diff options
Diffstat (limited to 'include/linux/perf_regs.h')
| -rw-r--r-- | include/linux/perf_regs.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/perf_regs.h b/include/linux/perf_regs.h new file mode 100644 index 000000000..f632c5725 --- /dev/null +++ b/include/linux/perf_regs.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_PERF_REGS_H +#define _LINUX_PERF_REGS_H + +#include <linux/sched/task_stack.h> + +struct perf_regs { + __u64 abi; + struct pt_regs *regs; +}; + +#ifdef CONFIG_HAVE_PERF_REGS +#include <asm/perf_regs.h> + +#ifndef PERF_REG_EXTENDED_MASK +#define PERF_REG_EXTENDED_MASK 0 +#endif + +u64 perf_reg_value(struct pt_regs *regs, int idx); +int perf_reg_validate(u64 mask); +u64 perf_reg_abi(struct task_struct *task); +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs); +#else + +#define PERF_REG_EXTENDED_MASK 0 + +static inline u64 perf_reg_value(struct pt_regs *regs, int idx) +{ + return 0; +} + +static inline int perf_reg_validate(u64 mask) +{ + return mask ? -ENOSYS : 0; +} + +static inline u64 perf_reg_abi(struct task_struct *task) +{ + return PERF_SAMPLE_REGS_ABI_NONE; +} + +static inline void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} +#endif /* CONFIG_HAVE_PERF_REGS */ +#endif /* _LINUX_PERF_REGS_H */ |