1 files changed, 22 insertions, 0 deletions
diff --git a/src/runtime/os_windows_arm.go b/src/runtime/os_windows_arm.go
new file mode 100644
index 0000000..10aff75
--- /dev/null
+++ b/src/runtime/os_windows_arm.go
@@ -0,0 +1,22 @@
+// Copyright 2018 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 runtime
+
+import "unsafe"
+
+//go:nosplit
+func cputicks() int64 {
+	var counter int64
+	stdcall1(_QueryPerformanceCounter, uintptr(unsafe.Pointer(&counter)))
+	return counter
+}
+
+func checkgoarm() {
+	if goarm < 7 {
+		print("Need atomic synchronization instructions, coprocessor ",
+			"access instructions. Recompile using GOARM=7.\n")
+		exit(1)
+	}
+}