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This is a BIOS emulator, porting from SciTech for u-boot, mainly for

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ATI video card BIOS. and can be used for x86 code emulation by some
modifications.

Signed-off-by: Jason Jin <Jason.jin@freescale.com>
This commit is contained in:
Jason Jin 2007-07-06 08:34:56 +08:00 • committed by Wolfgang Denk
parent 5072188aca
commit ece92f8505
21 changed files with 16008 additions and 0 deletions
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88
drivers/bios_emulator/include/x86emu/decode.h Normal file
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/****************************************************************************
*
* 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 */