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2469cfa2 NC |
1 | /* MSP430-specific support for 32-bit ELF |
2 | Copyright (C) 2002 Free Software Foundation, Inc. | |
3 | Contributed by Dmitry Diky <diwil@mail.ru> | |
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 "libiberty.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/msp430.h" | |
27 | ||
28 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
29 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
30 | ||
31 | static void msp430_info_to_howto_rela | |
32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
33 | ||
34 | static asection *elf32_msp430_gc_mark_hook | |
35 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
36 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
37 | ||
38 | static bfd_boolean elf32_msp430_gc_sweep_hook | |
39 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
40 | const Elf_Internal_Rela *)); | |
41 | ||
42 | static bfd_boolean elf32_msp430_check_relocs | |
43 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
44 | const Elf_Internal_Rela *)); | |
45 | ||
46 | static bfd_reloc_status_type msp430_final_link_relocate | |
47 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, | |
48 | Elf_Internal_Rela *, bfd_vma)); | |
49 | ||
50 | static bfd_boolean elf32_msp430_relocate_section | |
51 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
52 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
53 | ||
54 | static void bfd_elf_msp430_final_write_processing | |
55 | PARAMS ((bfd *, bfd_boolean)); | |
56 | ||
57 | static bfd_boolean elf32_msp430_object_p | |
58 | PARAMS ((bfd *)); | |
59 | ||
60 | static void elf32_msp430_post_process_headers | |
61 | PARAMS ((bfd *, struct bfd_link_info *)); | |
62 | ||
63 | /* Use RELA instead of REL. */ | |
64 | #undef USE_REL | |
65 | ||
66 | static reloc_howto_type elf_msp430_howto_table[] = | |
67 | { | |
68 | HOWTO (R_MSP430_NONE, /* type */ | |
69 | 0, /* rightshift */ | |
70 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
71 | 32, /* bitsize */ | |
72 | FALSE, /* pc_relative */ | |
73 | 0, /* bitpos */ | |
74 | complain_overflow_bitfield, /* complain_on_overflow */ | |
75 | bfd_elf_generic_reloc, /* special_function */ | |
76 | "R_MSP430_NONE", /* name */ | |
77 | FALSE, /* partial_inplace */ | |
78 | 0, /* src_mask */ | |
79 | 0, /* dst_mask */ | |
80 | FALSE), /* pcrel_offset */ | |
81 | ||
82 | HOWTO (R_MSP430_32, /* type */ | |
83 | 0, /* rightshift */ | |
84 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
85 | 32, /* bitsize */ | |
86 | FALSE, /* pc_relative */ | |
87 | 0, /* bitpos */ | |
88 | complain_overflow_bitfield, /* complain_on_overflow */ | |
89 | bfd_elf_generic_reloc, /* special_function */ | |
90 | "R_MSP430_32", /* name */ | |
91 | FALSE, /* partial_inplace */ | |
92 | 0xffffffff, /* src_mask */ | |
93 | 0xffffffff, /* dst_mask */ | |
94 | FALSE), /* pcrel_offset */ | |
95 | ||
96 | /* A 13 bit PC relative relocation. */ | |
97 | HOWTO (R_MSP430_10_PCREL, /* type */ | |
98 | 1, /* rightshift */ | |
99 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
100 | 10, /* bitsize */ | |
101 | TRUE, /* pc_relative */ | |
102 | 0, /* bitpos */ | |
103 | complain_overflow_bitfield, /* complain_on_overflow */ | |
104 | bfd_elf_generic_reloc, /* special_function */ | |
105 | "R_MSP430_13_PCREL", /* name */ | |
106 | FALSE, /* partial_inplace */ | |
107 | 0xfff, /* src_mask */ | |
108 | 0xfff, /* dst_mask */ | |
109 | TRUE), /* pcrel_offset */ | |
110 | ||
111 | /* A 16 bit absolute relocation. */ | |
112 | HOWTO (R_MSP430_16, /* type */ | |
113 | 0, /* rightshift */ | |
114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 16, /* bitsize */ | |
116 | FALSE, /* pc_relative */ | |
117 | 0, /* bitpos */ | |
118 | complain_overflow_dont,/* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_MSP430_16", /* name */ | |
121 | FALSE, /* partial_inplace */ | |
122 | 0xffff, /* src_mask */ | |
123 | 0xffff, /* dst_mask */ | |
124 | FALSE), /* pcrel_offset */ | |
125 | ||
126 | /* A 16 bit absolute relocation for command address. */ | |
127 | HOWTO (R_MSP430_16_PCREL, /* type */ | |
128 | 1, /* rightshift */ | |
129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
130 | 16, /* bitsize */ | |
131 | TRUE, /* pc_relative */ | |
132 | 0, /* bitpos */ | |
133 | complain_overflow_dont,/* complain_on_overflow */ | |
134 | bfd_elf_generic_reloc, /* special_function */ | |
135 | "R_MSP430_16_PCREL", /* name */ | |
136 | FALSE, /* partial_inplace */ | |
137 | 0xffff, /* src_mask */ | |
138 | 0xffff, /* dst_mask */ | |
139 | TRUE), /* pcrel_offset */ | |
140 | ||
141 | /* A 16 bit absolute relocation, byte operations. */ | |
142 | HOWTO (R_MSP430_16_BYTE, /* type */ | |
143 | 0, /* rightshift */ | |
144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
145 | 16, /* bitsize */ | |
146 | FALSE, /* pc_relative */ | |
147 | 0, /* bitpos */ | |
148 | complain_overflow_dont,/* complain_on_overflow */ | |
149 | bfd_elf_generic_reloc, /* special_function */ | |
150 | "R_MSP430_16_BYTE", /* name */ | |
151 | FALSE, /* partial_inplace */ | |
152 | 0xffff, /* src_mask */ | |
153 | 0xffff, /* dst_mask */ | |
154 | FALSE), /* pcrel_offset */ | |
155 | ||
156 | /* A 16 bit absolute relocation for command address. */ | |
157 | HOWTO (R_MSP430_16_PCREL_BYTE,/* type */ | |
158 | 1, /* rightshift */ | |
159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
160 | 16, /* bitsize */ | |
161 | TRUE, /* pc_relative */ | |
162 | 0, /* bitpos */ | |
163 | complain_overflow_dont,/* complain_on_overflow */ | |
164 | bfd_elf_generic_reloc, /* special_function */ | |
165 | "R_MSP430_16_PCREL_BYTE", /* name */ | |
166 | FALSE, /* partial_inplace */ | |
167 | 0xffff, /* src_mask */ | |
168 | 0xffff, /* dst_mask */ | |
169 | TRUE) /* pcrel_offset */ | |
170 | }; | |
171 | ||
172 | /* Map BFD reloc types to MSP430 ELF reloc types. */ | |
173 | ||
174 | struct msp430_reloc_map | |
175 | { | |
176 | bfd_reloc_code_real_type bfd_reloc_val; | |
177 | unsigned int elf_reloc_val; | |
178 | }; | |
179 | ||
180 | static const struct msp430_reloc_map msp430_reloc_map[] = | |
181 | { | |
182 | {BFD_RELOC_NONE, R_MSP430_NONE}, | |
183 | {BFD_RELOC_32, R_MSP430_32}, | |
184 | {BFD_RELOC_MSP430_10_PCREL, R_MSP430_10_PCREL}, | |
185 | {BFD_RELOC_16, R_MSP430_16_BYTE}, | |
186 | {BFD_RELOC_MSP430_16_PCREL, R_MSP430_16_PCREL}, | |
187 | {BFD_RELOC_MSP430_16, R_MSP430_16}, | |
188 | {BFD_RELOC_MSP430_16_PCREL_BYTE, R_MSP430_16_PCREL_BYTE}, | |
189 | {BFD_RELOC_MSP430_16_BYTE, R_MSP430_16_BYTE} | |
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; i < ARRAY_SIZE (msp430_reloc_map); i++) | |
200 | if (msp430_reloc_map[i].bfd_reloc_val == code) | |
201 | return &elf_msp430_howto_table[msp430_reloc_map[i].elf_reloc_val]; | |
202 | ||
203 | return NULL; | |
204 | } | |
205 | ||
206 | /* Set the howto pointer for an MSP430 ELF reloc. */ | |
207 | ||
208 | static void | |
209 | msp430_info_to_howto_rela (abfd, cache_ptr, dst) | |
210 | bfd *abfd ATTRIBUTE_UNUSED; | |
211 | arelent *cache_ptr; | |
212 | Elf_Internal_Rela *dst; | |
213 | { | |
214 | unsigned int r_type; | |
215 | ||
216 | r_type = ELF32_R_TYPE (dst->r_info); | |
217 | BFD_ASSERT (r_type < (unsigned int) R_MSP430_max); | |
218 | cache_ptr->howto = &elf_msp430_howto_table[r_type]; | |
219 | } | |
220 | ||
221 | static asection * | |
222 | elf32_msp430_gc_mark_hook (sec, info, rel, h, sym) | |
223 | asection *sec; | |
224 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
225 | Elf_Internal_Rela *rel; | |
226 | struct elf_link_hash_entry *h; | |
227 | Elf_Internal_Sym *sym; | |
228 | { | |
229 | if (h != NULL) | |
230 | { | |
231 | switch (ELF32_R_TYPE (rel->r_info)) | |
232 | { | |
233 | default: | |
234 | switch (h->root.type) | |
235 | { | |
236 | case bfd_link_hash_defined: | |
237 | case bfd_link_hash_defweak: | |
238 | return h->root.u.def.section; | |
239 | ||
240 | case bfd_link_hash_common: | |
241 | return h->root.u.c.p->section; | |
242 | ||
243 | default: | |
244 | break; | |
245 | } | |
246 | } | |
247 | } | |
248 | else | |
249 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
250 | ||
251 | return NULL; | |
252 | } | |
253 | ||
254 | static bfd_boolean | |
255 | elf32_msp430_gc_sweep_hook (abfd, info, sec, relocs) | |
256 | bfd *abfd ATTRIBUTE_UNUSED; | |
257 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
258 | asection *sec ATTRIBUTE_UNUSED; | |
259 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
260 | { | |
261 | /* We don't use got and plt entries for msp430. */ | |
262 | return TRUE; | |
263 | } | |
264 | ||
265 | /* Look through the relocs for a section during the first phase. | |
266 | Since we don't do .gots or .plts, we just need to consider the | |
267 | virtual table relocs for gc. */ | |
268 | ||
269 | static bfd_boolean | |
270 | elf32_msp430_check_relocs (abfd, info, sec, relocs) | |
271 | bfd *abfd; | |
272 | struct bfd_link_info *info; | |
273 | asection *sec; | |
274 | const Elf_Internal_Rela *relocs; | |
275 | { | |
276 | Elf_Internal_Shdr *symtab_hdr; | |
277 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
278 | const Elf_Internal_Rela *rel; | |
279 | const Elf_Internal_Rela *rel_end; | |
280 | ||
281 | if (info->relocateable) | |
282 | return TRUE; | |
283 | ||
284 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
285 | sym_hashes = elf_sym_hashes (abfd); | |
286 | sym_hashes_end = | |
287 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
288 | if (!elf_bad_symtab (abfd)) | |
289 | sym_hashes_end -= symtab_hdr->sh_info; | |
290 | ||
291 | rel_end = relocs + sec->reloc_count; | |
292 | for (rel = relocs; rel < rel_end; rel++) | |
293 | { | |
294 | struct elf_link_hash_entry *h; | |
295 | unsigned long r_symndx; | |
296 | ||
297 | r_symndx = ELF32_R_SYM (rel->r_info); | |
298 | if (r_symndx < symtab_hdr->sh_info) | |
299 | h = NULL; | |
300 | else | |
301 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
302 | } | |
303 | ||
304 | return TRUE; | |
305 | } | |
306 | ||
307 | /* Perform a single relocation. By default we use the standard BFD | |
308 | routines, but a few relocs, we have to do them ourselves. */ | |
309 | ||
310 | static bfd_reloc_status_type | |
311 | msp430_final_link_relocate (howto, input_bfd, input_section, | |
312 | contents, rel, relocation) | |
313 | reloc_howto_type *howto; | |
314 | bfd *input_bfd; | |
315 | asection *input_section; | |
316 | bfd_byte *contents; | |
317 | Elf_Internal_Rela *rel; | |
318 | bfd_vma relocation; | |
319 | { | |
320 | bfd_reloc_status_type r = bfd_reloc_ok; | |
321 | bfd_vma x; | |
322 | bfd_signed_vma srel; | |
323 | ||
324 | switch (howto->type) | |
325 | { | |
326 | case R_MSP430_10_PCREL: | |
327 | contents += rel->r_offset; | |
328 | srel = (bfd_signed_vma) relocation; | |
329 | srel += rel->r_addend; | |
330 | srel -= rel->r_offset; | |
331 | srel -= 2; /* Branch instructions add 2 to the PC... */ | |
332 | srel -= (input_section->output_section->vma + | |
333 | input_section->output_offset); | |
334 | ||
335 | if (srel & 1) | |
336 | return bfd_reloc_outofrange; | |
337 | ||
338 | /* MSP430 addresses commands as words. */ | |
339 | srel >>= 1; | |
340 | ||
341 | /* Check for an overflow. */ | |
342 | if (srel < -512 || srel > 511) | |
343 | return bfd_reloc_overflow; | |
344 | ||
345 | x = bfd_get_16 (input_bfd, contents); | |
346 | x = (x & 0xfc00) | (srel & 0x3ff); | |
347 | bfd_put_16 (input_bfd, x, contents); | |
348 | break; | |
349 | ||
350 | case R_MSP430_16_PCREL: | |
351 | contents += rel->r_offset; | |
352 | srel = (bfd_signed_vma) relocation; | |
353 | srel += rel->r_addend; | |
354 | srel -= rel->r_offset; | |
355 | /* Only branch instructions add 2 to the PC... */ | |
356 | srel -= (input_section->output_section->vma + | |
357 | input_section->output_offset); | |
358 | ||
359 | if (srel & 1) | |
360 | return bfd_reloc_outofrange; | |
361 | ||
362 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | |
363 | break; | |
364 | ||
365 | case R_MSP430_16_PCREL_BYTE: | |
366 | contents += rel->r_offset; | |
367 | srel = (bfd_signed_vma) relocation; | |
368 | srel += rel->r_addend; | |
369 | srel -= rel->r_offset; | |
370 | /* Only branch instructions add 2 to the PC... */ | |
371 | srel -= (input_section->output_section->vma + | |
372 | input_section->output_offset); | |
373 | ||
374 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | |
375 | break; | |
376 | ||
377 | case R_MSP430_16_BYTE: | |
378 | contents += rel->r_offset; | |
379 | srel = (bfd_signed_vma) relocation; | |
380 | srel += rel->r_addend; | |
381 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | |
382 | break; | |
383 | ||
384 | case R_MSP430_16: | |
385 | contents += rel->r_offset; | |
386 | srel = (bfd_signed_vma) relocation; | |
387 | srel += rel->r_addend; | |
388 | ||
389 | if (srel & 1) | |
390 | return bfd_reloc_notsupported; | |
391 | ||
392 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | |
393 | break; | |
394 | ||
395 | default: | |
396 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
397 | contents, rel->r_offset, | |
398 | relocation, rel->r_addend); | |
399 | } | |
400 | ||
401 | return r; | |
402 | } | |
403 | ||
404 | /* Relocate an MSP430 ELF section. */ | |
405 | ||
406 | static bfd_boolean | |
407 | elf32_msp430_relocate_section (output_bfd, info, input_bfd, input_section, | |
408 | contents, relocs, local_syms, local_sections) | |
409 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
410 | struct bfd_link_info *info; | |
411 | bfd *input_bfd; | |
412 | asection *input_section; | |
413 | bfd_byte *contents; | |
414 | Elf_Internal_Rela *relocs; | |
415 | Elf_Internal_Sym *local_syms; | |
416 | asection **local_sections; | |
417 | { | |
418 | Elf_Internal_Shdr *symtab_hdr; | |
419 | struct elf_link_hash_entry **sym_hashes; | |
420 | Elf_Internal_Rela *rel; | |
421 | Elf_Internal_Rela *relend; | |
422 | ||
423 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
424 | sym_hashes = elf_sym_hashes (input_bfd); | |
425 | relend = relocs + input_section->reloc_count; | |
426 | ||
427 | for (rel = relocs; rel < relend; rel++) | |
428 | { | |
429 | reloc_howto_type *howto; | |
430 | unsigned long r_symndx; | |
431 | Elf_Internal_Sym *sym; | |
432 | asection *sec; | |
433 | struct elf_link_hash_entry *h; | |
434 | bfd_vma relocation; | |
435 | bfd_reloc_status_type r; | |
436 | const char *name = NULL; | |
437 | int r_type; | |
438 | ||
439 | /* This is a final link. */ | |
440 | ||
441 | r_type = ELF32_R_TYPE (rel->r_info); | |
442 | r_symndx = ELF32_R_SYM (rel->r_info); | |
443 | howto = elf_msp430_howto_table + ELF32_R_TYPE (rel->r_info); | |
444 | h = NULL; | |
445 | sym = NULL; | |
446 | sec = NULL; | |
447 | ||
448 | if (r_symndx < symtab_hdr->sh_info) | |
449 | { | |
450 | sym = local_syms + r_symndx; | |
451 | sec = local_sections[r_symndx]; | |
452 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); | |
453 | ||
454 | name = bfd_elf_string_from_elf_section | |
455 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
456 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
457 | } | |
458 | else | |
459 | { | |
460 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
461 | ||
462 | while (h->root.type == bfd_link_hash_indirect | |
463 | || h->root.type == bfd_link_hash_warning) | |
464 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
465 | ||
466 | name = h->root.root.string; | |
467 | ||
468 | if (h->root.type == bfd_link_hash_defined | |
469 | || h->root.type == bfd_link_hash_defweak) | |
470 | { | |
471 | sec = h->root.u.def.section; | |
472 | relocation = (h->root.u.def.value | |
473 | + sec->output_section->vma + sec->output_offset); | |
474 | } | |
475 | else if (h->root.type == bfd_link_hash_undefweak) | |
476 | { | |
477 | relocation = 0; | |
478 | } | |
479 | else | |
480 | { | |
481 | if (!((*info->callbacks->undefined_symbol) | |
482 | (info, h->root.root.string, input_bfd, | |
483 | input_section, rel->r_offset, TRUE))) | |
484 | return FALSE; | |
485 | relocation = 0; | |
486 | } | |
487 | } | |
488 | ||
489 | r = msp430_final_link_relocate (howto, input_bfd, input_section, | |
490 | contents, rel, relocation); | |
491 | ||
492 | if (r != bfd_reloc_ok) | |
493 | { | |
494 | const char *msg = (const char *) NULL; | |
495 | ||
496 | switch (r) | |
497 | { | |
498 | case bfd_reloc_overflow: | |
499 | r = info->callbacks->reloc_overflow | |
500 | (info, name, howto->name, (bfd_vma) 0, | |
501 | input_bfd, input_section, rel->r_offset); | |
502 | break; | |
503 | ||
504 | case bfd_reloc_undefined: | |
505 | r = info->callbacks->undefined_symbol | |
506 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
507 | break; | |
508 | ||
509 | case bfd_reloc_outofrange: | |
510 | msg = _("internal error: out of range error"); | |
511 | break; | |
512 | ||
513 | case bfd_reloc_notsupported: | |
514 | msg = _("internal error: unsupported relocation error"); | |
515 | break; | |
516 | ||
517 | case bfd_reloc_dangerous: | |
518 | msg = _("internal error: dangerous relocation"); | |
519 | break; | |
520 | ||
521 | default: | |
522 | msg = _("internal error: unknown error"); | |
523 | break; | |
524 | } | |
525 | ||
526 | if (msg) | |
527 | r = info->callbacks->warning | |
528 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
529 | ||
530 | if (!r) | |
531 | return FALSE; | |
532 | } | |
533 | ||
534 | } | |
535 | ||
536 | return TRUE; | |
537 | } | |
538 | ||
539 | /* The final processing done just before writing out a MSP430 ELF object | |
540 | file. This gets the MSP430 architecture right based on the machine | |
541 | number. */ | |
542 | ||
543 | static void | |
544 | bfd_elf_msp430_final_write_processing (abfd, linker) | |
545 | bfd *abfd; | |
546 | bfd_boolean linker ATTRIBUTE_UNUSED; | |
547 | { | |
548 | unsigned long val; | |
549 | ||
550 | switch (bfd_get_mach (abfd)) | |
551 | { | |
552 | default: | |
553 | case bfd_mach_msp12: | |
554 | val = E_MSP430_MACH_MSP430x12; | |
555 | break; | |
556 | ||
557 | case bfd_mach_msp110: | |
558 | val = E_MSP430_MACH_MSP430x11x1; | |
559 | break; | |
560 | ||
561 | case bfd_mach_msp11: | |
562 | val = E_MSP430_MACH_MSP430x11; | |
563 | break; | |
564 | ||
565 | case bfd_mach_msp13: | |
566 | val = E_MSP430_MACH_MSP430x13; | |
567 | break; | |
568 | ||
569 | case bfd_mach_msp14: | |
570 | val = E_MSP430_MACH_MSP430x14; | |
571 | break; | |
572 | ||
573 | case bfd_mach_msp41: | |
574 | val = E_MSP430_MACH_MSP430x41; | |
575 | break; | |
576 | ||
577 | case bfd_mach_msp43: | |
578 | val = E_MSP430_MACH_MSP430x43; | |
579 | break; | |
580 | ||
581 | case bfd_mach_msp44: | |
582 | val = E_MSP430_MACH_MSP430x44; | |
583 | break; | |
584 | ||
585 | case bfd_mach_msp31: | |
586 | val = E_MSP430_MACH_MSP430x31; | |
587 | break; | |
588 | ||
589 | case bfd_mach_msp32: | |
590 | val = E_MSP430_MACH_MSP430x32; | |
591 | break; | |
592 | ||
593 | case bfd_mach_msp33: | |
594 | val = E_MSP430_MACH_MSP430x33; | |
595 | break; | |
596 | ||
597 | case bfd_mach_msp15: | |
598 | val = E_MSP430_MACH_MSP430x15; | |
599 | break; | |
600 | ||
601 | case bfd_mach_msp16: | |
602 | val = E_MSP430_MACH_MSP430x16; | |
603 | break; | |
604 | } | |
605 | ||
606 | elf_elfheader (abfd)->e_machine = EM_MSP430; | |
607 | elf_elfheader (abfd)->e_flags &= ~EF_MSP430_MACH; | |
608 | elf_elfheader (abfd)->e_flags |= val; | |
609 | } | |
610 | ||
611 | /* Set the right machine number. */ | |
612 | ||
613 | static bfd_boolean | |
614 | elf32_msp430_object_p (abfd) | |
615 | bfd *abfd; | |
616 | { | |
617 | int e_set = bfd_mach_msp14; | |
618 | ||
619 | if (elf_elfheader (abfd)->e_machine == EM_MSP430 | |
620 | || elf_elfheader (abfd)->e_machine == EM_MSP430_OLD) | |
621 | { | |
622 | int e_mach = elf_elfheader (abfd)->e_flags & EF_MSP430_MACH; | |
623 | ||
624 | switch (e_mach) | |
625 | { | |
626 | default: | |
627 | case E_MSP430_MACH_MSP430x12: | |
628 | e_set = bfd_mach_msp12; | |
629 | break; | |
630 | ||
631 | case E_MSP430_MACH_MSP430x11: | |
632 | e_set = bfd_mach_msp11; | |
633 | break; | |
634 | ||
635 | case E_MSP430_MACH_MSP430x11x1: | |
636 | e_set = bfd_mach_msp110; | |
637 | break; | |
638 | ||
639 | case E_MSP430_MACH_MSP430x13: | |
640 | e_set = bfd_mach_msp13; | |
641 | break; | |
642 | ||
643 | case E_MSP430_MACH_MSP430x14: | |
644 | e_set = bfd_mach_msp14; | |
645 | break; | |
646 | ||
647 | case E_MSP430_MACH_MSP430x41: | |
648 | e_set = bfd_mach_msp41; | |
649 | break; | |
650 | ||
651 | case E_MSP430_MACH_MSP430x31: | |
652 | e_set = bfd_mach_msp31; | |
653 | break; | |
654 | ||
655 | case E_MSP430_MACH_MSP430x32: | |
656 | e_set = bfd_mach_msp32; | |
657 | break; | |
658 | ||
659 | case E_MSP430_MACH_MSP430x33: | |
660 | e_set = bfd_mach_msp33; | |
661 | break; | |
662 | ||
663 | case E_MSP430_MACH_MSP430x43: | |
664 | e_set = bfd_mach_msp43; | |
665 | break; | |
666 | ||
667 | case E_MSP430_MACH_MSP430x44: | |
668 | e_set = bfd_mach_msp44; | |
669 | break; | |
670 | ||
671 | case E_MSP430_MACH_MSP430x15: | |
672 | e_set = bfd_mach_msp15; | |
673 | break; | |
674 | ||
675 | case E_MSP430_MACH_MSP430x16: | |
676 | e_set = bfd_mach_msp16; | |
677 | break; | |
678 | } | |
679 | } | |
680 | ||
681 | return bfd_default_set_arch_mach (abfd, bfd_arch_msp430, e_set); | |
682 | } | |
683 | ||
684 | static void | |
685 | elf32_msp430_post_process_headers (abfd, link_info) | |
686 | bfd *abfd; | |
687 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
688 | { | |
689 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
690 | ||
691 | i_ehdrp = elf_elfheader (abfd); | |
692 | ||
693 | #ifndef ELFOSABI_STANDALONE | |
694 | #define ELFOSABI_STANDALONE 255 | |
695 | #endif | |
696 | ||
697 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE; | |
698 | } | |
699 | ||
700 | ||
701 | #define ELF_ARCH bfd_arch_msp430 | |
702 | #define ELF_MACHINE_CODE EM_MSP430 | |
703 | #define ELF_MACHINE_ALT1 EM_MSP430_OLD | |
704 | #define ELF_MAXPAGESIZE 1 | |
705 | ||
706 | #define TARGET_LITTLE_SYM bfd_elf32_msp430_vec | |
707 | #define TARGET_LITTLE_NAME "elf32-msp430" | |
708 | ||
709 | #define elf_info_to_howto msp430_info_to_howto_rela | |
710 | #define elf_info_to_howto_rel NULL | |
711 | #define elf_backend_relocate_section elf32_msp430_relocate_section | |
712 | #define elf_backend_gc_mark_hook elf32_msp430_gc_mark_hook | |
713 | #define elf_backend_gc_sweep_hook elf32_msp430_gc_sweep_hook | |
714 | #define elf_backend_check_relocs elf32_msp430_check_relocs | |
715 | #define elf_backend_can_gc_sections 1 | |
716 | #define elf_backend_final_write_processing bfd_elf_msp430_final_write_processing | |
717 | #define elf_backend_object_p elf32_msp430_object_p | |
718 | #define elf_backend_post_process_headers elf32_msp430_post_process_headers | |
719 | ||
720 | #include "elf32-target.h" |