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Linux/arch/powerpc/include/asm/debug.h

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  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 */
 60 

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