From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- tools/perf/util/unwind.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 tools/perf/util/unwind.h (limited to 'tools/perf/util/unwind.h') diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h new file mode 100644 index 000000000..8a44a1569 --- /dev/null +++ b/tools/perf/util/unwind.h @@ -0,0 +1,85 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __UNWIND_H +#define __UNWIND_H + +#include +#include + +struct map; +struct perf_sample; +struct symbol; +struct thread; + +struct unwind_entry { + struct map *map; + struct symbol *sym; + u64 ip; +}; + +typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg); + +struct unwind_libunwind_ops { + int (*prepare_access)(struct thread *thread); + void (*flush_access)(struct thread *thread); + void (*finish_access)(struct thread *thread); + int (*get_entries)(unwind_entry_cb_t cb, void *arg, + struct thread *thread, + struct perf_sample *data, int max_stack); +}; + +#ifdef HAVE_DWARF_UNWIND_SUPPORT +int unwind__get_entries(unwind_entry_cb_t cb, void *arg, + struct thread *thread, + struct perf_sample *data, int max_stack); +/* libunwind specific */ +#ifdef HAVE_LIBUNWIND_SUPPORT +#ifndef LIBUNWIND__ARCH_REG_ID +#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum) +#endif + +#ifndef LIBUNWIND__ARCH_REG_SP +#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP +#endif + +#ifndef LIBUNWIND__ARCH_REG_IP +#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP +#endif + +int LIBUNWIND__ARCH_REG_ID(int regnum); +int unwind__prepare_access(struct thread *thread, struct map *map, + bool *initialized); +void unwind__flush_access(struct thread *thread); +void unwind__finish_access(struct thread *thread); +#else +static inline int unwind__prepare_access(struct thread *thread __maybe_unused, + struct map *map __maybe_unused, + bool *initialized __maybe_unused) +{ + return 0; +} + +static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} +static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} +#endif +#else +static inline int +unwind__get_entries(unwind_entry_cb_t cb __maybe_unused, + void *arg __maybe_unused, + struct thread *thread __maybe_unused, + struct perf_sample *data __maybe_unused, + int max_stack __maybe_unused) +{ + return 0; +} + +static inline int unwind__prepare_access(struct thread *thread __maybe_unused, + struct map *map __maybe_unused, + bool *initialized __maybe_unused) +{ + return 0; +} + +static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} +static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} +#endif /* HAVE_DWARF_UNWIND_SUPPORT */ +#endif /* __UNWIND_H */ -- cgit v1.2.3