src/kernel/linux/v4.19/tools/perf/util/memswap.c

// SPDX-License-Identifier: GPL-2.0
#include <byteswap.h>
#include "memswap.h"
#include <linux/types.h>

void mem_bswap_32(void *src, int byte_size)
{
	u32 *m = src;
	while (byte_size > 0) {
		*m = bswap_32(*m);
		byte_size -= sizeof(u32);
		++m;
	}
}

void mem_bswap_64(void *src, int byte_size)
{
	u64 *m = src;

	while (byte_size > 0) {
		*m = bswap_64(*m);
		byte_size -= sizeof(u64);
		++m;
	}
}