buf.write8(SEH_REG_BP)           // FP register

	// Notes are written in reverse order of appearance.
	buf.write8(uint8(movbp.Link.Pc))
	buf.writecode(UWOP_SET_FPREG, 0)

	buf.write8(uint8(pushbp.Link.Pc))
	buf.writecode(UWOP_PUSH_NONVOL, SEH_REG_BP)

	// The following 4 bytes reference the RVA of the exception handler.
	// The value is set to 0 for now, if an exception handler is needed,

	return RenameSys(src, dst)
}

// OpenFile captures time taken to call os.OpenFile
func OpenFile(name string, flag int, perm os.FileMode) (f *os.File, err error) {
	switch flag & writeMode {
	case writeMode:
		defer updateOSMetrics(osMetricOpenFileW, name)(err)
	default:
		defer updateOSMetrics(osMetricOpenFileR, name)(err)
	}
	return os.OpenFile(name, flag, perm)
}

	}
	return nil
}

// openFileWithFD return 'fd' based file descriptor
func openFileWithFD(name string, flag int, perm os.FileMode) (fd int, err error) {
	switch flag & writeMode {
	case writeMode:
		defer updateOSMetrics(osMetricOpenFileWFd, name)(err)
	default:
		defer updateOSMetrics(osMetricOpenFileRFd, name)(err)
	}
	var e error
	fd, e = syscall.Open(name, flag|syscall.O_CLOEXEC, uint32(perm))