| /**************************************************************************** | |
| * | |
| * Realmode X86 Emulator Library | |
| * | |
| * Copyright (C) 1991-2004 SciTech Software, Inc. | |
| * Copyright (C) David Mosberger-Tang | |
| * Copyright (C) 1999 Egbert Eich | |
| * | |
| * ======================================================================== | |
| * | |
| * Permission to use, copy, modify, distribute, and sell this software and | |
| * its documentation for any purpose is hereby granted without fee, | |
| * provided that the above copyright notice appear in all copies and that | |
| * both that copyright notice and this permission notice appear in | |
| * supporting documentation, and that the name of the authors not be used | |
| * in advertising or publicity pertaining to distribution of the software | |
| * without specific, written prior permission. The authors makes no | |
| * representations about the suitability of this software for any purpose. | |
| * It is provided "as is" without express or implied warranty. | |
| * | |
| * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
| * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
| * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
| * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF | |
| * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | |
| * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
| * PERFORMANCE OF THIS SOFTWARE. | |
| * | |
| * ======================================================================== | |
| * | |
| * Language: ANSI C | |
| * Environment: Any | |
| * Developer: Kendall Bennett | |
| * | |
| * Description: Header file for instruction decoding logic. | |
| * | |
| ****************************************************************************/ | |
| #ifndef __X86EMU_DECODE_H | |
| #define __X86EMU_DECODE_H | |
| /*---------------------- Macros and type definitions ----------------------*/ | |
| /* Instruction Decoding Stuff */ | |
| #define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl) | |
| #define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r) | |
| #define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r) | |
| #define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r) | |
| #define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK | |
| /*-------------------------- Function Prototypes --------------------------*/ | |
| #ifdef __cplusplus | |
| extern "C" { /* Use "C" linkage when in C++ mode */ | |
| #endif | |
| void x86emu_intr_raise (u8 type); | |
| void fetch_decode_modrm (int *mod,int *regh,int *regl); | |
| u8 fetch_byte_imm (void); | |
| u16 fetch_word_imm (void); | |
| u32 fetch_long_imm (void); | |
| u8 fetch_data_byte (uint offset); | |
| u8 fetch_data_byte_abs (uint segment, uint offset); | |
| u16 fetch_data_word (uint offset); | |
| u16 fetch_data_word_abs (uint segment, uint offset); | |
| u32 fetch_data_long (uint offset); | |
| u32 fetch_data_long_abs (uint segment, uint offset); | |
| void store_data_byte (uint offset, u8 val); | |
| void store_data_byte_abs (uint segment, uint offset, u8 val); | |
| void store_data_word (uint offset, u16 val); | |
| void store_data_word_abs (uint segment, uint offset, u16 val); | |
| void store_data_long (uint offset, u32 val); | |
| void store_data_long_abs (uint segment, uint offset, u32 val); | |
| u8* decode_rm_byte_register(int reg); | |
| u16* decode_rm_word_register(int reg); | |
| u32* decode_rm_long_register(int reg); | |
| u16* decode_rm_seg_register(int reg); | |
| unsigned decode_rm00_address(int rm); | |
| unsigned decode_rm01_address(int rm); | |
| unsigned decode_rm10_address(int rm); | |
| unsigned decode_rmXX_address(int mod, int rm); | |
| #ifdef __cplusplus | |
| } /* End of "C" linkage for C++ */ | |
| #endif | |
| #endif /* __X86EMU_DECODE_H */ |