Add detection of IMB and IMBRange SWIs.

This commit is contained in:
Nick Clifton 1999-06-16 02:58:52 +00:00
parent dd92f63977
commit 5876e06d81
2 changed files with 87 additions and 79 deletions

View file

@ -1,3 +1,8 @@
1999-06-16 Nick Clifton <nickc@cygnus.com>
* arm-dis.c (print_insn_arm): Add detection of IMB and IMBRange
SWIs.
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

View file

@ -31,47 +31,49 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "elf/internal.h"
#include "elf/arm.h"
static char *arm_conditional[] =
static char * arm_conditional[] =
{"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc",
"hi", "ls", "ge", "lt", "gt", "le", "", "nv"};
static char *arm_regnames_raw[] =
static char * arm_regnames_raw[] =
{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"};
static char *arm_regnames_standard[] =
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[] =
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_regnames = arm_regnames_standard;
static char *arm_fp_const[] =
static char * arm_fp_const[] =
{"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"};
static char *arm_shift[] =
static char * arm_shift[] =
{"lsl", "lsr", "asr", "ror"};
static int print_insn_arm PARAMS ((bfd_vma, struct disassemble_info *,
long));
static int print_insn_arm
PARAMS ((bfd_vma, struct disassemble_info *, long));
static void
arm_decode_shift (given, func, stream)
long given;
fprintf_ftype func;
void *stream;
void * stream;
{
func (stream, "%s", arm_regnames[given & 0xf]);
if ((given & 0xff0) != 0)
{
if ((given & 0x10) == 0)
{
int amount = (given & 0xf80) >> 7;
int shift = (given & 0x60) >> 5;
if (amount == 0)
{
if (shift == 3)
@ -79,8 +81,10 @@ arm_decode_shift (given, func, stream)
func (stream, ", rrx");
return;
}
amount = 32;
}
func (stream, ", %s #%d", arm_shift[shift], amount);
}
else
@ -94,9 +98,9 @@ arm_decode_shift (given, func, stream)
static int
print_insn_arm (pc, info, given)
bfd_vma pc;
struct disassemble_info *info;
long given;
bfd_vma pc;
struct disassemble_info * info;
long given;
{
struct arm_opcode * insn;
void * stream = info->stream;
@ -478,6 +482,12 @@ print_insn_arm (pc, info, given)
reg = given >> bitstart;
reg &= (2 << (bitend - bitstart)) - 1;
func (stream, "0x%08x", reg);
/* Some SWI instructions have special meanings. */
if ((given & 0x0fffffff) == 0x0FF00000)
func (stream, "\t; IMB");
else if ((given & 0x0fffffff) == 0x0FF00001)
func (stream, "\t; IMBRange");
}
break;
case 'f':
@ -537,19 +547,19 @@ print_insn_arm (pc, info, given)
static int
print_insn_thumb (pc, info, given)
bfd_vma pc;
struct disassemble_info *info;
long given;
bfd_vma pc;
struct disassemble_info * info;
long given;
{
struct thumb_opcode *insn;
void *stream = info->stream;
fprintf_ftype func = info->fprintf_func;
struct thumb_opcode * insn;
void * stream = info->stream;
fprintf_ftype func = info->fprintf_func;
for (insn = thumb_opcodes; insn->assembler; insn++)
{
if ((given & insn->mask) == insn->value)
{
char *c = insn->assembler;
char * c = insn->assembler;
/* Special processing for Thumb 2 instruction BL sequence: */
if (!*c) /* check for empty (not NULL) assembler string */
@ -569,12 +579,14 @@ print_insn_thumb (pc, info, given)
given &= 0xffff;
func (stream, "%04x\t", given);
for (; *c; c++)
{
if (*c == '%')
{
int domaskpc = 0;
int domasklr = 0;
switch (*++c)
{
case '%':
@ -594,6 +606,7 @@ print_insn_thumb (pc, info, given)
case 'D':
{
long reg;
reg = given & 0x7;
if (given & (1 << 7))
reg += 8;
@ -618,6 +631,7 @@ print_insn_thumb (pc, info, given)
{
int started = 0;
int reg;
func (stream, "{");
/* It would be nice if we could spot
ranges, and generate the rS-rE format: */
@ -655,6 +669,7 @@ print_insn_thumb (pc, info, given)
{
int bitstart = *c++ - '0';
int bitend = 0;
while (*c >= '0' && *c <= '9')
bitstart = (bitstart * 10) + *c++ - '0';
@ -663,6 +678,7 @@ print_insn_thumb (pc, info, given)
case '-':
{
long reg;
c++;
while (*c >= '0' && *c <= '9')
bitend = (bitend * 10) + *c++ - '0';
@ -712,7 +728,7 @@ print_insn_thumb (pc, info, given)
break;
default:
abort();
abort ();
}
}
break;
@ -732,7 +748,7 @@ print_insn_thumb (pc, info, given)
break;
default:
abort();
abort ();
}
}
break;
@ -797,13 +813,13 @@ parse_disassembler_options (options)
int
print_insn_big_arm (pc, info)
bfd_vma pc;
struct disassemble_info *info;
struct disassemble_info * info;
{
unsigned char b[4];
long given;
int status;
coff_symbol_type *cs;
elf_symbol_type *es;
coff_symbol_type * cs;
elf_symbol_type * es;
int is_thumb;
if (info->disassembler_options)
@ -817,23 +833,22 @@ print_insn_big_arm (pc, info)
is_thumb = false;
if (info->symbols != NULL)
{
if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
{
cs = coffsymbol (*info->symbols);
is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT
|| cs->native->u.syment.n_sclass == C_THUMBSTAT
|| cs->native->u.syment.n_sclass == C_THUMBLABEL
|| cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
|| cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
}
else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
{
es = *(elf_symbol_type **)(info->symbols);
is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
STT_ARM_TFUNC;
}
}
if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
{
cs = coffsymbol (*info->symbols);
is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT
|| cs->native->u.syment.n_sclass == C_THUMBSTAT
|| cs->native->u.syment.n_sclass == C_THUMBLABEL
|| cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
|| cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
}
else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
{
es = *(elf_symbol_type **)(info->symbols);
is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
STT_ARM_TFUNC;
}
}
info->bytes_per_chunk = 4;
info->display_endian = BFD_ENDIAN_BIG;
@ -863,23 +878,15 @@ print_insn_big_arm (pc, info)
given |= (b[0] << 24) | (b[1] << 16);
}
else
{
given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16);
}
given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16);
}
else
{
given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]);
}
given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]);
if (is_thumb)
{
status = print_insn_thumb (pc, info, given);
}
status = print_insn_thumb (pc, info, given);
else
{
status = print_insn_arm (pc, info, given);
}
status = print_insn_arm (pc, info, given);
return status;
}
@ -892,8 +899,8 @@ print_insn_little_arm (pc, info)
unsigned char b[4];
long given;
int status;
coff_symbol_type *cs;
elf_symbol_type *es;
coff_symbol_type * cs;
elf_symbol_type * es;
int is_thumb;
if (info->disassembler_options)
@ -905,26 +912,26 @@ print_insn_little_arm (pc, info)
}
is_thumb = false;
if (info->symbols != NULL)
{
if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
{
cs = coffsymbol (*info->symbols);
is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT
|| cs->native->u.syment.n_sclass == C_THUMBSTAT
|| cs->native->u.syment.n_sclass == C_THUMBLABEL
|| cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
|| cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
{
cs = coffsymbol (*info->symbols);
is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT
|| cs->native->u.syment.n_sclass == C_THUMBSTAT
|| cs->native->u.syment.n_sclass == C_THUMBLABEL
|| cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
|| cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
}
else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
{
es = *(elf_symbol_type **)(info->symbols);
is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
STT_ARM_TFUNC;
}
}
}
else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
{
es = *(elf_symbol_type **)(info->symbols);
is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
STT_ARM_TFUNC;
}
}
info->bytes_per_chunk = 4;
info->display_endian = BFD_ENDIAN_LITTLE;
@ -945,13 +952,9 @@ print_insn_little_arm (pc, info)
given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24);
if (is_thumb)
{
status = print_insn_thumb (pc, info, given);
}
status = print_insn_thumb (pc, info, given);
else
{
status = print_insn_arm (pc, info, given);
}
status = print_insn_arm (pc, info, given);
return status;
}