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2013-03-12 Sebastian Huber <sebastian.huber@embedded-brains.de>
[binutils-gdb.git] / bfd / elf-m10200.c
blobf427f97cbf9095cd3fdfb9a00c1cba733cb1d3bd
1 /* Matsushita 10200 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2007, 2010, 2012
4 Free Software Foundation, Inc.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27
28 static bfd_boolean
29 mn10200_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
30 static bfd_boolean
31 mn10200_elf_symbol_address_p (bfd *, asection *, Elf_Internal_Sym *, bfd_vma);
32
33 enum reloc_type
34 {
35 R_MN10200_NONE = 0,
36 R_MN10200_32,
37 R_MN10200_16,
38 R_MN10200_8,
39 R_MN10200_24,
40 R_MN10200_PCREL8,
41 R_MN10200_PCREL16,
42 R_MN10200_PCREL24,
43 R_MN10200_MAX
44 };
45
46 static reloc_howto_type elf_mn10200_howto_table[] =
47 {
48 /* Dummy relocation. Does nothing. */
49 HOWTO (R_MN10200_NONE,
50 0,
51 2,
52 16,
53 FALSE,
54 0,
55 complain_overflow_bitfield,
56 bfd_elf_generic_reloc,
57 "R_MN10200_NONE",
58 FALSE,
59 0,
60 0,
61 FALSE),
62 /* Standard 32 bit reloc. */
63 HOWTO (R_MN10200_32,
64 0,
65 2,
66 32,
67 FALSE,
68 0,
69 complain_overflow_bitfield,
70 bfd_elf_generic_reloc,
71 "R_MN10200_32",
72 FALSE,
73 0xffffffff,
74 0xffffffff,
75 FALSE),
76 /* Standard 16 bit reloc. */
77 HOWTO (R_MN10200_16,
78 0,
79 1,
80 16,
81 FALSE,
82 0,
83 complain_overflow_bitfield,
84 bfd_elf_generic_reloc,
85 "R_MN10200_16",
86 FALSE,
87 0xffff,
88 0xffff,
89 FALSE),
90 /* Standard 8 bit reloc. */
91 HOWTO (R_MN10200_8,
92 0,
93 0,
94 8,
95 FALSE,
96 0,
97 complain_overflow_bitfield,
98 bfd_elf_generic_reloc,
99 "R_MN10200_8",
100 FALSE,
101 0xff,
102 0xff,
103 FALSE),
104 /* Standard 24 bit reloc. */
105 HOWTO (R_MN10200_24,
106 0,
107 2,
108 24,
109 FALSE,
110 0,
111 complain_overflow_bitfield,
112 bfd_elf_generic_reloc,
113 "R_MN10200_24",
114 FALSE,
115 0xffffff,
116 0xffffff,
117 FALSE),
118 /* Simple 8 pc-relative reloc. */
119 HOWTO (R_MN10200_PCREL8,
120 0,
121 0,
122 8,
123 TRUE,
124 0,
125 complain_overflow_bitfield,
126 bfd_elf_generic_reloc,
127 "R_MN10200_PCREL8",
128 FALSE,
129 0xff,
130 0xff,
131 TRUE),
132 /* Simple 16 pc-relative reloc. */
133 HOWTO (R_MN10200_PCREL16,
134 0,
135 1,
136 16,
137 TRUE,
138 0,
139 complain_overflow_bitfield,
140 bfd_elf_generic_reloc,
141 "R_MN10200_PCREL16",
142 FALSE,
143 0xffff,
144 0xffff,
145 TRUE),
146 /* Simple 32bit pc-relative reloc with a 1 byte adjustment
147 to get the pc-relative offset correct. */
148 HOWTO (R_MN10200_PCREL24,
149 0,
150 2,
151 24,
152 TRUE,
153 0,
154 complain_overflow_bitfield,
155 bfd_elf_generic_reloc,
156 "R_MN10200_PCREL24",
157 FALSE,
158 0xffffff,
159 0xffffff,
160 TRUE),
161 };
162
163 struct mn10200_reloc_map
164 {
165 bfd_reloc_code_real_type bfd_reloc_val;
166 unsigned char elf_reloc_val;
167 };
168
169 static const struct mn10200_reloc_map mn10200_reloc_map[] =
170 {
171 { BFD_RELOC_NONE , R_MN10200_NONE , },
172 { BFD_RELOC_32 , R_MN10200_32 , },
173 { BFD_RELOC_16 , R_MN10200_16 , },
174 { BFD_RELOC_8 , R_MN10200_8 , },
175 { BFD_RELOC_24 , R_MN10200_24 , },
176 { BFD_RELOC_8_PCREL , R_MN10200_PCREL8 , },
177 { BFD_RELOC_16_PCREL, R_MN10200_PCREL16, },
178 { BFD_RELOC_24_PCREL, R_MN10200_PCREL24, },
179 };
180
181 static reloc_howto_type *
182 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
183 bfd_reloc_code_real_type code)
184 {
185 unsigned int i;
186
187 for (i = 0;
188 i < sizeof (mn10200_reloc_map) / sizeof (struct mn10200_reloc_map);
189 i++)
190 {
191 if (mn10200_reloc_map[i].bfd_reloc_val == code)
192 return &elf_mn10200_howto_table[mn10200_reloc_map[i].elf_reloc_val];
193 }
194
195 return NULL;
196 }
197
198 static reloc_howto_type *
199 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
200 const char *r_name)
201 {
202 unsigned int i;
203
204 for (i = 0;
205 i < (sizeof (elf_mn10200_howto_table)
206 / sizeof (elf_mn10200_howto_table[0]));
207 i++)
208 if (elf_mn10200_howto_table[i].name != NULL
209 && strcasecmp (elf_mn10200_howto_table[i].name, r_name) == 0)
210 return &elf_mn10200_howto_table[i];
211
212 return NULL;
213 }
214
215 /* Set the howto pointer for an MN10200 ELF reloc. */
216
217 static void
218 mn10200_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
219 arelent *cache_ptr,
220 Elf_Internal_Rela *dst)
221 {
222 unsigned int r_type;
223
224 r_type = ELF32_R_TYPE (dst->r_info);
225 BFD_ASSERT (r_type < (unsigned int) R_MN10200_MAX);
226 cache_ptr->howto = &elf_mn10200_howto_table[r_type];
227 }
228
229 /* Perform a relocation as part of a final link. */
230
231 static bfd_reloc_status_type
232 mn10200_elf_final_link_relocate (reloc_howto_type *howto,
233 bfd *input_bfd,
234 bfd *output_bfd ATTRIBUTE_UNUSED,
235 asection *input_section,
236 bfd_byte *contents,
237 bfd_vma offset,
238 bfd_vma value,
239 bfd_vma addend,
240 struct bfd_link_info *info ATTRIBUTE_UNUSED,
241 asection *sym_sec ATTRIBUTE_UNUSED,
242 int is_local ATTRIBUTE_UNUSED)
243 {
244 unsigned long r_type = howto->type;
245 bfd_byte *hit_data = contents + offset;
246
247 switch (r_type)
248 {
249
250 case R_MN10200_NONE:
251 return bfd_reloc_ok;
252
253 case R_MN10200_32:
254 value += addend;
255 bfd_put_32 (input_bfd, value, hit_data);
256 return bfd_reloc_ok;
257
258 case R_MN10200_16:
259 value += addend;
260
261 if ((long) value > 0x7fff || (long) value < -0x8000)
262 return bfd_reloc_overflow;
263
264 bfd_put_16 (input_bfd, value, hit_data);
265 return bfd_reloc_ok;
266
267 case R_MN10200_8:
268 value += addend;
269
270 if ((long) value > 0x7f || (long) value < -0x80)
271 return bfd_reloc_overflow;
272
273 bfd_put_8 (input_bfd, value, hit_data);
274 return bfd_reloc_ok;
275
276 case R_MN10200_24:
277 value += addend;
278
279 if ((long) value > 0x7fffff || (long) value < -0x800000)
280 return bfd_reloc_overflow;
281
282 value &= 0xffffff;
283 value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
284 bfd_put_32 (input_bfd, value, hit_data);
285 return bfd_reloc_ok;
286
287 case R_MN10200_PCREL8:
288 value -= (input_section->output_section->vma
289 + input_section->output_offset);
290 value -= (offset + 1);
291 value += addend;
292
293 if ((long) value > 0xff || (long) value < -0x100)
294 return bfd_reloc_overflow;
295
296 bfd_put_8 (input_bfd, value, hit_data);
297 return bfd_reloc_ok;
298
299 case R_MN10200_PCREL16:
300 value -= (input_section->output_section->vma
301 + input_section->output_offset);
302 value -= (offset + 2);
303 value += addend;
304
305 if ((long) value > 0xffff || (long) value < -0x10000)
306 return bfd_reloc_overflow;
307
308 bfd_put_16 (input_bfd, value, hit_data);
309 return bfd_reloc_ok;
310
311 case R_MN10200_PCREL24:
312 value -= (input_section->output_section->vma
313 + input_section->output_offset);
314 value -= (offset + 3);
315 value += addend;
316
317 if ((long) value > 0xffffff || (long) value < -0x1000000)
318 return bfd_reloc_overflow;
319
320 value &= 0xffffff;
321 value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
322 bfd_put_32 (input_bfd, value, hit_data);
323 return bfd_reloc_ok;
324
325 default:
326 return bfd_reloc_notsupported;
327 }
328 }
329 \f
330 /* Relocate an MN10200 ELF section. */
331 static bfd_boolean
332 mn10200_elf_relocate_section (bfd *output_bfd,
333 struct bfd_link_info *info,
334 bfd *input_bfd,
335 asection *input_section,
336 bfd_byte *contents,
337 Elf_Internal_Rela *relocs,
338 Elf_Internal_Sym *local_syms,
339 asection **local_sections)
340 {
341 Elf_Internal_Shdr *symtab_hdr;
342 struct elf_link_hash_entry **sym_hashes;
343 Elf_Internal_Rela *rel, *relend;
344
345 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
346 sym_hashes = elf_sym_hashes (input_bfd);
347
348 rel = relocs;
349 relend = relocs + input_section->reloc_count;
350 for (; rel < relend; rel++)
351 {
352 int r_type;
353 reloc_howto_type *howto;
354 unsigned long r_symndx;
355 Elf_Internal_Sym *sym;
356 asection *sec;
357 struct elf_link_hash_entry *h;
358 bfd_vma relocation;
359 bfd_reloc_status_type r;
360
361 r_symndx = ELF32_R_SYM (rel->r_info);
362 r_type = ELF32_R_TYPE (rel->r_info);
363 howto = elf_mn10200_howto_table + r_type;
364
365 h = NULL;
366 sym = NULL;
367 sec = NULL;
368 if (r_symndx < symtab_hdr->sh_info)
369 {
370 sym = local_syms + r_symndx;
371 sec = local_sections[r_symndx];
372 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
373 }
374 else
375 {
376 bfd_boolean unresolved_reloc, warned;
377
378 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
379 r_symndx, symtab_hdr, sym_hashes,
380 h, sec, relocation,
381 unresolved_reloc, warned);
382 }
383
384 if (sec != NULL && discarded_section (sec))
385 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
386 rel, 1, relend, howto, 0, contents);
387
388 if (info->relocatable)
389 continue;
390
391 r = mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
392 input_section,
393 contents, rel->r_offset,
394 relocation, rel->r_addend,
395 info, sec, h == NULL);
396
397 if (r != bfd_reloc_ok)
398 {
399 const char *name;
400 const char *msg = (const char *) 0;
401
402 if (h != NULL)
403 name = h->root.root.string;
404 else
405 {
406 name = (bfd_elf_string_from_elf_section
407 (input_bfd, symtab_hdr->sh_link, sym->st_name));
408 if (name == NULL || *name == '\0')
409 name = bfd_section_name (input_bfd, sec);
410 }
411
412 switch (r)
413 {
414 case bfd_reloc_overflow:
415 if (! ((*info->callbacks->reloc_overflow)
416 (info, (h ? &h->root : NULL), name, howto->name,
417 (bfd_vma) 0, input_bfd, input_section,
418 rel->r_offset)))
419 return FALSE;
420 break;
421
422 case bfd_reloc_undefined:
423 if (! ((*info->callbacks->undefined_symbol)
424 (info, name, input_bfd, input_section,
425 rel->r_offset, TRUE)))
426 return FALSE;
427 break;
428
429 case bfd_reloc_outofrange:
430 msg = _("internal error: out of range error");
431 goto common_error;
432
433 case bfd_reloc_notsupported:
434 msg = _("internal error: unsupported relocation error");
435 goto common_error;
436
437 case bfd_reloc_dangerous:
438 msg = _("internal error: dangerous error");
439 goto common_error;
440
441 default:
442 msg = _("internal error: unknown error");
443 /* fall through */
444
445 common_error:
446 if (!((*info->callbacks->warning)
447 (info, msg, name, input_bfd, input_section,
448 rel->r_offset)))
449 return FALSE;
450 break;
451 }
452 }
453 }
454
455 return TRUE;
456 }
457
458 /* Delete some bytes from a section while relaxing. */
459
460 static bfd_boolean
461 mn10200_elf_relax_delete_bytes (bfd *abfd, asection *sec,
462 bfd_vma addr, int count)
463 {
464 Elf_Internal_Shdr *symtab_hdr;
465 unsigned int sec_shndx;
466 bfd_byte *contents;
467 Elf_Internal_Rela *irel, *irelend;
468 bfd_vma toaddr;
469 Elf_Internal_Sym *isym;
470 Elf_Internal_Sym *isymend;
471 struct elf_link_hash_entry **sym_hashes;
472 struct elf_link_hash_entry **end_hashes;
473 unsigned int symcount;
474
475 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
476
477 contents = elf_section_data (sec)->this_hdr.contents;
478
479 toaddr = sec->size;
480
481 irel = elf_section_data (sec)->relocs;
482 irelend = irel + sec->reloc_count;
483
484 /* Actually delete the bytes. */
485 memmove (contents + addr, contents + addr + count,
486 (size_t) (toaddr - addr - count));
487 sec->size -= count;
488
489 /* Adjust all the relocs. */
490 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
491 {
492 /* Get the new reloc address. */
493 if ((irel->r_offset > addr
494 && irel->r_offset < toaddr))
495 irel->r_offset -= count;
496 }
497
498 /* Adjust the local symbols defined in this section. */
499 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
500 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
501 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
502 {
503 if (isym->st_shndx == sec_shndx
504 && isym->st_value > addr
505 && isym->st_value < toaddr)
506 isym->st_value -= count;
507 }
508
509 /* Now adjust the global symbols defined in this section. */
510 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
511 - symtab_hdr->sh_info);
512 sym_hashes = elf_sym_hashes (abfd);
513 end_hashes = sym_hashes + symcount;
514 for (; sym_hashes < end_hashes; sym_hashes++)
515 {
516 struct elf_link_hash_entry *sym_hash = *sym_hashes;
517 if ((sym_hash->root.type == bfd_link_hash_defined
518 || sym_hash->root.type == bfd_link_hash_defweak)
519 && sym_hash->root.u.def.section == sec
520 && sym_hash->root.u.def.value > addr
521 && sym_hash->root.u.def.value < toaddr)
522 {
523 sym_hash->root.u.def.value -= count;
524 }
525 }
526
527 return TRUE;
528 }
529
530 /* This function handles relaxing for the mn10200.
531
532 There are quite a few relaxing opportunities available on the mn10200:
533
534 * jsr:24 -> jsr:16 2 bytes
535
536 * jmp:24 -> jmp:16 2 bytes
537 * jmp:16 -> bra:8 1 byte
538
539 * If the previous instruction is a conditional branch
540 around the jump/bra, we may be able to reverse its condition
541 and change its target to the jump's target. The jump/bra
542 can then be deleted. 2 bytes
543
544 * mov abs24 -> mov abs16 2 byte savings
545
546 * Most instructions which accept imm24 can relax to imm16 2 bytes
547 - Most instructions which accept imm16 can relax to imm8 1 byte
548
549 * Most instructions which accept d24 can relax to d16 2 bytes
550 - Most instructions which accept d16 can relax to d8 1 byte
551
552 abs24, imm24, d24 all look the same at the reloc level. It
553 might make the code simpler if we had different relocs for
554 the various relaxable operand types.
555
556 We don't handle imm16->imm8 or d16->d8 as they're very rare
557 and somewhat more difficult to support. */
558
559 static bfd_boolean
560 mn10200_elf_relax_section (bfd *abfd,
561 asection *sec,
562 struct bfd_link_info *link_info,
563 bfd_boolean *again)
564 {
565 Elf_Internal_Shdr *symtab_hdr;
566 Elf_Internal_Rela *internal_relocs;
567 Elf_Internal_Rela *irel, *irelend;
568 bfd_byte *contents = NULL;
569 Elf_Internal_Sym *isymbuf = NULL;
570
571 /* Assume nothing changes. */
572 *again = FALSE;
573
574 /* We don't have to do anything for a relocatable link, if
575 this section does not have relocs, or if this is not a
576 code section. */
577 if (link_info->relocatable
578 || (sec->flags & SEC_RELOC) == 0
579 || sec->reloc_count == 0
580 || (sec->flags & SEC_CODE) == 0)
581 return TRUE;
582
583 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
584
585 /* Get a copy of the native relocations. */
586 internal_relocs = (_bfd_elf_link_read_relocs
587 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
588 link_info->keep_memory));
589 if (internal_relocs == NULL)
590 goto error_return;
591
592 /* Walk through them looking for relaxing opportunities. */
593 irelend = internal_relocs + sec->reloc_count;
594 for (irel = internal_relocs; irel < irelend; irel++)
595 {
596 bfd_vma symval;
597
598 /* If this isn't something that can be relaxed, then ignore
599 this reloc. */
600 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_NONE
601 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_8
602 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_MAX)
603 continue;
604
605 /* Get the section contents if we haven't done so already. */
606 if (contents == NULL)
607 {
608 /* Get cached copy if it exists. */
609 if (elf_section_data (sec)->this_hdr.contents != NULL)
610 contents = elf_section_data (sec)->this_hdr.contents;
611 else
612 {
613 /* Go get them off disk. */
614 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
615 goto error_return;
616 }
617 }
618
619 /* Read this BFD's local symbols if we haven't done so already. */
620 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
621 {
622 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
623 if (isymbuf == NULL)
624 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
625 symtab_hdr->sh_info, 0,
626 NULL, NULL, NULL);
627 if (isymbuf == NULL)
628 goto error_return;
629 }
630
631 /* Get the value of the symbol referred to by the reloc. */
632 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
633 {
634 /* A local symbol. */
635 Elf_Internal_Sym *isym;
636 asection *sym_sec;
637
638 isym = isymbuf + ELF32_R_SYM (irel->r_info);
639 if (isym->st_shndx == SHN_UNDEF)
640 sym_sec = bfd_und_section_ptr;
641 else if (isym->st_shndx == SHN_ABS)
642 sym_sec = bfd_abs_section_ptr;
643 else if (isym->st_shndx == SHN_COMMON)
644 sym_sec = bfd_com_section_ptr;
645 else
646 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
647 symval = (isym->st_value
648 + sym_sec->output_section->vma
649 + sym_sec->output_offset);
650 }
651 else
652 {
653 unsigned long indx;
654 struct elf_link_hash_entry *h;
655
656 /* An external symbol. */
657 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
658 h = elf_sym_hashes (abfd)[indx];
659 BFD_ASSERT (h != NULL);
660 if (h->root.type != bfd_link_hash_defined
661 && h->root.type != bfd_link_hash_defweak)
662 {
663 /* This appears to be a reference to an undefined
664 symbol. Just ignore it--it will be caught by the
665 regular reloc processing. */
666 continue;
667 }
668
669 symval = (h->root.u.def.value
670 + h->root.u.def.section->output_section->vma
671 + h->root.u.def.section->output_offset);
672 }
673
674 /* For simplicity of coding, we are going to modify the section
675 contents, the section relocs, and the BFD symbol table. We
676 must tell the rest of the code not to free up this
677 information. It would be possible to instead create a table
678 of changes which have to be made, as is done in coff-mips.c;
679 that would be more work, but would require less memory when
680 the linker is run. */
681
682 /* Try to turn a 24bit pc-relative branch/call into a 16bit pc-relative
683 branch/call. */
684 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL24)
685 {
686 bfd_vma value = symval;
687
688 /* Deal with pc-relative gunk. */
689 value -= (sec->output_section->vma + sec->output_offset);
690 value -= (irel->r_offset + 3);
691 value += irel->r_addend;
692
693 /* See if the value will fit in 16 bits, note the high value is
694 0x7fff + 2 as the target will be two bytes closer if we are
695 able to relax. */
696 if ((long) value < 0x8001 && (long) value > -0x8000)
697 {
698 unsigned char code;
699
700 /* Get the opcode. */
701 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
702
703 if (code != 0xe0 && code != 0xe1)
704 continue;
705
706 /* Note that we've changed the relocs, section contents, etc. */
707 elf_section_data (sec)->relocs = internal_relocs;
708 elf_section_data (sec)->this_hdr.contents = contents;
709 symtab_hdr->contents = (unsigned char *) isymbuf;
710
711 /* Fix the opcode. */
712 if (code == 0xe0)
713 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 2);
714 else if (code == 0xe1)
715 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 2);
716
717 /* Fix the relocation's type. */
718 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
719 R_MN10200_PCREL16);
720
721 /* The opcode got shorter too, so we have to fix the offset. */
722 irel->r_offset -= 1;
723
724 /* Delete two bytes of data. */
725 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
726 irel->r_offset + 1, 2))
727 goto error_return;
728
729 /* That will change things, so, we should relax again.
730 Note that this is not required, and it may be slow. */
731 *again = TRUE;
732 }
733 }
734
735 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
736 branch. */
737 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL16)
738 {
739 bfd_vma value = symval;
740
741 /* Deal with pc-relative gunk. */
742 value -= (sec->output_section->vma + sec->output_offset);
743 value -= (irel->r_offset + 2);
744 value += irel->r_addend;
745
746 /* See if the value will fit in 8 bits, note the high value is
747 0x7f + 1 as the target will be one bytes closer if we are
748 able to relax. */
749 if ((long) value < 0x80 && (long) value > -0x80)
750 {
751 unsigned char code;
752
753 /* Get the opcode. */
754 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
755
756 if (code != 0xfc)
757 continue;
758
759 /* Note that we've changed the relocs, section contents, etc. */
760 elf_section_data (sec)->relocs = internal_relocs;
761 elf_section_data (sec)->this_hdr.contents = contents;
762 symtab_hdr->contents = (unsigned char *) isymbuf;
763
764 /* Fix the opcode. */
765 bfd_put_8 (abfd, 0xea, contents + irel->r_offset - 1);
766
767 /* Fix the relocation's type. */
768 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
769 R_MN10200_PCREL8);
770
771 /* Delete one byte of data. */
772 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
773 irel->r_offset + 1, 1))
774 goto error_return;
775
776 /* That will change things, so, we should relax again.
777 Note that this is not required, and it may be slow. */
778 *again = TRUE;
779 }
780 }
781
782 /* Try to eliminate an unconditional 8 bit pc-relative branch
783 which immediately follows a conditional 8 bit pc-relative
784 branch around the unconditional branch.
785
786 original: new:
787 bCC lab1 bCC' lab2
788 bra lab2
789 lab1: lab1:
790
791 This happens when the bCC can't reach lab2 at assembly time,
792 but due to other relaxations it can reach at link time. */
793 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL8)
794 {
795 Elf_Internal_Rela *nrel;
796 bfd_vma value = symval;
797 unsigned char code;
798
799 /* Deal with pc-relative gunk. */
800 value -= (sec->output_section->vma + sec->output_offset);
801 value -= (irel->r_offset + 1);
802 value += irel->r_addend;
803
804 /* Do nothing if this reloc is the last byte in the section. */
805 if (irel->r_offset == sec->size)
806 continue;
807
808 /* See if the next instruction is an unconditional pc-relative
809 branch, more often than not this test will fail, so we
810 test it first to speed things up. */
811 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
812 if (code != 0xea)
813 continue;
814
815 /* Also make sure the next relocation applies to the next
816 instruction and that it's a pc-relative 8 bit branch. */
817 nrel = irel + 1;
818 if (nrel == irelend
819 || irel->r_offset + 2 != nrel->r_offset
820 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10200_PCREL8)
821 continue;
822
823 /* Make sure our destination immediately follows the
824 unconditional branch. */
825 if (symval != (sec->output_section->vma + sec->output_offset
826 + irel->r_offset + 3))
827 continue;
828
829 /* Now make sure we are a conditional branch. This may not
830 be necessary, but why take the chance.
831
832 Note these checks assume that R_MN10200_PCREL8 relocs
833 only occur on bCC and bCCx insns. If they occured
834 elsewhere, we'd need to know the start of this insn
835 for this check to be accurate. */
836 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
837 if (code != 0xe0 && code != 0xe1 && code != 0xe2
838 && code != 0xe3 && code != 0xe4 && code != 0xe5
839 && code != 0xe6 && code != 0xe7 && code != 0xe8
840 && code != 0xe9 && code != 0xec && code != 0xed
841 && code != 0xee && code != 0xef && code != 0xfc
842 && code != 0xfd && code != 0xfe && code != 0xff)
843 continue;
844
845 /* We also have to be sure there is no symbol/label
846 at the unconditional branch. */
847 if (mn10200_elf_symbol_address_p (abfd, sec, isymbuf,
848 irel->r_offset + 1))
849 continue;
850
851 /* Note that we've changed the relocs, section contents, etc. */
852 elf_section_data (sec)->relocs = internal_relocs;
853 elf_section_data (sec)->this_hdr.contents = contents;
854 symtab_hdr->contents = (unsigned char *) isymbuf;
855
856 /* Reverse the condition of the first branch. */
857 switch (code)
858 {
859 case 0xfc:
860 code = 0xfd;
861 break;
862 case 0xfd:
863 code = 0xfc;
864 break;
865 case 0xfe:
866 code = 0xff;
867 break;
868 case 0xff:
869 code = 0xfe;
870 break;
871 case 0xe8:
872 code = 0xe9;
873 break;
874 case 0xe9:
875 code = 0xe8;
876 break;
877 case 0xe0:
878 code = 0xe2;
879 break;
880 case 0xe2:
881 code = 0xe0;
882 break;
883 case 0xe3:
884 code = 0xe1;
885 break;
886 case 0xe1:
887 code = 0xe3;
888 break;
889 case 0xe4:
890 code = 0xe6;
891 break;
892 case 0xe6:
893 code = 0xe4;
894 break;
895 case 0xe7:
896 code = 0xe5;
897 break;
898 case 0xe5:
899 code = 0xe7;
900 break;
901 case 0xec:
902 code = 0xed;
903 break;
904 case 0xed:
905 code = 0xec;
906 break;
907 case 0xee:
908 code = 0xef;
909 break;
910 case 0xef:
911 code = 0xee;
912 break;
913 }
914 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
915
916 /* Set the reloc type and symbol for the first branch
917 from the second branch. */
918 irel->r_info = nrel->r_info;
919
920 /* Make the reloc for the second branch a null reloc. */
921 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
922 R_MN10200_NONE);
923
924 /* Delete two bytes of data. */
925 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
926 irel->r_offset + 1, 2))
927 goto error_return;
928
929 /* That will change things, so, we should relax again.
930 Note that this is not required, and it may be slow. */
931 *again = TRUE;
932 }
933
934 /* Try to turn a 24bit immediate, displacement or absolute address
935 into a 16bit immediate, displacement or absolute address. */
936 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_24)
937 {
938 bfd_vma value = symval;
939
940 /* See if the value will fit in 16 bits.
941 We allow any 16bit match here. We prune those we can't
942 handle below. */
943 if ((long) value < 0x7fff && (long) value > -0x8000)
944 {
945 unsigned char code;
946
947 /* All insns which have 24bit operands are 5 bytes long,
948 the first byte will always be 0xf4, but we double check
949 it just in case. */
950
951 /* Get the first opcode. */
952 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
953
954 if (code != 0xf4)
955 continue;
956
957 /* Get the second opcode. */
958 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
959
960 switch (code & 0xfc)
961 {
962 /* mov imm24,dn -> mov imm16,dn */
963 case 0x70:
964 /* Not safe if the high bit is on as relaxing may
965 move the value out of high mem and thus not fit
966 in a signed 16bit value. */
967 if (value & 0x8000)
968 continue;
969
970 /* Note that we've changed the relocation contents, etc. */
971 elf_section_data (sec)->relocs = internal_relocs;
972 elf_section_data (sec)->this_hdr.contents = contents;
973 symtab_hdr->contents = (unsigned char *) isymbuf;
974
975 /* Fix the opcode. */
976 bfd_put_8 (abfd, 0xf8 + (code & 0x03),
977 contents + irel->r_offset - 2);
978
979 /* Fix the relocation's type. */
980 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
981 R_MN10200_16);
982
983 /* The opcode got shorter too, so we have to fix the
984 offset. */
985 irel->r_offset -= 1;
986
987 /* Delete two bytes of data. */
988 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
989 irel->r_offset + 1, 2))
990 goto error_return;
991
992 /* That will change things, so, we should relax again.
993 Note that this is not required, and it may be slow. */
994 *again = TRUE;
995 break;
996
997 /* mov imm24,an -> mov imm16,an
998 cmp imm24,an -> cmp imm16,an
999 mov (abs24),dn -> mov (abs16),dn
1000 mov dn,(abs24) -> mov dn,(abs16)
1001 movb dn,(abs24) -> movb dn,(abs16)
1002 movbu (abs24),dn -> movbu (abs16),dn */
1003 case 0x74:
1004 case 0x7c:
1005 case 0xc0:
1006 case 0x40:
1007 case 0x44:
1008 case 0xc8:
1009 /* Note that we've changed the relocation contents, etc. */
1010 elf_section_data (sec)->relocs = internal_relocs;
1011 elf_section_data (sec)->this_hdr.contents = contents;
1012 symtab_hdr->contents = (unsigned char *) isymbuf;
1013
1014 if ((code & 0xfc) == 0x74)
1015 code = 0xdc + (code & 0x03);
1016 else if ((code & 0xfc) == 0x7c)
1017 code = 0xec + (code & 0x03);
1018 else if ((code & 0xfc) == 0xc0)
1019 code = 0xc8 + (code & 0x03);
1020 else if ((code & 0xfc) == 0x40)
1021 code = 0xc0 + (code & 0x03);
1022 else if ((code & 0xfc) == 0x44)
1023 code = 0xc4 + (code & 0x03);
1024 else if ((code & 0xfc) == 0xc8)
1025 code = 0xcc + (code & 0x03);
1026
1027 /* Fix the opcode. */
1028 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
1029
1030 /* Fix the relocation's type. */
1031 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1032 R_MN10200_16);
1033
1034 /* The opcode got shorter too, so we have to fix the
1035 offset. */
1036 irel->r_offset -= 1;
1037
1038 /* Delete two bytes of data. */
1039 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
1040 irel->r_offset + 1, 2))
1041 goto error_return;
1042
1043 /* That will change things, so, we should relax again.
1044 Note that this is not required, and it may be slow. */
1045 *again = TRUE;
1046 break;
1047
1048 /* cmp imm24,dn -> cmp imm16,dn
1049 mov (abs24),an -> mov (abs16),an
1050 mov an,(abs24) -> mov an,(abs16)
1051 add imm24,dn -> add imm16,dn
1052 add imm24,an -> add imm16,an
1053 sub imm24,dn -> sub imm16,dn
1054 sub imm24,an -> sub imm16,an
1055 And all d24->d16 in memory ops. */
1056 case 0x78:
1057 case 0xd0:
1058 case 0x50:
1059 case 0x60:
1060 case 0x64:
1061 case 0x68:
1062 case 0x6c:
1063 case 0x80:
1064 case 0xf0:
1065 case 0x00:
1066 case 0x10:
1067 case 0xb0:
1068 case 0x30:
1069 case 0xa0:
1070 case 0x20:
1071 case 0x90:
1072 /* Not safe if the high bit is on as relaxing may
1073 move the value out of high mem and thus not fit
1074 in a signed 16bit value. */
1075 if (((code & 0xfc) == 0x78
1076 || (code & 0xfc) == 0x60
1077 || (code & 0xfc) == 0x64
1078 || (code & 0xfc) == 0x68
1079 || (code & 0xfc) == 0x6c
1080 || (code & 0xfc) == 0x80
1081 || (code & 0xfc) == 0xf0
1082 || (code & 0xfc) == 0x00
1083 || (code & 0xfc) == 0x10
1084 || (code & 0xfc) == 0xb0
1085 || (code & 0xfc) == 0x30
1086 || (code & 0xfc) == 0xa0
1087 || (code & 0xfc) == 0x20
1088 || (code & 0xfc) == 0x90)
1089 && (value & 0x8000) != 0)
1090 continue;
1091
1092 /* Note that we've changed the relocation contents, etc. */
1093 elf_section_data (sec)->relocs = internal_relocs;
1094 elf_section_data (sec)->this_hdr.contents = contents;
1095 symtab_hdr->contents = (unsigned char *) isymbuf;
1096
1097 /* Fix the opcode. */
1098 bfd_put_8 (abfd, 0xf7, contents + irel->r_offset - 2);
1099
1100 if ((code & 0xfc) == 0x78)
1101 code = 0x48 + (code & 0x03);
1102 else if ((code & 0xfc) == 0xd0)
1103 code = 0x30 + (code & 0x03);
1104 else if ((code & 0xfc) == 0x50)
1105 code = 0x20 + (code & 0x03);
1106 else if ((code & 0xfc) == 0x60)
1107 code = 0x18 + (code & 0x03);
1108 else if ((code & 0xfc) == 0x64)
1109 code = 0x08 + (code & 0x03);
1110 else if ((code & 0xfc) == 0x68)
1111 code = 0x1c + (code & 0x03);
1112 else if ((code & 0xfc) == 0x6c)
1113 code = 0x0c + (code & 0x03);
1114 else if ((code & 0xfc) == 0x80)
1115 code = 0xc0 + (code & 0x07);
1116 else if ((code & 0xfc) == 0xf0)
1117 code = 0xb0 + (code & 0x07);
1118 else if ((code & 0xfc) == 0x00)
1119 code = 0x80 + (code & 0x07);
1120 else if ((code & 0xfc) == 0x10)
1121 code = 0xa0 + (code & 0x07);
1122 else if ((code & 0xfc) == 0xb0)
1123 code = 0x70 + (code & 0x07);
1124 else if ((code & 0xfc) == 0x30)
1125 code = 0x60 + (code & 0x07);
1126 else if ((code & 0xfc) == 0xa0)
1127 code = 0xd0 + (code & 0x07);
1128 else if ((code & 0xfc) == 0x20)
1129 code = 0x90 + (code & 0x07);
1130 else if ((code & 0xfc) == 0x90)
1131 code = 0x50 + (code & 0x07);
1132
1133 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
1134
1135 /* Fix the relocation's type. */
1136 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1137 R_MN10200_16);
1138
1139 /* Delete one bytes of data. */
1140 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
1141 irel->r_offset + 2, 1))
1142 goto error_return;
1143
1144 /* That will change things, so, we should relax again.
1145 Note that this is not required, and it may be slow. */
1146 *again = TRUE;
1147 break;
1148
1149 /* movb (abs24),dn ->movbu (abs16),dn extxb bn */
1150 case 0xc4:
1151 /* Note that we've changed the reldection contents, etc. */
1152 elf_section_data (sec)->relocs = internal_relocs;
1153 elf_section_data (sec)->this_hdr.contents = contents;
1154 symtab_hdr->contents = (unsigned char *) isymbuf;
1155
1156 bfd_put_8 (abfd, 0xcc + (code & 0x03),
1157 contents + irel->r_offset - 2);
1158
1159 bfd_put_8 (abfd, 0xb8 + (code & 0x03),
1160 contents + irel->r_offset - 1);
1161
1162 /* Fix the relocation's type. */
1163 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1164 R_MN10200_16);
1165
1166 /* The reloc will be applied one byte in front of its
1167 current location. */
1168 irel->r_offset -= 1;
1169
1170 /* Delete one bytes of data. */
1171 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
1172 irel->r_offset + 2, 1))
1173 goto error_return;
1174
1175 /* That will change things, so, we should relax again.
1176 Note that this is not required, and it may be slow. */
1177 *again = TRUE;
1178 break;
1179 }
1180 }
1181 }
1182 }
1183
1184 if (isymbuf != NULL
1185 && symtab_hdr->contents != (unsigned char *) isymbuf)
1186 {
1187 if (! link_info->keep_memory)
1188 free (isymbuf);
1189 else
1190 {
1191 /* Cache the symbols for elf_link_input_bfd. */
1192 symtab_hdr->contents = (unsigned char *) isymbuf;
1193 }
1194 }
1195
1196 if (contents != NULL
1197 && elf_section_data (sec)->this_hdr.contents != contents)
1198 {
1199 if (! link_info->keep_memory)
1200 free (contents);
1201 else
1202 {
1203 /* Cache the section contents for elf_link_input_bfd. */
1204 elf_section_data (sec)->this_hdr.contents = contents;
1205 }
1206 }
1207
1208 if (internal_relocs != NULL
1209 && elf_section_data (sec)->relocs != internal_relocs)
1210 free (internal_relocs);
1211
1212 return TRUE;
1213
1214 error_return:
1215 if (isymbuf != NULL
1216 && symtab_hdr->contents != (unsigned char *) isymbuf)
1217 free (isymbuf);
1218 if (contents != NULL
1219 && elf_section_data (sec)->this_hdr.contents != contents)
1220 free (contents);
1221 if (internal_relocs != NULL
1222 && elf_section_data (sec)->relocs != internal_relocs)
1223 free (internal_relocs);
1224
1225 return FALSE;
1226 }
1227
1228 /* Return TRUE if a symbol exists at the given address, else return
1229 FALSE. */
1230 static bfd_boolean
1231 mn10200_elf_symbol_address_p (bfd *abfd,
1232 asection *sec,
1233 Elf_Internal_Sym *isym,
1234 bfd_vma addr)
1235 {
1236 Elf_Internal_Shdr *symtab_hdr;
1237 unsigned int sec_shndx;
1238 Elf_Internal_Sym *isymend;
1239 struct elf_link_hash_entry **sym_hashes;
1240 struct elf_link_hash_entry **end_hashes;
1241 unsigned int symcount;
1242
1243 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1244
1245 /* Examine all the local symbols. */
1246 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1247 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1248 {
1249 if (isym->st_shndx == sec_shndx
1250 && isym->st_value == addr)
1251 return TRUE;
1252 }
1253
1254 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1255 - symtab_hdr->sh_info);
1256 sym_hashes = elf_sym_hashes (abfd);
1257 end_hashes = sym_hashes + symcount;
1258 for (; sym_hashes < end_hashes; sym_hashes++)
1259 {
1260 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1261 if ((sym_hash->root.type == bfd_link_hash_defined
1262 || sym_hash->root.type == bfd_link_hash_defweak)
1263 && sym_hash->root.u.def.section == sec
1264 && sym_hash->root.u.def.value == addr)
1265 return TRUE;
1266 }
1267
1268 return FALSE;
1269 }
1270
1271 /* This is a version of bfd_generic_get_relocated_section_contents
1272 which uses mn10200_elf_relocate_section. */
1273
1274 static bfd_byte *
1275 mn10200_elf_get_relocated_section_contents (bfd *output_bfd,
1276 struct bfd_link_info *link_info,
1277 struct bfd_link_order *link_order,
1278 bfd_byte *data,
1279 bfd_boolean relocatable,
1280 asymbol **symbols)
1281 {
1282 Elf_Internal_Shdr *symtab_hdr;
1283 asection *input_section = link_order->u.indirect.section;
1284 bfd *input_bfd = input_section->owner;
1285 asection **sections = NULL;
1286 Elf_Internal_Rela *internal_relocs = NULL;
1287 Elf_Internal_Sym *isymbuf = NULL;
1288
1289 /* We only need to handle the case of relaxing, or of having a
1290 particular set of section contents, specially. */
1291 if (relocatable
1292 || elf_section_data (input_section)->this_hdr.contents == NULL)
1293 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
1294 link_order, data,
1295 relocatable,
1296 symbols);
1297
1298 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1299
1300 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
1301 (size_t) input_section->size);
1302
1303 if ((input_section->flags & SEC_RELOC) != 0
1304 && input_section->reloc_count > 0)
1305 {
1306 Elf_Internal_Sym *isym;
1307 Elf_Internal_Sym *isymend;
1308 asection **secpp;
1309 bfd_size_type amt;
1310
1311 internal_relocs = (_bfd_elf_link_read_relocs
1312 (input_bfd, input_section, NULL,
1313 (Elf_Internal_Rela *) NULL, FALSE));
1314 if (internal_relocs == NULL)
1315 goto error_return;
1316
1317 if (symtab_hdr->sh_info != 0)
1318 {
1319 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1320 if (isymbuf == NULL)
1321 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1322 symtab_hdr->sh_info, 0,
1323 NULL, NULL, NULL);
1324 if (isymbuf == NULL)
1325 goto error_return;
1326 }
1327
1328 amt = symtab_hdr->sh_info;
1329 amt *= sizeof (asection *);
1330 sections = (asection **) bfd_malloc (amt);
1331 if (sections == NULL && amt != 0)
1332 goto error_return;
1333
1334 isymend = isymbuf + symtab_hdr->sh_info;
1335 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
1336 {
1337 asection *isec;
1338
1339 if (isym->st_shndx == SHN_UNDEF)
1340 isec = bfd_und_section_ptr;
1341 else if (isym->st_shndx == SHN_ABS)
1342 isec = bfd_abs_section_ptr;
1343 else if (isym->st_shndx == SHN_COMMON)
1344 isec = bfd_com_section_ptr;
1345 else
1346 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
1347
1348 *secpp = isec;
1349 }
1350
1351 if (! mn10200_elf_relocate_section (output_bfd, link_info, input_bfd,
1352 input_section, data, internal_relocs,
1353 isymbuf, sections))
1354 goto error_return;
1355
1356 if (sections != NULL)
1357 free (sections);
1358 if (isymbuf != NULL
1359 && symtab_hdr->contents != (unsigned char *) isymbuf)
1360 free (isymbuf);
1361 if (elf_section_data (input_section)->relocs != internal_relocs)
1362 free (internal_relocs);
1363 }
1364
1365 return data;
1366
1367 error_return:
1368 if (sections != NULL)
1369 free (sections);
1370 if (isymbuf != NULL
1371 && symtab_hdr->contents != (unsigned char *) isymbuf)
1372 free (isymbuf);
1373 if (internal_relocs != NULL
1374 && elf_section_data (input_section)->relocs != internal_relocs)
1375 free (internal_relocs);
1376 return NULL;
1377 }
1378
1379 #define TARGET_LITTLE_SYM bfd_elf32_mn10200_vec
1380 #define TARGET_LITTLE_NAME "elf32-mn10200"
1381 #define ELF_ARCH bfd_arch_mn10200
1382 #define ELF_MACHINE_CODE EM_MN10200
1383 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10200
1384 #define ELF_MAXPAGESIZE 0x1000
1385
1386 #define elf_backend_rela_normal 1
1387 #define elf_info_to_howto mn10200_info_to_howto
1388 #define elf_info_to_howto_rel 0
1389 #define elf_backend_relocate_section mn10200_elf_relocate_section
1390 #define bfd_elf32_bfd_relax_section mn10200_elf_relax_section
1391 #define bfd_elf32_bfd_get_relocated_section_contents \
1392 mn10200_elf_get_relocated_section_contents
1393
1394 #define elf_symbol_leading_char '_'
1395
1396 #include "elf32-target.h"
The GNU Binutils are a collection of binary tools.