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 (bfd *, bfd *);
81 static bfd_boolean nds32_elf_print_private_bfd_data (bfd *, void *);
82 static bfd_boolean nds32_elf_gc_sweep_hook
83 (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
84 static bfd_boolean nds32_elf_check_relocs
85 (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
86 static asection *nds32_elf_gc_mark_hook
87 (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
88 struct elf_link_hash_entry *, Elf_Internal_Sym *);
89 static bfd_boolean nds32_elf_adjust_dynamic_symbol
90 (struct bfd_link_info *, struct elf_link_hash_entry *);
91 static bfd_boolean nds32_elf_size_dynamic_sections
92 (bfd *, struct bfd_link_info *);
93 static bfd_boolean nds32_elf_create_dynamic_sections
94 (bfd *, struct bfd_link_info *);
95 static bfd_boolean nds32_elf_finish_dynamic_sections
96 (bfd *, struct bfd_link_info *info);
97 static bfd_boolean nds32_elf_finish_dynamic_symbol
98 (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
100 static bfd_boolean nds32_elf_mkobject (bfd *);
102 /* Nds32 helper functions. */
103 static bfd_reloc_status_type nds32_elf_final_sda_base
104 (bfd *, struct bfd_link_info *, bfd_vma *, bfd_boolean);
105 static bfd_boolean allocate_dynrelocs (struct elf_link_hash_entry *, void *);
106 static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *, void *);
107 static Elf_Internal_Rela *find_relocs_at_address
108 (Elf_Internal_Rela *, Elf_Internal_Rela *,
109 Elf_Internal_Rela *, enum elf_nds32_reloc_type);
110 static bfd_vma calculate_memory_address
111 (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *);
112 static int nds32_get_section_contents (bfd *, asection *,
113 bfd_byte **, bfd_boolean);
114 static bfd_boolean nds32_elf_ex9_build_hash_table
115 (bfd *, asection *, struct bfd_link_info *);
116 static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *);
117 static void nds32_elf_ex9_import_table (struct bfd_link_info *);
118 static void nds32_elf_ex9_finish (struct bfd_link_info *);
119 static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *);
120 static void nds32_elf_get_insn_with_reg
121 (Elf_Internal_Rela *, uint32_t, uint32_t *);
122 static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED,
123 Elf_Internal_Sym **);
124 static bfd_boolean nds32_elf_ex9_replace_instruction
125 (struct bfd_link_info *, bfd *, asection *);
126 static bfd_boolean nds32_elf_ifc_calc (struct bfd_link_info *, bfd *,
128 static bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *);
129 static bfd_boolean nds32_elf_ifc_replace (struct bfd_link_info *);
130 static bfd_boolean nds32_elf_ifc_reloc (void);
131 static bfd_boolean nds32_relax_fp_as_gp
132 (struct bfd_link_info *link_info, bfd *abfd, asection *sec,
133 Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend,
134 Elf_Internal_Sym *isymbuf);
135 static bfd_boolean nds32_fag_remove_unused_fpbase
136 (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs,
137 Elf_Internal_Rela *irelend);
139 nds32_elf_get_relocated_section_contents (bfd *abfd,
140 struct bfd_link_info *link_info,
141 struct bfd_link_order *link_order,
143 bfd_boolean relocatable,
148 MACH_V1 = bfd_mach_n1h,
149 MACH_V2 = bfd_mach_n1h_v2,
150 MACH_V3 = bfd_mach_n1h_v3,
151 MACH_V3M = bfd_mach_n1h_v3m
154 #define MIN(a, b) ((a) > (b) ? (b) : (a))
155 #define MAX(a, b) ((a) > (b) ? (a) : (b))
157 /* The name of the dynamic interpreter. This is put in the .interp
159 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
161 /* The nop opcode we use. */
162 #define NDS32_NOP32 0x40000009
163 #define NDS32_NOP16 0x9200
165 /* The size in bytes of an entry in the procedure linkage table. */
166 #define PLT_ENTRY_SIZE 24
167 #define PLT_HEADER_SIZE 24
169 /* The first entry in a procedure linkage table are reserved,
170 and the initial contents are unimportant (we zero them out).
171 Subsequent entries look like this. */
172 #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */
173 #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */
174 #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */
175 #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */
176 #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */
178 /* $ta is change to $r15 (from $r25). */
179 #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */
180 #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */
181 #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */
182 #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */
183 #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */
184 #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */
186 #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */
187 #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */
188 #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */
189 #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */
190 #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */
192 #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */
193 #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */
194 #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */
195 #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */
196 #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */
197 #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */
199 /* These are macros used to get the relocation accurate value. */
200 #define ACCURATE_8BIT_S1 (0x100)
201 #define ACCURATE_U9BIT_S1 (0x400)
202 #define ACCURATE_12BIT_S1 (0x2000)
203 #define ACCURATE_14BIT_S1 (0x4000)
204 #define ACCURATE_19BIT (0x40000)
206 /* These are macros used to get the relocation conservative value. */
207 #define CONSERVATIVE_8BIT_S1 (0x100 - 4)
208 #define CONSERVATIVE_14BIT_S1 (0x4000 - 4)
209 #define CONSERVATIVE_16BIT_S1 (0x10000 - 4)
210 #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4)
211 /* These must be more conservative because the address may be in
212 different segment. */
213 #define CONSERVATIVE_15BIT (0x4000 - 0x1000)
214 #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000)
215 #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000)
216 #define CONSERVATIVE_19BIT (0x40000 - 0x1000)
217 #define CONSERVATIVE_20BIT (0x80000 - 0x1000)
219 /* Size of small data/bss sections, used to calculate SDA_BASE. */
220 static long got_size = 0;
221 static int is_SDA_BASE_set = 0;
222 static int is_ITB_BASE_set = 0;
224 /* Convert ELF-VER in eflags to string for debugging purpose. */
225 static const char *const nds32_elfver_strtab[] =
232 /* The nds32 linker needs to keep track of the number of relocs that it
233 decides to copy in check_relocs for each symbol. This is so that
234 it can discard PC relative relocs if it doesn't need them when
235 linking with -Bsymbolic. We store the information in a field
236 extending the regular ELF linker hash table. */
238 /* This structure keeps track of the number of PC relative relocs we
239 have copied for a given symbol. */
241 struct elf_nds32_pcrel_relocs_copied
244 struct elf_nds32_pcrel_relocs_copied *next;
245 /* A section in dynobj. */
247 /* Number of relocs copied in this section. */
251 /* The sh linker needs to keep track of the number of relocs that it
252 decides to copy as dynamic relocs in check_relocs for each symbol.
253 This is so that it can later discard them if they are found to be
254 unnecessary. We store the information in a field extending the
255 regular ELF linker hash table. */
257 struct elf_nds32_dyn_relocs
259 struct elf_nds32_dyn_relocs *next;
261 /* The input section of the reloc. */
264 /* Total number of relocs copied for the input section. */
267 /* Number of pc-relative relocs copied for the input section. */
268 bfd_size_type pc_count;
271 /* Nds32 ELF linker hash entry. */
273 struct elf_nds32_link_hash_entry
275 struct elf_link_hash_entry root;
277 /* Track dynamic relocs copied for this symbol. */
278 struct elf_nds32_dyn_relocs *dyn_relocs;
280 /* For checking relocation type. */
281 #define GOT_UNKNOWN 0
284 unsigned int tls_type;
287 /* Get the nds32 ELF linker hash table from a link_info structure. */
289 #define FP_BASE_NAME "_FP_BASE_"
290 static int check_start_export_sym = 0;
291 static size_t ex9_relax_size = 0; /* Save ex9 predicted reducing size. */
293 /* The offset for executable tls relaxation. */
294 #define TP_OFFSET 0x0
296 struct elf_nds32_obj_tdata
298 struct elf_obj_tdata root;
300 /* tls_type for each local got entry. */
301 char *local_got_tls_type;
304 #define elf_nds32_tdata(bfd) \
305 ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any)
307 #define elf32_nds32_local_got_tls_type(bfd) \
308 (elf_nds32_tdata (bfd)->local_got_tls_type)
310 #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent))
313 nds32_elf_mkobject (bfd *abfd)
315 return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata),
319 /* Relocations used for relocation. */
320 static reloc_howto_type nds32_elf_howto_table[] =
322 /* This reloc does nothing. */
323 HOWTO (R_NDS32_NONE, /* type */
325 3, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_dont, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_NDS32_NONE", /* name */
332 FALSE, /* partial_inplace */
335 FALSE), /* pcrel_offset */
337 /* A 16 bit absolute relocation. */
338 HOWTO (R_NDS32_16, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 nds32_elf_generic_reloc, /* special_function */
346 "R_NDS32_16", /* name */
347 FALSE, /* partial_inplace */
348 0xffff, /* src_mask */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* A 32 bit absolute relocation. */
353 HOWTO (R_NDS32_32, /* type */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
357 FALSE, /* pc_relative */
359 complain_overflow_bitfield, /* complain_on_overflow */
360 nds32_elf_generic_reloc, /* special_function */
361 "R_NDS32_32", /* name */
362 FALSE, /* partial_inplace */
363 0xffffffff, /* src_mask */
364 0xffffffff, /* dst_mask */
365 FALSE), /* pcrel_offset */
367 /* A 20 bit address. */
368 HOWTO (R_NDS32_20, /* type */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
372 FALSE, /* pc_relative */
374 complain_overflow_unsigned, /* complain_on_overflow */
375 nds32_elf_generic_reloc, /* special_function */
376 "R_NDS32_20", /* name */
377 FALSE, /* partial_inplace */
378 0xfffff, /* src_mask */
379 0xfffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
382 /* An PC Relative 9-bit relocation, shifted by 2.
383 This reloc is complicated because relocations are relative to pc & -4.
384 i.e. branches in the right insn slot use the address of the left insn
386 /* ??? It's not clear whether this should have partial_inplace set or not.
387 Branch relaxing in the assembler can store the addend in the insn,
388 and if bfd_install_relocation gets called the addend may get added
390 HOWTO (R_NDS32_9_PCREL, /* type */
392 1, /* size (0 = byte, 1 = short, 2 = long) */
394 TRUE, /* pc_relative */
396 complain_overflow_signed, /* complain_on_overflow */
397 nds32_elf_9_pcrel_reloc, /* special_function */
398 "R_NDS32_9_PCREL", /* name */
399 FALSE, /* partial_inplace */
402 TRUE), /* pcrel_offset */
404 /* A relative 15 bit relocation, right shifted by 1. */
405 HOWTO (R_NDS32_15_PCREL, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 TRUE, /* pc_relative */
411 complain_overflow_signed, /* complain_on_overflow */
412 bfd_elf_generic_reloc, /* special_function */
413 "R_NDS32_15_PCREL", /* name */
414 FALSE, /* partial_inplace */
415 0x3fff, /* src_mask */
416 0x3fff, /* dst_mask */
417 TRUE), /* pcrel_offset */
419 /* A relative 17 bit relocation, right shifted by 1. */
420 HOWTO (R_NDS32_17_PCREL, /* type */
422 2, /* size (0 = byte, 1 = short, 2 = long) */
424 TRUE, /* pc_relative */
426 complain_overflow_signed, /* complain_on_overflow */
427 bfd_elf_generic_reloc, /* special_function */
428 "R_NDS32_17_PCREL", /* name */
429 FALSE, /* partial_inplace */
430 0xffff, /* src_mask */
431 0xffff, /* dst_mask */
432 TRUE), /* pcrel_offset */
434 /* A relative 25 bit relocation, right shifted by 1. */
435 /* ??? It's not clear whether this should have partial_inplace set or not.
436 Branch relaxing in the assembler can store the addend in the insn,
437 and if bfd_install_relocation gets called the addend may get added
439 HOWTO (R_NDS32_25_PCREL, /* type */
441 2, /* size (0 = byte, 1 = short, 2 = long) */
443 TRUE, /* pc_relative */
445 complain_overflow_signed, /* complain_on_overflow */
446 bfd_elf_generic_reloc, /* special_function */
447 "R_NDS32_25_PCREL", /* name */
448 FALSE, /* partial_inplace */
449 0xffffff, /* src_mask */
450 0xffffff, /* dst_mask */
451 TRUE), /* pcrel_offset */
453 /* High 20 bits of address when lower 12 is or'd in. */
454 HOWTO (R_NDS32_HI20, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE, /* pc_relative */
460 complain_overflow_dont,/* complain_on_overflow */
461 nds32_elf_hi20_reloc, /* special_function */
462 "R_NDS32_HI20", /* name */
463 FALSE, /* partial_inplace */
464 0x000fffff, /* src_mask */
465 0x000fffff, /* dst_mask */
466 FALSE), /* pcrel_offset */
468 /* Lower 12 bits of address. */
469 HOWTO (R_NDS32_LO12S3, /* type */
471 2, /* size (0 = byte, 1 = short, 2 = long) */
473 FALSE, /* pc_relative */
475 complain_overflow_dont,/* complain_on_overflow */
476 nds32_elf_lo12_reloc, /* special_function */
477 "R_NDS32_LO12S3", /* name */
478 FALSE, /* partial_inplace */
479 0x000001ff, /* src_mask */
480 0x000001ff, /* dst_mask */
481 FALSE), /* pcrel_offset */
483 /* Lower 12 bits of address. */
484 HOWTO (R_NDS32_LO12S2, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 nds32_elf_lo12_reloc, /* special_function */
492 "R_NDS32_LO12S2", /* name */
493 FALSE, /* partial_inplace */
494 0x000003ff, /* src_mask */
495 0x000003ff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Lower 12 bits of address. */
499 HOWTO (R_NDS32_LO12S1, /* type */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE, /* pc_relative */
505 complain_overflow_dont,/* complain_on_overflow */
506 nds32_elf_lo12_reloc, /* special_function */
507 "R_NDS32_LO12S1", /* name */
508 FALSE, /* partial_inplace */
509 0x000007ff, /* src_mask */
510 0x000007ff, /* dst_mask */
511 FALSE), /* pcrel_offset */
513 /* Lower 12 bits of address. */
514 HOWTO (R_NDS32_LO12S0, /* type */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE, /* pc_relative */
520 complain_overflow_dont,/* complain_on_overflow */
521 nds32_elf_lo12_reloc, /* special_function */
522 "R_NDS32_LO12S0", /* name */
523 FALSE, /* partial_inplace */
524 0x00000fff, /* src_mask */
525 0x00000fff, /* dst_mask */
526 FALSE), /* pcrel_offset */
528 /* Small data area 15 bits offset. */
529 HOWTO (R_NDS32_SDA15S3, /* type */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE, /* pc_relative */
535 complain_overflow_signed, /* complain_on_overflow */
536 nds32_elf_sda15_reloc, /* special_function */
537 "R_NDS32_SDA15S3", /* name */
538 FALSE, /* partial_inplace */
539 0x00007fff, /* src_mask */
540 0x00007fff, /* dst_mask */
541 FALSE), /* pcrel_offset */
543 /* Small data area 15 bits offset. */
544 HOWTO (R_NDS32_SDA15S2, /* type */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE, /* pc_relative */
550 complain_overflow_signed, /* complain_on_overflow */
551 nds32_elf_sda15_reloc, /* special_function */
552 "R_NDS32_SDA15S2", /* name */
553 FALSE, /* partial_inplace */
554 0x00007fff, /* src_mask */
555 0x00007fff, /* dst_mask */
556 FALSE), /* pcrel_offset */
558 /* Small data area 15 bits offset. */
559 HOWTO (R_NDS32_SDA15S1, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 FALSE, /* pc_relative */
565 complain_overflow_signed, /* complain_on_overflow */
566 nds32_elf_sda15_reloc, /* special_function */
567 "R_NDS32_SDA15S1", /* name */
568 FALSE, /* partial_inplace */
569 0x00007fff, /* src_mask */
570 0x00007fff, /* dst_mask */
571 FALSE), /* pcrel_offset */
573 /* Small data area 15 bits offset. */
574 HOWTO (R_NDS32_SDA15S0, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 FALSE, /* pc_relative */
580 complain_overflow_signed, /* complain_on_overflow */
581 nds32_elf_sda15_reloc, /* special_function */
582 "R_NDS32_SDA15S0", /* name */
583 FALSE, /* partial_inplace */
584 0x00007fff, /* src_mask */
585 0x00007fff, /* dst_mask */
586 FALSE), /* pcrel_offset */
588 /* GNU extension to record C++ vtable hierarchy */
589 HOWTO (R_NDS32_GNU_VTINHERIT, /* type */
591 2, /* size (0 = byte, 1 = short, 2 = long) */
593 FALSE, /* pc_relative */
595 complain_overflow_dont,/* complain_on_overflow */
596 NULL, /* special_function */
597 "R_NDS32_GNU_VTINHERIT", /* name */
598 FALSE, /* partial_inplace */
601 FALSE), /* pcrel_offset */
603 /* GNU extension to record C++ vtable member usage */
604 HOWTO (R_NDS32_GNU_VTENTRY, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE, /* pc_relative */
610 complain_overflow_dont,/* complain_on_overflow */
611 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
612 "R_NDS32_GNU_VTENTRY", /* name */
613 FALSE, /* partial_inplace */
616 FALSE), /* pcrel_offset */
618 /* A 16 bit absolute relocation. */
619 HOWTO (R_NDS32_16_RELA, /* type */
621 1, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE, /* pc_relative */
625 complain_overflow_bitfield, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_NDS32_16_RELA", /* name */
628 FALSE, /* partial_inplace */
629 0xffff, /* src_mask */
630 0xffff, /* dst_mask */
631 FALSE), /* pcrel_offset */
633 /* A 32 bit absolute relocation. */
634 HOWTO (R_NDS32_32_RELA, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 FALSE, /* pc_relative */
640 complain_overflow_bitfield, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_NDS32_32_RELA", /* name */
643 FALSE, /* partial_inplace */
644 0xffffffff, /* src_mask */
645 0xffffffff, /* dst_mask */
646 FALSE), /* pcrel_offset */
648 /* A 20 bit address. */
649 HOWTO (R_NDS32_20_RELA, /* type */
651 2, /* size (0 = byte, 1 = short, 2 = long) */
653 FALSE, /* pc_relative */
655 complain_overflow_signed, /* complain_on_overflow */
656 bfd_elf_generic_reloc, /* special_function */
657 "R_NDS32_20_RELA", /* name */
658 FALSE, /* partial_inplace */
659 0xfffff, /* src_mask */
660 0xfffff, /* dst_mask */
661 FALSE), /* pcrel_offset */
663 HOWTO (R_NDS32_9_PCREL_RELA, /* type */
665 1, /* size (0 = byte, 1 = short, 2 = long) */
667 TRUE, /* pc_relative */
669 complain_overflow_signed, /* complain_on_overflow */
670 bfd_elf_generic_reloc, /* special_function */
671 "R_NDS32_9_PCREL_RELA",/* name */
672 FALSE, /* partial_inplace */
675 TRUE), /* pcrel_offset */
677 /* A relative 15 bit relocation, right shifted by 1. */
678 HOWTO (R_NDS32_15_PCREL_RELA, /* type */
680 2, /* size (0 = byte, 1 = short, 2 = long) */
682 TRUE, /* pc_relative */
684 complain_overflow_signed, /* complain_on_overflow */
685 bfd_elf_generic_reloc, /* special_function */
686 "R_NDS32_15_PCREL_RELA", /* name */
687 FALSE, /* partial_inplace */
688 0x3fff, /* src_mask */
689 0x3fff, /* dst_mask */
690 TRUE), /* pcrel_offset */
692 /* A relative 17 bit relocation, right shifted by 1. */
693 HOWTO (R_NDS32_17_PCREL_RELA, /* type */
695 2, /* size (0 = byte, 1 = short, 2 = long) */
697 TRUE, /* pc_relative */
699 complain_overflow_signed, /* complain_on_overflow */
700 bfd_elf_generic_reloc, /* special_function */
701 "R_NDS32_17_PCREL_RELA", /* name */
702 FALSE, /* partial_inplace */
703 0xffff, /* src_mask */
704 0xffff, /* dst_mask */
705 TRUE), /* pcrel_offset */
707 /* A relative 25 bit relocation, right shifted by 2. */
708 HOWTO (R_NDS32_25_PCREL_RELA, /* type */
710 2, /* size (0 = byte, 1 = short, 2 = long) */
712 TRUE, /* pc_relative */
714 complain_overflow_signed, /* complain_on_overflow */
715 bfd_elf_generic_reloc, /* special_function */
716 "R_NDS32_25_PCREL_RELA", /* name */
717 FALSE, /* partial_inplace */
718 0xffffff, /* src_mask */
719 0xffffff, /* dst_mask */
720 TRUE), /* pcrel_offset */
722 /* High 20 bits of address when lower 16 is or'd in. */
723 HOWTO (R_NDS32_HI20_RELA, /* type */
725 2, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont,/* complain_on_overflow */
730 bfd_elf_generic_reloc, /* special_function */
731 "R_NDS32_HI20_RELA", /* name */
732 FALSE, /* partial_inplace */
733 0x000fffff, /* src_mask */
734 0x000fffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* Lower 12 bits of address. */
738 HOWTO (R_NDS32_LO12S3_RELA, /* type */
740 2, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont,/* complain_on_overflow */
745 bfd_elf_generic_reloc, /* special_function */
746 "R_NDS32_LO12S3_RELA", /* name */
747 FALSE, /* partial_inplace */
748 0x000001ff, /* src_mask */
749 0x000001ff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* Lower 12 bits of address. */
753 HOWTO (R_NDS32_LO12S2_RELA, /* type */
755 2, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont,/* complain_on_overflow */
760 bfd_elf_generic_reloc, /* special_function */
761 "R_NDS32_LO12S2_RELA", /* name */
762 FALSE, /* partial_inplace */
763 0x000003ff, /* src_mask */
764 0x000003ff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Lower 12 bits of address. */
768 HOWTO (R_NDS32_LO12S1_RELA, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 FALSE, /* pc_relative */
774 complain_overflow_dont,/* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_NDS32_LO12S1_RELA", /* name */
777 FALSE, /* partial_inplace */
778 0x000007ff, /* src_mask */
779 0x000007ff, /* dst_mask */
780 FALSE), /* pcrel_offset */
782 /* Lower 12 bits of address. */
783 HOWTO (R_NDS32_LO12S0_RELA, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 FALSE, /* pc_relative */
789 complain_overflow_dont,/* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_NDS32_LO12S0_RELA", /* name */
792 FALSE, /* partial_inplace */
793 0x00000fff, /* src_mask */
794 0x00000fff, /* dst_mask */
795 FALSE), /* pcrel_offset */
797 /* Small data area 15 bits offset. */
798 HOWTO (R_NDS32_SDA15S3_RELA, /* type */
800 2, /* size (0 = byte, 1 = short, 2 = long) */
802 FALSE, /* pc_relative */
804 complain_overflow_signed, /* complain_on_overflow */
805 bfd_elf_generic_reloc, /* special_function */
806 "R_NDS32_SDA15S3_RELA",/* name */
807 FALSE, /* partial_inplace */
808 0x00007fff, /* src_mask */
809 0x00007fff, /* dst_mask */
810 FALSE), /* pcrel_offset */
812 /* Small data area 15 bits offset. */
813 HOWTO (R_NDS32_SDA15S2_RELA, /* type */
815 2, /* size (0 = byte, 1 = short, 2 = long) */
817 FALSE, /* pc_relative */
819 complain_overflow_signed, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_NDS32_SDA15S2_RELA",/* name */
822 FALSE, /* partial_inplace */
823 0x00007fff, /* src_mask */
824 0x00007fff, /* dst_mask */
825 FALSE), /* pcrel_offset */
827 HOWTO (R_NDS32_SDA15S1_RELA, /* type */
829 2, /* size (0 = byte, 1 = short, 2 = long) */
831 FALSE, /* pc_relative */
833 complain_overflow_signed, /* complain_on_overflow */
834 bfd_elf_generic_reloc, /* special_function */
835 "R_NDS32_SDA15S1_RELA",/* name */
836 FALSE, /* partial_inplace */
837 0x00007fff, /* src_mask */
838 0x00007fff, /* dst_mask */
839 FALSE), /* pcrel_offset */
841 HOWTO (R_NDS32_SDA15S0_RELA, /* type */
843 2, /* size (0 = byte, 1 = short, 2 = long) */
845 FALSE, /* pc_relative */
847 complain_overflow_signed, /* complain_on_overflow */
848 bfd_elf_generic_reloc, /* special_function */
849 "R_NDS32_SDA15S0_RELA",/* name */
850 FALSE, /* partial_inplace */
851 0x00007fff, /* src_mask */
852 0x00007fff, /* dst_mask */
853 FALSE), /* pcrel_offset */
855 /* GNU extension to record C++ vtable hierarchy */
856 HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE, /* pc_relative */
862 complain_overflow_dont,/* complain_on_overflow */
863 NULL, /* special_function */
864 "R_NDS32_RELA_GNU_VTINHERIT", /* name */
865 FALSE, /* partial_inplace */
868 FALSE), /* pcrel_offset */
870 /* GNU extension to record C++ vtable member usage */
871 HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */
873 2, /* size (0 = byte, 1 = short, 2 = long) */
875 FALSE, /* pc_relative */
877 complain_overflow_dont,/* complain_on_overflow */
878 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
879 "R_NDS32_RELA_GNU_VTENTRY", /* name */
880 FALSE, /* partial_inplace */
883 FALSE), /* pcrel_offset */
885 /* Like R_NDS32_20, but referring to the GOT table entry for
887 HOWTO (R_NDS32_GOT20, /* type */
889 2, /* size (0 = byte, 1 = short, 2 = long) */
891 FALSE, /* pc_relative */
893 complain_overflow_signed, /* complain_on_overflow */
894 bfd_elf_generic_reloc, /* special_function */
895 "R_NDS32_GOT20", /* name */
896 FALSE, /* partial_inplace */
897 0xfffff, /* src_mask */
898 0xfffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
901 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
902 entry for the symbol. */
903 HOWTO (R_NDS32_25_PLTREL, /* type */
905 2, /* size (0 = byte, 1 = short, 2 = long) */
907 TRUE, /* pc_relative */
909 complain_overflow_signed, /* complain_on_overflow */
910 bfd_elf_generic_reloc, /* special_function */
911 "R_NDS32_25_PLTREL", /* name */
912 FALSE, /* partial_inplace */
913 0xffffff, /* src_mask */
914 0xffffff, /* dst_mask */
915 TRUE), /* pcrel_offset */
917 /* This is used only by the dynamic linker. The symbol should exist
918 both in the object being run and in some shared library. The
919 dynamic linker copies the data addressed by the symbol from the
920 shared library into the object, because the object being
921 run has to have the data at some particular address. */
922 HOWTO (R_NDS32_COPY, /* type */
924 2, /* size (0 = byte, 1 = short, 2 = long) */
926 FALSE, /* pc_relative */
928 complain_overflow_bitfield, /* complain_on_overflow */
929 bfd_elf_generic_reloc, /* special_function */
930 "R_NDS32_COPY", /* name */
931 FALSE, /* partial_inplace */
932 0xffffffff, /* src_mask */
933 0xffffffff, /* dst_mask */
934 FALSE), /* pcrel_offset */
936 /* Like R_NDS32_20, but used when setting global offset table
938 HOWTO (R_NDS32_GLOB_DAT, /* type */
940 2, /* size (0 = byte, 1 = short, 2 = long) */
942 FALSE, /* pc_relative */
944 complain_overflow_bitfield, /* complain_on_overflow */
945 bfd_elf_generic_reloc, /* special_function */
946 "R_NDS32_GLOB_DAT", /* name */
947 FALSE, /* partial_inplace */
948 0xffffffff, /* src_mask */
949 0xffffffff, /* dst_mask */
950 FALSE), /* pcrel_offset */
952 /* Marks a procedure linkage table entry for a symbol. */
953 HOWTO (R_NDS32_JMP_SLOT, /* type */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE, /* pc_relative */
959 complain_overflow_bitfield, /* complain_on_overflow */
960 bfd_elf_generic_reloc, /* special_function */
961 "R_NDS32_JMP_SLOT", /* name */
962 FALSE, /* partial_inplace */
963 0xffffffff, /* src_mask */
964 0xffffffff, /* dst_mask */
965 FALSE), /* pcrel_offset */
967 /* Used only by the dynamic linker. When the object is run, this
968 longword is set to the load address of the object, plus the
970 HOWTO (R_NDS32_RELATIVE, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE, /* pc_relative */
976 complain_overflow_bitfield, /* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_NDS32_RELATIVE", /* name */
979 FALSE, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
984 HOWTO (R_NDS32_GOTOFF, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 FALSE, /* pc_relative */
990 complain_overflow_signed, /* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_NDS32_GOTOFF", /* name */
993 FALSE, /* partial_inplace */
994 0xfffff, /* src_mask */
995 0xfffff, /* dst_mask */
996 FALSE), /* pcrel_offset */
998 /* An PC Relative 20-bit relocation used when setting PIC offset
1000 HOWTO (R_NDS32_GOTPC20, /* type */
1002 2, /* size (0 = byte, 1 = short, 2 = long) */
1004 TRUE, /* pc_relative */
1006 complain_overflow_signed, /* complain_on_overflow */
1007 bfd_elf_generic_reloc, /* special_function */
1008 "R_NDS32_GOTPC20", /* name */
1009 FALSE, /* partial_inplace */
1010 0xfffff, /* src_mask */
1011 0xfffff, /* dst_mask */
1012 TRUE), /* pcrel_offset */
1014 /* Like R_NDS32_HI20, but referring to the GOT table entry for
1016 HOWTO (R_NDS32_GOT_HI20, /* type */
1017 12, /* rightshift */
1018 2, /* size (0 = byte, 1 = short, 2 = long) */
1020 FALSE, /* pc_relative */
1022 complain_overflow_dont,/* complain_on_overflow */
1023 bfd_elf_generic_reloc, /* special_function */
1024 "R_NDS32_GOT_HI20", /* name */
1025 FALSE, /* partial_inplace */
1026 0x000fffff, /* src_mask */
1027 0x000fffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1029 HOWTO (R_NDS32_GOT_LO12, /* type */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 FALSE, /* pc_relative */
1035 complain_overflow_dont,/* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_NDS32_GOT_LO12", /* name */
1038 FALSE, /* partial_inplace */
1039 0x00000fff, /* src_mask */
1040 0x00000fff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1043 /* An PC Relative relocation used when setting PIC offset table register.
1044 Like R_NDS32_HI20, but referring to the GOT table entry for
1046 HOWTO (R_NDS32_GOTPC_HI20, /* type */
1047 12, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1050 FALSE, /* pc_relative */
1052 complain_overflow_dont,/* complain_on_overflow */
1053 bfd_elf_generic_reloc, /* special_function */
1054 "R_NDS32_GOTPC_HI20", /* name */
1055 FALSE, /* partial_inplace */
1056 0x000fffff, /* src_mask */
1057 0x000fffff, /* dst_mask */
1058 TRUE), /* pcrel_offset */
1059 HOWTO (R_NDS32_GOTPC_LO12, /* type */
1061 2, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE, /* pc_relative */
1065 complain_overflow_dont, /* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_NDS32_GOTPC_LO12", /* name */
1068 FALSE, /* partial_inplace */
1069 0x00000fff, /* src_mask */
1070 0x00000fff, /* dst_mask */
1071 TRUE), /* pcrel_offset */
1073 HOWTO (R_NDS32_GOTOFF_HI20, /* type */
1074 12, /* rightshift */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_NDS32_GOTOFF_HI20", /* name */
1082 FALSE, /* partial_inplace */
1083 0x000fffff, /* src_mask */
1084 0x000fffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086 HOWTO (R_NDS32_GOTOFF_LO12, /* type */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE, /* pc_relative */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_NDS32_GOTOFF_LO12", /* name */
1095 FALSE, /* partial_inplace */
1096 0x00000fff, /* src_mask */
1097 0x00000fff, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1100 /* Alignment hint for relaxable instruction. This is used with
1101 R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2
1102 in order to make next label aligned on word boundary. */
1103 HOWTO (R_NDS32_INSN16, /* type */
1105 2, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_dont,/* complain_on_overflow */
1110 nds32_elf_ignore_reloc,/* special_function */
1111 "R_NDS32_INSN16", /* name */
1112 FALSE, /* partial_inplace */
1113 0x00000fff, /* src_mask */
1114 0x00000fff, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Alignment hint for label. */
1118 HOWTO (R_NDS32_LABEL, /* type */
1120 2, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_dont,/* complain_on_overflow */
1125 nds32_elf_ignore_reloc,/* special_function */
1126 "R_NDS32_LABEL", /* name */
1127 FALSE, /* partial_inplace */
1128 0xffffffff, /* src_mask */
1129 0xffffffff, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Relax hint for unconditional call sequence */
1133 HOWTO (R_NDS32_LONGCALL1, /* type */
1135 2, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_dont,/* complain_on_overflow */
1140 nds32_elf_ignore_reloc,/* special_function */
1141 "R_NDS32_LONGCALL1", /* name */
1142 FALSE, /* partial_inplace */
1143 0xffffffff, /* src_mask */
1144 0xffffffff, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Relax hint for conditional call sequence. */
1148 HOWTO (R_NDS32_LONGCALL2, /* type */
1150 2, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_dont,/* complain_on_overflow */
1155 nds32_elf_ignore_reloc,/* special_function */
1156 "R_NDS32_LONGCALL2", /* name */
1157 FALSE, /* partial_inplace */
1158 0xffffffff, /* src_mask */
1159 0xffffffff, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Relax hint for conditional call sequence. */
1163 HOWTO (R_NDS32_LONGCALL3, /* type */
1165 2, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_dont,/* complain_on_overflow */
1170 nds32_elf_ignore_reloc,/* special_function */
1171 "R_NDS32_LONGCALL3", /* name */
1172 FALSE, /* partial_inplace */
1173 0xffffffff, /* src_mask */
1174 0xffffffff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Relax hint for unconditional branch sequence. */
1178 HOWTO (R_NDS32_LONGJUMP1, /* type */
1180 2, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont,/* complain_on_overflow */
1185 nds32_elf_ignore_reloc,/* special_function */
1186 "R_NDS32_LONGJUMP1", /* name */
1187 FALSE, /* partial_inplace */
1188 0xffffffff, /* src_mask */
1189 0xffffffff, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Relax hint for conditional branch sequence. */
1193 HOWTO (R_NDS32_LONGJUMP2, /* type */
1195 2, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_dont,/* complain_on_overflow */
1200 nds32_elf_ignore_reloc,/* special_function */
1201 "R_NDS32_LONGJUMP2", /* name */
1202 FALSE, /* partial_inplace */
1203 0xffffffff, /* src_mask */
1204 0xffffffff, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Relax hint for conditional branch sequence. */
1208 HOWTO (R_NDS32_LONGJUMP3, /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE, /* pc_relative */
1214 complain_overflow_dont,/* complain_on_overflow */
1215 nds32_elf_ignore_reloc,/* special_function */
1216 "R_NDS32_LONGJUMP3", /* name */
1217 FALSE, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1222 /* Relax hint for load/store sequence. */
1223 HOWTO (R_NDS32_LOADSTORE, /* type */
1225 2, /* size (0 = byte, 1 = short, 2 = long) */
1227 FALSE, /* pc_relative */
1229 complain_overflow_dont,/* complain_on_overflow */
1230 nds32_elf_ignore_reloc,/* special_function */
1231 "R_NDS32_LOADSTORE", /* name */
1232 FALSE, /* partial_inplace */
1233 0xffffffff, /* src_mask */
1234 0xffffffff, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1237 /* Relax hint for load/store sequence. */
1238 HOWTO (R_NDS32_9_FIXED_RELA, /* type */
1240 1, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE, /* pc_relative */
1244 complain_overflow_dont,/* complain_on_overflow */
1245 nds32_elf_ignore_reloc,/* special_function */
1246 "R_NDS32_9_FIXED_RELA",/* name */
1247 FALSE, /* partial_inplace */
1248 0x000000ff, /* src_mask */
1249 0x000000ff, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1252 /* Relax hint for load/store sequence. */
1253 HOWTO (R_NDS32_15_FIXED_RELA, /* type */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE, /* pc_relative */
1259 complain_overflow_dont,/* complain_on_overflow */
1260 nds32_elf_ignore_reloc,/* special_function */
1261 "R_NDS32_15_FIXED_RELA", /* name */
1262 FALSE, /* partial_inplace */
1263 0x00003fff, /* src_mask */
1264 0x00003fff, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1267 /* Relax hint for load/store sequence. */
1268 HOWTO (R_NDS32_17_FIXED_RELA, /* type */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE, /* pc_relative */
1274 complain_overflow_dont,/* complain_on_overflow */
1275 nds32_elf_ignore_reloc,/* special_function */
1276 "R_NDS32_17_FIXED_RELA", /* name */
1277 FALSE, /* partial_inplace */
1278 0x0000ffff, /* src_mask */
1279 0x0000ffff, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1282 /* Relax hint for load/store sequence. */
1283 HOWTO (R_NDS32_25_FIXED_RELA, /* type */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE, /* pc_relative */
1289 complain_overflow_dont,/* complain_on_overflow */
1290 nds32_elf_ignore_reloc,/* special_function */
1291 "R_NDS32_25_FIXED_RELA", /* name */
1292 FALSE, /* partial_inplace */
1293 0x00ffffff, /* src_mask */
1294 0x00ffffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1297 /* High 20 bits of PLT symbol offset relative to PC. */
1298 HOWTO (R_NDS32_PLTREL_HI20, /* type */
1299 12, /* rightshift */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE, /* pc_relative */
1304 complain_overflow_dont,/* complain_on_overflow */
1305 bfd_elf_generic_reloc, /* special_function */
1306 "R_NDS32_PLTREL_HI20", /* name */
1307 FALSE, /* partial_inplace */
1308 0x000fffff, /* src_mask */
1309 0x000fffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1312 /* Low 12 bits of PLT symbol offset relative to PC. */
1313 HOWTO (R_NDS32_PLTREL_LO12, /* type */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE, /* pc_relative */
1319 complain_overflow_dont,/* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_NDS32_PLTREL_LO12", /* name */
1322 FALSE, /* partial_inplace */
1323 0x00000fff, /* src_mask */
1324 0x00000fff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1327 /* High 20 bits of PLT symbol offset relative to GOT (GP). */
1328 HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */
1329 12, /* rightshift */
1330 2, /* size (0 = byte, 1 = short, 2 = long) */
1332 FALSE, /* pc_relative */
1334 complain_overflow_dont,/* complain_on_overflow */
1335 bfd_elf_generic_reloc, /* special_function */
1336 "R_NDS32_PLT_GOTREL_HI20", /* name */
1337 FALSE, /* partial_inplace */
1338 0x000fffff, /* src_mask */
1339 0x000fffff, /* dst_mask */
1340 FALSE), /* pcrel_offset */
1342 /* Low 12 bits of PLT symbol offset relative to GOT (GP). */
1343 HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */
1345 2, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE, /* pc_relative */
1349 complain_overflow_dont,/* complain_on_overflow */
1350 bfd_elf_generic_reloc, /* special_function */
1351 "R_NDS32_PLT_GOTREL_LO12", /* name */
1352 FALSE, /* partial_inplace */
1353 0x00000fff, /* src_mask */
1354 0x00000fff, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1357 /* Small data area 12 bits offset. */
1358 HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE, /* pc_relative */
1364 complain_overflow_signed, /* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 "R_NDS32_SDA12S2_DP_RELA", /* name */
1367 FALSE, /* partial_inplace */
1368 0x00000fff, /* src_mask */
1369 0x00000fff, /* dst_mask */
1370 FALSE), /* pcrel_offset */
1372 /* Small data area 12 bits offset. */
1373 HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE, /* pc_relative */
1379 complain_overflow_signed, /* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_NDS32_SDA12S2_SP_RELA", /* name */
1382 FALSE, /* partial_inplace */
1383 0x00000fff, /* src_mask */
1384 0x00000fff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1386 /* Lower 12 bits of address. */
1388 HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */
1390 2, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_dont,/* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_NDS32_LO12S2_DP_RELA", /* name */
1397 FALSE, /* partial_inplace */
1398 0x000003ff, /* src_mask */
1399 0x000003ff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* Lower 12 bits of address. */
1403 HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */
1405 2, /* size (0 = byte, 1 = short, 2 = long) */
1407 FALSE, /* pc_relative */
1409 complain_overflow_dont,/* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_NDS32_LO12S2_SP_RELA", /* name */
1412 FALSE, /* partial_inplace */
1413 0x000003ff, /* src_mask */
1414 0x000003ff, /* dst_mask */
1415 FALSE), /* pcrel_offset */
1416 /* Lower 12 bits of address. Special identity for or case. */
1417 HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 FALSE, /* pc_relative */
1423 complain_overflow_dont,/* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_NDS32_LO12S0_ORI_RELA", /* name */
1426 FALSE, /* partial_inplace */
1427 0x00000fff, /* src_mask */
1428 0x00000fff, /* dst_mask */
1429 FALSE), /* pcrel_offset */
1430 /* Small data area 19 bits offset. */
1431 HOWTO (R_NDS32_SDA16S3_RELA, /* type */
1433 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_signed, /* complain_on_overflow */
1438 bfd_elf_generic_reloc, /* special_function */
1439 "R_NDS32_SDA16S3_RELA",/* name */
1440 FALSE, /* partial_inplace */
1441 0x0000ffff, /* src_mask */
1442 0x0000ffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Small data area 15 bits offset. */
1446 HOWTO (R_NDS32_SDA17S2_RELA, /* type */
1448 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_signed, /* complain_on_overflow */
1453 bfd_elf_generic_reloc, /* special_function */
1454 "R_NDS32_SDA17S2_RELA",/* name */
1455 FALSE, /* partial_inplace */
1456 0x0001ffff, /* src_mask */
1457 0x0001ffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 HOWTO (R_NDS32_SDA18S1_RELA, /* type */
1462 2, /* size (0 = byte, 1 = short, 2 = long) */
1464 FALSE, /* pc_relative */
1466 complain_overflow_signed, /* complain_on_overflow */
1467 bfd_elf_generic_reloc, /* special_function */
1468 "R_NDS32_SDA18S1_RELA",/* name */
1469 FALSE, /* partial_inplace */
1470 0x0003ffff, /* src_mask */
1471 0x0003ffff, /* dst_mask */
1472 FALSE), /* pcrel_offset */
1474 HOWTO (R_NDS32_SDA19S0_RELA, /* type */
1476 2, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_signed, /* complain_on_overflow */
1481 bfd_elf_generic_reloc, /* special_function */
1482 "R_NDS32_SDA19S0_RELA",/* name */
1483 FALSE, /* partial_inplace */
1484 0x0007ffff, /* src_mask */
1485 0x0007ffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1487 HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */
1489 0, /* size (0 = byte, 1 = short, 2 = long) */
1491 FALSE, /* pc_relative */
1493 complain_overflow_dont,/* complain_on_overflow */
1494 nds32_elf_ignore_reloc,/* special_function */
1495 "R_NDS32_DWARF2_OP1_RELA", /* name */
1496 FALSE, /* partial_inplace */
1497 0xff, /* src_mask */
1498 0xff, /* dst_mask */
1499 FALSE), /* pcrel_offset */
1500 HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE, /* pc_relative */
1506 complain_overflow_dont,/* complain_on_overflow */
1507 nds32_elf_ignore_reloc,/* special_function */
1508 "R_NDS32_DWARF2_OP2_RELA", /* name */
1509 FALSE, /* partial_inplace */
1510 0xffff, /* src_mask */
1511 0xffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1513 HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 FALSE, /* pc_relative */
1519 complain_overflow_dont,/* complain_on_overflow */
1520 nds32_elf_ignore_reloc,/* special_function */
1521 "R_NDS32_DWARF2_LEB_RELA", /* name */
1522 FALSE, /* partial_inplace */
1523 0xffffffff, /* src_mask */
1524 0xffffffff, /* dst_mask */
1525 FALSE), /* pcrel_offset */
1526 HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */
1528 1, /* size (0 = byte, 1 = short, 2 = long) */
1530 FALSE, /* pc_relative */
1532 complain_overflow_dont,/* complain_on_overflow */
1533 nds32_elf_ignore_reloc,/* special_function */
1534 "R_NDS32_UPDATE_TA_RELA", /* name */
1535 FALSE, /* partial_inplace */
1536 0xffff, /* src_mask */
1537 0xffff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
1540 entry for the symbol. */
1541 HOWTO (R_NDS32_9_PLTREL, /* type */
1543 1, /* size (0 = byte, 1 = short, 2 = long) */
1545 TRUE, /* pc_relative */
1547 complain_overflow_signed, /* complain_on_overflow */
1548 bfd_elf_generic_reloc, /* special_function */
1549 "R_NDS32_9_PLTREL", /* name */
1550 FALSE, /* partial_inplace */
1551 0xff, /* src_mask */
1552 0xff, /* dst_mask */
1553 TRUE), /* pcrel_offset */
1554 /* Low 20 bits of PLT symbol offset relative to GOT (GP). */
1555 HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE, /* pc_relative */
1561 complain_overflow_dont,/* complain_on_overflow */
1562 bfd_elf_generic_reloc, /* special_function */
1563 "R_NDS32_PLT_GOTREL_LO20", /* name */
1564 FALSE, /* partial_inplace */
1565 0x000fffff, /* src_mask */
1566 0x000fffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568 /* low 15 bits of PLT symbol offset relative to GOT (GP) */
1569 HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE, /* pc_relative */
1575 complain_overflow_dont,/* complain_on_overflow */
1576 bfd_elf_generic_reloc, /* special_function */
1577 "R_NDS32_PLT_GOTREL_LO15", /* name */
1578 FALSE, /* partial_inplace */
1579 0x00007fff, /* src_mask */
1580 0x00007fff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1582 /* Low 19 bits of PLT symbol offset relative to GOT (GP). */
1583 HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */
1585 2, /* size (0 = byte, 1 = short, 2 = long) */
1587 FALSE, /* pc_relative */
1589 complain_overflow_dont,/* complain_on_overflow */
1590 bfd_elf_generic_reloc, /* special_function */
1591 "R_NDS32_PLT_GOTREL_LO19", /* name */
1592 FALSE, /* partial_inplace */
1593 0x0007ffff, /* src_mask */
1594 0x0007ffff, /* dst_mask */
1595 FALSE), /* pcrel_offset */
1596 HOWTO (R_NDS32_GOT_LO15, /* type */
1598 2, /* size (0 = byte, 1 = short, 2 = long) */
1600 FALSE, /* pc_relative */
1602 complain_overflow_dont,/* complain_on_overflow */
1603 bfd_elf_generic_reloc, /* special_function */
1604 "R_NDS32_GOT_LO15", /* name */
1605 FALSE, /* partial_inplace */
1606 0x00007fff, /* src_mask */
1607 0x00007fff, /* dst_mask */
1608 FALSE), /* pcrel_offset */
1609 HOWTO (R_NDS32_GOT_LO19, /* type */
1611 2, /* size (0 = byte, 1 = short, 2 = long) */
1613 FALSE, /* pc_relative */
1615 complain_overflow_dont,/* complain_on_overflow */
1616 bfd_elf_generic_reloc, /* special_function */
1617 "R_NDS32_GOT_LO19", /* name */
1618 FALSE, /* partial_inplace */
1619 0x0007ffff, /* src_mask */
1620 0x0007ffff, /* dst_mask */
1621 FALSE), /* pcrel_offset */
1622 HOWTO (R_NDS32_GOTOFF_LO15, /* type */
1624 2, /* size (0 = byte, 1 = short, 2 = long) */
1626 FALSE, /* pc_relative */
1628 complain_overflow_dont,/* complain_on_overflow */
1629 bfd_elf_generic_reloc, /* special_function */
1630 "R_NDS32_GOTOFF_LO15", /* name */
1631 FALSE, /* partial_inplace */
1632 0x00007fff, /* src_mask */
1633 0x00007fff, /* dst_mask */
1634 FALSE), /* pcrel_offset */
1635 HOWTO (R_NDS32_GOTOFF_LO19, /* type */
1637 2, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE, /* pc_relative */
1641 complain_overflow_dont,/* complain_on_overflow */
1642 bfd_elf_generic_reloc, /* special_function */
1643 "R_NDS32_GOTOFF_LO19", /* name */
1644 FALSE, /* partial_inplace */
1645 0x0007ffff, /* src_mask */
1646 0x0007ffff, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1648 /* GOT 15 bits offset. */
1649 HOWTO (R_NDS32_GOT15S2_RELA, /* type */
1651 2, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE, /* pc_relative */
1655 complain_overflow_signed, /* complain_on_overflow */
1656 bfd_elf_generic_reloc, /* special_function */
1657 "R_NDS32_GOT15S2_RELA",/* name */
1658 FALSE, /* partial_inplace */
1659 0x00007fff, /* src_mask */
1660 0x00007fff, /* dst_mask */
1661 FALSE), /* pcrel_offset */
1662 /* GOT 17 bits offset. */
1663 HOWTO (R_NDS32_GOT17S2_RELA, /* type */
1665 2, /* size (0 = byte, 1 = short, 2 = long) */
1667 FALSE, /* pc_relative */
1669 complain_overflow_signed, /* complain_on_overflow */
1670 bfd_elf_generic_reloc, /* special_function */
1671 "R_NDS32_GOT17S2_RELA",/* name */
1672 FALSE, /* partial_inplace */
1673 0x0001ffff, /* src_mask */
1674 0x0001ffff, /* dst_mask */
1675 FALSE), /* pcrel_offset */
1676 /* A 5 bit address. */
1677 HOWTO (R_NDS32_5_RELA, /* type */
1679 1, /* size (0 = byte, 1 = short, 2 = long) */
1681 FALSE, /* pc_relative */
1683 complain_overflow_signed, /* complain_on_overflow */
1684 bfd_elf_generic_reloc, /* special_function */
1685 "R_NDS32_5_RELA", /* name */
1686 FALSE, /* partial_inplace */
1687 0x1f, /* src_mask */
1688 0x1f, /* dst_mask */
1689 FALSE), /* pcrel_offset */
1690 HOWTO (R_NDS32_10_UPCREL_RELA,/* type */
1692 1, /* size (0 = byte, 1 = short, 2 = long) */
1694 TRUE, /* pc_relative */
1696 complain_overflow_unsigned, /* complain_on_overflow */
1697 bfd_elf_generic_reloc, /* special_function */
1698 "R_NDS32_10_UPCREL_RELA", /* name */
1699 FALSE, /* partial_inplace */
1700 0x1ff, /* src_mask */
1701 0x1ff, /* dst_mask */
1702 TRUE), /* pcrel_offset */
1703 HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 FALSE, /* pc_relative */
1709 complain_overflow_unsigned, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_NDS32_SDA_FP7U2_RELA", /* name */
1712 FALSE, /* partial_inplace */
1713 0x0000007f, /* src_mask */
1714 0x0000007f, /* dst_mask */
1715 FALSE), /* pcrel_offset */
1716 HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */
1718 2, /* size (0 = byte, 1 = short, 2 = long) */
1720 TRUE, /* pc_relative */
1722 complain_overflow_signed, /* complain_on_overflow */
1723 bfd_elf_generic_reloc, /* special_function */
1724 "R_NDS32_WORD_9_PCREL_RELA", /* name */
1725 FALSE, /* partial_inplace */
1726 0xff, /* src_mask */
1727 0xff, /* dst_mask */
1728 TRUE), /* pcrel_offset */
1729 HOWTO (R_NDS32_25_ABS_RELA, /* type */
1731 2, /* size (0 = byte, 1 = short, 2 = long) */
1733 FALSE, /* pc_relative */
1735 complain_overflow_dont,/* complain_on_overflow */
1736 bfd_elf_generic_reloc, /* special_function */
1737 "R_NDS32_25_ABS_RELA", /* name */
1738 FALSE, /* partial_inplace */
1739 0xffffff, /* src_mask */
1740 0xffffff, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1743 /* A relative 17 bit relocation for ifc, right shifted by 1. */
1744 HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */
1746 2, /* size (0 = byte, 1 = short, 2 = long) */
1748 TRUE, /* pc_relative */
1750 complain_overflow_signed, /* complain_on_overflow */
1751 bfd_elf_generic_reloc, /* special_function */
1752 "R_NDS32_17IFC_PCREL_RELA", /* name */
1753 FALSE, /* partial_inplace */
1754 0xffff, /* src_mask */
1755 0xffff, /* dst_mask */
1756 TRUE), /* pcrel_offset */
1758 /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */
1759 HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 TRUE, /* pc_relative */
1765 complain_overflow_unsigned, /* complain_on_overflow */
1766 bfd_elf_generic_reloc, /* special_function */
1767 "R_NDS32_10IFCU_PCREL_RELA", /* name */
1768 FALSE, /* partial_inplace */
1769 0x1ff, /* src_mask */
1770 0x1ff, /* dst_mask */
1771 TRUE), /* pcrel_offset */
1773 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1774 HOWTO (R_NDS32_TLS_LE_HI20, /* type */
1775 12, /* rightshift */
1776 2, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE, /* pc_relative */
1780 complain_overflow_dont, /* complain_on_overflow */
1781 bfd_elf_generic_reloc, /* special_function */
1782 "R_NDS32_TLS_LE_HI20", /* name */
1783 FALSE, /* partial_inplace */
1784 0x000fffff, /* src_mask */
1785 0x000fffff, /* dst_mask */
1786 FALSE), /* pcrel_offset */
1787 HOWTO (R_NDS32_TLS_LE_LO12, /* type */
1789 2, /* size (0 = byte, 1 = short, 2 = long) */
1791 FALSE, /* pc_relative */
1793 complain_overflow_dont, /* complain_on_overflow */
1794 bfd_elf_generic_reloc, /* special_function */
1795 "R_NDS32_TLS_LE_LO12", /* name */
1796 FALSE, /* partial_inplace */
1797 0x00000fff, /* src_mask */
1798 0x00000fff, /* dst_mask */
1799 FALSE), /* pcrel_offset */
1801 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1802 HOWTO (R_NDS32_TLS_IE_HI20, /* type */
1803 12, /* rightshift */
1804 2, /* size (0 = byte, 1 = short, 2 = long) */
1806 FALSE, /* pc_relative */
1808 complain_overflow_dont, /* complain_on_overflow */
1809 bfd_elf_generic_reloc, /* special_function */
1810 "R_NDS32_TLS_IE_HI20", /* name */
1811 FALSE, /* partial_inplace */
1812 0x000fffff, /* src_mask */
1813 0x000fffff, /* dst_mask */
1814 FALSE), /* pcrel_offset */
1815 HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */
1817 2, /* size (0 = byte, 1 = short, 2 = long) */
1819 FALSE, /* pc_relative */
1821 complain_overflow_dont, /* complain_on_overflow */
1822 bfd_elf_generic_reloc, /* special_function */
1823 "R_NDS32_TLS_IE_LO12S2", /* name */
1824 FALSE, /* partial_inplace */
1825 0x000003ff, /* src_mask */
1826 0x000003ff, /* dst_mask */
1827 FALSE), /* pcrel_offset */
1828 /* Mark a TLS IE entry in GOT. */
1829 HOWTO (R_NDS32_TLS_TPOFF, /* type */
1831 2, /* size (0 = byte, 1 = short, 2 = long) */
1833 FALSE, /* pc_relative */
1835 complain_overflow_bitfield, /* complain_on_overflow */
1836 bfd_elf_generic_reloc, /* special_function */
1837 "R_NDS32_TLS_TPOFF", /* name */
1838 FALSE, /* partial_inplace */
1839 0xffffffff, /* src_mask */
1840 0xffffffff, /* dst_mask */
1841 FALSE), /* pcrel_offset */
1842 /* A 20 bit address. */
1843 HOWTO (R_NDS32_TLS_LE_20, /* type */
1845 2, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 bfd_elf_generic_reloc, /* special_function */
1851 "R_NDS32_TLS_LE_20", /* name */
1852 FALSE, /* partial_inplace */
1853 0xfffff, /* src_mask */
1854 0xfffff, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1856 HOWTO (R_NDS32_TLS_LE_15S0, /* type */
1858 2, /* size (0 = byte, 1 = short, 2 = long) */
1860 FALSE, /* pc_relative */
1862 complain_overflow_signed, /* complain_on_overflow */
1863 bfd_elf_generic_reloc, /* special_function */
1864 "R_NDS32_TLS_LE_15S0", /* name */
1865 FALSE, /* partial_inplace */
1866 0x7fff, /* src_mask */
1867 0x7fff, /* dst_mask */
1868 FALSE), /* pcrel_offset */
1869 HOWTO (R_NDS32_TLS_LE_15S1, /* type */
1871 2, /* size (0 = byte, 1 = short, 2 = long) */
1873 FALSE, /* pc_relative */
1875 complain_overflow_signed, /* complain_on_overflow */
1876 bfd_elf_generic_reloc, /* special_function */
1877 "R_NDS32_TLS_LE_15S1", /* name */
1878 FALSE, /* partial_inplace */
1879 0x7fff, /* src_mask */
1880 0x7fff, /* dst_mask */
1881 FALSE), /* pcrel_offset */
1882 HOWTO (R_NDS32_TLS_LE_15S2, /* type */
1884 2, /* size (0 = byte, 1 = short, 2 = long) */
1886 FALSE, /* pc_relative */
1888 complain_overflow_signed, /* complain_on_overflow */
1889 bfd_elf_generic_reloc, /* special_function */
1890 "R_NDS32_TLS_LE_15S2", /* name */
1891 FALSE, /* partial_inplace */
1892 0x7fff, /* src_mask */
1893 0x7fff, /* dst_mask */
1894 FALSE), /* pcrel_offset */
1896 /* Relax hint for unconditional call sequence */
1897 HOWTO (R_NDS32_LONGCALL4, /* type */
1899 2, /* size (0 = byte, 1 = short, 2 = long) */
1901 FALSE, /* pc_relative */
1903 complain_overflow_dont, /* complain_on_overflow */
1904 nds32_elf_ignore_reloc, /* special_function */
1905 "R_NDS32_LONGCALL4", /* name */
1906 FALSE, /* partial_inplace */
1907 0xffffffff, /* src_mask */
1908 0xffffffff, /* dst_mask */
1909 FALSE), /* pcrel_offset */
1911 /* Relax hint for conditional call sequence. */
1912 HOWTO (R_NDS32_LONGCALL5, /* type */
1914 2, /* size (0 = byte, 1 = short, 2 = long) */
1916 FALSE, /* pc_relative */
1918 complain_overflow_dont, /* complain_on_overflow */
1919 nds32_elf_ignore_reloc, /* special_function */
1920 "R_NDS32_LONGCALL5", /* name */
1921 FALSE, /* partial_inplace */
1922 0xffffffff, /* src_mask */
1923 0xffffffff, /* dst_mask */
1924 FALSE), /* pcrel_offset */
1926 /* Relax hint for conditional call sequence. */
1927 HOWTO (R_NDS32_LONGCALL6, /* type */
1929 2, /* size (0 = byte, 1 = short, 2 = long) */
1931 FALSE, /* pc_relative */
1933 complain_overflow_dont, /* complain_on_overflow */
1934 nds32_elf_ignore_reloc, /* special_function */
1935 "R_NDS32_LONGCALL6", /* name */
1936 FALSE, /* partial_inplace */
1937 0xffffffff, /* src_mask */
1938 0xffffffff, /* dst_mask */
1939 FALSE), /* pcrel_offset */
1941 /* Relax hint for unconditional branch sequence. */
1942 HOWTO (R_NDS32_LONGJUMP4, /* type */
1944 2, /* size (0 = byte, 1 = short, 2 = long) */
1946 FALSE, /* pc_relative */
1948 complain_overflow_dont, /* complain_on_overflow */
1949 nds32_elf_ignore_reloc, /* special_function */
1950 "R_NDS32_LONGJUMP4", /* name */
1951 FALSE, /* partial_inplace */
1952 0xffffffff, /* src_mask */
1953 0xffffffff, /* dst_mask */
1954 FALSE), /* pcrel_offset */
1956 /* Relax hint for conditional branch sequence. */
1957 HOWTO (R_NDS32_LONGJUMP5, /* type */
1959 2, /* size (0 = byte, 1 = short, 2 = long) */
1961 FALSE, /* pc_relative */
1963 complain_overflow_dont, /* complain_on_overflow */
1964 nds32_elf_ignore_reloc, /* special_function */
1965 "R_NDS32_LONGJUMP5", /* name */
1966 FALSE, /* partial_inplace */
1967 0xffffffff, /* src_mask */
1968 0xffffffff, /* dst_mask */
1969 FALSE), /* pcrel_offset */
1971 /* Relax hint for conditional branch sequence. */
1972 HOWTO (R_NDS32_LONGJUMP6, /* type */
1974 2, /* size (0 = byte, 1 = short, 2 = long) */
1976 FALSE, /* pc_relative */
1978 complain_overflow_dont, /* complain_on_overflow */
1979 nds32_elf_ignore_reloc, /* special_function */
1980 "R_NDS32_LONGJUMP6", /* name */
1981 FALSE, /* partial_inplace */
1982 0xffffffff, /* src_mask */
1983 0xffffffff, /* dst_mask */
1984 FALSE), /* pcrel_offset */
1986 /* Relax hint for conditional branch sequence. */
1987 HOWTO (R_NDS32_LONGJUMP7, /* type */
1989 2, /* size (0 = byte, 1 = short, 2 = long) */
1991 FALSE, /* pc_relative */
1993 complain_overflow_dont, /* complain_on_overflow */
1994 nds32_elf_ignore_reloc, /* special_function */
1995 "R_NDS32_LONGJUMP7", /* name */
1996 FALSE, /* partial_inplace */
1997 0xffffffff, /* src_mask */
1998 0xffffffff, /* dst_mask */
1999 FALSE), /* pcrel_offset */
2002 /* Relocations used for relaxation. */
2003 static reloc_howto_type nds32_elf_relax_howto_table[] =
2005 HOWTO (R_NDS32_RELAX_ENTRY, /* type */
2007 2, /* size (0 = byte, 1 = short, 2 = long) */
2009 FALSE, /* pc_relative */
2011 complain_overflow_dont,/* complain_on_overflow */
2012 nds32_elf_ignore_reloc,/* special_function */
2013 "R_NDS32_RELAX_ENTRY", /* name */
2014 FALSE, /* partial_inplace */
2015 0xffffffff, /* src_mask */
2016 0xffffffff, /* dst_mask */
2017 FALSE), /* pcrel_offset */
2018 HOWTO (R_NDS32_GOT_SUFF, /* type */
2020 2, /* size (0 = byte, 1 = short, 2 = long) */
2022 FALSE, /* pc_relative */
2024 complain_overflow_dont,/* complain_on_overflow */
2025 nds32_elf_ignore_reloc,/* special_function */
2026 "R_NDS32_GOT_SUFF", /* name */
2027 FALSE, /* partial_inplace */
2028 0xffffffff, /* src_mask */
2029 0xffffffff, /* dst_mask */
2030 FALSE), /* pcrel_offset */
2031 HOWTO (R_NDS32_GOTOFF_SUFF, /* type */
2033 2, /* size (0 = byte, 1 = short, 2 = long) */
2035 FALSE, /* pc_relative */
2037 complain_overflow_bitfield, /* complain_on_overflow */
2038 nds32_elf_ignore_reloc,/* special_function */
2039 "R_NDS32_GOTOFF_SUFF", /* name */
2040 FALSE, /* partial_inplace */
2041 0xffffffff, /* src_mask */
2042 0xffffffff, /* dst_mask */
2043 FALSE), /* pcrel_offset */
2044 HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */
2046 2, /* size (0 = byte, 1 = short, 2 = long) */
2048 FALSE, /* pc_relative */
2050 complain_overflow_dont,/* complain_on_overflow */
2051 nds32_elf_ignore_reloc,/* special_function */
2052 "R_NDS32_PLT_GOT_SUFF",/* name */
2053 FALSE, /* partial_inplace */
2054 0xffffffff, /* src_mask */
2055 0xffffffff, /* dst_mask */
2056 FALSE), /* pcrel_offset */
2057 HOWTO (R_NDS32_MULCALL_SUFF, /* type */
2059 2, /* size (0 = byte, 1 = short, 2 = long) */
2061 FALSE, /* pc_relative */
2063 complain_overflow_dont,/* complain_on_overflow */
2064 nds32_elf_ignore_reloc,/* special_function */
2065 "R_NDS32_MULCALL_SUFF",/* name */
2066 FALSE, /* partial_inplace */
2067 0xffffffff, /* src_mask */
2068 0xffffffff, /* dst_mask */
2069 FALSE), /* pcrel_offset */
2070 HOWTO (R_NDS32_PTR, /* type */
2072 2, /* size (0 = byte, 1 = short, 2 = long) */
2074 FALSE, /* pc_relative */
2076 complain_overflow_dont,/* complain_on_overflow */
2077 nds32_elf_ignore_reloc,/* special_function */
2078 "R_NDS32_PTR", /* name */
2079 FALSE, /* partial_inplace */
2080 0xffffffff, /* src_mask */
2081 0xffffffff, /* dst_mask */
2082 FALSE), /* pcrel_offset */
2083 HOWTO (R_NDS32_PTR_COUNT, /* type */
2085 2, /* size (0 = byte, 1 = short, 2 = long) */
2087 FALSE, /* pc_relative */
2089 complain_overflow_dont,/* complain_on_overflow */
2090 nds32_elf_ignore_reloc,/* special_function */
2091 "R_NDS32_PTR_COUNT", /* name */
2092 FALSE, /* partial_inplace */
2093 0xffffffff, /* src_mask */
2094 0xffffffff, /* dst_mask */
2095 FALSE), /* pcrel_offset */
2096 HOWTO (R_NDS32_PTR_RESOLVED, /* type */
2098 2, /* size (0 = byte, 1 = short, 2 = long) */
2100 FALSE, /* pc_relative */
2102 complain_overflow_dont,/* complain_on_overflow */
2103 nds32_elf_ignore_reloc,/* special_function */
2104 "R_NDS32_PTR_RESOLVED",/* name */
2105 FALSE, /* partial_inplace */
2106 0xffffffff, /* src_mask */
2107 0xffffffff, /* dst_mask */
2108 FALSE), /* pcrel_offset */
2109 HOWTO (R_NDS32_PLTBLOCK, /* type */
2111 2, /* size (0 = byte, 1 = short, 2 = long) */
2113 FALSE, /* pc_relative */
2115 complain_overflow_dont,/* complain_on_overflow */
2116 nds32_elf_ignore_reloc,/* special_function */
2117 "R_NDS32_PLTBLOCK", /* name */
2118 FALSE, /* partial_inplace */
2119 0xffffffff, /* src_mask */
2120 0xffffffff, /* dst_mask */
2121 FALSE), /* pcrel_offset */
2122 HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */
2124 2, /* size (0 = byte, 1 = short, 2 = long) */
2126 FALSE, /* pc_relative */
2128 complain_overflow_dont,/* complain_on_overflow */
2129 nds32_elf_ignore_reloc,/* special_function */
2130 "R_NDS32_RELAX_REGION_BEGIN", /* name */
2131 FALSE, /* partial_inplace */
2132 0xffffffff, /* src_mask */
2133 0xffffffff, /* dst_mask */
2134 FALSE), /* pcrel_offset */
2135 HOWTO (R_NDS32_RELAX_REGION_END, /* type */
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2139 FALSE, /* pc_relative */
2141 complain_overflow_dont,/* complain_on_overflow */
2142 nds32_elf_ignore_reloc,/* special_function */
2143 "R_NDS32_RELAX_REGION_END", /* name */
2144 FALSE, /* partial_inplace */
2145 0xffffffff, /* src_mask */
2146 0xffffffff, /* dst_mask */
2147 FALSE), /* pcrel_offset */
2148 HOWTO (R_NDS32_MINUEND, /* type */
2150 2, /* size (0 = byte, 1 = short, 2 = long) */
2152 FALSE, /* pc_relative */
2154 complain_overflow_dont,/* complain_on_overflow */
2155 nds32_elf_ignore_reloc,/* special_function */
2156 "R_NDS32_MINUEND", /* name */
2157 FALSE, /* partial_inplace */
2158 0xffffffff, /* src_mask */
2159 0xffffffff, /* dst_mask */
2160 FALSE), /* pcrel_offset */
2161 HOWTO (R_NDS32_SUBTRAHEND, /* type */
2163 2, /* size (0 = byte, 1 = short, 2 = long) */
2165 FALSE, /* pc_relative */
2167 complain_overflow_dont,/* complain_on_overflow */
2168 nds32_elf_ignore_reloc,/* special_function */
2169 "R_NDS32_SUBTRAHEND", /* name */
2170 FALSE, /* partial_inplace */
2171 0xffffffff, /* src_mask */
2172 0xffffffff, /* dst_mask */
2173 FALSE), /* pcrel_offset */
2174 HOWTO (R_NDS32_DIFF8, /* type */
2176 0, /* size (0 = byte, 1 = short, 2 = long) */
2178 FALSE, /* pc_relative */
2180 complain_overflow_dont,/* complain_on_overflow */
2181 nds32_elf_ignore_reloc,/* special_function */
2182 "R_NDS32_DIFF8", /* name */
2183 FALSE, /* partial_inplace */
2184 0x000000ff, /* src_mask */
2185 0x000000ff, /* dst_mask */
2186 FALSE), /* pcrel_offset */
2187 HOWTO (R_NDS32_DIFF16, /* type */
2189 1, /* size (0 = byte, 1 = short, 2 = long) */
2191 FALSE, /* pc_relative */
2193 complain_overflow_dont,/* complain_on_overflow */
2194 nds32_elf_ignore_reloc,/* special_function */
2195 "R_NDS32_DIFF16", /* name */
2196 FALSE, /* partial_inplace */
2197 0x0000ffff, /* src_mask */
2198 0x0000ffff, /* dst_mask */
2199 FALSE), /* pcrel_offset */
2200 HOWTO (R_NDS32_DIFF32, /* type */
2202 2, /* size (0 = byte, 1 = short, 2 = long) */
2204 FALSE, /* pc_relative */
2206 complain_overflow_dont,/* complain_on_overflow */
2207 nds32_elf_ignore_reloc,/* special_function */
2208 "R_NDS32_DIFF32", /* name */
2209 FALSE, /* partial_inplace */
2210 0xffffffff, /* src_mask */
2211 0xffffffff, /* dst_mask */
2212 FALSE), /* pcrel_offset */
2213 HOWTO (R_NDS32_DIFF_ULEB128, /* type */
2215 0, /* size (0 = byte, 1 = short, 2 = long) */
2217 FALSE, /* pc_relative */
2219 complain_overflow_dont,/* complain_on_overflow */
2220 nds32_elf_ignore_reloc,/* special_function */
2221 "R_NDS32_DIFF_ULEB128",/* name */
2222 FALSE, /* partial_inplace */
2223 0xffffffff, /* src_mask */
2224 0xffffffff, /* dst_mask */
2225 FALSE), /* pcrel_offset */
2226 HOWTO (R_NDS32_DATA, /* type */
2228 2, /* size (0 = byte, 1 = short, 2 = long) */
2230 FALSE, /* pc_relative */
2232 complain_overflow_dont,/* complain_on_overflow */
2233 nds32_elf_ignore_reloc,/* special_function */
2234 "R_NDS32_DATA", /* name */
2235 FALSE, /* partial_inplace */
2236 0xffffffff, /* src_mask */
2237 0xffffffff, /* dst_mask */
2238 FALSE), /* pcrel_offset */
2239 HOWTO (R_NDS32_TRAN, /* type */
2241 2, /* size (0 = byte, 1 = short, 2 = long) */
2243 FALSE, /* pc_relative */
2245 complain_overflow_dont,/* complain_on_overflow */
2246 nds32_elf_ignore_reloc,/* special_function */
2247 "R_NDS32_TRAN", /* name */
2248 FALSE, /* partial_inplace */
2249 0xffffffff, /* src_mask */
2250 0xffffffff, /* dst_mask */
2251 FALSE), /* pcrel_offset */
2252 HOWTO (R_NDS32_TLS_LE_ADD, /* type */
2254 2, /* size (0 = byte, 1 = short, 2 = long) */
2256 FALSE, /* pc_relative */
2258 complain_overflow_dont, /* complain_on_overflow */
2259 nds32_elf_ignore_reloc, /* special_function */
2260 "R_NDS32_TLS_LE_ADD", /* name */
2261 FALSE, /* partial_inplace */
2262 0xffffffff, /* src_mask */
2263 0xffffffff, /* dst_mask */
2264 FALSE), /* pcrel_offset */
2265 HOWTO (R_NDS32_TLS_LE_LS, /* type */
2267 2, /* size (0 = byte, 1 = short, 2 = long) */
2269 FALSE, /* pc_relative */
2271 complain_overflow_dont, /* complain_on_overflow */
2272 nds32_elf_ignore_reloc, /* special_function */
2273 "R_NDS32_TLS_LE_LS", /* name */
2274 FALSE, /* partial_inplace */
2275 0xffffffff, /* src_mask */
2276 0xffffffff, /* dst_mask */
2277 FALSE), /* pcrel_offset */
2278 HOWTO (R_NDS32_EMPTY, /* type */
2280 2, /* size (0 = byte, 1 = short, 2 = long) */
2282 FALSE, /* pc_relative */
2284 complain_overflow_dont, /* complain_on_overflow */
2285 nds32_elf_ignore_reloc, /* special_function */
2286 "R_NDS32_EMPTY", /* name */
2287 FALSE, /* partial_inplace */
2288 0xffffffff, /* src_mask */
2289 0xffffffff, /* dst_mask */
2290 FALSE), /* pcrel_offset */
2294 /* nds32_insertion_sort sorts an array with nmemb elements of size size.
2295 This prototype is the same as qsort (). */
2298 nds32_insertion_sort (void *base, size_t nmemb, size_t size,
2299 int (*compar) (const void *lhs, const void *rhs))
2301 char *ptr = (char *) base;
2303 char *tmp = xmalloc (size);
2305 /* If i is less than j, i is inserted before j.
2307 |---- j ----- i --------------|
2312 for (i = 1; i < (int) nmemb; i++)
2314 for (j = (i - 1); j >= 0; j--)
2315 if (compar (ptr + i * size, ptr + j * size) >= 0)
2321 continue; /* i is in order. */
2323 memcpy (tmp, ptr + i * size, size);
2324 memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size);
2325 memcpy (ptr + j * size, tmp, size);
2330 /* Sort relocation by r_offset.
2332 We didn't use qsort () in stdlib, because quick-sort is not a stable sorting
2333 algorithm. Relocations at the same r_offset must keep their order.
2334 For example, RELAX_ENTRY must be the very first relocation entry.
2336 Currently, this function implements insertion-sort.
2338 FIXME: If we already sort them in assembler, why bother sort them
2342 compar_reloc (const void *lhs, const void *rhs)
2344 const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs;
2345 const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs;
2347 if (l->r_offset > r->r_offset)
2349 else if (l->r_offset == r->r_offset)
2355 /* Functions listed below are only used for old relocs.
2356 * nds32_elf_9_pcrel_reloc
2357 * nds32_elf_do_9_pcrel_reloc
2358 * nds32_elf_hi20_reloc
2359 * nds32_elf_relocate_hi20
2360 * nds32_elf_lo12_reloc
2361 * nds32_elf_sda15_reloc
2362 * nds32_elf_generic_reloc
2365 /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */
2367 static bfd_reloc_status_type
2368 nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2369 void *data, asection *input_section, bfd *output_bfd,
2370 char **error_message ATTRIBUTE_UNUSED)
2372 /* This part is from bfd_elf_generic_reloc. */
2373 if (output_bfd != (bfd *) NULL
2374 && (symbol->flags & BSF_SECTION_SYM) == 0
2375 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2377 reloc_entry->address += input_section->output_offset;
2378 return bfd_reloc_ok;
2381 if (output_bfd != NULL)
2383 /* FIXME: See bfd_perform_relocation. Is this right? */
2384 return bfd_reloc_continue;
2387 return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto,
2389 data, reloc_entry->address,
2392 + symbol->section->output_section->vma
2393 + symbol->section->output_offset),
2394 reloc_entry->addend);
2397 /* Utility to actually perform an R_NDS32_9_PCREL reloc. */
2398 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
2400 static bfd_reloc_status_type
2401 nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto,
2402 asection *input_section, bfd_byte *data,
2404 asection *symbol_section ATTRIBUTE_UNUSED,
2405 bfd_vma symbol_value, bfd_vma addend)
2407 bfd_signed_vma relocation;
2409 bfd_reloc_status_type status;
2411 /* Sanity check the address (offset in section). */
2412 if (offset > bfd_get_section_limit (abfd, input_section))
2413 return bfd_reloc_outofrange;
2415 relocation = symbol_value + addend;
2416 /* Make it pc relative. */
2417 relocation -= (input_section->output_section->vma
2418 + input_section->output_offset);
2419 /* These jumps mask off the lower two bits of the current address
2420 before doing pcrel calculations. */
2421 relocation -= (offset & -(bfd_vma) 2);
2423 if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1)
2424 status = bfd_reloc_overflow;
2426 status = bfd_reloc_ok;
2428 x = bfd_getb16 (data + offset);
2430 relocation >>= howto->rightshift;
2431 relocation <<= howto->bitpos;
2432 x = (x & ~howto->dst_mask)
2433 | (((x & howto->src_mask) + relocation) & howto->dst_mask);
2435 bfd_putb16 ((bfd_vma) x, data + offset);
2440 /* Handle the R_NDS32_HI20_[SU]LO relocs.
2441 HI20_SLO is for the add3 and load/store with displacement instructions.
2442 HI20 is for the or3 instruction.
2443 For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to
2444 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
2445 we must add one to the high 16 bytes (which will get subtracted off when
2446 the low 16 bits are added).
2447 These relocs have to be done in combination with an R_NDS32_LO12 reloc
2448 because there is a carry from the LO12 to the HI20. Here we just save
2449 the information we need; we do the actual relocation when we see the LO12.
2450 This code is copied from the elf32-mips.c. We also support an arbitrary
2451 number of HI20 relocs to be associated with a single LO12 reloc. The
2452 assembler sorts the relocs to ensure each HI20 immediately precedes its
2453 LO12. However if there are multiple copies, the assembler may not find
2454 the real LO12 so it picks the first one it finds. */
2458 struct nds32_hi20 *next;
2463 static struct nds32_hi20 *nds32_hi20_list;
2465 static bfd_reloc_status_type
2466 nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2467 asymbol *symbol, void *data, asection *input_section,
2468 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2470 bfd_reloc_status_type ret;
2472 struct nds32_hi20 *n;
2474 /* This part is from bfd_elf_generic_reloc.
2475 If we're relocating, and this an external symbol, we don't want
2476 to change anything. */
2477 if (output_bfd != (bfd *) NULL
2478 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0)
2480 reloc_entry->address += input_section->output_offset;
2481 return bfd_reloc_ok;
2484 /* Sanity check the address (offset in section). */
2485 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2486 return bfd_reloc_outofrange;
2489 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2490 ret = bfd_reloc_undefined;
2492 if (bfd_is_com_section (symbol->section))
2495 relocation = symbol->value;
2497 relocation += symbol->section->output_section->vma;
2498 relocation += symbol->section->output_offset;
2499 relocation += reloc_entry->addend;
2501 /* Save the information, and let LO12 do the actual relocation. */
2502 n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n);
2504 return bfd_reloc_outofrange;
2506 n->addr = (bfd_byte *) data + reloc_entry->address;
2507 n->addend = relocation;
2508 n->next = nds32_hi20_list;
2509 nds32_hi20_list = n;
2511 if (output_bfd != (bfd *) NULL)
2512 reloc_entry->address += input_section->output_offset;
2517 /* Handle an NDS32 ELF HI20 reloc. */
2520 nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED,
2521 int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi,
2522 Elf_Internal_Rela *rello, bfd_byte *contents,
2528 insn = bfd_getb32 (contents + relhi->r_offset);
2530 addlo = bfd_getb32 (contents + rello->r_offset);
2533 addend += ((insn & 0xfffff) << 20) + addlo;
2535 insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff);
2536 bfd_putb32 (insn, contents + relhi->r_offset);
2539 /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit
2540 inplace relocation; this function exists in order to do the
2541 R_NDS32_HI20_[SU]LO relocation described above. */
2543 static bfd_reloc_status_type
2544 nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol,
2545 void *data, asection *input_section, bfd *output_bfd,
2546 char **error_message)
2548 /* This part is from bfd_elf_generic_reloc.
2549 If we're relocating, and this an external symbol, we don't want
2550 to change anything. */
2551 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2552 && reloc_entry->addend == 0)
2554 reloc_entry->address += input_section->output_offset;
2555 return bfd_reloc_ok;
2558 if (nds32_hi20_list != NULL)
2560 struct nds32_hi20 *l;
2562 l = nds32_hi20_list;
2567 unsigned long vallo;
2568 struct nds32_hi20 *next;
2570 /* Do the HI20 relocation. Note that we actually don't need
2571 to know anything about the LO12 itself, except where to
2572 find the low 12 bits of the addend needed by the LO12. */
2573 insn = bfd_getb32 (l->addr);
2574 vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address);
2576 switch (reloc_entry->howto->type)
2578 case R_NDS32_LO12S3:
2582 case R_NDS32_LO12S2:
2586 case R_NDS32_LO12S1:
2590 case R_NDS32_LO12S0:
2595 val = ((insn & 0xfffff) << 12) + vallo;
2598 insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff);
2599 bfd_putb32 ((bfd_vma) insn, l->addr);
2606 nds32_hi20_list = NULL;
2609 /* Now do the LO12 reloc in the usual way.
2610 ??? It would be nice to call bfd_elf_generic_reloc here,
2611 but we have partial_inplace set. bfd_elf_generic_reloc will
2612 pass the handling back to bfd_install_relocation which will install
2613 a section relative addend which is wrong. */
2614 return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
2615 input_section, output_bfd, error_message);
2618 /* Do generic partial_inplace relocation.
2619 This is a local replacement for bfd_elf_generic_reloc. */
2621 static bfd_reloc_status_type
2622 nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry,
2623 asymbol *symbol, void *data, asection *input_section,
2624 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2626 bfd_reloc_status_type ret;
2628 bfd_byte *inplace_address;
2630 /* This part is from bfd_elf_generic_reloc.
2631 If we're relocating, and this an external symbol, we don't want
2632 to change anything. */
2633 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2634 && reloc_entry->addend == 0)
2636 reloc_entry->address += input_section->output_offset;
2637 return bfd_reloc_ok;
2640 /* Now do the reloc in the usual way.
2641 ??? It would be nice to call bfd_elf_generic_reloc here,
2642 but we have partial_inplace set. bfd_elf_generic_reloc will
2643 pass the handling back to bfd_install_relocation which will install
2644 a section relative addend which is wrong. */
2646 /* Sanity check the address (offset in section). */
2647 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
2648 return bfd_reloc_outofrange;
2651 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2652 ret = bfd_reloc_undefined;
2654 if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
2657 relocation = symbol->value;
2659 /* Only do this for a final link. */
2660 if (output_bfd == (bfd *) NULL)
2662 relocation += symbol->section->output_section->vma;
2663 relocation += symbol->section->output_offset;
2666 relocation += reloc_entry->addend;
2667 switch (reloc_entry->howto->type)
2669 case R_NDS32_LO12S3:
2673 case R_NDS32_LO12S2:
2677 case R_NDS32_LO12S1:
2681 case R_NDS32_LO12S0:
2687 inplace_address = (bfd_byte *) data + reloc_entry->address;
2690 x = ((x & ~reloc_entry->howto->dst_mask) | \
2691 (((x & reloc_entry->howto->src_mask) + relocation) & \
2692 reloc_entry->howto->dst_mask))
2694 switch (reloc_entry->howto->size)
2698 short x = bfd_getb16 (inplace_address);
2701 bfd_putb16 ((bfd_vma) x, inplace_address);
2706 unsigned long x = bfd_getb32 (inplace_address);
2709 bfd_putb32 ((bfd_vma) x, inplace_address);
2716 if (output_bfd != (bfd *) NULL)
2717 reloc_entry->address += input_section->output_offset;
2722 /* Handle the R_NDS32_SDA15 reloc.
2723 This reloc is used to compute the address of objects in the small data area
2724 and to perform loads and stores from that area.
2725 The lower 15 bits are sign extended and added to the register specified
2726 in the instruction, which is assumed to point to _SDA_BASE_.
2728 Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on
2729 the access size, this must be taken care of. */
2731 static bfd_reloc_status_type
2732 nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2733 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
2734 asection *input_section, bfd *output_bfd,
2735 char **error_message ATTRIBUTE_UNUSED)
2737 /* This part is from bfd_elf_generic_reloc. */
2738 if (output_bfd != (bfd *) NULL
2739 && (symbol->flags & BSF_SECTION_SYM) == 0
2740 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2742 reloc_entry->address += input_section->output_offset;
2743 return bfd_reloc_ok;
2746 if (output_bfd != NULL)
2748 /* FIXME: See bfd_perform_relocation. Is this right? */
2749 return bfd_reloc_continue;
2752 /* FIXME: not sure what to do here yet. But then again, the linker
2753 may never call us. */
2757 /* nds32_elf_ignore_reloc is the special function for
2758 relocation types which don't need to be relocated
2759 like relaxation relocation types.
2760 This function simply return bfd_reloc_ok when it is
2763 static bfd_reloc_status_type
2764 nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2765 asymbol *symbol ATTRIBUTE_UNUSED,
2766 void *data ATTRIBUTE_UNUSED, asection *input_section,
2767 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2769 if (output_bfd != NULL)
2770 reloc_entry->address += input_section->output_offset;
2772 return bfd_reloc_ok;
2776 /* Map BFD reloc types to NDS32 ELF reloc types. */
2778 struct nds32_reloc_map_entry
2780 bfd_reloc_code_real_type bfd_reloc_val;
2781 unsigned char elf_reloc_val;
2784 static const struct nds32_reloc_map_entry nds32_reloc_map[] =
2786 {BFD_RELOC_NONE, R_NDS32_NONE},
2787 {BFD_RELOC_16, R_NDS32_16_RELA},
2788 {BFD_RELOC_32, R_NDS32_32_RELA},
2789 {BFD_RELOC_NDS32_20, R_NDS32_20_RELA},
2790 {BFD_RELOC_NDS32_5, R_NDS32_5_RELA},
2791 {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA},
2792 {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA},
2793 {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA},
2794 {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA},
2795 {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA},
2796 {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA},
2797 {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA},
2798 {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA},
2799 {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA},
2800 {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA},
2801 {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA},
2802 {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA},
2803 {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA},
2804 {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA},
2805 {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA},
2806 {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA},
2807 {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT},
2808 {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY},
2810 {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20},
2811 {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL},
2812 {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL},
2813 {BFD_RELOC_NDS32_COPY, R_NDS32_COPY},
2814 {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT},
2815 {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT},
2816 {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE},
2817 {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF},
2818 {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20},
2819 {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20},
2820 {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12},
2821 {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15},
2822 {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19},
2823 {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20},
2824 {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12},
2825 {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20},
2826 {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12},
2827 {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15},
2828 {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19},
2829 {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16},
2830 {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL},
2831 {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1},
2832 {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2},
2833 {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3},
2834 {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4},
2835 {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5},
2836 {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6},
2837 {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1},
2838 {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2},
2839 {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3},
2840 {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4},
2841 {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5},
2842 {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6},
2843 {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7},
2844 {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE},
2845 {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA},
2846 {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA},
2847 {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA},
2848 {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA},
2849 {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20},
2850 {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12},
2851 {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20},
2852 {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12},
2853 {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15},
2854 {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19},
2855 {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20},
2856 {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA},
2857 {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA},
2858 {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA},
2859 {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA},
2860 {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA},
2861 {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA},
2862 {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA},
2863 {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA},
2864 {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA},
2865 {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA},
2866 {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA},
2867 {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA},
2868 {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA},
2869 {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF},
2870 {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF},
2871 {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA},
2872 {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA},
2873 {BFD_RELOC_NDS32_PTR, R_NDS32_PTR},
2874 {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT},
2875 {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF},
2876 {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED},
2877 {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY},
2878 {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF},
2879 {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK},
2880 {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN},
2881 {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END},
2882 {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND},
2883 {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND},
2884 {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY},
2886 {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8},
2887 {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16},
2888 {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32},
2889 {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128},
2890 {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA},
2891 {BFD_RELOC_NDS32_DATA, R_NDS32_DATA},
2892 {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN},
2893 {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA},
2894 {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA},
2895 {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20},
2896 {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12},
2897 {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD},
2898 {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS},
2899 {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20},
2900 {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2},
2901 {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF},
2902 {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20},
2903 {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0},
2904 {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1},
2905 {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2},
2910 static reloc_howto_type *
2911 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2916 for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++)
2917 if (nds32_elf_howto_table[i].name != NULL
2918 && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0)
2919 return &nds32_elf_howto_table[i];
2921 for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++)
2922 if (nds32_elf_relax_howto_table[i].name != NULL
2923 && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0)
2924 return &nds32_elf_relax_howto_table[i];
2929 static reloc_howto_type *
2930 bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code)
2932 if (code < R_NDS32_RELAX_ENTRY)
2934 BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table));
2935 return &nds32_elf_howto_table[code];
2939 BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY)
2940 < ARRAY_SIZE (nds32_elf_relax_howto_table));
2941 return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY];
2945 static reloc_howto_type *
2946 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2947 bfd_reloc_code_real_type code)
2951 for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++)
2953 if (nds32_reloc_map[i].bfd_reloc_val == code)
2954 return bfd_elf32_bfd_reloc_type_table_lookup
2955 (nds32_reloc_map[i].elf_reloc_val);
2961 /* Set the howto pointer for an NDS32 ELF reloc. */
2964 nds32_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2965 Elf_Internal_Rela *dst)
2967 enum elf_nds32_reloc_type r_type;
2969 r_type = ELF32_R_TYPE (dst->r_info);
2970 if (r_type > R_NDS32_GNU_VTENTRY)
2972 _bfd_error_handler (_("%B: invalid NDS32 reloc number: %d"), abfd, r_type);
2975 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
2979 nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2980 Elf_Internal_Rela *dst)
2982 BFD_ASSERT ((ELF32_R_TYPE (dst->r_info) == R_NDS32_NONE)
2983 || ((ELF32_R_TYPE (dst->r_info) > R_NDS32_GNU_VTENTRY)
2984 && (ELF32_R_TYPE (dst->r_info) < R_NDS32_max)));
2985 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst->r_info));
2988 /* Support for core dump NOTE sections.
2989 Reference to include/linux/elfcore.h in Linux. */
2992 nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2997 switch (note->descsz)
3000 /* Linux/NDS32 32-bit, ABI1 */
3003 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3006 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
3014 /* Linux/NDS32 32-bit */
3017 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3020 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
3031 /* Make a ".reg" section. */
3032 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3033 size, note->descpos + offset);
3037 nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3039 switch (note->descsz)
3044 /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */
3045 elf_tdata (abfd)->core->program =
3046 _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3047 elf_tdata (abfd)->core->command =
3048 _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3054 /* Note that for some reason, a spurious space is tacked
3055 onto the end of the args in some (at least one anyway)
3056 implementations, so strip it off if it exists. */
3058 char *command = elf_tdata (abfd)->core->command;
3059 int n = strlen (command);
3061 if (0 < n && command[n - 1] == ' ')
3062 command[n - 1] = '\0';
3068 /* Hook called by the linker routine which adds symbols from an object
3069 file. We must handle the special NDS32 section numbers here.
3070 We also keep watching for whether we need to create the sdata special
3074 nds32_elf_add_symbol_hook (bfd *abfd,
3075 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3076 Elf_Internal_Sym *sym,
3077 const char **namep ATTRIBUTE_UNUSED,
3078 flagword *flagsp ATTRIBUTE_UNUSED,
3079 asection **secp, bfd_vma *valp)
3081 switch (sym->st_shndx)
3084 /* Common symbols less than the GP size are automatically
3085 treated as SHN_MIPS_SCOMMON symbols. */
3086 if (sym->st_size > elf_gp_size (abfd)
3087 || ELF_ST_TYPE (sym->st_info) == STT_TLS)
3090 /* st_value is the alignemnt constraint.
3091 That might be its actual size if it is an array or structure. */
3092 switch (sym->st_value)
3095 *secp = bfd_make_section_old_way (abfd, ".scommon_b");
3098 *secp = bfd_make_section_old_way (abfd, ".scommon_h");
3101 *secp = bfd_make_section_old_way (abfd, ".scommon_w");
3104 *secp = bfd_make_section_old_way (abfd, ".scommon_d");
3110 (*secp)->flags |= SEC_IS_COMMON;
3111 *valp = sym->st_size;
3119 /* This function can figure out the best location for a base register to access
3120 data relative to this base register
3122 sda_d0: size of first DOUBLE WORD data section
3123 sda_w0: size of first WORD data section
3124 sda_h0: size of first HALF WORD data section
3125 sda_b : size of BYTE data section
3126 sda_hi: size of second HALF WORD data section
3127 sda_w1: size of second WORD data section
3128 sda_d1: size of second DOUBLE WORD data section
3130 offset (always positive) from the beginning of sda_d0 if OK
3131 a negative error value if fail
3133 these 7 sections have to be located back to back if exist
3134 a pass in 0 value for non-existing section */
3136 /* Due to the interpretation of simm15 field of load/store depending on
3137 data accessing size, the organization of base register relative data shall
3138 like the following figure
3139 -------------------------------------------
3140 | DOUBLE WORD sized data (range +/- 128K)
3141 -------------------------------------------
3142 | WORD sized data (range +/- 64K)
3143 -------------------------------------------
3144 | HALF WORD sized data (range +/- 32K)
3145 -------------------------------------------
3146 | BYTE sized data (range +/- 16K)
3147 -------------------------------------------
3148 | HALF WORD sized data (range +/- 32K)
3149 -------------------------------------------
3150 | WORD sized data (range +/- 64K)
3151 -------------------------------------------
3152 | DOUBLE WORD sized data (range +/- 128K)
3153 -------------------------------------------
3154 Its base register shall be set to access these data freely. */
3156 /* We have to figure out the SDA_BASE value, so that we can adjust the
3157 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
3158 BFD. If we can't find it, we're stuck. We cache it in the ELF
3159 target data. We don't need to adjust the symbol value for an
3160 external symbol if we are producing relocatable output. */
3162 static asection *sda_rela_sec = NULL;
3164 #define SDA_SECTION_NUM 10
3166 static bfd_reloc_status_type
3167 nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info,
3168 bfd_vma *psb, bfd_boolean add_symbol)
3171 struct elf_nds32_link_hash_table *table;
3172 struct bfd_link_hash_entry *h, *h2;
3173 long unsigned int total = 0;
3175 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
3176 if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak))
3178 asection *first = NULL, *final = NULL, *temp;
3180 /* The first section must be 4-byte aligned to promise _SDA_BASE_ being
3181 4 byte-aligned. Therefore, it has to set the first section ".data"
3183 static const char sec_name[SDA_SECTION_NUM][10] =
3185 ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b",
3186 ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d"
3190 if (output_bfd->sections == NULL)
3192 *psb = elf_gp (output_bfd);
3193 return bfd_reloc_ok;
3196 /* Get the first and final section. */
3197 while (i < sizeof (sec_name) / sizeof (sec_name [0]))
3199 temp = bfd_get_section_by_name (output_bfd, sec_name[i]);
3200 if (temp && !first && (temp->size != 0 || temp->rawsize != 0))
3202 if (temp && (temp->size != 0 || temp->rawsize != 0))
3205 /* Summarize the sections in order to check if joining .bss. */
3206 if (temp && temp->size != 0)
3207 total += temp->size;
3208 else if (temp && temp->rawsize != 0)
3209 total += temp->rawsize;
3214 /* Check .bss size. */
3215 temp = bfd_get_section_by_name (output_bfd, ".bss");
3218 if (temp->size != 0)
3219 total += temp->size;
3220 else if (temp->rawsize != 0)
3221 total += temp->rawsize;
3223 if (total < 0x80000)
3225 if (!first && (temp->size != 0 || temp->rawsize != 0))
3227 if ((temp->size != 0 || temp->rawsize != 0))
3234 /* The middle of data region. */
3235 sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2;
3237 /* Find the section sda_base located. */
3239 while (i < sizeof (sec_name) / sizeof (sec_name [0]))
3241 final = bfd_get_section_by_name (output_bfd, sec_name[i]);
3242 if (final && (final->size != 0 || final->rawsize != 0)
3243 && sda_base >= final->vma)
3254 /* There is not any data section in output bfd, and set _SDA_BASE_ in
3255 first output section. */
3256 first = output_bfd->sections;
3257 while (first && first->size == 0 && first->rawsize == 0)
3258 first = first->next;
3261 *psb = elf_gp (output_bfd);
3262 return bfd_reloc_ok;
3264 sda_base = first->vma + first->rawsize;
3267 sda_base -= first->vma;
3268 sda_base = sda_base & (~7);
3270 if (!_bfd_generic_link_add_one_symbol
3271 (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first,
3272 (bfd_vma) sda_base, (const char *) NULL, FALSE,
3273 get_elf_backend_data (output_bfd)->collect, &h))
3276 sda_rela_sec = first;
3278 table = nds32_elf_hash_table (info);
3279 relax_fp_as_gp = table->relax_fp_as_gp;
3282 h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME,
3283 FALSE, FALSE, FALSE);
3284 /* Define a weak FP_BASE_NAME here to prevent the undefined symbol.
3285 And set FP equal to SDA_BASE to do relaxation for
3286 la $fp, _FP_BASE_. */
3287 if (!_bfd_generic_link_add_one_symbol
3288 (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK,
3289 first, (bfd_vma) sda_base, (const char *) NULL,
3290 FALSE, get_elf_backend_data (output_bfd)->collect, &h2))
3295 if (add_symbol == TRUE)
3300 elf_gp (output_bfd) = (h->u.def.value
3301 + h->u.def.section->output_section->vma
3302 + h->u.def.section->output_offset);
3306 _bfd_error_handler (_("error: Can't find symbol: _SDA_BASE_."));
3307 return bfd_reloc_dangerous;
3311 *psb = h->u.def.value + h->u.def.section->output_section->vma
3312 + h->u.def.section->output_offset;
3313 return bfd_reloc_ok;
3317 /* Return size of a PLT entry. */
3318 #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE
3321 /* Create an entry in an nds32 ELF linker hash table. */
3323 static struct bfd_hash_entry *
3324 nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3325 struct bfd_hash_table *table,
3328 struct elf_nds32_link_hash_entry *ret;
3330 ret = (struct elf_nds32_link_hash_entry *) entry;
3332 /* Allocate the structure if it has not already been allocated by a
3335 ret = (struct elf_nds32_link_hash_entry *)
3336 bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry));
3339 return (struct bfd_hash_entry *) ret;
3341 /* Call the allocation method of the superclass. */
3342 ret = (struct elf_nds32_link_hash_entry *)
3343 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string);
3347 struct elf_nds32_link_hash_entry *eh;
3349 eh = (struct elf_nds32_link_hash_entry *) ret;
3350 eh->dyn_relocs = NULL;
3351 eh->tls_type = GOT_UNKNOWN;
3354 return (struct bfd_hash_entry *) ret;
3357 /* Create an nds32 ELF linker hash table. */
3359 static struct bfd_link_hash_table *
3360 nds32_elf_link_hash_table_create (bfd *abfd)
3362 struct elf_nds32_link_hash_table *ret;
3364 bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table);
3366 ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt);
3371 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3372 nds32_elf_link_hash_newfunc,
3373 sizeof (struct elf_nds32_link_hash_entry),
3381 ret->sgotplt = NULL;
3382 ret->srelgot = NULL;
3384 ret->srelplt = NULL;
3385 ret->sdynbss = NULL;
3386 ret->srelbss = NULL;
3387 ret->sym_ld_script = NULL;
3388 ret->ex9_export_file = NULL;
3389 ret->ex9_import_file = NULL;
3391 return &ret->root.root;
3394 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
3395 shortcuts to them in our hash table. */
3398 create_got_section (bfd *dynobj, struct bfd_link_info *info)
3400 struct elf_nds32_link_hash_table *htab;
3402 if (!_bfd_elf_create_got_section (dynobj, info))
3405 htab = nds32_elf_hash_table (info);
3406 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
3407 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
3408 if (!htab->sgot || !htab->sgotplt)
3411 /* _bfd_elf_create_got_section will create it for us. */
3412 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3413 if (htab->srelgot == NULL
3414 || !bfd_set_section_flags (dynobj, htab->srelgot,
3415 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3416 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3418 || !bfd_set_section_alignment (dynobj, htab->srelgot, 2))
3424 /* Create dynamic sections when linking against a dynamic object. */
3427 nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3429 struct elf_nds32_link_hash_table *htab;
3430 flagword flags, pltflags;
3431 register asection *s;
3432 const struct elf_backend_data *bed;
3433 int ptralign = 2; /* 32-bit */
3435 bed = get_elf_backend_data (abfd);
3437 htab = nds32_elf_hash_table (info);
3439 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3440 .rel[a].bss sections. */
3442 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3443 | SEC_LINKER_CREATED);
3446 pltflags |= SEC_CODE;
3447 if (bed->plt_not_loaded)
3448 pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
3449 if (bed->plt_readonly)
3450 pltflags |= SEC_READONLY;
3452 s = bfd_make_section (abfd, ".plt");
3455 || !bfd_set_section_flags (abfd, s, pltflags)
3456 || !bfd_set_section_alignment (abfd, s, bed->plt_alignment))
3459 if (bed->want_plt_sym)
3461 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3463 struct bfd_link_hash_entry *bh = NULL;
3464 struct elf_link_hash_entry *h;
3466 if (!(_bfd_generic_link_add_one_symbol
3467 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
3468 (bfd_vma) 0, (const char *) NULL, FALSE,
3469 get_elf_backend_data (abfd)->collect, &bh)))
3472 h = (struct elf_link_hash_entry *) bh;
3474 h->type = STT_OBJECT;
3476 if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h))
3480 s = bfd_make_section (abfd,
3481 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
3484 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3485 || !bfd_set_section_alignment (abfd, s, ptralign))
3488 if (htab->sgot == NULL && !create_got_section (abfd, info))
3492 const char *secname;
3497 for (sec = abfd->sections; sec; sec = sec->next)
3499 secflags = bfd_get_section_flags (abfd, sec);
3500 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
3501 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
3503 secname = bfd_get_section_name (abfd, sec);
3504 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
3505 strcpy (relname, ".rela");
3506 strcat (relname, secname);
3507 if (bfd_get_section_by_name (abfd, secname))
3509 s = bfd_make_section (abfd, relname);
3511 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3512 || !bfd_set_section_alignment (abfd, s, ptralign))
3517 if (bed->want_dynbss)
3519 /* The .dynbss section is a place to put symbols which are defined
3520 by dynamic objects, are referenced by regular objects, and are
3521 not functions. We must allocate space for them in the process
3522 image and use a R_*_COPY reloc to tell the dynamic linker to
3523 initialize them at run time. The linker script puts the .dynbss
3524 section into the .bss section of the final image. */
3525 s = bfd_make_section (abfd, ".dynbss");
3528 || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
3530 /* The .rel[a].bss section holds copy relocs. This section is not
3531 normally needed. We need to create it here, though, so that the
3532 linker will map it to an output section. We can't just create it
3533 only if we need it, because we will not know whether we need it
3534 until we have seen all the input files, and the first time the
3535 main linker code calls BFD after examining all the input files
3536 (size_dynamic_sections) the input sections have already been
3537 mapped to the output sections. If the section turns out not to
3538 be needed, we can discard it later. We will never need this
3539 section when generating a shared object, since they do not use
3541 if (!bfd_link_pic (info))
3543 s = bfd_make_section (abfd, (bed->default_use_rela_p
3544 ? ".rela.bss" : ".rel.bss"));
3547 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3548 || !bfd_set_section_alignment (abfd, s, ptralign))
3556 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3558 nds32_elf_copy_indirect_symbol (struct bfd_link_info *info,
3559 struct elf_link_hash_entry *dir,
3560 struct elf_link_hash_entry *ind)
3562 struct elf_nds32_link_hash_entry *edir, *eind;
3564 edir = (struct elf_nds32_link_hash_entry *) dir;
3565 eind = (struct elf_nds32_link_hash_entry *) ind;
3567 if (eind->dyn_relocs != NULL)
3569 if (edir->dyn_relocs != NULL)
3571 struct elf_nds32_dyn_relocs **pp;
3572 struct elf_nds32_dyn_relocs *p;
3574 if (ind->root.type == bfd_link_hash_indirect)
3577 /* Add reloc counts against the weak sym to the strong sym
3578 list. Merge any entries against the same section. */
3579 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
3581 struct elf_nds32_dyn_relocs *q;
3583 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3584 if (q->sec == p->sec)
3586 q->pc_count += p->pc_count;
3587 q->count += p->count;
3594 *pp = edir->dyn_relocs;
3597 edir->dyn_relocs = eind->dyn_relocs;
3598 eind->dyn_relocs = NULL;
3601 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3605 /* Adjust a symbol defined by a dynamic object and referenced by a
3606 regular object. The current definition is in some section of the
3607 dynamic object, but we're not including those sections. We have to
3608 change the definition to something the rest of the link can
3612 nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3613 struct elf_link_hash_entry *h)
3615 struct elf_nds32_link_hash_table *htab;
3616 struct elf_nds32_link_hash_entry *eh;
3617 struct elf_nds32_dyn_relocs *p;
3620 unsigned int power_of_two;
3622 dynobj = elf_hash_table (info)->dynobj;
3624 /* Make sure we know what is going on here. */
3625 BFD_ASSERT (dynobj != NULL
3627 || h->u.weakdef != NULL
3628 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
3631 /* If this is a function, put it in the procedure linkage table. We
3632 will fill in the contents of the procedure linkage table later,
3633 when we know the address of the .got section. */
3634 if (h->type == STT_FUNC || h->needs_plt)
3636 if (!bfd_link_pic (info)
3639 && h->root.type != bfd_link_hash_undefweak
3640 && h->root.type != bfd_link_hash_undefined)
3642 /* This case can occur if we saw a PLT reloc in an input
3643 file, but the symbol was never referred to by a dynamic
3644 object. In such a case, we don't actually need to build
3645 a procedure linkage table, and we can just do a PCREL
3647 h->plt.offset = (bfd_vma) - 1;
3654 h->plt.offset = (bfd_vma) - 1;
3656 /* If this is a weak symbol, and there is a real definition, the
3657 processor independent code will have arranged for us to see the
3658 real definition first, and we can just use the same value. */
3659 if (h->u.weakdef != NULL)
3661 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3662 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3663 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3664 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3668 /* This is a reference to a symbol defined by a dynamic object which
3669 is not a function. */
3671 /* If we are creating a shared library, we must presume that the
3672 only references to the symbol are via the global offset table.
3673 For such cases we need not do anything here; the relocations will
3674 be handled correctly by relocate_section. */
3675 if (bfd_link_pic (info))
3678 /* If there are no references to this symbol that do not use the
3679 GOT, we don't need to generate a copy reloc. */
3680 if (!h->non_got_ref)
3683 /* If -z nocopyreloc was given, we won't generate them either. */
3684 if (info->nocopyreloc)
3690 eh = (struct elf_nds32_link_hash_entry *) h;
3691 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3693 s = p->sec->output_section;
3694 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
3698 /* If we didn't find any dynamic relocs in sections which needs the
3699 copy reloc, then we'll be keeping the dynamic relocs and avoiding
3707 /* We must allocate the symbol in our .dynbss section, which will
3708 become part of the .bss section of the executable. There will be
3709 an entry for this symbol in the .dynsym section. The dynamic
3710 object will contain position independent code, so all references
3711 from the dynamic object to this symbol will go through the global
3712 offset table. The dynamic linker will use the .dynsym entry to
3713 determine the address it must put in the global offset table, so
3714 both the dynamic object and the regular object will refer to the
3715 same memory location for the variable. */
3717 htab = nds32_elf_hash_table (info);
3719 BFD_ASSERT (s != NULL);
3721 /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker
3722 to copy the initial value out of the dynamic object and into the
3723 runtime process image. We need to remember the offset into the
3724 .rela.bss section we are going to use. */
3725 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3729 srel = htab->srelbss;
3730 BFD_ASSERT (srel != NULL);
3731 srel->size += sizeof (Elf32_External_Rela);
3735 /* We need to figure out the alignment required for this symbol. I
3736 have no idea how ELF linkers handle this. */
3737 power_of_two = bfd_log2 (h->size);
3738 if (power_of_two > 3)
3741 /* Apply the required alignment. */
3742 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3743 if (power_of_two > bfd_get_section_alignment (dynobj, s))
3745 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
3749 /* Define the symbol as being at this point in the section. */
3750 h->root.u.def.section = s;
3751 h->root.u.def.value = s->size;
3753 /* Increment the section size to make room for the symbol. */
3759 /* Allocate space in .plt, .got and associated reloc sections for
3763 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3765 struct bfd_link_info *info;
3766 struct elf_nds32_link_hash_table *htab;
3767 struct elf_nds32_link_hash_entry *eh;
3768 struct elf_nds32_dyn_relocs *p;
3770 if (h->root.type == bfd_link_hash_indirect)
3773 if (h->root.type == bfd_link_hash_warning)
3774 /* When warning symbols are created, they **replace** the "real"
3775 entry in the hash table, thus we never get to see the real
3776 symbol in a hash traversal. So look at it now. */
3777 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3779 info = (struct bfd_link_info *) inf;
3780 htab = nds32_elf_hash_table (info);
3782 eh = (struct elf_nds32_link_hash_entry *) h;
3784 if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
3786 /* Make sure this symbol is output as a dynamic symbol.
3787 Undefined weak syms won't yet be marked as dynamic. */
3788 if (h->dynindx == -1 && !h->forced_local)
3790 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3794 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
3796 asection *s = htab->splt;
3798 /* If this is the first .plt entry, make room for the special
3801 s->size += PLT_ENTRY_SIZE;
3803 h->plt.offset = s->size;
3805 /* If this symbol is not defined in a regular file, and we are
3806 not generating a shared library, then set the symbol to this
3807 location in the .plt. This is required to make function
3808 pointers compare as equal between the normal executable and
3809 the shared library. */
3810 if (!bfd_link_pic (info) && !h->def_regular)
3812 h->root.u.def.section = s;
3813 h->root.u.def.value = h->plt.offset;
3816 /* Make room for this entry. */
3817 s->size += PLT_ENTRY_SIZE;
3819 /* We also need to make an entry in the .got.plt section, which
3820 will be placed in the .got section by the linker script. */
3821 htab->sgotplt->size += 4;
3823 /* We also need to make an entry in the .rel.plt section. */
3824 htab->srelplt->size += sizeof (Elf32_External_Rela);
3828 h->plt.offset = (bfd_vma) - 1;
3834 h->plt.offset = (bfd_vma) - 1;
3838 if (h->got.refcount > 0)
3842 int tls_type = elf32_nds32_hash_entry (h)->tls_type;
3844 /* Make sure this symbol is output as a dynamic symbol.
3845 Undefined weak syms won't yet be marked as dynamic. */
3846 if (h->dynindx == -1 && !h->forced_local)
3848 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3853 h->got.offset = s->size;
3855 if (tls_type == GOT_UNKNOWN)
3857 else if (tls_type == GOT_NORMAL
3858 || tls_type == GOT_TLS_IE)
3859 /* Need a GOT slot. */
3862 dyn = htab->root.dynamic_sections_created;
3863 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
3864 htab->srelgot->size += sizeof (Elf32_External_Rela);
3867 h->got.offset = (bfd_vma) - 1;
3869 if (eh->dyn_relocs == NULL)
3872 /* In the shared -Bsymbolic case, discard space allocated for
3873 dynamic pc-relative relocs against symbols which turn out to be
3874 defined in regular objects. For the normal shared case, discard
3875 space for pc-relative relocs that have become local due to symbol
3876 visibility changes. */
3878 if (bfd_link_pic (info))
3880 if (h->def_regular && (h->forced_local || info->symbolic))
3882 struct elf_nds32_dyn_relocs **pp;
3884 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
3886 p->count -= p->pc_count;
3897 /* For the non-shared case, discard space for relocs against
3898 symbols which turn out to need copy relocs or are not dynamic. */
3903 || (htab->root.dynamic_sections_created
3904 && (h->root.type == bfd_link_hash_undefweak
3905 || h->root.type == bfd_link_hash_undefined))))
3907 /* Make sure this symbol is output as a dynamic symbol.
3908 Undefined weak syms won't yet be marked as dynamic. */
3909 if (h->dynindx == -1 && !h->forced_local)
3911 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3915 /* If that succeeded, we know we'll be keeping all the
3917 if (h->dynindx != -1)
3921 eh->dyn_relocs = NULL;
3926 /* Finally, allocate space. */
3927 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3929 asection *sreloc = elf_section_data (p->sec)->sreloc;
3930 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3936 /* Find any dynamic relocs that apply to read-only sections. */
3939 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3941 struct elf_nds32_link_hash_entry *eh;
3942 struct elf_nds32_dyn_relocs *p;
3944 if (h->root.type == bfd_link_hash_warning)
3945 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3947 eh = (struct elf_nds32_link_hash_entry *) h;
3948 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3950 asection *s = p->sec->output_section;
3952 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3954 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3956 info->flags |= DF_TEXTREL;
3958 /* Not an error, just cut short the traversal. */
3965 /* Set the sizes of the dynamic sections. */
3968 nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3969 struct bfd_link_info *info)
3971 struct elf_nds32_link_hash_table *htab;
3977 htab = nds32_elf_hash_table (info);
3978 dynobj = htab->root.dynobj;
3979 BFD_ASSERT (dynobj != NULL);
3981 if (htab->root.dynamic_sections_created)
3983 /* Set the contents of the .interp section to the interpreter. */
3984 if (!bfd_link_pic (info) && !info->nointerp)
3986 s = bfd_get_section_by_name (dynobj, ".interp");
3987 BFD_ASSERT (s != NULL);
3988 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3989 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3993 /* Set up .got offsets for local syms, and space for local dynamic
3995 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3997 bfd_signed_vma *local_got;
3998 bfd_signed_vma *end_local_got;
3999 bfd_size_type locsymcount;
4000 Elf_Internal_Shdr *symtab_hdr;
4003 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4006 for (s = ibfd->sections; s != NULL; s = s->next)
4008 struct elf_nds32_dyn_relocs *p;
4010 for (p = ((struct elf_nds32_dyn_relocs *)
4011 elf_section_data (s)->local_dynrel);
4012 p != NULL; p = p->next)
4014 if (!bfd_is_abs_section (p->sec)
4015 && bfd_is_abs_section (p->sec->output_section))
4017 /* Input section has been discarded, either because
4018 it is a copy of a linkonce section or due to
4019 linker script /DISCARD/, so we'll be discarding
4022 else if (p->count != 0)
4024 srel = elf_section_data (p->sec)->sreloc;
4025 srel->size += p->count * sizeof (Elf32_External_Rela);
4026 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
4027 info->flags |= DF_TEXTREL;
4032 local_got = elf_local_got_refcounts (ibfd);
4036 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4037 locsymcount = symtab_hdr->sh_info;
4038 end_local_got = local_got + locsymcount;
4040 srel = htab->srelgot;
4041 for (; local_got < end_local_got; ++local_got)
4045 *local_got = s->size;
4047 if (bfd_link_pic (info))
4048 srel->size += sizeof (Elf32_External_Rela);
4051 *local_got = (bfd_vma) - 1;
4055 /* Allocate global sym .plt and .got entries, and space for global
4056 sym dynamic relocs. */
4057 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info);
4059 /* We now have determined the sizes of the various dynamic sections.
4060 Allocate memory for them. */
4062 for (s = dynobj->sections; s != NULL; s = s->next)
4064 if ((s->flags & SEC_LINKER_CREATED) == 0)
4067 if (s == htab->splt)
4069 /* Strip this section if we don't need it; see the
4072 else if (s == htab->sgot)
4074 got_size += s->size;
4076 else if (s == htab->sgotplt)
4078 got_size += s->size;
4080 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4082 if (s->size != 0 && s != htab->srelplt)
4085 /* We use the reloc_count field as a counter if we need
4086 to copy relocs into the output file. */
4091 /* It's not one of our sections, so don't allocate space. */
4097 /* If we don't need this section, strip it from the
4098 output file. This is mostly to handle .rela.bss and
4099 .rela.plt. We must create both sections in
4100 create_dynamic_sections, because they must be created
4101 before the linker maps input sections to output
4102 sections. The linker does that before
4103 adjust_dynamic_symbol is called, and it is that
4104 function which decides whether anything needs to go
4105 into these sections. */
4106 s->flags |= SEC_EXCLUDE;
4110 /* Allocate memory for the section contents. We use bfd_zalloc
4111 here in case unused entries are not reclaimed before the
4112 section's contents are written out. This should not happen,
4113 but this way if it does, we get a R_NDS32_NONE reloc instead
4115 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
4116 if (s->contents == NULL)
4121 if (htab->root.dynamic_sections_created)
4123 /* Add some entries to the .dynamic section. We fill in the
4124 values later, in nds32_elf_finish_dynamic_sections, but we
4125 must add the entries now so that we get the correct size for
4126 the .dynamic section. The DT_DEBUG entry is filled in by the
4127 dynamic linker and used by the debugger. */
4128 #define add_dynamic_entry(TAG, VAL) \
4129 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4131 if (!bfd_link_pic (info))
4133 if (!add_dynamic_entry (DT_DEBUG, 0))
4137 if (htab->splt->size != 0)
4139 if (!add_dynamic_entry (DT_PLTGOT, 0)
4140 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4141 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4142 || !add_dynamic_entry (DT_JMPREL, 0))
4148 if (!add_dynamic_entry (DT_RELA, 0)
4149 || !add_dynamic_entry (DT_RELASZ, 0)
4150 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4153 /* If any dynamic relocs apply to a read-only section,
4154 then we need a DT_TEXTREL entry. */
4155 if ((info->flags & DF_TEXTREL) == 0)
4156 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
4159 if ((info->flags & DF_TEXTREL) != 0)
4161 if (!add_dynamic_entry (DT_TEXTREL, 0))
4166 #undef add_dynamic_entry
4171 static bfd_reloc_status_type
4172 nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd,
4173 bfd_vma relocation, bfd_byte *location)
4177 bfd_reloc_status_type flag;
4178 unsigned int rightshift = howto->rightshift;
4179 unsigned int bitpos = howto->bitpos;
4181 /* If the size is negative, negate RELOCATION. This isn't very
4183 if (howto->size < 0)
4184 relocation = -relocation;
4186 /* Get the value we are going to relocate. */
4187 size = bfd_get_reloc_size (howto);
4194 return bfd_reloc_ok;
4196 x = bfd_getb16 (location);
4199 x = bfd_getb32 (location);
4203 /* Check for overflow. FIXME: We may drop bits during the addition
4204 which we don't check for. We must either check at every single
4205 operation, which would be tedious, or we must do the computations
4206 in a type larger than bfd_vma, which would be inefficient. */
4207 flag = bfd_reloc_ok;
4208 if (howto->complain_on_overflow != complain_overflow_dont)
4210 bfd_vma addrmask, fieldmask, signmask, ss;
4213 /* Get the values to be added together. For signed and unsigned
4214 relocations, we assume that all values should be truncated to
4215 the size of an address. For bitfields, all the bits matter.
4216 See also bfd_check_overflow. */
4217 fieldmask = N_ONES (howto->bitsize);
4218 signmask = ~fieldmask;
4219 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
4220 a = (relocation & addrmask) >> rightshift;
4221 b = (x & howto->src_mask & addrmask) >> bitpos;
4223 switch (howto->complain_on_overflow)
4225 case complain_overflow_signed:
4226 /* If any sign bits are set, all sign bits must be set.
4227 That is, A must be a valid negative address after
4229 signmask = ~(fieldmask >> 1);
4232 case complain_overflow_bitfield:
4233 /* Much like the signed check, but for a field one bit
4234 wider. We allow a bitfield to represent numbers in the
4235 range -2**n to 2**n-1, where n is the number of bits in the
4236 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
4237 can't overflow, which is exactly what we want. */
4239 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
4240 flag = bfd_reloc_overflow;
4242 /* We only need this next bit of code if the sign bit of B
4243 is below the sign bit of A. This would only happen if
4244 SRC_MASK had fewer bits than BITSIZE. Note that if
4245 SRC_MASK has more bits than BITSIZE, we can get into
4246 trouble; we would need to verify that B is in range, as
4247 we do for A above. */
4248 ss = ((~howto->src_mask) >> 1) & howto->src_mask;
4251 /* Set all the bits above the sign bit. */
4254 /* Now we can do the addition. */
4257 /* See if the result has the correct sign. Bits above the
4258 sign bit are junk now; ignore them. If the sum is
4259 positive, make sure we did not have all negative inputs;
4260 if the sum is negative, make sure we did not have all
4261 positive inputs. The test below looks only at the sign
4262 bits, and it really just
4263 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
4265 We mask with addrmask here to explicitly allow an address
4266 wrap-around. The Linux kernel relies on it, and it is
4267 the only way to write assembler code which can run when
4268 loaded at a location 0x80000000 away from the location at
4269 which it is linked. */
4270 if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask)
4271 flag = bfd_reloc_overflow;
4275 case complain_overflow_unsigned:
4276 /* Checking for an unsigned overflow is relatively easy:
4277 trim the addresses and add, and trim the result as well.
4278 Overflow is normally indicated when the result does not
4279 fit in the field. However, we also need to consider the
4280 case when, e.g., fieldmask is 0x7fffffff or smaller, an
4281 input is 0x80000000, and bfd_vma is only 32 bits; then we
4282 will get sum == 0, but there is an overflow, since the
4283 inputs did not fit in the field. Instead of doing a
4284 separate test, we can check for this by or-ing in the
4285 operands when testing for the sum overflowing its final
4287 sum = (a + b) & addrmask;
4288 if ((a | b | sum) & signmask)
4289 flag = bfd_reloc_overflow;
4297 /* Put RELOCATION in the right bits. */
4298 relocation >>= (bfd_vma) rightshift;
4299 relocation <<= (bfd_vma) bitpos;
4301 /* Add RELOCATION to the right bits of X. */
4303 Because the relaxation may generate duplicate relocation at one address,
4304 an addition to immediate in the instruction may cause the relocation added
4306 This bug should be fixed in assembler, but a check is also needed here. */
4307 if (howto->partial_inplace)
4308 x = ((x & ~howto->dst_mask)
4309 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
4311 x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask));
4314 /* Put the relocated value back in the object file. */
4324 bfd_putb16 (x, location);
4327 bfd_putb32 (x, location);
4334 static bfd_reloc_status_type
4335 nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd,
4336 asection *input_section, bfd_byte *contents,
4337 bfd_vma address, bfd_vma value, bfd_vma addend)
4341 /* Sanity check the address. */
4342 if (address > bfd_get_section_limit (input_bfd, input_section))
4343 return bfd_reloc_outofrange;
4345 /* This function assumes that we are dealing with a basic relocation
4346 against a symbol. We want to compute the value of the symbol to
4347 relocate to. This is just VALUE, the value of the symbol, plus
4348 ADDEND, any addend associated with the reloc. */
4349 relocation = value + addend;
4351 /* If the relocation is PC relative, we want to set RELOCATION to
4352 the distance between the symbol (currently in RELOCATION) and the
4353 location we are relocating. Some targets (e.g., i386-aout)
4354 arrange for the contents of the section to be the negative of the
4355 offset of the location within the section; for such targets
4356 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
4357 simply leave the contents of the section as zero; for such
4358 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
4359 need to subtract out the offset of the location within the
4360 section (which is just ADDRESS). */
4361 if (howto->pc_relative)
4363 relocation -= (input_section->output_section->vma
4364 + input_section->output_offset);
4365 if (howto->pcrel_offset)
4366 relocation -= address;
4369 return nds32_relocate_contents (howto, input_bfd, relocation,
4370 contents + address);
4374 nds32_elf_output_symbol_hook (struct bfd_link_info *info,
4376 Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED,
4377 asection *input_sec,
4378 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
4381 FILE *sym_ld_script = NULL;
4382 struct elf_nds32_link_hash_table *table;
4384 table = nds32_elf_hash_table (info);
4385 sym_ld_script = table->sym_ld_script;
4389 if (!h || !name || *name == '\0')
4392 if (input_sec->flags & SEC_EXCLUDE)
4395 if (!check_start_export_sym)
4397 fprintf (sym_ld_script, "SECTIONS\n{\n");
4398 check_start_export_sym = 1;
4401 if (h->root.type == bfd_link_hash_defined
4402 || h->root.type == bfd_link_hash_defweak)
4404 if (!h->root.u.def.section->output_section)
4407 if (bfd_is_const_section (input_sec))
4408 source = input_sec->name;
4410 source = input_sec->owner->filename;
4412 fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n",
4413 h->root.root.string,
4414 (long) (h->root.u.def.value
4415 + h->root.u.def.section->output_section->vma
4416 + h->root.u.def.section->output_offset), source);
4422 /* Relocate an NDS32/D ELF section.
4423 There is some attempt to make this function usable for many architectures,
4424 both for RELA and REL type relocs, if only to serve as a learning tool.
4426 The RELOCATE_SECTION function is called by the new ELF backend linker
4427 to handle the relocations for a section.
4429 The relocs are always passed as Rela structures; if the section
4430 actually uses Rel structures, the r_addend field will always be
4433 This function is responsible for adjust the section contents as
4434 necessary, and (if using Rela relocs and generating a
4435 relocatable output file) adjusting the reloc addend as
4438 This function does not have to worry about setting the reloc
4439 address or the reloc symbol index.
4441 LOCAL_SYMS is a pointer to the swapped in local symbols.
4443 LOCAL_SECTIONS is an array giving the section in the input file
4444 corresponding to the st_shndx field of each local symbol.
4446 The global hash table entry for the global symbols can be found
4447 via elf_sym_hashes (input_bfd).
4449 When generating relocatable output, this function must handle
4450 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4451 going to be the section symbol corresponding to the output
4452 section, which means that the addend must be adjusted
4456 dtpoff_base (struct bfd_link_info *info)
4458 /* If tls_sec is NULL, we should have signalled an error already. */
4459 if (elf_hash_table (info)->tls_sec == NULL)
4461 return elf_hash_table (info)->tls_sec->vma;
4465 nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
4466 struct bfd_link_info * info,
4468 asection * input_section,
4469 bfd_byte * contents,
4470 Elf_Internal_Rela * relocs,
4471 Elf_Internal_Sym * local_syms,
4472 asection ** local_sections)
4474 Elf_Internal_Shdr *symtab_hdr;
4475 struct elf_link_hash_entry **sym_hashes;
4476 Elf_Internal_Rela *rel, *relend;
4477 bfd_boolean ret = TRUE; /* Assume success. */
4479 bfd_reloc_status_type r;
4480 const char *errmsg = NULL;
4482 struct elf_nds32_link_hash_table *htab;
4484 bfd_vma *local_got_offsets;
4485 asection *sgot, *splt, *sreloc;
4486 bfd_vma high_address;
4487 struct elf_nds32_link_hash_table *table;
4488 int eliminate_gc_relocs;
4489 bfd_vma fpbase_addr;
4491 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4492 sym_hashes = elf_sym_hashes (input_bfd);
4493 htab = nds32_elf_hash_table (info);
4494 high_address = bfd_get_section_limit (input_bfd, input_section);
4496 dynobj = htab->root.dynobj;
4497 local_got_offsets = elf_local_got_offsets (input_bfd);
4504 relend = relocs + input_section->reloc_count;
4506 table = nds32_elf_hash_table (info);
4507 eliminate_gc_relocs = table->eliminate_gc_relocs;
4508 /* By this time, we can adjust the value of _SDA_BASE_. */
4509 if ((!bfd_link_relocatable (info)))
4511 is_SDA_BASE_set = 1;
4512 r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE);
4513 if (r != bfd_reloc_ok)
4517 if (is_ITB_BASE_set == 0)
4519 /* Set the _ITB_BASE_. */
4520 if (!nds32_elf_ex9_itb_base (info))
4522 _bfd_error_handler (_("%B: error: Cannot set _ITB_BASE_"),
4524 bfd_set_error (bfd_error_bad_value);
4528 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
4529 if (!nds32_elf_ifc_reloc ())
4530 _bfd_error_handler (_("error: IFC relocation error."));
4532 /* Relocation for .ex9.itable. */
4533 if (table->target_optimize & NDS32_RELAX_EX9_ON
4534 || (table->ex9_import_file && table->update_ex9_table))
4535 nds32_elf_ex9_reloc_jmp (info);
4537 /* Use gp as fp to prevent truncated fit. Because in relaxation time
4538 the fp value is set as gp, and it has be reverted for instruction
4540 fpbase_addr = elf_gp (output_bfd);
4542 for (rel = relocs; rel < relend; rel++)
4544 enum elf_nds32_reloc_type r_type;
4545 reloc_howto_type *howto = NULL;
4546 unsigned long r_symndx;
4547 struct elf_link_hash_entry *h = NULL;
4548 Elf_Internal_Sym *sym = NULL;
4552 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
4553 ensure it's zero (we use REL relocs, not RELA). Therefore this
4554 should be assigning zero to `addend', but for clarity we use
4557 bfd_vma addend = rel->r_addend;
4558 bfd_vma offset = rel->r_offset;
4560 r_type = ELF32_R_TYPE (rel->r_info);
4561 if (r_type >= R_NDS32_max)
4563 _bfd_error_handler (_("%B: error: unknown relocation type %d."),
4565 bfd_set_error (bfd_error_bad_value);
4570 if (r_type == R_NDS32_GNU_VTENTRY
4571 || r_type == R_NDS32_GNU_VTINHERIT
4572 || r_type == R_NDS32_NONE
4573 || r_type == R_NDS32_RELA_GNU_VTENTRY
4574 || r_type == R_NDS32_RELA_GNU_VTINHERIT
4575 || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA)
4576 || r_type == R_NDS32_DATA
4577 || r_type == R_NDS32_TRAN
4578 || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7))
4581 /* If we enter the fp-as-gp region. Resolve the address
4583 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN
4584 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
4588 /* Distance to relocation of best fp-base is encoded in R_SYM. */
4589 dist = rel->r_addend >> 16;
4590 fpbase_addr = calculate_memory_address (input_bfd, rel + dist,
4591 local_syms, symtab_hdr);
4593 else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END
4594 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
4596 fpbase_addr = elf_gp (output_bfd);
4599 if (((r_type >= R_NDS32_DWARF2_OP1_RELA
4600 && r_type <= R_NDS32_DWARF2_LEB_RELA)
4601 || r_type >= R_NDS32_RELAX_ENTRY) && !bfd_link_relocatable (info))
4604 howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
4605 r_symndx = ELF32_R_SYM (rel->r_info);
4607 /* This is a final link. */
4612 if (r_symndx < symtab_hdr->sh_info)
4615 sym = local_syms + r_symndx;
4616 sec = local_sections[r_symndx];
4618 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4619 addend = rel->r_addend;
4623 /* External symbol. */
4624 bfd_boolean warned, ignored, unresolved_reloc;
4625 int symndx = r_symndx - symtab_hdr->sh_info;
4627 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4628 r_symndx, symtab_hdr, sym_hashes, h, sec,
4629 relocation, unresolved_reloc, warned,
4632 /* la $fp, _FP_BASE_ is per-function (region).
4633 Handle it specially. */
4634 switch ((int) r_type)
4636 case R_NDS32_SDA19S0_RELA:
4637 case R_NDS32_SDA15S0_RELA:
4638 case R_NDS32_20_RELA:
4639 if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string,
4642 relocation = fpbase_addr;
4649 if (bfd_link_relocatable (info))
4651 /* This is a relocatable link. We don't have to change
4652 anything, unless the reloc is against a section symbol,
4653 in which case we have to adjust according to where the
4654 section symbol winds up in the output section. */
4655 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
4656 rel->r_addend += sec->output_offset + sym->st_value;
4661 /* Sanity check the address. */
4662 if (offset > high_address)
4664 r = bfd_reloc_outofrange;
4668 if ((r_type >= R_NDS32_DWARF2_OP1_RELA
4669 && r_type <= R_NDS32_DWARF2_LEB_RELA)
4670 || r_type >= R_NDS32_RELAX_ENTRY)
4673 switch ((int) r_type)
4675 case R_NDS32_GOTOFF:
4676 /* Relocation is relative to the start of the global offset
4677 table (for ld24 rx, #uimm24), e.g. access at label+addend
4679 ld24 rx. #label@GOTOFF + addend
4681 case R_NDS32_GOTOFF_HI20:
4682 case R_NDS32_GOTOFF_LO12:
4683 case R_NDS32_GOTOFF_LO15:
4684 case R_NDS32_GOTOFF_LO19:
4685 BFD_ASSERT (sgot != NULL);
4687 relocation -= elf_gp (output_bfd);
4690 case R_NDS32_9_PLTREL:
4691 case R_NDS32_25_PLTREL:
4692 /* Relocation is to the entry for this symbol in the
4693 procedure linkage table. */
4695 /* The native assembler will generate a 25_PLTREL reloc
4696 for a local symbol if you assemble a call from one
4697 section to another when using -K pic. */
4701 if (h->forced_local)
4704 /* We didn't make a PLT entry for this symbol. This
4705 happens when statically linking PIC code, or when
4706 using -Bsymbolic. */
4707 if (h->plt.offset == (bfd_vma) - 1)
4710 relocation = (splt->output_section->vma
4711 + splt->output_offset + h->plt.offset);
4714 case R_NDS32_PLT_GOTREL_HI20:
4715 case R_NDS32_PLT_GOTREL_LO12:
4716 case R_NDS32_PLT_GOTREL_LO15:
4717 case R_NDS32_PLT_GOTREL_LO19:
4718 case R_NDS32_PLT_GOTREL_LO20:
4719 if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1)
4721 /* We didn't make a PLT entry for this symbol. This
4722 happens when statically linking PIC code, or when
4723 using -Bsymbolic. */
4724 relocation -= elf_gp (output_bfd);
4728 relocation = (splt->output_section->vma
4729 + splt->output_offset + h->plt.offset);
4731 relocation -= elf_gp (output_bfd);
4734 case R_NDS32_PLTREL_HI20:
4735 case R_NDS32_PLTREL_LO12:
4737 /* Relocation is to the entry for this symbol in the
4738 procedure linkage table. */
4740 /* The native assembler will generate a 25_PLTREL reloc
4741 for a local symbol if you assemble a call from one
4742 section to another when using -K pic. */
4746 if (h->forced_local)
4749 if (h->plt.offset == (bfd_vma) - 1)
4750 /* We didn't make a PLT entry for this symbol. This
4751 happens when statically linking PIC code, or when
4752 using -Bsymbolic. */
4758 relocation = (splt->output_section->vma
4759 + splt->output_offset
4760 + h->plt.offset + 4)
4761 - (input_section->output_section->vma
4762 + input_section->output_offset
4767 case R_NDS32_GOTPC20:
4768 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4769 ld24 rx,#_GLOBAL_OFFSET_TABLE_ */
4770 relocation = elf_gp (output_bfd);
4773 case R_NDS32_GOTPC_HI20:
4774 case R_NDS32_GOTPC_LO12:
4776 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4778 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
4779 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4782 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
4783 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4785 relocation = elf_gp (output_bfd);
4786 relocation -= (input_section->output_section->vma
4787 + input_section->output_offset + rel->r_offset);
4793 case R_NDS32_GOT_HI20:
4794 case R_NDS32_GOT_LO12:
4795 case R_NDS32_GOT_LO15:
4796 case R_NDS32_GOT_LO19:
4797 /* Relocation is to the entry for this symbol in the global
4799 BFD_ASSERT (sgot != NULL);
4806 off = h->got.offset;
4807 BFD_ASSERT (off != (bfd_vma) - 1);
4808 dyn = htab->root.dynamic_sections_created;
4809 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4810 bfd_link_pic (info),
4812 || (bfd_link_pic (info)
4815 || h->forced_local) && h->def_regular))
4817 /* This is actually a static link, or it is a
4818 -Bsymbolic link and the symbol is defined
4819 locally, or the symbol was forced to be local
4820 because of a version file. We must initialize
4821 this entry in the global offset table. Since the
4822 offset must always be a multiple of 4, we use the
4823 least significant bit to record whether we have
4824 initialized it already.
4826 When doing a dynamic link, we create a .rela.got
4827 relocation entry to initialize the value. This
4828 is done in the finish_dynamic_symbol routine. */
4833 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4837 relocation = sgot->output_section->vma + sgot->output_offset + off
4838 - elf_gp (output_bfd);
4845 BFD_ASSERT (local_got_offsets != NULL
4846 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
4848 off = local_got_offsets[r_symndx];
4850 /* The offset must always be a multiple of 4. We use
4851 the least significant bit to record whether we have
4852 already processed this entry. */
4857 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4859 if (bfd_link_pic (info))
4862 Elf_Internal_Rela outrel;
4864 /* We need to generate a R_NDS32_RELATIVE reloc
4865 for the dynamic linker. */
4866 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4867 BFD_ASSERT (srelgot != NULL);
4869 outrel.r_offset = (elf_gp (output_bfd)
4870 + sgot->output_offset + off);
4871 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
4872 outrel.r_addend = relocation;
4873 loc = srelgot->contents;
4875 srelgot->reloc_count * sizeof (Elf32_External_Rela);
4876 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4877 ++srelgot->reloc_count;
4879 local_got_offsets[r_symndx] |= 1;
4881 relocation = sgot->output_section->vma + sgot->output_offset + off
4882 - elf_gp (output_bfd);
4887 case R_NDS32_16_RELA:
4888 case R_NDS32_20_RELA:
4889 case R_NDS32_5_RELA:
4890 case R_NDS32_32_RELA:
4891 case R_NDS32_9_PCREL_RELA:
4892 case R_NDS32_WORD_9_PCREL_RELA:
4893 case R_NDS32_10_UPCREL_RELA:
4894 case R_NDS32_15_PCREL_RELA:
4895 case R_NDS32_17_PCREL_RELA:
4896 case R_NDS32_25_PCREL_RELA:
4897 case R_NDS32_HI20_RELA:
4898 case R_NDS32_LO12S3_RELA:
4899 case R_NDS32_LO12S2_RELA:
4900 case R_NDS32_LO12S2_DP_RELA:
4901 case R_NDS32_LO12S2_SP_RELA:
4902 case R_NDS32_LO12S1_RELA:
4903 case R_NDS32_LO12S0_RELA:
4904 case R_NDS32_LO12S0_ORI_RELA:
4905 if (bfd_link_pic (info) && r_symndx != 0
4906 && (input_section->flags & SEC_ALLOC) != 0
4907 && (eliminate_gc_relocs == 0
4908 || (sec && (sec->flags & SEC_EXCLUDE) == 0))
4909 && ((r_type != R_NDS32_9_PCREL_RELA
4910 && r_type != R_NDS32_WORD_9_PCREL_RELA
4911 && r_type != R_NDS32_10_UPCREL_RELA
4912 && r_type != R_NDS32_15_PCREL_RELA
4913 && r_type != R_NDS32_17_PCREL_RELA
4914 && r_type != R_NDS32_25_PCREL_RELA
4915 && !(r_type == R_NDS32_32_RELA
4916 && strcmp (input_section->name, ".eh_frame") == 0))
4917 || (h != NULL && h->dynindx != -1
4918 && (!info->symbolic || !h->def_regular))))
4920 Elf_Internal_Rela outrel;
4921 bfd_boolean skip, relocate;
4924 /* When generating a shared object, these relocations
4925 are copied into the output file to be resolved at run
4932 name = bfd_elf_string_from_elf_section
4933 (input_bfd, elf_elfheader (input_bfd)->e_shstrndx,
4934 elf_section_data (input_section)->rela.hdr->sh_name);
4938 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
4939 && strcmp (bfd_get_section_name (input_bfd,
4943 sreloc = bfd_get_section_by_name (dynobj, name);
4944 BFD_ASSERT (sreloc != NULL);
4950 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
4954 if (outrel.r_offset == (bfd_vma) - 1)
4956 else if (outrel.r_offset == (bfd_vma) - 2)
4957 skip = TRUE, relocate = TRUE;
4958 outrel.r_offset += (input_section->output_section->vma
4959 + input_section->output_offset);
4962 memset (&outrel, 0, sizeof outrel);
4963 else if (r_type == R_NDS32_17_PCREL_RELA
4964 || r_type == R_NDS32_15_PCREL_RELA
4965 || r_type == R_NDS32_25_PCREL_RELA)
4967 BFD_ASSERT (h != NULL && h->dynindx != -1);
4968 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4969 outrel.r_addend = rel->r_addend;
4973 /* h->dynindx may be -1 if this symbol was marked to
4976 || ((info->symbolic || h->dynindx == -1)
4980 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
4981 outrel.r_addend = relocation + rel->r_addend;
4985 BFD_ASSERT (h->dynindx != -1);
4986 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4987 outrel.r_addend = rel->r_addend;
4991 loc = sreloc->contents;
4992 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
4993 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4994 ++sreloc->reloc_count;
4996 /* If this reloc is against an external symbol, we do
4997 not want to fiddle with the addend. Otherwise, we
4998 need to include the symbol value so that it becomes
4999 an addend for the dynamic reloc. */
5005 case R_NDS32_25_ABS_RELA:
5006 if (bfd_link_pic (info))
5009 (_("%s: warning: cannot deal R_NDS32_25_ABS_RELA in shared "
5010 "mode."), bfd_get_filename (input_bfd));
5015 case R_NDS32_9_PCREL:
5016 r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section,
5018 sec, relocation, addend);
5023 Elf_Internal_Rela *lorel;
5025 /* We allow an arbitrary number of HI20 relocs before the
5026 LO12 reloc. This permits gcc to emit the HI and LO relocs
5028 for (lorel = rel + 1;
5030 && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++)
5033 && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3
5034 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2
5035 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1
5036 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0))
5038 nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel,
5039 contents, relocation + addend);
5043 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5044 contents, offset, relocation,
5050 case R_NDS32_GOT17S2_RELA:
5051 case R_NDS32_GOT15S2_RELA:
5055 BFD_ASSERT (sgot != NULL);
5061 off = h->got.offset;
5062 BFD_ASSERT (off != (bfd_vma) - 1);
5064 dyn = htab->root.dynamic_sections_created;
5065 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL
5066 (dyn, bfd_link_pic (info), h)
5067 || (bfd_link_pic (info)
5073 /* This is actually a static link, or it is a
5074 -Bsymbolic link and the symbol is defined
5075 locally, or the symbol was forced to be local
5076 because of a version file. We must initialize
5077 this entry in the global offset table. Since the
5078 offset must always be a multiple of 4, we use the
5079 least significant bit to record whether we have
5080 initialized it already.
5082 When doing a dynamic link, we create a .rela.got
5083 relocation entry to initialize the value. This
5084 is done in the finish_dynamic_symbol routine. */
5089 bfd_put_32 (output_bfd, relocation,
5090 sgot->contents + off);
5099 BFD_ASSERT (local_got_offsets != NULL
5100 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5102 off = local_got_offsets[r_symndx];
5104 /* The offset must always be a multiple of 4. We use
5105 the least significant bit to record whether we have
5106 already processed this entry. */
5111 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
5113 if (bfd_link_pic (info))
5116 Elf_Internal_Rela outrel;
5118 /* We need to generate a R_NDS32_RELATIVE reloc
5119 for the dynamic linker. */
5120 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
5121 BFD_ASSERT (srelgot != NULL);
5123 outrel.r_offset = (elf_gp (output_bfd)
5124 + sgot->output_offset + off);
5125 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5126 outrel.r_addend = relocation;
5127 loc = srelgot->contents;
5129 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5130 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5131 ++srelgot->reloc_count;
5133 local_got_offsets[r_symndx] |= 1;
5136 relocation = sgot->output_section->vma + sgot->output_offset + off
5137 - elf_gp (output_bfd);
5139 if (relocation & align)
5141 /* Incorrect alignment. */
5143 (_("%B: warning: unaligned access to GOT entry."), input_bfd);
5145 r = bfd_reloc_dangerous;
5150 case R_NDS32_SDA16S3_RELA:
5151 case R_NDS32_SDA15S3_RELA:
5152 case R_NDS32_SDA15S3:
5156 case R_NDS32_SDA17S2_RELA:
5157 case R_NDS32_SDA15S2_RELA:
5158 case R_NDS32_SDA12S2_SP_RELA:
5159 case R_NDS32_SDA12S2_DP_RELA:
5160 case R_NDS32_SDA15S2:
5161 case R_NDS32_SDA_FP7U2_RELA:
5165 case R_NDS32_SDA18S1_RELA:
5166 case R_NDS32_SDA15S1_RELA:
5167 case R_NDS32_SDA15S1:
5171 case R_NDS32_SDA19S0_RELA:
5172 case R_NDS32_SDA15S0_RELA:
5173 case R_NDS32_SDA15S0:
5177 BFD_ASSERT (sec != NULL);
5179 /* If the symbol is in the abs section, the out_bfd will be null.
5180 This happens when the relocation has a symbol@GOTOFF. */
5181 r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE);
5182 if (r != bfd_reloc_ok)
5185 (_("%B: warning: relocate SDA_BASE failed."), input_bfd);
5190 /* At this point `relocation' contains the object's
5192 if (r_type == R_NDS32_SDA_FP7U2_RELA)
5194 relocation -= fpbase_addr;
5198 /* Now it contains the offset from _SDA_BASE_. */
5200 /* Make sure alignment is correct. */
5202 if (relocation & align)
5204 /* Incorrect alignment. */
5206 (_("%B(%A): warning: unaligned small data access of type %d."),
5207 input_bfd, input_section, r_type);
5214 case R_NDS32_17IFC_PCREL_RELA:
5215 case R_NDS32_10IFCU_PCREL_RELA:
5219 case R_NDS32_TLS_LE_HI20:
5220 case R_NDS32_TLS_LE_LO12:
5221 case R_NDS32_TLS_LE_20:
5222 case R_NDS32_TLS_LE_15S0:
5223 case R_NDS32_TLS_LE_15S1:
5224 case R_NDS32_TLS_LE_15S2:
5225 if (elf_hash_table (info)->tls_sec != NULL)
5226 relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET);
5228 case R_NDS32_TLS_IE_HI20:
5229 case R_NDS32_TLS_IE_LO12S2:
5231 /* Relocation is to the entry for this symbol in the global
5233 unsigned int tls_type;
5235 Elf_Internal_Rela outrel;
5240 BFD_ASSERT (sgot != NULL);
5245 off = h->got.offset;
5246 BFD_ASSERT (off != (bfd_vma) - 1);
5247 dyn = htab->root.dynamic_sections_created;
5248 tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type;
5249 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
5250 && (!bfd_link_pic (info)
5251 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5256 /* Never happen currently. */
5257 BFD_ASSERT (local_got_offsets != NULL
5258 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5260 off = local_got_offsets[r_symndx];
5262 tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx];
5264 relocation = sgot->output_section->vma + sgot->output_offset + off;
5266 if (r_type == R_NDS32_TLS_IE_LO12S2)
5269 /* The offset must always be a multiple of 4. We use
5270 the least significant bit to record whether we have
5271 already processed this entry. */
5276 bfd_boolean need_relocs = FALSE;
5277 srelgot = htab->srelgot;
5278 if ((bfd_link_pic (info) || indx != 0)
5280 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5281 || h->root.type != bfd_link_hash_undefweak))
5284 BFD_ASSERT (srelgot != NULL);
5286 if (tls_type & GOT_TLS_IE)
5290 if (h->dynindx == 0)
5291 outrel.r_addend = relocation - dtpoff_base (info);
5293 outrel.r_addend = 0;
5294 outrel.r_offset = (sgot->output_section->vma
5295 + sgot->output_offset
5298 ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF);
5300 loc = srelgot->contents;
5302 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5303 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5304 ++srelgot->reloc_count;
5307 bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET,
5308 sgot->contents + off);
5314 /* DON'T fall through. */
5317 /* OLD_NDS32_RELOC. */
5319 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5320 contents, offset, relocation, addend);
5324 switch ((int) r_type)
5326 case R_NDS32_20_RELA:
5327 case R_NDS32_5_RELA:
5328 case R_NDS32_9_PCREL_RELA:
5329 case R_NDS32_WORD_9_PCREL_RELA:
5330 case R_NDS32_10_UPCREL_RELA:
5331 case R_NDS32_15_PCREL_RELA:
5332 case R_NDS32_17_PCREL_RELA:
5333 case R_NDS32_25_PCREL_RELA:
5334 case R_NDS32_25_ABS_RELA:
5335 case R_NDS32_HI20_RELA:
5336 case R_NDS32_LO12S3_RELA:
5337 case R_NDS32_LO12S2_RELA:
5338 case R_NDS32_LO12S2_DP_RELA:
5339 case R_NDS32_LO12S2_SP_RELA:
5340 case R_NDS32_LO12S1_RELA:
5341 case R_NDS32_LO12S0_RELA:
5342 case R_NDS32_LO12S0_ORI_RELA:
5343 case R_NDS32_SDA16S3_RELA:
5344 case R_NDS32_SDA17S2_RELA:
5345 case R_NDS32_SDA18S1_RELA:
5346 case R_NDS32_SDA19S0_RELA:
5347 case R_NDS32_SDA15S3_RELA:
5348 case R_NDS32_SDA15S2_RELA:
5349 case R_NDS32_SDA12S2_DP_RELA:
5350 case R_NDS32_SDA12S2_SP_RELA:
5351 case R_NDS32_SDA15S1_RELA:
5352 case R_NDS32_SDA15S0_RELA:
5353 case R_NDS32_SDA_FP7U2_RELA:
5354 case R_NDS32_9_PLTREL:
5355 case R_NDS32_25_PLTREL:
5357 case R_NDS32_GOT_HI20:
5358 case R_NDS32_GOT_LO12:
5359 case R_NDS32_GOT_LO15:
5360 case R_NDS32_GOT_LO19:
5361 case R_NDS32_GOT15S2_RELA:
5362 case R_NDS32_GOT17S2_RELA:
5363 case R_NDS32_GOTPC20:
5364 case R_NDS32_GOTPC_HI20:
5365 case R_NDS32_GOTPC_LO12:
5366 case R_NDS32_GOTOFF:
5367 case R_NDS32_GOTOFF_HI20:
5368 case R_NDS32_GOTOFF_LO12:
5369 case R_NDS32_GOTOFF_LO15:
5370 case R_NDS32_GOTOFF_LO19:
5371 case R_NDS32_PLTREL_HI20:
5372 case R_NDS32_PLTREL_LO12:
5373 case R_NDS32_PLT_GOTREL_HI20:
5374 case R_NDS32_PLT_GOTREL_LO12:
5375 case R_NDS32_PLT_GOTREL_LO15:
5376 case R_NDS32_PLT_GOTREL_LO19:
5377 case R_NDS32_PLT_GOTREL_LO20:
5378 case R_NDS32_17IFC_PCREL_RELA:
5379 case R_NDS32_10IFCU_PCREL_RELA:
5380 case R_NDS32_TLS_LE_HI20:
5381 case R_NDS32_TLS_LE_LO12:
5382 case R_NDS32_TLS_IE_HI20:
5383 case R_NDS32_TLS_IE_LO12S2:
5384 case R_NDS32_TLS_LE_20:
5385 case R_NDS32_TLS_LE_15S0:
5386 case R_NDS32_TLS_LE_15S1:
5387 case R_NDS32_TLS_LE_15S2:
5388 /* Instruction related relocs must handle endian properly. */
5389 /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */
5390 r = nds32_elf_final_link_relocate (howto, input_bfd,
5391 input_section, contents,
5392 rel->r_offset, relocation,
5397 /* All other relocs can use default handler. */
5398 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5399 contents, rel->r_offset,
5400 relocation, rel->r_addend);
5406 if (r != bfd_reloc_ok)
5408 /* FIXME: This should be generic enough to go in a utility. */
5412 name = h->root.root.string;
5415 name = bfd_elf_string_from_elf_section
5416 (input_bfd, symtab_hdr->sh_link, sym->st_name);
5417 if (name == NULL || *name == '\0')
5418 name = bfd_section_name (input_bfd, sec);
5426 case bfd_reloc_overflow:
5427 (*info->callbacks->reloc_overflow)
5428 (info, (h ? &h->root : NULL), name, howto->name,
5429 (bfd_vma) 0, input_bfd, input_section, offset);
5432 case bfd_reloc_undefined:
5433 (*info->callbacks->undefined_symbol)
5434 (info, name, input_bfd, input_section, offset, TRUE);
5437 case bfd_reloc_outofrange:
5438 errmsg = _("internal error: out of range error");
5441 case bfd_reloc_notsupported:
5442 errmsg = _("internal error: unsupported relocation error");
5445 case bfd_reloc_dangerous:
5446 errmsg = _("internal error: dangerous error");
5450 errmsg = _("internal error: unknown error");
5454 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
5455 input_section, offset);
5464 /* Finish up dynamic symbol handling. We set the contents of various
5465 dynamic sections here. */
5468 nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5469 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
5471 struct elf_nds32_link_hash_table *htab;
5474 htab = nds32_elf_hash_table (info);
5476 if (h->plt.offset != (bfd_vma) - 1)
5484 bfd_vma local_plt_offset;
5485 Elf_Internal_Rela rela;
5487 /* This symbol has an entry in the procedure linkage table. Set
5490 BFD_ASSERT (h->dynindx != -1);
5493 sgot = htab->sgotplt;
5494 srela = htab->srelplt;
5495 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
5497 /* Get the index in the procedure linkage table which
5498 corresponds to this symbol. This is the index of this symbol
5499 in all the symbols for which we are making plt entries. The
5500 first entry in the procedure linkage table is reserved. */
5501 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
5503 /* Get the offset into the .got table of the entry that
5504 corresponds to this function. Each .got entry is 4 bytes.
5505 The first three are reserved. */
5506 got_offset = (plt_index + 3) * 4;
5508 /* Fill in the entry in the procedure linkage table. */
5509 if (!bfd_link_pic (info))
5513 insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma
5514 + sgot->output_offset + got_offset) >> 12)
5516 bfd_putb32 (insn, splt->contents + h->plt.offset);
5518 insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma
5519 + sgot->output_offset + got_offset) & 0x0fff)
5521 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
5523 insn = PLT_ENTRY_WORD2;
5524 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
5526 insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff);
5527 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
5529 insn = PLT_ENTRY_WORD4
5530 + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff);
5531 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
5532 local_plt_offset = 12;
5536 /* sda_base must be set at this time. */
5540 /* FIXME, sda_base is 65536, it will damage opcode. */
5541 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5542 offset = sgot->output_section->vma + sgot->output_offset + got_offset
5543 - elf_gp (output_bfd);
5544 insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff);
5545 bfd_putb32 (insn, splt->contents + h->plt.offset);
5547 insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff);
5548 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
5550 insn = PLT_PIC_ENTRY_WORD2;
5551 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
5553 insn = PLT_PIC_ENTRY_WORD3;
5554 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
5556 insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff);
5557 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
5559 insn = PLT_PIC_ENTRY_WORD5
5560 + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff);
5561 bfd_putb32 (insn, splt->contents + h->plt.offset + 20);
5563 local_plt_offset = 16;
5566 /* Fill in the entry in the global offset table,
5567 so it will fall through to the next instruction for the first time. */
5568 bfd_put_32 (output_bfd,
5569 (splt->output_section->vma + splt->output_offset
5570 + h->plt.offset + local_plt_offset),
5571 sgot->contents + got_offset);
5573 /* Fill in the entry in the .rela.plt section. */
5574 rela.r_offset = (sgot->output_section->vma
5575 + sgot->output_offset + got_offset);
5576 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT);
5578 loc = srela->contents;
5579 loc += plt_index * sizeof (Elf32_External_Rela);
5580 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5582 if (!h->def_regular)
5584 /* Mark the symbol as undefined, rather than as defined in
5585 the .plt section. Leave the value alone. */
5586 sym->st_shndx = SHN_UNDEF;
5587 if (!h->ref_regular_nonweak)
5592 if (h->got.offset != (bfd_vma) - 1)
5596 Elf_Internal_Rela rela;
5598 /* This symbol has an entry in the global offset table.
5602 srela = htab->srelgot;
5603 BFD_ASSERT (sgot != NULL && srela != NULL);
5605 rela.r_offset = (sgot->output_section->vma
5606 + sgot->output_offset + (h->got.offset & ~1));
5608 /* If this is a -Bsymbolic link, and the symbol is defined
5609 locally, we just want to emit a RELATIVE reloc. Likewise if
5610 the symbol was forced to be local because of a version file.
5611 The entry in the global offset table will already have been
5612 initialized in the relocate_section function. */
5613 if (bfd_link_pic (info)
5615 || h->dynindx == -1 || h->forced_local) && h->def_regular)
5617 rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5618 rela.r_addend = (h->root.u.def.value
5619 + h->root.u.def.section->output_section->vma
5620 + h->root.u.def.section->output_offset);
5624 BFD_ASSERT ((h->got.offset & 1) == 0);
5625 bfd_put_32 (output_bfd, (bfd_vma) 0,
5626 sgot->contents + h->got.offset);
5627 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT);
5631 loc = srela->contents;
5632 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
5633 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5634 ++srela->reloc_count;
5640 Elf_Internal_Rela rela;
5642 /* This symbols needs a copy reloc. Set it up. */
5644 BFD_ASSERT (h->dynindx != -1
5645 && (h->root.type == bfd_link_hash_defined
5646 || h->root.type == bfd_link_hash_defweak));
5648 s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss");
5649 BFD_ASSERT (s != NULL);
5651 rela.r_offset = (h->root.u.def.value
5652 + h->root.u.def.section->output_section->vma
5653 + h->root.u.def.section->output_offset);
5654 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY);
5657 loc += s->reloc_count * sizeof (Elf32_External_Rela);
5658 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5662 /* Mark some specially defined symbols as absolute. */
5663 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5664 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5665 sym->st_shndx = SHN_ABS;
5671 /* Finish up the dynamic sections. */
5674 nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5676 struct elf_nds32_link_hash_table *htab;
5681 htab = nds32_elf_hash_table (info);
5682 dynobj = htab->root.dynobj;
5684 sgot = htab->sgotplt;
5685 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5687 if (htab->root.dynamic_sections_created)
5690 Elf32_External_Dyn *dyncon, *dynconend;
5692 BFD_ASSERT (sgot != NULL && sdyn != NULL);
5694 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5695 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5697 for (; dyncon < dynconend; dyncon++)
5699 Elf_Internal_Dyn dyn;
5702 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5715 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
5716 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5721 dyn.d_un.d_val = s->size;
5722 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5726 /* My reading of the SVR4 ABI indicates that the
5727 procedure linkage table relocs (DT_JMPREL) should be
5728 included in the overall relocs (DT_RELA). This is
5729 what Solaris does. However, UnixWare can not handle
5730 that case. Therefore, we override the DT_RELASZ entry
5731 here to make it not include the JMPREL relocs. Since
5732 the linker script arranges for .rela.plt to follow all
5733 other relocation sections, we don't have to worry
5734 about changing the DT_RELA entry. */
5735 if (htab->srelplt != NULL)
5738 dyn.d_un.d_val -= s->size;
5740 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5745 /* Fill in the first entry in the procedure linkage table. */
5747 if (splt && splt->size > 0)
5749 if (bfd_link_pic (info))
5754 /* FIXME, sda_base is 65536, it will damage opcode. */
5755 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5756 offset = sgot->output_section->vma + sgot->output_offset + 4
5757 - elf_gp (output_bfd);
5758 insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff);
5759 bfd_putb32 (insn, splt->contents);
5761 /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */
5762 /* here has a typo? */
5763 insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff);
5764 bfd_putb32 (insn, splt->contents + 4);
5766 insn = PLT0_PIC_ENTRY_WORD2;
5767 bfd_putb32 (insn, splt->contents + 8);
5769 insn = PLT0_PIC_ENTRY_WORD3;
5770 bfd_putb32 (insn, splt->contents + 12);
5772 insn = PLT0_PIC_ENTRY_WORD4;
5773 bfd_putb32 (insn, splt->contents + 16);
5775 insn = PLT0_PIC_ENTRY_WORD5;
5776 bfd_putb32 (insn, splt->contents + 20);
5783 /* addr = .got + 4 */
5784 addr = sgot->output_section->vma + sgot->output_offset + 4;
5785 insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff);
5786 bfd_putb32 (insn, splt->contents);
5788 insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff);
5789 bfd_putb32 (insn, splt->contents + 4);
5791 insn = PLT0_ENTRY_WORD2;
5792 bfd_putb32 (insn, splt->contents + 8);
5794 insn = PLT0_ENTRY_WORD3;
5795 bfd_putb32 (insn, splt->contents + 12);
5797 insn = PLT0_ENTRY_WORD4;
5798 bfd_putb32 (insn, splt->contents + 16);
5801 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
5806 /* Fill in the first three entries in the global offset table. */
5807 if (sgot && sgot->size > 0)
5810 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5812 bfd_put_32 (output_bfd,
5813 sdyn->output_section->vma + sdyn->output_offset,
5815 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5816 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5818 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5825 /* Set the right machine number. */
5828 nds32_elf_object_p (bfd *abfd)
5830 static unsigned int cur_arch = 0;
5832 if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH))
5834 /* E_N1_ARCH is a wild card, so it is set only when no others exist. */
5835 cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH);
5842 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1);
5845 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h);
5847 case E_NDS_ARCH_STAR_V2_0:
5848 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2);
5850 case E_NDS_ARCH_STAR_V3_0:
5851 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3);
5853 case E_NDS_ARCH_STAR_V3_M:
5854 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m);
5861 /* Store the machine number in the flags field. */
5864 nds32_elf_final_write_processing (bfd *abfd,
5865 bfd_boolean linker ATTRIBUTE_UNUSED)
5868 static unsigned int cur_mach = 0;
5870 if (bfd_mach_n1 != bfd_get_mach (abfd))
5872 cur_mach = bfd_get_mach (abfd);
5878 /* Only happen when object is empty, since the case is abandon. */
5880 val |= E_NDS_ABI_AABI;
5881 val |= E_NDS32_ELF_VER_1_4;
5886 case bfd_mach_n1h_v2:
5887 val = E_NDS_ARCH_STAR_V2_0;
5889 case bfd_mach_n1h_v3:
5890 val = E_NDS_ARCH_STAR_V3_0;
5892 case bfd_mach_n1h_v3m:
5893 val = E_NDS_ARCH_STAR_V3_M;
5900 elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH;
5901 elf_elfheader (abfd)->e_flags |= val;
5904 /* Function to keep NDS32 specific file flags. */
5907 nds32_elf_set_private_flags (bfd *abfd, flagword flags)
5909 BFD_ASSERT (!elf_flags_init (abfd)
5910 || elf_elfheader (abfd)->e_flags == flags);
5912 elf_elfheader (abfd)->e_flags = flags;
5913 elf_flags_init (abfd) = TRUE;
5918 convert_e_flags (unsigned int e_flags, unsigned int arch)
5920 if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9)
5922 /* From 0.9 to 1.0. */
5923 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0;
5925 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5926 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
5927 if (arch == E_NDS_ARCH_STAR_V1_0)
5934 /* From 1.0 to 2.0. */
5935 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0;
5937 /* Clear E_NDS32_HAS_MFUSR_PC_INST. */
5938 e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST;
5940 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5941 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
5946 nds32_check_vec_size (bfd *ibfd)
5948 static unsigned int nds32_vec_size = 0;
5950 asection *sec_t = NULL;
5951 bfd_byte *contents = NULL;
5953 sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags");
5955 if (sec_t && sec_t->size >= 4)
5957 /* Get vec_size in file. */
5958 unsigned int flag_t;
5960 nds32_get_section_contents (ibfd, sec_t, &contents, TRUE);
5961 flag_t = bfd_get_32 (ibfd, contents);
5963 /* The value could only be 4 or 16. */
5965 if (!nds32_vec_size)
5966 /* Set if not set yet. */
5967 nds32_vec_size = (flag_t & 0x3);
5968 else if (nds32_vec_size != (flag_t & 0x3))
5971 (_("%B: ISR vector size mismatch"
5972 " with previous modules, previous %u-byte, current %u-byte"),
5974 nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff,
5975 (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff);
5979 /* Only keep the first vec_size section. */
5980 sec_t->flags |= SEC_EXCLUDE;
5986 /* Merge backend specific data from an object file to the output
5987 object file when linking. */
5990 nds32_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5994 flagword out_16regs;
5996 flagword out_no_mac;
5998 flagword out_version;
5999 flagword in_version;
6000 flagword out_fpu_config;
6001 flagword in_fpu_config;
6003 /* TODO: Revise to use object-attributes instead. */
6004 if (!nds32_check_vec_size (ibfd))
6007 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6008 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6011 if (bfd_little_endian (ibfd) != bfd_little_endian (obfd))
6014 (_("%B: warning: Endian mismatch with previous modules."), ibfd);
6016 bfd_set_error (bfd_error_bad_value);
6020 in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION;
6021 if (in_version == E_NDS32_ELF_VER_1_2)
6024 (_("%B: warning: Older version of object file encountered, "
6025 "Please recompile with current tool chain."), ibfd);
6028 /* We may need to merge V1 and V2 arch object files to V2. */
6029 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6030 != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
6032 /* Need to convert version. */
6033 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6034 == E_NDS_ARCH_STAR_RESERVED)
6036 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6038 else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9
6039 || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6040 > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
6042 elf_elfheader (obfd)->e_flags =
6043 convert_e_flags (elf_elfheader (obfd)->e_flags,
6044 (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH));
6048 elf_elfheader (ibfd)->e_flags =
6049 convert_e_flags (elf_elfheader (ibfd)->e_flags,
6050 (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH));
6054 /* Extract some flags. */
6055 in_flags = elf_elfheader (ibfd)->e_flags
6056 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
6057 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
6059 /* The following flags need special treatment. */
6060 in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
6061 in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
6062 in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF;
6064 /* Extract some flags. */
6065 out_flags = elf_elfheader (obfd)->e_flags
6066 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
6067 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
6069 /* The following flags need special treatment. */
6070 out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
6071 out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
6072 out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF;
6073 out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION;
6074 if (!elf_flags_init (obfd))
6076 /* If the input is the default architecture then do not
6077 bother setting the flags for the output architecture,
6078 instead allow future merges to do this. If no future
6079 merges ever set these flags then they will retain their
6080 unitialised values, which surprise surprise, correspond
6081 to the default values. */
6082 if (bfd_get_arch_info (ibfd)->the_default)
6085 elf_flags_init (obfd) = TRUE;
6086 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6088 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6089 && bfd_get_arch_info (obfd)->the_default)
6091 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6092 bfd_get_mach (ibfd));
6098 /* Check flag compatibility. */
6099 if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI))
6102 (_("%B: error: ABI mismatch with previous modules."), ibfd);
6104 bfd_set_error (bfd_error_bad_value);
6108 if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH))
6110 if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH))
6113 (_("%B: error: Instruction set mismatch with previous modules."), ibfd);
6115 bfd_set_error (bfd_error_bad_value);
6120 /* When linking with V1.2 and V1.3 objects together the output is V1.2.
6121 and perf ext1 and DIV are mergerd to perf ext1. */
6122 if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2)
6124 elf_elfheader (obfd)->e_flags =
6125 (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6126 | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6127 | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6128 ? E_NDS32_HAS_EXT_INST : 0)
6129 | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6130 ? E_NDS32_HAS_EXT_INST : 0)
6131 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6132 | ((in_version > out_version) ? out_version : in_version);
6136 if (in_version != out_version)
6138 (_("%B: warning: Incompatible elf-versions %s and %s."),
6139 ibfd, nds32_elfver_strtab[out_version],
6140 nds32_elfver_strtab[in_version]);
6142 elf_elfheader (obfd)->e_flags = in_flags | out_flags
6143 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6144 | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config)
6145 | (in_version > out_version ? out_version : in_version);
6151 /* Display the flags field. */
6154 nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6156 FILE *file = (FILE *) ptr;
6158 BFD_ASSERT (abfd != NULL && ptr != NULL);
6160 _bfd_elf_print_private_bfd_data (abfd, ptr);
6162 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
6164 switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)
6168 fprintf (file, _(": n1 instructions"));
6171 fprintf (file, _(": n1h instructions"));
6181 nds32_elf_action_discarded (asection *sec)
6185 (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0)
6188 return _bfd_elf_default_action_discarded (sec);
6192 nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
6193 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
6194 Elf_Internal_Sym *sym)
6197 switch (ELF32_R_TYPE (rel->r_info))
6199 case R_NDS32_GNU_VTINHERIT:
6200 case R_NDS32_GNU_VTENTRY:
6201 case R_NDS32_RELA_GNU_VTINHERIT:
6202 case R_NDS32_RELA_GNU_VTENTRY:
6206 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6210 nds32_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec,
6211 const Elf_Internal_Rela *relocs)
6213 /* Update the got entry reference counts for the section being removed. */
6214 Elf_Internal_Shdr *symtab_hdr;
6215 struct elf_link_hash_entry **sym_hashes;
6216 bfd_signed_vma *local_got_refcounts;
6217 const Elf_Internal_Rela *rel, *relend;
6219 elf_section_data (sec)->local_dynrel = NULL;
6221 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6222 sym_hashes = elf_sym_hashes (abfd);
6223 local_got_refcounts = elf_local_got_refcounts (abfd);
6225 relend = relocs + sec->reloc_count;
6226 for (rel = relocs; rel < relend; rel++)
6228 unsigned long r_symndx;
6229 struct elf_link_hash_entry *h = NULL;
6231 r_symndx = ELF32_R_SYM (rel->r_info);
6232 if (r_symndx >= symtab_hdr->sh_info)
6234 /* External symbol. */
6235 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6236 while (h->root.type == bfd_link_hash_indirect
6237 || h->root.type == bfd_link_hash_warning)
6238 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6241 switch (ELF32_R_TYPE (rel->r_info))
6243 case R_NDS32_GOT_HI20:
6244 case R_NDS32_GOT_LO12:
6245 case R_NDS32_GOT_LO15:
6246 case R_NDS32_GOT_LO19:
6247 case R_NDS32_GOT17S2_RELA:
6248 case R_NDS32_GOT15S2_RELA:
6249 case R_NDS32_GOTOFF:
6250 case R_NDS32_GOTOFF_HI20:
6251 case R_NDS32_GOTOFF_LO12:
6252 case R_NDS32_GOTOFF_LO15:
6253 case R_NDS32_GOTOFF_LO19:
6255 case R_NDS32_GOTPC_HI20:
6256 case R_NDS32_GOTPC_LO12:
6257 case R_NDS32_GOTPC20:
6260 if (h->got.refcount > 0)
6265 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
6266 local_got_refcounts[r_symndx]--;
6270 case R_NDS32_16_RELA:
6271 case R_NDS32_20_RELA:
6272 case R_NDS32_5_RELA:
6273 case R_NDS32_32_RELA:
6274 case R_NDS32_HI20_RELA:
6275 case R_NDS32_LO12S3_RELA:
6276 case R_NDS32_LO12S2_RELA:
6277 case R_NDS32_LO12S2_DP_RELA:
6278 case R_NDS32_LO12S2_SP_RELA:
6279 case R_NDS32_LO12S1_RELA:
6280 case R_NDS32_LO12S0_RELA:
6281 case R_NDS32_LO12S0_ORI_RELA:
6282 case R_NDS32_SDA16S3_RELA:
6283 case R_NDS32_SDA17S2_RELA:
6284 case R_NDS32_SDA18S1_RELA:
6285 case R_NDS32_SDA19S0_RELA:
6286 case R_NDS32_SDA15S3_RELA:
6287 case R_NDS32_SDA15S2_RELA:
6288 case R_NDS32_SDA12S2_DP_RELA:
6289 case R_NDS32_SDA12S2_SP_RELA:
6290 case R_NDS32_SDA15S1_RELA:
6291 case R_NDS32_SDA15S0_RELA:
6292 case R_NDS32_SDA_FP7U2_RELA:
6293 case R_NDS32_15_PCREL_RELA:
6294 case R_NDS32_17_PCREL_RELA:
6295 case R_NDS32_25_PCREL_RELA:
6298 struct elf_nds32_link_hash_entry *eh;
6299 struct elf_nds32_dyn_relocs **pp;
6300 struct elf_nds32_dyn_relocs *p;
6302 if (!bfd_link_pic (info) && h->plt.refcount > 0)
6303 h->plt.refcount -= 1;
6305 eh = (struct elf_nds32_link_hash_entry *) h;
6307 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6310 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
6311 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA
6312 || ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA)
6322 case R_NDS32_9_PLTREL:
6323 case R_NDS32_25_PLTREL:
6326 if (h->plt.refcount > 0)
6339 /* Look through the relocs for a section during the first phase.
6340 Since we don't do .gots or .plts, we just need to consider the
6341 virtual table relocs for gc. */
6344 nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
6345 asection *sec, const Elf_Internal_Rela *relocs)
6347 Elf_Internal_Shdr *symtab_hdr;
6348 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
6349 const Elf_Internal_Rela *rel;
6350 const Elf_Internal_Rela *rel_end;
6351 struct elf_nds32_link_hash_table *htab;
6353 asection *sreloc = NULL;
6355 if (bfd_link_relocatable (info))
6358 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6359 sym_hashes = elf_sym_hashes (abfd);
6361 sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
6362 if (!elf_bad_symtab (abfd))
6363 sym_hashes_end -= symtab_hdr->sh_info;
6365 htab = nds32_elf_hash_table (info);
6366 dynobj = htab->root.dynobj;
6368 rel_end = relocs + sec->reloc_count;
6369 for (rel = relocs; rel < rel_end; rel++)
6371 enum elf_nds32_reloc_type r_type;
6372 struct elf_link_hash_entry *h;
6373 unsigned long r_symndx;
6374 int tls_type, old_tls_type;
6376 r_symndx = ELF32_R_SYM (rel->r_info);
6377 r_type = ELF32_R_TYPE (rel->r_info);
6378 if (r_symndx < symtab_hdr->sh_info)
6382 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6383 while (h->root.type == bfd_link_hash_indirect
6384 || h->root.type == bfd_link_hash_warning)
6385 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6388 /* Some relocs require a global offset table. We create
6389 got section here, since these relocation need got section
6390 and it is not created yet. */
6391 if (htab->sgot == NULL)
6395 case R_NDS32_GOT_HI20:
6396 case R_NDS32_GOT_LO12:
6397 case R_NDS32_GOT_LO15:
6398 case R_NDS32_GOT_LO19:
6399 case R_NDS32_GOT17S2_RELA:
6400 case R_NDS32_GOT15S2_RELA:
6401 case R_NDS32_GOTOFF:
6402 case R_NDS32_GOTOFF_HI20:
6403 case R_NDS32_GOTOFF_LO12:
6404 case R_NDS32_GOTOFF_LO15:
6405 case R_NDS32_GOTOFF_LO19:
6406 case R_NDS32_GOTPC20:
6407 case R_NDS32_GOTPC_HI20:
6408 case R_NDS32_GOTPC_LO12:
6410 case R_NDS32_TLS_IE_HI20:
6411 case R_NDS32_TLS_IE_LO12S2:
6413 htab->root.dynobj = dynobj = abfd;
6414 if (!create_got_section (dynobj, info))
6423 switch ((int) r_type)
6425 case R_NDS32_GOT_HI20:
6426 case R_NDS32_GOT_LO12:
6427 case R_NDS32_GOT_LO15:
6428 case R_NDS32_GOT_LO19:
6430 case R_NDS32_TLS_IE_HI20:
6431 case R_NDS32_TLS_IE_LO12S2:
6434 case R_NDS32_TLS_IE_HI20:
6435 case R_NDS32_TLS_IE_LO12S2:
6436 tls_type = GOT_TLS_IE;
6439 tls_type = GOT_NORMAL;
6444 old_tls_type = elf32_nds32_hash_entry (h)->tls_type;
6445 h->got.refcount += 1;
6449 bfd_signed_vma *local_got_refcounts;
6451 /* This is a global offset table entry for a local
6453 local_got_refcounts = elf_local_got_refcounts (abfd);
6454 if (local_got_refcounts == NULL)
6458 size = symtab_hdr->sh_info;
6459 size *= sizeof (bfd_signed_vma);
6460 local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size);
6461 if (local_got_refcounts == NULL)
6463 elf_local_got_refcounts (abfd) = local_got_refcounts;
6465 local_got_refcounts[r_symndx] += 1;
6466 old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx];
6469 /* We will already have issued an error message if there
6470 is a TLS/non-TLS mismatch, based on the symbol
6471 type. So just combine any TLS types needed. */
6472 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
6473 && tls_type != GOT_NORMAL)
6474 tls_type |= old_tls_type;
6476 if (old_tls_type != tls_type)
6479 elf32_nds32_hash_entry (h)->tls_type = tls_type;
6481 elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type;
6484 case R_NDS32_9_PLTREL:
6485 case R_NDS32_25_PLTREL:
6486 case R_NDS32_PLTREL_HI20:
6487 case R_NDS32_PLTREL_LO12:
6488 case R_NDS32_PLT_GOTREL_HI20:
6489 case R_NDS32_PLT_GOTREL_LO12:
6490 case R_NDS32_PLT_GOTREL_LO15:
6491 case R_NDS32_PLT_GOTREL_LO19:
6492 case R_NDS32_PLT_GOTREL_LO20:
6494 /* This symbol requires a procedure linkage table entry. We
6495 actually build the entry in adjust_dynamic_symbol,
6496 because this might be a case of linking PIC code without
6497 linking in any dynamic objects, in which case we don't
6498 need to generate a procedure linkage table after all. */
6500 /* If this is a local symbol, we resolve it directly without
6501 creating a procedure linkage table entry. */
6505 if (h->forced_local)
6508 elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL;
6510 h->plt.refcount += 1;
6513 case R_NDS32_16_RELA:
6514 case R_NDS32_20_RELA:
6515 case R_NDS32_5_RELA:
6516 case R_NDS32_32_RELA:
6517 case R_NDS32_HI20_RELA:
6518 case R_NDS32_LO12S3_RELA:
6519 case R_NDS32_LO12S2_RELA:
6520 case R_NDS32_LO12S2_DP_RELA:
6521 case R_NDS32_LO12S2_SP_RELA:
6522 case R_NDS32_LO12S1_RELA:
6523 case R_NDS32_LO12S0_RELA:
6524 case R_NDS32_LO12S0_ORI_RELA:
6525 case R_NDS32_SDA16S3_RELA:
6526 case R_NDS32_SDA17S2_RELA:
6527 case R_NDS32_SDA18S1_RELA:
6528 case R_NDS32_SDA19S0_RELA:
6529 case R_NDS32_SDA15S3_RELA:
6530 case R_NDS32_SDA15S2_RELA:
6531 case R_NDS32_SDA12S2_DP_RELA:
6532 case R_NDS32_SDA12S2_SP_RELA:
6533 case R_NDS32_SDA15S1_RELA:
6534 case R_NDS32_SDA15S0_RELA:
6535 case R_NDS32_SDA_FP7U2_RELA:
6536 case R_NDS32_15_PCREL_RELA:
6537 case R_NDS32_17_PCREL_RELA:
6538 case R_NDS32_25_PCREL_RELA:
6540 if (h != NULL && !bfd_link_pic (info))
6543 h->plt.refcount += 1;
6546 /* If we are creating a shared library, and this is a reloc against
6547 a global symbol, or a non PC relative reloc against a local
6548 symbol, then we need to copy the reloc into the shared library.
6549 However, if we are linking with -Bsymbolic, we do not need to
6550 copy a reloc against a global symbol which is defined in an
6551 object we are including in the link (i.e., DEF_REGULAR is set).
6552 At this point we have not seen all the input files, so it is
6553 possible that DEF_REGULAR is not set now but will be set later
6554 (it is never cleared). We account for that possibility below by
6555 storing information in the dyn_relocs field of the hash table
6556 entry. A similar situation occurs when creating shared libraries
6557 and symbol visibility changes render the symbol local.
6559 If on the other hand, we are creating an executable, we may need
6560 to keep relocations for symbols satisfied by a dynamic library
6561 if we manage to avoid copy relocs for the symbol. */
6562 if ((bfd_link_pic (info)
6563 && (sec->flags & SEC_ALLOC) != 0
6564 && ((r_type != R_NDS32_25_PCREL_RELA
6565 && r_type != R_NDS32_15_PCREL_RELA
6566 && r_type != R_NDS32_17_PCREL_RELA
6567 && !(r_type == R_NDS32_32_RELA
6568 && strcmp (sec->name, ".eh_frame") == 0))
6571 || h->root.type == bfd_link_hash_defweak
6572 || !h->def_regular))))
6573 || (!bfd_link_pic (info)
6574 && (sec->flags & SEC_ALLOC) != 0
6576 && (h->root.type == bfd_link_hash_defweak
6577 || !h->def_regular)))
6579 struct elf_nds32_dyn_relocs *p;
6580 struct elf_nds32_dyn_relocs **head;
6583 htab->root.dynobj = dynobj = abfd;
6585 /* When creating a shared object, we must copy these
6586 relocs into the output file. We create a reloc
6587 section in dynobj and make room for the reloc. */
6592 name = bfd_elf_string_from_elf_section
6593 (abfd, elf_elfheader (abfd)->e_shstrndx,
6594 elf_section_data (sec)->rela.hdr->sh_name);
6598 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6599 && strcmp (bfd_get_section_name (abfd, sec),
6602 sreloc = bfd_get_section_by_name (dynobj, name);
6607 sreloc = bfd_make_section (dynobj, name);
6608 flags = (SEC_HAS_CONTENTS | SEC_READONLY
6609 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
6610 if ((sec->flags & SEC_ALLOC) != 0)
6611 flags |= SEC_ALLOC | SEC_LOAD;
6613 || !bfd_set_section_flags (dynobj, sreloc, flags)
6614 || !bfd_set_section_alignment (dynobj, sreloc, 2))
6617 elf_section_type (sreloc) = SHT_RELA;
6619 elf_section_data (sec)->sreloc = sreloc;
6622 /* If this is a global symbol, we count the number of
6623 relocations we need for this symbol. */
6625 head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs;
6630 Elf_Internal_Sym *isym;
6631 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
6635 /* Track dynamic relocs needed for local syms too. */
6636 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6640 head = ((struct elf_nds32_dyn_relocs **)
6641 &elf_section_data (s)->local_dynrel);
6645 if (p == NULL || p->sec != sec)
6647 bfd_size_type amt = sizeof (*p);
6648 p = (struct elf_nds32_dyn_relocs *) bfd_alloc (dynobj, amt);
6659 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA
6660 || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
6661 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA)
6666 /* This relocation describes the C++ object vtable hierarchy.
6667 Reconstruct it for later use during GC. */
6668 case R_NDS32_RELA_GNU_VTINHERIT:
6669 case R_NDS32_GNU_VTINHERIT:
6670 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
6674 /* This relocation describes which C++ vtable entries are actually
6675 used. Record for later use during GC. */
6676 case R_NDS32_GNU_VTENTRY:
6677 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
6680 case R_NDS32_RELA_GNU_VTENTRY:
6681 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6690 /* Write VAL in uleb128 format to P, returning a pointer to the
6692 This code is copied from elf-attr.c. */
6695 write_uleb128 (bfd_byte *p, unsigned int val)
6710 static bfd_signed_vma
6711 calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
6712 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr,
6713 int *pic_ext_target)
6715 bfd_signed_vma foff;
6716 bfd_vma symval, addend;
6719 /* Get the value of the symbol referred to by the reloc. */
6720 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6722 Elf_Internal_Sym *isym;
6724 /* A local symbol. */
6725 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6727 if (isym->st_shndx == SHN_UNDEF)
6728 sym_sec = bfd_und_section_ptr;
6729 else if (isym->st_shndx == SHN_ABS)
6730 sym_sec = bfd_abs_section_ptr;
6731 else if (isym->st_shndx == SHN_COMMON)
6732 sym_sec = bfd_com_section_ptr;
6734 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6735 symval = isym->st_value + sym_sec->output_section->vma
6736 + sym_sec->output_offset;
6741 struct elf_link_hash_entry *h;
6744 /* An external symbol. */
6745 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6746 h = elf_sym_hashes (abfd)[indx];
6747 BFD_ASSERT (h != NULL);
6749 if (h->root.type != bfd_link_hash_defined
6750 && h->root.type != bfd_link_hash_defweak)
6751 /* This appears to be a reference to an undefined
6752 symbol. Just ignore it--it will be caught by the
6753 regular reloc processing. */
6755 owner = h->root.u.def.section->owner;
6756 if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC))
6757 *pic_ext_target = 1;
6759 if (h->root.u.def.section->flags & SEC_MERGE)
6761 sym_sec = h->root.u.def.section;
6762 symval = _bfd_merged_section_offset (abfd, &sym_sec,
6763 elf_section_data (sym_sec)->sec_info,
6764 h->root.u.def.value);
6765 symval = symval + sym_sec->output_section->vma
6766 + sym_sec->output_offset;
6769 symval = (h->root.u.def.value
6770 + h->root.u.def.section->output_section->vma
6771 + h->root.u.def.section->output_offset);
6774 addend = irel->r_addend;
6776 foff = (symval + addend
6777 - (irel->r_offset + sec->output_section->vma + sec->output_offset));
6782 calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info,
6783 Elf_Internal_Sym *isymbuf,
6784 Elf_Internal_Rela *irel,
6785 Elf_Internal_Shdr *symtab_hdr)
6789 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6791 Elf_Internal_Sym *isym;
6793 /* A local symbol. */
6794 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6796 if (isym->st_shndx == SHN_UNDEF)
6797 sym_sec = bfd_und_section_ptr;
6798 else if (isym->st_shndx == SHN_ABS)
6799 sym_sec = bfd_abs_section_ptr;
6800 else if (isym->st_shndx == SHN_COMMON)
6801 sym_sec = bfd_com_section_ptr;
6803 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6804 symval = isym->st_value + sym_sec->output_section->vma
6805 + sym_sec->output_offset;
6810 struct elf_link_hash_entry *h;
6811 struct elf_nds32_link_hash_table *htab;
6814 /* An external symbol. */
6815 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6816 h = elf_sym_hashes (abfd)[indx];
6817 BFD_ASSERT (h != NULL);
6818 htab = nds32_elf_hash_table (link_info);
6821 while (h->root.type == bfd_link_hash_indirect
6822 || h->root.type == bfd_link_hash_warning)
6823 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6825 if (h->plt.offset == (bfd_vma) - 1)
6827 if (h->root.type != bfd_link_hash_defined
6828 && h->root.type != bfd_link_hash_defweak)
6829 /* This appears to be a reference to an undefined
6830 * symbol. Just ignore it--it will be caught by the
6831 * regular reloc processing. */
6833 symval = (h->root.u.def.value
6834 + h->root.u.def.section->output_section->vma
6835 + h->root.u.def.section->output_offset);
6838 symval = splt->output_section->vma + h->plt.offset;
6844 static bfd_signed_vma
6845 calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info,
6846 Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel,
6847 Elf_Internal_Shdr *symtab_hdr)
6850 if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
6854 return foff - (irel->r_offset
6855 + sec->output_section->vma + sec->output_offset);
6858 /* Convert a 32-bit instruction to 16-bit one.
6859 INSN is the input 32-bit instruction, INSN16 is the output 16-bit
6860 instruction. If INSN_TYPE is not NULL, it the CGEN instruction
6861 type of INSN16. Return 1 if successful. */
6864 nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
6867 uint16_t insn16 = 0;
6869 unsigned long mach = bfd_get_mach (abfd);
6871 if (N32_SH5 (insn) != 0)
6874 switch (N32_SUB5 (insn))
6876 case N32_ALU1_ADD_SLLI:
6877 case N32_ALU1_ADD_SRLI:
6878 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6880 insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn),
6882 insn_type = NDS32_INSN_ADD333;
6884 else if (N32_IS_RT4 (insn))
6886 if (N32_RT5 (insn) == N32_RA5 (insn))
6887 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn));
6888 else if (N32_RT5 (insn) == N32_RB5 (insn))
6889 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn));
6890 insn_type = NDS32_INSN_ADD45;
6894 case N32_ALU1_SUB_SLLI:
6895 case N32_ALU1_SUB_SRLI:
6896 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6898 insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn),
6900 insn_type = NDS32_INSN_SUB333;
6902 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6904 insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn));
6905 insn_type = NDS32_INSN_SUB45;
6909 case N32_ALU1_AND_SLLI:
6910 case N32_ALU1_AND_SRLI:
6911 /* and $rt, $rt, $rb -> and33 for v3, v3m. */
6912 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6913 && N32_IS_RB3 (insn))
6915 if (N32_RT5 (insn) == N32_RA5 (insn))
6916 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn));
6917 else if (N32_RT5 (insn) == N32_RB5 (insn))
6918 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn));
6920 insn_type = NDS32_INSN_AND33;
6924 case N32_ALU1_XOR_SLLI:
6925 case N32_ALU1_XOR_SRLI:
6926 /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */
6927 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6928 && N32_IS_RB3 (insn))
6930 if (N32_RT5 (insn) == N32_RA5 (insn))
6931 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn));
6932 else if (N32_RT5 (insn) == N32_RB5 (insn))
6933 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn));
6935 insn_type = NDS32_INSN_XOR33;
6939 case N32_ALU1_OR_SLLI:
6940 case N32_ALU1_OR_SRLI:
6941 /* or $rt, $rt, $rb -> or33 for v3, v3m. */
6942 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6943 && N32_IS_RB3 (insn))
6945 if (N32_RT5 (insn) == N32_RA5 (insn))
6946 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn));
6947 else if (N32_RT5 (insn) == N32_RB5 (insn))
6948 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn));
6950 insn_type = NDS32_INSN_OR33;
6954 /* nor $rt, $ra, $ra -> not33 for v3, v3m. */
6955 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn)
6956 && N32_RA5 (insn) == N32_RB5 (insn))
6958 insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn));
6959 insn_type = NDS32_INSN_NOT33;
6963 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6965 insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn));
6966 insn_type = NDS32_INSN_SRAI45;
6971 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6973 insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn));
6974 insn_type = NDS32_INSN_SRLI45;
6979 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8)
6981 insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn),
6983 insn_type = NDS32_INSN_SLLI333;
6988 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6990 insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn));
6991 insn_type = NDS32_INSN_ZEH33;
6996 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6998 insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn));
6999 insn_type = NDS32_INSN_SEB33;
7004 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7006 insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn));
7007 insn_type = NDS32_INSN_SEH33;
7012 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7015 insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn));
7016 insn_type = NDS32_INSN_SLT45;
7021 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7024 insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn));
7025 insn_type = NDS32_INSN_SLTS45;
7030 if ((insn16 & 0x8000) == 0)
7036 *pinsn_type = insn_type;
7041 nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7044 uint16_t insn16 = 0;
7046 unsigned long mach = bfd_get_mach (abfd);
7048 /* TODO: bset, bclr, btgl, btst. */
7049 if (__GF (insn, 6, 4) != 0)
7052 switch (N32_IMMU (insn, 6))
7055 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7056 && N32_IS_RB3 (insn))
7058 if (N32_RT5 (insn) == N32_RA5 (insn))
7059 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn));
7060 else if (N32_RT5 (insn) == N32_RB5 (insn))
7061 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn));
7063 insn_type = NDS32_INSN_MUL33;
7067 if ((insn16 & 0x8000) == 0)
7073 *pinsn_type = insn_type;
7078 nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7082 uint16_t insn16 = 0;
7084 unsigned long mach = bfd_get_mach (abfd);
7086 /* Decode 32-bit instruction. */
7087 if (insn & 0x80000000)
7089 /* Not 32-bit insn. */
7093 op6 = N32_OP6 (insn);
7095 /* Convert it to 16-bit instruction. */
7099 if (IS_WITHIN_S (N32_IMM20S (insn), 5))
7101 insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn));
7102 insn_type = NDS32_INSN_MOVI55;
7104 else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16
7105 && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn))
7107 insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn),
7108 N32_IMM20S (insn) - 16);
7109 insn_type = NDS32_INSN_MOVPI45;
7114 if (N32_IMM15S (insn) == 0)
7116 /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp',
7117 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7119 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7121 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7122 insn_type = NDS32_INSN_MOV55;
7125 else if (N32_IMM15S (insn) > 0)
7127 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8)
7129 insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn),
7131 insn_type = NDS32_INSN_ADDI333;
7133 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7134 && N32_IMM15S (insn) < 32)
7136 insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn));
7137 insn_type = NDS32_INSN_ADDI45;
7139 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7140 && N32_RT5 (insn) == N32_RA5 (insn)
7141 && N32_IMM15S (insn) < 512)
7143 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7144 insn_type = NDS32_INSN_ADDI10_SP;
7146 else if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7147 && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256
7148 && (N32_IMM15S (insn) % 4 == 0))
7150 insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn),
7151 N32_IMM15S (insn) >> 2);
7152 insn_type = NDS32_INSN_ADDRI36_SP;
7158 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8)
7160 insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn),
7161 0 - N32_IMM15S (insn));
7162 insn_type = NDS32_INSN_SUBI333;
7164 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7165 && N32_IMM15S (insn) > -32)
7167 insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn),
7168 0 - N32_IMM15S (insn));
7169 insn_type = NDS32_INSN_SUBI45;
7171 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7172 && N32_RT5 (insn) == N32_RA5 (insn)
7173 && N32_IMM15S (insn) >= -512)
7175 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7176 insn_type = NDS32_INSN_ADDI10_SP;
7182 if (N32_IMM15S (insn) == 0)
7184 /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp',
7185 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7187 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7189 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7190 insn_type = NDS32_INSN_MOV55;
7196 if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7197 && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0)
7199 insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn));
7200 insn_type = NDS32_INSN_NEG33;
7205 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7207 if (N32_IMM15U (insn) == 1)
7209 insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn));
7210 insn_type = NDS32_INSN_XLSB33;
7212 else if (N32_IMM15U (insn) == 0x7ff)
7214 insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn));
7215 insn_type = NDS32_INSN_X11B33;
7217 else if (N32_IMM15U (insn) == 0xff)
7219 insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn));
7220 insn_type = NDS32_INSN_ZEB33;
7222 else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn)
7223 && N32_IMM15U (insn) < 256)
7225 int imm15u = N32_IMM15U (insn);
7227 if (__builtin_popcount (imm15u) == 1)
7230 int imm3u = __builtin_ctz (imm15u);
7232 insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u);
7233 insn_type = NDS32_INSN_BMSKI33;
7235 else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1)
7238 int imm3u = __builtin_ctz (imm15u + 1) - 1;
7240 insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u);
7241 insn_type = NDS32_INSN_FEXTI33;
7248 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7249 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7251 insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn));
7252 insn_type = NDS32_INSN_SLTI45;
7257 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7258 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7260 insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn));
7261 insn_type = NDS32_INSN_SLTSI45;
7266 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7268 insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn));
7269 insn_type = NDS32_INSN_LWI450;
7271 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7272 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7274 insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn),
7276 insn_type = NDS32_INSN_LWI333;
7278 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7279 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7281 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7282 insn_type = NDS32_INSN_LWI37;
7284 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7285 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7287 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn));
7288 insn_type = NDS32_INSN_LWI37_SP;
7290 else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8
7291 && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0)
7293 insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn),
7294 N32_IMM15S (insn) + 32);
7295 insn_type = NDS32_INSN_LWI45_FE;
7300 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7302 insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn));
7303 insn_type = NDS32_INSN_SWI450;
7305 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7306 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7308 insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn),
7310 insn_type = NDS32_INSN_SWI333;
7312 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7313 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7315 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7316 insn_type = NDS32_INSN_SWI37;
7318 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7319 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7321 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn));
7322 insn_type = NDS32_INSN_SWI37_SP;
7326 case N32_OP6_LWI_BI:
7327 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7328 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7330 insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7332 insn_type = NDS32_INSN_LWI333_BI;
7336 case N32_OP6_SWI_BI:
7337 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7338 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7340 insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7342 insn_type = NDS32_INSN_SWI333_BI;
7347 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7348 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7350 insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn),
7352 insn_type = NDS32_INSN_LHI333;
7357 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7358 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7360 insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn),
7362 insn_type = NDS32_INSN_SHI333;
7367 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7368 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7370 insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn),
7372 insn_type = NDS32_INSN_LBI333;
7377 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7378 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7380 insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn),
7382 insn_type = NDS32_INSN_SBI333;
7387 return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type);
7390 return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type);
7393 if (!IS_WITHIN_S (N32_IMM14S (insn), 8))
7396 if ((insn & __BIT (14)) == 0)
7399 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7400 && N32_RT5 (insn) != REG_R5)
7401 insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn));
7402 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7403 && N32_RA5 (insn) != REG_R5)
7404 insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn));
7405 insn_type = NDS32_INSN_BEQS38;
7411 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7412 && N32_RT5 (insn) != REG_R5)
7413 insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn));
7414 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7415 && N32_RA5 (insn) != REG_R5)
7416 insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn));
7417 insn_type = NDS32_INSN_BNES38;
7423 switch (N32_BR2_SUB (insn))
7426 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7428 insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn));
7429 insn_type = NDS32_INSN_BEQZ38;
7431 else if (N32_RT5 (insn) == REG_R15
7432 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7434 insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn));
7435 insn_type = NDS32_INSN_BEQZS8;
7440 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7442 insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn));
7443 insn_type = NDS32_INSN_BNEZ38;
7445 else if (N32_RT5 (insn) == REG_R15
7446 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7448 insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn));
7449 insn_type = NDS32_INSN_BNEZS8;
7453 case N32_BR2_IFCALL:
7454 if (IS_WITHIN_U (N32_IMM16S (insn), 9))
7456 insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn));
7457 insn_type = NDS32_INSN_IFCALL9;
7464 if ((insn & __BIT (24)) == 0)
7467 if (IS_WITHIN_S (N32_IMM24S (insn), 8))
7469 insn16 = N16_TYPE8 (J8, N32_IMM24S (insn));
7470 insn_type = NDS32_INSN_J8;
7476 if (__GF (insn, 8, 2) != 0)
7479 switch (N32_IMMU (insn, 5))
7482 if (N32_JREG_HINT (insn) == 0)
7485 insn16 = N16_TYPE5 (JR5, N32_RB5 (insn));
7486 insn_type = NDS32_INSN_JR5;
7488 else if (N32_JREG_HINT (insn) == 1)
7491 insn16 = N16_TYPE5 (RET5, N32_RB5 (insn));
7492 insn_type = NDS32_INSN_RET5;
7494 else if (N32_JREG_HINT (insn) == 3)
7496 /* ifret = mov55 $sp, $sp */
7497 insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP);
7498 insn_type = NDS32_INSN_IFRET;
7503 /* It's convertible when return rt5 is $lp and address
7504 translation is kept. */
7505 if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0)
7507 insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn));
7508 insn_type = NDS32_INSN_JRAL5;
7515 if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32)
7517 /* For v3, swid above 31 are used for ex9.it. */
7518 insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn));
7519 insn_type = NDS32_INSN_BREAK16;
7524 /* This instruction has no 16-bit variant. */
7529 /* Bit-15 of insn16 should be set for a valid instruction. */
7530 if ((insn16 & 0x8000) == 0)
7536 *pinsn_type = insn_type;
7541 special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16,
7542 Elf_Internal_Rela *reloc)
7544 uint16_t insn16 = 0;
7546 if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0
7547 || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16))
7550 if (!N32_IS_RT3 (insn))
7553 switch (N32_OP6 (insn))
7556 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7557 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7560 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7561 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7564 if (!IS_WITHIN_U (N32_IMM17S (insn), 7))
7567 if (__GF (insn, 17, 3) == 6)
7568 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn));
7569 else if (__GF (insn, 17, 3) == 7)
7570 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn));
7574 if ((insn16 & 0x8000) == 0)
7581 /* Convert a 16-bit instruction to 32-bit one.
7582 INSN16 it the input and PINSN it the point to output.
7583 Return non-zero on successful. Otherwise 0 is returned. */
7586 nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn)
7588 uint32_t insn = 0xffffffff;
7589 unsigned long mach = bfd_get_mach (abfd);
7591 /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */
7593 switch (__GF (insn16, 9, 6))
7595 case 0x4: /* add45 */
7596 insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16),
7599 case 0x5: /* sub45 */
7600 insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16),
7603 case 0x6: /* addi45 */
7604 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7605 N16_IMM5U (insn16));
7607 case 0x7: /* subi45 */
7608 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7609 -N16_IMM5U (insn16));
7611 case 0x8: /* srai45 */
7612 insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16),
7613 N16_IMM5U (insn16));
7615 case 0x9: /* srli45 */
7616 insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16),
7617 N16_IMM5U (insn16));
7619 case 0xa: /* slli333 */
7620 insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16),
7621 N16_IMM3U (insn16));
7623 case 0xc: /* add333 */
7624 insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16),
7627 case 0xd: /* sub333 */
7628 insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16),
7631 case 0xe: /* addi333 */
7632 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7633 N16_IMM3U (insn16));
7635 case 0xf: /* subi333 */
7636 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7637 -N16_IMM3U (insn16));
7639 case 0x10: /* lwi333 */
7640 insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16),
7641 N16_IMM3U (insn16));
7643 case 0x12: /* lhi333 */
7644 insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16),
7645 N16_IMM3U (insn16));
7647 case 0x13: /* lbi333 */
7648 insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16),
7649 N16_IMM3U (insn16));
7651 case 0x11: /* lwi333.bi */
7652 insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7653 N16_IMM3U (insn16));
7655 case 0x14: /* swi333 */
7656 insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16),
7657 N16_IMM3U (insn16));
7659 case 0x16: /* shi333 */
7660 insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16),
7661 N16_IMM3U (insn16));
7663 case 0x17: /* sbi333 */
7664 insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16),
7665 N16_IMM3U (insn16));
7667 case 0x15: /* swi333.bi */
7668 insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7669 N16_IMM3U (insn16));
7671 case 0x18: /* addri36.sp */
7672 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP,
7673 N16_IMM6U (insn16) << 2);
7675 case 0x19: /* lwi45.fe */
7676 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8,
7677 (N16_IMM5U (insn16) - 32));
7679 case 0x1a: /* lwi450 */
7680 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7682 case 0x1b: /* swi450 */
7683 insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7686 /* These are r15 implied instructions. */
7687 case 0x30: /* slts45 */
7688 insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7690 case 0x31: /* slt45 */
7691 insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7693 case 0x32: /* sltsi45 */
7694 insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7696 case 0x33: /* slti45 */
7697 insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7699 case 0x34: /* beqzs8, bnezs8 */
7700 if (insn16 & __BIT (8))
7701 insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16));
7703 insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16));
7706 case 0x35: /* break16, ex9.it */
7707 /* Only consider range of v3 break16. */
7708 insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK);
7711 case 0x3c: /* ifcall9 */
7712 insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16));
7714 case 0x3d: /* movpi45 */
7715 insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16);
7718 case 0x3f: /* MISC33 */
7719 switch (insn16 & 0x7)
7722 insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7725 insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16),
7729 insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16),
7733 insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16),
7737 insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16),
7741 insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16),
7748 switch (insn16 & 0x7)
7751 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff);
7754 insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7757 insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7760 insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7762 case 4: /* xlsb33 */
7763 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1);
7765 case 5: /* x11b33 */
7766 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff);
7768 case 6: /* bmski33 */
7769 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7770 1 << __GF (insn16, 3, 3));
7772 case 7: /* fexti33 */
7773 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7774 (1 << (__GF (insn16, 3, 3) + 1)) - 1);
7780 switch (__GF (insn16, 10, 5))
7782 case 0x0: /* mov55 or ifret16 */
7783 if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP
7784 && N16_RT5 (insn16) == N16_RA5 (insn16))
7785 insn = N32_JREG (JR, 0, 0, 0, 3);
7787 insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0);
7789 case 0x1: /* movi55 */
7790 insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16));
7792 case 0x1b: /* addi10s (V2) */
7793 insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16));
7797 switch (__GF (insn16, 11, 4))
7799 case 0x7: /* lwi37.fp/swi37.fp */
7800 if (insn16 & __BIT (7)) /* swi37.fp */
7801 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7803 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7805 case 0x8: /* beqz38 */
7806 insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7808 case 0x9: /* bnez38 */
7809 insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7811 case 0xa: /* beqs38/j8, implied r5 */
7812 if (N16_RT38 (insn16) == 5)
7813 insn = N32_JI (J, N16_IMM8S (insn16));
7815 insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7817 case 0xb: /* bnes38 and others */
7818 if (N16_RT38 (insn16) == 5)
7820 switch (__GF (insn16, 5, 3))
7823 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0);
7826 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1);
7829 insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0);
7831 case 2: /* ex9.it imm5 */
7832 /* ex9.it had no 32-bit variantl. */
7834 case 5: /* add5.pc */
7835 /* add5.pc had no 32-bit variantl. */
7840 insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7842 case 0xe: /* lwi37/swi37 */
7843 if (insn16 & (1 << 7)) /* swi37.sp */
7844 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7846 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7851 if (insn & 0x80000000)
7860 is_sda_access_insn (unsigned long insn)
7862 switch (N32_OP6 (insn))
7883 static unsigned long
7884 turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn)
7890 case R_NDS32_GOT_LO12:
7891 case R_NDS32_GOTOFF_LO12:
7892 case R_NDS32_PLTREL_LO12:
7893 case R_NDS32_PLT_GOTREL_LO12:
7894 case R_NDS32_LO12S0_RELA:
7895 switch (N32_OP6 (insn))
7899 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
7903 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19));
7907 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
7911 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
7916 case R_NDS32_LO12S1_RELA:
7917 switch (N32_OP6 (insn))
7921 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
7925 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18));
7929 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19));
7934 case R_NDS32_LO12S2_RELA:
7935 switch (N32_OP6 (insn))
7939 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
7943 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
7948 case R_NDS32_LO12S2_DP_RELA:
7949 case R_NDS32_LO12S2_SP_RELA:
7950 oinsn = (insn & 0x7ff07000) | (REG_GP << 15);
7960 /* Linker hasn't found the correct merge section for non-section symbol
7961 in relax time, this work is left to the function elf_link_input_bfd().
7962 So for non-section symbol, _bfd_merged_section_offset is also needed
7963 to find the correct symbol address. */
7966 nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym,
7967 asection **psec, Elf_Internal_Rela *rel)
7969 asection *sec = *psec;
7972 relocation = (sec->output_section->vma
7973 + sec->output_offset + sym->st_value);
7974 if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
7976 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7978 _bfd_merged_section_offset (abfd, psec,
7979 elf_section_data (sec)->sec_info,
7980 sym->st_value + rel->r_addend);
7983 _bfd_merged_section_offset (abfd, psec,
7984 elf_section_data (sec)->sec_info,
7985 sym->st_value) + rel->r_addend;
7989 /* If we have changed the section, and our original section is
7990 marked with SEC_EXCLUDE, it means that the original
7991 SEC_MERGE section has been completely subsumed in some
7992 other SEC_MERGE section. In this case, we need to leave
7993 some info around for --emit-relocs. */
7994 if ((sec->flags & SEC_EXCLUDE) != 0)
7995 sec->kept_section = *psec;
7998 rel->r_addend -= relocation;
7999 rel->r_addend += sec->output_section->vma + sec->output_offset;
8005 calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel,
8006 Elf_Internal_Sym *isymbuf,
8007 Elf_Internal_Shdr *symtab_hdr)
8009 bfd_signed_vma foff;
8010 bfd_vma symval, addend;
8011 Elf_Internal_Rela irel_fn;
8012 Elf_Internal_Sym *isym;
8015 /* Get the value of the symbol referred to by the reloc. */
8016 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
8018 /* A local symbol. */
8019 isym = isymbuf + ELF32_R_SYM (irel->r_info);
8021 if (isym->st_shndx == SHN_UNDEF)
8022 sym_sec = bfd_und_section_ptr;
8023 else if (isym->st_shndx == SHN_ABS)
8024 sym_sec = bfd_abs_section_ptr;
8025 else if (isym->st_shndx == SHN_COMMON)
8026 sym_sec = bfd_com_section_ptr;
8028 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
8029 memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela));
8030 symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn);
8031 addend = irel_fn.r_addend;
8036 struct elf_link_hash_entry *h;
8038 /* An external symbol. */
8039 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8040 h = elf_sym_hashes (abfd)[indx];
8041 BFD_ASSERT (h != NULL);
8043 while (h->root.type == bfd_link_hash_indirect
8044 || h->root.type == bfd_link_hash_warning)
8045 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8047 if (h->root.type != bfd_link_hash_defined
8048 && h->root.type != bfd_link_hash_defweak)
8049 /* This appears to be a reference to an undefined
8050 symbol. Just ignore it--it will be caught by the
8051 regular reloc processing. */
8054 if (h->root.u.def.section->flags & SEC_MERGE)
8056 sym_sec = h->root.u.def.section;
8057 symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data
8058 (sym_sec)->sec_info, h->root.u.def.value);
8059 symval = symval + sym_sec->output_section->vma
8060 + sym_sec->output_offset;
8063 symval = (h->root.u.def.value
8064 + h->root.u.def.section->output_section->vma
8065 + h->root.u.def.section->output_offset);
8066 addend = irel->r_addend;
8069 foff = symval + addend;
8075 calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info,
8076 Elf_Internal_Rela *irel,
8077 Elf_Internal_Shdr *symtab_hdr)
8080 bfd_vma *local_got_offsets;
8081 /* Get the value of the symbol referred to by the reloc. */
8082 struct elf_link_hash_entry *h;
8083 struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info);
8085 /* An external symbol. */
8086 symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8087 h = elf_sym_hashes (abfd)[symndx];
8088 while (h->root.type == bfd_link_hash_indirect
8089 || h->root.type == bfd_link_hash_warning)
8090 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8094 BFD_ASSERT (h != NULL);
8095 return htab->sgot->output_section->vma + htab->sgot->output_offset
8100 local_got_offsets = elf_local_got_offsets (abfd);
8101 BFD_ASSERT (local_got_offsets != NULL);
8102 return htab->sgot->output_section->vma + htab->sgot->output_offset
8103 + local_got_offsets[ELF32_R_SYM (irel->r_info)];
8106 /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */
8107 /* The check of h->root.type is passed. */
8111 is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED,
8112 asection *sec, Elf_Internal_Rela *rel)
8115 unsigned short insn16;
8117 if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG))
8119 contents = elf_section_data (sec)->this_hdr.contents;
8120 insn16 = bfd_getb16 (contents + rel->r_offset);
8121 if (insn16 == NDS32_NOP16)
8126 /* It checks whether the instruction could be converted to
8127 16-bit form and returns the converted one.
8129 `internal_relocs' is supposed to be sorted. */
8132 is_convert_32_to_16 (bfd *abfd, asection *sec,
8133 Elf_Internal_Rela *reloc,
8134 Elf_Internal_Rela *internal_relocs,
8135 Elf_Internal_Rela *irelend,
8138 #define NORMAL_32_TO_16 (1 << 0)
8139 #define SPECIAL_32_TO_16 (1 << 1)
8140 bfd_byte *contents = NULL;
8144 Elf_Internal_Rela *pc_rel;
8145 int pic_ext_target = 0;
8146 Elf_Internal_Shdr *symtab_hdr;
8147 Elf_Internal_Sym *isymbuf = NULL;
8151 if (reloc->r_offset + 4 > sec->size)
8154 offset = reloc->r_offset;
8156 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
8158 insn = bfd_getb32 (contents + offset);
8160 if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL))
8161 convert_type = NORMAL_32_TO_16;
8162 else if (special_convert_32_to_16 (insn, insn16, reloc))
8163 convert_type = SPECIAL_32_TO_16;
8167 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8168 if (!nds32_get_local_syms (abfd, sec, &isymbuf))
8171 /* Find the first relocation of the same relocation-type,
8172 so we iteratie them forward. */
8174 while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset)
8177 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8179 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8180 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8181 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA
8182 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8184 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
8186 if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1
8191 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8193 /* movi => movi55 */
8194 mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf,
8196 /* mem_addr is unsigned, but the value should
8197 be between [-16, 15]. */
8198 if ((mem_addr + 0x10) >> 5)
8202 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20)
8203 || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12))
8205 /* It never happen movi to movi55 for R_NDS32_TLS_LE_20,
8206 because it can be relaxed to addi for TLS_LE_ADD. */
8209 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8210 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8211 && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG)
8212 && convert_type == SPECIAL_32_TO_16)
8215 We've selected a best fp-base for this access, so we can
8216 always resolve it anyway. Do nothing. */
8219 else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE
8220 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT))
8221 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY)
8222 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16))
8223 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE)
8224 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA)))
8226 /* Prevent unresolved addi instruction translate
8227 to addi45 or addi333. */
8230 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8232 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
8234 if (off >= ACCURATE_U9BIT_S1 || off <= 0)
8244 nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents,
8245 Elf_Internal_Rela *reloc,
8246 Elf_Internal_Rela *internal_relocs,
8247 Elf_Internal_Rela *irelend,
8248 unsigned short insn16)
8250 Elf_Internal_Rela *pc_rel;
8253 offset = reloc->r_offset;
8254 bfd_putb16 (insn16, contents + offset);
8255 /* Find the first relocation of the same relocation-type,
8256 so we iteratie them forward. */
8258 while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset)
8261 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8263 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8264 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8265 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA)
8268 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA);
8270 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8272 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL);
8273 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8275 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA);
8276 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8277 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8279 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA);
8280 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8282 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA);
8286 /* Find a relocation of type specified by `reloc_type'
8287 of the same r_offset with reloc.
8288 If not found, return irelend.
8290 Assuming relocations are sorted by r_offset,
8291 we find the relocation from `reloc' backward untill relocs,
8292 or find it from `reloc' forward untill irelend. */
8294 static Elf_Internal_Rela *
8295 find_relocs_at_address (Elf_Internal_Rela *reloc,
8296 Elf_Internal_Rela *relocs,
8297 Elf_Internal_Rela *irelend,
8298 enum elf_nds32_reloc_type reloc_type)
8300 Elf_Internal_Rela *rel_t;
8302 /* Find backward. */
8304 rel_t >= relocs && rel_t->r_offset == reloc->r_offset;
8306 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8309 /* We didn't find it backward. Try find it forward. */
8311 rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8313 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8319 /* Find a relocation of specified type and offset.
8320 `reloc' is just a refence point to find a relocation at specified offset.
8321 If not found, return irelend.
8323 Assuming relocations are sorted by r_offset,
8324 we find the relocation from `reloc' backward untill relocs,
8325 or find it from `reloc' forward untill irelend. */
8327 static Elf_Internal_Rela *
8328 find_relocs_at_address_addr (Elf_Internal_Rela *reloc,
8329 Elf_Internal_Rela *relocs,
8330 Elf_Internal_Rela *irelend,
8331 enum elf_nds32_reloc_type reloc_type,
8334 Elf_Internal_Rela *rel_t = NULL;
8336 /* First, we try to find a relocation of offset `offset_p',
8337 and then we use find_relocs_at_address to find specific type. */
8339 if (reloc->r_offset > offset_p)
8341 /* Find backward. */
8343 rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--)
8346 else if (reloc->r_offset < offset_p)
8350 rel_t < irelend && rel_t->r_offset < offset_p; rel_t++)
8357 if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p)
8360 return find_relocs_at_address (rel_t, relocs, irelend, reloc_type);
8364 nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc,
8365 Elf_Internal_Rela *internal_relocs,
8366 Elf_Internal_Rela *irelend,
8367 unsigned char reloc_type)
8369 Elf_Internal_Rela *rel_t;
8372 rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset;
8374 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8376 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8377 && rel_t->r_addend == reloc->r_addend)
8382 for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8384 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8386 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8387 && rel_t->r_addend == reloc->r_addend)
8395 typedef struct nds32_elf_blank nds32_elf_blank_t;
8396 struct nds32_elf_blank
8398 /* Where the blank begins. */
8400 /* The size of the blank. */
8402 /* The accumulative size before this blank. */
8404 nds32_elf_blank_t *next;
8405 nds32_elf_blank_t *prev;
8408 static nds32_elf_blank_t *blank_free_list = NULL;
8410 static nds32_elf_blank_t *
8411 create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p)
8413 nds32_elf_blank_t *blank_t;
8415 if (blank_free_list)
8417 blank_t = blank_free_list;
8418 blank_free_list = blank_free_list->next;
8421 blank_t = bfd_malloc (sizeof (nds32_elf_blank_t));
8423 if (blank_t == NULL)
8426 blank_t->offset = offset_p;
8427 blank_t->size = size_p;
8428 blank_t->total_size = 0;
8429 blank_t->next = NULL;
8430 blank_t->prev = NULL;
8436 remove_nds32_elf_blank (nds32_elf_blank_t *blank_p)
8438 if (blank_free_list)
8440 blank_free_list->prev = blank_p;
8441 blank_p->next = blank_free_list;
8444 blank_p->next = NULL;
8446 blank_p->prev = NULL;
8447 blank_free_list = blank_p;
8451 clean_nds32_elf_blank (void)
8453 nds32_elf_blank_t *blank_t;
8455 while (blank_free_list)
8457 blank_t = blank_free_list;
8458 blank_free_list = blank_free_list->next;
8463 static nds32_elf_blank_t *
8464 search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr)
8466 nds32_elf_blank_t *blank_t;
8472 while (blank_t && addr < blank_t->offset)
8473 blank_t = blank_t->prev;
8474 while (blank_t && blank_t->next && addr >= blank_t->next->offset)
8475 blank_t = blank_t->next;
8481 get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8484 nds32_elf_blank_t *blank_t;
8486 blank_t = search_nds32_elf_blank (*blank_p, addr);
8493 if (addr < blank_t->offset + blank_t->size)
8494 return blank_t->total_size + (addr - blank_t->offset);
8496 return blank_t->total_size + blank_t->size;
8500 insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len)
8502 nds32_elf_blank_t *blank_t, *blank_t2;
8506 *blank_p = create_nds32_elf_blank (addr, len);
8507 return *blank_p ? TRUE : FALSE;
8510 blank_t = search_nds32_elf_blank (*blank_p, addr);
8512 if (blank_t == NULL)
8514 blank_t = create_nds32_elf_blank (addr, len);
8517 while ((*blank_p)->prev != NULL)
8518 *blank_p = (*blank_p)->prev;
8519 blank_t->next = *blank_p;
8520 (*blank_p)->prev = blank_t;
8521 (*blank_p) = blank_t;
8525 if (addr < blank_t->offset + blank_t->size)
8527 if (addr > blank_t->offset + blank_t->size)
8528 blank_t->size = addr - blank_t->offset;
8532 blank_t2 = create_nds32_elf_blank (addr, len);
8537 blank_t->next->prev = blank_t2;
8538 blank_t2->next = blank_t->next;
8540 blank_t2->prev = blank_t;
8541 blank_t->next = blank_t2;
8542 *blank_p = blank_t2;
8549 insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8552 nds32_elf_blank_t *blank_t;
8554 if (!insert_nds32_elf_blank (blank_p, addr, len))
8561 blank_t->total_size = 0;
8562 blank_t = blank_t->next;
8567 blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size;
8568 blank_t = blank_t->next;
8575 calc_nds32_blank_total (nds32_elf_blank_t *blank_p)
8577 nds32_elf_blank_t *blank_t;
8578 bfd_vma total_size = 0;
8584 while (blank_t->prev)
8585 blank_t = blank_t->prev;
8588 blank_t->total_size = total_size;
8589 total_size += blank_t->size;
8590 blank_t = blank_t->next;
8595 nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec,
8596 nds32_elf_blank_t *blank_p)
8598 Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */
8599 Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */
8600 Elf_Internal_Sym *isymend; /* Symbol entry iterator. */
8601 unsigned int sec_shndx; /* The section the be relaxed. */
8602 bfd_byte *contents; /* Contents data of iterating section. */
8603 Elf_Internal_Rela *internal_relocs;
8604 Elf_Internal_Rela *irel;
8605 Elf_Internal_Rela *irelend;
8606 struct elf_link_hash_entry **sym_hashes;
8607 struct elf_link_hash_entry **end_hashes;
8608 unsigned int symcount;
8610 nds32_elf_blank_t *blank_t;
8611 nds32_elf_blank_t *blank_t2;
8612 nds32_elf_blank_t *blank_head;
8614 blank_head = blank_t = blank_p;
8615 while (blank_head->prev != NULL)
8616 blank_head = blank_head->prev;
8617 while (blank_t->next != NULL)
8618 blank_t = blank_t->next;
8620 if (blank_t->offset + blank_t->size <= sec->size)
8622 blank_t->next = create_nds32_elf_blank (sec->size + 4, 0);
8623 blank_t->next->prev = blank_t;
8625 if (blank_head->offset > 0)
8627 blank_head->prev = create_nds32_elf_blank (0, 0);
8628 blank_head->prev->next = blank_head;
8629 blank_head = blank_head->prev;
8632 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
8634 /* The deletion must stop at the next ALIGN reloc for an alignment
8635 power larger than the number of bytes we are deleting. */
8637 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8638 if (!nds32_get_local_syms (abfd, sec, &isym))
8643 isym = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8644 symtab_hdr->sh_info, 0, NULL, NULL, NULL);
8645 symtab_hdr->contents = (bfd_byte *) isym;
8648 if (isym == NULL || symtab_hdr->sh_info == 0)
8651 blank_t = blank_head;
8652 calc_nds32_blank_total (blank_head);
8654 for (sect = abfd->sections; sect != NULL; sect = sect->next)
8656 /* Adjust all the relocs. */
8658 /* Relocations MUST be kept in memory, because relaxation adjust them. */
8659 internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL,
8660 TRUE /* keep_memory */);
8661 irelend = internal_relocs + sect->reloc_count;
8663 blank_t = blank_head;
8664 blank_t2 = blank_head;
8666 if (!(sect->flags & SEC_RELOC))
8669 nds32_get_section_contents (abfd, sect, &contents, TRUE);
8671 for (irel = internal_relocs; irel < irelend; irel++)
8675 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8
8676 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32
8677 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8679 unsigned long val = 0;
8681 long before, between;
8684 switch (ELF32_R_TYPE (irel->r_info))
8687 offset = bfd_get_8 (abfd, contents + irel->r_offset);
8689 case R_NDS32_DIFF16:
8690 offset = bfd_get_16 (abfd, contents + irel->r_offset);
8692 case R_NDS32_DIFF32:
8693 val = bfd_get_32 (abfd, contents + irel->r_offset);
8694 /* Get the signed bit and mask for the high part. The
8695 gcc will alarm when right shift 32-bit since the
8696 type size of long may be 32-bit. */
8697 mask = 0 - (val >> 31);
8699 offset = (val | (mask - 0xffffffff));
8708 0 |encoded in location|
8709 |------------|-------------------|---------
8711 -- before ---| *****************
8712 --------------------- between ---|
8714 We only care how much data are relax between DIFF,
8717 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8718 between = get_nds32_elf_blank_total (&blank_t,
8719 irel->r_addend + offset, 0);
8720 if (between == before)
8721 goto done_adjust_diff;
8723 switch (ELF32_R_TYPE (irel->r_info))
8726 bfd_put_8 (abfd, offset - (between - before),
8727 contents + irel->r_offset);
8729 case R_NDS32_DIFF16:
8730 bfd_put_16 (abfd, offset - (between - before),
8731 contents + irel->r_offset);
8733 case R_NDS32_DIFF32:
8734 bfd_put_32 (abfd, offset - (between - before),
8735 contents + irel->r_offset);
8739 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128
8740 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8743 unsigned int len = 0;
8744 unsigned long before, between;
8747 val = read_unsigned_leb128 (abfd, contents + irel->r_offset,
8750 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8751 between = get_nds32_elf_blank_total (&blank_t,
8752 irel->r_addend + val, 0);
8753 if (between == before)
8754 goto done_adjust_diff;
8756 p = contents + irel->r_offset;
8758 memset (p, 0x80, len);
8760 p = write_uleb128 (p, val - (between - before)) - 1;
8768 raddr = irel->r_offset;
8769 irel->r_offset -= get_nds32_elf_blank_total (&blank_t2,
8772 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
8774 if (blank_t2 && blank_t2->next
8775 && (blank_t2->offset > raddr
8776 || blank_t2->next->offset <= raddr))
8778 (_("%B: %s\n"), abfd,
8779 "Error: search_nds32_elf_blank reports wrong node");
8781 /* Mark reloc in deleted portion as NONE.
8782 For some relocs like R_NDS32_LABEL that doesn't modify the
8783 content in the section. R_NDS32_LABEL doesn't belong to the
8784 instruction in the section, so we should preserve it. */
8785 if (raddr >= blank_t2->offset
8786 && raddr < blank_t2->offset + blank_t2->size
8787 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL
8788 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN
8789 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
8790 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
8791 && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND
8792 && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND)
8794 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
8800 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE
8801 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
8802 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
8805 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info
8806 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx
8807 && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION)
8809 if (irel->r_addend <= sec->size)
8811 get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1);
8816 /* Adjust the local symbols defined in this section. */
8817 blank_t = blank_head;
8818 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
8820 if (isym->st_shndx == sec_shndx)
8822 if (isym->st_value <= sec->size)
8825 bfd_vma orig_addr = isym->st_value;
8827 ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1);
8828 isym->st_value -= ahead;
8830 /* Adjust function size. */
8831 if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC
8832 && isym->st_size > 0)
8834 get_nds32_elf_blank_total
8835 (&blank_t, orig_addr + isym->st_size, 0) - ahead;
8840 /* Now adjust the global symbols defined in this section. */
8841 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
8842 - symtab_hdr->sh_info);
8843 sym_hashes = elf_sym_hashes (abfd);
8844 end_hashes = sym_hashes + symcount;
8845 blank_t = blank_head;
8846 for (; sym_hashes < end_hashes; sym_hashes++)
8848 struct elf_link_hash_entry *sym_hash = *sym_hashes;
8850 if ((sym_hash->root.type == bfd_link_hash_defined
8851 || sym_hash->root.type == bfd_link_hash_defweak)
8852 && sym_hash->root.u.def.section == sec)
8854 if (sym_hash->root.u.def.value <= sec->size)
8857 bfd_vma orig_addr = sym_hash->root.u.def.value;
8859 ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1);
8860 sym_hash->root.u.def.value -= ahead;
8862 /* Adjust function size. */
8863 if (sym_hash->type == STT_FUNC)
8865 get_nds32_elf_blank_total
8866 (&blank_t, orig_addr + sym_hash->size, 0) - ahead;
8872 contents = elf_section_data (sec)->this_hdr.contents;
8873 blank_t = blank_head;
8874 while (blank_t->next)
8876 /* Actually delete the bytes. */
8878 /* If current blank is the last blank overlap with current section,
8879 go to finish process. */
8880 if (sec->size <= (blank_t->next->offset))
8883 memmove (contents + blank_t->offset - blank_t->total_size,
8884 contents + blank_t->offset + blank_t->size,
8885 blank_t->next->offset - (blank_t->offset + blank_t->size));
8887 blank_t = blank_t->next;
8890 if (sec->size > (blank_t->offset + blank_t->size))
8892 /* There are remaining code between blank and section boundary.
8893 Move the remaining code to appropriate location. */
8894 memmove (contents + blank_t->offset - blank_t->total_size,
8895 contents + blank_t->offset + blank_t->size,
8896 sec->size - (blank_t->offset + blank_t->size));
8897 sec->size -= blank_t->total_size + blank_t->size;
8900 /* This blank is not entirely included in the section,
8901 reduce the section size by only part of the blank size. */
8902 sec->size -= blank_t->total_size + (sec->size - blank_t->offset);
8906 blank_t = blank_head;
8907 blank_head = blank_head->next;
8908 remove_nds32_elf_blank (blank_t);
8914 /* Get the contents of a section. */
8917 nds32_get_section_contents (bfd *abfd, asection *sec,
8918 bfd_byte **contents_p, bfd_boolean cache)
8920 /* Get the section contents. */
8921 if (elf_section_data (sec)->this_hdr.contents != NULL)
8922 *contents_p = elf_section_data (sec)->this_hdr.contents;
8925 if (!bfd_malloc_and_get_section (abfd, sec, contents_p))
8928 elf_section_data (sec)->this_hdr.contents = *contents_p;
8934 /* Get the contents of the internal symbol of abfd. */
8937 nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED,
8938 Elf_Internal_Sym **isymbuf_p)
8940 Elf_Internal_Shdr *symtab_hdr;
8941 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8943 /* Read this BFD's local symbols if we haven't done so already. */
8944 if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0)
8946 *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents;
8947 if (*isymbuf_p == NULL)
8949 *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8950 symtab_hdr->sh_info, 0,
8952 if (*isymbuf_p == NULL)
8956 symtab_hdr->contents = (bfd_byte *) (*isymbuf_p);
8961 /* Range of small data. */
8962 static bfd_vma sdata_range[2][2];
8963 static bfd_vma const sdata_init_range[2] =
8964 { ACCURATE_12BIT_S1, ACCURATE_19BIT };
8967 nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED,
8968 bfd_byte *contents, bfd_vma addr)
8970 unsigned long insn = bfd_getb32 (contents + addr);
8972 if (insn & 0x80000000)
8978 /* Set the gp relax range. We have to measure the safe range
8979 to do gp relaxation. */
8982 relax_range_measurement (bfd *abfd)
8984 asection *sec_f, *sec_b;
8985 /* For upper bound. */
8986 bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize;
8988 static int decide_relax_range = 0;
8990 int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]);
8992 if (decide_relax_range)
8994 decide_relax_range = 1;
8996 if (sda_rela_sec == NULL)
8998 /* Since there is no data sections, we assume the range is page size. */
8999 for (i = 0; i < range_number; i++)
9001 sdata_range[i][0] = sdata_init_range[i] - 0x1000;
9002 sdata_range[i][1] = sdata_init_range[i] - 0x1000;
9007 /* Get the biggest alignment power after the gp located section. */
9008 sec_f = sda_rela_sec->output_section;
9009 sec_b = sec_f->next;
9011 while (sec_b != NULL)
9013 if ((unsigned)(1 << sec_b->alignment_power) > align)
9014 align = (1 << sec_b->alignment_power);
9015 sec_b = sec_b->next;
9018 /* I guess we can not determine the section before
9019 gp located section, so we assume the align is max page size. */
9020 for (i = 0; i < range_number; i++)
9022 sdata_range[i][1] = sdata_init_range[i] - align;
9023 BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]);
9024 sdata_range[i][0] = sdata_init_range[i] - maxpgsz;
9025 BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]);
9029 /* These are macros used to check flags encoded in r_addend.
9030 They are only used by nds32_elf_relax_section (). */
9031 #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff)
9032 #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000)
9033 #define IS_OPTIMIZE(addend) ((addend) & 0x40000000)
9034 #define IS_16BIT_ON(addend) ((addend) & 0x20000000)
9036 /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */
9039 nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9040 Elf_Internal_Rela *internal_relocs, int *insn_len,
9041 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9042 Elf_Internal_Shdr *symtab_hdr)
9044 /* There are 3 variations for LONGCALL1
9045 case 4-4-2; 16-bit on, optimize off or optimize for space
9046 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9047 ori ta, ta, lo12(symbol) ; LO12S0
9050 case 4-4-4; 16-bit off, optimize don't care
9051 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9052 ori ta, ta, lo12(symbol) ; LO12S0
9055 case 4-4-4; 16-bit on, optimize for speed
9056 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9057 ori ta, ta, lo12(symbol) ; LO12S0
9059 Check code for -mlong-calls output. */
9061 /* Get the reloc for the address from which the register is
9062 being loaded. This reloc will tell us which function is
9063 actually being called. */
9066 int seq_len; /* Original length of instruction sequence. */
9068 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9069 int pic_ext_target = 0;
9070 bfd_signed_vma foff;
9073 irelend = internal_relocs + sec->reloc_count;
9074 seq_len = GET_SEQ_LEN (irel->r_addend);
9075 laddr = irel->r_offset;
9076 *insn_len = seq_len;
9078 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9079 R_NDS32_HI20_RELA, laddr);
9080 lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9081 R_NDS32_LO12S0_ORI_RELA,
9084 if (hi_irelfn == irelend || lo_irelfn == irelend)
9087 ("%B: warning: R_NDS32_LONGCALL1 points to unrecognized"
9088 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9092 /* Get the value of the symbol referred to by the reloc. */
9093 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9096 /* This condition only happened when symbol is undefined. */
9097 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9098 || foff >= CONSERVATIVE_24BIT_S1)
9101 /* Relax to: jal symbol; 25_PCREL */
9102 /* For simplicity of coding, we are going to modify the section
9103 contents, the section relocs, and the BFD symbol table. We
9104 must tell the rest of the code not to free up this
9105 information. It would be possible to instead create a table
9106 of changes which have to be made, as is done in coff-mips.c;
9107 that would be more work, but would require less memory when
9108 the linker is run. */
9110 /* Replace the long call with a jal. */
9111 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9112 R_NDS32_25_PCREL_RELA);
9113 irel->r_addend = hi_irelfn->r_addend;
9115 /* We don't resolve this here but resolve it in relocate_section. */
9117 bfd_putb32 (insn, contents + irel->r_offset);
9120 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9122 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9127 insn16 = NDS32_NOP16;
9128 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9130 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9131 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9137 #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000)
9138 /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */
9141 nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9142 Elf_Internal_Rela *internal_relocs, int *insn_len,
9143 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9144 Elf_Internal_Shdr *symtab_hdr)
9146 /* bltz rt, .L1 ; LONGCALL2
9147 jal symbol ; 25_PCREL
9150 /* Get the reloc for the address from which the register is
9151 being loaded. This reloc will tell us which function is
9152 actually being called. */
9156 Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend;
9157 int pic_ext_target = 0;
9158 bfd_signed_vma foff;
9160 irelend = internal_relocs + sec->reloc_count;
9161 laddr = irel->r_offset;
9163 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9164 R_NDS32_25_PCREL_RELA, laddr + 4);
9166 if (i1_irelfn == irelend)
9169 ("%B: warning: R_NDS32_LONGCALL2 points to unrecognized"
9170 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9174 insn = bfd_getb32 (contents + laddr);
9176 /* Get the value of the symbol referred to by the reloc. */
9177 foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr,
9180 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9181 || foff >= CONSERVATIVE_16BIT_S1)
9184 /* Relax to bgezal rt, label ; 17_PCREL
9185 or bltzal rt, label ; 17_PCREL */
9187 /* Convert to complimentary conditional call. */
9188 insn = CONVERT_CONDITION_CALL (insn);
9190 /* For simplicity of coding, we are going to modify the section
9191 contents, the section relocs, and the BFD symbol table. We
9192 must tell the rest of the code not to free up this
9193 information. It would be possible to instead create a table
9194 of changes which have to be made, as is done in coff-mips.c;
9195 that would be more work, but would require less memory when
9196 the linker is run. */
9198 /* Clean unnessary relocations. */
9200 ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE);
9202 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9203 R_NDS32_17_PCREL_RELA, laddr);
9204 if (cond_irelfn != irelend)
9205 cond_irelfn->r_info =
9206 ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE);
9208 /* Replace the long call with a bgezal. */
9209 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info),
9210 R_NDS32_17_PCREL_RELA);
9211 irel->r_addend = i1_irelfn->r_addend;
9213 bfd_putb32 (insn, contents + irel->r_offset);
9219 /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */
9222 nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9223 Elf_Internal_Rela *internal_relocs, int *insn_len,
9224 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9225 Elf_Internal_Shdr *symtab_hdr)
9227 /* There are 3 variations for LONGCALL3
9228 case 4-4-4-2; 16-bit on, optimize off or optimize for space
9229 bltz rt, $1 ; LONGCALL3
9230 sethi ta, hi20(symbol) ; HI20
9231 ori ta, ta, lo12(symbol) ; LO12S0
9235 case 4-4-4-4; 16-bit off, optimize don't care
9236 bltz rt, $1 ; LONGCALL3
9237 sethi ta, hi20(symbol) ; HI20
9238 ori ta, ta, lo12(symbol) ; LO12S0
9242 case 4-4-4-4; 16-bit on, optimize for speed
9243 bltz rt, $1 ; LONGCALL3
9244 sethi ta, hi20(symbol) ; HI20
9245 ori ta, ta, lo12(symbol) ; LO12S0
9249 /* Get the reloc for the address from which the register is
9250 being loaded. This reloc will tell us which function is
9251 actually being called. */
9254 int seq_len; /* Original length of instruction sequence. */
9256 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9257 int pic_ext_target = 0;
9258 bfd_signed_vma foff;
9261 irelend = internal_relocs + sec->reloc_count;
9262 seq_len = GET_SEQ_LEN (irel->r_addend);
9263 laddr = irel->r_offset;
9264 *insn_len = seq_len;
9267 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9268 R_NDS32_HI20_RELA, laddr + 4);
9270 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9271 R_NDS32_LO12S0_ORI_RELA, laddr + 8);
9273 if (hi_irelfn == irelend || lo_irelfn == irelend)
9276 ("%B: warning: R_NDS32_LONGCALL3 points to unrecognized"
9277 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9281 /* Get the value of the symbol referred to by the reloc. */
9282 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9285 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9286 || foff >= CONSERVATIVE_24BIT_S1)
9289 insn = bfd_getb32 (contents + laddr);
9290 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
9292 /* Relax to bgezal rt, label ; 17_PCREL
9293 or bltzal rt, label ; 17_PCREL */
9295 /* Convert to complimentary conditional call. */
9296 insn = CONVERT_CONDITION_CALL (insn);
9297 bfd_putb32 (insn, contents + irel->r_offset);
9301 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9303 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9305 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9308 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9309 R_NDS32_17_PCREL_RELA, laddr);
9310 if (cond_irelfn != irelend)
9312 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9313 R_NDS32_17_PCREL_RELA);
9314 cond_irelfn->r_addend = hi_irelfn->r_addend;
9319 insn16 = NDS32_NOP16;
9320 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9321 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9323 hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9327 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
9329 /* Relax to the following instruction sequence
9330 bltz rt, $1 ; LONGCALL2
9331 jal symbol ; 25_PCREL
9335 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9337 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9338 R_NDS32_25_PCREL_RELA);
9340 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2);
9343 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9347 insn16 = NDS32_NOP16;
9348 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9350 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9351 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9358 /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */
9361 nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9362 Elf_Internal_Rela *internal_relocs, int *insn_len,
9363 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9364 Elf_Internal_Shdr *symtab_hdr)
9366 /* There are 3 variations for LONGJUMP1
9367 case 4-4-2; 16-bit bit on, optimize off or optimize for space
9368 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9369 ori ta, ta, lo12(symbol) ; LO12S0
9372 case 4-4-4; 16-bit off, optimize don't care
9373 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9374 ori ta, ta, lo12(symbol) ; LO12S0
9377 case 4-4-4; 16-bit on, optimize for speed
9378 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9379 ori ta, ta, lo12(symbol) ; LO12S0
9382 /* Get the reloc for the address from which the register is
9383 being loaded. This reloc will tell us which function is
9384 actually being called. */
9387 int seq_len; /* Original length of instruction sequence. */
9388 int insn16_on; /* 16-bit on/off. */
9390 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9391 int pic_ext_target = 0;
9392 bfd_signed_vma foff;
9394 unsigned long reloc;
9396 irelend = internal_relocs + sec->reloc_count;
9397 seq_len = GET_SEQ_LEN (irel->r_addend);
9398 laddr = irel->r_offset;
9399 *insn_len = seq_len;
9400 insn16_on = IS_16BIT_ON (irel->r_addend);
9403 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9404 R_NDS32_HI20_RELA, laddr);
9406 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9407 R_NDS32_LO12S0_ORI_RELA, laddr + 4);
9408 if (hi_irelfn == irelend || lo_irelfn == irelend)
9411 ("%B: warning: R_NDS32_LONGJUMP1 points to unrecognized"
9412 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9416 /* Get the value of the symbol referred to by the reloc. */
9417 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9420 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
9421 || foff < -CONSERVATIVE_24BIT_S1)
9424 if (insn16_on && foff >= -ACCURATE_8BIT_S1
9425 && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2))
9428 /* 16-bit on, but not optimized for speed. */
9429 reloc = R_NDS32_9_PCREL_RELA;
9431 bfd_putb16 (insn16, contents + irel->r_offset);
9434 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9439 reloc = R_NDS32_25_PCREL_RELA;
9441 bfd_putb32 (insn, contents + irel->r_offset);
9444 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16);
9449 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9451 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9453 if ((seq_len & 0x2) && ((*insn_len & 2) == 0))
9455 insn16 = NDS32_NOP16;
9456 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9458 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9460 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9466 /* Revert condition branch. This function does not check if the input
9467 instruction is condition branch or not. */
9470 nds32_elf_convert_branch (uint16_t insn16, uint32_t insn,
9471 uint16_t *re_insn16, uint32_t *re_insn)
9473 uint32_t comp_insn = 0;
9474 uint16_t comp_insn16 = 0;
9478 if (N32_OP6 (insn) == N32_OP6_BR1)
9481 comp_insn = (insn ^ 0x4000) & 0xffffc000;
9482 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5)
9484 /* Insn can be contracted to 16-bit implied r5. */
9486 (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38;
9487 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9490 else if (N32_OP6 (insn) == N32_OP6_BR3)
9492 /* bnec $ta, imm11, label. */
9493 comp_insn = (insn ^ 0x80000) & 0xffffff00;
9497 comp_insn = (insn ^ 0x10000) & 0xffffc000;
9498 if (N32_BR2_SUB (insn) == N32_BR2_BEQZ
9499 || N32_BR2_SUB (insn) == N32_BR2_BNEZ)
9501 if (N32_IS_RT3 (insn))
9503 /* Insn can be contracted to 16-bit. */
9505 (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38;
9506 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9508 else if (N32_RT5 (insn) == REG_R15)
9510 /* Insn can be contracted to 16-bit. */
9512 (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38;
9519 switch ((insn16 & 0xf000) >> 12)
9522 /* beqz38 or bnez38 */
9523 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9524 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ;
9525 comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20;
9529 /* beqs38 or bnes38 */
9530 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9531 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ;
9532 comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20)
9537 /* beqzS8 or bnezS8 */
9538 comp_insn16 = (insn16 ^ 0x0100) & 0xff00;
9539 comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ;
9540 comp_insn |= REG_R15 << 20;
9547 if (comp_insn && re_insn)
9548 *re_insn = comp_insn;
9549 if (comp_insn16 && re_insn16)
9550 *re_insn16 = comp_insn16;
9553 /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */
9556 nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9557 Elf_Internal_Rela *internal_relocs, int *insn_len,
9558 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9559 Elf_Internal_Shdr *symtab_hdr)
9561 /* There are 3 variations for LONGJUMP2
9562 case 2-4; 1st insn convertible, 16-bit on,
9563 optimize off or optimize for space
9564 bnes38 rt, ra, $1 ; LONGJUMP2
9568 case 4-4; 1st insn not convertible
9569 bne rt, ra, $1 ; LONGJUMP2
9573 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9574 bne rt, ra, $1 ; LONGJUMP2
9578 /* Get the reloc for the address from which the register is
9579 being loaded. This reloc will tell us which function is
9580 actually being called. */
9583 int seq_len; /* Original length of instruction sequence. */
9584 Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend;
9585 int pic_ext_target = 0, first_size;
9587 bfd_signed_vma foff;
9588 uint32_t insn, re_insn = 0;
9589 uint16_t insn16, re_insn16 = 0;
9590 unsigned long reloc, cond_reloc;
9592 enum elf_nds32_reloc_type checked_types[] =
9593 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9595 irelend = internal_relocs + sec->reloc_count;
9596 seq_len = GET_SEQ_LEN (irel->r_addend);
9597 laddr = irel->r_offset;
9598 *insn_len = seq_len;
9599 first_size = (seq_len == 6) ? 2 : 4;
9602 find_relocs_at_address_addr (irel, internal_relocs,
9603 irelend, R_NDS32_25_PCREL_RELA,
9604 laddr + first_size);
9606 for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++)
9609 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9610 checked_types[i], laddr);
9611 if (cond_irelfn != irelend)
9615 if (i2_irelfn == irelend || cond_irelfn == irelend)
9618 ("%B: warning: R_NDS32_LONGJUMP2 points to unrecognized"
9619 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9623 /* Get the value of the symbol referred to by the reloc. */
9625 calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr,
9627 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9628 || foff >= CONSERVATIVE_16BIT_S1)
9631 /* Get the all corresponding instructions. */
9632 if (first_size == 4)
9634 insn = bfd_getb32 (contents + laddr);
9635 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9639 insn16 = bfd_getb16 (contents + laddr);
9640 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9643 if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size)
9644 && foff < ACCURATE_8BIT_S1 - first_size)
9646 if (first_size == 4)
9648 /* Don't convert it to 16-bit now, keep this as relaxable for
9649 ``label reloc; INSN16''. */
9651 /* Save comp_insn32 to buffer. */
9652 bfd_putb32 (re_insn, contents + irel->r_offset);
9654 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9655 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9656 cond_reloc = R_NDS32_INSN16;
9660 bfd_putb16 (re_insn16, contents + irel->r_offset);
9662 reloc = R_NDS32_9_PCREL_RELA;
9663 cond_reloc = R_NDS32_NONE;
9666 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9667 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9668 && foff < ACCURATE_14BIT_S1 - first_size))
9670 /* beqs label ; 15_PCREL */
9671 bfd_putb32 (re_insn, contents + irel->r_offset);
9673 reloc = R_NDS32_15_PCREL_RELA;
9674 cond_reloc = R_NDS32_NONE;
9676 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9677 && foff >= -CONSERVATIVE_16BIT_S1
9678 && foff < CONSERVATIVE_16BIT_S1)
9680 /* beqz label ; 17_PCREL */
9681 bfd_putb32 (re_insn, contents + irel->r_offset);
9683 reloc = R_NDS32_17_PCREL_RELA;
9684 cond_reloc = R_NDS32_NONE;
9689 /* Set all relocations. */
9690 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc);
9691 irel->r_addend = i2_irelfn->r_addend;
9693 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9695 cond_irelfn->r_addend = 0;
9697 if ((seq_len ^ *insn_len ) & 0x2)
9699 insn16 = NDS32_NOP16;
9700 bfd_putb16 (insn16, contents + irel->r_offset + 4);
9701 i2_irelfn->r_offset = 4;
9702 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9704 i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9708 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9713 /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */
9716 nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9717 Elf_Internal_Rela *internal_relocs, int *insn_len,
9718 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9719 Elf_Internal_Shdr *symtab_hdr)
9721 /* There are 5 variations for LONGJUMP3
9722 case 1: 2-4-4-2; 1st insn convertible, 16-bit on,
9723 optimize off or optimize for space
9724 bnes38 rt, ra, $1 ; LONGJUMP3
9725 sethi ta, hi20(symbol) ; HI20
9726 ori ta, ta, lo12(symbol) ; LO12S0
9730 case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed
9731 bnes38 rt, ra, $1 ; LONGJUMP3
9732 sethi ta, hi20(symbol) ; HI20
9733 ori ta, ta, lo12(symbol) ; LO12S0
9737 case 3: 4-4-4-2; 1st insn not convertible, 16-bit on,
9738 optimize off or optimize for space
9739 bne rt, ra, $1 ; LONGJUMP3
9740 sethi ta, hi20(symbol) ; HI20
9741 ori ta, ta, lo12(symbol) ; LO12S0
9745 case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care
9746 16-bit off if no INSN16
9747 bne rt, ra, $1 ; LONGJUMP3
9748 sethi ta, hi20(symbol) ; HI20
9749 ori ta, ta, lo12(symbol) ; LO12S0
9753 case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed
9754 16-bit off if no INSN16
9755 bne rt, ra, $1 ; LONGJUMP3
9756 sethi ta, hi20(symbol) ; HI20
9757 ori ta, ta, lo12(symbol) ; LO12S0
9761 /* Get the reloc for the address from which the register is
9762 being loaded. This reloc will tell us which function is
9763 actually being called. */
9764 enum elf_nds32_reloc_type checked_types[] =
9765 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9767 int reloc_off = 0, cond_removed = 0, convertible;
9769 int seq_len; /* Original length of instruction sequence. */
9770 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9771 int pic_ext_target = 0, first_size;
9773 bfd_signed_vma foff;
9774 uint32_t insn, re_insn = 0;
9775 uint16_t insn16, re_insn16 = 0;
9776 unsigned long reloc, cond_reloc;
9778 irelend = internal_relocs + sec->reloc_count;
9779 seq_len = GET_SEQ_LEN (irel->r_addend);
9780 laddr = irel->r_offset;
9781 *insn_len = seq_len;
9783 convertible = IS_1ST_CONVERT (irel->r_addend);
9790 /* Get all needed relocations. */
9792 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9793 R_NDS32_HI20_RELA, laddr + first_size);
9795 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9796 R_NDS32_LO12S0_ORI_RELA,
9797 laddr + first_size + 4);
9799 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
9802 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9803 checked_types[i], laddr);
9804 if (cond_irelfn != irelend)
9808 if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend)
9811 ("%B: warning: R_NDS32_LONGJUMP3 points to unrecognized"
9812 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9816 /* Get the value of the symbol referred to by the reloc. */
9817 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9820 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9821 || foff >= CONSERVATIVE_24BIT_S1)
9824 /* Get the all corresponding instructions. */
9825 if (first_size == 4)
9827 insn = bfd_getb32 (contents + laddr);
9828 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9832 insn16 = bfd_getb16 (contents + laddr);
9833 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9836 /* For simplicity of coding, we are going to modify the section
9837 contents, the section relocs, and the BFD symbol table. We
9838 must tell the rest of the code not to free up this
9839 information. It would be possible to instead create a table
9840 of changes which have to be made, as is done in coff-mips.c;
9841 that would be more work, but would require less memory when
9842 the linker is run. */
9844 if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size
9845 && foff < ACCURATE_8BIT_S1 - first_size)
9847 if (!(seq_len & 0x2))
9849 /* Don't convert it to 16-bit now, keep this as relaxable
9850 for ``label reloc; INSN1a''6. */
9851 /* Save comp_insn32 to buffer. */
9852 bfd_putb32 (re_insn, contents + irel->r_offset);
9854 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9855 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9856 cond_reloc = R_NDS32_INSN16;
9860 /* Not optimize for speed; convert sequence to 16-bit. */
9861 /* Save comp_insn16 to buffer. */
9862 bfd_putb16 (re_insn16, contents + irel->r_offset);
9864 reloc = R_NDS32_9_PCREL_RELA;
9865 cond_reloc = R_NDS32_NONE;
9869 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9870 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9871 && foff < ACCURATE_14BIT_S1 - first_size))
9873 /* beqs label ; 15_PCREL */
9874 bfd_putb32 (re_insn, contents + irel->r_offset);
9876 reloc = R_NDS32_15_PCREL_RELA;
9877 cond_reloc = R_NDS32_NONE;
9880 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9881 && foff >= -CONSERVATIVE_16BIT_S1
9882 && foff < CONSERVATIVE_16BIT_S1)
9884 /* beqz label ; 17_PCREL */
9885 bfd_putb32 (re_insn, contents + irel->r_offset);
9887 reloc = R_NDS32_17_PCREL_RELA;
9888 cond_reloc = R_NDS32_NONE;
9891 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
9892 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
9894 /* Relax to one of the following 3 variations
9896 case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize
9898 bnes38 rt, $1 ; LONGJUMP2
9902 case 4-4; 1st insn not convertible, others don't care
9903 bne rt, ra, $1 ; LONGJUMP2
9907 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9908 bne rt, ra, $1 ; LONGJUMP2
9912 /* Offset for first instruction. */
9914 /* Use j label as second instruction. */
9915 *insn_len = 4 + first_size;
9917 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9918 reloc = R_NDS32_LONGJUMP2;
9919 cond_reloc = R_NDS32_25_PLTREL;
9924 if (cond_removed == 1)
9926 /* Set all relocations. */
9927 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9928 irel->r_addend = hi_irelfn->r_addend;
9930 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9932 cond_irelfn->r_addend = 0;
9933 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9938 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
9939 irel->r_addend = irel->r_addend;
9940 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9944 if ((seq_len ^ *insn_len ) & 0x2)
9946 insn16 = NDS32_NOP16;
9947 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9948 lo_irelfn->r_offset = *insn_len;
9949 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9951 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9955 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9960 /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */
9963 nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9964 Elf_Internal_Rela *internal_relocs, int *insn_len,
9965 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9966 Elf_Internal_Shdr *symtab_hdr)
9968 /* The pattern for LONGCALL4. Support for function cse.
9969 sethi ta, hi20(symbol) ; LONGCALL4/HI20
9970 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9971 jral ta ; PTR_RES/EMPTY/INSN16 */
9975 Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel;
9976 Elf_Internal_Rela *irelend;
9977 int pic_ext_target = 0;
9978 bfd_signed_vma foff;
9980 irelend = internal_relocs + sec->reloc_count;
9981 laddr = irel->r_offset;
9983 /* Get the reloc for the address from which the register is
9984 being loaded. This reloc will tell us which function is
9985 actually being called. */
9986 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9987 R_NDS32_HI20_RELA, laddr);
9989 if (hi_irel == irelend)
9992 ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized"
9993 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
9997 /* Get the value of the symbol referred to by the reloc. */
9998 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10001 /* This condition only happened when symbol is undefined. */
10002 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10003 || foff >= CONSERVATIVE_24BIT_S1)
10006 /* Relax to: jal symbol; 25_PCREL */
10007 /* For simplicity of coding, we are going to modify the section
10008 contents, the section relocs, and the BFD symbol table. We
10009 must tell the rest of the code not to free up this
10010 information. It would be possible to instead create a table
10011 of changes which have to be made, as is done in coff-mips.c;
10012 that would be more work, but would require less memory when
10013 the linker is run. */
10015 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10016 R_NDS32_PTR_RESOLVED, irel->r_addend);
10017 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10018 R_NDS32_EMPTY, irel->r_addend);
10020 if (ptr_irel == irelend || em_irel == irelend)
10023 ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized"
10024 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10027 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10028 insn = bfd_getb32 (contents + irel->r_addend);
10029 if (insn & 0x80000000)
10032 /* Replace the long call with a jal. */
10033 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10034 R_NDS32_25_PCREL_RELA);
10035 ptr_irel->r_addend = 1;
10037 /* We don't resolve this here but resolve it in relocate_section. */
10039 bfd_putb32 (insn, contents + em_irel->r_offset);
10042 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10044 /* If there is function cse, HI20 can not remove now. */
10045 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10046 R_NDS32_LONGCALL4, laddr);
10047 if (call_irel == irelend)
10051 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10054 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10055 R_NDS32_INSN16, irel->r_addend);
10056 if (insn_irel != irelend)
10057 insn_irel->r_info =
10058 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10063 /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */
10066 nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10067 Elf_Internal_Rela *internal_relocs, int *insn_len,
10068 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10069 Elf_Internal_Shdr *symtab_hdr)
10071 /* The pattern for LONGCALL5.
10072 bltz rt, .L1 ; LONGCALL5/17_PCREL
10073 jal symbol ; 25_PCREL
10078 Elf_Internal_Rela *cond_irel, *irelend;
10079 int pic_ext_target = 0;
10080 bfd_signed_vma foff;
10082 irelend = internal_relocs + sec->reloc_count;
10083 laddr = irel->r_offset;
10084 insn = bfd_getb32 (contents + laddr);
10086 /* Get the reloc for the address from which the register is
10087 being loaded. This reloc will tell us which function is
10088 actually being called. */
10090 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10091 R_NDS32_25_PCREL_RELA, irel->r_addend);
10092 if (cond_irel == irelend)
10095 ("%B: warning: R_NDS32_LONGCALL5 points to unrecognized"
10096 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10100 /* Get the value of the symbol referred to by the reloc. */
10101 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10104 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10105 || foff >= CONSERVATIVE_16BIT_S1)
10108 /* Relax to bgezal rt, label ; 17_PCREL
10109 or bltzal rt, label ; 17_PCREL */
10111 /* Convert to complimentary conditional call. */
10112 insn = CONVERT_CONDITION_CALL (insn);
10114 /* For simplicity of coding, we are going to modify the section
10115 contents, the section relocs, and the BFD symbol table. We
10116 must tell the rest of the code not to free up this
10117 information. It would be possible to instead create a table
10118 of changes which have to be made, as is done in coff-mips.c;
10119 that would be more work, but would require less memory when
10120 the linker is run. */
10122 /* Modify relocation and contents. */
10123 cond_irel->r_info =
10124 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA);
10126 /* Replace the long call with a bgezal. */
10127 bfd_putb32 (insn, contents + cond_irel->r_offset);
10130 /* Clean unnessary relocations. */
10131 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10133 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10134 R_NDS32_17_PCREL_RELA, laddr);
10135 cond_irel->r_info =
10136 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10141 /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */
10144 nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10145 Elf_Internal_Rela *internal_relocs, int *insn_len,
10146 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10147 Elf_Internal_Shdr *symtab_hdr)
10149 /* The pattern for LONGCALL6.
10150 bltz rt, .L1 ; LONGCALL6/17_PCREL
10151 sethi ta, hi20(symbol) ; HI20/PTR
10152 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10153 jral ta ; PTR_RES/EMPTY/INSN16
10158 Elf_Internal_Rela *em_irel, *cond_irel, *irelend;
10159 int pic_ext_target = 0;
10160 bfd_signed_vma foff;
10162 irelend = internal_relocs + sec->reloc_count;
10163 laddr = irel->r_offset;
10165 /* Get the reloc for the address from which the register is
10166 being loaded. This reloc will tell us which function is
10167 actually being called. */
10168 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10169 R_NDS32_EMPTY, irel->r_addend);
10171 if (em_irel == irelend)
10174 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10175 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10179 /* Get the value of the symbol referred to by the reloc. */
10180 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10183 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10184 || foff >= CONSERVATIVE_24BIT_S1)
10187 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10188 insn = bfd_getb32 (contents + irel->r_addend);
10189 if (insn & 0x80000000)
10192 insn = bfd_getb32 (contents + laddr);
10193 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10195 /* Relax to bgezal rt, label ; 17_PCREL
10196 or bltzal rt, label ; 17_PCREL */
10198 /* Convert to complimentary conditional call. */
10200 insn = CONVERT_CONDITION_CALL (insn);
10201 bfd_putb32 (insn, contents + em_irel->r_offset);
10204 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA);
10206 /* Set resolved relocation. */
10208 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10209 R_NDS32_PTR_RESOLVED, irel->r_addend);
10210 if (cond_irel == irelend)
10213 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10214 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10217 cond_irel->r_addend = 1;
10219 /* Clear relocations. */
10222 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10225 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10226 R_NDS32_17_PCREL_RELA, laddr);
10227 if (cond_irel != irelend)
10228 cond_irel->r_info =
10229 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10232 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10233 R_NDS32_INSN16, irel->r_addend);
10234 if (cond_irel != irelend)
10235 cond_irel->r_info =
10236 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10239 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
10241 /* Relax to the following instruction sequence
10242 bltz rt, .L1 ; LONGCALL2/17_PCREL
10243 jal symbol ; 25_PCREL/PTR_RES
10246 /* Convert instruction. */
10248 bfd_putb32 (insn, contents + em_irel->r_offset);
10250 /* Convert relocations. */
10251 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10252 R_NDS32_25_PCREL_RELA);
10254 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5);
10256 /* Set resolved relocation. */
10258 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10259 R_NDS32_PTR_RESOLVED, irel->r_addend);
10260 if (cond_irel == irelend)
10263 ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized"
10264 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10267 cond_irel->r_addend = 1;
10270 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10271 R_NDS32_INSN16, irel->r_addend);
10272 if (cond_irel != irelend)
10273 cond_irel->r_info =
10274 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10279 /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */
10282 nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10283 Elf_Internal_Rela *internal_relocs, int *insn_len,
10284 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10285 Elf_Internal_Shdr *symtab_hdr)
10287 /* The pattern for LONGJUMP4.
10288 sethi ta, hi20(symbol) ; LONGJUMP4/HI20
10289 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10290 jr ta ; PTR_RES/INSN16/EMPTY */
10293 int seq_len; /* Original length of instruction sequence. */
10295 Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend;
10296 int pic_ext_target = 0;
10297 bfd_signed_vma foff;
10299 irelend = internal_relocs + sec->reloc_count;
10300 seq_len = GET_SEQ_LEN (irel->r_addend);
10301 laddr = irel->r_offset;
10302 *insn_len = seq_len;
10304 /* Get the reloc for the address from which the register is
10305 being loaded. This reloc will tell us which function is
10306 actually being called. */
10308 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10309 R_NDS32_HI20_RELA, laddr);
10311 if (hi_irel == irelend)
10314 ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized"
10315 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10319 /* Get the value of the symbol referred to by the reloc. */
10320 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10323 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
10324 || foff < -CONSERVATIVE_24BIT_S1)
10327 /* Convert it to "j label", it may be converted to j8 in the final
10328 pass of relaxation. Therefore, we do not consider this currently. */
10329 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10330 R_NDS32_PTR_RESOLVED, irel->r_addend);
10331 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10332 R_NDS32_EMPTY, irel->r_addend);
10334 if (ptr_irel == irelend || em_irel == irelend)
10337 ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized"
10338 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10343 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA);
10344 ptr_irel->r_addend = 1;
10346 /* Write instruction. */
10348 bfd_putb32 (insn, contents + em_irel->r_offset);
10350 /* Clear relocations. */
10351 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10353 /* If there is function cse, HI20 can not remove now. */
10354 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10355 R_NDS32_LONGJUMP4, laddr);
10356 if (call_irel == irelend)
10360 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10366 /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */
10369 nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10370 Elf_Internal_Rela *internal_relocs, int *insn_len,
10371 int *seq_len, bfd_byte *contents,
10372 Elf_Internal_Sym *isymbuf,
10373 Elf_Internal_Shdr *symtab_hdr)
10375 /* There are 2 variations for LONGJUMP5
10376 case 2-4; 1st insn convertible, 16-bit on.
10377 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10378 j label ; 25_PCREL/INSN16
10381 case 4-4; 1st insn not convertible
10382 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10383 j label ; 25_PCREL/INSN16
10387 Elf_Internal_Rela *cond_irel, *irelend;
10388 int pic_ext_target = 0;
10390 bfd_signed_vma foff;
10391 uint32_t insn, re_insn = 0;
10392 uint16_t insn16, re_insn16 = 0;
10393 unsigned long reloc;
10395 enum elf_nds32_reloc_type checked_types[] =
10396 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10397 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10399 irelend = internal_relocs + sec->reloc_count;
10400 laddr = irel->r_offset;
10402 /* Get the reloc for the address from which the register is
10403 being loaded. This reloc will tell us which function is
10404 actually being called. */
10407 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10408 R_NDS32_25_PCREL_RELA, irel->r_addend);
10409 if (cond_irel == irelend)
10412 ("%B: warning: R_NDS32_LONGJUMP5 points to unrecognized"
10413 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10417 /* Get the value of the symbol referred to by the reloc. */
10418 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10421 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10422 || foff >= CONSERVATIVE_16BIT_S1)
10425 /* Get the all corresponding instructions. */
10426 insn = bfd_getb32 (contents + laddr);
10427 /* Check instruction size. */
10428 if (insn & 0x80000000)
10431 insn16 = insn >> 16;
10432 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10435 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10437 if (N32_OP6 (re_insn) == N32_OP6_BR1
10438 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10440 /* beqs label ; 15_PCREL. */
10441 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10442 reloc = R_NDS32_15_PCREL_RELA;
10444 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10445 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10447 /* beqz label ; 17_PCREL. */
10448 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10449 reloc = R_NDS32_17_PCREL_RELA;
10451 else if ( N32_OP6 (re_insn) == N32_OP6_BR3
10452 && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1)
10454 /* beqc label ; 9_PCREL. */
10455 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10456 reloc = R_NDS32_WORD_9_PCREL_RELA;
10461 /* Set all relocations. */
10462 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc);
10464 /* Clean relocations. */
10465 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10466 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10468 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10469 checked_types[i], laddr);
10470 if (cond_irel != irelend)
10473 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10475 /* If the branch instruction is 2 byte, it cannot remove
10476 directly. Only convert it to nop16 and remove it after
10477 checking alignment issue. */
10478 insn16 = NDS32_NOP16;
10479 bfd_putb16 (insn16, contents + laddr);
10480 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10483 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10492 /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */
10495 nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10496 Elf_Internal_Rela *internal_relocs, int *insn_len,
10497 int *seq_len, bfd_byte *contents,
10498 Elf_Internal_Sym *isymbuf,
10499 Elf_Internal_Shdr *symtab_hdr)
10501 /* There are 5 variations for LONGJUMP6
10502 case : 2-4-4-4; 1st insn convertible, 16-bit on.
10503 bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10504 sethi ta, hi20(symbol) ; HI20/PTR
10505 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10506 jr ta ; PTR_RES/INSN16/EMPTY
10509 case : 4-4-4-4; 1st insn not convertible, 16-bit on.
10510 bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10511 sethi ta, hi20(symbol) ; HI20/PTR
10512 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10513 jr ta ; PTR_RES/INSN16/EMPTY
10516 enum elf_nds32_reloc_type checked_types[] =
10517 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10518 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10520 int reloc_off = 0, cond_removed = 0;
10522 Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel;
10523 int pic_ext_target = 0;
10525 bfd_signed_vma foff;
10526 uint32_t insn, re_insn = 0;
10527 uint16_t insn16, re_insn16 = 0;
10528 unsigned long reloc;
10530 irelend = internal_relocs + sec->reloc_count;
10531 laddr = irel->r_offset;
10533 /* Get the reloc for the address from which the register is
10534 being loaded. This reloc will tell us which function is
10535 actually being called. */
10536 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10537 R_NDS32_EMPTY, irel->r_addend);
10539 if (em_irel == irelend)
10542 ("%B: warning: R_NDS32_LONGJUMP6 points to unrecognized"
10543 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10547 /* Get the value of the symbol referred to by the reloc. */
10548 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10551 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10552 || foff >= CONSERVATIVE_24BIT_S1)
10555 insn = bfd_getb32 (contents + laddr);
10556 /* Check instruction size. */
10557 if (insn & 0x80000000)
10560 insn16 = insn >> 16;
10561 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10564 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10566 /* For simplicity of coding, we are going to modify the section
10567 contents, the section relocs, and the BFD symbol table. We
10568 must tell the rest of the code not to free up this
10569 information. It would be possible to instead create a table
10570 of changes which have to be made, as is done in coff-mips.c;
10571 that would be more work, but would require less memory when
10572 the linker is run. */
10574 if (N32_OP6 (re_insn) == N32_OP6_BR1
10575 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10577 /* beqs label ; 15_PCREL */
10578 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10579 reloc = R_NDS32_15_PCREL_RELA;
10582 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10583 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10585 /* beqz label ; 17_PCREL */
10586 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10587 reloc = R_NDS32_17_PCREL_RELA;
10590 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
10591 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
10593 /* Relax to one of the following 2 variations
10595 case 2-4; 1st insn convertible, 16-bit on.
10596 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10597 j label ; 25_PCREL/INSN16
10600 case 4-4; 1st insn not convertible
10601 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10602 j label ; 25_PCREL/INSN16
10605 /* Use j label as second instruction. */
10607 reloc = R_NDS32_25_PCREL_RELA;
10608 bfd_putb32 (insn, contents + em_irel->r_offset);
10613 /* Set all relocations. */
10614 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc);
10617 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10618 R_NDS32_PTR_RESOLVED, em_irel->r_offset);
10619 cond_irel->r_addend = 1;
10621 /* Use INSN16 of first branch instruction to distinguish if keeping
10622 INSN16 of final instruction or not. */
10623 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10624 R_NDS32_INSN16, irel->r_offset);
10625 if (insn_irel == irelend)
10627 /* Clean the final INSN16. */
10629 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10630 R_NDS32_INSN16, em_irel->r_offset);
10631 insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10635 if (cond_removed == 1)
10639 /* Clear relocations. */
10640 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10642 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10645 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10646 checked_types[i], laddr);
10647 if (cond_irel != irelend)
10650 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10652 /* If the branch instruction is 2 byte, it cannot remove
10653 directly. Only convert it to nop16 and remove it after
10654 checking alignment issue. */
10655 insn16 = NDS32_NOP16;
10656 bfd_putb16 (insn16, contents + laddr);
10657 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10660 cond_irel->r_info =
10661 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10667 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
10668 R_NDS32_LONGJUMP5);
10674 /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */
10677 nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10678 Elf_Internal_Rela *internal_relocs, int *insn_len,
10679 int *seq_len, bfd_byte *contents,
10680 Elf_Internal_Sym *isymbuf,
10681 Elf_Internal_Shdr *symtab_hdr)
10683 /* There are 2 variations for LONGJUMP5
10684 case 2-4; 1st insn convertible, 16-bit on.
10685 movi55 ta, imm11 ; LONGJUMP7/INSN16
10686 beq rt, ta, label ; 15_PCREL
10688 case 4-4; 1st insn not convertible
10689 movi55 ta, imm11 ; LONGJUMP7/INSN16
10690 beq rt, ta, label ; 15_PCREL */
10693 Elf_Internal_Rela *cond_irel, *irelend, *insn_irel;
10694 int pic_ext_target = 0;
10695 bfd_signed_vma foff;
10696 uint32_t insn, re_insn = 0;
10700 irelend = internal_relocs + sec->reloc_count;
10701 laddr = irel->r_offset;
10703 /* Get the reloc for the address from which the register is
10704 being loaded. This reloc will tell us which function is
10705 actually being called. */
10708 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10709 R_NDS32_15_PCREL_RELA, irel->r_addend);
10710 if (cond_irel == irelend)
10713 ("%B: warning: R_NDS32_LONGJUMP7 points to unrecognized"
10714 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10718 /* Get the value of the symbol referred to by the reloc. */
10719 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10722 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1
10723 || foff >= CONSERVATIVE_8BIT_S1)
10726 /* Get the first instruction for its size. */
10727 insn = bfd_getb32 (contents + laddr);
10728 if (insn & 0x80000000)
10731 /* Get the immediate from movi55. */
10732 imm11 = N16_IMM5S (insn >> 16);
10736 /* Get the immediate from movi. */
10737 imm11 = N32_IMM20S (insn);
10740 /* Get the branch instruction. */
10741 insn = bfd_getb32 (contents + irel->r_addend);
10742 /* Convert instruction to BR3. */
10743 if ((insn >> 14) & 0x1)
10744 re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0);
10746 re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0);
10748 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10750 /* Set all relocations. */
10751 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10752 R_NDS32_WORD_9_PCREL_RELA);
10754 /* Clean relocations. */
10755 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10756 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10757 R_NDS32_INSN16, irel->r_offset);
10758 if (insn_irel != irelend)
10762 /* If the first insntruction is 16bit, convert it to nop16. */
10763 insn16 = NDS32_NOP16;
10764 bfd_putb16 (insn16, contents + laddr);
10765 insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10768 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10776 #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f)
10778 /* Relax LOADSTORE relocation for nds32_elf_relax_section. */
10781 nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd,
10782 asection *sec, Elf_Internal_Rela *irel,
10783 Elf_Internal_Rela *internal_relocs, int *insn_len,
10784 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10785 Elf_Internal_Shdr *symtab_hdr, int load_store_relax)
10787 int eliminate_sethi = 0, range_type;
10789 bfd_vma local_sda, laddr;
10790 int seq_len; /* Original length of instruction sequence. */
10792 Elf_Internal_Rela *hi_irelfn = NULL, *irelend;
10793 bfd_vma access_addr = 0;
10794 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10795 enum elf_nds32_reloc_type checked_types[] =
10796 { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20,
10797 R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20,
10798 R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20,
10799 R_NDS32_TLS_LE_HI20
10802 irelend = internal_relocs + sec->reloc_count;
10803 seq_len = GET_SEQ_LEN (irel->r_addend);
10804 laddr = irel->r_offset;
10805 *insn_len = seq_len;
10807 /* Get the high part relocation. */
10808 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10810 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10811 checked_types[i], laddr);
10812 if (hi_irelfn != irelend)
10816 if (hi_irelfn == irelend)
10819 ("%B: warning: R_NDS32_LOADSTORE points to unrecognized"
10820 "reloc at 0x%lx.", abfd, (long) irel->r_offset);
10824 range_type = GET_LOADSTORE_RANGE (irel->r_addend);
10825 nds32_elf_final_sda_base (sec->output_section->owner,
10826 link_info, &local_sda, FALSE);
10828 switch (ELF32_R_TYPE (hi_irelfn->r_info))
10830 case R_NDS32_HI20_RELA:
10831 insn = bfd_getb32 (contents + laddr);
10833 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10835 if (range_type == NDS32_LOADSTORE_IMM)
10837 struct elf_link_hash_entry *h = NULL;
10840 if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info)
10842 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
10843 h = elf_sym_hashes (abfd)[indx];
10846 if ((access_addr < CONSERVATIVE_20BIT)
10847 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10849 eliminate_sethi = 1;
10853 /* This is avoid to relax symbol address which is fixed
10854 relocations. Ex: _stack. */
10855 if (h && bfd_is_abs_section (h->root.u.def.section))
10859 if (!load_store_relax)
10862 /* Case for set gp register. */
10863 if (N32_RT5 (insn) == REG_GP)
10866 if (range_type == NDS32_LOADSTORE_FLOAT_S
10867 || range_type == NDS32_LOADSTORE_FLOAT_S)
10869 range_l = sdata_range[0][0];
10870 range_h = sdata_range[0][1];
10874 range_l = sdata_range[1][0];
10875 range_h = sdata_range[1][1];
10879 case R_NDS32_GOT_HI20:
10881 calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr);
10883 /* If this symbol is not in .got, the return value will be -1.
10884 Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE,
10885 a negative offset is allowed. */
10886 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10887 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10888 eliminate_sethi = 1;
10891 case R_NDS32_PLT_GOTREL_HI20:
10892 access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf,
10893 hi_irelfn, symtab_hdr);
10895 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10896 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10897 eliminate_sethi = 1;
10900 case R_NDS32_GOTOFF_HI20:
10902 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10904 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10905 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10906 eliminate_sethi = 1;
10909 case R_NDS32_GOTPC_HI20:
10910 /* The access_addr must consider r_addend of hi_irel. */
10911 access_addr = sec->output_section->vma + sec->output_offset
10912 + irel->r_offset + hi_irelfn->r_addend;
10914 if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT
10915 && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT)
10916 eliminate_sethi = 1;
10919 case R_NDS32_TLS_LE_HI20:
10921 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10922 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10923 access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10924 if ((range_type == NDS32_LOADSTORE_IMM)
10925 && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT
10926 && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT)
10927 eliminate_sethi = 1;
10934 /* Delete sethi instruction. */
10935 if (eliminate_sethi == 1
10936 || (local_sda <= access_addr && (access_addr - local_sda) < range_h)
10937 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
10939 hi_irelfn->r_info =
10940 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
10942 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10948 /* Relax LO12 relocation for nds32_elf_relax_section. */
10951 nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd,
10952 asection *sec, Elf_Internal_Rela *irel,
10953 Elf_Internal_Rela *internal_relocs, bfd_byte *contents,
10954 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr)
10957 bfd_vma local_sda, laddr;
10958 unsigned long reloc;
10959 bfd_vma access_addr;
10960 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10961 Elf_Internal_Rela *irelfn = NULL, *irelend;
10962 struct elf_link_hash_entry *h = NULL;
10965 /* For SDA base relative relaxation. */
10966 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
10967 &local_sda, FALSE);
10969 irelend = internal_relocs + sec->reloc_count;
10970 laddr = irel->r_offset;
10971 insn = bfd_getb32 (contents + laddr);
10973 if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI)
10976 access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10978 if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info)
10980 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
10981 h = elf_sym_hashes (abfd)[indx];
10984 if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT
10985 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10987 reloc = R_NDS32_20_RELA;
10988 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10989 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
10990 bfd_putb32 (insn, contents + laddr);
10992 /* This is avoid to relax symbol address which is fixed
10993 relocations. Ex: _stack. */
10994 else if (N32_OP6 (insn) == N32_OP6_ORI
10995 && h && bfd_is_abs_section (h->root.u.def.section))
10999 range_l = sdata_range[1][0];
11000 range_h = sdata_range[1][1];
11001 switch (ELF32_R_TYPE (irel->r_info))
11003 case R_NDS32_LO12S0_RELA:
11004 reloc = R_NDS32_SDA19S0_RELA;
11006 case R_NDS32_LO12S1_RELA:
11007 reloc = R_NDS32_SDA18S1_RELA;
11009 case R_NDS32_LO12S2_RELA:
11010 reloc = R_NDS32_SDA17S2_RELA;
11012 case R_NDS32_LO12S2_DP_RELA:
11013 range_l = sdata_range[0][0];
11014 range_h = sdata_range[0][1];
11015 reloc = R_NDS32_SDA12S2_DP_RELA;
11017 case R_NDS32_LO12S2_SP_RELA:
11018 range_l = sdata_range[0][0];
11019 range_h = sdata_range[0][1];
11020 reloc = R_NDS32_SDA12S2_SP_RELA;
11026 /* There are range_h and range_l because linker has to promise
11027 all sections move cross one page together. */
11028 if ((local_sda <= access_addr && (access_addr - local_sda) < range_h)
11029 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
11031 if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP)
11033 /* Maybe we should add R_NDS32_INSN16 reloc type here
11034 or manually do some optimization. sethi can't be
11035 eliminated when updating $gp so the relative ori
11036 needs to be preserved. */
11039 if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info),
11042 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11043 bfd_putb32 (insn, contents + laddr);
11045 irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11047 /* SDA17 must keep INSN16 for converting fp_as_gp. */
11048 if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA)
11050 ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE);
11057 /* Relax low part of PIC instruction pattern. */
11060 nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd,
11061 asection *sec, Elf_Internal_Rela *irel,
11062 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11063 Elf_Internal_Shdr *symtab_hdr)
11066 bfd_vma local_sda, laddr;
11067 bfd_signed_vma foff;
11068 unsigned long reloc;
11070 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11071 &local_sda, FALSE);
11072 laddr = irel->r_offset;
11073 insn = bfd_getb32 (contents + laddr);
11075 if (N32_OP6 (insn) != N32_OP6_ORI)
11078 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12)
11080 foff = calculate_got_memory_address (abfd, link_info, irel,
11081 symtab_hdr) - local_sda;
11082 reloc = R_NDS32_GOT20;
11084 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12)
11086 foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
11087 symtab_hdr) - local_sda;
11088 reloc = R_NDS32_PLT_GOTREL_LO20;
11090 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12)
11092 foff = calculate_memory_address (abfd, irel, isymbuf,
11093 symtab_hdr) - local_sda;
11094 reloc = R_NDS32_GOTOFF;
11096 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12)
11098 foff = local_sda - sec->output_section->vma + sec->output_offset
11099 + irel->r_offset + irel->r_addend;
11100 reloc = R_NDS32_GOTPC20;
11105 if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT))
11107 /* Turn into MOVI. */
11108 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11109 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11110 bfd_putb32 (insn, contents + laddr);
11114 /* Relax low part of LE TLS instruction pattern. */
11117 nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd,
11118 Elf_Internal_Rela *irel,
11119 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11120 Elf_Internal_Shdr *symtab_hdr)
11124 bfd_signed_vma foff;
11125 unsigned long reloc;
11127 laddr = irel->r_offset;
11128 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11129 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11130 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11131 insn = bfd_getb32 (contents + laddr);
11133 if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT
11134 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT)
11136 /* Pattern sethi-ori transform to movi. */
11137 reloc = R_NDS32_TLS_LE_20;
11138 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11139 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11140 bfd_putb32 (insn, contents + laddr);
11144 /* Relax LE TLS calculate address instruction pattern. */
11147 nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd,
11148 asection *sec, Elf_Internal_Rela *irel,
11149 Elf_Internal_Rela *internal_relocs,
11150 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11151 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11153 /* Local TLS non-pic
11154 sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20
11155 ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12
11156 add ra, ta, tp ; TLS_LE_ADD */
11160 bfd_signed_vma foff;
11161 Elf_Internal_Rela *i1_irelfn, *irelend;
11163 irelend = internal_relocs + sec->reloc_count;
11164 laddr = irel->r_offset;
11165 insn = bfd_getb32 (contents + laddr);
11166 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11167 R_NDS32_PTR_RESOLVED);
11168 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11169 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11170 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11172 /* The range is +/-16k. */
11173 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
11174 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
11176 /* Transform add to addi. */
11177 insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0);
11179 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
11181 bfd_putb32 (insn, contents + laddr);
11182 if (i1_irelfn != irelend)
11184 i1_irelfn->r_addend |= 1;
11190 /* Relax LE TLS load store instruction pattern. */
11193 nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd,
11194 asection *sec, Elf_Internal_Rela *irel,
11195 Elf_Internal_Rela *internal_relocs,
11196 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11197 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11202 bfd_signed_vma foff;
11203 Elf_Internal_Rela *i1_irelfn, *irelend;
11206 irelend = internal_relocs + sec->reloc_count;
11207 laddr = irel->r_offset;
11208 insn = bfd_getb32 (contents + laddr);
11209 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11210 R_NDS32_PTR_RESOLVED);
11211 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11212 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
11213 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
11215 switch ((N32_OP6 (insn) << 8) | (insn & 0xff))
11217 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11218 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11219 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11220 /* The range is +/-16k. */
11221 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
11222 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
11225 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11227 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
11231 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11232 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11233 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11234 /* The range is +/-32k. */
11235 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1
11236 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1)
11239 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11241 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1);
11245 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11246 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11247 /* The range is +/-64k. */
11248 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2
11249 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2)
11252 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
11254 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2);
11264 bfd_putb32 (insn, contents + laddr);
11265 if (i1_irelfn != irelend)
11267 i1_irelfn->r_addend |= 1;
11273 /* Relax PTR relocation for nds32_elf_relax_section. */
11276 nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11277 Elf_Internal_Rela *internal_relocs, int *insn_len,
11278 int *seq_len, bfd_byte *contents)
11280 Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel;
11282 irelend = internal_relocs + sec->reloc_count;
11285 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11286 R_NDS32_PTR_RESOLVED, irel->r_addend);
11288 if (re_irel == irelend)
11291 ("%B: warning: R_NDS32_PTR points to unrecognized reloc at 0x%lx.",
11292 abfd, (long) irel->r_offset);
11296 if (re_irel->r_addend != 1)
11299 /* Pointed target is relaxed and no longer needs this void *,
11300 change the type to NONE. */
11301 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11303 /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does
11304 not exist, it means only count 1 and remove it directly. */
11305 /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */
11306 count_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11307 R_NDS32_PTR_COUNT);
11308 ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11310 if (count_irel != irelend)
11312 if (--count_irel->r_addend > 0)
11316 if (ptr_irel != irelend)
11319 /* If the PTR_COUNT is already 0, remove current instruction. */
11320 *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset);
11325 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11328 nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd,
11329 asection *sec, Elf_Internal_Rela *irel,
11330 Elf_Internal_Rela *internal_relocs,
11331 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11332 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11335 bfd_signed_vma foff;
11336 Elf_Internal_Rela *i1_irelfn, *irelend;
11337 bfd_vma local_sda, laddr;
11339 irelend = internal_relocs + sec->reloc_count;
11340 laddr = irel->r_offset;
11341 insn = bfd_getb32 (contents + laddr);
11343 /* FIXME: It's a little trouble to turn JRAL5 to JAL since
11344 we need additional space. It might be help if we could
11345 borrow some space from instructions to be eliminated
11346 such as sethi, ori, add. */
11347 if (insn & 0x80000000)
11350 if (nds32_elf_check_dup_relocs
11351 (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF))
11355 find_relocs_at_address (irel, internal_relocs, irelend,
11356 R_NDS32_PTR_RESOLVED);
11359 The boundary should be reduced since the .plt section hasn't
11360 been created and the address of specific entry is still unknown
11361 Maybe the range between the function call and the begin of the
11362 .text section can be used to decide if the .plt is in the range
11363 of function call. */
11365 if (N32_OP6 (insn) == N32_OP6_ALU1
11366 && N32_SUB5 (insn) == N32_ALU1_ADD)
11368 /* Get the value of the symbol referred to by the reloc. */
11369 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11370 &local_sda, FALSE);
11371 foff = (bfd_signed_vma) (calculate_plt_memory_address
11372 (abfd, link_info, isymbuf, irel,
11373 symtab_hdr) - local_sda);
11374 /* This condition only happened when symbol is undefined. */
11378 if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT)
11380 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11381 R_NDS32_PLT_GOTREL_LO19);
11383 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
11385 else if (N32_OP6 (insn) == N32_OP6_JREG
11386 && N32_SUB5 (insn) == N32_JREG_JRAL)
11388 /* Get the value of the symbol referred to by the reloc. */
11390 calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr);
11391 /* This condition only happened when symbol is undefined. */
11394 if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1)
11396 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL);
11402 bfd_putb32 (insn, contents + laddr);
11403 if (i1_irelfn != irelend)
11405 i1_irelfn->r_addend |= 1;
11410 /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */
11413 nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd,
11414 asection *sec, Elf_Internal_Rela *irel,
11415 Elf_Internal_Rela *internal_relocs,
11416 bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr,
11417 bfd_boolean *again)
11420 bfd_signed_vma foff;
11421 Elf_Internal_Rela *i1_irelfn, *irelend;
11422 bfd_vma local_sda, laddr;
11424 irelend = internal_relocs + sec->reloc_count;
11425 laddr = irel->r_offset;
11426 insn = bfd_getb32 (contents + laddr);
11427 if (insn & 0x80000000)
11430 if (nds32_elf_check_dup_relocs
11431 (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF))
11434 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11435 R_NDS32_PTR_RESOLVED);
11437 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11438 &local_sda, FALSE);
11439 foff = calculate_got_memory_address (abfd, link_info, irel,
11440 symtab_hdr) - local_sda;
11442 if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT)
11444 /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */
11445 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11447 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA);
11448 bfd_putb32 (insn, contents + laddr);
11449 if (i1_irelfn != irelend)
11451 i1_irelfn->r_addend |= 1;
11457 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11460 nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd,
11461 asection *sec, Elf_Internal_Rela *irel,
11462 Elf_Internal_Rela *internal_relocs,
11463 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11464 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11466 int opc_insn_gotoff;
11468 bfd_signed_vma foff;
11469 Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend;
11470 bfd_vma local_sda, laddr;
11472 irelend = internal_relocs + sec->reloc_count;
11473 laddr = irel->r_offset;
11474 insn = bfd_getb32 (contents + laddr);
11476 if (insn & 0x80000000)
11479 if (nds32_elf_check_dup_relocs
11480 (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF))
11483 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11484 R_NDS32_PTR_RESOLVED);
11485 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11486 &local_sda, FALSE);
11487 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11488 foff = foff - local_sda;
11490 if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT)
11493 /* Concatenate opcode and sub-opcode for switch case.
11494 It may be MEM or ALU1. */
11495 opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff);
11496 switch (opc_insn_gotoff)
11498 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11499 /* 4-byte aligned. */
11500 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11502 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11504 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11505 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
11507 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11509 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11510 /* 2-byte aligned. */
11511 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
11513 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11515 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11516 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18));
11518 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11520 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11521 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19));
11523 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11525 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11526 /* 1-byte aligned. */
11527 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
11529 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11531 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11532 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19));
11534 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11536 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11537 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
11539 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11541 case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD:
11542 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19));
11544 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11550 bfd_putb32 (insn, contents + laddr);
11551 if (i1_irelfn != irelend)
11553 i1_irelfn->r_addend |= 1;
11556 if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11557 R_NDS32_INSN16)) != irelend)
11558 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11563 nds32_relax_adjust_label (bfd *abfd, asection *sec,
11564 Elf_Internal_Rela *internal_relocs,
11565 bfd_byte *contents,
11566 nds32_elf_blank_t **relax_blank_list,
11567 int optimize, int opt_size)
11569 /* This code block is used to adjust 4-byte alignment by relax a pair
11570 of instruction a time.
11572 It recognizes three types of relocations.
11573 1. R_NDS32_LABEL - a aligment.
11574 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit.
11575 3. is_16bit_NOP () - remove a 16-bit instruction. */
11577 /* TODO: It seems currently implementation only support 4-byte aligment.
11578 We should handle any-aligment. */
11580 Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel;
11581 Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL;
11582 Elf_Internal_Rela rel_temp;
11583 Elf_Internal_Rela *irelend;
11587 /* Checking for branch relaxation relies on the relocations to
11588 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
11589 nds32_insertion_sort (internal_relocs, sec->reloc_count,
11590 sizeof (Elf_Internal_Rela), compar_reloc);
11592 irelend = internal_relocs + sec->reloc_count;
11594 /* Force R_NDS32_LABEL before R_NDS32_INSN16. */
11595 /* FIXME: Can we generate the right order in assembler?
11596 So we don't have to swapping them here. */
11598 for (label_rel = internal_relocs, insn_rel = internal_relocs;
11599 label_rel < irelend; label_rel++)
11601 if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL)
11604 /* Find the first reloc has the same offset with label_rel. */
11605 while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset)
11608 for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset;
11610 /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same
11612 if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16)
11615 if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset
11616 && insn_rel < label_rel)
11618 /* Swap the two reloc if the R_NDS32_INSN16 is
11619 before R_NDS32_LABEL. */
11620 memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela));
11621 memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela));
11622 memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela));
11628 /* If there were a sequence of R_NDS32_LABEL end up with .align 2
11629 or higher, remove other R_NDS32_LABEL with lower alignment.
11630 If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted,
11631 then the R_NDS32_LABEL sequence is broke. */
11632 for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++)
11634 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL)
11636 if (label_rel == NULL)
11638 if (tmp_rel->r_addend < 2)
11639 label_rel = tmp_rel;
11642 else if (tmp_rel->r_addend > 1)
11644 /* Remove all LABEL relocation from label_rel to tmp_rel
11645 including relocations with same offset as tmp_rel. */
11646 for (tmp2_rel = label_rel; tmp2_rel < tmp_rel
11647 || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++)
11649 if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL
11650 && tmp2_rel->r_addend < 2)
11652 ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info),
11658 else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel)
11660 /* A new INSN16 which can be converted, so clear label_rel. */
11661 if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs,
11663 || is_16bit_NOP (abfd, sec, tmp_rel))
11670 /* Optimized for speed and nothing has not been relaxed.
11671 It's time to align labels.
11672 We may convert a 16-bit instruction right before a label to
11673 32-bit, in order to align the label if necessary
11674 all reloc entries has been sorted by r_offset. */
11675 for (irel = internal_relocs; irel < irelend; irel++)
11677 if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16
11678 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL)
11681 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16)
11683 /* A new INSN16 found, resize the old one. */
11684 if (is_convert_32_to_16
11685 (abfd, sec, irel, internal_relocs, irelend, &insn16)
11686 || is_16bit_NOP (abfd, sec, irel))
11690 /* Previous INSN16 reloc exists, reduce its
11692 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11695 nds32_elf_write_16 (abfd, contents, insn_rel,
11696 internal_relocs, irelend, insn16);
11698 if (!insert_nds32_elf_blank_recalc_total
11699 (relax_blank_list, insn_rel->r_offset + 2, 2))
11702 else if (is_16bit_NOP (abfd, sec, insn_rel))
11704 if (!insert_nds32_elf_blank_recalc_total
11705 (relax_blank_list, insn_rel->r_offset, 2))
11709 ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE);
11711 /* Save the new one for later use. */
11715 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11718 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL)
11720 /* Search for label. */
11721 int force_relax = 0;
11723 /* Label on 16-bit instruction or optimization
11724 needless, just reset this reloc. */
11725 insn16 = bfd_getb16 (contents + irel->r_offset);
11726 if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000)))
11729 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11734 irel->r_offset - get_nds32_elf_blank_total (relax_blank_list,
11735 irel->r_offset, 1);
11739 /* Check if there is case which can not be aligned. */
11740 if (irel->r_addend == 2 && address & 0x2)
11745 /* Try to align this label. */
11747 if ((irel->r_addend & 0x1f) < 2)
11749 /* Check if there is a INSN16 at the same address.
11750 Label_rel always seats before insn_rel after
11753 /* Search for INSN16 at LABEL location. If INSN16 is at
11754 same location and this LABEL alignment is lower than 2,
11755 the INSN16 can be converted to 2-byte. */
11756 for (tmp_rel = irel;
11757 tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset;
11760 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16
11761 && (is_convert_32_to_16
11762 (abfd, sec, tmp_rel, internal_relocs,
11764 || is_16bit_NOP (abfd, sec, tmp_rel)))
11772 if (force_relax || irel->r_addend == 1 || address & 0x2)
11774 /* Label not aligned. */
11775 /* Previous reloc exists, reduce its size to 16-bit. */
11776 if (is_convert_32_to_16 (abfd, sec, insn_rel,
11777 internal_relocs, irelend, &insn16))
11779 nds32_elf_write_16 (abfd, contents, insn_rel,
11780 internal_relocs, irelend, insn16);
11782 if (!insert_nds32_elf_blank_recalc_total
11783 (relax_blank_list, insn_rel->r_offset + 2, 2))
11786 else if (is_16bit_NOP (abfd, sec, insn_rel))
11788 if (!insert_nds32_elf_blank_recalc_total
11789 (relax_blank_list, insn_rel->r_offset, 2))
11794 /* INSN16 reloc is used. */
11800 sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0);
11801 if (insn_rel && (address & 0x2 || opt_size))
11803 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11806 nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs,
11808 if (!insert_nds32_elf_blank_recalc_total
11809 (relax_blank_list, insn_rel->r_offset + 2, 2))
11811 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11814 else if (is_16bit_NOP (abfd, sec, insn_rel))
11816 if (!insert_nds32_elf_blank_recalc_total
11817 (relax_blank_list, insn_rel->r_offset, 2))
11819 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11827 /* Pick relaxation round. */
11830 nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again,
11831 struct elf_nds32_link_hash_table *table,
11832 struct bfd_link_info *link_info)
11834 static asection *final_sec, *first_sec = NULL;
11835 static bfd_boolean normal_again = FALSE;
11836 static bfd_boolean set = FALSE;
11837 static bfd_boolean first = TRUE;
11838 int round_table[] = {
11839 NDS32_RELAX_NORMAL_ROUND,
11840 NDS32_RELAX_JUMP_IFC_ROUND,
11841 NDS32_RELAX_EX9_BUILD_ROUND,
11842 NDS32_RELAX_EX9_REPLACE_ROUND,
11844 static int pass = 0;
11845 static int relax_round;
11847 /* The new round. */
11848 if (init && first_sec == sec)
11851 normal_again = FALSE;
11856 /* Run an empty run to get the final section. */
11857 relax_round = NDS32_RELAX_EMPTY_ROUND;
11859 /* It has to enter relax again because we can
11860 not make sure what the final turn is. */
11869 /* Not reenter yet. */
11871 return relax_round;
11874 relax_round = round_table[pass];
11876 if (!init && relax_round == NDS32_RELAX_NORMAL_ROUND && *again)
11877 normal_again = TRUE;
11879 if (!init && final_sec == sec)
11881 switch (relax_round)
11883 case NDS32_RELAX_NORMAL_ROUND:
11886 /* Normal relaxation done. */
11887 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11892 else if (table->target_optimize & NDS32_RELAX_EX9_ON)
11894 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11897 else if (table->ex9_import_file)
11899 /* Import ex9 table. */
11900 if (table->update_ex9_table)
11901 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11903 pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */
11904 nds32_elf_ex9_import_table (link_info);
11909 case NDS32_RELAX_JUMP_IFC_ROUND:
11910 if (!nds32_elf_ifc_finish (link_info))
11911 _bfd_error_handler (_("error: Jump IFC Fail."));
11912 if (table->target_optimize & NDS32_RELAX_EX9_ON)
11918 case NDS32_RELAX_EX9_BUILD_ROUND:
11919 nds32_elf_ex9_finish (link_info);
11923 case NDS32_RELAX_EX9_REPLACE_ROUND:
11924 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11926 /* Do jump IFC optimization again. */
11927 if (!nds32_elf_ifc_finish (link_info))
11928 _bfd_error_handler (_("error: Jump IFC Fail."));
11936 return relax_round;
11940 nds32_elf_relax_section (bfd *abfd, asection *sec,
11941 struct bfd_link_info *link_info, bfd_boolean *again)
11943 nds32_elf_blank_t *relax_blank_list = NULL;
11944 Elf_Internal_Shdr *symtab_hdr;
11945 Elf_Internal_Rela *internal_relocs;
11946 Elf_Internal_Rela *irel;
11947 Elf_Internal_Rela *irelend;
11948 Elf_Internal_Sym *isymbuf = NULL;
11949 bfd_byte *contents = NULL;
11950 bfd_boolean result = TRUE;
11956 /* Target dependnet option. */
11957 struct elf_nds32_link_hash_table *table;
11958 int load_store_relax;
11961 relax_blank_list = NULL;
11965 /* Nothing to do for
11966 * relocatable link or
11967 * non-relocatable section or
11968 * non-code section or
11970 * no reloc entry. */
11971 if (bfd_link_relocatable (link_info)
11972 || (sec->flags & SEC_RELOC) == 0
11973 || (sec->flags & SEC_EXCLUDE) == 1
11974 || (sec->flags & SEC_CODE) == 0
11978 /* 09.12.11 Workaround. */
11979 /* We have to adjust align for R_NDS32_LABEL if needed.
11980 The adjust approach only can fix 2-byte align once. */
11981 if (sec->alignment_power > 2)
11984 /* The optimization type to do. */
11986 table = nds32_elf_hash_table (link_info);
11987 relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info);
11988 switch (relax_round)
11990 case NDS32_RELAX_JUMP_IFC_ROUND:
11991 /* Here is the entrance of ifc jump relaxation. */
11992 if (!nds32_elf_ifc_calc (link_info, abfd, sec))
11994 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
11997 case NDS32_RELAX_EX9_BUILD_ROUND:
11998 /* Here is the entrance of ex9 relaxation. There are two pass of
11999 ex9 relaxation. The one is to traverse all instructions and build
12000 the hash table. The other one is to compare instructions and replace
12002 if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info))
12004 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12007 case NDS32_RELAX_EX9_REPLACE_ROUND:
12008 if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec))
12012 case NDS32_RELAX_EMPTY_ROUND:
12013 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12016 case NDS32_RELAX_NORMAL_ROUND:
12018 if (sec->reloc_count == 0)
12023 /* The begining of general relaxation. */
12025 if (is_SDA_BASE_set == 0)
12028 is_SDA_BASE_set = 1;
12029 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
12031 relax_range_measurement (abfd);
12034 if (is_ITB_BASE_set == 0)
12036 /* Set the _ITB_BASE_. */
12037 if (!nds32_elf_ex9_itb_base (link_info))
12039 _bfd_error_handler (_("%B: error: Cannot set _ITB_BASE_"), abfd);
12040 bfd_set_error (bfd_error_bad_value);
12044 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12045 /* Relocations MUST be kept in memory, because relaxation adjust them. */
12046 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
12047 TRUE /* keep_memory */);
12048 if (internal_relocs == NULL)
12051 irelend = internal_relocs + sec->reloc_count;
12052 irel = find_relocs_at_address (internal_relocs, internal_relocs,
12053 irelend, R_NDS32_RELAX_ENTRY);
12055 if (irel == irelend)
12058 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
12060 if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG)
12062 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12066 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG)
12069 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG)
12073 load_store_relax = table->load_store_relax;
12075 /* Get symbol table and section content. */
12076 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12077 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12080 /* Do relax loop only when finalize is not done.
12081 Take care of relaxable relocs except INSN16. */
12082 for (irel = internal_relocs; irel < irelend; irel++)
12084 int seq_len; /* Original length of instruction sequence. */
12085 int insn_len = 0; /* Final length of instruction sequence. */
12086 bfd_boolean removed;
12089 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
12090 && (irel->r_addend & 0x1f) >= 2)
12093 /* Relocation Types
12094 R_NDS32_LONGCALL1 53
12095 R_NDS32_LONGCALL2 54
12096 R_NDS32_LONGCALL3 55
12097 R_NDS32_LONGJUMP1 56
12098 R_NDS32_LONGJUMP2 57
12099 R_NDS32_LONGJUMP3 58
12100 R_NDS32_LOADSTORE 59 */
12101 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1
12102 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE)
12103 seq_len = GET_SEQ_LEN (irel->r_addend);
12105 /* Relocation Types
12106 R_NDS32_LONGCALL4 107
12107 R_NDS32_LONGCALL5 108
12108 R_NDS32_LONGCALL6 109
12109 R_NDS32_LONGJUMP4 110
12110 R_NDS32_LONGJUMP5 111
12111 R_NDS32_LONGJUMP6 112
12112 R_NDS32_LONGJUMP7 113 */
12113 else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4
12114 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7)
12117 /* Relocation Types
12118 R_NDS32_LO12S0_RELA 30
12119 R_NDS32_LO12S1_RELA 29
12120 R_NDS32_LO12S2_RELA 28
12121 R_NDS32_LO12S2_SP_RELA 71
12122 R_NDS32_LO12S2_DP_RELA 70
12123 R_NDS32_GOT_LO12 46
12124 R_NDS32_GOTOFF_LO12 50
12125 R_NDS32_PLTREL_LO12 65
12126 R_NDS32_PLT_GOTREL_LO12 67
12127 R_NDS32_17IFC_PCREL_RELA 96
12128 R_NDS32_GOT_SUFF 193
12129 R_NDS32_GOTOFF_SUFF 194
12130 R_NDS32_PLT_GOT_SUFF 195
12131 R_NDS32_MULCALL_SUFF 196
12133 else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA
12134 && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA)
12135 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA
12136 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA
12137 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12
12138 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12
12139 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12
12140 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12
12141 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12
12142 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF
12143 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR)
12144 || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12145 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12
12146 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD
12147 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS)
12152 insn_len = seq_len;
12155 switch (ELF32_R_TYPE (irel->r_info))
12157 case R_NDS32_LONGCALL1:
12158 removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs,
12159 &insn_len, contents, isymbuf,
12162 case R_NDS32_LONGCALL2:
12163 removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs,
12164 &insn_len, contents, isymbuf,
12167 case R_NDS32_LONGCALL3:
12168 removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs,
12169 &insn_len, contents, isymbuf,
12172 case R_NDS32_LONGJUMP1:
12173 removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs,
12174 &insn_len, contents, isymbuf,
12177 case R_NDS32_LONGJUMP2:
12178 removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs,
12179 &insn_len, contents, isymbuf,
12182 case R_NDS32_LONGJUMP3:
12183 removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs,
12184 &insn_len, contents, isymbuf,
12187 case R_NDS32_LONGCALL4:
12188 removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs,
12189 &insn_len, contents, isymbuf,
12192 case R_NDS32_LONGCALL5:
12193 removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs,
12194 &insn_len, contents, isymbuf,
12197 case R_NDS32_LONGCALL6:
12198 removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs,
12199 &insn_len, contents, isymbuf,
12202 case R_NDS32_LONGJUMP4:
12203 removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs,
12204 &insn_len, contents, isymbuf,
12207 case R_NDS32_LONGJUMP5:
12208 removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs,
12209 &insn_len, &seq_len, contents,
12210 isymbuf, symtab_hdr);
12212 case R_NDS32_LONGJUMP6:
12213 removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs,
12214 &insn_len, &seq_len, contents,
12215 isymbuf, symtab_hdr);
12217 case R_NDS32_LONGJUMP7:
12218 removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs,
12219 &insn_len, &seq_len, contents,
12220 isymbuf, symtab_hdr);
12222 case R_NDS32_LOADSTORE:
12223 removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel,
12224 internal_relocs, &insn_len,
12225 contents, isymbuf, symtab_hdr,
12228 case R_NDS32_LO12S0_RELA:
12229 case R_NDS32_LO12S1_RELA:
12230 case R_NDS32_LO12S2_DP_RELA:
12231 case R_NDS32_LO12S2_SP_RELA:
12232 case R_NDS32_LO12S2_RELA:
12233 /* Relax for low part. */
12234 nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs,
12235 contents, isymbuf, symtab_hdr);
12237 /* It is impossible to delete blank, so just continue. */
12239 case R_NDS32_GOT_LO12:
12240 case R_NDS32_GOTOFF_LO12:
12241 case R_NDS32_PLTREL_LO12:
12242 case R_NDS32_PLT_GOTREL_LO12:
12243 case R_NDS32_GOTPC_LO12:
12244 /* Relax for PIC gp-relative low part. */
12245 nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents,
12246 isymbuf, symtab_hdr);
12248 /* It is impossible to delete blank, so just continue. */
12250 case R_NDS32_TLS_LE_LO12:
12251 /* Relax for LE TLS low part. */
12252 nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents,
12253 isymbuf, symtab_hdr);
12255 /* It is impossible to delete blank, so just continue. */
12257 case R_NDS32_TLS_LE_ADD:
12258 nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs,
12259 contents, isymbuf, symtab_hdr, again);
12260 /* It is impossible to delete blank, so just continue. */
12262 case R_NDS32_TLS_LE_LS:
12263 nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs,
12264 contents, isymbuf, symtab_hdr, again);
12267 removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs,
12268 &insn_len, &seq_len, contents);
12270 case R_NDS32_PLT_GOT_SUFF:
12271 nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel,
12272 internal_relocs, contents,
12273 isymbuf, symtab_hdr, again);
12274 /* It is impossible to delete blank, so just continue. */
12276 case R_NDS32_GOT_SUFF:
12277 nds32_elf_relax_got_suff (link_info, abfd, sec, irel,
12278 internal_relocs, contents,
12279 symtab_hdr, again);
12280 /* It is impossible to delete blank, so just continue. */
12282 case R_NDS32_GOTOFF_SUFF:
12283 nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel,
12284 internal_relocs, contents,
12285 isymbuf, symtab_hdr, again);
12286 /* It is impossible to delete blank, so just continue. */
12292 if (removed && seq_len - insn_len > 0)
12294 if (!insert_nds32_elf_blank
12295 (&relax_blank_list, irel->r_offset + insn_len,
12296 seq_len - insn_len))
12302 calc_nds32_blank_total (relax_blank_list);
12304 if (table->relax_fp_as_gp)
12306 if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs,
12310 if (*again == FALSE)
12312 if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs,
12318 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12320 if (*again == FALSE)
12322 if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents,
12323 &relax_blank_list, optimize, opt_size))
12327 /* It doesn't matter optimize_for_space_no_align anymore.
12328 If object file is assembled with flag '-Os',
12329 the we don't adjust jump-destination on 4-byte boundary. */
12331 if (relax_blank_list)
12333 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12334 relax_blank_list = NULL;
12337 if (*again == FALSE)
12339 /* Closing the section, so we don't relax it anymore. */
12340 bfd_vma sec_size_align;
12341 Elf_Internal_Rela *tmp_rel;
12343 /* Pad to alignment boundary. Only handle current section alignment. */
12344 sec_size_align = (sec->size + (~((-1U) << sec->alignment_power)))
12345 & ((-1U) << sec->alignment_power);
12346 if ((sec_size_align - sec->size) & 0x2)
12348 insn16 = NDS32_NOP16;
12349 bfd_putb16 (insn16, contents + sec->size);
12353 while (sec_size_align != sec->size)
12355 insn = NDS32_NOP32;
12356 bfd_putb32 (insn, contents + sec->size);
12360 tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs,
12361 irelend, R_NDS32_RELAX_ENTRY);
12362 if (tmp_rel != irelend)
12363 tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG;
12365 clean_nds32_elf_blank ();
12369 if (internal_relocs != NULL
12370 && elf_section_data (sec)->relocs != internal_relocs)
12371 free (internal_relocs);
12373 if (contents != NULL
12374 && elf_section_data (sec)->this_hdr.contents != contents)
12377 if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf)
12387 static struct bfd_elf_special_section const nds32_elf_special_sections[] =
12389 {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE},
12390 {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE},
12395 nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED,
12396 struct bfd_link_info *info,
12397 void *finfo ATTRIBUTE_UNUSED,
12398 bfd_boolean (*func) (void *, const char *,
12399 Elf_Internal_Sym *,
12401 struct elf_link_hash_entry *)
12404 FILE *sym_ld_script = NULL;
12405 struct elf_nds32_link_hash_table *table;
12407 table = nds32_elf_hash_table (info);
12408 sym_ld_script = table->sym_ld_script;
12410 if (check_start_export_sym)
12411 fprintf (sym_ld_script, "}\n");
12416 static enum elf_reloc_type_class
12417 nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
12418 const asection *rel_sec ATTRIBUTE_UNUSED,
12419 const Elf_Internal_Rela *rela)
12421 switch ((int) ELF32_R_TYPE (rela->r_info))
12423 case R_NDS32_RELATIVE:
12424 return reloc_class_relative;
12425 case R_NDS32_JMP_SLOT:
12426 return reloc_class_plt;
12428 return reloc_class_copy;
12430 return reloc_class_normal;
12434 /* Put target dependent option into info hash table. */
12436 bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info,
12437 int relax_fp_as_gp,
12438 int eliminate_gc_relocs,
12439 FILE * sym_ld_script, int load_store_relax,
12440 int target_optimize, int relax_status,
12441 int relax_round, FILE * ex9_export_file,
12442 FILE * ex9_import_file,
12443 int update_ex9_table, int ex9_limit,
12444 bfd_boolean ex9_loop_aware,
12445 bfd_boolean ifc_loop_aware)
12447 struct elf_nds32_link_hash_table *table;
12449 table = nds32_elf_hash_table (link_info);
12453 table->relax_fp_as_gp = relax_fp_as_gp;
12454 table->eliminate_gc_relocs = eliminate_gc_relocs;
12455 table->sym_ld_script = sym_ld_script;
12456 table ->load_store_relax = load_store_relax;
12457 table->target_optimize = target_optimize;
12458 table->relax_status = relax_status;
12459 table->relax_round = relax_round;
12460 table->ex9_export_file = ex9_export_file;
12461 table->ex9_import_file = ex9_import_file;
12462 table->update_ex9_table = update_ex9_table;
12463 table->ex9_limit = ex9_limit;
12464 table->ex9_loop_aware = ex9_loop_aware;
12465 table->ifc_loop_aware = ifc_loop_aware;
12468 /* These functions and data-structures are used for fp-as-gp
12471 #define FAG_THRESHOLD 3 /* At least 3 gp-access. */
12472 /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between
12473 the read-only section and read-write section. */
12474 #define FAG_WINDOW (508 - 32)
12476 /* An nds32_fag represent a gp-relative access.
12477 We find best fp-base by using a sliding window
12478 to find a base address which can cover most gp-access. */
12481 struct nds32_fag *next; /* NULL-teminated linked list. */
12482 bfd_vma addr; /* The address of this fag. */
12483 Elf_Internal_Rela **relas; /* The relocations associated with this fag.
12484 It is used for applying FP7U2_FLAG. */
12485 int count; /* How many times this address is referred.
12486 There should be exactly `count' relocations
12488 int relas_capcity; /* The buffer size of relas.
12489 We use an array instead of linked-list,
12490 and realloc is used to adjust buffer size. */
12494 nds32_fag_init (struct nds32_fag *head)
12496 memset (head, 0, sizeof (struct nds32_fag));
12500 nds32_fag_verify (struct nds32_fag *head)
12502 struct nds32_fag *iter;
12503 struct nds32_fag *prev;
12509 if (prev && prev->addr >= iter->addr)
12510 puts ("Bug in fp-as-gp insertion.");
12516 /* Insert a fag in ascending order.
12517 If a fag of the same address already exists,
12518 they are chained by relas array. */
12521 nds32_fag_insert (struct nds32_fag *head, bfd_vma addr,
12522 Elf_Internal_Rela * rel)
12524 struct nds32_fag *iter;
12525 struct nds32_fag *new_fag;
12526 const int INIT_RELAS_CAP = 4;
12529 iter->next && iter->next->addr <= addr;
12531 /* Find somewhere to insert. */ ;
12533 /* `iter' will be equal to `head' if the list is empty. */
12534 if (iter != head && iter->addr == addr)
12536 /* The address exists in the list.
12537 Insert `rel' into relocation list, relas. */
12539 /* Check whether relas is big enough. */
12540 if (iter->count >= iter->relas_capcity)
12542 iter->relas_capcity *= 2;
12543 iter->relas = bfd_realloc
12544 (iter->relas, iter->relas_capcity * sizeof (void *));
12546 iter->relas[iter->count++] = rel;
12550 /* This is a new address. Create a fag node for it. */
12551 new_fag = bfd_malloc (sizeof (struct nds32_fag));
12552 memset (new_fag, 0, sizeof (*new_fag));
12553 new_fag->addr = addr;
12554 new_fag->count = 1;
12555 new_fag->next = iter->next;
12556 new_fag->relas_capcity = INIT_RELAS_CAP;
12557 new_fag->relas = (Elf_Internal_Rela **)
12558 bfd_malloc (new_fag->relas_capcity * sizeof (void *));
12559 new_fag->relas[0] = rel;
12560 iter->next = new_fag;
12562 nds32_fag_verify (head);
12566 nds32_fag_free_list (struct nds32_fag *head)
12568 struct nds32_fag *iter;
12573 struct nds32_fag *tmp = iter;
12581 /* Find the best fp-base address.
12582 The relocation associated with that address is returned,
12583 so we can track the symbol instead of a fixed address.
12585 When relaxation, the address of an datum may change,
12586 because a text section is shrinked, so the data section
12587 moves forward. If the aligments of text and data section
12588 are different, their distance may change too.
12589 Therefore, tracking a fixed address is not appriate. */
12592 nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp)
12594 struct nds32_fag *base; /* First fag in the window. */
12595 struct nds32_fag *last; /* First fag outside the window. */
12596 int accu = 0; /* Usage accumulation. */
12597 struct nds32_fag *best; /* Best fag. */
12598 int baccu = 0; /* Best accumulation. */
12600 /* Use first fag for initial, and find the last fag in the window.
12602 In each iteration, we could simply subtract previous fag
12603 and accumulate following fags which are inside the window,
12604 untill we each the end. */
12606 if (head->next == NULL)
12612 /* Initialize base. */
12616 last && last->addr < base->addr + FAG_WINDOW;
12618 accu += last->count;
12622 /* Record the best base in each iteration. */
12625 accu -= base->count;
12627 /* Account fags in window. */
12628 for (/* Nothing. */;
12629 last && last->addr < base->addr + FAG_WINDOW;
12631 accu += last->count;
12633 /* A better fp-base? */
12646 /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses,
12647 so we can convert it fo fp-relative access later.
12648 `best_fag' is the best fp-base. Only those inside the window
12649 of best_fag is applied the flag. */
12652 nds32_fag_mark_relax (struct bfd_link_info *link_info,
12653 bfd *abfd, struct nds32_fag *best_fag,
12654 Elf_Internal_Rela *internal_relocs,
12655 Elf_Internal_Rela *irelend)
12657 struct nds32_fag *ifag;
12658 bfd_vma best_fpbase, gp;
12661 output_bfd = abfd->sections->output_section->owner;
12662 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
12663 best_fpbase = best_fag->addr;
12665 if (best_fpbase > gp + sdata_range[1][1]
12666 || best_fpbase < gp - sdata_range[1][0])
12669 /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag,
12670 so we know they can be converted to lwi37.fp. */
12671 for (ifag = best_fag;
12672 ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next)
12676 for (i = 0; i < ifag->count; i++)
12678 Elf_Internal_Rela *insn16_rel;
12679 Elf_Internal_Rela *fag_rel;
12681 fag_rel = ifag->relas[i];
12683 /* Only if this is within the WINDOWS, FP7U2_FLAG
12686 insn16_rel = find_relocs_at_address
12687 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12689 if (insn16_rel != irelend)
12690 insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG;
12696 /* Reset INSN16 to clean fp as gp. */
12699 nds32_fag_unmark_relax (struct nds32_fag *fag,
12700 Elf_Internal_Rela *internal_relocs,
12701 Elf_Internal_Rela *irelend)
12703 struct nds32_fag *ifag;
12705 Elf_Internal_Rela *insn16_rel;
12706 Elf_Internal_Rela *fag_rel;
12708 for (ifag = fag; ifag; ifag = ifag->next)
12710 for (i = 0; i < ifag->count; i++)
12712 fag_rel = ifag->relas[i];
12714 /* Restore the INSN16 relocation. */
12715 insn16_rel = find_relocs_at_address
12716 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12718 if (insn16_rel != irelend)
12719 insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG;
12724 /* This is the main function of fp-as-gp optimization.
12725 It should be called by relax_section. */
12728 nds32_relax_fp_as_gp (struct bfd_link_info *link_info,
12729 bfd *abfd, asection *sec,
12730 Elf_Internal_Rela *internal_relocs,
12731 Elf_Internal_Rela *irelend,
12732 Elf_Internal_Sym *isymbuf)
12734 Elf_Internal_Rela *begin_rel = NULL;
12735 Elf_Internal_Rela *irel;
12736 struct nds32_fag fag_head;
12737 Elf_Internal_Shdr *symtab_hdr;
12738 bfd_byte *contents;
12739 bfd_boolean ifc_inside = FALSE;
12741 /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */
12743 /* Per-function fp-base selection.
12744 1. Create a list for all the gp-relative access.
12745 2. Base on those gp-relative address,
12746 find a fp-base which can cover most access.
12747 3. Use the fp-base for fp-as-gp relaxation.
12749 NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times),
12751 1. delete the `la $fp, _FP_BASE_' instruction and
12752 2. not convert lwi.gp to lwi37.fp.
12754 To delete the _FP_BASE_ instruction, we simply apply
12755 R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it.
12757 To suppress the conversion, we simply NOT to apply
12758 R_NDS32_INSN16_FP7U2_FLAG flag. */
12760 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12762 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12763 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12766 /* Check whether it is worth for fp-as-gp optimization,
12767 i.e., at least 3 gp-load.
12769 Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT
12770 apply this optimization. */
12772 for (irel = internal_relocs; irel < irelend; irel++)
12774 /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region.
12775 One we enter the begin of the region, we track all the LW/ST
12776 instructions, so when we leave the region, we try to find
12777 the best fp-base address for those LW/ST instructions. */
12779 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12780 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12782 /* Begin of the region. */
12784 _bfd_error_handler (_("%B: Nested OMIT_FP in %A."), abfd, sec);
12787 nds32_fag_init (&fag_head);
12788 ifc_inside = FALSE;
12790 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12791 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12794 struct nds32_fag *best_fag, *tmp_fag;
12797 /* End of the region.
12798 Check whether it is worth to do fp-as-gp. */
12800 if (begin_rel == NULL)
12802 _bfd_error_handler (_("%B: Unmatched OMIT_FP in %A."), abfd, sec);
12806 accu = nds32_fag_find_base (&fag_head, &best_fag);
12808 /* Clean FP7U2_FLAG because they may set ever. */
12809 tmp_fag = fag_head.next;
12810 nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend);
12812 /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */
12813 if (accu < FAG_THRESHOLD
12814 || !nds32_fag_mark_relax (link_info, abfd, best_fag,
12815 internal_relocs, irelend))
12817 /* Not worth to do fp-as-gp. */
12818 begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12819 begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12820 irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12821 irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12822 nds32_fag_free_list (&fag_head);
12827 /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler,
12828 so we use it to record the distance to the reloction of best
12830 dist = best_fag->relas[0] - begin_rel;
12831 BFD_ASSERT (dist > 0 && dist < 0xffffff);
12832 /* Use high 16 bits of addend to record the _FP_BASE_ matched
12833 relocation. And get the base value when relocating. */
12834 begin_rel->r_addend &= (0x1 << 16) - 1;
12835 begin_rel->r_addend |= dist << 16;
12837 nds32_fag_free_list (&fag_head);
12841 if (begin_rel == NULL || ifc_inside)
12842 /* Skip if we are not in the region of fp-as-gp. */
12845 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA
12846 || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA)
12851 /* A gp-relative access is found. Insert it to the fag-list. */
12853 /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */
12854 insn = bfd_getb32 (contents + irel->r_offset);
12855 if (!N32_IS_RT3 (insn))
12858 addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
12859 nds32_fag_insert (&fag_head, addr, irel);
12861 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA)
12865 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12866 || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
12868 /* Suppress fp as gp when encounter ifc. */
12876 /* Remove unused `la $fp, _FD_BASE_' instruction. */
12879 nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec,
12880 Elf_Internal_Rela *internal_relocs,
12881 Elf_Internal_Rela *irelend)
12883 Elf_Internal_Rela *irel;
12884 Elf_Internal_Shdr *symtab_hdr;
12885 bfd_byte *contents = NULL;
12886 nds32_elf_blank_t *relax_blank_list = NULL;
12887 bfd_boolean result = TRUE;
12888 bfd_boolean unused_region = FALSE;
12891 NOTE: Disable fp-as-gp if we encounter ifcall relocations.
12892 * R_NDS32_17IFC_PCREL_RELA
12893 * R_NDS32_10IFCU_PCREL_RELA
12898 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12899 nds32_get_section_contents (abfd, sec, &contents, TRUE);
12901 for (irel = internal_relocs; irel < irelend; irel++)
12903 /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP
12904 we marked to in previous pass.
12905 DO NOT scan relocations again, since we've alreadly decided it
12906 and set the flag. */
12907 const char *syname;
12911 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12912 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12913 unused_region = TRUE;
12914 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12915 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12916 unused_region = FALSE;
12918 /* We're not in the region. */
12919 if (!unused_region)
12922 /* _FP_BASE_ must be a GLOBAL symbol. */
12923 syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
12924 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
12927 /* The symbol name must be _FP_BASE_. */
12928 syname = elf_sym_hashes (abfd)[syndx]->root.root.string;
12929 if (strcmp (syname, FP_BASE_NAME) != 0)
12932 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA)
12934 /* addi.gp $fp, -256 */
12935 insn = bfd_getb32 (contents + irel->r_offset);
12936 if (insn != INSN_ADDIGP_TO_FP)
12939 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA)
12941 /* addi $fp, $gp, -256 */
12942 insn = bfd_getb32 (contents + irel->r_offset);
12943 if (insn != INSN_ADDI_GP_TO_FP)
12946 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA)
12948 /* movi $fp, FP_BASE */
12949 insn = bfd_getb32 (contents + irel->r_offset);
12950 if (insn != INSN_MOVI_TO_FP)
12956 /* We got here because a FP_BASE instruction is found. */
12957 if (!insert_nds32_elf_blank_recalc_total
12958 (&relax_blank_list, irel->r_offset, 4))
12963 if (relax_blank_list)
12965 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12966 relax_blank_list = NULL;
12975 /* This is a version of bfd_generic_get_relocated_section_contents.
12976 We need this variety because relaxation will modify the dwarf
12977 infomation. When there is undefined symbol reference error mesage,
12978 linker need to dump line number where the symbol be used. However
12979 the address is be relaxed, it can not get the original dwarf contents.
12980 The variety only modify function call for reading in the section. */
12983 nds32_elf_get_relocated_section_contents (bfd *abfd,
12984 struct bfd_link_info *link_info,
12985 struct bfd_link_order *link_order,
12987 bfd_boolean relocatable,
12990 bfd *input_bfd = link_order->u.indirect.section->owner;
12991 asection *input_section = link_order->u.indirect.section;
12993 arelent **reloc_vector;
12996 reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
12997 if (reloc_size < 0)
13000 /* Read in the section. */
13001 if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE))
13004 if (reloc_size == 0)
13007 reloc_vector = (arelent **) bfd_malloc (reloc_size);
13008 if (reloc_vector == NULL)
13011 reloc_count = bfd_canonicalize_reloc (input_bfd, input_section,
13012 reloc_vector, symbols);
13013 if (reloc_count < 0)
13016 if (reloc_count > 0)
13019 for (parent = reloc_vector; *parent != NULL; parent++)
13021 char *error_message = NULL;
13023 bfd_reloc_status_type r;
13025 symbol = *(*parent)->sym_ptr_ptr;
13026 if (symbol->section && discarded_section (symbol->section))
13029 static reloc_howto_type none_howto
13030 = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL,
13031 "unused", FALSE, 0, 0, FALSE);
13033 p = data + (*parent)->address * bfd_octets_per_byte (input_bfd);
13034 _bfd_clear_contents ((*parent)->howto, input_bfd, input_section,
13036 (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
13037 (*parent)->addend = 0;
13038 (*parent)->howto = &none_howto;
13042 r = bfd_perform_relocation (input_bfd, *parent, data,
13044 relocatable ? abfd : NULL,
13049 asection *os = input_section->output_section;
13051 /* A partial link, so keep the relocs. */
13052 os->orelocation[os->reloc_count] = *parent;
13056 if (r != bfd_reloc_ok)
13060 case bfd_reloc_undefined:
13061 (*link_info->callbacks->undefined_symbol)
13062 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13063 input_bfd, input_section, (*parent)->address, TRUE);
13065 case bfd_reloc_dangerous:
13066 BFD_ASSERT (error_message != NULL);
13067 (*link_info->callbacks->reloc_dangerous)
13068 (link_info, error_message,
13069 input_bfd, input_section, (*parent)->address);
13071 case bfd_reloc_overflow:
13072 (*link_info->callbacks->reloc_overflow)
13074 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13075 (*parent)->howto->name, (*parent)->addend,
13076 input_bfd, input_section, (*parent)->address);
13078 case bfd_reloc_outofrange:
13080 This error can result when processing some partially
13081 complete binaries. Do not abort, but issue an error
13082 message instead. */
13083 link_info->callbacks->einfo
13084 (_("%X%P: %B(%A): relocation \"%R\" goes out of range\n"),
13085 abfd, input_section, * parent);
13096 free (reloc_vector);
13100 free (reloc_vector);
13104 /* Link-time IFC relaxation.
13105 In this optimization, we chains jump instructions
13106 of the same destination with ifcall. */
13109 /* List to save jal and j relocation. */
13110 struct elf_nds32_ifc_symbol_entry
13113 struct elf_link_hash_entry *h;
13114 struct elf_nds32_ifc_irel_list *irel_head;
13115 unsigned long insn;
13117 int enable; /* Apply ifc. */
13118 int ex9_enable; /* Apply ifc after ex9. */
13119 struct elf_nds32_ifc_symbol_entry *next;
13122 struct elf_nds32_ifc_irel_list
13124 Elf_Internal_Rela *irel;
13127 /* If this is set, then it is the last instruction for
13128 ifc-chain, so it must be keep for the actual branching. */
13130 struct elf_nds32_ifc_irel_list *next;
13133 static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL;
13135 /* Insert symbol of jal and j for ifc. */
13138 nds32_elf_ifc_insert_symbol (asection *sec,
13139 struct elf_link_hash_entry *h,
13140 Elf_Internal_Rela *irel,
13141 unsigned long insn)
13143 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13145 /* Check there is target of existing entry the same as the new one. */
13146 while (ptr != NULL)
13148 if (((h == NULL && ptr->sec == sec
13149 && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info)
13150 && ptr->irel_head->irel->r_addend == irel->r_addend)
13153 && ptr->insn == insn)
13155 /* The same target exist, so insert into list. */
13156 struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head;
13158 while (irel_list->next != NULL)
13159 irel_list = irel_list->next;
13160 irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
13161 irel_list = irel_list->next;
13162 irel_list->irel = irel;
13163 irel_list->keep = 1;
13166 irel_list->sec = NULL;
13168 irel_list->sec = sec;
13169 irel_list->next = NULL;
13172 if (ptr->next == NULL)
13177 /* There is no same target entry, so build a new one. */
13178 if (ifc_symbol_head == NULL)
13180 ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
13181 ptr = ifc_symbol_head;
13185 ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
13190 ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
13191 ptr->irel_head->irel = irel;
13193 ptr->irel_head->keep = 1;
13197 /* Local symbols. */
13199 ptr->irel_head->sec = NULL;
13203 /* Global symbol. */
13205 ptr->irel_head->sec = sec;
13208 ptr->irel_head->next = NULL;
13211 ptr->ex9_enable = 0;
13215 /* Gather all jal and j instructions. */
13218 nds32_elf_ifc_calc (struct bfd_link_info *info,
13219 bfd *abfd, asection *sec)
13221 Elf_Internal_Rela *internal_relocs;
13222 Elf_Internal_Rela *irelend;
13223 Elf_Internal_Rela *irel;
13224 Elf_Internal_Shdr *symtab_hdr;
13225 bfd_byte *contents = NULL;
13226 uint32_t insn, insn_with_reg;
13227 unsigned long r_symndx;
13228 struct elf_link_hash_entry *h;
13229 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
13230 struct elf_nds32_link_hash_table *table;
13231 bfd_boolean ifc_loop_aware;
13233 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
13234 TRUE /* keep_memory */);
13235 irelend = internal_relocs + sec->reloc_count;
13236 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
13238 /* Check if the object enable ifc. */
13239 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
13240 R_NDS32_RELAX_ENTRY);
13244 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
13245 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
13246 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG)))
13249 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
13252 table = nds32_elf_hash_table (info);
13253 ifc_loop_aware = table->ifc_loop_aware;
13254 while (irel != NULL && irel < irelend)
13256 /* Traverse all relocation and gather all of them to build the list. */
13258 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN)
13260 if (ifc_loop_aware == 1
13261 && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)
13263 /* Check the region if loop or not. If it is true and
13264 ifc-loop-aware is true, ignore the region till region end. */
13265 while (irel != NULL
13267 && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
13268 || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0))
13273 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
13275 insn = bfd_getb32 (contents + irel->r_offset);
13276 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
13277 r_symndx = ELF32_R_SYM (irel->r_info);
13278 if (r_symndx < symtab_hdr->sh_info)
13280 /* Local symbol. */
13281 nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg);
13285 /* External symbol. */
13286 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
13287 nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg);
13295 /* Determine whether j and jal should be substituted. */
13298 nds32_elf_ifc_filter (struct bfd_link_info *info)
13300 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13301 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13302 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13303 struct elf_nds32_link_hash_table *table;
13304 int target_optimize;
13307 table = nds32_elf_hash_table (info);
13308 target_optimize = table->target_optimize;
13311 irel_ptr = ptr->irel_head;
13312 if (ptr->h == NULL)
13314 /* Local symbol. */
13315 irel_keeper = irel_ptr;
13316 while (irel_ptr && irel_ptr->next)
13318 /* Check there is jump target can be used. */
13319 if ((irel_ptr->next->irel->r_offset
13320 - irel_keeper->irel->r_offset) > 1022)
13321 irel_keeper = irel_ptr->next;
13325 irel_ptr->keep = 0;
13327 irel_ptr = irel_ptr->next;
13332 /* Global symbol. */
13333 /* We have to get the absolute address and decide
13334 whether to keep it or not. */
13337 address = (irel_ptr->irel->r_offset
13338 + irel_ptr->sec->output_section->vma
13339 + irel_ptr->sec->output_offset);
13340 irel_ptr->addr = address;
13341 irel_ptr = irel_ptr->next;
13344 irel_ptr = ptr->irel_head;
13347 /* Sort by address. */
13348 struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr;
13349 struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr;
13350 struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL;
13351 struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL;
13353 /* Get the smallest one. */
13354 while (irel_temp->next)
13356 if (irel_temp->next->addr < irel_dest->addr)
13358 irel_dest_prev = irel_temp;
13359 irel_dest = irel_temp->next;
13361 irel_temp = irel_temp->next;
13364 if (irel_dest != irel_ptr)
13367 irel_ptr_prev->next = irel_dest;
13368 if (irel_dest_prev)
13369 irel_dest_prev->next = irel_ptr;
13370 irel_temp = irel_ptr->next;
13371 irel_ptr->next = irel_dest->next;
13372 irel_dest->next = irel_temp;
13374 irel_ptr_prev = irel_ptr;
13375 irel_ptr = irel_ptr->next;
13378 irel_ptr = ptr->irel_head;
13379 irel_keeper = irel_ptr;
13380 while (irel_ptr && irel_ptr->next)
13382 if ((irel_ptr->next->addr - irel_keeper->addr) > 1022)
13383 irel_keeper = irel_ptr->next;
13387 irel_ptr->keep = 0;
13389 irel_ptr = irel_ptr->next;
13393 /* Ex9 enable. Reserve it for ex9. */
13394 if ((target_optimize & NDS32_RELAX_EX9_ON)
13395 && ptr->irel_head != irel_keeper)
13401 /* Determine whether j and jal should be substituted after ex9 done. */
13404 nds32_elf_ifc_filter_after_ex9 (void)
13406 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13407 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13411 if (ptr->enable == 0)
13413 /* Check whether ifc is applied or not. */
13414 irel_ptr = ptr->irel_head;
13415 ptr->ex9_enable = 1;
13418 if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN)
13421 ptr->ex9_enable = 0;
13424 irel_ptr = irel_ptr->next;
13431 /* Wrapper to do ifc relaxation. */
13434 nds32_elf_ifc_finish (struct bfd_link_info *info)
13437 struct elf_nds32_link_hash_table *table;
13439 table = nds32_elf_hash_table (info);
13440 relax_status = table->relax_status;
13442 if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE))
13443 nds32_elf_ifc_filter (info);
13445 nds32_elf_ifc_filter_after_ex9 ();
13447 if (!nds32_elf_ifc_replace (info))
13451 table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE;
13455 /* Traverse the result of ifc filter and replace it with ifcall9. */
13458 nds32_elf_ifc_replace (struct bfd_link_info *info)
13460 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13461 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13462 nds32_elf_blank_t *relax_blank_list = NULL;
13463 bfd_byte *contents = NULL;
13464 Elf_Internal_Rela *internal_relocs;
13465 Elf_Internal_Rela *irel;
13466 Elf_Internal_Rela *irelend;
13467 unsigned short insn16 = INSN_IFCALL9;
13468 struct elf_nds32_link_hash_table *table;
13471 table = nds32_elf_hash_table (info);
13472 relax_status = table->relax_status;
13476 /* Traverse the ifc gather list, and replace the
13477 filter entries by ifcall9. */
13478 if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1)
13479 || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE)
13480 && ptr->ex9_enable == 1))
13482 irel_ptr = ptr->irel_head;
13483 if (ptr->h == NULL)
13485 /* Local symbol. */
13486 internal_relocs = _bfd_elf_link_read_relocs
13487 (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */);
13488 irelend = internal_relocs + ptr->sec->reloc_count;
13490 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13496 if (irel_ptr->keep == 0 && irel_ptr->next)
13498 /* The one can be replaced. We have to check whether
13499 there is any alignment point in the region. */
13500 irel = irel_ptr->irel;
13501 while (((irel_ptr->next->keep == 0
13502 && irel < irel_ptr->next->irel)
13503 || (irel_ptr->next->keep == 1 && irel < irelend))
13504 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13505 && (irel->r_addend & 0x1f) == 2))
13507 if (irel >= irelend
13508 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13509 && (irel->r_addend & 0x1f) == 2
13510 && ((irel->r_offset - get_nds32_elf_blank_total
13511 (&relax_blank_list, irel->r_offset, 1))
13514 /* Replace by ifcall9. */
13515 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13516 if (!insert_nds32_elf_blank_recalc_total
13517 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13519 irel_ptr->irel->r_info =
13520 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13521 R_NDS32_10IFCU_PCREL_RELA);
13524 irel_ptr = irel_ptr->next;
13527 /* Delete the redundant code. */
13528 if (relax_blank_list)
13530 nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec,
13532 relax_blank_list = NULL;
13537 /* Global symbol. */
13540 if (irel_ptr->keep == 0 && irel_ptr->next)
13542 /* The one can be replaced, and we have to check
13543 whether there is any alignment point in the region. */
13544 internal_relocs = _bfd_elf_link_read_relocs
13545 (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL,
13546 TRUE /* keep_memory */);
13547 irelend = internal_relocs + irel_ptr->sec->reloc_count;
13548 if (!nds32_get_section_contents (irel_ptr->sec->owner,
13549 irel_ptr->sec, &contents,
13553 irel = irel_ptr->irel;
13554 while (((irel_ptr->sec == irel_ptr->next->sec
13555 && irel_ptr->next->keep == 0
13556 && irel < irel_ptr->next->irel)
13557 || ((irel_ptr->sec != irel_ptr->next->sec
13558 || irel_ptr->next->keep == 1)
13559 && irel < irelend))
13560 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13561 && (irel->r_addend & 0x1f) == 2))
13563 if (irel >= irelend
13564 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13565 && (irel->r_addend & 0x1f) == 2
13566 && ((irel->r_offset
13567 - get_nds32_elf_blank_total (&relax_blank_list,
13568 irel->r_offset, 1)) & 0x02) == 0))
13570 /* Replace by ifcall9. */
13571 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13572 if (!insert_nds32_elf_blank_recalc_total
13573 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13576 /* Delete the redundant code, and clear the relocation. */
13577 nds32_elf_relax_delete_blanks (irel_ptr->sec->owner,
13580 irel_ptr->irel->r_info =
13581 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13582 R_NDS32_10IFCU_PCREL_RELA);
13583 relax_blank_list = NULL;
13587 irel_ptr = irel_ptr->next;
13597 /* Relocate ifcall. */
13600 nds32_elf_ifc_reloc (void)
13602 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13603 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13604 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13605 bfd_vma relocation, address;
13606 unsigned short insn16;
13607 bfd_byte *contents = NULL;
13608 static bfd_boolean done = FALSE;
13617 /* Check the entry is enable ifcall. */
13618 if (ptr->enable == 1 || ptr->ex9_enable == 1)
13620 /* Get the reserve jump. */
13621 irel_ptr = ptr->irel_head;
13624 if (irel_ptr->keep == 1)
13626 irel_keeper = irel_ptr;
13629 irel_ptr = irel_ptr->next;
13632 irel_ptr = ptr->irel_head;
13633 if (ptr->h == NULL)
13635 /* Local symbol. */
13636 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13642 if (irel_ptr->keep == 0
13643 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13645 relocation = irel_keeper->irel->r_offset;
13646 relocation = relocation - irel_ptr->irel->r_offset;
13647 while (irel_keeper && relocation > 1022)
13649 irel_keeper = irel_keeper->next;
13650 if (irel_keeper && irel_keeper->keep == 1)
13652 relocation = irel_keeper->irel->r_offset;
13653 relocation = relocation - irel_ptr->irel->r_offset;
13656 if (relocation > 1022)
13658 /* Double check. */
13659 irel_keeper = ptr->irel_head;
13660 while (irel_keeper)
13662 if (irel_keeper->keep == 1)
13664 relocation = irel_keeper->irel->r_offset;
13665 relocation = relocation - irel_ptr->irel->r_offset;
13667 if (relocation <= 1022)
13669 irel_keeper = irel_keeper->next;
13674 irel_ptr->irel->r_info =
13675 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13677 insn16 = INSN_IFCALL9 | (relocation >> 1);
13678 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13680 irel_ptr = irel_ptr->next;
13685 /* Global symbol. */
13688 if (irel_ptr->keep == 0
13689 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13691 /* Get the distance between ifcall and jump. */
13692 relocation = (irel_keeper->irel->r_offset
13693 + irel_keeper->sec->output_section->vma
13694 + irel_keeper->sec->output_offset);
13695 address = (irel_ptr->irel->r_offset
13696 + irel_ptr->sec->output_section->vma
13697 + irel_ptr->sec->output_offset);
13698 relocation = relocation - address;
13700 /* The distance is over ragne, find callee again. */
13701 while (irel_keeper && relocation > 1022)
13703 irel_keeper = irel_keeper->next;
13704 if (irel_keeper && irel_keeper->keep ==1)
13706 relocation = (irel_keeper->irel->r_offset
13707 + irel_keeper->sec->output_section->vma
13708 + irel_keeper->sec->output_offset);
13709 relocation = relocation - address;
13713 if (relocation > 1022)
13715 /* Double check. */
13716 irel_keeper = ptr->irel_head;
13717 while (irel_keeper)
13719 if (irel_keeper->keep == 1)
13722 relocation = (irel_keeper->irel->r_offset
13723 + irel_keeper->sec->output_section->vma
13724 + irel_keeper->sec->output_offset);
13725 relocation = relocation - address;
13727 if (relocation <= 1022)
13729 irel_keeper = irel_keeper->next;
13734 if (!nds32_get_section_contents
13735 (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE))
13737 insn16 = INSN_IFCALL9 | (relocation >> 1);
13738 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13739 irel_ptr->irel->r_info =
13740 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13743 irel_ptr =irel_ptr->next;
13753 /* End of IFC relaxation. */
13755 /* EX9 Instruction Table Relaxation. */
13757 /* Global hash list. */
13758 struct elf_link_hash_entry_list
13760 struct elf_link_hash_entry *h;
13761 struct elf_link_hash_entry_list *next;
13764 /* Save different destination but same insn. */
13765 struct elf_link_hash_entry_mul_list
13767 /* Global symbol times. */
13769 /* Save relocation for each global symbol but useful?? */
13770 Elf_Internal_Rela *irel;
13771 /* For sethi, two sethi may have the same high-part but different low-parts. */
13772 Elf_Internal_Rela rel_backup;
13773 struct elf_link_hash_entry_list *h_list;
13774 struct elf_link_hash_entry_mul_list *next;
13777 /* Instruction hash table. */
13778 struct elf_nds32_code_hash_entry
13780 struct bfd_hash_entry root;
13782 /* For insn that can use relocation or constant ex: sethi. */
13785 struct elf_link_hash_entry_mul_list *m_list;
13786 /* Using r_addend. */
13787 Elf_Internal_Rela *irel;
13788 /* Using r_info. */
13789 Elf_Internal_Rela rel_backup;
13792 /* Instruction count list. */
13793 struct elf_nds32_insn_times_entry
13795 const char *string;
13799 struct elf_link_hash_entry_mul_list *m_list;
13800 Elf_Internal_Rela *irel;
13801 Elf_Internal_Rela rel_backup;
13802 struct elf_nds32_insn_times_entry *next;
13805 /* J and JAL symbol list. */
13806 struct elf_nds32_symbol_entry
13809 unsigned long insn;
13810 struct elf_nds32_symbol_entry *next;
13813 /* Relocation list. */
13814 struct elf_nds32_irel_entry
13816 Elf_Internal_Rela *irel;
13817 struct elf_nds32_irel_entry *next;
13820 /* ex9.it insn need to be fixed. */
13821 struct elf_nds32_ex9_refix
13823 Elf_Internal_Rela *irel;
13825 struct elf_link_hash_entry *h;
13827 struct elf_nds32_ex9_refix *next;
13830 static struct bfd_hash_table ex9_code_table;
13831 static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL;
13832 static struct elf_nds32_ex9_refix *ex9_refix_head = NULL;
13834 /* EX9 hash function. */
13836 static struct bfd_hash_entry *
13837 nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry,
13838 struct bfd_hash_table *table,
13839 const char *string)
13841 struct elf_nds32_code_hash_entry *ret;
13843 /* Allocate the structure if it has not already been allocated by a
13847 entry = (struct bfd_hash_entry *)
13848 bfd_hash_allocate (table, sizeof (*ret));
13853 /* Call the allocation method of the superclass. */
13854 entry = bfd_hash_newfunc (entry, table, string);
13858 ret = (struct elf_nds32_code_hash_entry*) entry;
13860 ret->const_insn = 0;
13861 ret->m_list = NULL;
13867 /* Insert ex9 entry
13868 this insert must be stable sorted by times. */
13871 nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr)
13873 struct elf_nds32_insn_times_entry *temp;
13874 struct elf_nds32_insn_times_entry *temp2;
13876 if (ex9_insn_head == NULL)
13878 ex9_insn_head = ptr;
13883 temp = ex9_insn_head;
13884 temp2 = ex9_insn_head;
13885 while (temp->next &&
13886 (temp->next->times >= ptr->times
13887 || temp->times == -1))
13889 if (temp->times == -1)
13893 if (ptr->times > temp->times && temp->times != -1)
13896 if (temp2->times == -1)
13899 ex9_insn_head = ptr;
13901 else if (temp->next == NULL)
13908 ptr->next = temp->next;
13914 /* Examine each insn times in hash table.
13915 Handle multi-link hash entry.
13917 TODO: This function doesn't assign so much info since it is fake. */
13920 nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h)
13922 struct elf_nds32_insn_times_entry *ptr;
13925 if (h->m_list == NULL)
13927 /* Local symbol insn or insn without relocation. */
13931 ptr = (struct elf_nds32_insn_times_entry *)
13932 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13933 ptr->times = h->times;
13934 ptr->string = h->root.string;
13935 ptr->m_list = NULL;
13937 ptr->irel = h->irel;
13938 ptr->rel_backup = h->rel_backup;
13939 nds32_elf_ex9_insert_entry (ptr);
13943 /* Global symbol insn. */
13944 /* Only sethi insn has multiple m_list. */
13945 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
13950 times += m_list->times;
13951 m_list = m_list->next;
13955 m_list = h->m_list;
13956 ptr = (struct elf_nds32_insn_times_entry *)
13957 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13958 ptr->times = times; /* Use the total times. */
13959 ptr->string = h->root.string;
13960 ptr->m_list = m_list;
13962 ptr->irel = m_list->irel;
13963 ptr->rel_backup = m_list->rel_backup;
13964 nds32_elf_ex9_insert_entry (ptr);
13966 if (h->const_insn == 1)
13968 /* sethi with constant value. */
13972 ptr = (struct elf_nds32_insn_times_entry *)
13973 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13974 ptr->times = h->times;
13975 ptr->string = h->root.string;
13976 ptr->m_list = NULL;
13979 ptr->rel_backup = h->rel_backup;
13980 nds32_elf_ex9_insert_entry (ptr);
13986 /* Count each insn times in hash table.
13987 Handle multi-link hash entry. */
13990 nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h)
13992 int reservation, times;
13993 unsigned long relocation, min_relocation;
13994 struct elf_nds32_insn_times_entry *ptr;
13996 if (h->m_list == NULL)
13998 /* Local symbol insn or insn without relocation. */
14001 ptr = (struct elf_nds32_insn_times_entry *)
14002 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14003 ptr->times = h->times;
14004 ptr->string = h->root.string;
14005 ptr->m_list = NULL;
14007 ptr->irel = h->irel;
14008 ptr->rel_backup = h->rel_backup;
14009 nds32_elf_ex9_insert_entry (ptr);
14013 /* Global symbol insn. */
14014 /* Only sethi insn has multiple m_list. */
14015 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
14017 if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA
14018 && m_list->next != NULL)
14020 /* Sethi insn has different symbol or addend but has same hi20. */
14024 min_relocation = 0xffffffff;
14027 /* Get the minimum sethi address
14028 and calculate how many entry the sethi-list have to use. */
14029 if ((m_list->h_list->h->root.type == bfd_link_hash_defined
14030 || m_list->h_list->h->root.type == bfd_link_hash_defweak)
14031 && (m_list->h_list->h->root.u.def.section != NULL
14032 && m_list->h_list->h->root.u.def.section->output_section != NULL))
14034 relocation = (m_list->h_list->h->root.u.def.value +
14035 m_list->h_list->h->root.u.def.section->output_section->vma +
14036 m_list->h_list->h->root.u.def.section->output_offset);
14037 relocation += m_list->irel->r_addend;
14041 if (relocation < min_relocation)
14042 min_relocation = relocation;
14043 times += m_list->times;
14044 m_list = m_list->next;
14046 if (min_relocation < ex9_relax_size)
14047 reservation = (min_relocation >> 12) + 1;
14049 reservation = (min_relocation >> 12)
14050 - ((min_relocation - ex9_relax_size) >> 12) + 1;
14051 if (reservation < (times / 3))
14053 /* Efficient enough to use ex9. */
14056 for (i = reservation ; i > 0; i--)
14058 /* Allocate number of reservation ex9 entry. */
14059 ptr = (struct elf_nds32_insn_times_entry *)
14060 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14061 ptr->times = h->m_list->times / reservation;
14062 ptr->string = h->root.string;
14063 ptr->m_list = h->m_list;
14065 ptr->irel = h->m_list->irel;
14066 ptr->rel_backup = h->m_list->rel_backup;
14067 nds32_elf_ex9_insert_entry (ptr);
14073 /* Normal global symbol that means no different address symbol
14074 using same ex9 entry. */
14075 if (m_list->times >= 3)
14077 ptr = (struct elf_nds32_insn_times_entry *)
14078 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14079 ptr->times = m_list->times;
14080 ptr->string = h->root.string;
14081 ptr->m_list = h->m_list;
14083 ptr->irel = h->m_list->irel;
14084 ptr->rel_backup = h->m_list->rel_backup;
14085 nds32_elf_ex9_insert_entry (ptr);
14089 if (h->const_insn == 1)
14091 /* sethi with constant value. */
14095 ptr = (struct elf_nds32_insn_times_entry *)
14096 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14097 ptr->times = h->times;
14098 ptr->string = h->root.string;
14099 ptr->m_list = NULL;
14102 ptr->rel_backup = h->rel_backup;
14103 nds32_elf_ex9_insert_entry (ptr);
14110 /* Hash table traverse function. */
14113 nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*))
14117 ex9_code_table.frozen = 1;
14118 for (i = 0; i < ex9_code_table.size; i++)
14120 struct bfd_hash_entry *p;
14122 for (p = ex9_code_table.table[i]; p != NULL; p = p->next)
14123 if (!func ((struct elf_nds32_code_hash_entry *) p))
14127 ex9_code_table.frozen = 0;
14131 /* Give order number to insn list. */
14134 nds32_elf_order_insn_times (struct bfd_link_info *info)
14136 struct elf_nds32_insn_times_entry *ex9_insn;
14137 struct elf_nds32_insn_times_entry *temp = NULL;
14138 struct elf_nds32_link_hash_table *table;
14142 if (ex9_insn_head == NULL)
14145 /* The max number of entries is 512. */
14146 ex9_insn = ex9_insn_head;
14147 table = nds32_elf_hash_table (info);
14148 ex9_limit = table->ex9_limit;
14150 ex9_insn = ex9_insn_head;
14152 while (ex9_insn != NULL && number < ex9_limit)
14154 ex9_insn->order = number;
14157 ex9_insn = ex9_insn->next;
14160 if (ex9_insn && temp)
14163 while (ex9_insn != NULL)
14165 /* Free useless entry. */
14167 ex9_insn = ex9_insn->next;
14172 /* Build .ex9.itable section. */
14175 nds32_elf_ex9_build_itable (struct bfd_link_info *link_info)
14177 asection *table_sec;
14178 struct elf_nds32_insn_times_entry *ptr;
14181 bfd_byte *contents = NULL;
14183 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
14184 it_abfd = it_abfd->link.next)
14186 /* Find the section .ex9.itable, and put all entries into it. */
14187 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
14188 if (table_sec != NULL)
14190 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
14193 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
14196 table_sec->size = number * 4;
14201 elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST;
14203 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
14207 val = strtol (ptr->string, NULL, 16);
14208 bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4));
14216 /* Get insn with regs according to relocation type. */
14219 nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel,
14220 uint32_t insn, uint32_t *insn_with_reg)
14222 reloc_howto_type *howto = NULL;
14225 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
14226 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
14227 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
14229 *insn_with_reg = insn;
14233 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
14234 *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask);
14237 /* Mask number of address bits according to relocation. */
14239 static unsigned long
14240 nds32_elf_irel_mask (Elf_Internal_Rela *irel)
14242 reloc_howto_type *howto = NULL;
14245 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
14246 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
14247 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
14250 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
14251 return howto->dst_mask;
14255 nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list,
14256 struct elf_nds32_irel_entry *irel_ptr)
14258 if (*irel_list == NULL)
14260 *irel_list = irel_ptr;
14261 irel_ptr->next = NULL;
14265 irel_ptr->next = *irel_list;
14266 *irel_list = irel_ptr;
14271 nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel,
14272 struct elf_link_hash_entry *h, int order)
14274 struct elf_nds32_ex9_refix *ptr;
14276 ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix));
14280 ptr->order = order;
14283 if (ex9_refix_head == NULL)
14284 ex9_refix_head = ptr;
14287 struct elf_nds32_ex9_refix *temp = ex9_refix_head;
14289 while (temp->next != NULL)
14298 CLEAN_PRE = 1 << 1,
14302 /* Check relocation type if supporting for ex9. */
14305 nds32_elf_ex9_relocation_check (struct bfd_link_info *info,
14306 Elf_Internal_Rela **irel,
14307 Elf_Internal_Rela *irelend,
14308 nds32_elf_blank_t *relax_blank_list,
14309 asection *sec,bfd_vma *off,
14310 bfd_byte *contents)
14312 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
14313 bfd_boolean nested_ex9, nested_loop;
14314 bfd_boolean ex9_loop_aware;
14315 /* We use the highest 1 byte of result to record
14316 how many bytes location counter has to move. */
14318 Elf_Internal_Rela *irel_save = NULL;
14319 struct elf_nds32_link_hash_table *table;
14321 table = nds32_elf_hash_table (info);
14322 ex9_loop_aware = table->ex9_loop_aware;
14324 while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset)
14326 switch (ELF32_R_TYPE ((*irel)->r_info))
14328 case R_NDS32_RELAX_REGION_BEGIN:
14329 /* Ignore code block. */
14330 nested_ex9 = FALSE;
14331 nested_loop = FALSE;
14332 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG)
14334 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)))
14336 /* Check the region if loop or not. If it is true and
14337 ex9-loop-aware is true, ignore the region till region end. */
14338 /* To save the status for in .no_relax ex9 region and
14339 loop region to conform the block can do ex9 relaxation. */
14340 nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG);
14341 nested_loop = (ex9_loop_aware
14342 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG));
14343 while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop))
14346 if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN)
14348 /* There may be nested region. */
14349 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14351 else if (ex9_loop_aware
14352 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14353 nested_loop = TRUE;
14355 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END)
14357 /* The end of region. */
14358 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14359 nested_ex9 = FALSE;
14360 else if (ex9_loop_aware
14361 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14362 nested_loop = FALSE;
14364 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL
14365 && ((*irel)->r_addend & 0x1f) == 2)
14367 /* Alignment exist in the region. */
14368 result |= CLEAN_PRE;
14369 if (((*irel)->r_offset -
14370 get_nds32_elf_blank_total (&relax_blank_list,
14371 (*irel)->r_offset, 0)) & 0x02)
14372 result |= PUSH_PRE;
14375 if ((*irel) >= irelend)
14378 *off = (*irel)->r_offset;
14380 /* The final instruction in the region, regard this one as data to ignore it. */
14381 result |= DATA_EXIST;
14386 case R_NDS32_LABEL:
14387 if (((*irel)->r_addend & 0x1f) == 2)
14389 /* Check this point is align and decide to do ex9 or not. */
14390 result |= CLEAN_PRE;
14391 if (((*irel)->r_offset -
14392 get_nds32_elf_blank_total (&relax_blank_list,
14393 (*irel)->r_offset, 0)) & 0x02)
14394 result |= PUSH_PRE;
14397 case R_NDS32_32_RELA:
14399 result |= (4 << 24);
14400 result |= DATA_EXIST;
14402 case R_NDS32_16_RELA:
14404 result |= (2 << 24);
14405 result |= DATA_EXIST;
14409 /* The least code alignment is 2. If the data is only one byte,
14410 we have to shift one more byte. */
14411 if ((*irel)->r_addend == 1)
14412 result |= ((*irel)->r_addend << 25) ;
14414 result |= ((*irel)->r_addend << 24) ;
14416 result |= DATA_EXIST;
14419 case R_NDS32_25_PCREL_RELA:
14420 case R_NDS32_SDA16S3_RELA:
14421 case R_NDS32_SDA15S3_RELA:
14422 case R_NDS32_SDA15S3:
14423 case R_NDS32_SDA17S2_RELA:
14424 case R_NDS32_SDA15S2_RELA:
14425 case R_NDS32_SDA12S2_SP_RELA:
14426 case R_NDS32_SDA12S2_DP_RELA:
14427 case R_NDS32_SDA15S2:
14428 case R_NDS32_SDA18S1_RELA:
14429 case R_NDS32_SDA15S1_RELA:
14430 case R_NDS32_SDA15S1:
14431 case R_NDS32_SDA19S0_RELA:
14432 case R_NDS32_SDA15S0_RELA:
14433 case R_NDS32_SDA15S0:
14434 case R_NDS32_HI20_RELA:
14435 case R_NDS32_LO12S0_ORI_RELA:
14436 case R_NDS32_LO12S0_RELA:
14437 case R_NDS32_LO12S1_RELA:
14438 case R_NDS32_LO12S2_RELA:
14439 /* These relocation is supported ex9 relaxation currently. */
14440 /* We have to save the relocation for using later, since we have
14441 to check there is any alignment in the same address. */
14445 /* Not support relocations. */
14446 if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table)
14447 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE
14448 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16)
14450 /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here.
14451 But we have to consider if there is any side-effect. */
14452 if (!(result & DATA_EXIST))
14454 /* We have to confirm there is no data relocation in the
14455 same address. In general case, this won't happen. */
14456 /* We have to do ex9 conservative, for those relocation not
14457 considerd we ignore instruction. */
14458 result |= DATA_EXIST;
14459 if (*(contents + *off) & 0x80)
14460 result |= (2 << 24);
14462 result |= (4 << 24);
14467 if ((*irel) < irelend
14468 && ((*irel) + 1) < irelend
14469 && (*irel)->r_offset == ((*irel) + 1)->r_offset)
14470 /* There are relocations pointing to the same address, we have to
14471 check all of them. */
14483 /* Replace with ex9 instruction. */
14486 nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off,
14487 nds32_elf_blank_t **relax_blank_list,
14488 struct elf_nds32_irel_entry *pre_irel_ptr,
14489 struct elf_nds32_irel_entry **irel_list)
14493 /* Implement the ex9 relaxation. */
14494 bfd_putb16 (insn16, contents + pre_off);
14495 if (!insert_nds32_elf_blank_recalc_total (relax_blank_list,
14498 if (pre_irel_ptr != NULL)
14499 nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr);
14504 /* Replace input file instruction which is in ex9 itable. */
14507 nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec)
14509 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
14510 bfd_byte *contents = NULL;
14512 uint16_t insn16, insn_ex9;
14513 /* `pre_*' are used to track previous instruction that can use ex9.it. */
14514 bfd_vma pre_off = -1;
14515 uint16_t pre_insn16 = 0;
14516 struct elf_nds32_irel_entry *pre_irel_ptr = NULL;
14517 Elf_Internal_Rela *internal_relocs;
14518 Elf_Internal_Rela *irel;
14519 Elf_Internal_Rela *irelend;
14520 Elf_Internal_Shdr *symtab_hdr;
14521 Elf_Internal_Sym *isym = NULL;
14522 nds32_elf_blank_t *relax_blank_list = NULL;
14524 uint32_t insn_with_reg = 0;
14526 uint32_t it_insn_with_reg;
14527 unsigned long r_symndx;
14529 struct elf_nds32_irel_entry *irel_list = NULL;
14530 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
14531 int data_flag, do_replace, save_irel;
14532 struct elf_link_hash_entry_list *h_list;
14535 /* Load section instructions, relocations, and symbol table. */
14536 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
14537 || !nds32_get_local_syms (abfd, sec, &isym))
14540 _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */);
14541 irelend = internal_relocs + sec->reloc_count;
14542 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
14546 /* Check if the object enable ex9. */
14547 irel = find_relocs_at_address (internal_relocs, internal_relocs,
14548 irelend, R_NDS32_RELAX_ENTRY);
14550 /* Check this section trigger ex9 relaxation. */
14553 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
14554 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
14555 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
14558 irel = internal_relocs;
14560 /* Check alignment and fetch proper relocation. */
14561 while (off < sec->size)
14563 struct elf_link_hash_entry *h = NULL;
14564 struct elf_nds32_irel_entry *irel_ptr = NULL;
14566 /* Syn the instruction and the relocation. */
14567 while (irel != NULL && irel < irelend && irel->r_offset < off)
14570 data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend,
14571 relax_blank_list, sec,
14573 if (data_flag & PUSH_PRE)
14574 if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14575 &relax_blank_list, pre_irel_ptr,
14579 if (data_flag & CLEAN_PRE)
14583 pre_irel_ptr = NULL;
14585 if (data_flag & DATA_EXIST)
14587 /* We save the move offset in the highest byte. */
14588 off += (data_flag >> 24);
14592 if (*(contents + off) & 0x80)
14594 /* 2-byte instruction. */
14599 /* Load the instruction and its opcode with register for comparing. */
14600 ex9_insn = ex9_insn_head;
14601 insn = bfd_getb32 (contents + off);
14605 it_insn = strtol (ex9_insn->string, NULL, 16);
14606 it_insn_with_reg = 0;
14610 if (irel != NULL && irel < irelend && irel->r_offset == off)
14612 /* Insn with relocation. */
14613 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
14615 if (ex9_insn->irel != NULL)
14616 nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn,
14617 &it_insn_with_reg);
14619 if (ex9_insn->irel != NULL
14620 && (ELF32_R_TYPE (irel->r_info) ==
14621 ELF32_R_TYPE (ex9_insn->irel->r_info))
14622 && (insn_with_reg == it_insn_with_reg))
14624 /* Insn relocation and format is the same as table entry. */
14626 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
14627 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
14628 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
14629 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
14630 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
14631 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
14632 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
14633 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
14634 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
14635 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
14636 && ELF32_R_TYPE (irel->r_info) <=
14637 R_NDS32_SDA12S2_SP_RELA)
14638 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
14639 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
14641 r_symndx = ELF32_R_SYM (irel->r_info);
14642 if (r_symndx < symtab_hdr->sh_info)
14644 /* Local symbol. */
14645 int shndx = isym[r_symndx].st_shndx;
14647 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14648 if (ex9_insn->sec == isec
14649 && ex9_insn->irel->r_addend == irel->r_addend
14650 && ex9_insn->irel->r_info == irel->r_info)
14658 /* External symbol. */
14659 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14660 if (ex9_insn->m_list)
14662 h_list = ex9_insn->m_list->h_list;
14666 && (ex9_insn->m_list->irel->r_addend ==
14673 h_list = h_list->next;
14678 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA)
14680 r_symndx = ELF32_R_SYM (irel->r_info);
14681 if (r_symndx < symtab_hdr->sh_info)
14683 /* Local symbols. Compare its base symbol and offset. */
14684 int shndx = isym[r_symndx].st_shndx;
14686 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14687 if (ex9_insn->sec == isec
14688 && ex9_insn->irel->r_addend == irel->r_addend
14689 && ex9_insn->irel->r_info == irel->r_info)
14697 /* External symbol. */
14698 struct elf_link_hash_entry_mul_list *m_list;
14700 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14701 m_list = ex9_insn->m_list;
14705 h_list = m_list->h_list;
14710 && (m_list->irel->r_addend
14711 == irel->r_addend))
14716 && ex9_insn->m_list
14717 && ex9_insn->m_list == ex9_insn->next->m_list)
14719 /* sethi multiple entry must be fixed */
14720 nds32_elf_ex9_insert_fix (sec, irel,
14721 h, ex9_insn->order);
14725 h_list = h_list->next;
14727 m_list = m_list->next;
14733 /* Import table: Check the symbol hash table and the
14734 jump target. Only R_NDS32_25_PCREL_RELA now. */
14735 else if (ex9_insn->times == -1
14736 && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
14738 nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg);
14739 if (insn_with_reg == it_insn_with_reg)
14742 bfd_vma relocation;
14744 r_symndx = ELF32_R_SYM (irel->r_info);
14745 if (r_symndx >= symtab_hdr->sh_info)
14747 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14748 if ((h->root.type == bfd_link_hash_defined
14749 || h->root.type == bfd_link_hash_defweak)
14750 && h->root.u.def.section != NULL
14751 && h->root.u.def.section->output_section != NULL
14752 && h->root.u.def.section->gc_mark == 1
14753 && bfd_is_abs_section (h->root.u.def.section)
14754 && h->root.u.def.value > sec->size)
14756 relocation = h->root.u.def.value +
14757 h->root.u.def.section->output_section->vma +
14758 h->root.u.def.section->output_offset;
14759 relocation += irel->r_addend;
14760 insn = insn_with_reg
14761 | ((relocation >> 1) & 0xffffff);
14762 snprintf (code, sizeof (code), "%08x", insn);
14763 if (strcmp (code, ex9_insn->string) == 0)
14772 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
14773 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
14774 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
14776 /* These relocations do not have to relocate contens, so it can
14777 be regard as instruction without relocation. */
14778 if (insn == it_insn && ex9_insn->irel == NULL)
14784 /* Instruction without relocation, we only
14785 have to compare their byte code. */
14786 if (insn == it_insn && ex9_insn->irel == NULL)
14790 /* Insntruction match so replacing the code here. */
14791 if (do_replace == 1)
14793 /* There are two formats of ex9 instruction. */
14794 if (ex9_insn->order < 32)
14795 insn_ex9 = INSN_EX9_IT_2;
14797 insn_ex9 = INSN_EX9_IT_1;
14798 insn16 = insn_ex9 | ex9_insn->order;
14800 /* Insert ex9 instruction. */
14801 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14802 &relax_blank_list, pre_irel_ptr,
14805 pre_insn16 = insn16;
14809 /* For instuction with relocation do relax. */
14810 irel_ptr = (struct elf_nds32_irel_entry *)
14811 bfd_malloc (sizeof (struct elf_nds32_irel_entry));
14812 irel_ptr->irel = irel;
14813 irel_ptr->next = NULL;
14814 pre_irel_ptr = irel_ptr;
14817 pre_irel_ptr = NULL;
14820 ex9_insn = ex9_insn->next;
14825 /* Insert ex9 instruction. */
14826 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14827 &relax_blank_list, pre_irel_ptr,
14830 /* Delete the redundant code. */
14831 if (relax_blank_list)
14833 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
14834 relax_blank_list = NULL;
14837 /* Clear the relocation that is replaced by ex9. */
14840 struct elf_nds32_irel_entry *irel_ptr;
14842 irel_ptr = irel_list;
14843 irel_list = irel_ptr->next;
14844 irel_ptr->irel->r_info =
14845 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN);
14851 /* Initialize ex9 hash table. */
14854 nds32_elf_ex9_init (void)
14856 if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc,
14857 sizeof (struct elf_nds32_code_hash_entry),
14860 _bfd_error_handler (_("Linker: cannot init ex9 hash table error \n"));
14866 /* Predict how many bytes will be relaxed with ex9 and ifc. */
14869 nds32_elf_ex9_total_relax (struct bfd_link_info *info)
14871 struct elf_nds32_insn_times_entry *ex9_insn;
14872 struct elf_nds32_insn_times_entry *temp;
14873 int target_optimize;
14874 struct elf_nds32_link_hash_table *table;
14876 if (ex9_insn_head == NULL)
14879 table = nds32_elf_hash_table (info);
14880 target_optimize = table->target_optimize;
14881 ex9_insn = ex9_insn_head;
14884 ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size;
14886 ex9_insn = ex9_insn->next;
14889 ex9_insn_head = NULL;
14891 if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON))
14893 /* Examine ifc reduce size. */
14894 struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head;
14895 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
14900 if (ifc_ent->enable == 0)
14903 irel_ptr = ifc_ent->irel_head;
14907 irel_ptr = irel_ptr->next;
14911 ifc_ent = ifc_ent->next;
14913 ex9_relax_size += size;
14917 /* Finish ex9 table. */
14920 nds32_elf_ex9_finish (struct bfd_link_info *link_info)
14922 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
14923 nds32_elf_order_insn_times (link_info);
14924 nds32_elf_ex9_total_relax (link_info);
14925 /* Traverse the hash table and count its times. */
14926 nds32_elf_code_hash_traverse (nds32_elf_count_insn_times);
14927 nds32_elf_order_insn_times (link_info);
14928 nds32_elf_ex9_build_itable (link_info);
14931 /* Relocate the entries in ex9 table. */
14934 nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr,
14935 struct bfd_link_info *link_info)
14937 Elf_Internal_Sym *isym = NULL;
14938 bfd_vma relocation = -1;
14939 struct elf_link_hash_entry *h;
14941 if (ptr->m_list != NULL)
14943 /* Global symbol. */
14944 h = ptr->m_list->h_list->h;
14945 if ((h->root.type == bfd_link_hash_defined
14946 || h->root.type == bfd_link_hash_defweak)
14947 && h->root.u.def.section != NULL
14948 && h->root.u.def.section->output_section != NULL)
14951 relocation = h->root.u.def.value +
14952 h->root.u.def.section->output_section->vma +
14953 h->root.u.def.section->output_offset;
14954 relocation += ptr->m_list->irel->r_addend;
14959 else if (ptr->sec !=NULL)
14961 /* Local symbol. */
14962 Elf_Internal_Sym sym;
14963 asection *sec = NULL;
14965 asection *isec_ptr = &isec;
14966 Elf_Internal_Rela irel_backup = *(ptr->irel);
14967 asection *sec_backup = ptr->sec;
14968 bfd *abfd = ptr->sec->owner;
14970 if (!nds32_get_local_syms (abfd, sec, &isym))
14972 isym = isym + ELF32_R_SYM (ptr->irel->r_info);
14974 sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
14979 /* The purpose is same as elf_link_input_bfd. */
14980 if (isec_ptr != NULL
14981 && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE
14982 && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
14985 _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr,
14986 elf_section_data (isec_ptr)->sec_info,
14989 relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym,
14990 &ptr->sec, ptr->irel);
14991 if (ptr->irel != NULL)
14992 relocation += ptr->irel->r_addend;
14994 /* Restore origin value since there may be some insntructions that
14995 could not be replaced with ex9.it. */
14996 *(ptr->irel) = irel_backup;
14997 ptr->sec = sec_backup;
15003 /* Import ex9 table and build list. */
15006 nds32_elf_ex9_import_table (struct bfd_link_info *info)
15009 bfd_byte *contents;
15010 unsigned long insn;
15011 FILE *ex9_import_file;
15012 int update_ex9_table;
15013 struct elf_nds32_link_hash_table *table;
15015 table = nds32_elf_hash_table (info);
15016 ex9_import_file = table->ex9_import_file;
15017 rewind (table->ex9_import_file);
15019 contents = bfd_malloc (sizeof (bfd_byte) * 4);
15021 /* Read instructions from the input file and build the list. */
15022 while (!feof (ex9_import_file))
15025 struct elf_nds32_insn_times_entry *ptr;
15028 nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file);
15029 /* Ignore the final byte 0x0a. */
15032 insn = bfd_getb32 (contents);
15033 code = bfd_malloc (sizeof (char) * 9);
15034 snprintf (code, 9, "%08lx", insn);
15035 ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
15036 ptr->string = code;
15040 ptr->m_list = NULL;
15041 ptr->rel_backup.r_offset = 0;
15042 ptr->rel_backup.r_info = 0;
15043 ptr->rel_backup.r_addend = 0;
15046 nds32_elf_ex9_insert_entry (ptr);
15050 update_ex9_table = table->update_ex9_table;
15051 if (update_ex9_table == 1)
15053 /* It has to consider of sethi need to use multiple page
15054 but it not be done yet. */
15055 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
15056 nds32_elf_order_insn_times (info);
15060 /* Export ex9 table. */
15063 nds32_elf_ex9_export (struct bfd_link_info *info,
15064 bfd_byte *contents, int size)
15066 FILE *ex9_export_file;
15067 struct elf_nds32_link_hash_table *table;
15069 table = nds32_elf_hash_table (info);
15070 ex9_export_file = table->ex9_export_file;
15071 fwrite (contents, sizeof (bfd_byte), size, ex9_export_file);
15072 fclose (ex9_export_file);
15075 /* Adjust relocations of J and JAL in ex9.itable.
15076 Export ex9 table. */
15079 nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info)
15081 asection *table_sec = NULL;
15082 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
15083 struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2;
15085 uint32_t insn, insn_with_reg, source_insn;
15086 bfd_byte *contents = NULL, *source_contents = NULL;
15089 int shift, update_ex9_table, offset = 0;
15090 reloc_howto_type *howto = NULL;
15091 Elf_Internal_Rela rel_backup;
15092 unsigned short insn_ex9;
15093 struct elf_nds32_link_hash_table *table;
15094 FILE *ex9_export_file;
15095 static bfd_boolean done = FALSE;
15102 table = nds32_elf_hash_table (link_info);
15104 table->relax_status |= NDS32_RELAX_EX9_DONE;
15107 update_ex9_table = table->update_ex9_table;
15108 /* Generated ex9.itable exactly. */
15109 if (update_ex9_table == 0)
15111 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
15112 it_abfd = it_abfd->link.next)
15114 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
15115 if (table_sec != NULL)
15119 if (table_sec != NULL)
15123 output_bfd = table_sec->output_section->owner;
15124 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15125 if (table_sec->size == 0)
15128 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
15137 output_bfd = link_info->input_bfds->sections->output_section->owner;
15138 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15139 contents = bfd_malloc (sizeof (bfd_byte) * 2048);
15142 /* Relocate instruction. */
15145 bfd_vma relocation, min_relocation = 0xffffffff;
15147 insn = strtol (ex9_insn->string, NULL, 16);
15149 if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL)
15151 if (ex9_insn->m_list)
15152 rel_backup = ex9_insn->m_list->rel_backup;
15154 rel_backup = ex9_insn->rel_backup;
15156 nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg);
15158 bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE
15159 (rel_backup.r_info));
15160 shift = howto->rightshift;
15161 if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA
15162 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA
15163 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA
15164 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA
15165 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA)
15167 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15169 insn_with_reg | ((relocation >> shift) &
15170 nds32_elf_irel_mask (&rel_backup));
15171 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15173 else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3
15174 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0)
15175 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA
15176 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA)
15177 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA
15178 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA)
15179 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA
15180 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA))
15182 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15184 insn_with_reg | (((relocation - gp) >> shift) &
15185 nds32_elf_irel_mask (&rel_backup));
15186 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15188 else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA)
15190 /* Sethi may be multiple entry for one insn. */
15191 if (ex9_insn->next && ex9_insn->m_list
15192 && ex9_insn->m_list == ex9_insn->next->m_list)
15194 struct elf_link_hash_entry_mul_list *m_list;
15195 struct elf_nds32_ex9_refix *fix_ptr;
15196 struct elf_link_hash_entry *h;
15198 temp_ptr = ex9_insn;
15199 temp_ptr2 = ex9_insn;
15200 m_list = ex9_insn->m_list;
15203 h = m_list->h_list->h;
15204 relocation = h->root.u.def.value +
15205 h->root.u.def.section->output_section->vma +
15206 h->root.u.def.section->output_offset;
15207 relocation += m_list->irel->r_addend;
15209 if (relocation < min_relocation)
15210 min_relocation = relocation;
15211 m_list = m_list->next;
15213 relocation = min_relocation;
15215 /* Put insntruction into ex9 table. */
15216 insn = insn_with_reg
15217 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15218 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15219 relocation = relocation + 0x1000; /* hi20 */
15221 while (ex9_insn->next && ex9_insn->m_list
15222 && ex9_insn->m_list == ex9_insn->next->m_list)
15224 /* Multiple sethi. */
15225 ex9_insn = ex9_insn->next;
15228 insn_with_reg | ((relocation >> shift) &
15229 nds32_elf_irel_mask (&rel_backup));
15230 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15231 relocation = relocation + 0x1000; /* hi20 */
15234 fix_ptr = ex9_refix_head;
15237 /* Fix ex9 insn. */
15238 /* temp_ptr2 points to the head of multiple sethi. */
15239 temp_ptr = temp_ptr2;
15240 while (fix_ptr->order != temp_ptr->order && fix_ptr->next)
15242 fix_ptr = fix_ptr->next;
15244 if (fix_ptr->order != temp_ptr->order)
15247 /* Set source insn. */
15249 fix_ptr->h->root.u.def.value +
15250 fix_ptr->h->root.u.def.section->output_section->vma +
15251 fix_ptr->h->root.u.def.section->output_offset;
15252 relocation += fix_ptr->irel->r_addend;
15253 /* sethi imm is imm20s. */
15254 source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff);
15258 /* Match entry and source code. */
15259 insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset);
15260 if (insn == source_insn)
15262 /* Fix the ex9 insn. */
15263 if (temp_ptr->order != fix_ptr->order)
15265 if (!nds32_get_section_contents
15266 (fix_ptr->sec->owner, fix_ptr->sec,
15267 &source_contents, TRUE))
15269 (_("Linker: error cannot fixed ex9 relocation \n"));
15270 if (temp_ptr->order < 32)
15271 insn_ex9 = INSN_EX9_IT_2;
15273 insn_ex9 = INSN_EX9_IT_1;
15274 insn_ex9 = insn_ex9 | temp_ptr->order;
15275 bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset);
15281 if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list)
15283 (_("Linker: error cannot fixed ex9 relocation \n"));
15285 temp_ptr = temp_ptr->next;
15288 fix_ptr = fix_ptr->next;
15293 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15294 insn = insn_with_reg
15295 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15296 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15302 /* Insn without relocation does not have to be fixed
15303 if need to update export table. */
15304 if (update_ex9_table == 1)
15305 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15307 ex9_insn = ex9_insn->next;
15311 ex9_export_file = table->ex9_export_file;
15312 if (ex9_export_file != NULL)
15313 nds32_elf_ex9_export (link_info, contents, table_sec->size);
15314 else if (update_ex9_table == 1)
15316 table->ex9_export_file = table->ex9_import_file;
15317 rewind (table->ex9_export_file);
15318 nds32_elf_ex9_export (link_info, contents, size);
15322 /* Generate ex9 hash table. */
15325 nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec,
15326 struct bfd_link_info *link_info)
15328 Elf_Internal_Rela *internal_relocs;
15329 Elf_Internal_Rela *irelend;
15330 Elf_Internal_Rela *irel;
15331 Elf_Internal_Rela *jrel;
15332 Elf_Internal_Rela rel_backup;
15333 Elf_Internal_Shdr *symtab_hdr;
15334 Elf_Internal_Sym *isym = NULL;
15336 struct elf_link_hash_entry **sym_hashes;
15337 bfd_byte *contents = NULL;
15339 unsigned long r_symndx;
15340 uint32_t insn, insn_with_reg;
15341 struct elf_link_hash_entry *h;
15342 int data_flag, shift, align;
15343 bfd_vma relocation;
15344 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
15345 reloc_howto_type *howto = NULL;
15347 sym_hashes = elf_sym_hashes (abfd);
15348 /* Load section instructions, relocations, and symbol table. */
15349 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
15352 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
15353 TRUE /* keep_memory */);
15354 irelend = internal_relocs + sec->reloc_count;
15355 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
15356 if (!nds32_get_local_syms (abfd, sec, &isym))
15359 /* Check the object if enable ex9. */
15360 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
15361 R_NDS32_RELAX_ENTRY);
15363 /* Check this section trigger ex9 relaxation. */
15366 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
15367 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
15368 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
15371 irel = internal_relocs;
15373 /* Push each insn into hash table. */
15374 while (off < sec->size)
15377 struct elf_nds32_code_hash_entry *entry;
15379 while (irel != NULL && irel < irelend && irel->r_offset < off)
15382 data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend,
15383 NULL, sec, &off, contents);
15384 if (data_flag & DATA_EXIST)
15386 /* We save the move offset in the highest byte. */
15387 off += (data_flag >> 24);
15391 if (*(contents + off) & 0x80)
15400 rel_backup.r_info = 0;
15401 rel_backup.r_offset = 0;
15402 rel_backup.r_addend = 0;
15403 /* Load the instruction and its opcode with register for comparing. */
15404 insn = bfd_getb32 (contents + off);
15406 if (irel != NULL && irel < irelend && irel->r_offset == off)
15408 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
15409 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
15410 shift = howto->rightshift;
15411 align = (1 << shift) - 1;
15412 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
15413 || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA
15414 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
15415 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
15416 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
15417 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
15418 ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15419 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15420 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15421 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15422 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15423 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15424 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15425 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15427 r_symndx = ELF32_R_SYM (irel->r_info);
15429 rel_backup = *irel;
15430 if (r_symndx < symtab_hdr->sh_info)
15432 /* Local symbol. */
15433 int shndx = isym[r_symndx].st_shndx;
15435 bfd_vma st_value = (isym + r_symndx)->st_value;
15436 isec = elf_elfsections (abfd)[shndx]->bfd_section;
15437 relocation = (isec->output_section->vma + isec->output_offset
15438 + st_value + irel->r_addend);
15442 /* External symbol. */
15443 bfd_boolean warned ATTRIBUTE_UNUSED;
15444 bfd_boolean ignored ATTRIBUTE_UNUSED;
15445 bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
15448 /* Maybe there is a better way to get h and relocation */
15449 RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel,
15450 r_symndx, symtab_hdr, sym_hashes,
15451 h, sym_sec, relocation,
15452 unresolved_reloc, warned, ignored);
15453 relocation += irel->r_addend;
15454 if ((h->root.type != bfd_link_hash_defined
15455 && h->root.type != bfd_link_hash_defweak)
15456 || strcmp (h->root.root.string, "_FP_BASE_") == 0)
15463 /* Check for gp relative instruction alignment. */
15464 if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15465 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15466 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15467 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15468 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15469 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15470 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15471 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15474 bfd *output_bfd = sec->output_section->owner;
15475 bfd_reloc_status_type r;
15477 /* If the symbol is in the abs section, the out_bfd will be null.
15478 This happens when the relocation has a symbol@GOTOFF. */
15479 r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15480 if (r != bfd_reloc_ok)
15488 /* Make sure alignment is correct. */
15489 if (relocation & align)
15491 /* Incorrect alignment. */
15493 (_("%s: warning: unaligned small data access. "
15494 "For entry: {%d, %d, %d}, addr = 0x%x, align = 0x%x."),
15495 bfd_get_filename (abfd), irel->r_offset,
15496 irel->r_info, irel->r_addend, relocation, align);
15502 insn = insn_with_reg
15503 | ((relocation >> shift) & nds32_elf_irel_mask (irel));
15505 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
15506 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
15507 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
15509 /* These relocations do not have to relocate contens, so it can
15510 be regard as instruction without relocation. */
15519 snprintf (code, sizeof (code), "%08x", insn);
15521 entry = (struct elf_nds32_code_hash_entry*)
15522 bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE);
15526 (_("%P%F: failed creating ex9.it %s hash table: %E\n"), code);
15531 if (h->root.type == bfd_link_hash_undefined)
15533 /* Global symbol. */
15534 /* In order to do sethi with different symbol but same value. */
15535 if (entry->m_list == NULL)
15537 struct elf_link_hash_entry_mul_list *m_list_new;
15538 struct elf_link_hash_entry_list *h_list_new;
15540 m_list_new = (struct elf_link_hash_entry_mul_list *)
15541 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15542 h_list_new = (struct elf_link_hash_entry_list *)
15543 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15544 entry->m_list = m_list_new;
15545 m_list_new->h_list = h_list_new;
15546 m_list_new->rel_backup = rel_backup;
15547 m_list_new->times = 1;
15548 m_list_new->irel = jrel;
15549 m_list_new->next = NULL;
15551 h_list_new->next = NULL;
15555 struct elf_link_hash_entry_mul_list *m_list = entry->m_list;
15556 struct elf_link_hash_entry_list *h_list;
15560 /* Build the different symbols that point to the same address. */
15561 h_list = m_list->h_list;
15562 if (h_list->h->root.u.def.value == h->root.u.def.value
15563 && h_list->h->root.u.def.section->output_section->vma
15564 == h->root.u.def.section->output_section->vma
15565 && h_list->h->root.u.def.section->output_offset
15566 == h->root.u.def.section->output_offset
15567 && m_list->rel_backup.r_addend == rel_backup.r_addend)
15570 m_list->irel = jrel;
15571 while (h_list->h != h && h_list->next)
15572 h_list = h_list->next;
15573 if (h_list->h != h)
15575 struct elf_link_hash_entry_list *h_list_new;
15577 h_list_new = (struct elf_link_hash_entry_list *)
15578 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15579 h_list->next = h_list_new;
15581 h_list_new->next = NULL;
15585 /* The sethi case may have different address but the
15586 hi20 is the same. */
15587 else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA
15588 && m_list->next == NULL)
15590 struct elf_link_hash_entry_mul_list *m_list_new;
15591 struct elf_link_hash_entry_list *h_list_new;
15593 m_list_new = (struct elf_link_hash_entry_mul_list *)
15594 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15595 h_list_new = (struct elf_link_hash_entry_list *)
15596 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15597 m_list->next = m_list_new;
15598 m_list_new->h_list = h_list_new;
15599 m_list_new->rel_backup = rel_backup;
15600 m_list_new->times = 1;
15601 m_list_new->irel = jrel;
15602 m_list_new->next = NULL;
15604 h_list_new->next = NULL;
15607 m_list = m_list->next;
15618 /* Local symbol and insn without relocation*/
15620 entry->rel_backup = rel_backup;
15623 /* Use in sethi insn with constant and global symbol in same format. */
15625 entry->const_insn = 1;
15627 entry->irel = jrel;
15635 /* Set the _ITB_BASE, and point it to ex9 table. */
15638 nds32_elf_ex9_itb_base (struct bfd_link_info *link_info)
15642 bfd *output_bfd = NULL;
15643 struct bfd_link_hash_entry *bh = NULL;
15645 if (is_ITB_BASE_set == 1)
15648 is_ITB_BASE_set = 1;
15650 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE);
15652 if (bh && (bh->type == bfd_link_hash_defined
15653 || bh->type == bfd_link_hash_defweak))
15656 for (abfd = link_info->input_bfds; abfd != NULL;
15657 abfd = abfd->link.next)
15659 sec = bfd_get_section_by_name (abfd, ".ex9.itable");
15662 output_bfd = sec->output_section->owner;
15666 if (output_bfd == NULL)
15668 output_bfd = link_info->output_bfd;
15669 if (output_bfd->sections == NULL)
15672 sec = bfd_abs_section_ptr;
15674 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_",
15675 FALSE, FALSE, TRUE);
15676 return (_bfd_generic_link_add_one_symbol
15677 (link_info, output_bfd, "_ITB_BASE_",
15678 BSF_GLOBAL | BSF_WEAK, sec, 0,
15679 (const char *) NULL, FALSE, get_elf_backend_data
15680 (output_bfd)->collect, &bh));
15684 #define ELF_ARCH bfd_arch_nds32
15685 #define ELF_MACHINE_CODE EM_NDS32
15686 #define ELF_MAXPAGESIZE 0x1000
15687 #define ELF_TARGET_ID NDS32_ELF_DATA
15689 #define TARGET_BIG_SYM nds32_elf32_be_vec
15690 #define TARGET_BIG_NAME "elf32-nds32be"
15691 #define TARGET_LITTLE_SYM nds32_elf32_le_vec
15692 #define TARGET_LITTLE_NAME "elf32-nds32le"
15694 #define elf_info_to_howto nds32_info_to_howto
15695 #define elf_info_to_howto_rel nds32_info_to_howto_rel
15697 #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create
15698 #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data
15699 #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data
15700 #define bfd_elf32_bfd_relax_section nds32_elf_relax_section
15701 #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags
15703 #define bfd_elf32_mkobject nds32_elf_mkobject
15704 #define elf_backend_action_discarded nds32_elf_action_discarded
15705 #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook
15706 #define elf_backend_check_relocs nds32_elf_check_relocs
15707 #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol
15708 #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections
15709 #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections
15710 #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol
15711 #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections
15712 #define elf_backend_relocate_section nds32_elf_relocate_section
15713 #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook
15714 #define elf_backend_gc_sweep_hook nds32_elf_gc_sweep_hook
15715 #define elf_backend_grok_prstatus nds32_elf_grok_prstatus
15716 #define elf_backend_grok_psinfo nds32_elf_grok_psinfo
15717 #define elf_backend_reloc_type_class nds32_elf_reloc_type_class
15718 #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol
15719 #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook
15720 #define elf_backend_output_arch_syms nds32_elf_output_arch_syms
15721 #define elf_backend_object_p nds32_elf_object_p
15722 #define elf_backend_final_write_processing nds32_elf_final_write_processing
15723 #define elf_backend_special_sections nds32_elf_special_sections
15724 #define bfd_elf32_bfd_get_relocated_section_contents \
15725 nds32_elf_get_relocated_section_contents
15727 #define elf_backend_can_gc_sections 1
15728 #define elf_backend_can_refcount 1
15729 #define elf_backend_want_got_plt 1
15730 #define elf_backend_plt_readonly 1
15731 #define elf_backend_want_plt_sym 0
15732 #define elf_backend_got_header_size 12
15733 #define elf_backend_may_use_rel_p 1
15734 #define elf_backend_default_use_rela_p 1
15735 #define elf_backend_may_use_rela_p 1
15737 #include "elf32-target.h"
15739 #undef ELF_MAXPAGESIZE
15740 #define ELF_MAXPAGESIZE 0x2000
15742 #undef TARGET_BIG_SYM
15743 #define TARGET_BIG_SYM nds32_elf32_linux_be_vec
15744 #undef TARGET_BIG_NAME
15745 #define TARGET_BIG_NAME "elf32-nds32be-linux"
15746 #undef TARGET_LITTLE_SYM
15747 #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec
15748 #undef TARGET_LITTLE_NAME
15749 #define TARGET_LITTLE_NAME "elf32-nds32le-linux"
15751 #define elf32_bed elf32_nds32_lin_bed
15753 #include "elf32-target.h"