1 /*
   2  * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 
  26 package jdk.tools.jaotc.binformat.pecoff;
  27 
  28 import java.nio.ByteOrder;
  29 import jdk.tools.jaotc.binformat.pecoff.PECoff.IMAGE_FILE_HEADER;
  30 
  31 /**
  32  * Class that abstracts MACH-O target details.
  33  *
  34  */
  35 final class PECoffTargetInfo {
  36     /**
  37      * Target architecture.
  38      */
  39     private static final char arch;
  40 
  41     /**
  42      * Target OS string.
  43      */
  44     private static String osName;
  45 
  46     static {
  47         // Find the target arch details
  48         String archStr = System.getProperty("os.arch").toLowerCase();
  49         if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) {
  50             System.out.println("Only Little Endian byte order supported!");
  51         }
  52 
  53         if (archStr.equals("amd64") || archStr.equals("x86_64")) {
  54             arch = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_AMD64;
  55         } else {
  56             System.out.println("Unsupported architecture " + archStr);
  57             arch = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_UNKNOWN;
  58         }
  59 
  60         osName = System.getProperty("os.name").toLowerCase();
  61         if (!osName.contains("windows")) {
  62             System.out.println("Unsupported Operating System " + osName);
  63             osName = "Unknown";
  64         }
  65     }
  66 
  67     static char getPECoffArch() {
  68         return arch;
  69     }
  70 
  71     static String getOsName() {
  72         return osName;
  73     }
  74 }