drivers/bios_emulator/include/x86emu.h

   1 /****************************************************************************
   2 *
   3 *                       Realmode X86 Emulator Library
   4 *
   5 *               Copyright (C) 1996-1999 SciTech Software, Inc.
   6 *                    Copyright (C) David Mosberger-Tang
   7 *                      Copyright (C) 1999 Egbert Eich
   8 *
   9 *  ========================================================================
  10 *
  11 *  Permission to use, copy, modify, distribute, and sell this software and
  12 *  its documentation for any purpose is hereby granted without fee,
  13 *  provided that the above copyright notice appear in all copies and that
  14 *  both that copyright notice and this permission notice appear in
  15 *  supporting documentation, and that the name of the authors not be used
  16 *  in advertising or publicity pertaining to distribution of the software
  17 *  without specific, written prior permission.  The authors makes no
  18 *  representations about the suitability of this software for any purpose.
  19 *  It is provided "as is" without express or implied warranty.
  20 *
  21 *  THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  22 *  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  23 *  EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  24 *  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
  25 *  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
  26 *  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  27 *  PERFORMANCE OF THIS SOFTWARE.
  28 *
  29 *  ========================================================================
  30 *
  31 * Language:     ANSI C
  32 * Environment:  Any
  33 * Developer:    Kendall Bennett
  34 *
  35 * Description:  Header file for public specific functions.
  36 *               Any application linking against us should only
  37 *               include this header
  38 *
  39 ****************************************************************************/
  40
  41 #ifndef __X86EMU_X86EMU_H
  42 #define __X86EMU_X86EMU_H
  43
  44 #include <asm/types.h>
  45 #include <common.h>
  46 #include <pci.h>
  47 #include <asm/io.h>
  48 #define X86API
  49 #define X86APIP *
  50 typedef u16 X86EMU_pioAddr;
  51
  52 #include "x86emu/regs.h"
  53
  54 /*---------------------- Macros and type definitions ----------------------*/
  55
  56 #if defined (CONFIG_ARM)
  57 #define GAS_LINE_COMMENT        "@"
  58 #elif defined(CONFIG_MIPS) || defined(CONFIG_PPC)
  59 #define GAS_LINE_COMMENT        "#"
  60 #elif defined (CONFIG_SH)
  61 #define GAS_LINE_COMMENT        "!"
  62 #endif
  63
  64 #define GOT2_TYPE       ".got2,\"aw\"\t"GAS_LINE_COMMENT
  65
  66 #pragma pack(1)
  67
  68 /****************************************************************************
  69 REMARKS:
  70 Data structure containing ponters to programmed I/O functions used by the
  71 emulator. This is used so that the user program can hook all programmed
  72 I/O for the emulator to handled as necessary by the user program. By
  73 default the emulator contains simple functions that do not do access the
  74 hardware in any way. To allow the emualtor access the hardware, you will
  75 need to override the programmed I/O functions using the X86EMU_setupPioFuncs
  76 function.
  77
  78 HEADER:
  79 x86emu.h
  80
  81 MEMBERS:
  82 inb     - Function to read a byte from an I/O port
  83 inw     - Function to read a word from an I/O port
  84 inl     - Function to read a dword from an I/O port
  85 outb    - Function to write a byte to an I/O port
  86 outw    - Function to write a word to an I/O port
  87 outl    - Function to write a dword to an I/O port
  88 ****************************************************************************/
  89 typedef struct {
  90         u8(X86APIP inb) (X86EMU_pioAddr addr);
  91         u16(X86APIP inw) (X86EMU_pioAddr addr);
  92         u32(X86APIP inl) (X86EMU_pioAddr addr);
  93         void (X86APIP outb) (X86EMU_pioAddr addr, u8 val);
  94         void (X86APIP outw) (X86EMU_pioAddr addr, u16 val);
  95         void (X86APIP outl) (X86EMU_pioAddr addr, u32 val);
  96 } X86EMU_pioFuncs;
  97
  98 /****************************************************************************
  99 REMARKS:
 100 Data structure containing ponters to memory access functions used by the
 101 emulator. This is used so that the user program can hook all memory
 102 access functions as necessary for the emulator. By default the emulator
 103 contains simple functions that only access the internal memory of the
 104 emulator. If you need specialised functions to handle access to different
 105 types of memory (ie: hardware framebuffer accesses and BIOS memory access
 106 etc), you will need to override this using the X86EMU_setupMemFuncs
 107 function.
 108
 109 HEADER:
 110 x86emu.h
 111
 112 MEMBERS:
 113 rdb     - Function to read a byte from an address
 114 rdw     - Function to read a word from an address
 115 rdl     - Function to read a dword from an address
 116 wrb     - Function to write a byte to an address
 117 wrw     - Function to write a word to an address
 118 wrl     - Function to write a dword to an address
 119 ****************************************************************************/
 120 typedef struct {
 121         u8(X86APIP rdb) (u32 addr);
 122         u16(X86APIP rdw) (u32 addr);
 123         u32(X86APIP rdl) (u32 addr);
 124         void (X86APIP wrb) (u32 addr, u8 val);
 125         void (X86APIP wrw) (u32 addr, u16 val);
 126         void (X86APIP wrl) (u32 addr, u32 val);
 127 } X86EMU_memFuncs;
 128
 129 /****************************************************************************
 130   Here are the default memory read and write
 131   function in case they are needed as fallbacks.
 132 ***************************************************************************/
 133 extern u8 X86API rdb(u32 addr);
 134 extern u16 X86API rdw(u32 addr);
 135 extern u32 X86API rdl(u32 addr);
 136 extern void X86API wrb(u32 addr, u8 val);
 137 extern void X86API wrw(u32 addr, u16 val);
 138 extern void X86API wrl(u32 addr, u32 val);
 139
 140 #pragma pack()
 141
 142 /*--------------------- type definitions -----------------------------------*/
 143
 144 typedef void (X86APIP X86EMU_intrFuncs) (int num);
 145 extern X86EMU_intrFuncs _X86EMU_intrTab[256];
 146
 147 /*-------------------------- Function Prototypes --------------------------*/
 148
 149 #ifdef  __cplusplus
 150 extern "C" {                    /* Use "C" linkage when in C++ mode */
 151 #endif
 152
 153         void X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs);
 154         void X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs);
 155         void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]);
 156         void X86EMU_prepareForInt(int num);
 157
 158 /* decode.c */
 159
 160         void X86EMU_exec(void);
 161         void X86EMU_halt_sys(void);
 162
 163 #ifdef  DEBUG
 164 #define HALT_SYS()  \
 165     printf("halt_sys: file %s, line %d\n", __FILE__, __LINE__), \
 166     X86EMU_halt_sys()
 167 #else
 168 #define HALT_SYS()  X86EMU_halt_sys()
 169 #endif
 170
 171 /* Debug options */
 172
 173 #define DEBUG_DECODE_F          0x0001  /* print decoded instruction  */
 174 #define DEBUG_TRACE_F           0x0002  /* dump regs before/after execution */
 175 #define DEBUG_STEP_F            0x0004
 176 #define DEBUG_DISASSEMBLE_F     0x0008
 177 #define DEBUG_BREAK_F           0x0010
 178 #define DEBUG_SVC_F             0x0020
 179 #define DEBUG_SAVE_CS_IP        0x0040
 180 #define DEBUG_FS_F              0x0080
 181 #define DEBUG_PROC_F            0x0100
 182 #define DEBUG_SYSINT_F          0x0200  /* bios system interrupts. */
 183 #define DEBUG_TRACECALL_F       0x0400
 184 #define DEBUG_INSTRUMENT_F      0x0800
 185 #define DEBUG_MEM_TRACE_F       0x1000
 186 #define DEBUG_IO_TRACE_F        0x2000
 187 #define DEBUG_TRACECALL_REGS_F  0x4000
 188 #define DEBUG_DECODE_NOPRINT_F  0x8000
 189 #define DEBUG_EXIT              0x10000
 190 #define DEBUG_SYS_F             (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F)
 191
 192         void X86EMU_trace_regs(void);
 193         void X86EMU_trace_xregs(void);
 194         void X86EMU_dump_memory(u16 seg, u16 off, u32 amt);
 195         int X86EMU_trace_on(void);
 196         int X86EMU_trace_off(void);
 197
 198 #ifdef  __cplusplus
 199 }                               /* End of "C" linkage for C++       */
 200 #endif
 201 #endif                          /* __X86EMU_X86EMU_H */