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// SPDX-License-Identifier: Apache-2.0
/*
* libgcov skeleton reimplementation to build skiboot with gcov support
*
* Copyright 2015-2018 IBM Corp.
*/
#include <skiboot.h>
#include <compiler.h>
#include <stdio.h>
typedef long gcov_type;
/*
* This is GCC internal data structure. See GCC libgcc/libgcov.h for
* details.
*
* If gcc changes this, we have to change it.
*/
typedef unsigned int gcov_unsigned_int;
#if __GNUC__ == 4 && __GNUC_MINOR__ >= 9
#define GCOV_COUNTERS 9
#else
#define GCOV_COUNTERS 8
#endif
struct gcov_info
{
gcov_unsigned_int version;
struct gcov_info *next;
gcov_unsigned_int stamp;
const char *filename;
void (*merge[GCOV_COUNTERS])(gcov_type *, unsigned int);
unsigned int n_functions;
struct gcov_fn_info **functions;
};
/* We have a list of all gcov info set up at startup */
struct gcov_info *gcov_info_list;
void __gcov_init(struct gcov_info* f);
void skiboot_gcov_done(void);
void __gcov_flush(void);
void __gcov_merge_add(gcov_type *counters, unsigned int n_counters);
void __gcov_merge_single(gcov_type *counters, unsigned int n_counters);
void __gcov_merge_delta(gcov_type *counters, unsigned int n_counters);
void __gcov_merge_ior(gcov_type *counters, unsigned int n_counters);
void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters);
void __gcov_exit(void);
void __gcov_init(struct gcov_info* f)
{
static gcov_unsigned_int version = 0;
if (version == 0) {
printf("GCOV version: %u\n", f->version);
version = f->version;
}
if (gcov_info_list)
f->next = gcov_info_list;
gcov_info_list = f;
return;
}
void skiboot_gcov_done(void)
{
struct gcov_info *i = gcov_info_list;
if (i->filename)
printf("GCOV: gcov_info_list looks sane (first file: %s)\n",
i->filename);
else
prlog(PR_WARNING, "GCOV: gcov_info_list doesn't look sane. "
"i->filename == NULL.");
printf("GCOV: gcov_info_list at 0x%p\n", gcov_info_list);
}
void __gcov_merge_add(gcov_type *counters, unsigned int n_counters)
{
(void)counters;
(void)n_counters;
return;
}
void __gcov_flush(void)
{
return;
}
void __gcov_merge_single(gcov_type *counters, unsigned int n_counters)
{
(void)counters;
(void)n_counters;
return;
}
void __gcov_merge_delta(gcov_type *counters, unsigned int n_counters)
{
(void)counters;
(void)n_counters;
return;
}
void __gcov_merge_ior(gcov_type *counters, unsigned int n_counters)
{
(void)counters;
(void)n_counters;
return;
}
void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters)
{
(void)counters;
(void)n_counters;
}
void __gcov_exit(void)
{
}
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