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blake2s_amd64.go (936B)

      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 amd64 && gc && !purego
      6 // +build amd64,gc,!purego
      7 
      8 package blake2s
      9 
     10 import "golang.org/x/sys/cpu"
     11 
     12 var (
     13 	useSSE4  = cpu.X86.HasSSE41
     14 	useSSSE3 = cpu.X86.HasSSSE3
     15 	useSSE2  = cpu.X86.HasSSE2
     16 )
     17 
     18 //go:noescape
     19 func hashBlocksSSE2(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
     20 
     21 //go:noescape
     22 func hashBlocksSSSE3(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
     23 
     24 //go:noescape
     25 func hashBlocksSSE4(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
     26 
     27 func hashBlocks(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) {
     28 	switch {
     29 	case useSSE4:
     30 		hashBlocksSSE4(h, c, flag, blocks)
     31 	case useSSSE3:
     32 		hashBlocksSSSE3(h, c, flag, blocks)
     33 	case useSSE2:
     34 		hashBlocksSSE2(h, c, flag, blocks)
     35 	default:
     36 		hashBlocksGeneric(h, c, flag, blocks)
     37 	}
     38 }