vendor: Update github.com/minio/sha256-simd, CPU detection (Linux)

vendor/github.com/minio/sha256-simd/cpuid_386.s

@@ -1,4 +1,24 @@
-// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+// The MIT License (MIT)
+//
+// Copyright (c) 2015 Klaus Post
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 
 // +build 386,!gccgo
 

vendor/github.com/minio/sha256-simd/cpuid_amd64.s

@@ -1,4 +1,24 @@
-// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+// The MIT License (MIT)
+//
+// Copyright (c) 2015 Klaus Post
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 
 // +build amd64,!gccgo
 

vendor/github.com/minio/sha256-simd/cpuid_arm.go

@@ -28,6 +28,5 @@ func xgetbv(index uint32) (eax, edx uint32) {
 }
 
 func haveArmSha() bool {
-	// TODO: Implement feature detection for ARM
-	return true
+	return false
 }

vendor/github.com/minio/sha256-simd/cpuid_linux_arm64.go

@@ -0,0 +1,49 @@
+// +build arm64,linux
+
+// Minio Cloud Storage, (C) 2016 Minio, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package sha256
+
+import (
+	"bytes"
+	"io/ioutil"
+)
+
+func cpuid(op uint32) (eax, ebx, ecx, edx uint32) {
+	return 0, 0, 0, 0
+}
+
+func cpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
+	return 0, 0, 0, 0
+}
+
+func xgetbv(index uint32) (eax, edx uint32) {
+	return 0, 0
+}
+
+// File to check for cpu capabilities.
+const procCPUInfo = "/proc/cpuinfo"
+
+// Feature to check for.
+const sha256Feature = "sha2"
+
+func haveArmSha() bool {
+	cpuInfo, err := ioutil.ReadFile(procCPUInfo)
+	if err != nil {
+		return false
+	}
+	return bytes.Contains(cpuInfo, []byte(sha256Feature))
+}

vendor/github.com/minio/sha256-simd/cpuid_others_arm64.go

@@ -1,3 +1,5 @@
+// +build arm64,!linux
+
 // Minio Cloud Storage, (C) 2016 Minio, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -27,7 +29,7 @@ func xgetbv(index uint32) (eax, edx uint32) {
 	return 0, 0
 }
 
+// Check for sha2 instruction flag.
 func haveArmSha() bool {
-	// TODO: Implement feature detection for ARM
-	return true
+	return false
 }

vendor/github.com/minio/sha256-simd/sha256.go

@@ -89,7 +89,8 @@ func New() hash.Hash {
 		d.Reset()
 		return d
 	}
-	// default back to the standard golang implementation
+	// Fallback to the standard golang implementation
+	// if no features were found.
 	return sha256.New()
 }
 

vendor/manifest

@@ -205,8 +205,8 @@
 		{
 			"importpath": "github.com/minio/sha256-simd",
 			"repository": "https://github.com/minio/sha256-simd",
-			"vcs": "",
-			"revision": "672e7bc9f3482375df73741cf57a157fe187ec26",
+			"vcs": "git",
+			"revision": "e82e73b775766b9011503e80e6772fc32b9afc5b",
 			"branch": "master"
 		},
 		{