[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / gcov / gcov.h

/*
 *  Profiling infrastructure declarations.
 *
 *  This file is based on gcc-internal definitions. Data structures are
 *  defined to be compatible with gcc counterparts. For a better
 *  understanding, refer to gcc source: gcc/gcov-io.h.
 *
 *    Copyright IBM Corp. 2009
 *    Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
 *
 *    Uses gcc-internal data definitions.
 */

#ifndef GCOV_H
#define GCOV_H GCOV_H

#include <linux/types.h>

/*
 * Profiling data types used for gcc 3.4 and above - these are defined by
 * gcc and need to be kept as close to the original definition as possible to
 * remain compatible.
 */
#define GCOV_COUNTERS		5
#define GCOV_DATA_MAGIC		((unsigned int) 0x67636461)
#define GCOV_TAG_FUNCTION	((unsigned int) 0x01000000)
#define GCOV_TAG_COUNTER_BASE	((unsigned int) 0x01a10000)
#define GCOV_TAG_FOR_COUNTER(count)					\
	(GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17))

#if BITS_PER_LONG >= 64
typedef long gcov_type;
#else
typedef long long gcov_type;
#endif

/**
 * struct gcov_fn_info - profiling meta data per function
 * @ident: object file-unique function identifier
 * @checksum: function checksum
 * @n_ctrs: number of values per counter type belonging to this function
 *
 * This data is generated by gcc during compilation and doesn't change
 * at run-time.
 */
struct gcov_fn_info {
	unsigned int ident;
	unsigned int checksum;
	unsigned int n_ctrs[0];
};

/**
 * struct gcov_ctr_info - profiling data per counter type
 * @num: number of counter values for this type
 * @values: array of counter values for this type
 * @merge: merge function for counter values of this type (unused)
 *
 * This data is generated by gcc during compilation and doesn't change
 * at run-time with the exception of the values array.
 */
struct gcov_ctr_info {
	unsigned int	num;
	gcov_type	*values;
	void		(*merge)(gcov_type *, unsigned int);
};

/**
 * struct gcov_info - profiling data per object file
 * @version: gcov version magic indicating the gcc version used for compilation
 * @next: list head for a singly-linked list
 * @stamp: time stamp
 * @filename: name of the associated gcov data file
 * @n_functions: number of instrumented functions
 * @functions: function data
 * @ctr_mask: mask specifying which counter types are active
 * @counts: counter data per counter type
 *
 * This data is generated by gcc during compilation and doesn't change
 * at run-time with the exception of the next pointer.
 */
struct gcov_info {
	unsigned int			version;
	struct gcov_info		*next;
	unsigned int			stamp;
	const char			*filename;
	unsigned int			n_functions;
	const struct gcov_fn_info	*functions;
	unsigned int			ctr_mask;
	struct gcov_ctr_info		counts[0];
};

/* Base interface. */
enum gcov_action {
	GCOV_ADD,
	GCOV_REMOVE,
};

void gcov_event(enum gcov_action action, struct gcov_info *info);
void gcov_enable_events(void);

/* Iterator control. */
struct seq_file;
struct gcov_iterator;

struct gcov_iterator *gcov_iter_new(struct gcov_info *info);
void gcov_iter_free(struct gcov_iterator *iter);
void gcov_iter_start(struct gcov_iterator *iter);
int gcov_iter_next(struct gcov_iterator *iter);
int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq);
struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter);

/* gcov_info control. */
void gcov_info_reset(struct gcov_info *info);
int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
void gcov_info_add(struct gcov_info *dest, struct gcov_info *source);
struct gcov_info *gcov_info_dup(struct gcov_info *info);
void gcov_info_free(struct gcov_info *info);

struct gcov_link {
	enum {
		OBJ_TREE,
		SRC_TREE,
	} dir;
	const char *ext;
};
extern const struct gcov_link gcov_link[];

#endif /* GCOV_H */
Commit	Line	Data
2521f2c2 PO	1	/*
	2	* Profiling infrastructure declarations.
	3	*
	4	* This file is based on gcc-internal definitions. Data structures are
	5	* defined to be compatible with gcc counterparts. For a better
	6	* understanding, refer to gcc source: gcc/gcov-io.h.
	7	*
	8	* Copyright IBM Corp. 2009
	9	* Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
	10	*
	11	* Uses gcc-internal data definitions.
	12	*/
	13
	14	#ifndef GCOV_H
	15	#define GCOV_H GCOV_H
	16
	17	#include <linux/types.h>
	18
	19	/*
	20	* Profiling data types used for gcc 3.4 and above - these are defined by
	21	* gcc and need to be kept as close to the original definition as possible to
	22	* remain compatible.
	23	*/
	24	#define GCOV_COUNTERS 5
	25	#define GCOV_DATA_MAGIC ((unsigned int) 0x67636461)
	26	#define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000)
	27	#define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000)
	28	#define GCOV_TAG_FOR_COUNTER(count) \
	29	(GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17))
	30
	31	#if BITS_PER_LONG >= 64
	32	typedef long gcov_type;
	33	#else
	34	typedef long long gcov_type;
	35	#endif
	36
	37	/**
	38	* struct gcov_fn_info - profiling meta data per function
	39	* @ident: object file-unique function identifier
	40	* @checksum: function checksum
	41	* @n_ctrs: number of values per counter type belonging to this function
	42	*
	43	* This data is generated by gcc during compilation and doesn't change
	44	* at run-time.
	45	*/
	46	struct gcov_fn_info {
	47	unsigned int ident;
	48	unsigned int checksum;
	49	unsigned int n_ctrs[0];
	50	};
	51
	52	/**
	53	* struct gcov_ctr_info - profiling data per counter type
	54	* @num: number of counter values for this type
	55	* @values: array of counter values for this type
	56	* @merge: merge function for counter values of this type (unused)
	57	*
	58	* This data is generated by gcc during compilation and doesn't change
	59	* at run-time with the exception of the values array.
	60	*/
	61	struct gcov_ctr_info {
	62	unsigned int num;
	63	gcov_type *values;
	64	void (merge)(gcov_type , unsigned int);
65	};
66
67	/**
68	* struct gcov_info - profiling data per object file
69	* @version: gcov version magic indicating the gcc version used for compilation
70	* @next: list head for a singly-linked list
71	* @stamp: time stamp
72	* @filename: name of the associated gcov data file
73	* @n_functions: number of instrumented functions
74	* @functions: function data
75	* @ctr_mask: mask specifying which counter types are active
76	* @counts: counter data per counter type
77	*
78	* This data is generated by gcc during compilation and doesn't change
79	* at run-time with the exception of the next pointer.
80	*/
81	struct gcov_info {
82	unsigned int version;
83	struct gcov_info *next;
84	unsigned int stamp;
85	const char *filename;
86	unsigned int n_functions;
87	const struct gcov_fn_info *functions;
88	unsigned int ctr_mask;
89	struct gcov_ctr_info counts[0];
90	};
91
92	/* Base interface. */
93	enum gcov_action {
94	GCOV_ADD,
95	GCOV_REMOVE,
96	};
97
98	void gcov_event(enum gcov_action action, struct gcov_info *info);
99	void gcov_enable_events(void);
100
101	/* Iterator control. */
102	struct seq_file;
103	struct gcov_iterator;
104
105	struct gcov_iterator gcov_iter_new(struct gcov_info info);
106	void gcov_iter_free(struct gcov_iterator *iter);
107	void gcov_iter_start(struct gcov_iterator *iter);
108	int gcov_iter_next(struct gcov_iterator *iter);
109	int gcov_iter_write(struct gcov_iterator iter, struct seq_file seq);
110	struct gcov_info gcov_iter_get_info(struct gcov_iterator iter);
111
112	/* gcov_info control. */
113	void gcov_info_reset(struct gcov_info *info);
114	int gcov_info_is_compatible(struct gcov_info info1, struct gcov_info info2);
115	void gcov_info_add(struct gcov_info dest, struct gcov_info source);
116	struct gcov_info gcov_info_dup(struct gcov_info info);
117	void gcov_info_free(struct gcov_info *info);
118
119	struct gcov_link {
120	enum {
121	OBJ_TREE,
122	SRC_TREE,
123	} dir;
124	const char *ext;
125	};
126	extern const struct gcov_link gcov_link[];
127
128	#endif /* GCOV_H */