Commit | Line | Data |
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c91e02bd MF |
1 | /* |
2 | * Xtensa hardware breakpoints/watchpoints handling functions | |
3 | * | |
4 | * This file is subject to the terms and conditions of the GNU General Public | |
5 | * License. See the file "COPYING" in the main directory of this archive | |
6 | * for more details. | |
7 | * | |
8 | * Copyright (C) 2016 Cadence Design Systems Inc. | |
9 | */ | |
10 | ||
11 | #ifndef __ASM_XTENSA_HW_BREAKPOINT_H | |
12 | #define __ASM_XTENSA_HW_BREAKPOINT_H | |
13 | ||
14 | #ifdef CONFIG_HAVE_HW_BREAKPOINT | |
15 | ||
16 | #include <linux/kdebug.h> | |
17 | #include <linux/types.h> | |
18 | #include <uapi/linux/hw_breakpoint.h> | |
19 | ||
20 | /* Breakpoint */ | |
21 | #define XTENSA_BREAKPOINT_EXECUTE 0 | |
22 | ||
23 | /* Watchpoints */ | |
24 | #define XTENSA_BREAKPOINT_LOAD 1 | |
25 | #define XTENSA_BREAKPOINT_STORE 2 | |
26 | ||
27 | struct arch_hw_breakpoint { | |
28 | unsigned long address; | |
29 | u16 len; | |
30 | u16 type; | |
31 | }; | |
32 | ||
ac46c7fd | 33 | struct perf_event_attr; |
c91e02bd MF |
34 | struct perf_event; |
35 | struct pt_regs; | |
36 | struct task_struct; | |
37 | ||
38 | int hw_breakpoint_slots(int type); | |
8e983ff9 | 39 | int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw); |
ac46c7fd FW |
40 | int hw_breakpoint_arch_parse(struct perf_event *bp, |
41 | const struct perf_event_attr *attr, | |
42 | struct arch_hw_breakpoint *hw); | |
c91e02bd MF |
43 | int hw_breakpoint_exceptions_notify(struct notifier_block *unused, |
44 | unsigned long val, void *data); | |
45 | ||
46 | int arch_install_hw_breakpoint(struct perf_event *bp); | |
47 | void arch_uninstall_hw_breakpoint(struct perf_event *bp); | |
48 | void hw_breakpoint_pmu_read(struct perf_event *bp); | |
49 | int check_hw_breakpoint(struct pt_regs *regs); | |
50 | void clear_ptrace_hw_breakpoint(struct task_struct *tsk); | |
2e413b1e | 51 | void restore_dbreak(void); |
c91e02bd MF |
52 | |
53 | #else | |
54 | ||
55 | struct task_struct; | |
56 | ||
57 | static inline void clear_ptrace_hw_breakpoint(struct task_struct *tsk) | |
58 | { | |
59 | } | |
60 | ||
61 | #endif /* CONFIG_HAVE_HW_BREAKPOINT */ | |
62 | #endif /* __ASM_XTENSA_HW_BREAKPOINT_H */ |