129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*
|
|
* 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>
|
|
|
|
/*
|
|
* Profiling data types used for gcc 3.4 and above - these are defined by
|
|
* gcc and need to be kept as close to the original definition as possible to
|
|
* remain compatible.
|
|
*/
|
|
#define GCOV_COUNTERS 5
|
|
#define GCOV_DATA_MAGIC ((unsigned int) 0x67636461)
|
|
#define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000)
|
|
#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
|
|
|
|
/**
|
|
* struct gcov_fn_info - profiling meta data per function
|
|
* @ident: object file-unique function identifier
|
|
* @checksum: function checksum
|
|
* @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 checksum;
|
|
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
|
|
* @next: list head for a singly-linked list
|
|
* @stamp: time stamp
|
|
* @filename: name of the associated gcov data file
|
|
* @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_info *next;
|
|
unsigned int stamp;
|
|
const char *filename;
|
|
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 */
|