arch/powerpc/include/asm/debug.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
   4  */
   5 #ifndef _ASM_POWERPC_DEBUG_H
   6 #define _ASM_POWERPC_DEBUG_H
   7
   8 #include <asm/hw_breakpoint.h>
   9
  10 struct pt_regs;
  11
  12 #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE)
  13
  14 extern int (*__debugger)(struct pt_regs *regs);
  15 extern int (*__debugger_ipi)(struct pt_regs *regs);
  16 extern int (*__debugger_bpt)(struct pt_regs *regs);
  17 extern int (*__debugger_sstep)(struct pt_regs *regs);
  18 extern int (*__debugger_iabr_match)(struct pt_regs *regs);
  19 extern int (*__debugger_break_match)(struct pt_regs *regs);
  20 extern int (*__debugger_fault_handler)(struct pt_regs *regs);
  21
  22 #define DEBUGGER_BOILERPLATE(__NAME) \
  23 static inline int __NAME(struct pt_regs *regs) \
  24 { \
  25         if (unlikely(__ ## __NAME)) \
  26                 return __ ## __NAME(regs); \
  27         return 0; \
  28 }
  29
  30 DEBUGGER_BOILERPLATE(debugger)
  31 DEBUGGER_BOILERPLATE(debugger_ipi)
  32 DEBUGGER_BOILERPLATE(debugger_bpt)
  33 DEBUGGER_BOILERPLATE(debugger_sstep)
  34 DEBUGGER_BOILERPLATE(debugger_iabr_match)
  35 DEBUGGER_BOILERPLATE(debugger_break_match)
  36 DEBUGGER_BOILERPLATE(debugger_fault_handler)
  37
  38 #else
  39 static inline int debugger(struct pt_regs *regs) { return 0; }
  40 static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
  41 static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
  42 static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
  43 static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
  44 static inline int debugger_break_match(struct pt_regs *regs) { return 0; }
  45 static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
  46 #endif
  47
  48 void __set_breakpoint(struct arch_hw_breakpoint *brk);
  49 bool ppc_breakpoint_available(void);
  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 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 */