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/*
* 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 __XEN_GCOV_H__
#define __XEN_GCOV_H__ __XEN_GCOV_H__
#include <public/sysctl.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.
*/
typedef uint64_t gcov_type;
/**
* 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];
};
/**
* Sysctl operations for coverage
*/
#ifdef TEST_COVERAGE
int sysctl_coverage_op(xen_sysctl_coverage_op_t *op);
#endif
#endif /* __XEN_GCOV_H__ */
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