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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _I386_HW_BREAKPOINT_H #define _I386_HW_BREAKPOINT_H #include #define __ARCH_HW_BREAKPOINT_H /* * The name should probably be something dealt in * a higher level. While dealing with the user * (display/resolving) */ struct arch_hw_breakpoint { unsigned long address; unsigned long mask; u8 len; u8 type; }; #include #include #include /* Available HW breakpoint length encodings */ #define X86_BREAKPOINT_LEN_X 0x40 #define X86_BREAKPOINT_LEN_1 0x40 #define X86_BREAKPOINT_LEN_2 0x44 #define X86_BREAKPOINT_LEN_4 0x4c #ifdef CONFIG_X86_64 #define X86_BREAKPOINT_LEN_8 0x48 #endif /* Available HW breakpoint type encodings */ /* trigger on instruction execute */ #define X86_BREAKPOINT_EXECUTE 0x80 /* trigger on memory write */ #define X86_BREAKPOINT_WRITE 0x81 /* trigger on memory read or write */ #define X86_BREAKPOINT_RW 0x83 /* Total number of available HW breakpoint registers */ #define HBP_NUM 4 static inline int hw_breakpoint_slots(int type) { return HBP_NUM; } struct perf_event_attr; struct perf_event; struct pmu; extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw); extern int hw_breakpoint_arch_parse(struct perf_event *bp, const struct perf_event_attr *attr, struct arch_hw_breakpoint *hw); extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, unsigned long val, void *data); int arch_install_hw_breakpoint(struct perf_event *bp); void arch_uninstall_hw_breakpoint(struct perf_event *bp); void hw_breakpoint_pmu_read(struct perf_event *bp); void hw_breakpoint_pmu_unthrottle(struct perf_event *bp); extern void arch_fill_perf_breakpoint(