arch/powerpc/include/asm/debug.h

   1 /*
   2  * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
   3  */
   4 #ifndef _ASM_POWERPC_DEBUG_H
   5 #define _ASM_POWERPC_DEBUG_H
   6
   7 #include <asm/hw_breakpoint.h>
   8
   9 struct pt_regs;
  10
  11 extern struct dentry *powerpc_debugfs_root;
  12
  13 #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
  14
  15 extern int (*__debugger)(struct pt_regs *regs);
  16 extern int (*__debugger_ipi)(struct pt_regs *regs);
  17 extern int (*__debugger_bpt)(struct pt_regs *regs);
  18 extern int (*__debugger_sstep)(struct pt_regs *regs);
  19 extern int (*__debugger_iabr_match)(struct pt_regs *regs);
  20 extern int (*__debugger_break_match)(struct pt_regs *regs);
  21 extern int (*__debugger_fault_handler)(struct pt_regs *regs);
  22
  23 #define DEBUGGER_BOILERPLATE(__NAME) \
  24 static inline int __NAME(struct pt_regs *regs) \
  25 { \
  26         if (unlikely(__ ## __NAME)) \
  27                 return __ ## __NAME(regs); \
  28         return 0; \
  29 }
  30
  31 DEBUGGER_BOILERPLATE(debugger)
  32 DEBUGGER_BOILERPLATE(debugger_ipi)
  33 DEBUGGER_BOILERPLATE(debugger_bpt)
  34 DEBUGGER_BOILERPLATE(debugger_sstep)
  35 DEBUGGER_BOILERPLATE(debugger_iabr_match)
  36 DEBUGGER_BOILERPLATE(debugger_break_match)
  37 DEBUGGER_BOILERPLATE(debugger_fault_handler)
  38
  39 #else
  40 static inline int debugger(struct pt_regs *regs) { return 0; }
  41 static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
  42 static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
  43 static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
  44 static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
  45 static inline int debugger_break_match(struct pt_regs *regs) { return 0; }
  46 static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
  47 #endif
  48
  49 int set_breakpoint(struct arch_hw_breakpoint *brk);
  50 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
  51 extern void do_send_trap(struct pt_regs *regs, unsigned long address,
  52                          unsigned long error_code, int signal_code, int brkpt);
  53 #else
  54
  55 extern void do_break(struct pt_regs *regs, unsigned long address,
  56                      unsigned long error_code);
  57 #endif
  58
  59 #endif /* _ASM_POWERPC_DEBUG_H */