1 /* 2 * Copyright (c) 2016, 2017, 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 package jdk.tools.jaotc.binformat.elf; 25 26 import java.nio.ByteOrder; 27 import jdk.tools.jaotc.binformat.elf.Elf; 28 import jdk.tools.jaotc.binformat.elf.Elf.Elf64_Ehdr; 29 30 /** 31 * Class that abstracts MACH-O target details. 32 * 33 */ 34 public class ElfTargetInfo { 35 /** 36 * Target architecture. 37 */ 38 private static final char arch; 39 40 /** 41 * Architecture endian-ness. 42 */ 43 private static final int endian = Elf64_Ehdr.ELFDATA2LSB; 44 45 /** 46 * Target OS string. 47 */ 48 private static String osName; 49 50 static { 51 // Find the target arch details 52 String archStr = System.getProperty("os.arch").toLowerCase(); 53 if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) { 54 System.out.println("Only Little Endian byte order supported!"); 55 } 56 57 if (archStr.equals("amd64") || archStr.equals("x86_64")) { 58 arch = Elf64_Ehdr.EM_X86_64; 59 } else { 60 System.out.println("Unsupported architecture " + archStr); 61 arch = Elf64_Ehdr.EM_NONE; 62 } 63 64 osName = System.getProperty("os.name").toLowerCase(); 65 if (!osName.equals("linux") && !osName.equals("sunos")) { 66 System.out.println("Unsupported Operating System " + osName); 67 osName = "Unknown"; 68 } 69 } 70 71 public static char getElfArch() { 72 return arch; 73 } 74 75 public static int getElfEndian() { 76 return endian; 77 } 78 79 public static String getOsName() { 80 return osName; 81 } 82 } 83