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blamka_amd64.go (1366B)

      1 // Copyright 2017 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 argon2
      9 
     10 import "golang.org/x/sys/cpu"
     11 
     12 func init() {
     13 	useSSE4 = cpu.X86.HasSSE41
     14 }
     15 
     16 //go:noescape
     17 func mixBlocksSSE2(out, a, b, c *block)
     18 
     19 //go:noescape
     20 func xorBlocksSSE2(out, a, b, c *block)
     21 
     22 //go:noescape
     23 func blamkaSSE4(b *block)
     24 
     25 func processBlockSSE(out, in1, in2 *block, xor bool) {
     26 	var t block
     27 	mixBlocksSSE2(&t, in1, in2, &t)
     28 	if useSSE4 {
     29 		blamkaSSE4(&t)
     30 	} else {
     31 		for i := 0; i < blockLength; i += 16 {
     32 			blamkaGeneric(
     33 				&t[i+0], &t[i+1], &t[i+2], &t[i+3],
     34 				&t[i+4], &t[i+5], &t[i+6], &t[i+7],
     35 				&t[i+8], &t[i+9], &t[i+10], &t[i+11],
     36 				&t[i+12], &t[i+13], &t[i+14], &t[i+15],
     37 			)
     38 		}
     39 		for i := 0; i < blockLength/8; i += 2 {
     40 			blamkaGeneric(
     41 				&t[i], &t[i+1], &t[16+i], &t[16+i+1],
     42 				&t[32+i], &t[32+i+1], &t[48+i], &t[48+i+1],
     43 				&t[64+i], &t[64+i+1], &t[80+i], &t[80+i+1],
     44 				&t[96+i], &t[96+i+1], &t[112+i], &t[112+i+1],
     45 			)
     46 		}
     47 	}
     48 	if xor {
     49 		xorBlocksSSE2(out, in1, in2, &t)
     50 	} else {
     51 		mixBlocksSSE2(out, in1, in2, &t)
     52 	}
     53 }
     54 
     55 func processBlock(out, in1, in2 *block) {
     56 	processBlockSSE(out, in1, in2, false)
     57 }
     58 
     59 func processBlockXOR(out, in1, in2 *block) {
     60 	processBlockSSE(out, in1, in2, true)
     61 }