| 1 | /****************************************************************************
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| 2 | *
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| 3 | * Realmode X86 Emulator Library
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| 4 | *
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| 5 | * Copyright (C) 1996-1999 SciTech Software, Inc.
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| 6 | * Copyright (C) David Mosberger-Tang
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| 7 | * Copyright (C) 1999 Egbert Eich
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| 8 | *
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| 9 | * ========================================================================
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| 10 | *
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| 11 | * Permission to use, copy, modify, distribute, and sell this software and
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| 12 | * its documentation for any purpose is hereby granted without fee,
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| 13 | * provided that the above copyright notice appear in all copies and that
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| 14 | * both that copyright notice and this permission notice appear in
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| 15 | * supporting documentation, and that the name of the authors not be used
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| 16 | * in advertising or publicity pertaining to distribution of the software
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| 17 | * without specific, written prior permission. The authors makes no
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| 18 | * representations about the suitability of this software for any purpose.
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| 19 | * It is provided "as is" without express or implied warranty.
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| 20 | *
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| 21 | * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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| 22 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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| 23 | * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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| 24 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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| 25 | * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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| 26 | * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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| 27 | * PERFORMANCE OF THIS SOFTWARE.
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| 28 | *
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| 29 | * ========================================================================
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| 30 | *
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| 31 | * Language: ANSI C
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| 32 | * Environment: Any
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| 33 | * Developer: Kendall Bennett
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| 34 | *
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| 35 | * Description: Header file for public specific functions.
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| 36 | * Any application linking against us should only
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| 37 | * include this header
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| 38 | *
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| 39 | ****************************************************************************/
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| 40 |
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| 41 | #ifndef __X86EMU_X86EMU_H
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| 42 | #define __X86EMU_X86EMU_H
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| 43 |
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| 44 | #ifdef SCITECH
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| 45 | #include "scitech.h"
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| 46 | #define X86API _ASMAPI
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| 47 | #define X86APIP _ASMAPIP
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| 48 | typedef int X86EMU_pioAddr;
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| 49 | #else
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| 50 | #include "x86emu/types.h"
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| 51 | #define X86API
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| 52 | #define X86APIP *
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| 53 | #endif
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| 54 | #include "x86emu/regs.h"
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| 55 |
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| 56 | /*---------------------- Macros and type definitions ----------------------*/
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| 57 |
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| 58 | #ifdef PACK
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| 59 | # pragma PACK /* Don't pack structs with function pointers! */
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| 60 | #endif
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| 61 |
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| 62 | /****************************************************************************
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| 63 | REMARKS:
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| 64 | Data structure containing ponters to programmed I/O functions used by the
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| 65 | emulator. This is used so that the user program can hook all programmed
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| 66 | I/O for the emulator to handled as necessary by the user program. By
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| 67 | default the emulator contains simple functions that do not do access the
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| 68 | hardware in any way. To allow the emualtor access the hardware, you will
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| 69 | need to override the programmed I/O functions using the X86EMU_setupPioFuncs
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| 70 | function.
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| 71 |
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| 72 | HEADER:
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| 73 | x86emu.h
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| 74 |
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| 75 | MEMBERS:
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| 76 | inb - Function to read a byte from an I/O port
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| 77 | inw - Function to read a word from an I/O port
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| 78 | inl - Function to read a dword from an I/O port
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| 79 | outb - Function to write a byte to an I/O port
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| 80 | outw - Function to write a word to an I/O port
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| 81 | outl - Function to write a dword to an I/O port
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| 82 | ****************************************************************************/
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| 83 | typedef struct {
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| 84 | u8 (X86APIP inb)(X86EMU_pioAddr addr);
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| 85 | u16 (X86APIP inw)(X86EMU_pioAddr addr);
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| 86 | u32 (X86APIP inl)(X86EMU_pioAddr addr);
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| 87 | void (X86APIP outb)(X86EMU_pioAddr addr, u8 val);
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| 88 | void (X86APIP outw)(X86EMU_pioAddr addr, u16 val);
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| 89 | void (X86APIP outl)(X86EMU_pioAddr addr, u32 val);
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| 90 | } X86EMU_pioFuncs;
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| 91 |
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| 92 | /****************************************************************************
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| 93 | REMARKS:
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| 94 | Data structure containing ponters to memory access functions used by the
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| 95 | emulator. This is used so that the user program can hook all memory
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| 96 | access functions as necessary for the emulator. By default the emulator
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| 97 | contains simple functions that only access the internal memory of the
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| 98 | emulator. If you need specialised functions to handle access to different
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| 99 | types of memory (ie: hardware framebuffer accesses and BIOS memory access
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| 100 | etc), you will need to override this using the X86EMU_setupMemFuncs
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| 101 | function.
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| 102 |
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| 103 | HEADER:
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| 104 | x86emu.h
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| 105 |
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| 106 | MEMBERS:
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| 107 | rdb - Function to read a byte from an address
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| 108 | rdw - Function to read a word from an address
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| 109 | rdl - Function to read a dword from an address
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| 110 | wrb - Function to write a byte to an address
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| 111 | wrw - Function to write a word to an address
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| 112 | wrl - Function to write a dword to an address
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| 113 | ****************************************************************************/
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| 114 | typedef struct {
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| 115 | u8 (X86APIP rdb)(u32 addr);
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| 116 | u16 (X86APIP rdw)(u32 addr);
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| 117 | u32 (X86APIP rdl)(u32 addr);
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| 118 | void (X86APIP wrb)(u32 addr, u8 val);
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| 119 | void (X86APIP wrw)(u32 addr, u16 val);
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| 120 | void (X86APIP wrl)(u32 addr, u32 val);
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| 121 | } X86EMU_memFuncs;
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| 122 |
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| 123 | /****************************************************************************
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| 124 | Here are the default memory read and write
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| 125 | function in case they are needed as fallbacks.
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| 126 | ***************************************************************************/
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| 127 | extern u8 X86API rdb(u32 addr);
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| 128 | extern u16 X86API rdw(u32 addr);
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| 129 | extern u32 X86API rdl(u32 addr);
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| 130 | extern void X86API wrb(u32 addr, u8 val);
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| 131 | extern void X86API wrw(u32 addr, u16 val);
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| 132 | extern void X86API wrl(u32 addr, u32 val);
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| 133 |
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| 134 | #ifdef END_PACK
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| 135 | # pragma END_PACK
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| 136 | #endif
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| 137 |
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| 138 | /*--------------------- type definitions -----------------------------------*/
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| 139 |
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| 140 | typedef void (X86APIP X86EMU_intrFuncs)(int num);
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| 141 | extern X86EMU_intrFuncs _X86EMU_intrTab[256];
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| 142 |
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| 143 | /*-------------------------- Function Prototypes --------------------------*/
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| 144 |
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| 145 | #ifdef __cplusplus
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| 146 | extern "C" { /* Use "C" linkage when in C++ mode */
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| 147 | #endif
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| 148 |
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| 149 | void X86EMU_setupMemFuncs(X86EMU_memFuncs *funcs);
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| 150 | void X86EMU_setupPioFuncs(X86EMU_pioFuncs *funcs);
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| 151 | void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]);
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| 152 | void X86EMU_prepareForInt(int num);
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| 153 |
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| 154 | /* decode.c */
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| 155 |
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| 156 | void X86EMU_exec(void);
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| 157 | void X86EMU_halt_sys(void);
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| 158 |
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| 159 | #ifdef DEBUG
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| 160 | #define HALT_SYS() \
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| 161 | printk("halt_sys: file %s, line %d\n", __FILE__, __LINE__), \
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| 162 | X86EMU_halt_sys()
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| 163 | #else
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| 164 | #define HALT_SYS() X86EMU_halt_sys()
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| 165 | #endif
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| 166 |
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| 167 | /* Debug options */
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| 168 |
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| 169 | #define DEBUG_DECODE_F 0x000001 /* print decoded instruction */
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| 170 | #define DEBUG_TRACE_F 0x000002 /* dump regs before/after execution */
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| 171 | #define DEBUG_STEP_F 0x000004
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| 172 | #define DEBUG_DISASSEMBLE_F 0x000008
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| 173 | #define DEBUG_BREAK_F 0x000010
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| 174 | #define DEBUG_SVC_F 0x000020
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| 175 | #define DEBUG_SAVE_IP_CS_F 0x000040
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| 176 | #define DEBUG_FS_F 0x000080
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| 177 | #define DEBUG_PROC_F 0x000100
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| 178 | #define DEBUG_SYSINT_F 0x000200 /* bios system interrupts. */
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| 179 | #define DEBUG_TRACECALL_F 0x000400
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| 180 | #define DEBUG_INSTRUMENT_F 0x000800
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| 181 | #define DEBUG_MEM_TRACE_F 0x001000
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| 182 | #define DEBUG_IO_TRACE_F 0x002000
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| 183 | #define DEBUG_TRACECALL_REGS_F 0x004000
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| 184 | #define DEBUG_DECODE_NOPRINT_F 0x008000
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| 185 | #define DEBUG_EXIT 0x010000
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| 186 | #define DEBUG_SYS_F (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F)
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| 187 |
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| 188 | void X86EMU_trace_regs(void);
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| 189 | void X86EMU_trace_xregs(void);
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| 190 | void X86EMU_dump_memory(u16 seg, u16 off, u32 amt);
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| 191 | int X86EMU_trace_on(void);
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| 192 | int X86EMU_trace_off(void);
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| 193 |
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| 194 | #ifdef __cplusplus
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| 195 | } /* End of "C" linkage for C++ */
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| 196 | #endif
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| 197 |
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| 198 | #endif /* __X86EMU_X86EMU_H */
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