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binutils-gdb/opcodes/s12z-dis.c

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/* s12z-dis.c -- Freescale S12Z disassembly
Copyright (C) 2018-2019 Free Software Foundation, Inc.
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_stdint.h"
#include <stdbool.h>
#include <assert.h>
#include "opcode/s12z.h"
#include "bfd.h"
#include "dis-asm.h"
#include "disassemble.h"
static int
read_memory (bfd_vma memaddr, bfd_byte* buffer, int size,
struct disassemble_info* info)
{
int status = (*info->read_memory_func) (memaddr, buffer, size, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
return 0;
}
typedef int (* insn_bytes_f) (bfd_vma memaddr,
struct disassemble_info* info);
typedef void (*operands_f) (bfd_vma memaddr, struct disassemble_info* info);
enum OPR_MODE
{
OPR_IMMe4,
OPR_REG,
OPR_OFXYS,
OPR_XY_PRE_INC,
OPR_XY_POST_INC,
OPR_XY_PRE_DEC,
OPR_XY_POST_DEC,
OPR_S_PRE_DEC,
OPR_S_POST_INC,
OPR_REG_DIRECT,
OPR_REG_INDIRECT,
OPR_IDX_DIRECT,
OPR_IDX_INDIRECT,
OPR_EXT1,
OPR_IDX2_REG,
OPR_IDX3_DIRECT,
OPR_IDX3_INDIRECT,
OPR_EXT18,
OPR_IDX3_DIRECT_REG,
OPR_EXT3_DIRECT,
OPR_EXT3_INDIRECT
};
struct opr_pb
{
uint8_t mask;
uint8_t value;
int n_operands;
enum OPR_MODE mode;
};
static const struct opr_pb opr_pb[] = {
{0xF0, 0x70, 1, OPR_IMMe4},
{0xF8, 0xB8, 1, OPR_REG},
{0xC0, 0x40, 1, OPR_OFXYS},
{0xEF, 0xE3, 1, OPR_XY_PRE_INC},
{0xEF, 0xE7, 1, OPR_XY_POST_INC},
{0xEF, 0xC3, 1, OPR_XY_PRE_DEC},
{0xEF, 0xC7, 1, OPR_XY_POST_DEC},
{0xFF, 0xFB, 1, OPR_S_PRE_DEC},
{0xFF, 0xFF, 1, OPR_S_POST_INC},
{0xC8, 0x88, 1, OPR_REG_DIRECT},
{0xE8, 0xC8, 1, OPR_REG_INDIRECT},
{0xCE, 0xC0, 2, OPR_IDX_DIRECT},
{0xCE, 0xC4, 2, OPR_IDX_INDIRECT},
{0xC0, 0x00, 2, OPR_EXT1},
{0xC8, 0x80, 3, OPR_IDX2_REG},
{0xFA, 0xF8, 3, OPR_EXT18},
{0xCF, 0xC2, 4, OPR_IDX3_DIRECT},
{0xCF, 0xC6, 4, OPR_IDX3_INDIRECT},
{0xF8, 0xE8, 4, OPR_IDX3_DIRECT_REG},
{0xFF, 0xFA, 4, OPR_EXT3_DIRECT},
{0xFF, 0xFE, 4, OPR_EXT3_INDIRECT},
};
/* Return the number of bytes in a OPR operand, including the XB postbyte.
It does not include any preceeding opcodes. */
static int
opr_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte xb;
int status = read_memory (memaddr, &xb, 1, info);
if (status < 0)
return status;
size_t i;
for (i = 0; i < sizeof (opr_pb) / sizeof (opr_pb[0]); ++i)
{
const struct opr_pb *pb = opr_pb + i;
if ((xb & pb->mask) == pb->value)
{
return pb->n_operands;
}
}
return 1;
}
static int
opr_n_bytes_p1 (bfd_vma memaddr, struct disassemble_info* info)
{
return 1 + opr_n_bytes (memaddr, info);
}
static int
opr_n_bytes2 (bfd_vma memaddr, struct disassemble_info* info)
{
int s = opr_n_bytes (memaddr, info);
s += opr_n_bytes (memaddr + s, info);
return s + 1;
}
enum BB_MODE
{
BB_REG_REG_REG,
BB_REG_REG_IMM,
BB_REG_OPR_REG,
BB_OPR_REG_REG,
BB_REG_OPR_IMM,
BB_OPR_REG_IMM
};
struct opr_bb
{
uint8_t mask;
uint8_t value;
int n_operands;
bool opr;
enum BB_MODE mode;
};
static const struct opr_bb bb_modes[] =
{
{0x60, 0x00, 2, false, BB_REG_REG_REG},
{0x60, 0x20, 3, false, BB_REG_REG_IMM},
{0x70, 0x40, 2, true, BB_REG_OPR_REG},
{0x70, 0x50, 2, true, BB_OPR_REG_REG},
{0x70, 0x60, 3, true, BB_REG_OPR_IMM},
{0x70, 0x70, 3, true, BB_OPR_REG_IMM}
};
static int
bfextins_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte bb;
int status = read_memory (memaddr, &bb, 1, info);
if (status < 0)
return status;
size_t i;
const struct opr_bb *bbs = 0;
for (i = 0; i < sizeof (bb_modes) / sizeof (bb_modes[0]); ++i)
{
bbs = bb_modes + i;
if ((bb & bbs->mask) == bbs->value)
{
break;
}
}
int n = bbs->n_operands;
if (bbs->opr)
n += opr_n_bytes (memaddr + n - 1, info);
return n;
}
static int
single (bfd_vma memaddr ATTRIBUTE_UNUSED,
struct disassemble_info* info ATTRIBUTE_UNUSED)
{
return 1;
}
static int
two (bfd_vma memaddr ATTRIBUTE_UNUSED,
struct disassemble_info* info ATTRIBUTE_UNUSED)
{
return 2;
}
static int
three (bfd_vma memaddr ATTRIBUTE_UNUSED,
struct disassemble_info* info ATTRIBUTE_UNUSED)
{
return 3;
}
static int
four (bfd_vma memaddr ATTRIBUTE_UNUSED,
struct disassemble_info* info ATTRIBUTE_UNUSED)
{
return 4;
}
static int
five (bfd_vma memaddr ATTRIBUTE_UNUSED,
struct disassemble_info* info ATTRIBUTE_UNUSED)
{
return 5;
}
static int
pcrel_15bit (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr, &byte, 1, info);
if (status < 0)
return status;
return (byte & 0x80) ? 3 : 2;
}
static void
operand_separator (struct disassemble_info *info)
{
if ((info->flags & 0x2))
{
(*info->fprintf_func) (info->stream, ", ");
}
else
{
(*info->fprintf_func) (info->stream, " ");
}
info->flags |= 0x2;
}
static void
imm1 (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr, &byte, 1, info);
if (status < 0)
return;
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d", byte);
}
static void
trap_decode (bfd_vma memaddr, struct disassemble_info* info)
{
imm1 (memaddr - 1, info);
}
const struct reg registers[S12Z_N_REGISTERS] =
{
{"d2", 2},
{"d3", 2},
{"d4", 2},
{"d5", 2},
{"d0", 1},
{"d1", 1},
{"d6", 4},
{"d7", 4},
{"x", 3},
{"y", 3},
{"s", 3},
{"p", 3},
{"cch", 1},
{"ccl", 1},
{"ccw", 2}
};
static char *
xys_from_postbyte (uint8_t postbyte)
{
char *reg = "?";
switch ((postbyte & 0x30) >> 4)
{
case 0:
reg = "x";
break;
case 1:
reg = "y";
break;
case 2:
reg = "s";
break;
default:
reg = "?";
break;
}
return reg;
}
static char *
xysp_from_postbyte (uint8_t postbyte)
{
char *reg = "?";
switch ((postbyte & 0x30) >> 4)
{
case 0:
reg = "x";
break;
case 1:
reg = "y";
break;
case 2:
reg = "s";
break;
default:
reg = "p";
break;
}
return reg;
}
/* Render the symbol name whose value is ADDR or the adddress itself if there is
no symbol. */
static void
decode_possible_symbol (bfd_vma addr, struct disassemble_info *info)
{
if (!info->symbol_at_address_func (addr, info))
{
(*info->fprintf_func) (info->stream, "%" BFD_VMA_FMT "d", addr);
}
else
{
asymbol *sym = NULL;
int j;
for (j = 0; j < info->symtab_size; ++j)
{
sym = info->symtab[j];
if (bfd_asymbol_value (sym) == addr)
{
break;
}
}
if (j < info->symtab_size)
(*info->fprintf_func) (info->stream, "%s", bfd_asymbol_name (sym));
else
(*info->fprintf_func) (info->stream, "%" BFD_VMA_FMT "d", addr);
}
}
static void ld_18bit_decode (bfd_vma memaddr, struct disassemble_info* info);
static void
ext24_decode (bfd_vma memaddr, struct disassemble_info* info)
{
uint8_t buffer[3];
int status = read_memory (memaddr, buffer, 3, info);
if (status < 0)
return;
int i;
uint32_t addr = 0;
for (i = 0; i < 3; ++i)
{
addr <<= 8;
addr |= buffer[i];
}
operand_separator (info);
decode_possible_symbol (addr, info);
}
static uint32_t
decode_signed_value (bfd_vma memaddr, struct disassemble_info* info, short size)
{
assert (size >0);
assert (size <= 4);
bfd_byte buffer[4];
if (0 > read_memory (memaddr, buffer, size, info))
{
return 0;
}
int i;
uint32_t value = 0;
for (i = 0; i < size; ++i)
{
value |= buffer[i] << (8 * (size - i - 1));
}
if (buffer[0] & 0x80)
{
/* Deal with negative values */
value -= 0x1UL << (size * 8);
}
return value;
}
static void
opr_decode (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte postbyte;
int status = read_memory (memaddr, &postbyte, 1, info);
if (status < 0)
return;
enum OPR_MODE mode = -1;
size_t i;
for (i = 0; i < sizeof (opr_pb) / sizeof (opr_pb[0]); ++i)
{
const struct opr_pb *pb = opr_pb + i;
if ((postbyte & pb->mask) == pb->value)
{
mode = pb->mode;
break;
}
}
operand_separator (info);
switch (mode)
{
case OPR_IMMe4:
{
int n;
uint8_t x = (postbyte & 0x0F);
if (x == 0)
n = -1;
else
n = x;
(*info->fprintf_func) (info->stream, "#%d", n);
break;
}
case OPR_REG:
{
uint8_t x = (postbyte & 0x07);
(*info->fprintf_func) (info->stream, "%s", registers[x].name);
break;
}
case OPR_OFXYS:
{
const char *reg = xys_from_postbyte (postbyte);
(*info->fprintf_func) (info->stream, "(%d,%s)", postbyte & 0x0F, reg);
break;
}
case OPR_REG_DIRECT:
{
(*info->fprintf_func) (info->stream, "(%s,%s)", registers[postbyte & 0x07].name,
xys_from_postbyte (postbyte));
break;
}
case OPR_REG_INDIRECT:
{
(*info->fprintf_func) (info->stream, "[%s,%s]", registers[postbyte & 0x07].name,
(postbyte & 0x10) ? "y": "x");
break;
}
case OPR_IDX_INDIRECT:
{
uint8_t x1;
read_memory (memaddr + 1, &x1, 1, info);
int idx = x1;
if (postbyte & 0x01)
{
/* Deal with negative values */
idx -= 0x1UL << 8;
}
(*info->fprintf_func) (info->stream, "[%d,%s]", idx,
xysp_from_postbyte (postbyte));
break;
}
case OPR_IDX3_DIRECT:
{
uint8_t x[3];
read_memory (memaddr + 1, x, 3, info);
int idx = x[0] << 16 | x[1] << 8 | x[2];
if (x[0] & 0x80)
{
/* Deal with negative values */
idx -= 0x1UL << 24;
}
(*info->fprintf_func) (info->stream, "(%d,%s)", idx,
xysp_from_postbyte (postbyte));
break;
}
case OPR_IDX3_DIRECT_REG:
{
uint8_t x[3];
read_memory (memaddr + 1, x, 3, info);
int idx = x[0] << 16 | x[1] << 8 | x[2];
if (x[0] & 0x80)
{
/* Deal with negative values */
idx -= 0x1UL << 24;
}
(*info->fprintf_func) (info->stream, "(%d,%s)", idx,
registers[postbyte & 0x07].name);
break;
}
case OPR_IDX3_INDIRECT:
{
uint8_t x[3];
read_memory (memaddr + 1, x, 3, info);
int idx = x[0] << 16 | x[1] << 8 | x[2];
if (x[0] & 0x80)
{
/* Deal with negative values */
idx -= 0x1UL << 24;
}
(*info->fprintf_func) (info->stream, "[%d,%s]", idx,
xysp_from_postbyte (postbyte));
break;
}
case OPR_IDX_DIRECT:
{
uint8_t x1;
read_memory (memaddr + 1, &x1, 1, info);
int idx = x1;
if (postbyte & 0x01)
{
/* Deal with negative values */
idx -= 0x1UL << 8;
}
(*info->fprintf_func) (info->stream, "(%d,%s)", idx,
xysp_from_postbyte (postbyte));
break;
}
case OPR_IDX2_REG:
{
uint8_t x[2];
read_memory (memaddr + 1, x, 2, info);
uint32_t offset = x[1] | x[0] << 8 ;
offset |= (postbyte & 0x30) << 12;
(*info->fprintf_func) (info->stream, "(%d,%s)", offset,
registers[postbyte & 0x07].name);
break;
}
case OPR_XY_PRE_INC:
{
(*info->fprintf_func) (info->stream, "(+%s)",
(postbyte & 0x10) ? "y": "x");
break;
}
case OPR_XY_POST_INC:
{
(*info->fprintf_func) (info->stream, "(%s+)",
(postbyte & 0x10) ? "y": "x");
break;
}
case OPR_XY_PRE_DEC:
{
(*info->fprintf_func) (info->stream, "(-%s)",
(postbyte & 0x10) ? "y": "x");
break;
}
case OPR_XY_POST_DEC:
{
(*info->fprintf_func) (info->stream, "(%s-)",
(postbyte & 0x10) ? "y": "x");
break;
}
case OPR_S_PRE_DEC:
{
(*info->fprintf_func) (info->stream, "(-s)");
break;
}
case OPR_S_POST_INC:
{
(*info->fprintf_func) (info->stream, "(s+)");
break;
}
case OPR_EXT18:
{
const size_t size = 2;
bfd_byte buffer[4];
status = read_memory (memaddr + 1, buffer, size, info);
if (status < 0)
return;
uint32_t ext18 = 0;
for (i = 0; i < size; ++i)
{
ext18 <<= 8;
ext18 |= buffer[i];
}
ext18 |= (postbyte & 0x01) << 16;
ext18 |= (postbyte & 0x04) << 15;
decode_possible_symbol (ext18, info);
break;
}
case OPR_EXT1:
{
uint8_t x1 = 0;
read_memory (memaddr + 1, &x1, 1, info);
int16_t addr;
addr = x1;
addr |= (postbyte & 0x3f) << 8;
decode_possible_symbol (addr, info);
break;
}
case OPR_EXT3_DIRECT:
{
const size_t size = 3;
bfd_byte buffer[4];
status = read_memory (memaddr + 1, buffer, size, info);
if (status < 0)
return;
uint32_t ext24 = 0;
for (i = 0; i < size; ++i)
{
ext24 |= buffer[i] << (8 * (size - i - 1));
}
decode_possible_symbol (ext24, info);
break;
}
case OPR_EXT3_INDIRECT:
{
const size_t size = 3;
bfd_byte buffer[4];
status = read_memory (memaddr + 1, buffer, size, info);
if (status < 0)
return;
uint32_t ext24 = 0;
for (i = 0; i < size; ++i)
{
ext24 |= buffer[i] << (8 * (size - i - 1));
}
(*info->fprintf_func) (info->stream, "[%d]", ext24);
break;
}
default:
(*info->fprintf_func) (info->stream, "Unknown OPR mode #0x%x (%d)", postbyte, mode);
}
}
static void
opr_decode2 (bfd_vma memaddr, struct disassemble_info* info)
{
int n = opr_n_bytes (memaddr, info);
opr_decode (memaddr, info);
opr_decode (memaddr + n, info);
}
static void
imm1234 (bfd_vma memaddr, struct disassemble_info* info, int base)
{
bfd_byte opcode;
int status = read_memory (memaddr - 1, &opcode, 1, info);
if (status < 0)
return;
opcode -= base;
int size = registers[opcode & 0xF].bytes;
uint32_t imm = decode_signed_value (memaddr, info, size);
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d", imm);
}
/* Special case of LD and CMP with register S and IMM operand */
static void
reg_s_imm (bfd_vma memaddr, struct disassemble_info* info)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "s");
uint32_t imm = decode_signed_value (memaddr, info, 3);
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d", imm);
}
/* Special case of LD, CMP and ST with register S and OPR operand */
static void
reg_s_opr (bfd_vma memaddr, struct disassemble_info* info)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "s");
opr_decode (memaddr, info);
}
static void
imm1234_8base (bfd_vma memaddr, struct disassemble_info* info)
{
imm1234 (memaddr, info, 8);
}
static void
imm1234_0base (bfd_vma memaddr, struct disassemble_info* info)
{
imm1234 (memaddr, info, 0);
}
static void
tfr (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr, &byte, 1, info);
if (status < 0)
return;
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s, %s",
registers[byte >> 4].name,
registers[byte & 0xF].name);
}
static void
reg (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return;
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[byte & 0x07].name);
}
static void
reg_xy (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return;
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", (byte & 0x01) ? "y" : "x");
}
static void
lea_reg_xys_opr (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return;
char *reg_xys = NULL;
switch (byte & 0x03)
{
case 0x00:
reg_xys = "x";
break;
case 0x01:
reg_xys = "y";
break;
case 0x02:
reg_xys = "s";
break;
}
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", reg_xys);
opr_decode (memaddr, info);
}
static void
lea_reg_xys (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return;
char *reg_xys = NULL;
switch (byte & 0x03)
{
case 0x00:
reg_xys = "x";
break;
case 0x01:
reg_xys = "y";
break;
case 0x02:
reg_xys = "s";
break;
}
status = read_memory (memaddr, &byte, 1, info);
if (status < 0)
return;
int8_t v = byte;
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s, (%d,%s)", reg_xys, v, reg_xys);
}
/* PC Relative offsets of size 15 or 7 bits */
static void
rel_15_7 (bfd_vma memaddr, struct disassemble_info* info, int offset)
{
bfd_byte upper;
int status = read_memory (memaddr, &upper, 1, info);
if (status < 0)
return;
bool rel_size = (upper & 0x80);
int16_t addr = upper;
if (rel_size)
{
/* 15 bits. Get the next byte */
bfd_byte lower;
status = read_memory (memaddr + 1, &lower, 1, info);
if (status < 0)
return;
addr <<= 8;
addr |= lower;
addr &= 0x7FFF;
bool negative = (addr & 0x4000);
addr &= 0x3FFF;
if (negative)
addr = addr - 0x4000;
}
else
{
/* 7 bits. */
bool negative = (addr & 0x40);
addr &= 0x3F;
if (negative)
addr = addr - 0x40;
}
operand_separator (info);
if (!info->symbol_at_address_func (addr + memaddr - offset, info))
{
(*info->fprintf_func) (info->stream, "*%+d", addr);
}
else
{
asymbol *sym = NULL;
int i;
for (i = 0; i < info->symtab_size; ++i)
{
sym = info->symtab[i];
if (bfd_asymbol_value (sym) == addr + memaddr - offset)
{
break;
}
}
if (i < info->symtab_size)
(*info->fprintf_func) (info->stream, "%s", bfd_asymbol_name (sym));
else
(*info->fprintf_func) (info->stream, "*%+d", addr);
}
}
/* PC Relative offsets of size 15 or 7 bits */
static void
decode_rel_15_7 (bfd_vma memaddr, struct disassemble_info* info)
{
rel_15_7 (memaddr, info, 1);
}
struct opcode
{
const char *mnemonic;
insn_bytes_f insn_bytes;
operands_f operands;
operands_f operands2;
};
static int shift_n_bytes (bfd_vma memaddr, struct disassemble_info* info);
static int mov_imm_opr_n_bytes (bfd_vma memaddr, struct disassemble_info* info);
static int loop_prim_n_bytes (bfd_vma memaddr, struct disassemble_info* info);
static void mov_imm_opr (bfd_vma memaddr, struct disassemble_info* info);
static void bm_rel_decode (bfd_vma memaddr, struct disassemble_info* info);
static int bm_rel_n_bytes (bfd_vma memaddr, struct disassemble_info* info);
static int mul_n_bytes (bfd_vma memaddr, struct disassemble_info* info);
static void mul_decode (bfd_vma memaddr, struct disassemble_info* info);
static int bm_n_bytes (bfd_vma memaddr, struct disassemble_info* info);
static void bm_decode (bfd_vma memaddr, struct disassemble_info* info);
static void
cmp_xy (bfd_vma memaddr ATTRIBUTE_UNUSED, struct disassemble_info* info)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "x, y");
}
static void
sub_d6_x_y (bfd_vma memaddr ATTRIBUTE_UNUSED, struct disassemble_info* info)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "d6, x, y");
}
static void
sub_d6_y_x (bfd_vma memaddr ATTRIBUTE_UNUSED, struct disassemble_info* info)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "d6, y, x");
}
static const char shift_size_table[] = {
'b', 'w', 'p', 'l'
};
static const struct opcode page2[] =
{
[0x00] = {"ld", opr_n_bytes_p1, 0, reg_s_opr},
[0x01] = {"st", opr_n_bytes_p1, 0, reg_s_opr},
[0x02] = {"cmp", opr_n_bytes_p1, 0, reg_s_opr},
[0x03] = {"ld", four, 0, reg_s_imm},
[0x04] = {"cmp", four, 0, reg_s_imm},
[0x05] = {"stop", single, 0, 0},
[0x06] = {"wai", single, 0, 0},
[0x07] = {"sys", single, 0, 0},
[0x08] = {NULL, bfextins_n_bytes, 0, 0}, /* BFEXT / BFINS */
[0x09] = {NULL, bfextins_n_bytes, 0, 0},
[0x0a] = {NULL, bfextins_n_bytes, 0, 0},
[0x0b] = {NULL, bfextins_n_bytes, 0, 0},
[0x0c] = {NULL, bfextins_n_bytes, 0, 0},
[0x0d] = {NULL, bfextins_n_bytes, 0, 0},
[0x0e] = {NULL, bfextins_n_bytes, 0, 0},
[0x0f] = {NULL, bfextins_n_bytes, 0, 0},
[0x10] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x11] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x12] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x13] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x14] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x15] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x16] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x17] = {"minu", opr_n_bytes_p1, reg, opr_decode},
[0x18] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x19] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x1a] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x1b] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x1c] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x1d] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x1e] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x1f] = {"maxu", opr_n_bytes_p1, reg, opr_decode},
[0x20] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x21] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x22] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x23] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x24] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x25] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x26] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x27] = {"mins", opr_n_bytes_p1, reg, opr_decode},
[0x28] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x29] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x2a] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x2b] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x2c] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x2d] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x2e] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x2f] = {"maxs", opr_n_bytes_p1, reg, opr_decode},
[0x30] = {"div", mul_n_bytes, mul_decode, 0},
[0x31] = {"div", mul_n_bytes, mul_decode, 0},
[0x32] = {"div", mul_n_bytes, mul_decode, 0},
[0x33] = {"div", mul_n_bytes, mul_decode, 0},
[0x34] = {"div", mul_n_bytes, mul_decode, 0},
[0x35] = {"div", mul_n_bytes, mul_decode, 0},
[0x36] = {"div", mul_n_bytes, mul_decode, 0},
[0x37] = {"div", mul_n_bytes, mul_decode, 0},
[0x38] = {"mod", mul_n_bytes, mul_decode, 0},
[0x39] = {"mod", mul_n_bytes, mul_decode, 0},
[0x3a] = {"mod", mul_n_bytes, mul_decode, 0},
[0x3b] = {"mod", mul_n_bytes, mul_decode, 0},
[0x3c] = {"mod", mul_n_bytes, mul_decode, 0},
[0x3d] = {"mod", mul_n_bytes, mul_decode, 0},
[0x3e] = {"mod", mul_n_bytes, mul_decode, 0},
[0x3f] = {"mod", mul_n_bytes, mul_decode, 0},
[0x40] = {"abs", single, reg, 0},
[0x41] = {"abs", single, reg, 0},
[0x42] = {"abs", single, reg, 0},
[0x43] = {"abs", single, reg, 0},
[0x44] = {"abs", single, reg, 0},
[0x45] = {"abs", single, reg, 0},
[0x46] = {"abs", single, reg, 0},
[0x47] = {"abs", single, reg, 0},
[0x48] = {"mac", mul_n_bytes, mul_decode, 0},
[0x49] = {"mac", mul_n_bytes, mul_decode, 0},
[0x4a] = {"mac", mul_n_bytes, mul_decode, 0},
[0x4b] = {"mac", mul_n_bytes, mul_decode, 0},
[0x4c] = {"mac", mul_n_bytes, mul_decode, 0},
[0x4d] = {"mac", mul_n_bytes, mul_decode, 0},
[0x4e] = {"mac", mul_n_bytes, mul_decode, 0},
[0x4f] = {"mac", mul_n_bytes, mul_decode, 0},
[0x50] = {"adc", three, reg, imm1234_0base},
[0x51] = {"adc", three, reg, imm1234_0base},
[0x52] = {"adc", three, reg, imm1234_0base},
[0x53] = {"adc", three, reg, imm1234_0base},
[0x54] = {"adc", two, reg, imm1234_0base},
[0x55] = {"adc", two, reg, imm1234_0base},
[0x56] = {"adc", five, reg, imm1234_0base},
[0x57] = {"adc", five, reg, imm1234_0base},
[0x58] = {"bit", three, reg, imm1234_8base},
[0x59] = {"bit", three, reg, imm1234_8base},
[0x5a] = {"bit", three, reg, imm1234_8base},
[0x5b] = {"bit", three, reg, imm1234_8base},
[0x5c] = {"bit", two, reg, imm1234_8base},
[0x5d] = {"bit", two, reg, imm1234_8base},
[0x5e] = {"bit", five, reg, imm1234_8base},
[0x5f] = {"bit", five, reg, imm1234_8base},
[0x60] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x61] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x62] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x63] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x64] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x65] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x66] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x67] = {"adc", opr_n_bytes_p1, reg, opr_decode},
[0x68] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x69] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x6a] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x6b] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x6c] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x6d] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x6e] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x6f] = {"bit", opr_n_bytes_p1, reg, opr_decode},
[0x70] = {"sbc", three, reg, imm1234_0base},
[0x71] = {"sbc", three, reg, imm1234_0base},
[0x72] = {"sbc", three, reg, imm1234_0base},
[0x73] = {"sbc", three, reg, imm1234_0base},
[0x74] = {"sbc", two, reg, imm1234_0base},
[0x75] = {"sbc", two, reg, imm1234_0base},
[0x76] = {"sbc", five, reg, imm1234_0base},
[0x77] = {"sbc", five, reg, imm1234_0base},
[0x78] = {"eor", three, reg, imm1234_8base},
[0x79] = {"eor", three, reg, imm1234_8base},
[0x7a] = {"eor", three, reg, imm1234_8base},
[0x7b] = {"eor", three, reg, imm1234_8base},
[0x7c] = {"eor", two, reg, imm1234_8base},
[0x7d] = {"eor", two, reg, imm1234_8base},
[0x7e] = {"eor", five, reg, imm1234_8base},
[0x7f] = {"eor", five, reg, imm1234_8base},
[0x80] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x81] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x82] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x83] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x84] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x85] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x86] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x87] = {"sbc", opr_n_bytes_p1, reg, opr_decode},
[0x88] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x89] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x8a] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x8b] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x8c] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x8d] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x8e] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x8f] = {"eor", opr_n_bytes_p1, reg, opr_decode},
[0x90] = {"rti", single, 0, 0},
[0x91] = {"clb", two, tfr, 0},
[0x92] = {"trap", single, trap_decode, 0},
[0x93] = {"trap", single, trap_decode, 0},
[0x94] = {"trap", single, trap_decode, 0},
[0x95] = {"trap", single, trap_decode, 0},
[0x96] = {"trap", single, trap_decode, 0},
[0x97] = {"trap", single, trap_decode, 0},
[0x98] = {"trap", single, trap_decode, 0},
[0x99] = {"trap", single, trap_decode, 0},
[0x9a] = {"trap", single, trap_decode, 0},
[0x9b] = {"trap", single, trap_decode, 0},
[0x9c] = {"trap", single, trap_decode, 0},
[0x9d] = {"trap", single, trap_decode, 0},
[0x9e] = {"trap", single, trap_decode, 0},
[0x9f] = {"trap", single, trap_decode, 0},
[0xa0] = {"sat", single, reg, 0},
[0xa1] = {"sat", single, reg, 0},
[0xa2] = {"sat", single, reg, 0},
[0xa3] = {"sat", single, reg, 0},
[0xa4] = {"sat", single, reg, 0},
[0xa5] = {"sat", single, reg, 0},
[0xa6] = {"sat", single, reg, 0},
[0xa7] = {"sat", single, reg, 0},
[0xa8] = {"trap", single, trap_decode, 0},
[0xa9] = {"trap", single, trap_decode, 0},
[0xaa] = {"trap", single, trap_decode, 0},
[0xab] = {"trap", single, trap_decode, 0},
[0xac] = {"trap", single, trap_decode, 0},
[0xad] = {"trap", single, trap_decode, 0},
[0xae] = {"trap", single, trap_decode, 0},
[0xaf] = {"trap", single, trap_decode, 0},
[0xb0] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb1] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb2] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb3] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb4] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb5] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb6] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb7] = {"qmul", mul_n_bytes, mul_decode, 0},
[0xb8] = {"trap", single, trap_decode, 0},
[0xb9] = {"trap", single, trap_decode, 0},
[0xba] = {"trap", single, trap_decode, 0},
[0xbb] = {"trap", single, trap_decode, 0},
[0xbc] = {"trap", single, trap_decode, 0},
[0xbd] = {"trap", single, trap_decode, 0},
[0xbe] = {"trap", single, trap_decode, 0},
[0xbf] = {"trap", single, trap_decode, 0},
[0xc0] = {"trap", single, trap_decode, 0},
[0xc1] = {"trap", single, trap_decode, 0},
[0xc2] = {"trap", single, trap_decode, 0},
[0xc3] = {"trap", single, trap_decode, 0},
[0xc4] = {"trap", single, trap_decode, 0},
[0xc5] = {"trap", single, trap_decode, 0},
[0xc6] = {"trap", single, trap_decode, 0},
[0xc7] = {"trap", single, trap_decode, 0},
[0xc8] = {"trap", single, trap_decode, 0},
[0xc9] = {"trap", single, trap_decode, 0},
[0xca] = {"trap", single, trap_decode, 0},
[0xcb] = {"trap", single, trap_decode, 0},
[0xcc] = {"trap", single, trap_decode, 0},
[0xcd] = {"trap", single, trap_decode, 0},
[0xce] = {"trap", single, trap_decode, 0},
[0xcf] = {"trap", single, trap_decode, 0},
[0xd0] = {"trap", single, trap_decode, 0},
[0xd1] = {"trap", single, trap_decode, 0},
[0xd2] = {"trap", single, trap_decode, 0},
[0xd3] = {"trap", single, trap_decode, 0},
[0xd4] = {"trap", single, trap_decode, 0},
[0xd5] = {"trap", single, trap_decode, 0},
[0xd6] = {"trap", single, trap_decode, 0},
[0xd7] = {"trap", single, trap_decode, 0},
[0xd8] = {"trap", single, trap_decode, 0},
[0xd9] = {"trap", single, trap_decode, 0},
[0xda] = {"trap", single, trap_decode, 0},
[0xdb] = {"trap", single, trap_decode, 0},
[0xdc] = {"trap", single, trap_decode, 0},
[0xdd] = {"trap", single, trap_decode, 0},
[0xde] = {"trap", single, trap_decode, 0},
[0xdf] = {"trap", single, trap_decode, 0},
[0xe0] = {"trap", single, trap_decode, 0},
[0xe1] = {"trap", single, trap_decode, 0},
[0xe2] = {"trap", single, trap_decode, 0},
[0xe3] = {"trap", single, trap_decode, 0},
[0xe4] = {"trap", single, trap_decode, 0},
[0xe5] = {"trap", single, trap_decode, 0},
[0xe6] = {"trap", single, trap_decode, 0},
[0xe7] = {"trap", single, trap_decode, 0},
[0xe8] = {"trap", single, trap_decode, 0},
[0xe9] = {"trap", single, trap_decode, 0},
[0xea] = {"trap", single, trap_decode, 0},
[0xeb] = {"trap", single, trap_decode, 0},
[0xec] = {"trap", single, trap_decode, 0},
[0xed] = {"trap", single, trap_decode, 0},
[0xee] = {"trap", single, trap_decode, 0},
[0xef] = {"trap", single, trap_decode, 0},
[0xf0] = {"trap", single, trap_decode, 0},
[0xf1] = {"trap", single, trap_decode, 0},
[0xf2] = {"trap", single, trap_decode, 0},
[0xf3] = {"trap", single, trap_decode, 0},
[0xf4] = {"trap", single, trap_decode, 0},
[0xf5] = {"trap", single, trap_decode, 0},
[0xf6] = {"trap", single, trap_decode, 0},
[0xf7] = {"trap", single, trap_decode, 0},
[0xf8] = {"trap", single, trap_decode, 0},
[0xf9] = {"trap", single, trap_decode, 0},
[0xfa] = {"trap", single, trap_decode, 0},
[0xfb] = {"trap", single, trap_decode, 0},
[0xfc] = {"trap", single, trap_decode, 0},
[0xfd] = {"trap", single, trap_decode, 0},
[0xfe] = {"trap", single, trap_decode, 0},
[0xff] = {"trap", single, trap_decode, 0},
};
static const struct opcode page1[] =
{
[0x00] = {"bgnd", single, 0, 0},
[0x01] = {"nop", single, 0, 0},
[0x02] = {"brclr", bm_rel_n_bytes, bm_rel_decode, 0},
[0x03] = {"brset", bm_rel_n_bytes, bm_rel_decode, 0},
[0x04] = {NULL, two, 0, 0}, /* psh/pul */
[0x05] = {"rts", single, 0, 0},
[0x06] = {"lea", opr_n_bytes_p1, reg, opr_decode},
[0x07] = {"lea", opr_n_bytes_p1, reg, opr_decode},
[0x08] = {"lea", opr_n_bytes_p1, lea_reg_xys_opr, 0},
[0x09] = {"lea", opr_n_bytes_p1, lea_reg_xys_opr, 0},
[0x0a] = {"lea", opr_n_bytes_p1, lea_reg_xys_opr, 0},
[0x0b] = {NULL, loop_prim_n_bytes, 0, 0}, /* Loop primitives TBcc / DBcc */
[0x0c] = {"mov.b", mov_imm_opr_n_bytes, mov_imm_opr, 0},
[0x0d] = {"mov.w", mov_imm_opr_n_bytes, mov_imm_opr, 0},
[0x0e] = {"mov.p", mov_imm_opr_n_bytes, mov_imm_opr, 0},
[0x0f] = {"mov.l", mov_imm_opr_n_bytes, mov_imm_opr, 0},
[0x10] = {NULL, shift_n_bytes, 0, 0}, /* lsr/lsl/asl/asr/rol/ror */
[0x11] = {NULL, shift_n_bytes, 0, 0},
[0x12] = {NULL, shift_n_bytes, 0, 0},
[0x13] = {NULL, shift_n_bytes, 0, 0},
[0x14] = {NULL, shift_n_bytes, 0, 0},
[0x15] = {NULL, shift_n_bytes, 0, 0},
[0x16] = {NULL, shift_n_bytes, 0, 0},
[0x17] = {NULL, shift_n_bytes, 0, 0},
[0x18] = {"lea", two, lea_reg_xys, NULL},
[0x19] = {"lea", two, lea_reg_xys, NULL},
[0x1a] = {"lea", two, lea_reg_xys, NULL},
/* 0x1b PG2 */
[0x1c] = {"mov.b", opr_n_bytes2, 0, opr_decode2},
[0x1d] = {"mov.w", opr_n_bytes2, 0, opr_decode2},
[0x1e] = {"mov.p", opr_n_bytes2, 0, opr_decode2},
[0x1f] = {"mov.l", opr_n_bytes2, 0, opr_decode2},
[0x20] = {"bra", pcrel_15bit, decode_rel_15_7, 0},
[0x21] = {"bsr", pcrel_15bit, decode_rel_15_7, 0},
[0x22] = {"bhi", pcrel_15bit, decode_rel_15_7, 0},
[0x23] = {"bls", pcrel_15bit, decode_rel_15_7, 0},
[0x24] = {"bcc", pcrel_15bit, decode_rel_15_7, 0},
[0x25] = {"bcs", pcrel_15bit, decode_rel_15_7, 0},
[0x26] = {"bne", pcrel_15bit, decode_rel_15_7, 0},
[0x27] = {"beq", pcrel_15bit, decode_rel_15_7, 0},
[0x28] = {"bvc", pcrel_15bit, decode_rel_15_7, 0},
[0x29] = {"bvs", pcrel_15bit, decode_rel_15_7, 0},
[0x2a] = {"bpl", pcrel_15bit, decode_rel_15_7, 0},
[0x2b] = {"bmi", pcrel_15bit, decode_rel_15_7, 0},
[0x2c] = {"bge", pcrel_15bit, decode_rel_15_7, 0},
[0x2d] = {"blt", pcrel_15bit, decode_rel_15_7, 0},
[0x2e] = {"bgt", pcrel_15bit, decode_rel_15_7, 0},
[0x2f] = {"ble", pcrel_15bit, decode_rel_15_7, 0},
[0x30] = {"inc", single, reg, 0},
[0x31] = {"inc", single, reg, 0},
[0x32] = {"inc", single, reg, 0},
[0x33] = {"inc", single, reg, 0},
[0x34] = {"inc", single, reg, 0},
[0x35] = {"inc", single, reg, 0},
[0x36] = {"inc", single, reg, 0},
[0x37] = {"inc", single, reg, 0},
[0x38] = {"clr", single, reg, 0},
[0x39] = {"clr", single, reg, 0},
[0x3a] = {"clr", single, reg, 0},
[0x3b] = {"clr", single, reg, 0},
[0x3c] = {"clr", single, reg, 0},
[0x3d] = {"clr", single, reg, 0},
[0x3e] = {"clr", single, reg, 0},
[0x3f] = {"clr", single, reg, 0},
[0x40] = {"dec", single, reg, 0},
[0x41] = {"dec", single, reg, 0},
[0x42] = {"dec", single, reg, 0},
[0x43] = {"dec", single, reg, 0},
[0x44] = {"dec", single, reg, 0},
[0x45] = {"dec", single, reg, 0},
[0x46] = {"dec", single, reg, 0},
[0x47] = {"dec", single, reg, 0},
[0x48] = {"mul", mul_n_bytes, mul_decode, 0},
[0x49] = {"mul", mul_n_bytes, mul_decode, 0},
[0x4a] = {"mul", mul_n_bytes, mul_decode, 0},
[0x4b] = {"mul", mul_n_bytes, mul_decode, 0},
[0x4c] = {"mul", mul_n_bytes, mul_decode, 0},
[0x4d] = {"mul", mul_n_bytes, mul_decode, 0},
[0x4e] = {"mul", mul_n_bytes, mul_decode, 0},
[0x4f] = {"mul", mul_n_bytes, mul_decode, 0},
[0x50] = {"add", three, reg, imm1234_0base},
[0x51] = {"add", three, reg, imm1234_0base},
[0x52] = {"add", three, reg, imm1234_0base},
[0x53] = {"add", three, reg, imm1234_0base},
[0x54] = {"add", two, reg, imm1234_0base},
[0x55] = {"add", two, reg, imm1234_0base},
[0x56] = {"add", five, reg, imm1234_0base},
[0x57] = {"add", five, reg, imm1234_0base},
[0x58] = {"and", three, reg, imm1234_8base},
[0x59] = {"and", three, reg, imm1234_8base},
[0x5a] = {"and", three, reg, imm1234_8base},
[0x5b] = {"and", three, reg, imm1234_8base},
[0x5c] = {"and", two, reg, imm1234_8base},
[0x5d] = {"and", two, reg, imm1234_8base},
[0x5e] = {"and", five, reg, imm1234_8base},
[0x5f] = {"and", five, reg, imm1234_8base},
[0x60] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x61] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x62] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x63] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x64] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x65] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x66] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x67] = {"add", opr_n_bytes_p1, reg, opr_decode},
[0x68] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x69] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x6a] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x6b] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x6c] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x6d] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x6e] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x6f] = {"and", opr_n_bytes_p1, reg, opr_decode},
[0x70] = {"sub", three, reg, imm1234_0base},
[0x71] = {"sub", three, reg, imm1234_0base},
[0x72] = {"sub", three, reg, imm1234_0base},
[0x73] = {"sub", three, reg, imm1234_0base},
[0x74] = {"sub", two, reg, imm1234_0base},
[0x75] = {"sub", two, reg, imm1234_0base},
[0x76] = {"sub", five, reg, imm1234_0base},
[0x77] = {"sub", five, reg, imm1234_0base},
[0x78] = {"or", three, reg, imm1234_8base},
[0x79] = {"or", three, reg, imm1234_8base},
[0x7a] = {"or", three, reg, imm1234_8base},
[0x7b] = {"or", three, reg, imm1234_8base},
[0x7c] = {"or", two, reg, imm1234_8base},
[0x7d] = {"or", two, reg, imm1234_8base},
[0x7e] = {"or", five, reg, imm1234_8base},
[0x7f] = {"or", five, reg, imm1234_8base},
[0x80] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x81] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x82] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x83] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x84] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x85] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x86] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x87] = {"sub", opr_n_bytes_p1, reg, opr_decode},
[0x88] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x89] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x8a] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x8b] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x8c] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x8d] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x8e] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x8f] = {"or", opr_n_bytes_p1, reg, opr_decode},
[0x90] = {"ld", three, reg, imm1234_0base},
[0x91] = {"ld", three, reg, imm1234_0base},
[0x92] = {"ld", three, reg, imm1234_0base},
[0x93] = {"ld", three, reg, imm1234_0base},
[0x94] = {"ld", two, reg, imm1234_0base},
[0x95] = {"ld", two, reg, imm1234_0base},
[0x96] = {"ld", five, reg, imm1234_0base},
[0x97] = {"ld", five, reg, imm1234_0base},
[0x98] = {"ld", four, reg_xy, imm1234_0base},
[0x99] = {"ld", four, reg_xy, imm1234_0base},
[0x9a] = {"clr", single, reg_xy, 0},
[0x9b] = {"clr", single, reg_xy, 0},
[0x9c] = {"inc.b", opr_n_bytes_p1, 0, opr_decode},
[0x9d] = {"inc.w", opr_n_bytes_p1, 0, opr_decode},
[0x9e] = {"tfr", two, tfr, NULL},
[0x9f] = {"inc.l", opr_n_bytes_p1, 0, opr_decode},
[0xa0] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa1] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa2] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa3] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa4] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa5] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa6] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa7] = {"ld", opr_n_bytes_p1, reg, opr_decode},
[0xa8] = {"ld", opr_n_bytes_p1, reg_xy, opr_decode},
[0xa9] = {"ld", opr_n_bytes_p1, reg_xy, opr_decode},
[0xaa] = {"jmp", opr_n_bytes_p1, opr_decode, 0},
[0xab] = {"jsr", opr_n_bytes_p1, opr_decode, 0},
[0xac] = {"dec.b", opr_n_bytes_p1, 0, opr_decode},
[0xad] = {"dec.w", opr_n_bytes_p1, 0, opr_decode},
[0xae] = {NULL, two, 0, 0}, /* EXG / SEX */
[0xaf] = {"dec.l", opr_n_bytes_p1, 0, opr_decode},
[0xb0] = {"ld", four, reg, ext24_decode},
[0xb1] = {"ld", four, reg, ext24_decode},
[0xb2] = {"ld", four, reg, ext24_decode},
[0xb3] = {"ld", four, reg, ext24_decode},
[0xb4] = {"ld", four, reg, ext24_decode},
[0xb5] = {"ld", four, reg, ext24_decode},
[0xb6] = {"ld", four, reg, ext24_decode},
[0xb7] = {"ld", four, reg, ext24_decode},
[0xb8] = {"ld", four, reg_xy, ext24_decode},
[0xb9] = {"ld", four, reg_xy, ext24_decode},
[0xba] = {"jmp", four, ext24_decode, 0},
[0xbb] = {"jsr", four, ext24_decode, 0},
[0xbc] = {"clr.b", opr_n_bytes_p1, 0, opr_decode},
[0xbd] = {"clr.w", opr_n_bytes_p1, 0, opr_decode},
[0xbe] = {"clr.p", opr_n_bytes_p1, 0, opr_decode},
[0xbf] = {"clr.l", opr_n_bytes_p1, 0, opr_decode},
[0xc0] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc1] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc2] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc3] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc4] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc5] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc6] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc7] = {"st", opr_n_bytes_p1, reg, opr_decode},
[0xc8] = {"st", opr_n_bytes_p1, reg_xy, opr_decode},
[0xc9] = {"st", opr_n_bytes_p1, reg_xy, opr_decode},
[0xca] = {"ld", three, reg_xy, ld_18bit_decode},
[0xcb] = {"ld", three, reg_xy, ld_18bit_decode},
[0xcc] = {"com.b", opr_n_bytes_p1, NULL, opr_decode},
[0xcd] = {"com.w", opr_n_bytes_p1, NULL, opr_decode},
[0xce] = {"andcc", two, imm1, 0},
[0xcf] = {"com.l", opr_n_bytes_p1, NULL, opr_decode},
[0xd0] = {"st", four, reg, ext24_decode},
[0xd1] = {"st", four, reg, ext24_decode},
[0xd2] = {"st", four, reg, ext24_decode},
[0xd3] = {"st", four, reg, ext24_decode},
[0xd4] = {"st", four, reg, ext24_decode},
[0xd5] = {"st", four, reg, ext24_decode},
[0xd6] = {"st", four, reg, ext24_decode},
[0xd7] = {"st", four, reg, ext24_decode},
[0xd8] = {"st", four, reg_xy, ext24_decode},
[0xd9] = {"st", four, reg_xy, ext24_decode},
[0xda] = {"ld", three, reg_xy, ld_18bit_decode},
[0xdb] = {"ld", three, reg_xy, ld_18bit_decode},
[0xdc] = {"neg.b", opr_n_bytes_p1, NULL, opr_decode},
[0xdd] = {"neg.w", opr_n_bytes_p1, NULL, opr_decode},
[0xde] = {"orcc", two, imm1, 0},
[0xdf] = {"neg.l", opr_n_bytes_p1, NULL, opr_decode},
[0xe0] = {"cmp", three, reg, imm1234_0base},
[0xe1] = {"cmp", three, reg, imm1234_0base},
[0xe2] = {"cmp", three, reg, imm1234_0base},
[0xe3] = {"cmp", three, reg, imm1234_0base},
[0xe4] = {"cmp", two, reg, imm1234_0base},
[0xe5] = {"cmp", two, reg, imm1234_0base},
[0xe6] = {"cmp", five, reg, imm1234_0base},
[0xe7] = {"cmp", five, reg, imm1234_0base},
[0xe8] = {"cmp", four, reg_xy, imm1234_0base},
[0xe9] = {"cmp", four, reg_xy, imm1234_0base},
[0xea] = {"ld", three, reg_xy, ld_18bit_decode},
[0xeb] = {"ld", three, reg_xy, ld_18bit_decode},
[0xec] = {"bclr", bm_n_bytes, bm_decode, 0},
[0xed] = {"bset", bm_n_bytes, bm_decode, 0},
[0xee] = {"btgl", bm_n_bytes, bm_decode, 0},
[0xef] = {"!!invalid!!", NULL, NULL, NULL}, /* SPARE */
[0xf0] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf1] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf2] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf3] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf4] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf5] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf6] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf7] = {"cmp", opr_n_bytes_p1, reg, opr_decode},
[0xf8] = {"cmp", opr_n_bytes_p1, reg_xy, opr_decode},
[0xf9] = {"cmp", opr_n_bytes_p1, reg_xy, opr_decode},
[0xfa] = {"ld", three, reg_xy, ld_18bit_decode},
[0xfb] = {"ld", three, reg_xy, ld_18bit_decode},
[0xfc] = {"cmp", single, cmp_xy, 0},
[0xfd] = {"sub", single, sub_d6_x_y, 0},
[0xfe] = {"sub", single, sub_d6_y_x, 0},
[0xff] = {"swi", single, 0, 0}
};
static const char *oprregs1[] =
{
"d3", "d2", "d1", "d0", "ccl", "cch"
};
static const char *oprregs2[] =
{
"y", "x", "d7", "d6", "d5", "d4"
};
enum MUL_MODE
{
MUL_REG_REG,
MUL_REG_OPR,
MUL_REG_IMM,
MUL_OPR_OPR
};
struct mb
{
uint8_t mask;
uint8_t value;
enum MUL_MODE mode;
};
static const struct mb mul_table[] = {
{0x40, 0x00, MUL_REG_REG},
{0x47, 0x40, MUL_REG_OPR},
{0x47, 0x41, MUL_REG_OPR},
{0x47, 0x43, MUL_REG_OPR},
{0x47, 0x44, MUL_REG_IMM},
{0x47, 0x45, MUL_REG_IMM},
{0x47, 0x47, MUL_REG_IMM},
{0x43, 0x42, MUL_OPR_OPR},
};
static void
mul_decode (bfd_vma memaddr, struct disassemble_info* info)
{
uint8_t mb;
int status = read_memory (memaddr, &mb, 1, info);
if (status < 0)
return;
uint8_t byte;
status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return;
(*info->fprintf_func) (info->stream, "%c", (mb & 0x80) ? 's' : 'u');
enum MUL_MODE mode = -1;
size_t i;
for (i = 0; i < sizeof (mul_table) / sizeof (mul_table[0]); ++i)
{
const struct mb *mm = mul_table + i;
if ((mb & mm->mask) == mm->value)
{
mode = mm->mode;
break;
}
}
switch (mode)
{
case MUL_REG_REG:
break;
case MUL_OPR_OPR:
{
int size1 = (mb & 0x30) >> 4;
int size2 = (mb & 0x0c) >> 2;
(*info->fprintf_func) (info->stream, ".%c%c",
shift_size_table [size1],
shift_size_table [size2]);
}
break;
default:
{
int size = (mb & 0x3);
(*info->fprintf_func) (info->stream, ".%c", shift_size_table [size]);
}
break;
}
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[byte & 0x7].name);
switch (mode)
{
case MUL_REG_REG:
case MUL_REG_IMM:
case MUL_REG_OPR:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[(mb & 0x38) >> 3].name);
break;
default:
break;
}
switch (mode)
{
case MUL_REG_IMM:
operand_separator (info);
int size = (mb & 0x3);
uint32_t imm = decode_signed_value (memaddr + 1, info, size + 1);
(*info->fprintf_func) (info->stream, "#%d", imm);
break;
case MUL_REG_REG:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[mb & 0x07].name);
break;
case MUL_REG_OPR:
opr_decode (memaddr + 1, info);
break;
case MUL_OPR_OPR:
{
int first = opr_n_bytes (memaddr + 1, info);
opr_decode (memaddr + 1, info);
opr_decode (memaddr + first + 1, info);
break;
}
}
}
static int
mul_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
int nx = 2;
uint8_t mb;
int status = read_memory (memaddr, &mb, 1, info);
if (status < 0)
return 0;
enum MUL_MODE mode = -1;
size_t i;
for (i = 0; i < sizeof (mul_table) / sizeof (mul_table[0]); ++i)
{
const struct mb *mm = mul_table + i;
if ((mb & mm->mask) == mm->value)
{
mode = mm->mode;
break;
}
}
int size = (mb & 0x3) + 1;
switch (mode)
{
case MUL_REG_IMM:
nx += size;
break;
case MUL_REG_REG:
break;
case MUL_REG_OPR:
nx += opr_n_bytes (memaddr + 1, info);
break;
case MUL_OPR_OPR:
{
int first = opr_n_bytes (memaddr + nx - 1, info);
nx += first;
int second = opr_n_bytes (memaddr + nx - 1, info);
nx += second;
}
break;
}
return nx;
}
/* The NXP documentation is vague about BM_RESERVED0 and BM_RESERVED1,
and contains obvious typos.
However the Freescale tools and experiments with the chip itself
seem to indicate that they behave like BM_REG_IMM and BM_OPR_REG
respectively. */
enum BM_MODE {
BM_REG_IMM,
BM_RESERVED0,
BM_OPR_B,
BM_OPR_W,
BM_OPR_L,
BM_OPR_REG,
BM_RESERVED1
};
struct bm
{
uint8_t mask;
uint8_t value;
enum BM_MODE mode;
};
static const struct bm bm_table[] = {
{ 0xC6, 0x04, BM_REG_IMM},
{ 0x84, 0x00, BM_REG_IMM},
{ 0x06, 0x06, BM_REG_IMM},
{ 0xC6, 0x44, BM_RESERVED0},
// 00
{ 0x8F, 0x80, BM_OPR_B},
{ 0x8E, 0x82, BM_OPR_W},
{ 0x8C, 0x88, BM_OPR_L},
{ 0x83, 0x81, BM_OPR_REG},
{ 0x87, 0x84, BM_RESERVED1},
};
static void
bm_decode (bfd_vma memaddr, struct disassemble_info* info)
{
uint8_t bm;
int status = read_memory (memaddr, &bm, 1, info);
if (status < 0)
return;
size_t i;
enum BM_MODE mode = -1;
for (i = 0; i < sizeof (bm_table) / sizeof (bm_table[0]); ++i)
{
const struct bm *bme = bm_table + i;
if ((bm & bme->mask) == bme->value)
{
mode = bme->mode;
break;
}
}
switch (mode)
{
case BM_REG_IMM:
case BM_RESERVED0:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[bm & 0x07].name);
break;
case BM_OPR_B:
(*info->fprintf_func) (info->stream, ".%c", 'b');
opr_decode (memaddr + 1, info);
break;
case BM_OPR_W:
(*info->fprintf_func) (info->stream, ".%c", 'w');
opr_decode (memaddr + 1, info);
break;
case BM_OPR_L:
(*info->fprintf_func) (info->stream, ".%c", 'l');
opr_decode (memaddr + 1, info);
break;
case BM_OPR_REG:
case BM_RESERVED1:
{
uint8_t xb;
read_memory (memaddr + 1, &xb, 1, info);
/* Don't emit a size suffix for register operands */
if ((xb & 0xF8) != 0xB8)
(*info->fprintf_func) (info->stream, ".%c", shift_size_table[(bm & 0x0c) >> 2]);
opr_decode (memaddr + 1, info);
}
break;
}
uint8_t imm = 0;
operand_separator (info);
switch (mode)
{
case BM_REG_IMM:
{
imm = (bm & 0x38) >> 3;
(*info->fprintf_func) (info->stream, "#%d", imm);
}
break;
case BM_OPR_L:
imm |= (bm & 0x03) << 3;
/* fallthrough */
case BM_OPR_W:
imm |= (bm & 0x01) << 3;
/* fallthrough */
case BM_OPR_B:
imm |= (bm & 0x70) >> 4;
(*info->fprintf_func) (info->stream, "#%d", imm);
break;
case BM_OPR_REG:
case BM_RESERVED1:
(*info->fprintf_func) (info->stream, "%s", registers[(bm & 0x70) >> 4].name);
break;
case BM_RESERVED0:
assert (0);
break;
}
}
static void
bm_rel_decode (bfd_vma memaddr, struct disassemble_info* info)
{
uint8_t bm;
int status = read_memory (memaddr, &bm, 1, info);
if (status < 0)
return;
size_t i;
enum BM_MODE mode = -1;
for (i = 0; i < sizeof (bm_table) / sizeof (bm_table[0]); ++i)
{
const struct bm *bme = bm_table + i;
if ((bm & bme->mask) == bme->value)
{
mode = bme->mode;
break;
}
}
switch (mode)
{
case BM_REG_IMM:
case BM_RESERVED0:
break;
case BM_OPR_B:
(*info->fprintf_func) (info->stream, ".%c", 'b');
break;
case BM_OPR_W:
(*info->fprintf_func) (info->stream, ".%c", 'w');
break;
case BM_OPR_L:
(*info->fprintf_func) (info->stream, ".%c", 'l');
break;
case BM_OPR_REG:
case BM_RESERVED1:
{
uint8_t xb;
read_memory (memaddr + 1, &xb, 1, info);
/* Don't emit a size suffix for register operands */
if ((xb & 0xF8) != 0xB8)
(*info->fprintf_func) (info->stream, ".%c",
shift_size_table[(bm & 0x0C) >> 2]);
}
break;
}
int n = 1;
switch (mode)
{
case BM_REG_IMM:
case BM_RESERVED0:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[bm & 0x07].name);
break;
case BM_OPR_B:
case BM_OPR_W:
case BM_OPR_L:
opr_decode (memaddr + 1, info);
n = 1 + opr_n_bytes (memaddr + 1, info);
break;
case BM_OPR_REG:
case BM_RESERVED1:
opr_decode (memaddr + 1, info);
break;
}
int imm = 0;
operand_separator (info);
switch (mode)
{
case BM_OPR_L:
imm |= (bm & 0x02) << 3;
/* fall through */
case BM_OPR_W:
imm |= (bm & 0x01) << 3;
/* fall through */
case BM_OPR_B:
imm |= (bm & 0x70) >> 4;
(*info->fprintf_func) (info->stream, "#%d", imm);
break;
case BM_RESERVED0:
imm = (bm & 0x38) >> 3;
(*info->fprintf_func) (info->stream, "#%d", imm);
break;
case BM_REG_IMM:
imm = (bm & 0xF8) >> 3;
(*info->fprintf_func) (info->stream, "#%d", imm);
break;
case BM_OPR_REG:
case BM_RESERVED1:
(*info->fprintf_func) (info->stream, "%s", registers[(bm & 0x70) >> 4].name);
n += opr_n_bytes (memaddr + 1, info);
break;
}
rel_15_7 (memaddr + n, info, n + 1);
}
static int
bm_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
uint8_t bm;
int status = read_memory (memaddr, &bm, 1, info);
if (status < 0)
return status;
size_t i;
enum BM_MODE mode = -1;
for (i = 0; i < sizeof (bm_table) / sizeof (bm_table[0]); ++i)
{
const struct bm *bme = bm_table + i;
if ((bm & bme->mask) == bme->value)
{
mode = bme->mode;
break;
}
}
int n = 2;
switch (mode)
{
case BM_REG_IMM:
case BM_RESERVED0:
break;
case BM_OPR_B:
case BM_OPR_W:
case BM_OPR_L:
n += opr_n_bytes (memaddr + 1, info);
break;
case BM_OPR_REG:
case BM_RESERVED1:
n += opr_n_bytes (memaddr + 1, info);
break;
}
return n;
}
static int
bm_rel_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
int n = 1 + bm_n_bytes (memaddr, info);
bfd_byte rb;
int status = read_memory (memaddr + n - 2, &rb, 1, info);
if (status != 0)
return status;
if (rb & 0x80)
n++;
return n;
}
/* shift direction */
enum SB_DIR
{
SB_LEFT,
SB_RIGHT
};
enum SB_TYPE
{
SB_ARITHMETIC,
SB_LOGICAL
};
enum SB_MODE
{
SB_REG_REG_N_EFF,
SB_REG_REG_N,
SB_REG_OPR_EFF,
SB_ROT,
SB_REG_OPR_OPR,
SB_OPR_N
};
struct sb
{
uint8_t mask;
uint8_t value;
enum SB_MODE mode;
};
static const struct sb sb_table[] = {
{0x30, 0x00, SB_REG_REG_N_EFF},
{0x30, 0x10, SB_REG_REG_N},
{0x34, 0x20, SB_REG_OPR_EFF},
{0x34, 0x24, SB_ROT},
{0x34, 0x30, SB_REG_OPR_OPR},
{0x34, 0x34, SB_OPR_N},
};
static int
shift_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte sb;
int status = read_memory (memaddr++, &sb, 1, info);
if (status != 0)
return status;
size_t i;
enum SB_MODE mode = -1;
for (i = 0; i < sizeof (sb_table) / sizeof (sb_table[0]); ++i)
{
const struct sb *sbe = sb_table + i;
if ((sb & sbe->mask) == sbe->value)
mode = sbe->mode;
}
switch (mode)
{
case SB_REG_REG_N_EFF:
return 2;
break;
case SB_REG_OPR_EFF:
case SB_ROT:
return 2 + opr_n_bytes (memaddr, info);
break;
case SB_REG_OPR_OPR:
{
int opr1 = opr_n_bytes (memaddr, info);
int opr2 = 0;
if ((sb & 0x30) != 0x20)
opr2 = opr_n_bytes (memaddr + opr1, info);
return 2 + opr1 + opr2;
}
break;
default:
return 3;
}
/* not reached */
return -1;
}
static int
mov_imm_opr_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return status;
int size = byte - 0x0c + 1;
return size + opr_n_bytes (memaddr + size, info) + 1;
}
static void
mov_imm_opr (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr - 1, &byte, 1, info);
if (status < 0)
return ;
int size = byte - 0x0c + 1;
uint32_t imm = decode_signed_value (memaddr, info, size);
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d", imm);
opr_decode (memaddr + size, info);
}
static void
ld_18bit_decode (bfd_vma memaddr, struct disassemble_info* info)
{
size_t size = 3;
bfd_byte buffer[3];
int status = read_memory (memaddr, buffer + 1, 2, info);
if (status < 0)
return ;
status = read_memory (memaddr - 1, buffer, 1, info);
if (status < 0)
return ;
buffer[0] = (buffer[0] & 0x30) >> 4;
size_t i;
uint32_t imm = 0;
for (i = 0; i < size; ++i)
{
imm |= buffer[i] << (8 * (size - i - 1));
}
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d", imm);
}
/* Loop Primitives */
enum LP_MODE {
LP_REG,
LP_XY,
LP_OPR
};
struct lp
{
uint8_t mask;
uint8_t value;
enum LP_MODE mode;
};
static const struct lp lp_mode[] = {
{0x08, 0x00, LP_REG},
{0x0C, 0x08, LP_XY},
{0x0C, 0x0C, LP_OPR},
};
static const char *lb_condition[] =
{
"ne", "eq", "pl", "mi", "gt", "le",
"??", "??"
};
static int
loop_prim_n_bytes (bfd_vma memaddr, struct disassemble_info* info)
{
int mx = 0;
uint8_t lb;
read_memory (memaddr + mx++, &lb, 1, info);
enum LP_MODE mode = -1;
size_t i;
for (i = 0; i < sizeof (lp_mode) / sizeof (lp_mode[0]); ++i)
{
const struct lp *pb = lp_mode + i;
if ((lb & pb->mask) == pb->value)
{
mode = pb->mode;
break;
}
}
if (mode == LP_OPR)
{
mx += opr_n_bytes (memaddr + mx, info) ;
}
uint8_t rb;
read_memory (memaddr + mx++, &rb, 1, info);
if (rb & 0x80)
mx++;
return mx + 1;
}
static int
print_insn_exg_sex (bfd_vma memaddr, struct disassemble_info* info)
{
uint8_t eb;
int status = read_memory (memaddr, &eb, 1, info);
if (status < 0)
return -1;
const struct reg *first = &registers[(eb & 0xf0) >> 4];
const struct reg *second = &registers[(eb & 0xf)];
if (first->bytes < second->bytes)
(*info->fprintf_func) (info->stream, "sex");
else
(*info->fprintf_func) (info->stream, "exg");
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", first->name);
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", second->name);
return 0;
}
static int
print_insn_loop_primitive (bfd_vma memaddr, struct disassemble_info* info)
{
int offs = 1;
uint8_t lb;
int status = read_memory (memaddr, &lb, 1, info);
char mnemonic[7];
int x = 0;
mnemonic[x++] = (lb & 0x80) ? 'd' : 't';
mnemonic[x++] = 'b';
stpcpy (mnemonic + x, lb_condition [(lb & 0x70) >> 4]);
x += 2;
const char *reg_dxy = NULL;
enum LP_MODE mode = -1;
size_t i;
for (i = 0; i < sizeof (lp_mode) / sizeof (lp_mode[0]); ++i)
{
const struct lp *pb = lp_mode + i;
if ((lb & pb->mask) == pb->value)
{
mode = pb->mode;
break;
}
}
switch (mode)
{
case LP_REG:
reg_dxy = registers [lb & 0x07].name;
break;
case LP_XY:
reg_dxy = (lb & 0x1) ? "y" : "x";
break;
case LP_OPR:
mnemonic[x++] = '.';
mnemonic[x++] = shift_size_table [lb & 0x03];
offs += opr_n_bytes (memaddr + 1, info);
break;
}
mnemonic[x++] = '\0';
(*info->fprintf_func) (info->stream, "%s", mnemonic);
if (mode == LP_OPR)
opr_decode (memaddr + 1, info);
else
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", reg_dxy);
}
rel_15_7 (memaddr + offs, info, offs + 1);
return status;
}
static int
print_insn_shift (bfd_vma memaddr, struct disassemble_info* info, uint8_t byte)
{
size_t i;
uint8_t sb;
int status = read_memory (memaddr, &sb, 1, info);
if (status < 0)
return status;
enum SB_DIR dir = (sb & 0x40) ? SB_LEFT : SB_RIGHT;
enum SB_TYPE type = (sb & 0x80) ? SB_ARITHMETIC : SB_LOGICAL;
enum SB_MODE mode = -1;
for (i = 0; i < sizeof (sb_table) / sizeof (sb_table[0]); ++i)
{
const struct sb *sbe = sb_table + i;
if ((sb & sbe->mask) == sbe->value)
mode = sbe->mode;
}
char mnemonic[6];
int x = 0;
if (mode == SB_ROT)
{
mnemonic[x++] = 'r';
mnemonic[x++] = 'o';
}
else
{
mnemonic[x++] = (type == SB_LOGICAL) ? 'l' : 'a';
mnemonic[x++] = 's';
}
mnemonic[x++] = (dir == SB_LEFT) ? 'l' : 'r';
switch (mode)
{
case SB_REG_OPR_EFF:
case SB_ROT:
case SB_REG_OPR_OPR:
mnemonic[x++] = '.';
mnemonic[x++] = shift_size_table[sb & 0x03];
break;
case SB_OPR_N:
{
uint8_t xb;
read_memory (memaddr + 1, &xb, 1, info);
/* The size suffix is not printed if the OPR operand refers
directly to a register, because the size is implied by the
size of that register. */
if ((xb & 0xF8) != 0xB8)
{
mnemonic[x++] = '.';
mnemonic[x++] = shift_size_table[sb & 0x03];
}
}
break;
default:
break;
};
mnemonic[x++] = '\0';
(*info->fprintf_func) (info->stream, "%s", mnemonic);
/* Destination register */
switch (mode)
{
case SB_REG_REG_N_EFF:
case SB_REG_REG_N:
case SB_REG_OPR_EFF:
case SB_REG_OPR_OPR:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[byte & 0x7].name);
break;
case SB_ROT:
opr_decode (memaddr + 1, info);
break;
default:
break;
}
/* Source register */
switch (mode)
{
case SB_REG_REG_N_EFF:
case SB_REG_REG_N:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", registers[sb & 0x7].name);
break;
case SB_REG_OPR_OPR:
opr_decode (memaddr + 1, info);
break;
default:
break;
}
/* 3rd arg */
switch (mode)
{
case SB_REG_OPR_EFF:
case SB_OPR_N:
opr_decode (memaddr + 1, info);
break;
case SB_REG_REG_N:
{
uint8_t xb;
read_memory (memaddr + 1, &xb, 1, info);
/* This case is slightly unusual.
If XB matches the binary pattern 0111XXXX, then instead of
interpreting this as a general OPR postbyte in the IMMe4 mode,
the XB byte is interpreted in s special way. */
if ((xb & 0xF0) == 0x70)
{
operand_separator (info);
if (byte & 0x10)
{
int shift = ((sb & 0x08) >> 3) | ((xb & 0x0f) << 1);
(*info->fprintf_func) (info->stream, "#%d", shift);
}
else
{
(*info->fprintf_func) (info->stream, "%s:%d", __FILE__, __LINE__);
}
}
else
{
opr_decode (memaddr + 1, info);
}
}
break;
case SB_REG_OPR_OPR:
{
uint8_t xb;
int n = opr_n_bytes (memaddr + 1, info);
read_memory (memaddr + 1 + n, &xb, 1, info);
if ((xb & 0xF0) == 0x70)
{
int imm = xb & 0x0F;
imm <<= 1;
imm |= (sb & 0x08) >> 3;
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d", imm);
}
else
{
opr_decode (memaddr + 1 + n, info);
}
}
break;
default:
break;
}
switch (mode)
{
case SB_REG_REG_N_EFF:
case SB_REG_OPR_EFF:
case SB_OPR_N:
operand_separator (info);
(*info->fprintf_func) (info->stream, "#%d",
(sb & 0x08) ? 2 : 1);
break;
default:
break;
}
return 0;
}
int
print_insn_s12z (bfd_vma memaddr, struct disassemble_info* info)
{
bfd_byte byte;
int status = read_memory (memaddr++, &byte, 1, info);
if (status != 0)
return status;
const struct opcode *opc2 = NULL;
const struct opcode *opc = page1 + byte;
if (opc->mnemonic)
{
(*info->fprintf_func) (info->stream, "%s", opc->mnemonic);
}
else
{
/* The special cases ... */
switch (byte)
{
case PAGE2_PREBYTE:
{
bfd_byte byte2;
read_memory (memaddr++, &byte2, 1, info);
opc2 = page2 + byte2;
if (opc2->mnemonic)
{
(*info->fprintf_func) (info->stream, "%s", opc2->mnemonic);
if (opc2->operands)
{
opc2->operands (memaddr, info);
}
if (opc2->operands2)
{
opc2->operands2 (memaddr, info);
}
}
else if (byte2 >= 0x08 && byte2 <= 0x1F)
{
bfd_byte bb;
read_memory (memaddr, &bb, 1, info);
if (bb & 0x80)
(*info->fprintf_func) (info->stream, "bfins");
else
(*info->fprintf_func) (info->stream, "bfext");
enum BB_MODE mode = -1;
size_t i;
const struct opr_bb *bbs = 0;
for (i = 0; i < sizeof (bb_modes) / sizeof (bb_modes[0]); ++i)
{
bbs = bb_modes + i;
if ((bb & bbs->mask) == bbs->value)
{
mode = bbs->mode;
break;
}
}
switch (mode)
{
case BB_REG_OPR_REG:
case BB_REG_OPR_IMM:
case BB_OPR_REG_REG:
case BB_OPR_REG_IMM:
{
int size = (bb >> 2) & 0x03;
(*info->fprintf_func) (info->stream, ".%c",
shift_size_table [size]);
}
break;
default:
break;
}
int reg1 = byte2 & 0x07;
/* First operand */
switch (mode)
{
case BB_REG_REG_REG:
case BB_REG_REG_IMM:
case BB_REG_OPR_REG:
case BB_REG_OPR_IMM:
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s",
registers[reg1].name);
break;
case BB_OPR_REG_REG:
opr_decode (memaddr + 1, info);
break;
case BB_OPR_REG_IMM:
opr_decode (memaddr + 2, info);
break;
}
/* Second operand */
switch (mode)
{
case BB_REG_REG_REG:
case BB_REG_REG_IMM:
{
int reg_src = (bb >> 2) & 0x07;
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s",
registers[reg_src].name);
}
break;
case BB_OPR_REG_REG:
case BB_OPR_REG_IMM:
{
int reg_src = (byte2 & 0x07);
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s",
registers[reg_src].name);
}
break;
case BB_REG_OPR_REG:
opr_decode (memaddr + 1, info);
break;
case BB_REG_OPR_IMM:
opr_decode (memaddr + 2, info);
break;
}
/* Third operand */
operand_separator (info);
switch (mode)
{
case BB_REG_REG_REG:
case BB_OPR_REG_REG:
case BB_REG_OPR_REG:
{
int reg_parm = bb & 0x03;
(*info->fprintf_func) (info->stream, "%s",
registers[reg_parm].name);
}
break;
case BB_REG_REG_IMM:
case BB_OPR_REG_IMM:
case BB_REG_OPR_IMM:
{
bfd_byte i1;
read_memory (memaddr + 1, &i1, 1, info);
int offset = i1 & 0x1f;
int width = bb & 0x03;
width <<= 3;
width |= i1 >> 5;
(*info->fprintf_func) (info->stream, "#%d:%d", width, offset);
}
break;
}
}
}
break;
case 0xae: /* EXG / SEX */
status = print_insn_exg_sex (memaddr, info);
break;
case 0x0b: /* Loop Primitives TBcc and DBcc */
status = print_insn_loop_primitive (memaddr, info);
break;
case 0x10: /* shift */
case 0x11: /* shift */
case 0x12: /* shift */
case 0x13: /* shift */
case 0x14: /* shift */
case 0x15: /* shift */
case 0x16: /* shift */
case 0x17: /* shift */
status = print_insn_shift (memaddr, info, byte);
break;
case 0x04: /* psh / pul */
{
read_memory (memaddr, &byte, 1, info);
(*info->fprintf_func) (info->stream, (byte & 0x80) ? "pul" : "psh");
int bit;
if (byte & 0x40)
{
if ((byte & 0x3F) == 0)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", "ALL16b");
}
else
for (bit = 5; bit >= 0; --bit)
{
if (byte & (0x1 << bit))
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", oprregs2[bit]);
}
}
}
else
{
if ((byte & 0x3F) == 0)
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", "ALL");
}
else
for (bit = 5; bit >= 0; --bit)
{
if (byte & (0x1 << bit))
{
operand_separator (info);
(*info->fprintf_func) (info->stream, "%s", oprregs1[bit]);
}
}
}
}
break;
default:
operand_separator (info);
(*info->fprintf_func) (info->stream, "???");
break;
}
}
if (opc2 == NULL)
{
if (opc->operands)
{
opc->operands (memaddr, info);
}
if (opc->operands2)
{
opc->operands2 (memaddr, info);
}
}
int n = 0;
/* Opcodes in page2 have an additional byte */
if (opc2)
n++;
if (opc2 && opc2->insn_bytes == 0)
return n;
if (!opc2 && opc->insn_bytes == 0)
return n;
if (opc2)
n += opc2->insn_bytes (memaddr, info);
else
n += opc->insn_bytes (memaddr, info);
return n;
}
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