1/*
2 * Copyright (c) 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
24package jdk.tools.jaotc.binformat.macho;
25
26import java.nio.ByteOrder;
27import jdk.tools.jaotc.binformat.macho.MachO.mach_header_64;
28
29/**
30 * Class that abstracts MACH-O target details.
31 *
32 */
33final class MachOTargetInfo {
34    /**
35     * Target architecture and subtype.
36     */
37    private static final int arch;
38    private static final int subarch;
39
40    /**
41     * Architecture endian-ness.
42     */
43    private static final int endian = mach_header_64.CPU_SUBTYPE_LITTLE_ENDIAN;
44
45    /**
46     * Target OS string.
47     */
48    private static final String osName;
49
50    static {
51        // Find the target arch details
52        String archStr = System.getProperty("os.arch").toLowerCase();
53
54        if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) {
55            System.out.println("Only Little Endian byte order supported!");
56        }
57
58        if (archStr.equals("amd64") || archStr.equals("x86_64")) {
59            arch = mach_header_64.CPU_TYPE_X86_64;
60            subarch = mach_header_64.CPU_SUBTYPE_I386_ALL;
61        } else {
62            System.out.println("Unsupported architecture " + archStr);
63            arch = mach_header_64.CPU_TYPE_ANY;
64            subarch = 0;
65        }
66
67        osName = System.getProperty("os.name").toLowerCase();
68    }
69
70    static int getMachOArch() {
71        return arch;
72    }
73
74    static int getMachOSubArch() {
75        return subarch;
76    }
77
78    static int getMachOEndian() {
79        return endian;
80    }
81
82    static String getOsName() {
83        return osName;
84    }
85}
86