objdump --no-addresses
Michael Matz
matz@suse.de
Wed Apr 15 16:14:41 GMT 2020
Hello,
On Wed, 15 Apr 2020, Alan Modra via Binutils wrote:
> 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.
Over the years I must have written equivalent ad-hoc sed or awk cmdlines
on-demand a million times (on machines where my other dozen scripts for
that were inconvenient to access). So: Thank You! ;)
(and yeah about mentioning --no-show-raw-insn in the docu)
Ciao,
Michael.
>
> * 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.
>
> diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi
> index de3f1babb2..b78154a8ef 100644
> --- a/binutils/doc/binutils.texi
> +++ b/binutils/doc/binutils.texi
> @@ -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.
> diff --git a/binutils/objdump.c b/binutils/objdump.c
> index 81c0b4f3d0..1d9afec992 100644
> --- a/binutils/objdump.c
> +++ b/binutils/objdump.c
> @@ -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*");
>
>
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