Adding upstream version 1.21.8.upstream/1.21.8

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

1 files changed, 25 insertions, 0 deletions

diff --git a/src/runtime/os_linux_arm64.go b/src/runtime/os_linux_arm64.go
new file mode 100644
index 0000000..2daa56f
--- /dev/null
+++ b/src/runtime/os_linux_arm64.go
@@ -0,0 +1,25 @@
+// Copyright 2015 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.
+
+//go:build arm64
+
+package runtime
+
+import "internal/cpu"
+
+func archauxv(tag, val uintptr) {
+	switch tag {
+	case _AT_HWCAP:
+		cpu.HWCap = uint(val)
+	}
+}
+
+func osArchInit() {}
+
+//go:nosplit
+func cputicks() int64 {
+	// Currently cputicks() is used in blocking profiler and to seed fastrand().
+	// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
+	return nanotime()
+}