Initial commit: Go 1.23 release state

src/runtime/os_netbsd_arm.go

@@ -0,0 +1,36 @@
+// Copyright 2013 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_R15] = uint32(abi.FuncPCABI0(lwp_tramp))
+	mc.__gregs[_REG_R13] = uint32(uintptr(stk))
+	mc.__gregs[_REG_R0] = uint32(uintptr(unsafe.Pointer(mp)))
+	mc.__gregs[_REG_R1] = uint32(uintptr(unsafe.Pointer(gp)))
+	mc.__gregs[_REG_R2] = uint32(fn)
+}
+
+func checkgoarm() {
+	// TODO(minux): FP checks like in os_linux_arm.go.
+
+	// osinit not called yet, so ncpu not set: must use getncpu directly.
+	if getncpu() > 1 && goarm < 7 {
+		print("runtime: this system has multiple CPUs and must use\n")
+		print("atomic synchronization instructions. Recompile using GOARM=7.\n")
+		exit(1)
+	}
+}
+
+//go:nosplit
+func cputicks() int64 {
+	// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
+	return nanotime()
+}