This source file includes following definitions.
- hw_breakpoint_disable
- hw_breakpoint_disable
- thread_change_pc
- dawr_enabled
- dawr_enabled
- set_dawr
1
2
3
4
5
6
7
8
9 #ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H
10 #define _PPC_BOOK3S_64_HW_BREAKPOINT_H
11
12 #ifdef __KERNEL__
13 struct arch_hw_breakpoint {
14 unsigned long address;
15 u16 type;
16 u16 len;
17 };
18
19
20
21
22 #define HW_BRK_TYPE_READ 0x01
23 #define HW_BRK_TYPE_WRITE 0x02
24 #define HW_BRK_TYPE_TRANSLATE 0x04
25 #define HW_BRK_TYPE_USER 0x08
26 #define HW_BRK_TYPE_KERNEL 0x10
27 #define HW_BRK_TYPE_HYP 0x20
28 #define HW_BRK_TYPE_EXTRANEOUS_IRQ 0x80
29
30
31 #define HW_BRK_TYPE_RDWR (HW_BRK_TYPE_READ | HW_BRK_TYPE_WRITE)
32 #define HW_BRK_TYPE_DABR (HW_BRK_TYPE_RDWR | HW_BRK_TYPE_TRANSLATE)
33 #define HW_BRK_TYPE_PRIV_ALL (HW_BRK_TYPE_USER | HW_BRK_TYPE_KERNEL | \
34 HW_BRK_TYPE_HYP)
35
36 #ifdef CONFIG_HAVE_HW_BREAKPOINT
37 #include <linux/kdebug.h>
38 #include <asm/reg.h>
39 #include <asm/debug.h>
40
41 struct perf_event_attr;
42 struct perf_event;
43 struct pmu;
44 struct perf_sample_data;
45 struct task_struct;
46
47 #define HW_BREAKPOINT_ALIGN 0x7
48
49 extern int hw_breakpoint_slots(int type);
50 extern int arch_bp_generic_fields(int type, int *gen_bp_type);
51 extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw);
52 extern int hw_breakpoint_arch_parse(struct perf_event *bp,
53 const struct perf_event_attr *attr,
54 struct arch_hw_breakpoint *hw);
55 extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
56 unsigned long val, void *data);
57 int arch_install_hw_breakpoint(struct perf_event *bp);
58 void arch_uninstall_hw_breakpoint(struct perf_event *bp);
59 void arch_unregister_hw_breakpoint(struct perf_event *bp);
60 void hw_breakpoint_pmu_read(struct perf_event *bp);
61 extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
62
63 extern struct pmu perf_ops_bp;
64 extern void ptrace_triggered(struct perf_event *bp,
65 struct perf_sample_data *data, struct pt_regs *regs);
66 static inline void hw_breakpoint_disable(void)
67 {
68 struct arch_hw_breakpoint brk;
69
70 brk.address = 0;
71 brk.type = 0;
72 brk.len = 0;
73 if (ppc_breakpoint_available())
74 __set_breakpoint(&brk);
75 }
76 extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs);
77 int hw_breakpoint_handler(struct die_args *args);
78
79 #else
80 static inline void hw_breakpoint_disable(void) { }
81 static inline void thread_change_pc(struct task_struct *tsk,
82 struct pt_regs *regs) { }
83
84 #endif
85
86
87 #ifdef CONFIG_PPC_DAWR
88 extern bool dawr_force_enable;
89 static inline bool dawr_enabled(void)
90 {
91 return dawr_force_enable;
92 }
93 int set_dawr(struct arch_hw_breakpoint *brk);
94 #else
95 static inline bool dawr_enabled(void) { return false; }
96 static inline int set_dawr(struct arch_hw_breakpoint *brk) { return -1; }
97 #endif
98
99 #endif
100 #endif