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 char *name; /* Contains name of the symbol to set bkpt */
14 unsigned long address;
19 #include <linux/kdebug.h>
20 #include <linux/percpu.h>
21 #include <linux/list.h>
23 /* Available HW breakpoint length encodings */
24 #define X86_BREAKPOINT_LEN_1 0x40
25 #define X86_BREAKPOINT_LEN_2 0x44
26 #define X86_BREAKPOINT_LEN_4 0x4c
27 #define X86_BREAKPOINT_LEN_EXECUTE 0x40
30 #define X86_BREAKPOINT_LEN_8 0x48
33 /* Available HW breakpoint type encodings */
35 /* trigger on instruction execute */
36 #define X86_BREAKPOINT_EXECUTE 0x80
37 /* trigger on memory write */
38 #define X86_BREAKPOINT_WRITE 0x81
39 /* trigger on memory read or write */
40 #define X86_BREAKPOINT_RW 0x83
42 /* Total number of available HW breakpoint registers */
48 extern int arch_check_va_in_userspace(unsigned long va, u8 hbp_len);
49 extern int arch_validate_hwbkpt_settings(struct perf_event *bp,
50 struct task_struct *tsk);
51 extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
52 unsigned long val, void *data);
55 int arch_install_hw_breakpoint(struct perf_event *bp);
56 void arch_uninstall_hw_breakpoint(struct perf_event *bp);
57 void hw_breakpoint_pmu_read(struct perf_event *bp);
58 void hw_breakpoint_pmu_unthrottle(struct perf_event *bp);
61 arch_fill_perf_breakpoint(struct perf_event *bp);
63 unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type);
64 int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type);
66 extern int arch_bp_generic_fields(int x86_len, int x86_type,
67 int *gen_len, int *gen_type);
69 extern struct pmu perf_ops_bp;
71 #endif /* __KERNEL__ */
72 #endif /* _I386_HW_BREAKPOINT_H */