2 * Xtensa hardware breakpoints/watchpoints handling functions
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
8 * Copyright (C) 2016 Cadence Design Systems Inc.
11 #ifndef __ASM_XTENSA_HW_BREAKPOINT_H
12 #define __ASM_XTENSA_HW_BREAKPOINT_H
14 #ifdef CONFIG_HAVE_HW_BREAKPOINT
16 #include <linux/kdebug.h>
17 #include <linux/types.h>
18 #include <uapi/linux/hw_breakpoint.h>
21 #define XTENSA_BREAKPOINT_EXECUTE 0
24 #define XTENSA_BREAKPOINT_LOAD 1
25 #define XTENSA_BREAKPOINT_STORE 2
27 struct arch_hw_breakpoint
{
28 unsigned long address
;
37 int hw_breakpoint_slots(int type
);
38 int arch_check_bp_in_kernelspace(struct perf_event
*bp
);
39 int arch_validate_hwbkpt_settings(struct perf_event
*bp
);
40 int hw_breakpoint_exceptions_notify(struct notifier_block
*unused
,
41 unsigned long val
, void *data
);
43 int arch_install_hw_breakpoint(struct perf_event
*bp
);
44 void arch_uninstall_hw_breakpoint(struct perf_event
*bp
);
45 void hw_breakpoint_pmu_read(struct perf_event
*bp
);
46 int check_hw_breakpoint(struct pt_regs
*regs
);
47 void clear_ptrace_hw_breakpoint(struct task_struct
*tsk
);
53 static inline void clear_ptrace_hw_breakpoint(struct task_struct
*tsk
)
57 #endif /* CONFIG_HAVE_HW_BREAKPOINT */
58 #endif /* __ASM_XTENSA_HW_BREAKPOINT_H */