Retro68/gcc/libgo/go/crypto/cipher/xor_ppc64x.go
Wolfgang Thaller 6fbf4226da gcc-9.1
2019-06-20 20:10:10 +02:00

31 lines
658 B
Go

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// +build ppc64 ppc64le
package cipher
// xorBytes xors the bytes in a and b. The destination should have enough
// space, otherwise xorBytes will panic. Returns the number of bytes xor'd.
func xorBytes(dst, a, b []byte) int {
n := len(a)
if len(b) < n {
n = len(b)
}
if n == 0 {
return 0
}
_ = dst[n-1]
xorBytesVSX(&dst[0], &a[0], &b[0], n)
return n
}
func xorWords(dst, a, b []byte) {
xorBytes(dst, a, b)
}
//go:noescape
func xorBytesVSX(dst, a, b *byte, n int)