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ld.h
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/*
x86 Length Disassembler.
Copyright (C) 2016 Alessandro Pellegrini
Copyright (C) 2013 Byron Platt
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#pragma once
/* table macros */
#define BITMASK32( \
b00,b01,b02,b03,b04,b05,b06,b07, \
b08,b09,b0a,b0b,b0c,b0d,b0e,b0f, \
b10,b11,b12,b13,b14,b15,b16,b17, \
b18,b19,b1a,b1b,b1c,b1d,b1e,b1f \
) ( \
(b00<<0x00)|(b01<<0x01)|(b02<<0x02)|(b03<<0x03)| \
(b04<<0x04)|(b05<<0x05)|(b06<<0x06)|(b07<<0x07)| \
(b08<<0x08)|(b09<<0x09)|(b0a<<0x0a)|(b0b<<0x0b)| \
(b0c<<0x0c)|(b0d<<0x0d)|(b0e<<0x0e)|(b0f<<0x0f)| \
(b10<<0x10)|(b11<<0x11)|(b12<<0x12)|(b13<<0x13)| \
(b14<<0x14)|(b15<<0x15)|(b16<<0x16)|(b17<<0x17)| \
(b18<<0x18)|(b19<<0x19)|(b1a<<0x1a)|(b1b<<0x1b)| \
(b1c<<0x1c)|(b1d<<0x1d)|(b1e<<0x1e)|(b1f<<0x1f) \
)
#define CHECK_TABLE(t, v) ((t[(v)>>5]>>((v)&0x1f))&1)
/* CHECK_PREFIX */
const static unsigned int prefix_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 0 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 1 */
BITMASK32(0,0,0,0,0,0,1,0, 0,0,0,0,0,0,1,0, /* 2 */
0,0,0,0,0,0,1,0, 0,0,0,0,0,0,1,0), /* 3 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 4 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 5 */
BITMASK32(0,0,0,0,1,1,1,1, 0,0,0,0,0,0,0,0, /* 6 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 7 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 8 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 9 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* a */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* b */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* c */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* d */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* e */
1,0,1,1,0,0,0,0, 0,0,0,0,0,0,0,0) /* f */
};
#define CHECK_PREFIX(v) CHECK_TABLE(prefix_t, v)
/* x64 REX prefix handling */
#define CHECK_REX(v) (((v)>>4)==0x4)
#define CHECK_REXW(v) ((v)&0x08)
/* Check for movs which handle imm64 */
#define CHECK_IMM64(v) (((v)&0xf8)==0xb8)
/* Check for movs which handles moffs64 */
#define CHECK_OFF64(v) ((v)==0xa1)
/* CHECK_PREFIX_66 */
#define CHECK_PREFIX_66(v) ((v)==0x66)
/* CHECK_PREFIX_67 */
#define CHECK_PREFIX_67(v) ((v)==0x67)
/* CHECK_0F */
#define CHECK_0F(v) ((v)==0x0f)
/* CHECK_38 */
#define CHECK_38(v) ((v)==0x38)
/* CHECK_3A */
#define CHECK_3A(v) ((v)==0x3a)
/* CHECK_MODRM3A */
const static unsigned int modrm3a_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* 0 */
0,0,0,0,1,1,1,1, 1,1,1,1,0,1,1,1), /* 1 */
BITMASK32(1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0, /* 2 */
1,1,1,1,0,0,0,0, 1,1,1,1,0,1,1,1), /* 3 */
BITMASK32(1,1,1,1,1,0,1,0, 1,1,1,1,1,0,0,0, /* 4 */
1,1,1,0,1,1,1,1, 0,0,0,0,1,1,1,1), /* 5 */
BITMASK32(1,1,1,1,0,0,1,1, 1,1,1,1,1,1,1,1, /* 6 */
0,0,0,0,0,0,0,0, 1,1,1,1,1,1,1,1), /* 7 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 8 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 9 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* a */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* b */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,1,1,1,0,0,0, /* c */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,1), /* d */
BITMASK32(0,0,0,0,0,0,1,0, 0,0,0,0,0,0,0,0, /* e */
1,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0) /* f */
};
#define CHECK_MODRM3A(v) CHECK_TABLE(modrm3a_t, v)
/* CHECK_MODRM38 */
const static unsigned int modrm38_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* 0 */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* 1 */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* 2 */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* 3 */
BITMASK32(1,1,1,1,1,1,1,1, 0,0,0,0,1,1,1,1, /* 4 */
1,1,1,1,0,1,0,0, 1,1,1,1,1,1,1,1), /* 5 */
BITMASK32(0,0,0,0,1,1,1,0, 0,0,0,0,1,1,1,1, /* 6 */
0,0,0,0,1,1,1,1, 1,1,1,1,1,1,1,1), /* 7 */
BITMASK32(1,1,1,1,1,0,1,1, 1,1,1,1,1,1,1,1, /* 8 */
1,1,1,1,0,0,1,1, 1,1,1,1,1,1,1,1), /* 9 */
BITMASK32(1,1,1,1,1,0,1,1, 1,1,1,1,1,1,1,1, /* a */
0,0,0,0,1,1,1,1, 1,1,1,1,1,1,1,1), /* b */
BITMASK32(0,0,0,0,0,1,1,1, 1,1,1,1,1,1,0,0, /* c */
1,1,0,0,1,1,0,0, 0,0,0,1,1,1,1,1), /* d */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* e */
1,1,1,1,0,1,1,1, 0,0,0,0,0,0,0,0) /* f */
};
#define CHECK_MODRM38(v) CHECK_TABLE(modrm38_t, v)
/* CHECK_MODRM2 */
const static unsigned int modrm2_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(1,1,1,1,0,0,0,0, 0,0,0,0,0,0,0,0, /* 0 */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* 1 */
BITMASK32(1,1,1,1,0,0,0,0, 1,1,1,1,1,1,1,1, /* 2 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 3 */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* 4 */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* 5 */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* 6 */
1,0,0,0,1,1,1,0, 1,1,0,0,1,1,1,1), /* 7 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 8 */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* 9 */
BITMASK32(0,0,0,1,1,1,0,0, 0,0,0,1,1,1,0,1, /* a */
1,1,1,1,1,1,1,1, 1,0,1,1,1,1,1,1), /* b */
BITMASK32(1,1,1,1,1,1,1,0, 0,0,0,0,0,0,0,0, /* c */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* d */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* e */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1) /* f */
};
#define CHECK_MODRM2(v) CHECK_TABLE(modrm2_t, v)
/* CHECK_DATA12 */
#define CHECK_DATA12(v) ((v)==0xa4||(v)==0xac||(v)==0xba)
/* CHECK_DATA662 */
#define CHECK_DATA662(v) (((v)&0xf0)==0x80)
/* CHECK_MODRM */
const static unsigned int modrm_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(1,1,1,1,0,0,0,0, 1,1,1,1,0,0,0,0, /* 0 */
1,1,1,1,0,0,0,0, 1,1,1,1,0,0,0,0), /* 1 */
BITMASK32(1,1,1,1,0,0,0,0, 1,1,1,1,0,0,0,0, /* 2 */
1,1,1,1,0,0,0,0, 1,1,1,1,0,0,0,0), /* 3 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 4 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 5 */
BITMASK32(0,0,1,1,0,0,0,0, 0,1,0,1,0,0,0,0, /* 6 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 7 */
BITMASK32(1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, /* 8 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 9 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* a */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* b */
BITMASK32(1,1,0,0,1,1,1,1, 0,0,0,0,0,0,0,0, /* c */
1,1,1,1,0,0,0,0, 1,1,1,1,1,1,1,1), /* d */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* e */
0,0,0,0,0,0,1,1, 0,0,0,0,0,0,1,1) /* f */
};
#define CHECK_MODRM(v) CHECK_TABLE(modrm_t, v)
/* CHECK_TEST */
#define CHECK_TEST(v) ((v)==0xf6||(v)==0xf7)
/* CHECK_DATA1 */
const static unsigned int data1_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(0,0,0,0,1,0,0,0, 0,0,0,0,1,0,0,0, /* 0 */
0,0,0,0,1,0,0,0, 0,0,0,0,1,0,0,0), /* 1 */
BITMASK32(0,0,0,0,1,0,0,0, 0,0,0,0,1,0,0,0, /* 2 */
0,0,0,0,1,0,0,0, 0,0,0,0,1,0,0,0), /* 3 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 4 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 5 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,1,1,0,0,0,0, /* 6 */
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1), /* 7 */
BITMASK32(1,0,1,1,0,0,0,0, 0,0,0,0,0,0,0,0, /* 8 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 9 */
BITMASK32(0,0,0,0,0,0,0,0, 1,0,0,0,0,0,0,0, /* a */
1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0), /* b */
BITMASK32(1,1,0,0,0,0,1,0, 1,0,0,0,0,1,0,0, /* c */
0,0,0,0,1,1,0,0, 0,0,0,0,0,0,0,0), /* d */
BITMASK32(1,1,1,1,1,1,1,1, 0,0,0,1,0,0,0,0, /* e */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0) /* f */
};
#define CHECK_DATA1(v) CHECK_TABLE(data1_t, v)
/* CHECK_DATA2 */
const static unsigned int data2_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 0 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 1 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 2 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 3 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 4 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 5 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 6 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 7 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 8 */
0,0,0,0,0,0,0,0, 0,0,1,0,0,0,0,0), /* 9 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* a */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* b */
BITMASK32(0,0,1,0,0,0,0,0, 1,0,1,0,0,0,0,0, /* c */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* d */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,1,0,0,0,0,0, /* e */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0) /* f */
};
#define CHECK_DATA2(v) CHECK_TABLE(data2_t, v)
/* CHECK_DATA66 */
const static unsigned int data66_t[] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
BITMASK32(0,0,0,0,0,1,0,0, 0,0,0,0,0,1,0,0, /* 0 */
0,0,0,0,0,1,0,0, 0,0,0,0,0,1,0,0), /* 1 */
BITMASK32(0,0,0,0,0,1,0,0, 0,0,0,0,0,1,0,0, /* 2 */
0,0,0,0,0,1,0,0, 0,0,0,0,0,1,0,0), /* 3 */
BITMASK32(0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 4 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 5 */
BITMASK32(0,0,0,0,0,0,0,0, 1,1,0,0,0,0,0,0, /* 6 */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* 7 */
BITMASK32(0,1,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, /* 8 */
0,0,0,0,0,0,0,0, 0,0,1,0,0,0,0,0), /* 9 */
BITMASK32(0,0,0,0,0,0,0,0, 0,1,0,0,0,0,0,0, /* a */
0,0,0,0,0,0,0,0, 1,1,1,1,1,1,1,1), /* b */
BITMASK32(0,0,0,0,0,0,0,1, 0,0,0,0,0,0,0,0, /* c */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0), /* d */
BITMASK32(0,0,0,0,0,0,0,0, 1,1,1,0,0,0,0,0, /* e */
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0) /* f */
};
#define CHECK_DATA66(v) CHECK_TABLE(data66_t, v)
/* CHECK_MEM67 */
#define CHECK_MEM67(v) (((v)&0xfc)==0xa0)