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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package jdk.tools.jaotc.binformat.macho;

import java.nio.ByteOrder;
import jdk.tools.jaotc.binformat.macho.MachO.mach_header_64;

Class that abstracts MACH-O target details.
/**
 * Class that abstracts MACH-O target details.
 *
 */
final class MachOTargetInfo {
    
Target architecture and subtype.
/**
     * Target architecture and subtype.
     */
    private static final int arch;
    private static final int subarch;

    
Architecture endian-ness.
/**
     * Architecture endian-ness.
     */
    private static final int endian = mach_header_64.CPU_SUBTYPE_LITTLE_ENDIAN;

    
Target OS string.
/**
     * Target OS string.
     */
    private static final String osName;

    static {
        // Find the target arch details
        String archStr = System.getProperty("os.arch").toLowerCase();

        if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) {
            System.out.println("Only Little Endian byte order supported!");
        }

        if (archStr.equals("amd64") || archStr.equals("x86_64")) {
            arch = mach_header_64.CPU_TYPE_X86_64;
            subarch = mach_header_64.CPU_SUBTYPE_I386_ALL;
        } else {
            System.out.println("Unsupported architecture " + archStr);
            arch = mach_header_64.CPU_TYPE_ANY;
            subarch = 0;
        }

        osName = System.getProperty("os.name").toLowerCase();
    }

    static int getMachOArch() {
        return arch;
    }

    static int getMachOSubArch() {
        return subarch;
    }

    static int getMachOEndian() {
        return endian;
    }

    static String getOsName() {
        return osName;
    }
}