1999-09-04 19:14:37 +02:00
|
|
|
/* pj-dis.c -- Disassemble picoJava instructions.
|
2015-01-01 15:15:26 +01:00
|
|
|
Copyright (C) 1999-2015 Free Software Foundation, Inc.
|
1999-09-04 19:14:37 +02:00
|
|
|
Contributed by Steve Chamberlain, of Transmeta (sac@pobox.com).
|
|
|
|
|
2007-07-05 11:49:03 +02:00
|
|
|
This file is part of the GNU opcodes library.
|
|
|
|
|
|
|
|
This library is free software; you can redistribute it and/or modify
|
2005-07-01 13:16:33 +02:00
|
|
|
it under the terms of the GNU General Public License as published by
|
2007-07-05 11:49:03 +02:00
|
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
|
|
any later version.
|
1999-09-04 19:14:37 +02:00
|
|
|
|
2007-07-05 11:49:03 +02:00
|
|
|
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.
|
1999-09-04 19:14:37 +02:00
|
|
|
|
2005-07-01 13:16:33 +02:00
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with this program; if not, write to the Free Software
|
|
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
|
|
MA 02110-1301, USA. */
|
1999-09-04 19:14:37 +02:00
|
|
|
|
2000-04-14 06:16:58 +02:00
|
|
|
#include "sysdep.h"
|
2012-05-17 17:13:28 +02:00
|
|
|
#include <stdio.h>
|
1999-09-04 19:14:37 +02:00
|
|
|
#include "opcode/pj.h"
|
|
|
|
#include "dis-asm.h"
|
|
|
|
|
|
|
|
extern const pj_opc_info_t pj_opc_info[512];
|
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
static int
|
2005-07-01 13:16:33 +02:00
|
|
|
get_int (bfd_vma memaddr, int *iptr, struct disassemble_info *info)
|
1999-09-04 19:14:37 +02:00
|
|
|
{
|
|
|
|
unsigned char ival[4];
|
|
|
|
int status = info->read_memory_func (memaddr, ival, 4, info);
|
|
|
|
|
2001-08-13 10:09:58 +02:00
|
|
|
*iptr = (ival[0] << 24)
|
|
|
|
| (ival[1] << 16)
|
|
|
|
| (ival[2] << 8)
|
|
|
|
| (ival[3] << 0);
|
1999-09-04 19:14:37 +02:00
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2005-07-01 13:16:33 +02:00
|
|
|
print_insn_pj (bfd_vma addr, struct disassemble_info *info)
|
1999-09-04 19:14:37 +02:00
|
|
|
{
|
|
|
|
fprintf_ftype fprintf_fn = info->fprintf_func;
|
|
|
|
void *stream = info->stream;
|
|
|
|
unsigned char opcode;
|
|
|
|
int status;
|
|
|
|
|
|
|
|
if ((status = info->read_memory_func (addr, &opcode, 1, info)))
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
if (opcode == 0xff)
|
|
|
|
{
|
|
|
|
unsigned char byte_2;
|
2005-07-01 13:16:33 +02:00
|
|
|
|
1999-09-04 19:14:37 +02:00
|
|
|
if ((status = info->read_memory_func (addr + 1, &byte_2, 1, info)))
|
|
|
|
goto fail;
|
2002-12-12 22:52:06 +01:00
|
|
|
fprintf_fn (stream, "%s\t", pj_opc_info[opcode + byte_2].u.name);
|
1999-09-04 19:14:37 +02:00
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char *sep = "\t";
|
|
|
|
int insn_start = addr;
|
|
|
|
const pj_opc_info_t *op = &pj_opc_info[opcode];
|
|
|
|
int a;
|
2005-07-01 13:16:33 +02:00
|
|
|
|
1999-09-04 19:14:37 +02:00
|
|
|
addr++;
|
2002-12-12 22:52:06 +01:00
|
|
|
fprintf_fn (stream, "%s", op->u.name);
|
1999-09-04 19:14:37 +02:00
|
|
|
|
|
|
|
/* The tableswitch instruction is followed by the default
|
2001-08-13 10:09:58 +02:00
|
|
|
address, low value, high value and the destinations. */
|
1999-09-04 19:14:37 +02:00
|
|
|
|
2002-12-12 22:52:06 +01:00
|
|
|
if (strcmp (op->u.name, "tableswitch") == 0)
|
1999-09-04 19:14:37 +02:00
|
|
|
{
|
|
|
|
int lowval;
|
|
|
|
int highval;
|
|
|
|
int val;
|
|
|
|
|
|
|
|
addr = (addr + 3) & ~3;
|
|
|
|
if ((status = get_int (addr, &val, info)))
|
|
|
|
goto fail;
|
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
fprintf_fn (stream, " default: ");
|
1999-09-04 19:14:37 +02:00
|
|
|
(*info->print_address_func) (val + insn_start, info);
|
|
|
|
addr += 4;
|
|
|
|
|
|
|
|
if ((status = get_int (addr, &lowval, info)))
|
|
|
|
goto fail;
|
|
|
|
addr += 4;
|
|
|
|
|
|
|
|
if ((status = get_int (addr, &highval, info)))
|
|
|
|
goto fail;
|
|
|
|
addr += 4;
|
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
while (lowval <= highval)
|
|
|
|
{
|
|
|
|
if ((status = get_int (addr, &val, info)))
|
|
|
|
goto fail;
|
|
|
|
fprintf_fn (stream, " %d:[", lowval);
|
|
|
|
(*info->print_address_func) (val + insn_start, info);
|
|
|
|
fprintf_fn (stream, " ]");
|
|
|
|
addr += 4;
|
|
|
|
lowval++;
|
|
|
|
}
|
1999-09-04 19:14:37 +02:00
|
|
|
return addr - insn_start;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The lookupswitch instruction is followed by the default
|
|
|
|
address, element count and pairs of values and
|
2001-08-13 10:09:58 +02:00
|
|
|
addresses. */
|
2002-12-12 22:52:06 +01:00
|
|
|
if (strcmp (op->u.name, "lookupswitch") == 0)
|
1999-09-04 19:14:37 +02:00
|
|
|
{
|
|
|
|
int count;
|
|
|
|
int val;
|
|
|
|
|
|
|
|
addr = (addr + 3) & ~3;
|
|
|
|
if ((status = get_int (addr, &val, info)))
|
|
|
|
goto fail;
|
|
|
|
addr += 4;
|
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
fprintf_fn (stream, " default: ");
|
1999-09-04 19:14:37 +02:00
|
|
|
(*info->print_address_func) (val + insn_start, info);
|
|
|
|
|
|
|
|
if ((status = get_int (addr, &count, info)))
|
|
|
|
goto fail;
|
|
|
|
addr += 4;
|
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
while (count--)
|
|
|
|
{
|
|
|
|
if ((status = get_int (addr, &val, info)))
|
|
|
|
goto fail;
|
|
|
|
addr += 4;
|
|
|
|
fprintf_fn (stream, " %d:[", val);
|
1999-09-04 19:14:37 +02:00
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
if ((status = get_int (addr, &val, info)))
|
|
|
|
goto fail;
|
|
|
|
addr += 4;
|
1999-09-04 19:14:37 +02:00
|
|
|
|
2001-07-24 02:48:04 +02:00
|
|
|
(*info->print_address_func) (val + insn_start, info);
|
|
|
|
fprintf_fn (stream, " ]");
|
|
|
|
}
|
1999-09-04 19:14:37 +02:00
|
|
|
return addr - insn_start;
|
|
|
|
}
|
2005-07-01 13:16:33 +02:00
|
|
|
|
1999-09-04 19:14:37 +02:00
|
|
|
for (a = 0; op->arg[a]; a++)
|
|
|
|
{
|
|
|
|
unsigned char data[4];
|
|
|
|
int val = 0;
|
|
|
|
int i;
|
|
|
|
int size = ASIZE (op->arg[a]);
|
|
|
|
|
|
|
|
if ((status = info->read_memory_func (addr, data, size, info)))
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
val = (UNS (op->arg[0]) || ((data[0] & 0x80) == 0)) ? 0 : -1;
|
|
|
|
|
|
|
|
for (i = 0; i < size; i++)
|
|
|
|
val = (val << 8) | (data[i] & 0xff);
|
|
|
|
|
|
|
|
if (PCREL (op->arg[a]))
|
|
|
|
(*info->print_address_func) (val + insn_start, info);
|
|
|
|
else
|
|
|
|
fprintf_fn (stream, "%s%d", sep, val);
|
|
|
|
|
|
|
|
sep = ",";
|
|
|
|
addr += size;
|
|
|
|
}
|
|
|
|
return op->len;
|
|
|
|
}
|
|
|
|
|
|
|
|
fail:
|
|
|
|
info->memory_error_func (status, addr, info);
|
|
|
|
return -1;
|
|
|
|
}
|