1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Profiling infrastructure declarations.
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.
9 * Copyright IBM Corp. 2009
12 * Uses gcc-internal data definitions.
18 #include <linux/types.h>
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
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))
31 #if BITS_PER_LONG >= 64
32 typedef long gcov_type;
34 typedef long long gcov_type;
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.*/
43 /* Interface to access gcov_info data */
44 const char *gcov_info_filename(struct gcov_info *info);
45 unsigned int gcov_info_version(struct gcov_info *info);
46 struct gcov_info *gcov_info_next(struct gcov_info *info);
47 void gcov_info_link(struct gcov_info *info);
48 void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info);
56 void gcov_event(enum gcov_action action, struct gcov_info *info);
57 void gcov_enable_events(void);
59 /* Iterator control. */
63 struct gcov_iterator *gcov_iter_new(struct gcov_info *info);
64 void gcov_iter_free(struct gcov_iterator *iter);
65 void gcov_iter_start(struct gcov_iterator *iter);
66 int gcov_iter_next(struct gcov_iterator *iter);
67 int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq);
68 struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter);
70 /* gcov_info control. */
71 void gcov_info_reset(struct gcov_info *info);
72 int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
73 void gcov_info_add(struct gcov_info *dest, struct gcov_info *source);
74 struct gcov_info *gcov_info_dup(struct gcov_info *info);
75 void gcov_info_free(struct gcov_info *info);
84 extern const struct gcov_link gcov_link[];