1*4882a593Smuzhiyun /**************************************************************************** 2*4882a593Smuzhiyun * 3*4882a593Smuzhiyun * Realmode X86 Emulator Library 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1991-2004 SciTech Software, Inc. 6*4882a593Smuzhiyun * Copyright (C) David Mosberger-Tang 7*4882a593Smuzhiyun * Copyright (C) 1999 Egbert Eich 8*4882a593Smuzhiyun * 9*4882a593Smuzhiyun * ======================================================================== 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * Permission to use, copy, modify, distribute, and sell this software and 12*4882a593Smuzhiyun * its documentation for any purpose is hereby granted without fee, 13*4882a593Smuzhiyun * provided that the above copyright notice appear in all copies and that 14*4882a593Smuzhiyun * both that copyright notice and this permission notice appear in 15*4882a593Smuzhiyun * supporting documentation, and that the name of the authors not be used 16*4882a593Smuzhiyun * in advertising or publicity pertaining to distribution of the software 17*4882a593Smuzhiyun * without specific, written prior permission. The authors makes no 18*4882a593Smuzhiyun * representations about the suitability of this software for any purpose. 19*4882a593Smuzhiyun * It is provided "as is" without express or implied warranty. 20*4882a593Smuzhiyun * 21*4882a593Smuzhiyun * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 22*4882a593Smuzhiyun * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 23*4882a593Smuzhiyun * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 24*4882a593Smuzhiyun * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 25*4882a593Smuzhiyun * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 26*4882a593Smuzhiyun * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 27*4882a593Smuzhiyun * PERFORMANCE OF THIS SOFTWARE. 28*4882a593Smuzhiyun * 29*4882a593Smuzhiyun * ======================================================================== 30*4882a593Smuzhiyun * 31*4882a593Smuzhiyun * Language: ANSI C 32*4882a593Smuzhiyun * Environment: Any 33*4882a593Smuzhiyun * Developer: Kendall Bennett 34*4882a593Smuzhiyun * 35*4882a593Smuzhiyun * Description: Header file for instruction decoding logic. 36*4882a593Smuzhiyun * 37*4882a593Smuzhiyun ****************************************************************************/ 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #ifndef __X86EMU_DECODE_H 40*4882a593Smuzhiyun #define __X86EMU_DECODE_H 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /*---------------------- Macros and type definitions ----------------------*/ 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun /* Instruction Decoding Stuff */ 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun #define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl) 47*4882a593Smuzhiyun #define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r) 48*4882a593Smuzhiyun #define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r) 49*4882a593Smuzhiyun #define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r) 50*4882a593Smuzhiyun #define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun /*-------------------------- Function Prototypes --------------------------*/ 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #ifdef __cplusplus 55*4882a593Smuzhiyun extern "C" { /* Use "C" linkage when in C++ mode */ 56*4882a593Smuzhiyun #endif 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun void x86emu_intr_raise (u8 type); 59*4882a593Smuzhiyun void fetch_decode_modrm (int *mod,int *regh,int *regl); 60*4882a593Smuzhiyun u8 fetch_byte_imm (void); 61*4882a593Smuzhiyun u16 fetch_word_imm (void); 62*4882a593Smuzhiyun u32 fetch_long_imm (void); 63*4882a593Smuzhiyun u8 fetch_data_byte (uint offset); 64*4882a593Smuzhiyun u8 fetch_data_byte_abs (uint segment, uint offset); 65*4882a593Smuzhiyun u16 fetch_data_word (uint offset); 66*4882a593Smuzhiyun u16 fetch_data_word_abs (uint segment, uint offset); 67*4882a593Smuzhiyun u32 fetch_data_long (uint offset); 68*4882a593Smuzhiyun u32 fetch_data_long_abs (uint segment, uint offset); 69*4882a593Smuzhiyun void store_data_byte (uint offset, u8 val); 70*4882a593Smuzhiyun void store_data_byte_abs (uint segment, uint offset, u8 val); 71*4882a593Smuzhiyun void store_data_word (uint offset, u16 val); 72*4882a593Smuzhiyun void store_data_word_abs (uint segment, uint offset, u16 val); 73*4882a593Smuzhiyun void store_data_long (uint offset, u32 val); 74*4882a593Smuzhiyun void store_data_long_abs (uint segment, uint offset, u32 val); 75*4882a593Smuzhiyun u8* decode_rm_byte_register(int reg); 76*4882a593Smuzhiyun u16* decode_rm_word_register(int reg); 77*4882a593Smuzhiyun u32* decode_rm_long_register(int reg); 78*4882a593Smuzhiyun u16* decode_rm_seg_register(int reg); 79*4882a593Smuzhiyun unsigned decode_rm00_address(int rm); 80*4882a593Smuzhiyun unsigned decode_rm01_address(int rm); 81*4882a593Smuzhiyun unsigned decode_rm10_address(int rm); 82*4882a593Smuzhiyun unsigned decode_rmXX_address(int mod, int rm); 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #ifdef __cplusplus 85*4882a593Smuzhiyun } /* End of "C" linkage for C++ */ 86*4882a593Smuzhiyun #endif 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun #endif /* __X86EMU_DECODE_H */ 89