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);
49void suspend_breakpoints(void);
50void restore_breakpoints(void);
51bool ppc_breakpoint_available(void);
52#ifdef CONFIG_PPC_ADV_DEBUG_REGS
53extern void do_send_trap(struct pt_regs *regs, unsigned long address,
54			 unsigned long error_code, int brkpt);
55#endif
56
57#endif /* _ASM_POWERPC_DEBUG_H */