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/* Disassembler code for Renesas RX.
Copyright (C) 2008-2017 Free Software Foundation, Inc.
Contributed by Red Hat.
Written by DJ Delorie.
This file is part of the GNU opcodes library.
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.
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 program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include <stdio.h>
#include "bfd.h"
#include "dis-asm.h"
#include "opcode/rx.h"
#include <setjmp.h>
typedef struct
{
bfd_vma pc;
disassemble_info * dis;
} RX_Data;
struct private
{
OPCODES_SIGJMP_BUF bailout;
};
static int
rx_get_byte (void * vdata)
{
bfd_byte buf[1];
RX_Data *rx_data = (RX_Data *) vdata;
int status;
status = rx_data->dis->read_memory_func (rx_data->pc,
buf,
1,
rx_data->dis);
if (status != 0)
{
struct private *priv = (struct private *) rx_data->dis->private_data;
rx_data->dis->memory_error_func (status, rx_data->pc,
rx_data->dis);
OPCODES_SIGLONGJMP (priv->bailout, 1);
}
rx_data->pc ++;
return buf[0];
}
static char const * size_names[RX_MAX_SIZE] =
{
"", ".b", ".ub", ".b", ".w", ".uw", ".w", ".a", ".l", "<error>"
};
static char const * opsize_names[RX_MAX_SIZE] =
{
"", ".b", ".b", ".b", ".w", ".w", ".w", ".a", ".l", "<error>"
};
static char const * register_names[] =
{
/* general registers */
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
/* control register */
"psw", "pc", "usp", "fpsw", NULL, NULL, NULL, NULL,
"bpsw", "bpc", "isp", "fintv", "intb", "extb", NULL, NULL,
"a0", "a1", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
static char const * condition_names[] =
{
/* condition codes */
"eq", "ne", "c", "nc", "gtu", "leu", "pz", "n",
"ge", "lt", "gt", "le", "o", "no", "<invalid>", "<invalid>"
};
static const char * flag_names[] =
{
"c", "z", "s", "o", "", "", "", "",
"", "", "", "", "", "", "", "",
"i", "u", "", "", "", "", "", ""
"", "", "", "", "", "", "", "",
};
int
print_insn_rx (bfd_vma addr, disassemble_info * dis)
{
int rv;
RX_Data rx_data;
RX_Opcode_Decoded opcode;
const char * s;
struct private priv;
dis->private_data = (PTR) &priv;
rx_data.pc = addr;
rx_data.dis = dis;
if (OPCODES_SIGSETJMP (priv.bailout) != 0)
{
/* Error return. */
return -1;
}
rv = rx_decode_opcode (addr, &opcode, rx_get_byte, &rx_data);
dis->bytes_per_line = 10;
#define PR (dis->fprintf_func)
#define PS (dis->stream)
#define PC(c) PR (PS, "%c", c)
/* Detect illegal instructions. */
if (opcode.op[0].size == RX_Bad_Size
|| register_names [opcode.op[0].reg] == NULL
|| register_names [opcode.op[1].reg] == NULL
|| register_names [opcode.op[2].reg] == NULL)
{
bfd_byte buf[10];
int i;
PR (PS, ".byte ");
rx_data.dis->read_memory_func (rx_data.pc - rv, buf, rv, rx_data.dis);
for (i = 0 ; i < rv; i++)
PR (PS, "0x%02x ", buf[i]);
return rv;
}
for (s = opcode.syntax; *s; s++)
{
if (*s != '%')
{
PC (*s);
}
else
{
RX_Opcode_Operand * oper;
int do_size = 0;
int do_hex = 0;
int do_addr = 0;
s ++;
if (*s == 'S')
{
do_size = 1;
s++;
}
if (*s == 'x')
{
do_hex = 1;
s++;
}
if (*s == 'a')
{
do_addr = 1;
s++;
}
switch (*s)
{
case '%':
PC ('%');
break;
case 's':
PR (PS, "%s", opsize_names[opcode.size]);
break;
case '0':
case '1':
case '2':
oper = opcode.op + *s - '0';
if (do_size)
{
if (oper->type == RX_Operand_Indirect || oper->type == RX_Operand_Zero_Indirect)
PR (PS, "%s", size_names[oper->size]);
}
else
switch (oper->type)
{
case RX_Operand_Immediate:
if (do_addr)
dis->print_address_func (oper->addend, dis);
else if (do_hex
|| oper->addend > 999
|| oper->addend < -999)
PR (PS, "%#x", oper->addend);
else
PR (PS, "%d", oper->addend);
break;
case RX_Operand_Register:
case RX_Operand_TwoReg:
PR (PS, "%s", register_names[oper->reg]);
break;
case RX_Operand_Indirect:
PR (PS, "%d[%s]", oper->addend, register_names[oper->reg]);
break;
case RX_Operand_Zero_Indirect:
PR (PS, "[%s]", register_names[oper->reg]);
break;
case RX_Operand_Postinc:
PR (PS, "[%s+]", register_names[oper->reg]);
break;
case RX_Operand_Predec:
PR (PS, "[-%s]", register_names[oper->reg]);
break;
case RX_Operand_Condition:
PR (PS, "%s", condition_names[oper->reg]);
break;
case RX_Operand_Flag:
PR (PS, "%s", flag_names[oper->reg]);
break;
default:
PR (PS, "[???]");
break;
}
}
}
}
return rv;
}
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