blob: 8c5130a5c1b57500b11ad31ebf30f4d6cb0adf97 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* 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>
/*
* GCC 4.6 drops the 'name' field from 'struct gcov_fn_info'.
*/
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
#define GCOV_FN_INFO_HAS_NAME_FIELD
#endif
/*
* Profiling data types used for at least gcc 4.4 and 4.6 - these are defined by
* gcc and need to be kept as close to the original definition as possible to
* remain compatible.
*/
#define GCOV_COUNTERS 10
#define GCOV_DATA_MAGIC ((unsigned int) 0x67636461)
#define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000)
#define GCOV_TAG_FUNCTION_LENGTH 3
#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
/*
* Source module info. The data structure is used in both runtime and
* profile-use phase.
*/
struct gcov_module_info {
unsigned int ident;
/*
* This is overloaded to mean two things:
* (1) means FDO/LIPO in instrumented binary.
* (2) means IS_PRIMARY in persistent file or memory copy used in profile-use.
*/
unsigned int is_primary;
unsigned int is_exported;
unsigned int lang;
char *da_filename;
char *source_filename;
unsigned int num_quote_paths;
unsigned int num_bracket_paths;
unsigned int num_cpp_defines;
unsigned int num_cpp_includes;
unsigned int num_cl_args;
char *string_array[1];
};
/**
* struct gcov_fn_info - profiling meta data per function
* @ident: object file-unique function identifier
* @lineno_checksum: function lineno checksum
* @cfg_checksum: function cfg checksum
* @dc_offset: direct call offset
* @name: function name
* @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 lineno_checksum;
unsigned int cfg_checksum;
unsigned int dc_offset;
#ifdef GCOV_FN_INFO_HAS_NAME_FIELD
const char *name;
#endif
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
* @modinfo: additional module information
* @next: list head for a singly-linked list
* @stamp: time stamp
* @filename: name of the associated gcov data file
* @eof_pos: end position of profile data
* @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_module_info *mod_info;
struct gcov_info *next;
unsigned int stamp;
const char *filename;
unsigned int eof_pos;
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 */
|
