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Diffstat (limited to 'opcodes/ppc-dis.c')
| -rw-r--r-- | opcodes/ppc-dis.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/opcodes/ppc-dis.c b/opcodes/ppc-dis.c deleted file mode 100644 index 70716ea2471..00000000000 --- a/opcodes/ppc-dis.c +++ /dev/null @@ -1,238 +0,0 @@ -/* ppc-dis.c -- Disassemble PowerPC instructions - Copyright 1994 Free Software Foundation, Inc. - Written by Ian Lance Taylor, Cygnus Support - -This file is part of GDB, GAS, and the GNU binutils. - -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. - -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. - -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. */ - -#include <stdio.h> -#include "ansidecl.h" -#include "sysdep.h" -#include "dis-asm.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 PARAMS ((bfd_vma, struct disassemble_info *, - int bigendian, int dialect)); - -/* Print a big endian PowerPC instruction. For convenience, also - disassemble instructions supported by the Motorola PowerPC 601. */ - -int -print_insn_big_powerpc (memaddr, info) - bfd_vma memaddr; - struct disassemble_info *info; -{ - return print_insn_powerpc (memaddr, info, 1, - PPC_OPCODE_PPC | PPC_OPCODE_601); -} - -/* Print a little endian PowerPC instruction. For convenience, also - disassemble instructions supported by the Motorola PowerPC 601. */ - -int -print_insn_little_powerpc (memaddr, info) - bfd_vma memaddr; - struct disassemble_info *info; -{ - return print_insn_powerpc (memaddr, info, 0, - PPC_OPCODE_PPC | PPC_OPCODE_601); -} - -/* Print a POWER (RS/6000) instruction. */ - -int -print_insn_rs6000 (memaddr, info) - bfd_vma memaddr; - struct disassemble_info *info; -{ - return print_insn_powerpc (memaddr, info, 1, PPC_OPCODE_POWER); -} - -/* 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; -{ - bfd_byte buffer[4]; - int status; - unsigned long insn; - const struct powerpc_opcode *opcode; - const struct powerpc_opcode *opcode_end; - unsigned long op; - - status = (*info->read_memory_func) (memaddr, buffer, 4, info); - if (status != 0) - { - (*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 instruction. */ - op = PPC_OP (insn); - - /* 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; - for (opcode = powerpc_opcodes; opcode < opcode_end; opcode++) - { - unsigned long table_op; - const unsigned char *opindex; - const struct powerpc_operand *operand; - int invalid; - int need_comma; - int need_paren; - - table_op = PPC_OP (opcode->opcode); - if (op < table_op) - break; - if (op > table_op) - continue; - - if ((insn & opcode->mask) != opcode->opcode - || (opcode->flags & dialect) == 0) - continue; - - /* Make two passes over the operands. First see if any of them - have extraction functions, and, if they do, make sure the - instruction is valid. */ - invalid = 0; - for (opindex = opcode->operands; *opindex != 0; opindex++) - { - operand = powerpc_operands + *opindex; - if (operand->extract) - (*operand->extract) (insn, &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"); - - /* Now extract and print the operands. */ - need_comma = 0; - need_paren = 0; - 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; - - /* Extract the value from the instruction. */ - if (operand->extract) - value = (*operand->extract) (insn, (int *) NULL); - else - { - 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 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; - - 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) - (*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_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) - (*info->fprintf_func) (info->stream, "%ld", value); - else - { - if (operand->bits == 3) - (*info->fprintf_func) (info->stream, "cr%d", value); - else - { - 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; - if (cc != 0) - { - if (cr != 0) - (*info->fprintf_func) (info->stream, "+"); - (*info->fprintf_func) (info->stream, "%s", cbnames[cc]); - } - } - } - - 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; return. */ - return 4; - } - - /* We could not find a match. */ - (*info->fprintf_func) (info->stream, ".long 0x%lx", insn); - - return 4; -} |