1/* rescoff.c -- read and write resources in Windows COFF files. 2 Copyright 1997, 1998, 1999, 2000, 2003 3 Free Software Foundation, Inc. 4 Written by Ian Lance Taylor, Cygnus Support. 5 6 This file is part of GNU Binutils. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23/* This file contains function that read and write Windows resources 24 in COFF files. */ 25 26#include "bfd.h" 27#include "bucomm.h" 28#include "libiberty.h" 29#include "windres.h" 30 31#include <assert.h> 32 33/* In order to use the address of a resource data entry, we need to 34 get the image base of the file. Right now we extract it from 35 internal BFD information. FIXME. */ 36 37#include "coff/internal.h" 38#include "libcoff.h" 39 40/* Information we extract from the file. */ 41 42struct coff_file_info 43{ 44 /* File name. */ 45 const char *filename; 46 /* Data read from the file. */ 47 const bfd_byte *data; 48 /* End of data read from file. */ 49 const bfd_byte *data_end; 50 /* Address of the resource section minus the image base of the file. */ 51 bfd_vma secaddr; 52 /* Non-zero if the file is big endian. */ 53 int big_endian; 54}; 55 56/* A resource directory table in a COFF file. */ 57 58struct extern_res_directory 59{ 60 /* Characteristics. */ 61 bfd_byte characteristics[4]; 62 /* Time stamp. */ 63 bfd_byte time[4]; 64 /* Major version number. */ 65 bfd_byte major[2]; 66 /* Minor version number. */ 67 bfd_byte minor[2]; 68 /* Number of named directory entries. */ 69 bfd_byte name_count[2]; 70 /* Number of directory entries with IDs. */ 71 bfd_byte id_count[2]; 72}; 73 74/* A resource directory entry in a COFF file. */ 75 76struct extern_res_entry 77{ 78 /* Name or ID. */ 79 bfd_byte name[4]; 80 /* Address of resource entry or subdirectory. */ 81 bfd_byte rva[4]; 82}; 83 84/* A resource data entry in a COFF file. */ 85 86struct extern_res_data 87{ 88 /* Address of resource data. This is apparently a file relative 89 address, rather than a section offset. */ 90 bfd_byte rva[4]; 91 /* Size of resource data. */ 92 bfd_byte size[4]; 93 /* Code page. */ 94 bfd_byte codepage[4]; 95 /* Reserved. */ 96 bfd_byte reserved[4]; 97}; 98 99/* Macros to swap in values. */ 100 101#define getfi_16(fi, s) ((fi)->big_endian ? bfd_getb16 (s) : bfd_getl16 (s)) 102#define getfi_32(fi, s) ((fi)->big_endian ? bfd_getb32 (s) : bfd_getl32 (s)) 103 104/* Local functions. */ 105 106static void overrun (const struct coff_file_info *, const char *); 107static struct res_directory *read_coff_res_dir 108 (const bfd_byte *, const struct coff_file_info *, 109 const struct res_id *, int); 110static struct res_resource *read_coff_data_entry 111 (const bfd_byte *, const struct coff_file_info *, const struct res_id *); 112 113/* Read the resources in a COFF file. */ 114 115struct res_directory * 116read_coff_rsrc (const char *filename, const char *target) 117{ 118 bfd *abfd; 119 char **matching; 120 asection *sec; 121 bfd_size_type size; 122 bfd_byte *data; 123 struct coff_file_info finfo; 124 125 if (filename == NULL) 126 fatal (_("filename required for COFF input")); 127 128 abfd = bfd_openr (filename, target); 129 if (abfd == NULL) 130 bfd_fatal (filename); 131 132 if (! bfd_check_format_matches (abfd, bfd_object, &matching)) 133 { 134 bfd_nonfatal (bfd_get_filename (abfd)); 135 if (bfd_get_error () == bfd_error_file_ambiguously_recognized) 136 list_matching_formats (matching); 137 xexit (1); 138 } 139 140 sec = bfd_get_section_by_name (abfd, ".rsrc"); 141 if (sec == NULL) 142 { 143 fatal (_("%s: no resource section"), filename); 144 } 145 146 size = bfd_section_size (abfd, sec); 147 data = (bfd_byte *) res_alloc (size); 148 149 if (! bfd_get_section_contents (abfd, sec, data, 0, size)) 150 bfd_fatal (_("can't read resource section")); 151 152 finfo.filename = filename; 153 finfo.data = data; 154 finfo.data_end = data + size; 155 finfo.secaddr = (bfd_get_section_vma (abfd, sec) 156 - pe_data (abfd)->pe_opthdr.ImageBase); 157 finfo.big_endian = bfd_big_endian (abfd); 158 159 bfd_close (abfd); 160 161 /* Now just read in the top level resource directory. Note that we 162 don't free data, since we create resource entries that point into 163 it. If we ever want to free up the resource information we read, 164 this will have to be cleaned up. */ 165 166 return read_coff_res_dir (data, &finfo, (const struct res_id *) NULL, 0); 167} 168 169/* Give an error if we are out of bounds. */ 170 171static void 172overrun (const struct coff_file_info *finfo, const char *msg) 173{ 174 fatal (_("%s: %s: address out of bounds"), finfo->filename, msg); 175} 176 177/* Read a resource directory. */ 178 179static struct res_directory * 180read_coff_res_dir (const bfd_byte *data, const struct coff_file_info *finfo, 181 const struct res_id *type, int level) 182{ 183 const struct extern_res_directory *erd; 184 struct res_directory *rd; 185 int name_count, id_count, i; 186 struct res_entry **pp; 187 const struct extern_res_entry *ere; 188 189 if ((size_t) (finfo->data_end - data) < sizeof (struct extern_res_directory)) 190 overrun (finfo, _("directory")); 191 192 erd = (const struct extern_res_directory *) data; 193 194 rd = (struct res_directory *) res_alloc (sizeof *rd); 195 rd->characteristics = getfi_32 (finfo, erd->characteristics); 196 rd->time = getfi_32 (finfo, erd->time); 197 rd->major = getfi_16 (finfo, erd->major); 198 rd->minor = getfi_16 (finfo, erd->minor); 199 rd->entries = NULL; 200 201 name_count = getfi_16 (finfo, erd->name_count); 202 id_count = getfi_16 (finfo, erd->id_count); 203 204 pp = &rd->entries; 205 206 /* The resource directory entries immediately follow the directory 207 table. */ 208 ere = (const struct extern_res_entry *) (erd + 1); 209 210 for (i = 0; i < name_count; i++, ere++) 211 { 212 unsigned long name, rva; 213 struct res_entry *re; 214 const bfd_byte *ers; 215 int length, j; 216 217 if ((const bfd_byte *) ere >= finfo->data_end) 218 overrun (finfo, _("named directory entry")); 219 220 name = getfi_32 (finfo, ere->name); 221 rva = getfi_32 (finfo, ere->rva); 222 223 /* For some reason the high bit in NAME is set. */ 224 name &=~ 0x80000000; 225 226 if (name > (size_t) (finfo->data_end - finfo->data)) 227 overrun (finfo, _("directory entry name")); 228 229 ers = finfo->data + name; 230 231 re = (struct res_entry *) res_alloc (sizeof *re); 232 re->next = NULL; 233 re->id.named = 1; 234 length = getfi_16 (finfo, ers); 235 re->id.u.n.length = length; 236 re->id.u.n.name = (unichar *) res_alloc (length * sizeof (unichar)); 237 for (j = 0; j < length; j++) 238 re->id.u.n.name[j] = getfi_16 (finfo, ers + j * 2 + 2); 239 240 if (level == 0) 241 type = &re->id; 242 243 if ((rva & 0x80000000) != 0) 244 { 245 rva &=~ 0x80000000; 246 if (rva >= (size_t) (finfo->data_end - finfo->data)) 247 overrun (finfo, _("named subdirectory")); 248 re->subdir = 1; 249 re->u.dir = read_coff_res_dir (finfo->data + rva, finfo, type, 250 level + 1); 251 } 252 else 253 { 254 if (rva >= (size_t) (finfo->data_end - finfo->data)) 255 overrun (finfo, _("named resource")); 256 re->subdir = 0; 257 re->u.res = read_coff_data_entry (finfo->data + rva, finfo, type); 258 } 259 260 *pp = re; 261 pp = &re->next; 262 } 263 264 for (i = 0; i < id_count; i++, ere++) 265 { 266 unsigned long name, rva; 267 struct res_entry *re; 268 269 if ((const bfd_byte *) ere >= finfo->data_end) 270 overrun (finfo, _("ID directory entry")); 271 272 name = getfi_32 (finfo, ere->name); 273 rva = getfi_32 (finfo, ere->rva); 274 275 re = (struct res_entry *) res_alloc (sizeof *re); 276 re->next = NULL; 277 re->id.named = 0; 278 re->id.u.id = name; 279 280 if (level == 0) 281 type = &re->id; 282 283 if ((rva & 0x80000000) != 0) 284 { 285 rva &=~ 0x80000000; 286 if (rva >= (size_t) (finfo->data_end - finfo->data)) 287 overrun (finfo, _("ID subdirectory")); 288 re->subdir = 1; 289 re->u.dir = read_coff_res_dir (finfo->data + rva, finfo, type, 290 level + 1); 291 } 292 else 293 { 294 if (rva >= (size_t) (finfo->data_end - finfo->data)) 295 overrun (finfo, _("ID resource")); 296 re->subdir = 0; 297 re->u.res = read_coff_data_entry (finfo->data + rva, finfo, type); 298 } 299 300 *pp = re; 301 pp = &re->next; 302 } 303 304 return rd; 305} 306 307/* Read a resource data entry. */ 308 309static struct res_resource * 310read_coff_data_entry (const bfd_byte *data, const struct coff_file_info *finfo, const struct res_id *type) 311{ 312 const struct extern_res_data *erd; 313 struct res_resource *r; 314 unsigned long size, rva; 315 const bfd_byte *resdata; 316 317 if (type == NULL) 318 fatal (_("resource type unknown")); 319 320 if ((size_t) (finfo->data_end - data) < sizeof (struct extern_res_data)) 321 overrun (finfo, _("data entry")); 322 323 erd = (const struct extern_res_data *) data; 324 325 size = getfi_32 (finfo, erd->size); 326 rva = getfi_32 (finfo, erd->rva); 327 if (rva < finfo->secaddr 328 || rva - finfo->secaddr >= (size_t) (finfo->data_end - finfo->data)) 329 overrun (finfo, _("resource data")); 330 331 resdata = finfo->data + (rva - finfo->secaddr); 332 333 if (size > (size_t) (finfo->data_end - resdata)) 334 overrun (finfo, _("resource data size")); 335 336 r = bin_to_res (*type, resdata, size, finfo->big_endian); 337 338 memset (&r->res_info, 0, sizeof (struct res_res_info)); 339 r->coff_info.codepage = getfi_32 (finfo, erd->codepage); 340 r->coff_info.reserved = getfi_32 (finfo, erd->reserved); 341 342 return r; 343} 344 345/* This structure is used to build a list of bindata structures. */ 346 347struct bindata_build 348{ 349 /* The data. */ 350 struct bindata *d; 351 /* The last structure we have added to the list. */ 352 struct bindata *last; 353 /* The size of the list as a whole. */ 354 unsigned long length; 355}; 356 357/* This structure keeps track of information as we build the directory 358 tree. */ 359 360struct coff_write_info 361{ 362 /* These fields are based on the BFD. */ 363 /* The BFD itself. */ 364 bfd *abfd; 365 /* Non-zero if the file is big endian. */ 366 int big_endian; 367 /* Pointer to section symbol used to build RVA relocs. */ 368 asymbol **sympp; 369 370 /* These fields are computed initially, and then not changed. */ 371 /* Length of directory tables and entries. */ 372 unsigned long dirsize; 373 /* Length of directory entry strings. */ 374 unsigned long dirstrsize; 375 /* Length of resource data entries. */ 376 unsigned long dataentsize; 377 378 /* These fields are updated as we add data. */ 379 /* Directory tables and entries. */ 380 struct bindata_build dirs; 381 /* Directory entry strings. */ 382 struct bindata_build dirstrs; 383 /* Resource data entries. */ 384 struct bindata_build dataents; 385 /* Actual resource data. */ 386 struct bindata_build resources; 387 /* Relocations. */ 388 arelent **relocs; 389 /* Number of relocations. */ 390 unsigned int reloc_count; 391}; 392 393/* Macros to swap out values. */ 394 395#define putcwi_16(cwi, v, s) \ 396 ((cwi->big_endian) ? bfd_putb16 ((v), (s)) : bfd_putl16 ((v), (s))) 397#define putcwi_32(cwi, v, s) \ 398 ((cwi->big_endian) ? bfd_putb32 ((v), (s)) : bfd_putl32 ((v), (s))) 399 400static void coff_bin_sizes 401 (const struct res_directory *, struct coff_write_info *); 402static unsigned char *coff_alloc (struct bindata_build *, size_t); 403static void coff_to_bin 404 (const struct res_directory *, struct coff_write_info *); 405static void coff_res_to_bin 406 (const struct res_resource *, struct coff_write_info *); 407 408/* Write resources to a COFF file. RESOURCES should already be 409 sorted. 410 411 Right now we always create a new file. Someday we should also 412 offer the ability to merge resources into an existing file. This 413 would require doing the basic work of objcopy, just modifying or 414 adding the .rsrc section. */ 415 416void 417write_coff_file (const char *filename, const char *target, 418 const struct res_directory *resources) 419{ 420 bfd *abfd; 421 asection *sec; 422 struct coff_write_info cwi; 423 struct bindata *d; 424 unsigned long length, offset; 425 426 if (filename == NULL) 427 fatal (_("filename required for COFF output")); 428 429 abfd = bfd_openw (filename, target); 430 if (abfd == NULL) 431 bfd_fatal (filename); 432 433 if (! bfd_set_format (abfd, bfd_object)) 434 bfd_fatal ("bfd_set_format"); 435 436#if defined DLLTOOL_SH 437 if (! bfd_set_arch_mach (abfd, bfd_arch_sh, 0)) 438 bfd_fatal ("bfd_set_arch_mach(sh)"); 439#elif defined DLLTOOL_MIPS 440 if (! bfd_set_arch_mach (abfd, bfd_arch_mips, 0)) 441 bfd_fatal ("bfd_set_arch_mach(mips)"); 442#elif defined DLLTOOL_ARM 443 if (! bfd_set_arch_mach (abfd, bfd_arch_arm, 0)) 444 bfd_fatal ("bfd_set_arch_mach(arm)"); 445#else 446 /* FIXME: This is obviously i386 specific. */ 447 if (! bfd_set_arch_mach (abfd, bfd_arch_i386, 0)) 448 bfd_fatal ("bfd_set_arch_mach(i386)"); 449#endif 450 451 if (! bfd_set_file_flags (abfd, HAS_SYMS | HAS_RELOC)) 452 bfd_fatal ("bfd_set_file_flags"); 453 454 sec = bfd_make_section (abfd, ".rsrc"); 455 if (sec == NULL) 456 bfd_fatal ("bfd_make_section"); 457 458 if (! bfd_set_section_flags (abfd, sec, 459 (SEC_HAS_CONTENTS | SEC_ALLOC 460 | SEC_LOAD | SEC_DATA))) 461 bfd_fatal ("bfd_set_section_flags"); 462 463 if (! bfd_set_symtab (abfd, sec->symbol_ptr_ptr, 1)) 464 bfd_fatal ("bfd_set_symtab"); 465 466 /* Requiring this is probably a bug in BFD. */ 467 sec->output_section = sec; 468 469 /* The order of data in the .rsrc section is 470 resource directory tables and entries 471 resource directory strings 472 resource data entries 473 actual resource data 474 475 We build these different types of data in different lists. */ 476 477 cwi.abfd = abfd; 478 cwi.big_endian = bfd_big_endian (abfd); 479 cwi.sympp = sec->symbol_ptr_ptr; 480 cwi.dirsize = 0; 481 cwi.dirstrsize = 0; 482 cwi.dataentsize = 0; 483 cwi.dirs.d = NULL; 484 cwi.dirs.last = NULL; 485 cwi.dirs.length = 0; 486 cwi.dirstrs.d = NULL; 487 cwi.dirstrs.last = NULL; 488 cwi.dirstrs.length = 0; 489 cwi.dataents.d = NULL; 490 cwi.dataents.last = NULL; 491 cwi.dataents.length = 0; 492 cwi.resources.d = NULL; 493 cwi.resources.last = NULL; 494 cwi.resources.length = 0; 495 cwi.relocs = NULL; 496 cwi.reloc_count = 0; 497 498 /* Work out the sizes of the resource directory entries, so that we 499 know the various offsets we will need. */ 500 coff_bin_sizes (resources, &cwi); 501 502 /* Force the directory strings to be 32 bit aligned. Every other 503 structure is 32 bit aligned anyhow. */ 504 cwi.dirstrsize = (cwi.dirstrsize + 3) &~ 3; 505 506 /* Actually convert the resources to binary. */ 507 coff_to_bin (resources, &cwi); 508 509 /* Add another 2 bytes to the directory strings if needed for 510 alignment. */ 511 if ((cwi.dirstrs.length & 3) != 0) 512 { 513 unsigned char *ex; 514 515 ex = coff_alloc (&cwi.dirstrs, 2); 516 ex[0] = 0; 517 ex[1] = 0; 518 } 519 520 /* Make sure that the data we built came out to the same size as we 521 calculated initially. */ 522 assert (cwi.dirs.length == cwi.dirsize); 523 assert (cwi.dirstrs.length == cwi.dirstrsize); 524 assert (cwi.dataents.length == cwi.dataentsize); 525 526 length = (cwi.dirsize 527 + cwi.dirstrsize 528 + cwi.dataentsize 529 + cwi.resources.length); 530 531 if (! bfd_set_section_size (abfd, sec, length)) 532 bfd_fatal ("bfd_set_section_size"); 533 534 bfd_set_reloc (abfd, sec, cwi.relocs, cwi.reloc_count); 535 536 offset = 0; 537 for (d = cwi.dirs.d; d != NULL; d = d->next) 538 { 539 if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) 540 bfd_fatal ("bfd_set_section_contents"); 541 offset += d->length; 542 } 543 for (d = cwi.dirstrs.d; d != NULL; d = d->next) 544 { 545 if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) 546 bfd_fatal ("bfd_set_section_contents"); 547 offset += d->length; 548 } 549 for (d = cwi.dataents.d; d != NULL; d = d->next) 550 { 551 if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) 552 bfd_fatal ("bfd_set_section_contents"); 553 offset += d->length; 554 } 555 for (d = cwi.resources.d; d != NULL; d = d->next) 556 { 557 if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) 558 bfd_fatal ("bfd_set_section_contents"); 559 offset += d->length; 560 } 561 562 assert (offset == length); 563 564 if (! bfd_close (abfd)) 565 bfd_fatal ("bfd_close"); 566 567 /* We allocated the relocs array using malloc. */ 568 free (cwi.relocs); 569} 570 571/* Work out the sizes of the various fixed size resource directory 572 entries. This updates fields in CWI. */ 573 574static void 575coff_bin_sizes (const struct res_directory *resdir, 576 struct coff_write_info *cwi) 577{ 578 const struct res_entry *re; 579 580 cwi->dirsize += sizeof (struct extern_res_directory); 581 582 for (re = resdir->entries; re != NULL; re = re->next) 583 { 584 cwi->dirsize += sizeof (struct extern_res_entry); 585 586 if (re->id.named) 587 cwi->dirstrsize += re->id.u.n.length * 2 + 2; 588 589 if (re->subdir) 590 coff_bin_sizes (re->u.dir, cwi); 591 else 592 cwi->dataentsize += sizeof (struct extern_res_data); 593 } 594} 595 596/* Allocate data for a particular list. */ 597 598static unsigned char * 599coff_alloc (struct bindata_build *bb, size_t size) 600{ 601 struct bindata *d; 602 603 d = (struct bindata *) reswr_alloc (sizeof *d); 604 605 d->next = NULL; 606 d->data = (unsigned char *) reswr_alloc (size); 607 d->length = size; 608 609 if (bb->d == NULL) 610 bb->d = d; 611 else 612 bb->last->next = d; 613 bb->last = d; 614 bb->length += size; 615 616 return d->data; 617} 618 619/* Convert the resource directory RESDIR to binary. */ 620 621static void 622coff_to_bin (const struct res_directory *resdir, struct coff_write_info *cwi) 623{ 624 struct extern_res_directory *erd; 625 int ci, cn; 626 const struct res_entry *e; 627 struct extern_res_entry *ere; 628 629 /* Write out the directory table. */ 630 631 erd = ((struct extern_res_directory *) 632 coff_alloc (&cwi->dirs, sizeof (*erd))); 633 634 putcwi_32 (cwi, resdir->characteristics, erd->characteristics); 635 putcwi_32 (cwi, resdir->time, erd->time); 636 putcwi_16 (cwi, resdir->major, erd->major); 637 putcwi_16 (cwi, resdir->minor, erd->minor); 638 639 ci = 0; 640 cn = 0; 641 for (e = resdir->entries; e != NULL; e = e->next) 642 { 643 if (e->id.named) 644 ++cn; 645 else 646 ++ci; 647 } 648 649 putcwi_16 (cwi, cn, erd->name_count); 650 putcwi_16 (cwi, ci, erd->id_count); 651 652 /* Write out the data entries. Note that we allocate space for all 653 the entries before writing them out. That permits a recursive 654 call to work correctly when writing out subdirectories. */ 655 656 ere = ((struct extern_res_entry *) 657 coff_alloc (&cwi->dirs, (ci + cn) * sizeof (*ere))); 658 for (e = resdir->entries; e != NULL; e = e->next, ere++) 659 { 660 if (! e->id.named) 661 putcwi_32 (cwi, e->id.u.id, ere->name); 662 else 663 { 664 unsigned char *str; 665 int i; 666 667 /* For some reason existing files seem to have the high bit 668 set on the address of the name, although that is not 669 documented. */ 670 putcwi_32 (cwi, 671 0x80000000 | (cwi->dirsize + cwi->dirstrs.length), 672 ere->name); 673 674 str = coff_alloc (&cwi->dirstrs, e->id.u.n.length * 2 + 2); 675 putcwi_16 (cwi, e->id.u.n.length, str); 676 for (i = 0; i < e->id.u.n.length; i++) 677 putcwi_16 (cwi, e->id.u.n.name[i], str + i * 2 + 2); 678 } 679 680 if (e->subdir) 681 { 682 putcwi_32 (cwi, 0x80000000 | cwi->dirs.length, ere->rva); 683 coff_to_bin (e->u.dir, cwi); 684 } 685 else 686 { 687 putcwi_32 (cwi, 688 cwi->dirsize + cwi->dirstrsize + cwi->dataents.length, 689 ere->rva); 690 691 coff_res_to_bin (e->u.res, cwi); 692 } 693 } 694} 695 696/* Convert the resource RES to binary. */ 697 698static void 699coff_res_to_bin (const struct res_resource *res, struct coff_write_info *cwi) 700{ 701 arelent *r; 702 struct extern_res_data *erd; 703 struct bindata *d; 704 unsigned long length; 705 706 /* For some reason, although every other address is a section 707 offset, the address of the resource data itself is an RVA. That 708 means that we need to generate a relocation for it. We allocate 709 the relocs array using malloc so that we can use realloc. FIXME: 710 This relocation handling is correct for the i386, but probably 711 not for any other target. */ 712 713 r = (arelent *) reswr_alloc (sizeof (arelent)); 714 r->sym_ptr_ptr = cwi->sympp; 715 r->address = cwi->dirsize + cwi->dirstrsize + cwi->dataents.length; 716 r->addend = 0; 717 r->howto = bfd_reloc_type_lookup (cwi->abfd, BFD_RELOC_RVA); 718 if (r->howto == NULL) 719 bfd_fatal (_("can't get BFD_RELOC_RVA relocation type")); 720 721 cwi->relocs = xrealloc (cwi->relocs, 722 (cwi->reloc_count + 2) * sizeof (arelent *)); 723 cwi->relocs[cwi->reloc_count] = r; 724 cwi->relocs[cwi->reloc_count + 1] = NULL; 725 ++cwi->reloc_count; 726 727 erd = (struct extern_res_data *) coff_alloc (&cwi->dataents, sizeof (*erd)); 728 729 putcwi_32 (cwi, 730 (cwi->dirsize 731 + cwi->dirstrsize 732 + cwi->dataentsize 733 + cwi->resources.length), 734 erd->rva); 735 putcwi_32 (cwi, res->coff_info.codepage, erd->codepage); 736 putcwi_32 (cwi, res->coff_info.reserved, erd->reserved); 737 738 d = res_to_bin (res, cwi->big_endian); 739 740 if (cwi->resources.d == NULL) 741 cwi->resources.d = d; 742 else 743 cwi->resources.last->next = d; 744 745 length = 0; 746 for (; d->next != NULL; d = d->next) 747 length += d->length; 748 length += d->length; 749 cwi->resources.last = d; 750 cwi->resources.length += length; 751 752 putcwi_32 (cwi, length, erd->size); 753 754 /* Force the next resource to have 32 bit alignment. */ 755 756 if ((length & 3) != 0) 757 { 758 int add; 759 unsigned char *ex; 760 761 add = 4 - (length & 3); 762 763 ex = coff_alloc (&cwi->resources, add); 764 memset (ex, 0, add); 765 } 766} 767