[linux-2.6-block.git] / tools / perf / util / unwind.h

/* 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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
71ad0f5e JO	2	#ifndef __UNWIND_H
	3	#define __UNWIND_H
	4
3dfed910	5	#include <linux/compiler.h>
d944c4ee	6	#include <linux/types.h>
c1529738	7	#include "util/map_symbol.h"
3dfed910	8
79b6bb73	9	struct maps;
3dfed910	10	struct perf_sample;
3dfed910	11	struct thread;
71ad0f5e JO	12
71ad0f5e JO	13	struct unwind_entry {
c1529738 ACM	14	struct map_symbol ms;
c1529738 ACM	15	u64 ip;
71ad0f5e JO	16	};
	17
	18	typedef int (unwind_entry_cb_t)(struct unwind_entry entry, void *arg);
	19
f83c0415	20	struct unwind_libunwind_ops {
79b6bb73 ACM	21	int (prepare_access)(struct maps maps);
	22	void (flush_access)(struct maps maps);
	23	void (finish_access)(struct maps maps);
f83c0415 HK	24	int (get_entries)(unwind_entry_cb_t cb, void arg,
	25	struct thread *thread,
	26	struct perf_sample *data, int max_stack);
	27	};
	28
9ff125d1	29	#ifdef HAVE_DWARF_UNWIND_SUPPORT
71ad0f5e	30	int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
71ad0f5e	31	struct thread *thread,
37676af1	32	struct perf_sample *data, int max_stack);
9ff125d1 JO	33	/* libunwind specific */
9ff125d1 JO	34	#ifdef HAVE_LIBUNWIND_SUPPORT
eeb118c5 HK	35	#ifndef LIBUNWIND__ARCH_REG_ID
	36	#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
	37	#endif
78ff1d6d HK	38
	39	#ifndef LIBUNWIND__ARCH_REG_SP
	40	#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
	41	#endif
	42
	43	#ifndef LIBUNWIND__ARCH_REG_IP
	44	#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
	45	#endif
	46
eeb118c5	47	int LIBUNWIND__ARCH_REG_ID(int regnum);
79b6bb73 ACM	48	int unwind__prepare_access(struct maps maps, struct map map, bool *initialized);
	49	void unwind__flush_access(struct maps *maps);
	50	void unwind__finish_access(struct maps *maps);
66f066d8	51	#else
79b6bb73	52	static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
a2873325 JO	53	struct map *map __maybe_unused,
a2873325 JO	54	bool *initialized __maybe_unused)
66f066d8 NK	55	{
	56	return 0;
	57	}
	58
79b6bb73 ACM	59	static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
79b6bb73 ACM	60	static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
9ff125d1	61	#endif
71ad0f5e JO	62	#else
71ad0f5e JO	63	static inline int
1d037ca1 IT	64	unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
1d037ca1 IT	65	void *arg __maybe_unused,
1d037ca1	66	struct thread *thread __maybe_unused,
37676af1 ACM	67	struct perf_sample *data __maybe_unused,
37676af1 ACM	68	int max_stack __maybe_unused)
71ad0f5e JO	69	{
	70	return 0;
	71	}
66f066d8	72
79b6bb73	73	static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
a2873325 JO	74	struct map *map __maybe_unused,
a2873325 JO	75	bool *initialized __maybe_unused)
66f066d8 NK	76	{
	77	return 0;
	78	}
	79
79b6bb73 ACM	80	static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
79b6bb73 ACM	81	static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
9ff125d1	82	#endif /* HAVE_DWARF_UNWIND_SUPPORT */
71ad0f5e	83	#endif /* __UNWIND_H */