gas/messages.c

   1 /* messages.c - error reporter -
   2    Copyright (C) 1987, 1991 Free Software Foundation, Inc.
   3
   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 1, 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
  18    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
  19
  20 /* $Id$ */
  21
  22 #include <stdio.h> /* define stderr */
  23 #include <errno.h>
  24
  25 #include "as.h"
  26
  27 #ifndef NO_STDARG
  28 #include <stdarg.h>
  29 #else
  30 #ifndef NO_VARARGS
  31 #include <varargs.h>
  32 #endif /* NO_VARARGS */
  33 #endif /* NO_STDARG */
  34
  35 /*
  36  * Despite the rest of the comments in this file, (FIXME-SOON),
  37  * here is the current scheme for error messages etc:
  38  *
  39  * as_fatal() is used when gas is quite confused and
  40  * continuing the assembly is pointless.  In this case we
  41  * exit immediately with error status.
  42  *
  43  * as_bad() is used to mark errors that result in what we
  44  * presume to be a useless object file.  Say, we ignored
  45  * something that might have been vital.  If we see any of
  46  * these, assembly will continue to the end of the source,
  47  * no object file will be produced, and we will terminate
  48  * with error status.  The new option, -Z, tells us to
  49  * produce an object file anyway but we still exit with
  50  * error status.  The assumption here is that you don't want
  51  * this object file but we could be wrong.
  52  *
  53  * as_warn() is used when we have an error from which we
  54  * have a plausible error recovery.  eg, masking the top
  55  * bits of a constant that is longer than will fit in the
  56  * destination.  In this case we will continue to assemble
  57  * the source, although we may have made a bad assumption,
  58  * and we will produce an object file and return normal exit
  59  * status (ie, no error).  The new option -X tells us to
  60  * treat all as_warn() errors as as_bad() errors.  That is,
  61  * no object file will be produced and we will exit with
  62  * error status.  The idea here is that we don't kill an
  63  * entire make because of an error that we knew how to
  64  * correct.  On the other hand, sometimes you might want to
  65  * stop the make at these points.
  66  *
  67  * as_tsktsk() is used when we see a minor error for which
  68  * our error recovery action is almost certainly correct.
  69  * In this case, we print a message and then assembly
  70  * continues as though no error occurred.
  71  */
  72
  73 /*
  74   ERRORS
  75
  76   JF: this is now bogus.  We now print more standard error messages
  77   that try to look like everyone else's.
  78
  79   We print the error message 1st, beginning in column 1.
  80   All ancillary info starts in column 2 on lines after the
  81   key error text.
  82   We try to print a location in logical and physical file
  83   just after the main error text.
  84   Caller then prints any appendices after that, begining all
  85   lines with at least 1 space.
  86
  87   Optionally, we may die.
  88   There is no need for a trailing '\n' in your error text format
  89   because we supply one.
  90
  91   as_warn(fmt,args)  Like fprintf(stderr,fmt,args) but also call errwhere().
  92
  93   as_fatal(fmt,args) Like as_warn() but exit with a fatal status.
  94
  95  */
  96
  97 static int warning_count = 0; /* Count of number of warnings issued */
  98
  99 int had_warnings() {
 100         return(warning_count);
 101 } /* had_err() */
 102
 103 /* Nonzero if we've hit a 'bad error', and should not write an obj file,
 104    and exit with a nonzero error code */
 105
 106 static int error_count = 0;
 107
 108 int had_errors() {
 109         return(error_count);
 110 } /* had_errors() */
 111
 112
 113 /*
 114  *                      a s _ p e r r o r
 115  *
 116  * Like perror(3), but with more info.
 117  */
 118 void as_perror(gripe, filename)
 119 char *gripe;            /* Unpunctuated error theme. */
 120 char *filename;
 121 {
 122         extern int sys_nerr;
 123         extern char *sys_errlist[];
 124
 125         as_where();
 126         fprintf(stderr,gripe,filename);
 127
 128         if (errno > sys_nerr)
 129             fprintf(stderr, "Unknown error #%d.\n", errno);
 130         else
 131             fprintf(stderr, "%s.\n", sys_errlist[errno]);
 132         errno = 0; /* After reporting, clear it. */
 133 } /* as_perror() */
 134
 135 /*
 136  *                      a s _ t s k t s k ()
 137  *
 138  * Send to stderr a string (with bell) (JF: Bell is obnoxious!) as a warning, and locate warning
 139  * in input file(s).
 140  * Please only use this for when we have some recovery action.
 141  * Please explain in string (which may have '\n's) what recovery was done.
 142  */
 143
 144 #ifndef NO_STDARG
 145 void as_tsktsk(Format)
 146 const char *Format;
 147 {
 148         va_list args;
 149
 150         as_where();
 151         va_start(args, Format);
 152         vfprintf(stderr, Format, args);
 153         va_end(args);
 154         (void) putc('\n', stderr);
 155 } /* as_tsktsk() */
 156 #else
 157 #ifndef NO_VARARGS
 158 void as_tsktsk(Format,va_alist)
 159 char *Format;
 160 va_dcl
 161 {
 162         va_list args;
 163
 164         as_where();
 165         va_start(args);
 166         vfprintf(stderr, Format, args);
 167         va_end(args);
 168         (void) putc('\n', stderr);
 169 } /* as_tsktsk() */
 170 #else
 171 /*VARARGS1 */
 172 as_tsktsk(Format,args)
 173 char *Format;
 174 {
 175         as_where();
 176         _doprnt (Format, &args, stderr);
 177         (void)putc ('\n', stderr);
 178         /* as_where(); */
 179 } /* as_tsktsk */
 180 #endif /* not NO_VARARGS */
 181 #endif /* not NO_STDARG */
 182
 183 #ifdef DONTDEF
 184 void as_tsktsk(Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an)
 185 char *format;
 186 {
 187         as_where();
 188         fprintf(stderr,Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an);
 189         (void)putc('\n',stderr);
 190 } /* as_tsktsk() */
 191 #endif
 192 /*
 193  *                      a s _ w a r n ()
 194  *
 195  * Send to stderr a string (with bell) (JF: Bell is obnoxious!) as a warning, and locate warning
 196  * in input file(s).
 197  * Please only use this for when we have some recovery action.
 198  * Please explain in string (which may have '\n's) what recovery was done.
 199  */
 200
 201 #ifndef NO_STDARG
 202 void as_warn(Format)
 203 const char *Format;
 204 {
 205         va_list args;
 206
 207         if(!flagseen['W']) {
 208                 ++warning_count;
 209                 as_where();
 210                 va_start(args, Format);
 211                 vfprintf(stderr, Format, args);
 212                 va_end(args);
 213                 (void) putc('\n', stderr);
 214         }
 215 } /* as_warn() */
 216 #else
 217 #ifndef NO_VARARGS
 218 void as_warn(Format,va_alist)
 219 char *Format;
 220 va_dcl
 221 {
 222         va_list args;
 223
 224         if(!flagseen['W']) {
 225                 ++warning_count;
 226                 as_where();
 227                 va_start(args);
 228                 vfprintf(stderr, Format, args);
 229                 va_end(args);
 230                 (void) putc('\n', stderr);
 231         }
 232 } /* as_warn() */
 233 #else
 234 /*VARARGS1 */
 235 as_warn(Format,args)
 236 char *Format;
 237 {
 238         /* -W supresses warning messages. */
 239         if (! flagseen ['W']) {
 240                 ++warning_count;
 241                 as_where();
 242                 _doprnt (Format, &args, stderr);
 243                 (void)putc ('\n', stderr);
 244                 /* as_where(); */
 245         }
 246 } /* as_warn() */
 247 #endif /* not NO_VARARGS */
 248 #endif /* not NO_STDARG */
 249
 250 #ifdef DONTDEF
 251 void as_warn(Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an)
 252 char *format;
 253 {
 254         if(!flagseen['W']) {
 255                 ++warning_count;
 256                 as_where();
 257                 fprintf(stderr,Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an);
 258                 (void)putc('\n',stderr);
 259         }
 260 } /* as_warn() */
 261 #endif
 262 /*
 263  *                      a s _ b a d ()
 264  *
 265  * Send to stderr a string (with bell) (JF: Bell is obnoxious!) as a warning,
 266  * and locate warning in input file(s).
 267  * Please us when there is no recovery, but we want to continue processing
 268  * but not produce an object file.
 269  * Please explain in string (which may have '\n's) what recovery was done.
 270  */
 271
 272 #ifndef NO_STDARG
 273 void as_bad(Format)
 274 const char *Format;
 275 {
 276         va_list args;
 277
 278         ++error_count;
 279         as_where();
 280         va_start(args, Format);
 281         vfprintf(stderr, Format, args);
 282         va_end(args);
 283         (void) putc('\n', stderr);
 284 } /* as_bad() */
 285 #else
 286 #ifndef NO_VARARGS
 287 void as_bad(Format,va_alist)
 288 char *Format;
 289 va_dcl
 290 {
 291         va_list args;
 292
 293         ++error_count;
 294         as_where();
 295         va_start(args);
 296         vfprintf(stderr, Format, args);
 297         va_end(args);
 298         (void) putc('\n', stderr);
 299 } /* as_bad() */
 300 #else
 301 /*VARARGS1 */
 302 as_bad(Format,args)
 303 char *Format;
 304 {
 305         ++error_count;
 306         as_where();
 307         _doprnt (Format, &args, stderr);
 308         (void)putc ('\n', stderr);
 309         /* as_where(); */
 310 } /* as_bad() */
 311 #endif /* not NO_VARARGS */
 312 #endif /* not NO_STDARG */
 313
 314 #ifdef DONTDEF
 315 void as_bad(Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an)
 316 char *format;
 317 {
 318         ++error_count;
 319         as_where();
 320         fprintf(stderr,Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an);
 321         (void)putc('\n',stderr);
 322 } /* as_bad() */
 323 #endif
 324
 325 /*
 326  *                      a s _ f a t a l ()
 327  *
 328  * Send to stderr a string (with bell) (JF: Bell is obnoxious!) as a fatal
 329  * message, and locate stdsource in input file(s).
 330  * Please only use this for when we DON'T have some recovery action.
 331  * It exit()s with a warning status.
 332  */
 333
 334 #ifndef NO_STDARG
 335 void as_fatal(Format)
 336 const char *Format;
 337 {
 338         va_list args;
 339
 340         as_where();
 341         va_start(args, Format);
 342         fprintf (stderr, "FATAL:");
 343         vfprintf(stderr, Format, args);
 344         (void) putc('\n', stderr);
 345         va_end(args);
 346         exit(42);
 347 } /* as_fatal() */
 348 #else
 349 #ifndef NO_VARARGS
 350 void as_fatal(Format,va_alist)
 351 char *Format;
 352 va_dcl
 353 {
 354         va_list args;
 355
 356         as_where();
 357         va_start(args);
 358         fprintf (stderr, "FATAL:");
 359         vfprintf(stderr, Format, args);
 360         (void) putc('\n', stderr);
 361         va_end(args);
 362         exit(42);
 363 } /* as_fatal() */
 364 #else
 365 /*VARARGS1 */
 366 as_fatal(Format, args)
 367 char *Format;
 368 {
 369         as_where();
 370         fprintf(stderr,"FATAL:");
 371         _doprnt (Format, &args, stderr);
 372         (void)putc ('\n', stderr);
 373         /* as_where(); */
 374         exit(42);                       /* What is a good exit status? */
 375 } /* as_fatal() */
 376 #endif /* not NO_VARARGS */
 377 #endif /* not NO_STDARG */
 378
 379 #ifdef DONTDEF
 380 void as_fatal(Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an)
 381 char *Format;
 382 {
 383         as_where();
 384         fprintf (stderr, "FATAL:");
 385         fprintf(stderr, Format,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an);
 386         (void) putc('\n', stderr);
 387         exit(42);
 388 } /* as_fatal() */
 389 #endif
 390
 391 /* end: messages.c */