/* ppc-dis.c -- Disassemble PowerPC instructions
- Copyright 1994, 1995, 2000, 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright 1994, 1995, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+ 2008, 2009, 2010 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support
-This file is part of GDB, GAS, and the GNU binutils.
+ This file is part of the GNU opcodes library.
-GDB, GAS, and the GNU binutils are free software; you can redistribute
-them and/or modify them under the terms of the GNU General Public
-License as published by the Free Software Foundation; either version
-2, or (at your option) any later version.
+ 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.
-GDB, GAS, and the GNU binutils are distributed in the hope that they
-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.
+ 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. */
+ 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 <stdio.h>
#include "sysdep.h"
#include "dis-asm.h"
+#include "opintl.h"
#include "opcode/ppc.h"
/* This file provides several disassembler functions, all of which use
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);
-static int print_insn_powerpc (bfd_vma, struct disassemble_info *, int, int);
-
-struct dis_private {
+struct dis_private
+{
/* Stash the result of parsing disassembler_options here. */
- int dialect;
+ ppc_cpu_t dialect;
+};
+
+#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_ALTIVEC),
+ 0 },
+ { "7455", (PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC),
+ 0 },
+ { "750cl", (PPC_OPCODE_PPC | PPC_OPCODE_PPCPS)
+ , 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 },
+ { "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 },
+ { "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 },
+ { "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 },
+ { "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 },
+ { "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 },
+ { "vsx", (PPC_OPCODE_PPC),
+ PPC_OPCODE_VSX },
};
-/* Determine which set of machines to disassemble for. PPC403/601 or
- BookE. For convenience, also disassemble instructions supported
- by the AltiVec vector unit. */
+/* Handle -m and -M options that set cpu type, and .machine arg. */
+
+ppc_cpu_t
+ppc_parse_cpu (ppc_cpu_t ppc_cpu, const char *arg)
+{
+ /* Sticky bits. */
+ ppc_cpu_t retain_flags = ppc_cpu & (PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX
+ | PPC_OPCODE_SPE | PPC_OPCODE_ANY);
+ 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)
+ {
+ retain_flags |= ppc_opts[i].sticky;
+ if ((ppc_cpu & ~(ppc_cpu_t) (PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX
+ | PPC_OPCODE_SPE | PPC_OPCODE_ANY)) != 0)
+ break;
+ }
+ ppc_cpu = ppc_opts[i].cpu;
+ break;
+ }
+ if (i >= sizeof (ppc_opts) / sizeof (ppc_opts[0]))
+ return 0;
+
+ ppc_cpu |= retain_flags;
+ return ppc_cpu;
+}
+
+/* Determine which set of machines to disassemble for. */
static int
-powerpc_dialect (struct disassemble_info *info)
+powerpc_init_dialect (struct disassemble_info *info)
{
- int dialect = PPC_OPCODE_PPC;
-
- if (BFD_DEFAULT_TARGET_SIZE == 64)
- dialect |= PPC_OPCODE_64;
-
- if (info->disassembler_options
- && strstr (info->disassembler_options, "booke") != NULL)
- dialect |= PPC_OPCODE_BOOKE | PPC_OPCODE_BOOKE64;
- else if ((info->mach == bfd_mach_ppc_e500)
- || (info->disassembler_options
- && strstr (info->disassembler_options, "e500") != NULL))
- dialect |= (PPC_OPCODE_BOOKE
- | PPC_OPCODE_SPE | PPC_OPCODE_ISEL
- | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
- | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
- | PPC_OPCODE_RFMCI);
- else if (info->disassembler_options
- && strstr (info->disassembler_options, "efs") != NULL)
- dialect |= PPC_OPCODE_EFS;
- else
- dialect |= (PPC_OPCODE_403 | PPC_OPCODE_601 | PPC_OPCODE_CLASSIC
- | PPC_OPCODE_COMMON | PPC_OPCODE_ALTIVEC);
+ ppc_cpu_t dialect = 0;
+ char *arg;
+ struct dis_private *priv = calloc (sizeof (*priv), 1);
- if (info->disassembler_options
- && strstr (info->disassembler_options, "power4") != NULL)
- dialect |= PPC_OPCODE_POWER4;
+ if (priv == NULL)
+ return FALSE;
- if (info->disassembler_options
- && strstr (info->disassembler_options, "power5") != NULL)
- dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5;
+ arg = info->disassembler_options;
+ while (arg != NULL)
+ {
+ ppc_cpu_t new_cpu = 0;
+ char *end = strchr (arg, ',');
+
+ if (end != NULL)
+ *end = 0;
- if (info->disassembler_options
- && strstr (info->disassembler_options, "any") != NULL)
- dialect |= PPC_OPCODE_ANY;
+ if ((new_cpu = ppc_parse_cpu (dialect, 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 (info->disassembler_options)
+ if (end != NULL)
+ *end++ = ',';
+ arg = end;
+ }
+
+ if ((dialect & ~(ppc_cpu_t) PPC_OPCODE_64) == 0)
{
- if (strstr (info->disassembler_options, "32") != NULL)
- dialect &= ~PPC_OPCODE_64;
- else if (strstr (info->disassembler_options, "64") != NULL)
+ if (info->mach == bfd_mach_ppc64)
dialect |= PPC_OPCODE_64;
+ else
+ dialect &= ~(ppc_cpu_t) PPC_OPCODE_64;
+ /* Choose a reasonable default. */
+ dialect |= (PPC_OPCODE_PPC | PPC_OPCODE_COMMON | PPC_OPCODE_601
+ | PPC_OPCODE_ALTIVEC);
}
- ((struct dis_private *) &info->private_data)->dialect = dialect;
- return dialect;
+ info->private_data = priv;
+ POWERPC_DIALECT(info) = dialect;
+
+ return TRUE;
}
/* Print a big endian PowerPC instruction. */
int
print_insn_big_powerpc (bfd_vma memaddr, struct disassemble_info *info)
{
- int dialect = ((struct dis_private *) &info->private_data)->dialect;
- return print_insn_powerpc (memaddr, info, 1, dialect);
+ if (info->private_data == NULL && !powerpc_init_dialect (info))
+ return -1;
+ return print_insn_powerpc (memaddr, info, 1, POWERPC_DIALECT(info));
}
/* Print a little endian PowerPC instruction. */
int
print_insn_little_powerpc (bfd_vma memaddr, struct disassemble_info *info)
{
- int dialect = ((struct dis_private *) &info->private_data)->dialect;
- return print_insn_powerpc (memaddr, info, 0, dialect);
+ if (info->private_data == NULL && !powerpc_init_dialect (info))
+ return -1;
+ return print_insn_powerpc (memaddr, info, 0, POWERPC_DIALECT(info));
}
/* Print a POWER (RS/6000) instruction. */
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
+ {
+ 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 numer 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) != 0))
+ return 0;
+ }
+
+ return 1;
+}
+
/* Print a PowerPC or POWER instruction. */
static int
print_insn_powerpc (bfd_vma memaddr,
struct disassemble_info *info,
int bigendian,
- int dialect)
+ ppc_cpu_t dialect)
{
bfd_byte buffer[4];
int status;
const struct powerpc_opcode *opcode;
const struct powerpc_opcode *opcode_end;
unsigned long op;
-
- if (dialect == 0)
- dialect = powerpc_dialect (info);
+ ppc_cpu_t dialect_orig = dialect;
status = (*info->read_memory_func) (memaddr, buffer, 4, info);
if (status != 0)
int invalid;
int need_comma;
int need_paren;
+ int skip_optional;
table_op = PPC_OP (opcode->opcode);
if (op < table_op)
continue;
if ((insn & opcode->mask) != opcode->opcode
- || (opcode->flags & dialect) == 0)
+ || (opcode->flags & dialect) == 0
+ || (opcode->deprecated & dialect_orig) != 0)
continue;
/* Make two passes over the operands. First see if any of them
/* Now extract and print the operands. */
need_comma = 0;
need_paren = 0;
+ skip_optional = -1;
for (opindex = opcode->operands; *opindex != 0; opindex++)
{
long value;
if ((operand->flags & PPC_OPERAND_FAKE) != 0)
continue;
- /* Extract the value from the instruction. */
- if (operand->extract)
- value = (*operand->extract) (insn, dialect, &invalid);
- else
+ /* If all of the optional operands have the value zero,
+ then don't print any of them. */
+ if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
{
- value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
- if ((operand->flags & PPC_OPERAND_SIGNED) != 0
- && (value & (1 << (operand->bits - 1))) != 0)
- value -= 1 << operand->bits;
+ if (skip_optional < 0)
+ skip_optional = skip_optional_operands (opindex, insn,
+ dialect);
+ if (skip_optional)
+ continue;
}
- /* If the operand is optional, and the value is zero, don't
- print anything. */
- if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
- && (operand->flags & PPC_OPERAND_NEXT) == 0
- && value == 0)
- continue;
+ value = operand_value_powerpc (operand, insn, dialect);
if (need_comma)
{
(*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_CR) == 0
- || (dialect & PPC_OPCODE_PPC) == 0)
+ 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
+ else if ((operand->flags & PPC_OPERAND_CR) != 0
+ && (dialect & PPC_OPCODE_PPC) != 0)
{
- if (operand->bits == 3)
+ if (operand->bitm == 7)
(*info->fprintf_func) (info->stream, "cr%ld", value);
else
{
(*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
}
}
+ else
+ (*info->fprintf_func) (info->stream, "%ld", value);
if (need_paren)
{
if ((dialect & PPC_OPCODE_ANY) != 0)
{
- dialect = ~PPC_OPCODE_ANY;
+ dialect = ~(ppc_cpu_t) PPC_OPCODE_ANY;
goto again;
}
void
print_ppc_disassembler_options (FILE *stream)
{
- fprintf (stream, "\n\
+ unsigned int i, col;
+
+ fprintf (stream, _("\n\
The following PPC specific disassembler options are supported for use with\n\
-the -M switch:\n");
-
- fprintf (stream, " booke|booke32|booke64 Disassemble the BookE instructions\n");
- fprintf (stream, " e500|e500x2 Disassemble the e500 instructions\n");
- fprintf (stream, " efs Disassemble the EFS instructions\n");
- fprintf (stream, " power4 Disassemble the Power4 instructions\n");
- fprintf (stream, " power5 Disassemble the Power5 instructions\n");
- fprintf (stream, " 32 Do not disassemble 64-bit instructions\n");
- fprintf (stream, " 64 Allow disassembly of 64-bit instructions\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");
}