| 1 | /* Morpho Technologies MT specific support for 32-bit ELF |
| 2 | Copyright 2001, 2002, 2003, 2004, 2005, 2006 |
| 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/mt.h" |
| 26 | |
| 27 | /* Prototypes. */ |
| 28 | static reloc_howto_type * mt_reloc_type_lookup |
| 29 | (bfd *, bfd_reloc_code_real_type); |
| 30 | |
| 31 | static void mt_info_to_howto_rela |
| 32 | (bfd *, arelent *, Elf_Internal_Rela *); |
| 33 | |
| 34 | static bfd_reloc_status_type mt_elf_relocate_hi16 |
| 35 | (bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma); |
| 36 | |
| 37 | static bfd_reloc_status_type mt_final_link_relocate |
| 38 | (reloc_howto_type *, bfd *, asection *, bfd_byte *, |
| 39 | Elf_Internal_Rela *, bfd_vma); |
| 40 | |
| 41 | static bfd_boolean mt_elf_relocate_section |
| 42 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 43 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); |
| 44 | |
| 45 | /* Relocation tables. */ |
| 46 | static reloc_howto_type mt_elf_howto_table [] = |
| 47 | { |
| 48 | /* This reloc does nothing. */ |
| 49 | HOWTO (R_MT_NONE, /* type */ |
| 50 | 0, /* rightshift */ |
| 51 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 52 | 32, /* bitsize */ |
| 53 | FALSE, /* pc_relative */ |
| 54 | 0, /* bitpos */ |
| 55 | complain_overflow_dont, /* complain_on_overflow */ |
| 56 | bfd_elf_generic_reloc, /* special_function */ |
| 57 | "R_MT_NONE", /* name */ |
| 58 | FALSE, /* partial_inplace */ |
| 59 | 0 , /* src_mask */ |
| 60 | 0, /* dst_mask */ |
| 61 | FALSE), /* pcrel_offset */ |
| 62 | |
| 63 | /* A 16 bit absolute relocation. */ |
| 64 | HOWTO (R_MT_16, /* type */ |
| 65 | 0, /* rightshift */ |
| 66 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 67 | 16, /* bitsize */ |
| 68 | FALSE, /* pc_relative */ |
| 69 | 0, /* bitpos */ |
| 70 | complain_overflow_dont, /* complain_on_overflow */ |
| 71 | bfd_elf_generic_reloc, /* special_function */ |
| 72 | "R_MT_16", /* name */ |
| 73 | FALSE, /* partial_inplace */ |
| 74 | 0 , /* src_mask */ |
| 75 | 0xffff, /* dst_mask */ |
| 76 | FALSE), /* pcrel_offset */ |
| 77 | |
| 78 | /* A 32 bit absolute relocation. */ |
| 79 | HOWTO (R_MT_32, /* type */ |
| 80 | 0, /* rightshift */ |
| 81 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 82 | 32, /* bitsize */ |
| 83 | FALSE, /* pc_relative */ |
| 84 | 0, /* bitpos */ |
| 85 | complain_overflow_dont, /* complain_on_overflow */ |
| 86 | bfd_elf_generic_reloc, /* special_function */ |
| 87 | "R_MT_32", /* name */ |
| 88 | FALSE, /* partial_inplace */ |
| 89 | 0 , /* src_mask */ |
| 90 | 0xffffffff, /* dst_mask */ |
| 91 | FALSE), /* pcrel_offset */ |
| 92 | |
| 93 | /* A 32 bit pc-relative relocation. */ |
| 94 | HOWTO (R_MT_32_PCREL, /* type */ |
| 95 | 0, /* rightshift */ |
| 96 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 97 | 32, /* bitsize */ |
| 98 | TRUE, /* pc_relative */ |
| 99 | 0, /* bitpos */ |
| 100 | complain_overflow_dont, /* complain_on_overflow */ |
| 101 | bfd_elf_generic_reloc, /* special_function */ |
| 102 | "R_MT_32_PCREL", /* name */ |
| 103 | FALSE, /* partial_inplace */ |
| 104 | 0 , /* src_mask */ |
| 105 | 0xffffffff, /* dst_mask */ |
| 106 | TRUE), /* pcrel_offset */ |
| 107 | |
| 108 | /* A 16 bit pc-relative relocation. */ |
| 109 | HOWTO (R_MT_PC16, /* type */ |
| 110 | 0, /* rightshift */ |
| 111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 112 | 16, /* bitsize */ |
| 113 | TRUE, /* pc_relative */ |
| 114 | 0, /* bitpos */ |
| 115 | complain_overflow_signed, /* complain_on_overflow */ |
| 116 | bfd_elf_generic_reloc, /* special_function */ |
| 117 | "R_MT_PC16", /* name */ |
| 118 | FALSE, /* partial_inplace */ |
| 119 | 0, /* src_mask */ |
| 120 | 0xffff, /* dst_mask */ |
| 121 | TRUE), /* pcrel_offset */ |
| 122 | |
| 123 | /* high 16 bits of symbol value. */ |
| 124 | HOWTO (R_MT_HI16, /* type */ |
| 125 | 0, /* rightshift */ |
| 126 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 127 | 16, /* bitsize */ |
| 128 | FALSE, /* pc_relative */ |
| 129 | 0, /* bitpos */ |
| 130 | complain_overflow_dont, /* complain_on_overflow */ |
| 131 | bfd_elf_generic_reloc, /* special_function */ |
| 132 | "R_MT_HI16", /* name */ |
| 133 | FALSE, /* partial_inplace */ |
| 134 | 0xffff0000, /* src_mask */ |
| 135 | 0xffff0000, /* dst_mask */ |
| 136 | FALSE), /* pcrel_offset */ |
| 137 | |
| 138 | /* Low 16 bits of symbol value. */ |
| 139 | HOWTO (R_MT_LO16, /* type */ |
| 140 | 0, /* rightshift */ |
| 141 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 142 | 16, /* bitsize */ |
| 143 | FALSE, /* pc_relative */ |
| 144 | 0, /* bitpos */ |
| 145 | complain_overflow_dont, /* complain_on_overflow */ |
| 146 | bfd_elf_generic_reloc, /* special_function */ |
| 147 | "R_MT_LO16", /* name */ |
| 148 | FALSE, /* partial_inplace */ |
| 149 | 0xffff, /* src_mask */ |
| 150 | 0xffff, /* dst_mask */ |
| 151 | FALSE), /* pcrel_offset */ |
| 152 | }; |
| 153 | |
| 154 | /* Map BFD reloc types to MT ELF reloc types. */ |
| 155 | |
| 156 | static reloc_howto_type * |
| 157 | mt_reloc_type_lookup |
| 158 | (bfd * abfd ATTRIBUTE_UNUSED, |
| 159 | bfd_reloc_code_real_type code) |
| 160 | { |
| 161 | /* Note that the mt_elf_howto_table is indxed by the R_ |
| 162 | constants. Thus, the order that the howto records appear in the |
| 163 | table *must* match the order of the relocation types defined in |
| 164 | include/elf/mt.h. */ |
| 165 | |
| 166 | switch (code) |
| 167 | { |
| 168 | case BFD_RELOC_NONE: |
| 169 | return &mt_elf_howto_table[ (int) R_MT_NONE]; |
| 170 | case BFD_RELOC_16: |
| 171 | return &mt_elf_howto_table[ (int) R_MT_16]; |
| 172 | case BFD_RELOC_32: |
| 173 | return &mt_elf_howto_table[ (int) R_MT_32]; |
| 174 | case BFD_RELOC_32_PCREL: |
| 175 | return &mt_elf_howto_table[ (int) R_MT_32_PCREL]; |
| 176 | case BFD_RELOC_16_PCREL: |
| 177 | return &mt_elf_howto_table[ (int) R_MT_PC16]; |
| 178 | case BFD_RELOC_HI16: |
| 179 | return &mt_elf_howto_table[ (int) R_MT_HI16]; |
| 180 | case BFD_RELOC_LO16: |
| 181 | return &mt_elf_howto_table[ (int) R_MT_LO16]; |
| 182 | |
| 183 | default: |
| 184 | /* Pacify gcc -Wall. */ |
| 185 | return NULL; |
| 186 | } |
| 187 | return NULL; |
| 188 | } |
| 189 | |
| 190 | bfd_reloc_status_type |
| 191 | mt_elf_relocate_hi16 |
| 192 | (bfd * input_bfd, |
| 193 | Elf_Internal_Rela * relhi, |
| 194 | bfd_byte * contents, |
| 195 | bfd_vma value) |
| 196 | { |
| 197 | bfd_vma insn; |
| 198 | |
| 199 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| 200 | |
| 201 | value += relhi->r_addend; |
| 202 | value >>= 16; |
| 203 | insn = ((insn & ~0xFFFF) | value); |
| 204 | |
| 205 | bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); |
| 206 | return bfd_reloc_ok; |
| 207 | } |
| 208 | \f |
| 209 | /* XXX: The following code is the result of a cut&paste. This unfortunate |
| 210 | practice is very widespread in the various target back-end files. */ |
| 211 | |
| 212 | /* Set the howto pointer for a MT ELF reloc. */ |
| 213 | |
| 214 | static void |
| 215 | mt_info_to_howto_rela |
| 216 | (bfd * abfd ATTRIBUTE_UNUSED, |
| 217 | arelent * cache_ptr, |
| 218 | Elf_Internal_Rela * dst) |
| 219 | { |
| 220 | unsigned int r_type; |
| 221 | |
| 222 | r_type = ELF32_R_TYPE (dst->r_info); |
| 223 | cache_ptr->howto = & mt_elf_howto_table [r_type]; |
| 224 | } |
| 225 | |
| 226 | /* Perform a single relocation. By default we use the standard BFD |
| 227 | routines. */ |
| 228 | |
| 229 | static bfd_reloc_status_type |
| 230 | mt_final_link_relocate |
| 231 | (reloc_howto_type * howto, |
| 232 | bfd * input_bfd, |
| 233 | asection * input_section, |
| 234 | bfd_byte * contents, |
| 235 | Elf_Internal_Rela * rel, |
| 236 | bfd_vma relocation) |
| 237 | { |
| 238 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 239 | contents, rel->r_offset, |
| 240 | relocation, rel->r_addend); |
| 241 | } |
| 242 | |
| 243 | /* Relocate a MT ELF section. |
| 244 | There is some attempt to make this function usable for many architectures, |
| 245 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], |
| 246 | if only to serve as a learning tool. |
| 247 | |
| 248 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 249 | to handle the relocations for a section. |
| 250 | |
| 251 | The relocs are always passed as Rela structures; if the section |
| 252 | actually uses Rel structures, the r_addend field will always be |
| 253 | zero. |
| 254 | |
| 255 | This function is responsible for adjusting the section contents as |
| 256 | necessary, and (if using Rela relocs and generating a relocatable |
| 257 | output file) adjusting the reloc addend as necessary. |
| 258 | |
| 259 | This function does not have to worry about setting the reloc |
| 260 | address or the reloc symbol index. |
| 261 | |
| 262 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 263 | |
| 264 | LOCAL_SECTIONS is an array giving the section in the input file |
| 265 | corresponding to the st_shndx field of each local symbol. |
| 266 | |
| 267 | The global hash table entry for the global symbols can be found |
| 268 | via elf_sym_hashes (input_bfd). |
| 269 | |
| 270 | When generating relocatable output, this function must handle |
| 271 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 272 | going to be the section symbol corresponding to the output |
| 273 | section, which means that the addend must be adjusted |
| 274 | accordingly. */ |
| 275 | |
| 276 | static bfd_boolean |
| 277 | mt_elf_relocate_section |
| 278 | (bfd * output_bfd ATTRIBUTE_UNUSED, |
| 279 | struct bfd_link_info * info, |
| 280 | bfd * input_bfd, |
| 281 | asection * input_section, |
| 282 | bfd_byte * contents, |
| 283 | Elf_Internal_Rela * relocs, |
| 284 | Elf_Internal_Sym * local_syms, |
| 285 | asection ** local_sections) |
| 286 | { |
| 287 | Elf_Internal_Shdr * symtab_hdr; |
| 288 | struct elf_link_hash_entry ** sym_hashes; |
| 289 | Elf_Internal_Rela * rel; |
| 290 | Elf_Internal_Rela * relend; |
| 291 | |
| 292 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 293 | sym_hashes = elf_sym_hashes (input_bfd); |
| 294 | relend = relocs + input_section->reloc_count; |
| 295 | |
| 296 | for (rel = relocs; rel < relend; rel ++) |
| 297 | { |
| 298 | reloc_howto_type * howto; |
| 299 | unsigned long r_symndx; |
| 300 | Elf_Internal_Sym * sym; |
| 301 | asection * sec; |
| 302 | struct elf_link_hash_entry * h; |
| 303 | bfd_vma relocation; |
| 304 | bfd_reloc_status_type r; |
| 305 | const char * name = NULL; |
| 306 | int r_type; |
| 307 | |
| 308 | r_type = ELF32_R_TYPE (rel->r_info); |
| 309 | |
| 310 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 311 | |
| 312 | /* This is a final link. */ |
| 313 | howto = mt_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
| 314 | h = NULL; |
| 315 | sym = NULL; |
| 316 | sec = NULL; |
| 317 | |
| 318 | if (r_symndx < symtab_hdr->sh_info) |
| 319 | { |
| 320 | sym = local_syms + r_symndx; |
| 321 | sec = local_sections [r_symndx]; |
| 322 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 323 | |
| 324 | name = bfd_elf_string_from_elf_section |
| 325 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 326 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 327 | } |
| 328 | else |
| 329 | { |
| 330 | bfd_boolean unresolved_reloc; |
| 331 | bfd_boolean warned; |
| 332 | |
| 333 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 334 | r_symndx, symtab_hdr, sym_hashes, |
| 335 | h, sec, relocation, |
| 336 | unresolved_reloc, warned); |
| 337 | |
| 338 | name = h->root.root.string; |
| 339 | } |
| 340 | |
| 341 | |
| 342 | /* Finally, the sole MT-specific part. */ |
| 343 | switch (r_type) |
| 344 | { |
| 345 | case R_MT_HI16: |
| 346 | r = mt_elf_relocate_hi16 (input_bfd, rel, contents, relocation); |
| 347 | break; |
| 348 | default: |
| 349 | r = mt_final_link_relocate (howto, input_bfd, input_section, |
| 350 | contents, rel, relocation); |
| 351 | break; |
| 352 | } |
| 353 | |
| 354 | |
| 355 | if (r != bfd_reloc_ok) |
| 356 | { |
| 357 | const char * msg = (const char *) NULL; |
| 358 | |
| 359 | switch (r) |
| 360 | { |
| 361 | case bfd_reloc_overflow: |
| 362 | r = info->callbacks->reloc_overflow |
| 363 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, |
| 364 | input_bfd, input_section, rel->r_offset); |
| 365 | break; |
| 366 | |
| 367 | case bfd_reloc_undefined: |
| 368 | r = info->callbacks->undefined_symbol |
| 369 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 370 | break; |
| 371 | |
| 372 | case bfd_reloc_outofrange: |
| 373 | msg = _("internal error: out of range error"); |
| 374 | break; |
| 375 | |
| 376 | case bfd_reloc_dangerous: |
| 377 | msg = _("internal error: dangerous relocation"); |
| 378 | break; |
| 379 | |
| 380 | default: |
| 381 | msg = _("internal error: unknown error"); |
| 382 | break; |
| 383 | } |
| 384 | |
| 385 | if (msg) |
| 386 | r = info->callbacks->warning |
| 387 | (info, msg, name, input_bfd, input_section, rel->r_offset); |
| 388 | |
| 389 | if (! r) |
| 390 | return FALSE; |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | return TRUE; |
| 395 | } |
| 396 | |
| 397 | /* Look through the relocs for a section during the first phase. |
| 398 | Since we don't do .gots or .plts, we just need to consider the |
| 399 | virtual table relocs for gc. */ |
| 400 | |
| 401 | static bfd_boolean |
| 402 | mt_elf_check_relocs |
| 403 | (bfd * abfd, |
| 404 | struct bfd_link_info * info, |
| 405 | asection * sec, |
| 406 | const Elf_Internal_Rela * relocs) |
| 407 | { |
| 408 | Elf_Internal_Shdr * symtab_hdr; |
| 409 | struct elf_link_hash_entry ** sym_hashes; |
| 410 | struct elf_link_hash_entry ** sym_hashes_end; |
| 411 | const Elf_Internal_Rela * rel; |
| 412 | const Elf_Internal_Rela * rel_end; |
| 413 | |
| 414 | if (info->relocatable) |
| 415 | return TRUE; |
| 416 | |
| 417 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 418 | sym_hashes = elf_sym_hashes (abfd); |
| 419 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
| 420 | if (!elf_bad_symtab (abfd)) |
| 421 | sym_hashes_end -= symtab_hdr->sh_info; |
| 422 | |
| 423 | rel_end = relocs + sec->reloc_count; |
| 424 | for (rel = relocs; rel < rel_end; rel++) |
| 425 | { |
| 426 | struct elf_link_hash_entry *h; |
| 427 | unsigned long r_symndx; |
| 428 | |
| 429 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 430 | if (r_symndx < symtab_hdr->sh_info) |
| 431 | h = NULL; |
| 432 | else |
| 433 | { |
| 434 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 435 | while (h->root.type == bfd_link_hash_indirect |
| 436 | || h->root.type == bfd_link_hash_warning) |
| 437 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | return TRUE; |
| 442 | } |
| 443 | |
| 444 | /* Return the MACH for an e_flags value. */ |
| 445 | |
| 446 | static int |
| 447 | elf32_mt_machine (bfd *abfd) |
| 448 | { |
| 449 | switch (elf_elfheader (abfd)->e_flags & EF_MT_CPU_MASK) |
| 450 | { |
| 451 | case EF_MT_CPU_MRISC: return bfd_mach_ms1; |
| 452 | case EF_MT_CPU_MRISC2: return bfd_mach_mrisc2; |
| 453 | case EF_MT_CPU_MS2: return bfd_mach_ms2; |
| 454 | } |
| 455 | |
| 456 | return bfd_mach_ms1; |
| 457 | } |
| 458 | |
| 459 | static bfd_boolean |
| 460 | mt_elf_object_p (bfd * abfd) |
| 461 | { |
| 462 | bfd_default_set_arch_mach (abfd, bfd_arch_mt, elf32_mt_machine (abfd)); |
| 463 | |
| 464 | return TRUE; |
| 465 | } |
| 466 | |
| 467 | /* Function to set the ELF flag bits. */ |
| 468 | |
| 469 | static bfd_boolean |
| 470 | mt_elf_set_private_flags (bfd * abfd, |
| 471 | flagword flags) |
| 472 | { |
| 473 | elf_elfheader (abfd)->e_flags = flags; |
| 474 | elf_flags_init (abfd) = TRUE; |
| 475 | return TRUE; |
| 476 | } |
| 477 | |
| 478 | static bfd_boolean |
| 479 | mt_elf_copy_private_bfd_data (bfd * ibfd, bfd * obfd) |
| 480 | { |
| 481 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 482 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 483 | return TRUE; |
| 484 | |
| 485 | BFD_ASSERT (!elf_flags_init (obfd) |
| 486 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); |
| 487 | |
| 488 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| 489 | elf_flags_init (obfd) = TRUE; |
| 490 | return TRUE; |
| 491 | } |
| 492 | |
| 493 | /* Merge backend specific data from an object file to the output |
| 494 | object file when linking. */ |
| 495 | |
| 496 | static bfd_boolean |
| 497 | mt_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
| 498 | { |
| 499 | flagword old_flags, new_flags; |
| 500 | bfd_boolean ok = TRUE; |
| 501 | |
| 502 | /* Check if we have the same endianess. */ |
| 503 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) |
| 504 | return FALSE; |
| 505 | |
| 506 | /* If they're not both mt, then merging is meaningless, so just |
| 507 | don't do it. */ |
| 508 | if (strcmp (ibfd->arch_info->arch_name, "mt") != 0) |
| 509 | return TRUE; |
| 510 | if (strcmp (obfd->arch_info->arch_name, "mt") != 0) |
| 511 | return TRUE; |
| 512 | |
| 513 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 514 | old_flags = elf_elfheader (obfd)->e_flags; |
| 515 | |
| 516 | #ifdef DEBUG |
| 517 | _bfd_error_handler ("%B: old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s", |
| 518 | ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no"); |
| 519 | #endif |
| 520 | |
| 521 | if (!elf_flags_init (obfd)) |
| 522 | { |
| 523 | old_flags = new_flags; |
| 524 | elf_flags_init (obfd) = TRUE; |
| 525 | } |
| 526 | else if ((new_flags & EF_MT_CPU_MASK) != (old_flags & EF_MT_CPU_MASK)) |
| 527 | { |
| 528 | /* CPU has changed. This is invalid, because MRISC, MRISC2 and |
| 529 | MS2 are not subsets of each other. */ |
| 530 | ok = FALSE; |
| 531 | } |
| 532 | |
| 533 | if (ok) |
| 534 | { |
| 535 | obfd->arch_info = ibfd->arch_info; |
| 536 | elf_elfheader (obfd)->e_flags = old_flags; |
| 537 | } |
| 538 | |
| 539 | return ok; |
| 540 | } |
| 541 | |
| 542 | static bfd_boolean |
| 543 | mt_elf_print_private_bfd_data (bfd * abfd, void * ptr) |
| 544 | { |
| 545 | FILE * file = (FILE *) ptr; |
| 546 | flagword flags; |
| 547 | |
| 548 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 549 | |
| 550 | /* Print normal ELF private data. */ |
| 551 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 552 | |
| 553 | flags = elf_elfheader (abfd)->e_flags; |
| 554 | fprintf (file, _("private flags = 0x%lx:"), (long)flags); |
| 555 | |
| 556 | switch (flags & EF_MT_CPU_MASK) |
| 557 | { |
| 558 | default: |
| 559 | case EF_MT_CPU_MRISC: fprintf (file, " ms1-16-002"); break; |
| 560 | case EF_MT_CPU_MRISC2: fprintf (file, " ms1-16-003"); break; |
| 561 | case EF_MT_CPU_MS2: fprintf (file, " ms2"); break; |
| 562 | } |
| 563 | |
| 564 | fputc ('\n', file); |
| 565 | |
| 566 | return TRUE; |
| 567 | } |
| 568 | |
| 569 | \f |
| 570 | #define TARGET_BIG_SYM bfd_elf32_mt_vec |
| 571 | #define TARGET_BIG_NAME "elf32-mt" |
| 572 | |
| 573 | #define ELF_ARCH bfd_arch_mt |
| 574 | #define ELF_MACHINE_CODE EM_MT |
| 575 | #define ELF_MAXPAGESIZE 1 /* No pages on the MT. */ |
| 576 | |
| 577 | #define elf_info_to_howto_rel NULL |
| 578 | #define elf_info_to_howto mt_info_to_howto_rela |
| 579 | |
| 580 | #define elf_backend_relocate_section mt_elf_relocate_section |
| 581 | |
| 582 | #define bfd_elf32_bfd_reloc_type_lookup mt_reloc_type_lookup |
| 583 | |
| 584 | #define elf_backend_check_relocs mt_elf_check_relocs |
| 585 | #define elf_backend_object_p mt_elf_object_p |
| 586 | #define elf_backend_rela_normal 1 |
| 587 | |
| 588 | #define elf_backend_can_gc_sections 1 |
| 589 | |
| 590 | #define bfd_elf32_bfd_set_private_flags mt_elf_set_private_flags |
| 591 | #define bfd_elf32_bfd_copy_private_bfd_data mt_elf_copy_private_bfd_data |
| 592 | #define bfd_elf32_bfd_merge_private_bfd_data mt_elf_merge_private_bfd_data |
| 593 | #define bfd_elf32_bfd_print_private_bfd_data mt_elf_print_private_bfd_data |
| 594 | |
| 595 | #include "elf32-target.h" |