506 lines
12 KiB
C
506 lines
12 KiB
C
/* messages.c - error reporter -
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Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2003
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Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#include "as.h"
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#include <stdio.h>
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef USE_STDARG
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#include <stdarg.h>
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#endif
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#ifdef USE_VARARGS
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#include <varargs.h>
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#endif
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#if !defined (USE_STDARG) && !defined (USE_VARARGS)
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/* Roll our own. */
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#define va_alist REST
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#define va_dcl
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typedef int * va_list;
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#define va_start(ARGS) ARGS = &REST
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#define va_end(ARGS)
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#endif
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static void identify (char *);
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static void as_show_where (void);
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static void as_warn_internal (char *, unsigned int, char *);
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static void as_bad_internal (char *, unsigned int, char *);
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/* Despite the rest of the comments in this file, (FIXME-SOON),
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here is the current scheme for error messages etc:
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as_fatal() is used when gas is quite confused and
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continuing the assembly is pointless. In this case we
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exit immediately with error status.
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as_bad() is used to mark errors that result in what we
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presume to be a useless object file. Say, we ignored
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something that might have been vital. If we see any of
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these, assembly will continue to the end of the source,
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no object file will be produced, and we will terminate
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with error status. The new option, -Z, tells us to
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produce an object file anyway but we still exit with
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error status. The assumption here is that you don't want
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this object file but we could be wrong.
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as_warn() is used when we have an error from which we
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have a plausible error recovery. eg, masking the top
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bits of a constant that is longer than will fit in the
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destination. In this case we will continue to assemble
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the source, although we may have made a bad assumption,
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and we will produce an object file and return normal exit
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status (ie, no error). The new option -X tells us to
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treat all as_warn() errors as as_bad() errors. That is,
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no object file will be produced and we will exit with
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error status. The idea here is that we don't kill an
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entire make because of an error that we knew how to
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correct. On the other hand, sometimes you might want to
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stop the make at these points.
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as_tsktsk() is used when we see a minor error for which
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our error recovery action is almost certainly correct.
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In this case, we print a message and then assembly
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continues as though no error occurred. */
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static void
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identify (char *file)
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{
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static int identified;
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if (identified)
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return;
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identified++;
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if (!file)
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{
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unsigned int x;
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as_where (&file, &x);
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}
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if (file)
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fprintf (stderr, "%s: ", file);
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fprintf (stderr, _("Assembler messages:\n"));
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}
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/* The number of warnings issued. */
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static int warning_count;
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int
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had_warnings (void)
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{
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return warning_count;
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}
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/* Nonzero if we've hit a 'bad error', and should not write an obj file,
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and exit with a nonzero error code. */
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static int error_count;
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int
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had_errors (void)
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{
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return error_count;
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}
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/* Print the current location to stderr. */
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static void
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as_show_where (void)
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{
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char *file;
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unsigned int line;
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as_where (&file, &line);
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identify (file);
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if (file)
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fprintf (stderr, "%s:%u: ", file, line);
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}
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/* Like perror(3), but with more info. */
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void
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as_perror (const char *gripe, /* Unpunctuated error theme. */
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const char *filename)
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{
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const char *errtxt;
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int saved_errno = errno;
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as_show_where ();
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fprintf (stderr, gripe, filename);
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errno = saved_errno;
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#ifdef BFD_ASSEMBLER
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errtxt = bfd_errmsg (bfd_get_error ());
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#else
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errtxt = xstrerror (errno);
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#endif
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fprintf (stderr, ": %s\n", errtxt);
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errno = 0;
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#ifdef BFD_ASSEMBLER
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bfd_set_error (bfd_error_no_error);
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#endif
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}
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/* Send to stderr a string as a warning, and locate warning
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in input file(s).
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Please only use this for when we have some recovery action.
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Please explain in string (which may have '\n's) what recovery was
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done. */
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#ifdef USE_STDARG
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void
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as_tsktsk (const char *format, ...)
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{
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va_list args;
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as_show_where ();
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va_start (args, format);
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vfprintf (stderr, format, args);
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va_end (args);
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(void) putc ('\n', stderr);
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}
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#else
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void
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as_tsktsk (format, va_alist)
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const char *format;
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va_dcl
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{
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va_list args;
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as_show_where ();
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va_start (args);
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vfprintf (stderr, format, args);
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va_end (args);
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(void) putc ('\n', stderr);
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}
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#endif /* not NO_STDARG */
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/* The common portion of as_warn and as_warn_where. */
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static void
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as_warn_internal (char *file, unsigned int line, char *buffer)
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{
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++warning_count;
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if (file == NULL)
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as_where (&file, &line);
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identify (file);
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if (file)
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fprintf (stderr, "%s:%u: ", file, line);
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fprintf (stderr, _("Warning: "));
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fputs (buffer, stderr);
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(void) putc ('\n', stderr);
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#ifndef NO_LISTING
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listing_warning (buffer);
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#endif
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}
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/* Send to stderr a string as a warning, and locate warning
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in input file(s).
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Please only use this for when we have some recovery action.
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Please explain in string (which may have '\n's) what recovery was
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done. */
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#ifdef USE_STDARG
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void
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as_warn (const char *format, ...)
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{
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va_list args;
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char buffer[2000];
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if (!flag_no_warnings)
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{
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va_start (args, format);
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vsprintf (buffer, format, args);
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va_end (args);
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as_warn_internal ((char *) NULL, 0, buffer);
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}
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}
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#else
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void
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as_warn (format, va_alist)
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const char *format;
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va_dcl
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{
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va_list args;
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char buffer[2000];
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if (!flag_no_warnings)
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{
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va_start (args);
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vsprintf (buffer, format, args);
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va_end (args);
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as_warn_internal ((char *) NULL, 0, buffer);
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}
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}
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#endif /* not NO_STDARG */
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/* Like as_bad but the file name and line number are passed in.
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Unfortunately, we have to repeat the function in order to handle
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the varargs correctly and portably. */
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#ifdef USE_STDARG
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void
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as_warn_where (char *file, unsigned int line, const char *format, ...)
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{
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va_list args;
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char buffer[2000];
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if (!flag_no_warnings)
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{
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va_start (args, format);
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vsprintf (buffer, format, args);
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va_end (args);
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as_warn_internal (file, line, buffer);
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}
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}
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#else
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void
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as_warn_where (file, line, format, va_alist)
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char *file;
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unsigned int line;
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const char *format;
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va_dcl
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{
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va_list args;
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char buffer[2000];
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if (!flag_no_warnings)
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{
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va_start (args);
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vsprintf (buffer, format, args);
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va_end (args);
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as_warn_internal (file, line, buffer);
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}
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}
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#endif /* not NO_STDARG */
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/* The common portion of as_bad and as_bad_where. */
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static void
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as_bad_internal (char *file, unsigned int line, char *buffer)
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{
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++error_count;
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if (file == NULL)
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as_where (&file, &line);
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identify (file);
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if (file)
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fprintf (stderr, "%s:%u: ", file, line);
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fprintf (stderr, _("Error: "));
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fputs (buffer, stderr);
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(void) putc ('\n', stderr);
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#ifndef NO_LISTING
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listing_error (buffer);
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#endif
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}
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/* Send to stderr a string as a warning, and locate warning in input
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file(s). Please us when there is no recovery, but we want to
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continue processing but not produce an object file.
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Please explain in string (which may have '\n's) what recovery was
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done. */
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#ifdef USE_STDARG
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void
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as_bad (const char *format, ...)
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{
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va_list args;
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char buffer[2000];
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va_start (args, format);
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vsprintf (buffer, format, args);
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va_end (args);
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as_bad_internal ((char *) NULL, 0, buffer);
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}
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#else
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void
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as_bad (format, va_alist)
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const char *format;
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va_dcl
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{
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va_list args;
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char buffer[2000];
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va_start (args);
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vsprintf (buffer, format, args);
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va_end (args);
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as_bad_internal ((char *) NULL, 0, buffer);
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}
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#endif /* not NO_STDARG */
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/* Like as_bad but the file name and line number are passed in.
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Unfortunately, we have to repeat the function in order to handle
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the varargs correctly and portably. */
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#ifdef USE_STDARG
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void
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as_bad_where (char *file, unsigned int line, const char *format, ...)
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{
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va_list args;
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char buffer[2000];
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va_start (args, format);
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vsprintf (buffer, format, args);
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va_end (args);
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as_bad_internal (file, line, buffer);
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}
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#else
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void
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as_bad_where (file, line, format, va_alist)
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char *file;
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unsigned int line;
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const char *format;
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va_dcl
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{
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va_list args;
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char buffer[2000];
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va_start (args);
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vsprintf (buffer, format, args);
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va_end (args);
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as_bad_internal (file, line, buffer);
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}
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#endif /* not NO_STDARG */
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/* Send to stderr a string as a fatal message, and print location of
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error in input file(s).
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Please only use this for when we DON'T have some recovery action.
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It xexit()s with a warning status. */
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#ifdef USE_STDARG
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void
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as_fatal (const char *format, ...)
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{
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va_list args;
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as_show_where ();
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va_start (args, format);
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fprintf (stderr, _("Fatal error: "));
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vfprintf (stderr, format, args);
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(void) putc ('\n', stderr);
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va_end (args);
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/* Delete the output file, if it exists. This will prevent make from
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thinking that a file was created and hence does not need rebuilding. */
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if (out_file_name != NULL)
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unlink (out_file_name);
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xexit (EXIT_FAILURE);
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}
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#else
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void
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as_fatal (format, va_alist)
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char *format;
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va_dcl
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{
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va_list args;
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as_show_where ();
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va_start (args);
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fprintf (stderr, _("Fatal error: "));
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vfprintf (stderr, format, args);
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(void) putc ('\n', stderr);
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va_end (args);
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xexit (EXIT_FAILURE);
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}
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#endif /* not NO_STDARG */
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/* Indicate assertion failure.
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Arguments: Filename, line number, optional function name. */
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void
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as_assert (const char *file, int line, const char *fn)
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{
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as_show_where ();
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fprintf (stderr, _("Internal error!\n"));
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if (fn)
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fprintf (stderr, _("Assertion failure in %s at %s line %d.\n"),
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fn, file, line);
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else
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fprintf (stderr, _("Assertion failure at %s line %d.\n"), file, line);
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fprintf (stderr, _("Please report this bug.\n"));
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xexit (EXIT_FAILURE);
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}
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/* as_abort: Print a friendly message saying how totally hosed we are,
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and exit without producing a core file. */
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void
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as_abort (const char *file, int line, const char *fn)
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{
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as_show_where ();
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if (fn)
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fprintf (stderr, _("Internal error, aborting at %s line %d in %s\n"),
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file, line, fn);
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else
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fprintf (stderr, _("Internal error, aborting at %s line %d\n"),
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file, line);
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fprintf (stderr, _("Please report this bug.\n"));
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xexit (EXIT_FAILURE);
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}
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/* Support routines. */
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void
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fprint_value (FILE *file, valueT val)
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{
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if (sizeof (val) <= sizeof (long))
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{
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fprintf (file, "%ld", (long) val);
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return;
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}
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#ifdef BFD_ASSEMBLER
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if (sizeof (val) <= sizeof (bfd_vma))
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{
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fprintf_vma (file, val);
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return;
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}
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#endif
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abort ();
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}
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void
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sprint_value (char *buf, valueT val)
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{
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if (sizeof (val) <= sizeof (long))
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{
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sprintf (buf, "%ld", (long) val);
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return;
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}
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#ifdef BFD_ASSEMBLER
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if (sizeof (val) <= sizeof (bfd_vma))
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{
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sprintf_vma (buf, val);
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return;
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}
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#endif
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abort ();
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}
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