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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 | */ | |
2521f2c2 PO |
24 | #define GCOV_DATA_MAGIC ((unsigned int) 0x67636461) |
25 | #define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000) | |
26 | #define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000) | |
27 | #define GCOV_TAG_FOR_COUNTER(count) \ | |
28 | (GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17)) | |
29 | ||
30 | #if BITS_PER_LONG >= 64 | |
31 | typedef long gcov_type; | |
32 | #else | |
33 | typedef long long gcov_type; | |
34 | #endif | |
35 | ||
8cbce376 FH |
36 | /* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so |
37 | * we cannot use full definition here and they need to be placed in gcc specific | |
38 | * implementation of gcov. This also means no direct access to the members in | |
39 | * generic code and usage of the interface below.*/ | |
40 | struct gcov_info; | |
41 | ||
42 | /* Interface to access gcov_info data */ | |
43 | const char *gcov_info_filename(struct gcov_info *info); | |
44 | unsigned int gcov_info_version(struct gcov_info *info); | |
45 | struct gcov_info *gcov_info_next(struct gcov_info *info); | |
46 | void gcov_info_link(struct gcov_info *info); | |
47 | void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info); | |
2521f2c2 PO |
48 | |
49 | /* Base interface. */ | |
50 | enum gcov_action { | |
51 | GCOV_ADD, | |
52 | GCOV_REMOVE, | |
53 | }; | |
54 | ||
55 | void gcov_event(enum gcov_action action, struct gcov_info *info); | |
56 | void gcov_enable_events(void); | |
57 | ||
58 | /* Iterator control. */ | |
59 | struct seq_file; | |
60 | struct gcov_iterator; | |
61 | ||
62 | struct gcov_iterator *gcov_iter_new(struct gcov_info *info); | |
63 | void gcov_iter_free(struct gcov_iterator *iter); | |
64 | void gcov_iter_start(struct gcov_iterator *iter); | |
65 | int gcov_iter_next(struct gcov_iterator *iter); | |
66 | int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq); | |
67 | struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter); | |
68 | ||
69 | /* gcov_info control. */ | |
70 | void gcov_info_reset(struct gcov_info *info); | |
71 | int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2); | |
72 | void gcov_info_add(struct gcov_info *dest, struct gcov_info *source); | |
73 | struct gcov_info *gcov_info_dup(struct gcov_info *info); | |
74 | void gcov_info_free(struct gcov_info *info); | |
75 | ||
76 | struct gcov_link { | |
77 | enum { | |
78 | OBJ_TREE, | |
79 | SRC_TREE, | |
80 | } dir; | |
81 | const char *ext; | |
82 | }; | |
83 | extern const struct gcov_link gcov_link[]; | |
84 | ||
85 | #endif /* GCOV_H */ |