WIP FPC-III support
[linux/fpc-iii.git] / arch / xtensa / include / asm / hw_breakpoint.h
blob9f119c1ca0b5d8dac50613b3fa27f5a1cb303451
1 /*
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
6 * for more details.
8 * Copyright (C) 2016 Cadence Design Systems Inc.
9 */
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>
20 /* Breakpoint */
21 #define XTENSA_BREAKPOINT_EXECUTE 0
23 /* Watchpoints */
24 #define XTENSA_BREAKPOINT_LOAD 1
25 #define XTENSA_BREAKPOINT_STORE 2
27 struct arch_hw_breakpoint {
28 unsigned long address;
29 u16 len;
30 u16 type;
33 struct perf_event_attr;
34 struct perf_event;
35 struct pt_regs;
36 struct task_struct;
38 int hw_breakpoint_slots(int type);
39 int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw);
40 int hw_breakpoint_arch_parse(struct perf_event *bp,
41 const struct perf_event_attr *attr,
42 struct arch_hw_breakpoint *hw);
43 int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
44 unsigned long val, void *data);
46 int arch_install_hw_breakpoint(struct perf_event *bp);
47 void arch_uninstall_hw_breakpoint(struct perf_event *bp);
48 void hw_breakpoint_pmu_read(struct perf_event *bp);
49 int check_hw_breakpoint(struct pt_regs *regs);
50 void clear_ptrace_hw_breakpoint(struct task_struct *tsk);
52 #else
54 struct task_struct;
56 static inline void clear_ptrace_hw_breakpoint(struct task_struct *tsk)
60 #endif /* CONFIG_HAVE_HW_BREAKPOINT */
61 #endif /* __ASM_XTENSA_HW_BREAKPOINT_H */