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 struct pt_regs *regs_user_copy); 25#else 26 27#define PERF_REG_EXTENDED_MASK 0 28 29static inline u64 perf_reg_value(struct pt_regs *regs, int idx) 30{ 31 return 0; 32} 33 34static inline int perf_reg_validate(u64 mask) 35{ 36 return mask ? -ENOSYS : 0; 37} 38 39static inline u64 perf_reg_abi(struct task_struct *task) 40{ 41 return PERF_SAMPLE_REGS_ABI_NONE; 42} 43 44static inline void perf_get_regs_user(struct perf_regs *regs_user, 45 struct pt_regs *regs, 46 struct pt_regs *regs_user_copy) 47{ 48 regs_user->regs = task_pt_regs(current); 49 regs_user->abi = perf_reg_abi(current); 50} 51#endif /* CONFIG_HAVE_PERF_REGS */ 52#endif /* _LINUX_PERF_REGS_H */ 53