board/MAI/bios_emulator/scitech/src/x86emu/x86emu/debug.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 debug definitions.
  36 *
  37 ****************************************************************************/
  38
  39 #ifndef __X86EMU_DEBUG_H
  40 #define __X86EMU_DEBUG_H
  41
  42 /*---------------------- Macros and type definitions ----------------------*/
  43
  44 /* checks to be enabled for "runtime" */
  45
  46 #define CHECK_IP_FETCH_F                0x1
  47 #define CHECK_SP_ACCESS_F               0x2
  48 #define CHECK_MEM_ACCESS_F              0x4 /*using regular linear pointer */
  49 #define CHECK_DATA_ACCESS_F             0x8 /*using segment:offset*/
  50
  51 #ifdef DEBUG
  52 # define CHECK_IP_FETCH()               (M.x86.check & CHECK_IP_FETCH_F)
  53 # define CHECK_SP_ACCESS()              (M.x86.check & CHECK_SP_ACCESS_F)
  54 # define CHECK_MEM_ACCESS()             (M.x86.check & CHECK_MEM_ACCESS_F)
  55 # define CHECK_DATA_ACCESS()            (M.x86.check & CHECK_DATA_ACCESS_F)
  56 #else
  57 # define CHECK_IP_FETCH()
  58 # define CHECK_SP_ACCESS()
  59 # define CHECK_MEM_ACCESS()
  60 # define CHECK_DATA_ACCESS()
  61 #endif
  62
  63 #ifdef DEBUG
  64 # define DEBUG_INSTRUMENT()     (M.x86.debug & DEBUG_INSTRUMENT_F)
  65 # define DEBUG_DECODE()         (M.x86.debug & DEBUG_DECODE_F)
  66 # define DEBUG_TRACE()          (M.x86.debug & DEBUG_TRACE_F)
  67 # define DEBUG_STEP()           (M.x86.debug & DEBUG_STEP_F)
  68 # define DEBUG_DISASSEMBLE()    (M.x86.debug & DEBUG_DISASSEMBLE_F)
  69 # define DEBUG_BREAK()          (M.x86.debug & DEBUG_BREAK_F)
  70 # define DEBUG_SVC()            (M.x86.debug & DEBUG_SVC_F)
  71 # define DEBUG_SAVE_IP_CS()     (M.x86.debug & DEBUG_SAVE_CS_IP)
  72
  73 # define DEBUG_FS()             (M.x86.debug & DEBUG_FS_F)
  74 # define DEBUG_PROC()           (M.x86.debug & DEBUG_PROC_F)
  75 # define DEBUG_SYSINT()         (M.x86.debug & DEBUG_SYSINT_F)
  76 # define DEBUG_TRACECALL()      (M.x86.debug & DEBUG_TRACECALL_F)
  77 # define DEBUG_TRACECALLREGS()  (M.x86.debug & DEBUG_TRACECALL_REGS_F)
  78 # define DEBUG_SYS()            (M.x86.debug & DEBUG_SYS_F)
  79 # define DEBUG_MEM_TRACE()      (M.x86.debug & DEBUG_MEM_TRACE_F)
  80 # define DEBUG_IO_TRACE()       (M.x86.debug & DEBUG_IO_TRACE_F)
  81 # define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F)
  82 #else
  83 # define DEBUG_INSTRUMENT()     0
  84 # define DEBUG_DECODE()         0
  85 # define DEBUG_TRACE()          0
  86 # define DEBUG_STEP()           0
  87 # define DEBUG_DISASSEMBLE()    0
  88 # define DEBUG_BREAK()          0
  89 # define DEBUG_SVC()            0
  90 # define DEBUG_SAVE_IP_CS()     0
  91 # define DEBUG_FS()             0
  92 # define DEBUG_PROC()           0
  93 # define DEBUG_SYSINT()         0
  94 # define DEBUG_TRACECALL()      0
  95 # define DEBUG_TRACECALLREGS()  0
  96 # define DEBUG_SYS()            0
  97 # define DEBUG_MEM_TRACE()      0
  98 # define DEBUG_IO_TRACE()       0
  99 # define DEBUG_DECODE_NOPRINT() 0
 100 #endif
 101
 102 #ifdef DEBUG
 103
 104 # define DECODE_PRINTF(x)       if (DEBUG_DECODE()) \
 105                                                                         x86emu_decode_printf(x)
 106 # define DECODE_PRINTF2(x,y)    if (DEBUG_DECODE()) \
 107                                                                         x86emu_decode_printf2(x,y)
 108
 109 /*
 110  * The following allow us to look at the bytes of an instruction.  The
 111  * first INCR_INSTRN_LEN, is called everytime bytes are consumed in
 112  * the decoding process.  The SAVE_IP_CS is called initially when the
 113  * major opcode of the instruction is accessed.
 114  */
 115 #define INC_DECODED_INST_LEN(x)                         \
 116         if (DEBUG_DECODE())                             \
 117                 x86emu_inc_decoded_inst_len(x)
 118
 119 #define SAVE_IP_CS(x,y)                                                 \
 120         if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \
 121               | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \
 122                 M.x86.saved_cs = x;                                             \
 123                 M.x86.saved_ip = y;                                             \
 124         }
 125 #else
 126 # define INC_DECODED_INST_LEN(x)
 127 # define DECODE_PRINTF(x)
 128 # define DECODE_PRINTF2(x,y)
 129 # define SAVE_IP_CS(x,y)
 130 #endif
 131
 132 #ifdef DEBUG
 133 #define TRACE_REGS()                                            \
 134         if (DEBUG_DISASSEMBLE()) {                                      \
 135                 x86emu_just_disassemble();                              \
 136                 goto EndOfTheInstructionProcedure;                      \
 137         }                                                       \
 138         if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs()
 139 #else
 140 # define TRACE_REGS()
 141 #endif
 142
 143 #ifdef DEBUG
 144 # define SINGLE_STEP()          if (DEBUG_STEP()) x86emu_single_step()
 145 #else
 146 # define SINGLE_STEP()
 147 #endif
 148
 149 #define TRACE_AND_STEP()        \
 150         TRACE_REGS();                   \
 151         SINGLE_STEP()
 152
 153 #ifdef DEBUG
 154 # define START_OF_INSTR()
 155 # define END_OF_INSTR()         EndOfTheInstructionProcedure: x86emu_end_instr();
 156 # define END_OF_INSTR_NO_TRACE()        x86emu_end_instr();
 157 #else
 158 # define START_OF_INSTR()
 159 # define END_OF_INSTR()
 160 # define END_OF_INSTR_NO_TRACE()
 161 #endif
 162
 163 #ifdef DEBUG
 164 # define  CALL_TRACE(u,v,w,x,s)                                 \
 165         if (DEBUG_TRACECALLREGS())                                                                      \
 166                 x86emu_dump_regs();                                     \
 167         if (DEBUG_TRACECALL())                                          \
 168                 printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x);
 169 # define RETURN_TRACE(n,u,v)                                    \
 170         if (DEBUG_TRACECALLREGS())                                                                      \
 171                 x86emu_dump_regs();                                     \
 172         if (DEBUG_TRACECALL())                                          \
 173                 printk("%04x:%04x: %s\n",u,v,n);
 174 #else
 175 # define CALL_TRACE(u,v,w,x,s)
 176 # define RETURN_TRACE(n,u,v)
 177 #endif
 178
 179 #ifdef DEBUG
 180 #define DB(x)   x
 181 #else
 182 #define DB(x)
 183 #endif
 184
 185 /*-------------------------- Function Prototypes --------------------------*/
 186
 187 #ifdef  __cplusplus
 188 extern "C" {                                    /* Use "C" linkage when in C++ mode */
 189 #endif
 190
 191 extern void x86emu_inc_decoded_inst_len (int x);
 192 extern void x86emu_decode_printf (char *x);
 193 extern void x86emu_decode_printf2 (char *x, int y);
 194 extern void x86emu_just_disassemble (void);
 195 extern void x86emu_single_step (void);
 196 extern void x86emu_end_instr (void);
 197 extern void x86emu_dump_regs (void);
 198 extern void x86emu_dump_xregs (void);
 199 extern void x86emu_print_int_vect (u16 iv);
 200 extern void x86emu_instrument_instruction (void);
 201 extern void x86emu_check_ip_access (void);
 202 extern void x86emu_check_sp_access (void);
 203 extern void x86emu_check_mem_access (u32 p);
 204 extern void x86emu_check_data_access (uint s, uint o);
 205
 206 #ifdef  __cplusplus
 207 }                                               /* End of "C" linkage for C++           */
 208 #endif
 209
 210 #endif /* __X86EMU_DEBUG_H */