Commit | Line | Data |
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662cc41e | 1 | /* rescoff.c -- read and write resources in Windows COFF files. |
e4486bdf ILT |
2 | Copyright 1997 Free Software Foundation, Inc. |
3 | Written by Ian Lance Taylor, Cygnus Support. | |
4 | ||
5 | This file is part of GNU Binutils. | |
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 | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | /* This file contains function that read and write Windows resources | |
23 | in COFF files. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "bucomm.h" | |
27 | #include "libiberty.h" | |
28 | #include "windres.h" | |
29 | ||
662cc41e ILT |
30 | #include <assert.h> |
31 | ||
e4486bdf ILT |
32 | /* In order to use the address of a resource data entry, we need to |
33 | get the image base of the file. Right now we extract it from | |
34 | internal BFD information. FIXME. */ | |
35 | ||
36 | #include "coff/internal.h" | |
37 | #include "libcoff.h" | |
38 | ||
39 | /* Information we extract from the file. */ | |
40 | ||
41 | struct coff_file_info | |
42 | { | |
43 | /* File name. */ | |
44 | const char *filename; | |
45 | /* Data read from the file. */ | |
46 | const bfd_byte *data; | |
47 | /* End of data read from file. */ | |
48 | const bfd_byte *data_end; | |
49 | /* Address of the resource section minus the image base of the file. */ | |
50 | bfd_vma secaddr; | |
51 | /* Non-zero if the file is big endian. */ | |
52 | int big_endian; | |
53 | }; | |
54 | ||
55 | /* A resource directory table in a COFF file. */ | |
56 | ||
57 | struct extern_res_directory | |
58 | { | |
59 | /* Characteristics. */ | |
60 | bfd_byte characteristics[4]; | |
61 | /* Time stamp. */ | |
62 | bfd_byte time[4]; | |
63 | /* Major version number. */ | |
64 | bfd_byte major[2]; | |
65 | /* Minor version number. */ | |
66 | bfd_byte minor[2]; | |
67 | /* Number of named directory entries. */ | |
68 | bfd_byte name_count[2]; | |
69 | /* Number of directory entries with IDs. */ | |
70 | bfd_byte id_count[2]; | |
71 | }; | |
72 | ||
73 | /* A resource directory entry in a COFF file. */ | |
74 | ||
75 | struct extern_res_entry | |
76 | { | |
77 | /* Name or ID. */ | |
78 | bfd_byte name[4]; | |
79 | /* Address of resource entry or subdirectory. */ | |
80 | bfd_byte rva[4]; | |
81 | }; | |
82 | ||
83 | /* A resource data entry in a COFF file. */ | |
84 | ||
85 | struct extern_res_data | |
86 | { | |
87 | /* Address of resource data. This is apparently a file relative | |
88 | address, rather than a section offset. */ | |
89 | bfd_byte rva[4]; | |
90 | /* Size of resource data. */ | |
91 | bfd_byte size[4]; | |
92 | /* Code page. */ | |
93 | bfd_byte codepage[4]; | |
94 | /* Reserved. */ | |
95 | bfd_byte reserved[4]; | |
96 | }; | |
97 | ||
98 | /* Macros to swap in values. */ | |
99 | ||
662cc41e ILT |
100 | #define getfi_16(fi, s) ((fi)->big_endian ? bfd_getb16 (s) : bfd_getl16 (s)) |
101 | #define getfi_32(fi, s) ((fi)->big_endian ? bfd_getb32 (s) : bfd_getl32 (s)) | |
e4486bdf ILT |
102 | |
103 | /* Local functions. */ | |
104 | ||
105 | static void overrun PARAMS ((const struct coff_file_info *, const char *)); | |
106 | static struct res_directory *read_coff_res_dir | |
662cc41e ILT |
107 | PARAMS ((const bfd_byte *, const struct coff_file_info *, |
108 | const struct res_id *, int)); | |
e4486bdf | 109 | static struct res_resource *read_coff_data_entry |
662cc41e ILT |
110 | PARAMS ((const bfd_byte *, const struct coff_file_info *, |
111 | const struct res_id *)); | |
e4486bdf ILT |
112 | \f |
113 | /* Read the resources in a COFF file. */ | |
114 | ||
115 | struct res_directory * | |
116 | read_coff_rsrc (filename, target) | |
117 | const char *filename; | |
118 | const char *target; | |
119 | { | |
120 | bfd *abfd; | |
121 | char **matching; | |
122 | asection *sec; | |
123 | bfd_size_type size; | |
124 | bfd_byte *data; | |
125 | struct coff_file_info finfo; | |
126 | ||
127 | abfd = bfd_openr (filename, target); | |
128 | if (abfd == NULL) | |
129 | bfd_fatal (filename); | |
130 | ||
131 | if (! bfd_check_format_matches (abfd, bfd_object, &matching)) | |
132 | { | |
133 | bfd_nonfatal (bfd_get_filename (abfd)); | |
134 | if (bfd_get_error () == bfd_error_file_ambiguously_recognized) | |
135 | list_matching_formats (matching); | |
136 | xexit (1); | |
137 | } | |
138 | ||
139 | sec = bfd_get_section_by_name (abfd, ".rsrc"); | |
140 | if (sec == NULL) | |
141 | { | |
142 | fprintf (stderr, "%s: %s: no resource section\n", program_name, | |
143 | filename); | |
144 | xexit (1); | |
145 | } | |
146 | ||
147 | size = bfd_section_size (abfd, sec); | |
662cc41e | 148 | data = (bfd_byte *) res_alloc (size); |
e4486bdf ILT |
149 | |
150 | if (! bfd_get_section_contents (abfd, sec, data, 0, size)) | |
151 | bfd_fatal ("can't read resource section"); | |
152 | ||
153 | finfo.filename = filename; | |
154 | finfo.data = data; | |
155 | finfo.data_end = data + size; | |
156 | finfo.secaddr = (bfd_get_section_vma (abfd, sec) | |
157 | - pe_data (abfd)->pe_opthdr.ImageBase); | |
158 | finfo.big_endian = bfd_big_endian (abfd); | |
159 | ||
160 | bfd_close (abfd); | |
161 | ||
162 | /* Now just read in the top level resource directory. Note that we | |
163 | don't free data, since we create resource entries that point into | |
164 | it. If we ever want to free up the resource information we read, | |
165 | this will have to be cleaned up. */ | |
166 | ||
662cc41e | 167 | return read_coff_res_dir (data, &finfo, (const struct res_id *) NULL, 0); |
e4486bdf ILT |
168 | } |
169 | ||
170 | /* Give an error if we are out of bounds. */ | |
171 | ||
172 | static void | |
173 | overrun (finfo, msg) | |
174 | const struct coff_file_info *finfo; | |
175 | const char *msg; | |
176 | { | |
177 | fatal ("%s: %s: address out of bounds", finfo->filename, msg); | |
178 | } | |
179 | ||
180 | /* Read a resource directory. */ | |
181 | ||
182 | static struct res_directory * | |
662cc41e | 183 | read_coff_res_dir (data, finfo, type, level) |
e4486bdf ILT |
184 | const bfd_byte *data; |
185 | const struct coff_file_info *finfo; | |
662cc41e ILT |
186 | const struct res_id *type; |
187 | int level; | |
e4486bdf ILT |
188 | { |
189 | const struct extern_res_directory *erd; | |
190 | struct res_directory *rd; | |
191 | int name_count, id_count, i; | |
192 | struct res_entry **pp; | |
193 | const struct extern_res_entry *ere; | |
194 | ||
195 | if (finfo->data_end - data < sizeof (struct extern_res_directory)) | |
196 | overrun (finfo, "directory"); | |
197 | ||
198 | erd = (const struct extern_res_directory *) data; | |
199 | ||
662cc41e ILT |
200 | rd = (struct res_directory *) res_alloc (sizeof *rd); |
201 | rd->characteristics = getfi_32 (finfo, erd->characteristics); | |
202 | rd->time = getfi_32 (finfo, erd->time); | |
203 | rd->major = getfi_16 (finfo, erd->major); | |
204 | rd->minor = getfi_16 (finfo, erd->minor); | |
e4486bdf ILT |
205 | rd->entries = NULL; |
206 | ||
662cc41e ILT |
207 | name_count = getfi_16 (finfo, erd->name_count); |
208 | id_count = getfi_16 (finfo, erd->id_count); | |
e4486bdf ILT |
209 | |
210 | pp = &rd->entries; | |
211 | ||
212 | /* The resource directory entries immediately follow the directory | |
213 | table. */ | |
214 | ere = (const struct extern_res_entry *) (erd + 1); | |
215 | ||
216 | for (i = 0; i < name_count; i++, ere++) | |
217 | { | |
218 | unsigned long name, rva; | |
219 | struct res_entry *re; | |
220 | const bfd_byte *ers; | |
221 | int length, j; | |
222 | ||
223 | if ((const bfd_byte *) ere >= finfo->data_end) | |
224 | overrun (finfo, "named directory entry"); | |
225 | ||
662cc41e ILT |
226 | name = getfi_32 (finfo, ere->name); |
227 | rva = getfi_32 (finfo, ere->rva); | |
e4486bdf ILT |
228 | |
229 | /* For some reason the high bit in NAME is set. */ | |
230 | name &=~ 0x80000000; | |
231 | ||
232 | if (name > finfo->data_end - finfo->data) | |
233 | overrun (finfo, "directory entry name"); | |
234 | ||
235 | ers = finfo->data + name; | |
236 | ||
662cc41e | 237 | re = (struct res_entry *) res_alloc (sizeof *re); |
e4486bdf ILT |
238 | re->next = NULL; |
239 | re->id.named = 1; | |
662cc41e | 240 | length = getfi_16 (finfo, ers); |
e4486bdf | 241 | re->id.u.n.length = length; |
662cc41e | 242 | re->id.u.n.name = (unichar *) res_alloc (length * sizeof (unichar)); |
e4486bdf | 243 | for (j = 0; j < length; j++) |
662cc41e ILT |
244 | re->id.u.n.name[j] = getfi_16 (finfo, ers + j * 2 + 2); |
245 | ||
246 | if (level == 0) | |
247 | type = &re->id; | |
e4486bdf ILT |
248 | |
249 | if ((rva & 0x80000000) != 0) | |
250 | { | |
251 | rva &=~ 0x80000000; | |
252 | if (rva >= finfo->data_end - finfo->data) | |
253 | overrun (finfo, "named subdirectory"); | |
254 | re->subdir = 1; | |
662cc41e ILT |
255 | re->u.dir = read_coff_res_dir (finfo->data + rva, finfo, type, |
256 | level + 1); | |
e4486bdf ILT |
257 | } |
258 | else | |
259 | { | |
260 | if (rva >= finfo->data_end - finfo->data) | |
261 | overrun (finfo, "named resource"); | |
262 | re->subdir = 0; | |
662cc41e | 263 | re->u.res = read_coff_data_entry (finfo->data + rva, finfo, type); |
e4486bdf ILT |
264 | } |
265 | ||
266 | *pp = re; | |
267 | pp = &re->next; | |
268 | } | |
269 | ||
270 | for (i = 0; i < id_count; i++, ere++) | |
271 | { | |
272 | unsigned long name, rva; | |
273 | struct res_entry *re; | |
274 | ||
275 | if ((const bfd_byte *) ere >= finfo->data_end) | |
276 | overrun (finfo, "ID directory entry"); | |
277 | ||
662cc41e ILT |
278 | name = getfi_32 (finfo, ere->name); |
279 | rva = getfi_32 (finfo, ere->rva); | |
e4486bdf | 280 | |
662cc41e | 281 | re = (struct res_entry *) res_alloc (sizeof *re); |
e4486bdf ILT |
282 | re->next = NULL; |
283 | re->id.named = 0; | |
284 | re->id.u.id = name; | |
285 | ||
662cc41e ILT |
286 | if (level == 0) |
287 | type = &re->id; | |
288 | ||
e4486bdf ILT |
289 | if ((rva & 0x80000000) != 0) |
290 | { | |
291 | rva &=~ 0x80000000; | |
292 | if (rva >= finfo->data_end - finfo->data) | |
293 | overrun (finfo, "ID subdirectory"); | |
294 | re->subdir = 1; | |
662cc41e ILT |
295 | re->u.dir = read_coff_res_dir (finfo->data + rva, finfo, type, |
296 | level + 1); | |
e4486bdf ILT |
297 | } |
298 | else | |
299 | { | |
300 | if (rva >= finfo->data_end - finfo->data) | |
301 | overrun (finfo, "ID resource"); | |
302 | re->subdir = 0; | |
662cc41e | 303 | re->u.res = read_coff_data_entry (finfo->data + rva, finfo, type); |
e4486bdf ILT |
304 | } |
305 | ||
306 | *pp = re; | |
307 | pp = &re->next; | |
308 | } | |
309 | ||
310 | return rd; | |
311 | } | |
312 | ||
313 | /* Read a resource data entry. */ | |
314 | ||
315 | static struct res_resource * | |
662cc41e | 316 | read_coff_data_entry (data, finfo, type) |
e4486bdf ILT |
317 | const bfd_byte *data; |
318 | const struct coff_file_info *finfo; | |
662cc41e | 319 | const struct res_id *type; |
e4486bdf ILT |
320 | { |
321 | const struct extern_res_data *erd; | |
322 | struct res_resource *r; | |
323 | unsigned long size, rva; | |
324 | const bfd_byte *resdata; | |
325 | ||
662cc41e ILT |
326 | if (type == NULL) |
327 | fatal ("resource type unknown"); | |
328 | ||
e4486bdf ILT |
329 | if (finfo->data_end - data < sizeof (struct extern_res_data)) |
330 | overrun (finfo, "data entry"); | |
331 | ||
332 | erd = (const struct extern_res_data *) data; | |
333 | ||
662cc41e ILT |
334 | size = getfi_32 (finfo, erd->size); |
335 | rva = getfi_32 (finfo, erd->rva); | |
e4486bdf ILT |
336 | if (rva < finfo->secaddr |
337 | || rva - finfo->secaddr >= finfo->data_end - finfo->data) | |
338 | overrun (finfo, "resource data"); | |
339 | ||
340 | resdata = finfo->data + (rva - finfo->secaddr); | |
341 | ||
662cc41e ILT |
342 | if (size > finfo->data_end - resdata) |
343 | overrun (finfo, "resource data size"); | |
344 | ||
345 | r = bin_to_res (*type, resdata, size, finfo->big_endian); | |
346 | ||
347 | memset (&r->res_info, 0, sizeof (struct res_res_info)); | |
348 | r->coff_info.codepage = getfi_32 (finfo, erd->codepage); | |
349 | r->coff_info.reserved = getfi_32 (finfo, erd->reserved); | |
e4486bdf ILT |
350 | |
351 | return r; | |
352 | } | |
662cc41e ILT |
353 | \f |
354 | /* This structure is used to build a list of bindata structures. */ | |
355 | ||
356 | struct bindata_build | |
357 | { | |
358 | /* The data. */ | |
359 | struct bindata *d; | |
360 | /* The last structure we have added to the list. */ | |
361 | struct bindata *last; | |
362 | /* The size of the list as a whole. */ | |
363 | unsigned long length; | |
364 | }; | |
365 | ||
366 | /* This structure keeps track of information as we build the directory | |
367 | tree. */ | |
368 | ||
369 | struct coff_write_info | |
370 | { | |
371 | /* These fields are based on the BFD. */ | |
372 | /* The BFD itself. */ | |
373 | bfd *abfd; | |
374 | /* Non-zero if the file is big endian. */ | |
375 | int big_endian; | |
376 | /* Pointer to section symbol used to build RVA relocs. */ | |
377 | asymbol **sympp; | |
378 | ||
379 | /* These fields are computed initially, and then not changed. */ | |
380 | /* Length of directory tables and entries. */ | |
381 | unsigned long dirsize; | |
382 | /* Length of directory entry strings. */ | |
383 | unsigned long dirstrsize; | |
384 | /* Length of resource data entries. */ | |
385 | unsigned long dataentsize; | |
386 | ||
387 | /* These fields are updated as we add data. */ | |
388 | /* Directory tables and entries. */ | |
389 | struct bindata_build dirs; | |
390 | /* Directory entry strings. */ | |
391 | struct bindata_build dirstrs; | |
392 | /* Resource data entries. */ | |
393 | struct bindata_build dataents; | |
394 | /* Actual resource data. */ | |
395 | struct bindata_build resources; | |
396 | /* Relocations. */ | |
397 | arelent **relocs; | |
398 | /* Number of relocations. */ | |
399 | unsigned int reloc_count; | |
400 | }; | |
401 | ||
402 | /* Macros to swap out values. */ | |
403 | ||
404 | #define putcwi_16(cwi, v, s) \ | |
405 | ((cwi->big_endian) ? bfd_putb16 ((v), (s)) : bfd_putl16 ((v), (s))) | |
406 | #define putcwi_32(cwi, v, s) \ | |
407 | ((cwi->big_endian) ? bfd_putb32 ((v), (s)) : bfd_putl32 ((v), (s))) | |
408 | ||
409 | static void coff_bin_sizes | |
410 | PARAMS ((const struct res_directory *, struct coff_write_info *)); | |
411 | static unsigned char *coff_alloc PARAMS ((struct bindata_build *, size_t)); | |
412 | static void coff_to_bin | |
413 | PARAMS ((const struct res_directory *, struct coff_write_info *)); | |
414 | static void coff_res_to_bin | |
415 | PARAMS ((const struct res_resource *, struct coff_write_info *)); | |
416 | ||
417 | /* Write resources to a COFF file. RESOURCES should already be | |
418 | sorted. | |
419 | ||
420 | Right now we always create a new file. Someday we should also | |
421 | offer the ability to merge resources into an existing file. This | |
422 | would require doing the basic work of objcopy, just modifying or | |
423 | adding the .rsrc section. */ | |
424 | ||
425 | ||
426 | void | |
427 | write_coff_file (filename, target, resources) | |
428 | const char *filename; | |
429 | const char *target; | |
430 | const struct res_directory *resources; | |
431 | { | |
432 | bfd *abfd; | |
433 | asection *sec; | |
434 | struct coff_write_info cwi; | |
435 | struct bindata *d; | |
436 | unsigned long length, offset; | |
437 | ||
438 | abfd = bfd_openw (filename, target); | |
439 | if (abfd == NULL) | |
440 | bfd_fatal (filename); | |
441 | ||
442 | if (! bfd_set_format (abfd, bfd_object)) | |
443 | bfd_fatal ("bfd_set_format"); | |
444 | ||
445 | /* FIXME: This is obviously i386 specific. */ | |
446 | if (! bfd_set_arch_mach (abfd, bfd_arch_i386, 0)) | |
447 | bfd_fatal ("bfd_set_arch_mach"); | |
448 | ||
449 | if (! bfd_set_file_flags (abfd, HAS_SYMS | HAS_RELOC)) | |
450 | bfd_fatal ("bfd_set_file_flags"); | |
451 | ||
452 | sec = bfd_make_section (abfd, ".rsrc"); | |
453 | if (sec == NULL) | |
454 | bfd_fatal ("bfd_make_section"); | |
455 | ||
456 | if (! bfd_set_section_flags (abfd, sec, | |
457 | (SEC_HAS_CONTENTS | SEC_ALLOC | |
458 | | SEC_LOAD | SEC_DATA))) | |
459 | bfd_fatal ("bfd_set_section_flags"); | |
460 | ||
461 | if (! bfd_set_symtab (abfd, sec->symbol_ptr_ptr, 1)) | |
462 | bfd_fatal ("bfd_set_symtab"); | |
463 | ||
464 | /* Requiring this is probably a bug in BFD. */ | |
465 | sec->output_section = sec; | |
466 | ||
467 | /* The order of data in the .rsrc section is | |
468 | resource directory tables and entries | |
469 | resource directory strings | |
470 | resource data entries | |
471 | actual resource data | |
472 | ||
473 | We build these different types of data in different lists. */ | |
474 | ||
475 | cwi.abfd = abfd; | |
476 | cwi.big_endian = bfd_big_endian (abfd); | |
477 | cwi.sympp = sec->symbol_ptr_ptr; | |
478 | cwi.dirsize = 0; | |
479 | cwi.dirstrsize = 0; | |
480 | cwi.dataentsize = 0; | |
481 | cwi.dirs.d = NULL; | |
482 | cwi.dirs.last = NULL; | |
483 | cwi.dirs.length = 0; | |
484 | cwi.dirstrs.d = NULL; | |
485 | cwi.dirstrs.last = NULL; | |
486 | cwi.dirstrs.length = 0; | |
487 | cwi.dataents.d = NULL; | |
488 | cwi.dataents.last = NULL; | |
489 | cwi.dataents.length = 0; | |
490 | cwi.resources.d = NULL; | |
491 | cwi.resources.last = NULL; | |
492 | cwi.resources.length = 0; | |
493 | cwi.relocs = NULL; | |
494 | cwi.reloc_count = 0; | |
495 | ||
496 | /* Work out the sizes of the resource directory entries, so that we | |
497 | know the various offsets we will need. */ | |
498 | coff_bin_sizes (resources, &cwi); | |
499 | ||
500 | /* Force the directory strings to be 32 bit aligned. Every other | |
501 | structure is 32 bit aligned anyhow. */ | |
502 | cwi.dirstrsize = (cwi.dirstrsize + 3) &~ 3; | |
503 | ||
504 | /* Actually convert the resources to binary. */ | |
505 | coff_to_bin (resources, &cwi); | |
506 | ||
507 | /* Add another 2 bytes to the directory strings if needed for | |
508 | alignment. */ | |
509 | if ((cwi.dirstrs.length & 3) != 0) | |
510 | { | |
511 | unsigned char *ex; | |
512 | ||
513 | ex = coff_alloc (&cwi.dirstrs, 2); | |
514 | ex[0] = 0; | |
515 | ex[1] = 0; | |
516 | } | |
517 | ||
518 | /* Make sure that the data we built came out to the same size as we | |
519 | calculated initially. */ | |
520 | assert (cwi.dirs.length == cwi.dirsize); | |
521 | assert (cwi.dirstrs.length == cwi.dirstrsize); | |
522 | assert (cwi.dataents.length == cwi.dataentsize); | |
523 | ||
524 | length = (cwi.dirsize | |
525 | + cwi.dirstrsize | |
526 | + cwi.dataentsize | |
527 | + cwi.resources.length); | |
528 | ||
529 | if (! bfd_set_section_size (abfd, sec, length)) | |
530 | bfd_fatal ("bfd_set_section_size"); | |
531 | ||
532 | bfd_set_reloc (abfd, sec, cwi.relocs, cwi.reloc_count); | |
533 | ||
662cc41e ILT |
534 | offset = 0; |
535 | for (d = cwi.dirs.d; d != NULL; d = d->next) | |
536 | { | |
537 | if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) | |
538 | bfd_fatal ("bfd_set_section_contents"); | |
539 | offset += d->length; | |
540 | } | |
541 | for (d = cwi.dirstrs.d; d != NULL; d = d->next) | |
542 | { | |
543 | if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) | |
544 | bfd_fatal ("bfd_set_section_contents"); | |
545 | offset += d->length; | |
546 | } | |
547 | for (d = cwi.dataents.d; d != NULL; d = d->next) | |
548 | { | |
549 | if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) | |
550 | bfd_fatal ("bfd_set_section_contents"); | |
551 | offset += d->length; | |
552 | } | |
553 | for (d = cwi.resources.d; d != NULL; d = d->next) | |
554 | { | |
555 | if (! bfd_set_section_contents (abfd, sec, d->data, offset, d->length)) | |
556 | bfd_fatal ("bfd_set_section_contents"); | |
557 | offset += d->length; | |
558 | } | |
559 | ||
560 | assert (offset == length); | |
561 | ||
562 | if (! bfd_close (abfd)) | |
563 | bfd_fatal ("bfd_close"); | |
d5a7bb53 ILT |
564 | |
565 | /* We allocated the relocs array using malloc. */ | |
566 | free (cwi.relocs); | |
662cc41e ILT |
567 | } |
568 | ||
569 | /* Work out the sizes of the various fixed size resource directory | |
570 | entries. This updates fields in CWI. */ | |
571 | ||
572 | static void | |
573 | coff_bin_sizes (resdir, cwi) | |
574 | const struct res_directory *resdir; | |
575 | struct coff_write_info *cwi; | |
576 | { | |
577 | const struct res_entry *re; | |
578 | ||
579 | cwi->dirsize += sizeof (struct extern_res_directory); | |
580 | ||
581 | for (re = resdir->entries; re != NULL; re = re->next) | |
582 | { | |
583 | cwi->dirsize += sizeof (struct extern_res_entry); | |
584 | ||
585 | if (re->id.named) | |
586 | cwi->dirstrsize += re->id.u.n.length * 2 + 2; | |
587 | ||
588 | if (re->subdir) | |
589 | coff_bin_sizes (re->u.dir, cwi); | |
590 | else | |
591 | cwi->dataentsize += sizeof (struct extern_res_data); | |
592 | } | |
593 | } | |
594 | ||
595 | /* Allocate data for a particular list. */ | |
596 | ||
597 | static unsigned char * | |
598 | coff_alloc (bb, size) | |
599 | struct bindata_build *bb; | |
600 | size_t size; | |
601 | { | |
602 | struct bindata *d; | |
603 | ||
604 | d = (struct bindata *) reswr_alloc (sizeof *d); | |
605 | ||
606 | d->next = NULL; | |
607 | d->data = (unsigned char *) reswr_alloc (size); | |
608 | d->length = size; | |
609 | ||
610 | if (bb->d == NULL) | |
611 | bb->d = d; | |
612 | else | |
613 | bb->last->next = d; | |
614 | bb->last = d; | |
615 | bb->length += size; | |
616 | ||
617 | return d->data; | |
618 | } | |
619 | ||
620 | /* Convert the resource directory RESDIR to binary. */ | |
621 | ||
622 | static void | |
623 | coff_to_bin (resdir, cwi) | |
624 | const struct res_directory *resdir; | |
625 | struct coff_write_info *cwi; | |
626 | { | |
627 | struct extern_res_directory *erd; | |
628 | int ci, cn; | |
629 | const struct res_entry *e; | |
630 | struct extern_res_entry *ere; | |
631 | ||
632 | /* Write out the directory table. */ | |
633 | ||
634 | erd = ((struct extern_res_directory *) | |
635 | coff_alloc (&cwi->dirs, sizeof (*erd))); | |
636 | ||
637 | putcwi_32 (cwi, resdir->characteristics, erd->characteristics); | |
638 | putcwi_32 (cwi, resdir->time, erd->time); | |
639 | putcwi_16 (cwi, resdir->major, erd->major); | |
640 | putcwi_16 (cwi, resdir->minor, erd->minor); | |
641 | ||
642 | ci = 0; | |
643 | cn = 0; | |
644 | for (e = resdir->entries; e != NULL; e = e->next) | |
645 | { | |
646 | if (e->id.named) | |
647 | ++cn; | |
648 | else | |
649 | ++ci; | |
650 | } | |
651 | ||
652 | putcwi_16 (cwi, cn, erd->name_count); | |
653 | putcwi_16 (cwi, ci, erd->id_count); | |
654 | ||
655 | /* Write out the data entries. Note that we allocate space for all | |
656 | the entries before writing them out. That permits a recursive | |
657 | call to work correctly when writing out subdirectories. */ | |
658 | ||
659 | ere = ((struct extern_res_entry *) | |
660 | coff_alloc (&cwi->dirs, (ci + cn) * sizeof (*ere))); | |
661 | for (e = resdir->entries; e != NULL; e = e->next, ere++) | |
662 | { | |
663 | if (! e->id.named) | |
664 | putcwi_32 (cwi, e->id.u.id, ere->name); | |
665 | else | |
666 | { | |
667 | unsigned char *str; | |
668 | int i; | |
669 | ||
670 | /* For some reason existing files seem to have the high bit | |
671 | set on the address of the name, although that is not | |
672 | documented. */ | |
673 | putcwi_32 (cwi, | |
674 | 0x80000000 | (cwi->dirsize + cwi->dirstrs.length), | |
675 | ere->name); | |
676 | ||
677 | str = coff_alloc (&cwi->dirstrs, e->id.u.n.length * 2 + 2); | |
678 | putcwi_16 (cwi, e->id.u.n.length, str); | |
679 | for (i = 0; i < e->id.u.n.length; i++) | |
680 | putcwi_16 (cwi, e->id.u.n.name[i], str + i * 2 + 2); | |
681 | } | |
682 | ||
683 | if (e->subdir) | |
684 | { | |
685 | putcwi_32 (cwi, 0x80000000 | cwi->dirs.length, ere->rva); | |
686 | coff_to_bin (e->u.dir, cwi); | |
687 | } | |
688 | else | |
689 | { | |
690 | putcwi_32 (cwi, | |
691 | cwi->dirsize + cwi->dirstrsize + cwi->dataents.length, | |
692 | ere->rva); | |
693 | ||
694 | coff_res_to_bin (e->u.res, cwi); | |
695 | } | |
696 | } | |
697 | } | |
698 | ||
699 | /* Convert the resource RES to binary. */ | |
700 | ||
701 | static void | |
702 | coff_res_to_bin (res, cwi) | |
703 | const struct res_resource *res; | |
704 | struct coff_write_info *cwi; | |
705 | { | |
706 | arelent *r; | |
707 | struct extern_res_data *erd; | |
708 | struct bindata *d; | |
709 | unsigned long length; | |
710 | ||
711 | /* For some reason, although every other address is a section | |
712 | offset, the address of the resource data itself is an RVA. That | |
713 | means that we need to generate a relocation for it. We allocate | |
714 | the relocs array using malloc so that we can use realloc. FIXME: | |
715 | This relocation handling is correct for the i386, but probably | |
716 | not for any other target. */ | |
717 | ||
718 | r = (arelent *) reswr_alloc (sizeof (arelent)); | |
719 | r->sym_ptr_ptr = cwi->sympp; | |
720 | r->address = cwi->dirsize + cwi->dirstrsize + cwi->dataents.length; | |
721 | r->addend = 0; | |
722 | r->howto = bfd_reloc_type_lookup (cwi->abfd, BFD_RELOC_RVA); | |
723 | if (r->howto == NULL) | |
724 | bfd_fatal ("can't get BFD_RELOC_RVA relocation type"); | |
725 | ||
726 | cwi->relocs = xrealloc (cwi->relocs, | |
727 | (cwi->reloc_count + 2) * sizeof (arelent *)); | |
728 | cwi->relocs[cwi->reloc_count] = r; | |
729 | cwi->relocs[cwi->reloc_count + 1] = NULL; | |
730 | ++cwi->reloc_count; | |
731 | ||
732 | erd = (struct extern_res_data *) coff_alloc (&cwi->dataents, sizeof (*erd)); | |
733 | ||
734 | putcwi_32 (cwi, | |
735 | (cwi->dirsize | |
736 | + cwi->dirstrsize | |
737 | + cwi->dataentsize | |
738 | + cwi->resources.length), | |
739 | erd->rva); | |
740 | putcwi_32 (cwi, res->coff_info.codepage, erd->codepage); | |
741 | putcwi_32 (cwi, res->coff_info.reserved, erd->reserved); | |
742 | ||
743 | d = res_to_bin (res, cwi->big_endian); | |
744 | ||
745 | if (cwi->resources.d == NULL) | |
746 | cwi->resources.d = d; | |
747 | else | |
748 | cwi->resources.last->next = d; | |
749 | ||
750 | length = 0; | |
751 | for (; d->next != NULL; d = d->next) | |
752 | length += d->length; | |
753 | length += d->length; | |
754 | cwi->resources.last = d; | |
755 | cwi->resources.length += length; | |
756 | ||
757 | putcwi_32 (cwi, length, erd->size); | |
758 | ||
759 | /* Force the next resource to have 32 bit alignment. */ | |
760 | ||
761 | if ((length & 3) != 0) | |
762 | { | |
763 | int add; | |
764 | unsigned char *ex; | |
765 | ||
766 | add = 4 - (length & 3); | |
767 | ||
768 | ex = coff_alloc (&cwi->resources, add); | |
769 | memset (ex, 0, add); | |
770 | } | |
771 | } |