/* messages.c - error reporter -
- Copyright (C) 1987, 91, 92, 93, 94, 95, 96, 97, 1998
- Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#include "as.h"
+#include <signal.h>
-#include <stdio.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
+/* If the system doesn't provide strsignal, we get it defined in
+ libiberty but no declaration is supplied. Because, reasons. */
+#if !defined (HAVE_STRSIGNAL) && !defined (strsignal)
+extern const char *strsignal (int);
#endif
-#ifdef USE_STDARG
-#include <stdarg.h>
-#endif
-
-#ifdef USE_VARARGS
-#include <varargs.h>
-#endif
-
-#if !defined (USE_STDARG) && !defined (USE_VARARGS)
-/* Roll our own. */
-#define va_alist REST
-#define va_dcl
-typedef int * va_list;
-#define va_start(ARGS) ARGS = &REST
-#define va_end(ARGS)
-#endif
-
-static void identify PARAMS ((char *));
-static void as_show_where PARAMS ((void));
-static void as_warn_internal PARAMS ((char *, unsigned int, char *));
-static void as_bad_internal PARAMS ((char *, unsigned int, char *));
-
-/*
- * Despite the rest of the comments in this file, (FIXME-SOON),
- * here is the current scheme for error messages etc:
- *
- * as_fatal() is used when gas is quite confused and
- * continuing the assembly is pointless. In this case we
- * exit immediately with error status.
- *
- * as_bad() is used to mark errors that result in what we
- * presume to be a useless object file. Say, we ignored
- * something that might have been vital. If we see any of
- * these, assembly will continue to the end of the source,
- * no object file will be produced, and we will terminate
- * with error status. The new option, -Z, tells us to
- * produce an object file anyway but we still exit with
- * error status. The assumption here is that you don't want
- * this object file but we could be wrong.
- *
- * as_warn() is used when we have an error from which we
- * have a plausible error recovery. eg, masking the top
- * bits of a constant that is longer than will fit in the
- * destination. In this case we will continue to assemble
- * the source, although we may have made a bad assumption,
- * and we will produce an object file and return normal exit
- * status (ie, no error). The new option -X tells us to
- * treat all as_warn() errors as as_bad() errors. That is,
- * no object file will be produced and we will exit with
- * error status. The idea here is that we don't kill an
- * entire make because of an error that we knew how to
- * correct. On the other hand, sometimes you might want to
- * stop the make at these points.
- *
- * as_tsktsk() is used when we see a minor error for which
- * our error recovery action is almost certainly correct.
- * In this case, we print a message and then assembly
- * continues as though no error occurred.
- */
+static void identify (const char *);
+static void as_show_where (void);
+static void as_warn_internal (const char *, unsigned int, char *);
+static void as_bad_internal (const char *, unsigned int, char *);
+static void signal_crash (int) ATTRIBUTE_NORETURN;
+
+/* Despite the rest of the comments in this file, (FIXME-SOON),
+ here is the current scheme for error messages etc:
+
+ as_fatal() is used when gas is quite confused and
+ continuing the assembly is pointless. In this case we
+ exit immediately with error status.
+
+ as_bad() is used to mark errors that result in what we
+ presume to be a useless object file. Say, we ignored
+ something that might have been vital. If we see any of
+ these, assembly will continue to the end of the source,
+ no object file will be produced, and we will terminate
+ with error status. The new option, -Z, tells us to
+ produce an object file anyway but we still exit with
+ error status. The assumption here is that you don't want
+ this object file but we could be wrong.
+
+ as_warn() is used when we have an error from which we
+ have a plausible error recovery. eg, masking the top
+ bits of a constant that is longer than will fit in the
+ destination. In this case we will continue to assemble
+ the source, although we may have made a bad assumption,
+ and we will produce an object file and return normal exit
+ status (ie, no error). The new option -X tells us to
+ treat all as_warn() errors as as_bad() errors. That is,
+ no object file will be produced and we will exit with
+ error status. The idea here is that we don't kill an
+ entire make because of an error that we knew how to
+ correct. On the other hand, sometimes you might want to
+ stop the make at these points.
+
+ as_tsktsk() is used when we see a minor error for which
+ our error recovery action is almost certainly correct.
+ In this case, we print a message and then assembly
+ continues as though no error occurred.
+
+ as_abort () is used for logic failure (assert or abort, signal).
+*/
static void
-identify (file)
- char *file;
+identify (const char *file)
{
static int identified;
+
if (identified)
return;
identified++;
if (!file)
{
unsigned int x;
- as_where (&file, &x);
+ file = as_where (&x);
}
if (file)
fprintf (stderr, _("Assembler messages:\n"));
}
-static int warning_count; /* Count of number of warnings issued */
+/* The number of warnings issued. */
+static int warning_count;
-int
-had_warnings ()
+int
+had_warnings (void)
{
- return (warning_count);
+ return warning_count;
}
/* Nonzero if we've hit a 'bad error', and should not write an obj file,
- and exit with a nonzero error code */
+ and exit with a nonzero error code. */
static int error_count;
-int
-had_errors ()
+int
+had_errors (void)
{
- return (error_count);
+ return error_count;
}
-
/* Print the current location to stderr. */
static void
-as_show_where ()
+as_show_where (void)
{
- char *file;
+ const char *file;
unsigned int line;
- as_where (&file, &line);
+ file = as_where (&line);
identify (file);
if (file)
- fprintf (stderr, "%s:%u: ", file, line);
+ {
+ if (line != 0)
+ fprintf (stderr, "%s:%u: ", file, line);
+ else
+ fprintf (stderr, "%s: ", file);
+ }
}
-/*
- * a s _ p e r r o r
- *
- * Like perror(3), but with more info.
- */
-
-void
-as_perror (gripe, filename)
- const char *gripe; /* Unpunctuated error theme. */
- const char *filename;
-{
- const char *errtxt;
+/* Send to stderr a string as a warning, and locate warning
+ in input file(s).
+ Please only use this for when we have some recovery action.
+ Please explain in string (which may have '\n's) what recovery was
+ done. */
- as_show_where ();
- fprintf (stderr, gripe, filename);
-#ifdef BFD_ASSEMBLER
- errtxt = bfd_errmsg (bfd_get_error ());
-#else
- errtxt = xstrerror (errno);
-#endif
- fprintf (stderr, ": %s\n", errtxt);
- errno = 0;
-#ifdef BFD_ASSEMBLER
- bfd_set_error (bfd_error_no_error);
-#endif
-}
-
-/*
- * a s _ t s k t s k ()
- *
- * Send to stderr a string as a warning, and locate warning
- * in input file(s).
- * Please only use this for when we have some recovery action.
- * Please explain in string (which may have '\n's) what recovery was done.
- */
-
-#ifdef USE_STDARG
-void
-as_tsktsk (const char *format,...)
+void
+as_tsktsk (const char *format, ...)
{
va_list args;
vfprintf (stderr, format, args);
va_end (args);
(void) putc ('\n', stderr);
-} /* as_tsktsk() */
-#else
-void
-as_tsktsk (format, va_alist)
- const char *format;
- va_dcl
-{
- va_list args;
-
- as_show_where ();
- va_start (args);
- vfprintf (stderr, format, args);
- va_end (args);
- (void) putc ('\n', stderr);
-} /* as_tsktsk() */
-#endif /* not NO_STDARG */
+}
/* The common portion of as_warn and as_warn_where. */
static void
-as_warn_internal (file, line, buffer)
- char *file;
- unsigned int line;
- char *buffer;
+as_warn_internal (const char *file, unsigned int line, char *buffer)
{
++warning_count;
if (file == NULL)
- as_where (&file, &line);
+ file = as_where (&line);
identify (file);
if (file)
- fprintf (stderr, "%s:%u: ", file, line);
- fprintf (stderr, _("Warning: "));
- fputs (buffer, stderr);
- (void) putc ('\n', stderr);
+ {
+ if (line != 0)
+ fprintf (stderr, "%s:%u: %s%s\n", file, line, _("Warning: "), buffer);
+ else
+ fprintf (stderr, "%s: %s%s\n", file, _("Warning: "), buffer);
+ }
+ else
+ fprintf (stderr, "%s%s\n", _("Warning: "), buffer);
#ifndef NO_LISTING
listing_warning (buffer);
#endif
}
-/*
- * a s _ w a r n ()
- *
- * Send to stderr a string as a warning, and locate warning
- * in input file(s).
- * Please only use this for when we have some recovery action.
- * Please explain in string (which may have '\n's) what recovery was done.
- */
-
-#ifdef USE_STDARG
-void
-as_warn (const char *format,...)
-{
- va_list args;
- char buffer[2000];
+/* Send to stderr a string as a warning, and locate warning
+ in input file(s).
+ Please only use this for when we have some recovery action.
+ Please explain in string (which may have '\n's) what recovery was
+ done. */
- if (!flag_no_warnings)
- {
- va_start (args, format);
- vsprintf (buffer, format, args);
- va_end (args);
- as_warn_internal ((char *) NULL, 0, buffer);
- }
-} /* as_warn() */
-#else
-/*VARARGS1 */
-void
-as_warn (format, va_alist)
- const char *format;
- va_dcl
+void
+as_warn (const char *format, ...)
{
va_list args;
char buffer[2000];
if (!flag_no_warnings)
{
- va_start (args);
- vsprintf (buffer, format, args);
+ va_start (args, format);
+ vsnprintf (buffer, sizeof (buffer), format, args);
va_end (args);
as_warn_internal ((char *) NULL, 0, buffer);
}
-} /* as_warn() */
-#endif /* not NO_STDARG */
+}
-/* as_warn_where, like as_bad but the file name and line number are
- passed in. Unfortunately, we have to repeat the function in order
- to handle the varargs correctly and portably. */
+/* Like as_bad but the file name and line number are passed in.
+ Unfortunately, we have to repeat the function in order to handle
+ the varargs correctly and portably. */
-#ifdef USE_STDARG
-void
-as_warn_where (char *file, unsigned int line, const char *format,...)
+void
+as_warn_where (const char *file, unsigned int line, const char *format, ...)
{
va_list args;
char buffer[2000];
if (!flag_no_warnings)
{
va_start (args, format);
- vsprintf (buffer, format, args);
- va_end (args);
- as_warn_internal (file, line, buffer);
- }
-} /* as_warn() */
-#else
-/*VARARGS1 */
-void
-as_warn_where (file, line, format, va_alist)
- char *file;
- unsigned int line;
- const char *format;
- va_dcl
-{
- va_list args;
- char buffer[2000];
-
- if (!flag_no_warnings)
- {
- va_start (args);
- vsprintf (buffer, format, args);
+ vsnprintf (buffer, sizeof (buffer), format, args);
va_end (args);
as_warn_internal (file, line, buffer);
}
-} /* as_warn() */
-#endif /* not NO_STDARG */
+}
/* The common portion of as_bad and as_bad_where. */
static void
-as_bad_internal (file, line, buffer)
- char *file;
- unsigned int line;
- char *buffer;
+as_bad_internal (const char *file, unsigned int line, char *buffer)
{
++error_count;
if (file == NULL)
- as_where (&file, &line);
+ file = as_where (&line);
identify (file);
if (file)
- fprintf (stderr, "%s:%u: ", file, line);
- fprintf (stderr, _("Error: "));
- fputs (buffer, stderr);
- (void) putc ('\n', stderr);
+ {
+ if (line != 0)
+ fprintf (stderr, "%s:%u: %s%s\n", file, line, _("Error: "), buffer);
+ else
+ fprintf (stderr, "%s: %s%s\n", file, _("Error: "), buffer);
+ }
+ else
+ fprintf (stderr, "%s%s\n", _("Error: "), buffer);
#ifndef NO_LISTING
listing_error (buffer);
#endif
}
-/*
- * a s _ b a d ()
- *
- * Send to stderr a string as a warning, and locate warning in input file(s).
- * Please us when there is no recovery, but we want to continue processing
- * but not produce an object file.
- * Please explain in string (which may have '\n's) what recovery was done.
- */
-
-#ifdef USE_STDARG
-void
-as_bad (const char *format,...)
-{
- va_list args;
- char buffer[2000];
+/* Send to stderr a string as a warning, and locate warning in input
+ file(s). Please use when there is no recovery, but we want to
+ continue processing but not produce an object file.
+ Please explain in string (which may have '\n's) what recovery was
+ done. */
- va_start (args, format);
- vsprintf (buffer, format, args);
- va_end (args);
-
- as_bad_internal ((char *) NULL, 0, buffer);
-}
-
-#else
-/*VARARGS1 */
-void
-as_bad (format, va_alist)
- const char *format;
- va_dcl
+void
+as_bad (const char *format, ...)
{
va_list args;
char buffer[2000];
- va_start (args);
- vsprintf (buffer, format, args);
+ va_start (args, format);
+ vsnprintf (buffer, sizeof (buffer), format, args);
va_end (args);
as_bad_internal ((char *) NULL, 0, buffer);
}
-#endif /* not NO_STDARG */
-/* as_bad_where, like as_bad but the file name and line number are
- passed in. Unfortunately, we have to repeat the function in order
- to handle the varargs correctly and portably. */
+/* Like as_bad but the file name and line number are passed in.
+ Unfortunately, we have to repeat the function in order to handle
+ the varargs correctly and portably. */
-#ifdef USE_STDARG
-void
-as_bad_where (char *file, unsigned int line, const char *format,...)
+void
+as_bad_where (const char *file, unsigned int line, const char *format, ...)
{
va_list args;
char buffer[2000];
va_start (args, format);
- vsprintf (buffer, format, args);
+ vsnprintf (buffer, sizeof (buffer), format, args);
va_end (args);
as_bad_internal (file, line, buffer);
}
-#else
-/*VARARGS1 */
-void
-as_bad_where (file, line, format, va_alist)
- char *file;
- unsigned int line;
- const char *format;
- va_dcl
-{
- va_list args;
- char buffer[2000];
-
- va_start (args);
- vsprintf (buffer, format, args);
- va_end (args);
+/* Send to stderr a string as a fatal message, and print location of
+ error in input file(s).
+ Please only use this for when we DON'T have some recovery action.
+ It xexit()s with a warning status. */
- as_bad_internal (file, line, buffer);
-}
-#endif /* not NO_STDARG */
-
-/*
- * a s _ f a t a l ()
- *
- * Send to stderr a string as a fatal message, and print location of error in
- * input file(s).
- * Please only use this for when we DON'T have some recovery action.
- * It xexit()s with a warning status.
- */
-
-#ifdef USE_STDARG
-void
-as_fatal (const char *format,...)
+void
+as_fatal (const char *format, ...)
{
va_list args;
vfprintf (stderr, format, args);
(void) putc ('\n', stderr);
va_end (args);
+ /* Delete the output file, if it exists. This will prevent make from
+ thinking that a file was created and hence does not need rebuilding. */
+ if (out_file_name != NULL)
+ unlink_if_ordinary (out_file_name);
xexit (EXIT_FAILURE);
-} /* as_fatal() */
-#else
-/*VARARGS1*/
-void
-as_fatal (format, va_alist)
- char *format;
- va_dcl
-{
- va_list args;
-
- as_show_where ();
- va_start (args);
- fprintf (stderr, _("Fatal error: "));
- vfprintf (stderr, format, args);
- (void) putc ('\n', stderr);
- va_end (args);
- xexit (EXIT_FAILURE);
-} /* as_fatal() */
-#endif /* not NO_STDARG */
+}
-/*
- * as_assert: Indicate assertion failure.
- * Arguments: Filename, line number, optional function name.
- */
+/* Indicate internal constency error.
+ Arguments: Filename, line number, optional function name.
+ FILENAME may be NULL, which we use for crash-via-signal. */
void
-as_assert (file, line, fn)
- const char *file, *fn;
- int line;
+as_abort (const char *file, int line, const char *fn)
{
as_show_where ();
- fprintf (stderr, _("Internal error!\n"));
- if (fn)
- fprintf (stderr, _("Assertion failure in %s at %s line %d.\n"),
- fn, file, line);
+
+ if (!file)
+ fprintf (stderr, _("Internal error (%s).\n"), fn ? fn : "unknown");
+ else if (fn)
+ fprintf (stderr, _("Internal error in %s at %s:%d.\n"), fn, file, line);
else
- fprintf (stderr, _("Assertion failure at %s line %d.\n"), file, line);
+ fprintf (stderr, _("Internal error at %s:%d.\n"), file, line);
+
fprintf (stderr, _("Please report this bug.\n"));
+
xexit (EXIT_FAILURE);
}
-/* as_abort: Print a friendly message saying how totally hosed we are,
- and exit without producing a core file. */
+/* Handler for fatal signals, such as SIGSEGV. */
+
+static void
+signal_crash (int signo)
+{
+ /* Reset, to prevent unbounded recursion. */
+ signal (signo, SIG_DFL);
+
+ as_abort (NULL, 0, strsignal (signo));
+}
+
+/* Register signal handlers, for less abrubt crashes. */
+
void
-as_abort (file, line, fn)
- const char *file, *fn;
- int line;
+signal_init (void)
{
- as_show_where ();
- if (fn)
- fprintf (stderr, _("Internal error, aborting at %s line %d in %s\n"),
- file, line, fn);
- else
- fprintf (stderr, _("Internal error, aborting at %s line %d\n"),
- file, line);
- fprintf (stderr, _("Please report this bug.\n"));
- xexit (EXIT_FAILURE);
+#ifdef SIGSEGV
+ signal (SIGSEGV, signal_crash);
+#endif
+#ifdef SIGILL
+ signal (SIGILL, signal_crash);
+#endif
+#ifdef SIGBUS
+ signal (SIGBUS, signal_crash);
+#endif
+#ifdef SIGABRT
+ signal (SIGABRT, signal_crash);
+#endif
+#if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT)
+ signal (SIGIOT, signal_crash);
+#endif
+#ifdef SIGFPE
+ signal (SIGFPE, signal_crash);
+#endif
}
/* Support routines. */
void
-fprint_value (file, val)
- FILE *file;
- valueT val;
+sprint_value (char *buf, valueT val)
{
if (sizeof (val) <= sizeof (long))
{
- fprintf (file, "%ld", (long) val);
+ sprintf (buf, "%ld", (long) val);
return;
}
-#ifdef BFD_ASSEMBLER
if (sizeof (val) <= sizeof (bfd_vma))
{
- fprintf_vma (file, val);
+ sprintf_vma (buf, val);
return;
}
-#endif
abort ();
}
-void
-sprint_value (buf, val)
- char *buf;
- valueT val;
+#define HEX_MAX_THRESHOLD 1024
+#define HEX_MIN_THRESHOLD -(HEX_MAX_THRESHOLD)
+
+static void
+as_internal_value_out_of_range (const char *prefix,
+ offsetT val,
+ offsetT min,
+ offsetT max,
+ const char *file,
+ unsigned line,
+ int bad)
{
- if (sizeof (val) <= sizeof (long))
+ const char * err;
+
+ if (prefix == NULL)
+ prefix = "";
+
+ if (val >= min && val <= max)
{
- sprintf (buf, "%ld", (long) val);
+ addressT right = max & -max;
+
+ if (max <= 1)
+ abort ();
+
+ /* xgettext:c-format */
+ err = _("%s out of domain (%" BFD_VMA_FMT "d is not a multiple of %" \
+ BFD_VMA_FMT "d)");
+ if (bad)
+ as_bad_where (file, line, err, prefix, val, right);
+ else
+ as_warn_where (file, line, err, prefix, val, right);
return;
}
-#ifdef BFD_ASSEMBLER
- if (sizeof (val) <= sizeof (bfd_vma))
+
+ if ( val < HEX_MAX_THRESHOLD
+ && min < HEX_MAX_THRESHOLD
+ && max < HEX_MAX_THRESHOLD
+ && val > HEX_MIN_THRESHOLD
+ && min > HEX_MIN_THRESHOLD
+ && max > HEX_MIN_THRESHOLD)
{
- sprintf_vma (buf, val);
- return;
+ /* xgettext:c-format */
+ err = _("%s out of range (%" BFD_VMA_FMT "d is not between %" \
+ BFD_VMA_FMT "d and %" BFD_VMA_FMT "d)");
+
+ if (bad)
+ as_bad_where (file, line, err, prefix, val, min, max);
+ else
+ as_warn_where (file, line, err, prefix, val, min, max);
}
-#endif
- abort ();
+ else
+ {
+ char val_buf [sizeof (val) * 3 + 2];
+ char min_buf [sizeof (val) * 3 + 2];
+ char max_buf [sizeof (val) * 3 + 2];
+
+ if (sizeof (val) > sizeof (bfd_vma))
+ abort ();
+
+ sprintf_vma (val_buf, (bfd_vma) val);
+ sprintf_vma (min_buf, (bfd_vma) min);
+ sprintf_vma (max_buf, (bfd_vma) max);
+
+ /* xgettext:c-format. */
+ err = _("%s out of range (0x%s is not between 0x%s and 0x%s)");
+
+ if (bad)
+ as_bad_where (file, line, err, prefix, val_buf, min_buf, max_buf);
+ else
+ as_warn_where (file, line, err, prefix, val_buf, min_buf, max_buf);
+ }
+}
+
+void
+as_warn_value_out_of_range (const char *prefix,
+ offsetT value,
+ offsetT min,
+ offsetT max,
+ const char *file,
+ unsigned line)
+{
+ as_internal_value_out_of_range (prefix, value, min, max, file, line, 0);
}
-/* end of messages.c */
+void
+as_bad_value_out_of_range (const char *prefix,
+ offsetT value,
+ offsetT min,
+ offsetT max,
+ const char *file,
+ unsigned line)
+{
+ as_internal_value_out_of_range (prefix, value, min, max, file, line, 1);
+}
projects / deliverable / binutils-gdb.git / blobdiff