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 15 #ifndef PERF_REG_EXTENDED_MASK 16 #define PERF_REG_EXTENDED_MASK 0 17 #endif 18 19 u64 perf_reg_value(struct pt_regs *regs, int idx); 20 int perf_reg_validate(u64 mask); 21 u64 perf_reg_abi(struct task_struct *task); 22 void 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 perf_reg_value(struct pt_regs * regs,int idx)28 static inline u64 perf_reg_value(struct pt_regs *regs, int idx) 29 { 30 return 0; 31 } 32 perf_reg_validate(u64 mask)33 static inline int perf_reg_validate(u64 mask) 34 { 35 return mask ? -ENOSYS : 0; 36 } 37 perf_reg_abi(struct task_struct * task)38 static inline u64 perf_reg_abi(struct task_struct *task) 39 { 40 return PERF_SAMPLE_REGS_ABI_NONE; 41 } 42 perf_get_regs_user(struct perf_regs * regs_user,struct pt_regs * regs)43 static 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