[dev.cc] runtime: convert netbsd/amd64 port to Go

LGTM=rsc
R=rsc
CC=golang-codereviews
https://codereview.appspot.com/169620043

1 files changed, 16 insertions, 0 deletions

diff --git a/src/runtime/os1_netbsd_amd64.go b/src/runtime/os1_netbsd_amd64.go
new file mode 100644
index 000000000..5118b0c4f
--- /dev/null
+++ b/src/runtime/os1_netbsd_amd64.go
@@ -0,0 +1,16 @@
+// Copyright 2009 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"
+
+func lwp_mcontext_init(mc *mcontextt, stk unsafe.Pointer, mp *m, gp *g, fn uintptr) {
+	// Machine dependent mcontext initialisation for LWP.
+	mc.__gregs[_REG_RIP] = uint64(funcPC(lwp_tramp))
+	mc.__gregs[_REG_RSP] = uint64(uintptr(stk))
+	mc.__gregs[_REG_R8] = uint64(uintptr(unsafe.Pointer(mp)))
+	mc.__gregs[_REG_R9] = uint64(uintptr(unsafe.Pointer(gp)))
+	mc.__gregs[_REG_R12] = uint64(fn)
+}