init - add project files

vendor/github.com/minio/highwayhash/highwayhash_arm64.go

@@ -0,0 +1,81 @@
+// Copyright (c) 2017-2024 Minio Inc. All rights reserved.
+// Use of this source code is governed by a license that can be
+// found in the LICENSE file.
+
+//go:build !noasm && !appengine
+// +build !noasm,!appengine
+
+package highwayhash
+
+import (
+	"golang.org/x/sys/cpu"
+)
+
+var (
+	useSSE4 = false
+	useAVX2 = false
+	useNEON = cpu.ARM64.HasASIMD
+	useSVE  = cpu.ARM64.HasSVE
+	useSVE2 = false // cpu.ARM64.HasSVE2 -- disable until tested on real hardware
+	useVMX  = false
+)
+
+func init() {
+	if useSVE {
+		if vl, _ := getVectorLength(); vl != 256 {
+			//
+			// Since HighwahHash is designed for AVX2,
+			// SVE/SVE2 instructions only run correctly
+			// for vector length of 256
+			//
+			useSVE2 = false
+			useSVE = false
+		}
+	}
+}
+
+//go:noescape
+func initializeArm64(state *[16]uint64, key []byte)
+
+//go:noescape
+func updateArm64(state *[16]uint64, msg []byte)
+
+//go:noescape
+func getVectorLength() (vl, pl uint64)
+
+//go:noescape
+func updateArm64Sve(state *[16]uint64, msg []byte)
+
+//go:noescape
+func updateArm64Sve2(state *[16]uint64, msg []byte)
+
+//go:noescape
+func finalizeArm64(out []byte, state *[16]uint64)
+
+func initialize(state *[16]uint64, key []byte) {
+	if useNEON {
+		initializeArm64(state, key)
+	} else {
+		initializeGeneric(state, key)
+	}
+}
+
+func update(state *[16]uint64, msg []byte) {
+	if useSVE2 {
+		updateArm64Sve2(state, msg)
+	} else if useSVE {
+		updateArm64Sve(state, msg)
+	} else if useNEON {
+		updateArm64(state, msg)
+	} else {
+		updateGeneric(state, msg)
+	}
+}
+
+func finalize(out []byte, state *[16]uint64) {
+	if useNEON {
+		finalizeArm64(out, state)
+	} else {
+		finalizeGeneric(out, state)
+	}
+}