| // Copyright 2016 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. | |
| //go:build !purego | |
| package sha1 | |
| import ( | |
| "crypto/internal/impl" | |
| "internal/cpu" | |
| ) | |
| var useSHA1 = cpu.S390X.HasSHA1 | |
| func init() { | |
| // CP Assist for Cryptographic Functions (CPACF) | |
| // https://www.ibm.com/docs/en/zos/3.1.0?topic=icsf-cp-assist-cryptographic-functions-cpacf | |
| impl.Register("sha1", "CPACF", &useSHA1) | |
| } | |
| //go:noescape | |
| func blockS390X(dig *digest, p []byte) | |
| func block(dig *digest, p []byte) { | |
| if useSHA1 { | |
| blockS390X(dig, p) | |
| } else { | |
| blockGeneric(dig, p) | |
| } | |
| } | |