public static byte getByteAtOffset(Object object, int offset) { if (VM.VerifyAssertions) VM.assert(VM.NOT_REACHED); return -1; }
  public static void setReturnAddress(VM_Address fp, VM_Address newAddr) {    if (VM.VerifyAssertions) VM.assert(VM.NOT_REACHED);  // call site should have been hijacked by magic in compiler  }  //---------------------------------------//  //           Memory Access.              //  //---------------------------------------//  /**   * Get byte at arbitrary (byte) offset from object.    * Clients must not depend on whether or not the byte is zero or sign extended as it is loaded.   * (In other words, mask off all but the lower 8 bits before using the value).   */  public static byte getByteAtOffset(Object object, int offset) {    if (VM.VerifyAssertions) VM.assert(VM.NOT_REACHED);  // call site should have been hijacked by magic in compiler    return -1;  }