replaced Firetos x86 emulator with the optimised NetBSD version
This commit is contained in:
Markus Fröschle
289
include/x86emu.h
289
include/x86emu.h
@@ -1,192 +1,159 @@
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/* $NetBSD: x86emu.h,v 1.1 2007/12/01 20:14:10 joerg Exp $ */
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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
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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 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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*
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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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* Copyright (C) 2007 Joerg Sonnenberger
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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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#ifndef __X86EMU_X86EMU_H
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#define __X86EMU_X86EMU_H
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#include "bas_types.h"
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#define X86API
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#define X86APIP *
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#include "x86regs.h"
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typedef uint16_t X86EMU_pioAddr;
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/*---------------------- Macros and type definitions ----------------------*/
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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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//#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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struct X86EMU_register32 {
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uint32_t e_reg;
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};
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HEADER:
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x86emu.h
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struct X86EMU_register16 {
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uint16_t filler0;
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uint16_t x_reg;
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};
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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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struct X86EMU_register8 {
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uint8_t filler0, filler1;
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uint8_t h_reg, l_reg;
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};
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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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union X86EMU_register {
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struct X86EMU_register32 I32_reg;
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struct X86EMU_register16 I16_reg;
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struct X86EMU_register8 I8_reg;
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};
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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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struct X86EMU_regs {
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uint16_t register_cs;
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uint16_t register_ds;
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uint16_t register_es;
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uint16_t register_fs;
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uint16_t register_gs;
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uint16_t register_ss;
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uint32_t register_flags;
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union X86EMU_register register_a;
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union X86EMU_register register_b;
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union X86EMU_register register_c;
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union X86EMU_register register_d;
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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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union X86EMU_register register_sp;
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union X86EMU_register register_bp;
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union X86EMU_register register_si;
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union X86EMU_register register_di;
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union X86EMU_register register_ip;
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//#pragma pack()
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/*
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* MODE contains information on:
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* REPE prefix 2 bits repe,repne
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* SEGMENT overrides 5 bits normal,DS,SS,CS,ES
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* Delayed flag set 3 bits (zero, signed, parity)
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* reserved 6 bits
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* interrupt # 8 bits instruction raised interrupt
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* BIOS video segregs 4 bits
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* Interrupt Pending 1 bits
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* Extern interrupt 1 bits
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* Halted 1 bits
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*/
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uint32_t mode;
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volatile int intr; /* mask of pending interrupts */
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uint8_t intno;
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uint8_t __pad[3];
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};
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/*--------------------- type definitions -----------------------------------*/
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typedef uint32_t label_t;
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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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struct X86EMU {
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char *mem_base;
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size_t mem_size;
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void *sys_private;
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struct X86EMU_regs x86;
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/*-------------------------- Function Prototypes --------------------------*/
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label_t exec_state;
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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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uint64_t cur_cycles;
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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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unsigned int cur_mod:2;
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unsigned int cur_rl:3;
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unsigned int cur_rh:3;
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uint32_t cur_offset;
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/* decode.c */
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uint8_t (*emu_rdb)(struct X86EMU *, uint32_t addr);
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uint16_t (*emu_rdw)(struct X86EMU *, uint32_t addr);
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uint32_t (*emu_rdl)(struct X86EMU *, uint32_t addr);
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void (*emu_wrb)(struct X86EMU *, uint32_t addr,uint8_t val);
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void (*emu_wrw)(struct X86EMU *, uint32_t addr, uint16_t val);
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void (*emu_wrl)(struct X86EMU *, uint32_t addr, uint32_t val);
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void X86EMU_exec(void);
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void X86EMU_halt_sys(void);
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uint8_t (*emu_inb)(struct X86EMU *, uint16_t addr);
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uint16_t (*emu_inw)(struct X86EMU *, uint16_t addr);
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uint32_t (*emu_inl)(struct X86EMU *, uint16_t addr);
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void (*emu_outb)(struct X86EMU *, uint16_t addr, uint8_t val);
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void (*emu_outw)(struct X86EMU *, uint16_t addr, uint16_t val);
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void (*emu_outl)(struct X86EMU *, uint16_t addr, uint32_t val);
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#ifdef DBG_X86EMU
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#define HALT_SYS() \
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dbg("%s: halt_sys: file %s line %d\r\n", __FUNCTION__, __FILE__, __LINE__);\
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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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void (*_X86EMU_intrTab[256])(struct X86EMU *, int);
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};
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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_init_default(struct X86EMU *);
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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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/* decode.c */
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void X86EMU_exec(struct X86EMU *);
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void X86EMU_exec_call(struct X86EMU *, uint16_t, uint16_t);
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void X86EMU_exec_intr(struct X86EMU *, uint8_t);
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void X86EMU_halt_sys(struct X86EMU *);
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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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