Make Nix builds work

1 files changed, 50 insertions, 0 deletions

diff --git a/vendor/github.com/minio/sha256-simd/cpuid_other.go b/vendor/github.com/minio/sha256-simd/cpuid_other.go
new file mode 100644
index 0000000..97af6a1
--- /dev/null
+++ b/vendor/github.com/minio/sha256-simd/cpuid_other.go
@@ -0,0 +1,50 @@
+// Minio Cloud Storage, (C) 2021 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"
+        "runtime"
+
+        "github.com/klauspost/cpuid/v2"
+)
+
+var (
+        hasIntelSha = runtime.GOARCH == "amd64" && cpuid.CPU.Supports(cpuid.SHA, cpuid.SSSE3, cpuid.SSE4)
+        hasAvx512   = cpuid.CPU.Supports(cpuid.AVX512F, cpuid.AVX512DQ, cpuid.AVX512BW, cpuid.AVX512VL)
+)
+
+func hasArmSha2() bool {
+        if cpuid.CPU.Has(cpuid.SHA2) {
+                return true
+        }
+        if runtime.GOARCH != "arm64" || runtime.GOOS != "linux" {
+                return false
+        }
+
+        // Fall back to hacky cpuinfo parsing...
+        const procCPUInfo = "/proc/cpuinfo"
+
+        // Feature to check for.
+        const sha256Feature = "sha2"
+
+        cpuInfo, err := ioutil.ReadFile(procCPUInfo)
+        if err != nil {
+                return false
+        }
+        return bytes.Contains(cpuInfo, []byte(sha256Feature))
+}