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Bochs/bochs/disasm/disasm.h

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2005-2014 Stanislav Shwartsman
// Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
#ifndef _BX_DISASM_H_
#define _BX_DISASM_H_
#include "config.h"
#include "cpu/decoder/decoder.h"
#define BX_DECODE_MODRM(modrm_byte, mod, opcode, rm) { \
mod = (modrm_byte >> 6) & 0x03; \
opcode = (modrm_byte >> 3) & 0x07; \
rm = modrm_byte & 0x07; \
}
#define BX_DECODE_SIB(sib_byte, scale, index, base) { \
scale = sib_byte >> 6; \
index = (sib_byte >> 3) & 0x07; \
base = sib_byte & 0x07; \
}
class disassembler;
struct x86_insn;
typedef void (disassembler::*BxDisasmPtr_t)(const x86_insn *insn);
typedef void (disassembler::*BxDisasmResolveModrmPtr_t)(const x86_insn *insn, unsigned attr);
struct BxDisasmOpcodeInfo_t
{
const char *IntelOpcode;
const char *AttOpcode;
BxDisasmPtr_t Operand1;
BxDisasmPtr_t Operand2;
BxDisasmPtr_t Operand3;
BxDisasmPtr_t Operand4;
Bit8u Feature;
};
struct BxDisasmOpcodeTable_t
{
Bit32u Attr;
const void *OpcodeInfo;
};
// segment override not used
#define NO_SEG_OVERRIDE 0xFF
// datasize attributes
#define X_SIZE 0x00 /* no size */
#define B_SIZE 0x01 /* byte */
#define W_SIZE 0x02 /* word */
#define D_SIZE 0x03 /* double word */
#define Q_SIZE 0x04 /* quad word */
#define Z_SIZE 0x05 /* double word in 32-bit mode, quad word in 64-bit mode */
#define T_SIZE 0x06 /* 10-byte x87 floating point */
#define XMM_SIZE 0x07 /* double quad word (XMM) */
#define YMM_SIZE 0x08 /* quadruple quad word (YMM) */
#define VSIB_Index 0x80
// branch hint attribute
#define BRANCH_HINT 0x1000
struct x86_insn
{
public:
x86_insn(bx_bool is32, bx_bool is64);
bx_bool is_seg_override() const {
return (seg_override != NO_SEG_OVERRIDE);
}
public:
bx_bool is_32, is_64;
bx_bool as_32, as_64;
bx_bool os_32, os_64;
Bit8u extend8b;
Bit8u rex_r, rex_x, rex_b;
Bit8u seg_override;
unsigned b1;
unsigned ilen;
#define BX_AVX_VL128 0
#define BX_AVX_VL256 1
Bit8u vex_vvv, vex_l, vex_w;
int is_vex; // 0 - no VEX used, 1 - VEX is used, -1 - invalid VEX
int is_evex; // 0 - no EVEX used, 1 - EVEX is used, -1 - invalid EVEX
int is_xop; // 0 - no XOP used, 1 - XOP is used, -1 - invalid XOP
Bit8u modrm, mod, nnn, rm;
Bit8u sib, scale, index, base;
union {
Bit16u displ16;
Bit32u displ32;
} displacement;
bx_bool evex_b;
bx_bool evex_z;
unsigned evex_ll_rc;
};
BX_CPP_INLINE x86_insn::x86_insn(bx_bool is32, bx_bool is64)
{
is_32 = is32;
is_64 = is64;
if (is_64) {
os_64 = 0;
as_64 = 1;
os_32 = 1;
as_32 = 1;
}
else {
os_64 = 0;
as_64 = 0;
os_32 = is_32;
as_32 = is_32;
}
extend8b = 0;
rex_r = rex_b = rex_x = 0;
seg_override = NO_SEG_OVERRIDE;
ilen = 0;
b1 = 0;
is_vex = 0;
is_evex = 0;
is_xop = 0;
vex_vvv = 0;
vex_l = BX_AVX_VL128;
vex_w = 0;
modrm = mod = nnn = rm = 0;
sib = scale = index = base = 0;
displacement.displ32 = 0;
evex_b = 0;
evex_ll_rc = 0;
evex_z = 0;
}
class disassembler {
public:
disassembler(): offset_mode_hex(0), print_mem_datasize(1) { set_syntax_intel(); }
unsigned disasm(bx_bool is_32, bx_bool is_64, bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf);
unsigned disasm16(bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return disasm(0, 0, cs_base, ip, instr, disbuf); }
unsigned disasm32(bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return disasm(1, 0, cs_base, ip, instr, disbuf); }
unsigned disasm64(bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return disasm(1, 1, cs_base, ip, instr, disbuf); }
x86_insn decode(bx_bool is_32, bx_bool is_64, bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf);
x86_insn decode16(bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return decode(0, 0, cs_base, ip, instr, disbuf); }
x86_insn decode32(bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return decode(1, 0, cs_base, ip, instr, disbuf); }
x86_insn decode64(bx_address cs_base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return decode(1, 1, cs_base, ip, instr, disbuf); }
void set_syntax_intel();
void set_syntax_att();
void set_offset_mode_hex(bx_bool mode) { offset_mode_hex = mode; }
void set_mem_datasize_print(bx_bool mode) { print_mem_datasize = mode; }
void toggle_syntax_mode();
private:
bx_bool intel_mode, offset_mode_hex, print_mem_datasize;
const char **general_16bit_regname;
const char **general_8bit_regname;
const char **general_32bit_regname;
const char **general_8bit_regname_rex;
const char **general_64bit_regname;
const char **segment_name;
const char **index16;
const char **vector_reg_name;
const char *sreg_mod00_base32[16];
const char *sreg_mod01or10_base32[16];
const char *sreg_mod00_rm16[8];
const char *sreg_mod01or10_rm16[8];
private:
bx_address db_eip, db_cs_base;
const Bit8u *instruction; // for fetching of next byte of instruction
char *disbufptr;
BxDisasmResolveModrmPtr_t resolve_modrm;
BX_CPP_INLINE Bit8u fetch_byte() {
db_eip++;
return(*instruction++);
};
BX_CPP_INLINE Bit8u peek_byte() {
return(*instruction);
};
BX_CPP_INLINE Bit16u fetch_word() {
Bit8u b0 = * (Bit8u *) instruction++;
Bit8u b1 = * (Bit8u *) instruction++;
Bit16u ret16 = (b1<<8) | b0;
db_eip += 2;
return(ret16);
};
BX_CPP_INLINE Bit32u fetch_dword() {
Bit8u b0 = * (Bit8u *) instruction++;
Bit8u b1 = * (Bit8u *) instruction++;
Bit8u b2 = * (Bit8u *) instruction++;
Bit8u b3 = * (Bit8u *) instruction++;
Bit32u ret32 = (b3<<24) | (b2<<16) | (b1<<8) | b0;
db_eip += 4;
return(ret32);
};
BX_CPP_INLINE Bit64u fetch_qword() {
Bit64u d0 = fetch_dword();
Bit64u d1 = fetch_dword();
Bit64u ret64 = (d1<<32) | d0;
return(ret64);
};
void dis_putc(char symbol);
void dis_sprintf(const char *fmt, ...);
void decode_modrm(x86_insn *insn);
unsigned decode_vex(x86_insn *insn);
unsigned decode_evex(x86_insn *insn);
unsigned decode_xop(x86_insn *insn);
void resolve16_mod0 (const x86_insn *insn, unsigned mode);
void resolve16_mod1or2(const x86_insn *insn, unsigned mode);
void resolve32_mod0 (const x86_insn *insn, unsigned mode);
void resolve32_mod1or2(const x86_insn *insn, unsigned mode);
void resolve32_mod0_rm4 (const x86_insn *insn, unsigned mode);
void resolve32_mod1or2_rm4(const x86_insn *insn, unsigned mode);
void resolve64_mod0 (const x86_insn *insn, unsigned mode);
void resolve64_mod1or2(const x86_insn *insn, unsigned mode);
void resolve64_mod0_rm4 (const x86_insn *insn, unsigned mode);
void resolve64_mod1or2_rm4(const x86_insn *insn, unsigned mode);
void initialize_modrm_segregs();
void print_datasize(unsigned mode);
void print_memory_access16(int datasize,
const char *seg, const char *index, Bit16u disp);
void print_memory_access32(int datasize,
const char *seg, const char *base, const char *index, int scale, Bit32s disp);
void print_memory_access64(int datasize,
const char *seg, const char *base, const char *index, int scale, Bit32s disp);
void print_disassembly_intel(const x86_insn *insn, const BxDisasmOpcodeInfo_t *entry);
void print_disassembly_att (const x86_insn *insn, const BxDisasmOpcodeInfo_t *entry);
public:
/*
* Codes for Addressing Method:
* ---------------------------
* A - Direct address. The instruction has no ModR/M byte; the address
* of the operand is encoded in the instruction; and no base register,
* index register, or scaling factor can be applied.
* C - The reg field of the ModR/M byte selects a control register.
* D - The reg field of the ModR/M byte selects a debug register.
* E - A ModR/M byte follows the opcode and specifies the operand. The
* operand is either a general-purpose register or a memory address.
* In case of the register operand, the R/M field of the ModR/M byte
* selects a general register.
* F - Flags Register.
* G - The reg field of the ModR/M byte selects a general register.
* I - Immediate data. The operand value is encoded in subsequent bytes of
* the instruction.
* J - The instruction contains a relative offset to be added to the
* instruction pointer register.
* M - The ModR/M byte may refer only to memory.
* N - The R/M field of the ModR/M byte selects a packed-quadword MMX
technology register.
* O - The instruction has no ModR/M byte; the offset of the operand is
* coded as a word or double word (depending on address size attribute)
* in the instruction. No base register, index register, or scaling
* factor can be applied.
* P - The reg field of the ModR/M byte selects a packed quadword MMX
* technology register.
* Q - A ModR/M byte follows the opcode and specifies the operand. The
* operand is either an MMX technology register or a memory address.
* If it is a memory address, the address is computed from a segment
* register and any of the following values: a base register, an
* index register, a scaling factor, and a displacement.
* R - The mod field of the ModR/M byte may refer only to a general register.
* S - The reg field of the ModR/M byte selects a segment register.
* T - The reg field of the ModR/M byte selects a test register.
* U - The R/M field of the ModR/M byte selects a 128-bit XMM/256-bit YMM register.
* V - The reg field of the ModR/M byte selects a 128-bit XMM/256-bit YMM register.
* W - A ModR/M byte follows the opcode and specifies the operand. The
* operand is either a 128-bit XMM/256-bit YMM register or a memory address.
* If it is a memory address, the address is computed from a segment
* register and any of the following values: a base register, an
* index register, a scaling factor, and a displacement.
* X - Memory addressed by the DS:rSI register pair.
* Y - Memory addressed by the ES:rDI register pair.
*/
/*
* Codes for Operand Type:
* ----------------------
* a - Two one-word operands in memory or two double-word operands in
* memory, depending on operand-size attribute (used only by the BOUND
* instruction).
* b - Byte, regardless of operand-size attribute.
* d - Doubleword, regardless of operand-size attribute.
* dq - Double-quadword, regardless of operand-size attribute.
* p - 32-bit or 48-bit pointer, depending on operand-size attribute.
* pd - 128-bit/256-bit packed double-precision floating-point data.
* pi - Quadword MMX technology register (packed integer)
* ps - 128-bit/256-bit packed single-precision floating-point data.
* q - Quadword, regardless of operand-size attribute.
* s - 6-byte or 10-byte pseudo-descriptor.
* si - Doubleword integer register (scalar integer)
* ss - Scalar element of a packed single-precision floating data.
* sd - Scalar element of a packed double-precision floating data.
* v - Word, doubleword or quadword, depending on operand-size attribute.
* w - Word, regardless of operand-size attr.
* y - Doubleword or quadword (in 64-bit mode) depending on 32/64 bit
* operand size.
*/
// far call/jmp
void Apw(const x86_insn *insn);
void Apd(const x86_insn *insn);
// 8-bit general purpose registers
void AL_Reg(const x86_insn *insn);
void CL_Reg(const x86_insn *insn);
// 16-bit general purpose registers
void AX_Reg(const x86_insn *insn);
void DX_Reg(const x86_insn *insn);
// 32-bit general purpose registers
void EAX_Reg(const x86_insn *insn);
// 64-bit general purpose registers
void RAX_Reg(const x86_insn *insn);
void RCX_Reg(const x86_insn *insn);
// segment registers
void CS(const x86_insn *insn);
void DS(const x86_insn *insn);
void ES(const x86_insn *insn);
void SS(const x86_insn *insn);
void FS(const x86_insn *insn);
void GS(const x86_insn *insn);
// segment registers
void Sw(const x86_insn *insn);
// control register
void Cd(const x86_insn *insn);
void Cq(const x86_insn *insn);
// debug register
void Dd(const x86_insn *insn);
void Dq(const x86_insn *insn);
// 8-bit general purpose register
void Reg8(const x86_insn *insn);
// 16-bit general purpose register
void RX(const x86_insn *insn);
// 32-bit general purpose register
void ERX(const x86_insn *insn);
// 64-bit general purpose register
void RRX(const x86_insn *insn);
// general purpose register or memory operand
void Eb(const x86_insn *insn);
void Ew(const x86_insn *insn);
void Ed(const x86_insn *insn);
void Eq(const x86_insn *insn);
void Ey(const x86_insn *insn);
void Ebd(const x86_insn *insn);
void Ewd(const x86_insn *insn);
void Edq(const x86_insn *insn);
// general purpose register
void Gb(const x86_insn *insn);
void Gw(const x86_insn *insn);
void Gd(const x86_insn *insn);
void Gq(const x86_insn *insn);
void Gy(const x86_insn *insn);
// vex encoded general purpose register
void By(const x86_insn *insn);
// immediate
void I1(const x86_insn *insn);
void Ib(const x86_insn *insn);
void Iw(const x86_insn *insn);
void Id(const x86_insn *insn);
void Iq(const x86_insn *insn);
// double immediate
void IbIb(const x86_insn *insn);
void IwIb(const x86_insn *insn);
// sign extended immediate
void sIbw(const x86_insn *insn);
void sIbd(const x86_insn *insn);
void sIbq(const x86_insn *insn);
void sIdq(const x86_insn *insn);
// floating point
void ST0(const x86_insn *insn);
void STi(const x86_insn *insn);
// general purpose register
void Rw(const x86_insn *insn);
void Rd(const x86_insn *insn);
void Rq(const x86_insn *insn);
void Ry(const x86_insn *insn);
// mmx register
void Pq(const x86_insn *insn);
// mmx register or memory operand
void Qd(const x86_insn *insn);
void Qq(const x86_insn *insn);
void Vq(const x86_insn *insn);
void Nq(const x86_insn *insn);
// xmm/ymm register
void Ups(const x86_insn *insn);
void Upd(const x86_insn *insn);
void Udq(const x86_insn *insn);
void Uq(const x86_insn *insn);
void Vdq(const x86_insn *insn);
void Vss(const x86_insn *insn);
void Vsd(const x86_insn *insn);
void Vps(const x86_insn *insn);
void Vpd(const x86_insn *insn);
// xmm/ymm register through imm byte
void VIb(const x86_insn *insn);
// xmm/ymm register or memory operand
void Wb(const x86_insn *insn);
void Ww(const x86_insn *insn);
void Wd(const x86_insn *insn);
void Wq(const x86_insn *insn);
void Wdq(const x86_insn *insn);
void Wss(const x86_insn *insn);
void Wsd(const x86_insn *insn);
void Wps(const x86_insn *insn);
void Wpd(const x86_insn *insn);
// vex encoded xmm/ymm register
void Hdq(const x86_insn *insn);
void Hps(const x86_insn *insn);
void Hpd(const x86_insn *insn);
void Hss(const x86_insn *insn);
void Hsd(const x86_insn *insn);
// direct memory access
void OP_O(const x86_insn *insn, unsigned size);
void Ob(const x86_insn *insn);
void Ow(const x86_insn *insn);
void Od(const x86_insn *insn);
void Oq(const x86_insn *insn);
// memory operand
void OP_M(const x86_insn *insn, unsigned size);
void Ma(const x86_insn *insn);
void Mp(const x86_insn *insn);
void Ms(const x86_insn *insn);
void Mx(const x86_insn *insn);
void Mb(const x86_insn *insn);
void Mw(const x86_insn *insn);
void Md(const x86_insn *insn);
void Mq(const x86_insn *insn);
void Mt(const x86_insn *insn);
void Mdq(const x86_insn *insn);
void Mps(const x86_insn *insn);
void Mpd(const x86_insn *insn);
void Mss(const x86_insn *insn);
void Msd(const x86_insn *insn);
// gather VSib
void VSib(const x86_insn *insn);
// string instructions
void OP_X(const x86_insn *insn, unsigned size);
void Xb(const x86_insn *insn);
void Xw(const x86_insn *insn);
void Xd(const x86_insn *insn);
void Xq(const x86_insn *insn);
// string instructions
void OP_Y(const x86_insn *insn, unsigned size);
void Yb(const x86_insn *insn);
void Yw(const x86_insn *insn);
void Yd(const x86_insn *insn);
void Yq(const x86_insn *insn);
// maskmovdq/maskmovdqu
void OP_sY(const x86_insn *insn, unsigned size);
void sYq(const x86_insn *insn);
void sYdq(const x86_insn *insn);
// jump offset
void Jb(const x86_insn *insn);
void Jw(const x86_insn *insn);
void Jd(const x86_insn *insn);
};
#endif
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