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Stefan Reinauer38cd29e2009-08-11 21:28:25 +00001/****************************************************************************
2*
3* Realmode X86 Emulator Library
4*
5* Copyright (C) 1996-1999 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
55extern "C" { /* Use "C" linkage when in C++ mode */
56#endif
57
58void x86emu_intr_raise (u8 type);
59void fetch_decode_modrm (int *mod,int *regh,int *regl);
60u8 fetch_byte_imm (void);
61u16 fetch_word_imm (void);
62u32 fetch_long_imm (void);
63u8 fetch_data_byte (uint offset);
64u8 fetch_data_byte_abs (uint segment, uint offset);
65u16 fetch_data_word (uint offset);
66u16 fetch_data_word_abs (uint segment, uint offset);
67u32 fetch_data_long (uint offset);
68u32 fetch_data_long_abs (uint segment, uint offset);
69void store_data_byte (uint offset, u8 val);
70void store_data_byte_abs (uint segment, uint offset, u8 val);
71void store_data_word (uint offset, u16 val);
72void store_data_word_abs (uint segment, uint offset, u16 val);
73void store_data_long (uint offset, u32 val);
74void store_data_long_abs (uint segment, uint offset, u32 val);
75u8* decode_rm_byte_register(int reg);
76u16* decode_rm_word_register(int reg);
77u32* decode_rm_long_register(int reg);
78u16* decode_rm_seg_register(int reg);
Martin Roth38ddbfb2019-10-23 21:41:00 -060079unsigned int decode_rm00_address(int rm);
80unsigned int decode_rm01_address(int rm);
81unsigned int decode_rm10_address(int rm);
82unsigned int decode_rmXX_address(int mod, int rm);
Stefan Reinauer38cd29e2009-08-11 21:28:25 +000083
84#ifdef __cplusplus
85} /* End of "C" linkage for C++ */
86#endif
87
88#endif /* __X86EMU_DECODE_H */