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51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
// +build linux,amd64,cgo
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/*
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* Minio Cloud Storage, (C) 2014-2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package sha1
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// #cgo CFLAGS: -DHAS_AVX2
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// #include <stdint.h>
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// #include <stdlib.h>
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// void sha1_transform(int32_t *hash, const char* input, size_t num_blocks);
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// void sha1_update_intel(int32_t *hash, const char* input, size_t num_blocks);
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import "C"
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import (
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"unsafe"
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"github.com/klauspost/cpuid"
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)
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func block(dig *digest, p []byte) {
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switch true {
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case cpuid.CPU.AVX2():
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blockAVX2(dig, p)
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case cpuid.CPU.SSE3():
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blockSSE3(dig, p)
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default:
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blockGeneric(dig, p)
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}
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}
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func blockAVX2(dig *digest, p []byte) {
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C.sha1_transform((*C.int32_t)(unsafe.Pointer(&dig.h[0])), (*C.char)(unsafe.Pointer(&p[0])), (C.size_t)(len(p)/chunk))
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}
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func blockSSE3(dig *digest, p []byte) {
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C.sha1_update_intel((*C.int32_t)(unsafe.Pointer(&dig.h[0])), (*C.char)(unsafe.Pointer(&p[0])), (C.size_t)(len(p)/chunk))
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}
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