// stack. However, since we're returning to an earlier stack frame and
	// need to pair with the entersyscall() call made by cgocall, we must
	// save syscall* and let reentersyscall restore them.
	savedsp := unsafe.Pointer(gp.syscallsp)
	savedpc := gp.syscallpc
	savedbp := gp.syscallbp
	exitsyscall() // coming out of cgo call
	gp.m.incgo = false
	if gp.m.isextra {
		gp.m.isExtraInC = false
	}

	osPreemptExtExit(gp.m)

	if mp.locks != 1 || mp.mallocing != 0 || mp.throwing != throwTypeNone || mp.preemptoff != "" || mp.dying != 0 {
		releasem(mp)
		return false
	}
	status := readgstatus(gp)
	if status&^_Gscan != _Grunning || gp.syscallsp != 0 {
		releasem(mp)
		return false
	}
	if GOOS == "windows" && mp.libcallsp != 0 {
		releasem(mp)
		return false
	}
	releasem(mp)
	return true
}