[dev.cc] runtime: convert netbsd/amd64 port to Go
LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/169620043
diff --git a/src/runtime/os2_netbsd.go b/src/runtime/os2_netbsd.go
new file mode 100644
index 0000000..46576b9
--- /dev/null
+++ b/src/runtime/os2_netbsd.go
@@ -0,0 +1,18 @@
+// Copyright 2010 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
+
+const (
+ _SS_DISABLE = 4
+ _SIG_BLOCK = 1
+ _SIG_UNBLOCK = 2
+ _SIG_SETMASK = 3
+ _NSIG = 33
+ _SI_USER = 0
+
+ // From NetBSD's <sys/ucontext.h>
+ _UC_SIGMASK = 0x01
+ _UC_CPU = 0x04
+)