Commit | Line | Data |
---|---|---|
d8474a9b PB |
1 | /* copy.c -- copy object file from input to output, optionally massaging it. |
2 | Copyright (C) 1991 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Binutils. | |
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 2 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, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
c074abee | 20 | #include "bfd.h" |
2a5f387b | 21 | #include "sysdep.h" |
5a77e916 | 22 | #include "bucomm.h" |
fc5d6074 | 23 | |
c074abee DHW |
24 | asymbol **sympp; |
25 | char *input_target = NULL; | |
26 | char *output_target = NULL; | |
27 | char *input_filename = NULL; | |
28 | char *output_filename = NULL; | |
29 | ||
30 | ||
31 | static void setup_sections(); | |
32 | static void copy_sections(); | |
c074abee DHW |
33 | static boolean verbose; |
34 | ||
782d7963 PB |
35 | /* This flag distinguishes between strip and copy: |
36 | 1 means this is 'strip'; 0 means this is 'copy'. | |
37 | -1 means if we should use argv[0] to decide. */ | |
38 | extern int is_strip; | |
39 | ||
c074abee DHW |
40 | /* IMPORTS */ |
41 | extern char *program_name; | |
5c670bc1 | 42 | extern char *program_version; |
5a77e916 | 43 | |
c074abee DHW |
44 | |
45 | static | |
46 | void | |
47 | usage() | |
48 | { | |
49 | fprintf(stderr, | |
5c670bc1 | 50 | "Usage %s [-S][-s srcfmt] [-d dtfmt] [-b bothfmts] infile [outfile] [-V]\n", |
c074abee DHW |
51 | program_name); |
52 | exit(1); | |
53 | } | |
54 | ||
55 | ||
56 | /* Create a temp file in the same directory as supplied */ | |
57 | static | |
58 | char * | |
59 | make_tempname(filename) | |
60 | char *filename; | |
61 | { | |
62 | static char template[] = "stXXXXXX"; | |
63 | char *tmpname; | |
64 | char * slash = strrchr( filename, '/' ); | |
65 | if (slash != (char *)NULL){ | |
66 | *slash = 0; | |
67 | tmpname = xmalloc(strlen(filename) + sizeof(template) + 1 ); | |
68 | strcpy(tmpname, filename); | |
69 | strcat(tmpname, "/" ); | |
70 | strcat(tmpname, template); | |
71 | mktemp(tmpname ); | |
72 | *slash = '/'; | |
73 | } else { | |
74 | tmpname = xmalloc(sizeof(template)); | |
75 | strcpy(tmpname, template); | |
76 | mktemp(tmpname); | |
77 | } | |
78 | return tmpname; | |
79 | } | |
80 | ||
81 | /* | |
82 | All the symbols have been read in and point to their owning input section. | |
83 | They have been relocated to that they are all relative to the base of | |
84 | their owning section. On the way out, all the symbols will be relocated to | |
85 | their new location in the output file, through some complex sums. | |
86 | ||
87 | */ | |
88 | static void | |
89 | mangle_sections(ibfd, obfd) | |
90 | bfd *ibfd; | |
91 | bfd *obfd; | |
92 | { | |
93 | asection *current = ibfd->sections; | |
94 | for (; current != NULL; current = current->next) { | |
95 | current->output_section = bfd_get_section_by_name(obfd, current->name); | |
96 | current->output_offset = 0; | |
97 | } | |
98 | } | |
99 | ||
100 | static | |
101 | void | |
102 | copy_object(ibfd, obfd) | |
103 | bfd *ibfd; | |
104 | bfd *obfd; | |
105 | { | |
106 | ||
107 | unsigned int symcount; | |
108 | ||
109 | ||
110 | if (!bfd_set_format(obfd, bfd_get_format(ibfd))) | |
111 | bfd_fatal(output_filename); | |
112 | ||
113 | ||
114 | if (verbose) | |
115 | printf("copy from %s(%s) to %s(%s)\n", | |
116 | ibfd->filename, ibfd->xvec->name, | |
117 | obfd->filename, obfd->xvec->name); | |
118 | ||
23565c68 SC |
119 | if ((bfd_set_start_address(obfd, bfd_get_start_address(ibfd)) == false) |
120 | || | |
c074abee | 121 | (bfd_set_file_flags(obfd, (bfd_get_file_flags(ibfd) & |
23565c68 SC |
122 | (HAS_LINENO | HAS_DEBUG | |
123 | HAS_RELOC | HAS_SYMS | D_PAGED | | |
124 | HAS_LOCALS))) == false)) { | |
125 | bfd_fatal(bfd_get_filename(ibfd)); | |
126 | } | |
c074abee DHW |
127 | |
128 | /* Copy architecture of input file to output file */ | |
21214e8e SC |
129 | if (!bfd_set_arch_mach(obfd, bfd_get_arch(ibfd), |
130 | bfd_get_mach(ibfd))) { | |
c074abee | 131 | fprintf(stderr, "Output file cannot represent architecture %s\n", |
21214e8e SC |
132 | bfd_printable_arch_mach(bfd_get_arch(ibfd), |
133 | bfd_get_mach(ibfd))); | |
c074abee DHW |
134 | } |
135 | if (!bfd_set_format(obfd, bfd_get_format(ibfd))) | |
136 | { | |
137 | bfd_fatal(ibfd->filename); | |
138 | } | |
139 | ||
140 | sympp = (asymbol **) xmalloc(get_symtab_upper_bound(ibfd)); | |
141 | symcount = bfd_canonicalize_symtab(ibfd, sympp); | |
142 | ||
782d7963 | 143 | bfd_set_symtab(obfd, sympp, is_strip ? 0 : symcount); |
c074abee DHW |
144 | |
145 | /* | |
146 | bfd mandates that all output sections be created and sizes set before | |
147 | any output is done. Thus, we traverse all sections twice. | |
148 | */ | |
149 | bfd_map_over_sections(ibfd, setup_sections, (void *) obfd); | |
150 | bfd_map_over_sections(ibfd, copy_sections, (void *) obfd); | |
151 | mangle_sections(ibfd, obfd); | |
152 | } | |
153 | static | |
154 | char * | |
155 | cat(a,b,c) | |
156 | char *a; | |
157 | char *b; | |
158 | char *c; | |
159 | { | |
160 | int size = strlen(a) + strlen(b) + strlen(c); | |
161 | char *r = xmalloc(size+1); | |
162 | strcpy(r,a); | |
163 | strcat(r,b); | |
164 | strcat(r,c); | |
165 | return r; | |
166 | } | |
167 | ||
168 | static void | |
169 | copy_archive(ibfd, obfd) | |
170 | bfd *ibfd; | |
171 | bfd *obfd; | |
172 | { | |
1417a2cd | 173 | bfd **ptr = &obfd->archive_head; |
c074abee DHW |
174 | bfd *this_element; |
175 | /* Read each archive element in turn from the input, copy the | |
176 | contents to a temp file, and keep the temp file handle */ | |
ad19c0a2 | 177 | char *dir = cat("./#",make_tempname(""),"cd"); |
c074abee DHW |
178 | |
179 | /* Make a temp directory to hold the contents */ | |
180 | mkdir(dir,0777); | |
181 | obfd->has_armap = ibfd->has_armap; | |
182 | this_element = bfd_openr_next_archived_file(ibfd, NULL); | |
ad19c0a2 | 183 | ibfd->archive_head = this_element; |
c074abee DHW |
184 | while (this_element != (bfd *)NULL) { |
185 | ||
186 | /* Create an output file for this member */ | |
187 | char *output_name = cat(dir, "/",this_element->filename); | |
188 | bfd *output_bfd = bfd_openw(output_name, output_target); | |
ad19c0a2 | 189 | |
c074abee DHW |
190 | if (!bfd_set_format(obfd, bfd_get_format(ibfd))) |
191 | bfd_fatal(output_filename); | |
192 | ||
193 | if (output_bfd == (bfd *)NULL) { | |
194 | bfd_fatal(output_name); | |
195 | } | |
196 | if (bfd_check_format(this_element, bfd_object) == true) { | |
197 | copy_object(this_element, output_bfd); | |
198 | } | |
199 | ||
200 | bfd_close(output_bfd); | |
201 | /* Now open the newly output file and attatch to our list */ | |
202 | output_bfd = bfd_openr(output_name, output_target); | |
203 | /* Mark it for deletion */ | |
204 | ||
205 | *ptr = output_bfd; | |
206 | ||
1417a2cd | 207 | ptr = &output_bfd->next; |
ad19c0a2 DHW |
208 | this_element->next = bfd_openr_next_archived_file(ibfd, this_element); |
209 | this_element = this_element->next; | |
c074abee DHW |
210 | |
211 | } | |
212 | *ptr = (bfd *)NULL; | |
213 | ||
214 | if (!bfd_close(obfd)) | |
215 | bfd_fatal(output_filename); | |
216 | ||
ad19c0a2 DHW |
217 | /* Now delete all the files that we opened. |
218 | Construct their names again, unfortunately, but so what; | |
219 | we're about to exit anyway. */ | |
c074abee DHW |
220 | for (this_element = ibfd->archive_head; |
221 | this_element != (bfd *)NULL; | |
222 | this_element = this_element->next) | |
223 | { | |
224 | unlink(cat(dir,"/",this_element->filename)); | |
225 | } | |
ad19c0a2 | 226 | rmdir(dir); |
c074abee DHW |
227 | if (!bfd_close(ibfd)) |
228 | bfd_fatal(input_filename); | |
229 | ||
230 | } | |
231 | ||
232 | static | |
617cd571 | 233 | void |
c074abee DHW |
234 | copy_file(input_filename, output_filename) |
235 | char *input_filename; | |
236 | char *output_filename; | |
237 | { | |
617cd571 | 238 | bfd *ibfd; |
c074abee | 239 | |
617cd571 SC |
240 | ibfd = bfd_openr(input_filename, input_target); |
241 | if (ibfd == NULL) | |
242 | bfd_fatal(input_filename); | |
c074abee | 243 | |
617cd571 SC |
244 | if (bfd_check_format(ibfd, bfd_object)) { |
245 | bfd * obfd = bfd_openw(output_filename, output_target); | |
246 | if (obfd == NULL) | |
247 | bfd_fatal(output_filename); | |
c074abee | 248 | |
617cd571 | 249 | copy_object(ibfd, obfd); |
c074abee | 250 | |
782d7963 PB |
251 | if (ibfd->flags & EXEC_P) |
252 | obfd->flags |= EXEC_P; | |
617cd571 SC |
253 | if (!bfd_close(obfd)) |
254 | bfd_fatal(output_filename); | |
c074abee | 255 | |
617cd571 SC |
256 | if (!bfd_close(ibfd)) |
257 | bfd_fatal(input_filename); | |
258 | } | |
259 | else if (bfd_check_format(ibfd, bfd_archive)) { | |
260 | bfd * obfd = bfd_openw(output_filename, output_target); | |
261 | if (obfd == NULL) | |
262 | bfd_fatal(output_filename); | |
263 | copy_archive(ibfd, obfd); | |
264 | } | |
c074abee DHW |
265 | } |
266 | ||
267 | ||
268 | ||
269 | /** Actually do the work */ | |
270 | static void | |
271 | setup_sections(ibfd, isection, obfd) | |
272 | bfd *ibfd; | |
273 | sec_ptr isection; | |
274 | bfd *obfd; | |
275 | { | |
276 | sec_ptr osection; | |
277 | char *err; | |
782d7963 PB |
278 | |
279 | osection = bfd_get_section_by_name(obfd, bfd_section_name(ibfd, isection)); | |
c074abee | 280 | if (osection == NULL) { |
782d7963 PB |
281 | osection = bfd_make_section(obfd, bfd_section_name(ibfd, isection)); |
282 | if (osection == NULL) { | |
283 | err = "making"; | |
284 | goto loser; | |
285 | } | |
c074abee DHW |
286 | } |
287 | ||
288 | if (!bfd_set_section_size(obfd, | |
289 | osection, | |
290 | bfd_section_size(ibfd, isection))) { | |
291 | err = "size"; | |
292 | goto loser; | |
293 | } | |
294 | ||
295 | if (bfd_set_section_vma(obfd, | |
296 | osection, | |
297 | bfd_section_vma(ibfd, isection)) | |
298 | == false) { | |
299 | err = "vma"; | |
300 | goto loser; | |
301 | } /* on error */ | |
302 | ||
303 | if (bfd_set_section_alignment(obfd, | |
304 | osection, | |
305 | bfd_section_alignment(ibfd, isection)) | |
306 | == false) { | |
307 | err = "alignment"; | |
308 | goto loser; | |
309 | } /* on error */ | |
310 | ||
311 | if (!bfd_set_section_flags(obfd, osection, | |
312 | bfd_get_section_flags(ibfd, isection))) { | |
313 | err = "flags"; | |
314 | goto loser; | |
315 | } | |
316 | ||
317 | /* All went well */ | |
318 | return; | |
319 | ||
320 | loser: | |
321 | fprintf(stderr, "%s: file \"%s\", section \"%s\": error in %s: %s\n", | |
322 | program_name, | |
323 | bfd_get_filename(ibfd), bfd_section_name(ibfd, isection), | |
324 | err, bfd_errmsg(bfd_error)); | |
325 | exit(1); | |
326 | } /* setup_sections() */ | |
327 | ||
b473cf19 SC |
328 | /* |
329 | Copy all the section related data from an input section | |
330 | to an output section | |
331 | ||
332 | If stripping then don't copy any relocation info | |
333 | */ | |
c074abee DHW |
334 | static void |
335 | copy_sections(ibfd, isection, obfd) | |
336 | bfd *ibfd; | |
337 | sec_ptr isection; | |
338 | bfd *obfd; | |
339 | { | |
c074abee | 340 | |
b473cf19 SC |
341 | arelent **relpp; |
342 | int relcount; | |
343 | sec_ptr osection; | |
fc5d6074 | 344 | bfd_size_type size; |
b473cf19 SC |
345 | osection = bfd_get_section_by_name(obfd, |
346 | bfd_section_name(ibfd, isection)); | |
347 | ||
d20f480f | 348 | size = bfd_get_section_size_before_reloc(isection); |
b473cf19 SC |
349 | |
350 | if (size == 0) | |
351 | return; | |
352 | ||
5a77e916 | 353 | if (is_strip || bfd_get_reloc_upper_bound(ibfd, isection) == 0) |
b473cf19 SC |
354 | { |
355 | bfd_set_reloc(obfd, osection, (arelent **)NULL, 0); | |
356 | } | |
357 | else | |
358 | { | |
5a77e916 | 359 | relpp = (arelent **) xmalloc(bfd_get_reloc_upper_bound(ibfd, isection)); |
b473cf19 SC |
360 | relcount = bfd_canonicalize_reloc(ibfd, isection, relpp, sympp); |
361 | bfd_set_reloc(obfd, osection, relpp, relcount); | |
362 | } | |
c074abee | 363 | |
d20f480f SC |
364 | isection->_cooked_size = isection->_raw_size; |
365 | isection->reloc_done =true; | |
366 | ||
c074abee | 367 | |
b473cf19 SC |
368 | if (bfd_get_section_flags(ibfd, isection) & SEC_HAS_CONTENTS) |
369 | { | |
fc5d6074 | 370 | PTR memhunk = (PTR) xmalloc((unsigned)size); |
c074abee | 371 | |
fc5d6074 | 372 | if (!bfd_get_section_contents(ibfd, isection, memhunk, (file_ptr) 0, size)) |
b473cf19 | 373 | bfd_fatal(bfd_get_filename(ibfd)); |
c074abee | 374 | |
fc5d6074 | 375 | if (!bfd_set_section_contents(obfd, osection, memhunk, (file_ptr)0, size)) |
b473cf19 SC |
376 | bfd_fatal(bfd_get_filename(obfd)); |
377 | free(memhunk); | |
c074abee | 378 | } |
b473cf19 SC |
379 | |
380 | ||
c074abee DHW |
381 | } |
382 | int | |
383 | main(argc, argv) | |
384 | int argc; | |
385 | char *argv[]; | |
386 | { | |
617cd571 | 387 | int i; |
5c670bc1 | 388 | int show_version; |
617cd571 | 389 | program_name = argv[0]; |
5c670bc1 | 390 | show_version = 0; |
617cd571 | 391 | |
21214e8e SC |
392 | bfd_init(); |
393 | ||
782d7963 PB |
394 | if (is_strip < 0) { |
395 | i = strlen (program_name); | |
396 | is_strip = (i >= 5 && strcmp(program_name+i-5,"strip")); | |
617cd571 SC |
397 | } |
398 | ||
399 | for (i = 1; i < argc; i++) | |
400 | { | |
401 | if (argv[i][0] == '-') { | |
402 | switch (argv[i][1]) { | |
5c670bc1 RS |
403 | case 'V': |
404 | show_version = true; | |
405 | break; | |
617cd571 SC |
406 | case 'v': |
407 | verbose = true; | |
408 | break; | |
409 | case 'b': | |
410 | i++; | |
411 | input_target = output_target = argv[i]; | |
412 | break; | |
413 | case 'S': | |
782d7963 | 414 | is_strip = 1; |
617cd571 SC |
415 | break; |
416 | case 's': | |
417 | i++; | |
418 | input_target = argv[i]; | |
419 | break; | |
420 | case 'd': | |
421 | i++; | |
422 | output_target = argv[i]; | |
423 | break; | |
424 | default: | |
425 | usage(); | |
c074abee | 426 | } |
617cd571 SC |
427 | } |
428 | else { | |
429 | if (input_filename) { | |
430 | output_filename = argv[i]; | |
c074abee | 431 | } |
617cd571 SC |
432 | else { |
433 | input_filename = argv[i]; | |
c074abee | 434 | } |
617cd571 SC |
435 | } |
436 | } | |
437 | ||
5c670bc1 RS |
438 | if (show_version) |
439 | printf ("%s version %s\n", program_name, program_version); | |
440 | ||
617cd571 SC |
441 | if (input_filename == (char *) NULL) |
442 | usage(); | |
443 | ||
444 | if (output_target == (char *) NULL) | |
445 | output_target = input_target; | |
c074abee | 446 | |
617cd571 SC |
447 | /* If there is no destination file then create a temp and rename |
448 | the result into the input */ | |
c074abee | 449 | |
617cd571 SC |
450 | if (output_filename == (char *)NULL) { |
451 | char * tmpname = make_tempname(input_filename); | |
452 | copy_file(input_filename, tmpname); | |
453 | output_filename = input_filename; | |
454 | rename(tmpname, input_filename); | |
455 | } | |
456 | else { | |
457 | copy_file(input_filename, output_filename); | |
458 | } | |
782d7963 | 459 | return 0; |
c074abee | 460 | } |