59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
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/*
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* Xtensa hardware breakpoints/watchpoints handling functions
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2016 Cadence Design Systems Inc.
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*/
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#ifndef __ASM_XTENSA_HW_BREAKPOINT_H
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#define __ASM_XTENSA_HW_BREAKPOINT_H
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#ifdef CONFIG_HAVE_HW_BREAKPOINT
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#include <linux/kdebug.h>
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#include <linux/types.h>
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#include <uapi/linux/hw_breakpoint.h>
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/* Breakpoint */
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#define XTENSA_BREAKPOINT_EXECUTE 0
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/* Watchpoints */
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#define XTENSA_BREAKPOINT_LOAD 1
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#define XTENSA_BREAKPOINT_STORE 2
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struct arch_hw_breakpoint {
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unsigned long address;
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u16 len;
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u16 type;
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};
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struct perf_event;
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struct pt_regs;
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struct task_struct;
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int hw_breakpoint_slots(int type);
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int arch_check_bp_in_kernelspace(struct perf_event *bp);
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int arch_validate_hwbkpt_settings(struct perf_event *bp);
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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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int check_hw_breakpoint(struct pt_regs *regs);
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void clear_ptrace_hw_breakpoint(struct task_struct *tsk);
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#else
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struct task_struct;
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static inline void clear_ptrace_hw_breakpoint(struct task_struct *tsk)
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{
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}
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#endif /* CONFIG_HAVE_HW_BREAKPOINT */
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#endif /* __ASM_XTENSA_HW_BREAKPOINT_H */
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