| 1 | /* MSP430-specific support for 32-bit ELF |
| 2 | Copyright (C) 2002, 2003 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->relocatable) |
| 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_msp110: |
| 554 | val = E_MSP430_MACH_MSP430x11x1; |
| 555 | break; |
| 556 | |
| 557 | case bfd_mach_msp11: |
| 558 | val = E_MSP430_MACH_MSP430x11; |
| 559 | break; |
| 560 | |
| 561 | case bfd_mach_msp12: |
| 562 | val = E_MSP430_MACH_MSP430x12; |
| 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_msp15: |
| 574 | val = E_MSP430_MACH_MSP430x15; |
| 575 | break; |
| 576 | |
| 577 | case bfd_mach_msp16: |
| 578 | val = E_MSP430_MACH_MSP430x16; |
| 579 | break; |
| 580 | |
| 581 | case bfd_mach_msp31: |
| 582 | val = E_MSP430_MACH_MSP430x31; |
| 583 | break; |
| 584 | |
| 585 | case bfd_mach_msp32: |
| 586 | val = E_MSP430_MACH_MSP430x32; |
| 587 | break; |
| 588 | |
| 589 | case bfd_mach_msp33: |
| 590 | val = E_MSP430_MACH_MSP430x33; |
| 591 | break; |
| 592 | |
| 593 | case bfd_mach_msp41: |
| 594 | val = E_MSP430_MACH_MSP430x41; |
| 595 | break; |
| 596 | |
| 597 | case bfd_mach_msp42: |
| 598 | val = E_MSP430_MACH_MSP430x42; |
| 599 | break; |
| 600 | |
| 601 | case bfd_mach_msp43: |
| 602 | val = E_MSP430_MACH_MSP430x43; |
| 603 | break; |
| 604 | |
| 605 | case bfd_mach_msp44: |
| 606 | val = E_MSP430_MACH_MSP430x44; |
| 607 | break; |
| 608 | } |
| 609 | |
| 610 | elf_elfheader (abfd)->e_machine = EM_MSP430; |
| 611 | elf_elfheader (abfd)->e_flags &= ~EF_MSP430_MACH; |
| 612 | elf_elfheader (abfd)->e_flags |= val; |
| 613 | } |
| 614 | |
| 615 | /* Set the right machine number. */ |
| 616 | |
| 617 | static bfd_boolean |
| 618 | elf32_msp430_object_p (abfd) |
| 619 | bfd *abfd; |
| 620 | { |
| 621 | int e_set = bfd_mach_msp14; |
| 622 | |
| 623 | if (elf_elfheader (abfd)->e_machine == EM_MSP430 |
| 624 | || elf_elfheader (abfd)->e_machine == EM_MSP430_OLD) |
| 625 | { |
| 626 | int e_mach = elf_elfheader (abfd)->e_flags & EF_MSP430_MACH; |
| 627 | |
| 628 | switch (e_mach) |
| 629 | { |
| 630 | default: |
| 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_MSP430x12: |
| 640 | e_set = bfd_mach_msp12; |
| 641 | break; |
| 642 | |
| 643 | case E_MSP430_MACH_MSP430x13: |
| 644 | e_set = bfd_mach_msp13; |
| 645 | break; |
| 646 | |
| 647 | case E_MSP430_MACH_MSP430x14: |
| 648 | e_set = bfd_mach_msp14; |
| 649 | break; |
| 650 | |
| 651 | case E_MSP430_MACH_MSP430x15: |
| 652 | e_set = bfd_mach_msp15; |
| 653 | break; |
| 654 | |
| 655 | case E_MSP430_MACH_MSP430x16: |
| 656 | e_set = bfd_mach_msp16; |
| 657 | break; |
| 658 | |
| 659 | case E_MSP430_MACH_MSP430x31: |
| 660 | e_set = bfd_mach_msp31; |
| 661 | break; |
| 662 | |
| 663 | case E_MSP430_MACH_MSP430x32: |
| 664 | e_set = bfd_mach_msp32; |
| 665 | break; |
| 666 | |
| 667 | case E_MSP430_MACH_MSP430x33: |
| 668 | e_set = bfd_mach_msp33; |
| 669 | break; |
| 670 | |
| 671 | case E_MSP430_MACH_MSP430x41: |
| 672 | e_set = bfd_mach_msp41; |
| 673 | break; |
| 674 | |
| 675 | case E_MSP430_MACH_MSP430x42: |
| 676 | e_set = bfd_mach_msp42; |
| 677 | break; |
| 678 | |
| 679 | case E_MSP430_MACH_MSP430x43: |
| 680 | e_set = bfd_mach_msp43; |
| 681 | break; |
| 682 | |
| 683 | case E_MSP430_MACH_MSP430x44: |
| 684 | e_set = bfd_mach_msp44; |
| 685 | break; |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | return bfd_default_set_arch_mach (abfd, bfd_arch_msp430, e_set); |
| 690 | } |
| 691 | |
| 692 | static void |
| 693 | elf32_msp430_post_process_headers (abfd, link_info) |
| 694 | bfd *abfd; |
| 695 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
| 696 | { |
| 697 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ |
| 698 | |
| 699 | i_ehdrp = elf_elfheader (abfd); |
| 700 | |
| 701 | #ifndef ELFOSABI_STANDALONE |
| 702 | #define ELFOSABI_STANDALONE 255 |
| 703 | #endif |
| 704 | |
| 705 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE; |
| 706 | } |
| 707 | |
| 708 | |
| 709 | #define ELF_ARCH bfd_arch_msp430 |
| 710 | #define ELF_MACHINE_CODE EM_MSP430 |
| 711 | #define ELF_MACHINE_ALT1 EM_MSP430_OLD |
| 712 | #define ELF_MAXPAGESIZE 1 |
| 713 | |
| 714 | #define TARGET_LITTLE_SYM bfd_elf32_msp430_vec |
| 715 | #define TARGET_LITTLE_NAME "elf32-msp430" |
| 716 | |
| 717 | #define elf_info_to_howto msp430_info_to_howto_rela |
| 718 | #define elf_info_to_howto_rel NULL |
| 719 | #define elf_backend_relocate_section elf32_msp430_relocate_section |
| 720 | #define elf_backend_gc_mark_hook elf32_msp430_gc_mark_hook |
| 721 | #define elf_backend_gc_sweep_hook elf32_msp430_gc_sweep_hook |
| 722 | #define elf_backend_check_relocs elf32_msp430_check_relocs |
| 723 | #define elf_backend_can_gc_sections 1 |
| 724 | #define elf_backend_final_write_processing bfd_elf_msp430_final_write_processing |
| 725 | #define elf_backend_object_p elf32_msp430_object_p |
| 726 | #define elf_backend_post_process_headers elf32_msp430_post_process_headers |
| 727 | |
| 728 | #include "elf32-target.h" |