// 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


#ifndef MAINPROG
#define unique extern
#else
#define unique
#endif

// 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
#define REG            1               // Integer register in Reg field
#define RCM            2               // Integer register in command byte
#define RG4            3               // Integer 4-byte register in Reg field
#define RAC            4               // Accumulator (AL/AX/EAX, implicit)
#define RAX            5               // AX (2-byte, implicit)
#define RDX            6               // DX (16-bit implicit port address)
#define RCL            7               // Implicit CL register (for shifts)
#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              // Segment register in command byte
#define CRX            55              // Control register CRx
#define DRX            56              // 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;

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[];
extern const t_cmddata vxdcmd;
extern const t_cmddata dangerous[];