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(int nr, struct arch_hw_breakpoint *brk);
49 void suspend_breakpoints(void);
50 void restore_breakpoints(void);
51 bool ppc_breakpoint_available(void);
52 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
53 extern 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 */
58
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