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