Commit | Line | Data |
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b332828c P |
1 | #ifndef _I386_HW_BREAKPOINT_H |
2 | #define _I386_HW_BREAKPOINT_H | |
3 | ||
af170c50 DH |
4 | #include <uapi/asm/hw_breakpoint.h> |
5 | ||
b332828c P |
6 | #define __ARCH_HW_BREAKPOINT_H |
7 | ||
24f1e32c FW |
8 | /* |
9 | * The name should probably be something dealt in | |
10 | * a higher level. While dealing with the user | |
11 | * (display/resolving) | |
12 | */ | |
b332828c | 13 | struct arch_hw_breakpoint { |
b332828c P |
14 | unsigned long address; |
15 | u8 len; | |
16 | u8 type; | |
17 | }; | |
18 | ||
19 | #include <linux/kdebug.h> | |
24f1e32c FW |
20 | #include <linux/percpu.h> |
21 | #include <linux/list.h> | |
b332828c P |
22 | |
23 | /* Available HW breakpoint length encodings */ | |
89e45aac | 24 | #define X86_BREAKPOINT_LEN_X 0x40 |
24f1e32c FW |
25 | #define X86_BREAKPOINT_LEN_1 0x40 |
26 | #define X86_BREAKPOINT_LEN_2 0x44 | |
27 | #define X86_BREAKPOINT_LEN_4 0x4c | |
b332828c P |
28 | |
29 | #ifdef CONFIG_X86_64 | |
24f1e32c | 30 | #define X86_BREAKPOINT_LEN_8 0x48 |
b332828c P |
31 | #endif |
32 | ||
33 | /* Available HW breakpoint type encodings */ | |
34 | ||
35 | /* trigger on instruction execute */ | |
24f1e32c | 36 | #define X86_BREAKPOINT_EXECUTE 0x80 |
b332828c | 37 | /* trigger on memory write */ |
24f1e32c | 38 | #define X86_BREAKPOINT_WRITE 0x81 |
b332828c | 39 | /* trigger on memory read or write */ |
24f1e32c | 40 | #define X86_BREAKPOINT_RW 0x83 |
b332828c P |
41 | |
42 | /* Total number of available HW breakpoint registers */ | |
43 | #define HBP_NUM 4 | |
44 | ||
feef47d0 FW |
45 | static inline int hw_breakpoint_slots(int type) |
46 | { | |
47 | return HBP_NUM; | |
48 | } | |
49 | ||
24f1e32c FW |
50 | struct perf_event; |
51 | struct pmu; | |
b332828c | 52 | |
b2812d03 FW |
53 | extern int arch_check_bp_in_kernelspace(struct perf_event *bp); |
54 | extern int arch_validate_hwbkpt_settings(struct perf_event *bp); | |
b332828c | 55 | extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, |
24f1e32c FW |
56 | unsigned long val, void *data); |
57 | ||
58 | ||
59 | int arch_install_hw_breakpoint(struct perf_event *bp); | |
60 | void arch_uninstall_hw_breakpoint(struct perf_event *bp); | |
61 | void hw_breakpoint_pmu_read(struct perf_event *bp); | |
62 | void hw_breakpoint_pmu_unthrottle(struct perf_event *bp); | |
63 | ||
64 | extern void | |
65 | arch_fill_perf_breakpoint(struct perf_event *bp); | |
66 | ||
67 | unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type); | |
68 | int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type); | |
69 | ||
70 | extern int arch_bp_generic_fields(int x86_len, int x86_type, | |
71 | int *gen_len, int *gen_type); | |
72 | ||
73 | extern struct pmu perf_ops_bp; | |
74 | ||
b332828c | 75 | #endif /* _I386_HW_BREAKPOINT_H */ |