/* pj-dis.c -- Disassemble picoJava instructions.
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/* pj-dis.c -- Disassemble picoJava instructions.
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Copyright 1999, 2000, 2001, 2002, 2005, 2007 Free Software Foundation, Inc.
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Copyright 1999, 2000, 2001, 2002, 2005, 2007 Free Software Foundation, Inc.
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Contributed by Steve Chamberlain, of Transmeta (sac@pobox.com).
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Contributed by Steve Chamberlain, of Transmeta (sac@pobox.com).
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This file is part of the GNU opcodes library.
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This file is part of the GNU opcodes library.
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This library is free software; you can redistribute it and/or modify
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This library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdio.h>
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#include "sysdep.h"
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#include "sysdep.h"
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#include "opcode/pj.h"
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#include "opcode/pj.h"
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#include "dis-asm.h"
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#include "dis-asm.h"
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extern const pj_opc_info_t pj_opc_info[512];
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extern const pj_opc_info_t pj_opc_info[512];
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static int
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static int
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get_int (bfd_vma memaddr, int *iptr, struct disassemble_info *info)
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get_int (bfd_vma memaddr, int *iptr, struct disassemble_info *info)
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{
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{
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unsigned char ival[4];
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unsigned char ival[4];
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int status = info->read_memory_func (memaddr, ival, 4, info);
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int status = info->read_memory_func (memaddr, ival, 4, info);
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*iptr = (ival[0] << 24)
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*iptr = (ival[0] << 24)
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| (ival[1] << 16)
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| (ival[1] << 16)
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| (ival[2] << 8)
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| (ival[2] << 8)
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| (ival[3] << 0);
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| (ival[3] << 0);
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return status;
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return status;
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}
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}
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int
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int
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print_insn_pj (bfd_vma addr, struct disassemble_info *info)
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print_insn_pj (bfd_vma addr, struct disassemble_info *info)
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{
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{
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fprintf_ftype fprintf_fn = info->fprintf_func;
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fprintf_ftype fprintf_fn = info->fprintf_func;
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void *stream = info->stream;
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void *stream = info->stream;
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unsigned char opcode;
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unsigned char opcode;
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int status;
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int status;
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if ((status = info->read_memory_func (addr, &opcode, 1, info)))
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if ((status = info->read_memory_func (addr, &opcode, 1, info)))
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goto fail;
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goto fail;
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if (opcode == 0xff)
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if (opcode == 0xff)
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{
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{
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unsigned char byte_2;
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unsigned char byte_2;
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if ((status = info->read_memory_func (addr + 1, &byte_2, 1, info)))
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if ((status = info->read_memory_func (addr + 1, &byte_2, 1, info)))
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goto fail;
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goto fail;
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fprintf_fn (stream, "%s\t", pj_opc_info[opcode + byte_2].u.name);
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fprintf_fn (stream, "%s\t", pj_opc_info[opcode + byte_2].u.name);
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return 2;
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return 2;
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}
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}
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else
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else
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{
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{
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char *sep = "\t";
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char *sep = "\t";
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int insn_start = addr;
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int insn_start = addr;
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const pj_opc_info_t *op = &pj_opc_info[opcode];
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const pj_opc_info_t *op = &pj_opc_info[opcode];
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int a;
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int a;
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addr++;
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addr++;
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fprintf_fn (stream, "%s", op->u.name);
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fprintf_fn (stream, "%s", op->u.name);
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/* The tableswitch instruction is followed by the default
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/* The tableswitch instruction is followed by the default
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address, low value, high value and the destinations. */
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address, low value, high value and the destinations. */
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if (strcmp (op->u.name, "tableswitch") == 0)
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if (strcmp (op->u.name, "tableswitch") == 0)
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{
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{
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int lowval;
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int lowval;
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int highval;
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int highval;
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int val;
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int val;
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addr = (addr + 3) & ~3;
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addr = (addr + 3) & ~3;
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if ((status = get_int (addr, &val, info)))
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if ((status = get_int (addr, &val, info)))
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goto fail;
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goto fail;
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fprintf_fn (stream, " default: ");
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fprintf_fn (stream, " default: ");
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(*info->print_address_func) (val + insn_start, info);
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(*info->print_address_func) (val + insn_start, info);
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addr += 4;
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addr += 4;
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if ((status = get_int (addr, &lowval, info)))
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if ((status = get_int (addr, &lowval, info)))
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goto fail;
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goto fail;
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addr += 4;
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addr += 4;
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if ((status = get_int (addr, &highval, info)))
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if ((status = get_int (addr, &highval, info)))
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goto fail;
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goto fail;
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addr += 4;
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addr += 4;
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while (lowval <= highval)
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while (lowval <= highval)
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{
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{
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if ((status = get_int (addr, &val, info)))
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if ((status = get_int (addr, &val, info)))
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goto fail;
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goto fail;
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fprintf_fn (stream, " %d:[", lowval);
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fprintf_fn (stream, " %d:[", lowval);
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(*info->print_address_func) (val + insn_start, info);
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(*info->print_address_func) (val + insn_start, info);
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fprintf_fn (stream, " ]");
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fprintf_fn (stream, " ]");
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addr += 4;
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addr += 4;
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lowval++;
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lowval++;
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}
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}
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return addr - insn_start;
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return addr - insn_start;
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}
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}
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/* The lookupswitch instruction is followed by the default
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/* The lookupswitch instruction is followed by the default
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address, element count and pairs of values and
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address, element count and pairs of values and
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addresses. */
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addresses. */
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if (strcmp (op->u.name, "lookupswitch") == 0)
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if (strcmp (op->u.name, "lookupswitch") == 0)
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{
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{
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int count;
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int count;
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int val;
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int val;
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addr = (addr + 3) & ~3;
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addr = (addr + 3) & ~3;
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if ((status = get_int (addr, &val, info)))
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if ((status = get_int (addr, &val, info)))
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goto fail;
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goto fail;
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addr += 4;
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addr += 4;
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fprintf_fn (stream, " default: ");
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fprintf_fn (stream, " default: ");
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(*info->print_address_func) (val + insn_start, info);
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(*info->print_address_func) (val + insn_start, info);
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if ((status = get_int (addr, &count, info)))
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if ((status = get_int (addr, &count, info)))
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goto fail;
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goto fail;
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addr += 4;
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addr += 4;
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while (count--)
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while (count--)
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{
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{
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if ((status = get_int (addr, &val, info)))
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if ((status = get_int (addr, &val, info)))
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goto fail;
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goto fail;
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addr += 4;
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addr += 4;
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fprintf_fn (stream, " %d:[", val);
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fprintf_fn (stream, " %d:[", val);
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if ((status = get_int (addr, &val, info)))
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if ((status = get_int (addr, &val, info)))
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goto fail;
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goto fail;
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addr += 4;
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addr += 4;
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(*info->print_address_func) (val + insn_start, info);
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(*info->print_address_func) (val + insn_start, info);
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fprintf_fn (stream, " ]");
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fprintf_fn (stream, " ]");
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}
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}
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return addr - insn_start;
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return addr - insn_start;
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}
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}
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for (a = 0; op->arg[a]; a++)
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for (a = 0; op->arg[a]; a++)
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{
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{
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unsigned char data[4];
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unsigned char data[4];
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int val = 0;
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int val = 0;
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int i;
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int i;
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int size = ASIZE (op->arg[a]);
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int size = ASIZE (op->arg[a]);
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if ((status = info->read_memory_func (addr, data, size, info)))
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if ((status = info->read_memory_func (addr, data, size, info)))
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goto fail;
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goto fail;
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val = (UNS (op->arg[0]) || ((data[0] & 0x80) == 0)) ? 0 : -1;
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val = (UNS (op->arg[0]) || ((data[0] & 0x80) == 0)) ? 0 : -1;
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for (i = 0; i < size; i++)
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for (i = 0; i < size; i++)
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val = (val << 8) | (data[i] & 0xff);
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val = (val << 8) | (data[i] & 0xff);
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if (PCREL (op->arg[a]))
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if (PCREL (op->arg[a]))
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(*info->print_address_func) (val + insn_start, info);
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(*info->print_address_func) (val + insn_start, info);
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else
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else
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fprintf_fn (stream, "%s%d", sep, val);
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fprintf_fn (stream, "%s%d", sep, val);
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sep = ",";
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sep = ",";
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addr += size;
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addr += size;
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}
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}
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return op->len;
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return op->len;
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}
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}
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fail:
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fail:
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info->memory_error_func (status, addr, info);
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info->memory_error_func (status, addr, info);
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return -1;
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return -1;
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}
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}
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