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[ bfd/ChangeLog ]
[binutils.git] / bfd / elf-m10200.c
bloba39e4389d073b5a1356f6f41b50c205f1b96198d
1 /* Matsushita 10200 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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 2 of the License, or
10 (at your option) any later version.
11
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.
16
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 02110-1301, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25
26 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
27 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
28 static void mn10200_info_to_howto
29 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
30 static bfd_boolean mn10200_elf_relax_delete_bytes
31 PARAMS ((bfd *, asection *, bfd_vma, int));
32 static bfd_boolean mn10200_elf_symbol_address_p
33 PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma));
34 static bfd_reloc_status_type mn10200_elf_final_link_relocate
35 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *,
36 bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
37 struct bfd_link_info *, asection *, int));
38 static bfd_boolean mn10200_elf_relocate_section
39 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
40 bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *,
41 asection **));
42 static bfd_boolean mn10200_elf_relax_section
43 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
44 static bfd_byte * mn10200_elf_get_relocated_section_contents
45 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
46 bfd_byte *, bfd_boolean, asymbol **));
47
48 enum reloc_type {
49 R_MN10200_NONE = 0,
50 R_MN10200_32,
51 R_MN10200_16,
52 R_MN10200_8,
53 R_MN10200_24,
54 R_MN10200_PCREL8,
55 R_MN10200_PCREL16,
56 R_MN10200_PCREL24,
57 R_MN10200_MAX
58 };
59
60 static reloc_howto_type elf_mn10200_howto_table[] = {
61 /* Dummy relocation. Does nothing. */
62 HOWTO (R_MN10200_NONE,
63 0,
64 2,
65 16,
66 FALSE,
67 0,
68 complain_overflow_bitfield,
69 bfd_elf_generic_reloc,
70 "R_MN10200_NONE",
71 FALSE,
72 0,
73 0,
74 FALSE),
75 /* Standard 32 bit reloc. */
76 HOWTO (R_MN10200_32,
77 0,
78 2,
79 32,
80 FALSE,
81 0,
82 complain_overflow_bitfield,
83 bfd_elf_generic_reloc,
84 "R_MN10200_32",
85 FALSE,
86 0xffffffff,
87 0xffffffff,
88 FALSE),
89 /* Standard 16 bit reloc. */
90 HOWTO (R_MN10200_16,
91 0,
92 1,
93 16,
94 FALSE,
95 0,
96 complain_overflow_bitfield,
97 bfd_elf_generic_reloc,
98 "R_MN10200_16",
99 FALSE,
100 0xffff,
101 0xffff,
102 FALSE),
103 /* Standard 8 bit reloc. */
104 HOWTO (R_MN10200_8,
105 0,
106 0,
107 8,
108 FALSE,
109 0,
110 complain_overflow_bitfield,
111 bfd_elf_generic_reloc,
112 "R_MN10200_8",
113 FALSE,
114 0xff,
115 0xff,
116 FALSE),
117 /* Standard 24 bit reloc. */
118 HOWTO (R_MN10200_24,
119 0,
120 2,
121 24,
122 FALSE,
123 0,
124 complain_overflow_bitfield,
125 bfd_elf_generic_reloc,
126 "R_MN10200_24",
127 FALSE,
128 0xffffff,
129 0xffffff,
130 FALSE),
131 /* Simple 8 pc-relative reloc. */
132 HOWTO (R_MN10200_PCREL8,
133 0,
134 0,
135 8,
136 TRUE,
137 0,
138 complain_overflow_bitfield,
139 bfd_elf_generic_reloc,
140 "R_MN10200_PCREL8",
141 FALSE,
142 0xff,
143 0xff,
144 TRUE),
145 /* Simple 16 pc-relative reloc. */
146 HOWTO (R_MN10200_PCREL16,
147 0,
148 1,
149 16,
150 TRUE,
151 0,
152 complain_overflow_bitfield,
153 bfd_elf_generic_reloc,
154 "R_MN10200_PCREL16",
155 FALSE,
156 0xffff,
157 0xffff,
158 TRUE),
159 /* Simple 32bit pc-relative reloc with a 1 byte adjustment
160 to get the pc-relative offset correct. */
161 HOWTO (R_MN10200_PCREL24,
162 0,
163 2,
164 24,
165 TRUE,
166 0,
167 complain_overflow_bitfield,
168 bfd_elf_generic_reloc,
169 "R_MN10200_PCREL24",
170 FALSE,
171 0xffffff,
172 0xffffff,
173 TRUE),
174 };
175
176 struct mn10200_reloc_map {
177 bfd_reloc_code_real_type bfd_reloc_val;
178 unsigned char elf_reloc_val;
179 };
180
181 static const struct mn10200_reloc_map mn10200_reloc_map[] = {
182 { BFD_RELOC_NONE , R_MN10200_NONE , },
183 { BFD_RELOC_32 , R_MN10200_32 , },
184 { BFD_RELOC_16 , R_MN10200_16 , },
185 { BFD_RELOC_8 , R_MN10200_8 , },
186 { BFD_RELOC_24 , R_MN10200_24 , },
187 { BFD_RELOC_8_PCREL , R_MN10200_PCREL8 , },
188 { BFD_RELOC_16_PCREL, R_MN10200_PCREL16, },
189 { BFD_RELOC_24_PCREL, R_MN10200_PCREL24, },
190 };
191
192 static reloc_howto_type *
193 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
194 bfd *abfd ATTRIBUTE_UNUSED;
195 bfd_reloc_code_real_type code;
196 {
197 unsigned int i;
198
199 for (i = 0;
200 i < sizeof (mn10200_reloc_map) / sizeof (struct mn10200_reloc_map);
201 i++)
202 {
203 if (mn10200_reloc_map[i].bfd_reloc_val == code)
204 return &elf_mn10200_howto_table[mn10200_reloc_map[i].elf_reloc_val];
205 }
206
207 return NULL;
208 }
209
210 /* Set the howto pointer for an MN10200 ELF reloc. */
211
212 static void
213 mn10200_info_to_howto (abfd, cache_ptr, dst)
214 bfd *abfd ATTRIBUTE_UNUSED;
215 arelent *cache_ptr;
216 Elf_Internal_Rela *dst;
217 {
218 unsigned int r_type;
219
220 r_type = ELF32_R_TYPE (dst->r_info);
221 BFD_ASSERT (r_type < (unsigned int) R_MN10200_MAX);
222 cache_ptr->howto = &elf_mn10200_howto_table[r_type];
223 }
224
225 /* Perform a relocation as part of a final link. */
226
227 static bfd_reloc_status_type
228 mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
229 input_section, contents, offset, value,
230 addend, info, sym_sec, is_local)
231 reloc_howto_type *howto;
232 bfd *input_bfd;
233 bfd *output_bfd ATTRIBUTE_UNUSED;
234 asection *input_section;
235 bfd_byte *contents;
236 bfd_vma offset;
237 bfd_vma value;
238 bfd_vma addend;
239 struct bfd_link_info *info ATTRIBUTE_UNUSED;
240 asection *sym_sec ATTRIBUTE_UNUSED;
241 int is_local ATTRIBUTE_UNUSED;
242 {
243 unsigned long r_type = howto->type;
244 bfd_byte *hit_data = contents + offset;
245
246 switch (r_type)
247 {
248
249 case R_MN10200_NONE:
250 return bfd_reloc_ok;
251
252 case R_MN10200_32:
253 value += addend;
254 bfd_put_32 (input_bfd, value, hit_data);
255 return bfd_reloc_ok;
256
257 case R_MN10200_16:
258 value += addend;
259
260 if ((long) value > 0x7fff || (long) value < -0x8000)
261 return bfd_reloc_overflow;
262
263 bfd_put_16 (input_bfd, value, hit_data);
264 return bfd_reloc_ok;
265
266 case R_MN10200_8:
267 value += addend;
268
269 if ((long) value > 0x7f || (long) value < -0x80)
270 return bfd_reloc_overflow;
271
272 bfd_put_8 (input_bfd, value, hit_data);
273 return bfd_reloc_ok;
274
275 case R_MN10200_24:
276 value += addend;
277
278 if ((long) value > 0x7fffff || (long) value < -0x800000)
279 return bfd_reloc_overflow;
280
281 value &= 0xffffff;
282 value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
283 bfd_put_32 (input_bfd, value, hit_data);
284 return bfd_reloc_ok;
285
286 case R_MN10200_PCREL8:
287 value -= (input_section->output_section->vma
288 + input_section->output_offset);
289 value -= (offset + 1);
290 value += addend;
291
292 if ((long) value > 0xff || (long) value < -0x100)
293 return bfd_reloc_overflow;
294
295 bfd_put_8 (input_bfd, value, hit_data);
296 return bfd_reloc_ok;
297
298 case R_MN10200_PCREL16:
299 value -= (input_section->output_section->vma
300 + input_section->output_offset);
301 value -= (offset + 2);
302 value += addend;
303
304 if ((long) value > 0xffff || (long) value < -0x10000)
305 return bfd_reloc_overflow;
306
307 bfd_put_16 (input_bfd, value, hit_data);
308 return bfd_reloc_ok;
309
310 case R_MN10200_PCREL24:
311 value -= (input_section->output_section->vma
312 + input_section->output_offset);
313 value -= (offset + 3);
314 value += addend;
315
316 if ((long) value > 0xffffff || (long) value < -0x1000000)
317 return bfd_reloc_overflow;
318
319 value &= 0xffffff;
320 value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
321 bfd_put_32 (input_bfd, value, hit_data);
322 return bfd_reloc_ok;
323
324 default:
325 return bfd_reloc_notsupported;
326 }
327 }
328 \f
329 /* Relocate an MN10200 ELF section. */
330 static bfd_boolean
331 mn10200_elf_relocate_section (output_bfd, info, input_bfd, input_section,
332 contents, relocs, local_syms, local_sections)
333 bfd *output_bfd;
334 struct bfd_link_info *info;
335 bfd *input_bfd;
336 asection *input_section;
337 bfd_byte *contents;
338 Elf_Internal_Rela *relocs;
339 Elf_Internal_Sym *local_syms;
340 asection **local_sections;
341 {
342 Elf_Internal_Shdr *symtab_hdr;
343 struct elf_link_hash_entry **sym_hashes;
344 Elf_Internal_Rela *rel, *relend;
345
346 if (info->relocatable)
347 return TRUE;
348
349 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
350 sym_hashes = elf_sym_hashes (input_bfd);
351
352 rel = relocs;
353 relend = relocs + input_section->reloc_count;
354 for (; rel < relend; rel++)
355 {
356 int r_type;
357 reloc_howto_type *howto;
358 unsigned long r_symndx;
359 Elf_Internal_Sym *sym;
360 asection *sec;
361 struct elf_link_hash_entry *h;
362 bfd_vma relocation;
363 bfd_reloc_status_type r;
364
365 r_symndx = ELF32_R_SYM (rel->r_info);
366 r_type = ELF32_R_TYPE (rel->r_info);
367 howto = elf_mn10200_howto_table + r_type;
368
369 h = NULL;
370 sym = NULL;
371 sec = NULL;
372 if (r_symndx < symtab_hdr->sh_info)
373 {
374 sym = local_syms + r_symndx;
375 sec = local_sections[r_symndx];
376 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
377 }
378 else
379 {
380 bfd_boolean unresolved_reloc, warned;
381
382 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
383 r_symndx, symtab_hdr, sym_hashes,
384 h, sec, relocation,
385 unresolved_reloc, warned);
386 }
387
388 r = mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
389 input_section,
390 contents, rel->r_offset,
391 relocation, rel->r_addend,
392 info, sec, h == NULL);
393
394 if (r != bfd_reloc_ok)
395 {
396 const char *name;
397 const char *msg = (const char *) 0;
398
399 if (h != NULL)
400 name = h->root.root.string;
401 else
402 {
403 name = (bfd_elf_string_from_elf_section
404 (input_bfd, symtab_hdr->sh_link, sym->st_name));
405 if (name == NULL || *name == '\0')
406 name = bfd_section_name (input_bfd, sec);
407 }
408
409 switch (r)
410 {
411 case bfd_reloc_overflow:
412 if (! ((*info->callbacks->reloc_overflow)
413 (info, (h ? &h->root : NULL), name, howto->name,
414 (bfd_vma) 0, input_bfd, input_section,
415 rel->r_offset)))
416 return FALSE;
417 break;
418
419 case bfd_reloc_undefined:
420 if (! ((*info->callbacks->undefined_symbol)
421 (info, name, input_bfd, input_section,
422 rel->r_offset, TRUE)))
423 return FALSE;
424 break;
425
426 case bfd_reloc_outofrange:
427 msg = _("internal error: out of range error");
428 goto common_error;
429
430 case bfd_reloc_notsupported:
431 msg = _("internal error: unsupported relocation error");
432 goto common_error;
433
434 case bfd_reloc_dangerous:
435 msg = _("internal error: dangerous error");
436 goto common_error;
437
438 default:
439 msg = _("internal error: unknown error");
440 /* fall through */
441
442 common_error:
443 if (!((*info->callbacks->warning)
444 (info, msg, name, input_bfd, input_section,
445 rel->r_offset)))
446 return FALSE;
447 break;
448 }
449 }
450 }
451
452 return TRUE;
453 }
454
455 /* This function handles relaxing for the mn10200.
456
457 There are quite a few relaxing opportunities available on the mn10200:
458
459 * jsr:24 -> jsr:16 2 bytes
460
461 * jmp:24 -> jmp:16 2 bytes
462 * jmp:16 -> bra:8 1 byte
463
464 * If the previous instruction is a conditional branch
465 around the jump/bra, we may be able to reverse its condition
466 and change its target to the jump's target. The jump/bra
467 can then be deleted. 2 bytes
468
469 * mov abs24 -> mov abs16 2 byte savings
470
471 * Most instructions which accept imm24 can relax to imm16 2 bytes
472 - Most instructions which accept imm16 can relax to imm8 1 byte
473
474 * Most instructions which accept d24 can relax to d16 2 bytes
475 - Most instructions which accept d16 can relax to d8 1 byte
476
477 abs24, imm24, d24 all look the same at the reloc level. It
478 might make the code simpler if we had different relocs for
479 the various relaxable operand types.
480
481 We don't handle imm16->imm8 or d16->d8 as they're very rare
482 and somewhat more difficult to support. */
483
484 static bfd_boolean
485 mn10200_elf_relax_section (abfd, sec, link_info, again)
486 bfd *abfd;
487 asection *sec;
488 struct bfd_link_info *link_info;
489 bfd_boolean *again;
490 {
491 Elf_Internal_Shdr *symtab_hdr;
492 Elf_Internal_Rela *internal_relocs;
493 Elf_Internal_Rela *irel, *irelend;
494 bfd_byte *contents = NULL;
495 Elf_Internal_Sym *isymbuf = NULL;
496
497 /* Assume nothing changes. */
498 *again = FALSE;
499
500 /* We don't have to do anything for a relocatable link, if
501 this section does not have relocs, or if this is not a
502 code section. */
503 if (link_info->relocatable
504 || (sec->flags & SEC_RELOC) == 0
505 || sec->reloc_count == 0
506 || (sec->flags & SEC_CODE) == 0)
507 return TRUE;
508
509 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
510
511 /* Get a copy of the native relocations. */
512 internal_relocs = (_bfd_elf_link_read_relocs
513 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
514 link_info->keep_memory));
515 if (internal_relocs == NULL)
516 goto error_return;
517
518 /* Walk through them looking for relaxing opportunities. */
519 irelend = internal_relocs + sec->reloc_count;
520 for (irel = internal_relocs; irel < irelend; irel++)
521 {
522 bfd_vma symval;
523
524 /* If this isn't something that can be relaxed, then ignore
525 this reloc. */
526 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_NONE
527 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_8
528 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_MAX)
529 continue;
530
531 /* Get the section contents if we haven't done so already. */
532 if (contents == NULL)
533 {
534 /* Get cached copy if it exists. */
535 if (elf_section_data (sec)->this_hdr.contents != NULL)
536 contents = elf_section_data (sec)->this_hdr.contents;
537 else
538 {
539 /* Go get them off disk. */
540 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
541 goto error_return;
542 }
543 }
544
545 /* Read this BFD's local symbols if we haven't done so already. */
546 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
547 {
548 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
549 if (isymbuf == NULL)
550 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
551 symtab_hdr->sh_info, 0,
552 NULL, NULL, NULL);
553 if (isymbuf == NULL)
554 goto error_return;
555 }
556
557 /* Get the value of the symbol referred to by the reloc. */
558 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
559 {
560 /* A local symbol. */
561 Elf_Internal_Sym *isym;
562 asection *sym_sec;
563
564 isym = isymbuf + ELF32_R_SYM (irel->r_info);
565 if (isym->st_shndx == SHN_UNDEF)
566 sym_sec = bfd_und_section_ptr;
567 else if (isym->st_shndx == SHN_ABS)
568 sym_sec = bfd_abs_section_ptr;
569 else if (isym->st_shndx == SHN_COMMON)
570 sym_sec = bfd_com_section_ptr;
571 else
572 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
573 symval = (isym->st_value
574 + sym_sec->output_section->vma
575 + sym_sec->output_offset);
576 }
577 else
578 {
579 unsigned long indx;
580 struct elf_link_hash_entry *h;
581
582 /* An external symbol. */
583 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
584 h = elf_sym_hashes (abfd)[indx];
585 BFD_ASSERT (h != NULL);
586 if (h->root.type != bfd_link_hash_defined
587 && h->root.type != bfd_link_hash_defweak)
588 {
589 /* This appears to be a reference to an undefined
590 symbol. Just ignore it--it will be caught by the
591 regular reloc processing. */
592 continue;
593 }
594
595 symval = (h->root.u.def.value
596 + h->root.u.def.section->output_section->vma
597 + h->root.u.def.section->output_offset);
598 }
599
600 /* For simplicity of coding, we are going to modify the section
601 contents, the section relocs, and the BFD symbol table. We
602 must tell the rest of the code not to free up this
603 information. It would be possible to instead create a table
604 of changes which have to be made, as is done in coff-mips.c;
605 that would be more work, but would require less memory when
606 the linker is run. */
607
608 /* Try to turn a 24bit pc-relative branch/call into a 16bit pc-relative
609 branch/call. */
610 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL24)
611 {
612 bfd_vma value = symval;
613
614 /* Deal with pc-relative gunk. */
615 value -= (sec->output_section->vma + sec->output_offset);
616 value -= (irel->r_offset + 3);
617 value += irel->r_addend;
618
619 /* See if the value will fit in 16 bits, note the high value is
620 0x7fff + 2 as the target will be two bytes closer if we are
621 able to relax. */
622 if ((long) value < 0x8001 && (long) value > -0x8000)
623 {
624 unsigned char code;
625
626 /* Get the opcode. */
627 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
628
629 if (code != 0xe0 && code != 0xe1)
630 continue;
631
632 /* Note that we've changed the relocs, section contents, etc. */
633 elf_section_data (sec)->relocs = internal_relocs;
634 elf_section_data (sec)->this_hdr.contents = contents;
635 symtab_hdr->contents = (unsigned char *) isymbuf;
636
637 /* Fix the opcode. */
638 if (code == 0xe0)
639 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 2);
640 else if (code == 0xe1)
641 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 2);
642
643 /* Fix the relocation's type. */
644 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
645 R_MN10200_PCREL16);
646
647 /* The opcode got shorter too, so we have to fix the offset. */
648 irel->r_offset -= 1;
649
650 /* Delete two bytes of data. */
651 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
652 irel->r_offset + 1, 2))
653 goto error_return;
654
655 /* That will change things, so, we should relax again.
656 Note that this is not required, and it may be slow. */
657 *again = TRUE;
658 }
659 }
660
661 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
662 branch. */
663 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL16)
664 {
665 bfd_vma value = symval;
666
667 /* Deal with pc-relative gunk. */
668 value -= (sec->output_section->vma + sec->output_offset);
669 value -= (irel->r_offset + 2);
670 value += irel->r_addend;
671
672 /* See if the value will fit in 8 bits, note the high value is
673 0x7f + 1 as the target will be one bytes closer if we are
674 able to relax. */
675 if ((long) value < 0x80 && (long) value > -0x80)
676 {
677 unsigned char code;
678
679 /* Get the opcode. */
680 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
681
682 if (code != 0xfc)
683 continue;
684
685 /* Note that we've changed the relocs, section contents, etc. */
686 elf_section_data (sec)->relocs = internal_relocs;
687 elf_section_data (sec)->this_hdr.contents = contents;
688 symtab_hdr->contents = (unsigned char *) isymbuf;
689
690 /* Fix the opcode. */
691 bfd_put_8 (abfd, 0xea, contents + irel->r_offset - 1);
692
693 /* Fix the relocation's type. */
694 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
695 R_MN10200_PCREL8);
696
697 /* Delete one byte of data. */
698 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
699 irel->r_offset + 1, 1))
700 goto error_return;
701
702 /* That will change things, so, we should relax again.
703 Note that this is not required, and it may be slow. */
704 *again = TRUE;
705 }
706 }
707
708 /* Try to eliminate an unconditional 8 bit pc-relative branch
709 which immediately follows a conditional 8 bit pc-relative
710 branch around the unconditional branch.
711
712 original: new:
713 bCC lab1 bCC' lab2
714 bra lab2
715 lab1: lab1:
716
717 This happens when the bCC can't reach lab2 at assembly time,
718 but due to other relaxations it can reach at link time. */
719 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL8)
720 {
721 Elf_Internal_Rela *nrel;
722 bfd_vma value = symval;
723 unsigned char code;
724
725 /* Deal with pc-relative gunk. */
726 value -= (sec->output_section->vma + sec->output_offset);
727 value -= (irel->r_offset + 1);
728 value += irel->r_addend;
729
730 /* Do nothing if this reloc is the last byte in the section. */
731 if (irel->r_offset == sec->size)
732 continue;
733
734 /* See if the next instruction is an unconditional pc-relative
735 branch, more often than not this test will fail, so we
736 test it first to speed things up. */
737 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
738 if (code != 0xea)
739 continue;
740
741 /* Also make sure the next relocation applies to the next
742 instruction and that it's a pc-relative 8 bit branch. */
743 nrel = irel + 1;
744 if (nrel == irelend
745 || irel->r_offset + 2 != nrel->r_offset
746 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10200_PCREL8)
747 continue;
748
749 /* Make sure our destination immediately follows the
750 unconditional branch. */
751 if (symval != (sec->output_section->vma + sec->output_offset
752 + irel->r_offset + 3))
753 continue;
754
755 /* Now make sure we are a conditional branch. This may not
756 be necessary, but why take the chance.
757
758 Note these checks assume that R_MN10200_PCREL8 relocs
759 only occur on bCC and bCCx insns. If they occured
760 elsewhere, we'd need to know the start of this insn
761 for this check to be accurate. */
762 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
763 if (code != 0xe0 && code != 0xe1 && code != 0xe2
764 && code != 0xe3 && code != 0xe4 && code != 0xe5
765 && code != 0xe6 && code != 0xe7 && code != 0xe8
766 && code != 0xe9 && code != 0xec && code != 0xed
767 && code != 0xee && code != 0xef && code != 0xfc
768 && code != 0xfd && code != 0xfe && code != 0xff)
769 continue;
770
771 /* We also have to be sure there is no symbol/label
772 at the unconditional branch. */
773 if (mn10200_elf_symbol_address_p (abfd, sec, isymbuf,
774 irel->r_offset + 1))
775 continue;
776
777 /* Note that we've changed the relocs, section contents, etc. */
778 elf_section_data (sec)->relocs = internal_relocs;
779 elf_section_data (sec)->this_hdr.contents = contents;
780 symtab_hdr->contents = (unsigned char *) isymbuf;
781
782 /* Reverse the condition of the first branch. */
783 switch (code)
784 {
785 case 0xfc:
786 code = 0xfd;
787 break;
788 case 0xfd:
789 code = 0xfc;
790 break;
791 case 0xfe:
792 code = 0xff;
793 break;
794 case 0xff:
795 code = 0xfe;
796 break;
797 case 0xe8:
798 code = 0xe9;
799 break;
800 case 0xe9:
801 code = 0xe8;
802 break;
803 case 0xe0:
804 code = 0xe2;
805 break;
806 case 0xe2:
807 code = 0xe0;
808 break;
809 case 0xe3:
810 code = 0xe1;
811 break;
812 case 0xe1:
813 code = 0xe3;
814 break;
815 case 0xe4:
816 code = 0xe6;
817 break;
818 case 0xe6:
819 code = 0xe4;
820 break;
821 case 0xe7:
822 code = 0xe5;
823 break;
824 case 0xe5:
825 code = 0xe7;
826 break;
827 case 0xec:
828 code = 0xed;
829 break;
830 case 0xed:
831 code = 0xec;
832 break;
833 case 0xee:
834 code = 0xef;
835 break;
836 case 0xef:
837 code = 0xee;
838 break;
839 }
840 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
841
842 /* Set the reloc type and symbol for the first branch
843 from the second branch. */
844 irel->r_info = nrel->r_info;
845
846 /* Make the reloc for the second branch a null reloc. */
847 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
848 R_MN10200_NONE);
849
850 /* Delete two bytes of data. */
851 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
852 irel->r_offset + 1, 2))
853 goto error_return;
854
855 /* That will change things, so, we should relax again.
856 Note that this is not required, and it may be slow. */
857 *again = TRUE;
858 }
859
860 /* Try to turn a 24bit immediate, displacement or absolute address
861 into a 16bit immediate, displacement or absolute address. */
862 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_24)
863 {
864 bfd_vma value = symval;
865
866 /* See if the value will fit in 16 bits.
867 We allow any 16bit match here. We prune those we can't
868 handle below. */
869 if ((long) value < 0x7fff && (long) value > -0x8000)
870 {
871 unsigned char code;
872
873 /* All insns which have 24bit operands are 5 bytes long,
874 the first byte will always be 0xf4, but we double check
875 it just in case. */
876
877 /* Get the first opcode. */
878 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
879
880 if (code != 0xf4)
881 continue;
882
883 /* Get the second opcode. */
884 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
885
886 switch (code & 0xfc)
887 {
888 /* mov imm24,dn -> mov imm16,dn */
889 case 0x70:
890 /* Not safe if the high bit is on as relaxing may
891 move the value out of high mem and thus not fit
892 in a signed 16bit value. */
893 if (value & 0x8000)
894 continue;
895
896 /* Note that we've changed the relocation contents, etc. */
897 elf_section_data (sec)->relocs = internal_relocs;
898 elf_section_data (sec)->this_hdr.contents = contents;
899 symtab_hdr->contents = (unsigned char *) isymbuf;
900
901 /* Fix the opcode. */
902 bfd_put_8 (abfd, 0xf8 + (code & 0x03),
903 contents + irel->r_offset - 2);
904
905 /* Fix the relocation's type. */
906 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
907 R_MN10200_16);
908
909 /* The opcode got shorter too, so we have to fix the
910 offset. */
911 irel->r_offset -= 1;
912
913 /* Delete two bytes of data. */
914 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
915 irel->r_offset + 1, 2))
916 goto error_return;
917
918 /* That will change things, so, we should relax again.
919 Note that this is not required, and it may be slow. */
920 *again = TRUE;
921 break;
922
923 /* mov imm24,an -> mov imm16,an
924 cmp imm24,an -> cmp imm16,an
925 mov (abs24),dn -> mov (abs16),dn
926 mov dn,(abs24) -> mov dn,(abs16)
927 movb dn,(abs24) -> movb dn,(abs16)
928 movbu (abs24),dn -> movbu (abs16),dn */
929 case 0x74:
930 case 0x7c:
931 case 0xc0:
932 case 0x40:
933 case 0x44:
934 case 0xc8:
935 /* Note that we've changed the relocation contents, etc. */
936 elf_section_data (sec)->relocs = internal_relocs;
937 elf_section_data (sec)->this_hdr.contents = contents;
938 symtab_hdr->contents = (unsigned char *) isymbuf;
939
940 if ((code & 0xfc) == 0x74)
941 code = 0xdc + (code & 0x03);
942 else if ((code & 0xfc) == 0x7c)
943 code = 0xec + (code & 0x03);
944 else if ((code & 0xfc) == 0xc0)
945 code = 0xc8 + (code & 0x03);
946 else if ((code & 0xfc) == 0x40)
947 code = 0xc0 + (code & 0x03);
948 else if ((code & 0xfc) == 0x44)
949 code = 0xc4 + (code & 0x03);
950 else if ((code & 0xfc) == 0xc8)
951 code = 0xcc + (code & 0x03);
952
953 /* Fix the opcode. */
954 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
955
956 /* Fix the relocation's type. */
957 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
958 R_MN10200_16);
959
960 /* The opcode got shorter too, so we have to fix the
961 offset. */
962 irel->r_offset -= 1;
963
964 /* Delete two bytes of data. */
965 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
966 irel->r_offset + 1, 2))
967 goto error_return;
968
969 /* That will change things, so, we should relax again.
970 Note that this is not required, and it may be slow. */
971 *again = TRUE;
972 break;
973
974 /* cmp imm24,dn -> cmp imm16,dn
975 mov (abs24),an -> mov (abs16),an
976 mov an,(abs24) -> mov an,(abs16)
977 add imm24,dn -> add imm16,dn
978 add imm24,an -> add imm16,an
979 sub imm24,dn -> sub imm16,dn
980 sub imm24,an -> sub imm16,an
981 And all d24->d16 in memory ops. */
982 case 0x78:
983 case 0xd0:
984 case 0x50:
985 case 0x60:
986 case 0x64:
987 case 0x68:
988 case 0x6c:
989 case 0x80:
990 case 0xf0:
991 case 0x00:
992 case 0x10:
993 case 0xb0:
994 case 0x30:
995 case 0xa0:
996 case 0x20:
997 case 0x90:
998 /* Not safe if the high bit is on as relaxing may
999 move the value out of high mem and thus not fit
1000 in a signed 16bit value. */
1001 if (((code & 0xfc) == 0x78
1002 || (code & 0xfc) == 0x60
1003 || (code & 0xfc) == 0x64
1004 || (code & 0xfc) == 0x68
1005 || (code & 0xfc) == 0x6c
1006 || (code & 0xfc) == 0x80
1007 || (code & 0xfc) == 0xf0
1008 || (code & 0xfc) == 0x00
1009 || (code & 0xfc) == 0x10
1010 || (code & 0xfc) == 0xb0
1011 || (code & 0xfc) == 0x30
1012 || (code & 0xfc) == 0xa0
1013 || (code & 0xfc) == 0x20
1014 || (code & 0xfc) == 0x90)
1015 && (value & 0x8000) != 0)
1016 continue;
1017
1018 /* Note that we've changed the relocation contents, etc. */
1019 elf_section_data (sec)->relocs = internal_relocs;
1020 elf_section_data (sec)->this_hdr.contents = contents;
1021 symtab_hdr->contents = (unsigned char *) isymbuf;
1022
1023 /* Fix the opcode. */
1024 bfd_put_8 (abfd, 0xf7, contents + irel->r_offset - 2);
1025
1026 if ((code & 0xfc) == 0x78)
1027 code = 0x48 + (code & 0x03);
1028 else if ((code & 0xfc) == 0xd0)
1029 code = 0x30 + (code & 0x03);
1030 else if ((code & 0xfc) == 0x50)
1031 code = 0x20 + (code & 0x03);
1032 else if ((code & 0xfc) == 0x60)
1033 code = 0x18 + (code & 0x03);
1034 else if ((code & 0xfc) == 0x64)
1035 code = 0x08 + (code & 0x03);
1036 else if ((code & 0xfc) == 0x68)
1037 code = 0x1c + (code & 0x03);
1038 else if ((code & 0xfc) == 0x6c)
1039 code = 0x0c + (code & 0x03);
1040 else if ((code & 0xfc) == 0x80)
1041 code = 0xc0 + (code & 0x07);
1042 else if ((code & 0xfc) == 0xf0)
1043 code = 0xb0 + (code & 0x07);
1044 else if ((code & 0xfc) == 0x00)
1045 code = 0x80 + (code & 0x07);
1046 else if ((code & 0xfc) == 0x10)
1047 code = 0xa0 + (code & 0x07);
1048 else if ((code & 0xfc) == 0xb0)
1049 code = 0x70 + (code & 0x07);
1050 else if ((code & 0xfc) == 0x30)
1051 code = 0x60 + (code & 0x07);
1052 else if ((code & 0xfc) == 0xa0)
1053 code = 0xd0 + (code & 0x07);
1054 else if ((code & 0xfc) == 0x20)
1055 code = 0x90 + (code & 0x07);
1056 else if ((code & 0xfc) == 0x90)
1057 code = 0x50 + (code & 0x07);
1058
1059 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
1060
1061 /* Fix the relocation's type. */
1062 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1063 R_MN10200_16);
1064
1065 /* Delete one bytes of data. */
1066 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
1067 irel->r_offset + 2, 1))
1068 goto error_return;
1069
1070 /* That will change things, so, we should relax again.
1071 Note that this is not required, and it may be slow. */
1072 *again = TRUE;
1073 break;
1074
1075 /* movb (abs24),dn ->movbu (abs16),dn extxb bn */
1076 case 0xc4:
1077 /* Note that we've changed the reldection contents, etc. */
1078 elf_section_data (sec)->relocs = internal_relocs;
1079 elf_section_data (sec)->this_hdr.contents = contents;
1080 symtab_hdr->contents = (unsigned char *) isymbuf;
1081
1082 bfd_put_8 (abfd, 0xcc + (code & 0x03),
1083 contents + irel->r_offset - 2);
1084
1085 bfd_put_8 (abfd, 0xb8 + (code & 0x03),
1086 contents + irel->r_offset - 1);
1087
1088 /* Fix the relocation's type. */
1089 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1090 R_MN10200_16);
1091
1092 /* The reloc will be applied one byte in front of its
1093 current location. */
1094 irel->r_offset -= 1;
1095
1096 /* Delete one bytes of data. */
1097 if (!mn10200_elf_relax_delete_bytes (abfd, sec,
1098 irel->r_offset + 2, 1))
1099 goto error_return;
1100
1101 /* That will change things, so, we should relax again.
1102 Note that this is not required, and it may be slow. */
1103 *again = TRUE;
1104 break;
1105 }
1106 }
1107 }
1108 }
1109
1110 if (isymbuf != NULL
1111 && symtab_hdr->contents != (unsigned char *) isymbuf)
1112 {
1113 if (! link_info->keep_memory)
1114 free (isymbuf);
1115 else
1116 {
1117 /* Cache the symbols for elf_link_input_bfd. */
1118 symtab_hdr->contents = (unsigned char *) isymbuf;
1119 }
1120 }
1121
1122 if (contents != NULL
1123 && elf_section_data (sec)->this_hdr.contents != contents)
1124 {
1125 if (! link_info->keep_memory)
1126 free (contents);
1127 else
1128 {
1129 /* Cache the section contents for elf_link_input_bfd. */
1130 elf_section_data (sec)->this_hdr.contents = contents;
1131 }
1132 }
1133
1134 if (internal_relocs != NULL
1135 && elf_section_data (sec)->relocs != internal_relocs)
1136 free (internal_relocs);
1137
1138 return TRUE;
1139
1140 error_return:
1141 if (isymbuf != NULL
1142 && symtab_hdr->contents != (unsigned char *) isymbuf)
1143 free (isymbuf);
1144 if (contents != NULL
1145 && elf_section_data (sec)->this_hdr.contents != contents)
1146 free (contents);
1147 if (internal_relocs != NULL
1148 && elf_section_data (sec)->relocs != internal_relocs)
1149 free (internal_relocs);
1150
1151 return FALSE;
1152 }
1153
1154 /* Delete some bytes from a section while relaxing. */
1155
1156 static bfd_boolean
1157 mn10200_elf_relax_delete_bytes (abfd, sec, addr, count)
1158 bfd *abfd;
1159 asection *sec;
1160 bfd_vma addr;
1161 int count;
1162 {
1163 Elf_Internal_Shdr *symtab_hdr;
1164 unsigned int sec_shndx;
1165 bfd_byte *contents;
1166 Elf_Internal_Rela *irel, *irelend;
1167 Elf_Internal_Rela *irelalign;
1168 bfd_vma toaddr;
1169 Elf_Internal_Sym *isym;
1170 Elf_Internal_Sym *isymend;
1171 struct elf_link_hash_entry **sym_hashes;
1172 struct elf_link_hash_entry **end_hashes;
1173 unsigned int symcount;
1174
1175 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1176
1177 contents = elf_section_data (sec)->this_hdr.contents;
1178
1179 /* The deletion must stop at the next ALIGN reloc for an aligment
1180 power larger than the number of bytes we are deleting. */
1181
1182 irelalign = NULL;
1183 toaddr = sec->size;
1184
1185 irel = elf_section_data (sec)->relocs;
1186 irelend = irel + sec->reloc_count;
1187
1188 /* Actually delete the bytes. */
1189 memmove (contents + addr, contents + addr + count,
1190 (size_t) (toaddr - addr - count));
1191 sec->size -= count;
1192
1193 /* Adjust all the relocs. */
1194 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1195 {
1196 /* Get the new reloc address. */
1197 if ((irel->r_offset > addr
1198 && irel->r_offset < toaddr))
1199 irel->r_offset -= count;
1200 }
1201
1202 /* Adjust the local symbols defined in this section. */
1203 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1204 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1205 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1206 {
1207 if (isym->st_shndx == sec_shndx
1208 && isym->st_value > addr
1209 && isym->st_value < toaddr)
1210 isym->st_value -= count;
1211 }
1212
1213 /* Now adjust the global symbols defined in this section. */
1214 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1215 - symtab_hdr->sh_info);
1216 sym_hashes = elf_sym_hashes (abfd);
1217 end_hashes = sym_hashes + symcount;
1218 for (; sym_hashes < end_hashes; sym_hashes++)
1219 {
1220 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1221 if ((sym_hash->root.type == bfd_link_hash_defined
1222 || sym_hash->root.type == bfd_link_hash_defweak)
1223 && sym_hash->root.u.def.section == sec
1224 && sym_hash->root.u.def.value > addr
1225 && sym_hash->root.u.def.value < toaddr)
1226 {
1227 sym_hash->root.u.def.value -= count;
1228 }
1229 }
1230
1231 return TRUE;
1232 }
1233
1234 /* Return TRUE if a symbol exists at the given address, else return
1235 FALSE. */
1236 static bfd_boolean
1237 mn10200_elf_symbol_address_p (abfd, sec, isym, addr)
1238 bfd *abfd;
1239 asection *sec;
1240 Elf_Internal_Sym *isym;
1241 bfd_vma addr;
1242 {
1243 Elf_Internal_Shdr *symtab_hdr;
1244 unsigned int sec_shndx;
1245 Elf_Internal_Sym *isymend;
1246 struct elf_link_hash_entry **sym_hashes;
1247 struct elf_link_hash_entry **end_hashes;
1248 unsigned int symcount;
1249
1250 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1251
1252 /* Examine all the local symbols. */
1253 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1254 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1255 {
1256 if (isym->st_shndx == sec_shndx
1257 && isym->st_value == addr)
1258 return TRUE;
1259 }
1260
1261 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1262 - symtab_hdr->sh_info);
1263 sym_hashes = elf_sym_hashes (abfd);
1264 end_hashes = sym_hashes + symcount;
1265 for (; sym_hashes < end_hashes; sym_hashes++)
1266 {
1267 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1268 if ((sym_hash->root.type == bfd_link_hash_defined
1269 || sym_hash->root.type == bfd_link_hash_defweak)
1270 && sym_hash->root.u.def.section == sec
1271 && sym_hash->root.u.def.value == addr)
1272 return TRUE;
1273 }
1274
1275 return FALSE;
1276 }
1277
1278 /* This is a version of bfd_generic_get_relocated_section_contents
1279 which uses mn10200_elf_relocate_section. */
1280
1281 static bfd_byte *
1282 mn10200_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
1283 data, relocatable, symbols)
1284 bfd *output_bfd;
1285 struct bfd_link_info *link_info;
1286 struct bfd_link_order *link_order;
1287 bfd_byte *data;
1288 bfd_boolean relocatable;
1289 asymbol **symbols;
1290 {
1291 Elf_Internal_Shdr *symtab_hdr;
1292 asection *input_section = link_order->u.indirect.section;
1293 bfd *input_bfd = input_section->owner;
1294 asection **sections = NULL;
1295 Elf_Internal_Rela *internal_relocs = NULL;
1296 Elf_Internal_Sym *isymbuf = NULL;
1297
1298 /* We only need to handle the case of relaxing, or of having a
1299 particular set of section contents, specially. */
1300 if (relocatable
1301 || elf_section_data (input_section)->this_hdr.contents == NULL)
1302 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
1303 link_order, data,
1304 relocatable,
1305 symbols);
1306
1307 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1308
1309 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
1310 (size_t) input_section->size);
1311
1312 if ((input_section->flags & SEC_RELOC) != 0
1313 && input_section->reloc_count > 0)
1314 {
1315 Elf_Internal_Sym *isym;
1316 Elf_Internal_Sym *isymend;
1317 asection **secpp;
1318 bfd_size_type amt;
1319
1320 internal_relocs = (_bfd_elf_link_read_relocs
1321 (input_bfd, input_section, (PTR) NULL,
1322 (Elf_Internal_Rela *) NULL, FALSE));
1323 if (internal_relocs == NULL)
1324 goto error_return;
1325
1326 if (symtab_hdr->sh_info != 0)
1327 {
1328 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1329 if (isymbuf == NULL)
1330 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1331 symtab_hdr->sh_info, 0,
1332 NULL, NULL, NULL);
1333 if (isymbuf == NULL)
1334 goto error_return;
1335 }
1336
1337 amt = symtab_hdr->sh_info;
1338 amt *= sizeof (asection *);
1339 sections = (asection **) bfd_malloc (amt);
1340 if (sections == NULL && amt != 0)
1341 goto error_return;
1342
1343 isymend = isymbuf + symtab_hdr->sh_info;
1344 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
1345 {
1346 asection *isec;
1347
1348 if (isym->st_shndx == SHN_UNDEF)
1349 isec = bfd_und_section_ptr;
1350 else if (isym->st_shndx == SHN_ABS)
1351 isec = bfd_abs_section_ptr;
1352 else if (isym->st_shndx == SHN_COMMON)
1353 isec = bfd_com_section_ptr;
1354 else
1355 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
1356
1357 *secpp = isec;
1358 }
1359
1360 if (! mn10200_elf_relocate_section (output_bfd, link_info, input_bfd,
1361 input_section, data, internal_relocs,
1362 isymbuf, sections))
1363 goto error_return;
1364
1365 if (sections != NULL)
1366 free (sections);
1367 if (isymbuf != NULL
1368 && symtab_hdr->contents != (unsigned char *) isymbuf)
1369 free (isymbuf);
1370 if (elf_section_data (input_section)->relocs != internal_relocs)
1371 free (internal_relocs);
1372 }
1373
1374 return data;
1375
1376 error_return:
1377 if (sections != NULL)
1378 free (sections);
1379 if (isymbuf != NULL
1380 && symtab_hdr->contents != (unsigned char *) isymbuf)
1381 free (isymbuf);
1382 if (internal_relocs != NULL
1383 && elf_section_data (input_section)->relocs != internal_relocs)
1384 free (internal_relocs);
1385 return NULL;
1386 }
1387
1388 #define TARGET_LITTLE_SYM bfd_elf32_mn10200_vec
1389 #define TARGET_LITTLE_NAME "elf32-mn10200"
1390 #define ELF_ARCH bfd_arch_mn10200
1391 #define ELF_MACHINE_CODE EM_MN10200
1392 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10200
1393 #define ELF_MAXPAGESIZE 0x1000
1394
1395 #define elf_backend_rela_normal 1
1396 #define elf_info_to_howto mn10200_info_to_howto
1397 #define elf_info_to_howto_rel 0
1398 #define elf_backend_relocate_section mn10200_elf_relocate_section
1399 #define bfd_elf32_bfd_relax_section mn10200_elf_relax_section
1400 #define bfd_elf32_bfd_get_relocated_section_contents \
1401 mn10200_elf_get_relocated_section_contents
1402
1403 #define elf_symbol_leading_char '_'
1404
1405 #include "elf32-target.h"
git-cvsimport of binutils cvsroot