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fuchsia / third_party / gdb / e071ed6494db51dbb36f9f33513dd59442406e17 / . / opcodes / ppc-dis.c
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/* ppc-dis.c -- Disassemble PowerPC instructions
Copyright (C) 1994-2016 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support
This file is part of the GNU opcodes library.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
It is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with this file; see the file COPYING. If not, write to the
Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include <stdio.h>
#include "dis-asm.h"
#include "elf-bfd.h"
#include "elf/ppc.h"
#include "opintl.h"
#include "opcode/ppc.h"
/* This file provides several disassembler functions, all of which use
the disassembler interface defined in dis-asm.h. Several functions
are provided because this file handles disassembly for the PowerPC
in both big and little endian mode and also for the POWER (RS/6000)
chip. */
static int print_insn_powerpc (bfd_vma, struct disassemble_info *, int,
ppc_cpu_t);
struct dis_private
{
/* Stash the result of parsing disassembler_options here. */
ppc_cpu_t dialect;
} private;
#define POWERPC_DIALECT(INFO) \
(((struct dis_private *) ((INFO)->private_data))->dialect)
struct ppc_mopt {
const char *opt;
ppc_cpu_t cpu;
ppc_cpu_t sticky;
};
struct ppc_mopt ppc_opts[] = {
{ "403", PPC_OPCODE_PPC | PPC_OPCODE_403,
0 },
{ "405", PPC_OPCODE_PPC | PPC_OPCODE_403 | PPC_OPCODE_405,
0 },
{ "440", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_440
| PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI),
0 },
{ "464", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_440
| PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI),
0 },
{ "476", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_440
| PPC_OPCODE_476 | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5),
0 },
{ "601", PPC_OPCODE_PPC | PPC_OPCODE_601,
0 },
{ "603", PPC_OPCODE_PPC,
0 },
{ "604", PPC_OPCODE_PPC,
0 },
{ "620", PPC_OPCODE_PPC | PPC_OPCODE_64,
0 },
{ "7400", PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC,
0 },
{ "7410", PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC,
0 },
{ "7450", PPC_OPCODE_PPC | PPC_OPCODE_7450 | PPC_OPCODE_ALTIVEC,
0 },
{ "7455", PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC,
0 },
{ "750cl", PPC_OPCODE_PPC | PPC_OPCODE_750 | PPC_OPCODE_PPCPS
, 0 },
{ "821", PPC_OPCODE_PPC | PPC_OPCODE_860,
0 },
{ "850", PPC_OPCODE_PPC | PPC_OPCODE_860,
0 },
{ "860", PPC_OPCODE_PPC | PPC_OPCODE_860,
0 },
{ "a2", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5 | PPC_OPCODE_CACHELCK | PPC_OPCODE_64
| PPC_OPCODE_A2),
0 },
{ "altivec", PPC_OPCODE_PPC,
PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2 },
{ "any", 0,
PPC_OPCODE_ANY },
{ "booke", PPC_OPCODE_PPC | PPC_OPCODE_BOOKE,
0 },
{ "booke32", PPC_OPCODE_PPC | PPC_OPCODE_BOOKE,
0 },
{ "cell", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_CELL | PPC_OPCODE_ALTIVEC),
0 },
{ "com", PPC_OPCODE_COMMON,
0 },
{ "e200z4", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE| PPC_OPCODE_SPE
| PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500 | PPC_OPCODE_E200Z4),
PPC_OPCODE_VLE },
{ "e300", PPC_OPCODE_PPC | PPC_OPCODE_E300,
0 },
{ "e500", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
| PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500),
0 },
{ "e500mc", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500MC),
0 },
{ "e500mc64", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500MC | PPC_OPCODE_64 | PPC_OPCODE_POWER5
| PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7),
0 },
{ "e5500", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500MC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7),
0 },
{ "e6500", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500MC | PPC_OPCODE_64 | PPC_OPCODE_ALTIVEC
| PPC_OPCODE_ALTIVEC2 | PPC_OPCODE_E6500 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7),
0 },
{ "e500x2", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
| PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500),
0 },
{ "efs", PPC_OPCODE_PPC | PPC_OPCODE_EFS,
0 },
{ "power4", PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4,
0 },
{ "power5", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5),
0 },
{ "power6", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC),
0 },
{ "power7", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX),
0 },
{ "power8", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_HTM
| PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2 | PPC_OPCODE_VSX),
0 },
{ "power9", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9
| PPC_OPCODE_HTM | PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2
| PPC_OPCODE_VSX | PPC_OPCODE_VSX3 ),
0 },
{ "ppc", PPC_OPCODE_PPC,
0 },
{ "ppc32", PPC_OPCODE_PPC,
0 },
{ "ppc64", PPC_OPCODE_PPC | PPC_OPCODE_64,
0 },
{ "ppc64bridge", PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE,
0 },
{ "ppcps", PPC_OPCODE_PPC | PPC_OPCODE_PPCPS,
0 },
{ "pwr", PPC_OPCODE_POWER,
0 },
{ "pwr2", PPC_OPCODE_POWER | PPC_OPCODE_POWER2,
0 },
{ "pwr4", PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4,
0 },
{ "pwr5", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5),
0 },
{ "pwr5x", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5),
0 },
{ "pwr6", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
| PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC),
0 },
{ "pwr7", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX),
0 },
{ "pwr8", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_HTM
| PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2 | PPC_OPCODE_VSX),
0 },
{ "pwr9", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9
| PPC_OPCODE_HTM | PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2
| PPC_OPCODE_VSX | PPC_OPCODE_VSX3 ),
0 },
{ "pwrx", PPC_OPCODE_POWER | PPC_OPCODE_POWER2,
0 },
{ "spe", PPC_OPCODE_PPC | PPC_OPCODE_EFS,
PPC_OPCODE_SPE },
{ "titan", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_PMR
| PPC_OPCODE_RFMCI | PPC_OPCODE_TITAN),
0 },
{ "vle", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE| PPC_OPCODE_SPE
| PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
| PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
| PPC_OPCODE_E500),
PPC_OPCODE_VLE },
{ "vsx", PPC_OPCODE_PPC,
PPC_OPCODE_VSX | PPC_OPCODE_VSX3 },
{ "htm", PPC_OPCODE_PPC,
PPC_OPCODE_HTM },
};
/* Switch between Booke and VLE dialects for interlinked dumps. */
static ppc_cpu_t
get_powerpc_dialect (struct disassemble_info *info)
{
ppc_cpu_t dialect = 0;
dialect = POWERPC_DIALECT (info);
/* Disassemble according to the section headers flags for VLE-mode. */
if (dialect & PPC_OPCODE_VLE
&& info->section->owner != NULL
&& bfd_get_flavour (info->section->owner) == bfd_target_elf_flavour
&& elf_object_id (info->section->owner) == PPC32_ELF_DATA
&& (elf_section_flags (info->section) & SHF_PPC_VLE) != 0)
return dialect;
else
return dialect & ~ PPC_OPCODE_VLE;
}
/* Handle -m and -M options that set cpu type, and .machine arg. */
ppc_cpu_t
ppc_parse_cpu (ppc_cpu_t ppc_cpu, ppc_cpu_t *sticky, const char *arg)
{
unsigned int i;
for (i = 0; i < sizeof (ppc_opts) / sizeof (ppc_opts[0]); i++)
if (strcmp (ppc_opts[i].opt, arg) == 0)
{
if (ppc_opts[i].sticky)
{
*sticky |= ppc_opts[i].sticky;
if ((ppc_cpu & ~*sticky) != 0)
break;
}
ppc_cpu = ppc_opts[i].cpu;
break;
}
if (i >= sizeof (ppc_opts) / sizeof (ppc_opts[0]))
return 0;
ppc_cpu |= *sticky;
return ppc_cpu;
}
/* Determine which set of machines to disassemble for. */
static void
powerpc_init_dialect (struct disassemble_info *info)
{
ppc_cpu_t dialect = 0;
ppc_cpu_t sticky = 0;
char *arg;
struct dis_private *priv = calloc (sizeof (*priv), 1);
if (priv == NULL)
priv = &private;
switch (info->mach)
{
case bfd_mach_ppc_403:
case bfd_mach_ppc_403gc:
dialect = ppc_parse_cpu (dialect, &sticky, "403");
break;
case bfd_mach_ppc_405:
dialect = ppc_parse_cpu (dialect, &sticky, "405");
break;
case bfd_mach_ppc_601:
dialect = ppc_parse_cpu (dialect, &sticky, "601");
break;
case bfd_mach_ppc_a35:
case bfd_mach_ppc_rs64ii:
case bfd_mach_ppc_rs64iii:
dialect = ppc_parse_cpu (dialect, &sticky, "pwr2") | PPC_OPCODE_64;
break;
case bfd_mach_ppc_e500:
dialect = ppc_parse_cpu (dialect, &sticky, "e500");
break;
case bfd_mach_ppc_e500mc:
dialect = ppc_parse_cpu (dialect, &sticky, "e500mc");
break;
case bfd_mach_ppc_e500mc64:
dialect = ppc_parse_cpu (dialect, &sticky, "e500mc64");
break;
case bfd_mach_ppc_e5500:
dialect = ppc_parse_cpu (dialect, &sticky, "e5500");
break;
case bfd_mach_ppc_e6500:
dialect = ppc_parse_cpu (dialect, &sticky, "e6500");
break;
case bfd_mach_ppc_titan:
dialect = ppc_parse_cpu (dialect, &sticky, "titan");
break;
case bfd_mach_ppc_vle:
dialect = ppc_parse_cpu (dialect, &sticky, "vle");
break;
default:
dialect = ppc_parse_cpu (dialect, &sticky, "power9") | PPC_OPCODE_ANY;
}
arg = info->disassembler_options;
while (arg != NULL)
{
ppc_cpu_t new_cpu = 0;
char *end = strchr (arg, ',');
if (end != NULL)
*end = 0;
if ((new_cpu = ppc_parse_cpu (dialect, &sticky, arg)) != 0)
dialect = new_cpu;
else if (strcmp (arg, "32") == 0)
dialect &= ~(ppc_cpu_t) PPC_OPCODE_64;
else if (strcmp (arg, "64") == 0)
dialect |= PPC_OPCODE_64;
else
fprintf (stderr, _("warning: ignoring unknown -M%s option\n"), arg);
if (end != NULL)
*end++ = ',';
arg = end;
}
info->private_data = priv;
POWERPC_DIALECT(info) = dialect;
}
#define PPC_OPCD_SEGS 64
static unsigned short powerpc_opcd_indices[PPC_OPCD_SEGS+1];
#define VLE_OPCD_SEGS 32
static unsigned short vle_opcd_indices[VLE_OPCD_SEGS+1];
/* Calculate opcode table indices to speed up disassembly,
and init dialect. */
void
disassemble_init_powerpc (struct disassemble_info *info)
{
int i;
unsigned short last;
if (powerpc_opcd_indices[PPC_OPCD_SEGS] == 0)
{
i = powerpc_num_opcodes;
while (--i >= 0)
{
unsigned op = PPC_OP (powerpc_opcodes[i].opcode);
powerpc_opcd_indices[op] = i;
}
last = powerpc_num_opcodes;
for (i = PPC_OPCD_SEGS; i > 0; --i)
{
if (powerpc_opcd_indices[i] == 0)
powerpc_opcd_indices[i] = last;
last = powerpc_opcd_indices[i];
}
i = vle_num_opcodes;
while (--i >= 0)
{
unsigned op = VLE_OP (vle_opcodes[i].opcode, vle_opcodes[i].mask);
unsigned seg = VLE_OP_TO_SEG (op);
vle_opcd_indices[seg] = i;
}
last = vle_num_opcodes;
for (i = VLE_OPCD_SEGS; i > 0; --i)
{
if (vle_opcd_indices[i] == 0)
vle_opcd_indices[i] = last;
last = vle_opcd_indices[i];
}
}
if (info->arch == bfd_arch_powerpc)
powerpc_init_dialect (info);
}
/* Print a big endian PowerPC instruction. */
int
print_insn_big_powerpc (bfd_vma memaddr, struct disassemble_info *info)
{
return print_insn_powerpc (memaddr, info, 1, get_powerpc_dialect (info));
}
/* Print a little endian PowerPC instruction. */
int
print_insn_little_powerpc (bfd_vma memaddr, struct disassemble_info *info)
{
return print_insn_powerpc (memaddr, info, 0, get_powerpc_dialect (info));
}
/* Print a POWER (RS/6000) instruction. */
int
print_insn_rs6000 (bfd_vma memaddr, struct disassemble_info *info)
{
return print_insn_powerpc (memaddr, info, 1, PPC_OPCODE_POWER);
}
/* Extract the operand value from the PowerPC or POWER instruction. */
static long
operand_value_powerpc (const struct powerpc_operand *operand,
unsigned long insn, ppc_cpu_t dialect)
{
long value;
int invalid;
/* Extract the value from the instruction. */
if (operand->extract)
value = (*operand->extract) (insn, dialect, &invalid);
else
{
if (operand->shift >= 0)
value = (insn >> operand->shift) & operand->bitm;
else
value = (insn << -operand->shift) & operand->bitm;
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
{
/* BITM is always some number of zeros followed by some
number of ones, followed by some number of zeros. */
unsigned long top = operand->bitm;
/* top & -top gives the rightmost 1 bit, so this
fills in any trailing zeros. */
top |= (top & -top) - 1;
top &= ~(top >> 1);
value = (value ^ top) - top;
}
}
return value;
}
/* Determine whether the optional operand(s) should be printed. */
static int
skip_optional_operands (const unsigned char *opindex,
unsigned long insn, ppc_cpu_t dialect)
{
const struct powerpc_operand *operand;
for (; *opindex != 0; opindex++)
{
operand = &powerpc_operands[*opindex];
if ((operand->flags & PPC_OPERAND_NEXT) != 0
|| ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
&& operand_value_powerpc (operand, insn, dialect) !=
ppc_optional_operand_value (operand)))
return 0;
}
return 1;
}
/* Find a match for INSN in the opcode table, given machine DIALECT.
A DIALECT of -1 is special, matching all machine opcode variations. */
static const struct powerpc_opcode *
lookup_powerpc (unsigned long insn, ppc_cpu_t dialect)
{
const struct powerpc_opcode *opcode;
const struct powerpc_opcode *opcode_end;
unsigned long op;
/* Get the major opcode of the instruction. */
op = PPC_OP (insn);
/* Find the first match in the opcode table for this major opcode. */
opcode_end = powerpc_opcodes + powerpc_opcd_indices[op + 1];
for (opcode = powerpc_opcodes + powerpc_opcd_indices[op];
opcode < opcode_end;
++opcode)
{
const unsigned char *opindex;
const struct powerpc_operand *operand;
int invalid;
if ((insn & opcode->mask) != opcode->opcode
|| (dialect != (ppc_cpu_t) -1
&& ((opcode->flags & dialect) == 0
|| (opcode->deprecated & dialect) != 0)))
continue;
/* Check validity of operands. */
invalid = 0;
for (opindex = opcode->operands; *opindex != 0; opindex++)
{
operand = powerpc_operands + *opindex;
if (operand->extract)
(*operand->extract) (insn, dialect, &invalid);
}
if (invalid)
continue;
return opcode;
}
return NULL;
}
/* Find a match for INSN in the VLE opcode table. */
static const struct powerpc_opcode *
lookup_vle (unsigned long insn)
{
const struct powerpc_opcode *opcode;
const struct powerpc_opcode *opcode_end;
unsigned op, seg;
op = PPC_OP (insn);
if (op >= 0x20 && op <= 0x37)
{
/* This insn has a 4-bit opcode. */
op &= 0x3c;
}
seg = VLE_OP_TO_SEG (op);
/* Find the first match in the opcode table for this major opcode. */
opcode_end = vle_opcodes + vle_opcd_indices[seg + 1];
for (opcode = vle_opcodes + vle_opcd_indices[seg];
opcode < opcode_end;
++opcode)
{
unsigned long table_opcd = opcode->opcode;
unsigned long table_mask = opcode->mask;
bfd_boolean table_op_is_short = PPC_OP_SE_VLE(table_mask);
unsigned long insn2;
const unsigned char *opindex;
const struct powerpc_operand *operand;
int invalid;
insn2 = insn;
if (table_op_is_short)
insn2 >>= 16;
if ((insn2 & table_mask) != table_opcd)
continue;
/* Check validity of operands. */
invalid = 0;
for (opindex = opcode->operands; *opindex != 0; ++opindex)
{
operand = powerpc_operands + *opindex;
if (operand->extract)
(*operand->extract) (insn, (ppc_cpu_t)0, &invalid);
}
if (invalid)
continue;
return opcode;
}
return NULL;
}
/* Print a PowerPC or POWER instruction. */
static int
print_insn_powerpc (bfd_vma memaddr,
struct disassemble_info *info,
int bigendian,
ppc_cpu_t dialect)
{
bfd_byte buffer[4];
int status;
unsigned long insn;
const struct powerpc_opcode *opcode;
bfd_boolean insn_is_short;
status = (*info->read_memory_func) (memaddr, buffer, 4, info);
if (status != 0)
{
/* The final instruction may be a 2-byte VLE insn. */
if ((dialect & PPC_OPCODE_VLE) != 0)
{
/* Clear buffer so unused bytes will not have garbage in them. */
buffer[0] = buffer[1] = buffer[2] = buffer[3] = 0;
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
}
else
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
}
if (bigendian)
insn = bfd_getb32 (buffer);
else
insn = bfd_getl32 (buffer);
/* Get the major opcode of the insn. */
opcode = NULL;
insn_is_short = FALSE;
if ((dialect & PPC_OPCODE_VLE) != 0)
{
opcode = lookup_vle (insn);
if (opcode != NULL)
insn_is_short = PPC_OP_SE_VLE(opcode->mask);
}
if (opcode == NULL)
opcode = lookup_powerpc (insn, dialect);
if (opcode == NULL && (dialect & PPC_OPCODE_ANY) != 0)
opcode = lookup_powerpc (insn, (ppc_cpu_t) -1);
if (opcode != NULL)
{
const unsigned char *opindex;
const struct powerpc_operand *operand;
int need_comma;
int need_paren;
int skip_optional;
if (opcode->operands[0] != 0)
(*info->fprintf_func) (info->stream, "%-7s ", opcode->name);
else
(*info->fprintf_func) (info->stream, "%s", opcode->name);
if (insn_is_short)
/* The operands will be fetched out of the 16-bit instruction. */
insn >>= 16;
/* Now extract and print the operands. */
need_comma = 0;
need_paren = 0;
skip_optional = -1;
for (opindex = opcode->operands; *opindex != 0; opindex++)
{
long value;
operand = powerpc_operands + *opindex;
/* Operands that are marked FAKE are simply ignored. We
already made sure that the extract function considered
the instruction to be valid. */
if ((operand->flags & PPC_OPERAND_FAKE) != 0)
continue;
/* If all of the optional operands have the value zero,
then don't print any of them. */
if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
{
if (skip_optional < 0)
skip_optional = skip_optional_operands (opindex, insn,
dialect);
if (skip_optional)
continue;
}
value = operand_value_powerpc (operand, insn, dialect);
if (need_comma)
{
(*info->fprintf_func) (info->stream, ",");
need_comma = 0;
}
/* Print the operand as directed by the flags. */
if ((operand->flags & PPC_OPERAND_GPR) != 0
|| ((operand->flags & PPC_OPERAND_GPR_0) != 0 && value != 0))
(*info->fprintf_func) (info->stream, "r%ld", value);
else if ((operand->flags & PPC_OPERAND_FPR) != 0)
(*info->fprintf_func) (info->stream, "f%ld", value);
else if ((operand->flags & PPC_OPERAND_VR) != 0)
(*info->fprintf_func) (info->stream, "v%ld", value);
else if ((operand->flags & PPC_OPERAND_VSR) != 0)
(*info->fprintf_func) (info->stream, "vs%ld", value);
else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0)
(*info->print_address_func) (memaddr + value, info);
else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
(*info->print_address_func) ((bfd_vma) value & 0xffffffff, info);
else if ((operand->flags & PPC_OPERAND_FSL) != 0)
(*info->fprintf_func) (info->stream, "fsl%ld", value);
else if ((operand->flags & PPC_OPERAND_FCR) != 0)
(*info->fprintf_func) (info->stream, "fcr%ld", value);
else if ((operand->flags & PPC_OPERAND_UDI) != 0)
(*info->fprintf_func) (info->stream, "%ld", value);
else if ((operand->flags & PPC_OPERAND_CR_REG) != 0
&& (((dialect & PPC_OPCODE_PPC) != 0)
|| ((dialect & PPC_OPCODE_VLE) != 0)))
(*info->fprintf_func) (info->stream, "cr%ld", value);
else if (((operand->flags & PPC_OPERAND_CR_BIT) != 0)
&& (((dialect & PPC_OPCODE_PPC) != 0)
|| ((dialect & PPC_OPCODE_VLE) != 0)))
{
static const char *cbnames[4] = { "lt", "gt", "eq", "so" };
int cr;
int cc;
cr = value >> 2;
if (cr != 0)
(*info->fprintf_func) (info->stream, "4*cr%d+", cr);
cc = value & 3;
(*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
}
else
(*info->fprintf_func) (info->stream, "%d", (int) value);
if (need_paren)
{
(*info->fprintf_func) (info->stream, ")");
need_paren = 0;
}
if ((operand->flags & PPC_OPERAND_PARENS) == 0)
need_comma = 1;
else
{
(*info->fprintf_func) (info->stream, "(");
need_paren = 1;
}
}
/* We have found and printed an instruction.
If it was a short VLE instruction we have more to do. */
if (insn_is_short)
{
memaddr += 2;
return 2;
}
else
/* Otherwise, return. */
return 4;
}
/* We could not find a match. */
(*info->fprintf_func) (info->stream, ".long 0x%lx", insn);
return 4;
}
void
print_ppc_disassembler_options (FILE *stream)
{
unsigned int i, col;
fprintf (stream, _("\n\
The following PPC specific disassembler options are supported for use with\n\
the -M switch:\n"));
for (col = 0, i = 0; i < sizeof (ppc_opts) / sizeof (ppc_opts[0]); i++)
{
col += fprintf (stream, " %s,", ppc_opts[i].opt);
if (col > 66)
{
fprintf (stream, "\n");
col = 0;
}
}
fprintf (stream, " 32, 64\n");
}