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.macho; 27 28 import java.nio.ByteOrder; 29 import jdk.tools.jaotc.binformat.macho.MachO.mach_header_64; 30 31 /** 32 * Class that abstracts MACH-O target details. 33 * 34 */ 35 final class MachOTargetInfo { 36 /** 37 * Target architecture and subtype. 38 */ 39 private static final int arch; 40 private static final int subarch; 41 42 /** 43 * Architecture endian-ness. 44 */ 45 private static final int endian = mach_header_64.CPU_SUBTYPE_LITTLE_ENDIAN; 46 47 /** 48 * Target OS string. 49 */ 50 private static final String osName; 51 52 static { 53 // Find the target arch details 54 String archStr = System.getProperty("os.arch").toLowerCase(); 55 56 if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) { 57 System.out.println("Only Little Endian byte order supported!"); 58 } 59 60 if (archStr.equals("amd64") || archStr.equals("x86_64")) { 61 arch = mach_header_64.CPU_TYPE_X86_64; 62 subarch = mach_header_64.CPU_SUBTYPE_I386_ALL; 63 } else { 64 System.out.println("Unsupported architecture " + archStr); 65 arch = mach_header_64.CPU_TYPE_ANY; 66 subarch = 0; 67 } 68 69 osName = System.getProperty("os.name").toLowerCase(); 70 } 71 72 static int getMachOArch() { 73 return arch; 74 } 75 76 static int getMachOSubArch() { 77 return subarch; 78 } 79 80 static int getMachOEndian() { 81 return endian; 82 } 83 84 static String getOsName() { 85 return osName; 86 } 87 }