LXR linux/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
  10struct pt_regs;
  11
  12#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE)
  13
  14extern int (*__debugger)(struct pt_regs *regs);
  15extern int (*__debugger_ipi)(struct pt_regs *regs);
  16extern int (*__debugger_bpt)(struct pt_regs *regs);
  17extern int (*__debugger_sstep)(struct pt_regs *regs);
  18extern int (*__debugger_iabr_match)(struct pt_regs *regs);
  19extern int (*__debugger_break_match)(struct pt_regs *regs);
  20extern int (*__debugger_fault_handler)(struct pt_regs *regs);
  21
  22#define DEBUGGER_BOILERPLATE(__NAME) \
  23static inline int __NAME(struct pt_regs *regs) \
  24{ \
  25        if (unlikely(__ ## __NAME)) \
  26                return __ ## __NAME(regs); \
  27        return 0; \
  28}
  29
  30DEBUGGER_BOILERPLATE(debugger)
  31DEBUGGER_BOILERPLATE(debugger_ipi)
  32DEBUGGER_BOILERPLATE(debugger_bpt)
  33DEBUGGER_BOILERPLATE(debugger_sstep)
  34DEBUGGER_BOILERPLATE(debugger_iabr_match)
  35DEBUGGER_BOILERPLATE(debugger_break_match)
  36DEBUGGER_BOILERPLATE(debugger_fault_handler)
  37
  38#else
  39static inline int debugger(struct pt_regs *regs) { return 0; }
  40static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
  41static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
  42static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
  43static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
  44static inline int debugger_break_match(struct pt_regs *regs) { return 0; }
  45static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
  46#endif
  47
  48void __set_breakpoint(int nr, struct arch_hw_breakpoint *brk);
  49bool ppc_breakpoint_available(void);
  50#ifdef CONFIG_PPC_ADV_DEBUG_REGS
  51extern void do_send_trap(struct pt_regs *regs, unsigned long address,
  52                         unsigned long error_code, int brkpt);
  53#endif
  54
  55#endif /* _ASM_POWERPC_DEBUG_H */
  56