}

	// run the test for all order permutations of the incoming files
	for _, perm := range [][len(sources)]int{
		{0, 1, 2},
		{0, 2, 1},
		{1, 0, 2},
		{1, 2, 0},
		{2, 0, 1},
		{2, 1, 0},
	} {
		// create file order permutation
		files := make([]*syntax.File, len(sources))
		for i := range perm {
			files[i] = orig[perm[i]]
		}

		// type-check package with given file order permutation

//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys	Open(path string, mode int, perm uint32) (fd int, err error)
//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
//sys	Pathconf(path string, name int) (val int, err error)
//sys	pread(fd int, p []byte, offset int64) (n int, err error)

	MOVW.CS	$0, R8 // crash on syscall failure
	MOVW.CS	R8, (R8)
	JMP	0(PC)

TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0
	MOVW name+0(FP), R0	// arg 1 name
	MOVW mode+4(FP), R1	// arg 2 mode
	MOVW perm+8(FP), R2	// arg 3 perm
	MOVW $SYS_open, R7
	SWI $0
	MOVW.CS	$-1, R0
	MOVW	R0, ret+12(FP)
	RET

TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0
	MOVW fd+0(FP), R0	// arg 1 fd
	MOVW p+4(FP), R1	// arg 2 buf

	var wg sync.WaitGroup
	disks := er.getDisks()
	infos := make([]DiskInfo, len(disks))
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for _, i := range r.Perm(len(disks)) {
		i := i
		wg.Add(1)
		go func() {
			defer wg.Done()

			disk := disks[i]
			if disk == nil {
				infos[i].Error = errDiskNotFound.Error()
				return
			}

			t.Errorf("%d,%d: %#q already exists", ti, i, d)
			return
		}
		if err := os.MkdirAll(dd, perm); err != nil {
			t.Errorf("%d,%d: MkdirAll(%#q) failed: %v", ti, i, dd, err)
			return
		}
		fn, data := filepath.Join(dd, cmdfile), []byte("@echo "+d+"\r\n")
		if err := os.WriteFile(fn, data, perm); err != nil {
			t.Errorf("%d,%d: WriteFile(%#q) failed: %v", ti, i, fn, err)
			return
		}
	}

cc args...
	run the platform C compiler


cd dir
	change the working directory


chmod perm paths...
	change file mode bits

	Changes the permissions of the named files or directories to
	be equal to perm.
	Only numerical permissions are supported.

cmp [-q] file1 file2
	compare files for differences

	sysvicall2(&libc_clock_gettime, _CLOCK_MONOTONIC, uintptr(unsafe.Pointer(&ts)))
	return ts.tv_sec*1e9 + ts.tv_nsec
}

//go:nosplit
func open(path *byte, mode, perm int32) int32 {
	return int32(sysvicall3(&libc_open, uintptr(unsafe.Pointer(path)), uintptr(mode), uintptr(perm)))
}

func pthread_attr_destroy(attr *pthreadattr) int32 {
	return int32(sysvicall1(&libc_pthread_attr_destroy, uintptr(unsafe.Pointer(attr))))
}

//sys	Mknodat(fd int, path string, mode uint32, dev int) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys	Open(path string, mode int, perm uint32) (fd int, err error)
//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
//sys	Pathconf(path string, name int) (val int, err error)
//sys	read(fd int, p []byte) (n int, err error)

//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys	Open(path string, mode int, perm uint32) (fd int, err error)
//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
//sys	Pathconf(path string, name int) (val int, err error)
//sys	pread(fd int, p []byte, offset int64) (n int, err error)

// openFileNolog is the Windows implementation of OpenFile.
func openFileNolog(name string, flag int, perm FileMode) (*File, error) {
	if name == "" {
		return nil, &PathError{Op: "open", Path: name, Err: syscall.ENOENT}
	}
	path := fixLongPath(name)
	r, e := syscall.Open(path, flag|syscall.O_CLOEXEC, syscallMode(perm))
	if e != nil {
		// We should return EISDIR when we are trying to open a directory with write access.