// caller reserved spill space.
		p.dstSpill = alignUp(p.dstSpill, uintptr(t.Align_))
		p.dstSpill += t.Size_
	} else {
		// Register assignment failed.
		// Undo the work and stack assign.
		p.parts = oldParts

		// The Go ABI aligns arguments.
		p.dstStackSize = alignUp(p.dstStackSize, uintptr(t.Align_))

		// Copy just the size of the argument. Note that this

	//
	// The base address of the backing store is always page-aligned,
	// because it comes from the OS, so it's sufficient to align the
	// index.
	haveMin := s.min.Load()
	haveMax := s.max.Load()
	needMin := alignDown(uintptr(chunkIndex(base)), physPageSize/scSize)
	needMax := alignUp(uintptr(chunkIndex(limit)), physPageSize/scSize)

		p = alignUp(p, align)
		p2 := sysReserve(unsafe.Pointer(p), size)
		if p != uintptr(p2) {
			// Must have raced. Try again.
			sysFreeOS(p2, size)
			if retries++; retries == 100 {
				throw("failed to allocate aligned heap memory; too many retries")
			}
			goto retry
		}
		// Success.
		return p2, size
	default:
		// Trim off the unaligned parts.
		pAligned := alignUp(p, align)

	off  atomic.Uintptr
}

const traceRegionAllocBlockData = 64<<10 - unsafe.Sizeof(traceRegionAllocBlockHeader{})

// alloc allocates n-byte block. The block is always aligned to 8 bytes, regardless of platform.
func (a *traceRegionAlloc) alloc(n uintptr) *notInHeap {
	n = alignUp(n, 8)
	if n > traceRegionAllocBlockData {
		throw("traceRegion: alloc too large")
	}
	if a.dropping.Load() {
		throw("traceRegion: alloc with concurrent drop")
	}

		print("runtime: base = ", hex(base), ", limit = ", hex(limit), "\n")
		throw("sysGrow bounds not aligned to pallocChunkBytes")
	}

	// Walk up the tree and update the summary slices.
	for l := len(p.summary) - 1; l >= 0; l-- {
		// Figure out what part of the summary array this new address space needs.
		// Note that we need to align the ranges to the block width (1<<levelBits[l])

				throw("mem: uninitialised memory")
			}
		}
	}
}

func memRound(p uintptr) uintptr {
	return alignUp(p, physPageSize)
}

func initBloc() {
	bloc = memRound(firstmoduledata.end)
	blocMax = bloc
}

func sysAllocOS(n uintptr) unsafe.Pointer {
	lock(&memlock)
	p := memAlloc(n)
	memCheck()

		// The Linux implementation requires that the address
		// addr be page-aligned, and allows length to be zero.
		throw("unaligned sysNoHugePageOS")
	}
	madvise(v, n, _MADV_NOHUGEPAGE)
}

func sysHugePageCollapseOS(v unsafe.Pointer, n uintptr) {
	if uintptr(v)&(physPageSize-1) != 0 {
		// The Linux implementation requires that the address
		// addr be page-aligned, and allows length to be zero.
		throw("unaligned sysHugePageCollapseOS")

func call1073741824(typ, fn, stackArgs unsafe.Pointer, stackArgsSize, stackRetOffset, frameSize uint32, regArgs *abi.RegArgs)

func systemstack_switch()

// alignUp rounds n up to a multiple of a. a must be a power of 2.
//
//go:nosplit
func alignUp(n, a uintptr) uintptr {
	return (n + a - 1) &^ (a - 1)
}

// alignDown rounds n down to a multiple of a. a must be a power of 2.
//
//go:nosplit

okarg:
	// compute size needed for return parameters
	nret := uintptr(0)
	for _, t := range ft.OutSlice() {
		nret = alignUp(nret, uintptr(t.Align_)) + t.Size_
	}
	nret = alignUp(nret, goarch.PtrSize)

	// make sure we have a finalizer goroutine
	createfing()

	systemstack(func() {
		if !addfinalizer(e.data, (*funcval)(f.data), nret, fint, ot) {

	// might not actually be inlined anywhere.
	want := map[string][]string{
		"runtime": {
			"add",
			"acquirem",
			"add1",
			"addb",
			"adjustpanics",
			"adjustpointer",
			"alignDown",
			"alignUp",
			"bucketMask",
			"bucketShift",
			"chanbuf",
			"evacuated",
			"fastlog2",
			"float64bits",
			"funcspdelta",
			"getm",
			"getMCache",
			"isDirectIface",
			"itabHashFunc",