Make Nix builds work

1 files changed, 66 insertions, 0 deletions

diff --git a/vendor/golang.org/x/sys/cpu/byteorder.go b/vendor/golang.org/x/sys/cpu/byteorder.go
new file mode 100644
index 0000000..271055b
--- /dev/null
+++ b/vendor/golang.org/x/sys/cpu/byteorder.go
@@ -0,0 +1,66 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cpu
+
+import (
+        "runtime"
+)
+
+// byteOrder is a subset of encoding/binary.ByteOrder.
+type byteOrder interface {
+        Uint32([]byte) uint32
+        Uint64([]byte) uint64
+}
+
+type littleEndian struct{}
+type bigEndian struct{}
+
+func (littleEndian) Uint32(b []byte) uint32 {
+        _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
+        return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
+}
+
+func (littleEndian) Uint64(b []byte) uint64 {
+        _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
+        return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
+                uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
+}
+
+func (bigEndian) Uint32(b []byte) uint32 {
+        _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
+        return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
+}
+
+func (bigEndian) Uint64(b []byte) uint64 {
+        _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
+        return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
+                uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
+}
+
+// hostByteOrder returns littleEndian on little-endian machines and
+// bigEndian on big-endian machines.
+func hostByteOrder() byteOrder {
+        switch runtime.GOARCH {
+        case "386", "amd64", "amd64p32",
+                "alpha",
+                "arm", "arm64",
+                "loong64",
+                "mipsle", "mips64le", "mips64p32le",
+                "nios2",
+                "ppc64le",
+                "riscv", "riscv64",
+                "sh":
+                return littleEndian{}
+        case "armbe", "arm64be",
+                "m68k",
+                "mips", "mips64", "mips64p32",
+                "ppc", "ppc64",
+                "s390", "s390x",
+                "shbe",
+                "sparc", "sparc64":
+                return bigEndian{}
+        }
+        panic("unknown architecture")
+}