VirtualFree := kernel32.NewProc("VirtualFree")
	const (
		MEM_COMMIT     = 0x00001000
		MEM_RESERVE    = 0x00002000
		MEM_RELEASE    = 0x8000
		PAGE_READWRITE = 0x04
	)
	mem, _, err := syscall.Syscall6(VirtualAlloc.Addr(), 4, 0, 1<<20, MEM_COMMIT|MEM_RESERVE, PAGE_READWRITE, 0, 0)
	if err != 0 {
		t.Fatalf("VirtualAlloc failed: %v", err)
	}
	defer syscall.Syscall(VirtualFree.Addr(), 3, mem, 1<<20, MEM_RELEASE)

	"unsafe"
)

func seek(fd int, offset int64, whence int) (int64, syscall.Errno) {
	var newoffset int64
	offsetLow := uint32(offset & 0xffffffff)
	offsetHigh := uint32((offset >> 32) & 0xffffffff)
	_, _, err := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offsetHigh), uintptr(offsetLow), uintptr(unsafe.Pointer(&newoffset)), uintptr(whence), 0)
	return newoffset, err

	var _p0 *byte
	_p0, err = BytePtrFromString(old)
	if err != nil {
		return
	}
	var _p1 *byte
	_p1, err = BytePtrFromString(aname)
	if err != nil {
		return
	}
	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
	if int32(r0) == -1 {
		err = e1
	}
	return
}

	var _p0 *byte
	_p0, err = BytePtrFromString(old)
	if err != nil {
		return
	}
	var _p1 *byte
	_p1, err = BytePtrFromString(aname)
	if err != nil {
		return
	}
	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
	if int32(r0) == -1 {
		err = e1
	}
	return
}

	var _p0 *byte
	_p0, err = BytePtrFromString(old)
	if err != nil {
		return
	}
	var _p1 *byte
	_p1, err = BytePtrFromString(aname)
	if err != nil {
		return
	}
	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
	if int32(r0) == -1 {
		err = e1
	}
	return
}

	var _p0 *byte
	_p0, err = BytePtrFromString(old)
	if err != nil {
		return
	}
	var _p1 *byte
	_p1, err = BytePtrFromString(aname)
	if err != nil {
		return
	}
	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
	if int32(r0) == -1 {
		err = e1
	}
	return
}

func GetRandom(p []byte, flags GetRandomFlag) (n int, err error) {
	if len(p) == 0 {
		return 0, nil
	}
	if getrandomUnsupported.Load() {
		return 0, syscall.ENOSYS
	}
	r1, _, errno := syscall6(uintptr(unsafe.Pointer(&procGetrandom)),
		3,
		uintptr(unsafe.Pointer(&p[0])),
		uintptr(len(p)),
		uintptr(flags),
		0, 0, 0)
	if errno != 0 {
		if errno == syscall.ENOSYS {
			getrandomUnsupported.Store(true)

// System calls for arm, Linux
//

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT ·Syscall(SB),NOSPLIT,$0-28
	B	syscall·Syscall(SB)

TEXT ·Syscall6(SB),NOSPLIT,$0-40
	B	syscall·Syscall6(SB)

TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
	BL	runtime·entersyscall(SB)
	MOVW	trap+0(FP), R7
	MOVW	a1+4(FP), R0
	MOVW	a2+8(FP), R1
	MOVW	a3+12(FP), R2
	MOVW	$0, R3

	var _p0 *byte
	_p0, err = BytePtrFromString(old)
	if err != nil {
		return
	}
	var _p1 *byte
	_p1, err = BytePtrFromString(aname)
	if err != nil {
		return
	}
	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
	if int32(r0) == -1 {
		err = e1
	}
	return
}

func syscall_rawSyscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)

//go:linkname syscall_syscall syscall.syscall
//go:linkname syscall_syscall6 syscall.syscall6
//go:linkname syscall_syscall10 syscall.syscall10
//go:linkname syscall_rawSyscall syscall.rawSyscall
//go:linkname syscall_rawSyscall6 syscall.rawSyscall6