/* ppc-dis.c -- Disassemble PowerPC instructions
- Copyright 1994 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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"
in both big and little endian mode and also for the POWER (RS/6000)
chip. */
-static int print_insn_powerpc PARAMS ((bfd_vma, struct disassemble_info *,
- int bigendian, int dialect));
+static int print_insn_powerpc (bfd_vma, struct disassemble_info *, int, int);
-/* Print a big endian PowerPC instruction. For convenience, also
- disassemble instructions supported by the Motorola PowerPC 601. */
+/* Determine which set of machines to disassemble for. PPC403/601 or
+ BookE. For convenience, also disassemble instructions supported
+ by the AltiVec vector unit. */
+
+static int
+powerpc_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, "ppcps") != NULL)
+ dialect |= PPC_OPCODE_PPCPS;
+ else 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 if (info->disassembler_options
+ && strstr (info->disassembler_options, "e300") != NULL)
+ dialect |= PPC_OPCODE_E300 | PPC_OPCODE_CLASSIC | PPC_OPCODE_COMMON;
+ else if (info->disassembler_options
+ && strstr (info->disassembler_options, "440") != NULL)
+ dialect |= PPC_OPCODE_BOOKE | PPC_OPCODE_32
+ | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI;
+ else
+ dialect |= (PPC_OPCODE_403 | PPC_OPCODE_601 | PPC_OPCODE_CLASSIC
+ | PPC_OPCODE_COMMON | PPC_OPCODE_ALTIVEC);
+
+ if (info->disassembler_options
+ && strstr (info->disassembler_options, "power4") != NULL)
+ dialect |= PPC_OPCODE_POWER4;
+
+ if (info->disassembler_options
+ && strstr (info->disassembler_options, "power5") != NULL)
+ dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5;
+
+ if (info->disassembler_options
+ && strstr (info->disassembler_options, "cell") != NULL)
+ dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_CELL | PPC_OPCODE_ALTIVEC;
+
+ if (info->disassembler_options
+ && strstr (info->disassembler_options, "power6") != NULL)
+ dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC;
+
+ if (info->disassembler_options
+ && strstr (info->disassembler_options, "any") != NULL)
+ dialect |= PPC_OPCODE_ANY;
+
+ if (info->disassembler_options)
+ {
+ if (strstr (info->disassembler_options, "32") != NULL)
+ dialect &= ~PPC_OPCODE_64;
+ else if (strstr (info->disassembler_options, "64") != NULL)
+ dialect |= PPC_OPCODE_64;
+ }
+
+ info->private_data = (char *) 0 + dialect;
+ return dialect;
+}
+
+/* Print a big endian PowerPC instruction. */
int
-print_insn_big_powerpc (memaddr, info)
- bfd_vma memaddr;
- struct disassemble_info *info;
+print_insn_big_powerpc (bfd_vma memaddr, struct disassemble_info *info)
{
- return print_insn_powerpc (memaddr, info, 1,
- PPC_OPCODE_PPC | PPC_OPCODE_601);
+ int dialect = (char *) info->private_data - (char *) 0;
+ return print_insn_powerpc (memaddr, info, 1, dialect);
}
-/* Print a little endian PowerPC instruction. For convenience, also
- disassemble instructions supported by the Motorola PowerPC 601. */
+/* Print a little endian PowerPC instruction. */
int
-print_insn_little_powerpc (memaddr, info)
- bfd_vma memaddr;
- struct disassemble_info *info;
+print_insn_little_powerpc (bfd_vma memaddr, struct disassemble_info *info)
{
- return print_insn_powerpc (memaddr, info, 0,
- PPC_OPCODE_PPC | PPC_OPCODE_601);
+ int dialect = (char *) info->private_data - (char *) 0;
+ return print_insn_powerpc (memaddr, info, 0, dialect);
}
/* Print a POWER (RS/6000) instruction. */
int
-print_insn_rs6000 (memaddr, info)
- bfd_vma memaddr;
- struct disassemble_info *info;
+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, int 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, int 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 (memaddr, info, bigendian, dialect)
- bfd_vma memaddr;
- struct disassemble_info *info;
- int bigendian;
- int dialect;
+print_insn_powerpc (bfd_vma memaddr,
+ struct disassemble_info *info,
+ int bigendian,
+ int dialect)
{
bfd_byte buffer[4];
int status;
const struct powerpc_opcode *opcode_end;
unsigned long op;
+ if (dialect == 0)
+ dialect = powerpc_dialect (info);
+
status = (*info->read_memory_func) (memaddr, buffer, 4, info);
if (status != 0)
{
/* Find the first match in the opcode table. We could speed this up
a bit by doing a binary search on the major opcode. */
opcode_end = powerpc_opcodes + powerpc_num_opcodes;
+ again:
for (opcode = powerpc_opcodes; opcode < opcode_end; opcode++)
{
unsigned long table_op;
int invalid;
int need_comma;
int need_paren;
+ int skip_optional;
table_op = PPC_OP (opcode->opcode);
if (op < table_op)
{
operand = powerpc_operands + *opindex;
if (operand->extract)
- (*operand->extract) (insn, &invalid);
+ (*operand->extract) (insn, dialect, &invalid);
}
if (invalid)
continue;
/* The instruction is valid. */
- (*info->fprintf_func) (info->stream, "%s", opcode->name);
if (opcode->operands[0] != 0)
- (*info->fprintf_func) (info->stream, "\t");
+ (*info->fprintf_func) (info->stream, "%-7s ", opcode->name);
+ else
+ (*info->fprintf_func) (info->stream, "%s", opcode->name);
/* 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, (int *) NULL);
- 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)
{
}
/* Print the operand as directed by the flags. */
- if ((operand->flags & PPC_OPERAND_GPR) != 0)
+ 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_RELATIVE) != 0)
(*info->print_address_func) (memaddr + value, info);
else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
(*info->fprintf_func) (info->stream, "%ld", value);
else
{
- if (operand->bits == 3)
- (*info->fprintf_func) (info->stream, "cr%d", value);
+ if (operand->bitm == 7)
+ (*info->fprintf_func) (info->stream, "cr%ld", value);
else
{
static const char *cbnames[4] = { "lt", "gt", "eq", "so" };
cr = value >> 2;
if (cr != 0)
- (*info->fprintf_func) (info->stream, "4*cr%d", cr);
+ (*info->fprintf_func) (info->stream, "4*cr%d+", cr);
cc = value & 3;
- if (cc != 0)
- {
- if (cr != 0)
- (*info->fprintf_func) (info->stream, "+");
- (*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
- }
+ (*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
}
}
return 4;
}
+ if ((dialect & PPC_OPCODE_ANY) != 0)
+ {
+ dialect = ~PPC_OPCODE_ANY;
+ goto again;
+ }
+
/* We could not find a match. */
(*info->fprintf_func) (info->stream, ".long 0x%lx", insn);
return 4;
}
+
+void
+print_ppc_disassembler_options (FILE *stream)
+{
+ 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, " e300 Disassemble the e300 instructions\n");
+ fprintf (stream, " e500|e500x2 Disassemble the e500 instructions\n");
+ fprintf (stream, " 440 Disassemble the 440 instructions\n");
+ fprintf (stream, " efs Disassemble the EFS instructions\n");
+ fprintf (stream, " ppcps Disassemble the PowerPC paired singles instructions\n");
+ fprintf (stream, " power4 Disassemble the Power4 instructions\n");
+ fprintf (stream, " power5 Disassemble the Power5 instructions\n");
+ fprintf (stream, " power6 Disassemble the Power6 instructions\n");
+ fprintf (stream, " 32 Do not disassemble 64-bit instructions\n");
+ fprintf (stream, " 64 Allow disassembly of 64-bit instructions\n");
+}
projects / deliverable / binutils-gdb.git / blobdiff