xref: /openbmc/u-boot/drivers/bios_emulator/include/x86emu/debug.h (revision ece92f85)

/****************************************************************************
*
*                       Realmode X86 Emulator Library
*
*               Copyright (C) 1991-2004 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_CS_IP)

# 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 */