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authorIan Lance Taylor <ian@airs.com>1994-09-16 01:59:30 +0000
committerIan Lance Taylor <ian@airs.com>1994-09-16 01:59:30 +0000
commitd5464baad0bdb3e00c15f33090d6bb9fff1fc209 (patch)
tree831ce618ff34550e92c1808c8d9bd1e27814d75b
parente36830425e70e585c2071128b17cc49976f4d1a8 (diff)
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* objdump.c (disassemble_all): New global variable.
(usage): Document --disassemble-all. (long_options): Add disassemble-all as a synonym for -D. (compare_symbols): Make pointers const. (compare_relocs): New static function. (disassemble_data): Rename disassemble to disassemble_fn to avoid shadowing. If dump_reloc_info, print relocs along with disassembly. Skip sections which are not SEC_CODE unless disassemble_all or only is set. (display_bfd): Don't call dump_relocs if disassemble is set. (main): Accept and handle -D. * binutils.texi: Document -D/--disassemble-all. * objdump.1: Likewise. PR 5059.
-rw-r--r--binutils/ChangeLog16
-rw-r--r--binutils/binutils.texi19
-rw-r--r--binutils/objdump.116
-rw-r--r--binutils/objdump.c184
4 files changed, 204 insertions, 31 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 35cca2c..31cd977 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,19 @@
+Thu Sep 15 21:43:17 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
+
+ * objdump.c (disassemble_all): New global variable.
+ (usage): Document --disassemble-all.
+ (long_options): Add disassemble-all as a synonym for -D.
+ (compare_symbols): Make pointers const.
+ (compare_relocs): New static function.
+ (disassemble_data): Rename disassemble to disassemble_fn to avoid
+ shadowing. If dump_reloc_info, print relocs along with
+ disassembly. Skip sections which are not SEC_CODE unless
+ disassemble_all or only is set.
+ (display_bfd): Don't call dump_relocs if disassemble is set.
+ (main): Accept and handle -D.
+ * binutils.texi: Document -D/--disassemble-all.
+ * objdump.1: Likewise.
+
Wed Sep 14 12:19:07 1994 Ian Lance Taylor (ian@sanguine.cygnus.com)
* objdump.c (disassemble_data): Initialize prevline to 0. Make
diff --git a/binutils/binutils.texi b/binutils/binutils.texi
index 4dc1dde..4acc69d 100644
--- a/binutils/binutils.texi
+++ b/binutils/binutils.texi
@@ -849,7 +849,8 @@ Show a summary of the options to @code{objcopy}.
@smallexample
objdump [ -a | --archive-headers ]
[ -b @var{bfdname} | --target=@var{bfdname} ]
- [ -d | --disassemble ] [ -f | --file-headers ]
+ [ -d | --disassemble ] [ -D | --disassemble-all ]
+ [ -f | --file-headers ]
[ -h | --section-headers | --headers ] [ -i | --info ]
[ -j @var{section} | --section=@var{section} ]
[ -l | --line-numbers ]
@@ -904,8 +905,14 @@ formats available with the @samp{-i} option.
@itemx --disassemble
@cindex disassembling object code
@cindex machine instructions
-Display the assembler mnemonics for the machine
-instructions from @var{objfile}.
+Display the assembler mnemonics for the machine instructions from
+@var{objfile}. This option only disassembles those sections which are
+expected to contain instructions.
+
+@item -D
+@itemx --disassemble-all
+Like @samp{-d}, but disassemble the contents of all sections, not just
+those expected to contain instructions.
@item -f
@itemx --file-header
@@ -949,7 +956,7 @@ Display information only for section @var{name}.
@cindex source filenames for object files
Label the display (using debugging information) with the filename
and source line numbers corresponding to the object code shown.
-Only useful with @samp{-d}.
+Only useful with @samp{-d} or @samp{-D}.
@item -m @var{machine}
@itemx --architecture=@var{machine}
@@ -961,7 +968,9 @@ option.
@item -r
@itemx --reloc
@cindex relocation entries, in object file
-Print the relocation entries of the file.
+Print the relocation entries of the file. If used with @samp{-d} or
+@samp{-D}, the relocations are printed interspersed with the
+disassembly.
@item -R
@itemx --dynamic-reloc
diff --git a/binutils/objdump.1 b/binutils/objdump.1
index 4050c4b..4a9da61 100644
--- a/binutils/objdump.1
+++ b/binutils/objdump.1
@@ -22,6 +22,7 @@ objdump \- display information from object files.
.I bfdname\c
\&\|]
.RB "[\|" \-d | \-\-disassemble "\|]"
+.RB "[\|" \-D | \-\-disassemble-all "\|]"
.RB "[\|" \-f | \-\-file\-headers "\|]"
.RB "[\|" \-h | \-\-section\-headers
.RB "| " \-\-headers "\|]"
@@ -127,6 +128,15 @@ Display the assembler mnemonics for the machine
instructions from \c
.I objfile\c
\&.
+This option only disassembles those sections which are
+expected to contain instructions.
+
+.TP
+.B \-D
+.TP
+.B \-\-disassemble-all
+Like \fB\-d\fP, but disassemble the contents of all sections, not just
+those expected to contain instructions.
.TP
.B \-f
@@ -178,7 +188,7 @@ Display information only for section \c
.B \-\-line\-numbers
Label the display (using debugging information) with the filename
and source line numbers corresponding to the object code shown.
-Only useful with \fB\-d\fP.
+Only useful with \fB\-d\fP or \fB\-D\fP.
.TP
.BI "\-m " "machine"\c
@@ -199,7 +209,9 @@ option.
.B \-r
.TP
.B \-\-reloc
-Print the relocation entries of the file.
+Print the relocation entries of the file. If used with \fB\-d\fP or
+\fB\-d\fP, the relocations are printed interspersed with the
+disassembly.
.TP
.B \-R
diff --git a/binutils/objdump.c b/binutils/objdump.c
index b158c53..e531f20 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -50,6 +50,7 @@ int dump_ar_hdrs; /* -a */
int with_line_numbers; /* -l */
int dump_stab_section_info; /* --stabs */
boolean disassemble; /* -d */
+boolean disassemble_all; /* -D */
boolean formats_info; /* -i */
char *only; /* -j secname */
@@ -106,11 +107,12 @@ usage (stream, status)
int status;
{
fprintf (stream, "\
-Usage: %s [-ahifdrRtTxsl] [-b bfdname] [-m machine] [-j section-name]\n\
- [--archive-headers] [--target=bfdname] [--disassemble] [--file-headers]\n\
- [--section-headers] [--headers] [--info] [--section=section-name]\n\
- [--line-numbers] [--architecture=machine] [--reloc] [--full-contents]\n\
- [--stabs] [--syms] [--all-headers] [--dynamic-syms] [--dynamic-reloc]\n\
+Usage: %s [-ahifdDrRtTxsl] [-b bfdname] [-m machine] [-j section-name]\n\
+ [--archive-headers] [--target=bfdname] [--disassemble]\n\
+ [--disassemble-all] [--file-headers] [--section-headers] [--headers]\n\
+ [--info] [--section=section-name] [--line-numbers]\n\
+ [--architecture=machine] [--reloc] [--full-contents] [--stabs]\n\
+ [--syms] [--all-headers] [--dynamic-syms] [--dynamic-reloc]\n\
[--version] [--help] objfile...\n\
at least one option besides -l (--line-numbers) must be given\n",
program_name);
@@ -123,6 +125,7 @@ static struct option long_options[]=
{"architecture", required_argument, NULL, 'm'},
{"archive-headers", no_argument, NULL, 'a'},
{"disassemble", no_argument, NULL, 'd'},
+ {"disassemble-all", no_argument, NULL, 'D'},
{"dynamic-reloc", no_argument, NULL, 'R'},
{"dynamic-syms", no_argument, NULL, 'T'},
{"file-headers", no_argument, NULL, 'f'},
@@ -285,11 +288,11 @@ remove_useless_symbols (symbols, count)
static int
compare_symbols (ap, bp)
- PTR ap;
- PTR bp;
+ const PTR ap;
+ const PTR bp;
{
- asymbol *a = *(asymbol **)ap;
- asymbol *b = *(asymbol **)bp;
+ const asymbol *a = *(const asymbol **)ap;
+ const asymbol *b = *(const asymbol **)bp;
if (a->value > b->value)
return 1;
@@ -303,6 +306,25 @@ compare_symbols (ap, bp)
return 0;
}
+/* Sort relocs into address order. */
+
+static int
+compare_relocs (ap, bp)
+ const PTR ap;
+ const PTR bp;
+{
+ const arelent *a = *(const arelent **)ap;
+ const arelent *b = *(const arelent **)bp;
+
+ if (a->address > b->address)
+ return 1;
+ else if (a->address < b->address)
+ return -1;
+
+ return compare_symbols ((const PTR) a->sym_ptr_ptr,
+ (const PTR) b->sym_ptr_ptr);
+}
+
/* Print VMA symbolically to INFO if possible. */
static void
@@ -447,7 +469,7 @@ disassemble_data (abfd)
{
long i;
unsigned int (*print) () = 0; /* Old style */
- disassembler_ftype disassemble = 0; /* New style */
+ disassembler_ftype disassemble_fn = 0; /* New style */
struct disassemble_info disasm_info;
struct objdump_disasm_info aux;
@@ -458,6 +480,51 @@ disassemble_data (abfd)
boolean done_dot = false;
+ /* If we are dumping relocation information, read the relocs for
+ each section we are going to disassemble. We must do this before
+ we sort the symbols. */
+ if (dump_reloc_info)
+ {
+ for (section = abfd->sections;
+ section != (asection *) NULL;
+ section = section->next)
+ {
+ long relsize;
+ arelent **relpp;
+
+ if ((section->flags & SEC_LOAD) == 0
+ || (! disassemble_all
+ && only == NULL
+ && (section->flags & SEC_CODE) == 0))
+ continue;
+ if (only != (char *) NULL && strcmp (only, section->name) != 0)
+ continue;
+ if ((section->flags & SEC_RELOC) == 0)
+ continue;
+
+ /* We store the reloc information in the reloc_count and
+ orelocation fields. */
+
+ relsize = bfd_get_reloc_upper_bound (abfd, section);
+ if (relsize < 0)
+ bfd_fatal (bfd_get_filename (abfd));
+
+ if (relsize == 0)
+ section->reloc_count = 0;
+ else
+ {
+ long relcount;
+
+ relpp = (arelent **) xmalloc (relsize);
+ relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
+ if (relcount < 0)
+ bfd_fatal (bfd_get_filename (abfd));
+ section->reloc_count = relcount;
+ section->orelocation = relpp;
+ }
+ }
+ }
+
/* Replace symbol section relative values with abs values. */
for (i = 0; i < symcount; i++)
{
@@ -495,8 +562,8 @@ disassemble_data (abfd)
}
else
{
- disassemble = disassembler (abfd);
- if (!disassemble)
+ disassemble_fn = disassembler (abfd);
+ if (!disassemble_fn)
{
fprintf (stderr, "%s: Can't disassemble for architecture %s\n",
program_name,
@@ -511,12 +578,27 @@ disassemble_data (abfd)
{
bfd_byte *data = NULL;
bfd_size_type datasize = 0;
+ arelent **relpp = NULL;
+ arelent **relppend = NULL;
- if (!(section->flags & SEC_LOAD))
+ if ((section->flags & SEC_LOAD) == 0
+ || (! disassemble_all
+ && only == NULL
+ && (section->flags & SEC_CODE) == 0))
continue;
if (only != (char *) NULL && strcmp (only, section->name) != 0)
continue;
+ if (dump_reloc_info
+ && (section->flags & SEC_RELOC) != 0)
+ {
+ /* Sort the relocs by address. */
+ qsort (section->orelocation, section->reloc_count,
+ sizeof (arelent *), compare_relocs);
+ relpp = section->orelocation;
+ relppend = relpp + section->reloc_count;
+ }
+
printf ("Disassembly of section %s:\n", section->name);
datasize = bfd_get_section_size_before_reloc (section);
@@ -534,6 +616,8 @@ disassemble_data (abfd)
i = 0;
while (i < disasm_info.buffer_length)
{
+ int bytes;
+
if (data[i] == 0 && data[i + 1] == 0 && data[i + 2] == 0 &&
data[i + 3] == 0)
{
@@ -542,7 +626,7 @@ disassemble_data (abfd)
printf ("...\n");
done_dot = true;
}
- i += 4;
+ bytes = 4;
}
else
{
@@ -584,20 +668,69 @@ disassemble_data (abfd)
objdump_print_address (section->vma + i, &disasm_info);
putchar (' ');
- if (disassemble) /* New style */
+ if (disassemble_fn)
{
- int bytes = (*disassemble)(section->vma + i,
- &disasm_info);
+ /* New style */
+ bytes = (*disassemble_fn) (section->vma + i, &disasm_info);
if (bytes < 0)
break;
- i += bytes;
}
- else /* Old style */
- i += print (section->vma + i,
- data + i,
- stdout);
+ else
+ {
+ /* Old style */
+ bytes = print (section->vma + i, data + i, stdout);
+ }
putchar ('\n');
}
+
+ if (dump_reloc_info
+ && (section->flags & SEC_RELOC) != 0)
+ {
+ while (relpp < relppend
+ && ((*relpp)->address >= i
+ && (*relpp)->address < i + bytes))
+ {
+ arelent *q;
+ const char *sym_name;
+
+ q = *relpp;
+
+ printf ("\t\tRELOC: ");
+
+ printf_vma (section->vma + q->address);
+
+ printf (" %s ", q->howto->name);
+
+ if (q->sym_ptr_ptr != NULL
+ && *q->sym_ptr_ptr != NULL)
+ {
+ sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
+ if (sym_name == NULL || *sym_name == '\0')
+ {
+ asection *sym_sec;
+
+ sym_sec = bfd_get_section (*q->sym_ptr_ptr);
+ sym_name = bfd_get_section_name (abfd, sym_sec);
+ if (sym_name == NULL || *sym_name == '\0')
+ sym_name = "*unknown*";
+ }
+ }
+
+ printf ("%s", sym_name);
+
+ if (q->addend)
+ {
+ printf ("+0x");
+ printf_vma (q->addend);
+ }
+
+ printf ("\n");
+
+ ++relpp;
+ }
+ }
+
+ i += bytes;
}
free (data);
}
@@ -868,7 +1001,7 @@ display_bfd (abfd)
dump_symbols (abfd, true);
if (dump_stab_section_info)
dump_stabs (abfd);
- if (dump_reloc_info)
+ if (dump_reloc_info && ! disassemble)
dump_relocs (abfd);
if (dump_dynamic_reloc_info)
dump_dynamic_relocs (abfd);
@@ -1371,7 +1504,7 @@ main (argc, argv)
bfd_init ();
- while ((c = getopt_long (argc, argv, "ib:m:VdlfahrRtTxsj:", long_options,
+ while ((c = getopt_long (argc, argv, "ib:m:VdDlfahrRtTxsj:", long_options,
(int *) 0))
!= EOF)
{
@@ -1414,6 +1547,9 @@ main (argc, argv)
case 'd':
disassemble = true;
break;
+ case 'D':
+ disassemble = disassemble_all = true;
+ break;
case 's':
dump_section_contents = 1;
break;