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Support _debuglink recursions.

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2006-10-08  Soren Sandmann <sandmann@daimi.au.dk>

	* binfile.c (find_separate_debug_file): Support _debuglink
	recursions.

	* elfparser.c: Check that the sections have valid types before
	using them.
This commit is contained in:
Soren Sandmann
2006-10-08 17:45:09 +00:00
committed by Søren Sandmann Pedersen
parent 29a4acaa94
commit c27e5debc5
5 changed files with 154 additions and 39 deletions
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60
binfile.c
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@ -88,8 +88,9 @@ separate_debug_file_exists (const char *name, guint32 crc)
static const char *const debug_file_directory = "/usr/lib/debug";
static ElfParser *
find_separate_debug_file (ElfParser *elf,
const char *filename)
get_debug_file (ElfParser *elf,
const char *filename,
char **new_name)
{
const char *basename;
char *dir;
@ -104,7 +105,7 @@ find_separate_debug_file (ElfParser *elf,
basename = elf_parser_get_debug_link (elf, &crc32);
if (!basename)
return elf;
return NULL;
dir = g_path_get_dirname (filename);
@ -116,7 +117,11 @@ find_separate_debug_file (ElfParser *elf,
{
result = separate_debug_file_exists (tries[i], crc32);
if (result)
{
if (new_name)
*new_name = g_strdup (tries[i]);
break;
}
}
g_free (dir);
@ -124,15 +129,40 @@ find_separate_debug_file (ElfParser *elf,
for (i = 0; i < 3; ++i)
g_free (tries[i]);
if (result)
return result;
}
static ElfParser *
find_separate_debug_file (ElfParser *elf,
const char *filename)
{
ElfParser *debug;
char *debug_name = NULL;
char *fname;
fname = g_strdup (filename);
/* FIXME: there is an infinite loop if there are cycles in
* the debug_link graph
*/
do
{
elf_parser_free (elf);
return result;
}
else
{
return elf;
debug = get_debug_file (elf, fname, &debug_name);
if (debug)
{
elf_parser_free (elf);
elf = debug;
g_free (fname);
fname = debug_name;
}
}
while (debug);
g_free (fname);
return elf;
}
static GHashTable *bin_files;
@ -163,7 +193,7 @@ bin_file_new (const char *filename)
if (bf->elf)
bf->text_offset = elf_parser_get_text_offset (bf->elf);
bf->elf = find_separate_debug_file (bf->elf, filename);
bf->elf = find_separate_debug_file (bf->elf, filename); /* find_separate_debug_file (bf->elf, filename); */
bf->inode = read_inode (filename);
bf->filename = g_strdup (filename);
bf->undefined_name = g_strdup_printf ("In file %s", filename);
@ -210,7 +240,15 @@ bin_file_lookup_symbol (BinFile *bin_file,
return (const BinSymbol *)sym;
}
}
#if 0
else
g_print ("no elf file for %s\n", bin_file->filename);
#endif
#if 0
g_print ("%lx undefined in %s (textoffset %d)\n", address + bin_file->text_offset, bin_file->filename, bin_file->text_offset);
#endif
return (const BinSymbol *)bin_file->undefined_name;
}