| Jason Jin | a63ce95 | 2007-07-06 08:34:56 +0800 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | * |
| 3 | * Realmode X86 Emulator Library |
| 4 | * |
| 5 | * Copyright (C) 1991-2004 SciTech Software, Inc. |
| 6 | * Copyright (C) David Mosberger-Tang |
| 7 | * Copyright (C) 1999 Egbert Eich |
| 8 | * |
| 9 | * ======================================================================== |
| 10 | * |
| 11 | * Permission to use, copy, modify, distribute, and sell this software and |
| 12 | * its documentation for any purpose is hereby granted without fee, |
| 13 | * provided that the above copyright notice appear in all copies and that |
| 14 | * both that copyright notice and this permission notice appear in |
| 15 | * supporting documentation, and that the name of the authors not be used |
| 16 | * in advertising or publicity pertaining to distribution of the software |
| 17 | * without specific, written prior permission. The authors makes no |
| 18 | * representations about the suitability of this software for any purpose. |
| 19 | * It is provided "as is" without express or implied warranty. |
| 20 | * |
| 21 | * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 22 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 23 | * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 24 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF |
| 25 | * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR |
| 26 | * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 27 | * PERFORMANCE OF THIS SOFTWARE. |
| 28 | * |
| 29 | * ======================================================================== |
| 30 | * |
| 31 | * Language: ANSI C |
| 32 | * Environment: Any |
| 33 | * Developer: Kendall Bennett |
| 34 | * |
| 35 | * Description: Header file for instruction decoding logic. |
| 36 | * |
| 37 | ****************************************************************************/ |
| 38 | |
| 39 | #ifndef __X86EMU_DECODE_H |
| 40 | #define __X86EMU_DECODE_H |
| 41 | |
| 42 | /*---------------------- Macros and type definitions ----------------------*/ |
| 43 | |
| 44 | /* Instruction Decoding Stuff */ |
| 45 | |
| 46 | #define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl) |
| 47 | #define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r) |
| 48 | #define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r) |
| 49 | #define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r) |
| 50 | #define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK |
| 51 | |
| 52 | /*-------------------------- Function Prototypes --------------------------*/ |
| 53 | |
| 54 | #ifdef __cplusplus |
| 55 | extern "C" { /* Use "C" linkage when in C++ mode */ |
| 56 | #endif |
| 57 | |
| 58 | void x86emu_intr_raise (u8 type); |
| 59 | void fetch_decode_modrm (int *mod,int *regh,int *regl); |
| 60 | u8 fetch_byte_imm (void); |
| 61 | u16 fetch_word_imm (void); |
| 62 | u32 fetch_long_imm (void); |
| 63 | u8 fetch_data_byte (uint offset); |
| 64 | u8 fetch_data_byte_abs (uint segment, uint offset); |
| 65 | u16 fetch_data_word (uint offset); |
| 66 | u16 fetch_data_word_abs (uint segment, uint offset); |
| 67 | u32 fetch_data_long (uint offset); |
| 68 | u32 fetch_data_long_abs (uint segment, uint offset); |
| 69 | void store_data_byte (uint offset, u8 val); |
| 70 | void store_data_byte_abs (uint segment, uint offset, u8 val); |
| 71 | void store_data_word (uint offset, u16 val); |
| 72 | void store_data_word_abs (uint segment, uint offset, u16 val); |
| 73 | void store_data_long (uint offset, u32 val); |
| 74 | void store_data_long_abs (uint segment, uint offset, u32 val); |
| 75 | u8* decode_rm_byte_register(int reg); |
| 76 | u16* decode_rm_word_register(int reg); |
| 77 | u32* decode_rm_long_register(int reg); |
| 78 | u16* decode_rm_seg_register(int reg); |
| 79 | unsigned decode_rm00_address(int rm); |
| 80 | unsigned decode_rm01_address(int rm); |
| 81 | unsigned decode_rm10_address(int rm); |
| 82 | unsigned decode_rmXX_address(int mod, int rm); |
| 83 | |
| 84 | #ifdef __cplusplus |
| 85 | } /* End of "C" linkage for C++ */ |
| 86 | #endif |
| 87 | |
| 88 | #endif /* __X86EMU_DECODE_H */ |