 while (blank_head->prev != NULL)
8620 blank_head = blank_head->prev;
8621 while (blank_t->next != NULL)
8622 blank_t = blank_t->next;
8624 if (blank_t->offset + blank_t->size <= sec->size)
8626 blank_t->next = create_nds32_elf_blank (sec->size + 4, 0);
8627 blank_t->next->prev = blank_t;
8629 if (blank_head->offset > 0)
8631 blank_head->prev = create_nds32_elf_blank (0, 0);
8632 blank_head->prev->next = blank_head;
8633 blank_head = blank_head->prev;
8636 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
8638 /* The deletion must stop at the next ALIGN reloc for an alignment
8639 power larger than the number of bytes we are deleting. */
8641 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8642 if (!nds32_get_local_syms (abfd, sec, &isym))
8647 isym = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8648 symtab_hdr->sh_info, 0, NULL, NULL, NULL);
8649 symtab_hdr->contents = (bfd_byte *) isym;
8652 if (isym == NULL || symtab_hdr->sh_info == 0)
8655 blank_t = blank_head;
8656 calc_nds32_blank_total (blank_head);
8658 for (sect = abfd->sections; sect != NULL; sect = sect->next)
8660 /* Adjust all the relocs. */
8662 /* Relocations MUST be kept in memory, because relaxation adjust them. */
8663 internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL,
8664 TRUE /* keep_memory */);
8665 irelend = internal_relocs + sect->reloc_count;
8667 blank_t = blank_head;
8668 blank_t2 = blank_head;
8670 if (!(sect->flags & SEC_RELOC))
8673 nds32_get_section_contents (abfd, sect, &contents, TRUE);
8675 for (irel = internal_relocs; irel < irelend; irel++)
8679 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8
8680 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32
8681 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8683 unsigned long val = 0;
8685 long before, between;
8688 switch (ELF32_R_TYPE (irel->r_info))
8691 offset = bfd_get_8 (abfd, contents + irel->r_offset);
8693 case R_NDS32_DIFF16:
8694 offset = bfd_get_16 (abfd, contents + irel->r_offset);
8696 case R_NDS32_DIFF32:
8697 val = bfd_get_32 (abfd, contents + irel->r_offset);
8698 /* Get the signed bit and mask for the high part. The
8699 gcc will alarm when right shift 32-bit since the
8700 type size of long may be 32-bit. */
8701 mask = 0 - (val >> 31);
8703 offset = (val | (mask - 0xffffffff));
8712 0 |encoded in location|
8713 |------------|-------------------|---------
8715 -- before ---| *****************
8716 --------------------- between ---|
8718 We only care how much data are relax between DIFF,
8721 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8722 between = get_nds32_elf_blank_total (&blank_t,
8723 irel->r_addend + offset, 0);
8724 if (between == before)
8725 goto done_adjust_diff;
8727 switch (ELF32_R_TYPE (irel->r_info))
8730 bfd_put_8 (abfd, offset - (between - before),
8731 contents + irel->r_offset);
8733 case R_NDS32_DIFF16:
8734 bfd_put_16 (abfd, offset - (between - before),
8735 contents + irel->r_offset);
8737 case R_NDS32_DIFF32:
8738 bfd_put_32 (abfd, offset - (between - before),
8739 contents + irel->r_offset);
8743 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128
8744 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8747 unsigned int len = 0;
8748 unsigned long before, between;
8751 val = read_unsigned_leb128 (abfd, contents + irel->r_offset,
8754 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8755 between = get_nds32_elf_blank_total (&blank_t,
8756 irel->r_addend + val, 0);
8757 if (between == before)
8758 goto done_adjust_diff;
8760 p = contents + irel->r_offset;
8762 memset (p, 0x80, len);
8764 p = write_uleb128 (p, val - (between - before)) - 1;
8772 raddr = irel->r_offset;
8773 irel->r_offset -= get_nds32_elf_blank_total (&blank_t2,
8776 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
8778 if (blank_t2 && blank_t2->next
8779 && (blank_t2->offset > raddr
8780 || blank_t2->next->offset <= raddr))
8782 (_("%B: %s\n"), abfd,
8783 "Error: search_nds32_elf_blank reports wrong node");
8785 /* Mark reloc in deleted portion as NONE.
8786 For some relocs like R_NDS32_LABEL that doesn't modify the
8787 content in the section. R_NDS32_LABEL doesn't belong to the
8788 instruction in the section, so we should preserve it. */
8789 if (raddr >= blank_t2->offset
8790 && raddr < blank_t2->offset + blank_t2->size
8791 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL
8792 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN
8793 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
8794 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
8795 && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND
8796 && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND)
8798 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
8804 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE
8805 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
8806 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
8809 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info
8810 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx
8811 && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION)
8813 if (irel->r_addend <= sec->size)
8815 get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1);
8820 /* Adjust the local symbols defined in this section. */
8821 blank_t = blank_head;
8822 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
8824 if (isym->st_shndx == sec_shndx)
8826 if (isym->st_value <= sec->size)
8829 bfd_vma orig_addr = isym->st_value;
8831 ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1);
8832 isym->st_value -= ahead;
8834 /* Adjust function size. */
8835 if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC
8836 && isym->st_size > 0)
8838 get_nds32_elf_blank_total
8839 (&blank_t, orig_addr + isym->st_size, 0) - ahead;
8844 /* Now adjust the global symbols defined in this section. */
8845 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
8846 - symtab_hdr->sh_info);
8847 sym_hashes = elf_sym_hashes (abfd);
8848 end_hashes = sym_hashes + symcount;
8849 blank_t = blank_head;
8850 for (; sym_hashes < end_hashes; sym_hashes++)
8852 struct elf_link_hash_entry *sym_hash = *sym_hashes;
8854 if ((sym_hash->root.type == bfd_link_hash_defined
8855 || sym_hash->root.type == bfd_link_hash_defweak)
8856 && sym_hash->root.u.def.section == sec)
8858 if (sym_hash->root.u.def.value <= sec->size)
8861 bfd_vma orig_addr = sym_hash->root.u.def.value;
8863 ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1);
8864 sym_hash->root.u.def.value -= ahead;
8866 /* Adjust function size. */
8867 if (sym_hash->type == STT_FUNC)
8869 get_nds32_elf_blank_total
8870 (&blank_t, orig_addr + sym_hash->size, 0) - ahead;
8876 contents = elf_section_data (sec)->this_hdr.contents;
8877 blank_t = blank_head;
8878 while (blank_t->next)
8880 /* Actually delete the bytes. */
8882 /* If current blank is the last blank overlap with current section,
8883 go to finish process. */
8884 if (sec->size <= (blank_t->next->offset))
8887 memmove (contents + blank_t->offset - blank_t->total_size,
8888 contents + blank_t->offset + blank_t->size,
8889 blank_t->next->offset - (blank_t->offset + blank_t->size));
8891 blank_t = blank_t->next;
8894 if (sec->size > (blank_t->offset + blank_t->size))
8896 /* There are remaining code between blank and section boundary.
8897 Move the remaining code to appropriate location. */
8898 memmove (contents + blank_t->offset - blank_t->total_size,
8899 contents + blank_t->offset + blank_t->size,
8900 sec->size - (blank_t->offset + blank_t->size));
8901 sec->size -= blank_t->total_size + blank_t->size;
8904 /* This blank is not entirely included in the section,
8905 reduce the section size by only part of the blank size. */
8906 sec->size -= blank_t->total_size + (sec->size - blank_t->offset);
8910 blank_t = blank_head;
8911 blank_head = blank_head->next;
8912 remove_nds32_elf_blank (blank_t);
8918 /* Get the contents of a section. */
8921 nds32_get_section_contents (bfd *abfd, asection *sec,
8922 bfd_byte **contents_p, bfd_boolean cache)
8924 /* Get the section contents. */
8925 if (elf_section_data (sec)->this_hdr.contents != NULL)
8926 *contents_p = elf_section_data (sec)->this_hdr.contents;
8929 if (!bfd_malloc_and_get_section (abfd, sec, contents_p))
8932 elf_section_data (sec)->this_hdr.contents = *contents_p;
8938 /* Get the contents of the internal symbol of abfd. */
8941 nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED,
8942 Elf_Internal_Sym **isymbuf_p)
8944 Elf_Internal_Shdr *symtab_hdr;
8945 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8947 /* Read this BFD's local symbols if we haven't done so already. */
8948 if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0)
8950 *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents;
8951 if (*isymbuf_p == NULL)
8953 *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8954 symtab_hdr->sh_info, 0,
8956 if (*isymbuf_p == NULL)
8960 symtab_hdr->contents = (bfd_byte *) (*isymbuf_p);
8965 /* Range of small data. */
8966 static bfd_vma sdata_range[2][2];
8967 static bfd_vma const sdata_init_range[2] =
8968 { ACCURATE_12BIT_S1, ACCURATE_19BIT };
8971 nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED,
8972 bfd_byte *contents, bfd_vma addr)
8974 unsigned long insn = bfd_getb32 (contents + addr);
8976 if (insn & 0x80000000)
8982 /* Set the gp relax range. We have to measure the safe range
8983 to do gp relaxation. */
8986 relax_range_measurement (bfd *abfd)
8988 asection *sec_f, *sec_b;
8989 /* For upper bound. */
8990 bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize;
8992 static int decide_relax_range = 0;
8994 int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]);
8996 if (decide_relax_range)
8998 decide_relax_range = 1;
9000 if (sda_rela_sec == NULL)
9002 /* Since there is no data sections, we assume the range is page size. */
9003 for (i = 0; i < range_number; i++)
9005 sdata_range[i][0] = sdata_init_range[i] - 0x1000;
9006 sdata_range[i][1] = sdata_init_range[i] - 0x1000;
9011 /* Get the biggest alignment power after the gp located section. */
9012 sec_f = sda_rela_sec->output_section;
9013 sec_b = sec_f->next;
9015 while (sec_b != NULL)
9017 if ((unsigned)(1 << sec_b->alignment_power) > align)
9018 align = (1 << sec_b->alignment_power);
9019 sec_b = sec_b->next;
9022 /* I guess we can not determine the section before
9023 gp located section, so we assume the align is max page size. */
9024 for (i = 0; i < range_number; i++)
9026 sdata_range[i][1] = sdata_init_range[i] - align;
9027 BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]);
9028 sdata_range[i][0] = sdata_init_range[i] - maxpgsz;
9029 BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]);
9033 /* These are macros used to check flags encoded in r_addend.
9034 They are only used by nds32_elf_relax_section (). */
9035 #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff)
9036 #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000)
9037 #define IS_OPTIMIZE(addend) ((addend) & 0x40000000)
9038 #define IS_16BIT_ON(addend) ((addend) & 0x20000000)
9040 /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */
9043 nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9044 Elf_Internal_Rela *internal_relocs, int *insn_len,
9045 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9046 Elf_Internal_Shdr *symtab_hdr)
9048 /* There are 3 variations for LONGCALL1
9049 case 4-4-2; 16-bit on, optimize off or optimize for space
9050 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9051 ori ta, ta, lo12(symbol) ; LO12S0
9054 case 4-4-4; 16-bit off, optimize don't care
9055 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9056 ori ta, ta, lo12(symbol) ; LO12S0
9059 case 4-4-4; 16-bit on, optimize for speed
9060 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9061 ori ta, ta, lo12(symbol) ; LO12S0
9063 Check code for -mlong-calls output. */
9065 /* Get the reloc for the address from which the register is
9066 being loaded. This reloc will tell us which function is
9067 actually being called. */
9070 int seq_len; /* Original length of instruction sequence. */
9072 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9073 int pic_ext_target = 0;
9074 bfd_signed_vma foff;
9077 irelend = internal_relocs + sec->reloc_count;
9078 seq_len = GET_SEQ_LEN (irel->r_addend);
9079 laddr = irel->r_offset;
9080 *insn_len = seq_len;
9082 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9083 R_NDS32_HI20_RELA, laddr);
9084 lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9085 R_NDS32_LO12S0_ORI_RELA,
9088 if (hi_irelfn == irelend || lo_irelfn == irelend)
9091 ("%B: warning: R_NDS32_LONGCALL1 points to unrecognized"
9092 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9096 /* Get the value of the symbol referred to by the reloc. */
9097 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9100 /* This condition only happened when symbol is undefined. */
9101 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9102 || foff >= CONSERVATIVE_24BIT_S1)
9105 /* Relax to: jal symbol; 25_PCREL */
9106 /* For simplicity of coding, we are going to modify the section
9107 contents, the section relocs, and the BFD symbol table. We
9108 must tell the rest of the code not to free up this
9109 information. It would be possible to instead create a table
9110 of changes which have to be made, as is done in coff-mips.c;
9111 that would be more work, but would require less memory when
9112 the linker is run. */
9114 /* Replace the long call with a jal. */
9115 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9116 R_NDS32_25_PCREL_RELA);
9117 irel->r_addend = hi_irelfn->r_addend;
9119 /* We don't resolve this here but resolve it in relocate_section. */
9121 bfd_putb32 (insn, contents + irel->r_offset);
9124 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9126 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9131 insn16 = NDS32_NOP16;
9132 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9134 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9135 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9141 #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000)
9142 /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */
9145 nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9146 Elf_Internal_Rela *internal_relocs, int *insn_len,
9147 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9148 Elf_Internal_Shdr *symtab_hdr)
9150 /* bltz rt, .L1 ; LONGCALL2
9151 jal symbol ; 25_PCREL
9154 /* Get the reloc for the address from which the register is
9155 being loaded. This reloc will tell us which function is
9156 actually being called. */
9160 Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend;
9161 int pic_ext_target = 0;
9162 bfd_signed_vma foff;
9164 irelend = internal_relocs + sec->reloc_count;
9165 laddr = irel->r_offset;
9167 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9168 R_NDS32_25_PCREL_RELA, laddr + 4);
9170 if (i1_irelfn == irelend)
9173 ("%B: warning: R_NDS32_LONGCALL2 points to unrecognized"
9174 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9178 insn = bfd_getb32 (contents + laddr);
9180 /* Get the value of the symbol referred to by the reloc. */
9181 foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr,
9184 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9185 || foff >= CONSERVATIVE_16BIT_S1)
9188 /* Relax to bgezal rt, label ; 17_PCREL
9189 or bltzal rt, label ; 17_PCREL */
9191 /* Convert to complimentary conditional call. */
9192 insn = CONVERT_CONDITION_CALL (insn);
9194 /* For simplicity of coding, we are going to modify the section
9195 contents, the section relocs, and the BFD symbol table. We
9196 must tell the rest of the code not to free up this
9197 information. It would be possible to instead create a table
9198 of changes which have to be made, as is done in coff-mips.c;
9199 that would be more work, but would require less memory when
9200 the linker is run. */
9202 /* Clean unnessary relocations. */
9204 ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE);
9206 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9207 R_NDS32_17_PCREL_RELA, laddr);
9208 if (cond_irelfn != irelend)
9209 cond_irelfn->r_info =
9210 ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE);
9212 /* Replace the long call with a bgezal. */
9213 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info),
9214 R_NDS32_17_PCREL_RELA);
9215 irel->r_addend = i1_irelfn->r_addend;
9217 bfd_putb32 (insn, contents + irel->r_offset);
9223 /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */
9226 nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9227 Elf_Internal_Rela *internal_relocs, int *insn_len,
9228 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9229 Elf_Internal_Shdr *symtab_hdr)
9231 /* There are 3 variations for LONGCALL3
9232 case 4-4-4-2; 16-bit on, optimize off or optimize for space
9233 bltz rt, $1 ; LONGCALL3
9234 sethi ta, hi20(symbol) ; HI20
9235 ori ta, ta, lo12(symbol) ; LO12S0
9239 case 4-4-4-4; 16-bit off, optimize don't care
9240 bltz rt, $1 ; LONGCALL3
9241 sethi ta, hi20(symbol) ; HI20
9242 ori ta, ta, lo12(symbol) ; LO12S0
9246 case 4-4-4-4; 16-bit on, optimize for speed
9247 bltz rt, $1 ; LONGCALL3
9248 sethi ta, hi20(symbol) ; HI20
9249 ori ta, ta, lo12(symbol) ; LO12S0
9253 /* Get the reloc for the address from which the register is
9254 being loaded. This reloc will tell us which function is
9255 actually being called. */
9258 int seq_len; /* Original length of instruction sequence. */
9260 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9261 int pic_ext_target = 0;
9262 bfd_signed_vma foff;
9265 irelend = internal_relocs + sec->reloc_count;
9266 seq_len = GET_SEQ_LEN (irel->r_addend);
9267 laddr = irel->r_offset;
9268 *insn_len = seq_len;
9271 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9272 R_NDS32_HI20_RELA, laddr + 4);
9274 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9275 R_NDS32_LO12S0_ORI_RELA, laddr + 8);
9277 if (hi_irelfn == irelend || lo_irelfn == irelend)
9280 ("%B: warning: R_NDS32_LONGCALL3 points to unrecognized"
9281 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9285 /* Get the value of the symbol referred to by the reloc. */
9286 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9289 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9290 || foff >= CONSERVATIVE_24BIT_S1)
9293 insn = bfd_getb32 (contents + laddr);
9294 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
9296 /* Relax to bgezal rt, label ; 17_PCREL
9297 or bltzal rt, label ; 17_PCREL */
9299 /* Convert to complimentary conditional call. */
9300 insn = CONVERT_CONDITION_CALL (insn);
9301 bfd_putb32 (insn, contents + irel->r_offset);
9305 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9307 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9309 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9312 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9313 R_NDS32_17_PCREL_RELA, laddr);
9314 if (cond_irelfn != irelend)
9316 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9317 R_NDS32_17_PCREL_RELA);
9318 cond_irelfn->r_addend = hi_irelfn->r_addend;
9323 insn16 = NDS32_NOP16;
9324 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9325 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9327 hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9331 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
9333 /* Relax to the following instruction sequence
9334 bltz rt, $1 ; LONGCALL2
9335 jal symbol ; 25_PCREL
9339 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9341 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9342 R_NDS32_25_PCREL_RELA);
9344 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2);
9347 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9351 insn16 = NDS32_NOP16;
9352 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9354 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9355 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9362 /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */
9365 nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9366 Elf_Internal_Rela *internal_relocs, int *insn_len,
9367 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9368 Elf_Internal_Shdr *symtab_hdr)
9370 /* There are 3 variations for LONGJUMP1
9371 case 4-4-2; 16-bit bit on, optimize off or optimize for space
9372 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9373 ori ta, ta, lo12(symbol) ; LO12S0
9376 case 4-4-4; 16-bit off, optimize don't care
9377 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9378 ori ta, ta, lo12(symbol) ; LO12S0
9381 case 4-4-4; 16-bit on, optimize for speed
9382 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9383 ori ta, ta, lo12(symbol) ; LO12S0
9386 /* Get the reloc for the address from which the register is
9387 being loaded. This reloc will tell us which function is
9388 actually being called. */
9391 int seq_len; /* Original length of instruction sequence. */
9392 int insn16_on; /* 16-bit on/off. */
9394 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9395 int pic_ext_target = 0;
9396 bfd_signed_vma foff;
9398 unsigned long reloc;
9400 irelend = internal_relocs + sec->reloc_count;
9401 seq_len = GET_SEQ_LEN (irel->r_addend);
9402 laddr = irel->r_offset;
9403 *insn_len = seq_len;
9404 insn16_on = IS_16BIT_ON (irel->r_addend);
9407 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9408 R_NDS32_HI20_RELA, laddr);
9410 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9411 R_NDS32_LO12S0_ORI_RELA, laddr + 4);
9412 if (hi_irelfn == irelend || lo_irelfn == irelend)
9415 ("%B: warning: R_NDS32_LONGJUMP1 points to unrecognized"
9416 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9420 /* Get the value of the symbol referred to by the reloc. */
9421 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9424 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
9425 || foff < -CONSERVATIVE_24BIT_S1)
9428 if (insn16_on && foff >= -ACCURATE_8BIT_S1
9429 && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2))
9432 /* 16-bit on, but not optimized for speed. */
9433 reloc = R_NDS32_9_PCREL_RELA;
9435 bfd_putb16 (insn16, contents + irel->r_offset);
9438 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9443 reloc = R_NDS32_25_PCREL_RELA;
9445 bfd_putb32 (insn, contents + irel->r_offset);
9448 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16);
9453 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9455 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9457 if ((seq_len & 0x2) && ((*insn_len & 2) == 0))
9459 insn16 = NDS32_NOP16;
9460 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9462 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9464 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9470 /* Revert condition branch. This function does not check if the input
9471 instruction is condition branch or not. */
9474 nds32_elf_convert_branch (uint16_t insn16, uint32_t insn,
9475 uint16_t *re_insn16, uint32_t *re_insn)
9477 uint32_t comp_insn = 0;
9478 uint16_t comp_insn16 = 0;
9482 if (N32_OP6 (insn) == N32_OP6_BR1)
9485 comp_insn = (insn ^ 0x4000) & 0xffffc000;
9486 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5)
9488 /* Insn can be contracted to 16-bit implied r5. */
9490 (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38;
9491 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9494 else if (N32_OP6 (insn) == N32_OP6_BR3)
9496 /* bnec $ta, imm11, label. */
9497 comp_insn = (insn ^ 0x80000) & 0xffffff00;
9501 comp_insn = (insn ^ 0x10000) & 0xffffc000;
9502 if (N32_BR2_SUB (insn) == N32_BR2_BEQZ
9503 || N32_BR2_SUB (insn) == N32_BR2_BNEZ)
9505 if (N32_IS_RT3 (insn))
9507 /* Insn can be contracted to 16-bit. */
9509 (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38;
9510 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9512 else if (N32_RT5 (insn) == REG_R15)
9514 /* Insn can be contracted to 16-bit. */
9516 (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38;
9523 switch ((insn16 & 0xf000) >> 12)
9526 /* beqz38 or bnez38 */
9527 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9528 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ;
9529 comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20;
9533 /* beqs38 or bnes38 */
9534 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9535 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ;
9536 comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20)
9541 /* beqzS8 or bnezS8 */
9542 comp_insn16 = (insn16 ^ 0x0100) & 0xff00;
9543 comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ;
9544 comp_insn |= REG_R15 << 20;
9551 if (comp_insn && re_insn)
9552 *re_insn = comp_insn;
9553 if (comp_insn16 && re_insn16)
9554 *re_insn16 = comp_insn16;
9557 /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */
9560 nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9561 Elf_Internal_Rela *internal_relocs, int *insn_len,
9562 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9563 Elf_Internal_Shdr *symtab_hdr)
9565 /* There are 3 variations for LONGJUMP2
9566 case 2-4; 1st insn convertible, 16-bit on,
9567 optimize off or optimize for space
9568 bnes38 rt, ra, $1 ; LONGJUMP2
9572 case 4-4; 1st insn not convertible
9573 bne rt, ra, $1 ; LONGJUMP2
9577 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9578 bne rt, ra, $1 ; LONGJUMP2
9582 /* Get the reloc for the address from which the register is
9583 being loaded. This reloc will tell us which function is
9584 actually being called. */
9587 int seq_len; /* Original length of instruction sequence. */
9588 Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend;
9589 int pic_ext_target = 0, first_size;
9591 bfd_signed_vma foff;
9592 uint32_t insn, re_insn = 0;
9593 uint16_t insn16, re_insn16 = 0;
9594 unsigned long reloc, cond_reloc;
9596 enum elf_nds32_reloc_type checked_types[] =
9597 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9599 irelend = internal_relocs + sec->reloc_count;
9600 seq_len = GET_SEQ_LEN (irel->r_addend);
9601 laddr = irel->r_offset;
9602 *insn_len = seq_len;
9603 first_size = (seq_len == 6) ? 2 : 4;
9606 find_relocs_at_address_addr (irel, internal_relocs,
9607 irelend, R_NDS32_25_PCREL_RELA,
9608 laddr + first_size);
9610 for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++)
9613 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9614 checked_types[i], laddr);
9615 if (cond_irelfn != irelend)
9619 if (i2_irelfn == irelend || cond_irelfn == irelend)
9622 ("%B: warning: R_NDS32_LONGJUMP2 points to unrecognized"
9623 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9627 /* Get the value of the symbol referred to by the reloc. */
9629 calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr,
9631 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9632 || foff >= CONSERVATIVE_16BIT_S1)
9635 /* Get the all corresponding instructions. */
9636 if (first_size == 4)
9638 insn = bfd_getb32 (contents + laddr);
9639 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9643 insn16 = bfd_getb16 (contents + laddr);
9644 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9647 if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size)
9648 && foff < ACCURATE_8BIT_S1 - first_size)
9650 if (first_size == 4)
9652 /* Don't convert it to 16-bit now, keep this as relaxable for
9653 ``label reloc; INSN16''. */
9655 /* Save comp_insn32 to buffer. */
9656 bfd_putb32 (re_insn, contents + irel->r_offset);
9658 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9659 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9660 cond_reloc = R_NDS32_INSN16;
9664 bfd_putb16 (re_insn16, contents + irel->r_offset);
9666 reloc = R_NDS32_9_PCREL_RELA;
9667 cond_reloc = R_NDS32_NONE;
9670 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9671 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9672 && foff < ACCURATE_14BIT_S1 - first_size))
9674 /* beqs label ; 15_PCREL */
9675 bfd_putb32 (re_insn, contents + irel->r_offset);
9677 reloc = R_NDS32_15_PCREL_RELA;
9678 cond_reloc = R_NDS32_NONE;
9680 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9681 && foff >= -CONSERVATIVE_16BIT_S1
9682 && foff < CONSERVATIVE_16BIT_S1)
9684 /* beqz label ; 17_PCREL */
9685 bfd_putb32 (re_insn, contents + irel->r_offset);
9687 reloc = R_NDS32_17_PCREL_RELA;
9688 cond_reloc = R_NDS32_NONE;
9693 /* Set all relocations. */
9694 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc);
9695 irel->r_addend = i2_irelfn->r_addend;
9697 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9699 cond_irelfn->r_addend = 0;
9701 if ((seq_len ^ *insn_len ) & 0x2)
9703 insn16 = NDS32_NOP16;
9704 bfd_putb16 (insn16, contents + irel->r_offset + 4);
9705 i2_irelfn->r_offset = 4;
9706 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9708 i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9712 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9717 /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */
9720 nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9721 Elf_Internal_Rela *internal_relocs, int *insn_len,
9722 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9723 Elf_Internal_Shdr *symtab_hdr)
9725 /* There are 5 variations for LONGJUMP3
9726 case 1: 2-4-4-2; 1st insn convertible, 16-bit on,
9727 optimize off or optimize for space
9728 bnes38 rt, ra, $1 ; LONGJUMP3
9729 sethi ta, hi20(symbol) ; HI20
9730 ori ta, ta, lo12(symbol) ; LO12S0
9734 case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed
9735 bnes38 rt, ra, $1 ; LONGJUMP3
9736 sethi ta, hi20(symbol) ; HI20
9737 ori ta, ta, lo12(symbol) ; LO12S0
9741 case 3: 4-4-4-2; 1st insn not convertible, 16-bit on,
9742 optimize off or optimize for space
9743 bne rt, ra, $1 ; LONGJUMP3
9744 sethi ta, hi20(symbol) ; HI20
9745 ori ta, ta, lo12(symbol) ; LO12S0
9749 case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care
9750 16-bit off if no INSN16
9751 bne rt, ra, $1 ; LONGJUMP3
9752 sethi ta, hi20(symbol) ; HI20
9753 ori ta, ta, lo12(symbol) ; LO12S0
9757 case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed
9758 16-bit off if no INSN16
9759 bne rt, ra, $1 ; LONGJUMP3
9760 sethi ta, hi20(symbol) ; HI20
9761 ori ta, ta, lo12(symbol) ; LO12S0
9765 /* Get the reloc for the address from which the register is
9766 being loaded. This reloc will tell us which function is
9767 actually being called. */
9768 enum elf_nds32_reloc_type checked_types[] =
9769 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9771 int reloc_off = 0, cond_removed = 0, convertible;
9773 int seq_len; /* Original length of instruction sequence. */
9774 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9775 int pic_ext_target = 0, first_size;
9777 bfd_signed_vma foff;
9778 uint32_t insn, re_insn = 0;
9779 uint16_t insn16, re_insn16 = 0;
9780 unsigned long reloc, cond_reloc;
9782 irelend = internal_relocs + sec->reloc_count;
9783 seq_len = GET_SEQ_LEN (irel->r_addend);
9784 laddr = irel->r_offset;
9785 *insn_len = seq_len;
9787 convertible = IS_1ST_CONVERT (irel->r_addend);
9794 /* Get all needed relocations. */
9796 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9797 R_NDS32_HI20_RELA, laddr + first_size);
9799 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9800 R_NDS32_LO12S0_ORI_RELA,
9801 laddr + first_size + 4);
9803 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
9806 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9807 checked_types[i], laddr);
9808 if (cond_irelfn != irelend)
9812 if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend)
9815 ("%B: warning: R_NDS32_LONGJUMP3 points to unrecognized"
9816 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9820 /* Get the value of the symbol referred to by the reloc. */
9821 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9824 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9825 || foff >= CONSERVATIVE_24BIT_S1)
9828 /* Get the all corresponding instructions. */
9829 if (first_size == 4)
9831 insn = bfd_getb32 (contents + laddr);
9832 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9836 insn16 = bfd_getb16 (contents + laddr);
9837 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9840 /* For simplicity of coding, we are going to modify the section
9841 contents, the section relocs, and the BFD symbol table. We
9842 must tell the rest of the code not to free up this
9843 information. It would be possible to instead create a table
9844 of changes which have to be made, as is done in coff-mips.c;
9845 that would be more work, but would require less memory when
9846 the linker is run. */
9848 if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size
9849 && foff < ACCURATE_8BIT_S1 - first_size)
9851 if (!(seq_len & 0x2))
9853 /* Don't convert it to 16-bit now, keep this as relaxable
9854 for ``label reloc; INSN1a''6. */
9855 /* Save comp_insn32 to buffer. */
9856 bfd_putb32 (re_insn, contents + irel->r_offset);
9858 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9859 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9860 cond_reloc = R_NDS32_INSN16;
9864 /* Not optimize for speed; convert sequence to 16-bit. */
9865 /* Save comp_insn16 to buffer. */
9866 bfd_putb16 (re_insn16, contents + irel->r_offset);
9868 reloc = R_NDS32_9_PCREL_RELA;
9869 cond_reloc = R_NDS32_NONE;
9873 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9874 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9875 && foff < ACCURATE_14BIT_S1 - first_size))
9877 /* beqs label ; 15_PCREL */
9878 bfd_putb32 (re_insn, contents + irel->r_offset);
9880 reloc = R_NDS32_15_PCREL_RELA;
9881 cond_reloc = R_NDS32_NONE;
9884 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9885 && foff >= -CONSERVATIVE_16BIT_S1
9886 && foff < CONSERVATIVE_16BIT_S1)
9888 /* beqz label ; 17_PCREL */
9889 bfd_putb32 (re_insn, contents + irel->r_offset);
9891 reloc = R_NDS32_17_PCREL_RELA;
9892 cond_reloc = R_NDS32_NONE;
9895 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
9896 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
9898 /* Relax to one of the following 3 variations
9900 case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize
9902 bnes38 rt, $1 ; LONGJUMP2
9906 case 4-4; 1st insn not convertible, others don't care
9907 bne rt, ra, $1 ; LONGJUMP2
9911 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9912 bne rt, ra, $1 ; LONGJUMP2
9916 /* Offset for first instruction. */
9918 /* Use j label as second instruction. */
9919 *insn_len = 4 + first_size;
9921 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9922 reloc = R_NDS32_LONGJUMP2;
9923 cond_reloc = R_NDS32_25_PLTREL;
9928 if (cond_removed == 1)
9930 /* Set all relocations. */
9931 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9932 irel->r_addend = hi_irelfn->r_addend;
9934 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9936 cond_irelfn->r_addend = 0;
9937 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9942 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
9943 irel->r_addend = irel->r_addend;
9944 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9948 if ((seq_len ^ *insn_len ) & 0x2)
9950 insn16 = NDS32_NOP16;
9951 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9952 lo_irelfn->r_offset = *insn_len;
9953 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9955 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9959 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9964 /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */
9967 nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9968 Elf_Internal_Rela *internal_relocs, int *insn_len,
9969 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9970 Elf_Internal_Shdr *symtab_hdr)
9972 /* The pattern for LONGCALL4. Support for function cse.
9973 sethi ta, hi20(symbol) ; LONGCALL4/HI20
9974 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9975 jral ta ; PTR_RES/EMPTY/INSN16 */
9979 Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel;
9980 Elf_Internal_Rela *irelend;
9981 int pic_ext_target = 0;
9982 bfd_signed_vma foff;
9984 irelend = internal_relocs + sec->reloc_count;
9985 laddr = irel->r_offset;
9987 /* Get the reloc for the address from which the register is
9988 being loaded. This reloc will tell us which function is
9989 actually being called. */
9990 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9991 R_NDS32_HI20_RELA, laddr);
9993 if (hi_irel == irelend)
9996 ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized"
9997 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10001 /* Get the value of the symbol referred to by the reloc. */
10002 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10005 /* This condition only happened when symbol is undefined. */
10006 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10007 || foff >= CONSERVATIVE_24BIT_S1)
10010 /* Relax to: jal symbol; 25_PCREL */
10011 /* For simplicity of coding, we are going to modify the section
10012 contents, the section relocs, and the BFD symbol table. We
10013 must tell the rest of the code not to free up this
10014 information. It would be possible to instead create a table
10015 of changes which have to be made, as is done in coff-mips.c;
10016 that would be more work, but would require less memory when
10017 the linker is run. */
10019 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10020 R_NDS32_PTR_RESOLVED, irel->r_addend);
10021 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10022 R_NDS32_EMPTY, irel->r_addend);
10024 if (ptr_irel == irelend || em_irel == irelend)
10027 ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized"
10028 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10031 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10032 insn = bfd_getb32 (contents + irel->r_addend);
10033 if (insn & 0x80000000)
10036 /* Replace the long call with a jal. */
10037 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10038 R_NDS32_25_PCREL_RELA);
10039 ptr_irel->r_addend = 1;
10041 /* We don't resolve this here but resolve it in relocate_section. */
10043 bfd_putb32 (insn, contents + em_irel->r_offset);
10046 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10048 /* If there is function cse, HI20 can not remove now. */
10049 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10050 R_NDS32_LONGCALL4, laddr);
10051 if (call_irel == irelend)
10055 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10058 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10059 R_NDS32_INSN16, irel->r_addend);
10060 if (insn_irel != irelend)
10061 insn_irel->r_info =
10062 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10067 /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */
10070 nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10071 Elf_Internal_Rela *internal_relocs, int *insn_len,
10072 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10073 Elf_Internal_Shdr *symtab_hdr)
10075 /* The pattern for LONGCALL5.
10076 bltz rt, .L1 ; LONGCALL5/17_PCREL
10077 jal symbol ; 25_PCREL
10082 Elf_Internal_Rela *cond_irel, *irelend;
10083 int pic_ext_target = 0;
10084 bfd_signed_vma foff;
10086 irelend = internal_relocs + sec->reloc_count;
10087 laddr = irel->r_offset;
10088 insn = bfd_getb32 (contents + laddr);
10090 /* Get the reloc for the address from which the register is
10091 being loaded. This reloc will tell us which function is
10092 actually being called. */
10094 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10095 R_NDS32_25_PCREL_RELA, irel->r_addend);
10096 if (cond_irel == irelend)
10099 ("%B: warning: R_NDS32_LONGCALL5 points to unrecognized"
10100 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10104 /* Get the value of the symbol referred to by the reloc. */
10105 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10108 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10109 || foff >= CONSERVATIVE_16BIT_S1)
10112 /* Relax to bgezal rt, label ; 17_PCREL
10113 or bltzal rt, label ; 17_PCREL */
10115 /* Convert to complimentary conditional call. */
10116 insn = CONVERT_CONDITION_CALL (insn);
10118 /* For simplicity of coding, we are going to modify the section
10119 contents, the section relocs, and the BFD symbol table. We
10120 must tell the rest of the code not to free up this
10121 information. It would be possible to instead create a table
10122 of changes which have to be made, as is done in coff-mips.c;
10123 that would be more work, but would require less memory when
10124 the linker is run. */
10126 /* Modify relocation and contents. */
10127 cond_irel->r_info =
10128 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA);
10130 /* Replace the long call with a bgezal. */
10131 bfd_putb32 (insn, contents + cond_irel->r_offset);
10134 /* Clean unnessary relocations. */
10135 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10137 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10138 R_NDS32_17_PCREL_RELA, laddr);
10139 cond_irel->r_info =
10140 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10145 /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */
10148 nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10149 Elf_Internal_Rela *internal_relocs, int *insn_len,
10150 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10151 Elf_Internal_Shdr *symtab_hdr)
10153 /* The pattern for LONGCALL6.
10154 bltz rt, .L1 ; LONGCALL6/17_PCREL
10155 sethi ta, hi20(symbol) ; HI20/PTR
10156 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10157 jral ta ; PTR_RES/EMPTY/INSN16
10162 Elf_Internal_Rela *em_irel, *cond_irel, *irelend;
10163 int pic_ext_target = 0;
10164 bfd_signed_vma foff;
10166 irelend = internal_relocs + sec->reloc_count;
10167 laddr = irel->r_offset;
10169 /* Get the reloc for the address from which the register is
10170 being loaded. This reloc will tell us which function is
10171 actually being called. */
10172 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10173 R_NDS32_EMPTY, irel->r_addend);
10175 if (em_irel == irelend)
10178 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10179 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10183 /* Get the value of the symbol referred to by the reloc. */
10184 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10187 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10188 || foff >= CONSERVATIVE_24BIT_S1)
10191 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10192 insn = bfd_getb32 (contents + irel->r_addend);
10193 if (insn & 0x80000000)
10196 insn = bfd_getb32 (contents + laddr);
10197 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10199 /* Relax to bgezal rt, label ; 17_PCREL
10200 or bltzal rt, label ; 17_PCREL */
10202 /* Convert to complimentary conditional call. */
10204 insn = CONVERT_CONDITION_CALL (insn);
10205 bfd_putb32 (insn, contents + em_irel->r_offset);
10208 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA);
10210 /* Set resolved relocation. */
10212 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10213 R_NDS32_PTR_RESOLVED, irel->r_addend);
10214 if (cond_irel == irelend)
10217 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10218 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10221 cond_irel->r_addend = 1;
10223 /* Clear relocations. */
10226 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10229 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10230 R_NDS32_17_PCREL_RELA, laddr);
10231 if (cond_irel != irelend)
10232 cond_irel->r_info =
10233 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10236 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10237 R_NDS32_INSN16, irel->r_addend);
10238 if (cond_irel != irelend)
10239 cond_irel->r_info =
10240 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10243 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
10245 /* Relax to the following instruction sequence
10246 bltz rt, .L1 ; LONGCALL2/17_PCREL
10247 jal symbol ; 25_PCREL/PTR_RES
10250 /* Convert instruction. */
10252 bfd_putb32 (insn, contents + em_irel->r_offset);
10254 /* Convert relocations. */
10255 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10256 R_NDS32_25_PCREL_RELA);
10258 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5);
10260 /* Set resolved relocation. */
10262 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10263 R_NDS32_PTR_RESOLVED, irel->r_addend);
10264 if (cond_irel == irelend)
10267 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10268 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10271 cond_irel->r_addend = 1;
10274 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10275 R_NDS32_INSN16, irel->r_addend);
10276 if (cond_irel != irelend)
10277 cond_irel->r_info =
10278 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10283 /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */
10286 nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10287 Elf_Internal_Rela *internal_relocs, int *insn_len,
10288 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10289 Elf_Internal_Shdr *symtab_hdr)
10291 /* The pattern for LONGJUMP4.
10292 sethi ta, hi20(symbol) ; LONGJUMP4/HI20
10293 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10294 jr ta ; PTR_RES/INSN16/EMPTY */
10297 int seq_len; /* Original length of instruction sequence. */
10299 Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend;
10300 int pic_ext_target = 0;
10301 bfd_signed_vma foff;
10303 irelend = internal_relocs + sec->reloc_count;
10304 seq_len = GET_SEQ_LEN (irel->r_addend);
10305 laddr = irel->r_offset;
10306 *insn_len = seq_len;
10308 /* Get the reloc for the address from which the register is
10309 being loaded. This reloc will tell us which function is
10310 actually being called. */
10312 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10313 R_NDS32_HI20_RELA, laddr);
10315 if (hi_irel == irelend)
10318 ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized"
10319 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10323 /* Get the value of the symbol referred to by the reloc. */
10324 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10327 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
10328 || foff < -CONSERVATIVE_24BIT_S1)
10331 /* Convert it to "j label", it may be converted to j8 in the final
10332 pass of relaxation. Therefore, we do not consider this currently. */
10333 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10334 R_NDS32_PTR_RESOLVED, irel->r_addend);
10335 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10336 R_NDS32_EMPTY, irel->r_addend);
10338 if (ptr_irel == irelend || em_irel == irelend)
10341 ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized"
10342 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10347 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA);
10348 ptr_irel->r_addend = 1;
10350 /* Write instruction. */
10352 bfd_putb32 (insn, contents + em_irel->r_offset);
10354 /* Clear relocations. */
10355 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10357 /* If there is function cse, HI20 can not remove now. */
10358 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10359 R_NDS32_LONGJUMP4, laddr);
10360 if (call_irel == irelend)
10364 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10370 /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */
10373 nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10374 Elf_Internal_Rela *internal_relocs, int *insn_len,
10375 int *seq_len, bfd_byte *contents,
10376 Elf_Internal_Sym *isymbuf,
10377 Elf_Internal_Shdr *symtab_hdr)
10379 /* There are 2 variations for LONGJUMP5
10380 case 2-4; 1st insn convertible, 16-bit on.
10381 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10382 j label ; 25_PCREL/INSN16
10385 case 4-4; 1st insn not convertible
10386 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10387 j label ; 25_PCREL/INSN16
10391 Elf_Internal_Rela *cond_irel, *irelend;
10392 int pic_ext_target = 0;
10394 bfd_signed_vma foff;
10395 uint32_t insn, re_insn = 0;
10396 uint16_t insn16, re_insn16 = 0;
10397 unsigned long reloc;
10399 enum elf_nds32_reloc_type checked_types[] =
10400 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10401 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10403 irelend = internal_relocs + sec->reloc_count;
10404 laddr = irel->r_offset;
10406 /* Get the reloc for the address from which the register is
10407 being loaded. This reloc will tell us which function is
10408 actually being called. */
10411 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10412 R_NDS32_25_PCREL_RELA, irel->r_addend);
10413 if (cond_irel == irelend)
10416 ("%B: warning: R_NDS32_LONGJUMP5 points to unrecognized"
10417 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10421 /* Get the value of the symbol referred to by the reloc. */
10422 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10425 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10426 || foff >= CONSERVATIVE_16BIT_S1)
10429 /* Get the all corresponding instructions. */
10430 insn = bfd_getb32 (contents + laddr);
10431 /* Check instruction size. */
10432 if (insn & 0x80000000)
10435 insn16 = insn >> 16;
10436 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10439 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10441 if (N32_OP6 (re_insn) == N32_OP6_BR1
10442 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10444 /* beqs label ; 15_PCREL. */
10445 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10446 reloc = R_NDS32_15_PCREL_RELA;
10448 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10449 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10451 /* beqz label ; 17_PCREL. */
10452 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10453 reloc = R_NDS32_17_PCREL_RELA;
10455 else if ( N32_OP6 (re_insn) == N32_OP6_BR3
10456 && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1)
10458 /* beqc label ; 9_PCREL. */
10459 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10460 reloc = R_NDS32_WORD_9_PCREL_RELA;
10465 /* Set all relocations. */
10466 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc);
10468 /* Clean relocations. */
10469 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10470 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10472 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10473 checked_types[i], laddr);
10474 if (cond_irel != irelend)
10477 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10479 /* If the branch instruction is 2 byte, it cannot remove
10480 directly. Only convert it to nop16 and remove it after
10481 checking alignment issue. */
10482 insn16 = NDS32_NOP16;
10483 bfd_putb16 (insn16, contents + laddr);
10484 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10487 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10496 /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */
10499 nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10500 Elf_Internal_Rela *internal_relocs, int *insn_len,
10501 int *seq_len, bfd_byte *contents,
10502 Elf_Internal_Sym *isymbuf,
10503 Elf_Internal_Shdr *symtab_hdr)
10505 /* There are 5 variations for LONGJUMP6
10506 case : 2-4-4-4; 1st insn convertible, 16-bit on.
10507 bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10508 sethi ta, hi20(symbol) ; HI20/PTR
10509 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10510 jr ta ; PTR_RES/INSN16/EMPTY
10513 case : 4-4-4-4; 1st insn not convertible, 16-bit on.
10514 bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10515 sethi ta, hi20(symbol) ; HI20/PTR
10516 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10517 jr ta ; PTR_RES/INSN16/EMPTY
10520 enum elf_nds32_reloc_type checked_types[] =
10521 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10522 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10524 int reloc_off = 0, cond_removed = 0;
10526 Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel;
10527 int pic_ext_target = 0;
10529 bfd_signed_vma foff;
10530 uint32_t insn, re_insn = 0;
10531 uint16_t insn16, re_insn16 = 0;
10532 unsigned long reloc;
10534 irelend = internal_relocs + sec->reloc_count;
10535 laddr = irel->r_offset;
10537 /* Get the reloc for the address from which the register is
10538 being loaded. This reloc will tell us which function is
10539 actually being called. */
10540 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10541 R_NDS32_EMPTY, irel->r_addend);
10543 if (em_irel == irelend)
10546 ("%B: warning: R_NDS32_LONGJUMP6 points to unrecognized"
10547 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10551 /* Get the value of the symbol referred to by the reloc. */
10552 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10555 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10556 || foff >= CONSERVATIVE_24BIT_S1)
10559 insn = bfd_getb32 (contents + laddr);
10560 /* Check instruction size. */
10561 if (insn & 0x80000000)
10564 insn16 = insn >> 16;
10565 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10568 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10570 /* For simplicity of coding, we are going to modify the section
10571 contents, the section relocs, and the BFD symbol table. We
10572 must tell the rest of the code not to free up this
10573 information. It would be possible to instead create a table
10574 of changes which have to be made, as is done in coff-mips.c;
10575 that would be more work, but would require less memory when
10576 the linker is run. */
10578 if (N32_OP6 (re_insn) == N32_OP6_BR1
10579 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10581 /* beqs label ; 15_PCREL */
10582 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10583 reloc = R_NDS32_15_PCREL_RELA;
10586 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10587 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10589 /* beqz label ; 17_PCREL */
10590 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10591 reloc = R_NDS32_17_PCREL_RELA;
10594 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
10595 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
10597 /* Relax to one of the following 2 variations
10599 case 2-4; 1st insn convertible, 16-bit on.
10600 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10601 j label ; 25_PCREL/INSN16
10604 case 4-4; 1st insn not convertible
10605 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10606 j label ; 25_PCREL/INSN16
10609 /* Use j label as second instruction. */
10611 reloc = R_NDS32_25_PCREL_RELA;
10612 bfd_putb32 (insn, contents + em_irel->r_offset);
10617 /* Set all relocations. */
10618 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc);
10621 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10622 R_NDS32_PTR_RESOLVED, em_irel->r_offset);
10623 cond_irel->r_addend = 1;
10625 /* Use INSN16 of first branch instruction to distinguish if keeping
10626 INSN16 of final instruction or not. */
10627 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10628 R_NDS32_INSN16, irel->r_offset);
10629 if (insn_irel == irelend)
10631 /* Clean the final INSN16. */
10633 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10634 R_NDS32_INSN16, em_irel->r_offset);
10635 insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10639 if (cond_removed == 1)
10643 /* Clear relocations. */
10644 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10646 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10649 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10650 checked_types[i], laddr);
10651 if (cond_irel != irelend)
10654 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10656 /* If the branch instruction is 2 byte, it cannot remove
10657 directly. Only convert it to nop16 and remove it after
10658 checking alignment issue. */
10659 insn16 = NDS32_NOP16;
10660 bfd_putb16 (insn16, contents + laddr);
10661 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10664 cond_irel->r_info =
10665 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10671 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
10672 R_NDS32_LONGJUMP5);
10678 /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */
10681 nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10682 Elf_Internal_Rela *internal_relocs, int *insn_len,
10683 int *seq_len, bfd_byte *contents,
10684 Elf_Internal_Sym *isymbuf,
10685 Elf_Internal_Shdr *symtab_hdr)
10687 /* There are 2 variations for LONGJUMP5
10688 case 2-4; 1st insn convertible, 16-bit on.
10689 movi55 ta, imm11 ; LONGJUMP7/INSN16
10690 beq rt, ta, label ; 15_PCREL
10692 case 4-4; 1st insn not convertible
10693 movi55 ta, imm11 ; LONGJUMP7/INSN16
10694 beq rt, ta, label ; 15_PCREL */
10697 Elf_Internal_Rela *cond_irel, *irelend, *insn_irel;
10698 int pic_ext_target = 0;
10699 bfd_signed_vma foff;
10700 uint32_t insn, re_insn = 0;
10704 irelend = internal_relocs + sec->reloc_count;
10705 laddr = irel->r_offset;
10707 /* Get the reloc for the address from which the register is
10708 being loaded. This reloc will tell us which function is
10709 actually being called. */
10712 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10713 R_NDS32_15_PCREL_RELA, irel->r_addend);
10714 if (cond_irel == irelend)
10717 ("%B: warning: R_NDS32_LONGJUMP7 points to unrecognized"
10718 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10722 /* Get the value of the symbol referred to by the reloc. */
10723 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10726 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1
10727 || foff >= CONSERVATIVE_8BIT_S1)
10730 /* Get the first instruction for its size. */
10731 insn = bfd_getb32 (contents + laddr);
10732 if (insn & 0x80000000)
10735 /* Get the immediate from movi55. */
10736 imm11 = N16_IMM5S (insn >> 16);
10740 /* Get the immediate from movi. */
10741 imm11 = N32_IMM20S (insn);
10744 /* Get the branch instruction. */
10745 insn = bfd_getb32 (contents + irel->r_addend);
10746 /* Convert instruction to BR3. */
10747 if ((insn >> 14) & 0x1)
10748 re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0);
10750 re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0);
10752 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10754 /* Set all relocations. */
10755 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10756 R_NDS32_WORD_9_PCREL_RELA);
10758 /* Clean relocations. */
10759 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10760 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10761 R_NDS32_INSN16, irel->r_offset);
10762 if (insn_irel != irelend)
10766 /* If the first insntruction is 16bit, convert it to nop16. */
10767 insn16 = NDS32_NOP16;
10768 bfd_putb16 (insn16, contents + laddr);
10769 insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10772 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10780 #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f)
10782 /* Relax LOADSTORE relocation for nds32_elf_relax_section. */
10785 nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd,
10786 asection *sec, Elf_Internal_Rela *irel,
10787 Elf_Internal_Rela *internal_relocs, int *insn_len,
10788 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10789 Elf_Internal_Shdr *symtab_hdr, int load_store_relax)
10791 int eliminate_sethi = 0, range_type;
10793 bfd_vma local_sda, laddr;
10794 int seq_len; /* Original length of instruction sequence. */
10796 Elf_Internal_Rela *hi_irelfn = NULL, *irelend;
10797 bfd_vma access_addr = 0;
10798 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10799 enum elf_nds32_reloc_type checked_types[] =
10800 { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20,
10801 R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20,
10802 R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20,
10803 R_NDS32_TLS_LE_HI20
10806 irelend = internal_relocs + sec->reloc_count;
10807 seq_len = GET_SEQ_LEN (irel->r_addend);
10808 laddr = irel->r_offset;
10809 *insn_len = seq_len;
10811 /* Get the high part relocation. */
10812 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10814 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10815 checked_types[i], laddr);
10816 if (hi_irelfn != irelend)
10820 if (hi_irelfn == irelend)
10823 ("%B: warning: R_NDS32_LOADSTORE points to unrecognized"
10824 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10828 range_type = GET_LOADSTORE_RANGE (irel->r_addend);
10829 nds32_elf_final_sda_base (sec->output_section->owner,
10830 link_info, &local_sda, FALSE);
10832 switch (ELF32_R_TYPE (hi_irelfn->r_info))
10834 case R_NDS32_HI20_RELA:
10835 insn = bfd_getb32 (contents + laddr);
10837 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10839 if (range_type == NDS32_LOADSTORE_IMM)
10841 struct elf_link_hash_entry *h = NULL;
10844 if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info)
10846 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
10847 h = elf_sym_hashes (abfd)[indx];
10850 if ((access_addr < CONSERVATIVE_20BIT)
10851 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10853 eliminate_sethi = 1;
10857 /* This is avoid to relax symbol address which is fixed
10858 relocations. Ex: _stack. */
10859 if (h && bfd_is_abs_section (h->root.u.def.section))
10863 if (!load_store_relax)
10866 /* Case for set gp register. */
10867 if (N32_RT5 (insn) == REG_GP)
10870 if (range_type == NDS32_LOADSTORE_FLOAT_S
10871 || range_type == NDS32_LOADSTORE_FLOAT_S)
10873 range_l = sdata_range[0][0];
10874 range_h = sdata_range[0][1];
10878 range_l = sdata_range[1][0];
10879 range_h = sdata_range[1][1];
10883 case R_NDS32_GOT_HI20:
10885 calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr);
10887 /* If this symbol is not in .got, the return value will be -1.
10888 Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE,
10889 a negative offset is allowed. */
10890 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10891 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10892 eliminate_sethi = 1;
10895 case R_NDS32_PLT_GOTREL_HI20:
10896 access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf,
10897 hi_irelfn, symtab_hdr);
10899 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10900 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10901 eliminate_sethi = 1;
10904 case R_NDS32_GOTOFF_HI20:
10906 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10908 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10909 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10910 eliminate_sethi = 1;
10913 case R_NDS32_GOTPC_HI20:
10914 /* The access_addr must consider r_addend of hi_irel. */
10915 access_addr = sec->output_section->vma + sec->output_offset
10916 + irel->r_offset + hi_irelfn->r_addend;
10918 if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT
10919 && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT)
10920 eliminate_sethi = 1;
10923 case R_NDS32_TLS_LE_HI20:
10925 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10926 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10927 access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10928 if ((range_type == NDS32_LOADSTORE_IMM)
10929 && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT
10930 && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT)
10931 eliminate_sethi = 1;
10938 /* Delete sethi instruction. */
10939 if (eliminate_sethi == 1
10940 || (local_sda <= access_addr && (access_addr - local_sda) < range_h)
10941 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
10943 hi_irelfn->r_info =
10944 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
10946 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10952 /* Relax LO12 relocation for nds32_elf_relax_section. */
10955 nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd,
10956 asection *sec, Elf_Internal_Rela *irel,
10957 Elf_Internal_Rela *internal_relocs, bfd_byte *contents,
10958 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr)
10961 bfd_vma local_sda, laddr;
10962 unsigned long reloc;
10963 bfd_vma access_addr;
10964 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10965 Elf_Internal_Rela *irelfn = NULL, *irelend;
10966 struct elf_link_hash_entry *h = NULL;
10969 /* For SDA base relative relaxation. */
10970 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
10971 &local_sda, FALSE);
10973 irelend = internal_relocs + sec->reloc_count;
10974 laddr = irel->r_offset;
10975 insn = bfd_getb32 (contents + laddr);
10977 if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI)
10980 access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10982 if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info)
10984 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
10985 h = elf_sym_hashes (abfd)[indx];
10988 if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT
10989 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10991 reloc = R_NDS32_20_RELA;
10992 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10993 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
10994 bfd_putb32 (insn, contents + laddr);
10996 /* This is avoid to relax symbol address which is fixed
10997 relocations. Ex: _stack. */
10998 else if (N32_OP6 (insn) == N32_OP6_ORI
10999 && h && bfd_is_abs_section (h->root.u.def.section))
11003 range_l = sdata_range[1][0];
11004 range_h = sdata_range[1][1];
11005 switch (ELF32_R_TYPE (irel->r_info))
11007 case R_NDS32_LO12S0_RELA:
11008 reloc = R_NDS32_SDA19S0_RELA;
11010 case R_NDS32_LO12S1_RELA:
11011 reloc = R_NDS32_SDA18S1_RELA;
11013 case R_NDS32_LO12S2_RELA:
11014 reloc = R_NDS32_SDA17S2_RELA;
11016 case R_NDS32_LO12S2_DP_RELA:
11017 range_l = sdata_range[0][0];
11018 range_h = sdata_range[0][1];
11019 reloc = R_NDS32_SDA12S2_DP_RELA;
11021 case R_NDS32_LO12S2_SP_RELA:
11022 range_l = sdata_range[0][0];
11023 range_h = sdata_range[0][1];
11024 reloc = R_NDS32_SDA12S2_SP_RELA;
11030 /* There are range_h and range_l because linker has to promise
11031 all sections move cross one page together. */
11032 if ((local_sda <= access_addr && (access_addr - local_sda) < range_h)
11033 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
11035 if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP)
11037 /* Maybe we should add R_NDS32_INSN16 reloc type here
11038 or manually do some optimization. sethi can't be
11039 eliminated when updating $gp so the relative ori
11040 needs to be preserved. */
11043 if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info),
11046 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11047 bfd_putb32 (insn, contents + laddr);
11049 irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11051 /* SDA17 must keep INSN16 for converting fp_as_gp. */
11052 if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA)
11054 ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE);
11061 /* Relax low part of PIC instruction pattern. */
11064 nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd,
11065 asection *sec, Elf_Internal_Rela *irel,
11066 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11067 Elf_Internal_Shdr *symtab_hdr)
11070 bfd_vma local_sda, laddr;
11071 bfd_signed_vma foff;
11072 unsigned long reloc;
11074 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11075 &local_sda, FALSE);
11076 laddr = irel->r_offset;
11077 insn = bfd_getb32 (contents + laddr);
11079 if (N32_OP6 (insn) != N32_OP6_ORI)
11082 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12)
11084 foff = calculate_got_memory_address (abfd, link_info, irel,
11085 symtab_hdr) - local_sda;
11086 reloc = R_NDS32_GOT20;
11088 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12)
11090 foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
11091 symtab_hdr) - local_sda;
11092 reloc = R_NDS32_PLT_GOTREL_LO20;
11094 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12)
11096 foff = calculate_memory_address (abfd, irel, isymbuf,
11097 symtab_hdr) - local_sda;
11098 reloc = R_NDS32_GOTOFF;
11100 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12)
11102 foff = local_sda - sec->output_section->vma + sec->output_offset
11103 + irel->r_offset + irel->r_addend;
11104 reloc = R_NDS32_GOTPC20;
11109 if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT))
11111 /* Turn into MOVI. */
11112 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11113 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11114 bfd_putb32 (insn, contents + laddr);
11118 /* Relax low part of LE TLS instruction pattern. */
11121 nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd,
11122 Elf_Internal_Rela *irel,
11123 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11124 Elf_Internal_Shdr *symtab_hdr)
11128 bfd_signed_vma foff;
11129 unsigned long reloc;
11131 laddr = irel->r_offset;
11132 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11133 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11134 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11135 insn = bfd_getb32 (contents + laddr);
11137 if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT
11138 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT)
11140 /* Pattern sethi-ori transform to movi. */
11141 reloc = R_NDS32_TLS_LE_20;
11142 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11143 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11144 bfd_putb32 (insn, contents + laddr);
11148 /* Relax LE TLS calculate address instruction pattern. */
11151 nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd,
11152 asection *sec, Elf_Internal_Rela *irel,
11153 Elf_Internal_Rela *internal_relocs,
11154 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11155 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11157 /* Local TLS non-pic
11158 sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20
11159 ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12
11160 add ra, ta, tp ; TLS_LE_ADD */
11164 bfd_signed_vma foff;
11165 Elf_Internal_Rela *i1_irelfn, *irelend;
11167 irelend = internal_relocs + sec->reloc_count;
11168 laddr = irel->r_offset;
11169 insn = bfd_getb32 (contents + laddr);
11170 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11171 R_NDS32_PTR_RESOLVED);
11172 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11173 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11174 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11176 /* The range is +/-16k. */
11177 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
11178 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
11180 /* Transform add to addi. */
11181 insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0);
11183 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
11185 bfd_putb32 (insn, contents + laddr);
11186 if (i1_irelfn != irelend)
11188 i1_irelfn->r_addend |= 1;
11194 /* Relax LE TLS load store instruction pattern. */
11197 nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd,
11198 asection *sec, Elf_Internal_Rela *irel,
11199 Elf_Internal_Rela *internal_relocs,
11200 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11201 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11206 bfd_signed_vma foff;
11207 Elf_Internal_Rela *i1_irelfn, *irelend;
11210 irelend = internal_relocs + sec->reloc_count;
11211 laddr = irel->r_offset;
11212 insn = bfd_getb32 (contents + laddr);
11213 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11214 R_NDS32_PTR_RESOLVED);
11215 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11216 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11217 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11219 switch ((N32_OP6 (insn) << 8) | (insn & 0xff))
11221 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11222 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11223 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11224 /* The range is +/-16k. */
11225 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
11226 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
11229 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11231 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
11235 /* Fall through. */
11236 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11237 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11238 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11239 /* The range is +/-32k. */
11240 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1
11241 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1)
11244 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11246 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1);
11250 /* Fall through. */
11251 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11252 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11253 /* The range is +/-64k. */
11254 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2
11255 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2)
11258 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11260 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2);
11264 /* Fall through. */
11271 bfd_putb32 (insn, contents + laddr);
11272 if (i1_irelfn != irelend)
11274 i1_irelfn->r_addend |= 1;
11280 /* Relax PTR relocation for nds32_elf_relax_section. */
11283 nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11284 Elf_Internal_Rela *internal_relocs, int *insn_len,
11285 int *seq_len, bfd_byte *contents)
11287 Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel;
11289 irelend = internal_relocs + sec->reloc_count;
11292 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11293 R_NDS32_PTR_RESOLVED, irel->r_addend);
11295 if (re_irel == irelend)
11298 ("%B: warning: R_NDS32_PTR points to unrecognized reloc at 0x%lx.",
11299 abfd, (long) irel->r_offset);
11303 if (re_irel->r_addend != 1)
11306 /* Pointed target is relaxed and no longer needs this void *,
11307 change the type to NONE. */
11308 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11310 /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does
11311 not exist, it means only count 1 and remove it directly. */
11312 /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */
11313 count_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11314 R_NDS32_PTR_COUNT);
11315 ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11317 if (count_irel != irelend)
11319 if (--count_irel->r_addend > 0)
11323 if (ptr_irel != irelend)
11326 /* If the PTR_COUNT is already 0, remove current instruction. */
11327 *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset);
11332 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11335 nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd,
11336 asection *sec, Elf_Internal_Rela *irel,
11337 Elf_Internal_Rela *internal_relocs,
11338 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11339 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11342 bfd_signed_vma foff;
11343 Elf_Internal_Rela *i1_irelfn, *irelend;
11344 bfd_vma local_sda, laddr;
11346 irelend = internal_relocs + sec->reloc_count;
11347 laddr = irel->r_offset;
11348 insn = bfd_getb32 (contents + laddr);
11350 /* FIXME: It's a little trouble to turn JRAL5 to JAL since
11351 we need additional space. It might be help if we could
11352 borrow some space from instructions to be eliminated
11353 such as sethi, ori, add. */
11354 if (insn & 0x80000000)
11357 if (nds32_elf_check_dup_relocs
11358 (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF))
11362 find_relocs_at_address (irel, internal_relocs, irelend,
11363 R_NDS32_PTR_RESOLVED);
11366 The boundary should be reduced since the .plt section hasn't
11367 been created and the address of specific entry is still unknown
11368 Maybe the range between the function call and the begin of the
11369 .text section can be used to decide if the .plt is in the range
11370 of function call. */
11372 if (N32_OP6 (insn) == N32_OP6_ALU1
11373 && N32_SUB5 (insn) == N32_ALU1_ADD)
11375 /* Get the value of the symbol referred to by the reloc. */
11376 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11377 &local_sda, FALSE);
11378 foff = (bfd_signed_vma) (calculate_plt_memory_address
11379 (abfd, link_info, isymbuf, irel,
11380 symtab_hdr) - local_sda);
11381 /* This condition only happened when symbol is undefined. */
11385 if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT)
11387 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11388 R_NDS32_PLT_GOTREL_LO19);
11390 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
11392 else if (N32_OP6 (insn) == N32_OP6_JREG
11393 && N32_SUB5 (insn) == N32_JREG_JRAL)
11395 /* Get the value of the symbol referred to by the reloc. */
11397 calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr);
11398 /* This condition only happened when symbol is undefined. */
11401 if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1)
11403 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL);
11409 bfd_putb32 (insn, contents + laddr);
11410 if (i1_irelfn != irelend)
11412 i1_irelfn->r_addend |= 1;
11417 /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */
11420 nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd,
11421 asection *sec, Elf_Internal_Rela *irel,
11422 Elf_Internal_Rela *internal_relocs,
11423 bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr,
11424 bfd_boolean *again)
11427 bfd_signed_vma foff;
11428 Elf_Internal_Rela *i1_irelfn, *irelend;
11429 bfd_vma local_sda, laddr;
11431 irelend = internal_relocs + sec->reloc_count;
11432 laddr = irel->r_offset;
11433 insn = bfd_getb32 (contents + laddr);
11434 if (insn & 0x80000000)
11437 if (nds32_elf_check_dup_relocs
11438 (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF))
11441 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11442 R_NDS32_PTR_RESOLVED);
11444 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11445 &local_sda, FALSE);
11446 foff = calculate_got_memory_address (abfd, link_info, irel,
11447 symtab_hdr) - local_sda;
11449 if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT)
11451 /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */
11452 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11454 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA);
11455 bfd_putb32 (insn, contents + laddr);
11456 if (i1_irelfn != irelend)
11458 i1_irelfn->r_addend |= 1;
11464 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11467 nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd,
11468 asection *sec, Elf_Internal_Rela *irel,
11469 Elf_Internal_Rela *internal_relocs,
11470 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11471 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11473 int opc_insn_gotoff;
11475 bfd_signed_vma foff;
11476 Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend;
11477 bfd_vma local_sda, laddr;
11479 irelend = internal_relocs + sec->reloc_count;
11480 laddr = irel->r_offset;
11481 insn = bfd_getb32 (contents + laddr);
11483 if (insn & 0x80000000)
11486 if (nds32_elf_check_dup_relocs
11487 (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF))
11490 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11491 R_NDS32_PTR_RESOLVED);
11492 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11493 &local_sda, FALSE);
11494 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11495 foff = foff - local_sda;
11497 if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT)
11500 /* Concatenate opcode and sub-opcode for switch case.
11501 It may be MEM or ALU1. */
11502 opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff);
11503 switch (opc_insn_gotoff)
11505 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11506 /* 4-byte aligned. */
11507 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11509 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11511 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11512 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
11514 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11516 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11517 /* 2-byte aligned. */
11518 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
11520 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11522 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11523 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18));
11525 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11527 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11528 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19));
11530 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11532 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11533 /* 1-byte aligned. */
11534 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
11536 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11538 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11539 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19));
11541 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11543 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11544 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
11546 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11548 case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD:
11549 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
11551 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11557 bfd_putb32 (insn, contents + laddr);
11558 if (i1_irelfn != irelend)
11560 i1_irelfn->r_addend |= 1;
11563 if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11564 R_NDS32_INSN16)) != irelend)
11565 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11570 nds32_relax_adjust_label (bfd *abfd, asection *sec,
11571 Elf_Internal_Rela *internal_relocs,
11572 bfd_byte *contents,
11573 nds32_elf_blank_t **relax_blank_list,
11574 int optimize, int opt_size)
11576 /* This code block is used to adjust 4-byte alignment by relax a pair
11577 of instruction a time.
11579 It recognizes three types of relocations.
11580 1. R_NDS32_LABEL - a aligment.
11581 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit.
11582 3. is_16bit_NOP () - remove a 16-bit instruction. */
11584 /* TODO: It seems currently implementation only support 4-byte aligment.
11585 We should handle any-aligment. */
11587 Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel;
11588 Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL;
11589 Elf_Internal_Rela rel_temp;
11590 Elf_Internal_Rela *irelend;
11594 /* Checking for branch relaxation relies on the relocations to
11595 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
11596 nds32_insertion_sort (internal_relocs, sec->reloc_count,
11597 sizeof (Elf_Internal_Rela), compar_reloc);
11599 irelend = internal_relocs + sec->reloc_count;
11601 /* Force R_NDS32_LABEL before R_NDS32_INSN16. */
11602 /* FIXME: Can we generate the right order in assembler?
11603 So we don't have to swapping them here. */
11605 for (label_rel = internal_relocs, insn_rel = internal_relocs;
11606 label_rel < irelend; label_rel++)
11608 if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL)
11611 /* Find the first reloc has the same offset with label_rel. */
11612 while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset)
11615 for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset;
11617 /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same
11619 if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16)
11622 if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset
11623 && insn_rel < label_rel)
11625 /* Swap the two reloc if the R_NDS32_INSN16 is
11626 before R_NDS32_LABEL. */
11627 memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela));
11628 memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela));
11629 memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela));
11635 /* If there were a sequence of R_NDS32_LABEL end up with .align 2
11636 or higher, remove other R_NDS32_LABEL with lower alignment.
11637 If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted,
11638 then the R_NDS32_LABEL sequence is broke. */
11639 for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++)
11641 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL)
11643 if (label_rel == NULL)
11645 if (tmp_rel->r_addend < 2)
11646 label_rel = tmp_rel;
11649 else if (tmp_rel->r_addend > 1)
11651 /* Remove all LABEL relocation from label_rel to tmp_rel
11652 including relocations with same offset as tmp_rel. */
11653 for (tmp2_rel = label_rel; tmp2_rel < tmp_rel
11654 || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++)
11656 if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL
11657 && tmp2_rel->r_addend < 2)
11659 ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info),
11665 else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel)
11667 /* A new INSN16 which can be converted, so clear label_rel. */
11668 if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs,
11670 || is_16bit_NOP (abfd, sec, tmp_rel))
11677 /* Optimized for speed and nothing has not been relaxed.
11678 It's time to align labels.
11679 We may convert a 16-bit instruction right before a label to
11680 32-bit, in order to align the label if necessary
11681 all reloc entries has been sorted by r_offset. */
11682 for (irel = internal_relocs; irel < irelend; irel++)
11684 if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16
11685 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL)
11688 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16)
11690 /* A new INSN16 found, resize the old one. */
11691 if (is_convert_32_to_16
11692 (abfd, sec, irel, internal_relocs, irelend, &insn16)
11693 || is_16bit_NOP (abfd, sec, irel))
11697 /* Previous INSN16 reloc exists, reduce its
11699 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11702 nds32_elf_write_16 (abfd, contents, insn_rel,
11703 internal_relocs, irelend, insn16);
11705 if (!insert_nds32_elf_blank_recalc_total
11706 (relax_blank_list, insn_rel->r_offset + 2, 2))
11709 else if (is_16bit_NOP (abfd, sec, insn_rel))
11711 if (!insert_nds32_elf_blank_recalc_total
11712 (relax_blank_list, insn_rel->r_offset, 2))
11716 ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE);
11718 /* Save the new one for later use. */
11722 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11725 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL)
11727 /* Search for label. */
11728 int force_relax = 0;
11730 /* Label on 16-bit instruction or optimization
11731 needless, just reset this reloc. */
11732 insn16 = bfd_getb16 (contents + irel->r_offset);
11733 if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000)))
11736 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11741 irel->r_offset - get_nds32_elf_blank_total (relax_blank_list,
11742 irel->r_offset, 1);
11746 /* Check if there is case which can not be aligned. */
11747 if (irel->r_addend == 2 && address & 0x2)
11752 /* Try to align this label. */
11754 if ((irel->r_addend & 0x1f) < 2)
11756 /* Check if there is a INSN16 at the same address.
11757 Label_rel always seats before insn_rel after
11760 /* Search for INSN16 at LABEL location. If INSN16 is at
11761 same location and this LABEL alignment is lower than 2,
11762 the INSN16 can be converted to 2-byte. */
11763 for (tmp_rel = irel;
11764 tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset;
11767 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16
11768 && (is_convert_32_to_16
11769 (abfd, sec, tmp_rel, internal_relocs,
11771 || is_16bit_NOP (abfd, sec, tmp_rel)))
11779 if (force_relax || irel->r_addend == 1 || address & 0x2)
11781 /* Label not aligned. */
11782 /* Previous reloc exists, reduce its size to 16-bit. */
11783 if (is_convert_32_to_16 (abfd, sec, insn_rel,
11784 internal_relocs, irelend, &insn16))
11786 nds32_elf_write_16 (abfd, contents, insn_rel,
11787 internal_relocs, irelend, insn16);
11789 if (!insert_nds32_elf_blank_recalc_total
11790 (relax_blank_list, insn_rel->r_offset + 2, 2))
11793 else if (is_16bit_NOP (abfd, sec, insn_rel))
11795 if (!insert_nds32_elf_blank_recalc_total
11796 (relax_blank_list, insn_rel->r_offset, 2))
11801 /* INSN16 reloc is used. */
11807 sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0);
11808 if (insn_rel && (address & 0x2 || opt_size))
11810 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11813 nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs,
11815 if (!insert_nds32_elf_blank_recalc_total
11816 (relax_blank_list, insn_rel->r_offset + 2, 2))
11818 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11821 else if (is_16bit_NOP (abfd, sec, insn_rel))
11823 if (!insert_nds32_elf_blank_recalc_total
11824 (relax_blank_list, insn_rel->r_offset, 2))
11826 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11834 /* Pick relaxation round. */
11837 nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again,
11838 struct elf_nds32_link_hash_table *table,
11839 struct bfd_link_info *link_info)
11841 static asection *final_sec, *first_sec = NULL;
11842 static bfd_boolean normal_again = FALSE;
11843 static bfd_boolean set = FALSE;
11844 static bfd_boolean first = TRUE;
11845 int round_table[] = {
11846 NDS32_RELAX_NORMAL_ROUND,
11847 NDS32_RELAX_JUMP_IFC_ROUND,
11848 NDS32_RELAX_EX9_BUILD_ROUND,
11849 NDS32_RELAX_EX9_REPLACE_ROUND,
11851 static int pass = 0;
11852 static int relax_round;
11854 /* The new round. */
11855 if (init && first_sec == sec)
11858 normal_again = FALSE;
11863 /* Run an empty run to get the final section. */
11864 relax_round = NDS32_RELAX_EMPTY_ROUND;
11866 /* It has to enter relax again because we can
11867 not make sure what the final turn is. */
11876 /* Not reenter yet. */
11878 return relax_round;
11881 relax_round = round_table[pass];
11883 if (!init && relax_round == NDS32_RELAX_NORMAL_ROUND && *again)
11884 normal_again = TRUE;
11886 if (!init && final_sec == sec)
11888 switch (relax_round)
11890 case NDS32_RELAX_NORMAL_ROUND:
11893 /* Normal relaxation done. */
11894 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11899 else if (table->target_optimize & NDS32_RELAX_EX9_ON)
11901 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11904 else if (table->ex9_import_file)
11906 /* Import ex9 table. */
11907 if (table->update_ex9_table)
11908 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11910 pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */
11911 nds32_elf_ex9_import_table (link_info);
11916 case NDS32_RELAX_JUMP_IFC_ROUND:
11917 if (!nds32_elf_ifc_finish (link_info))
11918 _bfd_error_handler (_("error: Jump IFC Fail."));
11919 if (table->target_optimize & NDS32_RELAX_EX9_ON)
11925 case NDS32_RELAX_EX9_BUILD_ROUND:
11926 nds32_elf_ex9_finish (link_info);
11930 case NDS32_RELAX_EX9_REPLACE_ROUND:
11931 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11933 /* Do jump IFC optimization again. */
11934 if (!nds32_elf_ifc_finish (link_info))
11935 _bfd_error_handler (_("error: Jump IFC Fail."));
11943 return relax_round;
11947 nds32_elf_relax_section (bfd *abfd, asection *sec,
11948 struct bfd_link_info *link_info, bfd_boolean *again)
11950 nds32_elf_blank_t *relax_blank_list = NULL;
11951 Elf_Internal_Shdr *symtab_hdr;
11952 Elf_Internal_Rela *internal_relocs;
11953 Elf_Internal_Rela *irel;
11954 Elf_Internal_Rela *irelend;
11955 Elf_Internal_Sym *isymbuf = NULL;
11956 bfd_byte *contents = NULL;
11957 bfd_boolean result = TRUE;
11963 /* Target dependnet option. */
11964 struct elf_nds32_link_hash_table *table;
11965 int load_store_relax;
11968 relax_blank_list = NULL;
11972 /* Nothing to do for
11973 * relocatable link or
11974 * non-relocatable section or
11975 * non-code section or
11977 * no reloc entry. */
11978 if (bfd_link_relocatable (link_info)
11979 || (sec->flags & SEC_RELOC) == 0
11980 || (sec->flags & SEC_EXCLUDE) == 1
11981 || (sec->flags & SEC_CODE) == 0
11985 /* 09.12.11 Workaround. */
11986 /* We have to adjust align for R_NDS32_LABEL if needed.
11987 The adjust approach only can fix 2-byte align once. */
11988 if (sec->alignment_power > 2)
11991 /* The optimization type to do. */
11993 table = nds32_elf_hash_table (link_info);
11994 relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info);
11995 switch (relax_round)
11997 case NDS32_RELAX_JUMP_IFC_ROUND:
11998 /* Here is the entrance of ifc jump relaxation. */
11999 if (!nds32_elf_ifc_calc (link_info, abfd, sec))
12001 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12004 case NDS32_RELAX_EX9_BUILD_ROUND:
12005 /* Here is the entrance of ex9 relaxation. There are two pass of
12006 ex9 relaxation. The one is to traverse all instructions and build
12007 the hash table. The other one is to compare instructions and replace
12009 if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info))
12011 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12014 case NDS32_RELAX_EX9_REPLACE_ROUND:
12015 if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec))
12019 case NDS32_RELAX_EMPTY_ROUND:
12020 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12023 case NDS32_RELAX_NORMAL_ROUND:
12025 if (sec->reloc_count == 0)
12030 /* The begining of general relaxation. */
12032 if (is_SDA_BASE_set == 0)
12035 is_SDA_BASE_set = 1;
12036 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
12038 relax_range_measurement (abfd);
12041 if (is_ITB_BASE_set == 0)
12043 /* Set the _ITB_BASE_. */
12044 if (!nds32_elf_ex9_itb_base (link_info))
12046 _bfd_error_handler (_("%B: error: Cannot set _ITB_BASE_"), abfd);
12047 bfd_set_error (bfd_error_bad_value);
12051 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12052 /* Relocations MUST be kept in memory, because relaxation adjust them. */
12053 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
12054 TRUE /* keep_memory */);
12055 if (internal_relocs == NULL)
12058 irelend = internal_relocs + sec->reloc_count;
12059 irel = find_relocs_at_address (internal_relocs, internal_relocs,
12060 irelend, R_NDS32_RELAX_ENTRY);
12062 if (irel == irelend)
12065 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
12067 if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG)
12069 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12073 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG)
12076 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG)
12080 load_store_relax = table->load_store_relax;
12082 /* Get symbol table and section content. */
12083 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12084 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12087 /* Do relax loop only when finalize is not done.
12088 Take care of relaxable relocs except INSN16. */
12089 for (irel = internal_relocs; irel < irelend; irel++)
12091 int seq_len; /* Original length of instruction sequence. */
12092 int insn_len = 0; /* Final length of instruction sequence. */
12093 bfd_boolean removed;
12096 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
12097 && (irel->r_addend & 0x1f) >= 2)
12100 /* Relocation Types
12101 R_NDS32_LONGCALL1 53
12102 R_NDS32_LONGCALL2 54
12103 R_NDS32_LONGCALL3 55
12104 R_NDS32_LONGJUMP1 56
12105 R_NDS32_LONGJUMP2 57
12106 R_NDS32_LONGJUMP3 58
12107 R_NDS32_LOADSTORE 59 */
12108 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1
12109 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE)
12110 seq_len = GET_SEQ_LEN (irel->r_addend);
12112 /* Relocation Types
12113 R_NDS32_LONGCALL4 107
12114 R_NDS32_LONGCALL5 108
12115 R_NDS32_LONGCALL6 109
12116 R_NDS32_LONGJUMP4 110
12117 R_NDS32_LONGJUMP5 111
12118 R_NDS32_LONGJUMP6 112
12119 R_NDS32_LONGJUMP7 113 */
12120 else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4
12121 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7)
12124 /* Relocation Types
12125 R_NDS32_LO12S0_RELA 30
12126 R_NDS32_LO12S1_RELA 29
12127 R_NDS32_LO12S2_RELA 28
12128 R_NDS32_LO12S2_SP_RELA 71
12129 R_NDS32_LO12S2_DP_RELA 70
12130 R_NDS32_GOT_LO12 46
12131 R_NDS32_GOTOFF_LO12 50
12132 R_NDS32_PLTREL_LO12 65
12133 R_NDS32_PLT_GOTREL_LO12 67
12134 R_NDS32_17IFC_PCREL_RELA 96
12135 R_NDS32_GOT_SUFF 193
12136 R_NDS32_GOTOFF_SUFF 194
12137 R_NDS32_PLT_GOT_SUFF 195
12138 R_NDS32_MULCALL_SUFF 196
12140 else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA
12141 && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA)
12142 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA
12143 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA
12144 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12
12145 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12
12146 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12
12147 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12
12148 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12
12149 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF
12150 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR)
12151 || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12152 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12
12153 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD
12154 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS)
12159 insn_len = seq_len;
12162 switch (ELF32_R_TYPE (irel->r_info))
12164 case R_NDS32_LONGCALL1:
12165 removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs,
12166 &insn_len, contents, isymbuf,
12169 case R_NDS32_LONGCALL2:
12170 removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs,
12171 &insn_len, contents, isymbuf,
12174 case R_NDS32_LONGCALL3:
12175 removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs,
12176 &insn_len, contents, isymbuf,
12179 case R_NDS32_LONGJUMP1:
12180 removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs,
12181 &insn_len, contents, isymbuf,
12184 case R_NDS32_LONGJUMP2:
12185 removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs,
12186 &insn_len, contents, isymbuf,
12189 case R_NDS32_LONGJUMP3:
12190 removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs,
12191 &insn_len, contents, isymbuf,
12194 case R_NDS32_LONGCALL4:
12195 removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs,
12196 &insn_len, contents, isymbuf,
12199 case R_NDS32_LONGCALL5:
12200 removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs,
12201 &insn_len, contents, isymbuf,
12204 case R_NDS32_LONGCALL6:
12205 removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs,
12206 &insn_len, contents, isymbuf,
12209 case R_NDS32_LONGJUMP4:
12210 removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs,
12211 &insn_len, contents, isymbuf,
12214 case R_NDS32_LONGJUMP5:
12215 removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs,
12216 &insn_len, &seq_len, contents,
12217 isymbuf, symtab_hdr);
12219 case R_NDS32_LONGJUMP6:
12220 removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs,
12221 &insn_len, &seq_len, contents,
12222 isymbuf, symtab_hdr);
12224 case R_NDS32_LONGJUMP7:
12225 removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs,
12226 &insn_len, &seq_len, contents,
12227 isymbuf, symtab_hdr);
12229 case R_NDS32_LOADSTORE:
12230 removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel,
12231 internal_relocs, &insn_len,
12232 contents, isymbuf, symtab_hdr,
12235 case R_NDS32_LO12S0_RELA:
12236 case R_NDS32_LO12S1_RELA:
12237 case R_NDS32_LO12S2_DP_RELA:
12238 case R_NDS32_LO12S2_SP_RELA:
12239 case R_NDS32_LO12S2_RELA:
12240 /* Relax for low part. */
12241 nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs,
12242 contents, isymbuf, symtab_hdr);
12244 /* It is impossible to delete blank, so just continue. */
12246 case R_NDS32_GOT_LO12:
12247 case R_NDS32_GOTOFF_LO12:
12248 case R_NDS32_PLTREL_LO12:
12249 case R_NDS32_PLT_GOTREL_LO12:
12250 case R_NDS32_GOTPC_LO12:
12251 /* Relax for PIC gp-relative low part. */
12252 nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents,
12253 isymbuf, symtab_hdr);
12255 /* It is impossible to delete blank, so just continue. */
12257 case R_NDS32_TLS_LE_LO12:
12258 /* Relax for LE TLS low part. */
12259 nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents,
12260 isymbuf, symtab_hdr);
12262 /* It is impossible to delete blank, so just continue. */
12264 case R_NDS32_TLS_LE_ADD:
12265 nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs,
12266 contents, isymbuf, symtab_hdr, again);
12267 /* It is impossible to delete blank, so just continue. */
12269 case R_NDS32_TLS_LE_LS:
12270 nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs,
12271 contents, isymbuf, symtab_hdr, again);
12274 removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs,
12275 &insn_len, &seq_len, contents);
12277 case R_NDS32_PLT_GOT_SUFF:
12278 nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel,
12279 internal_relocs, contents,
12280 isymbuf, symtab_hdr, again);
12281 /* It is impossible to delete blank, so just continue. */
12283 case R_NDS32_GOT_SUFF:
12284 nds32_elf_relax_got_suff (link_info, abfd, sec, irel,
12285 internal_relocs, contents,
12286 symtab_hdr, again);
12287 /* It is impossible to delete blank, so just continue. */
12289 case R_NDS32_GOTOFF_SUFF:
12290 nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel,
12291 internal_relocs, contents,
12292 isymbuf, symtab_hdr, again);
12293 /* It is impossible to delete blank, so just continue. */
12299 if (removed && seq_len - insn_len > 0)
12301 if (!insert_nds32_elf_blank
12302 (&relax_blank_list, irel->r_offset + insn_len,
12303 seq_len - insn_len))
12309 calc_nds32_blank_total (relax_blank_list);
12311 if (table->relax_fp_as_gp)
12313 if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs,
12317 if (*again == FALSE)
12319 if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs,
12325 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12327 if (*again == FALSE)
12329 if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents,
12330 &relax_blank_list, optimize, opt_size))
12334 /* It doesn't matter optimize_for_space_no_align anymore.
12335 If object file is assembled with flag '-Os',
12336 the we don't adjust jump-destination on 4-byte boundary. */
12338 if (relax_blank_list)
12340 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12341 relax_blank_list = NULL;
12344 if (*again == FALSE)
12346 /* Closing the section, so we don't relax it anymore. */
12347 bfd_vma sec_size_align;
12348 Elf_Internal_Rela *tmp_rel;
12350 /* Pad to alignment boundary. Only handle current section alignment. */
12351 sec_size_align = (sec->size + (~((-1U) << sec->alignment_power)))
12352 & ((-1U) << sec->alignment_power);
12353 if ((sec_size_align - sec->size) & 0x2)
12355 insn16 = NDS32_NOP16;
12356 bfd_putb16 (insn16, contents + sec->size);
12360 while (sec_size_align != sec->size)
12362 insn = NDS32_NOP32;
12363 bfd_putb32 (insn, contents + sec->size);
12367 tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs,
12368 irelend, R_NDS32_RELAX_ENTRY);
12369 if (tmp_rel != irelend)
12370 tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG;
12372 clean_nds32_elf_blank ();
12376 if (internal_relocs != NULL
12377 && elf_section_data (sec)->relocs != internal_relocs)
12378 free (internal_relocs);
12380 if (contents != NULL
12381 && elf_section_data (sec)->this_hdr.contents != contents)
12384 if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf)
12394 static struct bfd_elf_special_section const nds32_elf_special_sections[] =
12396 {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE},
12397 {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE},
12402 nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED,
12403 struct bfd_link_info *info,
12404 void *finfo ATTRIBUTE_UNUSED,
12405 bfd_boolean (*func) (void *, const char *,
12406 Elf_Internal_Sym *,
12408 struct elf_link_hash_entry *)
12411 FILE *sym_ld_script = NULL;
12412 struct elf_nds32_link_hash_table *table;
12414 table = nds32_elf_hash_table (info);
12415 sym_ld_script = table->sym_ld_script;
12417 if (check_start_export_sym)
12418 fprintf (sym_ld_script, "}\n");
12423 static enum elf_reloc_type_class
12424 nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
12425 const asection *rel_sec ATTRIBUTE_UNUSED,
12426 const Elf_Internal_Rela *rela)
12428 switch ((int) ELF32_R_TYPE (rela->r_info))
12430 case R_NDS32_RELATIVE:
12431 return reloc_class_relative;
12432 case R_NDS32_JMP_SLOT:
12433 return reloc_class_plt;
12435 return reloc_class_copy;
12437 return reloc_class_normal;
12441 /* Put target dependent option into info hash table. */
12443 bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info,
12444 int relax_fp_as_gp,
12445 int eliminate_gc_relocs,
12446 FILE * sym_ld_script, int load_store_relax,
12447 int target_optimize, int relax_status,
12448 int relax_round, FILE * ex9_export_file,
12449 FILE * ex9_import_file,
12450 int update_ex9_table, int ex9_limit,
12451 bfd_boolean ex9_loop_aware,
12452 bfd_boolean ifc_loop_aware)
12454 struct elf_nds32_link_hash_table *table;
12456 table = nds32_elf_hash_table (link_info);
12460 table->relax_fp_as_gp = relax_fp_as_gp;
12461 table->eliminate_gc_relocs = eliminate_gc_relocs;
12462 table->sym_ld_script = sym_ld_script;
12463 table ->load_store_relax = load_store_relax;
12464 table->target_optimize = target_optimize;
12465 table->relax_status = relax_status;
12466 table->relax_round = relax_round;
12467 table->ex9_export_file = ex9_export_file;
12468 table->ex9_import_file = ex9_import_file;
12469 table->update_ex9_table = update_ex9_table;
12470 table->ex9_limit = ex9_limit;
12471 table->ex9_loop_aware = ex9_loop_aware;
12472 table->ifc_loop_aware = ifc_loop_aware;
12475 /* These functions and data-structures are used for fp-as-gp
12478 #define FAG_THRESHOLD 3 /* At least 3 gp-access. */
12479 /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between
12480 the read-only section and read-write section. */
12481 #define FAG_WINDOW (508 - 32)
12483 /* An nds32_fag represent a gp-relative access.
12484 We find best fp-base by using a sliding window
12485 to find a base address which can cover most gp-access. */
12488 struct nds32_fag *next; /* NULL-teminated linked list. */
12489 bfd_vma addr; /* The address of this fag. */
12490 Elf_Internal_Rela **relas; /* The relocations associated with this fag.
12491 It is used for applying FP7U2_FLAG. */
12492 int count; /* How many times this address is referred.
12493 There should be exactly `count' relocations
12495 int relas_capcity; /* The buffer size of relas.
12496 We use an array instead of linked-list,
12497 and realloc is used to adjust buffer size. */
12501 nds32_fag_init (struct nds32_fag *head)
12503 memset (head, 0, sizeof (struct nds32_fag));
12507 nds32_fag_verify (struct nds32_fag *head)
12509 struct nds32_fag *iter;
12510 struct nds32_fag *prev;
12516 if (prev && prev->addr >= iter->addr)
12517 puts ("Bug in fp-as-gp insertion.");
12523 /* Insert a fag in ascending order.
12524 If a fag of the same address already exists,
12525 they are chained by relas array. */
12528 nds32_fag_insert (struct nds32_fag *head, bfd_vma addr,
12529 Elf_Internal_Rela * rel)
12531 struct nds32_fag *iter;
12532 struct nds32_fag *new_fag;
12533 const int INIT_RELAS_CAP = 4;
12536 iter->next && iter->next->addr <= addr;
12538 /* Find somewhere to insert. */ ;
12540 /* `iter' will be equal to `head' if the list is empty. */
12541 if (iter != head && iter->addr == addr)
12543 /* The address exists in the list.
12544 Insert `rel' into relocation list, relas. */
12546 /* Check whether relas is big enough. */
12547 if (iter->count >= iter->relas_capcity)
12549 iter->relas_capcity *= 2;
12550 iter->relas = bfd_realloc
12551 (iter->relas, iter->relas_capcity * sizeof (void *));
12553 iter->relas[iter->count++] = rel;
12557 /* This is a new address. Create a fag node for it. */
12558 new_fag = bfd_malloc (sizeof (struct nds32_fag));
12559 memset (new_fag, 0, sizeof (*new_fag));
12560 new_fag->addr = addr;
12561 new_fag->count = 1;
12562 new_fag->next = iter->next;
12563 new_fag->relas_capcity = INIT_RELAS_CAP;
12564 new_fag->relas = (Elf_Internal_Rela **)
12565 bfd_malloc (new_fag->relas_capcity * sizeof (void *));
12566 new_fag->relas[0] = rel;
12567 iter->next = new_fag;
12569 nds32_fag_verify (head);
12573 nds32_fag_free_list (struct nds32_fag *head)
12575 struct nds32_fag *iter;
12580 struct nds32_fag *tmp = iter;
12588 /* Find the best fp-base address.
12589 The relocation associated with that address is returned,
12590 so we can track the symbol instead of a fixed address.
12592 When relaxation, the address of an datum may change,
12593 because a text section is shrinked, so the data section
12594 moves forward. If the aligments of text and data section
12595 are different, their distance may change too.
12596 Therefore, tracking a fixed address is not appriate. */
12599 nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp)
12601 struct nds32_fag *base; /* First fag in the window. */
12602 struct nds32_fag *last; /* First fag outside the window. */
12603 int accu = 0; /* Usage accumulation. */
12604 struct nds32_fag *best; /* Best fag. */
12605 int baccu = 0; /* Best accumulation. */
12607 /* Use first fag for initial, and find the last fag in the window.
12609 In each iteration, we could simply subtract previous fag
12610 and accumulate following fags which are inside the window,
12611 untill we each the end. */
12613 if (head->next == NULL)
12619 /* Initialize base. */
12623 last && last->addr < base->addr + FAG_WINDOW;
12625 accu += last->count;
12629 /* Record the best base in each iteration. */
12632 accu -= base->count;
12634 /* Account fags in window. */
12635 for (/* Nothing. */;
12636 last && last->addr < base->addr + FAG_WINDOW;
12638 accu += last->count;
12640 /* A better fp-base? */
12653 /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses,
12654 so we can convert it fo fp-relative access later.
12655 `best_fag' is the best fp-base. Only those inside the window
12656 of best_fag is applied the flag. */
12659 nds32_fag_mark_relax (struct bfd_link_info *link_info,
12660 bfd *abfd, struct nds32_fag *best_fag,
12661 Elf_Internal_Rela *internal_relocs,
12662 Elf_Internal_Rela *irelend)
12664 struct nds32_fag *ifag;
12665 bfd_vma best_fpbase, gp;
12668 output_bfd = abfd->sections->output_section->owner;
12669 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
12670 best_fpbase = best_fag->addr;
12672 if (best_fpbase > gp + sdata_range[1][1]
12673 || best_fpbase < gp - sdata_range[1][0])
12676 /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag,
12677 so we know they can be converted to lwi37.fp. */
12678 for (ifag = best_fag;
12679 ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next)
12683 for (i = 0; i < ifag->count; i++)
12685 Elf_Internal_Rela *insn16_rel;
12686 Elf_Internal_Rela *fag_rel;
12688 fag_rel = ifag->relas[i];
12690 /* Only if this is within the WINDOWS, FP7U2_FLAG
12693 insn16_rel = find_relocs_at_address
12694 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12696 if (insn16_rel != irelend)
12697 insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG;
12703 /* Reset INSN16 to clean fp as gp. */
12706 nds32_fag_unmark_relax (struct nds32_fag *fag,
12707 Elf_Internal_Rela *internal_relocs,
12708 Elf_Internal_Rela *irelend)
12710 struct nds32_fag *ifag;
12712 Elf_Internal_Rela *insn16_rel;
12713 Elf_Internal_Rela *fag_rel;
12715 for (ifag = fag; ifag; ifag = ifag->next)
12717 for (i = 0; i < ifag->count; i++)
12719 fag_rel = ifag->relas[i];
12721 /* Restore the INSN16 relocation. */
12722 insn16_rel = find_relocs_at_address
12723 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12725 if (insn16_rel != irelend)
12726 insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG;
12731 /* This is the main function of fp-as-gp optimization.
12732 It should be called by relax_section. */
12735 nds32_relax_fp_as_gp (struct bfd_link_info *link_info,
12736 bfd *abfd, asection *sec,
12737 Elf_Internal_Rela *internal_relocs,
12738 Elf_Internal_Rela *irelend,
12739 Elf_Internal_Sym *isymbuf)
12741 Elf_Internal_Rela *begin_rel = NULL;
12742 Elf_Internal_Rela *irel;
12743 struct nds32_fag fag_head;
12744 Elf_Internal_Shdr *symtab_hdr;
12745 bfd_byte *contents;
12746 bfd_boolean ifc_inside = FALSE;
12748 /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */
12750 /* Per-function fp-base selection.
12751 1. Create a list for all the gp-relative access.
12752 2. Base on those gp-relative address,
12753 find a fp-base which can cover most access.
12754 3. Use the fp-base for fp-as-gp relaxation.
12756 NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times),
12758 1. delete the `la $fp, _FP_BASE_' instruction and
12759 2. not convert lwi.gp to lwi37.fp.
12761 To delete the _FP_BASE_ instruction, we simply apply
12762 R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it.
12764 To suppress the conversion, we simply NOT to apply
12765 R_NDS32_INSN16_FP7U2_FLAG flag. */
12767 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12769 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12770 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12773 /* Check whether it is worth for fp-as-gp optimization,
12774 i.e., at least 3 gp-load.
12776 Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT
12777 apply this optimization. */
12779 for (irel = internal_relocs; irel < irelend; irel++)
12781 /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region.
12782 One we enter the begin of the region, we track all the LW/ST
12783 instructions, so when we leave the region, we try to find
12784 the best fp-base address for those LW/ST instructions. */
12786 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12787 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12789 /* Begin of the region. */
12791 _bfd_error_handler (_("%B: Nested OMIT_FP in %A."), abfd, sec);
12794 nds32_fag_init (&fag_head);
12795 ifc_inside = FALSE;
12797 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12798 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12801 struct nds32_fag *best_fag, *tmp_fag;
12804 /* End of the region.
12805 Check whether it is worth to do fp-as-gp. */
12807 if (begin_rel == NULL)
12809 _bfd_error_handler (_("%B: Unmatched OMIT_FP in %A."), abfd, sec);
12813 accu = nds32_fag_find_base (&fag_head, &best_fag);
12815 /* Clean FP7U2_FLAG because they may set ever. */
12816 tmp_fag = fag_head.next;
12817 nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend);
12819 /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */
12820 if (accu < FAG_THRESHOLD
12821 || !nds32_fag_mark_relax (link_info, abfd, best_fag,
12822 internal_relocs, irelend))
12824 /* Not worth to do fp-as-gp. */
12825 begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12826 begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12827 irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12828 irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12829 nds32_fag_free_list (&fag_head);
12834 /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler,
12835 so we use it to record the distance to the reloction of best
12837 dist = best_fag->relas[0] - begin_rel;
12838 BFD_ASSERT (dist > 0 && dist < 0xffffff);
12839 /* Use high 16 bits of addend to record the _FP_BASE_ matched
12840 relocation. And get the base value when relocating. */
12841 begin_rel->r_addend &= (0x1 << 16) - 1;
12842 begin_rel->r_addend |= dist << 16;
12844 nds32_fag_free_list (&fag_head);
12848 if (begin_rel == NULL || ifc_inside)
12849 /* Skip if we are not in the region of fp-as-gp. */
12852 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA
12853 || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA)
12858 /* A gp-relative access is found. Insert it to the fag-list. */
12860 /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */
12861 insn = bfd_getb32 (contents + irel->r_offset);
12862 if (!N32_IS_RT3 (insn))
12865 addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
12866 nds32_fag_insert (&fag_head, addr, irel);
12868 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA)
12872 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12873 || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
12875 /* Suppress fp as gp when encounter ifc. */
12883 /* Remove unused `la $fp, _FD_BASE_' instruction. */
12886 nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec,
12887 Elf_Internal_Rela *internal_relocs,
12888 Elf_Internal_Rela *irelend)
12890 Elf_Internal_Rela *irel;
12891 Elf_Internal_Shdr *symtab_hdr;
12892 bfd_byte *contents = NULL;
12893 nds32_elf_blank_t *relax_blank_list = NULL;
12894 bfd_boolean result = TRUE;
12895 bfd_boolean unused_region = FALSE;
12898 NOTE: Disable fp-as-gp if we encounter ifcall relocations.
12899 * R_NDS32_17IFC_PCREL_RELA
12900 * R_NDS32_10IFCU_PCREL_RELA
12905 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12906 nds32_get_section_contents (abfd, sec, &contents, TRUE);
12908 for (irel = internal_relocs; irel < irelend; irel++)
12910 /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP
12911 we marked to in previous pass.
12912 DO NOT scan relocations again, since we've alreadly decided it
12913 and set the flag. */
12914 const char *syname;
12918 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12919 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12920 unused_region = TRUE;
12921 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12922 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12923 unused_region = FALSE;
12925 /* We're not in the region. */
12926 if (!unused_region)
12929 /* _FP_BASE_ must be a GLOBAL symbol. */
12930 syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
12931 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
12934 /* The symbol name must be _FP_BASE_. */
12935 syname = elf_sym_hashes (abfd)[syndx]->root.root.string;
12936 if (strcmp (syname, FP_BASE_NAME) != 0)
12939 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA)
12941 /* addi.gp $fp, -256 */
12942 insn = bfd_getb32 (contents + irel->r_offset);
12943 if (insn != INSN_ADDIGP_TO_FP)
12946 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA)
12948 /* addi $fp, $gp, -256 */
12949 insn = bfd_getb32 (contents + irel->r_offset);
12950 if (insn != INSN_ADDI_GP_TO_FP)
12953 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA)
12955 /* movi $fp, FP_BASE */
12956 insn = bfd_getb32 (contents + irel->r_offset);
12957 if (insn != INSN_MOVI_TO_FP)
12963 /* We got here because a FP_BASE instruction is found. */
12964 if (!insert_nds32_elf_blank_recalc_total
12965 (&relax_blank_list, irel->r_offset, 4))
12970 if (relax_blank_list)
12972 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12973 relax_blank_list = NULL;
12982 /* This is a version of bfd_generic_get_relocated_section_contents.
12983 We need this variety because relaxation will modify the dwarf
12984 infomation. When there is undefined symbol reference error mesage,
12985 linker need to dump line number where the symbol be used. However
12986 the address is be relaxed, it can not get the original dwarf contents.
12987 The variety only modify function call for reading in the section. */
12990 nds32_elf_get_relocated_section_contents (bfd *abfd,
12991 struct bfd_link_info *link_info,
12992 struct bfd_link_order *link_order,
12994 bfd_boolean relocatable,
12997 bfd *input_bfd = link_order->u.indirect.section->owner;
12998 asection *input_section = link_order->u.indirect.section;
13000 arelent **reloc_vector;
13003 reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
13004 if (reloc_size < 0)
13007 /* Read in the section. */
13008 if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE))
13011 if (reloc_size == 0)
13014 reloc_vector = (arelent **) bfd_malloc (reloc_size);
13015 if (reloc_vector == NULL)
13018 reloc_count = bfd_canonicalize_reloc (input_bfd, input_section,
13019 reloc_vector, symbols);
13020 if (reloc_count < 0)
13023 if (reloc_count > 0)
13026 for (parent = reloc_vector; *parent != NULL; parent++)
13028 char *error_message = NULL;
13030 bfd_reloc_status_type r;
13032 symbol = *(*parent)->sym_ptr_ptr;
13033 if (symbol->section && discarded_section (symbol->section))
13036 static reloc_howto_type none_howto
13037 = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL,
13038 "unused", FALSE, 0, 0, FALSE);
13040 p = data + (*parent)->address * bfd_octets_per_byte (input_bfd);
13041 _bfd_clear_contents ((*parent)->howto, input_bfd, input_section,
13043 (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
13044 (*parent)->addend = 0;
13045 (*parent)->howto = &none_howto;
13049 r = bfd_perform_relocation (input_bfd, *parent, data,
13051 relocatable ? abfd : NULL,
13056 asection *os = input_section->output_section;
13058 /* A partial link, so keep the relocs. */
13059 os->orelocation[os->reloc_count] = *parent;
13063 if (r != bfd_reloc_ok)
13067 case bfd_reloc_undefined:
13068 (*link_info->callbacks->undefined_symbol)
13069 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13070 input_bfd, input_section, (*parent)->address, TRUE);
13072 case bfd_reloc_dangerous:
13073 BFD_ASSERT (error_message != NULL);
13074 (*link_info->callbacks->reloc_dangerous)
13075 (link_info, error_message,
13076 input_bfd, input_section, (*parent)->address);
13078 case bfd_reloc_overflow:
13079 (*link_info->callbacks->reloc_overflow)
13081 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13082 (*parent)->howto->name, (*parent)->addend,
13083 input_bfd, input_section, (*parent)->address);
13085 case bfd_reloc_outofrange:
13087 This error can result when processing some partially
13088 complete binaries. Do not abort, but issue an error
13089 message instead. */
13090 link_info->callbacks->einfo
13091 (_("%X%P: %B(%A): relocation \"%R\" goes out of range\n"),
13092 abfd, input_section, * parent);
13103 free (reloc_vector);
13107 free (reloc_vector);
13111 /* Link-time IFC relaxation.
13112 In this optimization, we chains jump instructions
13113 of the same destination with ifcall. */
13116 /* List to save jal and j relocation. */
13117 struct elf_nds32_ifc_symbol_entry
13120 struct elf_link_hash_entry *h;
13121 struct elf_nds32_ifc_irel_list *irel_head;
13122 unsigned long insn;
13124 int enable; /* Apply ifc. */
13125 int ex9_enable; /* Apply ifc after ex9. */
13126 struct elf_nds32_ifc_symbol_entry *next;
13129 struct elf_nds32_ifc_irel_list
13131 Elf_Internal_Rela *irel;
13134 /* If this is set, then it is the last instruction for
13135 ifc-chain, so it must be keep for the actual branching. */
13137 struct elf_nds32_ifc_irel_list *next;
13140 static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL;
13142 /* Insert symbol of jal and j for ifc. */
13145 nds32_elf_ifc_insert_symbol (asection *sec,
13146 struct elf_link_hash_entry *h,
13147 Elf_Internal_Rela *irel,
13148 unsigned long insn)
13150 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13152 /* Check there is target of existing entry the same as the new one. */
13153 while (ptr != NULL)
13155 if (((h == NULL && ptr->sec == sec
13156 && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info)
13157 && ptr->irel_head->irel->r_addend == irel->r_addend)
13160 && ptr->insn == insn)
13162 /* The same target exist, so insert into list. */
13163 struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head;
13165 while (irel_list->next != NULL)
13166 irel_list = irel_list->next;
13167 irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
13168 irel_list = irel_list->next;
13169 irel_list->irel = irel;
13170 irel_list->keep = 1;
13173 irel_list->sec = NULL;
13175 irel_list->sec = sec;
13176 irel_list->next = NULL;
13179 if (ptr->next == NULL)
13184 /* There is no same target entry, so build a new one. */
13185 if (ifc_symbol_head == NULL)
13187 ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
13188 ptr = ifc_symbol_head;
13192 ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
13197 ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
13198 ptr->irel_head->irel = irel;
13200 ptr->irel_head->keep = 1;
13204 /* Local symbols. */
13206 ptr->irel_head->sec = NULL;
13210 /* Global symbol. */
13212 ptr->irel_head->sec = sec;
13215 ptr->irel_head->next = NULL;
13218 ptr->ex9_enable = 0;
13222 /* Gather all jal and j instructions. */
13225 nds32_elf_ifc_calc (struct bfd_link_info *info,
13226 bfd *abfd, asection *sec)
13228 Elf_Internal_Rela *internal_relocs;
13229 Elf_Internal_Rela *irelend;
13230 Elf_Internal_Rela *irel;
13231 Elf_Internal_Shdr *symtab_hdr;
13232 bfd_byte *contents = NULL;
13233 uint32_t insn, insn_with_reg;
13234 unsigned long r_symndx;
13235 struct elf_link_hash_entry *h;
13236 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
13237 struct elf_nds32_link_hash_table *table;
13238 bfd_boolean ifc_loop_aware;
13240 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
13241 TRUE /* keep_memory */);
13242 irelend = internal_relocs + sec->reloc_count;
13243 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
13245 /* Check if the object enable ifc. */
13246 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
13247 R_NDS32_RELAX_ENTRY);
13251 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
13252 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
13253 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG)))
13256 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
13259 table = nds32_elf_hash_table (info);
13260 ifc_loop_aware = table->ifc_loop_aware;
13261 while (irel != NULL && irel < irelend)
13263 /* Traverse all relocation and gather all of them to build the list. */
13265 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN)
13267 if (ifc_loop_aware == 1
13268 && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)
13270 /* Check the region if loop or not. If it is true and
13271 ifc-loop-aware is true, ignore the region till region end. */
13272 while (irel != NULL
13274 && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
13275 || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0))
13280 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
13282 insn = bfd_getb32 (contents + irel->r_offset);
13283 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
13284 r_symndx = ELF32_R_SYM (irel->r_info);
13285 if (r_symndx < symtab_hdr->sh_info)
13287 /* Local symbol. */
13288 nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg);
13292 /* External symbol. */
13293 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
13294 nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg);
13302 /* Determine whether j and jal should be substituted. */
13305 nds32_elf_ifc_filter (struct bfd_link_info *info)
13307 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13308 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13309 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13310 struct elf_nds32_link_hash_table *table;
13311 int target_optimize;
13314 table = nds32_elf_hash_table (info);
13315 target_optimize = table->target_optimize;
13318 irel_ptr = ptr->irel_head;
13319 if (ptr->h == NULL)
13321 /* Local symbol. */
13322 irel_keeper = irel_ptr;
13323 while (irel_ptr && irel_ptr->next)
13325 /* Check there is jump target can be used. */
13326 if ((irel_ptr->next->irel->r_offset
13327 - irel_keeper->irel->r_offset) > 1022)
13328 irel_keeper = irel_ptr->next;
13332 irel_ptr->keep = 0;
13334 irel_ptr = irel_ptr->next;
13339 /* Global symbol. */
13340 /* We have to get the absolute address and decide
13341 whether to keep it or not. */
13344 address = (irel_ptr->irel->r_offset
13345 + irel_ptr->sec->output_section->vma
13346 + irel_ptr->sec->output_offset);
13347 irel_ptr->addr = address;
13348 irel_ptr = irel_ptr->next;
13351 irel_ptr = ptr->irel_head;
13354 /* Sort by address. */
13355 struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr;
13356 struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr;
13357 struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL;
13358 struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL;
13360 /* Get the smallest one. */
13361 while (irel_temp->next)
13363 if (irel_temp->next->addr < irel_dest->addr)
13365 irel_dest_prev = irel_temp;
13366 irel_dest = irel_temp->next;
13368 irel_temp = irel_temp->next;
13371 if (irel_dest != irel_ptr)
13374 irel_ptr_prev->next = irel_dest;
13375 if (irel_dest_prev)
13376 irel_dest_prev->next = irel_ptr;
13377 irel_temp = irel_ptr->next;
13378 irel_ptr->next = irel_dest->next;
13379 irel_dest->next = irel_temp;
13381 irel_ptr_prev = irel_ptr;
13382 irel_ptr = irel_ptr->next;
13385 irel_ptr = ptr->irel_head;
13386 irel_keeper = irel_ptr;
13387 while (irel_ptr && irel_ptr->next)
13389 if ((irel_ptr->next->addr - irel_keeper->addr) > 1022)
13390 irel_keeper = irel_ptr->next;
13394 irel_ptr->keep = 0;
13396 irel_ptr = irel_ptr->next;
13400 /* Ex9 enable. Reserve it for ex9. */
13401 if ((target_optimize & NDS32_RELAX_EX9_ON)
13402 && ptr->irel_head != irel_keeper)
13408 /* Determine whether j and jal should be substituted after ex9 done. */
13411 nds32_elf_ifc_filter_after_ex9 (void)
13413 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13414 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13418 if (ptr->enable == 0)
13420 /* Check whether ifc is applied or not. */
13421 irel_ptr = ptr->irel_head;
13422 ptr->ex9_enable = 1;
13425 if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN)
13428 ptr->ex9_enable = 0;
13431 irel_ptr = irel_ptr->next;
13438 /* Wrapper to do ifc relaxation. */
13441 nds32_elf_ifc_finish (struct bfd_link_info *info)
13444 struct elf_nds32_link_hash_table *table;
13446 table = nds32_elf_hash_table (info);
13447 relax_status = table->relax_status;
13449 if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE))
13450 nds32_elf_ifc_filter (info);
13452 nds32_elf_ifc_filter_after_ex9 ();
13454 if (!nds32_elf_ifc_replace (info))
13458 table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE;
13462 /* Traverse the result of ifc filter and replace it with ifcall9. */
13465 nds32_elf_ifc_replace (struct bfd_link_info *info)
13467 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13468 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13469 nds32_elf_blank_t *relax_blank_list = NULL;
13470 bfd_byte *contents = NULL;
13471 Elf_Internal_Rela *internal_relocs;
13472 Elf_Internal_Rela *irel;
13473 Elf_Internal_Rela *irelend;
13474 unsigned short insn16 = INSN_IFCALL9;
13475 struct elf_nds32_link_hash_table *table;
13478 table = nds32_elf_hash_table (info);
13479 relax_status = table->relax_status;
13483 /* Traverse the ifc gather list, and replace the
13484 filter entries by ifcall9. */
13485 if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1)
13486 || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE)
13487 && ptr->ex9_enable == 1))
13489 irel_ptr = ptr->irel_head;
13490 if (ptr->h == NULL)
13492 /* Local symbol. */
13493 internal_relocs = _bfd_elf_link_read_relocs
13494 (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */);
13495 irelend = internal_relocs + ptr->sec->reloc_count;
13497 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13503 if (irel_ptr->keep == 0 && irel_ptr->next)
13505 /* The one can be replaced. We have to check whether
13506 there is any alignment point in the region. */
13507 irel = irel_ptr->irel;
13508 while (((irel_ptr->next->keep == 0
13509 && irel < irel_ptr->next->irel)
13510 || (irel_ptr->next->keep == 1 && irel < irelend))
13511 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13512 && (irel->r_addend & 0x1f) == 2))
13514 if (irel >= irelend
13515 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13516 && (irel->r_addend & 0x1f) == 2
13517 && ((irel->r_offset - get_nds32_elf_blank_total
13518 (&relax_blank_list, irel->r_offset, 1))
13521 /* Replace by ifcall9. */
13522 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13523 if (!insert_nds32_elf_blank_recalc_total
13524 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13526 irel_ptr->irel->r_info =
13527 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13528 R_NDS32_10IFCU_PCREL_RELA);
13531 irel_ptr = irel_ptr->next;
13534 /* Delete the redundant code. */
13535 if (relax_blank_list)
13537 nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec,
13539 relax_blank_list = NULL;
13544 /* Global symbol. */
13547 if (irel_ptr->keep == 0 && irel_ptr->next)
13549 /* The one can be replaced, and we have to check
13550 whether there is any alignment point in the region. */
13551 internal_relocs = _bfd_elf_link_read_relocs
13552 (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL,
13553 TRUE /* keep_memory */);
13554 irelend = internal_relocs + irel_ptr->sec->reloc_count;
13555 if (!nds32_get_section_contents (irel_ptr->sec->owner,
13556 irel_ptr->sec, &contents,
13560 irel = irel_ptr->irel;
13561 while (((irel_ptr->sec == irel_ptr->next->sec
13562 && irel_ptr->next->keep == 0
13563 && irel < irel_ptr->next->irel)
13564 || ((irel_ptr->sec != irel_ptr->next->sec
13565 || irel_ptr->next->keep == 1)
13566 && irel < irelend))
13567 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13568 && (irel->r_addend & 0x1f) == 2))
13570 if (irel >= irelend
13571 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13572 && (irel->r_addend & 0x1f) == 2
13573 && ((irel->r_offset
13574 - get_nds32_elf_blank_total (&relax_blank_list,
13575 irel->r_offset, 1)) & 0x02) == 0))
13577 /* Replace by ifcall9. */
13578 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13579 if (!insert_nds32_elf_blank_recalc_total
13580 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13583 /* Delete the redundant code, and clear the relocation. */
13584 nds32_elf_relax_delete_blanks (irel_ptr->sec->owner,
13587 irel_ptr->irel->r_info =
13588 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13589 R_NDS32_10IFCU_PCREL_RELA);
13590 relax_blank_list = NULL;
13594 irel_ptr = irel_ptr->next;
13604 /* Relocate ifcall. */
13607 nds32_elf_ifc_reloc (void)
13609 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13610 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13611 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13612 bfd_vma relocation, address;
13613 unsigned short insn16;
13614 bfd_byte *contents = NULL;
13615 static bfd_boolean done = FALSE;
13624 /* Check the entry is enable ifcall. */
13625 if (ptr->enable == 1 || ptr->ex9_enable == 1)
13627 /* Get the reserve jump. */
13628 irel_ptr = ptr->irel_head;
13631 if (irel_ptr->keep == 1)
13633 irel_keeper = irel_ptr;
13636 irel_ptr = irel_ptr->next;
13639 irel_ptr = ptr->irel_head;
13640 if (ptr->h == NULL)
13642 /* Local symbol. */
13643 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13649 if (irel_ptr->keep == 0
13650 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13652 relocation = irel_keeper->irel->r_offset;
13653 relocation = relocation - irel_ptr->irel->r_offset;
13654 while (irel_keeper && relocation > 1022)
13656 irel_keeper = irel_keeper->next;
13657 if (irel_keeper && irel_keeper->keep == 1)
13659 relocation = irel_keeper->irel->r_offset;
13660 relocation = relocation - irel_ptr->irel->r_offset;
13663 if (relocation > 1022)
13665 /* Double check. */
13666 irel_keeper = ptr->irel_head;
13667 while (irel_keeper)
13669 if (irel_keeper->keep == 1)
13671 relocation = irel_keeper->irel->r_offset;
13672 relocation = relocation - irel_ptr->irel->r_offset;
13674 if (relocation <= 1022)
13676 irel_keeper = irel_keeper->next;
13681 irel_ptr->irel->r_info =
13682 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13684 insn16 = INSN_IFCALL9 | (relocation >> 1);
13685 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13687 irel_ptr = irel_ptr->next;
13692 /* Global symbol. */
13695 if (irel_ptr->keep == 0
13696 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13698 /* Get the distance between ifcall and jump. */
13699 relocation = (irel_keeper->irel->r_offset
13700 + irel_keeper->sec->output_section->vma
13701 + irel_keeper->sec->output_offset);
13702 address = (irel_ptr->irel->r_offset
13703 + irel_ptr->sec->output_section->vma
13704 + irel_ptr->sec->output_offset);
13705 relocation = relocation - address;
13707 /* The distance is over ragne, find callee again. */
13708 while (irel_keeper && relocation > 1022)
13710 irel_keeper = irel_keeper->next;
13711 if (irel_keeper && irel_keeper->keep ==1)
13713 relocation = (irel_keeper->irel->r_offset
13714 + irel_keeper->sec->output_section->vma
13715 + irel_keeper->sec->output_offset);
13716 relocation = relocation - address;
13720 if (relocation > 1022)
13722 /* Double check. */
13723 irel_keeper = ptr->irel_head;
13724 while (irel_keeper)
13726 if (irel_keeper->keep == 1)
13729 relocation = (irel_keeper->irel->r_offset
13730 + irel_keeper->sec->output_section->vma
13731 + irel_keeper->sec->output_offset);
13732 relocation = relocation - address;
13734 if (relocation <= 1022)
13736 irel_keeper = irel_keeper->next;
13741 if (!nds32_get_section_contents
13742 (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE))
13744 insn16 = INSN_IFCALL9 | (relocation >> 1);
13745 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13746 irel_ptr->irel->r_info =
13747 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13750 irel_ptr =irel_ptr->next;
13760 /* End of IFC relaxation. */
13762 /* EX9 Instruction Table Relaxation. */
13764 /* Global hash list. */
13765 struct elf_link_hash_entry_list
13767 struct elf_link_hash_entry *h;
13768 struct elf_link_hash_entry_list *next;
13771 /* Save different destination but same insn. */
13772 struct elf_link_hash_entry_mul_list
13774 /* Global symbol times. */
13776 /* Save relocation for each global symbol but useful?? */
13777 Elf_Internal_Rela *irel;
13778 /* For sethi, two sethi may have the same high-part but different low-parts. */
13779 Elf_Internal_Rela rel_backup;
13780 struct elf_link_hash_entry_list *h_list;
13781 struct elf_link_hash_entry_mul_list *next;
13784 /* Instruction hash table. */
13785 struct elf_nds32_code_hash_entry
13787 struct bfd_hash_entry root;
13789 /* For insn that can use relocation or constant ex: sethi. */
13792 struct elf_link_hash_entry_mul_list *m_list;
13793 /* Using r_addend. */
13794 Elf_Internal_Rela *irel;
13795 /* Using r_info. */
13796 Elf_Internal_Rela rel_backup;
13799 /* Instruction count list. */
13800 struct elf_nds32_insn_times_entry
13802 const char *string;
13806 struct elf_link_hash_entry_mul_list *m_list;
13807 Elf_Internal_Rela *irel;
13808 Elf_Internal_Rela rel_backup;
13809 struct elf_nds32_insn_times_entry *next;
13812 /* J and JAL symbol list. */
13813 struct elf_nds32_symbol_entry
13816 unsigned long insn;
13817 struct elf_nds32_symbol_entry *next;
13820 /* Relocation list. */
13821 struct elf_nds32_irel_entry
13823 Elf_Internal_Rela *irel;
13824 struct elf_nds32_irel_entry *next;
13827 /* ex9.it insn need to be fixed. */
13828 struct elf_nds32_ex9_refix
13830 Elf_Internal_Rela *irel;
13832 struct elf_link_hash_entry *h;
13834 struct elf_nds32_ex9_refix *next;
13837 static struct bfd_hash_table ex9_code_table;
13838 static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL;
13839 static struct elf_nds32_ex9_refix *ex9_refix_head = NULL;
13841 /* EX9 hash function. */
13843 static struct bfd_hash_entry *
13844 nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry,
13845 struct bfd_hash_table *table,
13846 const char *string)
13848 struct elf_nds32_code_hash_entry *ret;
13850 /* Allocate the structure if it has not already been allocated by a
13854 entry = (struct bfd_hash_entry *)
13855 bfd_hash_allocate (table, sizeof (*ret));
13860 /* Call the allocation method of the superclass. */
13861 entry = bfd_hash_newfunc (entry, table, string);
13865 ret = (struct elf_nds32_code_hash_entry*) entry;
13867 ret->const_insn = 0;
13868 ret->m_list = NULL;
13874 /* Insert ex9 entry
13875 this insert must be stable sorted by times. */
13878 nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr)
13880 struct elf_nds32_insn_times_entry *temp;
13881 struct elf_nds32_insn_times_entry *temp2;
13883 if (ex9_insn_head == NULL)
13885 ex9_insn_head = ptr;
13890 temp = ex9_insn_head;
13891 temp2 = ex9_insn_head;
13892 while (temp->next &&
13893 (temp->next->times >= ptr->times
13894 || temp->times == -1))
13896 if (temp->times == -1)
13900 if (ptr->times > temp->times && temp->times != -1)
13903 if (temp2->times == -1)
13906 ex9_insn_head = ptr;
13908 else if (temp->next == NULL)
13915 ptr->next = temp->next;
13921 /* Examine each insn times in hash table.
13922 Handle multi-link hash entry.
13924 TODO: This function doesn't assign so much info since it is fake. */
13927 nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h)
13929 struct elf_nds32_insn_times_entry *ptr;
13932 if (h->m_list == NULL)
13934 /* Local symbol insn or insn without relocation. */
13938 ptr = (struct elf_nds32_insn_times_entry *)
13939 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13940 ptr->times = h->times;
13941 ptr->string = h->root.string;
13942 ptr->m_list = NULL;
13944 ptr->irel = h->irel;
13945 ptr->rel_backup = h->rel_backup;
13946 nds32_elf_ex9_insert_entry (ptr);
13950 /* Global symbol insn. */
13951 /* Only sethi insn has multiple m_list. */
13952 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
13957 times += m_list->times;
13958 m_list = m_list->next;
13962 m_list = h->m_list;
13963 ptr = (struct elf_nds32_insn_times_entry *)
13964 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13965 ptr->times = times; /* Use the total times. */
13966 ptr->string = h->root.string;
13967 ptr->m_list = m_list;
13969 ptr->irel = m_list->irel;
13970 ptr->rel_backup = m_list->rel_backup;
13971 nds32_elf_ex9_insert_entry (ptr);
13973 if (h->const_insn == 1)
13975 /* sethi with constant value. */
13979 ptr = (struct elf_nds32_insn_times_entry *)
13980 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13981 ptr->times = h->times;
13982 ptr->string = h->root.string;
13983 ptr->m_list = NULL;
13986 ptr->rel_backup = h->rel_backup;
13987 nds32_elf_ex9_insert_entry (ptr);
13993 /* Count each insn times in hash table.
13994 Handle multi-link hash entry. */
13997 nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h)
13999 int reservation, times;
14000 unsigned long relocation, min_relocation;
14001 struct elf_nds32_insn_times_entry *ptr;
14003 if (h->m_list == NULL)
14005 /* Local symbol insn or insn without relocation. */
14008 ptr = (struct elf_nds32_insn_times_entry *)
14009 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14010 ptr->times = h->times;
14011 ptr->string = h->root.string;
14012 ptr->m_list = NULL;
14014 ptr->irel = h->irel;
14015 ptr->rel_backup = h->rel_backup;
14016 nds32_elf_ex9_insert_entry (ptr);
14020 /* Global symbol insn. */
14021 /* Only sethi insn has multiple m_list. */
14022 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
14024 if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA
14025 && m_list->next != NULL)
14027 /* Sethi insn has different symbol or addend but has same hi20. */
14031 min_relocation = 0xffffffff;
14034 /* Get the minimum sethi address
14035 and calculate how many entry the sethi-list have to use. */
14036 if ((m_list->h_list->h->root.type == bfd_link_hash_defined
14037 || m_list->h_list->h->root.type == bfd_link_hash_defweak)
14038 && (m_list->h_list->h->root.u.def.section != NULL
14039 && m_list->h_list->h->root.u.def.section->output_section != NULL))
14041 relocation = (m_list->h_list->h->root.u.def.value +
14042 m_list->h_list->h->root.u.def.section->output_section->vma +
14043 m_list->h_list->h->root.u.def.section->output_offset);
14044 relocation += m_list->irel->r_addend;
14048 if (relocation < min_relocation)
14049 min_relocation = relocation;
14050 times += m_list->times;
14051 m_list = m_list->next;
14053 if (min_relocation < ex9_relax_size)
14054 reservation = (min_relocation >> 12) + 1;
14056 reservation = (min_relocation >> 12)
14057 - ((min_relocation - ex9_relax_size) >> 12) + 1;
14058 if (reservation < (times / 3))
14060 /* Efficient enough to use ex9. */
14063 for (i = reservation ; i > 0; i--)
14065 /* Allocate number of reservation ex9 entry. */
14066 ptr = (struct elf_nds32_insn_times_entry *)
14067 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14068 ptr->times = h->m_list->times / reservation;
14069 ptr->string = h->root.string;
14070 ptr->m_list = h->m_list;
14072 ptr->irel = h->m_list->irel;
14073 ptr->rel_backup = h->m_list->rel_backup;
14074 nds32_elf_ex9_insert_entry (ptr);
14080 /* Normal global symbol that means no different address symbol
14081 using same ex9 entry. */
14082 if (m_list->times >= 3)
14084 ptr = (struct elf_nds32_insn_times_entry *)
14085 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14086 ptr->times = m_list->times;
14087 ptr->string = h->root.string;
14088 ptr->m_list = h->m_list;
14090 ptr->irel = h->m_list->irel;
14091 ptr->rel_backup = h->m_list->rel_backup;
14092 nds32_elf_ex9_insert_entry (ptr);
14096 if (h->const_insn == 1)
14098 /* sethi with constant value. */
14102 ptr = (struct elf_nds32_insn_times_entry *)
14103 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14104 ptr->times = h->times;
14105 ptr->string = h->root.string;
14106 ptr->m_list = NULL;
14109 ptr->rel_backup = h->rel_backup;
14110 nds32_elf_ex9_insert_entry (ptr);
14117 /* Hash table traverse function. */
14120 nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*))
14124 ex9_code_table.frozen = 1;
14125 for (i = 0; i < ex9_code_table.size; i++)
14127 struct bfd_hash_entry *p;
14129 for (p = ex9_code_table.table[i]; p != NULL; p = p->next)
14130 if (!func ((struct elf_nds32_code_hash_entry *) p))
14134 ex9_code_table.frozen = 0;
14138 /* Give order number to insn list. */
14141 nds32_elf_order_insn_times (struct bfd_link_info *info)
14143 struct elf_nds32_insn_times_entry *ex9_insn;
14144 struct elf_nds32_insn_times_entry *temp = NULL;
14145 struct elf_nds32_link_hash_table *table;
14149 if (ex9_insn_head == NULL)
14152 /* The max number of entries is 512. */
14153 ex9_insn = ex9_insn_head;
14154 table = nds32_elf_hash_table (info);
14155 ex9_limit = table->ex9_limit;
14157 ex9_insn = ex9_insn_head;
14159 while (ex9_insn != NULL && number < ex9_limit)
14161 ex9_insn->order = number;
14164 ex9_insn = ex9_insn->next;
14167 if (ex9_insn && temp)
14170 while (ex9_insn != NULL)
14172 /* Free useless entry. */
14174 ex9_insn = ex9_insn->next;
14179 /* Build .ex9.itable section. */
14182 nds32_elf_ex9_build_itable (struct bfd_link_info *link_info)
14184 asection *table_sec;
14185 struct elf_nds32_insn_times_entry *ptr;
14188 bfd_byte *contents = NULL;
14190 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
14191 it_abfd = it_abfd->link.next)
14193 /* Find the section .ex9.itable, and put all entries into it. */
14194 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
14195 if (table_sec != NULL)
14197 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
14200 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
14203 table_sec->size = number * 4;
14208 elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST;
14210 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
14214 val = strtol (ptr->string, NULL, 16);
14215 bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4));
14223 /* Get insn with regs according to relocation type. */
14226 nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel,
14227 uint32_t insn, uint32_t *insn_with_reg)
14229 reloc_howto_type *howto = NULL;
14232 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
14233 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
14234 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
14236 *insn_with_reg = insn;
14240 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
14241 *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask);
14244 /* Mask number of address bits according to relocation. */
14246 static unsigned long
14247 nds32_elf_irel_mask (Elf_Internal_Rela *irel)
14249 reloc_howto_type *howto = NULL;
14252 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
14253 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
14254 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
14257 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
14258 return howto->dst_mask;
14262 nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list,
14263 struct elf_nds32_irel_entry *irel_ptr)
14265 if (*irel_list == NULL)
14267 *irel_list = irel_ptr;
14268 irel_ptr->next = NULL;
14272 irel_ptr->next = *irel_list;
14273 *irel_list = irel_ptr;
14278 nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel,
14279 struct elf_link_hash_entry *h, int order)
14281 struct elf_nds32_ex9_refix *ptr;
14283 ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix));
14287 ptr->order = order;
14290 if (ex9_refix_head == NULL)
14291 ex9_refix_head = ptr;
14294 struct elf_nds32_ex9_refix *temp = ex9_refix_head;
14296 while (temp->next != NULL)
14305 CLEAN_PRE = 1 << 1,
14309 /* Check relocation type if supporting for ex9. */
14312 nds32_elf_ex9_relocation_check (struct bfd_link_info *info,
14313 Elf_Internal_Rela **irel,
14314 Elf_Internal_Rela *irelend,
14315 nds32_elf_blank_t *relax_blank_list,
14316 asection *sec,bfd_vma *off,
14317 bfd_byte *contents)
14319 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
14320 bfd_boolean nested_ex9, nested_loop;
14321 bfd_boolean ex9_loop_aware;
14322 /* We use the highest 1 byte of result to record
14323 how many bytes location counter has to move. */
14325 Elf_Internal_Rela *irel_save = NULL;
14326 struct elf_nds32_link_hash_table *table;
14328 table = nds32_elf_hash_table (info);
14329 ex9_loop_aware = table->ex9_loop_aware;
14331 while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset)
14333 switch (ELF32_R_TYPE ((*irel)->r_info))
14335 case R_NDS32_RELAX_REGION_BEGIN:
14336 /* Ignore code block. */
14337 nested_ex9 = FALSE;
14338 nested_loop = FALSE;
14339 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG)
14341 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)))
14343 /* Check the region if loop or not. If it is true and
14344 ex9-loop-aware is true, ignore the region till region end. */
14345 /* To save the status for in .no_relax ex9 region and
14346 loop region to conform the block can do ex9 relaxation. */
14347 nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG);
14348 nested_loop = (ex9_loop_aware
14349 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG));
14350 while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop))
14353 if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN)
14355 /* There may be nested region. */
14356 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14358 else if (ex9_loop_aware
14359 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14360 nested_loop = TRUE;
14362 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END)
14364 /* The end of region. */
14365 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14366 nested_ex9 = FALSE;
14367 else if (ex9_loop_aware
14368 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14369 nested_loop = FALSE;
14371 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL
14372 && ((*irel)->r_addend & 0x1f) == 2)
14374 /* Alignment exist in the region. */
14375 result |= CLEAN_PRE;
14376 if (((*irel)->r_offset -
14377 get_nds32_elf_blank_total (&relax_blank_list,
14378 (*irel)->r_offset, 0)) & 0x02)
14379 result |= PUSH_PRE;
14382 if ((*irel) >= irelend)
14385 *off = (*irel)->r_offset;
14387 /* The final instruction in the region, regard this one as data to ignore it. */
14388 result |= DATA_EXIST;
14393 case R_NDS32_LABEL:
14394 if (((*irel)->r_addend & 0x1f) == 2)
14396 /* Check this point is align and decide to do ex9 or not. */
14397 result |= CLEAN_PRE;
14398 if (((*irel)->r_offset -
14399 get_nds32_elf_blank_total (&relax_blank_list,
14400 (*irel)->r_offset, 0)) & 0x02)
14401 result |= PUSH_PRE;
14404 case R_NDS32_32_RELA:
14406 result |= (4 << 24);
14407 result |= DATA_EXIST;
14409 case R_NDS32_16_RELA:
14411 result |= (2 << 24);
14412 result |= DATA_EXIST;
14416 /* The least code alignment is 2. If the data is only one byte,
14417 we have to shift one more byte. */
14418 if ((*irel)->r_addend == 1)
14419 result |= ((*irel)->r_addend << 25) ;
14421 result |= ((*irel)->r_addend << 24) ;
14423 result |= DATA_EXIST;
14426 case R_NDS32_25_PCREL_RELA:
14427 case R_NDS32_SDA16S3_RELA:
14428 case R_NDS32_SDA15S3_RELA:
14429 case R_NDS32_SDA15S3:
14430 case R_NDS32_SDA17S2_RELA:
14431 case R_NDS32_SDA15S2_RELA:
14432 case R_NDS32_SDA12S2_SP_RELA:
14433 case R_NDS32_SDA12S2_DP_RELA:
14434 case R_NDS32_SDA15S2:
14435 case R_NDS32_SDA18S1_RELA:
14436 case R_NDS32_SDA15S1_RELA:
14437 case R_NDS32_SDA15S1:
14438 case R_NDS32_SDA19S0_RELA:
14439 case R_NDS32_SDA15S0_RELA:
14440 case R_NDS32_SDA15S0:
14441 case R_NDS32_HI20_RELA:
14442 case R_NDS32_LO12S0_ORI_RELA:
14443 case R_NDS32_LO12S0_RELA:
14444 case R_NDS32_LO12S1_RELA:
14445 case R_NDS32_LO12S2_RELA:
14446 /* These relocation is supported ex9 relaxation currently. */
14447 /* We have to save the relocation for using later, since we have
14448 to check there is any alignment in the same address. */
14452 /* Not support relocations. */
14453 if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table)
14454 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE
14455 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16)
14457 /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here.
14458 But we have to consider if there is any side-effect. */
14459 if (!(result & DATA_EXIST))
14461 /* We have to confirm there is no data relocation in the
14462 same address. In general case, this won't happen. */
14463 /* We have to do ex9 conservative, for those relocation not
14464 considerd we ignore instruction. */
14465 result |= DATA_EXIST;
14466 if (*(contents + *off) & 0x80)
14467 result |= (2 << 24);
14469 result |= (4 << 24);
14474 if ((*irel) < irelend
14475 && ((*irel) + 1) < irelend
14476 && (*irel)->r_offset == ((*irel) + 1)->r_offset)
14477 /* There are relocations pointing to the same address, we have to
14478 check all of them. */
14490 /* Replace with ex9 instruction. */
14493 nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off,
14494 nds32_elf_blank_t **relax_blank_list,
14495 struct elf_nds32_irel_entry *pre_irel_ptr,
14496 struct elf_nds32_irel_entry **irel_list)
14500 /* Implement the ex9 relaxation. */
14501 bfd_putb16 (insn16, contents + pre_off);
14502 if (!insert_nds32_elf_blank_recalc_total (relax_blank_list,
14505 if (pre_irel_ptr != NULL)
14506 nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr);
14511 /* Replace input file instruction which is in ex9 itable. */
14514 nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec)
14516 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
14517 bfd_byte *contents = NULL;
14519 uint16_t insn16, insn_ex9;
14520 /* `pre_*' are used to track previous instruction that can use ex9.it. */
14521 bfd_vma pre_off = -1;
14522 uint16_t pre_insn16 = 0;
14523 struct elf_nds32_irel_entry *pre_irel_ptr = NULL;
14524 Elf_Internal_Rela *internal_relocs;
14525 Elf_Internal_Rela *irel;
14526 Elf_Internal_Rela *irelend;
14527 Elf_Internal_Shdr *symtab_hdr;
14528 Elf_Internal_Sym *isym = NULL;
14529 nds32_elf_blank_t *relax_blank_list = NULL;
14531 uint32_t insn_with_reg = 0;
14533 uint32_t it_insn_with_reg;
14534 unsigned long r_symndx;
14536 struct elf_nds32_irel_entry *irel_list = NULL;
14537 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
14538 int data_flag, do_replace, save_irel;
14539 struct elf_link_hash_entry_list *h_list;
14542 /* Load section instructions, relocations, and symbol table. */
14543 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
14544 || !nds32_get_local_syms (abfd, sec, &isym))
14547 _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */);
14548 irelend = internal_relocs + sec->reloc_count;
14549 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
14553 /* Check if the object enable ex9. */
14554 irel = find_relocs_at_address (internal_relocs, internal_relocs,
14555 irelend, R_NDS32_RELAX_ENTRY);
14557 /* Check this section trigger ex9 relaxation. */
14560 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
14561 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
14562 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
14565 irel = internal_relocs;
14567 /* Check alignment and fetch proper relocation. */
14568 while (off < sec->size)
14570 struct elf_link_hash_entry *h = NULL;
14571 struct elf_nds32_irel_entry *irel_ptr = NULL;
14573 /* Syn the instruction and the relocation. */
14574 while (irel != NULL && irel < irelend && irel->r_offset < off)
14577 data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend,
14578 relax_blank_list, sec,
14580 if (data_flag & PUSH_PRE)
14581 if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14582 &relax_blank_list, pre_irel_ptr,
14586 if (data_flag & CLEAN_PRE)
14590 pre_irel_ptr = NULL;
14592 if (data_flag & DATA_EXIST)
14594 /* We save the move offset in the highest byte. */
14595 off += (data_flag >> 24);
14599 if (*(contents + off) & 0x80)
14601 /* 2-byte instruction. */
14606 /* Load the instruction and its opcode with register for comparing. */
14607 ex9_insn = ex9_insn_head;
14608 insn = bfd_getb32 (contents + off);
14612 it_insn = strtol (ex9_insn->string, NULL, 16);
14613 it_insn_with_reg = 0;
14617 if (irel != NULL && irel < irelend && irel->r_offset == off)
14619 /* Insn with relocation. */
14620 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
14622 if (ex9_insn->irel != NULL)
14623 nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn,
14624 &it_insn_with_reg);
14626 if (ex9_insn->irel != NULL
14627 && (ELF32_R_TYPE (irel->r_info) ==
14628 ELF32_R_TYPE (ex9_insn->irel->r_info))
14629 && (insn_with_reg == it_insn_with_reg))
14631 /* Insn relocation and format is the same as table entry. */
14633 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
14634 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
14635 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
14636 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
14637 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
14638 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
14639 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
14640 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
14641 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
14642 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
14643 && ELF32_R_TYPE (irel->r_info) <=
14644 R_NDS32_SDA12S2_SP_RELA)
14645 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
14646 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
14648 r_symndx = ELF32_R_SYM (irel->r_info);
14649 if (r_symndx < symtab_hdr->sh_info)
14651 /* Local symbol. */
14652 int shndx = isym[r_symndx].st_shndx;
14654 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14655 if (ex9_insn->sec == isec
14656 && ex9_insn->irel->r_addend == irel->r_addend
14657 && ex9_insn->irel->r_info == irel->r_info)
14665 /* External symbol. */
14666 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14667 if (ex9_insn->m_list)
14669 h_list = ex9_insn->m_list->h_list;
14673 && (ex9_insn->m_list->irel->r_addend ==
14680 h_list = h_list->next;
14685 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA)
14687 r_symndx = ELF32_R_SYM (irel->r_info);
14688 if (r_symndx < symtab_hdr->sh_info)
14690 /* Local symbols. Compare its base symbol and offset. */
14691 int shndx = isym[r_symndx].st_shndx;
14693 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14694 if (ex9_insn->sec == isec
14695 && ex9_insn->irel->r_addend == irel->r_addend
14696 && ex9_insn->irel->r_info == irel->r_info)
14704 /* External symbol. */
14705 struct elf_link_hash_entry_mul_list *m_list;
14707 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14708 m_list = ex9_insn->m_list;
14712 h_list = m_list->h_list;
14717 && (m_list->irel->r_addend
14718 == irel->r_addend))
14723 && ex9_insn->m_list
14724 && ex9_insn->m_list == ex9_insn->next->m_list)
14726 /* sethi multiple entry must be fixed */
14727 nds32_elf_ex9_insert_fix (sec, irel,
14728 h, ex9_insn->order);
14732 h_list = h_list->next;
14734 m_list = m_list->next;
14740 /* Import table: Check the symbol hash table and the
14741 jump target. Only R_NDS32_25_PCREL_RELA now. */
14742 else if (ex9_insn->times == -1
14743 && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
14745 nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg);
14746 if (insn_with_reg == it_insn_with_reg)
14749 bfd_vma relocation;
14751 r_symndx = ELF32_R_SYM (irel->r_info);
14752 if (r_symndx >= symtab_hdr->sh_info)
14754 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14755 if ((h->root.type == bfd_link_hash_defined
14756 || h->root.type == bfd_link_hash_defweak)
14757 && h->root.u.def.section != NULL
14758 && h->root.u.def.section->output_section != NULL
14759 && h->root.u.def.section->gc_mark == 1
14760 && bfd_is_abs_section (h->root.u.def.section)
14761 && h->root.u.def.value > sec->size)
14763 relocation = h->root.u.def.value +
14764 h->root.u.def.section->output_section->vma +
14765 h->root.u.def.section->output_offset;
14766 relocation += irel->r_addend;
14767 insn = insn_with_reg
14768 | ((relocation >> 1) & 0xffffff);
14769 snprintf (code, sizeof (code), "%08x", insn);
14770 if (strcmp (code, ex9_insn->string) == 0)
14779 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
14780 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
14781 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
14783 /* These relocations do not have to relocate contens, so it can
14784 be regard as instruction without relocation. */
14785 if (insn == it_insn && ex9_insn->irel == NULL)
14791 /* Instruction without relocation, we only
14792 have to compare their byte code. */
14793 if (insn == it_insn && ex9_insn->irel == NULL)
14797 /* Insntruction match so replacing the code here. */
14798 if (do_replace == 1)
14800 /* There are two formats of ex9 instruction. */
14801 if (ex9_insn->order < 32)
14802 insn_ex9 = INSN_EX9_IT_2;
14804 insn_ex9 = INSN_EX9_IT_1;
14805 insn16 = insn_ex9 | ex9_insn->order;
14807 /* Insert ex9 instruction. */
14808 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14809 &relax_blank_list, pre_irel_ptr,
14812 pre_insn16 = insn16;
14816 /* For instuction with relocation do relax. */
14817 irel_ptr = (struct elf_nds32_irel_entry *)
14818 bfd_malloc (sizeof (struct elf_nds32_irel_entry));
14819 irel_ptr->irel = irel;
14820 irel_ptr->next = NULL;
14821 pre_irel_ptr = irel_ptr;
14824 pre_irel_ptr = NULL;
14827 ex9_insn = ex9_insn->next;
14832 /* Insert ex9 instruction. */
14833 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14834 &relax_blank_list, pre_irel_ptr,
14837 /* Delete the redundant code. */
14838 if (relax_blank_list)
14840 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
14841 relax_blank_list = NULL;
14844 /* Clear the relocation that is replaced by ex9. */
14847 struct elf_nds32_irel_entry *irel_ptr;
14849 irel_ptr = irel_list;
14850 irel_list = irel_ptr->next;
14851 irel_ptr->irel->r_info =
14852 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN);
14858 /* Initialize ex9 hash table. */
14861 nds32_elf_ex9_init (void)
14863 if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc,
14864 sizeof (struct elf_nds32_code_hash_entry),
14867 _bfd_error_handler (_("Linker: cannot init ex9 hash table error \n"));
14873 /* Predict how many bytes will be relaxed with ex9 and ifc. */
14876 nds32_elf_ex9_total_relax (struct bfd_link_info *info)
14878 struct elf_nds32_insn_times_entry *ex9_insn;
14879 struct elf_nds32_insn_times_entry *temp;
14880 int target_optimize;
14881 struct elf_nds32_link_hash_table *table;
14883 if (ex9_insn_head == NULL)
14886 table = nds32_elf_hash_table (info);
14887 target_optimize = table->target_optimize;
14888 ex9_insn = ex9_insn_head;
14891 ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size;
14893 ex9_insn = ex9_insn->next;
14896 ex9_insn_head = NULL;
14898 if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON))
14900 /* Examine ifc reduce size. */
14901 struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head;
14902 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
14907 if (ifc_ent->enable == 0)
14910 irel_ptr = ifc_ent->irel_head;
14914 irel_ptr = irel_ptr->next;
14918 ifc_ent = ifc_ent->next;
14920 ex9_relax_size += size;
14924 /* Finish ex9 table. */
14927 nds32_elf_ex9_finish (struct bfd_link_info *link_info)
14929 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
14930 nds32_elf_order_insn_times (link_info);
14931 nds32_elf_ex9_total_relax (link_info);
14932 /* Traverse the hash table and count its times. */
14933 nds32_elf_code_hash_traverse (nds32_elf_count_insn_times);
14934 nds32_elf_order_insn_times (link_info);
14935 nds32_elf_ex9_build_itable (link_info);
14938 /* Relocate the entries in ex9 table. */
14941 nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr,
14942 struct bfd_link_info *link_info)
14944 Elf_Internal_Sym *isym = NULL;
14945 bfd_vma relocation = -1;
14946 struct elf_link_hash_entry *h;
14948 if (ptr->m_list != NULL)
14950 /* Global symbol. */
14951 h = ptr->m_list->h_list->h;
14952 if ((h->root.type == bfd_link_hash_defined
14953 || h->root.type == bfd_link_hash_defweak)
14954 && h->root.u.def.section != NULL
14955 && h->root.u.def.section->output_section != NULL)
14958 relocation = h->root.u.def.value +
14959 h->root.u.def.section->output_section->vma +
14960 h->root.u.def.section->output_offset;
14961 relocation += ptr->m_list->irel->r_addend;
14966 else if (ptr->sec !=NULL)
14968 /* Local symbol. */
14969 Elf_Internal_Sym sym;
14970 asection *sec = NULL;
14972 asection *isec_ptr = &isec;
14973 Elf_Internal_Rela irel_backup = *(ptr->irel);
14974 asection *sec_backup = ptr->sec;
14975 bfd *abfd = ptr->sec->owner;
14977 if (!nds32_get_local_syms (abfd, sec, &isym))
14979 isym = isym + ELF32_R_SYM (ptr->irel->r_info);
14981 sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
14986 /* The purpose is same as elf_link_input_bfd. */
14987 if (isec_ptr != NULL
14988 && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE
14989 && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
14992 _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr,
14993 elf_section_data (isec_ptr)->sec_info,
14996 relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym,
14997 &ptr->sec, ptr->irel);
14998 if (ptr->irel != NULL)
14999 relocation += ptr->irel->r_addend;
15001 /* Restore origin value since there may be some insntructions that
15002 could not be replaced with ex9.it. */
15003 *(ptr->irel) = irel_backup;
15004 ptr->sec = sec_backup;
15010 /* Import ex9 table and build list. */
15013 nds32_elf_ex9_import_table (struct bfd_link_info *info)
15016 bfd_byte *contents;
15017 unsigned long insn;
15018 FILE *ex9_import_file;
15019 int update_ex9_table;
15020 struct elf_nds32_link_hash_table *table;
15022 table = nds32_elf_hash_table (info);
15023 ex9_import_file = table->ex9_import_file;
15024 rewind (table->ex9_import_file);
15026 contents = bfd_malloc (sizeof (bfd_byte) * 4);
15028 /* Read instructions from the input file and build the list. */
15029 while (!feof (ex9_import_file))
15032 struct elf_nds32_insn_times_entry *ptr;
15035 nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file);
15036 /* Ignore the final byte 0x0a. */
15039 insn = bfd_getb32 (contents);
15040 code = bfd_malloc (sizeof (char) * 9);
15041 snprintf (code, 9, "%08lx", insn);
15042 ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
15043 ptr->string = code;
15047 ptr->m_list = NULL;
15048 ptr->rel_backup.r_offset = 0;
15049 ptr->rel_backup.r_info = 0;
15050 ptr->rel_backup.r_addend = 0;
15053 nds32_elf_ex9_insert_entry (ptr);
15057 update_ex9_table = table->update_ex9_table;
15058 if (update_ex9_table == 1)
15060 /* It has to consider of sethi need to use multiple page
15061 but it not be done yet. */
15062 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
15063 nds32_elf_order_insn_times (info);
15067 /* Export ex9 table. */
15070 nds32_elf_ex9_export (struct bfd_link_info *info,
15071 bfd_byte *contents, int size)
15073 FILE *ex9_export_file;
15074 struct elf_nds32_link_hash_table *table;
15076 table = nds32_elf_hash_table (info);
15077 ex9_export_file = table->ex9_export_file;
15078 fwrite (contents, sizeof (bfd_byte), size, ex9_export_file);
15079 fclose (ex9_export_file);
15082 /* Adjust relocations of J and JAL in ex9.itable.
15083 Export ex9 table. */
15086 nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info)
15088 asection *table_sec = NULL;
15089 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
15090 struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2;
15092 uint32_t insn, insn_with_reg, source_insn;
15093 bfd_byte *contents = NULL, *source_contents = NULL;
15096 int shift, update_ex9_table, offset = 0;
15097 reloc_howto_type *howto = NULL;
15098 Elf_Internal_Rela rel_backup;
15099 unsigned short insn_ex9;
15100 struct elf_nds32_link_hash_table *table;
15101 FILE *ex9_export_file;
15102 static bfd_boolean done = FALSE;
15109 table = nds32_elf_hash_table (link_info);
15111 table->relax_status |= NDS32_RELAX_EX9_DONE;
15114 update_ex9_table = table->update_ex9_table;
15115 /* Generated ex9.itable exactly. */
15116 if (update_ex9_table == 0)
15118 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
15119 it_abfd = it_abfd->link.next)
15121 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
15122 if (table_sec != NULL)
15126 if (table_sec != NULL)
15130 output_bfd = table_sec->output_section->owner;
15131 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15132 if (table_sec->size == 0)
15135 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
15144 output_bfd = link_info->input_bfds->sections->output_section->owner;
15145 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15146 contents = bfd_malloc (sizeof (bfd_byte) * 2048);
15149 /* Relocate instruction. */
15152 bfd_vma relocation, min_relocation = 0xffffffff;
15154 insn = strtol (ex9_insn->string, NULL, 16);
15156 if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL)
15158 if (ex9_insn->m_list)
15159 rel_backup = ex9_insn->m_list->rel_backup;
15161 rel_backup = ex9_insn->rel_backup;
15163 nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg);
15165 bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE
15166 (rel_backup.r_info));
15167 shift = howto->rightshift;
15168 if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA
15169 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA
15170 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA
15171 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA
15172 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA)
15174 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15176 insn_with_reg | ((relocation >> shift) &
15177 nds32_elf_irel_mask (&rel_backup));
15178 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15180 else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3
15181 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0)
15182 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA
15183 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA)
15184 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA
15185 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA)
15186 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA
15187 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA))
15189 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15191 insn_with_reg | (((relocation - gp) >> shift) &
15192 nds32_elf_irel_mask (&rel_backup));
15193 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15195 else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA)
15197 /* Sethi may be multiple entry for one insn. */
15198 if (ex9_insn->next && ex9_insn->m_list
15199 && ex9_insn->m_list == ex9_insn->next->m_list)
15201 struct elf_link_hash_entry_mul_list *m_list;
15202 struct elf_nds32_ex9_refix *fix_ptr;
15203 struct elf_link_hash_entry *h;
15205 temp_ptr = ex9_insn;
15206 temp_ptr2 = ex9_insn;
15207 m_list = ex9_insn->m_list;
15210 h = m_list->h_list->h;
15211 relocation = h->root.u.def.value +
15212 h->root.u.def.section->output_section->vma +
15213 h->root.u.def.section->output_offset;
15214 relocation += m_list->irel->r_addend;
15216 if (relocation < min_relocation)
15217 min_relocation = relocation;
15218 m_list = m_list->next;
15220 relocation = min_relocation;
15222 /* Put insntruction into ex9 table. */
15223 insn = insn_with_reg
15224 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15225 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15226 relocation = relocation + 0x1000; /* hi20 */
15228 while (ex9_insn->next && ex9_insn->m_list
15229 && ex9_insn->m_list == ex9_insn->next->m_list)
15231 /* Multiple sethi. */
15232 ex9_insn = ex9_insn->next;
15235 insn_with_reg | ((relocation >> shift) &
15236 nds32_elf_irel_mask (&rel_backup));
15237 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15238 relocation = relocation + 0x1000; /* hi20 */
15241 fix_ptr = ex9_refix_head;
15244 /* Fix ex9 insn. */
15245 /* temp_ptr2 points to the head of multiple sethi. */
15246 temp_ptr = temp_ptr2;
15247 while (fix_ptr->order != temp_ptr->order && fix_ptr->next)
15249 fix_ptr = fix_ptr->next;
15251 if (fix_ptr->order != temp_ptr->order)
15254 /* Set source insn. */
15256 fix_ptr->h->root.u.def.value +
15257 fix_ptr->h->root.u.def.section->output_section->vma +
15258 fix_ptr->h->root.u.def.section->output_offset;
15259 relocation += fix_ptr->irel->r_addend;
15260 /* sethi imm is imm20s. */
15261 source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff);
15265 /* Match entry and source code. */
15266 insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset);
15267 if (insn == source_insn)
15269 /* Fix the ex9 insn. */
15270 if (temp_ptr->order != fix_ptr->order)
15272 if (!nds32_get_section_contents
15273 (fix_ptr->sec->owner, fix_ptr->sec,
15274 &source_contents, TRUE))
15276 (_("Linker: error cannot fixed ex9 relocation \n"));
15277 if (temp_ptr->order < 32)
15278 insn_ex9 = INSN_EX9_IT_2;
15280 insn_ex9 = INSN_EX9_IT_1;
15281 insn_ex9 = insn_ex9 | temp_ptr->order;
15282 bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset);
15288 if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list)
15290 (_("Linker: error cannot fixed ex9 relocation \n"));
15292 temp_ptr = temp_ptr->next;
15295 fix_ptr = fix_ptr->next;
15300 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15301 insn = insn_with_reg
15302 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15303 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15309 /* Insn without relocation does not have to be fixed
15310 if need to update export table. */
15311 if (update_ex9_table == 1)
15312 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15314 ex9_insn = ex9_insn->next;
15318 ex9_export_file = table->ex9_export_file;
15319 if (ex9_export_file != NULL)
15320 nds32_elf_ex9_export (link_info, contents, table_sec->size);
15321 else if (update_ex9_table == 1)
15323 table->ex9_export_file = table->ex9_import_file;
15324 rewind (table->ex9_export_file);
15325 nds32_elf_ex9_export (link_info, contents, size);
15329 /* Generate ex9 hash table. */
15332 nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec,
15333 struct bfd_link_info *link_info)
15335 Elf_Internal_Rela *internal_relocs;
15336 Elf_Internal_Rela *irelend;
15337 Elf_Internal_Rela *irel;
15338 Elf_Internal_Rela *jrel;
15339 Elf_Internal_Rela rel_backup;
15340 Elf_Internal_Shdr *symtab_hdr;
15341 Elf_Internal_Sym *isym = NULL;
15343 struct elf_link_hash_entry **sym_hashes;
15344 bfd_byte *contents = NULL;
15346 unsigned long r_symndx;
15347 uint32_t insn, insn_with_reg;
15348 struct elf_link_hash_entry *h;
15349 int data_flag, shift, align;
15350 bfd_vma relocation;
15351 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
15352 reloc_howto_type *howto = NULL;
15354 sym_hashes = elf_sym_hashes (abfd);
15355 /* Load section instructions, relocations, and symbol table. */
15356 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
15359 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
15360 TRUE /* keep_memory */);
15361 irelend = internal_relocs + sec->reloc_count;
15362 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
15363 if (!nds32_get_local_syms (abfd, sec, &isym))
15366 /* Check the object if enable ex9. */
15367 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
15368 R_NDS32_RELAX_ENTRY);
15370 /* Check this section trigger ex9 relaxation. */
15373 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
15374 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
15375 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
15378 irel = internal_relocs;
15380 /* Push each insn into hash table. */
15381 while (off < sec->size)
15384 struct elf_nds32_code_hash_entry *entry;
15386 while (irel != NULL && irel < irelend && irel->r_offset < off)
15389 data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend,
15390 NULL, sec, &off, contents);
15391 if (data_flag & DATA_EXIST)
15393 /* We save the move offset in the highest byte. */
15394 off += (data_flag >> 24);
15398 if (*(contents + off) & 0x80)
15407 rel_backup.r_info = 0;
15408 rel_backup.r_offset = 0;
15409 rel_backup.r_addend = 0;
15410 /* Load the instruction and its opcode with register for comparing. */
15411 insn = bfd_getb32 (contents + off);
15413 if (irel != NULL && irel < irelend && irel->r_offset == off)
15415 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
15416 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
15417 shift = howto->rightshift;
15418 align = (1 << shift) - 1;
15419 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
15420 || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA
15421 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
15422 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
15423 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
15424 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
15425 ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15426 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15427 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15428 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15429 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15430 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15431 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15432 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15434 r_symndx = ELF32_R_SYM (irel->r_info);
15436 rel_backup = *irel;
15437 if (r_symndx < symtab_hdr->sh_info)
15439 /* Local symbol. */
15440 int shndx = isym[r_symndx].st_shndx;
15442 bfd_vma st_value = (isym + r_symndx)->st_value;
15443 isec = elf_elfsections (abfd)[shndx]->bfd_section;
15444 relocation = (isec->output_section->vma + isec->output_offset
15445 + st_value + irel->r_addend);
15449 /* External symbol. */
15450 bfd_boolean warned ATTRIBUTE_UNUSED;
15451 bfd_boolean ignored ATTRIBUTE_UNUSED;
15452 bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
15455 /* Maybe there is a better way to get h and relocation */
15456 RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel,
15457 r_symndx, symtab_hdr, sym_hashes,
15458 h, sym_sec, relocation,
15459 unresolved_reloc, warned, ignored);
15460 relocation += irel->r_addend;
15461 if ((h->root.type != bfd_link_hash_defined
15462 && h->root.type != bfd_link_hash_defweak)
15463 || strcmp (h->root.root.string, "_FP_BASE_") == 0)
15470 /* Check for gp relative instruction alignment. */
15471 if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15472 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15473 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15474 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15475 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15476 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15477 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15478 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15481 bfd *output_bfd = sec->output_section->owner;
15482 bfd_reloc_status_type r;
15484 /* If the symbol is in the abs section, the out_bfd will be null.
15485 This happens when the relocation has a symbol@GOTOFF. */
15486 r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15487 if (r != bfd_reloc_ok)
15495 /* Make sure alignment is correct. */
15496 if (relocation & align)
15498 /* Incorrect alignment. */
15500 (_("%s: warning: unaligned small data access. "
15501 "For entry: {%d, %d, %d}, addr = 0x%x, align = 0x%x."),
15502 bfd_get_filename (abfd), irel->r_offset,
15503 irel->r_info, irel->r_addend, relocation, align);
15509 insn = insn_with_reg
15510 | ((relocation >> shift) & nds32_elf_irel_mask (irel));
15512 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
15513 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
15514 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
15516 /* These relocations do not have to relocate contens, so it can
15517 be regard as instruction without relocation. */
15526 snprintf (code, sizeof (code), "%08x", insn);
15528 entry = (struct elf_nds32_code_hash_entry*)
15529 bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE);
15533 (_("%P%F: failed creating ex9.it %s hash table: %E\n"), code);
15538 if (h->root.type == bfd_link_hash_undefined)
15540 /* Global symbol. */
15541 /* In order to do sethi with different symbol but same value. */
15542 if (entry->m_list == NULL)
15544 struct elf_link_hash_entry_mul_list *m_list_new;
15545 struct elf_link_hash_entry_list *h_list_new;
15547 m_list_new = (struct elf_link_hash_entry_mul_list *)
15548 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15549 h_list_new = (struct elf_link_hash_entry_list *)
15550 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15551 entry->m_list = m_list_new;
15552 m_list_new->h_list = h_list_new;
15553 m_list_new->rel_backup = rel_backup;
15554 m_list_new->times = 1;
15555 m_list_new->irel = jrel;
15556 m_list_new->next = NULL;
15558 h_list_new->next = NULL;
15562 struct elf_link_hash_entry_mul_list *m_list = entry->m_list;
15563 struct elf_link_hash_entry_list *h_list;
15567 /* Build the different symbols that point to the same address. */
15568 h_list = m_list->h_list;
15569 if (h_list->h->root.u.def.value == h->root.u.def.value
15570 && h_list->h->root.u.def.section->output_section->vma
15571 == h->root.u.def.section->output_section->vma
15572 && h_list->h->root.u.def.section->output_offset
15573 == h->root.u.def.section->output_offset
15574 && m_list->rel_backup.r_addend == rel_backup.r_addend)
15577 m_list->irel = jrel;
15578 while (h_list->h != h && h_list->next)
15579 h_list = h_list->next;
15580 if (h_list->h != h)
15582 struct elf_link_hash_entry_list *h_list_new;
15584 h_list_new = (struct elf_link_hash_entry_list *)
15585 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15586 h_list->next = h_list_new;
15588 h_list_new->next = NULL;
15592 /* The sethi case may have different address but the
15593 hi20 is the same. */
15594 else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA
15595 && m_list->next == NULL)
15597 struct elf_link_hash_entry_mul_list *m_list_new;
15598 struct elf_link_hash_entry_list *h_list_new;
15600 m_list_new = (struct elf_link_hash_entry_mul_list *)
15601 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15602 h_list_new = (struct elf_link_hash_entry_list *)
15603 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15604 m_list->next = m_list_new;
15605 m_list_new->h_list = h_list_new;
15606 m_list_new->rel_backup = rel_backup;
15607 m_list_new->times = 1;
15608 m_list_new->irel = jrel;
15609 m_list_new->next = NULL;
15611 h_list_new->next = NULL;
15614 m_list = m_list->next;
15625 /* Local symbol and insn without relocation*/
15627 entry->rel_backup = rel_backup;
15630 /* Use in sethi insn with constant and global symbol in same format. */
15632 entry->const_insn = 1;
15634 entry->irel = jrel;
15642 /* Set the _ITB_BASE, and point it to ex9 table. */
15645 nds32_elf_ex9_itb_base (struct bfd_link_info *link_info)
15649 bfd *output_bfd = NULL;
15650 struct bfd_link_hash_entry *bh = NULL;
15652 if (is_ITB_BASE_set == 1)
15655 is_ITB_BASE_set = 1;
15657 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE);
15659 if (bh && (bh->type == bfd_link_hash_defined
15660 || bh->type == bfd_link_hash_defweak))
15663 for (abfd = link_info->input_bfds; abfd != NULL;
15664 abfd = abfd->link.next)
15666 sec = bfd_get_section_by_name (abfd, ".ex9.itable");
15669 output_bfd = sec->output_section->owner;
15673 if (output_bfd == NULL)
15675 output_bfd = link_info->output_bfd;
15676 if (output_bfd->sections == NULL)
15679 sec = bfd_abs_section_ptr;
15681 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_",
15682 FALSE, FALSE, TRUE);
15683 return (_bfd_generic_link_add_one_symbol
15684 (link_info, output_bfd, "_ITB_BASE_",
15685 BSF_GLOBAL | BSF_WEAK, sec, 0,
15686 (const char *) NULL, FALSE, get_elf_backend_data
15687 (output_bfd)->collect, &bh));
15691 #define ELF_ARCH bfd_arch_nds32
15692 #define ELF_MACHINE_CODE EM_NDS32
15693 #define ELF_MAXPAGESIZE 0x1000
15694 #define ELF_TARGET_ID NDS32_ELF_DATA
15696 #define TARGET_BIG_SYM nds32_elf32_be_vec
15697 #define TARGET_BIG_NAME "elf32-nds32be"
15698 #define TARGET_LITTLE_SYM nds32_elf32_le_vec
15699 #define TARGET_LITTLE_NAME "elf32-nds32le"
15701 #define elf_info_to_howto nds32_info_to_howto
15702 #define elf_info_to_howto_rel nds32_info_to_howto_rel
15704 #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create
15705 #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data
15706 #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data
15707 #define bfd_elf32_bfd_relax_section nds32_elf_relax_section
15708 #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags
15710 #define bfd_elf32_mkobject nds32_elf_mkobject
15711 #define elf_backend_action_discarded nds32_elf_action_discarded
15712 #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook
15713 #define elf_backend_check_relocs nds32_elf_check_relocs
15714 #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol
15715 #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections
15716 #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections
15717 #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol
15718 #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections
15719 #define elf_backend_relocate_section nds32_elf_relocate_section
15720 #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook
15721 #define elf_backend_gc_sweep_hook nds32_elf_gc_sweep_hook
15722 #define elf_backend_grok_prstatus nds32_elf_grok_prstatus
15723 #define elf_backend_grok_psinfo nds32_elf_grok_psinfo
15724 #define elf_backend_reloc_type_class nds32_elf_reloc_type_class
15725 #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol
15726 #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook
15727 #define elf_backend_output_arch_syms nds32_elf_output_arch_syms
15728 #define elf_backend_object_p nds32_elf_object_p
15729 #define elf_backend_final_write_processing nds32_elf_final_write_processing
15730 #define elf_backend_special_sections nds32_elf_special_sections
15731 #define bfd_elf32_bfd_get_relocated_section_contents \
15732 nds32_elf_get_relocated_section_contents
15734 #define elf_backend_can_gc_sections 1
15735 #define elf_backend_can_refcount 1
15736 #define elf_backend_want_got_plt 1
15737 #define elf_backend_plt_readonly 1
15738 #define elf_backend_want_plt_sym 0
15739 #define elf_backend_got_header_size 12
15740 #define elf_backend_may_use_rel_p 1
15741 #define elf_backend_default_use_rela_p 1
15742 #define elf_backend_may_use_rela_p 1
15744 #include "elf32-target.h"
15746 #undef ELF_MAXPAGESIZE
15747 #define ELF_MAXPAGESIZE 0x2000
15749 #undef TARGET_BIG_SYM
15750 #define TARGET_BIG_SYM nds32_elf32_linux_be_vec
15751 #undef TARGET_BIG_NAME
15752 #define TARGET_BIG_NAME "elf32-nds32be-linux"
15753 #undef TARGET_LITTLE_SYM
15754 #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec
15755 #undef TARGET_LITTLE_NAME
15756 #define TARGET_LITTLE_NAME "elf32-nds32le-linux"
15758 #define elf32_bed elf32_nds32_lin_bed
15760 #include "elf32-target.h"