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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/util/unwind.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/util/unwind.h')
-rw-r--r-- | tools/perf/util/unwind.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h new file mode 100644 index 000000000..ab8ad469c --- /dev/null +++ b/tools/perf/util/unwind.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __UNWIND_H +#define __UNWIND_H + +#include <linux/compiler.h> +#include <linux/types.h> +#include "util/map_symbol.h" + +struct maps; +struct perf_sample; +struct thread; + +struct unwind_entry { + struct map_symbol ms; + u64 ip; +}; + +typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg); + +struct unwind_libunwind_ops { + int (*prepare_access)(struct maps *maps); + void (*flush_access)(struct maps *maps); + void (*finish_access)(struct maps *maps); + 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 maps *maps, struct map *map, bool *initialized); +void unwind__flush_access(struct maps *maps); +void unwind__finish_access(struct maps *maps); +#else +static inline int unwind__prepare_access(struct maps *maps __maybe_unused, + struct map *map __maybe_unused, + bool *initialized __maybe_unused) +{ + return 0; +} + +static inline void unwind__flush_access(struct maps *maps __maybe_unused) {} +static inline void unwind__finish_access(struct maps *maps __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 maps *maps __maybe_unused, + struct map *map __maybe_unused, + bool *initialized __maybe_unused) +{ + return 0; +} + +static inline void unwind__flush_access(struct maps *maps __maybe_unused) {} +static inline void unwind__finish_access(struct maps *maps __maybe_unused) {} +#endif /* HAVE_DWARF_UNWIND_SUPPORT */ +#endif /* __UNWIND_H */ |