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Add -ws switch to display contents of .debug_str sections

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This commit is contained in:
Nick Clifton
2001-11-19 14:35:57 +00:00
parent b8908f93e2
commit 261a45adff
3 changed files with 174 additions and 54 deletions
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201
binutils/readelf.c
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@@ -123,6 +123,7 @@ int do_debug_aranges;
int do_debug_frames;
int do_debug_frames_interp;
int do_debug_macinfo;
int do_debug_str;
int do_arch;
int do_notes;
int is_32bit_elf;
@@ -220,7 +221,11 @@ static int display_debug_abbrev PARAMS ((Elf32_Internal_Sh
static int display_debug_aranges PARAMS ((Elf32_Internal_Shdr *, unsigned char *, FILE *));
static int display_debug_frames PARAMS ((Elf32_Internal_Shdr *, unsigned char *, FILE *));
static int display_debug_macinfo PARAMS ((Elf32_Internal_Shdr *, unsigned char *, FILE *));
static int display_debug_str PARAMS ((Elf32_Internal_Shdr *, unsigned char *, FILE *));
static unsigned char * process_abbrev_section PARAMS ((unsigned char *, unsigned char *));
static void load_debug_str PARAMS ((FILE *));
static void free_debug_str PARAMS ((void));
static const char * fetch_indirect_string PARAMS ((unsigned long));
static unsigned long read_leb128 PARAMS ((unsigned char *, int *, int));
static int process_extended_line_op PARAMS ((unsigned char *, int, int));
static void reset_state_machine PARAMS ((int));
@@ -276,7 +281,7 @@ typedef int Elf32_Word;
#define BYTE_GET8(field) byte_get (field, 8)
#endif
#define NUM_ELEM(array) (sizeof (array) / sizeof ((array)[0]))
#define NUM_ELEM(array) (sizeof (array) / sizeof ((array)[0]))
#define GET_ELF_SYMBOLS(file, offset, size) \
(is_32bit_elf ? get_32bit_elf_symbols (file, offset, size) \
@@ -2072,7 +2077,7 @@ usage ()
fprintf (stdout, _(" -D or --use-dynamic Use the dynamic section info when displaying symbols\n"));
fprintf (stdout, _(" -x <number> or --hex-dump=<number>\n"));
fprintf (stdout, _(" Dump the contents of section <number>\n"));
fprintf (stdout, _(" -w[liaprmf] or --debug-dump[=line,=info,=abbrev,=pubnames,=ranges,=macro,=frames]\n"));
fprintf (stdout, _(" -w[liaprmfs] or --debug-dump[=line,=info,=abbrev,=pubnames,=ranges,=macro,=frames,=str]\n"));
fprintf (stdout, _(" Display the contents of DWARF2 debug sections\n"));
#ifdef SUPPORT_DISASSEMBLY
fprintf (stdout, _(" -i <number> or --instruction-dump=<number>\n"));
@@ -2252,6 +2257,11 @@ parse_args (argc, argv)
do_debug_macinfo = 1;
break;
case 's':
case 'S':
do_debug_str = 1;
break;
default:
warn (_("Unrecognised debug option '%s'\n"), optarg);
break;
@@ -3046,7 +3056,7 @@ process_section_headers (file)
}
else if ((do_debugging || do_debug_info || do_debug_abbrevs
|| do_debug_lines || do_debug_pubnames || do_debug_aranges
|| do_debug_frames || do_debug_macinfo)
|| do_debug_frames || do_debug_macinfo || do_debug_str)
&& strncmp (name, ".debug_", 7) == 0)
{
name += 7;
@@ -3059,6 +3069,7 @@ process_section_headers (file)
|| (do_debug_aranges && (strcmp (name, "aranges") == 0))
|| (do_debug_frames && (strcmp (name, "frame") == 0))
|| (do_debug_macinfo && (strcmp (name, "macinfo") == 0))
|| (do_debug_str && (strcmp (name, "str") == 0))
)
request_dump (i, DEBUG_DUMP);
}
@@ -4091,7 +4102,6 @@ process_dynamic_segment (file)
dynamic_strings = (char *) get_data (NULL, file, offset, str_tab_len,
_("dynamic string table"));
break;
}
}
@@ -4740,12 +4750,12 @@ process_version_sections (file)
case SHT_GNU_versym:
{
Elf32_Internal_Shdr * link_section;
int total;
int cnt;
unsigned char * edata;
unsigned short * data;
char * strtab;
Elf_Internal_Sym * symbols;
int total;
int cnt;
unsigned char * edata;
unsigned short * data;
char * strtab;
Elf_Internal_Sym * symbols;
Elf32_Internal_Shdr * string_sec;
link_section = section_headers + section->sh_link;
@@ -6307,9 +6317,6 @@ get_FORM_name (form)
}
}
static const char *debug_str;
static bfd_vma debug_str_size;
/* FIXME: There are better and more effiecint ways to handle
these structures. For now though, I just want something that
is simple to implement. */
@@ -6933,6 +6940,123 @@ decode_location_expression (data, pointer_size, length)
}
static const char * debug_str_contents;
static bfd_vma debug_str_size;
static void
load_debug_str (file)
FILE * file;
{
Elf32_Internal_Shdr * sec;
int i;
/* If it is already loaded, do nothing. */
if (debug_str_contents != NULL)
return;
/* Locate the .debug_str section. */
for (i = 0, sec = section_headers;
i < elf_header.e_shnum;
i ++, sec ++)
if (strcmp (SECTION_NAME (sec), ".debug_str") == 0)
break;
if (i == elf_header.e_shnum || sec->sh_size == 0)
return;
debug_str_size = sec->sh_size;
debug_str_contents = ((char *)
get_data (NULL, file, sec->sh_offset, sec->sh_size,
_("debug_str section data")));
}
static void
free_debug_str ()
{
if (debug_str_contents == NULL)
return;
free ((char *) debug_str_contents);
debug_str_contents = NULL;
debug_str_size = 0;
}
static const char *
fetch_indirect_string (offset)
unsigned long offset;
{
if (debug_str_contents == NULL)
return _("<no .debug_str section>");
if (offset > debug_str_size)
return _("<offset is too big>");
return debug_str_contents + offset;
}
static int
display_debug_str (section, start, file)
Elf32_Internal_Shdr * section;
unsigned char * start;
FILE * file ATTRIBUTE_UNUSED;
{
unsigned long bytes;
bfd_vma addr;
addr = section->sh_addr;
bytes = section->sh_size;
if (bytes == 0)
{
printf (_("\nThe .debug_str section is empty.\n"));
return 0;
}
printf (_("Contents of the .debug_str section:\n\n"));
while (bytes)
{
int j;
int k;
int lbytes;
lbytes = (bytes > 16 ? 16 : bytes);
printf (" 0x%8.8lx ", (unsigned long) addr);
for (j = 0; j < 16; j++)
{
if (j < lbytes)
printf ("%2.2x", start [j]);
else
printf (" ");
if ((j & 3) == 3)
printf (" ");
}
for (j = 0; j < lbytes; j++)
{
k = start [j];
if (k >= ' ' && k < 0x80)
printf ("%c", k);
else
printf (".");
}
putchar ('\n');
start += lbytes;
addr += lbytes;
bytes -= lbytes;
}
return 1;
}
static unsigned char *
read_and_display_attr_value (attribute, form, data, cu_offset, pointer_size)
unsigned long attribute;
@@ -7061,13 +7185,8 @@ read_and_display_attr_value (attribute, form, data, cu_offset, pointer_size)
break;
case DW_FORM_strp:
if (debug_str == NULL)
warn (_("DW_FORM_strp used but no .debug_str section\n"));
else if (uvalue >= debug_str_size)
warn (_("DW_FORM_strp %lx points outside of .debug_str section\n"),
uvalue);
else
printf (" %s", debug_str + uvalue);
printf (_(" (indirect string, offset: 0x%lx): "), uvalue);
printf (fetch_indirect_string (uvalue));
break;
case DW_FORM_indirect:
@@ -7259,23 +7378,7 @@ display_debug_info (section, start, file)
printf (_("The section %s contains:\n\n"), SECTION_NAME (section));
{
Elf32_Internal_Shdr * sec;
int i;
/* Locate the .debug_str section and read it. */
for (i = 0, sec = section_headers;
i < elf_header.e_shnum;
i ++, sec ++)
if (strcmp (SECTION_NAME (sec), ".debug_str") == 0 && sec->sh_size != 0)
{
debug_str = (const char *)
get_data (NULL, file, sec->sh_offset, sec->sh_size,
_("debug_str section data"));
debug_str_size = sec->sh_size;
break;
}
}
load_debug_str (file);
while (start < end)
{
@@ -7378,8 +7481,7 @@ display_debug_info (section, start, file)
continue;
}
if (first_abbrev != NULL)
free_abbrevs ();
free_abbrevs ();
/* Read in the abbrevs used by this compilation unit. */
@@ -7461,11 +7563,7 @@ display_debug_info (section, start, file)
}
}
if (debug_str != NULL)
{
free ((char *) debug_str);
debug_str = NULL;
}
free_debug_str ();
printf ("\n");
@@ -8262,22 +8360,24 @@ prescan_debug_info (section, start, file)
sections. */
struct
{
char * name;
const char * const name;
int (* display) PARAMS ((Elf32_Internal_Shdr *, unsigned char *, FILE *));
int (* prescan) PARAMS ((Elf32_Internal_Shdr *, unsigned char *, FILE *));
}
debug_displays[] =
{
{ ".debug_info", display_debug_info, prescan_debug_info },
{ ".debug_abbrev", display_debug_abbrev, NULL },
{ ".debug_line", display_debug_lines, NULL },
{ ".debug_aranges", display_debug_aranges, NULL },
{ ".debug_pubnames", display_debug_pubnames, NULL },
{ ".debug_frame", display_debug_frames, NULL },
{ ".debug_info", display_debug_info, prescan_debug_info },
{ ".debug_line", display_debug_lines, NULL },
{ ".debug_pubnames", display_debug_pubnames, NULL },
{ ".eh_frame", display_debug_frames, NULL },
{ ".debug_macinfo", display_debug_macinfo, NULL },
{ ".debug_str", display_debug_str, NULL },
{ ".debug_pubtypes", display_debug_not_supported, NULL },
{ ".debug_str", display_debug_not_supported, NULL },
{ ".debug_ranges", display_debug_not_supported, NULL },
{ ".debug_static_func", display_debug_not_supported, NULL },
{ ".debug_static_vars", display_debug_not_supported, NULL },
{ ".debug_types", display_debug_not_supported, NULL },
@@ -8324,8 +8424,7 @@ display_debug_section (section, file)
/* If we loaded in the abbrev section at some point,
we must release it here. */
if (first_abbrev != NULL)
free_abbrevs ();
free_abbrevs ();
return 1;
}