Commit | Line | Data |
---|---|---|
c0367ba5 | 1 | /* objcopy.c -- copy object file from input to output, optionally massaging it. |
f7b839f7 | 2 | Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc. |
c0367ba5 | 3 | |
46050fe4 ILT |
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 | \f | |
c0367ba5 ILT |
20 | #include "bfd.h" |
21 | #include "sysdep.h" | |
22 | #include "bucomm.h" | |
23 | #include <getopt.h> | |
6c7ed084 | 24 | #include "libiberty.h" |
c0367ba5 | 25 | |
6c7ed084 ILT |
26 | static bfd_vma parse_vma PARAMS ((const char *, const char *)); |
27 | static void setup_section PARAMS ((bfd *, asection *, PTR)); | |
28 | static void copy_section PARAMS ((bfd *, asection *, PTR)); | |
596d99ba ILT |
29 | static void get_sections PARAMS ((bfd *, asection *, PTR)); |
30 | static int compare_section_vma PARAMS ((const PTR, const PTR)); | |
4af19c61 KR |
31 | static void add_strip_symbol PARAMS ((const char *)); |
32 | static int is_strip_symbol PARAMS ((const char *)); | |
33 | static unsigned int filter_symbols | |
34 | PARAMS ((bfd *, asymbol **, asymbol **, long)); | |
6c7ed084 | 35 | static void mark_symbols_used_in_relocations PARAMS ((bfd *, asection *, PTR)); |
c0367ba5 | 36 | |
46050fe4 | 37 | #define nonfatal(s) {bfd_nonfatal(s); status = 1; return;} |
c0367ba5 | 38 | |
46050fe4 ILT |
39 | static asymbol **isympp = NULL; /* Input symbols */ |
40 | static asymbol **osympp = NULL; /* Output symbols that survive stripping */ | |
f7b839f7 DM |
41 | |
42 | /* If `copy_byte' >= 0, copy only that byte of every `interleave' bytes. */ | |
43 | static int copy_byte = -1; | |
44 | static int interleave = 4; | |
45 | ||
46050fe4 | 46 | static boolean verbose; /* Print file and target names. */ |
f7b839f7 | 47 | static int status = 0; /* Exit status. */ |
c0367ba5 ILT |
48 | |
49 | enum strip_action | |
46050fe4 ILT |
50 | { |
51 | strip_undef, | |
52 | strip_none, /* don't strip */ | |
53 | strip_debug, /* strip all debugger symbols */ | |
54 | strip_all /* strip all symbols */ | |
55 | }; | |
c0367ba5 ILT |
56 | |
57 | /* Which symbols to remove. */ | |
46050fe4 | 58 | static enum strip_action strip_symbols; |
c0367ba5 ILT |
59 | |
60 | enum locals_action | |
46050fe4 ILT |
61 | { |
62 | locals_undef, | |
63 | locals_start_L, /* discard locals starting with L */ | |
64 | locals_all /* discard all locals */ | |
65 | }; | |
66 | ||
67 | /* Which local symbols to remove. Overrides strip_all. */ | |
68 | static enum locals_action discard_locals; | |
69 | ||
6c7ed084 ILT |
70 | /* Structure used to hold lists of sections and actions to take. */ |
71 | ||
72 | struct section_list | |
73 | { | |
74 | /* Next section to adjust. */ | |
75 | struct section_list *next; | |
76 | /* Section name. */ | |
77 | const char *name; | |
78 | /* Whether this entry was used. */ | |
79 | boolean used; | |
80 | /* Remaining fields only used if not on remove_sections list. */ | |
81 | /* Whether to adjust or set VMA. */ | |
82 | boolean adjust; | |
83 | /* Amount to adjust by or set to. */ | |
84 | bfd_vma val; | |
85 | }; | |
86 | ||
87 | /* List of sections to remove. */ | |
88 | ||
89 | static struct section_list *remove_sections; | |
90 | ||
91 | /* Adjustments to the start address. */ | |
92 | static bfd_vma adjust_start = 0; | |
93 | static boolean set_start_set = false; | |
94 | static bfd_vma set_start; | |
95 | ||
96 | /* Adjustments to section VMA's. */ | |
97 | static bfd_vma adjust_section_vma = 0; | |
98 | static struct section_list *adjust_sections; | |
99 | ||
596d99ba ILT |
100 | /* Filling gaps between sections. */ |
101 | static boolean gap_fill_set = false; | |
87a15686 ILT |
102 | static bfd_byte gap_fill = 0; |
103 | ||
104 | /* Pad to a given address. */ | |
105 | static boolean pad_to_set = false; | |
106 | static bfd_vma pad_to; | |
596d99ba | 107 | |
46050fe4 ILT |
108 | /* Options to handle if running as "strip". */ |
109 | ||
110 | static struct option strip_options[] = | |
c0367ba5 | 111 | { |
46050fe4 ILT |
112 | {"discard-all", no_argument, 0, 'x'}, |
113 | {"discard-locals", no_argument, 0, 'X'}, | |
f7b839f7 | 114 | {"format", required_argument, 0, 'F'}, /* Obsolete */ |
46050fe4 | 115 | {"help", no_argument, 0, 'h'}, |
46050fe4 | 116 | {"input-format", required_argument, 0, 'I'}, /* Obsolete */ |
f7b839f7 | 117 | {"input-target", required_argument, 0, 'I'}, |
46050fe4 | 118 | {"output-format", required_argument, 0, 'O'}, /* Obsolete */ |
f7b839f7 | 119 | {"output-target", required_argument, 0, 'O'}, |
6c7ed084 | 120 | {"remove-section", required_argument, 0, 'R'}, |
f7b839f7 DM |
121 | {"strip-all", no_argument, 0, 's'}, |
122 | {"strip-debug", no_argument, 0, 'S'}, | |
4af19c61 | 123 | {"strip-symbol", required_argument, 0, 'N'}, |
46050fe4 | 124 | {"target", required_argument, 0, 'F'}, |
46050fe4 | 125 | {"verbose", no_argument, 0, 'v'}, |
f7b839f7 | 126 | {"version", no_argument, 0, 'V'}, |
46050fe4 | 127 | {0, no_argument, 0, 0} |
c0367ba5 ILT |
128 | }; |
129 | ||
46050fe4 | 130 | /* Options to handle if running as "objcopy". */ |
c0367ba5 | 131 | |
6c7ed084 ILT |
132 | /* 150 isn't special; it's just an arbitrary non-ASCII char value. */ |
133 | ||
134 | #define OPTION_ADJUST_START 150 | |
135 | #define OPTION_ADJUST_VMA (OPTION_ADJUST_START + 1) | |
136 | #define OPTION_ADJUST_SECTION_VMA (OPTION_ADJUST_VMA + 1) | |
137 | #define OPTION_ADJUST_WARNINGS (OPTION_ADJUST_SECTION_VMA + 1) | |
596d99ba ILT |
138 | #define OPTION_GAP_FILL (OPTION_ADJUST_WARNINGS + 1) |
139 | #define OPTION_NO_ADJUST_WARNINGS (OPTION_GAP_FILL + 1) | |
87a15686 ILT |
140 | #define OPTION_PAD_TO (OPTION_NO_ADJUST_WARNINGS + 1) |
141 | #define OPTION_SET_START (OPTION_PAD_TO + 1) | |
6c7ed084 | 142 | |
46050fe4 ILT |
143 | static struct option copy_options[] = |
144 | { | |
6c7ed084 ILT |
145 | {"adjust-start", required_argument, 0, OPTION_ADJUST_START}, |
146 | {"adjust-vma", required_argument, 0, OPTION_ADJUST_VMA}, | |
147 | {"adjust-section-vma", required_argument, 0, OPTION_ADJUST_SECTION_VMA}, | |
148 | {"adjust-warnings", no_argument, 0, OPTION_ADJUST_WARNINGS}, | |
f7b839f7 | 149 | {"byte", required_argument, 0, 'b'}, |
46050fe4 ILT |
150 | {"discard-all", no_argument, 0, 'x'}, |
151 | {"discard-locals", no_argument, 0, 'X'}, | |
f7b839f7 | 152 | {"format", required_argument, 0, 'F'}, /* Obsolete */ |
596d99ba | 153 | {"gap-fill", required_argument, 0, OPTION_GAP_FILL}, |
46050fe4 | 154 | {"help", no_argument, 0, 'h'}, |
46050fe4 | 155 | {"input-format", required_argument, 0, 'I'}, /* Obsolete */ |
f7b839f7 DM |
156 | {"input-target", required_argument, 0, 'I'}, |
157 | {"interleave", required_argument, 0, 'i'}, | |
6c7ed084 | 158 | {"no-adjust-warnings", no_argument, 0, OPTION_NO_ADJUST_WARNINGS}, |
46050fe4 | 159 | {"output-format", required_argument, 0, 'O'}, /* Obsolete */ |
f7b839f7 | 160 | {"output-target", required_argument, 0, 'O'}, |
87a15686 | 161 | {"pad-to", required_argument, 0, OPTION_PAD_TO}, |
6c7ed084 ILT |
162 | {"remove-section", required_argument, 0, 'R'}, |
163 | {"set-start", required_argument, 0, OPTION_SET_START}, | |
f7b839f7 DM |
164 | {"strip-all", no_argument, 0, 'S'}, |
165 | {"strip-debug", no_argument, 0, 'g'}, | |
4af19c61 | 166 | {"strip-symbol", required_argument, 0, 'N'}, |
46050fe4 | 167 | {"target", required_argument, 0, 'F'}, |
46050fe4 | 168 | {"verbose", no_argument, 0, 'v'}, |
f7b839f7 | 169 | {"version", no_argument, 0, 'V'}, |
46050fe4 | 170 | {0, no_argument, 0, 0} |
c0367ba5 ILT |
171 | }; |
172 | ||
173 | /* IMPORTS */ | |
46050fe4 ILT |
174 | extern char *program_name; |
175 | extern char *program_version; | |
176 | ||
177 | /* This flag distinguishes between strip and objcopy: | |
178 | 1 means this is 'strip'; 0 means this is 'objcopy'. | |
179 | -1 means if we should use argv[0] to decide. */ | |
180 | extern int is_strip; | |
c0367ba5 ILT |
181 | |
182 | ||
46050fe4 ILT |
183 | static void |
184 | copy_usage (stream, status) | |
c0367ba5 ILT |
185 | FILE *stream; |
186 | int status; | |
187 | { | |
46050fe4 | 188 | fprintf (stream, "\ |
f7b839f7 | 189 | Usage: %s [-vVSgxX] [-I bfdname] [-O bfdname] [-F bfdname] [-b byte]\n\ |
6c7ed084 | 190 | [-R section] [-i interleave] [--interleave=interleave] [--byte=byte]\n\ |
46050fe4 ILT |
191 | [--input-target=bfdname] [--output-target=bfdname] [--target=bfdname]\n\ |
192 | [--strip-all] [--strip-debug] [--discard-all] [--discard-locals]\n\ | |
87a15686 ILT |
193 | [--remove-section=section] [--gap-fill=val] [--pad-to=address]\n\ |
194 | [--set-start=val] [--adjust-start=incr] [--adjust-vma=incr]\n\ | |
596d99ba ILT |
195 | [--adjust-section-vma=section{=,+,-}val] [--adjust-warnings]\n\ |
196 | [--no-adjust-warnings] [--verbose] [--version] [--help]\n\ | |
4af19c61 | 197 | [--strip-symbol symbol] [-N symbol]\n\ |
596d99ba | 198 | in-file [out-file]\n", |
f7b839f7 | 199 | program_name); |
46050fe4 | 200 | exit (status); |
c0367ba5 ILT |
201 | } |
202 | ||
46050fe4 ILT |
203 | static void |
204 | strip_usage (stream, status) | |
c0367ba5 ILT |
205 | FILE *stream; |
206 | int status; | |
207 | { | |
46050fe4 | 208 | fprintf (stream, "\ |
6c7ed084 | 209 | Usage: %s [-vVsSgxX] [-I bfdname] [-O bfdname] [-F bfdname] [-R section]\n\ |
46050fe4 ILT |
210 | [--input-target=bfdname] [--output-target=bfdname] [--target=bfdname]\n\ |
211 | [--strip-all] [--strip-debug] [--discard-all] [--discard-locals]\n\ | |
4af19c61 | 212 | [--strip-symbol symbol] [-N symbol]\n\ |
6c7ed084 | 213 | [--remove-section=section] [--verbose] [--version] [--help] file...\n", |
46050fe4 ILT |
214 | program_name); |
215 | exit (status); | |
c0367ba5 ILT |
216 | } |
217 | ||
6c7ed084 ILT |
218 | /* Parse a string into a VMA, with a fatal error if it can't be |
219 | parsed. */ | |
220 | ||
221 | static bfd_vma | |
222 | parse_vma (s, arg) | |
223 | const char *s; | |
224 | const char *arg; | |
225 | { | |
226 | bfd_vma ret; | |
227 | const char *end; | |
228 | ||
229 | ret = bfd_scan_vma (s, &end, 0); | |
230 | if (*end != '\0') | |
231 | { | |
232 | fprintf (stderr, "%s: %s: bad number: %s\n", program_name, arg, s); | |
233 | exit (1); | |
234 | } | |
235 | return ret; | |
236 | } | |
c0367ba5 | 237 | |
46050fe4 | 238 | /* Return the name of a temporary file in the same directory as FILENAME. */ |
c0367ba5 | 239 | |
46050fe4 ILT |
240 | static char * |
241 | make_tempname (filename) | |
242 | char *filename; | |
c0367ba5 | 243 | { |
46050fe4 ILT |
244 | static char template[] = "stXXXXXX"; |
245 | char *tmpname; | |
246 | char *slash = strrchr (filename, '/'); | |
247 | ||
248 | if (slash != (char *) NULL) | |
249 | { | |
250 | *slash = 0; | |
251 | tmpname = xmalloc (strlen (filename) + sizeof (template) + 1); | |
252 | strcpy (tmpname, filename); | |
253 | strcat (tmpname, "/"); | |
254 | strcat (tmpname, template); | |
255 | mktemp (tmpname); | |
256 | *slash = '/'; | |
257 | } | |
258 | else | |
259 | { | |
260 | tmpname = xmalloc (sizeof (template)); | |
261 | strcpy (tmpname, template); | |
262 | mktemp (tmpname); | |
c0367ba5 | 263 | } |
46050fe4 | 264 | return tmpname; |
c0367ba5 ILT |
265 | } |
266 | ||
4af19c61 KR |
267 | /* Make a list of symbols to explicitly strip out. A linked list is |
268 | good enough for a small number from the command line, but this will | |
269 | slow things down a lot if many symbols are being deleted. */ | |
270 | ||
271 | struct symlist | |
272 | { | |
273 | const char *name; | |
274 | struct symlist *next; | |
275 | }; | |
276 | ||
277 | static struct symlist *strip_specific_list = NULL; | |
278 | ||
279 | static void | |
280 | add_strip_symbol (name) | |
281 | const char *name; | |
282 | { | |
283 | struct symlist *tmp_list; | |
284 | ||
285 | tmp_list = (struct symlist *) xmalloc (sizeof (struct symlist)); | |
286 | tmp_list->name = name; | |
287 | tmp_list->next = strip_specific_list; | |
288 | strip_specific_list = tmp_list; | |
289 | } | |
290 | ||
291 | static int | |
292 | is_strip_symbol (name) | |
293 | const char *name; | |
294 | { | |
295 | struct symlist *tmp_list; | |
296 | ||
297 | for (tmp_list = strip_specific_list; tmp_list; tmp_list = tmp_list->next) | |
298 | { | |
299 | if (strcmp (name, tmp_list->name) == 0) | |
300 | return 1; | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
46050fe4 | 305 | /* Choose which symbol entries to copy; put the result in OSYMS. |
c0367ba5 | 306 | We don't copy in place, because that confuses the relocs. |
46050fe4 ILT |
307 | Return the number of symbols to print. */ |
308 | ||
c0367ba5 ILT |
309 | static unsigned int |
310 | filter_symbols (abfd, osyms, isyms, symcount) | |
311 | bfd *abfd; | |
312 | asymbol **osyms, **isyms; | |
ae5d2ff5 | 313 | long symcount; |
c0367ba5 ILT |
314 | { |
315 | register asymbol **from = isyms, **to = osyms; | |
ae5d2ff5 | 316 | long src_count = 0, dst_count = 0; |
c0367ba5 | 317 | |
46050fe4 ILT |
318 | for (; src_count < symcount; src_count++) |
319 | { | |
320 | asymbol *sym = from[src_count]; | |
321 | flagword flags = sym->flags; | |
322 | int keep; | |
c0367ba5 | 323 | |
46050fe4 | 324 | if ((flags & BSF_GLOBAL) /* Keep if external. */ |
77ccab3c | 325 | || (flags & BSF_KEEP) /* Keep if used in a relocation. */ |
6c7ed084 | 326 | || bfd_is_und_section (bfd_get_section (sym)) |
46050fe4 ILT |
327 | || bfd_is_com_section (bfd_get_section (sym))) |
328 | keep = 1; | |
329 | else if ((flags & BSF_DEBUGGING) != 0) /* Debugging symbol. */ | |
330 | keep = strip_symbols != strip_debug; | |
331 | else /* Local symbol. */ | |
332 | keep = discard_locals != locals_all | |
333 | && (discard_locals != locals_start_L || | |
77ccab3c | 334 | ! bfd_is_local_label (abfd, sym)); |
4af19c61 KR |
335 | |
336 | if (keep && is_strip_symbol (bfd_asymbol_name (sym))) | |
337 | keep = 0; | |
338 | ||
46050fe4 ILT |
339 | if (keep) |
340 | to[dst_count++] = sym; | |
c0367ba5 | 341 | } |
c0367ba5 ILT |
342 | |
343 | return dst_count; | |
344 | } | |
345 | ||
f7b839f7 DM |
346 | /* Keep only every `copy_byte'th byte in MEMHUNK, which is *SIZE bytes long. |
347 | Adjust *SIZE. */ | |
348 | ||
349 | void | |
350 | filter_bytes (memhunk, size) | |
5d2f7e30 | 351 | char *memhunk; |
f7b839f7 DM |
352 | bfd_size_type *size; |
353 | { | |
354 | char *from = memhunk + copy_byte, *to = memhunk, *end = memhunk + *size; | |
355 | ||
356 | for (; from < end; from += interleave) | |
357 | *to++ = *from; | |
358 | *size /= interleave; | |
359 | } | |
360 | ||
46050fe4 ILT |
361 | /* Copy object file IBFD onto OBFD. */ |
362 | ||
c0367ba5 | 363 | static void |
46050fe4 ILT |
364 | copy_object (ibfd, obfd) |
365 | bfd *ibfd; | |
366 | bfd *obfd; | |
c0367ba5 | 367 | { |
6c7ed084 | 368 | bfd_vma start; |
ae5d2ff5 | 369 | long symcount; |
596d99ba ILT |
370 | asection **osections = NULL; |
371 | bfd_size_type *gaps = NULL; | |
372 | bfd_size_type max_gap = 0; | |
c0367ba5 | 373 | |
46050fe4 ILT |
374 | if (!bfd_set_format (obfd, bfd_get_format (ibfd))) |
375 | { | |
376 | nonfatal (bfd_get_filename (obfd)); | |
377 | } | |
c0367ba5 | 378 | |
46050fe4 ILT |
379 | if (verbose) |
380 | printf ("copy from %s(%s) to %s(%s)\n", | |
381 | bfd_get_filename(ibfd), bfd_get_target(ibfd), | |
382 | bfd_get_filename(obfd), bfd_get_target(obfd)); | |
c0367ba5 | 383 | |
6c7ed084 ILT |
384 | if (set_start_set) |
385 | start = set_start; | |
386 | else | |
a6afc090 | 387 | start = bfd_get_start_address (ibfd); |
6c7ed084 ILT |
388 | start += adjust_start; |
389 | ||
390 | if (!bfd_set_start_address (obfd, start) | |
46050fe4 ILT |
391 | || !bfd_set_file_flags (obfd, |
392 | (bfd_get_file_flags (ibfd) | |
393 | & bfd_applicable_file_flags (obfd)))) | |
394 | { | |
395 | nonfatal (bfd_get_filename (ibfd)); | |
396 | } | |
c0367ba5 | 397 | |
46050fe4 ILT |
398 | /* Copy architecture of input file to output file */ |
399 | if (!bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
400 | bfd_get_mach (ibfd))) | |
401 | { | |
402 | fprintf (stderr, "Output file cannot represent architecture %s\n", | |
403 | bfd_printable_arch_mach (bfd_get_arch (ibfd), | |
404 | bfd_get_mach (ibfd))); | |
405 | } | |
406 | if (!bfd_set_format (obfd, bfd_get_format (ibfd))) | |
407 | { | |
408 | nonfatal (bfd_get_filename(ibfd)); | |
409 | } | |
c0367ba5 | 410 | |
46050fe4 ILT |
411 | if (isympp) |
412 | free (isympp); | |
413 | if (osympp != isympp) | |
414 | free (osympp); | |
c0367ba5 | 415 | |
77ccab3c JL |
416 | /* bfd mandates that all output sections be created and sizes set before |
417 | any output is done. Thus, we traverse all sections multiple times. */ | |
418 | bfd_map_over_sections (ibfd, setup_section, (void *) obfd); | |
419 | ||
87a15686 | 420 | if (gap_fill_set || pad_to_set) |
596d99ba ILT |
421 | { |
422 | asection **set; | |
423 | unsigned int c, i; | |
424 | ||
87a15686 ILT |
425 | /* We must fill in gaps between the sections and/or we must pad |
426 | the last section to a specified address. We do this by | |
596d99ba | 427 | grabbing a list of the sections, sorting them by VMA, and |
87a15686 ILT |
428 | increasing the section sizes as required to fill the gaps. |
429 | We write out the gap contents below. */ | |
596d99ba ILT |
430 | |
431 | c = bfd_count_sections (obfd); | |
432 | osections = (asection **) xmalloc (c * sizeof (asection *)); | |
433 | set = osections; | |
434 | bfd_map_over_sections (obfd, get_sections, (void *) &set); | |
435 | ||
436 | qsort (osections, c, sizeof (asection *), compare_section_vma); | |
437 | ||
438 | gaps = (bfd_size_type *) xmalloc (c * sizeof (bfd_size_type)); | |
87a15686 ILT |
439 | memset (gaps, 0, c * sizeof (bfd_size_type)); |
440 | ||
441 | if (gap_fill_set) | |
442 | { | |
443 | for (i = 0; i < c - 1; i++) | |
444 | { | |
445 | flagword flags; | |
446 | bfd_size_type size; | |
447 | bfd_vma gap_start, gap_stop; | |
448 | ||
449 | flags = bfd_get_section_flags (obfd, osections[i]); | |
450 | if ((flags & SEC_HAS_CONTENTS) == 0 | |
451 | || (flags & SEC_LOAD) == 0) | |
452 | continue; | |
453 | ||
454 | size = bfd_section_size (obfd, osections[i]); | |
455 | gap_start = bfd_section_vma (obfd, osections[i]) + size; | |
456 | gap_stop = bfd_section_vma (obfd, osections[i + 1]); | |
457 | if (gap_start < gap_stop) | |
458 | { | |
459 | if (! bfd_set_section_size (obfd, osections[i], | |
460 | size + (gap_stop - gap_start))) | |
461 | { | |
462 | fprintf (stderr, "%s: Can't fill gap after %s: %s\n", | |
463 | program_name, | |
464 | bfd_get_section_name (obfd, osections[i]), | |
465 | bfd_errmsg (bfd_get_error())); | |
466 | status = 1; | |
467 | break; | |
468 | } | |
469 | gaps[i] = gap_stop - gap_start; | |
470 | if (max_gap < gap_stop - gap_start) | |
471 | max_gap = gap_stop - gap_start; | |
472 | } | |
473 | } | |
474 | } | |
475 | ||
476 | if (pad_to_set) | |
596d99ba | 477 | { |
87a15686 | 478 | bfd_vma vma; |
596d99ba | 479 | bfd_size_type size; |
87a15686 ILT |
480 | |
481 | vma = bfd_section_vma (obfd, osections[c - 1]); | |
482 | size = bfd_section_size (obfd, osections[c - 1]); | |
483 | if (vma + size < pad_to) | |
596d99ba | 484 | { |
87a15686 ILT |
485 | if (! bfd_set_section_size (obfd, osections[c - 1], |
486 | pad_to - vma)) | |
596d99ba | 487 | { |
87a15686 | 488 | fprintf (stderr, "%s: Can't add padding to %s: %s\n", |
596d99ba | 489 | program_name, |
87a15686 ILT |
490 | bfd_get_section_name (obfd, osections[c - 1]), |
491 | bfd_errmsg (bfd_get_error ())); | |
596d99ba | 492 | status = 1; |
596d99ba | 493 | } |
87a15686 ILT |
494 | else |
495 | { | |
496 | gaps[c - 1] = pad_to - (vma + size); | |
497 | if (max_gap < pad_to - (vma + size)) | |
498 | max_gap = pad_to - (vma + size); | |
499 | } | |
596d99ba | 500 | } |
87a15686 | 501 | } |
596d99ba ILT |
502 | } |
503 | ||
77ccab3c JL |
504 | /* Symbol filtering must happen after the output sections have |
505 | been created, but before their contents are set. */ | |
46050fe4 ILT |
506 | if (strip_symbols == strip_all && discard_locals == locals_undef) |
507 | { | |
508 | osympp = isympp = NULL; | |
509 | symcount = 0; | |
c0367ba5 | 510 | } |
46050fe4 ILT |
511 | else |
512 | { | |
ae5d2ff5 ILT |
513 | long symsize; |
514 | ||
515 | symsize = bfd_get_symtab_upper_bound (ibfd); | |
516 | if (symsize < 0) | |
517 | { | |
518 | nonfatal (bfd_get_filename (ibfd)); | |
519 | } | |
520 | ||
521 | osympp = isympp = (asymbol **) xmalloc (symsize); | |
46050fe4 | 522 | symcount = bfd_canonicalize_symtab (ibfd, isympp); |
ae5d2ff5 ILT |
523 | if (symcount < 0) |
524 | { | |
525 | nonfatal (bfd_get_filename (ibfd)); | |
526 | } | |
46050fe4 | 527 | |
4af19c61 KR |
528 | if (strip_symbols == strip_debug |
529 | || discard_locals != locals_undef | |
530 | || strip_specific_list) | |
c0367ba5 | 531 | { |
77ccab3c JL |
532 | /* Mark symbols used in output relocations so that they |
533 | are kept, even if they are local labels or static symbols. | |
534 | ||
535 | Note we iterate over the input sections examining their | |
536 | relocations since the relocations for the output sections | |
537 | haven't been set yet. mark_symbols_used_in_relocations will | |
538 | ignore input sections which have no corresponding output | |
539 | section. */ | |
540 | bfd_map_over_sections (ibfd, | |
541 | mark_symbols_used_in_relocations, | |
6c7ed084 | 542 | (PTR)isympp); |
46050fe4 ILT |
543 | osympp = (asymbol **) xmalloc (symcount * sizeof (asymbol *)); |
544 | symcount = filter_symbols (ibfd, osympp, isympp, symcount); | |
c0367ba5 | 545 | } |
46050fe4 ILT |
546 | } |
547 | ||
548 | bfd_set_symtab (obfd, osympp, symcount); | |
c0367ba5 | 549 | |
77ccab3c | 550 | /* This has to happen after the symbol table has been set. */ |
f7b839f7 | 551 | bfd_map_over_sections (ibfd, copy_section, (void *) obfd); |
6f9077cd | 552 | |
87a15686 | 553 | if (gap_fill_set || pad_to_set) |
596d99ba ILT |
554 | { |
555 | bfd_byte *buf; | |
556 | int c, i; | |
557 | ||
558 | /* Fill in the gaps. */ | |
559 | ||
560 | if (max_gap > 8192) | |
561 | max_gap = 8192; | |
562 | buf = (bfd_byte *) xmalloc (max_gap); | |
563 | memset (buf, gap_fill, max_gap); | |
564 | ||
565 | c = bfd_count_sections (obfd); | |
87a15686 | 566 | for (i = 0; i < c; i++) |
596d99ba ILT |
567 | { |
568 | if (gaps[i] != 0) | |
569 | { | |
570 | bfd_size_type left; | |
571 | file_ptr off; | |
572 | ||
573 | left = gaps[i]; | |
574 | off = bfd_section_size (obfd, osections[i]) - left; | |
575 | while (left > 0) | |
576 | { | |
577 | bfd_size_type now; | |
578 | ||
579 | if (left > 8192) | |
580 | now = 8192; | |
581 | else | |
582 | now = left; | |
583 | if (! bfd_set_section_contents (obfd, osections[i], buf, | |
584 | off, now)) | |
585 | { | |
586 | nonfatal (bfd_get_filename (obfd)); | |
596d99ba ILT |
587 | } |
588 | left -= now; | |
589 | off += now; | |
590 | } | |
591 | } | |
592 | } | |
593 | } | |
594 | ||
6f9077cd JM |
595 | /* Allow the BFD backend to copy any private data it understands |
596 | from the input BFD to the output BFD. This is done last to | |
597 | permit the routine to look at the filtered symbol table, which is | |
598 | important for the ECOFF code at least. */ | |
599 | if (!bfd_copy_private_bfd_data (ibfd, obfd)) | |
600 | { | |
601 | fprintf (stderr, "%s: %s: error copying private BFD data: %s\n", | |
602 | program_name, bfd_get_filename (obfd), | |
603 | bfd_errmsg (bfd_get_error ())); | |
604 | status = 1; | |
605 | return; | |
606 | } | |
c0367ba5 | 607 | } |
46050fe4 ILT |
608 | |
609 | static char * | |
610 | cat (a, b, c) | |
611 | char *a; | |
612 | char *b; | |
613 | char *c; | |
c0367ba5 | 614 | { |
46050fe4 ILT |
615 | size_t size = strlen (a) + strlen (b) + strlen (c); |
616 | char *r = xmalloc (size + 1); | |
617 | ||
618 | strcpy (r, a); | |
619 | strcat (r, b); | |
620 | strcat (r, c); | |
621 | return r; | |
c0367ba5 ILT |
622 | } |
623 | ||
46050fe4 ILT |
624 | /* Read each archive element in turn from IBFD, copy the |
625 | contents to temp file, and keep the temp file handle. */ | |
626 | ||
627 | static void | |
628 | copy_archive (ibfd, obfd, output_target) | |
629 | bfd *ibfd; | |
630 | bfd *obfd; | |
631 | char *output_target; | |
c0367ba5 | 632 | { |
87a15686 ILT |
633 | struct name_list |
634 | { | |
635 | struct name_list *next; | |
636 | char *name; | |
637 | } *list, *l; | |
46050fe4 ILT |
638 | bfd **ptr = &obfd->archive_head; |
639 | bfd *this_element; | |
90f6517d | 640 | char *dir = make_tempname (bfd_get_filename (obfd)); |
46050fe4 ILT |
641 | |
642 | /* Make a temp directory to hold the contents. */ | |
90f6517d | 643 | mkdir (dir, 0700); |
46050fe4 ILT |
644 | obfd->has_armap = ibfd->has_armap; |
645 | ||
87a15686 ILT |
646 | list = NULL; |
647 | ||
46050fe4 | 648 | this_element = bfd_openr_next_archived_file (ibfd, NULL); |
46050fe4 ILT |
649 | while (this_element != (bfd *) NULL) |
650 | { | |
651 | /* Create an output file for this member. */ | |
652 | char *output_name = cat (dir, "/", bfd_get_filename(this_element)); | |
653 | bfd *output_bfd = bfd_openw (output_name, output_target); | |
87a15686 ILT |
654 | bfd *last_element; |
655 | ||
656 | l = (struct name_list *) xmalloc (sizeof (struct name_list)); | |
657 | l->name = output_name; | |
658 | l->next = list; | |
659 | list = l; | |
46050fe4 ILT |
660 | |
661 | if (output_bfd == (bfd *) NULL) | |
662 | { | |
663 | nonfatal (output_name); | |
c0367ba5 | 664 | } |
46050fe4 ILT |
665 | if (!bfd_set_format (obfd, bfd_get_format (ibfd))) |
666 | { | |
667 | nonfatal (bfd_get_filename (obfd)); | |
c0367ba5 ILT |
668 | } |
669 | ||
46050fe4 ILT |
670 | if (bfd_check_format (this_element, bfd_object) == true) |
671 | { | |
672 | copy_object (this_element, output_bfd); | |
673 | } | |
c0367ba5 | 674 | |
46050fe4 | 675 | bfd_close (output_bfd); |
87a15686 ILT |
676 | |
677 | /* Open the newly output file and attach to our list. */ | |
46050fe4 | 678 | output_bfd = bfd_openr (output_name, output_target); |
c0367ba5 | 679 | |
46050fe4 ILT |
680 | *ptr = output_bfd; |
681 | ptr = &output_bfd->next; | |
87a15686 ILT |
682 | |
683 | last_element = this_element; | |
684 | ||
685 | this_element = bfd_openr_next_archived_file (ibfd, last_element); | |
686 | ||
687 | bfd_close (last_element); | |
c0367ba5 | 688 | } |
46050fe4 | 689 | *ptr = (bfd *) NULL; |
c0367ba5 | 690 | |
46050fe4 ILT |
691 | if (!bfd_close (obfd)) |
692 | { | |
693 | nonfatal (bfd_get_filename (obfd)); | |
c0367ba5 | 694 | } |
c0367ba5 | 695 | |
87a15686 ILT |
696 | /* Delete all the files that we opened. */ |
697 | for (l = list; l != NULL; l = l->next) | |
698 | unlink (l->name); | |
46050fe4 | 699 | rmdir (dir); |
87a15686 | 700 | |
46050fe4 ILT |
701 | if (!bfd_close (ibfd)) |
702 | { | |
703 | nonfatal (bfd_get_filename (ibfd)); | |
704 | } | |
c0367ba5 ILT |
705 | } |
706 | ||
46050fe4 ILT |
707 | /* The top-level control. */ |
708 | ||
709 | static void | |
710 | copy_file (input_filename, output_filename, input_target, output_target) | |
711 | char *input_filename; | |
712 | char *output_filename; | |
713 | char *input_target; | |
714 | char *output_target; | |
c0367ba5 | 715 | { |
46050fe4 | 716 | bfd *ibfd; |
cef35d48 | 717 | char **matching; |
c0367ba5 ILT |
718 | |
719 | /* To allow us to do "strip *" without dying on the first | |
720 | non-object file, failures are nonfatal. */ | |
721 | ||
46050fe4 | 722 | ibfd = bfd_openr (input_filename, input_target); |
c0367ba5 ILT |
723 | if (ibfd == NULL) |
724 | { | |
46050fe4 | 725 | nonfatal (input_filename); |
c0367ba5 ILT |
726 | } |
727 | ||
cef35d48 DM |
728 | if (bfd_check_format (ibfd, bfd_archive)) |
729 | { | |
6c7ed084 ILT |
730 | bfd *obfd; |
731 | ||
732 | /* bfd_get_target does not return the correct value until | |
733 | bfd_check_format succeeds. */ | |
734 | if (output_target == NULL) | |
735 | output_target = bfd_get_target (ibfd); | |
736 | ||
737 | obfd = bfd_openw (output_filename, output_target); | |
cef35d48 DM |
738 | if (obfd == NULL) |
739 | { | |
740 | nonfatal (output_filename); | |
741 | } | |
742 | copy_archive (ibfd, obfd, output_target); | |
743 | } | |
744 | else if (bfd_check_format_matches (ibfd, bfd_object, &matching)) | |
46050fe4 | 745 | { |
6c7ed084 ILT |
746 | bfd *obfd; |
747 | ||
748 | /* bfd_get_target does not return the correct value until | |
749 | bfd_check_format succeeds. */ | |
750 | if (output_target == NULL) | |
751 | output_target = bfd_get_target (ibfd); | |
752 | ||
753 | obfd = bfd_openw (output_filename, output_target); | |
46050fe4 ILT |
754 | if (obfd == NULL) |
755 | { | |
756 | nonfatal (output_filename); | |
757 | } | |
c0367ba5 | 758 | |
46050fe4 | 759 | copy_object (ibfd, obfd); |
c0367ba5 | 760 | |
46050fe4 ILT |
761 | if (!bfd_close (obfd)) |
762 | { | |
763 | nonfatal (output_filename); | |
764 | } | |
765 | ||
766 | if (!bfd_close (ibfd)) | |
767 | { | |
768 | nonfatal (input_filename); | |
769 | } | |
770 | } | |
cef35d48 | 771 | else |
46050fe4 | 772 | { |
cef35d48 | 773 | bfd_nonfatal (input_filename); |
c9563567 | 774 | if (bfd_get_error () == bfd_error_file_ambiguously_recognized) |
46050fe4 | 775 | { |
cef35d48 DM |
776 | list_matching_formats (matching); |
777 | free (matching); | |
46050fe4 | 778 | } |
cef35d48 | 779 | status = 1; |
46050fe4 ILT |
780 | } |
781 | } | |
782 | ||
783 | /* Create a section in OBFD with the same name and attributes | |
784 | as ISECTION in IBFD. */ | |
c0367ba5 | 785 | |
c0367ba5 | 786 | static void |
6c7ed084 | 787 | setup_section (ibfd, isection, obfdarg) |
46050fe4 ILT |
788 | bfd *ibfd; |
789 | sec_ptr isection; | |
6c7ed084 | 790 | PTR obfdarg; |
c0367ba5 | 791 | { |
6c7ed084 ILT |
792 | bfd *obfd = (bfd *) obfdarg; |
793 | struct section_list *p; | |
46050fe4 | 794 | sec_ptr osection; |
6c7ed084 | 795 | bfd_vma vma; |
46050fe4 ILT |
796 | char *err; |
797 | ||
798 | if ((bfd_get_section_flags (ibfd, isection) & SEC_DEBUGGING) != 0 | |
799 | && (strip_symbols == strip_debug | |
800 | || strip_symbols == strip_all | |
801 | || discard_locals == locals_all)) | |
802 | return; | |
803 | ||
6c7ed084 ILT |
804 | for (p = remove_sections; p != NULL; p = p->next) |
805 | { | |
806 | if (strcmp (p->name, bfd_section_name (ibfd, isection)) == 0) | |
807 | { | |
808 | p->used = true; | |
809 | return; | |
810 | } | |
811 | } | |
812 | ||
77ccab3c | 813 | osection = bfd_make_section_anyway (obfd, bfd_section_name (ibfd, isection)); |
46050fe4 ILT |
814 | if (osection == NULL) |
815 | { | |
77ccab3c JL |
816 | err = "making"; |
817 | goto loser; | |
c0367ba5 ILT |
818 | } |
819 | ||
46050fe4 ILT |
820 | if (!bfd_set_section_size (obfd, |
821 | osection, | |
822 | bfd_section_size (ibfd, isection))) | |
823 | { | |
824 | err = "size"; | |
825 | goto loser; | |
c0367ba5 ILT |
826 | } |
827 | ||
6c7ed084 ILT |
828 | vma = bfd_section_vma (ibfd, isection); |
829 | for (p = adjust_sections; p != NULL; p = p->next) | |
830 | { | |
831 | if (strcmp (p->name, bfd_section_name (ibfd, isection)) == 0) | |
832 | { | |
833 | if (p->adjust) | |
834 | vma += p->val; | |
835 | else | |
836 | vma = p->val; | |
837 | p->used = true; | |
838 | break; | |
839 | } | |
840 | } | |
841 | if (p == NULL) | |
842 | vma += adjust_section_vma; | |
843 | ||
844 | if (! bfd_set_section_vma (obfd, osection, vma)) | |
46050fe4 ILT |
845 | { |
846 | err = "vma"; | |
847 | goto loser; | |
848 | } | |
c0367ba5 | 849 | |
46050fe4 ILT |
850 | if (bfd_set_section_alignment (obfd, |
851 | osection, | |
852 | bfd_section_alignment (ibfd, isection)) | |
853 | == false) | |
854 | { | |
855 | err = "alignment"; | |
856 | goto loser; | |
857 | } | |
c0367ba5 | 858 | |
46050fe4 ILT |
859 | if (!bfd_set_section_flags (obfd, osection, |
860 | bfd_get_section_flags (ibfd, isection))) | |
861 | { | |
862 | err = "flags"; | |
863 | goto loser; | |
c0367ba5 ILT |
864 | } |
865 | ||
c9563567 JL |
866 | /* This used to be mangle_section; we do here to avoid using |
867 | bfd_get_section_by_name since some formats allow multiple | |
868 | sections with the same name. */ | |
869 | isection->output_section = osection; | |
870 | isection->output_offset = 0; | |
871 | ||
77ccab3c JL |
872 | /* Allow the BFD backend to copy any private data it understands |
873 | from the input section to the output section. */ | |
874 | if (!bfd_copy_private_section_data (ibfd, isection, obfd, osection)) | |
875 | { | |
876 | err = "private data"; | |
877 | goto loser; | |
878 | } | |
879 | ||
46050fe4 ILT |
880 | /* All went well */ |
881 | return; | |
c0367ba5 ILT |
882 | |
883 | loser: | |
46050fe4 ILT |
884 | fprintf (stderr, "%s: %s: section `%s': error in %s: %s\n", |
885 | program_name, | |
886 | bfd_get_filename (ibfd), bfd_section_name (ibfd, isection), | |
c9563567 | 887 | err, bfd_errmsg (bfd_get_error ())); |
46050fe4 ILT |
888 | status = 1; |
889 | } | |
890 | ||
891 | /* Copy the data of input section ISECTION of IBFD | |
892 | to an output section with the same name in OBFD. | |
893 | If stripping then don't copy any relocation info. */ | |
894 | ||
c0367ba5 | 895 | static void |
6c7ed084 | 896 | copy_section (ibfd, isection, obfdarg) |
46050fe4 ILT |
897 | bfd *ibfd; |
898 | sec_ptr isection; | |
6c7ed084 | 899 | PTR obfdarg; |
c0367ba5 | 900 | { |
6c7ed084 ILT |
901 | bfd *obfd = (bfd *) obfdarg; |
902 | struct section_list *p; | |
46050fe4 | 903 | arelent **relpp; |
ae5d2ff5 | 904 | long relcount; |
46050fe4 ILT |
905 | sec_ptr osection; |
906 | bfd_size_type size; | |
907 | ||
908 | if ((bfd_get_section_flags (ibfd, isection) & SEC_DEBUGGING) != 0 | |
909 | && (strip_symbols == strip_debug | |
910 | || strip_symbols == strip_all | |
911 | || discard_locals == locals_all)) | |
912 | { | |
913 | return; | |
914 | } | |
c0367ba5 | 915 | |
6c7ed084 ILT |
916 | for (p = remove_sections; p != NULL; p = p->next) |
917 | if (strcmp (p->name, bfd_section_name (ibfd, isection)) == 0) | |
918 | return; | |
919 | ||
77ccab3c | 920 | osection = isection->output_section; |
46050fe4 | 921 | size = bfd_get_section_size_before_reloc (isection); |
c0367ba5 | 922 | |
77ccab3c | 923 | if (size == 0 || osection == 0) |
c0367ba5 ILT |
924 | return; |
925 | ||
ae5d2ff5 ILT |
926 | if (strip_symbols == strip_all) |
927 | bfd_set_reloc (obfd, osection, (arelent **) NULL, 0); | |
46050fe4 | 928 | else |
c0367ba5 | 929 | { |
ae5d2ff5 ILT |
930 | long relsize; |
931 | ||
932 | relsize = bfd_get_reloc_upper_bound (ibfd, isection); | |
933 | if (relsize < 0) | |
934 | { | |
935 | nonfatal (bfd_get_filename (ibfd)); | |
936 | } | |
937 | if (relsize == 0) | |
938 | bfd_set_reloc (obfd, osection, (arelent **) NULL, 0); | |
939 | else | |
940 | { | |
941 | relpp = (arelent **) xmalloc (relsize); | |
942 | relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp); | |
943 | if (relcount < 0) | |
944 | { | |
945 | nonfatal (bfd_get_filename (ibfd)); | |
946 | } | |
947 | bfd_set_reloc (obfd, osection, relpp, relcount); | |
948 | } | |
c0367ba5 ILT |
949 | } |
950 | ||
951 | isection->_cooked_size = isection->_raw_size; | |
46050fe4 | 952 | isection->reloc_done = true; |
c0367ba5 | 953 | |
46050fe4 | 954 | if (bfd_get_section_flags (ibfd, isection) & SEC_HAS_CONTENTS) |
c0367ba5 | 955 | { |
46050fe4 | 956 | PTR memhunk = (PTR) xmalloc ((unsigned) size); |
c0367ba5 | 957 | |
46050fe4 ILT |
958 | if (!bfd_get_section_contents (ibfd, isection, memhunk, (file_ptr) 0, |
959 | size)) | |
960 | { | |
961 | nonfatal (bfd_get_filename (ibfd)); | |
962 | } | |
c0367ba5 | 963 | |
6f9077cd JM |
964 | if (copy_byte >= 0) |
965 | { | |
966 | filter_bytes (memhunk, &size); | |
967 | /* The section has gotten smaller. */ | |
968 | if (!bfd_set_section_size (obfd, osection, size)) | |
969 | nonfatal (bfd_get_filename (obfd)); | |
970 | } | |
f7b839f7 | 971 | |
46050fe4 ILT |
972 | if (!bfd_set_section_contents (obfd, osection, memhunk, (file_ptr) 0, |
973 | size)) | |
974 | { | |
975 | nonfatal (bfd_get_filename (obfd)); | |
976 | } | |
977 | free (memhunk); | |
c0367ba5 | 978 | } |
46050fe4 | 979 | } |
c0367ba5 | 980 | |
87a15686 ILT |
981 | /* Get all the sections. This is used when --gap-fill or --pad-to is |
982 | used. */ | |
596d99ba ILT |
983 | |
984 | static void | |
985 | get_sections (obfd, osection, secppparg) | |
986 | bfd *obfd; | |
987 | asection *osection; | |
988 | PTR secppparg; | |
989 | { | |
990 | asection ***secppp = (asection ***) secppparg; | |
991 | ||
992 | **secppp = osection; | |
993 | ++(*secppp); | |
994 | } | |
995 | ||
996 | /* Sort sections by VMA. This is called via qsort, and is used when | |
87a15686 ILT |
997 | --gap-fill or --pad-to is used. We force non loadable or empty |
998 | sections to the front, where they are easier to ignore. */ | |
596d99ba ILT |
999 | |
1000 | static int | |
1001 | compare_section_vma (arg1, arg2) | |
1002 | const PTR arg1; | |
1003 | const PTR arg2; | |
1004 | { | |
1005 | const asection **sec1 = (const asection **) arg1; | |
1006 | const asection **sec2 = (const asection **) arg2; | |
87a15686 ILT |
1007 | flagword flags1, flags2; |
1008 | ||
1009 | /* Sort non loadable sections to the front. */ | |
1010 | flags1 = (*sec1)->flags; | |
1011 | flags2 = (*sec2)->flags; | |
1012 | if ((flags1 & SEC_HAS_CONTENTS) == 0 | |
1013 | || (flags1 & SEC_LOAD) == 0) | |
1014 | { | |
1015 | if ((flags2 & SEC_HAS_CONTENTS) != 0 | |
1016 | && (flags2 & SEC_LOAD) != 0) | |
1017 | return -1; | |
1018 | } | |
1019 | else | |
1020 | { | |
1021 | if ((flags2 & SEC_HAS_CONTENTS) == 0 | |
1022 | || (flags2 & SEC_LOAD) == 0) | |
1023 | return 1; | |
1024 | } | |
596d99ba | 1025 | |
87a15686 | 1026 | /* Sort sections by VMA. */ |
596d99ba ILT |
1027 | if ((*sec1)->vma > (*sec2)->vma) |
1028 | return 1; | |
1029 | else if ((*sec1)->vma < (*sec2)->vma) | |
1030 | return -1; | |
87a15686 ILT |
1031 | |
1032 | /* Sort sections with the same VMA by size. */ | |
1033 | if ((*sec1)->_raw_size > (*sec2)->_raw_size) | |
1034 | return 1; | |
1035 | else if ((*sec1)->_raw_size < (*sec2)->_raw_size) | |
1036 | return -1; | |
1037 | ||
1038 | return 0; | |
596d99ba ILT |
1039 | } |
1040 | ||
77ccab3c JL |
1041 | /* Mark all the symbols which will be used in output relocations with |
1042 | the BSF_KEEP flag so that those symbols will not be stripped. | |
1043 | ||
1044 | Ignore relocations which will not appear in the output file. */ | |
1045 | ||
1046 | static void | |
6c7ed084 | 1047 | mark_symbols_used_in_relocations (ibfd, isection, symbolsarg) |
77ccab3c JL |
1048 | bfd *ibfd; |
1049 | sec_ptr isection; | |
6c7ed084 | 1050 | PTR symbolsarg; |
77ccab3c | 1051 | { |
6c7ed084 | 1052 | asymbol **symbols = (asymbol **) symbolsarg; |
ae5d2ff5 | 1053 | long relsize; |
77ccab3c | 1054 | arelent **relpp; |
ae5d2ff5 | 1055 | long relcount, i; |
77ccab3c JL |
1056 | |
1057 | /* Ignore an input section with no corresponding output section. */ | |
1058 | if (isection->output_section == NULL) | |
1059 | return; | |
1060 | ||
ae5d2ff5 ILT |
1061 | relsize = bfd_get_reloc_upper_bound (ibfd, isection); |
1062 | if (relsize < 0) | |
1063 | bfd_fatal (bfd_get_filename (ibfd)); | |
1064 | ||
1065 | relpp = (arelent **) xmalloc (relsize); | |
77ccab3c | 1066 | relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, symbols); |
ae5d2ff5 ILT |
1067 | if (relcount < 0) |
1068 | bfd_fatal (bfd_get_filename (ibfd)); | |
77ccab3c JL |
1069 | |
1070 | /* Examine each symbol used in a relocation. If it's not one of the | |
1071 | special bfd section symbols, then mark it with BSF_KEEP. */ | |
1072 | for (i = 0; i < relcount; i++) | |
1073 | { | |
6c7ed084 ILT |
1074 | if (*relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol |
1075 | && *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol | |
1076 | && *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol) | |
77ccab3c JL |
1077 | (*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP; |
1078 | } | |
1079 | ||
1080 | if (relpp != NULL) | |
1081 | free (relpp); | |
1082 | } | |
1083 | ||
46050fe4 ILT |
1084 | /* The number of bytes to copy at once. */ |
1085 | #define COPY_BUF 8192 | |
1086 | ||
1087 | /* Copy file FROM to file TO, performing no translations. | |
1088 | Return 0 if ok, -1 if error. */ | |
1089 | ||
1090 | static int | |
1091 | simple_copy (from, to) | |
1092 | char *from, *to; | |
c0367ba5 | 1093 | { |
46050fe4 ILT |
1094 | int fromfd, tofd, nread; |
1095 | char buf[COPY_BUF]; | |
1096 | ||
1097 | fromfd = open (from, O_RDONLY); | |
1098 | if (fromfd < 0) | |
1099 | return -1; | |
1100 | tofd = open (to, O_WRONLY | O_CREAT | O_TRUNC); | |
1101 | if (tofd < 0) | |
1102 | { | |
1103 | close (fromfd); | |
1104 | return -1; | |
1105 | } | |
1106 | while ((nread = read (fromfd, buf, sizeof buf)) > 0) | |
1107 | { | |
1108 | if (write (tofd, buf, nread) != nread) | |
1109 | { | |
1110 | close (fromfd); | |
1111 | close (tofd); | |
1112 | return -1; | |
1113 | } | |
1114 | } | |
1115 | close (fromfd); | |
1116 | close (tofd); | |
1117 | if (nread < 0) | |
1118 | return -1; | |
1119 | return 0; | |
1120 | } | |
c0367ba5 | 1121 | |
46050fe4 ILT |
1122 | #ifndef S_ISLNK |
1123 | #ifdef S_IFLNK | |
1124 | #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
1125 | #else | |
1126 | #define S_ISLNK(m) 0 | |
1127 | #define lstat stat | |
1128 | #endif | |
1129 | #endif | |
1130 | ||
1131 | /* Rename FROM to TO, copying if TO is a link. | |
1132 | Assumes that TO already exists, because FROM is a temp file. | |
1133 | Return 0 if ok, -1 if error. */ | |
1134 | ||
1135 | static int | |
1136 | smart_rename (from, to) | |
1137 | char *from, *to; | |
1138 | { | |
1139 | struct stat s; | |
1140 | int ret = 0; | |
c0367ba5 | 1141 | |
46050fe4 ILT |
1142 | if (lstat (to, &s)) |
1143 | return -1; | |
c0367ba5 | 1144 | |
46050fe4 ILT |
1145 | /* Use rename only if TO is not a symbolic link and has |
1146 | only one hard link. */ | |
1147 | if (!S_ISLNK (s.st_mode) && s.st_nlink == 1) | |
1148 | { | |
1149 | ret = rename (from, to); | |
1150 | if (ret == 0) | |
1151 | { | |
1152 | /* Try to preserve the permission bits and ownership of TO. */ | |
1153 | chmod (to, s.st_mode & 07777); | |
1154 | chown (to, s.st_uid, s.st_gid); | |
1155 | } | |
1156 | } | |
1157 | else | |
1158 | { | |
1159 | ret = simple_copy (from, to); | |
1160 | if (ret == 0) | |
1161 | unlink (from); | |
1162 | } | |
1163 | return ret; | |
1164 | } | |
1165 | ||
1166 | static int | |
1167 | strip_main (argc, argv) | |
1168 | int argc; | |
1169 | char *argv[]; | |
1170 | { | |
1171 | char *input_target = NULL, *output_target = NULL; | |
1172 | boolean show_version = false; | |
1173 | int c, i; | |
1174 | ||
4af19c61 | 1175 | while ((c = getopt_long (argc, argv, "I:O:F:R:sSgxXVvN:", |
46050fe4 ILT |
1176 | strip_options, (int *) 0)) != EOF) |
1177 | { | |
1178 | switch (c) | |
1179 | { | |
1180 | case 'I': | |
1181 | input_target = optarg; | |
704bbd0d | 1182 | break; |
46050fe4 ILT |
1183 | case 'O': |
1184 | output_target = optarg; | |
1185 | break; | |
1186 | case 'F': | |
1187 | input_target = output_target = optarg; | |
1188 | break; | |
6c7ed084 ILT |
1189 | case 'R': |
1190 | { | |
1191 | struct section_list *n; | |
1192 | ||
1193 | n = (struct section_list *) xmalloc (sizeof (struct section_list)); | |
1194 | n->name = optarg; | |
1195 | n->used = false; | |
1196 | n->next = remove_sections; | |
1197 | remove_sections = n; | |
1198 | } | |
1199 | break; | |
46050fe4 | 1200 | case 's': |
c0367ba5 | 1201 | strip_symbols = strip_all; |
46050fe4 ILT |
1202 | break; |
1203 | case 'S': | |
1204 | case 'g': | |
1205 | strip_symbols = strip_debug; | |
1206 | break; | |
4af19c61 KR |
1207 | case 'N': |
1208 | add_strip_symbol (optarg); | |
1209 | break; | |
46050fe4 ILT |
1210 | case 'x': |
1211 | discard_locals = locals_all; | |
1212 | break; | |
1213 | case 'X': | |
1214 | discard_locals = locals_start_L; | |
1215 | break; | |
1216 | case 'v': | |
1217 | verbose = true; | |
1218 | break; | |
1219 | case 'V': | |
1220 | show_version = true; | |
1221 | break; | |
1222 | case 0: | |
1223 | break; /* we've been given a long option */ | |
1224 | case 'h': | |
1225 | strip_usage (stdout, 0); | |
1226 | default: | |
1227 | strip_usage (stderr, 1); | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | if (show_version) | |
1232 | { | |
1233 | printf ("GNU %s version %s\n", program_name, program_version); | |
1234 | exit (0); | |
1235 | } | |
c0367ba5 | 1236 | |
46050fe4 | 1237 | /* Default is to strip all symbols. */ |
4af19c61 KR |
1238 | if (strip_symbols == strip_undef |
1239 | && discard_locals == locals_undef | |
1240 | && strip_specific_list == NULL) | |
46050fe4 ILT |
1241 | strip_symbols = strip_all; |
1242 | ||
1243 | if (output_target == (char *) NULL) | |
1244 | output_target = input_target; | |
1245 | ||
1246 | i = optind; | |
1247 | if (i == argc) | |
1248 | strip_usage (stderr, 1); | |
1249 | ||
1250 | for (; i < argc; i++) | |
1251 | { | |
1252 | int hold_status = status; | |
c0367ba5 | 1253 | |
46050fe4 ILT |
1254 | char *tmpname = make_tempname (argv[i]); |
1255 | status = 0; | |
1256 | copy_file (argv[i], tmpname, input_target, output_target); | |
1257 | if (status == 0) | |
1258 | { | |
1259 | smart_rename (tmpname, argv[i]); | |
1260 | status = hold_status; | |
c0367ba5 | 1261 | } |
46050fe4 ILT |
1262 | else |
1263 | unlink (tmpname); | |
1264 | free (tmpname); | |
1265 | } | |
1266 | ||
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | static int | |
1271 | copy_main (argc, argv) | |
1272 | int argc; | |
1273 | char *argv[]; | |
1274 | { | |
6c7ed084 | 1275 | char *input_filename = NULL, *output_filename = NULL; |
46050fe4 ILT |
1276 | char *input_target = NULL, *output_target = NULL; |
1277 | boolean show_version = false; | |
6c7ed084 | 1278 | boolean adjust_warn = true; |
46050fe4 | 1279 | int c; |
6c7ed084 | 1280 | struct section_list *p; |
46050fe4 | 1281 | |
4af19c61 | 1282 | while ((c = getopt_long (argc, argv, "b:i:I:s:O:d:F:R:SgxXVvN:", |
46050fe4 ILT |
1283 | copy_options, (int *) 0)) != EOF) |
1284 | { | |
1285 | switch (c) | |
1286 | { | |
f7b839f7 DM |
1287 | case 'b': |
1288 | copy_byte = atoi(optarg); | |
1289 | if (copy_byte < 0) | |
1290 | { | |
1291 | fprintf (stderr, "%s: byte number must be non-negative\n", | |
1292 | program_name); | |
1293 | exit (1); | |
1294 | } | |
1295 | break; | |
1296 | case 'i': | |
1297 | interleave = atoi(optarg); | |
1298 | if (interleave < 1) | |
1299 | { | |
1300 | fprintf(stderr, "%s: interleave must be positive\n", | |
1301 | program_name); | |
1302 | exit (1); | |
1303 | } | |
1304 | break; | |
c0367ba5 | 1305 | case 'I': |
46050fe4 | 1306 | case 's': /* "source" - 'I' is preferred */ |
c0367ba5 | 1307 | input_target = optarg; |
704bbd0d | 1308 | break; |
c0367ba5 | 1309 | case 'O': |
46050fe4 | 1310 | case 'd': /* "destination" - 'O' is preferred */ |
c0367ba5 ILT |
1311 | output_target = optarg; |
1312 | break; | |
1313 | case 'F': | |
c0367ba5 ILT |
1314 | input_target = output_target = optarg; |
1315 | break; | |
6c7ed084 ILT |
1316 | case 'R': |
1317 | p = (struct section_list *) xmalloc (sizeof (struct section_list)); | |
1318 | p->name = optarg; | |
1319 | p->used = false; | |
1320 | p->next = remove_sections; | |
1321 | remove_sections = p; | |
1322 | break; | |
c0367ba5 ILT |
1323 | case 'S': |
1324 | strip_symbols = strip_all; | |
1325 | break; | |
1326 | case 'g': | |
1327 | strip_symbols = strip_debug; | |
1328 | break; | |
4af19c61 KR |
1329 | case 'N': |
1330 | add_strip_symbol (optarg); | |
1331 | break; | |
c0367ba5 ILT |
1332 | case 'x': |
1333 | discard_locals = locals_all; | |
1334 | break; | |
1335 | case 'X': | |
1336 | discard_locals = locals_start_L; | |
1337 | break; | |
1338 | case 'v': | |
1339 | verbose = true; | |
1340 | break; | |
1341 | case 'V': | |
1342 | show_version = true; | |
1343 | break; | |
6c7ed084 ILT |
1344 | case OPTION_ADJUST_START: |
1345 | adjust_start = parse_vma (optarg, "--adjust-start"); | |
1346 | break; | |
1347 | case OPTION_ADJUST_SECTION_VMA: | |
1348 | { | |
1349 | const char *s; | |
1350 | int len; | |
1351 | char *name; | |
1352 | ||
1353 | p = (struct section_list *) xmalloc (sizeof (struct section_list)); | |
1354 | s = strchr (optarg, '='); | |
1355 | if (s != NULL) | |
1356 | { | |
1357 | p->adjust = false; | |
1358 | p->val = parse_vma (s + 1, "--adjust-section-vma"); | |
1359 | } | |
1360 | else | |
1361 | { | |
1362 | s = strchr (optarg, '+'); | |
1363 | if (s == NULL) | |
1364 | { | |
1365 | s = strchr (optarg, '-'); | |
1366 | if (s == NULL) | |
1367 | { | |
1368 | fprintf (stderr, | |
1369 | "%s: bad format for --adjust-section-vma\n", | |
1370 | program_name); | |
1371 | exit (1); | |
1372 | } | |
1373 | } | |
1374 | p->adjust = true; | |
1375 | p->val = parse_vma (s + 1, "--adjust-section-vma"); | |
1376 | if (*s == '-') | |
1377 | p->val = - p->val; | |
1378 | } | |
1379 | ||
1380 | len = s - optarg; | |
1381 | name = (char *) xmalloc (len + 1); | |
1382 | strncpy (name, optarg, len); | |
1383 | name[len] = '\0'; | |
1384 | p->name = name; | |
1385 | ||
1386 | p->used = false; | |
1387 | ||
1388 | p->next = adjust_sections; | |
1389 | adjust_sections = p; | |
1390 | } | |
1391 | break; | |
1392 | case OPTION_ADJUST_VMA: | |
1393 | adjust_section_vma = parse_vma (optarg, "--adjust-vma"); | |
1394 | adjust_start = adjust_section_vma; | |
1395 | break; | |
1396 | case OPTION_ADJUST_WARNINGS: | |
1397 | adjust_warn = true; | |
1398 | break; | |
596d99ba ILT |
1399 | case OPTION_GAP_FILL: |
1400 | { | |
1401 | bfd_vma gap_fill_vma; | |
1402 | ||
1403 | gap_fill_vma = parse_vma (optarg, "--gap-fill"); | |
1404 | gap_fill = (bfd_byte) gap_fill_vma; | |
1405 | if ((bfd_vma) gap_fill != gap_fill_vma) | |
1406 | { | |
1407 | fprintf (stderr, "%s: warning: truncating gap-fill from 0x", | |
1408 | program_name); | |
1409 | fprintf_vma (stderr, gap_fill_vma); | |
1410 | fprintf (stderr, "to 0x%x\n", (unsigned int) gap_fill); | |
1411 | } | |
1412 | gap_fill_set = true; | |
1413 | } | |
1414 | break; | |
6c7ed084 ILT |
1415 | case OPTION_NO_ADJUST_WARNINGS: |
1416 | adjust_warn = false; | |
1417 | break; | |
87a15686 ILT |
1418 | case OPTION_PAD_TO: |
1419 | pad_to = parse_vma (optarg, "--pad-to"); | |
1420 | pad_to_set = true; | |
1421 | break; | |
6c7ed084 ILT |
1422 | case OPTION_SET_START: |
1423 | set_start = parse_vma (optarg, "--set-start"); | |
1424 | set_start_set = true; | |
1425 | break; | |
46050fe4 | 1426 | case 0: |
c0367ba5 ILT |
1427 | break; /* we've been given a long option */ |
1428 | case 'h': | |
1429 | copy_usage (stdout, 0); | |
1430 | default: | |
1431 | copy_usage (stderr, 1); | |
46050fe4 ILT |
1432 | } |
1433 | } | |
1434 | ||
1435 | if (show_version) | |
1436 | { | |
1437 | printf ("GNU %s version %s\n", program_name, program_version); | |
1438 | exit (0); | |
1439 | } | |
c0367ba5 | 1440 | |
f7b839f7 DM |
1441 | if (copy_byte >= interleave) |
1442 | { | |
1443 | fprintf (stderr, "%s: byte number must be less than interleave\n", | |
1444 | program_name); | |
1445 | exit (1); | |
1446 | } | |
1447 | ||
46050fe4 ILT |
1448 | if (optind == argc || optind + 2 < argc) |
1449 | copy_usage (stderr, 1); | |
c0367ba5 ILT |
1450 | |
1451 | input_filename = argv[optind]; | |
1452 | if (optind + 1 < argc) | |
46050fe4 | 1453 | output_filename = argv[optind + 1]; |
c0367ba5 ILT |
1454 | |
1455 | /* Default is to strip no symbols. */ | |
1456 | if (strip_symbols == strip_undef && discard_locals == locals_undef) | |
46050fe4 | 1457 | strip_symbols = strip_none; |
c0367ba5 ILT |
1458 | |
1459 | if (output_target == (char *) NULL) | |
1460 | output_target = input_target; | |
1461 | ||
46050fe4 ILT |
1462 | /* If there is no destination file then create a temp and rename |
1463 | the result into the input. */ | |
1464 | ||
1465 | if (output_filename == (char *) NULL) | |
1466 | { | |
1467 | char *tmpname = make_tempname (input_filename); | |
1468 | copy_file (input_filename, tmpname, input_target, output_target); | |
1469 | if (status == 0) | |
1470 | smart_rename (tmpname, input_filename); | |
1471 | else | |
1472 | unlink (tmpname); | |
1473 | } | |
1474 | else | |
1475 | { | |
1476 | copy_file (input_filename, output_filename, input_target, output_target); | |
1477 | } | |
1478 | ||
6c7ed084 ILT |
1479 | if (adjust_warn) |
1480 | { | |
1481 | for (p = adjust_sections; p != NULL; p = p->next) | |
1482 | { | |
1483 | if (! p->used) | |
1484 | { | |
1485 | fprintf (stderr, "%s: warning: --adjust-section-vma %s%c0x", | |
1486 | program_name, p->name, | |
1487 | p->adjust ? '=' : '+'); | |
1488 | fprintf_vma (stderr, p->val); | |
1489 | fprintf (stderr, " never used\n"); | |
1490 | } | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | /* We could issue similar warnings for remove_sections, but I don't | |
1495 | think that would be as useful. */ | |
1496 | ||
c0367ba5 ILT |
1497 | return 0; |
1498 | } | |
46050fe4 ILT |
1499 | |
1500 | int | |
1501 | main (argc, argv) | |
1502 | int argc; | |
1503 | char *argv[]; | |
1504 | { | |
1505 | program_name = argv[0]; | |
704bbd0d | 1506 | xmalloc_set_program_name (program_name); |
46050fe4 ILT |
1507 | strip_symbols = strip_undef; |
1508 | discard_locals = locals_undef; | |
1509 | ||
1510 | bfd_init (); | |
1511 | ||
1512 | if (is_strip < 0) | |
1513 | { | |
1514 | int i = strlen (program_name); | |
87a15686 | 1515 | is_strip = (i >= 5 && strcmp (program_name + i - 5, "strip") == 0); |
46050fe4 ILT |
1516 | } |
1517 | ||
1518 | if (is_strip) | |
1519 | strip_main (argc, argv); | |
1520 | else | |
1521 | copy_main (argc, argv); | |
1522 | ||
1523 | return status; | |
1524 | } |