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252b5132 RH |
1 | /* messages.c - error reporter - |
2 | Copyright (C) 1987, 91, 92, 93, 94, 95, 96, 97, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS 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, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS 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 GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | #include "as.h" | |
22 | ||
23 | #include <stdio.h> | |
24 | #ifdef HAVE_ERRNO_H | |
25 | #include <errno.h> | |
26 | #endif | |
27 | ||
28 | #ifdef USE_STDARG | |
29 | #include <stdarg.h> | |
30 | #endif | |
31 | ||
32 | #ifdef USE_VARARGS | |
33 | #include <varargs.h> | |
34 | #endif | |
35 | ||
36 | #if !defined (USE_STDARG) && !defined (USE_VARARGS) | |
37 | /* Roll our own. */ | |
38 | #define va_alist REST | |
39 | #define va_dcl | |
40 | typedef int * va_list; | |
41 | #define va_start(ARGS) ARGS = &REST | |
42 | #define va_end(ARGS) | |
43 | #endif | |
44 | ||
45 | static void identify PARAMS ((char *)); | |
46 | static void as_show_where PARAMS ((void)); | |
47 | static void as_warn_internal PARAMS ((char *, unsigned int, char *)); | |
48 | static void as_bad_internal PARAMS ((char *, unsigned int, char *)); | |
49 | ||
50 | /* | |
51 | * Despite the rest of the comments in this file, (FIXME-SOON), | |
52 | * here is the current scheme for error messages etc: | |
53 | * | |
54 | * as_fatal() is used when gas is quite confused and | |
55 | * continuing the assembly is pointless. In this case we | |
56 | * exit immediately with error status. | |
57 | * | |
58 | * as_bad() is used to mark errors that result in what we | |
59 | * presume to be a useless object file. Say, we ignored | |
60 | * something that might have been vital. If we see any of | |
61 | * these, assembly will continue to the end of the source, | |
62 | * no object file will be produced, and we will terminate | |
63 | * with error status. The new option, -Z, tells us to | |
64 | * produce an object file anyway but we still exit with | |
65 | * error status. The assumption here is that you don't want | |
66 | * this object file but we could be wrong. | |
67 | * | |
68 | * as_warn() is used when we have an error from which we | |
69 | * have a plausible error recovery. eg, masking the top | |
70 | * bits of a constant that is longer than will fit in the | |
71 | * destination. In this case we will continue to assemble | |
72 | * the source, although we may have made a bad assumption, | |
73 | * and we will produce an object file and return normal exit | |
74 | * status (ie, no error). The new option -X tells us to | |
75 | * treat all as_warn() errors as as_bad() errors. That is, | |
76 | * no object file will be produced and we will exit with | |
77 | * error status. The idea here is that we don't kill an | |
78 | * entire make because of an error that we knew how to | |
79 | * correct. On the other hand, sometimes you might want to | |
80 | * stop the make at these points. | |
81 | * | |
82 | * as_tsktsk() is used when we see a minor error for which | |
83 | * our error recovery action is almost certainly correct. | |
84 | * In this case, we print a message and then assembly | |
85 | * continues as though no error occurred. | |
86 | */ | |
87 | ||
88 | static void | |
89 | identify (file) | |
90 | char *file; | |
91 | { | |
92 | static int identified; | |
93 | if (identified) | |
94 | return; | |
95 | identified++; | |
96 | ||
97 | if (!file) | |
98 | { | |
99 | unsigned int x; | |
100 | as_where (&file, &x); | |
101 | } | |
102 | ||
103 | if (file) | |
104 | fprintf (stderr, "%s: ", file); | |
105 | fprintf (stderr, _("Assembler messages:\n")); | |
106 | } | |
107 | ||
108 | static int warning_count; /* Count of number of warnings issued */ | |
109 | ||
110 | int | |
111 | had_warnings () | |
112 | { | |
113 | return (warning_count); | |
114 | } | |
115 | ||
116 | /* Nonzero if we've hit a 'bad error', and should not write an obj file, | |
117 | and exit with a nonzero error code */ | |
118 | ||
119 | static int error_count; | |
120 | ||
121 | int | |
122 | had_errors () | |
123 | { | |
124 | return (error_count); | |
125 | } | |
126 | ||
127 | ||
128 | /* Print the current location to stderr. */ | |
129 | ||
130 | static void | |
131 | as_show_where () | |
132 | { | |
133 | char *file; | |
134 | unsigned int line; | |
135 | ||
136 | as_where (&file, &line); | |
137 | identify (file); | |
138 | if (file) | |
139 | fprintf (stderr, "%s:%u: ", file, line); | |
140 | } | |
141 | ||
142 | /* | |
143 | * a s _ p e r r o r | |
144 | * | |
145 | * Like perror(3), but with more info. | |
146 | */ | |
147 | ||
148 | void | |
149 | as_perror (gripe, filename) | |
150 | const char *gripe; /* Unpunctuated error theme. */ | |
151 | const char *filename; | |
152 | { | |
153 | const char *errtxt; | |
154 | ||
155 | as_show_where (); | |
156 | fprintf (stderr, gripe, filename); | |
157 | #ifdef BFD_ASSEMBLER | |
158 | errtxt = bfd_errmsg (bfd_get_error ()); | |
159 | #else | |
160 | errtxt = xstrerror (errno); | |
161 | #endif | |
162 | fprintf (stderr, ": %s\n", errtxt); | |
163 | errno = 0; | |
164 | #ifdef BFD_ASSEMBLER | |
165 | bfd_set_error (bfd_error_no_error); | |
166 | #endif | |
167 | } | |
168 | ||
169 | /* | |
170 | * a s _ t s k t s k () | |
171 | * | |
172 | * Send to stderr a string as a warning, and locate warning | |
173 | * in input file(s). | |
174 | * Please only use this for when we have some recovery action. | |
175 | * Please explain in string (which may have '\n's) what recovery was done. | |
176 | */ | |
177 | ||
178 | #ifdef USE_STDARG | |
179 | void | |
180 | as_tsktsk (const char *format,...) | |
181 | { | |
182 | va_list args; | |
183 | ||
184 | as_show_where (); | |
185 | va_start (args, format); | |
186 | vfprintf (stderr, format, args); | |
187 | va_end (args); | |
188 | (void) putc ('\n', stderr); | |
189 | } /* as_tsktsk() */ | |
190 | #else | |
191 | void | |
192 | as_tsktsk (format, va_alist) | |
193 | const char *format; | |
194 | va_dcl | |
195 | { | |
196 | va_list args; | |
197 | ||
198 | as_show_where (); | |
199 | va_start (args); | |
200 | vfprintf (stderr, format, args); | |
201 | va_end (args); | |
202 | (void) putc ('\n', stderr); | |
203 | } /* as_tsktsk() */ | |
204 | #endif /* not NO_STDARG */ | |
205 | ||
206 | /* The common portion of as_warn and as_warn_where. */ | |
207 | ||
208 | static void | |
209 | as_warn_internal (file, line, buffer) | |
210 | char *file; | |
211 | unsigned int line; | |
212 | char *buffer; | |
213 | { | |
214 | ++warning_count; | |
215 | ||
216 | if (file == NULL) | |
217 | as_where (&file, &line); | |
218 | ||
219 | identify (file); | |
220 | if (file) | |
221 | fprintf (stderr, "%s:%u: ", file, line); | |
222 | fprintf (stderr, _("Warning: ")); | |
223 | fputs (buffer, stderr); | |
224 | (void) putc ('\n', stderr); | |
225 | #ifndef NO_LISTING | |
226 | listing_warning (buffer); | |
227 | #endif | |
228 | } | |
229 | ||
230 | /* | |
231 | * a s _ w a r n () | |
232 | * | |
233 | * Send to stderr a string as a warning, and locate warning | |
234 | * in input file(s). | |
235 | * Please only use this for when we have some recovery action. | |
236 | * Please explain in string (which may have '\n's) what recovery was done. | |
237 | */ | |
238 | ||
239 | #ifdef USE_STDARG | |
240 | void | |
241 | as_warn (const char *format,...) | |
242 | { | |
243 | va_list args; | |
244 | char buffer[2000]; | |
245 | ||
246 | if (!flag_no_warnings) | |
247 | { | |
248 | va_start (args, format); | |
249 | vsprintf (buffer, format, args); | |
250 | va_end (args); | |
251 | as_warn_internal ((char *) NULL, 0, buffer); | |
252 | } | |
253 | } /* as_warn() */ | |
254 | #else | |
255 | /*VARARGS1 */ | |
256 | void | |
257 | as_warn (format, va_alist) | |
258 | const char *format; | |
259 | va_dcl | |
260 | { | |
261 | va_list args; | |
262 | char buffer[2000]; | |
263 | ||
264 | if (!flag_no_warnings) | |
265 | { | |
266 | va_start (args); | |
267 | vsprintf (buffer, format, args); | |
268 | va_end (args); | |
269 | as_warn_internal ((char *) NULL, 0, buffer); | |
270 | } | |
271 | } /* as_warn() */ | |
272 | #endif /* not NO_STDARG */ | |
273 | ||
274 | /* as_warn_where, like as_bad but the file name and line number are | |
275 | passed in. Unfortunately, we have to repeat the function in order | |
276 | to handle the varargs correctly and portably. */ | |
277 | ||
278 | #ifdef USE_STDARG | |
279 | void | |
280 | as_warn_where (char *file, unsigned int line, const char *format,...) | |
281 | { | |
282 | va_list args; | |
283 | char buffer[2000]; | |
284 | ||
285 | if (!flag_no_warnings) | |
286 | { | |
287 | va_start (args, format); | |
288 | vsprintf (buffer, format, args); | |
289 | va_end (args); | |
290 | as_warn_internal (file, line, buffer); | |
291 | } | |
292 | } /* as_warn() */ | |
293 | #else | |
294 | /*VARARGS1 */ | |
295 | void | |
296 | as_warn_where (file, line, format, va_alist) | |
297 | char *file; | |
298 | unsigned int line; | |
299 | const char *format; | |
300 | va_dcl | |
301 | { | |
302 | va_list args; | |
303 | char buffer[2000]; | |
304 | ||
305 | if (!flag_no_warnings) | |
306 | { | |
307 | va_start (args); | |
308 | vsprintf (buffer, format, args); | |
309 | va_end (args); | |
310 | as_warn_internal (file, line, buffer); | |
311 | } | |
312 | } /* as_warn() */ | |
313 | #endif /* not NO_STDARG */ | |
314 | ||
315 | /* The common portion of as_bad and as_bad_where. */ | |
316 | ||
317 | static void | |
318 | as_bad_internal (file, line, buffer) | |
319 | char *file; | |
320 | unsigned int line; | |
321 | char *buffer; | |
322 | { | |
323 | ++error_count; | |
324 | ||
325 | if (file == NULL) | |
326 | as_where (&file, &line); | |
327 | ||
328 | identify (file); | |
329 | if (file) | |
330 | fprintf (stderr, "%s:%u: ", file, line); | |
331 | fprintf (stderr, _("Error: ")); | |
332 | fputs (buffer, stderr); | |
333 | (void) putc ('\n', stderr); | |
334 | #ifndef NO_LISTING | |
335 | listing_error (buffer); | |
336 | #endif | |
337 | } | |
338 | ||
339 | /* | |
340 | * a s _ b a d () | |
341 | * | |
342 | * Send to stderr a string as a warning, and locate warning in input file(s). | |
343 | * Please us when there is no recovery, but we want to continue processing | |
344 | * but not produce an object file. | |
345 | * Please explain in string (which may have '\n's) what recovery was done. | |
346 | */ | |
347 | ||
348 | #ifdef USE_STDARG | |
349 | void | |
350 | as_bad (const char *format,...) | |
351 | { | |
352 | va_list args; | |
353 | char buffer[2000]; | |
354 | ||
355 | va_start (args, format); | |
356 | vsprintf (buffer, format, args); | |
357 | va_end (args); | |
358 | ||
359 | as_bad_internal ((char *) NULL, 0, buffer); | |
360 | } | |
361 | ||
362 | #else | |
363 | /*VARARGS1 */ | |
364 | void | |
365 | as_bad (format, va_alist) | |
366 | const char *format; | |
367 | va_dcl | |
368 | { | |
369 | va_list args; | |
370 | char buffer[2000]; | |
371 | ||
372 | va_start (args); | |
373 | vsprintf (buffer, format, args); | |
374 | va_end (args); | |
375 | ||
376 | as_bad_internal ((char *) NULL, 0, buffer); | |
377 | } | |
378 | #endif /* not NO_STDARG */ | |
379 | ||
380 | /* as_bad_where, like as_bad but the file name and line number are | |
381 | passed in. Unfortunately, we have to repeat the function in order | |
382 | to handle the varargs correctly and portably. */ | |
383 | ||
384 | #ifdef USE_STDARG | |
385 | void | |
386 | as_bad_where (char *file, unsigned int line, const char *format,...) | |
387 | { | |
388 | va_list args; | |
389 | char buffer[2000]; | |
390 | ||
391 | va_start (args, format); | |
392 | vsprintf (buffer, format, args); | |
393 | va_end (args); | |
394 | ||
395 | as_bad_internal (file, line, buffer); | |
396 | } | |
397 | ||
398 | #else | |
399 | /*VARARGS1 */ | |
400 | void | |
401 | as_bad_where (file, line, format, va_alist) | |
402 | char *file; | |
403 | unsigned int line; | |
404 | const char *format; | |
405 | va_dcl | |
406 | { | |
407 | va_list args; | |
408 | char buffer[2000]; | |
409 | ||
410 | va_start (args); | |
411 | vsprintf (buffer, format, args); | |
412 | va_end (args); | |
413 | ||
414 | as_bad_internal (file, line, buffer); | |
415 | } | |
416 | #endif /* not NO_STDARG */ | |
417 | ||
418 | /* | |
419 | * a s _ f a t a l () | |
420 | * | |
421 | * Send to stderr a string as a fatal message, and print location of error in | |
422 | * input file(s). | |
423 | * Please only use this for when we DON'T have some recovery action. | |
424 | * It xexit()s with a warning status. | |
425 | */ | |
426 | ||
427 | #ifdef USE_STDARG | |
428 | void | |
429 | as_fatal (const char *format,...) | |
430 | { | |
431 | va_list args; | |
432 | ||
433 | as_show_where (); | |
434 | va_start (args, format); | |
435 | fprintf (stderr, _("Fatal error: ")); | |
436 | vfprintf (stderr, format, args); | |
437 | (void) putc ('\n', stderr); | |
438 | va_end (args); | |
439 | xexit (EXIT_FAILURE); | |
440 | } /* as_fatal() */ | |
441 | #else | |
442 | /*VARARGS1*/ | |
443 | void | |
444 | as_fatal (format, va_alist) | |
445 | char *format; | |
446 | va_dcl | |
447 | { | |
448 | va_list args; | |
449 | ||
450 | as_show_where (); | |
451 | va_start (args); | |
452 | fprintf (stderr, _("Fatal error: ")); | |
453 | vfprintf (stderr, format, args); | |
454 | (void) putc ('\n', stderr); | |
455 | va_end (args); | |
456 | xexit (EXIT_FAILURE); | |
457 | } /* as_fatal() */ | |
458 | #endif /* not NO_STDARG */ | |
459 | ||
460 | /* | |
461 | * as_assert: Indicate assertion failure. | |
462 | * Arguments: Filename, line number, optional function name. | |
463 | */ | |
464 | ||
465 | void | |
466 | as_assert (file, line, fn) | |
467 | const char *file, *fn; | |
468 | int line; | |
469 | { | |
470 | as_show_where (); | |
471 | fprintf (stderr, _("Internal error!\n")); | |
472 | if (fn) | |
473 | fprintf (stderr, _("Assertion failure in %s at %s line %d.\n"), | |
474 | fn, file, line); | |
475 | else | |
476 | fprintf (stderr, _("Assertion failure at %s line %d.\n"), file, line); | |
477 | fprintf (stderr, _("Please report this bug.\n")); | |
478 | xexit (EXIT_FAILURE); | |
479 | } | |
480 | ||
481 | /* as_abort: Print a friendly message saying how totally hosed we are, | |
482 | and exit without producing a core file. */ | |
483 | void | |
484 | as_abort (file, line, fn) | |
485 | const char *file, *fn; | |
486 | int line; | |
487 | { | |
488 | as_show_where (); | |
489 | if (fn) | |
490 | fprintf (stderr, _("Internal error, aborting at %s line %d in %s\n"), | |
491 | file, line, fn); | |
492 | else | |
493 | fprintf (stderr, _("Internal error, aborting at %s line %d\n"), | |
494 | file, line); | |
495 | fprintf (stderr, _("Please report this bug.\n")); | |
496 | xexit (EXIT_FAILURE); | |
497 | } | |
498 | ||
499 | /* Support routines. */ | |
500 | ||
501 | void | |
502 | fprint_value (file, val) | |
503 | FILE *file; | |
504 | valueT val; | |
505 | { | |
506 | if (sizeof (val) <= sizeof (long)) | |
507 | { | |
508 | fprintf (file, "%ld", (long) val); | |
509 | return; | |
510 | } | |
511 | #ifdef BFD_ASSEMBLER | |
512 | if (sizeof (val) <= sizeof (bfd_vma)) | |
513 | { | |
514 | fprintf_vma (file, val); | |
515 | return; | |
516 | } | |
517 | #endif | |
518 | abort (); | |
519 | } | |
520 | ||
521 | void | |
522 | sprint_value (buf, val) | |
523 | char *buf; | |
524 | valueT val; | |
525 | { | |
526 | if (sizeof (val) <= sizeof (long)) | |
527 | { | |
528 | sprintf (buf, "%ld", (long) val); | |
529 | return; | |
530 | } | |
531 | #ifdef BFD_ASSEMBLER | |
532 | if (sizeof (val) <= sizeof (bfd_vma)) | |
533 | { | |
534 | sprintf_vma (buf, val); | |
535 | return; | |
536 | } | |
537 | #endif | |
538 | abort (); | |
539 | } | |
540 | ||
541 | /* end of messages.c */ |