[deliverable/linux.git] / tools / perf / util / unwind.h

#ifndef __UNWIND_H
#define __UNWIND_H

#include <linux/types.h>
#include "event.h"
#include "symbol.h"
#include "thread.h"

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
int LIBUNWIND__ARCH_REG_ID(int regnum);
int unwind__prepare_access(struct thread *thread, struct map *map);
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)
{
	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)
{
	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 */
Commit	Line	Data
71ad0f5e JO	1	#ifndef __UNWIND_H
	2	#define __UNWIND_H
	3
d944c4ee	4	#include <linux/types.h>
71ad0f5e JO	5	#include "event.h"
71ad0f5e JO	6	#include "symbol.h"
66f066d8	7	#include "thread.h"
71ad0f5e JO	8
	9	struct unwind_entry {
	10	struct map *map;
	11	struct symbol *sym;
	12	u64 ip;
	13	};
	14
	15	typedef int (unwind_entry_cb_t)(struct unwind_entry entry, void *arg);
	16
f83c0415 HK	17	struct unwind_libunwind_ops {
	18	int (prepare_access)(struct thread thread);
	19	void (flush_access)(struct thread thread);
	20	void (finish_access)(struct thread thread);
	21	int (get_entries)(unwind_entry_cb_t cb, void arg,
	22	struct thread *thread,
	23	struct perf_sample *data, int max_stack);
	24	};
	25
9ff125d1	26	#ifdef HAVE_DWARF_UNWIND_SUPPORT
71ad0f5e	27	int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
71ad0f5e	28	struct thread *thread,
37676af1	29	struct perf_sample *data, int max_stack);
9ff125d1 JO	30	/* libunwind specific */
9ff125d1 JO	31	#ifdef HAVE_LIBUNWIND_SUPPORT
eeb118c5 HK	32	#ifndef LIBUNWIND__ARCH_REG_ID
	33	#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
	34	#endif
	35	int LIBUNWIND__ARCH_REG_ID(int regnum);
d64ec10e	36	int unwind__prepare_access(struct thread thread, struct map map);
380b5143	37	void unwind__flush_access(struct thread *thread);
66f066d8 NK	38	void unwind__finish_access(struct thread *thread);
66f066d8 NK	39	#else
d64ec10e HK	40	static inline int unwind__prepare_access(struct thread *thread __maybe_unused,
d64ec10e HK	41	struct map *map __maybe_unused)
66f066d8 NK	42	{
	43	return 0;
	44	}
	45
380b5143	46	static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
66f066d8	47	static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
9ff125d1	48	#endif
71ad0f5e JO	49	#else
71ad0f5e JO	50	static inline int
1d037ca1 IT	51	unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
1d037ca1 IT	52	void *arg __maybe_unused,
1d037ca1	53	struct thread *thread __maybe_unused,
37676af1 ACM	54	struct perf_sample *data __maybe_unused,
37676af1 ACM	55	int max_stack __maybe_unused)
71ad0f5e JO	56	{
	57	return 0;
	58	}
66f066d8	59
d64ec10e HK	60	static inline int unwind__prepare_access(struct thread *thread __maybe_unused,
d64ec10e HK	61	struct map *map __maybe_unused)
66f066d8 NK	62	{
	63	return 0;
	64	}
	65
380b5143	66	static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
66f066d8	67	static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
9ff125d1	68	#endif /* HAVE_DWARF_UNWIND_SUPPORT */
71ad0f5e	69	#endif /* __UNWIND_H */