| 1 | /* BFD back-end for Motorola MCore COFF/PE |
| 2 | Copyright (C) 1999-2014 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, 51 Franklin Street - Fifth Floor, |
| 19 | Boston, MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "coff/mcore.h" |
| 25 | #include "coff/internal.h" |
| 26 | #include "coff/pe.h" |
| 27 | #include "libcoff.h" |
| 28 | |
| 29 | #ifdef BADMAG |
| 30 | #undef BADMAG |
| 31 | #endif |
| 32 | #define BADMAG(x) MCOREBADMAG(x) |
| 33 | |
| 34 | #ifndef NUM_ELEM |
| 35 | #define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0]) |
| 36 | #endif |
| 37 | |
| 38 | /* This file is compiled more than once, but we only compile the |
| 39 | final_link routine once. */ |
| 40 | extern bfd_boolean mcore_bfd_coff_final_link |
| 41 | (bfd *, struct bfd_link_info *); |
| 42 | static bfd_reloc_status_type mcore_coff_unsupported_reloc |
| 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 44 | |
| 45 | \f |
| 46 | /* The NT loader points the toc register to &toc + 32768, in order to |
| 47 | use the complete range of a 16-bit displacement. We have to adjust |
| 48 | for this when we fix up loads displaced off the toc reg. */ |
| 49 | #define TOC_LOAD_ADJUSTMENT (-32768) |
| 50 | #define TOC_SECTION_NAME ".private.toc" |
| 51 | |
| 52 | /* The main body of code is in coffcode.h. */ |
| 53 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2 |
| 54 | |
| 55 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
| 56 | from smaller values. Start with zero, widen, *then* decrement. */ |
| 57 | #define MINUS_ONE (((bfd_vma)0) - 1) |
| 58 | \f |
| 59 | static reloc_howto_type mcore_coff_howto_table[] = |
| 60 | { |
| 61 | /* Unused: */ |
| 62 | HOWTO (IMAGE_REL_MCORE_ABSOLUTE,/* type */ |
| 63 | 0, /* rightshift */ |
| 64 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 65 | 0, /* bitsize */ |
| 66 | FALSE, /* pc_relative */ |
| 67 | 0, /* bitpos */ |
| 68 | complain_overflow_dont, /* dont complain_on_overflow */ |
| 69 | NULL, /* special_function */ |
| 70 | "ABSOLUTE", /* name */ |
| 71 | FALSE, /* partial_inplace */ |
| 72 | 0x00, /* src_mask */ |
| 73 | 0x00, /* dst_mask */ |
| 74 | FALSE), /* pcrel_offset */ |
| 75 | |
| 76 | HOWTO (IMAGE_REL_MCORE_ADDR32,/* type */ |
| 77 | 0, /* rightshift */ |
| 78 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 79 | 32, /* bitsize */ |
| 80 | FALSE, /* pc_relative */ |
| 81 | 0, /* bitpos */ |
| 82 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 83 | NULL, /* special_function */ |
| 84 | "ADDR32", /* name */ |
| 85 | TRUE, /* partial_inplace */ |
| 86 | 0xffffffff, /* src_mask */ |
| 87 | 0xffffffff, /* dst_mask */ |
| 88 | FALSE), /* pcrel_offset */ |
| 89 | |
| 90 | /* 8 bits + 2 zero bits; jmpi/jsri/lrw instructions. |
| 91 | Should not appear in object files. */ |
| 92 | HOWTO (IMAGE_REL_MCORE_PCREL_IMM8BY4, /* type */ |
| 93 | 2, /* rightshift */ |
| 94 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 95 | 8, /* bitsize */ |
| 96 | TRUE, /* pc_relative */ |
| 97 | 0, /* bitpos */ |
| 98 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 99 | mcore_coff_unsupported_reloc, /* special_function */ |
| 100 | "IMM8BY4", /* name */ |
| 101 | FALSE, /* partial_inplace */ |
| 102 | 0, /* src_mask */ |
| 103 | 0, /* dst_mask */ |
| 104 | TRUE), /* pcrel_offset */ |
| 105 | |
| 106 | /* bsr/bt/bf/br instructions; 11 bits + 1 zero bit |
| 107 | Span 2k instructions == 4k bytes. |
| 108 | Only useful pieces at the relocated address are the opcode (5 bits) */ |
| 109 | HOWTO (IMAGE_REL_MCORE_PCREL_IMM11BY2,/* type */ |
| 110 | 1, /* rightshift */ |
| 111 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 112 | 11, /* bitsize */ |
| 113 | TRUE, /* pc_relative */ |
| 114 | 0, /* bitpos */ |
| 115 | complain_overflow_signed, /* complain_on_overflow */ |
| 116 | NULL, /* special_function */ |
| 117 | "IMM11BY2", /* name */ |
| 118 | FALSE, /* partial_inplace */ |
| 119 | 0x0, /* src_mask */ |
| 120 | 0x7ff, /* dst_mask */ |
| 121 | TRUE), /* pcrel_offset */ |
| 122 | |
| 123 | /* 4 bits + 1 zero bit; 'loopt' instruction only; unsupported. */ |
| 124 | HOWTO (IMAGE_REL_MCORE_PCREL_IMM4BY2, /* type */ |
| 125 | 1, /* rightshift */ |
| 126 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 127 | 4, /* bitsize */ |
| 128 | TRUE, /* pc_relative */ |
| 129 | 0, /* bitpos */ |
| 130 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 131 | mcore_coff_unsupported_reloc, /* special_function */ |
| 132 | "IMM4BY2", /* name */ |
| 133 | FALSE, /* partial_inplace */ |
| 134 | 0, /* src_mask */ |
| 135 | 0, /* dst_mask */ |
| 136 | TRUE), /* pcrel_offset */ |
| 137 | |
| 138 | /* 32-bit pc-relative. Eventually this will help support PIC code. */ |
| 139 | HOWTO (IMAGE_REL_MCORE_PCREL_32,/* type */ |
| 140 | 0, /* rightshift */ |
| 141 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 142 | 32, /* bitsize */ |
| 143 | TRUE, /* pc_relative */ |
| 144 | 0, /* bitpos */ |
| 145 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 146 | NULL, /* special_function */ |
| 147 | "PCREL_32", /* name */ |
| 148 | FALSE, /* partial_inplace */ |
| 149 | 0x0, /* src_mask */ |
| 150 | 0xffffffff, /* dst_mask */ |
| 151 | TRUE), /* pcrel_offset */ |
| 152 | |
| 153 | /* Like PCREL_IMM11BY2, this relocation indicates that there is a |
| 154 | 'jsri' at the specified address. There is a separate relocation |
| 155 | entry for the literal pool entry that it references, but we |
| 156 | might be able to change the jsri to a bsr if the target turns out |
| 157 | to be close enough [even though we won't reclaim the literal pool |
| 158 | entry, we'll get some runtime efficiency back]. Note that this |
| 159 | is a relocation that we are allowed to safely ignore. */ |
| 160 | HOWTO (IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2,/* type */ |
| 161 | 1, /* rightshift */ |
| 162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 163 | 11, /* bitsize */ |
| 164 | TRUE, /* pc_relative */ |
| 165 | 0, /* bitpos */ |
| 166 | complain_overflow_signed, /* complain_on_overflow */ |
| 167 | NULL, /* special_function */ |
| 168 | "JSR_IMM11BY2", /* name */ |
| 169 | FALSE, /* partial_inplace */ |
| 170 | 0x0, /* src_mask */ |
| 171 | 0x7ff, /* dst_mask */ |
| 172 | TRUE), /* pcrel_offset */ |
| 173 | |
| 174 | HOWTO (IMAGE_REL_MCORE_RVA, /* type */ |
| 175 | 0, /* rightshift */ |
| 176 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 177 | 32, /* bitsize */ |
| 178 | FALSE, /* pc_relative */ |
| 179 | 0, /* bitpos */ |
| 180 | complain_overflow_signed, /* complain_on_overflow */ |
| 181 | NULL, /* special_function */ |
| 182 | "MCORE_RVA", /* name */ |
| 183 | TRUE, /* partial_inplace */ |
| 184 | 0xffffffff, /* src_mask */ |
| 185 | 0xffffffff, /* dst_mask */ |
| 186 | TRUE) /* pcrel_offset */ |
| 187 | }; |
| 188 | \f |
| 189 | /* Extend the coff_link_hash_table structure with a few M*Core specific fields. |
| 190 | This allows us to store global data here without actually creating any |
| 191 | global variables, which is a no-no in the BFD world. */ |
| 192 | typedef struct coff_mcore_link_hash_table |
| 193 | { |
| 194 | /* The original coff_link_hash_table structure. MUST be first field. */ |
| 195 | struct coff_link_hash_table root; |
| 196 | |
| 197 | bfd * bfd_of_toc_owner; |
| 198 | long int global_toc_size; |
| 199 | long int import_table_size; |
| 200 | long int first_thunk_address; |
| 201 | long int thunk_size; |
| 202 | } |
| 203 | mcore_hash_table; |
| 204 | |
| 205 | /* Get the MCore coff linker hash table from a link_info structure. */ |
| 206 | #define coff_mcore_hash_table(info) \ |
| 207 | ((mcore_hash_table *) ((info)->hash)) |
| 208 | |
| 209 | \f |
| 210 | /* Add an entry to the base file. */ |
| 211 | |
| 212 | static bfd_boolean |
| 213 | mcore_emit_base_file_entry (struct bfd_link_info *info, |
| 214 | bfd *output_bfd, |
| 215 | asection *input_section, |
| 216 | bfd_vma reloc_offset) |
| 217 | { |
| 218 | bfd_vma addr = reloc_offset |
| 219 | - input_section->vma |
| 220 | + input_section->output_offset |
| 221 | + input_section->output_section->vma; |
| 222 | |
| 223 | if (coff_data (output_bfd)->pe) |
| 224 | addr -= pe_data (output_bfd)->pe_opthdr.ImageBase; |
| 225 | |
| 226 | if (fwrite (&addr, sizeof (addr), 1, (FILE *) info->base_file) == 1) |
| 227 | return TRUE; |
| 228 | |
| 229 | bfd_set_error (bfd_error_system_call); |
| 230 | return FALSE; |
| 231 | } |
| 232 | \f |
| 233 | static bfd_reloc_status_type |
| 234 | mcore_coff_unsupported_reloc (bfd * abfd, |
| 235 | arelent * reloc_entry, |
| 236 | asymbol * symbol ATTRIBUTE_UNUSED, |
| 237 | void * data ATTRIBUTE_UNUSED, |
| 238 | asection * input_section ATTRIBUTE_UNUSED, |
| 239 | bfd * output_bfd ATTRIBUTE_UNUSED, |
| 240 | char ** error_message ATTRIBUTE_UNUSED) |
| 241 | { |
| 242 | BFD_ASSERT (reloc_entry->howto != (reloc_howto_type *)0); |
| 243 | |
| 244 | _bfd_error_handler (_("%B: Relocation %s (%d) is not currently supported.\n"), |
| 245 | abfd, |
| 246 | reloc_entry->howto->name, |
| 247 | reloc_entry->howto->type); |
| 248 | |
| 249 | return bfd_reloc_notsupported; |
| 250 | } |
| 251 | \f |
| 252 | /* A cheesy little macro to make the code a little more readable. */ |
| 253 | #define HOW2MAP(bfd_rtype, mcore_rtype) \ |
| 254 | case bfd_rtype: return & mcore_coff_howto_table [mcore_rtype] |
| 255 | |
| 256 | static reloc_howto_type * |
| 257 | mcore_coff_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
| 258 | bfd_reloc_code_real_type code) |
| 259 | { |
| 260 | switch (code) |
| 261 | { |
| 262 | HOW2MAP (BFD_RELOC_32, IMAGE_REL_MCORE_ADDR32); |
| 263 | HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM8BY4, IMAGE_REL_MCORE_PCREL_IMM8BY4); |
| 264 | HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM11BY2, IMAGE_REL_MCORE_PCREL_IMM11BY2); |
| 265 | HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM4BY2, IMAGE_REL_MCORE_PCREL_IMM4BY2); |
| 266 | HOW2MAP (BFD_RELOC_32_PCREL, IMAGE_REL_MCORE_PCREL_32); |
| 267 | HOW2MAP (BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2, IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2); |
| 268 | HOW2MAP (BFD_RELOC_RVA, IMAGE_REL_MCORE_RVA); |
| 269 | default: |
| 270 | return NULL; |
| 271 | } |
| 272 | /*NOTREACHED*/ |
| 273 | } |
| 274 | #undef HOW2MAP |
| 275 | |
| 276 | static reloc_howto_type * |
| 277 | mcore_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 278 | const char *r_name) |
| 279 | { |
| 280 | unsigned int i; |
| 281 | |
| 282 | for (i = 0; |
| 283 | i < (sizeof (mcore_coff_howto_table) |
| 284 | / sizeof (mcore_coff_howto_table[0])); |
| 285 | i++) |
| 286 | if (mcore_coff_howto_table[i].name != NULL |
| 287 | && strcasecmp (mcore_coff_howto_table[i].name, r_name) == 0) |
| 288 | return &mcore_coff_howto_table[i]; |
| 289 | |
| 290 | return NULL; |
| 291 | } |
| 292 | |
| 293 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
| 294 | (cache_ptr)->howto = mcore_coff_howto_table + (dst)->r_type; |
| 295 | |
| 296 | static reloc_howto_type * |
| 297 | coff_mcore_rtype_to_howto (bfd * abfd ATTRIBUTE_UNUSED, |
| 298 | asection * sec, |
| 299 | struct internal_reloc * rel, |
| 300 | struct coff_link_hash_entry * h ATTRIBUTE_UNUSED, |
| 301 | struct internal_syment * sym, |
| 302 | bfd_vma * addendp) |
| 303 | { |
| 304 | reloc_howto_type * howto; |
| 305 | |
| 306 | if (rel->r_type >= NUM_ELEM (mcore_coff_howto_table)) |
| 307 | return NULL; |
| 308 | |
| 309 | howto = mcore_coff_howto_table + rel->r_type; |
| 310 | |
| 311 | if (rel->r_type == IMAGE_REL_MCORE_RVA) |
| 312 | * addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; |
| 313 | |
| 314 | else if (howto->pc_relative) |
| 315 | { |
| 316 | * addendp = sec->vma - 2; /* XXX guess - is this right ? */ |
| 317 | |
| 318 | /* If the symbol is defined, then the generic code is going to |
| 319 | add back the symbol value in order to cancel out an |
| 320 | adjustment it made to the addend. However, we set the addend |
| 321 | to 0 at the start of this function. We need to adjust here, |
| 322 | to avoid the adjustment the generic code will make. FIXME: |
| 323 | This is getting a bit hackish. */ |
| 324 | if (sym != NULL && sym->n_scnum != 0) |
| 325 | * addendp -= sym->n_value; |
| 326 | } |
| 327 | else |
| 328 | * addendp = 0; |
| 329 | |
| 330 | return howto; |
| 331 | } |
| 332 | |
| 333 | /* Return TRUE if this relocation should appear in the output .reloc section. |
| 334 | This function is referenced in pe_mkobject in peicode.h. */ |
| 335 | |
| 336 | static bfd_boolean |
| 337 | in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, reloc_howto_type * howto) |
| 338 | { |
| 339 | return ! howto->pc_relative && howto->type != IMAGE_REL_MCORE_RVA; |
| 340 | } |
| 341 | \f |
| 342 | /* The reloc processing routine for the optimized COFF linker. */ |
| 343 | static bfd_boolean |
| 344 | coff_mcore_relocate_section (bfd * output_bfd, |
| 345 | struct bfd_link_info * info, |
| 346 | bfd * input_bfd, |
| 347 | asection * input_section, |
| 348 | bfd_byte * contents, |
| 349 | struct internal_reloc * relocs, |
| 350 | struct internal_syment * syms, |
| 351 | asection ** sections) |
| 352 | { |
| 353 | struct internal_reloc * rel; |
| 354 | struct internal_reloc * relend; |
| 355 | |
| 356 | /* If we are performing a relocatable link, we don't need to do a |
| 357 | thing. The caller will take care of adjusting the reloc |
| 358 | addresses and symbol indices. */ |
| 359 | if (info->relocatable) |
| 360 | return TRUE; |
| 361 | |
| 362 | /* Check if we have the same endianness */ |
| 363 | if ( input_bfd->xvec->byteorder != output_bfd->xvec->byteorder |
| 364 | && output_bfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
| 365 | { |
| 366 | (*_bfd_error_handler) |
| 367 | (_("%B: compiled for a %s system and target is %s.\n"), |
| 368 | input_bfd, |
| 369 | bfd_big_endian (input_bfd) ? _("big endian") : _("little endian"), |
| 370 | bfd_big_endian (output_bfd) ? _("big endian") : _("little endian")); |
| 371 | |
| 372 | bfd_set_error (bfd_error_wrong_format); |
| 373 | return FALSE; |
| 374 | } |
| 375 | |
| 376 | rel = relocs; |
| 377 | relend = rel + input_section->reloc_count; |
| 378 | |
| 379 | for (; rel < relend; rel++) |
| 380 | { |
| 381 | long symndx; |
| 382 | struct internal_syment * sym; |
| 383 | bfd_vma val; |
| 384 | bfd_vma addend; |
| 385 | bfd_reloc_status_type rstat; |
| 386 | bfd_byte * loc; |
| 387 | unsigned short r_type = rel->r_type; |
| 388 | reloc_howto_type * howto = NULL; |
| 389 | struct coff_link_hash_entry * h; |
| 390 | const char * my_name; |
| 391 | |
| 392 | symndx = rel->r_symndx; |
| 393 | loc = contents + rel->r_vaddr - input_section->vma; |
| 394 | |
| 395 | if (symndx == -1) |
| 396 | { |
| 397 | h = NULL; |
| 398 | sym = NULL; |
| 399 | } |
| 400 | else |
| 401 | { |
| 402 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
| 403 | sym = syms + symndx; |
| 404 | } |
| 405 | |
| 406 | addend = 0; |
| 407 | |
| 408 | /* Get the howto and initialise the addend. */ |
| 409 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
| 410 | sym, & addend); |
| 411 | if (howto == NULL) |
| 412 | return FALSE; |
| 413 | |
| 414 | val = 0; |
| 415 | |
| 416 | if (h == NULL) |
| 417 | { |
| 418 | if (symndx == -1) |
| 419 | my_name = "*ABS*"; |
| 420 | else |
| 421 | { |
| 422 | asection * sec = sections[symndx]; |
| 423 | |
| 424 | val = (sym->n_value |
| 425 | + sec->output_section->vma |
| 426 | + sec->output_offset); |
| 427 | |
| 428 | if (sym == NULL) |
| 429 | my_name = "*unknown*"; |
| 430 | else if ( sym->_n._n_n._n_zeroes == 0 |
| 431 | && sym->_n._n_n._n_offset != 0) |
| 432 | my_name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset; |
| 433 | else |
| 434 | { |
| 435 | static char buf [SYMNMLEN + 1]; |
| 436 | |
| 437 | strncpy (buf, sym->_n._n_name, SYMNMLEN); |
| 438 | buf[SYMNMLEN] = '\0'; |
| 439 | my_name = buf; |
| 440 | } |
| 441 | } |
| 442 | } |
| 443 | else |
| 444 | { |
| 445 | if ( h->root.type == bfd_link_hash_defined |
| 446 | || h->root.type == bfd_link_hash_defweak) |
| 447 | { |
| 448 | asection * sec = h->root.u.def.section; |
| 449 | |
| 450 | val = (h->root.u.def.value |
| 451 | + sec->output_section->vma |
| 452 | + sec->output_offset); |
| 453 | } |
| 454 | else |
| 455 | { |
| 456 | if (! ((*info->callbacks->undefined_symbol) |
| 457 | (info, h->root.root.string, input_bfd, input_section, |
| 458 | rel->r_vaddr - input_section->vma, TRUE))) |
| 459 | return FALSE; |
| 460 | } |
| 461 | |
| 462 | my_name = h->root.root.string; |
| 463 | } |
| 464 | |
| 465 | rstat = bfd_reloc_ok; |
| 466 | |
| 467 | /* Each case must do its own relocation, setting rstat appropriately. */ |
| 468 | switch (r_type) |
| 469 | { |
| 470 | default: |
| 471 | _bfd_error_handler (_("%B: unsupported relocation type 0x%02x"), |
| 472 | input_bfd, r_type); |
| 473 | bfd_set_error (bfd_error_bad_value); |
| 474 | return FALSE; |
| 475 | |
| 476 | case IMAGE_REL_MCORE_ABSOLUTE: |
| 477 | _bfd_error_handler |
| 478 | (_("Warning: unsupported reloc %s <file %B, section %A>\n" |
| 479 | "sym %ld (%s), r_vaddr %ld (%lx)"), |
| 480 | input_bfd, input_section, howto->name, |
| 481 | rel->r_symndx, my_name, (long) rel->r_vaddr, |
| 482 | (unsigned long) rel->r_vaddr); |
| 483 | break; |
| 484 | |
| 485 | case IMAGE_REL_MCORE_PCREL_IMM8BY4: |
| 486 | case IMAGE_REL_MCORE_PCREL_IMM11BY2: |
| 487 | case IMAGE_REL_MCORE_PCREL_IMM4BY2: |
| 488 | case IMAGE_REL_MCORE_PCREL_32: |
| 489 | case IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2: |
| 490 | case IMAGE_REL_MCORE_ADDR32: |
| 491 | /* XXX fixme - shouldn't this be like the code for the RVA reloc ? */ |
| 492 | rstat = _bfd_relocate_contents (howto, input_bfd, val, loc); |
| 493 | break; |
| 494 | |
| 495 | case IMAGE_REL_MCORE_RVA: |
| 496 | rstat = _bfd_final_link_relocate |
| 497 | (howto, input_bfd, |
| 498 | input_section, contents, rel->r_vaddr - input_section->vma, |
| 499 | val, addend); |
| 500 | break; |
| 501 | } |
| 502 | |
| 503 | /* Emit a reloc if the backend thinks it needs it. */ |
| 504 | if (info->base_file |
| 505 | && sym |
| 506 | && pe_data (output_bfd)->in_reloc_p (output_bfd, howto) |
| 507 | && !mcore_emit_base_file_entry (info, output_bfd, input_section, |
| 508 | rel->r_vaddr)) |
| 509 | return FALSE; |
| 510 | |
| 511 | switch (rstat) |
| 512 | { |
| 513 | default: |
| 514 | abort (); |
| 515 | |
| 516 | case bfd_reloc_ok: |
| 517 | break; |
| 518 | |
| 519 | case bfd_reloc_overflow: |
| 520 | if (! ((*info->callbacks->reloc_overflow) |
| 521 | (info, (h ? &h->root : NULL), my_name, howto->name, |
| 522 | (bfd_vma) 0, input_bfd, |
| 523 | input_section, rel->r_vaddr - input_section->vma))) |
| 524 | return FALSE; |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | return TRUE; |
| 529 | } |
| 530 | \f |
| 531 | /* Tailor coffcode.h -- macro heaven. */ |
| 532 | |
| 533 | /* We use the special COFF backend linker, with our own special touch. */ |
| 534 | |
| 535 | #define coff_bfd_reloc_type_lookup mcore_coff_reloc_type_lookup |
| 536 | #define coff_bfd_reloc_name_lookup mcore_coff_reloc_name_lookup |
| 537 | #define coff_relocate_section coff_mcore_relocate_section |
| 538 | #define coff_rtype_to_howto coff_mcore_rtype_to_howto |
| 539 | |
| 540 | #define SELECT_RELOC(internal, howto) {internal.r_type = howto->type;} |
| 541 | |
| 542 | /* Make sure that the 'r_offset' field is copied properly |
| 543 | so that identical binaries will compare the same. */ |
| 544 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
| 545 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 |
| 546 | |
| 547 | #define COFF_PAGE_SIZE 0x1000 |
| 548 | |
| 549 | #include "coffcode.h" |
| 550 | \f |
| 551 | /* Forward declaration to initialise alternative_target field. */ |
| 552 | extern const bfd_target TARGET_LITTLE_SYM; |
| 553 | |
| 554 | /* The transfer vectors that lead the outside world to all of the above. */ |
| 555 | CREATE_BIG_COFF_TARGET_VEC (TARGET_BIG_SYM, TARGET_BIG_NAME, D_PAGED, |
| 556 | (SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_READONLY | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), |
| 557 | 0, & TARGET_LITTLE_SYM, COFF_SWAP_TABLE) |
| 558 | CREATE_LITTLE_COFF_TARGET_VEC (TARGET_LITTLE_SYM, TARGET_LITTLE_NAME, D_PAGED, |
| 559 | (SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_READONLY | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), |
| 560 | 0, & TARGET_BIG_SYM, COFF_SWAP_TABLE) |