1 #ifndef _I386_HW_BREAKPOINT_H
2 #define _I386_HW_BREAKPOINT_H
5 #define __ARCH_HW_BREAKPOINT_H
8 * The name should probably be something dealt in
9 * a higher level. While dealing with the user
12 struct arch_hw_breakpoint {
13 unsigned long address;
18 #include <linux/kdebug.h>
19 #include <linux/percpu.h>
20 #include <linux/list.h>
22 /* Available HW breakpoint length encodings */
23 #define X86_BREAKPOINT_LEN_1 0x40
24 #define X86_BREAKPOINT_LEN_2 0x44
25 #define X86_BREAKPOINT_LEN_4 0x4c
26 #define X86_BREAKPOINT_LEN_EXECUTE 0x40
29 #define X86_BREAKPOINT_LEN_8 0x48
32 /* Available HW breakpoint type encodings */
34 /* trigger on instruction execute */
35 #define X86_BREAKPOINT_EXECUTE 0x80
36 /* trigger on memory write */
37 #define X86_BREAKPOINT_WRITE 0x81
38 /* trigger on memory read or write */
39 #define X86_BREAKPOINT_RW 0x83
41 /* Total number of available HW breakpoint registers */
47 extern int arch_check_va_in_userspace(unsigned long va, u8 hbp_len);
48 extern int arch_validate_hwbkpt_settings(struct perf_event *bp,
49 struct task_struct *tsk);
50 extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
51 unsigned long val, void *data);
54 int arch_install_hw_breakpoint(struct perf_event *bp);
55 void arch_uninstall_hw_breakpoint(struct perf_event *bp);
56 void hw_breakpoint_pmu_read(struct perf_event *bp);
57 void hw_breakpoint_pmu_unthrottle(struct perf_event *bp);
60 arch_fill_perf_breakpoint(struct perf_event *bp);
62 unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type);
63 int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type);
65 extern int arch_bp_generic_fields(int x86_len, int x86_type,
66 int *gen_len, int *gen_type);
68 extern struct pmu perf_ops_bp;
70 #endif /* __KERNEL__ */
71 #endif /* _I386_HW_BREAKPOINT_H */