1 /* bucomm.c -- Bin Utils COMmon code.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
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 /* We might put this in a library someday so it could be dynamically
23 loaded, but for now it's not necessary. */
24
25 #include "bfd.h"
26 #include "bfdver.h"
27 #include "libiberty.h"
28 #include "bucomm.h"
29 #include "filenames.h"
30 #include "libbfd.h"
31
32 #include <sys/stat.h>
33 #include <time.h> /* ctime, maybe time_t */
34
35 #ifndef HAVE_TIME_T_IN_TIME_H
36 #ifndef HAVE_TIME_T_IN_TYPES_H
37 typedef long time_t;
38 #endif
39 #endif
40
41 static const char * endian_string (enum bfd_endian);
42 static int display_target_list (void);
43 static int display_info_table (int, int);
44 static int display_target_tables (void);
45
46 /* Error reporting. */
47
48 char *program_name;
49
50 void
bfd_nonfatal(const char * string)51 bfd_nonfatal (const char *string)
52 {
53 const char *errmsg = bfd_errmsg (bfd_get_error ());
54
55 if (string)
56 fprintf (stderr, "%s: %s: %s\n", program_name, string, errmsg);
57 else
58 fprintf (stderr, "%s: %s\n", program_name, errmsg);
59 }
60
61 void
bfd_fatal(const char * string)62 bfd_fatal (const char *string)
63 {
64 bfd_nonfatal (string);
65 xexit (1);
66 }
67
68 void
report(const char * format,va_list args)69 report (const char * format, va_list args)
70 {
71 fprintf (stderr, "%s: ", program_name);
72 vfprintf (stderr, format, args);
73 putc ('\n', stderr);
74 }
75
76 void
fatal(const char * format,...)77 fatal VPARAMS ((const char *format, ...))
78 {
79 VA_OPEN (args, format);
80 VA_FIXEDARG (args, const char *, format);
81
82 report (format, args);
83 VA_CLOSE (args);
84 xexit (1);
85 }
86
87 void
non_fatal(const char * format,...)88 non_fatal VPARAMS ((const char *format, ...))
89 {
90 VA_OPEN (args, format);
91 VA_FIXEDARG (args, const char *, format);
92
93 report (format, args);
94 VA_CLOSE (args);
95 }
96
97 /* Set the default BFD target based on the configured target. Doing
98 this permits the binutils to be configured for a particular target,
99 and linked against a shared BFD library which was configured for a
100 different target. */
101
102 void
set_default_bfd_target(void)103 set_default_bfd_target (void)
104 {
105 /* The macro TARGET is defined by Makefile. */
106 const char *target = TARGET;
107
108 if (! bfd_set_default_target (target))
109 fatal (_("can't set BFD default target to `%s': %s"),
110 target, bfd_errmsg (bfd_get_error ()));
111 }
112
113 /* After a FALSE return from bfd_check_format_matches with
114 bfd_get_error () == bfd_error_file_ambiguously_recognized, print
115 the possible matching targets. */
116
117 void
list_matching_formats(char ** p)118 list_matching_formats (char **p)
119 {
120 fprintf (stderr, _("%s: Matching formats:"), program_name);
121 while (*p)
122 fprintf (stderr, " %s", *p++);
123 fputc ('\n', stderr);
124 }
125
126 /* List the supported targets. */
127
128 void
list_supported_targets(const char * name,FILE * f)129 list_supported_targets (const char *name, FILE *f)
130 {
131 int t;
132 const char **targ_names = bfd_target_list ();
133
134 if (name == NULL)
135 fprintf (f, _("Supported targets:"));
136 else
137 fprintf (f, _("%s: supported targets:"), name);
138
139 for (t = 0; targ_names[t] != NULL; t++)
140 fprintf (f, " %s", targ_names[t]);
141 fprintf (f, "\n");
142 free (targ_names);
143 }
144
145 /* List the supported architectures. */
146
147 void
list_supported_architectures(const char * name,FILE * f)148 list_supported_architectures (const char *name, FILE *f)
149 {
150 const char **arch;
151
152 if (name == NULL)
153 fprintf (f, _("Supported architectures:"));
154 else
155 fprintf (f, _("%s: supported architectures:"), name);
156
157 for (arch = bfd_arch_list (); *arch; arch++)
158 fprintf (f, " %s", *arch);
159 fprintf (f, "\n");
160 }
161
162 /* The length of the longest architecture name + 1. */
163 #define LONGEST_ARCH sizeof ("powerpc:common")
164
165 static const char *
endian_string(enum bfd_endian endian)166 endian_string (enum bfd_endian endian)
167 {
168 switch (endian)
169 {
170 case BFD_ENDIAN_BIG: return "big endian";
171 case BFD_ENDIAN_LITTLE: return "little endian";
172 default: return "endianness unknown";
173 }
174 }
175
176 /* List the targets that BFD is configured to support, each followed
177 by its endianness and the architectures it supports. */
178
179 static int
display_target_list(void)180 display_target_list (void)
181 {
182 char *dummy_name;
183 int t;
184 int ret = 1;
185
186 dummy_name = make_temp_file (NULL);
187 for (t = 0; bfd_target_vector[t]; t++)
188 {
189 const bfd_target *p = bfd_target_vector[t];
190 bfd *abfd = bfd_openw (dummy_name, p->name);
191 int a;
192
193 printf ("%s\n (header %s, data %s)\n", p->name,
194 endian_string (p->header_byteorder),
195 endian_string (p->byteorder));
196
197 if (abfd == NULL)
198 {
199 bfd_nonfatal (dummy_name);
200 ret = 0;
201 continue;
202 }
203
204 if (! bfd_set_format (abfd, bfd_object))
205 {
206 if (bfd_get_error () != bfd_error_invalid_operation)
207 {
208 bfd_nonfatal (p->name);
209 ret = 0;
210 }
211 bfd_close_all_done (abfd);
212 continue;
213 }
214
215 for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)
216 if (bfd_set_arch_mach (abfd, (enum bfd_architecture) a, 0))
217 printf (" %s\n",
218 bfd_printable_arch_mach ((enum bfd_architecture) a, 0));
219 bfd_close_all_done (abfd);
220 }
221 unlink (dummy_name);
222 free (dummy_name);
223
224 return ret;
225 }
226
227 /* Print a table showing which architectures are supported for entries
228 FIRST through LAST-1 of bfd_target_vector (targets across,
229 architectures down). */
230
231 static int
display_info_table(int first,int last)232 display_info_table (int first, int last)
233 {
234 int t;
235 int a;
236 int ret = 1;
237 char *dummy_name;
238
239 /* Print heading of target names. */
240 printf ("\n%*s", (int) LONGEST_ARCH, " ");
241 for (t = first; t < last && bfd_target_vector[t]; t++)
242 printf ("%s ", bfd_target_vector[t]->name);
243 putchar ('\n');
244
245 dummy_name = make_temp_file (NULL);
246 for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)
247 if (strcmp (bfd_printable_arch_mach (a, 0), "UNKNOWN!") != 0)
248 {
249 printf ("%*s ", (int) LONGEST_ARCH - 1,
250 bfd_printable_arch_mach (a, 0));
251 for (t = first; t < last && bfd_target_vector[t]; t++)
252 {
253 const bfd_target *p = bfd_target_vector[t];
254 bfd_boolean ok = TRUE;
255 bfd *abfd = bfd_openw (dummy_name, p->name);
256
257 if (abfd == NULL)
258 {
259 bfd_nonfatal (p->name);
260 ret = 0;
261 ok = FALSE;
262 }
263
264 if (ok)
265 {
266 if (! bfd_set_format (abfd, bfd_object))
267 {
268 if (bfd_get_error () != bfd_error_invalid_operation)
269 {
270 bfd_nonfatal (p->name);
271 ret = 0;
272 }
273 ok = FALSE;
274 }
275 }
276
277 if (ok)
278 {
279 if (! bfd_set_arch_mach (abfd, a, 0))
280 ok = FALSE;
281 }
282
283 if (ok)
284 printf ("%s ", p->name);
285 else
286 {
287 int l = strlen (p->name);
288 while (l--)
289 putchar ('-');
290 putchar (' ');
291 }
292 if (abfd != NULL)
293 bfd_close_all_done (abfd);
294 }
295 putchar ('\n');
296 }
297 unlink (dummy_name);
298 free (dummy_name);
299
300 return ret;
301 }
302
303 /* Print tables of all the target-architecture combinations that
304 BFD has been configured to support. */
305
306 static int
display_target_tables(void)307 display_target_tables (void)
308 {
309 int t;
310 int columns;
311 int ret = 1;
312 char *colum;
313
314 columns = 0;
315 colum = getenv ("COLUMNS");
316 if (colum != NULL)
317 columns = atoi (colum);
318 if (columns == 0)
319 columns = 80;
320
321 t = 0;
322 while (bfd_target_vector[t] != NULL)
323 {
324 int oldt = t, wid;
325
326 wid = LONGEST_ARCH + strlen (bfd_target_vector[t]->name) + 1;
327 ++t;
328 while (wid < columns && bfd_target_vector[t] != NULL)
329 {
330 int newwid;
331
332 newwid = wid + strlen (bfd_target_vector[t]->name) + 1;
333 if (newwid >= columns)
334 break;
335 wid = newwid;
336 ++t;
337 }
338 if (! display_info_table (oldt, t))
339 ret = 0;
340 }
341
342 return ret;
343 }
344
345 int
display_info(void)346 display_info (void)
347 {
348 printf (_("BFD header file version %s\n"), BFD_VERSION_STRING);
349 if (! display_target_list () || ! display_target_tables ())
350 return 1;
351 else
352 return 0;
353 }
354
355 /* Display the archive header for an element as if it were an ls -l listing:
356
357 Mode User\tGroup\tSize\tDate Name */
358
359 void
print_arelt_descr(FILE * file,bfd * abfd,bfd_boolean verbose)360 print_arelt_descr (FILE *file, bfd *abfd, bfd_boolean verbose)
361 {
362 struct stat buf;
363
364 if (verbose)
365 {
366 if (bfd_stat_arch_elt (abfd, &buf) == 0)
367 {
368 char modebuf[11];
369 char timebuf[40];
370 time_t when = buf.st_mtime;
371 const char *ctime_result = (const char *) ctime (&when);
372
373 /* POSIX format: skip weekday and seconds from ctime output. */
374 sprintf (timebuf, "%.12s %.4s", ctime_result + 4, ctime_result + 20);
375
376 mode_string (buf.st_mode, modebuf);
377 modebuf[10] = '\0';
378 /* POSIX 1003.2/D11 says to skip first character (entry type). */
379 fprintf (file, "%s %ld/%ld %6ld %s ", modebuf + 1,
380 (long) buf.st_uid, (long) buf.st_gid,
381 (long) buf.st_size, timebuf);
382 }
383 }
384
385 fprintf (file, "%s\n", bfd_get_filename (abfd));
386 }
387
388 /* Return the name of a temporary file in the same directory as FILENAME. */
389
390 char *
make_tempname(char * filename,int isdir)391 make_tempname (char *filename, int isdir)
392 {
393 static char template[] = "stXXXXXX";
394 char *tmpname;
395 char *slash = strrchr (filename, '/');
396 char c;
397
398 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
399 {
400 /* We could have foo/bar\\baz, or foo\\bar, or d:bar. */
401 char *bslash = strrchr (filename, '\\');
402 if (slash == NULL || (bslash != NULL && bslash > slash))
403 slash = bslash;
404 if (slash == NULL && filename[0] != '\0' && filename[1] == ':')
405 slash = filename + 1;
406 }
407 #endif
408
409 if (slash != (char *) NULL)
410 {
411 c = *slash;
412 *slash = 0;
413 tmpname = xmalloc (strlen (filename) + sizeof (template) + 2);
414 strcpy (tmpname, filename);
415 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
416 /* If tmpname is "X:", appending a slash will make it a root
417 directory on drive X, which is NOT the same as the current
418 directory on drive X. */
419 if (tmpname[1] == ':' && tmpname[2] == '\0')
420 strcat (tmpname, ".");
421 #endif
422 strcat (tmpname, "/");
423 strcat (tmpname, template);
424 }
425 else
426 {
427 tmpname = xmalloc (sizeof (template));
428 strcpy (tmpname, template);
429 }
430
431 if (isdir)
432 {
433 if (mkdtemp (tmpname) == (char *) NULL)
434 tmpname = NULL;
435 }
436 else
437 {
438 int fd;
439
440 fd = mkstemp (tmpname);
441 if (fd == -1)
442 tmpname = NULL;
443 else
444 close (fd);
445 }
446 if (slash != (char *) NULL)
447 *slash = c;
448
449 return tmpname;
450 }
451
452 /* Parse a string into a VMA, with a fatal error if it can't be
453 parsed. */
454
455 bfd_vma
parse_vma(const char * s,const char * arg)456 parse_vma (const char *s, const char *arg)
457 {
458 bfd_vma ret;
459 const char *end;
460
461 ret = bfd_scan_vma (s, &end, 0);
462
463 if (*end != '\0')
464 fatal (_("%s: bad number: %s"), arg, s);
465
466 return ret;
467 }
468
469 /* Returns the size of the named file. If the file does not
470 exist, or if it is not a real file, then a suitable non-fatal
471 error message is printed and zero is returned. */
472
473 off_t
get_file_size(const char * file_name)474 get_file_size (const char * file_name)
475 {
476 struct stat statbuf;
477
478 if (stat (file_name, &statbuf) < 0)
479 {
480 if (errno == ENOENT)
481 non_fatal (_("'%s': No such file"), file_name);
482 else
483 non_fatal (_("Warning: could not locate '%s'. reason: %s"),
484 file_name, strerror (errno));
485 }
486 else if (! S_ISREG (statbuf.st_mode))
487 non_fatal (_("Warning: '%s' is not an ordinary file"), file_name);
488 else
489 return statbuf.st_size;
490
491 return 0;
492 }
493