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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2521f2c2 PO |
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 | */ | |
2521f2c2 PO |
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 | ||
8cbce376 FH |
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.*/ | |
41 | struct gcov_info; | |
42 | ||
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); | |
2521f2c2 PO |
49 | |
50 | /* Base interface. */ | |
51 | enum gcov_action { | |
52 | GCOV_ADD, | |
53 | GCOV_REMOVE, | |
54 | }; | |
55 | ||
56 | void gcov_event(enum gcov_action action, struct gcov_info *info); | |
57 | void gcov_enable_events(void); | |
58 | ||
59 | /* Iterator control. */ | |
60 | struct seq_file; | |
61 | struct gcov_iterator; | |
62 | ||
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); | |
69 | ||
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); | |
76 | ||
77 | struct gcov_link { | |
78 | enum { | |
79 | OBJ_TREE, | |
80 | SRC_TREE, | |
81 | } dir; | |
82 | const char *ext; | |
83 | }; | |
84 | extern const struct gcov_link gcov_link[]; | |
85 | ||
86 | #endif /* GCOV_H */ |