/*
* Copyright 2016-present Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package com.facebook.buck.macho;
import com.facebook.buck.util.immutables.BuckStyleTuple;
import com.google.common.base.Preconditions;
import com.google.common.primitives.UnsignedInteger;
import java.util.Optional;
import org.immutables.value.Value;
@Value.Immutable
@BuckStyleTuple
abstract class AbstractMachoHeader {
public static final int MACH_HEADER_SIZE_32 = 28;
public static final int MACH_HEADER_SIZE_64 = 32;
public static final UnsignedInteger MH_MAGIC = UnsignedInteger.fromIntBits(0xfeedface);
public static final UnsignedInteger MH_CIGAM = UnsignedInteger.fromIntBits(0xcefaedfe);
public static final UnsignedInteger MH_MAGIC_64 = UnsignedInteger.fromIntBits(0xfeedfacf);
public static final UnsignedInteger MH_CIGAM_64 = UnsignedInteger.fromIntBits(0xcffaedfe);
public abstract UnsignedInteger getMagic(); // 32 bit
public abstract Integer getCputype(); // 32 bit
public abstract Integer getCpusubtype(); // 32 bit
public abstract UnsignedInteger getFiletype(); // 32 bit
public abstract UnsignedInteger getNcmds(); // 32 bit
public abstract UnsignedInteger getSizeofcmds(); // 32 bit
public abstract UnsignedInteger getFlags(); // 32 bit
public abstract Optional<UnsignedInteger> getReserved(); // 32 bit, only present for 64 bit arch
@Value.Check
protected void check() {
Preconditions.checkArgument(getMagic().equals(MH_MAGIC) || getMagic().equals(MH_MAGIC_64));
if (getMagic().equals(MH_MAGIC)) {
Preconditions.checkArgument(!getReserved().isPresent());
} else {
Preconditions.checkArgument(getReserved().isPresent());
}
}
}