| /**************************************************************************** |
| * |
| * Realmode X86 Emulator Library |
| * |
| * Copyright (C) 1996-1999 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 */ |
