| 1 | /* messages.c - error reporter - |
| 2 | Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001 |
| 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 (char *); |
| 46 | static void as_show_where (void); |
| 47 | static void as_warn_internal (char *, unsigned int, char *); |
| 48 | static void as_bad_internal (char *, unsigned int, char *); |
| 49 | |
| 50 | /* Despite the rest of the comments in this file, (FIXME-SOON), |
| 51 | * here is the current scheme for error messages etc: |
| 52 | * |
| 53 | * as_fatal() is used when gas is quite confused and |
| 54 | * continuing the assembly is pointless. In this case we |
| 55 | * exit immediately with error status. |
| 56 | * |
| 57 | * as_bad() is used to mark errors that result in what we |
| 58 | * presume to be a useless object file. Say, we ignored |
| 59 | * something that might have been vital. If we see any of |
| 60 | * these, assembly will continue to the end of the source, |
| 61 | * no object file will be produced, and we will terminate |
| 62 | * with error status. The new option, -Z, tells us to |
| 63 | * produce an object file anyway but we still exit with |
| 64 | * error status. The assumption here is that you don't want |
| 65 | * this object file but we could be wrong. |
| 66 | * |
| 67 | * as_warn() is used when we have an error from which we |
| 68 | * have a plausible error recovery. eg, masking the top |
| 69 | * bits of a constant that is longer than will fit in the |
| 70 | * destination. In this case we will continue to assemble |
| 71 | * the source, although we may have made a bad assumption, |
| 72 | * and we will produce an object file and return normal exit |
| 73 | * status (ie, no error). The new option -X tells us to |
| 74 | * treat all as_warn() errors as as_bad() errors. That is, |
| 75 | * no object file will be produced and we will exit with |
| 76 | * error status. The idea here is that we don't kill an |
| 77 | * entire make because of an error that we knew how to |
| 78 | * correct. On the other hand, sometimes you might want to |
| 79 | * stop the make at these points. |
| 80 | * |
| 81 | * as_tsktsk() is used when we see a minor error for which |
| 82 | * our error recovery action is almost certainly correct. |
| 83 | * In this case, we print a message and then assembly |
| 84 | * continues as though no error occurred. |
| 85 | */ |
| 86 | |
| 87 | static void |
| 88 | identify (char *file) |
| 89 | { |
| 90 | static int identified; |
| 91 | if (identified) |
| 92 | return; |
| 93 | identified++; |
| 94 | |
| 95 | if (!file) |
| 96 | { |
| 97 | unsigned int x; |
| 98 | as_where (&file, &x); |
| 99 | } |
| 100 | |
| 101 | if (file) |
| 102 | fprintf (stderr, "%s: ", file); |
| 103 | fprintf (stderr, _("Assembler messages:\n")); |
| 104 | } |
| 105 | |
| 106 | /* The number of warnings issued. */ |
| 107 | static int warning_count; |
| 108 | |
| 109 | int |
| 110 | had_warnings (void) |
| 111 | { |
| 112 | return (warning_count); |
| 113 | } |
| 114 | |
| 115 | /* Nonzero if we've hit a 'bad error', and should not write an obj file, |
| 116 | and exit with a nonzero error code. */ |
| 117 | |
| 118 | static int error_count; |
| 119 | |
| 120 | int |
| 121 | had_errors (void) |
| 122 | { |
| 123 | return (error_count); |
| 124 | } |
| 125 | |
| 126 | /* Print the current location to stderr. */ |
| 127 | |
| 128 | static void |
| 129 | as_show_where (void) |
| 130 | { |
| 131 | char *file; |
| 132 | unsigned int line; |
| 133 | |
| 134 | as_where (&file, &line); |
| 135 | identify (file); |
| 136 | if (file) |
| 137 | fprintf (stderr, "%s:%u: ", file, line); |
| 138 | } |
| 139 | |
| 140 | /* Like perror(3), but with more info. */ |
| 141 | |
| 142 | void |
| 143 | as_perror (const char *gripe, /* Unpunctuated error theme. */ |
| 144 | const char *filename) |
| 145 | { |
| 146 | const char *errtxt; |
| 147 | |
| 148 | as_show_where (); |
| 149 | fprintf (stderr, gripe, filename); |
| 150 | #ifdef BFD_ASSEMBLER |
| 151 | errtxt = bfd_errmsg (bfd_get_error ()); |
| 152 | #else |
| 153 | errtxt = xstrerror (errno); |
| 154 | #endif |
| 155 | fprintf (stderr, ": %s\n", errtxt); |
| 156 | errno = 0; |
| 157 | #ifdef BFD_ASSEMBLER |
| 158 | bfd_set_error (bfd_error_no_error); |
| 159 | #endif |
| 160 | } |
| 161 | |
| 162 | /* Send to stderr a string as a warning, and locate warning |
| 163 | in input file(s). |
| 164 | Please only use this for when we have some recovery action. |
| 165 | Please explain in string (which may have '\n's) what recovery was |
| 166 | done. */ |
| 167 | |
| 168 | #ifdef USE_STDARG |
| 169 | void |
| 170 | as_tsktsk (const char *format, ...) |
| 171 | { |
| 172 | va_list args; |
| 173 | |
| 174 | as_show_where (); |
| 175 | va_start (args, format); |
| 176 | vfprintf (stderr, format, args); |
| 177 | va_end (args); |
| 178 | (void) putc ('\n', stderr); |
| 179 | } |
| 180 | #else |
| 181 | void |
| 182 | as_tsktsk (format, va_alist) |
| 183 | const char *format; |
| 184 | va_dcl |
| 185 | { |
| 186 | va_list args; |
| 187 | |
| 188 | as_show_where (); |
| 189 | va_start (args); |
| 190 | vfprintf (stderr, format, args); |
| 191 | va_end (args); |
| 192 | (void) putc ('\n', stderr); |
| 193 | } |
| 194 | #endif /* not NO_STDARG */ |
| 195 | |
| 196 | /* The common portion of as_warn and as_warn_where. */ |
| 197 | |
| 198 | static void |
| 199 | as_warn_internal (char *file, unsigned int line, char *buffer) |
| 200 | { |
| 201 | ++warning_count; |
| 202 | |
| 203 | if (file == NULL) |
| 204 | as_where (&file, &line); |
| 205 | |
| 206 | identify (file); |
| 207 | if (file) |
| 208 | fprintf (stderr, "%s:%u: ", file, line); |
| 209 | fprintf (stderr, _("Warning: ")); |
| 210 | fputs (buffer, stderr); |
| 211 | (void) putc ('\n', stderr); |
| 212 | #ifndef NO_LISTING |
| 213 | listing_warning (buffer); |
| 214 | #endif |
| 215 | } |
| 216 | |
| 217 | /* Send to stderr a string as a warning, and locate warning |
| 218 | in input file(s). |
| 219 | Please only use this for when we have some recovery action. |
| 220 | Please explain in string (which may have '\n's) what recovery was |
| 221 | done. */ |
| 222 | |
| 223 | #ifdef USE_STDARG |
| 224 | void |
| 225 | as_warn (const char *format, ...) |
| 226 | { |
| 227 | va_list args; |
| 228 | char buffer[2000]; |
| 229 | |
| 230 | if (!flag_no_warnings) |
| 231 | { |
| 232 | va_start (args, format); |
| 233 | vsprintf (buffer, format, args); |
| 234 | va_end (args); |
| 235 | as_warn_internal ((char *) NULL, 0, buffer); |
| 236 | } |
| 237 | } |
| 238 | #else |
| 239 | void |
| 240 | as_warn (format, va_alist) |
| 241 | const char *format; |
| 242 | va_dcl |
| 243 | { |
| 244 | va_list args; |
| 245 | char buffer[2000]; |
| 246 | |
| 247 | if (!flag_no_warnings) |
| 248 | { |
| 249 | va_start (args); |
| 250 | vsprintf (buffer, format, args); |
| 251 | va_end (args); |
| 252 | as_warn_internal ((char *) NULL, 0, buffer); |
| 253 | } |
| 254 | } |
| 255 | #endif /* not NO_STDARG */ |
| 256 | |
| 257 | /* Like as_bad but the file name and line number are passed in. |
| 258 | Unfortunately, we have to repeat the function in order to handle |
| 259 | the varargs correctly and portably. */ |
| 260 | |
| 261 | #ifdef USE_STDARG |
| 262 | void |
| 263 | as_warn_where (char *file, unsigned int line, const char *format, ...) |
| 264 | { |
| 265 | va_list args; |
| 266 | char buffer[2000]; |
| 267 | |
| 268 | if (!flag_no_warnings) |
| 269 | { |
| 270 | va_start (args, format); |
| 271 | vsprintf (buffer, format, args); |
| 272 | va_end (args); |
| 273 | as_warn_internal (file, line, buffer); |
| 274 | } |
| 275 | } |
| 276 | #else |
| 277 | void |
| 278 | as_warn_where (file, line, format, va_alist) |
| 279 | char *file; |
| 280 | unsigned int line; |
| 281 | const char *format; |
| 282 | va_dcl |
| 283 | { |
| 284 | va_list args; |
| 285 | char buffer[2000]; |
| 286 | |
| 287 | if (!flag_no_warnings) |
| 288 | { |
| 289 | va_start (args); |
| 290 | vsprintf (buffer, format, args); |
| 291 | va_end (args); |
| 292 | as_warn_internal (file, line, buffer); |
| 293 | } |
| 294 | } |
| 295 | #endif /* not NO_STDARG */ |
| 296 | |
| 297 | /* The common portion of as_bad and as_bad_where. */ |
| 298 | |
| 299 | static void |
| 300 | as_bad_internal (char *file, unsigned int line, char *buffer) |
| 301 | { |
| 302 | ++error_count; |
| 303 | |
| 304 | if (file == NULL) |
| 305 | as_where (&file, &line); |
| 306 | |
| 307 | identify (file); |
| 308 | if (file) |
| 309 | fprintf (stderr, "%s:%u: ", file, line); |
| 310 | fprintf (stderr, _("Error: ")); |
| 311 | fputs (buffer, stderr); |
| 312 | (void) putc ('\n', stderr); |
| 313 | #ifndef NO_LISTING |
| 314 | listing_error (buffer); |
| 315 | #endif |
| 316 | } |
| 317 | |
| 318 | /* Send to stderr a string as a warning, and locate warning in input |
| 319 | file(s). Please us when there is no recovery, but we want to |
| 320 | continue processing but not produce an object file. |
| 321 | Please explain in string (which may have '\n's) what recovery was |
| 322 | done. */ |
| 323 | |
| 324 | #ifdef USE_STDARG |
| 325 | void |
| 326 | as_bad (const char *format, ...) |
| 327 | { |
| 328 | va_list args; |
| 329 | char buffer[2000]; |
| 330 | |
| 331 | va_start (args, format); |
| 332 | vsprintf (buffer, format, args); |
| 333 | va_end (args); |
| 334 | |
| 335 | as_bad_internal ((char *) NULL, 0, buffer); |
| 336 | } |
| 337 | |
| 338 | #else |
| 339 | void |
| 340 | as_bad (format, va_alist) |
| 341 | const char *format; |
| 342 | va_dcl |
| 343 | { |
| 344 | va_list args; |
| 345 | char buffer[2000]; |
| 346 | |
| 347 | va_start (args); |
| 348 | vsprintf (buffer, format, args); |
| 349 | va_end (args); |
| 350 | |
| 351 | as_bad_internal ((char *) NULL, 0, buffer); |
| 352 | } |
| 353 | #endif /* not NO_STDARG */ |
| 354 | |
| 355 | /* Like as_bad but the file name and line number are passed in. |
| 356 | Unfortunately, we have to repeat the function in order to handle |
| 357 | the varargs correctly and portably. */ |
| 358 | |
| 359 | #ifdef USE_STDARG |
| 360 | void |
| 361 | as_bad_where (char *file, unsigned int line, const char *format, ...) |
| 362 | { |
| 363 | va_list args; |
| 364 | char buffer[2000]; |
| 365 | |
| 366 | va_start (args, format); |
| 367 | vsprintf (buffer, format, args); |
| 368 | va_end (args); |
| 369 | |
| 370 | as_bad_internal (file, line, buffer); |
| 371 | } |
| 372 | |
| 373 | #else |
| 374 | void |
| 375 | as_bad_where (file, line, format, va_alist) |
| 376 | char *file; |
| 377 | unsigned int line; |
| 378 | const char *format; |
| 379 | va_dcl |
| 380 | { |
| 381 | va_list args; |
| 382 | char buffer[2000]; |
| 383 | |
| 384 | va_start (args); |
| 385 | vsprintf (buffer, format, args); |
| 386 | va_end (args); |
| 387 | |
| 388 | as_bad_internal (file, line, buffer); |
| 389 | } |
| 390 | #endif /* not NO_STDARG */ |
| 391 | |
| 392 | /* Send to stderr a string as a fatal message, and print location of |
| 393 | error in input file(s). |
| 394 | Please only use this for when we DON'T have some recovery action. |
| 395 | It xexit()s with a warning status. */ |
| 396 | |
| 397 | #ifdef USE_STDARG |
| 398 | void |
| 399 | as_fatal (const char *format, ...) |
| 400 | { |
| 401 | va_list args; |
| 402 | |
| 403 | as_show_where (); |
| 404 | va_start (args, format); |
| 405 | fprintf (stderr, _("Fatal error: ")); |
| 406 | vfprintf (stderr, format, args); |
| 407 | (void) putc ('\n', stderr); |
| 408 | va_end (args); |
| 409 | /* Delete the output file, if it exists. This will prevent make from |
| 410 | thinking that a file was created and hence does not need rebuilding. */ |
| 411 | if (out_file_name != NULL) |
| 412 | unlink (out_file_name); |
| 413 | xexit (EXIT_FAILURE); |
| 414 | } |
| 415 | #else |
| 416 | void |
| 417 | as_fatal (format, va_alist) |
| 418 | char *format; |
| 419 | va_dcl |
| 420 | { |
| 421 | va_list args; |
| 422 | |
| 423 | as_show_where (); |
| 424 | va_start (args); |
| 425 | fprintf (stderr, _("Fatal error: ")); |
| 426 | vfprintf (stderr, format, args); |
| 427 | (void) putc ('\n', stderr); |
| 428 | va_end (args); |
| 429 | xexit (EXIT_FAILURE); |
| 430 | } |
| 431 | #endif /* not NO_STDARG */ |
| 432 | |
| 433 | /* Indicate assertion failure. |
| 434 | Arguments: Filename, line number, optional function name. */ |
| 435 | |
| 436 | void |
| 437 | as_assert (const char *file, int line, const char *fn) |
| 438 | { |
| 439 | as_show_where (); |
| 440 | fprintf (stderr, _("Internal error!\n")); |
| 441 | if (fn) |
| 442 | fprintf (stderr, _("Assertion failure in %s at %s line %d.\n"), |
| 443 | fn, file, line); |
| 444 | else |
| 445 | fprintf (stderr, _("Assertion failure at %s line %d.\n"), file, line); |
| 446 | fprintf (stderr, _("Please report this bug.\n")); |
| 447 | xexit (EXIT_FAILURE); |
| 448 | } |
| 449 | |
| 450 | /* as_abort: Print a friendly message saying how totally hosed we are, |
| 451 | and exit without producing a core file. */ |
| 452 | |
| 453 | void |
| 454 | as_abort (const char *file, int line, const char *fn) |
| 455 | { |
| 456 | as_show_where (); |
| 457 | if (fn) |
| 458 | fprintf (stderr, _("Internal error, aborting at %s line %d in %s\n"), |
| 459 | file, line, fn); |
| 460 | else |
| 461 | fprintf (stderr, _("Internal error, aborting at %s line %d\n"), |
| 462 | file, line); |
| 463 | fprintf (stderr, _("Please report this bug.\n")); |
| 464 | xexit (EXIT_FAILURE); |
| 465 | } |
| 466 | |
| 467 | /* Support routines. */ |
| 468 | |
| 469 | void |
| 470 | fprint_value (FILE *file, valueT val) |
| 471 | { |
| 472 | if (sizeof (val) <= sizeof (long)) |
| 473 | { |
| 474 | fprintf (file, "%ld", (long) val); |
| 475 | return; |
| 476 | } |
| 477 | #ifdef BFD_ASSEMBLER |
| 478 | if (sizeof (val) <= sizeof (bfd_vma)) |
| 479 | { |
| 480 | fprintf_vma (file, val); |
| 481 | return; |
| 482 | } |
| 483 | #endif |
| 484 | abort (); |
| 485 | } |
| 486 | |
| 487 | void |
| 488 | sprint_value (char *buf, valueT val) |
| 489 | { |
| 490 | if (sizeof (val) <= sizeof (long)) |
| 491 | { |
| 492 | sprintf (buf, "%ld", (long) val); |
| 493 | return; |
| 494 | } |
| 495 | #ifdef BFD_ASSEMBLER |
| 496 | if (sizeof (val) <= sizeof (bfd_vma)) |
| 497 | { |
| 498 | sprintf_vma (buf, val); |
| 499 | return; |
| 500 | } |
| 501 | #endif |
| 502 | abort (); |
| 503 | } |