added x86 emulator (for Radeon BIOS)
This commit is contained in:
Markus Fröschle
200
BaS_gcc/include/x86emu.h
Normal file
200
BaS_gcc/include/x86emu.h
Normal file
@@ -0,0 +1,200 @@
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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) 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
|
||||
* 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 public specific functions.
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* Any application linking against us should only
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* include this header
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*
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****************************************************************************/
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/* $XFree86: xc/extras/x86emu/include/x86emu.h,v 1.2 2000/11/21 23:10:25 tsi Exp $ */
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#ifndef __X86EMU_X86EMU_H
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#define __X86EMU_X86EMU_H
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#ifdef SCITECH
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#include "scitech.h"
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#define X86API _ASMAPI
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#define X86APIP _ASMAPIP
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typedef int X86EMU_pioAddr;
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#else
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#include "bas_types.h"
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#define X86API
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#define X86APIP *
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#endif
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#include "x86regs.h"
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/*---------------------- Macros and type definitions ----------------------*/
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//#pragma pack(1)
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/****************************************************************************
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REMARKS:
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Data structure containing ponters to programmed I/O functions used by the
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emulator. This is used so that the user program can hook all programmed
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I/O for the emulator to handled as necessary by the user program. By
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default the emulator contains simple functions that do not do access the
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hardware in any way. To allow the emualtor access the hardware, you will
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need to override the programmed I/O functions using the X86EMU_setupPioFuncs
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function.
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HEADER:
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x86emu.h
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MEMBERS:
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inb - Function to read a byte from an I/O port
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inw - Function to read a word from an I/O port
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inl - Function to read a dword from an I/O port
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outb - Function to write a byte to an I/O port
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outw - Function to write a word to an I/O port
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outl - Function to write a dword to an I/O port
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****************************************************************************/
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typedef struct
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{
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uint8_t (X86APIP inb)(X86EMU_pioAddr addr);
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uint16_t (X86APIP inw)(X86EMU_pioAddr addr);
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uint32_t (X86APIP inl)(X86EMU_pioAddr addr);
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void (X86APIP outb)(X86EMU_pioAddr addr, uint8_t val);
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void (X86APIP outw)(X86EMU_pioAddr addr, uint16_t val);
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void (X86APIP outl)(X86EMU_pioAddr addr, uint32_t val);
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} X86EMU_pioFuncs;
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/****************************************************************************
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REMARKS:
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Data structure containing ponters to memory access functions used by the
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emulator. This is used so that the user program can hook all memory
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access functions as necessary for the emulator. By default the emulator
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contains simple functions that only access the internal memory of the
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emulator. If you need specialised functions to handle access to different
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types of memory (ie: hardware framebuffer accesses and BIOS memory access
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etc), you will need to override this using the X86EMU_setupMemFuncs
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function.
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HEADER:
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x86emu.h
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MEMBERS:
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rdb - Function to read a byte from an address
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rdw - Function to read a word from an address
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rdl - Function to read a dword from an address
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wrb - Function to write a byte to an address
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wrw - Function to write a word to an address
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wrl - Function to write a dword to an address
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****************************************************************************/
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typedef struct {
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uint8_t (X86APIP rdb)(uint32_t addr);
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uint16_t (X86APIP rdw)(uint32_t addr);
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uint32_t (X86APIP rdl)(uint32_t addr);
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void (X86APIP wrb)(uint32_t addr, uint8_t val);
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void (X86APIP wrw)(uint32_t addr, uint16_t val);
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void (X86APIP wrl)(uint32_t addr, uint32_t val);
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} X86EMU_memFuncs;
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/****************************************************************************
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Here are the default memory read and write
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function in case they are needed as fallbacks.
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***************************************************************************/
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extern uint8_t X86API rdb(uint32_t addr);
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extern uint16_t X86API rdw(uint32_t addr);
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extern uint32_t X86API rdl(uint32_t addr);
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extern void X86API wrb(uint32_t addr, uint8_t val);
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extern void X86API wrw(uint32_t addr, uint16_t val);
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extern void X86API wrl(uint32_t addr, uint32_t val);
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//#pragma pack()
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/*--------------------- type definitions -----------------------------------*/
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typedef void (X86APIP X86EMU_intrFuncs)(int num);
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extern X86EMU_intrFuncs _X86EMU_intrTab[256];
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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_setupMemFuncs(X86EMU_memFuncs *funcs);
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void X86EMU_setupPioFuncs(X86EMU_pioFuncs *funcs);
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void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]);
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void X86EMU_prepareForInt(int num);
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/* decode.c */
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void X86EMU_exec(void);
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void X86EMU_halt_sys(void);
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#ifdef DEBUG
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#define HALT_SYS() \
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DPRINT("halt_sys: file "); \
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DPRINT(__FILE__); \
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DPRINTVAL(", line ", __LINE__); \
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DPRINT("\r\n"); \
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X86EMU_halt_sys();
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#else
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#define HALT_SYS() X86EMU_halt_sys()
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#endif
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/* Debug options */
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#define DEBUG_DECODE_F 0x000001 /* print decoded instruction */
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#define DEBUG_TRACE_F 0x000002 /* dump regs before/after execution */
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#define DEBUG_STEP_F 0x000004
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#define DEBUG_DISASSEMBLE_F 0x000008
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#define DEBUG_BREAK_F 0x000010
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#define DEBUG_SVC_F 0x000020
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#define DEBUG_FS_F 0x000080
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#define DEBUG_PROC_F 0x000100
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#define DEBUG_SYSINT_F 0x000200 /* bios system interrupts. */
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#define DEBUG_TRACECALL_F 0x000400
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#define DEBUG_INSTRUMENT_F 0x000800
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#define DEBUG_MEM_TRACE_F 0x001000
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#define DEBUG_IO_TRACE_F 0x002000
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#define DEBUG_TRACECALL_REGS_F 0x004000
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#define DEBUG_DECODE_NOPRINT_F 0x008000
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#define DEBUG_SAVE_IP_CS_F 0x010000
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#define DEBUG_SYS_F (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F)
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void X86EMU_trace_regs(void);
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void X86EMU_trace_xregs(void);
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void X86EMU_dump_memory(uint16_t seg, uint16_t off, uint32_t amt);
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int X86EMU_trace_on(void);
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int X86EMU_trace_off(void);
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int X86EMU_set_debug(int debug);
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void X86EMU_setMemBase(void *base, unsigned long size);
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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_X86EMU_H */
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373
BaS_gcc/include/x86regs.h
Normal file
373
BaS_gcc/include/x86regs.h
Normal file
@@ -0,0 +1,373 @@
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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) 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
|
||||
* 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.
|
||||
*
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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 x86 register definitions.
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*
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****************************************************************************/
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/* $XFree86: xc/extras/x86emu/include/x86emu/regs.h,v 1.3 2001/10/28 03:32:25 tsi Exp $ */
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#ifndef __X86EMU_REGS_H
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#define __X86EMU_REGS_H
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/*---------------------- Macros and type definitions ----------------------*/
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//#pragma pack(1)
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/*
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* General EAX, EBX, ECX, EDX type registers. Note that for
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* portability, and speed, the issue of byte swapping is not addressed
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* in the registers. All registers are stored in the default format
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* available on the host machine. The only critical issue is that the
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* registers should line up EXACTLY in the same manner as they do in
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* the 386. That is:
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*
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* EAX & 0xff === AL
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* EAX & 0xffff == AX
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*
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* etc. The result is that alot of the calculations can then be
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* done using the native instruction set fully.
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*/
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#ifdef __BIG_ENDIAN__
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typedef struct {
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uint32_t e_reg;
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} I32_reg_t;
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typedef struct {
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uint16_t filler0, x_reg;
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} I16_reg_t;
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typedef struct {
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uint8_t filler0, filler1, h_reg, l_reg;
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} I8_reg_t;
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#else /* !__BIG_ENDIAN__ */
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typedef struct {
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uint32_t e_reg;
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} I32_reg_t;
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typedef struct {
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uint16_t x_reg;
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} I16_reg_t;
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typedef struct {
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uint8_t l_reg, h_reg;
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} I8_reg_t;
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#endif /* BIG_ENDIAN */
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typedef union {
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I32_reg_t I32_reg;
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I16_reg_t I16_reg;
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I8_reg_t I8_reg;
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} i386_general_register;
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struct i386_general_regs {
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i386_general_register A, B, C, D;
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};
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typedef struct i386_general_regs Gen_reg_t;
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struct i386_special_regs {
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i386_general_register SP, BP, SI, DI, IP;
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uint32_t FLAGS;
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};
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/*
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* Segment registers here represent the 16 bit quantities
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* CS, DS, ES, SS.
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*/
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struct i386_segment_regs {
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uint16_t CS, DS, SS, ES, FS, GS;
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};
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/* 8 bit registers */
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#define R_AH gen.A.I8_reg.h_reg
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#define R_AL gen.A.I8_reg.l_reg
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#define R_BH gen.B.I8_reg.h_reg
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#define R_BL gen.B.I8_reg.l_reg
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#define R_CH gen.C.I8_reg.h_reg
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#define R_CL gen.C.I8_reg.l_reg
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#define R_DH gen.D.I8_reg.h_reg
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#define R_DL gen.D.I8_reg.l_reg
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/* 16 bit registers */
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#define R_AX gen.A.I16_reg.x_reg
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#define R_BX gen.B.I16_reg.x_reg
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#define R_CX gen.C.I16_reg.x_reg
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#define R_DX gen.D.I16_reg.x_reg
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/* 32 bit extended registers */
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#define R_EAX gen.A.I32_reg.e_reg
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#define R_EBX gen.B.I32_reg.e_reg
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#define R_ECX gen.C.I32_reg.e_reg
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#define R_EDX gen.D.I32_reg.e_reg
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/* special registers */
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#define R_SP spc.SP.I16_reg.x_reg
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#define R_BP spc.BP.I16_reg.x_reg
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#define R_SI spc.SI.I16_reg.x_reg
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#define R_DI spc.DI.I16_reg.x_reg
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#define R_IP spc.IP.I16_reg.x_reg
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#define R_FLG spc.FLAGS
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/* special registers */
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#define R_SP spc.SP.I16_reg.x_reg
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#define R_BP spc.BP.I16_reg.x_reg
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#define R_SI spc.SI.I16_reg.x_reg
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#define R_DI spc.DI.I16_reg.x_reg
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#define R_IP spc.IP.I16_reg.x_reg
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#define R_FLG spc.FLAGS
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/* special registers */
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#define R_ESP spc.SP.I32_reg.e_reg
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#define R_EBP spc.BP.I32_reg.e_reg
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#define R_ESI spc.SI.I32_reg.e_reg
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#define R_EDI spc.DI.I32_reg.e_reg
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#define R_EIP spc.IP.I32_reg.e_reg
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#define R_EFLG spc.FLAGS
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/* segment registers */
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#define R_CS seg.CS
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#define R_DS seg.DS
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#define R_SS seg.SS
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#define R_ES seg.ES
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#define R_FS seg.FS
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#define R_GS seg.GS
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/* flag conditions */
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#define FB_CF 0x0001 /* CARRY flag */
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#define FB_PF 0x0004 /* PARITY flag */
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#define FB_AF 0x0010 /* AUX flag */
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#define FB_ZF 0x0040 /* ZERO flag */
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#define FB_SF 0x0080 /* SIGN flag */
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#define FB_TF 0x0100 /* TRAP flag */
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#define FB_IF 0x0200 /* INTERRUPT ENABLE flag */
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#define FB_DF 0x0400 /* DIR flag */
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#define FB_OF 0x0800 /* OVERFLOW flag */
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/* 80286 and above always have bit#1 set */
|
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#define F_ALWAYS_ON (0x0002) /* flag bits always on */
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/*
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* Define a mask for only those flag bits we will ever pass back
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* (via PUSHF)
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*/
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#define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF)
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/* following bits masked in to a 16bit quantity */
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#define F_CF 0x0001 /* CARRY flag */
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#define F_PF 0x0004 /* PARITY flag */
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#define F_AF 0x0010 /* AUX flag */
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#define F_ZF 0x0040 /* ZERO flag */
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#define F_SF 0x0080 /* SIGN flag */
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#define F_TF 0x0100 /* TRAP flag */
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#define F_IF 0x0200 /* INTERRUPT ENABLE flag */
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#define F_DF 0x0400 /* DIR flag */
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#define F_OF 0x0800 /* OVERFLOW flag */
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#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag))
|
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#define SET_FLAG(flag) (M.x86.R_FLG |= (flag))
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#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag))
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#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag))
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#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0)
|
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|
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#define CONDITIONAL_SET_FLAG(COND,FLAG) \
|
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if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG)
|
||||
|
||||
#define F_PF_CALC 0x010000 /* PARITY flag has been calced */
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#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */
|
||||
#define F_SF_CALC 0x040000 /* SIGN flag has been calced */
|
||||
|
||||
#define F_ALL_CALC 0xff0000 /* All have been calced */
|
||||
|
||||
/*
|
||||
* Emulator machine state.
|
||||
* Segment usage control.
|
||||
*/
|
||||
#define SYSMODE_SEG_DS_SS 0x00000001
|
||||
#define SYSMODE_SEGOVR_CS 0x00000002
|
||||
#define SYSMODE_SEGOVR_DS 0x00000004
|
||||
#define SYSMODE_SEGOVR_ES 0x00000008
|
||||
#define SYSMODE_SEGOVR_FS 0x00000010
|
||||
#define SYSMODE_SEGOVR_GS 0x00000020
|
||||
#define SYSMODE_SEGOVR_SS 0x00000040
|
||||
#define SYSMODE_PREFIX_REPE 0x00000080
|
||||
#define SYSMODE_PREFIX_REPNE 0x00000100
|
||||
#define SYSMODE_PREFIX_DATA 0x00000200
|
||||
#define SYSMODE_PREFIX_ADDR 0x00000400
|
||||
#define SYSMODE_INTR_PENDING 0x10000000
|
||||
#define SYSMODE_EXTRN_INTR 0x20000000
|
||||
#define SYSMODE_HALTED 0x40000000
|
||||
|
||||
#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \
|
||||
SYSMODE_SEGOVR_CS | \
|
||||
SYSMODE_SEGOVR_DS | \
|
||||
SYSMODE_SEGOVR_ES | \
|
||||
SYSMODE_SEGOVR_FS | \
|
||||
SYSMODE_SEGOVR_GS | \
|
||||
SYSMODE_SEGOVR_SS)
|
||||
#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \
|
||||
SYSMODE_SEGOVR_CS | \
|
||||
SYSMODE_SEGOVR_DS | \
|
||||
SYSMODE_SEGOVR_ES | \
|
||||
SYSMODE_SEGOVR_FS | \
|
||||
SYSMODE_SEGOVR_GS | \
|
||||
SYSMODE_SEGOVR_SS | \
|
||||
SYSMODE_PREFIX_DATA | \
|
||||
SYSMODE_PREFIX_ADDR)
|
||||
|
||||
#define INTR_SYNCH 0x1
|
||||
#define INTR_ASYNCH 0x2
|
||||
#define INTR_HALTED 0x4
|
||||
|
||||
typedef struct {
|
||||
struct i386_general_regs gen;
|
||||
struct i386_special_regs spc;
|
||||
struct i386_segment_regs seg;
|
||||
/*
|
||||
* MODE contains information on:
|
||||
* REPE prefix 2 bits repe,repne
|
||||
* SEGMENT overrides 5 bits normal,DS,SS,CS,ES
|
||||
* Delayed flag set 3 bits (zero, signed, parity)
|
||||
* reserved 6 bits
|
||||
* interrupt # 8 bits instruction raised interrupt
|
||||
* BIOS video segregs 4 bits
|
||||
* Interrupt Pending 1 bits
|
||||
* Extern interrupt 1 bits
|
||||
* Halted 1 bits
|
||||
*/
|
||||
uint32_t mode;
|
||||
volatile int intr; /* mask of pending interrupts */
|
||||
int debug;
|
||||
#ifdef DEBUG
|
||||
int check;
|
||||
uint16_t saved_ip;
|
||||
uint16_t saved_cs;
|
||||
int enc_pos;
|
||||
int enc_str_pos;
|
||||
// char decode_buf[32]; /* encoded byte stream */
|
||||
char decoded_buf[256]; /* disassembled strings */
|
||||
#endif
|
||||
uint8_t intno;
|
||||
uint8_t __pad[3];
|
||||
} X86EMU_regs;
|
||||
|
||||
/****************************************************************************
|
||||
REMARKS:
|
||||
Structure maintaining the emulator machine state.
|
||||
|
||||
MEMBERS:
|
||||
mem_base - Base real mode memory for the emulator
|
||||
abseg - Base for the absegment
|
||||
mem_size - Size of the real mode memory block for the emulator
|
||||
private - private data pointer
|
||||
x86 - X86 registers
|
||||
****************************************************************************/
|
||||
typedef struct {
|
||||
unsigned long mem_base;
|
||||
unsigned long mem_size;
|
||||
unsigned long abseg;
|
||||
void* private;
|
||||
X86EMU_regs x86;
|
||||
} X86EMU_sysEnv;
|
||||
|
||||
//#pragma pack()
|
||||
|
||||
/*----------------------------- Global Variables --------------------------*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" { /* Use "C" linkage when in C++ mode */
|
||||
#endif
|
||||
|
||||
/* Global emulator machine state.
|
||||
*
|
||||
* We keep it global to avoid pointer dereferences in the code for speed.
|
||||
*/
|
||||
|
||||
extern X86EMU_sysEnv _X86EMU_env;
|
||||
#define M _X86EMU_env
|
||||
|
||||
#define X86_EAX M.x86.R_EAX
|
||||
#define X86_EBX M.x86.R_EBX
|
||||
#define X86_ECX M.x86.R_ECX
|
||||
#define X86_EDX M.x86.R_EDX
|
||||
#define X86_ESI M.x86.R_ESI
|
||||
#define X86_EDI M.x86.R_EDI
|
||||
#define X86_EBP M.x86.R_EBP
|
||||
#define X86_EIP M.x86.R_EIP
|
||||
#define X86_ESP M.x86.R_ESP
|
||||
#define X86_EFLAGS M.x86.R_EFLG
|
||||
|
||||
#define X86_FLAGS M.x86.R_FLG
|
||||
#define X86_AX M.x86.R_AX
|
||||
#define X86_BX M.x86.R_BX
|
||||
#define X86_CX M.x86.R_CX
|
||||
#define X86_DX M.x86.R_DX
|
||||
#define X86_SI M.x86.R_SI
|
||||
#define X86_DI M.x86.R_DI
|
||||
#define X86_BP M.x86.R_BP
|
||||
#define X86_IP M.x86.R_IP
|
||||
#define X86_SP M.x86.R_SP
|
||||
#define X86_CS M.x86.R_CS
|
||||
#define X86_DS M.x86.R_DS
|
||||
#define X86_ES M.x86.R_ES
|
||||
#define X86_SS M.x86.R_SS
|
||||
#define X86_FS M.x86.R_FS
|
||||
#define X86_GS M.x86.R_GS
|
||||
|
||||
#define X86_AL M.x86.R_AL
|
||||
#define X86_BL M.x86.R_BL
|
||||
#define X86_CL M.x86.R_CL
|
||||
#define X86_DL M.x86.R_DL
|
||||
|
||||
#define X86_AH M.x86.R_AH
|
||||
#define X86_BH M.x86.R_BH
|
||||
#define X86_CH M.x86.R_CH
|
||||
#define X86_DH M.x86.R_DH
|
||||
|
||||
|
||||
/*-------------------------- Function Prototypes --------------------------*/
|
||||
|
||||
/* Function to log information at runtime */
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /* End of "C" linkage for C++ */
|
||||
#endif
|
||||
|
||||
#endif /* __X86EMU_REGS_H */
|
||||
Reference in New Issue
Block a user