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80 lines
2.1 KiB
80 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _I386_HW_BREAKPOINT_H |
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#define _I386_HW_BREAKPOINT_H |
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#include <uapi/asm/hw_breakpoint.h> |
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#define __ARCH_HW_BREAKPOINT_H |
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/* |
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* The name should probably be something dealt in |
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* a higher level. While dealing with the user |
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* (display/resolving) |
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*/ |
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struct arch_hw_breakpoint { |
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unsigned long address; |
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unsigned long mask; |
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u8 len; |
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u8 type; |
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}; |
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#include <linux/kdebug.h> |
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#include <linux/percpu.h> |
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#include <linux/list.h> |
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/* Available HW breakpoint length encodings */ |
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#define X86_BREAKPOINT_LEN_X 0x40 |
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#define X86_BREAKPOINT_LEN_1 0x40 |
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#define X86_BREAKPOINT_LEN_2 0x44 |
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#define X86_BREAKPOINT_LEN_4 0x4c |
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#ifdef CONFIG_X86_64 |
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#define X86_BREAKPOINT_LEN_8 0x48 |
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#endif |
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/* Available HW breakpoint type encodings */ |
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/* trigger on instruction execute */ |
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#define X86_BREAKPOINT_EXECUTE 0x80 |
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/* trigger on memory write */ |
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#define X86_BREAKPOINT_WRITE 0x81 |
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/* trigger on memory read or write */ |
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#define X86_BREAKPOINT_RW 0x83 |
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/* Total number of available HW breakpoint registers */ |
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#define HBP_NUM 4 |
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static inline int hw_breakpoint_slots(int type) |
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{ |
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return HBP_NUM; |
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} |
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struct perf_event_attr; |
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struct perf_event; |
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struct pmu; |
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extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw); |
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extern int hw_breakpoint_arch_parse(struct perf_event *bp, |
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const struct perf_event_attr *attr, |
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struct arch_hw_breakpoint *hw); |
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extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, |
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unsigned long val, void *data); |
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int arch_install_hw_breakpoint(struct perf_event *bp); |
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void arch_uninstall_hw_breakpoint(struct perf_event *bp); |
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void hw_breakpoint_pmu_read(struct perf_event *bp); |
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void hw_breakpoint_pmu_unthrottle(struct perf_event *bp); |
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extern void |
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arch_fill_perf_breakpoint(struct perf_event *bp); |
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unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type); |
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int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type); |
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extern int arch_bp_generic_fields(int x86_len, int x86_type, |
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int *gen_len, int *gen_type); |
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extern struct pmu perf_ops_bp; |
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#endif /* _I386_HW_BREAKPOINT_H */
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