1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_PERF_REGS_H
3#define _LINUX_PERF_REGS_H
4
5#include <linux/sched/task_stack.h>
6
7struct perf_regs {
8 __u64 abi;
9 struct pt_regs *regs;
10};
11
12#ifdef CONFIG_HAVE_PERF_REGS
13#include <asm/perf_regs.h>
14
15#ifndef PERF_REG_EXTENDED_MASK
16#define PERF_REG_EXTENDED_MASK 0
17#endif
18
19u64 perf_reg_value(struct pt_regs *regs, int idx);
20int perf_reg_validate(u64 mask);
21u64 perf_reg_abi(struct task_struct *task);
22void perf_get_regs_user(struct perf_regs *regs_user,
23 struct pt_regs *regs);
24#else
25
26#define PERF_REG_EXTENDED_MASK 0
27
28static inline u64 perf_reg_value(struct pt_regs *regs, int idx)
29{
30 return 0;
31}
32
33static inline int perf_reg_validate(u64 mask)
34{
35 return mask ? -ENOSYS : 0;
36}
37
38static inline u64 perf_reg_abi(struct task_struct *task)
39{
40 return PERF_SAMPLE_REGS_ABI_NONE;
41}
42
43static inline void perf_get_regs_user(struct perf_regs *regs_user,
44 struct pt_regs *regs)
45{
46 regs_user->regs = task_pt_regs(current);
47 regs_user->abi = perf_reg_abi(current);
48}
49#endif /* CONFIG_HAVE_PERF_REGS */
50#endif /* _LINUX_PERF_REGS_H */
51