sha512block_s390x.mx raw

   1  // Copyright 2016 The Go Authors. All rights reserved.
   2  // Use of this source code is governed by a BSD-style
   3  // license that can be found in the LICENSE file.
   4  
   5  //go:build !purego
   6  
   7  package sha512
   8  
   9  import (
  10  	"crypto/internal/fips140deps/cpu"
  11  	"crypto/internal/impl"
  12  )
  13  
  14  var useSHA512 = cpu.S390XHasSHA512
  15  
  16  func init() {
  17  	// CP Assist for Cryptographic Functions (CPACF)
  18  	// https://www.ibm.com/docs/en/zos/3.1.0?topic=icsf-cp-assist-cryptographic-functions-cpacf
  19  	impl.Register("sha512", "CPACF", &useSHA512)
  20  }
  21  
  22  //go:noescape
  23  func blockS390X(dig *Digest, p []byte)
  24  
  25  func block(dig *Digest, p []byte) {
  26  	if useSHA512 {
  27  		blockS390X(dig, p)
  28  	} else {
  29  		blockGeneric(dig, p)
  30  	}
  31  }
  32