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Add -M command line switch to objdump - text of switch is passed on to disassembler

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Add support for register name set selection ot ARM disassembler.
This commit is contained in:
Nick Clifton 1999-06-16 02:24:36 +00:00
parent 5ba624b0f4
commit dd92f63977
9 changed files with 145 additions and 6 deletions
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14
binutils/ChangeLog
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@ -1,3 +1,17 @@
1999-06-14 Nick Clifton <nickc@cygnus.com>
* objdump.c (disassembler_options): New variable.
(usage): Document new -M/--disassembler-options option.
(long_options): Add --disassembler-options.
(disassemble_data): Initialise disassembler_options field of
disassembler_info structure.
(main): Add parsing of -M option.
* binutils.texi: Document new command line switch to objdump.
* NEWS: Describe new command line switch to objdump.
Mon Jun 14 10:27:54 1999 Andreas Schwab <schwab@issan.cs.uni-dortmund.de>
* binutils.texi: Fix typos.

5
binutils/NEWS
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@ -2,6 +2,11 @@
Changes in binutils 2.10:
* New command line switch to objdump -M (or --disassembler-options) which takes
a parameter which can then be interpreted on a per-target basis by the
disassembler. Used by ARM targets to select register name sets, ISA, APCS or
raw verions.
* objdump support for -mi386:intel which causes disassembly to be displayed
with intel syntax.

16
binutils/binutils.texi
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@ -1137,6 +1137,7 @@ objdump [ -a | --archive-headers ]
[ -j @var{section} | --section=@var{section} ]
[ -l | --line-numbers ] [ -S | --source ]
[ -m @var{machine} | --architecture=@var{machine} ]
[ -M @var{options} | --disassembler-options=@var{options}]
[ -p | --private-headers ]
[ -r | --reloc ] [ -R | --dynamic-reloc ]
[ -s | --full-contents ] [ --stabs ]
@ -1295,6 +1296,21 @@ can be useful when disassembling object files which do not describe
architecture information, such as S-records. You can list the available
architectures with the @samp{-i} option.
@item -M @var{options}
@itemx --disassembler-options=@var{options}
Pass target specific information to the disassembler. Only supported on
some targets.
If the target is an ARM architecture then this switch can be used to
select which register name set is used during disassembler. Specifying
@samp{--disassembler-options=reg-name-std} (the default) will select the
register names as used in ARM's instruction set documentation, but with
register 13 called 'sp', register 14 called 'lr' and register 15 called
'pc'. Specifying @samp{--disassembler-options=reg-names-apcs} will
select the name set used by the ARM Procedure Call Standard, whilst
specifying @samp{--disassembler-options=reg-names-raw} will just use
@samp{r} followed by the register number.
@item -p
@itemx --private-headers
Print information that is specific to the object file format. The exact

14
binutils/objdump.c
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@ -83,6 +83,9 @@ struct objdump_disasm_info {
/* Architecture to disassemble for, or default if NULL. */
static char *machine = (char *) NULL;
/* Target specific options to the disassembler. */
static char *disassembler_options = (char *) NULL;
/* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
@ -217,7 +220,8 @@ usage (stream, status)
int status;
{
fprintf (stream, _("\
Usage: %s [-ahifCdDprRtTxsSlw] [-b bfdname] [-m machine] [-j section-name]\n\
Usage: %s [-ahifCdDprRtTxsSlw] [-b bfdname] [-m machine] \n\
[-j section-name] [-M disassembler-options]\n\
[--archive-headers] [--target=bfdname] [--debugging] [--disassemble]\n\
[--disassemble-all] [--disassemble-zeroes] [--file-headers]\n\
[--section-headers] [--headers]\n\
@ -255,6 +259,7 @@ static struct option long_options[]=
{"demangle", no_argument, &do_demangle, 1},
{"disassemble", no_argument, NULL, 'd'},
{"disassemble-all", no_argument, NULL, 'D'},
{"disassembler-options", required_argument, NULL, 'M'},
{"disassemble-zeroes", no_argument, &disassemble_zeroes, 1},
{"dynamic-reloc", no_argument, NULL, 'R'},
{"dynamic-syms", no_argument, NULL, 'T'},
@ -1564,6 +1569,8 @@ disassemble_data (abfd)
disasm_info.flavour = bfd_get_flavour (abfd);
disasm_info.arch = bfd_get_arch (abfd);
disasm_info.mach = bfd_get_mach (abfd);
disasm_info.disassembler_options = disassembler_options;
if (bfd_big_endian (abfd))
disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
else if (bfd_little_endian (abfd))
@ -2694,7 +2701,7 @@ main (argc, argv)
bfd_init ();
set_default_bfd_target ();
while ((c = getopt_long (argc, argv, "pib:m:VCdDlfahrRtTxsSj:wE:",
while ((c = getopt_long (argc, argv, "pib:m:M:VCdDlfahrRtTxsSj:wE:",
long_options, (int *) 0))
!= EOF)
{
@ -2707,6 +2714,9 @@ main (argc, argv)
case 'm':
machine = optarg;
break;
case 'M':
disassembler_options = optarg;
break;
case 'j':
only = optarg;
break;

5
include/ChangeLog
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@ -1,3 +1,8 @@
1999-06-14 Nick Clifton <nickc@cygnus.com>
* dis-asm.h (arm_toggle_regnames): New prototype.
(struct diassemble_info): New field: disassembler_options.
1999-04-11 Richard Henderson <rth@cygnus.com>
* bfdlink.h (bfd_elf_version_expr): Rename `match' to `pattern'.

5
include/dis-asm.h
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@ -133,6 +133,9 @@ typedef struct disassemble_info {
zero if unknown. */
bfd_vma target2; /* Second target address for dref2 */
/* Command line options specific to the target disassembler. */
char * disassembler_options;
} disassemble_info;
@ -181,6 +184,8 @@ extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
extern int print_insn_vax PARAMS ((bfd_vma, disassemble_info*));
extern int print_insn_tic80 PARAMS ((bfd_vma, disassemble_info*));
extern int arm_toggle_regnames PARAMS ((void));
/* Fetch the disassembler for a given BFD, if that support is available. */
extern disassembler_ftype disassembler PARAMS ((bfd *));

19
opcodes/ChangeLog
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@ -1,3 +1,22 @@
1999-06-14 Nick Clifton <nickc@cygnus.com> & Drew Mosley <dmoseley@cygnus.com>
* arm-dis.c (arm_regnames): Turn into a pointer to a register
name set.
(arm_regnames_standard): New variable: Array of ARM register
names according to ARM instruction set nomenclature.
(arm_regnames_apcs): New variable: Array of ARM register names
according to ARM Procedure Call Standard.
(arm_regnames_raw): New variable: Array of ARM register names
using just 'r' and the register number.
(arm_toggle_regnames): New function: Toggle the chosen register set
naming scheme.
(parse_disassembler_options): New function: Parse any target
disassembler command line options.
(print_insn_big_arm): Call parse_disassembler_options if any
are defined.
(print_insn_little_arm): Call parse_disassembler_options if any
are defined.
1999-06-13 Ian Lance Taylor <ian@zembu.com>
* i386-dis.c (FWAIT_OPCODE): Define.

72
opcodes/arm-dis.c
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@ -1,5 +1,5 @@
/* Instruction printing code for the ARM
Copyright (C) 1994, 95, 96, 97, 1998 Free Software Foundation, Inc.
Copyright (C) 1994, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
Modification by James G. Smith (jsmith@cygnus.co.uk)
@ -35,9 +35,20 @@ static char *arm_conditional[] =
{"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc",
"hi", "ls", "ge", "lt", "gt", "le", "", "nv"};
static char *arm_regnames[] =
static char *arm_regnames_raw[] =
{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc"};
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"};
static char *arm_regnames_standard[] =
{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc"};
static char *arm_regnames_apcs[] =
{"a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4",
"v5", "v6", "sl", "fp", "ip", "sp", "lr", "pc"};
/* Choose which register name set to use. */
static char **arm_regnames = arm_regnames_standard;
static char *arm_fp_const[] =
{"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"};
@ -742,6 +753,45 @@ print_insn_thumb (pc, info, given)
abort ();
}
/* Select a different register name set.
Returns true if the name set selected is the APCS name set. */
int
arm_toggle_regnames ()
{
if (arm_regnames == arm_regnames_standard)
arm_regnames = arm_regnames_apcs;
else
arm_regnames = arm_regnames_standard;
return arm_regnames == arm_regnames_apcs;
}
static void
parse_disassembler_options (options)
char * options;
{
if (options == NULL)
return;
if (strncmp (options, "reg-names-", 10) == 0)
{
options += 10;
if (strcmp (options, "std") == 0)
arm_regnames = arm_regnames_standard;
else if (strcmp (options, "apcs") == 0)
arm_regnames = arm_regnames_apcs;
else if (strcmp (options, "raw") == 0)
arm_regnames = arm_regnames_raw;
else
fprintf (stderr, "Unrecognised register name set: %s\n", options);
}
else
fprintf (stderr, "Unrecognised disassembler option: %s\n", options);
return;
}
/* NOTE: There are no checks in these routines that the relevant number of data bytes exist */
int
@ -756,6 +806,14 @@ print_insn_big_arm (pc, info)
elf_symbol_type *es;
int is_thumb;
if (info->disassembler_options)
{
parse_disassembler_options (info->disassembler_options);
/* To avoid repeated parsing of this option, we remove it here. */
info->disassembler_options = NULL;
}
is_thumb = false;
if (info->symbols != NULL)
{
@ -838,6 +896,14 @@ print_insn_little_arm (pc, info)
elf_symbol_type *es;
int is_thumb;
if (info->disassembler_options)
{
parse_disassembler_options (info->disassembler_options);
/* To avoid repeated parsing of this option, we remove it here. */
info->disassembler_options = NULL;
}
is_thumb = false;
if (info->symbols != NULL)
{

1
opcodes/disassemble.c
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@ -245,4 +245,3 @@ disassembler (abfd)
}
return disassemble;
}