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49f58d10 JB |
1 | /* M16C/M32C specific support for 32-bit ELF. |
2 | Copyright (C) 2005 | |
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/m32c.h" | |
26 | #include "libiberty.h" | |
27 | ||
28 | /* Forward declarations. */ | |
29 | static reloc_howto_type * m32c_reloc_type_lookup | |
30 | (bfd *, bfd_reloc_code_real_type); | |
31 | static void m32c_info_to_howto_rela | |
32 | (bfd *, arelent *, Elf_Internal_Rela *); | |
33 | static bfd_boolean m32c_elf_relocate_section | |
34 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); | |
35 | static bfd_boolean m32c_elf_gc_sweep_hook | |
36 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
37 | static asection * m32c_elf_gc_mark_hook | |
38 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
39 | static bfd_boolean m32c_elf_check_relocs | |
40 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
41 | static bfd_boolean m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int); | |
42 | #ifdef DEBUG | |
43 | static char * m32c_get_reloc (long reloc); | |
44 | #endif | |
45 | static bfd_boolean m32c_elf_relax_section | |
46 | (bfd *abfd, asection *sec, struct bfd_link_info *link_info, bfd_boolean *again); | |
47 | ||
48 | ||
49 | static reloc_howto_type m32c_elf_howto_table [] = | |
50 | { | |
51 | /* This reloc does nothing. */ | |
52 | HOWTO (R_M32C_NONE, /* type */ | |
53 | 0, /* rightshift */ | |
54 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
55 | 32, /* bitsize */ | |
56 | FALSE, /* pc_relative */ | |
57 | 0, /* bitpos */ | |
58 | complain_overflow_bitfield, /* complain_on_overflow */ | |
59 | bfd_elf_generic_reloc, /* special_function */ | |
60 | "R_M32C_NONE", /* name */ | |
61 | FALSE, /* partial_inplace */ | |
62 | 0, /* src_mask */ | |
63 | 0, /* dst_mask */ | |
64 | FALSE), /* pcrel_offset */ | |
65 | ||
66 | HOWTO (R_M32C_16, /* type */ | |
67 | 0, /* rightshift */ | |
68 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
69 | 16, /* bitsize */ | |
70 | FALSE, /* pc_relative */ | |
71 | 0, /* bitpos */ | |
72 | complain_overflow_bitfield, /* complain_on_overflow */ | |
73 | bfd_elf_generic_reloc, /* special_function */ | |
74 | "R_M32C_16", /* name */ | |
75 | FALSE, /* partial_inplace */ | |
76 | 0, /* src_mask */ | |
77 | 0x0000ffff, /* dst_mask */ | |
78 | FALSE), /* pcrel_offset */ | |
79 | ||
80 | HOWTO (R_M32C_24, /* type */ | |
81 | 0, /* rightshift */ | |
82 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
83 | 24, /* bitsize */ | |
84 | FALSE, /* pc_relative */ | |
85 | 0, /* bitpos */ | |
86 | complain_overflow_bitfield, /* complain_on_overflow */ | |
87 | bfd_elf_generic_reloc, /* special_function */ | |
88 | "R_M32C_24", /* name */ | |
89 | FALSE, /* partial_inplace */ | |
90 | 0, /* src_mask */ | |
91 | 0x00ffffff, /* dst_mask */ | |
92 | FALSE), /* pcrel_offset */ | |
93 | ||
94 | HOWTO (R_M32C_32, /* type */ | |
95 | 0, /* rightshift */ | |
96 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
97 | 32, /* bitsize */ | |
98 | FALSE, /* pc_relative */ | |
99 | 0, /* bitpos */ | |
100 | complain_overflow_bitfield, /* complain_on_overflow */ | |
101 | bfd_elf_generic_reloc, /* special_function */ | |
102 | "R_M32C_32", /* name */ | |
103 | FALSE, /* partial_inplace */ | |
104 | 0, /* src_mask */ | |
105 | 0xffffffff, /* dst_mask */ | |
106 | FALSE), /* pcrel_offset */ | |
107 | ||
108 | HOWTO (R_M32C_8_PCREL, /* type */ | |
109 | 0, /* rightshift */ | |
110 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
111 | 8, /* bitsize */ | |
112 | TRUE, /* pc_relative */ | |
113 | 0, /* bitpos */ | |
114 | complain_overflow_signed, /* complain_on_overflow */ | |
115 | bfd_elf_generic_reloc, /* special_function */ | |
116 | "R_M32C_8_PCREL", /* name */ | |
117 | FALSE, /* partial_inplace */ | |
118 | 0, /* src_mask */ | |
119 | 0x000000ff, /* dst_mask */ | |
120 | TRUE), /* pcrel_offset */ | |
121 | ||
122 | HOWTO (R_M32C_16_PCREL, /* type */ | |
123 | 0, /* rightshift */ | |
124 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
125 | 16, /* bitsize */ | |
126 | TRUE, /* pc_relative */ | |
127 | 0, /* bitpos */ | |
128 | complain_overflow_signed, /* complain_on_overflow */ | |
129 | bfd_elf_generic_reloc, /* special_function */ | |
130 | "R_M32C_16_PCREL", /* name */ | |
131 | FALSE, /* partial_inplace */ | |
132 | 0, /* src_mask */ | |
133 | 0, /* dst_mask */ | |
134 | TRUE), /* pcrel_offset */ | |
fd54057a DD |
135 | |
136 | HOWTO (R_M32C_8, /* type */ | |
137 | 0, /* rightshift */ | |
138 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
139 | 8, /* bitsize */ | |
140 | FALSE, /* pc_relative */ | |
141 | 0, /* bitpos */ | |
142 | complain_overflow_unsigned, /* complain_on_overflow */ | |
143 | bfd_elf_generic_reloc, /* special_function */ | |
144 | "R_M32C_8", /* name */ | |
145 | FALSE, /* partial_inplace */ | |
146 | 0, /* src_mask */ | |
147 | 0x000000ff, /* dst_mask */ | |
148 | FALSE), /* pcrel_offset */ | |
149 | ||
150 | HOWTO (R_M32C_LO16, /* type */ | |
151 | 0, /* rightshift */ | |
152 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
153 | 16, /* bitsize */ | |
154 | FALSE, /* pc_relative */ | |
155 | 0, /* bitpos */ | |
156 | complain_overflow_dont, /* complain_on_overflow */ | |
157 | bfd_elf_generic_reloc, /* special_function */ | |
158 | "R_M32C_LO16", /* name */ | |
159 | FALSE, /* partial_inplace */ | |
160 | 0, /* src_mask */ | |
161 | 0x0000ffff, /* dst_mask */ | |
162 | FALSE), /* pcrel_offset */ | |
163 | ||
164 | HOWTO (R_M32C_HI8, /* type */ | |
165 | 0, /* rightshift */ | |
166 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
167 | 8, /* bitsize */ | |
168 | FALSE, /* pc_relative */ | |
169 | 0, /* bitpos */ | |
170 | complain_overflow_dont, /* complain_on_overflow */ | |
171 | bfd_elf_generic_reloc, /* special_function */ | |
172 | "R_M32C_HI8", /* name */ | |
173 | FALSE, /* partial_inplace */ | |
174 | 0, /* src_mask */ | |
175 | 0x000000ff, /* dst_mask */ | |
176 | FALSE), /* pcrel_offset */ | |
177 | ||
178 | HOWTO (R_M32C_HI16, /* type */ | |
179 | 0, /* rightshift */ | |
180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
181 | 16, /* bitsize */ | |
182 | FALSE, /* pc_relative */ | |
183 | 0, /* bitpos */ | |
184 | complain_overflow_dont, /* complain_on_overflow */ | |
185 | bfd_elf_generic_reloc, /* special_function */ | |
186 | "R_M32C_HI16", /* name */ | |
187 | FALSE, /* partial_inplace */ | |
188 | 0, /* src_mask */ | |
189 | 0x0000ffff, /* dst_mask */ | |
190 | FALSE), /* pcrel_offset */ | |
49f58d10 JB |
191 | }; |
192 | \f | |
193 | /* Map BFD reloc types to M32C ELF reloc types. */ | |
194 | ||
195 | struct m32c_reloc_map | |
196 | { | |
197 | bfd_reloc_code_real_type bfd_reloc_val; | |
198 | unsigned int m32c_reloc_val; | |
199 | }; | |
200 | ||
201 | static const struct m32c_reloc_map m32c_reloc_map [] = | |
202 | { | |
203 | { BFD_RELOC_NONE, R_M32C_NONE }, | |
204 | { BFD_RELOC_16, R_M32C_16 }, | |
205 | { BFD_RELOC_24, R_M32C_24 }, | |
206 | { BFD_RELOC_32, R_M32C_32 }, | |
207 | { BFD_RELOC_8_PCREL, R_M32C_8_PCREL }, | |
fd54057a DD |
208 | { BFD_RELOC_16_PCREL, R_M32C_16_PCREL }, |
209 | { BFD_RELOC_8, R_M32C_8 }, | |
210 | { BFD_RELOC_LO16, R_M32C_LO16 }, | |
211 | { BFD_RELOC_HI16, R_M32C_HI16 }, | |
212 | { BFD_RELOC_M32C_HI8, R_M32C_HI8 } | |
49f58d10 JB |
213 | }; |
214 | ||
215 | static reloc_howto_type * | |
216 | m32c_reloc_type_lookup | |
217 | (bfd * abfd ATTRIBUTE_UNUSED, | |
218 | bfd_reloc_code_real_type code) | |
219 | { | |
220 | unsigned int i; | |
221 | ||
222 | for (i = ARRAY_SIZE (m32c_reloc_map); --i;) | |
223 | if (m32c_reloc_map [i].bfd_reloc_val == code) | |
224 | return & m32c_elf_howto_table [m32c_reloc_map[i].m32c_reloc_val]; | |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
229 | /* Set the howto pointer for an M32C ELF reloc. */ | |
230 | ||
231 | static void | |
232 | m32c_info_to_howto_rela | |
233 | (bfd * abfd ATTRIBUTE_UNUSED, | |
234 | arelent * cache_ptr, | |
235 | Elf_Internal_Rela * dst) | |
236 | { | |
237 | unsigned int r_type; | |
238 | ||
239 | r_type = ELF32_R_TYPE (dst->r_info); | |
240 | BFD_ASSERT (r_type < (unsigned int) R_M32C_max); | |
241 | cache_ptr->howto = & m32c_elf_howto_table [r_type]; | |
242 | } | |
243 | ||
244 | \f | |
245 | ||
246 | /* Relocate an M32C ELF section. | |
247 | There is some attempt to make this function usable for many architectures, | |
248 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
249 | if only to serve as a learning tool. | |
250 | ||
251 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
252 | to handle the relocations for a section. | |
253 | ||
254 | The relocs are always passed as Rela structures; if the section | |
255 | actually uses Rel structures, the r_addend field will always be | |
256 | zero. | |
257 | ||
258 | This function is responsible for adjusting the section contents as | |
259 | necessary, and (if using Rela relocs and generating a relocatable | |
260 | output file) adjusting the reloc addend as necessary. | |
261 | ||
262 | This function does not have to worry about setting the reloc | |
263 | address or the reloc symbol index. | |
264 | ||
265 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
266 | ||
267 | LOCAL_SECTIONS is an array giving the section in the input file | |
268 | corresponding to the st_shndx field of each local symbol. | |
269 | ||
270 | The global hash table entry for the global symbols can be found | |
271 | via elf_sym_hashes (input_bfd). | |
272 | ||
273 | When generating relocatable output, this function must handle | |
274 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
275 | going to be the section symbol corresponding to the output | |
276 | section, which means that the addend must be adjusted | |
277 | accordingly. */ | |
278 | ||
279 | static bfd_boolean | |
280 | m32c_elf_relocate_section | |
281 | (bfd * output_bfd ATTRIBUTE_UNUSED, | |
282 | struct bfd_link_info * info, | |
283 | bfd * input_bfd, | |
284 | asection * input_section, | |
285 | bfd_byte * contents, | |
286 | Elf_Internal_Rela * relocs, | |
287 | Elf_Internal_Sym * local_syms, | |
288 | asection ** local_sections) | |
289 | { | |
290 | Elf_Internal_Shdr * symtab_hdr; | |
291 | struct elf_link_hash_entry ** sym_hashes; | |
292 | Elf_Internal_Rela * rel; | |
293 | Elf_Internal_Rela * relend; | |
294 | bfd *dynobj; | |
295 | asection *splt; | |
296 | ||
297 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
298 | sym_hashes = elf_sym_hashes (input_bfd); | |
299 | relend = relocs + input_section->reloc_count; | |
300 | ||
301 | dynobj = elf_hash_table (info)->dynobj; | |
302 | splt = NULL; | |
303 | if (dynobj != NULL) | |
304 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
305 | ||
306 | for (rel = relocs; rel < relend; rel ++) | |
307 | { | |
308 | reloc_howto_type * howto; | |
309 | unsigned long r_symndx; | |
310 | Elf_Internal_Sym * sym; | |
311 | asection * sec; | |
312 | struct elf_link_hash_entry * h; | |
313 | bfd_vma relocation; | |
314 | bfd_reloc_status_type r; | |
315 | const char * name = NULL; | |
316 | int r_type; | |
317 | ||
318 | r_type = ELF32_R_TYPE (rel->r_info); | |
319 | ||
320 | r_symndx = ELF32_R_SYM (rel->r_info); | |
321 | ||
322 | if (info->relocatable) | |
323 | { | |
324 | /* This is a relocatable link. We don't have to change | |
325 | anything, unless the reloc is against a section symbol, | |
326 | in which case we have to adjust according to where the | |
327 | section symbol winds up in the output section. */ | |
328 | if (r_symndx < symtab_hdr->sh_info) | |
329 | { | |
330 | sym = local_syms + r_symndx; | |
331 | ||
332 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
333 | { | |
334 | sec = local_sections [r_symndx]; | |
335 | rel->r_addend += sec->output_offset + sym->st_value; | |
336 | } | |
337 | } | |
338 | ||
339 | continue; | |
340 | } | |
341 | ||
342 | /* This is a final link. */ | |
343 | howto = m32c_elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
344 | h = NULL; | |
345 | sym = NULL; | |
346 | sec = NULL; | |
347 | ||
348 | if (r_symndx < symtab_hdr->sh_info) | |
349 | { | |
350 | sym = local_syms + r_symndx; | |
351 | sec = local_sections [r_symndx]; | |
352 | relocation = (sec->output_section->vma | |
353 | + sec->output_offset | |
354 | + sym->st_value); | |
355 | ||
356 | name = bfd_elf_string_from_elf_section | |
357 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
358 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
359 | } | |
360 | else | |
361 | { | |
362 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
363 | ||
364 | while (h->root.type == bfd_link_hash_indirect | |
365 | || h->root.type == bfd_link_hash_warning) | |
366 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
367 | ||
368 | name = h->root.root.string; | |
369 | ||
370 | if (h->root.type == bfd_link_hash_defined | |
371 | || h->root.type == bfd_link_hash_defweak) | |
372 | { | |
373 | sec = h->root.u.def.section; | |
374 | relocation = (h->root.u.def.value | |
375 | + sec->output_section->vma | |
376 | + sec->output_offset); | |
377 | } | |
378 | else if (h->root.type == bfd_link_hash_undefweak) | |
379 | { | |
380 | relocation = 0; | |
381 | } | |
382 | else | |
383 | { | |
384 | if (! ((*info->callbacks->undefined_symbol) | |
385 | (info, h->root.root.string, input_bfd, | |
386 | input_section, rel->r_offset, TRUE))) | |
387 | return FALSE; | |
388 | relocation = 0; | |
389 | } | |
390 | } | |
391 | ||
392 | switch (ELF32_R_TYPE (rel->r_info)) | |
393 | { | |
394 | case R_M32C_16: | |
395 | { | |
396 | bfd_vma *plt_offset; | |
397 | ||
398 | if (h != NULL) | |
399 | plt_offset = &h->plt.offset; | |
400 | else | |
401 | plt_offset = elf_local_got_offsets (input_bfd) + r_symndx; | |
402 | ||
403 | /* printf("%s: rel %x plt %d\n", h ? h->root.root.string : "(none)", | |
404 | relocation, *plt_offset);*/ | |
405 | if (relocation <= 0xffff) | |
406 | { | |
407 | /* If the symbol is in range for a 16-bit address, we should | |
408 | have deallocated the plt entry in relax_section. */ | |
409 | BFD_ASSERT (*plt_offset == (bfd_vma) -1); | |
410 | } | |
411 | else | |
412 | { | |
413 | /* If the symbol is out of range for a 16-bit address, | |
414 | we must have allocated a plt entry. */ | |
415 | BFD_ASSERT (*plt_offset != (bfd_vma) -1); | |
416 | ||
417 | /* If this is the first time we've processed this symbol, | |
418 | fill in the plt entry with the correct symbol address. */ | |
419 | if ((*plt_offset & 1) == 0) | |
420 | { | |
421 | unsigned int x; | |
422 | ||
423 | x = 0x000000fc; /* jmpf */ | |
424 | x |= (relocation << 8) & 0xffffff00; | |
425 | bfd_put_32 (input_bfd, x, splt->contents + *plt_offset); | |
426 | *plt_offset |= 1; | |
427 | } | |
428 | ||
429 | relocation = (splt->output_section->vma | |
430 | + splt->output_offset | |
431 | + (*plt_offset & -2)); | |
432 | } | |
433 | } | |
434 | break; | |
fd54057a DD |
435 | |
436 | case R_M32C_HI8: | |
437 | case R_M32C_HI16: | |
438 | relocation >>= 16; | |
439 | break; | |
49f58d10 JB |
440 | } |
441 | ||
442 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
443 | contents, rel->r_offset, relocation, | |
444 | rel->r_addend); | |
445 | ||
446 | if (r != bfd_reloc_ok) | |
447 | { | |
448 | const char * msg = (const char *) NULL; | |
449 | ||
450 | switch (r) | |
451 | { | |
452 | case bfd_reloc_overflow: | |
453 | r = info->callbacks->reloc_overflow | |
454 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
455 | input_bfd, input_section, rel->r_offset); | |
456 | break; | |
457 | ||
458 | case bfd_reloc_undefined: | |
459 | r = info->callbacks->undefined_symbol | |
460 | (info, name, input_bfd, input_section, rel->r_offset, | |
461 | TRUE); | |
462 | break; | |
463 | ||
464 | case bfd_reloc_outofrange: | |
465 | msg = _("internal error: out of range error"); | |
466 | break; | |
467 | ||
468 | case bfd_reloc_notsupported: | |
469 | msg = _("internal error: unsupported relocation error"); | |
470 | break; | |
471 | ||
472 | case bfd_reloc_dangerous: | |
473 | msg = _("internal error: dangerous relocation"); | |
474 | break; | |
475 | ||
476 | default: | |
477 | msg = _("internal error: unknown error"); | |
478 | break; | |
479 | } | |
480 | ||
481 | if (msg) | |
482 | r = info->callbacks->warning | |
483 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
484 | ||
485 | if (! r) | |
486 | return FALSE; | |
487 | } | |
488 | } | |
489 | ||
490 | return TRUE; | |
491 | } | |
492 | \f | |
493 | /* Return the section that should be marked against GC for a given | |
494 | relocation. */ | |
495 | ||
496 | static asection * | |
497 | m32c_elf_gc_mark_hook | |
498 | (asection * sec, | |
499 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
500 | Elf_Internal_Rela * rel, | |
501 | struct elf_link_hash_entry * h, | |
502 | Elf_Internal_Sym * sym) | |
503 | { | |
504 | if (h != NULL) | |
505 | { | |
506 | switch (ELF32_R_TYPE (rel->r_info)) | |
507 | { | |
508 | default: | |
509 | switch (h->root.type) | |
510 | { | |
511 | case bfd_link_hash_defined: | |
512 | case bfd_link_hash_defweak: | |
513 | return h->root.u.def.section; | |
514 | ||
515 | case bfd_link_hash_common: | |
516 | return h->root.u.c.p->section; | |
517 | ||
518 | default: | |
519 | break; | |
520 | } | |
521 | } | |
522 | } | |
523 | else | |
524 | { | |
525 | if (!(elf_bad_symtab (sec->owner) | |
526 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
527 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
528 | && sym->st_shndx != SHN_COMMON)) | |
529 | { | |
530 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
531 | } | |
532 | } | |
533 | ||
534 | return NULL; | |
535 | } | |
536 | ||
537 | /* Update the got entry reference counts for the section being removed. */ | |
538 | ||
539 | static bfd_boolean | |
540 | m32c_elf_gc_sweep_hook | |
541 | (bfd * abfd ATTRIBUTE_UNUSED, | |
542 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
543 | asection * sec ATTRIBUTE_UNUSED, | |
544 | const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED) | |
545 | { | |
546 | return TRUE; | |
547 | } | |
548 | ||
549 | /* We support 16-bit pointers to code above 64k by generating a thunk | |
550 | below 64k containing a JMP instruction to the final address. */ | |
551 | ||
552 | static bfd_boolean | |
553 | m32c_elf_check_relocs | |
554 | (bfd * abfd, | |
555 | struct bfd_link_info * info, | |
556 | asection * sec, | |
557 | const Elf_Internal_Rela * relocs) | |
558 | { | |
559 | Elf_Internal_Shdr * symtab_hdr; | |
560 | struct elf_link_hash_entry ** sym_hashes; | |
561 | struct elf_link_hash_entry ** sym_hashes_end; | |
562 | const Elf_Internal_Rela * rel; | |
563 | const Elf_Internal_Rela * rel_end; | |
564 | bfd_vma *local_plt_offsets; | |
565 | asection *splt; | |
566 | bfd *dynobj; | |
567 | ||
568 | if (info->relocatable) | |
569 | return TRUE; | |
570 | ||
571 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
572 | sym_hashes = elf_sym_hashes (abfd); | |
573 | local_plt_offsets = elf_local_got_offsets (abfd); | |
574 | splt = NULL; | |
575 | dynobj = elf_hash_table(info)->dynobj; | |
576 | ||
577 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); | |
578 | if (!elf_bad_symtab (abfd)) | |
579 | sym_hashes_end -= symtab_hdr->sh_info; | |
580 | ||
581 | rel_end = relocs + sec->reloc_count; | |
582 | for (rel = relocs; rel < rel_end; rel++) | |
583 | { | |
584 | struct elf_link_hash_entry *h; | |
585 | unsigned long r_symndx; | |
586 | bfd_vma *offset; | |
587 | ||
588 | r_symndx = ELF32_R_SYM (rel->r_info); | |
589 | if (r_symndx < symtab_hdr->sh_info) | |
590 | h = NULL; | |
591 | else | |
592 | { | |
593 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
594 | while (h->root.type == bfd_link_hash_indirect | |
595 | || h->root.type == bfd_link_hash_warning) | |
596 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
597 | } | |
598 | ||
599 | switch (ELF32_R_TYPE (rel->r_info)) | |
600 | { | |
601 | /* This relocation describes a 16-bit pointer to a function. | |
602 | We may need to allocate a thunk in low memory; reserve memory | |
603 | for it now. */ | |
604 | case R_M32C_16: | |
605 | if (dynobj == NULL) | |
606 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
607 | if (splt == NULL) | |
608 | { | |
609 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
610 | if (splt == NULL) | |
611 | { | |
612 | splt = bfd_make_section (dynobj, ".plt"); | |
613 | if (splt == NULL | |
614 | || ! bfd_set_section_flags (dynobj, splt, | |
615 | (SEC_ALLOC | |
616 | | SEC_LOAD | |
617 | | SEC_HAS_CONTENTS | |
618 | | SEC_IN_MEMORY | |
619 | | SEC_LINKER_CREATED | |
620 | | SEC_READONLY | |
621 | | SEC_CODE)) | |
622 | || ! bfd_set_section_alignment (dynobj, splt, 1)) | |
623 | return FALSE; | |
624 | } | |
625 | } | |
626 | ||
627 | if (h != NULL) | |
628 | offset = &h->plt.offset; | |
629 | else | |
630 | { | |
631 | if (local_plt_offsets == NULL) | |
632 | { | |
633 | size_t size; | |
634 | unsigned int i; | |
635 | ||
636 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
637 | local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
638 | if (local_plt_offsets == NULL) | |
639 | return FALSE; | |
640 | elf_local_got_offsets (abfd) = local_plt_offsets; | |
641 | ||
642 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
643 | local_plt_offsets[i] = (bfd_vma) -1; | |
644 | } | |
645 | offset = &local_plt_offsets[r_symndx]; | |
646 | } | |
647 | ||
648 | if (*offset == (bfd_vma) -1) | |
649 | { | |
650 | *offset = splt->size; | |
651 | splt->size += 4; | |
652 | } | |
653 | break; | |
654 | } | |
655 | } | |
656 | ||
657 | return TRUE; | |
658 | } | |
659 | ||
660 | /* This must exist if dynobj is ever set. */ | |
661 | ||
662 | static bfd_boolean | |
663 | m32c_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
664 | struct bfd_link_info *info) | |
665 | { | |
666 | bfd *dynobj; | |
667 | asection *splt; | |
668 | ||
669 | /* As an extra sanity check, verify that all plt entries have | |
670 | been filled in. */ | |
671 | ||
672 | if ((dynobj = elf_hash_table (info)->dynobj) != NULL | |
673 | && (splt = bfd_get_section_by_name (dynobj, ".plt")) != NULL) | |
674 | { | |
675 | bfd_byte *contents = splt->contents; | |
676 | unsigned int i, size = splt->size; | |
677 | for (i = 0; i < size; i += 4) | |
678 | { | |
679 | unsigned int x = bfd_get_32 (dynobj, contents + i); | |
680 | BFD_ASSERT (x != 0); | |
681 | } | |
682 | } | |
683 | ||
684 | return TRUE; | |
685 | } | |
686 | ||
687 | static bfd_boolean | |
688 | m32c_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
689 | struct bfd_link_info *info) | |
690 | { | |
691 | bfd *dynobj; | |
692 | asection *splt; | |
693 | ||
694 | if (info->relocatable) | |
695 | return TRUE; | |
696 | ||
697 | dynobj = elf_hash_table (info)->dynobj; | |
698 | if (dynobj == NULL) | |
699 | return TRUE; | |
700 | ||
701 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
702 | BFD_ASSERT (splt != NULL); | |
703 | ||
704 | splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size); | |
705 | if (splt->contents == NULL) | |
706 | return FALSE; | |
707 | ||
708 | return TRUE; | |
709 | } | |
710 | \f | |
711 | /* Function to set the ELF flag bits. */ | |
712 | ||
713 | static bfd_boolean | |
714 | m32c_elf_set_private_flags (bfd *abfd, flagword flags) | |
715 | { | |
716 | elf_elfheader (abfd)->e_flags = flags; | |
717 | elf_flags_init (abfd) = TRUE; | |
718 | return TRUE; | |
719 | } | |
720 | ||
721 | /* Merge backend specific data from an object file to the output | |
722 | object file when linking. */ | |
723 | ||
724 | static bfd_boolean | |
725 | m32c_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
726 | { | |
727 | flagword old_flags, old_partial; | |
728 | flagword new_flags, new_partial; | |
729 | bfd_boolean error = FALSE; | |
730 | char new_opt[80]; | |
731 | char old_opt[80]; | |
732 | ||
733 | new_opt[0] = old_opt[0] = '\0'; | |
734 | new_flags = elf_elfheader (ibfd)->e_flags; | |
735 | old_flags = elf_elfheader (obfd)->e_flags; | |
736 | ||
737 | #ifdef DEBUG | |
738 | (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", | |
739 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", | |
740 | bfd_get_filename (ibfd)); | |
741 | #endif | |
742 | ||
743 | if (!elf_flags_init (obfd)) | |
744 | { | |
745 | /* First call, no flags set. */ | |
746 | elf_flags_init (obfd) = TRUE; | |
747 | elf_elfheader (obfd)->e_flags = new_flags; | |
748 | } | |
749 | ||
750 | else if (new_flags == old_flags) | |
751 | /* Compatible flags are ok. */ | |
752 | ; | |
753 | ||
754 | else /* Possibly incompatible flags. */ | |
755 | { | |
756 | /* Warn if different cpu is used (allow a specific cpu to override | |
757 | the generic cpu). */ | |
758 | new_partial = (new_flags & EF_M32C_CPU_MASK); | |
759 | old_partial = (old_flags & EF_M32C_CPU_MASK); | |
760 | if (new_partial == old_partial) | |
761 | ; | |
762 | ||
763 | else | |
764 | { | |
765 | switch (new_partial) | |
766 | { | |
767 | default: strcat (new_opt, " -m16c"); break; | |
768 | case EF_M32C_CPU_M16C: strcat (new_opt, " -m16c"); break; | |
769 | case EF_M32C_CPU_M32C: strcat (new_opt, " -m32c"); break; | |
770 | } | |
771 | ||
772 | switch (old_partial) | |
773 | { | |
774 | default: strcat (old_opt, " -m16c"); break; | |
775 | case EF_M32C_CPU_M16C: strcat (old_opt, " -m16c"); break; | |
776 | case EF_M32C_CPU_M32C: strcat (old_opt, " -m32c"); break; | |
777 | } | |
778 | } | |
779 | ||
780 | /* Print out any mismatches from above. */ | |
781 | if (new_opt[0]) | |
782 | { | |
783 | error = TRUE; | |
784 | (*_bfd_error_handler) | |
785 | (_("%s: compiled with %s and linked with modules compiled with %s"), | |
786 | bfd_get_filename (ibfd), new_opt, old_opt); | |
787 | } | |
788 | ||
789 | new_flags &= ~ EF_M32C_ALL_FLAGS; | |
790 | old_flags &= ~ EF_M32C_ALL_FLAGS; | |
791 | ||
792 | /* Warn about any other mismatches. */ | |
793 | if (new_flags != old_flags) | |
794 | { | |
795 | error = TRUE; | |
796 | (*_bfd_error_handler) | |
797 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
798 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); | |
799 | } | |
800 | } | |
801 | ||
802 | if (error) | |
803 | bfd_set_error (bfd_error_bad_value); | |
804 | ||
805 | return !error; | |
806 | } | |
807 | ||
808 | \f | |
809 | static bfd_boolean | |
810 | m32c_elf_print_private_bfd_data (bfd *abfd, PTR ptr) | |
811 | { | |
812 | FILE *file = (FILE *) ptr; | |
813 | flagword flags; | |
814 | ||
815 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
816 | ||
817 | /* Print normal ELF private data. */ | |
818 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
819 | ||
820 | flags = elf_elfheader (abfd)->e_flags; | |
821 | fprintf (file, _("private flags = 0x%lx:"), (long)flags); | |
822 | ||
823 | switch (flags & EF_M32C_CPU_MASK) | |
824 | { | |
825 | default: break; | |
826 | case EF_M32C_CPU_M16C: fprintf (file, " -m16c"); break; | |
827 | case EF_M32C_CPU_M32C: fprintf (file, " -m32c"); break; | |
828 | } | |
829 | ||
830 | fputc ('\n', file); | |
831 | return TRUE; | |
832 | } | |
833 | ||
834 | /* Return the MACH for an e_flags value. */ | |
835 | ||
836 | static int | |
837 | elf32_m32c_machine (bfd *abfd) | |
838 | { | |
839 | switch (elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK) | |
840 | { | |
841 | case EF_M32C_CPU_M16C: return bfd_mach_m16c; | |
842 | case EF_M32C_CPU_M32C: return bfd_mach_m32c; | |
843 | } | |
844 | ||
845 | return bfd_mach_m16c; | |
846 | } | |
847 | ||
848 | static bfd_boolean | |
849 | m32c_elf_object_p (bfd *abfd) | |
850 | { | |
851 | bfd_default_set_arch_mach (abfd, bfd_arch_m32c, | |
852 | elf32_m32c_machine (abfd)); | |
853 | return TRUE; | |
854 | } | |
855 | \f | |
856 | ||
857 | #ifdef DEBUG | |
858 | static void | |
859 | dump_symtab (bfd * abfd, void *internal_syms, void *external_syms) | |
860 | { | |
861 | size_t locsymcount; | |
862 | Elf_Internal_Sym *isymbuf; | |
863 | Elf_Internal_Sym *isymend; | |
864 | Elf_Internal_Sym *isym; | |
865 | Elf_Internal_Shdr *symtab_hdr; | |
866 | bfd_boolean free_internal = 0, free_external = 0; | |
867 | char * st_info_str; | |
868 | char * st_info_stb_str; | |
869 | char * st_other_str; | |
870 | char * st_shndx_str; | |
871 | ||
872 | if (! internal_syms) | |
873 | { | |
874 | internal_syms = bfd_malloc (1000); | |
875 | free_internal = 1; | |
876 | } | |
877 | if (! external_syms) | |
878 | { | |
879 | external_syms = bfd_malloc (1000); | |
880 | free_external = 1; | |
881 | } | |
882 | ||
883 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
884 | locsymcount = symtab_hdr->sh_size / get_elf_backend_data(abfd)->s->sizeof_sym; | |
885 | if (free_internal) | |
886 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
887 | symtab_hdr->sh_info, 0, | |
888 | internal_syms, external_syms, NULL); | |
889 | else | |
890 | isymbuf = internal_syms; | |
891 | isymend = isymbuf + locsymcount; | |
892 | ||
893 | for (isym = isymbuf ; isym < isymend ; isym++) | |
894 | { | |
895 | switch (ELF_ST_TYPE (isym->st_info)) | |
896 | { | |
897 | case STT_FUNC: st_info_str = "STT_FUNC"; | |
898 | case STT_SECTION: st_info_str = "STT_SECTION"; | |
899 | case STT_SRELC: st_info_str = "STT_SRELC"; | |
900 | case STT_FILE: st_info_str = "STT_FILE"; | |
901 | case STT_OBJECT: st_info_str = "STT_OBJECT"; | |
902 | case STT_TLS: st_info_str = "STT_TLS"; | |
903 | default: st_info_str = ""; | |
904 | } | |
905 | switch (ELF_ST_BIND (isym->st_info)) | |
906 | { | |
907 | case STB_LOCAL: st_info_stb_str = "STB_LOCAL"; | |
908 | case STB_GLOBAL: st_info_stb_str = "STB_GLOBAL"; | |
909 | default: st_info_stb_str = ""; | |
910 | } | |
911 | switch (ELF_ST_VISIBILITY (isym->st_other)) | |
912 | { | |
913 | case STV_DEFAULT: st_other_str = "STV_DEFAULT"; | |
914 | case STV_INTERNAL: st_other_str = "STV_INTERNAL"; | |
915 | case STV_PROTECTED: st_other_str = "STV_PROTECTED"; | |
916 | default: st_other_str = ""; | |
917 | } | |
918 | switch (isym->st_shndx) | |
919 | { | |
920 | case SHN_ABS: st_shndx_str = "SHN_ABS"; | |
921 | case SHN_COMMON: st_shndx_str = "SHN_COMMON"; | |
922 | case SHN_UNDEF: st_shndx_str = "SHN_UNDEF"; | |
923 | default: st_shndx_str = ""; | |
924 | } | |
925 | ||
926 | printf ("isym = %p st_value = %lx st_size = %lx st_name = (%lu) %s " | |
927 | "st_info = (%d) %s %s st_other = (%d) %s st_shndx = (%d) %s\n", | |
928 | isym, | |
929 | (unsigned long) isym->st_value, | |
930 | (unsigned long) isym->st_size, | |
931 | isym->st_name, | |
932 | bfd_elf_string_from_elf_section (abfd, symtab_hdr->sh_link, | |
933 | isym->st_name), | |
934 | isym->st_info, st_info_str, st_info_stb_str, | |
935 | isym->st_other, st_other_str, | |
936 | isym->st_shndx, st_shndx_str); | |
937 | } | |
938 | if (free_internal) | |
939 | free (internal_syms); | |
940 | if (free_external) | |
941 | free (external_syms); | |
942 | } | |
943 | ||
944 | static char * | |
945 | m32c_get_reloc (long reloc) | |
946 | { | |
947 | if (0 <= reloc && reloc < R_M32C_max) | |
948 | return m32c_elf_howto_table[reloc].name; | |
949 | else | |
950 | return ""; | |
951 | } | |
952 | #endif /* DEBUG */ | |
953 | ||
954 | /* Handle relaxing. */ | |
955 | ||
956 | /* A subroutine of m32c_elf_relax_section. If the global symbol H | |
957 | is within the low 64k, remove any entry for it in the plt. */ | |
958 | ||
959 | struct relax_plt_data | |
960 | { | |
961 | asection *splt; | |
962 | bfd_boolean *again; | |
963 | }; | |
964 | ||
965 | static bfd_boolean | |
966 | m32c_relax_plt_check (struct elf_link_hash_entry *h, | |
967 | PTR xdata) | |
968 | { | |
969 | struct relax_plt_data *data = (struct relax_plt_data *) xdata; | |
970 | ||
971 | if (h->root.type == bfd_link_hash_warning) | |
972 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
973 | ||
974 | if (h->plt.offset != (bfd_vma) -1) | |
975 | { | |
976 | bfd_vma address; | |
977 | ||
978 | if (h->root.type == bfd_link_hash_undefined | |
979 | || h->root.type == bfd_link_hash_undefweak) | |
980 | address = 0; | |
981 | else | |
982 | address = (h->root.u.def.section->output_section->vma | |
983 | + h->root.u.def.section->output_offset | |
984 | + h->root.u.def.value); | |
985 | ||
986 | if (address <= 0xffff) | |
987 | { | |
988 | h->plt.offset = -1; | |
989 | data->splt->size -= 4; | |
990 | *data->again = TRUE; | |
991 | } | |
992 | } | |
993 | ||
994 | return TRUE; | |
995 | } | |
996 | ||
997 | /* A subroutine of m32c_elf_relax_section. If the global symbol H | |
998 | previously had a plt entry, give it a new entry offset. */ | |
999 | ||
1000 | static bfd_boolean | |
1001 | m32c_relax_plt_realloc (struct elf_link_hash_entry *h, | |
1002 | PTR xdata) | |
1003 | { | |
1004 | bfd_vma *entry = (bfd_vma *) xdata; | |
1005 | ||
1006 | if (h->root.type == bfd_link_hash_warning) | |
1007 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1008 | ||
1009 | if (h->plt.offset != (bfd_vma) -1) | |
1010 | { | |
1011 | h->plt.offset = *entry; | |
1012 | *entry += 4; | |
1013 | } | |
1014 | ||
1015 | return TRUE; | |
1016 | } | |
1017 | ||
1018 | static bfd_boolean | |
1019 | m32c_elf_relax_plt_section (bfd *dynobj, | |
1020 | asection *splt, | |
1021 | struct bfd_link_info *info, | |
1022 | bfd_boolean *again) | |
1023 | { | |
1024 | struct relax_plt_data relax_plt_data; | |
1025 | bfd *ibfd; | |
1026 | ||
1027 | /* Assume nothing changes. */ | |
1028 | *again = FALSE; | |
1029 | ||
1030 | if (info->relocatable) | |
1031 | return TRUE; | |
1032 | ||
1033 | /* We only relax the .plt section at the moment. */ | |
1034 | if (dynobj != elf_hash_table (info)->dynobj | |
1035 | || strcmp (splt->name, ".plt") != 0) | |
1036 | return TRUE; | |
1037 | ||
1038 | /* Quick check for an empty plt. */ | |
1039 | if (splt->size == 0) | |
1040 | return TRUE; | |
1041 | ||
1042 | /* Map across all global symbols; see which ones happen to | |
1043 | fall in the low 64k. */ | |
1044 | relax_plt_data.splt = splt; | |
1045 | relax_plt_data.again = again; | |
1046 | elf_link_hash_traverse (elf_hash_table (info), m32c_relax_plt_check, | |
1047 | &relax_plt_data); | |
1048 | ||
1049 | /* Likewise for local symbols, though that's somewhat less convenient | |
1050 | as we have to walk the list of input bfds and swap in symbol data. */ | |
1051 | for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next) | |
1052 | { | |
1053 | bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd); | |
1054 | Elf_Internal_Shdr *symtab_hdr; | |
1055 | Elf_Internal_Sym *isymbuf = NULL; | |
1056 | unsigned int idx; | |
1057 | ||
1058 | if (! local_plt_offsets) | |
1059 | continue; | |
1060 | ||
1061 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1062 | if (symtab_hdr->sh_info != 0) | |
1063 | { | |
1064 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1065 | if (isymbuf == NULL) | |
1066 | isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
1067 | symtab_hdr->sh_info, 0, | |
1068 | NULL, NULL, NULL); | |
1069 | if (isymbuf == NULL) | |
1070 | return FALSE; | |
1071 | } | |
1072 | ||
1073 | for (idx = 0; idx < symtab_hdr->sh_info; ++idx) | |
1074 | { | |
1075 | Elf_Internal_Sym *isym; | |
1076 | asection *tsec; | |
1077 | bfd_vma address; | |
1078 | ||
1079 | if (local_plt_offsets[idx] == (bfd_vma) -1) | |
1080 | continue; | |
1081 | ||
1082 | isym = &isymbuf[idx]; | |
1083 | if (isym->st_shndx == SHN_UNDEF) | |
1084 | continue; | |
1085 | else if (isym->st_shndx == SHN_ABS) | |
1086 | tsec = bfd_abs_section_ptr; | |
1087 | else if (isym->st_shndx == SHN_COMMON) | |
1088 | tsec = bfd_com_section_ptr; | |
1089 | else | |
1090 | tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
1091 | ||
1092 | address = (tsec->output_section->vma | |
1093 | + tsec->output_offset | |
1094 | + isym->st_value); | |
1095 | if (address <= 0xffff) | |
1096 | { | |
1097 | local_plt_offsets[idx] = -1; | |
1098 | splt->size -= 4; | |
1099 | *again = TRUE; | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | if (isymbuf != NULL | |
1104 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1105 | { | |
1106 | if (! info->keep_memory) | |
1107 | free (isymbuf); | |
1108 | else | |
1109 | { | |
1110 | /* Cache the symbols for elf_link_input_bfd. */ | |
1111 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1112 | } | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | /* If we changed anything, walk the symbols again to reallocate | |
1117 | .plt entry addresses. */ | |
1118 | if (*again && splt->size > 0) | |
1119 | { | |
1120 | bfd_vma entry = 0; | |
1121 | ||
1122 | elf_link_hash_traverse (elf_hash_table (info), | |
1123 | m32c_relax_plt_realloc, &entry); | |
1124 | ||
1125 | for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next) | |
1126 | { | |
1127 | bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd); | |
1128 | unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info; | |
1129 | unsigned int idx; | |
1130 | ||
1131 | if (! local_plt_offsets) | |
1132 | continue; | |
1133 | ||
1134 | for (idx = 0; idx < nlocals; ++idx) | |
1135 | if (local_plt_offsets[idx] != (bfd_vma) -1) | |
1136 | { | |
1137 | local_plt_offsets[idx] = entry; | |
1138 | entry += 4; | |
1139 | } | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | return TRUE; | |
1144 | } | |
1145 | ||
1146 | struct relax_reloc_s | |
1147 | { | |
1148 | int machine; | |
1149 | int opcode_mask; | |
1150 | bfd_vma opcode; /* original opcode or insn part */ | |
1151 | int relax_backward; /* lbound */ | |
1152 | int relax_forward; /* hbound */ | |
1153 | int value_shift; | |
1154 | int mask; | |
1155 | int new_opcode; /* new opcode */ | |
1156 | int old_reloc; /* old relocation */ | |
1157 | int new_reloc; /* new relocation */ | |
1158 | int use_pcrel; | |
1159 | int delete_n; /* # bytes differ between original and new */ | |
1160 | }; | |
1161 | static struct relax_reloc_s relax_reloc [] = | |
1162 | { | |
1163 | #if 0 | |
1164 | { | |
1165 | bfd_mach_m16c, | |
1166 | 0xff, | |
1167 | 0xfc, /* jmp.a */ | |
1168 | -32768, | |
1169 | 32767, | |
1170 | 2, | |
1171 | 0xffffff00, | |
1172 | 0xf4, /* jmp.w */ | |
1173 | R_M32C_8_ELABEL24, | |
1174 | R_M32C_8_PCREL16, | |
1175 | 1, | |
1176 | 1, | |
1177 | }, | |
1178 | { | |
1179 | bfd_mach_m32c, | |
1180 | 0xff, | |
1181 | 0xcc, /* jmp.a */ | |
1182 | -32768, | |
1183 | 32767, | |
1184 | 2, | |
1185 | 0xffffff00, | |
1186 | 0xce, /* jmp.w */ | |
1187 | R_M32C_8_ELABEL24, | |
1188 | R_M32C_8_PCREL16, | |
1189 | 1, | |
1190 | 1, | |
1191 | }, | |
1192 | { | |
1193 | bfd_mach_m32c, | |
1194 | 0xff, | |
1195 | 0xcd, /* jsr.a */ | |
1196 | -32768, | |
1197 | 32767, | |
1198 | 2, | |
1199 | 0xffffff00, | |
1200 | 0xcf, /* jsr.w */ | |
1201 | R_M32C_8_ELABEL24, | |
1202 | R_M32C_8_PCREL16, | |
1203 | 1, | |
1204 | 1, | |
1205 | }, | |
1206 | { | |
1207 | bfd_mach_m16c, | |
1208 | 0xff, | |
1209 | 0xf4, /* jmp.w */ | |
1210 | -128, | |
1211 | 127, | |
1212 | 2, | |
1213 | 0xffffff00, | |
1214 | 0xfe, /* jmp.b */ | |
1215 | R_M32C_8_PCREL16, | |
1216 | R_M32C_8_PCREL8, | |
1217 | 1, | |
1218 | 1, | |
1219 | }, | |
1220 | { | |
1221 | bfd_mach_m32c, | |
1222 | 0xff, | |
1223 | 0xce, /* jmp.w */ | |
1224 | -128, | |
1225 | 127, | |
1226 | 2, | |
1227 | 0xffffff00, | |
1228 | 0xbb, /* jmp.b */ | |
1229 | R_M32C_8_PCREL16, | |
1230 | R_M32C_8_PCREL8, | |
1231 | 1, | |
1232 | 1, | |
1233 | }, | |
1234 | { | |
1235 | bfd_mach_m32c, | |
1236 | 0xc0f6, | |
1237 | 0x8096, /* dest */ | |
1238 | 0, | |
1239 | 0xffff, | |
1240 | 3, | |
1241 | 0xffff3fff, | |
1242 | 0xc000, /* abs16 */ | |
1243 | R_M32C_24_ABS24, | |
1244 | R_M32C_24_ABS16, | |
1245 | 0, | |
1246 | 1, | |
1247 | }, | |
1248 | { | |
1249 | bfd_mach_m32c, | |
1250 | 0xc0f6, | |
1251 | 0x80a6, /* dest */ | |
1252 | 0, | |
1253 | 0xffff, | |
1254 | 4, | |
1255 | 0xffff3fff, | |
1256 | 0xc000, /* abs16 */ | |
1257 | R_M32C_32_ABS24, | |
1258 | R_M32C_32_ABS16, | |
1259 | 0, | |
1260 | 1, | |
1261 | }, | |
1262 | { | |
1263 | bfd_mach_m32c, | |
1264 | 0xc0f6, | |
1265 | 0x80b6, /* dest */ | |
1266 | 0, | |
1267 | 0xffff, | |
1268 | 5, | |
1269 | 0xffff3fff, | |
1270 | 0xc000, /* abs16 */ | |
1271 | R_M32C_40_ABS24, | |
1272 | R_M32C_40_ABS16, | |
1273 | 0, | |
1274 | 1, | |
1275 | }, | |
1276 | { | |
1277 | bfd_mach_m32c, | |
1278 | 0x30f0, | |
1279 | 0x20b0, /* src */ | |
1280 | 0, | |
1281 | 0xffff, | |
1282 | 2, | |
1283 | 0xffffcfff, | |
1284 | 0x3000, /* abs16 */ | |
1285 | R_M32C_16_ABS24, | |
1286 | R_M32C_16_ABS16, | |
1287 | 0, | |
1288 | 1, | |
1289 | }, | |
1290 | { | |
1291 | bfd_mach_m32c, | |
1292 | 0xc086, | |
1293 | 0x8086, /* dest */ | |
1294 | 0, | |
1295 | 0xffff, | |
1296 | 2, | |
1297 | 0xffff3fff, | |
1298 | 0xc000, /* abs16 */ | |
1299 | R_M32C_16_ABS24, | |
1300 | R_M32C_16_ABS16, | |
1301 | 0, | |
1302 | 1, | |
1303 | }, | |
1304 | #endif | |
1305 | { | |
1306 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
1307 | } | |
1308 | }; | |
1309 | static bfd_boolean | |
1310 | m32c_elf_relax_section | |
1311 | (bfd * abfd, | |
1312 | asection * sec, | |
1313 | struct bfd_link_info * link_info, | |
1314 | bfd_boolean * again) | |
1315 | { | |
1316 | Elf_Internal_Shdr *symtab_hdr; | |
1317 | Elf_Internal_Shdr *shndx_hdr; | |
1318 | Elf_Internal_Rela *internal_relocs; | |
1319 | Elf_Internal_Rela *free_relocs = NULL; | |
1320 | Elf_Internal_Rela *irel, *irelend; | |
1321 | bfd_byte * contents = NULL; | |
1322 | bfd_byte * free_contents = NULL; | |
1323 | Elf32_External_Sym *extsyms = NULL; | |
1324 | Elf32_External_Sym *free_extsyms = NULL; | |
1325 | Elf_External_Sym_Shndx *shndx_buf = NULL; | |
1326 | int machine; | |
1327 | ||
1328 | if (abfd == elf_hash_table (link_info)->dynobj | |
1329 | && strcmp (sec->name, ".plt") == 0) | |
1330 | return m32c_elf_relax_plt_section (abfd, sec, link_info, again); | |
1331 | ||
1332 | /* Assume nothing changes. */ | |
1333 | *again = FALSE; | |
1334 | ||
1335 | machine = elf32_m32c_machine (abfd); | |
1336 | ||
1337 | /* We don't have to do anything for a relocatable link, if | |
1338 | this section does not have relocs, or if this is not a | |
1339 | code section. */ | |
1340 | if (link_info->relocatable | |
1341 | || (sec->flags & SEC_RELOC) == 0 | |
1342 | || sec->reloc_count == 0 | |
1343 | || (sec->flags & SEC_CODE) == 0) | |
1344 | return TRUE; | |
1345 | ||
1346 | /* Relaxing doesn't quite work right yet. */ | |
1347 | return TRUE; | |
1348 | ||
1349 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1350 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
1351 | ||
1352 | /* Get a copy of the native relocations. */ | |
1353 | internal_relocs = (_bfd_elf_link_read_relocs | |
1354 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1355 | link_info->keep_memory)); | |
1356 | if (internal_relocs == NULL) | |
1357 | goto error_return; | |
1358 | if (! link_info->keep_memory) | |
1359 | free_relocs = internal_relocs; | |
1360 | ||
1361 | /* Walk through them looking for relaxing opportunities. */ | |
1362 | irelend = internal_relocs + sec->reloc_count; | |
1363 | ||
1364 | for (irel = internal_relocs; irel < irelend; irel++) | |
1365 | { | |
1366 | bfd_vma symval; | |
1367 | bfd_vma insn; | |
1368 | bfd_vma pc; | |
1369 | bfd_signed_vma pcrel_value; | |
1370 | bfd_vma addend; | |
1371 | int to_delete; | |
1372 | int i; | |
1373 | ||
1374 | /* Get the section contents. */ | |
1375 | if (contents == NULL) | |
1376 | { | |
1377 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1378 | contents = elf_section_data (sec)->this_hdr.contents; | |
1379 | /* Go get them off disk. */ | |
1380 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1381 | goto error_return; | |
1382 | } | |
1383 | ||
1384 | /* Read this BFD's symbols if we haven't done so already. */ | |
1385 | if (extsyms == NULL) | |
1386 | { | |
1387 | /* Get cached copy if it exists. */ | |
1388 | if (symtab_hdr->contents != NULL) | |
1389 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1390 | else | |
1391 | { | |
1392 | bfd_size_type amt = symtab_hdr->sh_size; | |
1393 | ||
1394 | /* Go get them off disk. */ | |
1395 | extsyms = (Elf32_External_Sym *) bfd_malloc (amt); | |
1396 | if (extsyms == NULL) | |
1397 | goto error_return; | |
1398 | free_extsyms = extsyms; | |
1399 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1400 | || bfd_bread (extsyms, amt, abfd) != amt) | |
1401 | goto error_return; | |
1402 | symtab_hdr->contents = (bfd_byte *) extsyms; | |
1403 | } | |
1404 | ||
1405 | if (shndx_hdr->sh_size != 0) | |
1406 | { | |
1407 | bfd_size_type amt; | |
1408 | ||
1409 | amt = symtab_hdr->sh_info; | |
1410 | amt *= sizeof (Elf_External_Sym_Shndx); | |
1411 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); | |
1412 | if (shndx_buf == NULL) | |
1413 | goto error_return; | |
1414 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
1415 | || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) | |
1416 | goto error_return; | |
1417 | shndx_hdr->contents = (bfd_byte *) shndx_buf; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* Get the value of the symbol referred to by the reloc. */ | |
1422 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1423 | { | |
1424 | /* A local symbol. */ | |
1425 | Elf32_External_Sym *esym; | |
1426 | Elf_External_Sym_Shndx *shndx; | |
1427 | Elf_Internal_Sym isym; | |
1428 | ||
1429 | esym = extsyms + ELF32_R_SYM (irel->r_info); | |
1430 | shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0); | |
1431 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym); | |
1432 | ||
1433 | symval = (isym.st_value | |
1434 | + sec->output_section->vma | |
1435 | + sec->output_offset); | |
1436 | } | |
1437 | else | |
1438 | { | |
1439 | unsigned long indx; | |
1440 | struct elf_link_hash_entry *h; | |
1441 | ||
1442 | /* An external symbol. */ | |
1443 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1444 | h = elf_sym_hashes (abfd)[indx]; | |
1445 | BFD_ASSERT (h != NULL); | |
1446 | ||
1447 | if (h->root.type != bfd_link_hash_defined | |
1448 | && h->root.type != bfd_link_hash_defweak) | |
1449 | /* This appears to be a reference to an undefined | |
1450 | symbol. Just ignore it--it will be caught by the | |
1451 | regular reloc processing. */ | |
1452 | continue; | |
1453 | ||
1454 | symval = (h->root.u.def.value | |
1455 | + h->root.u.def.section->output_section->vma | |
1456 | + h->root.u.def.section->output_offset); | |
1457 | } | |
1458 | ||
1459 | /* There will always be room for the relaxed insn, since it is smaller | |
1460 | than the one it would replace. */ | |
1461 | BFD_ASSERT (irel->r_offset <= sec->size - 2); | |
1462 | ||
1463 | insn = bfd_get_16 (abfd, contents + irel->r_offset + 0); | |
1464 | ||
1465 | addend = irel->r_addend; | |
1466 | for (i = 0; relax_reloc[i].machine; i++) | |
1467 | { | |
1468 | #ifdef DEBUG | |
1469 | _bfd_error_handler ("insn %x %d mask %x opcode %x =%x\n", | |
1470 | insn, i, relax_reloc[i].opcode_mask, | |
1471 | relax_reloc[i].opcode, | |
1472 | (insn & relax_reloc[i].opcode_mask) == relax_reloc[i].opcode); | |
1473 | #endif | |
1474 | if (!(machine == relax_reloc[i].machine | |
1475 | && (insn & relax_reloc[i].opcode_mask) == relax_reloc[i].opcode | |
1476 | && (relax_reloc[i].old_reloc | |
1477 | == (int) ELF32_R_TYPE(irel->r_info)))) | |
1478 | continue; | |
1479 | ||
1480 | /* At this point we've confirmed we have a matching insn. Now | |
1481 | ensure the operand is in range. */ | |
1482 | if (relax_reloc[i].use_pcrel) | |
1483 | { | |
1484 | pc = sec->output_section->vma + sec->output_offset | |
1485 | + irel->r_offset; | |
1486 | pcrel_value = symval - pc; | |
1487 | #ifndef USE_REL /* put in for learning purposes */ | |
1488 | pcrel_value += addend; | |
1489 | #else | |
1490 | addend = bfd_get_signed_16 (abfd, contents + irel->r_offset + 2); | |
1491 | pcrel_value += addend; | |
1492 | #endif | |
1493 | } | |
1494 | else | |
1495 | pcrel_value = symval; | |
1496 | ||
1497 | if (pcrel_value >= relax_reloc[i].relax_backward | |
1498 | && pcrel_value < relax_reloc[i].relax_forward + 2) | |
1499 | { | |
1500 | /* We can relax to a shorter operand. */ | |
1501 | insn = (insn & relax_reloc[i].mask) | relax_reloc[i].new_opcode; | |
1502 | ||
1503 | to_delete = relax_reloc[i].delete_n; | |
1504 | ||
1505 | /* Rewrite the insn. */ | |
1506 | bfd_put_16 (abfd, insn, contents + irel->r_offset); | |
1507 | ||
1508 | /* Set the new reloc type. */ | |
1509 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1510 | relax_reloc[i].new_reloc); | |
1511 | irel->r_addend = pcrel_value; | |
1512 | } | |
1513 | else | |
1514 | continue; | |
1515 | ||
1516 | #ifdef DEBUG | |
1517 | _bfd_error_handler ("insn %x pc %x index %d mask %x shift %d delete %d\n" | |
1518 | "old reloc %s new reloc %s", | |
1519 | insn, sec->output_section->vma | |
1520 | + sec->output_offset + irel->r_offset + 2, | |
1521 | i, relax_reloc[i].opcode_mask, | |
1522 | relax_reloc[i].value_shift, to_delete, | |
1523 | m32c_get_reloc (relax_reloc[i].old_reloc), | |
1524 | m32c_get_reloc (relax_reloc[i].new_reloc)); | |
1525 | #endif | |
1526 | ||
1527 | /* Note that we've changed the relocs, section contents, etc. */ | |
1528 | elf_section_data (sec)->relocs = internal_relocs; | |
1529 | free_relocs = NULL; | |
1530 | ||
1531 | elf_section_data (sec)->this_hdr.contents = contents; | |
1532 | free_contents = NULL; | |
1533 | ||
1534 | symtab_hdr->contents = (bfd_byte *) extsyms; | |
1535 | free_extsyms = NULL; | |
1536 | ||
1537 | /* Delete TO_DELETE bytes of data. */ | |
1538 | if (! m32c_elf_relax_delete_bytes | |
1539 | (abfd, sec, irel->r_offset + relax_reloc[i].value_shift, | |
1540 | to_delete)) | |
1541 | goto error_return; | |
1542 | } /* next relax_reloc */ | |
1543 | } /* next relocation */ | |
1544 | ||
1545 | if (free_relocs != NULL) | |
1546 | { | |
1547 | free (free_relocs); | |
1548 | free_relocs = NULL; | |
1549 | } | |
1550 | ||
1551 | if (free_contents != NULL) | |
1552 | { | |
1553 | if (! link_info->keep_memory) | |
1554 | free (free_contents); | |
1555 | /* Cache the section contents for elf_link_input_bfd. */ | |
1556 | else | |
1557 | elf_section_data (sec)->this_hdr.contents = contents; | |
1558 | ||
1559 | free_contents = NULL; | |
1560 | } | |
1561 | ||
1562 | if (shndx_buf != NULL) | |
1563 | { | |
1564 | shndx_hdr->contents = NULL; | |
1565 | free (shndx_buf); | |
1566 | } | |
1567 | ||
1568 | if (free_extsyms != NULL) | |
1569 | { | |
1570 | if (! link_info->keep_memory) | |
1571 | free (free_extsyms); | |
1572 | /* Cache the symbols for elf_link_input_bfd. */ | |
1573 | else | |
1574 | symtab_hdr->contents = NULL /* (unsigned char *) extsyms*/; | |
1575 | ||
1576 | free_extsyms = NULL; | |
1577 | } | |
1578 | /* elf_link_input_bfd expects internal syms. */ | |
1579 | symtab_hdr->contents = NULL; | |
1580 | ||
1581 | return TRUE; | |
1582 | ||
1583 | error_return: | |
1584 | if (free_relocs != NULL) | |
1585 | free (free_relocs); | |
1586 | if (free_contents != NULL) | |
1587 | free (free_contents); | |
1588 | if (shndx_buf != NULL) | |
1589 | { | |
1590 | shndx_hdr->contents = NULL; | |
1591 | free (shndx_buf); | |
1592 | } | |
1593 | if (free_extsyms != NULL) | |
1594 | free (free_extsyms); | |
1595 | return FALSE; | |
1596 | } | |
1597 | ||
1598 | /* Delete some bytes from a section while relaxing. */ | |
1599 | ||
1600 | static bfd_boolean | |
1601 | m32c_elf_relax_delete_bytes | |
1602 | (bfd * abfd, | |
1603 | asection * sec, | |
1604 | bfd_vma addr, | |
1605 | int count) | |
1606 | { | |
1607 | Elf_Internal_Shdr *symtab_hdr; | |
1608 | Elf_Internal_Shdr *shndx_hdr; | |
1609 | int sec_shndx; | |
1610 | bfd_byte *contents; | |
1611 | Elf_Internal_Rela *irel; | |
1612 | Elf_Internal_Rela *irelend; | |
1613 | Elf_Internal_Rela *irelalign; | |
1614 | bfd_vma toaddr; | |
1615 | Elf32_External_Sym *esym; | |
1616 | Elf32_External_Sym *esymend; | |
1617 | Elf32_External_Sym *extsyms; | |
1618 | Elf_External_Sym_Shndx *shndx_buf; | |
1619 | Elf_External_Sym_Shndx *shndx; | |
1620 | struct elf_link_hash_entry ** sym_hashes; | |
1621 | struct elf_link_hash_entry ** end_hashes; | |
1622 | unsigned int symcount; | |
1623 | ||
1624 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; | |
1625 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1626 | shndx_hdr = & elf_tdata (abfd)->symtab_shndx_hdr; | |
1627 | shndx_buf = (Elf_External_Sym_Shndx *) shndx_hdr->contents; | |
1628 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1629 | contents = elf_section_data (sec)->this_hdr.contents; | |
1630 | ||
1631 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
1632 | power larger than the number of bytes we are deleting. */ | |
1633 | irelalign = NULL; | |
1634 | toaddr = sec->size; | |
1635 | ||
1636 | irel = elf_section_data (sec)->relocs; | |
1637 | irelend = irel + sec->reloc_count; | |
1638 | ||
1639 | /* Actually delete the bytes. */ | |
1640 | memmove (contents + addr, contents + addr + count, (size_t) (toaddr - addr - count)); | |
1641 | sec->size -= count; | |
1642 | ||
1643 | /* Adjust all the relocs. */ | |
1644 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel ++) | |
1645 | { | |
1646 | /* Get the new reloc address. */ | |
1647 | if (irel->r_offset > addr && irel->r_offset < toaddr) | |
1648 | irel->r_offset -= count; | |
1649 | if (irel->r_addend > addr && irel->r_addend < toaddr) | |
1650 | irel->r_addend -= count; | |
1651 | } | |
1652 | ||
1653 | /* Adjust the local symbols defined in this section. */ | |
1654 | shndx = shndx_buf; | |
1655 | esym = extsyms; | |
1656 | esymend = esym + symtab_hdr->sh_info; | |
1657 | for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL)) | |
1658 | { | |
1659 | Elf_Internal_Sym isym; | |
1660 | Elf_External_Sym_Shndx dummy; | |
1661 | ||
1662 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym); | |
1663 | ||
1664 | if ((int) isym.st_shndx == sec_shndx | |
1665 | && isym.st_value > addr | |
1666 | && isym.st_value < toaddr) | |
1667 | { | |
1668 | isym.st_value -= count; | |
1669 | bfd_elf32_swap_symbol_out (abfd, &isym, (PTR) esym, (PTR) & dummy); | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | /* Now adjust the global symbols defined in this section. */ | |
1674 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1675 | - symtab_hdr->sh_info); | |
1676 | sym_hashes = elf_sym_hashes (abfd); | |
1677 | // sym_hashes += symtab_hdr->sh_info; | |
1678 | end_hashes = sym_hashes + symcount; | |
1679 | ||
1680 | for (; sym_hashes < end_hashes; sym_hashes ++) | |
1681 | { | |
1682 | struct elf_link_hash_entry * sym_hash = * sym_hashes; | |
1683 | ||
1684 | if (sym_hash && | |
1685 | ( sym_hash->root.type == bfd_link_hash_defined | |
1686 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1687 | && sym_hash->root.u.def.section == sec | |
1688 | && sym_hash->root.u.def.value > addr | |
1689 | && sym_hash->root.u.def.value < toaddr) | |
1690 | sym_hash->root.u.def.value -= count; | |
1691 | } | |
1692 | ||
1693 | return TRUE; | |
1694 | } | |
1695 | \f | |
1696 | ||
1697 | #define ELF_ARCH bfd_arch_m32c | |
1698 | #define ELF_MACHINE_CODE EM_M32C | |
1699 | #define ELF_MAXPAGESIZE 0x1000 | |
1700 | ||
1701 | #if 0 | |
1702 | #define TARGET_BIG_SYM bfd_elf32_m32c_vec | |
1703 | #define TARGET_BIG_NAME "elf32-m32c" | |
1704 | #else | |
1705 | #define TARGET_LITTLE_SYM bfd_elf32_m32c_vec | |
1706 | #define TARGET_LITTLE_NAME "elf32-m32c" | |
1707 | #endif | |
1708 | ||
1709 | #define elf_info_to_howto_rel NULL | |
1710 | #define elf_info_to_howto m32c_info_to_howto_rela | |
1711 | #define elf_backend_object_p m32c_elf_object_p | |
1712 | #define elf_backend_relocate_section m32c_elf_relocate_section | |
1713 | #define elf_backend_gc_mark_hook m32c_elf_gc_mark_hook | |
1714 | #define elf_backend_gc_sweep_hook m32c_elf_gc_sweep_hook | |
1715 | #define elf_backend_check_relocs m32c_elf_check_relocs | |
1716 | #define elf_backend_object_p m32c_elf_object_p | |
1717 | #define elf_symbol_leading_char ('_') | |
1718 | #define elf_backend_always_size_sections \ | |
1719 | m32c_elf_always_size_sections | |
1720 | #define elf_backend_finish_dynamic_sections \ | |
1721 | m32c_elf_finish_dynamic_sections | |
1722 | ||
1723 | #define elf_backend_can_gc_sections 1 | |
1724 | ||
1725 | #define bfd_elf32_bfd_reloc_type_lookup m32c_reloc_type_lookup | |
1726 | #define bfd_elf32_bfd_relax_section m32c_elf_relax_section | |
1727 | #define bfd_elf32_bfd_set_private_flags m32c_elf_set_private_flags | |
1728 | #define bfd_elf32_bfd_merge_private_bfd_data m32c_elf_merge_private_bfd_data | |
1729 | #define bfd_elf32_bfd_print_private_bfd_data m32c_elf_print_private_bfd_data | |
1730 | ||
1731 | #include "elf32-target.h" |