Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/runtime/os_netbsd_arm64.go b/src/runtime/os_netbsd_arm64.go
new file mode 100644
index 0000000..2dda9c9
--- /dev/null
+++ b/src/runtime/os_netbsd_arm64.go
@@ -0,0 +1,26 @@
+// 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 runtime
+
+import (
+	"internal/abi"
+	"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_ELR] = uint64(abi.FuncPCABI0(lwp_tramp))
+	mc.__gregs[_REG_X31] = uint64(uintptr(stk))
+	mc.__gregs[_REG_X0] = uint64(uintptr(unsafe.Pointer(mp)))
+	mc.__gregs[_REG_X1] = uint64(uintptr(unsafe.Pointer(mp.g0)))
+	mc.__gregs[_REG_X2] = uint64(fn)
+}
+
+//go:nosplit
+func cputicks() int64 {
+	// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand().
+	// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
+	return nanotime()
+}