func WaitForSigusr1(r, w int32, ready func(mp *M)) (int64, int64) {
	lockOSThread()
	// Make sure we can receive SIGUSR1.
	unblocksig(_SIGUSR1)

	waitForSigusr1.rdpipe = r
	waitForSigusr1.wrpipe = w

	mp := getg().m
	testSigusr1 = waitForSigusr1Callback
	ready(mp)

	// Wait for the signal. We use a pipe rather than a note
	// because write is always async-signal-safe.
	entersyscallblock()
	var b byte

// Called to initialize a new m (including the bootstrap m).
// Called on the new thread, cannot allocate memory.
func minit() {
	getg().m.procid = uint64(lwp_gettid())
	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned

// so it emits the test and keeps the call, giving the desired
// escape analysis result. The test is cheaper than the call.
var cgoAlwaysFalse bool

var cgo_yield = &_cgo_yield

func cgoNoCallback(v bool) {
	g := getg()
	if g.nocgocallback && v {
		panic("runtime: unexpected setting cgoNoCallback")
	}
	g.nocgocallback = v

		print("runtime: found obj at *(", hex(base), "+", hex(off), ")\n")

		// Dump the source (base) object
		gcDumpObject("base", base, off)

		// Dump the object
		gcDumpObject("obj", obj, ^uintptr(0))

		getg().m.traceback = 2
		throw("checkmark found unmarked object")
	}

	ai := arenaIndex(obj)
	arena := mheap_.arenas[ai.l1()][ai.l2()]
	arenaWord := (obj / heapArenaBytes / 8) % uintptr(len(arena.checkmarks.b))

// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname atomicwb
//go:nosplit
func atomicwb(ptr *unsafe.Pointer, new unsafe.Pointer) {
	slot := (*uintptr)(unsafe.Pointer(ptr))
	buf := getg().m.p.ptr().wbBuf.get2()
	buf[0] = *slot
	buf[1] = uintptr(new)
}

// atomicstorep performs *ptr = new atomically and invokes a write barrier.
//
//go:nosplit

func netpoll(delay int64) (gList, int32) {
	if iocphandle == _INVALID_HANDLE_VALUE {
		return gList{}, 0
	}

	var entries [64]overlappedEntry
	var wait uint32
	var toRun gList
	mp := getg().m

	if delay >= 1e15 {
		// An arbitrary cap on how long to wait for a timer.
		// 1e15 ns == ~11.5 days.
		delay = 1e15
	}

	if delay > 0 && mp.waitIocpHandle != 0 {

	}
	// Examine the CPU profiler's view. Filter it to only include samples from
	// the single test goroutine. Use labels to execute that filter: they should
	// apply to all work done while that goroutine is getg().m.curg, and they
	// should apply to no other goroutines.
	pprofStacks := make(map[string]int)
	for _, s := range prof.Sample {
		if s.Label["tracing"] != nil {
			var fns []string
			var leaf string

//   - github.com/bytedance/sonic
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname checkptrBase
func checkptrBase(p unsafe.Pointer) uintptr {
	// stack
	if gp := getg(); gp.stack.lo <= uintptr(p) && uintptr(p) < gp.stack.hi {
		// TODO(mdempsky): Walk the stack to identify the
		// specific stack frame or even stack object that p
		// points into.
		//

	checkFunc(f.f)
}

// Test to make sure G register is never reloaded from spill (spill of G is okay)
// See #25504
func TestNoGetgLoadReg(t *testing.T) {
	/*
		Original:
		func fff3(i int) *g {
			gee := getg()
			if i == 0 {
				fff()
			}
			return gee // here
		}
	*/
	c := testConfigARM64(t)
	f := c.Fun("b1",
		Bloc("b1",
			Valu("v1", OpInitMem, types.TypeMem, 0, nil),

	}
	if !cgoIsGoPointer(src) {
		return
	}
	if cgoIsGoPointer(unsafe.Pointer(dst)) {
		return
	}

	// If we are running on the system stack then dst might be an
	// address on the stack, which is OK.
	gp := getg()
	if gp == gp.m.g0 || gp == gp.m.gsignal {
		return
	}

	// Allocating memory can write to various mfixalloc structs
	// that look like they are non-Go memory.
	if gp.m.mallocing != 0 {
		return
	}