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kernel/linux-rt-4.4.41/arch/x86/include/asm/kgdb.h 2.03 KB
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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 */