/* messages.c - error reporter -
- Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001
- 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 *));
+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.
- */
+ 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)
static int warning_count;
int
-had_warnings ()
+had_warnings (void)
{
- return (warning_count);
+ return warning_count;
}
/* Nonzero if we've hit a 'bad error', and should not write an obj file,
static int error_count;
int
-had_errors ()
+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);
-}
-
-/* Like perror(3), but with more info. */
-
-void
-as_perror (gripe, filename)
- const char *gripe; /* Unpunctuated error theme. */
- const char *filename;
-{
- const char *errtxt;
-
- 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
+ {
+ if (line != 0)
+ fprintf (stderr, "%s:%u: ", file, line);
+ else
+ fprintf (stderr, "%s: ", file);
+ }
}
/* Send to stderr a string as a warning, and locate warning
Please explain in string (which may have '\n's) what recovery was
done. */
-#ifdef USE_STDARG
void
as_tsktsk (const char *format, ...)
{
va_end (args);
(void) putc ('\n', stderr);
}
-#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);
-}
-#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
Please explain in string (which may have '\n's) what recovery was
done. */
-#ifdef USE_STDARG
void
as_warn (const char *format, ...)
{
if (!flag_no_warnings)
{
va_start (args, format);
- vsprintf (buffer, format, args);
- va_end (args);
- as_warn_internal ((char *) NULL, 0, buffer);
- }
-}
-#else
-void
-as_warn (format, va_alist)
- 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 ((char *) NULL, 0, buffer);
}
}
-#endif /* not NO_STDARG */
/* 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, ...)
+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);
- }
-}
-#else
-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);
}
}
-#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
}
/* 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
+ 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. */
-#ifdef USE_STDARG
void
as_bad (const char *format, ...)
{
char buffer[2000];
va_start (args, format);
- vsprintf (buffer, format, args);
+ vsnprintf (buffer, sizeof (buffer), format, args);
va_end (args);
as_bad_internal ((char *) NULL, 0, buffer);
}
-#else
-void
-as_bad (format, va_alist)
- const char *format;
- va_dcl
-{
- va_list args;
- char buffer[2000];
-
- va_start (args);
- vsprintf (buffer, format, args);
- va_end (args);
-
- as_bad_internal ((char *) NULL, 0, buffer);
-}
-#endif /* not NO_STDARG */
-
/* 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, ...)
+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
-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);
-
- as_bad_internal (file, line, buffer);
-}
-#endif /* not NO_STDARG */
-
/* 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, ...)
{
/* 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 (out_file_name);
- xexit (EXIT_FAILURE);
-}
-#else
-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);
+ unlink_if_ordinary (out_file_name);
xexit (EXIT_FAILURE);
}
-#endif /* not NO_STDARG */
-/* 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);
+}
+
+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