public static void zeroPages(Address start, int len) throws InlinePragma { org.mmtk.vm.Memory.zeroPages(start, len);
public static void zeroPages(Address start, int bytes) throws InlinePragma { org.mmtk.vm.Memory.zeroPages(start, bytes);
  public static void zeroPages(Address start, int len) throws InlinePragma {    org.mmtk.vm.Memory.zeroPages(start, len);  }