kgdb.h

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#ifndef _ASM_X86_KGDB_H
#define _ASM_X86_KGDB_H

/*
 * Copyright (C) 2001-2004 Amit S. Kale
 * Copyright (C) 2008 Wind River Systems, Inc.
 */

/*
 * BUFMAX defines the maximum number of characters in inbound/outbound
 * buffers at least NUMREGBYTES*2 are needed for register packets
 * Longer buffer is needed to list all threads
 */
#define BUFMAX          1024

/*
 *  Note that this register image is in a different order than
 *  the register image that Linux produces at interrupt time.
 *
 *  Linux's register image is defined by struct pt_regs in ptrace.h.
 *  Just why GDB uses a different order is a historical mystery.
 */
#ifdef CONFIG_X86_32
enum regnames {
    GDB_AX,         /* 0 */
    GDB_CX,         /* 1 */
    GDB_DX,         /* 2 */
    GDB_BX,         /* 3 */
    GDB_SP,         /* 4 */
    GDB_BP,         /* 5 */
    GDB_SI,         /* 6 */
    GDB_DI,         /* 7 */
    GDB_PC,         /* 8 also known as eip */
    GDB_PS,         /* 9 also known as eflags */
    GDB_CS,         /* 10 */
    GDB_SS,         /* 11 */
    GDB_DS,         /* 12 */
    GDB_ES,         /* 13 */
    GDB_FS,         /* 14 */
    GDB_GS,         /* 15 */
};
#define GDB_ORIG_AX     41
#define DBG_MAX_REG_NUM     16
#define NUMREGBYTES     ((GDB_GS+1)*4)
#else /* ! CONFIG_X86_32 */
enum regnames {
    GDB_AX,         /* 0 */
    GDB_BX,         /* 1 */
    GDB_CX,         /* 2 */
    GDB_DX,         /* 3 */
    GDB_SI,         /* 4 */
    GDB_DI,         /* 5 */
    GDB_BP,         /* 6 */
    GDB_SP,         /* 7 */
    GDB_R8,         /* 8 */
    GDB_R9,         /* 9 */
    GDB_R10,        /* 10 */
    GDB_R11,        /* 11 */
    GDB_R12,        /* 12 */
    GDB_R13,        /* 13 */
    GDB_R14,        /* 14 */
    GDB_R15,        /* 15 */
    GDB_PC,         /* 16 */
    GDB_PS,         /* 17 */
    GDB_CS,         /* 18 */
    GDB_SS,         /* 19 */
    GDB_DS,         /* 20 */
    GDB_ES,         /* 21 */
    GDB_FS,         /* 22 */
    GDB_GS,         /* 23 */
};
#define GDB_ORIG_AX     57
#define DBG_MAX_REG_NUM     24
/* 17 64 bit regs and 5 32 bit regs */
#define NUMREGBYTES     ((17 * 8) + (5 * 4))
#endif /* ! CONFIG_X86_32 */

static inline void arch_kgdb_breakpoint(void)
{
    asm("   int $3");
}
#define BREAK_INSTR_SIZE    1
#define CACHE_FLUSH_IS_SAFE 1
#define GDB_ADJUSTS_BREAK_OFFSET

extern int kgdb_ll_trap(int cmd, const char *str,
            struct pt_regs *regs, long err, int trap, int sig);

#endif /* _ASM_X86_KGDB_H */