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/*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file is distributed under the University of Illinois Open Source
|* License. See LICENSE.TXT for details.
|*
\*===----------------------------------------------------------------------===*/
#include "InstrProfiling.h"
#include <string.h>
uint64_t __llvm_profile_get_size_for_buffer(void) {
return sizeof(uint64_t) * 7 +
PROFILE_RANGE_SIZE(data) * sizeof(__llvm_profile_data) +
PROFILE_RANGE_SIZE(counters) * sizeof(uint64_t) +
PROFILE_RANGE_SIZE(names) * sizeof(char);
}
int __llvm_profile_write_buffer(char *Buffer) {
const __llvm_profile_data *DataBegin = __llvm_profile_data_begin();
const __llvm_profile_data *DataEnd = __llvm_profile_data_end();
const uint64_t *CountersBegin = __llvm_profile_counters_begin();
const uint64_t *CountersEnd = __llvm_profile_counters_end();
const char *NamesBegin = __llvm_profile_names_begin();
const char *NamesEnd = __llvm_profile_names_end();
/* Calculate size of sections. */
const uint64_t DataSize = DataEnd - DataBegin;
const uint64_t CountersSize = CountersEnd - CountersBegin;
const uint64_t NamesSize = NamesEnd - NamesBegin;
/* Create the header. */
uint64_t Header[] = {
__llvm_profile_get_magic(),
__llvm_profile_get_version(),
DataSize,
CountersSize,
NamesSize,
(uint64_t)CountersBegin,
(uint64_t)NamesBegin
};
/* Write the data. */
#define UPDATE_memcpy(Data, Size) \
do { \
memcpy(Buffer, Data, Size); \
Buffer += Size; \
} while (0)
UPDATE_memcpy(Header, sizeof(Header));
UPDATE_memcpy(DataBegin, DataSize * sizeof(__llvm_profile_data));
UPDATE_memcpy(CountersBegin, CountersSize * sizeof(uint64_t));
UPDATE_memcpy(NamesBegin, NamesSize * sizeof(char));
#undef UPDATE_memcpy
return 0;
}
|
