88 lines
3.6 KiB
C
88 lines
3.6 KiB
C
/****************************************************************************
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*
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* Realmode X86 Emulator Library
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*
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* Copyright (C) 1996-1999 SciTech Software, Inc.
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* Copyright (C) David Mosberger-Tang
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* Copyright (C) 1999 Egbert Eich
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*
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* ========================================================================
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of the authors not be used
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* in advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The authors makes no
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* representations about the suitability of this software for any purpose.
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* It is provided "as is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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* ========================================================================
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*
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* Language: ANSI C
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* Environment: Any
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* Developer: Kendall Bennett
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*
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* Description: Header file for instruction decoding logic.
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*
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****************************************************************************/
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#ifndef __X86EMU_DECODE_H
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#define __X86EMU_DECODE_H
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/*---------------------- Macros and type definitions ----------------------*/
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/* Instruction Decoding Stuff */
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#define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl)
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#define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r)
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#define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r)
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#define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r)
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#define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK
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/*-------------------------- Function Prototypes --------------------------*/
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#ifdef __cplusplus
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extern "C" { /* Use "C" linkage when in C++ mode */
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#endif
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void x86emu_intr_raise(u8 type);
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void fetch_decode_modrm(int *mod, int *regh, int *regl);
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u8 fetch_byte_imm(void);
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u16 fetch_word_imm(void);
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u32 fetch_long_imm(void);
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u8 fetch_data_byte(uint offset);
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u8 fetch_data_byte_abs(uint segment, uint offset);
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u16 fetch_data_word(uint offset);
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u16 fetch_data_word_abs(uint segment, uint offset);
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u32 fetch_data_long(uint offset);
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u32 fetch_data_long_abs(uint segment, uint offset);
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void store_data_byte(uint offset, u8 val);
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void store_data_byte_abs(uint segment, uint offset, u8 val);
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void store_data_word(uint offset, u16 val);
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void store_data_word_abs(uint segment, uint offset, u16 val);
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void store_data_long(uint offset, u32 val);
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void store_data_long_abs(uint segment, uint offset, u32 val);
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u8 *decode_rm_byte_register(int reg);
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u16 *decode_rm_word_register(int reg);
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u32 *decode_rm_long_register(int reg);
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u16 *decode_rm_seg_register(int reg);
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u32 decode_rm00_address(int rm);
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u32 decode_rm01_address(int rm);
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u32 decode_rm10_address(int rm);
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u32 decode_sib_address(int sib, int mod);
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#ifdef __cplusplus
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} /* End of "C" linkage for C++ */
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#endif
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#endif /* __X86EMU_DECODE_H */
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