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;
6633 Elf_Internal_Sym *isym;
6634 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
6638 /* Track dynamic relocs needed for local syms too. */
6639 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6643 head = ((struct elf_nds32_dyn_relocs **)
6644 &elf_section_data (s)->local_dynrel);
6648 if (p == NULL || p->sec != sec)
6650 bfd_size_type amt = sizeof (*p);
6651 p = (struct elf_nds32_dyn_relocs *) bfd_alloc (dynobj, amt);
6662 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA
6663 || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
6664 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA)
6669 /* This relocation describes the C++ object vtable hierarchy.
6670 Reconstruct it for later use during GC. */
6671 case R_NDS32_RELA_GNU_VTINHERIT:
6672 case R_NDS32_GNU_VTINHERIT:
6673 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
6677 /* This relocation describes which C++ vtable entries are actually
6678 used. Record for later use during GC. */
6679 case R_NDS32_GNU_VTENTRY:
6680 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
6683 case R_NDS32_RELA_GNU_VTENTRY:
6684 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6693 /* Write VAL in uleb128 format to P, returning a pointer to the
6695 This code is copied from elf-attr.c. */
6698 write_uleb128 (bfd_byte *p, unsigned int val)
6713 static bfd_signed_vma
6714 calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
6715 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr,
6716 int *pic_ext_target)
6718 bfd_signed_vma foff;
6719 bfd_vma symval, addend;
6722 /* Get the value of the symbol referred to by the reloc. */
6723 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6725 Elf_Internal_Sym *isym;
6727 /* A local symbol. */
6728 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6730 if (isym->st_shndx == SHN_UNDEF)
6731 sym_sec = bfd_und_section_ptr;
6732 else if (isym->st_shndx == SHN_ABS)
6733 sym_sec = bfd_abs_section_ptr;
6734 else if (isym->st_shndx == SHN_COMMON)
6735 sym_sec = bfd_com_section_ptr;
6737 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6738 symval = isym->st_value + sym_sec->output_section->vma
6739 + sym_sec->output_offset;
6744 struct elf_link_hash_entry *h;
6747 /* An external symbol. */
6748 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6749 h = elf_sym_hashes (abfd)[indx];
6750 BFD_ASSERT (h != NULL);
6752 if (h->root.type != bfd_link_hash_defined
6753 && h->root.type != bfd_link_hash_defweak)
6754 /* This appears to be a reference to an undefined
6755 symbol. Just ignore it--it will be caught by the
6756 regular reloc processing. */
6758 owner = h->root.u.def.section->owner;
6759 if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC))
6760 *pic_ext_target = 1;
6762 if (h->root.u.def.section->flags & SEC_MERGE)
6764 sym_sec = h->root.u.def.section;
6765 symval = _bfd_merged_section_offset (abfd, &sym_sec,
6766 elf_section_data (sym_sec)->sec_info,
6767 h->root.u.def.value);
6768 symval = symval + sym_sec->output_section->vma
6769 + sym_sec->output_offset;
6772 symval = (h->root.u.def.value
6773 + h->root.u.def.section->output_section->vma
6774 + h->root.u.def.section->output_offset);
6777 addend = irel->r_addend;
6779 foff = (symval + addend
6780 - (irel->r_offset + sec->output_section->vma + sec->output_offset));
6785 calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info,
6786 Elf_Internal_Sym *isymbuf,
6787 Elf_Internal_Rela *irel,
6788 Elf_Internal_Shdr *symtab_hdr)
6792 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6794 Elf_Internal_Sym *isym;
6796 /* A local symbol. */
6797 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6799 if (isym->st_shndx == SHN_UNDEF)
6800 sym_sec = bfd_und_section_ptr;
6801 else if (isym->st_shndx == SHN_ABS)
6802 sym_sec = bfd_abs_section_ptr;
6803 else if (isym->st_shndx == SHN_COMMON)
6804 sym_sec = bfd_com_section_ptr;
6806 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6807 symval = isym->st_value + sym_sec->output_section->vma
6808 + sym_sec->output_offset;
6813 struct elf_link_hash_entry *h;
6814 struct elf_nds32_link_hash_table *htab;
6817 /* An external symbol. */
6818 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6819 h = elf_sym_hashes (abfd)[indx];
6820 BFD_ASSERT (h != NULL);
6821 htab = nds32_elf_hash_table (link_info);
6824 while (h->root.type == bfd_link_hash_indirect
6825 || h->root.type == bfd_link_hash_warning)
6826 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6828 if (h->plt.offset == (bfd_vma) - 1)
6830 if (h->root.type != bfd_link_hash_defined
6831 && h->root.type != bfd_link_hash_defweak)
6832 /* This appears to be a reference to an undefined
6833 * symbol. Just ignore it--it will be caught by the
6834 * regular reloc processing. */
6836 symval = (h->root.u.def.value
6837 + h->root.u.def.section->output_section->vma
6838 + h->root.u.def.section->output_offset);
6841 symval = splt->output_section->vma + h->plt.offset;
6847 static bfd_signed_vma
6848 calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info,
6849 Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel,
6850 Elf_Internal_Shdr *symtab_hdr)
6853 if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
6857 return foff - (irel->r_offset
6858 + sec->output_section->vma + sec->output_offset);
6861 /* Convert a 32-bit instruction to 16-bit one.
6862 INSN is the input 32-bit instruction, INSN16 is the output 16-bit
6863 instruction. If INSN_TYPE is not NULL, it the CGEN instruction
6864 type of INSN16. Return 1 if successful. */
6867 nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
6870 uint16_t insn16 = 0;
6872 unsigned long mach = bfd_get_mach (abfd);
6874 if (N32_SH5 (insn) != 0)
6877 switch (N32_SUB5 (insn))
6879 case N32_ALU1_ADD_SLLI:
6880 case N32_ALU1_ADD_SRLI:
6881 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6883 insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn),
6885 insn_type = NDS32_INSN_ADD333;
6887 else if (N32_IS_RT4 (insn))
6889 if (N32_RT5 (insn) == N32_RA5 (insn))
6890 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn));
6891 else if (N32_RT5 (insn) == N32_RB5 (insn))
6892 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn));
6893 insn_type = NDS32_INSN_ADD45;
6897 case N32_ALU1_SUB_SLLI:
6898 case N32_ALU1_SUB_SRLI:
6899 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6901 insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn),
6903 insn_type = NDS32_INSN_SUB333;
6905 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6907 insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn));
6908 insn_type = NDS32_INSN_SUB45;
6912 case N32_ALU1_AND_SLLI:
6913 case N32_ALU1_AND_SRLI:
6914 /* and $rt, $rt, $rb -> and33 for v3, v3m. */
6915 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6916 && N32_IS_RB3 (insn))
6918 if (N32_RT5 (insn) == N32_RA5 (insn))
6919 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn));
6920 else if (N32_RT5 (insn) == N32_RB5 (insn))
6921 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn));
6923 insn_type = NDS32_INSN_AND33;
6927 case N32_ALU1_XOR_SLLI:
6928 case N32_ALU1_XOR_SRLI:
6929 /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */
6930 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6931 && N32_IS_RB3 (insn))
6933 if (N32_RT5 (insn) == N32_RA5 (insn))
6934 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn));
6935 else if (N32_RT5 (insn) == N32_RB5 (insn))
6936 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn));
6938 insn_type = NDS32_INSN_XOR33;
6942 case N32_ALU1_OR_SLLI:
6943 case N32_ALU1_OR_SRLI:
6944 /* or $rt, $rt, $rb -> or33 for v3, v3m. */
6945 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6946 && N32_IS_RB3 (insn))
6948 if (N32_RT5 (insn) == N32_RA5 (insn))
6949 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn));
6950 else if (N32_RT5 (insn) == N32_RB5 (insn))
6951 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn));
6953 insn_type = NDS32_INSN_OR33;
6957 /* nor $rt, $ra, $ra -> not33 for v3, v3m. */
6958 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn)
6959 && N32_RA5 (insn) == N32_RB5 (insn))
6961 insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn));
6962 insn_type = NDS32_INSN_NOT33;
6966 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6968 insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn));
6969 insn_type = NDS32_INSN_SRAI45;
6974 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6976 insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn));
6977 insn_type = NDS32_INSN_SRLI45;
6982 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8)
6984 insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn),
6986 insn_type = NDS32_INSN_SLLI333;
6991 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6993 insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn));
6994 insn_type = NDS32_INSN_ZEH33;
6999 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7001 insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn));
7002 insn_type = NDS32_INSN_SEB33;
7007 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7009 insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn));
7010 insn_type = NDS32_INSN_SEH33;
7015 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7018 insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn));
7019 insn_type = NDS32_INSN_SLT45;
7024 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7027 insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn));
7028 insn_type = NDS32_INSN_SLTS45;
7033 if ((insn16 & 0x8000) == 0)
7039 *pinsn_type = insn_type;
7044 nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7047 uint16_t insn16 = 0;
7049 unsigned long mach = bfd_get_mach (abfd);
7051 /* TODO: bset, bclr, btgl, btst. */
7052 if (__GF (insn, 6, 4) != 0)
7055 switch (N32_IMMU (insn, 6))
7058 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7059 && N32_IS_RB3 (insn))
7061 if (N32_RT5 (insn) == N32_RA5 (insn))
7062 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn));
7063 else if (N32_RT5 (insn) == N32_RB5 (insn))
7064 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn));
7066 insn_type = NDS32_INSN_MUL33;
7070 if ((insn16 & 0x8000) == 0)
7076 *pinsn_type = insn_type;
7081 nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7085 uint16_t insn16 = 0;
7087 unsigned long mach = bfd_get_mach (abfd);
7089 /* Decode 32-bit instruction. */
7090 if (insn & 0x80000000)
7092 /* Not 32-bit insn. */
7096 op6 = N32_OP6 (insn);
7098 /* Convert it to 16-bit instruction. */
7102 if (IS_WITHIN_S (N32_IMM20S (insn), 5))
7104 insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn));
7105 insn_type = NDS32_INSN_MOVI55;
7107 else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16
7108 && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn))
7110 insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn),
7111 N32_IMM20S (insn) - 16);
7112 insn_type = NDS32_INSN_MOVPI45;
7117 if (N32_IMM15S (insn) == 0)
7119 /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp',
7120 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7122 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7124 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7125 insn_type = NDS32_INSN_MOV55;
7128 else if (N32_IMM15S (insn) > 0)
7130 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8)
7132 insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn),
7134 insn_type = NDS32_INSN_ADDI333;
7136 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7137 && N32_IMM15S (insn) < 32)
7139 insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn));
7140 insn_type = NDS32_INSN_ADDI45;
7142 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7143 && N32_RT5 (insn) == N32_RA5 (insn)
7144 && N32_IMM15S (insn) < 512)
7146 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7147 insn_type = NDS32_INSN_ADDI10_SP;
7149 else if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7150 && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256
7151 && (N32_IMM15S (insn) % 4 == 0))
7153 insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn),
7154 N32_IMM15S (insn) >> 2);
7155 insn_type = NDS32_INSN_ADDRI36_SP;
7161 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8)
7163 insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn),
7164 0 - N32_IMM15S (insn));
7165 insn_type = NDS32_INSN_SUBI333;
7167 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7168 && N32_IMM15S (insn) > -32)
7170 insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn),
7171 0 - N32_IMM15S (insn));
7172 insn_type = NDS32_INSN_SUBI45;
7174 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7175 && N32_RT5 (insn) == N32_RA5 (insn)
7176 && N32_IMM15S (insn) >= -512)
7178 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7179 insn_type = NDS32_INSN_ADDI10_SP;
7185 if (N32_IMM15S (insn) == 0)
7187 /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp',
7188 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7190 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7192 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7193 insn_type = NDS32_INSN_MOV55;
7199 if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7200 && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0)
7202 insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn));
7203 insn_type = NDS32_INSN_NEG33;
7208 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7210 if (N32_IMM15U (insn) == 1)
7212 insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn));
7213 insn_type = NDS32_INSN_XLSB33;
7215 else if (N32_IMM15U (insn) == 0x7ff)
7217 insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn));
7218 insn_type = NDS32_INSN_X11B33;
7220 else if (N32_IMM15U (insn) == 0xff)
7222 insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn));
7223 insn_type = NDS32_INSN_ZEB33;
7225 else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn)
7226 && N32_IMM15U (insn) < 256)
7228 int imm15u = N32_IMM15U (insn);
7230 if (__builtin_popcount (imm15u) == 1)
7233 int imm3u = __builtin_ctz (imm15u);
7235 insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u);
7236 insn_type = NDS32_INSN_BMSKI33;
7238 else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1)
7241 int imm3u = __builtin_ctz (imm15u + 1) - 1;
7243 insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u);
7244 insn_type = NDS32_INSN_FEXTI33;
7251 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7252 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7254 insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn));
7255 insn_type = NDS32_INSN_SLTI45;
7260 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7261 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7263 insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn));
7264 insn_type = NDS32_INSN_SLTSI45;
7269 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7271 insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn));
7272 insn_type = NDS32_INSN_LWI450;
7274 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7275 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7277 insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn),
7279 insn_type = NDS32_INSN_LWI333;
7281 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7282 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7284 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7285 insn_type = NDS32_INSN_LWI37;
7287 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7288 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7290 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn));
7291 insn_type = NDS32_INSN_LWI37_SP;
7293 else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8
7294 && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0)
7296 insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn),
7297 N32_IMM15S (insn) + 32);
7298 insn_type = NDS32_INSN_LWI45_FE;
7303 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7305 insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn));
7306 insn_type = NDS32_INSN_SWI450;
7308 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7309 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7311 insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn),
7313 insn_type = NDS32_INSN_SWI333;
7315 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7316 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7318 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7319 insn_type = NDS32_INSN_SWI37;
7321 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7322 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7324 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn));
7325 insn_type = NDS32_INSN_SWI37_SP;
7329 case N32_OP6_LWI_BI:
7330 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7331 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7333 insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7335 insn_type = NDS32_INSN_LWI333_BI;
7339 case N32_OP6_SWI_BI:
7340 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7341 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7343 insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7345 insn_type = NDS32_INSN_SWI333_BI;
7350 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7351 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7353 insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn),
7355 insn_type = NDS32_INSN_LHI333;
7360 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7361 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7363 insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn),
7365 insn_type = NDS32_INSN_SHI333;
7370 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7371 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7373 insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn),
7375 insn_type = NDS32_INSN_LBI333;
7380 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7381 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7383 insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn),
7385 insn_type = NDS32_INSN_SBI333;
7390 return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type);
7393 return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type);
7396 if (!IS_WITHIN_S (N32_IMM14S (insn), 8))
7399 if ((insn & __BIT (14)) == 0)
7402 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7403 && N32_RT5 (insn) != REG_R5)
7404 insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn));
7405 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7406 && N32_RA5 (insn) != REG_R5)
7407 insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn));
7408 insn_type = NDS32_INSN_BEQS38;
7414 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7415 && N32_RT5 (insn) != REG_R5)
7416 insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn));
7417 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7418 && N32_RA5 (insn) != REG_R5)
7419 insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn));
7420 insn_type = NDS32_INSN_BNES38;
7426 switch (N32_BR2_SUB (insn))
7429 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7431 insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn));
7432 insn_type = NDS32_INSN_BEQZ38;
7434 else if (N32_RT5 (insn) == REG_R15
7435 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7437 insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn));
7438 insn_type = NDS32_INSN_BEQZS8;
7443 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7445 insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn));
7446 insn_type = NDS32_INSN_BNEZ38;
7448 else if (N32_RT5 (insn) == REG_R15
7449 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7451 insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn));
7452 insn_type = NDS32_INSN_BNEZS8;
7456 case N32_BR2_IFCALL:
7457 if (IS_WITHIN_U (N32_IMM16S (insn), 9))
7459 insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn));
7460 insn_type = NDS32_INSN_IFCALL9;
7467 if ((insn & __BIT (24)) == 0)
7470 if (IS_WITHIN_S (N32_IMM24S (insn), 8))
7472 insn16 = N16_TYPE8 (J8, N32_IMM24S (insn));
7473 insn_type = NDS32_INSN_J8;
7479 if (__GF (insn, 8, 2) != 0)
7482 switch (N32_IMMU (insn, 5))
7485 if (N32_JREG_HINT (insn) == 0)
7488 insn16 = N16_TYPE5 (JR5, N32_RB5 (insn));
7489 insn_type = NDS32_INSN_JR5;
7491 else if (N32_JREG_HINT (insn) == 1)
7494 insn16 = N16_TYPE5 (RET5, N32_RB5 (insn));
7495 insn_type = NDS32_INSN_RET5;
7497 else if (N32_JREG_HINT (insn) == 3)
7499 /* ifret = mov55 $sp, $sp */
7500 insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP);
7501 insn_type = NDS32_INSN_IFRET;
7506 /* It's convertible when return rt5 is $lp and address
7507 translation is kept. */
7508 if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0)
7510 insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn));
7511 insn_type = NDS32_INSN_JRAL5;
7518 if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32)
7520 /* For v3, swid above 31 are used for ex9.it. */
7521 insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn));
7522 insn_type = NDS32_INSN_BREAK16;
7527 /* This instruction has no 16-bit variant. */
7532 /* Bit-15 of insn16 should be set for a valid instruction. */
7533 if ((insn16 & 0x8000) == 0)
7539 *pinsn_type = insn_type;
7544 special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16,
7545 Elf_Internal_Rela *reloc)
7547 uint16_t insn16 = 0;
7549 if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0
7550 || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16))
7553 if (!N32_IS_RT3 (insn))
7556 switch (N32_OP6 (insn))
7559 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7560 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7563 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7564 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7567 if (!IS_WITHIN_U (N32_IMM17S (insn), 7))
7570 if (__GF (insn, 17, 3) == 6)
7571 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn));
7572 else if (__GF (insn, 17, 3) == 7)
7573 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn));
7577 if ((insn16 & 0x8000) == 0)
7584 /* Convert a 16-bit instruction to 32-bit one.
7585 INSN16 it the input and PINSN it the point to output.
7586 Return non-zero on successful. Otherwise 0 is returned. */
7589 nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn)
7591 uint32_t insn = 0xffffffff;
7592 unsigned long mach = bfd_get_mach (abfd);
7594 /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */
7596 switch (__GF (insn16, 9, 6))
7598 case 0x4: /* add45 */
7599 insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16),
7602 case 0x5: /* sub45 */
7603 insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16),
7606 case 0x6: /* addi45 */
7607 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7608 N16_IMM5U (insn16));
7610 case 0x7: /* subi45 */
7611 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7612 -N16_IMM5U (insn16));
7614 case 0x8: /* srai45 */
7615 insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16),
7616 N16_IMM5U (insn16));
7618 case 0x9: /* srli45 */
7619 insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16),
7620 N16_IMM5U (insn16));
7622 case 0xa: /* slli333 */
7623 insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16),
7624 N16_IMM3U (insn16));
7626 case 0xc: /* add333 */
7627 insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16),
7630 case 0xd: /* sub333 */
7631 insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16),
7634 case 0xe: /* addi333 */
7635 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7636 N16_IMM3U (insn16));
7638 case 0xf: /* subi333 */
7639 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7640 -N16_IMM3U (insn16));
7642 case 0x10: /* lwi333 */
7643 insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16),
7644 N16_IMM3U (insn16));
7646 case 0x12: /* lhi333 */
7647 insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16),
7648 N16_IMM3U (insn16));
7650 case 0x13: /* lbi333 */
7651 insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16),
7652 N16_IMM3U (insn16));
7654 case 0x11: /* lwi333.bi */
7655 insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7656 N16_IMM3U (insn16));
7658 case 0x14: /* swi333 */
7659 insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16),
7660 N16_IMM3U (insn16));
7662 case 0x16: /* shi333 */
7663 insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16),
7664 N16_IMM3U (insn16));
7666 case 0x17: /* sbi333 */
7667 insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16),
7668 N16_IMM3U (insn16));
7670 case 0x15: /* swi333.bi */
7671 insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7672 N16_IMM3U (insn16));
7674 case 0x18: /* addri36.sp */
7675 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP,
7676 N16_IMM6U (insn16) << 2);
7678 case 0x19: /* lwi45.fe */
7679 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8,
7680 (N16_IMM5U (insn16) - 32));
7682 case 0x1a: /* lwi450 */
7683 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7685 case 0x1b: /* swi450 */
7686 insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7689 /* These are r15 implied instructions. */
7690 case 0x30: /* slts45 */
7691 insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7693 case 0x31: /* slt45 */
7694 insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7696 case 0x32: /* sltsi45 */
7697 insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7699 case 0x33: /* slti45 */
7700 insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7702 case 0x34: /* beqzs8, bnezs8 */
7703 if (insn16 & __BIT (8))
7704 insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16));
7706 insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16));
7709 case 0x35: /* break16, ex9.it */
7710 /* Only consider range of v3 break16. */
7711 insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK);
7714 case 0x3c: /* ifcall9 */
7715 insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16));
7717 case 0x3d: /* movpi45 */
7718 insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16);
7721 case 0x3f: /* MISC33 */
7722 switch (insn16 & 0x7)
7725 insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7728 insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16),
7732 insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16),
7736 insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16),
7740 insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16),
7744 insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16),
7751 switch (insn16 & 0x7)
7754 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff);
7757 insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7760 insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7763 insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7765 case 4: /* xlsb33 */
7766 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1);
7768 case 5: /* x11b33 */
7769 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff);
7771 case 6: /* bmski33 */
7772 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7773 1 << __GF (insn16, 3, 3));
7775 case 7: /* fexti33 */
7776 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7777 (1 << (__GF (insn16, 3, 3) + 1)) - 1);
7783 switch (__GF (insn16, 10, 5))
7785 case 0x0: /* mov55 or ifret16 */
7786 if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP
7787 && N16_RT5 (insn16) == N16_RA5 (insn16))
7788 insn = N32_JREG (JR, 0, 0, 0, 3);
7790 insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0);
7792 case 0x1: /* movi55 */
7793 insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16));
7795 case 0x1b: /* addi10s (V2) */
7796 insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16));
7800 switch (__GF (insn16, 11, 4))
7802 case 0x7: /* lwi37.fp/swi37.fp */
7803 if (insn16 & __BIT (7)) /* swi37.fp */
7804 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7806 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7808 case 0x8: /* beqz38 */
7809 insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7811 case 0x9: /* bnez38 */
7812 insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7814 case 0xa: /* beqs38/j8, implied r5 */
7815 if (N16_RT38 (insn16) == 5)
7816 insn = N32_JI (J, N16_IMM8S (insn16));
7818 insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7820 case 0xb: /* bnes38 and others */
7821 if (N16_RT38 (insn16) == 5)
7823 switch (__GF (insn16, 5, 3))
7826 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0);
7829 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1);
7832 insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0);
7834 case 2: /* ex9.it imm5 */
7835 /* ex9.it had no 32-bit variantl. */
7837 case 5: /* add5.pc */
7838 /* add5.pc had no 32-bit variantl. */
7843 insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7845 case 0xe: /* lwi37/swi37 */
7846 if (insn16 & (1 << 7)) /* swi37.sp */
7847 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7849 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7854 if (insn & 0x80000000)
7863 is_sda_access_insn (unsigned long insn)
7865 switch (N32_OP6 (insn))
7886 static unsigned long
7887 turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn)
7893 case R_NDS32_GOT_LO12:
7894 case R_NDS32_GOTOFF_LO12:
7895 case R_NDS32_PLTREL_LO12:
7896 case R_NDS32_PLT_GOTREL_LO12:
7897 case R_NDS32_LO12S0_RELA:
7898 switch (N32_OP6 (insn))
7902 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
7906 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19));
7910 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
7914 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
7919 case R_NDS32_LO12S1_RELA:
7920 switch (N32_OP6 (insn))
7924 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
7928 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18));
7932 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19));
7937 case R_NDS32_LO12S2_RELA:
7938 switch (N32_OP6 (insn))
7942 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
7946 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
7951 case R_NDS32_LO12S2_DP_RELA:
7952 case R_NDS32_LO12S2_SP_RELA:
7953 oinsn = (insn & 0x7ff07000) | (REG_GP << 15);
7963 /* Linker hasn't found the correct merge section for non-section symbol
7964 in relax time, this work is left to the function elf_link_input_bfd().
7965 So for non-section symbol, _bfd_merged_section_offset is also needed
7966 to find the correct symbol address. */
7969 nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym,
7970 asection **psec, Elf_Internal_Rela *rel)
7972 asection *sec = *psec;
7975 relocation = (sec->output_section->vma
7976 + sec->output_offset + sym->st_value);
7977 if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
7979 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7981 _bfd_merged_section_offset (abfd, psec,
7982 elf_section_data (sec)->sec_info,
7983 sym->st_value + rel->r_addend);
7986 _bfd_merged_section_offset (abfd, psec,
7987 elf_section_data (sec)->sec_info,
7988 sym->st_value) + rel->r_addend;
7992 /* If we have changed the section, and our original section is
7993 marked with SEC_EXCLUDE, it means that the original
7994 SEC_MERGE section has been completely subsumed in some
7995 other SEC_MERGE section. In this case, we need to leave
7996 some info around for --emit-relocs. */
7997 if ((sec->flags & SEC_EXCLUDE) != 0)
7998 sec->kept_section = *psec;
8001 rel->r_addend -= relocation;
8002 rel->r_addend += sec->output_section->vma + sec->output_offset;
8008 calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel,
8009 Elf_Internal_Sym *isymbuf,
8010 Elf_Internal_Shdr *symtab_hdr)
8012 bfd_signed_vma foff;
8013 bfd_vma symval, addend;
8014 Elf_Internal_Rela irel_fn;
8015 Elf_Internal_Sym *isym;
8018 /* Get the value of the symbol referred to by the reloc. */
8019 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
8021 /* A local symbol. */
8022 isym = isymbuf + ELF32_R_SYM (irel->r_info);
8024 if (isym->st_shndx == SHN_UNDEF)
8025 sym_sec = bfd_und_section_ptr;
8026 else if (isym->st_shndx == SHN_ABS)
8027 sym_sec = bfd_abs_section_ptr;
8028 else if (isym->st_shndx == SHN_COMMON)
8029 sym_sec = bfd_com_section_ptr;
8031 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
8032 memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela));
8033 symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn);
8034 addend = irel_fn.r_addend;
8039 struct elf_link_hash_entry *h;
8041 /* An external symbol. */
8042 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8043 h = elf_sym_hashes (abfd)[indx];
8044 BFD_ASSERT (h != NULL);
8046 while (h->root.type == bfd_link_hash_indirect
8047 || h->root.type == bfd_link_hash_warning)
8048 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8050 if (h->root.type != bfd_link_hash_defined
8051 && h->root.type != bfd_link_hash_defweak)
8052 /* This appears to be a reference to an undefined
8053 symbol. Just ignore it--it will be caught by the
8054 regular reloc processing. */
8057 if (h->root.u.def.section->flags & SEC_MERGE)
8059 sym_sec = h->root.u.def.section;
8060 symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data
8061 (sym_sec)->sec_info, h->root.u.def.value);
8062 symval = symval + sym_sec->output_section->vma
8063 + sym_sec->output_offset;
8066 symval = (h->root.u.def.value
8067 + h->root.u.def.section->output_section->vma
8068 + h->root.u.def.section->output_offset);
8069 addend = irel->r_addend;
8072 foff = symval + addend;
8078 calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info,
8079 Elf_Internal_Rela *irel,
8080 Elf_Internal_Shdr *symtab_hdr)
8083 bfd_vma *local_got_offsets;
8084 /* Get the value of the symbol referred to by the reloc. */
8085 struct elf_link_hash_entry *h;
8086 struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info);
8088 /* An external symbol. */
8089 symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8090 h = elf_sym_hashes (abfd)[symndx];
8091 while (h->root.type == bfd_link_hash_indirect
8092 || h->root.type == bfd_link_hash_warning)
8093 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8097 BFD_ASSERT (h != NULL);
8098 return htab->sgot->output_section->vma + htab->sgot->output_offset
8103 local_got_offsets = elf_local_got_offsets (abfd);
8104 BFD_ASSERT (local_got_offsets != NULL);
8105 return htab->sgot->output_section->vma + htab->sgot->output_offset
8106 + local_got_offsets[ELF32_R_SYM (irel->r_info)];
8109 /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */
8110 /* The check of h->root.type is passed. */
8114 is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED,
8115 asection *sec, Elf_Internal_Rela *rel)
8118 unsigned short insn16;
8120 if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG))
8122 contents = elf_section_data (sec)->this_hdr.contents;
8123 insn16 = bfd_getb16 (contents + rel->r_offset);
8124 if (insn16 == NDS32_NOP16)
8129 /* It checks whether the instruction could be converted to
8130 16-bit form and returns the converted one.
8132 `internal_relocs' is supposed to be sorted. */
8135 is_convert_32_to_16 (bfd *abfd, asection *sec,
8136 Elf_Internal_Rela *reloc,
8137 Elf_Internal_Rela *internal_relocs,
8138 Elf_Internal_Rela *irelend,
8141 #define NORMAL_32_TO_16 (1 << 0)
8142 #define SPECIAL_32_TO_16 (1 << 1)
8143 bfd_byte *contents = NULL;
8147 Elf_Internal_Rela *pc_rel;
8148 int pic_ext_target = 0;
8149 Elf_Internal_Shdr *symtab_hdr;
8150 Elf_Internal_Sym *isymbuf = NULL;
8154 if (reloc->r_offset + 4 > sec->size)
8157 offset = reloc->r_offset;
8159 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
8161 insn = bfd_getb32 (contents + offset);
8163 if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL))
8164 convert_type = NORMAL_32_TO_16;
8165 else if (special_convert_32_to_16 (insn, insn16, reloc))
8166 convert_type = SPECIAL_32_TO_16;
8170 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8171 if (!nds32_get_local_syms (abfd, sec, &isymbuf))
8174 /* Find the first relocation of the same relocation-type,
8175 so we iteratie them forward. */
8177 while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset)
8180 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8182 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8183 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8184 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA
8185 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8187 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
8189 if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1
8194 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8196 /* movi => movi55 */
8197 mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf,
8199 /* mem_addr is unsigned, but the value should
8200 be between [-16, 15]. */
8201 if ((mem_addr + 0x10) >> 5)
8205 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20)
8206 || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12))
8208 /* It never happen movi to movi55 for R_NDS32_TLS_LE_20,
8209 because it can be relaxed to addi for TLS_LE_ADD. */
8212 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8213 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8214 && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG)
8215 && convert_type == SPECIAL_32_TO_16)
8218 We've selected a best fp-base for this access, so we can
8219 always resolve it anyway. Do nothing. */
8222 else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE
8223 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT))
8224 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY)
8225 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16))
8226 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE)
8227 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA)))
8229 /* Prevent unresolved addi instruction translate
8230 to addi45 or addi333. */
8233 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8235 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
8237 if (off >= ACCURATE_U9BIT_S1 || off <= 0)
8247 nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents,
8248 Elf_Internal_Rela *reloc,
8249 Elf_Internal_Rela *internal_relocs,
8250 Elf_Internal_Rela *irelend,
8251 unsigned short insn16)
8253 Elf_Internal_Rela *pc_rel;
8256 offset = reloc->r_offset;
8257 bfd_putb16 (insn16, contents + offset);
8258 /* Find the first relocation of the same relocation-type,
8259 so we iteratie them forward. */
8261 while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset)
8264 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8266 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8267 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8268 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA)
8271 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA);
8273 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8275 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL);
8276 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8278 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA);
8279 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8280 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8282 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA);
8283 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8285 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA);
8289 /* Find a relocation of type specified by `reloc_type'
8290 of the same r_offset with reloc.
8291 If not found, return irelend.
8293 Assuming relocations are sorted by r_offset,
8294 we find the relocation from `reloc' backward untill relocs,
8295 or find it from `reloc' forward untill irelend. */
8297 static Elf_Internal_Rela *
8298 find_relocs_at_address (Elf_Internal_Rela *reloc,
8299 Elf_Internal_Rela *relocs,
8300 Elf_Internal_Rela *irelend,
8301 enum elf_nds32_reloc_type reloc_type)
8303 Elf_Internal_Rela *rel_t;
8305 /* Find backward. */
8307 rel_t >= relocs && rel_t->r_offset == reloc->r_offset;
8309 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8312 /* We didn't find it backward. Try find it forward. */
8314 rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8316 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8322 /* Find a relocation of specified type and offset.
8323 `reloc' is just a refence point to find a relocation at specified offset.
8324 If not found, return irelend.
8326 Assuming relocations are sorted by r_offset,
8327 we find the relocation from `reloc' backward untill relocs,
8328 or find it from `reloc' forward untill irelend. */
8330 static Elf_Internal_Rela *
8331 find_relocs_at_address_addr (Elf_Internal_Rela *reloc,
8332 Elf_Internal_Rela *relocs,
8333 Elf_Internal_Rela *irelend,
8334 enum elf_nds32_reloc_type reloc_type,
8337 Elf_Internal_Rela *rel_t = NULL;
8339 /* First, we try to find a relocation of offset `offset_p',
8340 and then we use find_relocs_at_address to find specific type. */
8342 if (reloc->r_offset > offset_p)
8344 /* Find backward. */
8346 rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--)
8349 else if (reloc->r_offset < offset_p)
8353 rel_t < irelend && rel_t->r_offset < offset_p; rel_t++)
8360 if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p)
8363 return find_relocs_at_address (rel_t, relocs, irelend, reloc_type);
8367 nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc,
8368 Elf_Internal_Rela *internal_relocs,
8369 Elf_Internal_Rela *irelend,
8370 unsigned char reloc_type)
8372 Elf_Internal_Rela *rel_t;
8375 rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset;
8377 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8379 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8380 && rel_t->r_addend == reloc->r_addend)
8385 for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8387 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8389 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8390 && rel_t->r_addend == reloc->r_addend)
8398 typedef struct nds32_elf_blank nds32_elf_blank_t;
8399 struct nds32_elf_blank
8401 /* Where the blank begins. */
8403 /* The size of the blank. */
8405 /* The accumulative size before this blank. */
8407 nds32_elf_blank_t *next;
8408 nds32_elf_blank_t *prev;
8411 static nds32_elf_blank_t *blank_free_list = NULL;
8413 static nds32_elf_blank_t *
8414 create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p)
8416 nds32_elf_blank_t *blank_t;
8418 if (blank_free_list)
8420 blank_t = blank_free_list;
8421 blank_free_list = blank_free_list->next;
8424 blank_t = bfd_malloc (sizeof (nds32_elf_blank_t));
8426 if (blank_t == NULL)
8429 blank_t->offset = offset_p;
8430 blank_t->size = size_p;
8431 blank_t->total_size = 0;
8432 blank_t->next = NULL;
8433 blank_t->prev = NULL;
8439 remove_nds32_elf_blank (nds32_elf_blank_t *blank_p)
8441 if (blank_free_list)
8443 blank_free_list->prev = blank_p;
8444 blank_p->next = blank_free_list;
8447 blank_p->next = NULL;
8449 blank_p->prev = NULL;
8450 blank_free_list = blank_p;
8454 clean_nds32_elf_blank (void)
8456 nds32_elf_blank_t *blank_t;
8458 while (blank_free_list)
8460 blank_t = blank_free_list;
8461 blank_free_list = blank_free_list->next;
8466 static nds32_elf_blank_t *
8467 search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr)
8469 nds32_elf_blank_t *blank_t;
8475 while (blank_t && addr < blank_t->offset)
8476 blank_t = blank_t->prev;
8477 while (blank_t && blank_t->next && addr >= blank_t->next->offset)
8478 blank_t = blank_t->next;
8484 get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8487 nds32_elf_blank_t *blank_t;
8489 blank_t = search_nds32_elf_blank (*blank_p, addr);
8496 if (addr < blank_t->offset + blank_t->size)
8497 return blank_t->total_size + (addr - blank_t->offset);
8499 return blank_t->total_size + blank_t->size;
8503 insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len)
8505 nds32_elf_blank_t *blank_t, *blank_t2;
8509 *blank_p = create_nds32_elf_blank (addr, len);
8510 return *blank_p ? TRUE : FALSE;
8513 blank_t = search_nds32_elf_blank (*blank_p, addr);
8515 if (blank_t == NULL)
8517 blank_t = create_nds32_elf_blank (addr, len);
8520 while ((*blank_p)->prev != NULL)
8521 *blank_p = (*blank_p)->prev;
8522 blank_t->next = *blank_p;
8523 (*blank_p)->prev = blank_t;
8524 (*blank_p) = blank_t;
8528 if (addr < blank_t->offset + blank_t->size)
8530 if (addr > blank_t->offset + blank_t->size)
8531 blank_t->size = addr - blank_t->offset;
8535 blank_t2 = create_nds32_elf_blank (addr, len);
8540 blank_t->next->prev = blank_t2;
8541 blank_t2->next = blank_t->next;
8543 blank_t2->prev = blank_t;
8544 blank_t->next = blank_t2;
8545 *blank_p = blank_t2;
8552 insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8555 nds32_elf_blank_t *blank_t;
8557 if (!insert_nds32_elf_blank (blank_p, addr, len))
8564 blank_t->total_size = 0;
8565 blank_t = blank_t->next;
8570 blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size;
8571 blank_t = blank_t->next;
8578 calc_nds32_blank_total (nds32_elf_blank_t *blank_p)
8580 nds32_elf_blank_t *blank_t;
8581 bfd_vma total_size = 0;
8587 while (blank_t->prev)
8588 blank_t = blank_t->prev;
8591 blank_t->total_size = total_size;
8592 total_size += blank_t->size;
8593 blank_t = blank_t->next;
8598 nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec,
8599 nds32_elf_blank_t *blank_p)
8601 Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */
8602 Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */
8603 Elf_Internal_Sym *isymend; /* Symbol entry iterator. */
8604 unsigned int sec_shndx; /* The section the be relaxed. */
8605 bfd_byte *contents; /* Contents data of iterating section. */
8606 Elf_Internal_Rela *internal_relocs;
8607 Elf_Internal_Rela *irel;
8608 Elf_Internal_Rela *irelend;
8609 struct elf_link_hash_entry **sym_hashes;
8610 struct elf_link_hash_entry **end_hashes;
8611 unsigned int symcount;
8613 nds32_elf_blank_t *blank_t;
8614 nds32_elf_blank_t *blank_t2;
8615 nds32_elf_blank_t *blank_head;
8617 blank_head = blank_t = blank_p;
8618 while (blank_head->prev != NULL)
8619 blank_head = blank_head->prev;
8620 while (blank_t->next != NULL)
8621 blank_t = blank_t->next;
8623 if (blank_t->offset + blank_t->size <= sec->size)
8625 blank_t->next = create_nds32_elf_blank (sec->size + 4, 0);
8626 blank_t->next->prev = blank_t;
8628 if (blank_head->offset > 0)
8630 blank_head->prev = create_nds32_elf_blank (0, 0);
8631 blank_head->prev->next = blank_head;
8632 blank_head = blank_head->prev;
8635 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
8637 /* The deletion must stop at the next ALIGN reloc for an alignment
8638 power larger than the number of bytes we are deleting. */
8640 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8641 if (!nds32_get_local_syms (abfd, sec, &isym))
8646 isym = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8647 symtab_hdr->sh_info, 0, NULL, NULL, NULL);
8648 symtab_hdr->contents = (bfd_byte *) isym;
8651 if (isym == NULL || symtab_hdr->sh_info == 0)
8654 blank_t = blank_head;
8655 calc_nds32_blank_total (blank_head);
8657 for (sect = abfd->sections; sect != NULL; sect = sect->next)
8659 /* Adjust all the relocs. */
8661 /* Relocations MUST be kept in memory, because relaxation adjust them. */
8662 internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL,
8663 TRUE /* keep_memory */);
8664 irelend = internal_relocs + sect->reloc_count;
8666 blank_t = blank_head;
8667 blank_t2 = blank_head;
8669 if (!(sect->flags & SEC_RELOC))
8672 nds32_get_section_contents (abfd, sect, &contents, TRUE);
8674 for (irel = internal_relocs; irel < irelend; irel++)
8678 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8
8679 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32
8680 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8682 unsigned long val = 0;
8684 long before, between;
8687 switch (ELF32_R_TYPE (irel->r_info))
8690 offset = bfd_get_8 (abfd, contents + irel->r_offset);
8692 case R_NDS32_DIFF16:
8693 offset = bfd_get_16 (abfd, contents + irel->r_offset);
8695 case R_NDS32_DIFF32:
8696 val = bfd_get_32 (abfd, contents + irel->r_offset);
8697 /* Get the signed bit and mask for the high part. The
8698 gcc will alarm when right shift 32-bit since the
8699 type size of long may be 32-bit. */
8700 mask = 0 - (val >> 31);
8702 offset = (val | (mask - 0xffffffff));
8711 0 |encoded in location|
8712 |------------|-------------------|---------
8714 -- before ---| *****************
8715 --------------------- between ---|
8717 We only care how much data are relax between DIFF,
8720 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8721 between = get_nds32_elf_blank_total (&blank_t,
8722 irel->r_addend + offset, 0);
8723 if (between == before)
8724 goto done_adjust_diff;
8726 switch (ELF32_R_TYPE (irel->r_info))
8729 bfd_put_8 (abfd, offset - (between - before),
8730 contents + irel->r_offset);
8732 case R_NDS32_DIFF16:
8733 bfd_put_16 (abfd, offset - (between - before),
8734 contents + irel->r_offset);
8736 case R_NDS32_DIFF32:
8737 bfd_put_32 (abfd, offset - (between - before),
8738 contents + irel->r_offset);
8742 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128
8743 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8746 unsigned int len = 0;
8747 unsigned long before, between;
8750 val = read_unsigned_leb128 (abfd, contents + irel->r_offset,
8753 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8754 between = get_nds32_elf_blank_total (&blank_t,
8755 irel->r_addend + val, 0);
8756 if (between == before)
8757 goto done_adjust_diff;
8759 p = contents + irel->r_offset;
8761 memset (p, 0x80, len);
8763 p = write_uleb128 (p, val - (between - before)) - 1;
8771 raddr = irel->r_offset;
8772 irel->r_offset -= get_nds32_elf_blank_total (&blank_t2,
8775 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
8777 if (blank_t2 && blank_t2->next
8778 && (blank_t2->offset > raddr
8779 || blank_t2->next->offset <= raddr))
8781 (_("%B: %s\n"), abfd,
8782 "Error: search_nds32_elf_blank reports wrong node");
8784 /* Mark reloc in deleted portion as NONE.
8785 For some relocs like R_NDS32_LABEL that doesn't modify the
8786 content in the section. R_NDS32_LABEL doesn't belong to the
8787 instruction in the section, so we should preserve it. */
8788 if (raddr >= blank_t2->offset
8789 && raddr < blank_t2->offset + blank_t2->size
8790 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL
8791 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN
8792 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
8793 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
8794 && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND
8795 && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND)
8797 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
8803 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE
8804 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
8805 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
8808 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info
8809 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx
8810 && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION)
8812 if (irel->r_addend <= sec->size)
8814 get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1);
8819 /* Adjust the local symbols defined in this section. */
8820 blank_t = blank_head;
8821 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
8823 if (isym->st_shndx == sec_shndx)
8825 if (isym->st_value <= sec->size)
8828 bfd_vma orig_addr = isym->st_value;
8830 ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1);
8831 isym->st_value -= ahead;
8833 /* Adjust function size. */
8834 if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC
8835 && isym->st_size > 0)
8837 get_nds32_elf_blank_total
8838 (&blank_t, orig_addr + isym->st_size, 0) - ahead;
8843 /* Now adjust the global symbols defined in this section. */
8844 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
8845 - symtab_hdr->sh_info);
8846 sym_hashes = elf_sym_hashes (abfd);
8847 end_hashes = sym_hashes + symcount;
8848 blank_t = blank_head;
8849 for (; sym_hashes < end_hashes; sym_hashes++)
8851 struct elf_link_hash_entry *sym_hash = *sym_hashes;
8853 if ((sym_hash->root.type == bfd_link_hash_defined
8854 || sym_hash->root.type == bfd_link_hash_defweak)
8855 && sym_hash->root.u.def.section == sec)
8857 if (sym_hash->root.u.def.value <= sec->size)
8860 bfd_vma orig_addr = sym_hash->root.u.def.value;
8862 ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1);
8863 sym_hash->root.u.def.value -= ahead;
8865 /* Adjust function size. */
8866 if (sym_hash->type == STT_FUNC)
8868 get_nds32_elf_blank_total
8869 (&blank_t, orig_addr + sym_hash->size, 0) - ahead;
8875 contents = elf_section_data (sec)->this_hdr.contents;
8876 blank_t = blank_head;
8877 while (blank_t->next)
8879 /* Actually delete the bytes. */
8881 /* If current blank is the last blank overlap with current section,
8882 go to finish process. */
8883 if (sec->size <= (blank_t->next->offset))
8886 memmove (contents + blank_t->offset - blank_t->total_size,
8887 contents + blank_t->offset + blank_t->size,
8888 blank_t->next->offset - (blank_t->offset + blank_t->size));
8890 blank_t = blank_t->next;
8893 if (sec->size > (blank_t->offset + blank_t->size))
8895 /* There are remaining code between blank and section boundary.
8896 Move the remaining code to appropriate location. */
8897 memmove (contents + blank_t->offset - blank_t->total_size,
8898 contents + blank_t->offset + blank_t->size,
8899 sec->size - (blank_t->offset + blank_t->size));
8900 sec->size -= blank_t->total_size + blank_t->size;
8903 /* This blank is not entirely included in the section,
8904 reduce the section size by only part of the blank size. */
8905 sec->size -= blank_t->total_size + (sec->size - blank_t->offset);
8909 blank_t = blank_head;
8910 blank_head = blank_head->next;
8911 remove_nds32_elf_blank (blank_t);
8917 /* Get the contents of a section. */
8920 nds32_get_section_contents (bfd *abfd, asection *sec,
8921 bfd_byte **contents_p, bfd_boolean cache)
8923 /* Get the section contents. */
8924 if (elf_section_data (sec)->this_hdr.contents != NULL)
8925 *contents_p = elf_section_data (sec)->this_hdr.contents;
8928 if (!bfd_malloc_and_get_section (abfd, sec, contents_p))
8931 elf_section_data (sec)->this_hdr.contents = *contents_p;
8937 /* Get the contents of the internal symbol of abfd. */
8940 nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED,
8941 Elf_Internal_Sym **isymbuf_p)
8943 Elf_Internal_Shdr *symtab_hdr;
8944 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8946 /* Read this BFD's local symbols if we haven't done so already. */
8947 if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0)
8949 *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents;
8950 if (*isymbuf_p == NULL)
8952 *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8953 symtab_hdr->sh_info, 0,
8955 if (*isymbuf_p == NULL)
8959 symtab_hdr->contents = (bfd_byte *) (*isymbuf_p);
8964 /* Range of small data. */
8965 static bfd_vma sdata_range[2][2];
8966 static bfd_vma const sdata_init_range[2] =
8967 { ACCURATE_12BIT_S1, ACCURATE_19BIT };
8970 nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED,
8971 bfd_byte *contents, bfd_vma addr)
8973 unsigned long insn = bfd_getb32 (contents + addr);
8975 if (insn & 0x80000000)
8981 /* Set the gp relax range. We have to measure the safe range
8982 to do gp relaxation. */
8985 relax_range_measurement (bfd *abfd)
8987 asection *sec_f, *sec_b;
8988 /* For upper bound. */
8989 bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize;
8991 static int decide_relax_range = 0;
8993 int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]);
8995 if (decide_relax_range)
8997 decide_relax_range = 1;
8999 if (sda_rela_sec == NULL)
9001 /* Since there is no data sections, we assume the range is page size. */
9002 for (i = 0; i < range_number; i++)
9004 sdata_range[i][0] = sdata_init_range[i] - 0x1000;
9005 sdata_range[i][1] = sdata_init_range[i] - 0x1000;
9010 /* Get the biggest alignment power after the gp located section. */
9011 sec_f = sda_rela_sec->output_section;
9012 sec_b = sec_f->next;
9014 while (sec_b != NULL)
9016 if ((unsigned)(1 << sec_b->alignment_power) > align)
9017 align = (1 << sec_b->alignment_power);
9018 sec_b = sec_b->next;
9021 /* I guess we can not determine the section before
9022 gp located section, so we assume the align is max page size. */
9023 for (i = 0; i < range_number; i++)
9025 sdata_range[i][1] = sdata_init_range[i] - align;
9026 BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]);
9027 sdata_range[i][0] = sdata_init_range[i] - maxpgsz;
9028 BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]);
9032 /* These are macros used to check flags encoded in r_addend.
9033 They are only used by nds32_elf_relax_section (). */
9034 #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff)
9035 #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000)
9036 #define IS_OPTIMIZE(addend) ((addend) & 0x40000000)
9037 #define IS_16BIT_ON(addend) ((addend) & 0x20000000)
9039 /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */
9042 nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9043 Elf_Internal_Rela *internal_relocs, int *insn_len,
9044 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9045 Elf_Internal_Shdr *symtab_hdr)
9047 /* There are 3 variations for LONGCALL1
9048 case 4-4-2; 16-bit on, optimize off or optimize for space
9049 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9050 ori ta, ta, lo12(symbol) ; LO12S0
9053 case 4-4-4; 16-bit off, optimize don't care
9054 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9055 ori ta, ta, lo12(symbol) ; LO12S0
9058 case 4-4-4; 16-bit on, optimize for speed
9059 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9060 ori ta, ta, lo12(symbol) ; LO12S0
9062 Check code for -mlong-calls output. */
9064 /* Get the reloc for the address from which the register is
9065 being loaded. This reloc will tell us which function is
9066 actually being called. */
9069 int seq_len; /* Original length of instruction sequence. */
9071 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9072 int pic_ext_target = 0;
9073 bfd_signed_vma foff;
9076 irelend = internal_relocs + sec->reloc_count;
9077 seq_len = GET_SEQ_LEN (irel->r_addend);
9078 laddr = irel->r_offset;
9079 *insn_len = seq_len;
9081 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9082 R_NDS32_HI20_RELA, laddr);
9083 lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9084 R_NDS32_LO12S0_ORI_RELA,
9087 if (hi_irelfn == irelend || lo_irelfn == irelend)
9090 ("%B: warning: R_NDS32_LONGCALL1 points to unrecognized"
9091 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9095 /* Get the value of the symbol referred to by the reloc. */
9096 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9099 /* This condition only happened when symbol is undefined. */
9100 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9101 || foff >= CONSERVATIVE_24BIT_S1)
9104 /* Relax to: jal symbol; 25_PCREL */
9105 /* For simplicity of coding, we are going to modify the section
9106 contents, the section relocs, and the BFD symbol table. We
9107 must tell the rest of the code not to free up this
9108 information. It would be possible to instead create a table
9109 of changes which have to be made, as is done in coff-mips.c;
9110 that would be more work, but would require less memory when
9111 the linker is run. */
9113 /* Replace the long call with a jal. */
9114 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9115 R_NDS32_25_PCREL_RELA);
9116 irel->r_addend = hi_irelfn->r_addend;
9118 /* We don't resolve this here but resolve it in relocate_section. */
9120 bfd_putb32 (insn, contents + irel->r_offset);
9123 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9125 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9130 insn16 = NDS32_NOP16;
9131 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9133 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9134 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9140 #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000)
9141 /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */
9144 nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9145 Elf_Internal_Rela *internal_relocs, int *insn_len,
9146 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9147 Elf_Internal_Shdr *symtab_hdr)
9149 /* bltz rt, .L1 ; LONGCALL2
9150 jal symbol ; 25_PCREL
9153 /* Get the reloc for the address from which the register is
9154 being loaded. This reloc will tell us which function is
9155 actually being called. */
9159 Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend;
9160 int pic_ext_target = 0;
9161 bfd_signed_vma foff;
9163 irelend = internal_relocs + sec->reloc_count;
9164 laddr = irel->r_offset;
9166 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9167 R_NDS32_25_PCREL_RELA, laddr + 4);
9169 if (i1_irelfn == irelend)
9172 ("%B: warning: R_NDS32_LONGCALL2 points to unrecognized"
9173 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9177 insn = bfd_getb32 (contents + laddr);
9179 /* Get the value of the symbol referred to by the reloc. */
9180 foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr,
9183 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9184 || foff >= CONSERVATIVE_16BIT_S1)
9187 /* Relax to bgezal rt, label ; 17_PCREL
9188 or bltzal rt, label ; 17_PCREL */
9190 /* Convert to complimentary conditional call. */
9191 insn = CONVERT_CONDITION_CALL (insn);
9193 /* For simplicity of coding, we are going to modify the section
9194 contents, the section relocs, and the BFD symbol table. We
9195 must tell the rest of the code not to free up this
9196 information. It would be possible to instead create a table
9197 of changes which have to be made, as is done in coff-mips.c;
9198 that would be more work, but would require less memory when
9199 the linker is run. */
9201 /* Clean unnessary relocations. */
9203 ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE);
9205 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9206 R_NDS32_17_PCREL_RELA, laddr);
9207 if (cond_irelfn != irelend)
9208 cond_irelfn->r_info =
9209 ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE);
9211 /* Replace the long call with a bgezal. */
9212 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info),
9213 R_NDS32_17_PCREL_RELA);
9214 irel->r_addend = i1_irelfn->r_addend;
9216 bfd_putb32 (insn, contents + irel->r_offset);
9222 /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */
9225 nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9226 Elf_Internal_Rela *internal_relocs, int *insn_len,
9227 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9228 Elf_Internal_Shdr *symtab_hdr)
9230 /* There are 3 variations for LONGCALL3
9231 case 4-4-4-2; 16-bit on, optimize off or optimize for space
9232 bltz rt, $1 ; LONGCALL3
9233 sethi ta, hi20(symbol) ; HI20
9234 ori ta, ta, lo12(symbol) ; LO12S0
9238 case 4-4-4-4; 16-bit off, optimize don't care
9239 bltz rt, $1 ; LONGCALL3
9240 sethi ta, hi20(symbol) ; HI20
9241 ori ta, ta, lo12(symbol) ; LO12S0
9245 case 4-4-4-4; 16-bit on, optimize for speed
9246 bltz rt, $1 ; LONGCALL3
9247 sethi ta, hi20(symbol) ; HI20
9248 ori ta, ta, lo12(symbol) ; LO12S0
9252 /* Get the reloc for the address from which the register is
9253 being loaded. This reloc will tell us which function is
9254 actually being called. */
9257 int seq_len; /* Original length of instruction sequence. */
9259 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9260 int pic_ext_target = 0;
9261 bfd_signed_vma foff;
9264 irelend = internal_relocs + sec->reloc_count;
9265 seq_len = GET_SEQ_LEN (irel->r_addend);
9266 laddr = irel->r_offset;
9267 *insn_len = seq_len;
9270 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9271 R_NDS32_HI20_RELA, laddr + 4);
9273 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9274 R_NDS32_LO12S0_ORI_RELA, laddr + 8);
9276 if (hi_irelfn == irelend || lo_irelfn == irelend)
9279 ("%B: warning: R_NDS32_LONGCALL3 points to unrecognized"
9280 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9284 /* Get the value of the symbol referred to by the reloc. */
9285 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9288 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9289 || foff >= CONSERVATIVE_24BIT_S1)
9292 insn = bfd_getb32 (contents + laddr);
9293 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
9295 /* Relax to bgezal rt, label ; 17_PCREL
9296 or bltzal rt, label ; 17_PCREL */
9298 /* Convert to complimentary conditional call. */
9299 insn = CONVERT_CONDITION_CALL (insn);
9300 bfd_putb32 (insn, contents + irel->r_offset);
9304 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9306 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9308 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9311 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9312 R_NDS32_17_PCREL_RELA, laddr);
9313 if (cond_irelfn != irelend)
9315 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9316 R_NDS32_17_PCREL_RELA);
9317 cond_irelfn->r_addend = hi_irelfn->r_addend;
9322 insn16 = NDS32_NOP16;
9323 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9324 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9326 hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9330 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
9332 /* Relax to the following instruction sequence
9333 bltz rt, $1 ; LONGCALL2
9334 jal symbol ; 25_PCREL
9338 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9340 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9341 R_NDS32_25_PCREL_RELA);
9343 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2);
9346 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9350 insn16 = NDS32_NOP16;
9351 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9353 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9354 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9361 /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */
9364 nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9365 Elf_Internal_Rela *internal_relocs, int *insn_len,
9366 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9367 Elf_Internal_Shdr *symtab_hdr)
9369 /* There are 3 variations for LONGJUMP1
9370 case 4-4-2; 16-bit bit on, optimize off or optimize for space
9371 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9372 ori ta, ta, lo12(symbol) ; LO12S0
9375 case 4-4-4; 16-bit off, optimize don't care
9376 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9377 ori ta, ta, lo12(symbol) ; LO12S0
9380 case 4-4-4; 16-bit on, optimize for speed
9381 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9382 ori ta, ta, lo12(symbol) ; LO12S0
9385 /* Get the reloc for the address from which the register is
9386 being loaded. This reloc will tell us which function is
9387 actually being called. */
9390 int seq_len; /* Original length of instruction sequence. */
9391 int insn16_on; /* 16-bit on/off. */
9393 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9394 int pic_ext_target = 0;
9395 bfd_signed_vma foff;
9397 unsigned long reloc;
9399 irelend = internal_relocs + sec->reloc_count;
9400 seq_len = GET_SEQ_LEN (irel->r_addend);
9401 laddr = irel->r_offset;
9402 *insn_len = seq_len;
9403 insn16_on = IS_16BIT_ON (irel->r_addend);
9406 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9407 R_NDS32_HI20_RELA, laddr);
9409 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9410 R_NDS32_LO12S0_ORI_RELA, laddr + 4);
9411 if (hi_irelfn == irelend || lo_irelfn == irelend)
9414 ("%B: warning: R_NDS32_LONGJUMP1 points to unrecognized"
9415 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9419 /* Get the value of the symbol referred to by the reloc. */
9420 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9423 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
9424 || foff < -CONSERVATIVE_24BIT_S1)
9427 if (insn16_on && foff >= -ACCURATE_8BIT_S1
9428 && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2))
9431 /* 16-bit on, but not optimized for speed. */
9432 reloc = R_NDS32_9_PCREL_RELA;
9434 bfd_putb16 (insn16, contents + irel->r_offset);
9437 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9442 reloc = R_NDS32_25_PCREL_RELA;
9444 bfd_putb32 (insn, contents + irel->r_offset);
9447 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16);
9452 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9454 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9456 if ((seq_len & 0x2) && ((*insn_len & 2) == 0))
9458 insn16 = NDS32_NOP16;
9459 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9461 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9463 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9469 /* Revert condition branch. This function does not check if the input
9470 instruction is condition branch or not. */
9473 nds32_elf_convert_branch (uint16_t insn16, uint32_t insn,
9474 uint16_t *re_insn16, uint32_t *re_insn)
9476 uint32_t comp_insn = 0;
9477 uint16_t comp_insn16 = 0;
9481 if (N32_OP6 (insn) == N32_OP6_BR1)
9484 comp_insn = (insn ^ 0x4000) & 0xffffc000;
9485 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5)
9487 /* Insn can be contracted to 16-bit implied r5. */
9489 (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38;
9490 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9493 else if (N32_OP6 (insn) == N32_OP6_BR3)
9495 /* bnec $ta, imm11, label. */
9496 comp_insn = (insn ^ 0x80000) & 0xffffff00;
9500 comp_insn = (insn ^ 0x10000) & 0xffffc000;
9501 if (N32_BR2_SUB (insn) == N32_BR2_BEQZ
9502 || N32_BR2_SUB (insn) == N32_BR2_BNEZ)
9504 if (N32_IS_RT3 (insn))
9506 /* Insn can be contracted to 16-bit. */
9508 (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38;
9509 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9511 else if (N32_RT5 (insn) == REG_R15)
9513 /* Insn can be contracted to 16-bit. */
9515 (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38;
9522 switch ((insn16 & 0xf000) >> 12)
9525 /* beqz38 or bnez38 */
9526 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9527 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ;
9528 comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20;
9532 /* beqs38 or bnes38 */
9533 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9534 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ;
9535 comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20)
9540 /* beqzS8 or bnezS8 */
9541 comp_insn16 = (insn16 ^ 0x0100) & 0xff00;
9542 comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ;
9543 comp_insn |= REG_R15 << 20;
9550 if (comp_insn && re_insn)
9551 *re_insn = comp_insn;
9552 if (comp_insn16 && re_insn16)
9553 *re_insn16 = comp_insn16;
9556 /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */
9559 nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9560 Elf_Internal_Rela *internal_relocs, int *insn_len,
9561 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9562 Elf_Internal_Shdr *symtab_hdr)
9564 /* There are 3 variations for LONGJUMP2
9565 case 2-4; 1st insn convertible, 16-bit on,
9566 optimize off or optimize for space
9567 bnes38 rt, ra, $1 ; LONGJUMP2
9571 case 4-4; 1st insn not convertible
9572 bne rt, ra, $1 ; LONGJUMP2
9576 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9577 bne rt, ra, $1 ; LONGJUMP2
9581 /* Get the reloc for the address from which the register is
9582 being loaded. This reloc will tell us which function is
9583 actually being called. */
9586 int seq_len; /* Original length of instruction sequence. */
9587 Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend;
9588 int pic_ext_target = 0, first_size;
9590 bfd_signed_vma foff;
9591 uint32_t insn, re_insn = 0;
9592 uint16_t insn16, re_insn16 = 0;
9593 unsigned long reloc, cond_reloc;
9595 enum elf_nds32_reloc_type checked_types[] =
9596 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9598 irelend = internal_relocs + sec->reloc_count;
9599 seq_len = GET_SEQ_LEN (irel->r_addend);
9600 laddr = irel->r_offset;
9601 *insn_len = seq_len;
9602 first_size = (seq_len == 6) ? 2 : 4;
9605 find_relocs_at_address_addr (irel, internal_relocs,
9606 irelend, R_NDS32_25_PCREL_RELA,
9607 laddr + first_size);
9609 for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++)
9612 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9613 checked_types[i], laddr);
9614 if (cond_irelfn != irelend)
9618 if (i2_irelfn == irelend || cond_irelfn == irelend)
9621 ("%B: warning: R_NDS32_LONGJUMP2 points to unrecognized"
9622 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9626 /* Get the value of the symbol referred to by the reloc. */
9628 calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr,
9630 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9631 || foff >= CONSERVATIVE_16BIT_S1)
9634 /* Get the all corresponding instructions. */
9635 if (first_size == 4)
9637 insn = bfd_getb32 (contents + laddr);
9638 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9642 insn16 = bfd_getb16 (contents + laddr);
9643 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9646 if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size)
9647 && foff < ACCURATE_8BIT_S1 - first_size)
9649 if (first_size == 4)
9651 /* Don't convert it to 16-bit now, keep this as relaxable for
9652 ``label reloc; INSN16''. */
9654 /* Save comp_insn32 to buffer. */
9655 bfd_putb32 (re_insn, contents + irel->r_offset);
9657 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9658 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9659 cond_reloc = R_NDS32_INSN16;
9663 bfd_putb16 (re_insn16, contents + irel->r_offset);
9665 reloc = R_NDS32_9_PCREL_RELA;
9666 cond_reloc = R_NDS32_NONE;
9669 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9670 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9671 && foff < ACCURATE_14BIT_S1 - first_size))
9673 /* beqs label ; 15_PCREL */
9674 bfd_putb32 (re_insn, contents + irel->r_offset);
9676 reloc = R_NDS32_15_PCREL_RELA;
9677 cond_reloc = R_NDS32_NONE;
9679 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9680 && foff >= -CONSERVATIVE_16BIT_S1
9681 && foff < CONSERVATIVE_16BIT_S1)
9683 /* beqz label ; 17_PCREL */
9684 bfd_putb32 (re_insn, contents + irel->r_offset);
9686 reloc = R_NDS32_17_PCREL_RELA;
9687 cond_reloc = R_NDS32_NONE;
9692 /* Set all relocations. */
9693 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc);
9694 irel->r_addend = i2_irelfn->r_addend;
9696 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9698 cond_irelfn->r_addend = 0;
9700 if ((seq_len ^ *insn_len ) & 0x2)
9702 insn16 = NDS32_NOP16;
9703 bfd_putb16 (insn16, contents + irel->r_offset + 4);
9704 i2_irelfn->r_offset = 4;
9705 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9707 i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9711 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9716 /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */
9719 nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9720 Elf_Internal_Rela *internal_relocs, int *insn_len,
9721 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9722 Elf_Internal_Shdr *symtab_hdr)
9724 /* There are 5 variations for LONGJUMP3
9725 case 1: 2-4-4-2; 1st insn convertible, 16-bit on,
9726 optimize off or optimize for space
9727 bnes38 rt, ra, $1 ; LONGJUMP3
9728 sethi ta, hi20(symbol) ; HI20
9729 ori ta, ta, lo12(symbol) ; LO12S0
9733 case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed
9734 bnes38 rt, ra, $1 ; LONGJUMP3
9735 sethi ta, hi20(symbol) ; HI20
9736 ori ta, ta, lo12(symbol) ; LO12S0
9740 case 3: 4-4-4-2; 1st insn not convertible, 16-bit on,
9741 optimize off or optimize for space
9742 bne rt, ra, $1 ; LONGJUMP3
9743 sethi ta, hi20(symbol) ; HI20
9744 ori ta, ta, lo12(symbol) ; LO12S0
9748 case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care
9749 16-bit off if no INSN16
9750 bne rt, ra, $1 ; LONGJUMP3
9751 sethi ta, hi20(symbol) ; HI20
9752 ori ta, ta, lo12(symbol) ; LO12S0
9756 case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed
9757 16-bit off if no INSN16
9758 bne rt, ra, $1 ; LONGJUMP3
9759 sethi ta, hi20(symbol) ; HI20
9760 ori ta, ta, lo12(symbol) ; LO12S0
9764 /* Get the reloc for the address from which the register is
9765 being loaded. This reloc will tell us which function is
9766 actually being called. */
9767 enum elf_nds32_reloc_type checked_types[] =
9768 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9770 int reloc_off = 0, cond_removed = 0, convertible;
9772 int seq_len; /* Original length of instruction sequence. */
9773 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9774 int pic_ext_target = 0, first_size;
9776 bfd_signed_vma foff;
9777 uint32_t insn, re_insn = 0;
9778 uint16_t insn16, re_insn16 = 0;
9779 unsigned long reloc, cond_reloc;
9781 irelend = internal_relocs + sec->reloc_count;
9782 seq_len = GET_SEQ_LEN (irel->r_addend);
9783 laddr = irel->r_offset;
9784 *insn_len = seq_len;
9786 convertible = IS_1ST_CONVERT (irel->r_addend);
9793 /* Get all needed relocations. */
9795 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9796 R_NDS32_HI20_RELA, laddr + first_size);
9798 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9799 R_NDS32_LO12S0_ORI_RELA,
9800 laddr + first_size + 4);
9802 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
9805 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9806 checked_types[i], laddr);
9807 if (cond_irelfn != irelend)
9811 if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend)
9814 ("%B: warning: R_NDS32_LONGJUMP3 points to unrecognized"
9815 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9819 /* Get the value of the symbol referred to by the reloc. */
9820 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9823 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9824 || foff >= CONSERVATIVE_24BIT_S1)
9827 /* Get the all corresponding instructions. */
9828 if (first_size == 4)
9830 insn = bfd_getb32 (contents + laddr);
9831 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9835 insn16 = bfd_getb16 (contents + laddr);
9836 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9839 /* For simplicity of coding, we are going to modify the section
9840 contents, the section relocs, and the BFD symbol table. We
9841 must tell the rest of the code not to free up this
9842 information. It would be possible to instead create a table
9843 of changes which have to be made, as is done in coff-mips.c;
9844 that would be more work, but would require less memory when
9845 the linker is run. */
9847 if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size
9848 && foff < ACCURATE_8BIT_S1 - first_size)
9850 if (!(seq_len & 0x2))
9852 /* Don't convert it to 16-bit now, keep this as relaxable
9853 for ``label reloc; INSN1a''6. */
9854 /* Save comp_insn32 to buffer. */
9855 bfd_putb32 (re_insn, contents + irel->r_offset);
9857 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9858 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9859 cond_reloc = R_NDS32_INSN16;
9863 /* Not optimize for speed; convert sequence to 16-bit. */
9864 /* Save comp_insn16 to buffer. */
9865 bfd_putb16 (re_insn16, contents + irel->r_offset);
9867 reloc = R_NDS32_9_PCREL_RELA;
9868 cond_reloc = R_NDS32_NONE;
9872 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9873 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9874 && foff < ACCURATE_14BIT_S1 - first_size))
9876 /* beqs label ; 15_PCREL */
9877 bfd_putb32 (re_insn, contents + irel->r_offset);
9879 reloc = R_NDS32_15_PCREL_RELA;
9880 cond_reloc = R_NDS32_NONE;
9883 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9884 && foff >= -CONSERVATIVE_16BIT_S1
9885 && foff < CONSERVATIVE_16BIT_S1)
9887 /* beqz label ; 17_PCREL */
9888 bfd_putb32 (re_insn, contents + irel->r_offset);
9890 reloc = R_NDS32_17_PCREL_RELA;
9891 cond_reloc = R_NDS32_NONE;
9894 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
9895 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
9897 /* Relax to one of the following 3 variations
9899 case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize
9901 bnes38 rt, $1 ; LONGJUMP2
9905 case 4-4; 1st insn not convertible, others don't care
9906 bne rt, ra, $1 ; LONGJUMP2
9910 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9911 bne rt, ra, $1 ; LONGJUMP2
9915 /* Offset for first instruction. */
9917 /* Use j label as second instruction. */
9918 *insn_len = 4 + first_size;
9920 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9921 reloc = R_NDS32_LONGJUMP2;
9922 cond_reloc = R_NDS32_25_PLTREL;
9927 if (cond_removed == 1)
9929 /* Set all relocations. */
9930 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9931 irel->r_addend = hi_irelfn->r_addend;
9933 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9935 cond_irelfn->r_addend = 0;
9936 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9941 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
9942 irel->r_addend = irel->r_addend;
9943 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9947 if ((seq_len ^ *insn_len ) & 0x2)
9949 insn16 = NDS32_NOP16;
9950 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9951 lo_irelfn->r_offset = *insn_len;
9952 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9954 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9958 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9963 /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */
9966 nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9967 Elf_Internal_Rela *internal_relocs, int *insn_len,
9968 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9969 Elf_Internal_Shdr *symtab_hdr)
9971 /* The pattern for LONGCALL4. Support for function cse.
9972 sethi ta, hi20(symbol) ; LONGCALL4/HI20
9973 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9974 jral ta ; PTR_RES/EMPTY/INSN16 */
9978 Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel;
9979 Elf_Internal_Rela *irelend;
9980 int pic_ext_target = 0;
9981 bfd_signed_vma foff;
9983 irelend = internal_relocs + sec->reloc_count;
9984 laddr = irel->r_offset;
9986 /* Get the reloc for the address from which the register is
9987 being loaded. This reloc will tell us which function is
9988 actually being called. */
9989 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9990 R_NDS32_HI20_RELA, laddr);
9992 if (hi_irel == irelend)
9995 ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized"
9996 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10000 /* Get the value of the symbol referred to by the reloc. */
10001 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10004 /* This condition only happened when symbol is undefined. */
10005 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10006 || foff >= CONSERVATIVE_24BIT_S1)
10009 /* Relax to: jal symbol; 25_PCREL */
10010 /* For simplicity of coding, we are going to modify the section
10011 contents, the section relocs, and the BFD symbol table. We
10012 must tell the rest of the code not to free up this
10013 information. It would be possible to instead create a table
10014 of changes which have to be made, as is done in coff-mips.c;
10015 that would be more work, but would require less memory when
10016 the linker is run. */
10018 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10019 R_NDS32_PTR_RESOLVED, irel->r_addend);
10020 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10021 R_NDS32_EMPTY, irel->r_addend);
10023 if (ptr_irel == irelend || em_irel == irelend)
10026 ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized"
10027 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10030 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10031 insn = bfd_getb32 (contents + irel->r_addend);
10032 if (insn & 0x80000000)
10035 /* Replace the long call with a jal. */
10036 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10037 R_NDS32_25_PCREL_RELA);
10038 ptr_irel->r_addend = 1;
10040 /* We don't resolve this here but resolve it in relocate_section. */
10042 bfd_putb32 (insn, contents + em_irel->r_offset);
10045 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10047 /* If there is function cse, HI20 can not remove now. */
10048 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10049 R_NDS32_LONGCALL4, laddr);
10050 if (call_irel == irelend)
10054 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10057 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10058 R_NDS32_INSN16, irel->r_addend);
10059 if (insn_irel != irelend)
10060 insn_irel->r_info =
10061 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10066 /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */
10069 nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10070 Elf_Internal_Rela *internal_relocs, int *insn_len,
10071 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10072 Elf_Internal_Shdr *symtab_hdr)
10074 /* The pattern for LONGCALL5.
10075 bltz rt, .L1 ; LONGCALL5/17_PCREL
10076 jal symbol ; 25_PCREL
10081 Elf_Internal_Rela *cond_irel, *irelend;
10082 int pic_ext_target = 0;
10083 bfd_signed_vma foff;
10085 irelend = internal_relocs + sec->reloc_count;
10086 laddr = irel->r_offset;
10087 insn = bfd_getb32 (contents + laddr);
10089 /* Get the reloc for the address from which the register is
10090 being loaded. This reloc will tell us which function is
10091 actually being called. */
10093 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10094 R_NDS32_25_PCREL_RELA, irel->r_addend);
10095 if (cond_irel == irelend)
10098 ("%B: warning: R_NDS32_LONGCALL5 points to unrecognized"
10099 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10103 /* Get the value of the symbol referred to by the reloc. */
10104 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10107 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10108 || foff >= CONSERVATIVE_16BIT_S1)
10111 /* Relax to bgezal rt, label ; 17_PCREL
10112 or bltzal rt, label ; 17_PCREL */
10114 /* Convert to complimentary conditional call. */
10115 insn = CONVERT_CONDITION_CALL (insn);
10117 /* For simplicity of coding, we are going to modify the section
10118 contents, the section relocs, and the BFD symbol table. We
10119 must tell the rest of the code not to free up this
10120 information. It would be possible to instead create a table
10121 of changes which have to be made, as is done in coff-mips.c;
10122 that would be more work, but would require less memory when
10123 the linker is run. */
10125 /* Modify relocation and contents. */
10126 cond_irel->r_info =
10127 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA);
10129 /* Replace the long call with a bgezal. */
10130 bfd_putb32 (insn, contents + cond_irel->r_offset);
10133 /* Clean unnessary relocations. */
10134 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10136 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10137 R_NDS32_17_PCREL_RELA, laddr);
10138 cond_irel->r_info =
10139 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10144 /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */
10147 nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10148 Elf_Internal_Rela *internal_relocs, int *insn_len,
10149 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10150 Elf_Internal_Shdr *symtab_hdr)
10152 /* The pattern for LONGCALL6.
10153 bltz rt, .L1 ; LONGCALL6/17_PCREL
10154 sethi ta, hi20(symbol) ; HI20/PTR
10155 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10156 jral ta ; PTR_RES/EMPTY/INSN16
10161 Elf_Internal_Rela *em_irel, *cond_irel, *irelend;
10162 int pic_ext_target = 0;
10163 bfd_signed_vma foff;
10165 irelend = internal_relocs + sec->reloc_count;
10166 laddr = irel->r_offset;
10168 /* Get the reloc for the address from which the register is
10169 being loaded. This reloc will tell us which function is
10170 actually being called. */
10171 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10172 R_NDS32_EMPTY, irel->r_addend);
10174 if (em_irel == irelend)
10177 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10178 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10182 /* Get the value of the symbol referred to by the reloc. */
10183 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10186 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10187 || foff >= CONSERVATIVE_24BIT_S1)
10190 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10191 insn = bfd_getb32 (contents + irel->r_addend);
10192 if (insn & 0x80000000)
10195 insn = bfd_getb32 (contents + laddr);
10196 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10198 /* Relax to bgezal rt, label ; 17_PCREL
10199 or bltzal rt, label ; 17_PCREL */
10201 /* Convert to complimentary conditional call. */
10203 insn = CONVERT_CONDITION_CALL (insn);
10204 bfd_putb32 (insn, contents + em_irel->r_offset);
10207 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA);
10209 /* Set resolved relocation. */
10211 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10212 R_NDS32_PTR_RESOLVED, irel->r_addend);
10213 if (cond_irel == irelend)
10216 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10217 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10220 cond_irel->r_addend = 1;
10222 /* Clear relocations. */
10225 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10228 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10229 R_NDS32_17_PCREL_RELA, laddr);
10230 if (cond_irel != irelend)
10231 cond_irel->r_info =
10232 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10235 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10236 R_NDS32_INSN16, irel->r_addend);
10237 if (cond_irel != irelend)
10238 cond_irel->r_info =
10239 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10242 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
10244 /* Relax to the following instruction sequence
10245 bltz rt, .L1 ; LONGCALL2/17_PCREL
10246 jal symbol ; 25_PCREL/PTR_RES
10249 /* Convert instruction. */
10251 bfd_putb32 (insn, contents + em_irel->r_offset);
10253 /* Convert relocations. */
10254 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10255 R_NDS32_25_PCREL_RELA);
10257 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5);
10259 /* Set resolved relocation. */
10261 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10262 R_NDS32_PTR_RESOLVED, irel->r_addend);
10263 if (cond_irel == irelend)
10266 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10267 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10270 cond_irel->r_addend = 1;
10273 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10274 R_NDS32_INSN16, irel->r_addend);
10275 if (cond_irel != irelend)
10276 cond_irel->r_info =
10277 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10282 /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */
10285 nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10286 Elf_Internal_Rela *internal_relocs, int *insn_len,
10287 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10288 Elf_Internal_Shdr *symtab_hdr)
10290 /* The pattern for LONGJUMP4.
10291 sethi ta, hi20(symbol) ; LONGJUMP4/HI20
10292 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10293 jr ta ; PTR_RES/INSN16/EMPTY */
10296 int seq_len; /* Original length of instruction sequence. */
10298 Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend;
10299 int pic_ext_target = 0;
10300 bfd_signed_vma foff;
10302 irelend = internal_relocs + sec->reloc_count;
10303 seq_len = GET_SEQ_LEN (irel->r_addend);
10304 laddr = irel->r_offset;
10305 *insn_len = seq_len;
10307 /* Get the reloc for the address from which the register is
10308 being loaded. This reloc will tell us which function is
10309 actually being called. */
10311 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10312 R_NDS32_HI20_RELA, laddr);
10314 if (hi_irel == irelend)
10317 ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized"
10318 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10322 /* Get the value of the symbol referred to by the reloc. */
10323 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10326 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
10327 || foff < -CONSERVATIVE_24BIT_S1)
10330 /* Convert it to "j label", it may be converted to j8 in the final
10331 pass of relaxation. Therefore, we do not consider this currently. */
10332 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10333 R_NDS32_PTR_RESOLVED, irel->r_addend);
10334 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10335 R_NDS32_EMPTY, irel->r_addend);
10337 if (ptr_irel == irelend || em_irel == irelend)
10340 ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized"
10341 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10346 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA);
10347 ptr_irel->r_addend = 1;
10349 /* Write instruction. */
10351 bfd_putb32 (insn, contents + em_irel->r_offset);
10353 /* Clear relocations. */
10354 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10356 /* If there is function cse, HI20 can not remove now. */
10357 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10358 R_NDS32_LONGJUMP4, laddr);
10359 if (call_irel == irelend)
10363 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10369 /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */
10372 nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10373 Elf_Internal_Rela *internal_relocs, int *insn_len,
10374 int *seq_len, bfd_byte *contents,
10375 Elf_Internal_Sym *isymbuf,
10376 Elf_Internal_Shdr *symtab_hdr)
10378 /* There are 2 variations for LONGJUMP5
10379 case 2-4; 1st insn convertible, 16-bit on.
10380 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10381 j label ; 25_PCREL/INSN16
10384 case 4-4; 1st insn not convertible
10385 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10386 j label ; 25_PCREL/INSN16
10390 Elf_Internal_Rela *cond_irel, *irelend;
10391 int pic_ext_target = 0;
10393 bfd_signed_vma foff;
10394 uint32_t insn, re_insn = 0;
10395 uint16_t insn16, re_insn16 = 0;
10396 unsigned long reloc;
10398 enum elf_nds32_reloc_type checked_types[] =
10399 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10400 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10402 irelend = internal_relocs + sec->reloc_count;
10403 laddr = irel->r_offset;
10405 /* Get the reloc for the address from which the register is
10406 being loaded. This reloc will tell us which function is
10407 actually being called. */
10410 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10411 R_NDS32_25_PCREL_RELA, irel->r_addend);
10412 if (cond_irel == irelend)
10415 ("%B: warning: R_NDS32_LONGJUMP5 points to unrecognized"
10416 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10420 /* Get the value of the symbol referred to by the reloc. */
10421 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10424 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10425 || foff >= CONSERVATIVE_16BIT_S1)
10428 /* Get the all corresponding instructions. */
10429 insn = bfd_getb32 (contents + laddr);
10430 /* Check instruction size. */
10431 if (insn & 0x80000000)
10434 insn16 = insn >> 16;
10435 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10438 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10440 if (N32_OP6 (re_insn) == N32_OP6_BR1
10441 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10443 /* beqs label ; 15_PCREL. */
10444 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10445 reloc = R_NDS32_15_PCREL_RELA;
10447 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10448 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10450 /* beqz label ; 17_PCREL. */
10451 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10452 reloc = R_NDS32_17_PCREL_RELA;
10454 else if ( N32_OP6 (re_insn) == N32_OP6_BR3
10455 && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1)
10457 /* beqc label ; 9_PCREL. */
10458 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10459 reloc = R_NDS32_WORD_9_PCREL_RELA;
10464 /* Set all relocations. */
10465 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc);
10467 /* Clean relocations. */
10468 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10469 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10471 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10472 checked_types[i], laddr);
10473 if (cond_irel != irelend)
10476 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10478 /* If the branch instruction is 2 byte, it cannot remove
10479 directly. Only convert it to nop16 and remove it after
10480 checking alignment issue. */
10481 insn16 = NDS32_NOP16;
10482 bfd_putb16 (insn16, contents + laddr);
10483 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10486 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10495 /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */
10498 nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10499 Elf_Internal_Rela *internal_relocs, int *insn_len,
10500 int *seq_len, bfd_byte *contents,
10501 Elf_Internal_Sym *isymbuf,
10502 Elf_Internal_Shdr *symtab_hdr)
10504 /* There are 5 variations for LONGJUMP6
10505 case : 2-4-4-4; 1st insn convertible, 16-bit on.
10506 bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10507 sethi ta, hi20(symbol) ; HI20/PTR
10508 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10509 jr ta ; PTR_RES/INSN16/EMPTY
10512 case : 4-4-4-4; 1st insn not convertible, 16-bit on.
10513 bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10514 sethi ta, hi20(symbol) ; HI20/PTR
10515 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10516 jr ta ; PTR_RES/INSN16/EMPTY
10519 enum elf_nds32_reloc_type checked_types[] =
10520 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10521 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10523 int reloc_off = 0, cond_removed = 0;
10525 Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel;
10526 int pic_ext_target = 0;
10528 bfd_signed_vma foff;
10529 uint32_t insn, re_insn = 0;
10530 uint16_t insn16, re_insn16 = 0;
10531 unsigned long reloc;
10533 irelend = internal_relocs + sec->reloc_count;
10534 laddr = irel->r_offset;
10536 /* Get the reloc for the address from which the register is
10537 being loaded. This reloc will tell us which function is
10538 actually being called. */
10539 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10540 R_NDS32_EMPTY, irel->r_addend);
10542 if (em_irel == irelend)
10545 ("%B: warning: R_NDS32_LONGJUMP6 points to unrecognized"
10546 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10550 /* Get the value of the symbol referred to by the reloc. */
10551 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10554 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10555 || foff >= CONSERVATIVE_24BIT_S1)
10558 insn = bfd_getb32 (contents + laddr);
10559 /* Check instruction size. */
10560 if (insn & 0x80000000)
10563 insn16 = insn >> 16;
10564 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10567 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10569 /* For simplicity of coding, we are going to modify the section
10570 contents, the section relocs, and the BFD symbol table. We
10571 must tell the rest of the code not to free up this
10572 information. It would be possible to instead create a table
10573 of changes which have to be made, as is done in coff-mips.c;
10574 that would be more work, but would require less memory when
10575 the linker is run. */
10577 if (N32_OP6 (re_insn) == N32_OP6_BR1
10578 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10580 /* beqs label ; 15_PCREL */
10581 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10582 reloc = R_NDS32_15_PCREL_RELA;
10585 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10586 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10588 /* beqz label ; 17_PCREL */
10589 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10590 reloc = R_NDS32_17_PCREL_RELA;
10593 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
10594 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
10596 /* Relax to one of the following 2 variations
10598 case 2-4; 1st insn convertible, 16-bit on.
10599 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10600 j label ; 25_PCREL/INSN16
10603 case 4-4; 1st insn not convertible
10604 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10605 j label ; 25_PCREL/INSN16
10608 /* Use j label as second instruction. */
10610 reloc = R_NDS32_25_PCREL_RELA;
10611 bfd_putb32 (insn, contents + em_irel->r_offset);
10616 /* Set all relocations. */
10617 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc);
10620 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10621 R_NDS32_PTR_RESOLVED, em_irel->r_offset);
10622 cond_irel->r_addend = 1;
10624 /* Use INSN16 of first branch instruction to distinguish if keeping
10625 INSN16 of final instruction or not. */
10626 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10627 R_NDS32_INSN16, irel->r_offset);
10628 if (insn_irel == irelend)
10630 /* Clean the final INSN16. */
10632 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10633 R_NDS32_INSN16, em_irel->r_offset);
10634 insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10638 if (cond_removed == 1)
10642 /* Clear relocations. */
10643 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10645 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10648 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10649 checked_types[i], laddr);
10650 if (cond_irel != irelend)
10653 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10655 /* If the branch instruction is 2 byte, it cannot remove
10656 directly. Only convert it to nop16 and remove it after
10657 checking alignment issue. */
10658 insn16 = NDS32_NOP16;
10659 bfd_putb16 (insn16, contents + laddr);
10660 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10663 cond_irel->r_info =
10664 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10670 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
10671 R_NDS32_LONGJUMP5);
10677 /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */
10680 nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10681 Elf_Internal_Rela *internal_relocs, int *insn_len,
10682 int *seq_len, bfd_byte *contents,
10683 Elf_Internal_Sym *isymbuf,
10684 Elf_Internal_Shdr *symtab_hdr)
10686 /* There are 2 variations for LONGJUMP5
10687 case 2-4; 1st insn convertible, 16-bit on.
10688 movi55 ta, imm11 ; LONGJUMP7/INSN16
10689 beq rt, ta, label ; 15_PCREL
10691 case 4-4; 1st insn not convertible
10692 movi55 ta, imm11 ; LONGJUMP7/INSN16
10693 beq rt, ta, label ; 15_PCREL */
10696 Elf_Internal_Rela *cond_irel, *irelend, *insn_irel;
10697 int pic_ext_target = 0;
10698 bfd_signed_vma foff;
10699 uint32_t insn, re_insn = 0;
10703 irelend = internal_relocs + sec->reloc_count;
10704 laddr = irel->r_offset;
10706 /* Get the reloc for the address from which the register is
10707 being loaded. This reloc will tell us which function is
10708 actually being called. */
10711 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10712 R_NDS32_15_PCREL_RELA, irel->r_addend);
10713 if (cond_irel == irelend)
10716 ("%B: warning: R_NDS32_LONGJUMP7 points to unrecognized"
10717 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10721 /* Get the value of the symbol referred to by the reloc. */
10722 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10725 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1
10726 || foff >= CONSERVATIVE_8BIT_S1)
10729 /* Get the first instruction for its size. */
10730 insn = bfd_getb32 (contents + laddr);
10731 if (insn & 0x80000000)
10734 /* Get the immediate from movi55. */
10735 imm11 = N16_IMM5S (insn >> 16);
10739 /* Get the immediate from movi. */
10740 imm11 = N32_IMM20S (insn);
10743 /* Get the branch instruction. */
10744 insn = bfd_getb32 (contents + irel->r_addend);
10745 /* Convert instruction to BR3. */
10746 if ((insn >> 14) & 0x1)
10747 re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0);
10749 re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0);
10751 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10753 /* Set all relocations. */
10754 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10755 R_NDS32_WORD_9_PCREL_RELA);
10757 /* Clean relocations. */
10758 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10759 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10760 R_NDS32_INSN16, irel->r_offset);
10761 if (insn_irel != irelend)
10765 /* If the first insntruction is 16bit, convert it to nop16. */
10766 insn16 = NDS32_NOP16;
10767 bfd_putb16 (insn16, contents + laddr);
10768 insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10771 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10779 #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f)
10781 /* Relax LOADSTORE relocation for nds32_elf_relax_section. */
10784 nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd,
10785 asection *sec, Elf_Internal_Rela *irel,
10786 Elf_Internal_Rela *internal_relocs, int *insn_len,
10787 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10788 Elf_Internal_Shdr *symtab_hdr, int load_store_relax)
10790 int eliminate_sethi = 0, range_type;
10792 bfd_vma local_sda, laddr;
10793 int seq_len; /* Original length of instruction sequence. */
10795 Elf_Internal_Rela *hi_irelfn = NULL, *irelend;
10796 bfd_vma access_addr = 0;
10797 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10798 enum elf_nds32_reloc_type checked_types[] =
10799 { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20,
10800 R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20,
10801 R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20,
10802 R_NDS32_TLS_LE_HI20
10805 irelend = internal_relocs + sec->reloc_count;
10806 seq_len = GET_SEQ_LEN (irel->r_addend);
10807 laddr = irel->r_offset;
10808 *insn_len = seq_len;
10810 /* Get the high part relocation. */
10811 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10813 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10814 checked_types[i], laddr);
10815 if (hi_irelfn != irelend)
10819 if (hi_irelfn == irelend)
10822 ("%B: warning: R_NDS32_LOADSTORE points to unrecognized"
10823 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10827 range_type = GET_LOADSTORE_RANGE (irel->r_addend);
10828 nds32_elf_final_sda_base (sec->output_section->owner,
10829 link_info, &local_sda, FALSE);
10831 switch (ELF32_R_TYPE (hi_irelfn->r_info))
10833 case R_NDS32_HI20_RELA:
10834 insn = bfd_getb32 (contents + laddr);
10836 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10838 if (range_type == NDS32_LOADSTORE_IMM)
10840 struct elf_link_hash_entry *h = NULL;
10843 if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info)
10845 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
10846 h = elf_sym_hashes (abfd)[indx];
10849 if ((access_addr < CONSERVATIVE_20BIT)
10850 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10852 eliminate_sethi = 1;
10856 /* This is avoid to relax symbol address which is fixed
10857 relocations. Ex: _stack. */
10858 if (h && bfd_is_abs_section (h->root.u.def.section))
10862 if (!load_store_relax)
10865 /* Case for set gp register. */
10866 if (N32_RT5 (insn) == REG_GP)
10869 if (range_type == NDS32_LOADSTORE_FLOAT_S
10870 || range_type == NDS32_LOADSTORE_FLOAT_S)
10872 range_l = sdata_range[0][0];
10873 range_h = sdata_range[0][1];
10877 range_l = sdata_range[1][0];
10878 range_h = sdata_range[1][1];
10882 case R_NDS32_GOT_HI20:
10884 calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr);
10886 /* If this symbol is not in .got, the return value will be -1.
10887 Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE,
10888 a negative offset is allowed. */
10889 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10890 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10891 eliminate_sethi = 1;
10894 case R_NDS32_PLT_GOTREL_HI20:
10895 access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf,
10896 hi_irelfn, symtab_hdr);
10898 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10899 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10900 eliminate_sethi = 1;
10903 case R_NDS32_GOTOFF_HI20:
10905 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10907 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10908 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10909 eliminate_sethi = 1;
10912 case R_NDS32_GOTPC_HI20:
10913 /* The access_addr must consider r_addend of hi_irel. */
10914 access_addr = sec->output_section->vma + sec->output_offset
10915 + irel->r_offset + hi_irelfn->r_addend;
10917 if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT
10918 && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT)
10919 eliminate_sethi = 1;
10922 case R_NDS32_TLS_LE_HI20:
10924 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10925 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10926 access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10927 if ((range_type == NDS32_LOADSTORE_IMM)
10928 && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT
10929 && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT)
10930 eliminate_sethi = 1;
10937 /* Delete sethi instruction. */
10938 if (eliminate_sethi == 1
10939 || (local_sda <= access_addr && (access_addr - local_sda) < range_h)
10940 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
10942 hi_irelfn->r_info =
10943 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
10945 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10951 /* Relax LO12 relocation for nds32_elf_relax_section. */
10954 nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd,
10955 asection *sec, Elf_Internal_Rela *irel,
10956 Elf_Internal_Rela *internal_relocs, bfd_byte *contents,
10957 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr)
10960 bfd_vma local_sda, laddr;
10961 unsigned long reloc;
10962 bfd_vma access_addr;
10963 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10964 Elf_Internal_Rela *irelfn = NULL, *irelend;
10965 struct elf_link_hash_entry *h = NULL;
10968 /* For SDA base relative relaxation. */
10969 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
10970 &local_sda, FALSE);
10972 irelend = internal_relocs + sec->reloc_count;
10973 laddr = irel->r_offset;
10974 insn = bfd_getb32 (contents + laddr);
10976 if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI)
10979 access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10981 if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info)
10983 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
10984 h = elf_sym_hashes (abfd)[indx];
10987 if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT
10988 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10990 reloc = R_NDS32_20_RELA;
10991 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10992 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
10993 bfd_putb32 (insn, contents + laddr);
10995 /* This is avoid to relax symbol address which is fixed
10996 relocations. Ex: _stack. */
10997 else if (N32_OP6 (insn) == N32_OP6_ORI
10998 && h && bfd_is_abs_section (h->root.u.def.section))
11002 range_l = sdata_range[1][0];
11003 range_h = sdata_range[1][1];
11004 switch (ELF32_R_TYPE (irel->r_info))
11006 case R_NDS32_LO12S0_RELA:
11007 reloc = R_NDS32_SDA19S0_RELA;
11009 case R_NDS32_LO12S1_RELA:
11010 reloc = R_NDS32_SDA18S1_RELA;
11012 case R_NDS32_LO12S2_RELA:
11013 reloc = R_NDS32_SDA17S2_RELA;
11015 case R_NDS32_LO12S2_DP_RELA:
11016 range_l = sdata_range[0][0];
11017 range_h = sdata_range[0][1];
11018 reloc = R_NDS32_SDA12S2_DP_RELA;
11020 case R_NDS32_LO12S2_SP_RELA:
11021 range_l = sdata_range[0][0];
11022 range_h = sdata_range[0][1];
11023 reloc = R_NDS32_SDA12S2_SP_RELA;
11029 /* There are range_h and range_l because linker has to promise
11030 all sections move cross one page together. */
11031 if ((local_sda <= access_addr && (access_addr - local_sda) < range_h)
11032 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
11034 if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP)
11036 /* Maybe we should add R_NDS32_INSN16 reloc type here
11037 or manually do some optimization. sethi can't be
11038 eliminated when updating $gp so the relative ori
11039 needs to be preserved. */
11042 if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info),
11045 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11046 bfd_putb32 (insn, contents + laddr);
11048 irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11050 /* SDA17 must keep INSN16 for converting fp_as_gp. */
11051 if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA)
11053 ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE);
11060 /* Relax low part of PIC instruction pattern. */
11063 nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd,
11064 asection *sec, Elf_Internal_Rela *irel,
11065 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11066 Elf_Internal_Shdr *symtab_hdr)
11069 bfd_vma local_sda, laddr;
11070 bfd_signed_vma foff;
11071 unsigned long reloc;
11073 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11074 &local_sda, FALSE);
11075 laddr = irel->r_offset;
11076 insn = bfd_getb32 (contents + laddr);
11078 if (N32_OP6 (insn) != N32_OP6_ORI)
11081 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12)
11083 foff = calculate_got_memory_address (abfd, link_info, irel,
11084 symtab_hdr) - local_sda;
11085 reloc = R_NDS32_GOT20;
11087 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12)
11089 foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
11090 symtab_hdr) - local_sda;
11091 reloc = R_NDS32_PLT_GOTREL_LO20;
11093 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12)
11095 foff = calculate_memory_address (abfd, irel, isymbuf,
11096 symtab_hdr) - local_sda;
11097 reloc = R_NDS32_GOTOFF;
11099 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12)
11101 foff = local_sda - sec->output_section->vma + sec->output_offset
11102 + irel->r_offset + irel->r_addend;
11103 reloc = R_NDS32_GOTPC20;
11108 if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT))
11110 /* Turn into MOVI. */
11111 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11112 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11113 bfd_putb32 (insn, contents + laddr);
11117 /* Relax low part of LE TLS instruction pattern. */
11120 nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd,
11121 Elf_Internal_Rela *irel,
11122 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11123 Elf_Internal_Shdr *symtab_hdr)
11127 bfd_signed_vma foff;
11128 unsigned long reloc;
11130 laddr = irel->r_offset;
11131 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11132 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11133 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11134 insn = bfd_getb32 (contents + laddr);
11136 if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT
11137 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT)
11139 /* Pattern sethi-ori transform to movi. */
11140 reloc = R_NDS32_TLS_LE_20;
11141 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11142 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11143 bfd_putb32 (insn, contents + laddr);
11147 /* Relax LE TLS calculate address instruction pattern. */
11150 nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd,
11151 asection *sec, Elf_Internal_Rela *irel,
11152 Elf_Internal_Rela *internal_relocs,
11153 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11154 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11156 /* Local TLS non-pic
11157 sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20
11158 ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12
11159 add ra, ta, tp ; TLS_LE_ADD */
11163 bfd_signed_vma foff;
11164 Elf_Internal_Rela *i1_irelfn, *irelend;
11166 irelend = internal_relocs + sec->reloc_count;
11167 laddr = irel->r_offset;
11168 insn = bfd_getb32 (contents + laddr);
11169 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11170 R_NDS32_PTR_RESOLVED);
11171 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11172 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11173 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11175 /* The range is +/-16k. */
11176 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
11177 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
11179 /* Transform add to addi. */
11180 insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0);
11182 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
11184 bfd_putb32 (insn, contents + laddr);
11185 if (i1_irelfn != irelend)
11187 i1_irelfn->r_addend |= 1;
11193 /* Relax LE TLS load store instruction pattern. */
11196 nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd,
11197 asection *sec, Elf_Internal_Rela *irel,
11198 Elf_Internal_Rela *internal_relocs,
11199 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11200 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11205 bfd_signed_vma foff;
11206 Elf_Internal_Rela *i1_irelfn, *irelend;
11209 irelend = internal_relocs + sec->reloc_count;
11210 laddr = irel->r_offset;
11211 insn = bfd_getb32 (contents + laddr);
11212 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11213 R_NDS32_PTR_RESOLVED);
11214 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11215 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11216 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11218 switch ((N32_OP6 (insn) << 8) | (insn & 0xff))
11220 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11221 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11222 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11223 /* The range is +/-16k. */
11224 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
11225 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
11228 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11230 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
11234 /* Fall through. */
11235 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11236 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11237 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11238 /* The range is +/-32k. */
11239 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1
11240 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1)
11243 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11245 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1);
11249 /* Fall through. */
11250 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11251 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11252 /* The range is +/-64k. */
11253 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2
11254 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2)
11257 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11259 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2);
11263 /* Fall through. */
11270 bfd_putb32 (insn, contents + laddr);
11271 if (i1_irelfn != irelend)
11273 i1_irelfn->r_addend |= 1;
11279 /* Relax PTR relocation for nds32_elf_relax_section. */
11282 nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11283 Elf_Internal_Rela *internal_relocs, int *insn_len,
11284 int *seq_len, bfd_byte *contents)
11286 Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel;
11288 irelend = internal_relocs + sec->reloc_count;
11291 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11292 R_NDS32_PTR_RESOLVED, irel->r_addend);
11294 if (re_irel == irelend)
11297 ("%B: warning: R_NDS32_PTR points to unrecognized reloc at 0x%lx.",
11298 abfd, (long) irel->r_offset);
11302 if (re_irel->r_addend != 1)
11305 /* Pointed target is relaxed and no longer needs this void *,
11306 change the type to NONE. */
11307 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11309 /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does
11310 not exist, it means only count 1 and remove it directly. */
11311 /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */
11312 count_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11313 R_NDS32_PTR_COUNT);
11314 ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11316 if (count_irel != irelend)
11318 if (--count_irel->r_addend > 0)
11322 if (ptr_irel != irelend)
11325 /* If the PTR_COUNT is already 0, remove current instruction. */
11326 *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset);
11331 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11334 nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd,
11335 asection *sec, Elf_Internal_Rela *irel,
11336 Elf_Internal_Rela *internal_relocs,
11337 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11338 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11341 bfd_signed_vma foff;
11342 Elf_Internal_Rela *i1_irelfn, *irelend;
11343 bfd_vma local_sda, laddr;
11345 irelend = internal_relocs + sec->reloc_count;
11346 laddr = irel->r_offset;
11347 insn = bfd_getb32 (contents + laddr);
11349 /* FIXME: It's a little trouble to turn JRAL5 to JAL since
11350 we need additional space. It might be help if we could
11351 borrow some space from instructions to be eliminated
11352 such as sethi, ori, add. */
11353 if (insn & 0x80000000)
11356 if (nds32_elf_check_dup_relocs
11357 (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF))
11361 find_relocs_at_address (irel, internal_relocs, irelend,
11362 R_NDS32_PTR_RESOLVED);
11365 The boundary should be reduced since the .plt section hasn't
11366 been created and the address of specific entry is still unknown
11367 Maybe the range between the function call and the begin of the
11368 .text section can be used to decide if the .plt is in the range
11369 of function call. */
11371 if (N32_OP6 (insn) == N32_OP6_ALU1
11372 && N32_SUB5 (insn) == N32_ALU1_ADD)
11374 /* Get the value of the symbol referred to by the reloc. */
11375 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11376 &local_sda, FALSE);
11377 foff = (bfd_signed_vma) (calculate_plt_memory_address
11378 (abfd, link_info, isymbuf, irel,
11379 symtab_hdr) - local_sda);
11380 /* This condition only happened when symbol is undefined. */
11384 if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT)
11386 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11387 R_NDS32_PLT_GOTREL_LO19);
11389 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
11391 else if (N32_OP6 (insn) == N32_OP6_JREG
11392 && N32_SUB5 (insn) == N32_JREG_JRAL)
11394 /* Get the value of the symbol referred to by the reloc. */
11396 calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr);
11397 /* This condition only happened when symbol is undefined. */
11400 if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1)
11402 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL);
11408 bfd_putb32 (insn, contents + laddr);
11409 if (i1_irelfn != irelend)
11411 i1_irelfn->r_addend |= 1;
11416 /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */
11419 nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd,
11420 asection *sec, Elf_Internal_Rela *irel,
11421 Elf_Internal_Rela *internal_relocs,
11422 bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr,
11423 bfd_boolean *again)
11426 bfd_signed_vma foff;
11427 Elf_Internal_Rela *i1_irelfn, *irelend;
11428 bfd_vma local_sda, laddr;
11430 irelend = internal_relocs + sec->reloc_count;
11431 laddr = irel->r_offset;
11432 insn = bfd_getb32 (contents + laddr);
11433 if (insn & 0x80000000)
11436 if (nds32_elf_check_dup_relocs
11437 (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF))
11440 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11441 R_NDS32_PTR_RESOLVED);
11443 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11444 &local_sda, FALSE);
11445 foff = calculate_got_memory_address (abfd, link_info, irel,
11446 symtab_hdr) - local_sda;
11448 if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT)
11450 /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */
11451 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11453 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA);
11454 bfd_putb32 (insn, contents + laddr);
11455 if (i1_irelfn != irelend)
11457 i1_irelfn->r_addend |= 1;
11463 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11466 nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd,
11467 asection *sec, Elf_Internal_Rela *irel,
11468 Elf_Internal_Rela *internal_relocs,
11469 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11470 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11472 int opc_insn_gotoff;
11474 bfd_signed_vma foff;
11475 Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend;
11476 bfd_vma local_sda, laddr;
11478 irelend = internal_relocs + sec->reloc_count;
11479 laddr = irel->r_offset;
11480 insn = bfd_getb32 (contents + laddr);
11482 if (insn & 0x80000000)
11485 if (nds32_elf_check_dup_relocs
11486 (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF))
11489 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11490 R_NDS32_PTR_RESOLVED);
11491 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11492 &local_sda, FALSE);
11493 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11494 foff = foff - local_sda;
11496 if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT)
11499 /* Concatenate opcode and sub-opcode for switch case.
11500 It may be MEM or ALU1. */
11501 opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff);
11502 switch (opc_insn_gotoff)
11504 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11505 /* 4-byte aligned. */
11506 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11508 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11510 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11511 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
11513 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11515 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11516 /* 2-byte aligned. */
11517 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
11519 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11521 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11522 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18));
11524 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11526 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11527 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19));
11529 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11531 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11532 /* 1-byte aligned. */
11533 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
11535 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11537 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11538 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19));
11540 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11542 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11543 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
11545 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11547 case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD:
11548 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
11550 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11556 bfd_putb32 (insn, contents + laddr);
11557 if (i1_irelfn != irelend)
11559 i1_irelfn->r_addend |= 1;
11562 if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11563 R_NDS32_INSN16)) != irelend)
11564 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11569 nds32_relax_adjust_label (bfd *abfd, asection *sec,
11570 Elf_Internal_Rela *internal_relocs,
11571 bfd_byte *contents,
11572 nds32_elf_blank_t **relax_blank_list,
11573 int optimize, int opt_size)
11575 /* This code block is used to adjust 4-byte alignment by relax a pair
11576 of instruction a time.
11578 It recognizes three types of relocations.
11579 1. R_NDS32_LABEL - a aligment.
11580 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit.
11581 3. is_16bit_NOP () - remove a 16-bit instruction. */
11583 /* TODO: It seems currently implementation only support 4-byte aligment.
11584 We should handle any-aligment. */
11586 Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel;
11587 Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL;
11588 Elf_Internal_Rela rel_temp;
11589 Elf_Internal_Rela *irelend;
11593 /* Checking for branch relaxation relies on the relocations to
11594 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
11595 nds32_insertion_sort (internal_relocs, sec->reloc_count,
11596 sizeof (Elf_Internal_Rela), compar_reloc);
11598 irelend = internal_relocs + sec->reloc_count;
11600 /* Force R_NDS32_LABEL before R_NDS32_INSN16. */
11601 /* FIXME: Can we generate the right order in assembler?
11602 So we don't have to swapping them here. */
11604 for (label_rel = internal_relocs, insn_rel = internal_relocs;
11605 label_rel < irelend; label_rel++)
11607 if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL)
11610 /* Find the first reloc has the same offset with label_rel. */
11611 while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset)
11614 for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset;
11616 /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same
11618 if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16)
11621 if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset
11622 && insn_rel < label_rel)
11624 /* Swap the two reloc if the R_NDS32_INSN16 is
11625 before R_NDS32_LABEL. */
11626 memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela));
11627 memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela));
11628 memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela));
11634 /* If there were a sequence of R_NDS32_LABEL end up with .align 2
11635 or higher, remove other R_NDS32_LABEL with lower alignment.
11636 If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted,
11637 then the R_NDS32_LABEL sequence is broke. */
11638 for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++)
11640 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL)
11642 if (label_rel == NULL)
11644 if (tmp_rel->r_addend < 2)
11645 label_rel = tmp_rel;
11648 else if (tmp_rel->r_addend > 1)
11650 /* Remove all LABEL relocation from label_rel to tmp_rel
11651 including relocations with same offset as tmp_rel. */
11652 for (tmp2_rel = label_rel; tmp2_rel < tmp_rel
11653 || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++)
11655 if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL
11656 && tmp2_rel->r_addend < 2)
11658 ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info),
11664 else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel)
11666 /* A new INSN16 which can be converted, so clear label_rel. */
11667 if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs,
11669 || is_16bit_NOP (abfd, sec, tmp_rel))
11676 /* Optimized for speed and nothing has not been relaxed.
11677 It's time to align labels.
11678 We may convert a 16-bit instruction right before a label to
11679 32-bit, in order to align the label if necessary
11680 all reloc entries has been sorted by r_offset. */
11681 for (irel = internal_relocs; irel < irelend; irel++)
11683 if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16
11684 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL)
11687 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16)
11689 /* A new INSN16 found, resize the old one. */
11690 if (is_convert_32_to_16
11691 (abfd, sec, irel, internal_relocs, irelend, &insn16)
11692 || is_16bit_NOP (abfd, sec, irel))
11696 /* Previous INSN16 reloc exists, reduce its
11698 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11701 nds32_elf_write_16 (abfd, contents, insn_rel,
11702 internal_relocs, irelend, insn16);
11704 if (!insert_nds32_elf_blank_recalc_total
11705 (relax_blank_list, insn_rel->r_offset + 2, 2))
11708 else if (is_16bit_NOP (abfd, sec, insn_rel))
11710 if (!insert_nds32_elf_blank_recalc_total
11711 (relax_blank_list, insn_rel->r_offset, 2))
11715 ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE);
11717 /* Save the new one for later use. */
11721 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11724 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL)
11726 /* Search for label. */
11727 int force_relax = 0;
11729 /* Label on 16-bit instruction or optimization
11730 needless, just reset this reloc. */
11731 insn16 = bfd_getb16 (contents + irel->r_offset);
11732 if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000)))
11735 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11740 irel->r_offset - get_nds32_elf_blank_total (relax_blank_list,
11741 irel->r_offset, 1);
11745 /* Check if there is case which can not be aligned. */
11746 if (irel->r_addend == 2 && address & 0x2)
11751 /* Try to align this label. */
11753 if ((irel->r_addend & 0x1f) < 2)
11755 /* Check if there is a INSN16 at the same address.
11756 Label_rel always seats before insn_rel after
11759 /* Search for INSN16 at LABEL location. If INSN16 is at
11760 same location and this LABEL alignment is lower than 2,
11761 the INSN16 can be converted to 2-byte. */
11762 for (tmp_rel = irel;
11763 tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset;
11766 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16
11767 && (is_convert_32_to_16
11768 (abfd, sec, tmp_rel, internal_relocs,
11770 || is_16bit_NOP (abfd, sec, tmp_rel)))
11778 if (force_relax || irel->r_addend == 1 || address & 0x2)
11780 /* Label not aligned. */
11781 /* Previous reloc exists, reduce its size to 16-bit. */
11782 if (is_convert_32_to_16 (abfd, sec, insn_rel,
11783 internal_relocs, irelend, &insn16))
11785 nds32_elf_write_16 (abfd, contents, insn_rel,
11786 internal_relocs, irelend, insn16);
11788 if (!insert_nds32_elf_blank_recalc_total
11789 (relax_blank_list, insn_rel->r_offset + 2, 2))
11792 else if (is_16bit_NOP (abfd, sec, insn_rel))
11794 if (!insert_nds32_elf_blank_recalc_total
11795 (relax_blank_list, insn_rel->r_offset, 2))
11800 /* INSN16 reloc is used. */
11806 sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0);
11807 if (insn_rel && (address & 0x2 || opt_size))
11809 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11812 nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs,
11814 if (!insert_nds32_elf_blank_recalc_total
11815 (relax_blank_list, insn_rel->r_offset + 2, 2))
11817 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11820 else if (is_16bit_NOP (abfd, sec, insn_rel))
11822 if (!insert_nds32_elf_blank_recalc_total
11823 (relax_blank_list, insn_rel->r_offset, 2))
11825 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11833 /* Pick relaxation round. */
11836 nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again,
11837 struct elf_nds32_link_hash_table *table,
11838 struct bfd_link_info *link_info)
11840 static asection *final_sec, *first_sec = NULL;
11841 static bfd_boolean normal_again = FALSE;
11842 static bfd_boolean set = FALSE;
11843 static bfd_boolean first = TRUE;
11844 int round_table[] = {
11845 NDS32_RELAX_NORMAL_ROUND,
11846 NDS32_RELAX_JUMP_IFC_ROUND,
11847 NDS32_RELAX_EX9_BUILD_ROUND,
11848 NDS32_RELAX_EX9_REPLACE_ROUND,
11850 static int pass = 0;
11851 static int relax_round;
11853 /* The new round. */
11854 if (init && first_sec == sec)
11857 normal_again = FALSE;
11862 /* Run an empty run to get the final section. */
11863 relax_round = NDS32_RELAX_EMPTY_ROUND;
11865 /* It has to enter relax again because we can
11866 not make sure what the final turn is. */
11875 /* Not reenter yet. */
11877 return relax_round;
11880 relax_round = round_table[pass];
11882 if (!init && relax_round == NDS32_RELAX_NORMAL_ROUND && *again)
11883 normal_again = TRUE;
11885 if (!init && final_sec == sec)
11887 switch (relax_round)
11889 case NDS32_RELAX_NORMAL_ROUND:
11892 /* Normal relaxation done. */
11893 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11898 else if (table->target_optimize & NDS32_RELAX_EX9_ON)
11900 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11903 else if (table->ex9_import_file)
11905 /* Import ex9 table. */
11906 if (table->update_ex9_table)
11907 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11909 pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */
11910 nds32_elf_ex9_import_table (link_info);
11915 case NDS32_RELAX_JUMP_IFC_ROUND:
11916 if (!nds32_elf_ifc_finish (link_info))
11917 _bfd_error_handler (_("error: Jump IFC Fail."));
11918 if (table->target_optimize & NDS32_RELAX_EX9_ON)
11924 case NDS32_RELAX_EX9_BUILD_ROUND:
11925 nds32_elf_ex9_finish (link_info);
11929 case NDS32_RELAX_EX9_REPLACE_ROUND:
11930 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11932 /* Do jump IFC optimization again. */
11933 if (!nds32_elf_ifc_finish (link_info))
11934 _bfd_error_handler (_("error: Jump IFC Fail."));
11942 return relax_round;
11946 nds32_elf_relax_section (bfd *abfd, asection *sec,
11947 struct bfd_link_info *link_info, bfd_boolean *again)
11949 nds32_elf_blank_t *relax_blank_list = NULL;
11950 Elf_Internal_Shdr *symtab_hdr;
11951 Elf_Internal_Rela *internal_relocs;
11952 Elf_Internal_Rela *irel;
11953 Elf_Internal_Rela *irelend;
11954 Elf_Internal_Sym *isymbuf = NULL;
11955 bfd_byte *contents = NULL;
11956 bfd_boolean result = TRUE;
11962 /* Target dependnet option. */
11963 struct elf_nds32_link_hash_table *table;
11964 int load_store_relax;
11967 relax_blank_list = NULL;
11971 /* Nothing to do for
11972 * relocatable link or
11973 * non-relocatable section or
11974 * non-code section or
11976 * no reloc entry. */
11977 if (bfd_link_relocatable (link_info)
11978 || (sec->flags & SEC_RELOC) == 0
11979 || (sec->flags & SEC_EXCLUDE) == 1
11980 || (sec->flags & SEC_CODE) == 0
11984 /* 09.12.11 Workaround. */
11985 /* We have to adjust align for R_NDS32_LABEL if needed.
11986 The adjust approach only can fix 2-byte align once. */
11987 if (sec->alignment_power > 2)
11990 /* The optimization type to do. */
11992 table = nds32_elf_hash_table (link_info);
11993 relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info);
11994 switch (relax_round)
11996 case NDS32_RELAX_JUMP_IFC_ROUND:
11997 /* Here is the entrance of ifc jump relaxation. */
11998 if (!nds32_elf_ifc_calc (link_info, abfd, sec))
12000 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12003 case NDS32_RELAX_EX9_BUILD_ROUND:
12004 /* Here is the entrance of ex9 relaxation. There are two pass of
12005 ex9 relaxation. The one is to traverse all instructions and build
12006 the hash table. The other one is to compare instructions and replace
12008 if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info))
12010 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12013 case NDS32_RELAX_EX9_REPLACE_ROUND:
12014 if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec))
12018 case NDS32_RELAX_EMPTY_ROUND:
12019 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12022 case NDS32_RELAX_NORMAL_ROUND:
12024 if (sec->reloc_count == 0)
12029 /* The begining of general relaxation. */
12031 if (is_SDA_BASE_set == 0)
12034 is_SDA_BASE_set = 1;
12035 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
12037 relax_range_measurement (abfd);
12040 if (is_ITB_BASE_set == 0)
12042 /* Set the _ITB_BASE_. */
12043 if (!nds32_elf_ex9_itb_base (link_info))
12045 _bfd_error_handler (_("%B: error: Cannot set _ITB_BASE_"), abfd);
12046 bfd_set_error (bfd_error_bad_value);
12050 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12051 /* Relocations MUST be kept in memory, because relaxation adjust them. */
12052 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
12053 TRUE /* keep_memory */);
12054 if (internal_relocs == NULL)
12057 irelend = internal_relocs + sec->reloc_count;
12058 irel = find_relocs_at_address (internal_relocs, internal_relocs,
12059 irelend, R_NDS32_RELAX_ENTRY);
12061 if (irel == irelend)
12064 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
12066 if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG)
12068 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12072 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG)
12075 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG)
12079 load_store_relax = table->load_store_relax;
12081 /* Get symbol table and section content. */
12082 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12083 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12086 /* Do relax loop only when finalize is not done.
12087 Take care of relaxable relocs except INSN16. */
12088 for (irel = internal_relocs; irel < irelend; irel++)
12090 int seq_len; /* Original length of instruction sequence. */
12091 int insn_len = 0; /* Final length of instruction sequence. */
12092 bfd_boolean removed;
12095 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
12096 && (irel->r_addend & 0x1f) >= 2)
12099 /* Relocation Types
12100 R_NDS32_LONGCALL1 53
12101 R_NDS32_LONGCALL2 54
12102 R_NDS32_LONGCALL3 55
12103 R_NDS32_LONGJUMP1 56
12104 R_NDS32_LONGJUMP2 57
12105 R_NDS32_LONGJUMP3 58
12106 R_NDS32_LOADSTORE 59 */
12107 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1
12108 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE)
12109 seq_len = GET_SEQ_LEN (irel->r_addend);
12111 /* Relocation Types
12112 R_NDS32_LONGCALL4 107
12113 R_NDS32_LONGCALL5 108
12114 R_NDS32_LONGCALL6 109
12115 R_NDS32_LONGJUMP4 110
12116 R_NDS32_LONGJUMP5 111
12117 R_NDS32_LONGJUMP6 112
12118 R_NDS32_LONGJUMP7 113 */
12119 else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4
12120 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7)
12123 /* Relocation Types
12124 R_NDS32_LO12S0_RELA 30
12125 R_NDS32_LO12S1_RELA 29
12126 R_NDS32_LO12S2_RELA 28
12127 R_NDS32_LO12S2_SP_RELA 71
12128 R_NDS32_LO12S2_DP_RELA 70
12129 R_NDS32_GOT_LO12 46
12130 R_NDS32_GOTOFF_LO12 50
12131 R_NDS32_PLTREL_LO12 65
12132 R_NDS32_PLT_GOTREL_LO12 67
12133 R_NDS32_17IFC_PCREL_RELA 96
12134 R_NDS32_GOT_SUFF 193
12135 R_NDS32_GOTOFF_SUFF 194
12136 R_NDS32_PLT_GOT_SUFF 195
12137 R_NDS32_MULCALL_SUFF 196
12139 else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA
12140 && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA)
12141 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA
12142 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA
12143 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12
12144 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12
12145 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12
12146 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12
12147 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12
12148 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF
12149 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR)
12150 || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12151 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12
12152 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD
12153 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS)
12158 insn_len = seq_len;
12161 switch (ELF32_R_TYPE (irel->r_info))
12163 case R_NDS32_LONGCALL1:
12164 removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs,
12165 &insn_len, contents, isymbuf,
12168 case R_NDS32_LONGCALL2:
12169 removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs,
12170 &insn_len, contents, isymbuf,
12173 case R_NDS32_LONGCALL3:
12174 removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs,
12175 &insn_len, contents, isymbuf,
12178 case R_NDS32_LONGJUMP1:
12179 removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs,
12180 &insn_len, contents, isymbuf,
12183 case R_NDS32_LONGJUMP2:
12184 removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs,
12185 &insn_len, contents, isymbuf,
12188 case R_NDS32_LONGJUMP3:
12189 removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs,
12190 &insn_len, contents, isymbuf,
12193 case R_NDS32_LONGCALL4:
12194 removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs,
12195 &insn_len, contents, isymbuf,
12198 case R_NDS32_LONGCALL5:
12199 removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs,
12200 &insn_len, contents, isymbuf,
12203 case R_NDS32_LONGCALL6:
12204 removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs,
12205 &insn_len, contents, isymbuf,
12208 case R_NDS32_LONGJUMP4:
12209 removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs,
12210 &insn_len, contents, isymbuf,
12213 case R_NDS32_LONGJUMP5:
12214 removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs,
12215 &insn_len, &seq_len, contents,
12216 isymbuf, symtab_hdr);
12218 case R_NDS32_LONGJUMP6:
12219 removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs,
12220 &insn_len, &seq_len, contents,
12221 isymbuf, symtab_hdr);
12223 case R_NDS32_LONGJUMP7:
12224 removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs,
12225 &insn_len, &seq_len, contents,
12226 isymbuf, symtab_hdr);
12228 case R_NDS32_LOADSTORE:
12229 removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel,
12230 internal_relocs, &insn_len,
12231 contents, isymbuf, symtab_hdr,
12234 case R_NDS32_LO12S0_RELA:
12235 case R_NDS32_LO12S1_RELA:
12236 case R_NDS32_LO12S2_DP_RELA:
12237 case R_NDS32_LO12S2_SP_RELA:
12238 case R_NDS32_LO12S2_RELA:
12239 /* Relax for low part. */
12240 nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs,
12241 contents, isymbuf, symtab_hdr);
12243 /* It is impossible to delete blank, so just continue. */
12245 case R_NDS32_GOT_LO12:
12246 case R_NDS32_GOTOFF_LO12:
12247 case R_NDS32_PLTREL_LO12:
12248 case R_NDS32_PLT_GOTREL_LO12:
12249 case R_NDS32_GOTPC_LO12:
12250 /* Relax for PIC gp-relative low part. */
12251 nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents,
12252 isymbuf, symtab_hdr);
12254 /* It is impossible to delete blank, so just continue. */
12256 case R_NDS32_TLS_LE_LO12:
12257 /* Relax for LE TLS low part. */
12258 nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents,
12259 isymbuf, symtab_hdr);
12261 /* It is impossible to delete blank, so just continue. */
12263 case R_NDS32_TLS_LE_ADD:
12264 nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs,
12265 contents, isymbuf, symtab_hdr, again);
12266 /* It is impossible to delete blank, so just continue. */
12268 case R_NDS32_TLS_LE_LS:
12269 nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs,
12270 contents, isymbuf, symtab_hdr, again);
12273 removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs,
12274 &insn_len, &seq_len, contents);
12276 case R_NDS32_PLT_GOT_SUFF:
12277 nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel,
12278 internal_relocs, contents,
12279 isymbuf, symtab_hdr, again);
12280 /* It is impossible to delete blank, so just continue. */
12282 case R_NDS32_GOT_SUFF:
12283 nds32_elf_relax_got_suff (link_info, abfd, sec, irel,
12284 internal_relocs, contents,
12285 symtab_hdr, again);
12286 /* It is impossible to delete blank, so just continue. */
12288 case R_NDS32_GOTOFF_SUFF:
12289 nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel,
12290 internal_relocs, contents,
12291 isymbuf, symtab_hdr, again);
12292 /* It is impossible to delete blank, so just continue. */
12298 if (removed && seq_len - insn_len > 0)
12300 if (!insert_nds32_elf_blank
12301 (&relax_blank_list, irel->r_offset + insn_len,
12302 seq_len - insn_len))
12308 calc_nds32_blank_total (relax_blank_list);
12310 if (table->relax_fp_as_gp)
12312 if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs,
12316 if (*again == FALSE)
12318 if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs,
12324 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12326 if (*again == FALSE)
12328 if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents,
12329 &relax_blank_list, optimize, opt_size))
12333 /* It doesn't matter optimize_for_space_no_align anymore.
12334 If object file is assembled with flag '-Os',
12335 the we don't adjust jump-destination on 4-byte boundary. */
12337 if (relax_blank_list)
12339 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12340 relax_blank_list = NULL;
12343 if (*again == FALSE)
12345 /* Closing the section, so we don't relax it anymore. */
12346 bfd_vma sec_size_align;
12347 Elf_Internal_Rela *tmp_rel;
12349 /* Pad to alignment boundary. Only handle current section alignment. */
12350 sec_size_align = (sec->size + (~((-1U) << sec->alignment_power)))
12351 & ((-1U) << sec->alignment_power);
12352 if ((sec_size_align - sec->size) & 0x2)
12354 insn16 = NDS32_NOP16;
12355 bfd_putb16 (insn16, contents + sec->size);
12359 while (sec_size_align != sec->size)
12361 insn = NDS32_NOP32;
12362 bfd_putb32 (insn, contents + sec->size);
12366 tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs,
12367 irelend, R_NDS32_RELAX_ENTRY);
12368 if (tmp_rel != irelend)
12369 tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG;
12371 clean_nds32_elf_blank ();
12375 if (internal_relocs != NULL
12376 && elf_section_data (sec)->relocs != internal_relocs)
12377 free (internal_relocs);
12379 if (contents != NULL
12380 && elf_section_data (sec)->this_hdr.contents != contents)
12383 if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf)
12393 static struct bfd_elf_special_section const nds32_elf_special_sections[] =
12395 {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE},
12396 {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE},
12401 nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED,
12402 struct bfd_link_info *info,
12403 void *finfo ATTRIBUTE_UNUSED,
12404 bfd_boolean (*func) (void *, const char *,
12405 Elf_Internal_Sym *,
12407 struct elf_link_hash_entry *)
12410 FILE *sym_ld_script = NULL;
12411 struct elf_nds32_link_hash_table *table;
12413 table = nds32_elf_hash_table (info);
12414 sym_ld_script = table->sym_ld_script;
12416 if (check_start_export_sym)
12417 fprintf (sym_ld_script, "}\n");
12422 static enum elf_reloc_type_class
12423 nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
12424 const asection *rel_sec ATTRIBUTE_UNUSED,
12425 const Elf_Internal_Rela *rela)
12427 switch ((int) ELF32_R_TYPE (rela->r_info))
12429 case R_NDS32_RELATIVE:
12430 return reloc_class_relative;
12431 case R_NDS32_JMP_SLOT:
12432 return reloc_class_plt;
12434 return reloc_class_copy;
12436 return reloc_class_normal;
12440 /* Put target dependent option into info hash table. */
12442 bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info,
12443 int relax_fp_as_gp,
12444 int eliminate_gc_relocs,
12445 FILE * sym_ld_script, int load_store_relax,
12446 int target_optimize, int relax_status,
12447 int relax_round, FILE * ex9_export_file,
12448 FILE * ex9_import_file,
12449 int update_ex9_table, int ex9_limit,
12450 bfd_boolean ex9_loop_aware,
12451 bfd_boolean ifc_loop_aware)
12453 struct elf_nds32_link_hash_table *table;
12455 table = nds32_elf_hash_table (link_info);
12459 table->relax_fp_as_gp = relax_fp_as_gp;
12460 table->eliminate_gc_relocs = eliminate_gc_relocs;
12461 table->sym_ld_script = sym_ld_script;
12462 table ->load_store_relax = load_store_relax;
12463 table->target_optimize = target_optimize;
12464 table->relax_status = relax_status;
12465 table->relax_round = relax_round;
12466 table->ex9_export_file = ex9_export_file;
12467 table->ex9_import_file = ex9_import_file;
12468 table->update_ex9_table = update_ex9_table;
12469 table->ex9_limit = ex9_limit;
12470 table->ex9_loop_aware = ex9_loop_aware;
12471 table->ifc_loop_aware = ifc_loop_aware;
12474 /* These functions and data-structures are used for fp-as-gp
12477 #define FAG_THRESHOLD 3 /* At least 3 gp-access. */
12478 /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between
12479 the read-only section and read-write section. */
12480 #define FAG_WINDOW (508 - 32)
12482 /* An nds32_fag represent a gp-relative access.
12483 We find best fp-base by using a sliding window
12484 to find a base address which can cover most gp-access. */
12487 struct nds32_fag *next; /* NULL-teminated linked list. */
12488 bfd_vma addr; /* The address of this fag. */
12489 Elf_Internal_Rela **relas; /* The relocations associated with this fag.
12490 It is used for applying FP7U2_FLAG. */
12491 int count; /* How many times this address is referred.
12492 There should be exactly `count' relocations
12494 int relas_capcity; /* The buffer size of relas.
12495 We use an array instead of linked-list,
12496 and realloc is used to adjust buffer size. */
12500 nds32_fag_init (struct nds32_fag *head)
12502 memset (head, 0, sizeof (struct nds32_fag));
12506 nds32_fag_verify (struct nds32_fag *head)
12508 struct nds32_fag *iter;
12509 struct nds32_fag *prev;
12515 if (prev && prev->addr >= iter->addr)
12516 puts ("Bug in fp-as-gp insertion.");
12522 /* Insert a fag in ascending order.
12523 If a fag of the same address already exists,
12524 they are chained by relas array. */
12527 nds32_fag_insert (struct nds32_fag *head, bfd_vma addr,
12528 Elf_Internal_Rela * rel)
12530 struct nds32_fag *iter;
12531 struct nds32_fag *new_fag;
12532 const int INIT_RELAS_CAP = 4;
12535 iter->next && iter->next->addr <= addr;
12537 /* Find somewhere to insert. */ ;
12539 /* `iter' will be equal to `head' if the list is empty. */
12540 if (iter != head && iter->addr == addr)
12542 /* The address exists in the list.
12543 Insert `rel' into relocation list, relas. */
12545 /* Check whether relas is big enough. */
12546 if (iter->count >= iter->relas_capcity)
12548 iter->relas_capcity *= 2;
12549 iter->relas = bfd_realloc
12550 (iter->relas, iter->relas_capcity * sizeof (void *));
12552 iter->relas[iter->count++] = rel;
12556 /* This is a new address. Create a fag node for it. */
12557 new_fag = bfd_malloc (sizeof (struct nds32_fag));
12558 memset (new_fag, 0, sizeof (*new_fag));
12559 new_fag->addr = addr;
12560 new_fag->count = 1;
12561 new_fag->next = iter->next;
12562 new_fag->relas_capcity = INIT_RELAS_CAP;
12563 new_fag->relas = (Elf_Internal_Rela **)
12564 bfd_malloc (new_fag->relas_capcity * sizeof (void *));
12565 new_fag->relas[0] = rel;
12566 iter->next = new_fag;
12568 nds32_fag_verify (head);
12572 nds32_fag_free_list (struct nds32_fag *head)
12574 struct nds32_fag *iter;
12579 struct nds32_fag *tmp = iter;
12587 /* Find the best fp-base address.
12588 The relocation associated with that address is returned,
12589 so we can track the symbol instead of a fixed address.
12591 When relaxation, the address of an datum may change,
12592 because a text section is shrinked, so the data section
12593 moves forward. If the aligments of text and data section
12594 are different, their distance may change too.
12595 Therefore, tracking a fixed address is not appriate. */
12598 nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp)
12600 struct nds32_fag *base; /* First fag in the window. */
12601 struct nds32_fag *last; /* First fag outside the window. */
12602 int accu = 0; /* Usage accumulation. */
12603 struct nds32_fag *best; /* Best fag. */
12604 int baccu = 0; /* Best accumulation. */
12606 /* Use first fag for initial, and find the last fag in the window.
12608 In each iteration, we could simply subtract previous fag
12609 and accumulate following fags which are inside the window,
12610 untill we each the end. */
12612 if (head->next == NULL)
12618 /* Initialize base. */
12622 last && last->addr < base->addr + FAG_WINDOW;
12624 accu += last->count;
12628 /* Record the best base in each iteration. */
12631 accu -= base->count;
12633 /* Account fags in window. */
12634 for (/* Nothing. */;
12635 last && last->addr < base->addr + FAG_WINDOW;
12637 accu += last->count;
12639 /* A better fp-base? */
12652 /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses,
12653 so we can convert it fo fp-relative access later.
12654 `best_fag' is the best fp-base. Only those inside the window
12655 of best_fag is applied the flag. */
12658 nds32_fag_mark_relax (struct bfd_link_info *link_info,
12659 bfd *abfd, struct nds32_fag *best_fag,
12660 Elf_Internal_Rela *internal_relocs,
12661 Elf_Internal_Rela *irelend)
12663 struct nds32_fag *ifag;
12664 bfd_vma best_fpbase, gp;
12667 output_bfd = abfd->sections->output_section->owner;
12668 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
12669 best_fpbase = best_fag->addr;
12671 if (best_fpbase > gp + sdata_range[1][1]
12672 || best_fpbase < gp - sdata_range[1][0])
12675 /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag,
12676 so we know they can be converted to lwi37.fp. */
12677 for (ifag = best_fag;
12678 ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next)
12682 for (i = 0; i < ifag->count; i++)
12684 Elf_Internal_Rela *insn16_rel;
12685 Elf_Internal_Rela *fag_rel;
12687 fag_rel = ifag->relas[i];
12689 /* Only if this is within the WINDOWS, FP7U2_FLAG
12692 insn16_rel = find_relocs_at_address
12693 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12695 if (insn16_rel != irelend)
12696 insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG;
12702 /* Reset INSN16 to clean fp as gp. */
12705 nds32_fag_unmark_relax (struct nds32_fag *fag,
12706 Elf_Internal_Rela *internal_relocs,
12707 Elf_Internal_Rela *irelend)
12709 struct nds32_fag *ifag;
12711 Elf_Internal_Rela *insn16_rel;
12712 Elf_Internal_Rela *fag_rel;
12714 for (ifag = fag; ifag; ifag = ifag->next)
12716 for (i = 0; i < ifag->count; i++)
12718 fag_rel = ifag->relas[i];
12720 /* Restore the INSN16 relocation. */
12721 insn16_rel = find_relocs_at_address
12722 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12724 if (insn16_rel != irelend)
12725 insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG;
12730 /* This is the main function of fp-as-gp optimization.
12731 It should be called by relax_section. */
12734 nds32_relax_fp_as_gp (struct bfd_link_info *link_info,
12735 bfd *abfd, asection *sec,
12736 Elf_Internal_Rela *internal_relocs,
12737 Elf_Internal_Rela *irelend,
12738 Elf_Internal_Sym *isymbuf)
12740 Elf_Internal_Rela *begin_rel = NULL;
12741 Elf_Internal_Rela *irel;
12742 struct nds32_fag fag_head;
12743 Elf_Internal_Shdr *symtab_hdr;
12744 bfd_byte *contents;
12745 bfd_boolean ifc_inside = FALSE;
12747 /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */
12749 /* Per-function fp-base selection.
12750 1. Create a list for all the gp-relative access.
12751 2. Base on those gp-relative address,
12752 find a fp-base which can cover most access.
12753 3. Use the fp-base for fp-as-gp relaxation.
12755 NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times),
12757 1. delete the `la $fp, _FP_BASE_' instruction and
12758 2. not convert lwi.gp to lwi37.fp.
12760 To delete the _FP_BASE_ instruction, we simply apply
12761 R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it.
12763 To suppress the conversion, we simply NOT to apply
12764 R_NDS32_INSN16_FP7U2_FLAG flag. */
12766 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12768 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12769 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12772 /* Check whether it is worth for fp-as-gp optimization,
12773 i.e., at least 3 gp-load.
12775 Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT
12776 apply this optimization. */
12778 for (irel = internal_relocs; irel < irelend; irel++)
12780 /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region.
12781 One we enter the begin of the region, we track all the LW/ST
12782 instructions, so when we leave the region, we try to find
12783 the best fp-base address for those LW/ST instructions. */
12785 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12786 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12788 /* Begin of the region. */
12790 _bfd_error_handler (_("%B: Nested OMIT_FP in %A."), abfd, sec);
12793 nds32_fag_init (&fag_head);
12794 ifc_inside = FALSE;
12796 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12797 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12800 struct nds32_fag *best_fag, *tmp_fag;
12803 /* End of the region.
12804 Check whether it is worth to do fp-as-gp. */
12806 if (begin_rel == NULL)
12808 _bfd_error_handler (_("%B: Unmatched OMIT_FP in %A."), abfd, sec);
12812 accu = nds32_fag_find_base (&fag_head, &best_fag);
12814 /* Clean FP7U2_FLAG because they may set ever. */
12815 tmp_fag = fag_head.next;
12816 nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend);
12818 /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */
12819 if (accu < FAG_THRESHOLD
12820 || !nds32_fag_mark_relax (link_info, abfd, best_fag,
12821 internal_relocs, irelend))
12823 /* Not worth to do fp-as-gp. */
12824 begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12825 begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12826 irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12827 irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12828 nds32_fag_free_list (&fag_head);
12833 /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler,
12834 so we use it to record the distance to the reloction of best
12836 dist = best_fag->relas[0] - begin_rel;
12837 BFD_ASSERT (dist > 0 && dist < 0xffffff);
12838 /* Use high 16 bits of addend to record the _FP_BASE_ matched
12839 relocation. And get the base value when relocating. */
12840 begin_rel->r_addend &= (0x1 << 16) - 1;
12841 begin_rel->r_addend |= dist << 16;
12843 nds32_fag_free_list (&fag_head);
12847 if (begin_rel == NULL || ifc_inside)
12848 /* Skip if we are not in the region of fp-as-gp. */
12851 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA
12852 || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA)
12857 /* A gp-relative access is found. Insert it to the fag-list. */
12859 /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */
12860 insn = bfd_getb32 (contents + irel->r_offset);
12861 if (!N32_IS_RT3 (insn))
12864 addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
12865 nds32_fag_insert (&fag_head, addr, irel);
12867 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA)
12871 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12872 || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
12874 /* Suppress fp as gp when encounter ifc. */
12882 /* Remove unused `la $fp, _FD_BASE_' instruction. */
12885 nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec,
12886 Elf_Internal_Rela *internal_relocs,
12887 Elf_Internal_Rela *irelend)
12889 Elf_Internal_Rela *irel;
12890 Elf_Internal_Shdr *symtab_hdr;
12891 bfd_byte *contents = NULL;
12892 nds32_elf_blank_t *relax_blank_list = NULL;
12893 bfd_boolean result = TRUE;
12894 bfd_boolean unused_region = FALSE;
12897 NOTE: Disable fp-as-gp if we encounter ifcall relocations.
12898 * R_NDS32_17IFC_PCREL_RELA
12899 * R_NDS32_10IFCU_PCREL_RELA
12904 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12905 nds32_get_section_contents (abfd, sec, &contents, TRUE);
12907 for (irel = internal_relocs; irel < irelend; irel++)
12909 /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP
12910 we marked to in previous pass.
12911 DO NOT scan relocations again, since we've alreadly decided it
12912 and set the flag. */
12913 const char *syname;
12917 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12918 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12919 unused_region = TRUE;
12920 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12921 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12922 unused_region = FALSE;
12924 /* We're not in the region. */
12925 if (!unused_region)
12928 /* _FP_BASE_ must be a GLOBAL symbol. */
12929 syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
12930 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
12933 /* The symbol name must be _FP_BASE_. */
12934 syname = elf_sym_hashes (abfd)[syndx]->root.root.string;
12935 if (strcmp (syname, FP_BASE_NAME) != 0)
12938 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA)
12940 /* addi.gp $fp, -256 */
12941 insn = bfd_getb32 (contents + irel->r_offset);
12942 if (insn != INSN_ADDIGP_TO_FP)
12945 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA)
12947 /* addi $fp, $gp, -256 */
12948 insn = bfd_getb32 (contents + irel->r_offset);
12949 if (insn != INSN_ADDI_GP_TO_FP)
12952 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA)
12954 /* movi $fp, FP_BASE */
12955 insn = bfd_getb32 (contents + irel->r_offset);
12956 if (insn != INSN_MOVI_TO_FP)
12962 /* We got here because a FP_BASE instruction is found. */
12963 if (!insert_nds32_elf_blank_recalc_total
12964 (&relax_blank_list, irel->r_offset, 4))
12969 if (relax_blank_list)
12971 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12972 relax_blank_list = NULL;
12981 /* This is a version of bfd_generic_get_relocated_section_contents.
12982 We need this variety because relaxation will modify the dwarf
12983 infomation. When there is undefined symbol reference error mesage,
12984 linker need to dump line number where the symbol be used. However
12985 the address is be relaxed, it can not get the original dwarf contents.
12986 The variety only modify function call for reading in the section. */
12989 nds32_elf_get_relocated_section_contents (bfd *abfd,
12990 struct bfd_link_info *link_info,
12991 struct bfd_link_order *link_order,
12993 bfd_boolean relocatable,
12996 bfd *input_bfd = link_order->u.indirect.section->owner;
12997 asection *input_section = link_order->u.indirect.section;
12999 arelent **reloc_vector;
13002 reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
13003 if (reloc_size < 0)
13006 /* Read in the section. */
13007 if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE))
13010 if (reloc_size == 0)
13013 reloc_vector = (arelent **) bfd_malloc (reloc_size);
13014 if (reloc_vector == NULL)
13017 reloc_count = bfd_canonicalize_reloc (input_bfd, input_section,
13018 reloc_vector, symbols);
13019 if (reloc_count < 0)
13022 if (reloc_count > 0)
13025 for (parent = reloc_vector; *parent != NULL; parent++)
13027 char *error_message = NULL;
13029 bfd_reloc_status_type r;
13031 symbol = *(*parent)->sym_ptr_ptr;
13032 if (symbol->section && discarded_section (symbol->section))
13035 static reloc_howto_type none_howto
13036 = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL,
13037 "unused", FALSE, 0, 0, FALSE);
13039 p = data + (*parent)->address * bfd_octets_per_byte (input_bfd);
13040 _bfd_clear_contents ((*parent)->howto, input_bfd, input_section,
13042 (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
13043 (*parent)->addend = 0;
13044 (*parent)->howto = &none_howto;
13048 r = bfd_perform_relocation (input_bfd, *parent, data,
13050 relocatable ? abfd : NULL,
13055 asection *os = input_section->output_section;
13057 /* A partial link, so keep the relocs. */
13058 os->orelocation[os->reloc_count] = *parent;
13062 if (r != bfd_reloc_ok)
13066 case bfd_reloc_undefined:
13067 (*link_info->callbacks->undefined_symbol)
13068 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13069 input_bfd, input_section, (*parent)->address, TRUE);
13071 case bfd_reloc_dangerous:
13072 BFD_ASSERT (error_message != NULL);
13073 (*link_info->callbacks->reloc_dangerous)
13074 (link_info, error_message,
13075 input_bfd, input_section, (*parent)->address);
13077 case bfd_reloc_overflow:
13078 (*link_info->callbacks->reloc_overflow)
13080 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13081 (*parent)->howto->name, (*parent)->addend,
13082 input_bfd, input_section, (*parent)->address);
13084 case bfd_reloc_outofrange:
13086 This error can result when processing some partially
13087 complete binaries. Do not abort, but issue an error
13088 message instead. */
13089 link_info->callbacks->einfo
13090 (_("%X%P: %B(%A): relocation \"%R\" goes out of range\n"),
13091 abfd, input_section, * parent);
13102 free (reloc_vector);
13106 free (reloc_vector);
13110 /* Link-time IFC relaxation.
13111 In this optimization, we chains jump instructions
13112 of the same destination with ifcall. */
13115 /* List to save jal and j relocation. */
13116 struct elf_nds32_ifc_symbol_entry
13119 struct elf_link_hash_entry *h;
13120 struct elf_nds32_ifc_irel_list *irel_head;
13121 unsigned long insn;
13123 int enable; /* Apply ifc. */
13124 int ex9_enable; /* Apply ifc after ex9. */
13125 struct elf_nds32_ifc_symbol_entry *next;
13128 struct elf_nds32_ifc_irel_list
13130 Elf_Internal_Rela *irel;
13133 /* If this is set, then it is the last instruction for
13134 ifc-chain, so it must be keep for the actual branching. */
13136 struct elf_nds32_ifc_irel_list *next;
13139 static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL;
13141 /* Insert symbol of jal and j for ifc. */
13144 nds32_elf_ifc_insert_symbol (asection *sec,
13145 struct elf_link_hash_entry *h,
13146 Elf_Internal_Rela *irel,
13147 unsigned long insn)
13149 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13151 /* Check there is target of existing entry the same as the new one. */
13152 while (ptr != NULL)
13154 if (((h == NULL && ptr->sec == sec
13155 && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info)
13156 && ptr->irel_head->irel->r_addend == irel->r_addend)
13159 && ptr->insn == insn)
13161 /* The same target exist, so insert into list. */
13162 struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head;
13164 while (irel_list->next != NULL)
13165 irel_list = irel_list->next;
13166 irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
13167 irel_list = irel_list->next;
13168 irel_list->irel = irel;
13169 irel_list->keep = 1;
13172 irel_list->sec = NULL;
13174 irel_list->sec = sec;
13175 irel_list->next = NULL;
13178 if (ptr->next == NULL)
13183 /* There is no same target entry, so build a new one. */
13184 if (ifc_symbol_head == NULL)
13186 ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
13187 ptr = ifc_symbol_head;
13191 ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
13196 ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
13197 ptr->irel_head->irel = irel;
13199 ptr->irel_head->keep = 1;
13203 /* Local symbols. */
13205 ptr->irel_head->sec = NULL;
13209 /* Global symbol. */
13211 ptr->irel_head->sec = sec;
13214 ptr->irel_head->next = NULL;
13217 ptr->ex9_enable = 0;
13221 /* Gather all jal and j instructions. */
13224 nds32_elf_ifc_calc (struct bfd_link_info *info,
13225 bfd *abfd, asection *sec)
13227 Elf_Internal_Rela *internal_relocs;
13228 Elf_Internal_Rela *irelend;
13229 Elf_Internal_Rela *irel;
13230 Elf_Internal_Shdr *symtab_hdr;
13231 bfd_byte *contents = NULL;
13232 uint32_t insn, insn_with_reg;
13233 unsigned long r_symndx;
13234 struct elf_link_hash_entry *h;
13235 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
13236 struct elf_nds32_link_hash_table *table;
13237 bfd_boolean ifc_loop_aware;
13239 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
13240 TRUE /* keep_memory */);
13241 irelend = internal_relocs + sec->reloc_count;
13242 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
13244 /* Check if the object enable ifc. */
13245 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
13246 R_NDS32_RELAX_ENTRY);
13250 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
13251 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
13252 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG)))
13255 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
13258 table = nds32_elf_hash_table (info);
13259 ifc_loop_aware = table->ifc_loop_aware;
13260 while (irel != NULL && irel < irelend)
13262 /* Traverse all relocation and gather all of them to build the list. */
13264 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN)
13266 if (ifc_loop_aware == 1
13267 && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)
13269 /* Check the region if loop or not. If it is true and
13270 ifc-loop-aware is true, ignore the region till region end. */
13271 while (irel != NULL
13273 && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
13274 || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0))
13279 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
13281 insn = bfd_getb32 (contents + irel->r_offset);
13282 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
13283 r_symndx = ELF32_R_SYM (irel->r_info);
13284 if (r_symndx < symtab_hdr->sh_info)
13286 /* Local symbol. */
13287 nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg);
13291 /* External symbol. */
13292 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
13293 nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg);
13301 /* Determine whether j and jal should be substituted. */
13304 nds32_elf_ifc_filter (struct bfd_link_info *info)
13306 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13307 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13308 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13309 struct elf_nds32_link_hash_table *table;
13310 int target_optimize;
13313 table = nds32_elf_hash_table (info);
13314 target_optimize = table->target_optimize;
13317 irel_ptr = ptr->irel_head;
13318 if (ptr->h == NULL)
13320 /* Local symbol. */
13321 irel_keeper = irel_ptr;
13322 while (irel_ptr && irel_ptr->next)
13324 /* Check there is jump target can be used. */
13325 if ((irel_ptr->next->irel->r_offset
13326 - irel_keeper->irel->r_offset) > 1022)
13327 irel_keeper = irel_ptr->next;
13331 irel_ptr->keep = 0;
13333 irel_ptr = irel_ptr->next;
13338 /* Global symbol. */
13339 /* We have to get the absolute address and decide
13340 whether to keep it or not. */
13343 address = (irel_ptr->irel->r_offset
13344 + irel_ptr->sec->output_section->vma
13345 + irel_ptr->sec->output_offset);
13346 irel_ptr->addr = address;
13347 irel_ptr = irel_ptr->next;
13350 irel_ptr = ptr->irel_head;
13353 /* Sort by address. */
13354 struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr;
13355 struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr;
13356 struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL;
13357 struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL;
13359 /* Get the smallest one. */
13360 while (irel_temp->next)
13362 if (irel_temp->next->addr < irel_dest->addr)
13364 irel_dest_prev = irel_temp;
13365 irel_dest = irel_temp->next;
13367 irel_temp = irel_temp->next;
13370 if (irel_dest != irel_ptr)
13373 irel_ptr_prev->next = irel_dest;
13374 if (irel_dest_prev)
13375 irel_dest_prev->next = irel_ptr;
13376 irel_temp = irel_ptr->next;
13377 irel_ptr->next = irel_dest->next;
13378 irel_dest->next = irel_temp;
13380 irel_ptr_prev = irel_ptr;
13381 irel_ptr = irel_ptr->next;
13384 irel_ptr = ptr->irel_head;
13385 irel_keeper = irel_ptr;
13386 while (irel_ptr && irel_ptr->next)
13388 if ((irel_ptr->next->addr - irel_keeper->addr) > 1022)
13389 irel_keeper = irel_ptr->next;
13393 irel_ptr->keep = 0;
13395 irel_ptr = irel_ptr->next;
13399 /* Ex9 enable. Reserve it for ex9. */
13400 if ((target_optimize & NDS32_RELAX_EX9_ON)
13401 && ptr->irel_head != irel_keeper)
13407 /* Determine whether j and jal should be substituted after ex9 done. */
13410 nds32_elf_ifc_filter_after_ex9 (void)
13412 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13413 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13417 if (ptr->enable == 0)
13419 /* Check whether ifc is applied or not. */
13420 irel_ptr = ptr->irel_head;
13421 ptr->ex9_enable = 1;
13424 if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN)
13427 ptr->ex9_enable = 0;
13430 irel_ptr = irel_ptr->next;
13437 /* Wrapper to do ifc relaxation. */
13440 nds32_elf_ifc_finish (struct bfd_link_info *info)
13443 struct elf_nds32_link_hash_table *table;
13445 table = nds32_elf_hash_table (info);
13446 relax_status = table->relax_status;
13448 if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE))
13449 nds32_elf_ifc_filter (info);
13451 nds32_elf_ifc_filter_after_ex9 ();
13453 if (!nds32_elf_ifc_replace (info))
13457 table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE;
13461 /* Traverse the result of ifc filter and replace it with ifcall9. */
13464 nds32_elf_ifc_replace (struct bfd_link_info *info)
13466 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13467 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13468 nds32_elf_blank_t *relax_blank_list = NULL;
13469 bfd_byte *contents = NULL;
13470 Elf_Internal_Rela *internal_relocs;
13471 Elf_Internal_Rela *irel;
13472 Elf_Internal_Rela *irelend;
13473 unsigned short insn16 = INSN_IFCALL9;
13474 struct elf_nds32_link_hash_table *table;
13477 table = nds32_elf_hash_table (info);
13478 relax_status = table->relax_status;
13482 /* Traverse the ifc gather list, and replace the
13483 filter entries by ifcall9. */
13484 if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1)
13485 || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE)
13486 && ptr->ex9_enable == 1))
13488 irel_ptr = ptr->irel_head;
13489 if (ptr->h == NULL)
13491 /* Local symbol. */
13492 internal_relocs = _bfd_elf_link_read_relocs
13493 (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */);
13494 irelend = internal_relocs + ptr->sec->reloc_count;
13496 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13502 if (irel_ptr->keep == 0 && irel_ptr->next)
13504 /* The one can be replaced. We have to check whether
13505 there is any alignment point in the region. */
13506 irel = irel_ptr->irel;
13507 while (((irel_ptr->next->keep == 0
13508 && irel < irel_ptr->next->irel)
13509 || (irel_ptr->next->keep == 1 && irel < irelend))
13510 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13511 && (irel->r_addend & 0x1f) == 2))
13513 if (irel >= irelend
13514 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13515 && (irel->r_addend & 0x1f) == 2
13516 && ((irel->r_offset - get_nds32_elf_blank_total
13517 (&relax_blank_list, irel->r_offset, 1))
13520 /* Replace by ifcall9. */
13521 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13522 if (!insert_nds32_elf_blank_recalc_total
13523 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13525 irel_ptr->irel->r_info =
13526 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13527 R_NDS32_10IFCU_PCREL_RELA);
13530 irel_ptr = irel_ptr->next;
13533 /* Delete the redundant code. */
13534 if (relax_blank_list)
13536 nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec,
13538 relax_blank_list = NULL;
13543 /* Global symbol. */
13546 if (irel_ptr->keep == 0 && irel_ptr->next)
13548 /* The one can be replaced, and we have to check
13549 whether there is any alignment point in the region. */
13550 internal_relocs = _bfd_elf_link_read_relocs
13551 (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL,
13552 TRUE /* keep_memory */);
13553 irelend = internal_relocs + irel_ptr->sec->reloc_count;
13554 if (!nds32_get_section_contents (irel_ptr->sec->owner,
13555 irel_ptr->sec, &contents,
13559 irel = irel_ptr->irel;
13560 while (((irel_ptr->sec == irel_ptr->next->sec
13561 && irel_ptr->next->keep == 0
13562 && irel < irel_ptr->next->irel)
13563 || ((irel_ptr->sec != irel_ptr->next->sec
13564 || irel_ptr->next->keep == 1)
13565 && irel < irelend))
13566 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13567 && (irel->r_addend & 0x1f) == 2))
13569 if (irel >= irelend
13570 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13571 && (irel->r_addend & 0x1f) == 2
13572 && ((irel->r_offset
13573 - get_nds32_elf_blank_total (&relax_blank_list,
13574 irel->r_offset, 1)) & 0x02) == 0))
13576 /* Replace by ifcall9. */
13577 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13578 if (!insert_nds32_elf_blank_recalc_total
13579 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13582 /* Delete the redundant code, and clear the relocation. */
13583 nds32_elf_relax_delete_blanks (irel_ptr->sec->owner,
13586 irel_ptr->irel->r_info =
13587 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13588 R_NDS32_10IFCU_PCREL_RELA);
13589 relax_blank_list = NULL;
13593 irel_ptr = irel_ptr->next;
13603 /* Relocate ifcall. */
13606 nds32_elf_ifc_reloc (void)
13608 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13609 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13610 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13611 bfd_vma relocation, address;
13612 unsigned short insn16;
13613 bfd_byte *contents = NULL;
13614 static bfd_boolean done = FALSE;
13623 /* Check the entry is enable ifcall. */
13624 if (ptr->enable == 1 || ptr->ex9_enable == 1)
13626 /* Get the reserve jump. */
13627 irel_ptr = ptr->irel_head;
13630 if (irel_ptr->keep == 1)
13632 irel_keeper = irel_ptr;
13635 irel_ptr = irel_ptr->next;
13638 irel_ptr = ptr->irel_head;
13639 if (ptr->h == NULL)
13641 /* Local symbol. */
13642 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13648 if (irel_ptr->keep == 0
13649 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13651 relocation = irel_keeper->irel->r_offset;
13652 relocation = relocation - irel_ptr->irel->r_offset;
13653 while (irel_keeper && relocation > 1022)
13655 irel_keeper = irel_keeper->next;
13656 if (irel_keeper && irel_keeper->keep == 1)
13658 relocation = irel_keeper->irel->r_offset;
13659 relocation = relocation - irel_ptr->irel->r_offset;
13662 if (relocation > 1022)
13664 /* Double check. */
13665 irel_keeper = ptr->irel_head;
13666 while (irel_keeper)
13668 if (irel_keeper->keep == 1)
13670 relocation = irel_keeper->irel->r_offset;
13671 relocation = relocation - irel_ptr->irel->r_offset;
13673 if (relocation <= 1022)
13675 irel_keeper = irel_keeper->next;
13680 irel_ptr->irel->r_info =
13681 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13683 insn16 = INSN_IFCALL9 | (relocation >> 1);
13684 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13686 irel_ptr = irel_ptr->next;
13691 /* Global symbol. */
13694 if (irel_ptr->keep == 0
13695 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13697 /* Get the distance between ifcall and jump. */
13698 relocation = (irel_keeper->irel->r_offset
13699 + irel_keeper->sec->output_section->vma
13700 + irel_keeper->sec->output_offset);
13701 address = (irel_ptr->irel->r_offset
13702 + irel_ptr->sec->output_section->vma
13703 + irel_ptr->sec->output_offset);
13704 relocation = relocation - address;
13706 /* The distance is over ragne, find callee again. */
13707 while (irel_keeper && relocation > 1022)
13709 irel_keeper = irel_keeper->next;
13710 if (irel_keeper && irel_keeper->keep ==1)
13712 relocation = (irel_keeper->irel->r_offset
13713 + irel_keeper->sec->output_section->vma
13714 + irel_keeper->sec->output_offset);
13715 relocation = relocation - address;
13719 if (relocation > 1022)
13721 /* Double check. */
13722 irel_keeper = ptr->irel_head;
13723 while (irel_keeper)
13725 if (irel_keeper->keep == 1)
13728 relocation = (irel_keeper->irel->r_offset
13729 + irel_keeper->sec->output_section->vma
13730 + irel_keeper->sec->output_offset);
13731 relocation = relocation - address;
13733 if (relocation <= 1022)
13735 irel_keeper = irel_keeper->next;
13740 if (!nds32_get_section_contents
13741 (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE))
13743 insn16 = INSN_IFCALL9 | (relocation >> 1);
13744 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13745 irel_ptr->irel->r_info =
13746 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13749 irel_ptr =irel_ptr->next;
13759 /* End of IFC relaxation. */
13761 /* EX9 Instruction Table Relaxation. */
13763 /* Global hash list. */
13764 struct elf_link_hash_entry_list
13766 struct elf_link_hash_entry *h;
13767 struct elf_link_hash_entry_list *next;
13770 /* Save different destination but same insn. */
13771 struct elf_link_hash_entry_mul_list
13773 /* Global symbol times. */
13775 /* Save relocation for each global symbol but useful?? */
13776 Elf_Internal_Rela *irel;
13777 /* For sethi, two sethi may have the same high-part but different low-parts. */
13778 Elf_Internal_Rela rel_backup;
13779 struct elf_link_hash_entry_list *h_list;
13780 struct elf_link_hash_entry_mul_list *next;
13783 /* Instruction hash table. */
13784 struct elf_nds32_code_hash_entry
13786 struct bfd_hash_entry root;
13788 /* For insn that can use relocation or constant ex: sethi. */
13791 struct elf_link_hash_entry_mul_list *m_list;
13792 /* Using r_addend. */
13793 Elf_Internal_Rela *irel;
13794 /* Using r_info. */
13795 Elf_Internal_Rela rel_backup;
13798 /* Instruction count list. */
13799 struct elf_nds32_insn_times_entry
13801 const char *string;
13805 struct elf_link_hash_entry_mul_list *m_list;
13806 Elf_Internal_Rela *irel;
13807 Elf_Internal_Rela rel_backup;
13808 struct elf_nds32_insn_times_entry *next;
13811 /* J and JAL symbol list. */
13812 struct elf_nds32_symbol_entry
13815 unsigned long insn;
13816 struct elf_nds32_symbol_entry *next;
13819 /* Relocation list. */
13820 struct elf_nds32_irel_entry
13822 Elf_Internal_Rela *irel;
13823 struct elf_nds32_irel_entry *next;
13826 /* ex9.it insn need to be fixed. */
13827 struct elf_nds32_ex9_refix
13829 Elf_Internal_Rela *irel;
13831 struct elf_link_hash_entry *h;
13833 struct elf_nds32_ex9_refix *next;
13836 static struct bfd_hash_table ex9_code_table;
13837 static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL;
13838 static struct elf_nds32_ex9_refix *ex9_refix_head = NULL;
13840 /* EX9 hash function. */
13842 static struct bfd_hash_entry *
13843 nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry,
13844 struct bfd_hash_table *table,
13845 const char *string)
13847 struct elf_nds32_code_hash_entry *ret;
13849 /* Allocate the structure if it has not already been allocated by a
13853 entry = (struct bfd_hash_entry *)
13854 bfd_hash_allocate (table, sizeof (*ret));
13859 /* Call the allocation method of the superclass. */
13860 entry = bfd_hash_newfunc (entry, table, string);
13864 ret = (struct elf_nds32_code_hash_entry*) entry;
13866 ret->const_insn = 0;
13867 ret->m_list = NULL;
13873 /* Insert ex9 entry
13874 this insert must be stable sorted by times. */
13877 nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr)
13879 struct elf_nds32_insn_times_entry *temp;
13880 struct elf_nds32_insn_times_entry *temp2;
13882 if (ex9_insn_head == NULL)
13884 ex9_insn_head = ptr;
13889 temp = ex9_insn_head;
13890 temp2 = ex9_insn_head;
13891 while (temp->next &&
13892 (temp->next->times >= ptr->times
13893 || temp->times == -1))
13895 if (temp->times == -1)
13899 if (ptr->times > temp->times && temp->times != -1)
13902 if (temp2->times == -1)
13905 ex9_insn_head = ptr;
13907 else if (temp->next == NULL)
13914 ptr->next = temp->next;
13920 /* Examine each insn times in hash table.
13921 Handle multi-link hash entry.
13923 TODO: This function doesn't assign so much info since it is fake. */
13926 nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h)
13928 struct elf_nds32_insn_times_entry *ptr;
13931 if (h->m_list == NULL)
13933 /* Local symbol insn or insn without relocation. */
13937 ptr = (struct elf_nds32_insn_times_entry *)
13938 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13939 ptr->times = h->times;
13940 ptr->string = h->root.string;
13941 ptr->m_list = NULL;
13943 ptr->irel = h->irel;
13944 ptr->rel_backup = h->rel_backup;
13945 nds32_elf_ex9_insert_entry (ptr);
13949 /* Global symbol insn. */
13950 /* Only sethi insn has multiple m_list. */
13951 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
13956 times += m_list->times;
13957 m_list = m_list->next;
13961 m_list = h->m_list;
13962 ptr = (struct elf_nds32_insn_times_entry *)
13963 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13964 ptr->times = times; /* Use the total times. */
13965 ptr->string = h->root.string;
13966 ptr->m_list = m_list;
13968 ptr->irel = m_list->irel;
13969 ptr->rel_backup = m_list->rel_backup;
13970 nds32_elf_ex9_insert_entry (ptr);
13972 if (h->const_insn == 1)
13974 /* sethi with constant value. */
13978 ptr = (struct elf_nds32_insn_times_entry *)
13979 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13980 ptr->times = h->times;
13981 ptr->string = h->root.string;
13982 ptr->m_list = NULL;
13985 ptr->rel_backup = h->rel_backup;
13986 nds32_elf_ex9_insert_entry (ptr);
13992 /* Count each insn times in hash table.
13993 Handle multi-link hash entry. */
13996 nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h)
13998 int reservation, times;
13999 unsigned long relocation, min_relocation;
14000 struct elf_nds32_insn_times_entry *ptr;
14002 if (h->m_list == NULL)
14004 /* Local symbol insn or insn without relocation. */
14007 ptr = (struct elf_nds32_insn_times_entry *)
14008 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14009 ptr->times = h->times;
14010 ptr->string = h->root.string;
14011 ptr->m_list = NULL;
14013 ptr->irel = h->irel;
14014 ptr->rel_backup = h->rel_backup;
14015 nds32_elf_ex9_insert_entry (ptr);
14019 /* Global symbol insn. */
14020 /* Only sethi insn has multiple m_list. */
14021 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
14023 if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA
14024 && m_list->next != NULL)
14026 /* Sethi insn has different symbol or addend but has same hi20. */
14030 min_relocation = 0xffffffff;
14033 /* Get the minimum sethi address
14034 and calculate how many entry the sethi-list have to use. */
14035 if ((m_list->h_list->h->root.type == bfd_link_hash_defined
14036 || m_list->h_list->h->root.type == bfd_link_hash_defweak)
14037 && (m_list->h_list->h->root.u.def.section != NULL
14038 && m_list->h_list->h->root.u.def.section->output_section != NULL))
14040 relocation = (m_list->h_list->h->root.u.def.value +
14041 m_list->h_list->h->root.u.def.section->output_section->vma +
14042 m_list->h_list->h->root.u.def.section->output_offset);
14043 relocation += m_list->irel->r_addend;
14047 if (relocation < min_relocation)
14048 min_relocation = relocation;
14049 times += m_list->times;
14050 m_list = m_list->next;
14052 if (min_relocation < ex9_relax_size)
14053 reservation = (min_relocation >> 12) + 1;
14055 reservation = (min_relocation >> 12)
14056 - ((min_relocation - ex9_relax_size) >> 12) + 1;
14057 if (reservation < (times / 3))
14059 /* Efficient enough to use ex9. */
14062 for (i = reservation ; i > 0; i--)
14064 /* Allocate number of reservation ex9 entry. */
14065 ptr = (struct elf_nds32_insn_times_entry *)
14066 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14067 ptr->times = h->m_list->times / reservation;
14068 ptr->string = h->root.string;
14069 ptr->m_list = h->m_list;
14071 ptr->irel = h->m_list->irel;
14072 ptr->rel_backup = h->m_list->rel_backup;
14073 nds32_elf_ex9_insert_entry (ptr);
14079 /* Normal global symbol that means no different address symbol
14080 using same ex9 entry. */
14081 if (m_list->times >= 3)
14083 ptr = (struct elf_nds32_insn_times_entry *)
14084 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14085 ptr->times = m_list->times;
14086 ptr->string = h->root.string;
14087 ptr->m_list = h->m_list;
14089 ptr->irel = h->m_list->irel;
14090 ptr->rel_backup = h->m_list->rel_backup;
14091 nds32_elf_ex9_insert_entry (ptr);
14095 if (h->const_insn == 1)
14097 /* sethi with constant value. */
14101 ptr = (struct elf_nds32_insn_times_entry *)
14102 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14103 ptr->times = h->times;
14104 ptr->string = h->root.string;
14105 ptr->m_list = NULL;
14108 ptr->rel_backup = h->rel_backup;
14109 nds32_elf_ex9_insert_entry (ptr);
14116 /* Hash table traverse function. */
14119 nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*))
14123 ex9_code_table.frozen = 1;
14124 for (i = 0; i < ex9_code_table.size; i++)
14126 struct bfd_hash_entry *p;
14128 for (p = ex9_code_table.table[i]; p != NULL; p = p->next)
14129 if (!func ((struct elf_nds32_code_hash_entry *) p))
14133 ex9_code_table.frozen = 0;
14137 /* Give order number to insn list. */
14140 nds32_elf_order_insn_times (struct bfd_link_info *info)
14142 struct elf_nds32_insn_times_entry *ex9_insn;
14143 struct elf_nds32_insn_times_entry *temp = NULL;
14144 struct elf_nds32_link_hash_table *table;
14148 if (ex9_insn_head == NULL)
14151 /* The max number of entries is 512. */
14152 ex9_insn = ex9_insn_head;
14153 table = nds32_elf_hash_table (info);
14154 ex9_limit = table->ex9_limit;
14156 ex9_insn = ex9_insn_head;
14158 while (ex9_insn != NULL && number < ex9_limit)
14160 ex9_insn->order = number;
14163 ex9_insn = ex9_insn->next;
14166 if (ex9_insn && temp)
14169 while (ex9_insn != NULL)
14171 /* Free useless entry. */
14173 ex9_insn = ex9_insn->next;
14178 /* Build .ex9.itable section. */
14181 nds32_elf_ex9_build_itable (struct bfd_link_info *link_info)
14183 asection *table_sec;
14184 struct elf_nds32_insn_times_entry *ptr;
14187 bfd_byte *contents = NULL;
14189 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
14190 it_abfd = it_abfd->link.next)
14192 /* Find the section .ex9.itable, and put all entries into it. */
14193 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
14194 if (table_sec != NULL)
14196 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
14199 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
14202 table_sec->size = number * 4;
14207 elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST;
14209 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
14213 val = strtol (ptr->string, NULL, 16);
14214 bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4));
14222 /* Get insn with regs according to relocation type. */
14225 nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel,
14226 uint32_t insn, uint32_t *insn_with_reg)
14228 reloc_howto_type *howto = NULL;
14231 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
14232 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
14233 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
14235 *insn_with_reg = insn;
14239 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
14240 *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask);
14243 /* Mask number of address bits according to relocation. */
14245 static unsigned long
14246 nds32_elf_irel_mask (Elf_Internal_Rela *irel)
14248 reloc_howto_type *howto = NULL;
14251 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
14252 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
14253 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
14256 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
14257 return howto->dst_mask;
14261 nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list,
14262 struct elf_nds32_irel_entry *irel_ptr)
14264 if (*irel_list == NULL)
14266 *irel_list = irel_ptr;
14267 irel_ptr->next = NULL;
14271 irel_ptr->next = *irel_list;
14272 *irel_list = irel_ptr;
14277 nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel,
14278 struct elf_link_hash_entry *h, int order)
14280 struct elf_nds32_ex9_refix *ptr;
14282 ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix));
14286 ptr->order = order;
14289 if (ex9_refix_head == NULL)
14290 ex9_refix_head = ptr;
14293 struct elf_nds32_ex9_refix *temp = ex9_refix_head;
14295 while (temp->next != NULL)
14304 CLEAN_PRE = 1 << 1,
14308 /* Check relocation type if supporting for ex9. */
14311 nds32_elf_ex9_relocation_check (struct bfd_link_info *info,
14312 Elf_Internal_Rela **irel,
14313 Elf_Internal_Rela *irelend,
14314 nds32_elf_blank_t *relax_blank_list,
14315 asection *sec,bfd_vma *off,
14316 bfd_byte *contents)
14318 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
14319 bfd_boolean nested_ex9, nested_loop;
14320 bfd_boolean ex9_loop_aware;
14321 /* We use the highest 1 byte of result to record
14322 how many bytes location counter has to move. */
14324 Elf_Internal_Rela *irel_save = NULL;
14325 struct elf_nds32_link_hash_table *table;
14327 table = nds32_elf_hash_table (info);
14328 ex9_loop_aware = table->ex9_loop_aware;
14330 while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset)
14332 switch (ELF32_R_TYPE ((*irel)->r_info))
14334 case R_NDS32_RELAX_REGION_BEGIN:
14335 /* Ignore code block. */
14336 nested_ex9 = FALSE;
14337 nested_loop = FALSE;
14338 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG)
14340 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)))
14342 /* Check the region if loop or not. If it is true and
14343 ex9-loop-aware is true, ignore the region till region end. */
14344 /* To save the status for in .no_relax ex9 region and
14345 loop region to conform the block can do ex9 relaxation. */
14346 nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG);
14347 nested_loop = (ex9_loop_aware
14348 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG));
14349 while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop))
14352 if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN)
14354 /* There may be nested region. */
14355 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14357 else if (ex9_loop_aware
14358 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14359 nested_loop = TRUE;
14361 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END)
14363 /* The end of region. */
14364 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14365 nested_ex9 = FALSE;
14366 else if (ex9_loop_aware
14367 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14368 nested_loop = FALSE;
14370 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL
14371 && ((*irel)->r_addend & 0x1f) == 2)
14373 /* Alignment exist in the region. */
14374 result |= CLEAN_PRE;
14375 if (((*irel)->r_offset -
14376 get_nds32_elf_blank_total (&relax_blank_list,
14377 (*irel)->r_offset, 0)) & 0x02)
14378 result |= PUSH_PRE;
14381 if ((*irel) >= irelend)
14384 *off = (*irel)->r_offset;
14386 /* The final instruction in the region, regard this one as data to ignore it. */
14387 result |= DATA_EXIST;
14392 case R_NDS32_LABEL:
14393 if (((*irel)->r_addend & 0x1f) == 2)
14395 /* Check this point is align and decide to do ex9 or not. */
14396 result |= CLEAN_PRE;
14397 if (((*irel)->r_offset -
14398 get_nds32_elf_blank_total (&relax_blank_list,
14399 (*irel)->r_offset, 0)) & 0x02)
14400 result |= PUSH_PRE;
14403 case R_NDS32_32_RELA:
14405 result |= (4 << 24);
14406 result |= DATA_EXIST;
14408 case R_NDS32_16_RELA:
14410 result |= (2 << 24);
14411 result |= DATA_EXIST;
14415 /* The least code alignment is 2. If the data is only one byte,
14416 we have to shift one more byte. */
14417 if ((*irel)->r_addend == 1)
14418 result |= ((*irel)->r_addend << 25) ;
14420 result |= ((*irel)->r_addend << 24) ;
14422 result |= DATA_EXIST;
14425 case R_NDS32_25_PCREL_RELA:
14426 case R_NDS32_SDA16S3_RELA:
14427 case R_NDS32_SDA15S3_RELA:
14428 case R_NDS32_SDA15S3:
14429 case R_NDS32_SDA17S2_RELA:
14430 case R_NDS32_SDA15S2_RELA:
14431 case R_NDS32_SDA12S2_SP_RELA:
14432 case R_NDS32_SDA12S2_DP_RELA:
14433 case R_NDS32_SDA15S2:
14434 case R_NDS32_SDA18S1_RELA:
14435 case R_NDS32_SDA15S1_RELA:
14436 case R_NDS32_SDA15S1:
14437 case R_NDS32_SDA19S0_RELA:
14438 case R_NDS32_SDA15S0_RELA:
14439 case R_NDS32_SDA15S0:
14440 case R_NDS32_HI20_RELA:
14441 case R_NDS32_LO12S0_ORI_RELA:
14442 case R_NDS32_LO12S0_RELA:
14443 case R_NDS32_LO12S1_RELA:
14444 case R_NDS32_LO12S2_RELA:
14445 /* These relocation is supported ex9 relaxation currently. */
14446 /* We have to save the relocation for using later, since we have
14447 to check there is any alignment in the same address. */
14451 /* Not support relocations. */
14452 if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table)
14453 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE
14454 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16)
14456 /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here.
14457 But we have to consider if there is any side-effect. */
14458 if (!(result & DATA_EXIST))
14460 /* We have to confirm there is no data relocation in the
14461 same address. In general case, this won't happen. */
14462 /* We have to do ex9 conservative, for those relocation not
14463 considerd we ignore instruction. */
14464 result |= DATA_EXIST;
14465 if (*(contents + *off) & 0x80)
14466 result |= (2 << 24);
14468 result |= (4 << 24);
14473 if ((*irel) < irelend
14474 && ((*irel) + 1) < irelend
14475 && (*irel)->r_offset == ((*irel) + 1)->r_offset)
14476 /* There are relocations pointing to the same address, we have to
14477 check all of them. */
14489 /* Replace with ex9 instruction. */
14492 nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off,
14493 nds32_elf_blank_t **relax_blank_list,
14494 struct elf_nds32_irel_entry *pre_irel_ptr,
14495 struct elf_nds32_irel_entry **irel_list)
14499 /* Implement the ex9 relaxation. */
14500 bfd_putb16 (insn16, contents + pre_off);
14501 if (!insert_nds32_elf_blank_recalc_total (relax_blank_list,
14504 if (pre_irel_ptr != NULL)
14505 nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr);
14510 /* Replace input file instruction which is in ex9 itable. */
14513 nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec)
14515 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
14516 bfd_byte *contents = NULL;
14518 uint16_t insn16, insn_ex9;
14519 /* `pre_*' are used to track previous instruction that can use ex9.it. */
14520 bfd_vma pre_off = -1;
14521 uint16_t pre_insn16 = 0;
14522 struct elf_nds32_irel_entry *pre_irel_ptr = NULL;
14523 Elf_Internal_Rela *internal_relocs;
14524 Elf_Internal_Rela *irel;
14525 Elf_Internal_Rela *irelend;
14526 Elf_Internal_Shdr *symtab_hdr;
14527 Elf_Internal_Sym *isym = NULL;
14528 nds32_elf_blank_t *relax_blank_list = NULL;
14530 uint32_t insn_with_reg = 0;
14532 uint32_t it_insn_with_reg;
14533 unsigned long r_symndx;
14535 struct elf_nds32_irel_entry *irel_list = NULL;
14536 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
14537 int data_flag, do_replace, save_irel;
14538 struct elf_link_hash_entry_list *h_list;
14541 /* Load section instructions, relocations, and symbol table. */
14542 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
14543 || !nds32_get_local_syms (abfd, sec, &isym))
14546 _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */);
14547 irelend = internal_relocs + sec->reloc_count;
14548 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
14552 /* Check if the object enable ex9. */
14553 irel = find_relocs_at_address (internal_relocs, internal_relocs,
14554 irelend, R_NDS32_RELAX_ENTRY);
14556 /* Check this section trigger ex9 relaxation. */
14559 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
14560 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
14561 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
14564 irel = internal_relocs;
14566 /* Check alignment and fetch proper relocation. */
14567 while (off < sec->size)
14569 struct elf_link_hash_entry *h = NULL;
14570 struct elf_nds32_irel_entry *irel_ptr = NULL;
14572 /* Syn the instruction and the relocation. */
14573 while (irel != NULL && irel < irelend && irel->r_offset < off)
14576 data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend,
14577 relax_blank_list, sec,
14579 if (data_flag & PUSH_PRE)
14580 if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14581 &relax_blank_list, pre_irel_ptr,
14585 if (data_flag & CLEAN_PRE)
14589 pre_irel_ptr = NULL;
14591 if (data_flag & DATA_EXIST)
14593 /* We save the move offset in the highest byte. */
14594 off += (data_flag >> 24);
14598 if (*(contents + off) & 0x80)
14600 /* 2-byte instruction. */
14605 /* Load the instruction and its opcode with register for comparing. */
14606 ex9_insn = ex9_insn_head;
14607 insn = bfd_getb32 (contents + off);
14611 it_insn = strtol (ex9_insn->string, NULL, 16);
14612 it_insn_with_reg = 0;
14616 if (irel != NULL && irel < irelend && irel->r_offset == off)
14618 /* Insn with relocation. */
14619 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
14621 if (ex9_insn->irel != NULL)
14622 nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn,
14623 &it_insn_with_reg);
14625 if (ex9_insn->irel != NULL
14626 && (ELF32_R_TYPE (irel->r_info) ==
14627 ELF32_R_TYPE (ex9_insn->irel->r_info))
14628 && (insn_with_reg == it_insn_with_reg))
14630 /* Insn relocation and format is the same as table entry. */
14632 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
14633 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
14634 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
14635 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
14636 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
14637 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
14638 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
14639 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
14640 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
14641 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
14642 && ELF32_R_TYPE (irel->r_info) <=
14643 R_NDS32_SDA12S2_SP_RELA)
14644 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
14645 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
14647 r_symndx = ELF32_R_SYM (irel->r_info);
14648 if (r_symndx < symtab_hdr->sh_info)
14650 /* Local symbol. */
14651 int shndx = isym[r_symndx].st_shndx;
14653 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14654 if (ex9_insn->sec == isec
14655 && ex9_insn->irel->r_addend == irel->r_addend
14656 && ex9_insn->irel->r_info == irel->r_info)
14664 /* External symbol. */
14665 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14666 if (ex9_insn->m_list)
14668 h_list = ex9_insn->m_list->h_list;
14672 && (ex9_insn->m_list->irel->r_addend ==
14679 h_list = h_list->next;
14684 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA)
14686 r_symndx = ELF32_R_SYM (irel->r_info);
14687 if (r_symndx < symtab_hdr->sh_info)
14689 /* Local symbols. Compare its base symbol and offset. */
14690 int shndx = isym[r_symndx].st_shndx;
14692 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14693 if (ex9_insn->sec == isec
14694 && ex9_insn->irel->r_addend == irel->r_addend
14695 && ex9_insn->irel->r_info == irel->r_info)
14703 /* External symbol. */
14704 struct elf_link_hash_entry_mul_list *m_list;
14706 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14707 m_list = ex9_insn->m_list;
14711 h_list = m_list->h_list;
14716 && (m_list->irel->r_addend
14717 == irel->r_addend))
14722 && ex9_insn->m_list
14723 && ex9_insn->m_list == ex9_insn->next->m_list)
14725 /* sethi multiple entry must be fixed */
14726 nds32_elf_ex9_insert_fix (sec, irel,
14727 h, ex9_insn->order);
14731 h_list = h_list->next;
14733 m_list = m_list->next;
14739 /* Import table: Check the symbol hash table and the
14740 jump target. Only R_NDS32_25_PCREL_RELA now. */
14741 else if (ex9_insn->times == -1
14742 && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
14744 nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg);
14745 if (insn_with_reg == it_insn_with_reg)
14748 bfd_vma relocation;
14750 r_symndx = ELF32_R_SYM (irel->r_info);
14751 if (r_symndx >= symtab_hdr->sh_info)
14753 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14754 if ((h->root.type == bfd_link_hash_defined
14755 || h->root.type == bfd_link_hash_defweak)
14756 && h->root.u.def.section != NULL
14757 && h->root.u.def.section->output_section != NULL
14758 && h->root.u.def.section->gc_mark == 1
14759 && bfd_is_abs_section (h->root.u.def.section)
14760 && h->root.u.def.value > sec->size)
14762 relocation = h->root.u.def.value +
14763 h->root.u.def.section->output_section->vma +
14764 h->root.u.def.section->output_offset;
14765 relocation += irel->r_addend;
14766 insn = insn_with_reg
14767 | ((relocation >> 1) & 0xffffff);
14768 snprintf (code, sizeof (code), "%08x", insn);
14769 if (strcmp (code, ex9_insn->string) == 0)
14778 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
14779 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
14780 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
14782 /* These relocations do not have to relocate contens, so it can
14783 be regard as instruction without relocation. */
14784 if (insn == it_insn && ex9_insn->irel == NULL)
14790 /* Instruction without relocation, we only
14791 have to compare their byte code. */
14792 if (insn == it_insn && ex9_insn->irel == NULL)
14796 /* Insntruction match so replacing the code here. */
14797 if (do_replace == 1)
14799 /* There are two formats of ex9 instruction. */
14800 if (ex9_insn->order < 32)
14801 insn_ex9 = INSN_EX9_IT_2;
14803 insn_ex9 = INSN_EX9_IT_1;
14804 insn16 = insn_ex9 | ex9_insn->order;
14806 /* Insert ex9 instruction. */
14807 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14808 &relax_blank_list, pre_irel_ptr,
14811 pre_insn16 = insn16;
14815 /* For instuction with relocation do relax. */
14816 irel_ptr = (struct elf_nds32_irel_entry *)
14817 bfd_malloc (sizeof (struct elf_nds32_irel_entry));
14818 irel_ptr->irel = irel;
14819 irel_ptr->next = NULL;
14820 pre_irel_ptr = irel_ptr;
14823 pre_irel_ptr = NULL;
14826 ex9_insn = ex9_insn->next;
14831 /* Insert ex9 instruction. */
14832 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14833 &relax_blank_list, pre_irel_ptr,
14836 /* Delete the redundant code. */
14837 if (relax_blank_list)
14839 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
14840 relax_blank_list = NULL;
14843 /* Clear the relocation that is replaced by ex9. */
14846 struct elf_nds32_irel_entry *irel_ptr;
14848 irel_ptr = irel_list;
14849 irel_list = irel_ptr->next;
14850 irel_ptr->irel->r_info =
14851 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN);
14857 /* Initialize ex9 hash table. */
14860 nds32_elf_ex9_init (void)
14862 if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc,
14863 sizeof (struct elf_nds32_code_hash_entry),
14866 _bfd_error_handler (_("Linker: cannot init ex9 hash table error \n"));
14872 /* Predict how many bytes will be relaxed with ex9 and ifc. */
14875 nds32_elf_ex9_total_relax (struct bfd_link_info *info)
14877 struct elf_nds32_insn_times_entry *ex9_insn;
14878 struct elf_nds32_insn_times_entry *temp;
14879 int target_optimize;
14880 struct elf_nds32_link_hash_table *table;
14882 if (ex9_insn_head == NULL)
14885 table = nds32_elf_hash_table (info);
14886 target_optimize = table->target_optimize;
14887 ex9_insn = ex9_insn_head;
14890 ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size;
14892 ex9_insn = ex9_insn->next;
14895 ex9_insn_head = NULL;
14897 if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON))
14899 /* Examine ifc reduce size. */
14900 struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head;
14901 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
14906 if (ifc_ent->enable == 0)
14909 irel_ptr = ifc_ent->irel_head;
14913 irel_ptr = irel_ptr->next;
14917 ifc_ent = ifc_ent->next;
14919 ex9_relax_size += size;
14923 /* Finish ex9 table. */
14926 nds32_elf_ex9_finish (struct bfd_link_info *link_info)
14928 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
14929 nds32_elf_order_insn_times (link_info);
14930 nds32_elf_ex9_total_relax (link_info);
14931 /* Traverse the hash table and count its times. */
14932 nds32_elf_code_hash_traverse (nds32_elf_count_insn_times);
14933 nds32_elf_order_insn_times (link_info);
14934 nds32_elf_ex9_build_itable (link_info);
14937 /* Relocate the entries in ex9 table. */
14940 nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr,
14941 struct bfd_link_info *link_info)
14943 Elf_Internal_Sym *isym = NULL;
14944 bfd_vma relocation = -1;
14945 struct elf_link_hash_entry *h;
14947 if (ptr->m_list != NULL)
14949 /* Global symbol. */
14950 h = ptr->m_list->h_list->h;
14951 if ((h->root.type == bfd_link_hash_defined
14952 || h->root.type == bfd_link_hash_defweak)
14953 && h->root.u.def.section != NULL
14954 && h->root.u.def.section->output_section != NULL)
14957 relocation = h->root.u.def.value +
14958 h->root.u.def.section->output_section->vma +
14959 h->root.u.def.section->output_offset;
14960 relocation += ptr->m_list->irel->r_addend;
14965 else if (ptr->sec !=NULL)
14967 /* Local symbol. */
14968 Elf_Internal_Sym sym;
14969 asection *sec = NULL;
14971 asection *isec_ptr = &isec;
14972 Elf_Internal_Rela irel_backup = *(ptr->irel);
14973 asection *sec_backup = ptr->sec;
14974 bfd *abfd = ptr->sec->owner;
14976 if (!nds32_get_local_syms (abfd, sec, &isym))
14978 isym = isym + ELF32_R_SYM (ptr->irel->r_info);
14980 sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
14985 /* The purpose is same as elf_link_input_bfd. */
14986 if (isec_ptr != NULL
14987 && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE
14988 && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
14991 _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr,
14992 elf_section_data (isec_ptr)->sec_info,
14995 relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym,
14996 &ptr->sec, ptr->irel);
14997 if (ptr->irel != NULL)
14998 relocation += ptr->irel->r_addend;
15000 /* Restore origin value since there may be some insntructions that
15001 could not be replaced with ex9.it. */
15002 *(ptr->irel) = irel_backup;
15003 ptr->sec = sec_backup;
15009 /* Import ex9 table and build list. */
15012 nds32_elf_ex9_import_table (struct bfd_link_info *info)
15015 bfd_byte *contents;
15016 unsigned long insn;
15017 FILE *ex9_import_file;
15018 int update_ex9_table;
15019 struct elf_nds32_link_hash_table *table;
15021 table = nds32_elf_hash_table (info);
15022 ex9_import_file = table->ex9_import_file;
15023 rewind (table->ex9_import_file);
15025 contents = bfd_malloc (sizeof (bfd_byte) * 4);
15027 /* Read instructions from the input file and build the list. */
15028 while (!feof (ex9_import_file))
15031 struct elf_nds32_insn_times_entry *ptr;
15034 nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file);
15035 /* Ignore the final byte 0x0a. */
15038 insn = bfd_getb32 (contents);
15039 code = bfd_malloc (sizeof (char) * 9);
15040 snprintf (code, 9, "%08lx", insn);
15041 ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
15042 ptr->string = code;
15046 ptr->m_list = NULL;
15047 ptr->rel_backup.r_offset = 0;
15048 ptr->rel_backup.r_info = 0;
15049 ptr->rel_backup.r_addend = 0;
15052 nds32_elf_ex9_insert_entry (ptr);
15056 update_ex9_table = table->update_ex9_table;
15057 if (update_ex9_table == 1)
15059 /* It has to consider of sethi need to use multiple page
15060 but it not be done yet. */
15061 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
15062 nds32_elf_order_insn_times (info);
15066 /* Export ex9 table. */
15069 nds32_elf_ex9_export (struct bfd_link_info *info,
15070 bfd_byte *contents, int size)
15072 FILE *ex9_export_file;
15073 struct elf_nds32_link_hash_table *table;
15075 table = nds32_elf_hash_table (info);
15076 ex9_export_file = table->ex9_export_file;
15077 fwrite (contents, sizeof (bfd_byte), size, ex9_export_file);
15078 fclose (ex9_export_file);
15081 /* Adjust relocations of J and JAL in ex9.itable.
15082 Export ex9 table. */
15085 nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info)
15087 asection *table_sec = NULL;
15088 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
15089 struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2;
15091 uint32_t insn, insn_with_reg, source_insn;
15092 bfd_byte *contents = NULL, *source_contents = NULL;
15095 int shift, update_ex9_table, offset = 0;
15096 reloc_howto_type *howto = NULL;
15097 Elf_Internal_Rela rel_backup;
15098 unsigned short insn_ex9;
15099 struct elf_nds32_link_hash_table *table;
15100 FILE *ex9_export_file;
15101 static bfd_boolean done = FALSE;
15108 table = nds32_elf_hash_table (link_info);
15110 table->relax_status |= NDS32_RELAX_EX9_DONE;
15113 update_ex9_table = table->update_ex9_table;
15114 /* Generated ex9.itable exactly. */
15115 if (update_ex9_table == 0)
15117 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
15118 it_abfd = it_abfd->link.next)
15120 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
15121 if (table_sec != NULL)
15125 if (table_sec != NULL)
15129 output_bfd = table_sec->output_section->owner;
15130 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15131 if (table_sec->size == 0)
15134 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
15143 output_bfd = link_info->input_bfds->sections->output_section->owner;
15144 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15145 contents = bfd_malloc (sizeof (bfd_byte) * 2048);
15148 /* Relocate instruction. */
15151 bfd_vma relocation, min_relocation = 0xffffffff;
15153 insn = strtol (ex9_insn->string, NULL, 16);
15155 if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL)
15157 if (ex9_insn->m_list)
15158 rel_backup = ex9_insn->m_list->rel_backup;
15160 rel_backup = ex9_insn->rel_backup;
15162 nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg);
15164 bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE
15165 (rel_backup.r_info));
15166 shift = howto->rightshift;
15167 if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA
15168 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA
15169 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA
15170 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA
15171 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA)
15173 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15175 insn_with_reg | ((relocation >> shift) &
15176 nds32_elf_irel_mask (&rel_backup));
15177 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15179 else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3
15180 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0)
15181 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA
15182 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA)
15183 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA
15184 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA)
15185 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA
15186 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA))
15188 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15190 insn_with_reg | (((relocation - gp) >> shift) &
15191 nds32_elf_irel_mask (&rel_backup));
15192 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15194 else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA)
15196 /* Sethi may be multiple entry for one insn. */
15197 if (ex9_insn->next && ex9_insn->m_list
15198 && ex9_insn->m_list == ex9_insn->next->m_list)
15200 struct elf_link_hash_entry_mul_list *m_list;
15201 struct elf_nds32_ex9_refix *fix_ptr;
15202 struct elf_link_hash_entry *h;
15204 temp_ptr = ex9_insn;
15205 temp_ptr2 = ex9_insn;
15206 m_list = ex9_insn->m_list;
15209 h = m_list->h_list->h;
15210 relocation = h->root.u.def.value +
15211 h->root.u.def.section->output_section->vma +
15212 h->root.u.def.section->output_offset;
15213 relocation += m_list->irel->r_addend;
15215 if (relocation < min_relocation)
15216 min_relocation = relocation;
15217 m_list = m_list->next;
15219 relocation = min_relocation;
15221 /* Put insntruction into ex9 table. */
15222 insn = insn_with_reg
15223 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15224 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15225 relocation = relocation + 0x1000; /* hi20 */
15227 while (ex9_insn->next && ex9_insn->m_list
15228 && ex9_insn->m_list == ex9_insn->next->m_list)
15230 /* Multiple sethi. */
15231 ex9_insn = ex9_insn->next;
15234 insn_with_reg | ((relocation >> shift) &
15235 nds32_elf_irel_mask (&rel_backup));
15236 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15237 relocation = relocation + 0x1000; /* hi20 */
15240 fix_ptr = ex9_refix_head;
15243 /* Fix ex9 insn. */
15244 /* temp_ptr2 points to the head of multiple sethi. */
15245 temp_ptr = temp_ptr2;
15246 while (fix_ptr->order != temp_ptr->order && fix_ptr->next)
15248 fix_ptr = fix_ptr->next;
15250 if (fix_ptr->order != temp_ptr->order)
15253 /* Set source insn. */
15255 fix_ptr->h->root.u.def.value +
15256 fix_ptr->h->root.u.def.section->output_section->vma +
15257 fix_ptr->h->root.u.def.section->output_offset;
15258 relocation += fix_ptr->irel->r_addend;
15259 /* sethi imm is imm20s. */
15260 source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff);
15264 /* Match entry and source code. */
15265 insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset);
15266 if (insn == source_insn)
15268 /* Fix the ex9 insn. */
15269 if (temp_ptr->order != fix_ptr->order)
15271 if (!nds32_get_section_contents
15272 (fix_ptr->sec->owner, fix_ptr->sec,
15273 &source_contents, TRUE))
15275 (_("Linker: error cannot fixed ex9 relocation \n"));
15276 if (temp_ptr->order < 32)
15277 insn_ex9 = INSN_EX9_IT_2;
15279 insn_ex9 = INSN_EX9_IT_1;
15280 insn_ex9 = insn_ex9 | temp_ptr->order;
15281 bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset);
15287 if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list)
15289 (_("Linker: error cannot fixed ex9 relocation \n"));
15291 temp_ptr = temp_ptr->next;
15294 fix_ptr = fix_ptr->next;
15299 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15300 insn = insn_with_reg
15301 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15302 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15308 /* Insn without relocation does not have to be fixed
15309 if need to update export table. */
15310 if (update_ex9_table == 1)
15311 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15313 ex9_insn = ex9_insn->next;
15317 ex9_export_file = table->ex9_export_file;
15318 if (ex9_export_file != NULL)
15319 nds32_elf_ex9_export (link_info, contents, table_sec->size);
15320 else if (update_ex9_table == 1)
15322 table->ex9_export_file = table->ex9_import_file;
15323 rewind (table->ex9_export_file);
15324 nds32_elf_ex9_export (link_info, contents, size);
15328 /* Generate ex9 hash table. */
15331 nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec,
15332 struct bfd_link_info *link_info)
15334 Elf_Internal_Rela *internal_relocs;
15335 Elf_Internal_Rela *irelend;
15336 Elf_Internal_Rela *irel;
15337 Elf_Internal_Rela *jrel;
15338 Elf_Internal_Rela rel_backup;
15339 Elf_Internal_Shdr *symtab_hdr;
15340 Elf_Internal_Sym *isym = NULL;
15342 struct elf_link_hash_entry **sym_hashes;
15343 bfd_byte *contents = NULL;
15345 unsigned long r_symndx;
15346 uint32_t insn, insn_with_reg;
15347 struct elf_link_hash_entry *h;
15348 int data_flag, shift, align;
15349 bfd_vma relocation;
15350 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
15351 reloc_howto_type *howto = NULL;
15353 sym_hashes = elf_sym_hashes (abfd);
15354 /* Load section instructions, relocations, and symbol table. */
15355 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
15358 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
15359 TRUE /* keep_memory */);
15360 irelend = internal_relocs + sec->reloc_count;
15361 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
15362 if (!nds32_get_local_syms (abfd, sec, &isym))
15365 /* Check the object if enable ex9. */
15366 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
15367 R_NDS32_RELAX_ENTRY);
15369 /* Check this section trigger ex9 relaxation. */
15372 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
15373 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
15374 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
15377 irel = internal_relocs;
15379 /* Push each insn into hash table. */
15380 while (off < sec->size)
15383 struct elf_nds32_code_hash_entry *entry;
15385 while (irel != NULL && irel < irelend && irel->r_offset < off)
15388 data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend,
15389 NULL, sec, &off, contents);
15390 if (data_flag & DATA_EXIST)
15392 /* We save the move offset in the highest byte. */
15393 off += (data_flag >> 24);
15397 if (*(contents + off) & 0x80)
15406 rel_backup.r_info = 0;
15407 rel_backup.r_offset = 0;
15408 rel_backup.r_addend = 0;
15409 /* Load the instruction and its opcode with register for comparing. */
15410 insn = bfd_getb32 (contents + off);
15412 if (irel != NULL && irel < irelend && irel->r_offset == off)
15414 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
15415 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
15416 shift = howto->rightshift;
15417 align = (1 << shift) - 1;
15418 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
15419 || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA
15420 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
15421 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
15422 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
15423 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
15424 ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15425 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15426 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15427 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15428 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15429 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15430 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15431 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15433 r_symndx = ELF32_R_SYM (irel->r_info);
15435 rel_backup = *irel;
15436 if (r_symndx < symtab_hdr->sh_info)
15438 /* Local symbol. */
15439 int shndx = isym[r_symndx].st_shndx;
15441 bfd_vma st_value = (isym + r_symndx)->st_value;
15442 isec = elf_elfsections (abfd)[shndx]->bfd_section;
15443 relocation = (isec->output_section->vma + isec->output_offset
15444 + st_value + irel->r_addend);
15448 /* External symbol. */
15449 bfd_boolean warned ATTRIBUTE_UNUSED;
15450 bfd_boolean ignored ATTRIBUTE_UNUSED;
15451 bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
15454 /* Maybe there is a better way to get h and relocation */
15455 RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel,
15456 r_symndx, symtab_hdr, sym_hashes,
15457 h, sym_sec, relocation,
15458 unresolved_reloc, warned, ignored);
15459 relocation += irel->r_addend;
15460 if ((h->root.type != bfd_link_hash_defined
15461 && h->root.type != bfd_link_hash_defweak)
15462 || strcmp (h->root.root.string, "_FP_BASE_") == 0)
15469 /* Check for gp relative instruction alignment. */
15470 if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15471 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15472 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15473 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15474 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15475 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15476 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15477 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15480 bfd *output_bfd = sec->output_section->owner;
15481 bfd_reloc_status_type r;
15483 /* If the symbol is in the abs section, the out_bfd will be null.
15484 This happens when the relocation has a symbol@GOTOFF. */
15485 r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15486 if (r != bfd_reloc_ok)
15494 /* Make sure alignment is correct. */
15495 if (relocation & align)
15497 /* Incorrect alignment. */
15499 (_("%s: warning: unaligned small data access. "
15500 "For entry: {%d, %d, %d}, addr = 0x%x, align = 0x%x."),
15501 bfd_get_filename (abfd), irel->r_offset,
15502 irel->r_info, irel->r_addend, relocation, align);
15508 insn = insn_with_reg
15509 | ((relocation >> shift) & nds32_elf_irel_mask (irel));
15511 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
15512 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
15513 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
15515 /* These relocations do not have to relocate contens, so it can
15516 be regard as instruction without relocation. */
15525 snprintf (code, sizeof (code), "%08x", insn);
15527 entry = (struct elf_nds32_code_hash_entry*)
15528 bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE);
15532 (_("%P%F: failed creating ex9.it %s hash table: %E\n"), code);
15537 if (h->root.type == bfd_link_hash_undefined)
15539 /* Global symbol. */
15540 /* In order to do sethi with different symbol but same value. */
15541 if (entry->m_list == NULL)
15543 struct elf_link_hash_entry_mul_list *m_list_new;
15544 struct elf_link_hash_entry_list *h_list_new;
15546 m_list_new = (struct elf_link_hash_entry_mul_list *)
15547 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15548 h_list_new = (struct elf_link_hash_entry_list *)
15549 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15550 entry->m_list = m_list_new;
15551 m_list_new->h_list = h_list_new;
15552 m_list_new->rel_backup = rel_backup;
15553 m_list_new->times = 1;
15554 m_list_new->irel = jrel;
15555 m_list_new->next = NULL;
15557 h_list_new->next = NULL;
15561 struct elf_link_hash_entry_mul_list *m_list = entry->m_list;
15562 struct elf_link_hash_entry_list *h_list;
15566 /* Build the different symbols that point to the same address. */
15567 h_list = m_list->h_list;
15568 if (h_list->h->root.u.def.value == h->root.u.def.value
15569 && h_list->h->root.u.def.section->output_section->vma
15570 == h->root.u.def.section->output_section->vma
15571 && h_list->h->root.u.def.section->output_offset
15572 == h->root.u.def.section->output_offset
15573 && m_list->rel_backup.r_addend == rel_backup.r_addend)
15576 m_list->irel = jrel;
15577 while (h_list->h != h && h_list->next)
15578 h_list = h_list->next;
15579 if (h_list->h != h)
15581 struct elf_link_hash_entry_list *h_list_new;
15583 h_list_new = (struct elf_link_hash_entry_list *)
15584 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15585 h_list->next = h_list_new;
15587 h_list_new->next = NULL;
15591 /* The sethi case may have different address but the
15592 hi20 is the same. */
15593 else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA
15594 && m_list->next == NULL)
15596 struct elf_link_hash_entry_mul_list *m_list_new;
15597 struct elf_link_hash_entry_list *h_list_new;
15599 m_list_new = (struct elf_link_hash_entry_mul_list *)
15600 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15601 h_list_new = (struct elf_link_hash_entry_list *)
15602 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15603 m_list->next = m_list_new;
15604 m_list_new->h_list = h_list_new;
15605 m_list_new->rel_backup = rel_backup;
15606 m_list_new->times = 1;
15607 m_list_new->irel = jrel;
15608 m_list_new->next = NULL;
15610 h_list_new->next = NULL;
15613 m_list = m_list->next;
15624 /* Local symbol and insn without relocation*/
15626 entry->rel_backup = rel_backup;
15629 /* Use in sethi insn with constant and global symbol in same format. */
15631 entry->const_insn = 1;
15633 entry->irel = jrel;
15641 /* Set the _ITB_BASE, and point it to ex9 table. */
15644 nds32_elf_ex9_itb_base (struct bfd_link_info *link_info)
15648 bfd *output_bfd = NULL;
15649 struct bfd_link_hash_entry *bh = NULL;
15651 if (is_ITB_BASE_set == 1)
15654 is_ITB_BASE_set = 1;
15656 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE);
15658 if (bh && (bh->type == bfd_link_hash_defined
15659 || bh->type == bfd_link_hash_defweak))
15662 for (abfd = link_info->input_bfds; abfd != NULL;
15663 abfd = abfd->link.next)
15665 sec = bfd_get_section_by_name (abfd, ".ex9.itable");
15668 output_bfd = sec->output_section->owner;
15672 if (output_bfd == NULL)
15674 output_bfd = link_info->output_bfd;
15675 if (output_bfd->sections == NULL)
15678 sec = bfd_abs_section_ptr;
15680 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_",
15681 FALSE, FALSE, TRUE);
15682 return (_bfd_generic_link_add_one_symbol
15683 (link_info, output_bfd, "_ITB_BASE_",
15684 BSF_GLOBAL | BSF_WEAK, sec, 0,
15685 (const char *) NULL, FALSE, get_elf_backend_data
15686 (output_bfd)->collect, &bh));
15690 #define ELF_ARCH bfd_arch_nds32
15691 #define ELF_MACHINE_CODE EM_NDS32
15692 #define ELF_MAXPAGESIZE 0x1000
15693 #define ELF_TARGET_ID NDS32_ELF_DATA
15695 #define TARGET_BIG_SYM nds32_elf32_be_vec
15696 #define TARGET_BIG_NAME "elf32-nds32be"
15697 #define TARGET_LITTLE_SYM nds32_elf32_le_vec
15698 #define TARGET_LITTLE_NAME "elf32-nds32le"
15700 #define elf_info_to_howto nds32_info_to_howto
15701 #define elf_info_to_howto_rel nds32_info_to_howto_rel
15703 #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create
15704 #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data
15705 #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data
15706 #define bfd_elf32_bfd_relax_section nds32_elf_relax_section
15707 #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags
15709 #define bfd_elf32_mkobject nds32_elf_mkobject
15710 #define elf_backend_action_discarded nds32_elf_action_discarded
15711 #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook
15712 #define elf_backend_check_relocs nds32_elf_check_relocs
15713 #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol
15714 #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections
15715 #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections
15716 #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol
15717 #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections
15718 #define elf_backend_relocate_section nds32_elf_relocate_section
15719 #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook
15720 #define elf_backend_gc_sweep_hook nds32_elf_gc_sweep_hook
15721 #define elf_backend_grok_prstatus nds32_elf_grok_prstatus
15722 #define elf_backend_grok_psinfo nds32_elf_grok_psinfo
15723 #define elf_backend_reloc_type_class nds32_elf_reloc_type_class
15724 #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol
15725 #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook
15726 #define elf_backend_output_arch_syms nds32_elf_output_arch_syms
15727 #define elf_backend_object_p nds32_elf_object_p
15728 #define elf_backend_final_write_processing nds32_elf_final_write_processing
15729 #define elf_backend_special_sections nds32_elf_special_sections
15730 #define bfd_elf32_bfd_get_relocated_section_contents \
15731 nds32_elf_get_relocated_section_contents
15733 #define elf_backend_can_gc_sections 1
15734 #define elf_backend_can_refcount 1
15735 #define elf_backend_want_got_plt 1
15736 #define elf_backend_plt_readonly 1
15737 #define elf_backend_want_plt_sym 0
15738 #define elf_backend_got_header_size 12
15739 #define elf_backend_may_use_rel_p 1
15740 #define elf_backend_default_use_rela_p 1
15741 #define elf_backend_may_use_rela_p 1
15743 #include "elf32-target.h"
15745 #undef ELF_MAXPAGESIZE
15746 #define ELF_MAXPAGESIZE 0x2000
15748 #undef TARGET_BIG_SYM
15749 #define TARGET_BIG_SYM nds32_elf32_linux_be_vec
15750 #undef TARGET_BIG_NAME
15751 #define TARGET_BIG_NAME "elf32-nds32be-linux"
15752 #undef TARGET_LITTLE_SYM
15753 #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec
15754 #undef TARGET_LITTLE_NAME
15755 #define TARGET_LITTLE_NAME "elf32-nds32le-linux"
15757 #define elf32_bed elf32_nds32_lin_bed
15759 #include "elf32-target.h"