/* rddbg.c -- Read debugging information into a generic form.
- Copyright 1995, 1996, 1997, 2000, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2023 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@cygnus.com>.
This file is part of GNU Binutils.
This program 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 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
/* This file reads debugging information into a generic form. This
file knows how to dig the debugging information out of an object
file. */
+#include "sysdep.h"
#include "bfd.h"
-#include "bucomm.h"
#include "libiberty.h"
+#include "bucomm.h"
#include "debug.h"
#include "budbg.h"
-static bfd_boolean read_section_stabs_debugging_info
- (bfd *, asymbol **, long, void *, bfd_boolean *);
-static bfd_boolean read_symbol_stabs_debugging_info
- (bfd *, asymbol **, long, void *, bfd_boolean *);
-static bfd_boolean read_ieee_debugging_info (bfd *, void *, bfd_boolean *);
+static bool read_section_stabs_debugging_info
+ (bfd *, asymbol **, long, void *, bool *);
+static bool read_symbol_stabs_debugging_info
+ (bfd *, asymbol **, long, void *, bool *);
static void save_stab (int, int, bfd_vma, const char *);
static void stab_context (void);
static void free_saved_stabs (void);
pointer. */
void *
-read_debugging_info (bfd *abfd, asymbol **syms, long symcount)
+read_debugging_info (bfd *abfd, asymbol **syms, long symcount,
+ bool no_messages)
{
void *dhandle;
- bfd_boolean found;
+ bool found;
- dhandle = debug_init ();
+ dhandle = debug_init (abfd);
if (dhandle == NULL)
return NULL;
+ if (!debug_set_filename (dhandle, bfd_get_filename (abfd)))
+ return NULL;
+
if (! read_section_stabs_debugging_info (abfd, syms, symcount, dhandle,
&found))
return NULL;
return NULL;
}
- if (bfd_get_flavour (abfd) == bfd_target_ieee_flavour)
- {
- if (! read_ieee_debugging_info (abfd, dhandle, &found))
- return NULL;
- }
-
/* Try reading the COFF symbols if we didn't find any stabs in COFF
sections. */
if (! found
{
if (! parse_coff (abfd, syms, symcount, dhandle))
return NULL;
- found = TRUE;
+ found = true;
}
if (! found)
{
- non_fatal (_("%s: no recognized debugging information"),
- bfd_get_filename (abfd));
+ if (! no_messages)
+ non_fatal (_("%s: no recognized debugging information"),
+ bfd_get_filename (abfd));
return NULL;
}
/* Read stabs in sections debugging information from a BFD. */
-static bfd_boolean
+static bool
read_section_stabs_debugging_info (bfd *abfd, asymbol **syms, long symcount,
- void *dhandle, bfd_boolean *pfound)
+ void *dhandle, bool *pfound)
{
static struct
{
const char *secname;
const char *strsecname;
- } names[] = { { ".stab", ".stabstr" },
- { "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr" } };
+ }
+ names[] =
+ {
+ { ".stab", ".stabstr" },
+ { "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr" },
+ { "$GDB_SYMBOLS$", "$GDB_STRINGS$" }
+ };
unsigned int i;
void *shandle;
+ bool ret = false;
- *pfound = FALSE;
+ *pfound = false;
shandle = NULL;
for (i = 0; i < sizeof names / sizeof names[0]; i++)
sec = bfd_get_section_by_name (abfd, names[i].secname);
strsec = bfd_get_section_by_name (abfd, names[i].strsecname);
- if (sec != NULL && strsec != NULL)
+ if (sec != NULL
+ && (bfd_section_flags (sec) & SEC_HAS_CONTENTS) != 0
+ && bfd_section_size (sec) >= 12
+ && strsec != NULL
+ && (bfd_section_flags (strsec) & SEC_HAS_CONTENTS) != 0)
{
bfd_size_type stabsize, strsize;
bfd_byte *stabs, *strings;
bfd_byte *stab;
bfd_size_type stroff, next_stroff;
- stabsize = bfd_section_size (abfd, sec);
- stabs = (bfd_byte *) xmalloc (stabsize);
- if (! bfd_get_section_contents (abfd, sec, stabs, 0, stabsize))
+ if (!bfd_malloc_and_get_section (abfd, sec, &stabs))
{
fprintf (stderr, "%s: %s: %s\n",
bfd_get_filename (abfd), names[i].secname,
bfd_errmsg (bfd_get_error ()));
- return FALSE;
+ goto out;
}
- strsize = bfd_section_size (abfd, strsec);
- strings = (bfd_byte *) xmalloc (strsize);
- if (! bfd_get_section_contents (abfd, strsec, strings, 0, strsize))
+ if (!bfd_malloc_and_get_section (abfd, strsec, &strings))
{
fprintf (stderr, "%s: %s: %s\n",
bfd_get_filename (abfd), names[i].strsecname,
bfd_errmsg (bfd_get_error ()));
- return FALSE;
+ free (stabs);
+ goto out;
}
-
+ /* Zero terminate the strings table, just in case. */
+ strsize = bfd_section_size (strsec);
+ if (strsize != 0)
+ strings [strsize - 1] = 0;
if (shandle == NULL)
{
- shandle = start_stab (dhandle, abfd, TRUE, syms, symcount);
+ shandle = start_stab (dhandle, abfd, true, syms, symcount);
if (shandle == NULL)
- return FALSE;
+ {
+ free (strings);
+ free (stabs);
+ goto out;
+ }
}
- *pfound = TRUE;
+ *pfound = true;
stroff = 0;
next_stroff = 0;
- for (stab = stabs; stab < stabs + stabsize; stab += 12)
+ stabsize = bfd_section_size (sec);
+ /* PR 17512: file: 078-60391-0.001:0.1. */
+ for (stab = stabs; stab <= (stabs + stabsize) - 12; stab += 12)
{
unsigned int strx;
int type;
- int other;
+ int other ATTRIBUTE_UNUSED;
int desc;
bfd_vma value;
}
else
{
+ size_t len;
char *f, *s;
- f = NULL;
-
- if (stroff + strx > strsize)
+ if (stroff + strx >= strsize)
{
- fprintf (stderr, "%s: %s: stab entry %ld is corrupt, strx = 0x%x, type = %d\n",
+ fprintf (stderr, _("%s: %s: stab entry %ld is corrupt, strx = 0x%x, type = %d\n"),
bfd_get_filename (abfd), names[i].secname,
(long) (stab - stabs) / 12, strx, type);
continue;
}
s = (char *) strings + stroff + strx;
+ f = NULL;
- while (s[strlen (s) - 1] == '\\'
- && stab + 12 < stabs + stabsize)
+ /* PR 17512: file: 002-87578-0.001:0.1.
+ It is possible to craft a file where, without the 'strlen (s) > 0',
+ an attempt to read the byte before 'strings' would occur. */
+ while ((len = strlen (s)) > 0
+ && s[len - 1] == '\\'
+ && stab + 16 <= stabs + stabsize)
{
char *p;
stab += 12;
- p = s + strlen (s) - 1;
+ p = s + len - 1;
*p = '\0';
- s = concat (s,
- ((char *) strings
- + stroff
- + bfd_get_32 (abfd, stab)),
+ strx = stroff + bfd_get_32 (abfd, stab);
+ if (strx >= strsize)
+ {
+ fprintf (stderr, _("%s: %s: stab entry %ld is corrupt\n"),
+ bfd_get_filename (abfd), names[i].secname,
+ (long) (stab - stabs) / 12);
+ break;
+ }
+
+ s = concat (s, (char *) strings + strx,
(const char *) NULL);
/* We have to restore the backslash, because, if
see the same string more than once. */
*p = '\\';
- if (f != NULL)
- free (f);
+ free (f);
f = s;
}
save_stab (type, desc, value, s);
- if (! parse_stab (dhandle, shandle, type, desc, value, s))
+ if (!parse_stab (dhandle, shandle, type, desc, value, s))
{
stab_context ();
free_saved_stabs ();
- return FALSE;
+ free (f);
+ free (stabs);
+ free (strings);
+ goto out;
}
- /* Don't free f, since I think the stabs code
- expects strings to hang around. This should be
- straightened out. FIXME. */
+ free (f);
}
}
free_saved_stabs ();
free (stabs);
-
- /* Don't free strings, since I think the stabs code expects
- the strings to hang around. This should be straightened
- out. FIXME. */
+ free (strings);
}
}
+ ret = true;
+ out:
if (shandle != NULL)
{
- if (! finish_stab (dhandle, shandle))
- return FALSE;
+ if (! finish_stab (dhandle, shandle, ret))
+ return false;
}
- return TRUE;
+ return ret;
}
/* Read stabs in the symbol table. */
-static bfd_boolean
+static bool
read_symbol_stabs_debugging_info (bfd *abfd, asymbol **syms, long symcount,
- void *dhandle, bfd_boolean *pfound)
+ void *dhandle, bool *pfound)
{
void *shandle;
asymbol **ps, **symend;
if (shandle == NULL)
{
- shandle = start_stab (dhandle, abfd, FALSE, syms, symcount);
+ shandle = start_stab (dhandle, abfd, false, syms, symcount);
if (shandle == NULL)
- return FALSE;
+ return false;
}
- *pfound = TRUE;
+ *pfound = true;
s = i.name;
+ if (s == NULL || strlen (s) < 1)
+ break;
f = NULL;
- while (s[strlen (s) - 1] == '\\'
+
+ while (strlen (s) > 0
+ && s[strlen (s) - 1] == '\\'
&& ps + 1 < symend)
{
char *sc, *n;
sc[strlen (sc) - 1] = '\0';
n = concat (sc, bfd_asymbol_name (*ps), (const char *) NULL);
free (sc);
- if (f != NULL)
- free (f);
+ free (f);
f = n;
s = n;
}
save_stab (i.stab_type, i.stab_desc, i.value, s);
- if (! parse_stab (dhandle, shandle, i.stab_type, i.stab_desc,
- i.value, s))
+ if (!parse_stab (dhandle, shandle, i.stab_type, i.stab_desc,
+ i.value, s))
{
stab_context ();
- free_saved_stabs ();
- return FALSE;
+ free (f);
+ break;
}
- /* Don't free f, since I think the stabs code expects
- strings to hang around. This should be straightened out.
- FIXME. */
+ free (f);
}
}
+ bool ret = ps >= symend;
free_saved_stabs ();
if (shandle != NULL)
{
- if (! finish_stab (dhandle, shandle))
- return FALSE;
+ if (! finish_stab (dhandle, shandle, ret))
+ return false;
}
- return TRUE;
-}
-
-/* Read IEEE debugging information. */
-
-static bfd_boolean
-read_ieee_debugging_info (bfd *abfd, void *dhandle, bfd_boolean *pfound)
-{
- asection *dsec;
- bfd_size_type size;
- bfd_byte *contents;
-
- /* The BFD backend puts the debugging information into a section
- named .debug. */
-
- dsec = bfd_get_section_by_name (abfd, ".debug");
- if (dsec == NULL)
- return TRUE;
-
- size = bfd_section_size (abfd, dsec);
- contents = (bfd_byte *) xmalloc (size);
- if (! bfd_get_section_contents (abfd, dsec, contents, 0, size))
- return FALSE;
-
- if (! parse_ieee (dhandle, abfd, contents, size))
- return FALSE;
-
- free (contents);
-
- *pfound = TRUE;
-
- return TRUE;
+ return ret;
}
\f
/* Record stabs strings, so that we can give some context for errors. */
static void
save_stab (int type, int desc, bfd_vma value, const char *string)
{
- if (saved_stabs[saved_stabs_index].string != NULL)
- free (saved_stabs[saved_stabs_index].string);
+ free (saved_stabs[saved_stabs_index].string);
saved_stabs[saved_stabs_index].type = type;
saved_stabs[saved_stabs_index].desc = desc;
saved_stabs[saved_stabs_index].value = value;
else
fprintf (stderr, "%-6d", stabp->type);
fprintf (stderr, " %-6d ", stabp->desc);
- fprintf_vma (stderr, stabp->value);
+ fprintf (stderr, "%08" PRIx64, (uint64_t) stabp->value);
if (stabp->type != 0)
fprintf (stderr, " %s", stabp->string);
fprintf (stderr, "\n");
for (i = 0; i < SAVE_STABS_COUNT; i++)
{
- if (saved_stabs[i].string != NULL)
- {
- free (saved_stabs[i].string);
- saved_stabs[i].string = NULL;
- }
+ free (saved_stabs[i].string);
+ saved_stabs[i].string = NULL;
}
saved_stabs_index = 0;
projects / binutils-gdb.git / blobdiff