1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *  Profiling infrastructure declarations.
 4 *
 5 *  This file is based on gcc-internal definitions. Data structures are
 6 *  defined to be compatible with gcc counterparts. For a better
 7 *  understanding, refer to gcc source: gcc/gcov-io.h.
 8 *
 9 *    Copyright IBM Corp. 2009
10 *    Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
11 *
12 *    Uses gcc-internal data definitions.
13 */
14
15#ifndef GCOV_H
16#define GCOV_H GCOV_H
17
18#include <linux/module.h>
19#include <linux/types.h>
20
21/*
22 * Profiling data types used for gcc 3.4 and above - these are defined by
23 * gcc and need to be kept as close to the original definition as possible to
24 * remain compatible.
25 */
26#define GCOV_DATA_MAGIC		((unsigned int) 0x67636461)
27#define GCOV_TAG_FUNCTION	((unsigned int) 0x01000000)
28#define GCOV_TAG_COUNTER_BASE	((unsigned int) 0x01a10000)
29#define GCOV_TAG_FOR_COUNTER(count)					\
30	(GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17))
31
32#if BITS_PER_LONG >= 64
33typedef long gcov_type;
34#else
35typedef long long gcov_type;
36#endif
37
38/* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so
39 * we cannot use full definition here and they need to be placed in gcc specific
40 * implementation of gcov. This also means no direct access to the members in
41 * generic code and usage of the interface below.*/
42struct gcov_info;
43
44/* Interface to access gcov_info data  */
45const char *gcov_info_filename(struct gcov_info *info);
46unsigned int gcov_info_version(struct gcov_info *info);
47struct gcov_info *gcov_info_next(struct gcov_info *info);
48void gcov_info_link(struct gcov_info *info);
49void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info);
50bool gcov_info_within_module(struct gcov_info *info, struct module *mod);
51size_t convert_to_gcda(char *buffer, struct gcov_info *info);
52
53/* Base interface. */
54enum gcov_action {
55	GCOV_ADD,
56	GCOV_REMOVE,
57};
58
59void gcov_event(enum gcov_action action, struct gcov_info *info);
60void gcov_enable_events(void);
61
62/* writing helpers */
63size_t store_gcov_u32(void *buffer, size_t off, u32 v);
64size_t store_gcov_u64(void *buffer, size_t off, u64 v);
 
 
 
 
 
 
 
65
66/* gcov_info control. */
67void gcov_info_reset(struct gcov_info *info);
68int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
69void gcov_info_add(struct gcov_info *dest, struct gcov_info *source);
70struct gcov_info *gcov_info_dup(struct gcov_info *info);
71void gcov_info_free(struct gcov_info *info);
72
73struct gcov_link {
74	enum {
75		OBJ_TREE,
76		SRC_TREE,
77	} dir;
78	const char *ext;
79};
80extern const struct gcov_link gcov_link[];
81
82extern int gcov_events_enabled;
83extern struct mutex gcov_lock;
84
85#endif /* GCOV_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *  Profiling infrastructure declarations.
 4 *
 5 *  This file is based on gcc-internal definitions. Data structures are
 6 *  defined to be compatible with gcc counterparts. For a better
 7 *  understanding, refer to gcc source: gcc/gcov-io.h.
 8 *
 9 *    Copyright IBM Corp. 2009
10 *    Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
11 *
12 *    Uses gcc-internal data definitions.
13 */
14
15#ifndef GCOV_H
16#define GCOV_H GCOV_H
17
 
18#include <linux/types.h>
19
20/*
21 * Profiling data types used for gcc 3.4 and above - these are defined by
22 * gcc and need to be kept as close to the original definition as possible to
23 * remain compatible.
24 */
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
32typedef long gcov_type;
33#else
34typedef long long gcov_type;
35#endif
36
37/* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so
38 * we cannot use full definition here and they need to be placed in gcc specific
39 * implementation of gcov. This also means no direct access to the members in
40 * generic code and usage of the interface below.*/
41struct gcov_info;
42
43/* Interface to access gcov_info data  */
44const char *gcov_info_filename(struct gcov_info *info);
45unsigned int gcov_info_version(struct gcov_info *info);
46struct gcov_info *gcov_info_next(struct gcov_info *info);
47void gcov_info_link(struct gcov_info *info);
48void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info);
 
 
49
50/* Base interface. */
51enum gcov_action {
52	GCOV_ADD,
53	GCOV_REMOVE,
54};
55
56void gcov_event(enum gcov_action action, struct gcov_info *info);
57void gcov_enable_events(void);
58
59/* Iterator control. */
60struct seq_file;
61struct gcov_iterator;
62
63struct gcov_iterator *gcov_iter_new(struct gcov_info *info);
64void gcov_iter_free(struct gcov_iterator *iter);
65void gcov_iter_start(struct gcov_iterator *iter);
66int gcov_iter_next(struct gcov_iterator *iter);
67int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq);
68struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter);
69
70/* gcov_info control. */
71void gcov_info_reset(struct gcov_info *info);
72int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
73void gcov_info_add(struct gcov_info *dest, struct gcov_info *source);
74struct gcov_info *gcov_info_dup(struct gcov_info *info);
75void gcov_info_free(struct gcov_info *info);
76
77struct gcov_link {
78	enum {
79		OBJ_TREE,
80		SRC_TREE,
81	} dir;
82	const char *ext;
83};
84extern const struct gcov_link gcov_link[];
 
 
 
85
86#endif /* GCOV_H */