📄 disasm.h
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// Free Disassembler and Assembler -- Header file
//
// Copyright (C) 2001 Oleh Yuschuk
//
// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#pragma once
#ifndef MAINPROG
#define odunique extern
#else
#define odunique
#endif
#pragma warning(disable:4309)//关闭截断常数值警告
// If you prefere Borland, this will force necessary setting (but, as a side
// effect, may cause plenty of warnings if other include files will be compiled
// with different options):
#ifdef __BORLANDC__
#pragma option -K // Unsigned char
#endif
//
//#if (char)0xFF != 255
//#error Please set default char type to unsigned
//#endif
#define NEGLIMIT (-16384) // Limit to display constans as signed
#define PSEUDOOP 128 // Base for pseudooperands
#define TEXTLEN 256 // Maximal length of text string
// Special command features.
#define WW 0x01 // Bit W (size of operand)
#define SS 0x02 // Bit S (sign extention of immediate)
#define WS 0x03 // Bits W and S
#define W3 0x08 // Bit W at position 3
#define CC 0x10 // Conditional jump
#define FF 0x20 // Forced 16-bit size
#define LL 0x40 // Conditional loop
#define PR 0x80 // Protected command
#define WP 0x81 // I/O command with bit W
// All possible types of operands in 80x86. A bit more than you expected, he?
#define NNN 0 // No operand \\无操作
#define REG 1 // Integer register in Reg field \\积存器结构中的寄存器
#define RCM 2 // Integer register in command byte \\命令字节中的寄存器
#define RG4 3 // Integer 4-byte register in Reg field \\用不到PMOVMSKB指令
#define RAC 4 // Accumulator (AL/AX/EAX, implicit) \\暗示累加器?
#define RAX 5 // AX (2-byte, implicit) \\暗示AX
#define RDX 6 // DX (16-bit implicit port address)
#define RCL 7 // Implicit CL register (for shifts) \\暗示CL寄存器
#define RS0 8 // Top of FPU stack (ST(0), implicit)
#define RST 9 // FPU register (ST(i)) in command byte
#define RMX 10 // MMX register MMx
#define R3D 11 // 3DNow! register MMx
#define MRG 12 // Memory/register in ModRM byte
#define MR1 13 // 1-byte memory/register in ModRM byte
#define MR2 14 // 2-byte memory/register in ModRM byte
#define MR4 15 // 4-byte memory/register in ModRM byte
#define RR4 16 // 4-byte memory/register (register only)
#define MR8 17 // 8-byte memory/MMX register in ModRM
#define RR8 18 // 8-byte MMX register only in ModRM
#define MRD 19 // 8-byte memory/3DNow! register in ModRM
#define RRD 20 // 8-byte memory/3DNow! (register only)
#define MRJ 21 // Memory/reg in ModRM as JUMP target
#define MMA 22 // Memory address in ModRM byte for LEA
#define MML 23 // Memory in ModRM byte (for LES)
#define MMS 24 // Memory in ModRM byte (as SEG:OFFS)
#define MM6 25 // Memory in ModRm (6-byte descriptor)
#define MMB 26 // Two adjacent memory locations (BOUND)
#define MD2 27 // Memory in ModRM (16-bit integer)
#define MB2 28 // Memory in ModRM (16-bit binary)
#define MD4 29 // Memory in ModRM byte (32-bit integer)
#define MD8 30 // Memory in ModRM byte (64-bit integer)
#define MDA 31 // Memory in ModRM byte (80-bit BCD)
#define MF4 32 // Memory in ModRM byte (32-bit float)
#define MF8 33 // Memory in ModRM byte (64-bit float)
#define MFA 34 // Memory in ModRM byte (80-bit float)
#define MFE 35 // Memory in ModRM byte (FPU environment)
#define MFS 36 // Memory in ModRM byte (FPU state)
#define MFX 37 // Memory in ModRM byte (ext. FPU state)
#define MSO 38 // Source in string op's ([ESI])
#define MDE 39 // Destination in string op's ([EDI])
#define MXL 40 // XLAT operand ([EBX+AL])
#define IMM 41 // Immediate data (8 or 16/32)
#define IMU 42 // Immediate unsigned data (8 or 16/32)
#define VXD 43 // VxD service
#define IMX 44 // Immediate sign-extendable byte
#define C01 45 // Implicit constant 1 (for shifts)
#define IMS 46 // Immediate byte (for shifts)
#define IM1 47 // Immediate byte
#define IM2 48 // Immediate word (ENTER/RET)
#define IMA 49 // Immediate absolute near data address
#define JOB 50 // Immediate byte offset (for jumps)
#define JOW 51 // Immediate full offset (for jumps)
#define JMF 52 // Immediate absolute far jump/call addr
#define SGM 53 // Segment register in ModRM byte
#define SCM 54 // 段寄存器 Segment register in command byte
#define CRX 55 // CRx控制寄存器 Control register CRx
#define DRX 56 // DRx调试寄存器 Debug register DRx
// Pseudooperands (implicit operands, never appear in assembler commands). Must
// have index equal to or exceeding PSEUDOOP.
#define PRN (PSEUDOOP+0) // Near return address
#define PRF (PSEUDOOP+1) // Far return address
#define PAC (PSEUDOOP+2) // Accumulator (AL/AX/EAX)
#define PAH (PSEUDOOP+3) // AH (in LAHF/SAHF commands)
#define PFL (PSEUDOOP+4) // Lower byte of flags (in LAHF/SAHF)
#define PS0 (PSEUDOOP+5) // Top of FPU stack (ST(0))
#define PS1 (PSEUDOOP+6) // ST(1)
#define PCX (PSEUDOOP+7) // CX/ECX
#define PDI (PSEUDOOP+8) // EDI (in MMX extentions)
// Errors detected during command disassembling.
#define DAE_NOERR 0 // No error
#define DAE_BADCMD 1 // Unrecognized command
#define DAE_CROSS 2 // Command crosses end of memory block
#define DAE_BADSEG 3 // Undefined segment register
#define DAE_MEMORY 4 // Register where only memory allowed
#define DAE_REGISTER 5 // Memory where only register allowed
#define DAE_INTERN 6 // Internal error
typedef unsigned char uchar; // Unsigned character (byte)
typedef unsigned short ushort; // Unsigned short
typedef unsigned int uint; // Unsigned integer
typedef unsigned long ulong; // Unsigned long
typedef struct t_addrdec
{
int defseg;
char *descr;
} t_addrdec;
//命令数据
typedef struct t_cmddata
{
ulong mask; // Mask for first 4 bytes of the command
ulong code; // Compare masked bytes with this
char len; // Length of the main command code
char bits; // Special bits within the command
char arg1,arg2,arg3; // Types of possible arguments
char type; // C_xxx + additional information
char *name; // Symbolic name for this command
} t_cmddata;
// Initialized constant data structures used by all programs from assembler
// package. Contain names of register, register combinations or commands and
// their properties.
extern const char *regname[3][9];
extern const char *segname[8];
extern const char *sizename[11];
extern const t_addrdec addr16[8];
extern const t_addrdec addr32[8];
extern const char *fpuname[9];
extern const char *mmxname[9];
extern const char *crname[9];
extern const char *drname[9];
extern const char *condition[16];
extern const t_cmddata cmddata[];//可用结构数组
extern const t_cmddata vxdcmd;
extern const t_cmddata dangerous[];
////////////////////////////////////////////////////////////////////////////////
//////////////////// ASSEMBLER, DISASSEMBLER AND EXPRESSIONS ///////////////////
#define MAXCMDSIZE 16 // Maximal length of 80x86 command
#define MAXCALSIZE 8 // Max length of CALL without prefixes
#define NMODELS 8 // Number of assembler search models
#define INT3 0xCC // Code of 1-byte breakpoint
#define NOP 0x90 // Code of 1-byte NOP command
#define TRAPFLAG 0x00000100 // Trap flag in CPU flag register
#define REG_EAX 0 // Indexes of general-purpose registers
#define REG_ECX 1 // in t_reg.
#define REG_EDX 2
#define REG_EBX 3
#define REG_ESP 4
#define REG_EBP 5
#define REG_ESI 6
#define REG_EDI 7
#define SEG_UNDEF -1 //没有段寄存器
#define SEG_ES 0 // Indexes of segment/selector registers
#define SEG_CS 1
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