https://github.com/torvalds/linux
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Tip revision: 0c744ea4f77d72b3dcebb7a8f2684633ec79be88 authored by Linus Torvalds on 01 January 2017, 22:31:53 UTC
Linux 4.10-rc2
Tip revision: 0c744ea
bswapdi.c
#include <linux/export.h>
#include <linux/compiler.h>

unsigned long long notrace __bswapdi2(unsigned long long u)
{
	return (((u) & 0xff00000000000000ull) >> 56) |
	       (((u) & 0x00ff000000000000ull) >> 40) |
	       (((u) & 0x0000ff0000000000ull) >> 24) |
	       (((u) & 0x000000ff00000000ull) >>  8) |
	       (((u) & 0x00000000ff000000ull) <<  8) |
	       (((u) & 0x0000000000ff0000ull) << 24) |
	       (((u) & 0x000000000000ff00ull) << 40) |
	       (((u) & 0x00000000000000ffull) << 56);
}

EXPORT_SYMBOL(__bswapdi2);
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