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/* Disassemble V850 instructions.
Copyright (C) 1996 Free Software Foundation, Inc.
This program 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 2 of the License, or
(at your option) any later version.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <stdio.h>
#include "ansidecl.h"
#include "opcode/v850.h"
#include "dis-asm.h"
static const char *const v850_reg_names[] =
{ "r0", "r1", "r2", "sp", "gp", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31" };
static const char *const v850_sreg_names[] =
{ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31" };
static const char *const v850_cc_names[] =
{ "v", "c/l", "z", "nh", "s/n", "t", "lt", "le",
"nv", "nc/nl", "nz", "h", "ns/p", "sa", "ge", "gt" };
int
print_insn_v850 (memaddr, info)
bfd_vma memaddr;
struct disassemble_info *info;
{
int status;
bfd_byte buffer[4];
unsigned long insn;
/* First figure out how big the opcode is. */
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
insn = bfd_getl16 (buffer);
/* If this is a 4 byte insn, read 4 bytes of stuff. */
if ((insn & 0x0600) == 0x0600)
{
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
insn = bfd_getl32 (buffer);
}
disassemble (insn, info);
/* Make sure we tell our caller how many bytes we consumed. */
if ((insn & 0x0600) == 0x0600)
return 4;
else
return 2;
}
disassemble (insn, info)
unsigned long insn;
struct disassemble_info *info;
{
struct v850_opcode *op = (struct v850_opcode *)v850_opcodes;
const struct v850_operand *operand;
int match = 0;
/* If this is a two byte insn, then mask off the high bits. */
if ((insn & 0x0600) != 0x0600)
insn &= 0xffff;
/* Find the opcode. */
while (op->name)
{
if ((op->mask & insn) == op->opcode)
{
const unsigned char *opindex_ptr;
match = 1;
(*info->fprintf_func) (info->stream, "%s\t", op->name);
/* Now print the operands. */
for (opindex_ptr = op->operands; *opindex_ptr != 0; opindex_ptr++)
{
unsigned long value;
operand = &v850_operands[*opindex_ptr];
if (operand->extract)
value = (operand->extract) (insn, 0);
else
value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
if ((operand->flags & V850_OPERAND_SIGNED) != 0)
value = ((signed long)(value << (32 - operand->bits))
>> (32 - operand->bits));
if ((operand->flags & V850_OPERAND_REG) != 0)
(*info->fprintf_func) (info->stream, "%s",
v850_reg_names[value]);
else if ((operand->flags & V850_OPERAND_SRG) != 0)
(*info->fprintf_func) (info->stream, "%s",
v850_sreg_names[value]);
else if ((operand->flags & V850_OPERAND_CC) != 0)
(*info->fprintf_func) (info->stream, "%s",
v850_cc_names[value]);
else if ((operand->flags & V850_OPERAND_EP) != 0)
(*info->fprintf_func) (info->stream, "ep");
else
(*info->fprintf_func) (info->stream, "%d", value);
}
/* All done. */
break;
}
op++;
}
if (!match)
{
if ((insn & 0x0600) != 0x0600)
(*info->fprintf_func) (info->stream, ".short\t0x%04x", insn);
else
(*info->fprintf_func) (info->stream, ".long\t0x%08x", insn);
}
}
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