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debug.h

/****************************************************************************
*
*                                   Realmode X86 Emulator Library
*
*                 Copyright (C) 1996-1999 SciTech Software, Inc.
*                            Copyright (C) David Mosberger-Tang
*                                Copyright (C) 1999 Egbert Eich
*
*  ========================================================================
*
*  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.
*
*  ========================================================================
*
* Language:       ANSI C
* Environment:    Any
* Developer:    Kendall Bennett
*
* Description:  Header file for debug definitions.
*
****************************************************************************/

#ifndef __X86EMU_DEBUG_H
#define __X86EMU_DEBUG_H

/*---------------------- Macros and type definitions ----------------------*/

/* checks to be enabled for "runtime" */

#define CHECK_IP_FETCH_F                0x1
#define CHECK_SP_ACCESS_F               0x2
#define CHECK_MEM_ACCESS_F              0x4 /*using regular linear pointer */
#define CHECK_DATA_ACCESS_F             0x8 /*using segment:offset*/

#ifdef DEBUG
# define CHECK_IP_FETCH()                 (M.x86.check & CHECK_IP_FETCH_F)
# define CHECK_SP_ACCESS()                (M.x86.check & CHECK_SP_ACCESS_F)
# define CHECK_MEM_ACCESS()               (M.x86.check & CHECK_MEM_ACCESS_F)
# define CHECK_DATA_ACCESS()              (M.x86.check & CHECK_DATA_ACCESS_F)
#else
# define CHECK_IP_FETCH()
# define CHECK_SP_ACCESS()
# define CHECK_MEM_ACCESS()
# define CHECK_DATA_ACCESS()
#endif

#ifdef DEBUG
# define DEBUG_INSTRUMENT()         (M.x86.debug & DEBUG_INSTRUMENT_F)
# define DEBUG_DECODE()             (M.x86.debug & DEBUG_DECODE_F)
# define DEBUG_TRACE()              (M.x86.debug & DEBUG_TRACE_F)
# define DEBUG_STEP()               (M.x86.debug & DEBUG_STEP_F)
# define DEBUG_DISASSEMBLE()        (M.x86.debug & DEBUG_DISASSEMBLE_F)
# define DEBUG_BREAK()              (M.x86.debug & DEBUG_BREAK_F)
# define DEBUG_SVC()                (M.x86.debug & DEBUG_SVC_F)
# define DEBUG_SAVE_IP_CS()     (M.x86.debug & DEBUG_SAVE_IP_CS_F)

# define DEBUG_FS()                 (M.x86.debug & DEBUG_FS_F)
# define DEBUG_PROC()               (M.x86.debug & DEBUG_PROC_F)
# define DEBUG_SYSINT()             (M.x86.debug & DEBUG_SYSINT_F)
# define DEBUG_TRACECALL()          (M.x86.debug & DEBUG_TRACECALL_F)
# define DEBUG_TRACECALLREGS()      (M.x86.debug & DEBUG_TRACECALL_REGS_F)
# define DEBUG_SYS()                (M.x86.debug & DEBUG_SYS_F)
# define DEBUG_MEM_TRACE()          (M.x86.debug & DEBUG_MEM_TRACE_F)
# define DEBUG_IO_TRACE()           (M.x86.debug & DEBUG_IO_TRACE_F)
# define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F)
#else
# define DEBUG_INSTRUMENT()         0
# define DEBUG_DECODE()             0
# define DEBUG_TRACE()              0
# define DEBUG_STEP()               0
# define DEBUG_DISASSEMBLE()        0
# define DEBUG_BREAK()              0
# define DEBUG_SVC()                0
# define DEBUG_SAVE_IP_CS()     0
# define DEBUG_FS()                 0
# define DEBUG_PROC()               0
# define DEBUG_SYSINT()             0
# define DEBUG_TRACECALL()          0
# define DEBUG_TRACECALLREGS()      0
# define DEBUG_SYS()                0
# define DEBUG_MEM_TRACE()          0
# define DEBUG_IO_TRACE()           0
# define DEBUG_DECODE_NOPRINT() 0
#endif

#ifdef DEBUG

# define DECODE_PRINTF(x)           if (DEBUG_DECODE()) \
                                                      x86emu_decode_printf(x)
# define DECODE_PRINTF2(x,y)        if (DEBUG_DECODE()) \
                                                      x86emu_decode_printf2(x,y)

/*
 * The following allow us to look at the bytes of an instruction.  The
 * first INCR_INSTRN_LEN, is called everytime bytes are consumed in
 * the decoding process.  The SAVE_IP_CS is called initially when the
 * major opcode of the instruction is accessed.
 */
#define INC_DECODED_INST_LEN(x)                       \
      if (DEBUG_DECODE())                             \
            x86emu_inc_decoded_inst_len(x)

#define SAVE_IP_CS(x,y)                                                 \
      if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \
              | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \
            M.x86.saved_cs = x;                                         \
            M.x86.saved_ip = y;                                         \
      }
#else
# define INC_DECODED_INST_LEN(x)
# define DECODE_PRINTF(x)
# define DECODE_PRINTF2(x,y)
# define SAVE_IP_CS(x,y)
#endif

#ifdef DEBUG
#define TRACE_REGS()                                              \
      if (DEBUG_DISASSEMBLE()) {                                  \
            x86emu_just_disassemble();                            \
            goto EndOfTheInstructionProcedure;                    \
      }                                                     \
      if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs()
#else
# define TRACE_REGS()
#endif

#ifdef DEBUG
# define SINGLE_STEP()        if (DEBUG_STEP()) x86emu_single_step()
#else
# define SINGLE_STEP()
#endif

#define TRACE_AND_STEP()      \
      TRACE_REGS();                 \
      SINGLE_STEP()

#ifdef DEBUG
# define START_OF_INSTR()
# define END_OF_INSTR()       EndOfTheInstructionProcedure: x86emu_end_instr();
# define END_OF_INSTR_NO_TRACE()    x86emu_end_instr();
#else
# define START_OF_INSTR()
# define END_OF_INSTR()
# define END_OF_INSTR_NO_TRACE()
#endif

#ifdef DEBUG
# define  CALL_TRACE(u,v,w,x,s)                                 \
      if (DEBUG_TRACECALLREGS())                                                    \
            x86emu_dump_regs();                                     \
      if (DEBUG_TRACECALL())                                      \
            printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x);
# define RETURN_TRACE(n,u,v)                                    \
      if (DEBUG_TRACECALLREGS())                                                    \
            x86emu_dump_regs();                                     \
      if (DEBUG_TRACECALL())                                      \
            printk("%04x:%04x: %s\n",u,v,n);
#else
# define CALL_TRACE(u,v,w,x,s)
# define RETURN_TRACE(n,u,v)
#endif

#ifdef DEBUG
#define     DB(x) x
#else
#define     DB(x)
#endif

/*-------------------------- Function Prototypes --------------------------*/

#ifdef  __cplusplus
extern "C" {                              /* Use "C" linkage when in C++ mode */
#endif

extern void x86emu_inc_decoded_inst_len (int x);
extern void x86emu_decode_printf (char *x);
extern void x86emu_decode_printf2 (char *x, int y);
extern void x86emu_just_disassemble (void);
extern void x86emu_single_step (void);
extern void x86emu_end_instr (void);
extern void x86emu_dump_regs (void);
extern void x86emu_dump_xregs (void);
extern void x86emu_print_int_vect (u16 iv);
extern void x86emu_instrument_instruction (void);
extern void x86emu_check_ip_access (void);
extern void x86emu_check_sp_access (void);
extern void x86emu_check_mem_access (u32 p);
extern void x86emu_check_data_access (uint s, uint o);

#ifdef  __cplusplus
}                                         /* End of "C" linkage for C++       */
#endif

#endif /* __X86EMU_DEBUG_H */

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