diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.go')
-rw-r--r-- | vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.go | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.go b/vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.go new file mode 100644 index 000000000..0c1c671c4 --- /dev/null +++ b/vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.go @@ -0,0 +1,30 @@ +// 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 s390x,!gccgo,!appengine + +package chacha20 + +var haveAsm = hasVectorFacility() + +const bufSize = 256 + +// hasVectorFacility reports whether the machine supports the vector +// facility (vx). +// Implementation in asm_s390x.s. +func hasVectorFacility() bool + +// xorKeyStreamVX is an assembly implementation of XORKeyStream. It must only +// be called when the vector facility is available. +// Implementation in asm_s390x.s. +//go:noescape +func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32, buf *[256]byte, len *int) + +func (c *Cipher) xorKeyStreamAsm(dst, src []byte) { + xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter, &c.buf, &c.len) +} + +// EXRL targets, DO NOT CALL! +func mvcSrcToBuf() +func mvcBufToDst() |