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 7 struct 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 u64 perf_reg_value(struct pt_regs *regs, int idx); 15 int perf_reg_validate(u64 mask); 16 u64 perf_reg_abi(struct task_struct *task); 17 void perf_get_regs_user(struct perf_regs *regs_user, 18 struct pt_regs *regs, 19 struct pt_regs *regs_user_copy); 20 #else 21 static inline u64 perf_reg_value(struct pt_regs *regs, int idx) 22 { 23 return 0; 24 } 25 26 static inline int perf_reg_validate(u64 mask) 27 { 28 return mask ? -ENOSYS : 0; 29 } 30 31 static inline u64 perf_reg_abi(struct task_struct *task) 32 { 33 return PERF_SAMPLE_REGS_ABI_NONE; 34 } 35 36 static inline void perf_get_regs_user(struct perf_regs *regs_user, 37 struct pt_regs *regs, 38 struct pt_regs *regs_user_copy) 39 { 40 regs_user->regs = task_pt_regs(current); 41 regs_user->abi = perf_reg_abi(current); 42 } 43 #endif /* CONFIG_HAVE_PERF_REGS */ 44 #endif /* _LINUX_PERF_REGS_H */ 45