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This is a BIOS emulator, porting from SciTech for u-boot, mainly for
ATI video card BIOS. and can be used for x86 code emulation by some modifications. Signed-off-by: Jason Jin <Jason.jin@freescale.com>
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Jason Jin
Wolfgang Denk
parent
5072188aca
commit
ece92f8505
21 changed files with 16008 additions and 0 deletions
209
drivers/bios_emulator/include/x86emu/debug.h
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209
drivers/bios_emulator/include/x86emu/debug.h
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/****************************************************************************
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*
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* Realmode X86 Emulator Library
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*
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* Copyright (C) 1991-2004 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 debug definitions.
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*
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****************************************************************************/
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#ifndef __X86EMU_DEBUG_H
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#define __X86EMU_DEBUG_H
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/*---------------------- Macros and type definitions ----------------------*/
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/* checks to be enabled for "runtime" */
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#define CHECK_IP_FETCH_F 0x1
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#define CHECK_SP_ACCESS_F 0x2
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#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */
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#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset */
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#ifdef DEBUG
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# define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F)
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# define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F)
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# define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F)
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# define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F)
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#else
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# define CHECK_IP_FETCH()
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# define CHECK_SP_ACCESS()
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# define CHECK_MEM_ACCESS()
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# define CHECK_DATA_ACCESS()
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#endif
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#ifdef DEBUG
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# define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F)
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# define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F)
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# define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F)
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# define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F)
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# define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F)
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# define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F)
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# define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F)
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# define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_CS_IP)
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# define DEBUG_FS() (M.x86.debug & DEBUG_FS_F)
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# define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F)
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# define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F)
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# define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F)
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# define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F)
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# define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F)
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# define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F)
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# define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F)
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# define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F)
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#else
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# define DEBUG_INSTRUMENT() 0
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# define DEBUG_DECODE() 0
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# define DEBUG_TRACE() 0
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# define DEBUG_STEP() 0
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# define DEBUG_DISASSEMBLE() 0
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# define DEBUG_BREAK() 0
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# define DEBUG_SVC() 0
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# define DEBUG_SAVE_IP_CS() 0
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# define DEBUG_FS() 0
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# define DEBUG_PROC() 0
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# define DEBUG_SYSINT() 0
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# define DEBUG_TRACECALL() 0
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# define DEBUG_TRACECALLREGS() 0
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# define DEBUG_SYS() 0
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# define DEBUG_MEM_TRACE() 0
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# define DEBUG_IO_TRACE() 0
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# define DEBUG_DECODE_NOPRINT() 0
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#endif
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#ifdef DEBUG
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# define DECODE_PRINTF(x) if (DEBUG_DECODE()) \
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x86emu_decode_printf(x)
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# define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \
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x86emu_decode_printf2(x,y)
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/*
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* The following allow us to look at the bytes of an instruction. The
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* first INCR_INSTRN_LEN, is called everytime bytes are consumed in
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* the decoding process. The SAVE_IP_CS is called initially when the
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* major opcode of the instruction is accessed.
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*/
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#define INC_DECODED_INST_LEN(x) \
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if (DEBUG_DECODE()) \
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x86emu_inc_decoded_inst_len(x)
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#define SAVE_IP_CS(x,y) \
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if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \
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| DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \
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M.x86.saved_cs = x; \
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M.x86.saved_ip = y; \
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}
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#else
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# define INC_DECODED_INST_LEN(x)
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# define DECODE_PRINTF(x)
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# define DECODE_PRINTF2(x,y)
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# define SAVE_IP_CS(x,y)
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#endif
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#ifdef DEBUG
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#define TRACE_REGS() \
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if (DEBUG_DISASSEMBLE()) { \
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x86emu_just_disassemble(); \
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goto EndOfTheInstructionProcedure; \
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} \
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if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs()
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#else
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# define TRACE_REGS()
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#endif
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#ifdef DEBUG
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# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step()
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#else
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# define SINGLE_STEP()
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#endif
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#define TRACE_AND_STEP() \
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TRACE_REGS(); \
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SINGLE_STEP()
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#ifdef DEBUG
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# define START_OF_INSTR()
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# define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr();
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# define END_OF_INSTR_NO_TRACE() x86emu_end_instr();
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#else
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# define START_OF_INSTR()
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# define END_OF_INSTR()
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# define END_OF_INSTR_NO_TRACE()
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#endif
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#ifdef DEBUG
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# define CALL_TRACE(u,v,w,x,s) \
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if (DEBUG_TRACECALLREGS()) \
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x86emu_dump_regs(); \
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if (DEBUG_TRACECALL()) \
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printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x);
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# define RETURN_TRACE(n,u,v) \
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if (DEBUG_TRACECALLREGS()) \
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x86emu_dump_regs(); \
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if (DEBUG_TRACECALL()) \
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printk("%04x:%04x: %s\n",u,v,n);
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#else
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# define CALL_TRACE(u,v,w,x,s)
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# define RETURN_TRACE(n,u,v)
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#endif
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#ifdef DEBUG
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#define DB(x) x
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#else
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#define DB(x)
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#endif
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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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extern void x86emu_inc_decoded_inst_len(int x);
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extern void x86emu_decode_printf(char *x);
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extern void x86emu_decode_printf2(char *x, int y);
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extern void x86emu_just_disassemble(void);
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extern void x86emu_single_step(void);
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extern void x86emu_end_instr(void);
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extern void x86emu_dump_regs(void);
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extern void x86emu_dump_xregs(void);
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extern void x86emu_print_int_vect(u16 iv);
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extern void x86emu_instrument_instruction(void);
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extern void x86emu_check_ip_access(void);
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extern void x86emu_check_sp_access(void);
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extern void x86emu_check_mem_access(u32 p);
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extern void x86emu_check_data_access(uint s, uint o);
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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_DEBUG_H */
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