objdump --no-addresses

I find this useful when needing to compare compiler output, where the
address of the instruction and the value of symbols results in
unwanted differences.

	* objdump.c (no_addresses): New static var.
	(usage): Print help for --no-addresses.
	(long_options): Add --no-addresses entry.
	(objdump_print_addr_with_sym, objdump_print_addr): Omit symbol address.
	(disassemble_bytes): Don't print current line address, or reloc
	address.
	* doc/binutils.texi: Document objdump --no-addresses.
This commit is contained in:
Alan Modra 2020-04-15 19:26:55 +09:30
parent 7ecb51549a
commit b1bc1394df
3 changed files with 54 additions and 18 deletions

View File

@ -1,3 +1,13 @@
2020-04-15 Alan Modra <amodra@gmail.com>
* objdump.c (no_addresses): New static var.
(usage): Print help for --no-addresses.
(long_options): Add --no-addresses entry.
(objdump_print_addr_with_sym, objdump_print_addr): Omit symbol address.
(disassemble_bytes): Don't print current line address, or reloc
address.
* doc/binutils.texi: Document objdump --no-addresses.
2020-04-15 Alan Modra <amodra@gmail.com>
PR 25822

View File

@ -2161,6 +2161,7 @@ objdump [@option{-a}|@option{--archive-headers}]
[@option{-w}|@option{--wide}]
[@option{--start-address=}@var{address}]
[@option{--stop-address=}@var{address}]
[@option{--no-addresses}]
[@option{--prefix-addresses}]
[@option{--[no-]show-raw-insn}]
[@option{--adjust-vma=}@var{offset}]
@ -2314,6 +2315,10 @@ Note if the @option{--dwarf=follow-links} option has also been enabled
then any symbol tables in linked debug info files will be read in and
used when disassembling.
@item --no-addresses
When disassembling, don't print addresses on each line or for symbols
and relocation offsets.
@item --prefix-addresses
When disassembling, print the complete address on each line. This is
the older disassembly format.

View File

@ -93,6 +93,7 @@ static int dump_dynamic_reloc_info; /* -R */
static int dump_ar_hdrs; /* -a */
static int dump_private_headers; /* -p */
static char *dump_private_options; /* -P */
static int no_addresses; /* --no-addresses */
static int prefix_addresses; /* --prefix-addresses */
static int with_line_numbers; /* -l */
static bfd_boolean with_source_code; /* -S */
@ -270,6 +271,7 @@ usage (FILE *stream, int status)
-z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
--start-address=ADDR Only process data whose address is >= ADDR\n\
--stop-address=ADDR Only process data whose address is < ADDR\n\
--no-addresses Do not print address alongside disassembly\n\
--prefix-addresses Print complete address alongside disassembly\n\
--[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
--insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
@ -358,6 +360,7 @@ static struct option long_options[]=
{"info", no_argument, NULL, 'i'},
{"line-numbers", no_argument, NULL, 'l'},
{"no-show-raw-insn", no_argument, &show_raw_insn, -1},
{"no-addresses", no_argument, &no_addresses, 1},
{"prefix-addresses", no_argument, &prefix_addresses, 1},
{"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
{"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
@ -1303,13 +1306,17 @@ objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
bfd_vma vma, struct disassemble_info *inf,
bfd_boolean skip_zeroes)
{
objdump_print_value (vma, inf, skip_zeroes);
if (!no_addresses)
{
objdump_print_value (vma, inf, skip_zeroes);
(*inf->fprintf_func) (inf->stream, " ");
}
if (sym == NULL)
{
bfd_vma secaddr;
(*inf->fprintf_func) (inf->stream, " <%s",
(*inf->fprintf_func) (inf->stream, "<%s",
sanitize_string (bfd_section_name (sec)));
secaddr = bfd_section_vma (sec);
if (vma < secaddr)
@ -1326,7 +1333,7 @@ objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
}
else
{
(*inf->fprintf_func) (inf->stream, " <");
(*inf->fprintf_func) (inf->stream, "<");
objdump_print_symname (abfd, inf, sym);
@ -1376,8 +1383,11 @@ objdump_print_addr (bfd_vma vma,
if (sorted_symcount < 1)
{
(*inf->fprintf_func) (inf->stream, "0x");
objdump_print_value (vma, inf, skip_zeroes);
if (!no_addresses)
{
(*inf->fprintf_func) (inf->stream, "0x");
objdump_print_value (vma, inf, skip_zeroes);
}
if (display_file_offsets)
inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
@ -2573,7 +2583,7 @@ disassemble_bytes (struct disassemble_info * inf,
zeroes in chunks of 4, ensuring that there is always a leading
zero remaining. */
skip_addr_chars = 0;
if (! prefix_addresses)
if (!no_addresses && !prefix_addresses)
{
char buf[30];
@ -2669,7 +2679,9 @@ disassemble_bytes (struct disassemble_info * inf,
if (with_line_numbers || with_source_code)
show_line (aux->abfd, section, addr_offset);
if (! prefix_addresses)
if (no_addresses)
printf ("\t");
else if (!prefix_addresses)
{
char *s;
@ -2875,12 +2887,17 @@ disassemble_bytes (struct disassemble_info * inf,
putchar ('\n');
j = addr_offset * opb + pb;
bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
for (s = buf + skip_addr_chars; *s == '0'; s++)
*s = ' ';
if (*s == '\0')
*--s = '0';
printf ("%s:\t", buf + skip_addr_chars);
if (no_addresses)
printf ("\t");
else
{
bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
for (s = buf + skip_addr_chars; *s == '0'; s++)
*s = ' ';
if (*s == '\0')
*--s = '0';
printf ("%s:\t", buf + skip_addr_chars);
}
print_jump_visualisation (section->vma + j / opb,
max_level, line_buffer,
@ -2932,15 +2949,19 @@ disassemble_bytes (struct disassemble_info * inf,
else
printf ("\t\t\t");
objdump_print_value (section->vma - rel_offset + q->address,
inf, TRUE);
if (!no_addresses)
{
objdump_print_value (section->vma - rel_offset + q->address,
inf, TRUE);
printf (": ");
}
if (q->howto == NULL)
printf (": *unknown*\t");
printf ("*unknown*\t");
else if (q->howto->name)
printf (": %s\t", q->howto->name);
printf ("%s\t", q->howto->name);
else
printf (": %d\t", q->howto->type);
printf ("%d\t", q->howto->type);
if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
printf ("*unknown*");