mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-27 07:31:35 +00:00
388 lines
9.1 KiB
C
388 lines
9.1 KiB
C
/* Disassembler code for Renesas RX.
|
|
Copyright (C) 2008-2022 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 "libiberty.h"
|
|
#include "opintl.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", ".d", "<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 registers. */
|
|
"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", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", ""
|
|
};
|
|
|
|
static const char * double_register_names[] =
|
|
{
|
|
"dr0", "dr1", "dr2", "dr3", "dr4", "dr5", "dr6", "dr7",
|
|
"dr8", "dr9", "dr10", "dr11", "dr12", "dr13", "dr14", "dr15"
|
|
};
|
|
|
|
static const char * double_register_high_names[] =
|
|
{
|
|
"drh0", "drh1", "drh2", "drh3", "drh4", "drh5", "drh6", "drh7",
|
|
"drh8", "drh9", "drh10", "drh11", "drh12", "drh13", "drh14", "drh15"
|
|
};
|
|
|
|
static const char * double_register_low_names[] =
|
|
{
|
|
"drl0", "drl1", "drl2", "drl3", "drl4", "drl5", "drl6", "drl7",
|
|
"drl8", "drl9", "drl10", "drl11", "drl12", "drl13", "drl14", "drl15"
|
|
};
|
|
|
|
static const char * double_control_register_names[] =
|
|
{
|
|
"dpsw", "dcmr", "decnt", "depc"
|
|
};
|
|
|
|
static const char * double_condition_names[] =
|
|
{
|
|
"", "un", "eq", "", "lt", "", "le"
|
|
};
|
|
|
|
static inline const char *
|
|
get_register_name (unsigned int reg)
|
|
{
|
|
if (reg < ARRAY_SIZE (register_names))
|
|
return register_names[reg];
|
|
return _("<invalid register number>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_condition_name (unsigned int cond)
|
|
{
|
|
if (cond < ARRAY_SIZE (condition_names))
|
|
return condition_names[cond];
|
|
return _("<invalid condition code>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_flag_name (unsigned int flag)
|
|
{
|
|
if (flag < ARRAY_SIZE (flag_names))
|
|
return flag_names[flag];
|
|
return _("<invalid flag>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_double_register_name (unsigned int reg)
|
|
{
|
|
if (reg < ARRAY_SIZE (double_register_names))
|
|
return double_register_names[reg];
|
|
return _("<invalid register number>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_double_register_high_name (unsigned int reg)
|
|
{
|
|
if (reg < ARRAY_SIZE (double_register_high_names))
|
|
return double_register_high_names[reg];
|
|
return _("<invalid register number>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_double_register_low_name (unsigned int reg)
|
|
{
|
|
if (reg < ARRAY_SIZE (double_register_low_names))
|
|
return double_register_low_names[reg];
|
|
return _("<invalid register number>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_double_control_register_name (unsigned int reg)
|
|
{
|
|
if (reg < ARRAY_SIZE (double_control_register_names))
|
|
return double_control_register_names[reg];
|
|
return _("<invalid register number>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_double_condition_name (unsigned int cond)
|
|
{
|
|
if (cond < ARRAY_SIZE (double_condition_names))
|
|
return double_condition_names[cond];
|
|
return _("<invalid condition code>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_opsize_name (unsigned int opsize)
|
|
{
|
|
if (opsize < ARRAY_SIZE (opsize_names))
|
|
return opsize_names[opsize];
|
|
return _("<invalid opsize>");
|
|
}
|
|
|
|
static inline const char *
|
|
get_size_name (unsigned int size)
|
|
{
|
|
if (size < ARRAY_SIZE (size_names))
|
|
return size_names[size];
|
|
return _("<invalid size>");
|
|
}
|
|
|
|
|
|
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 = &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", get_opsize_name (opcode.size));
|
|
break;
|
|
|
|
case 'b':
|
|
s ++;
|
|
if (*s == 'f')
|
|
{
|
|
int imm = opcode.op[2].addend;
|
|
int slsb, dlsb, width;
|
|
|
|
dlsb = (imm >> 5) & 0x1f;
|
|
slsb = (imm & 0x1f);
|
|
slsb = (slsb >= 0x10?(slsb ^ 0x1f) + 1:slsb);
|
|
slsb = dlsb - slsb;
|
|
slsb = (slsb < 0?-slsb:slsb);
|
|
width = ((imm >> 10) & 0x1f) - dlsb;
|
|
PR (PS, "#%d, #%d, #%d, %s, %s",
|
|
slsb, dlsb, width,
|
|
get_register_name (opcode.op[1].reg),
|
|
get_register_name (opcode.op[0].reg));
|
|
}
|
|
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", get_size_name (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", get_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_Indirect:
|
|
PR (PS, "%d[%s]", oper->addend, get_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_Zero_Indirect:
|
|
PR (PS, "[%s]", get_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_Postinc:
|
|
PR (PS, "[%s+]", get_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_Predec:
|
|
PR (PS, "[-%s]", get_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_Condition:
|
|
PR (PS, "%s", get_condition_name (oper->reg));
|
|
break;
|
|
case RX_Operand_Flag:
|
|
PR (PS, "%s", get_flag_name (oper->reg));
|
|
break;
|
|
case RX_Operand_DoubleReg:
|
|
PR (PS, "%s", get_double_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_DoubleRegH:
|
|
PR (PS, "%s", get_double_register_high_name (oper->reg));
|
|
break;
|
|
case RX_Operand_DoubleRegL:
|
|
PR (PS, "%s", get_double_register_low_name (oper->reg));
|
|
break;
|
|
case RX_Operand_DoubleCReg:
|
|
PR (PS, "%s", get_double_control_register_name (oper->reg));
|
|
break;
|
|
case RX_Operand_DoubleCond:
|
|
PR (PS, "%s", get_double_condition_name (oper->reg));
|
|
break;
|
|
default:
|
|
PR (PS, "[???]");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|