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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
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*
* 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,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package jdk.tools.jaotc;
import jdk.tools.jaotc.binformat.BinaryContainer;
import jdk.tools.jaotc.binformat.ByteContainer;
import jdk.tools.jaotc.binformat.CodeContainer;
import jdk.tools.jaotc.binformat.Relocation;
import jdk.tools.jaotc.binformat.Relocation.RelocType;
import jdk.tools.jaotc.binformat.Symbol;
import jdk.tools.jaotc.binformat.Symbol.Binding;
import jdk.tools.jaotc.binformat.Symbol.Kind;
/**
* Describes a relocation symbol of a call site. That is, WHERE to do a relocation.
*/
abstract class CallSiteRelocationSymbol {
final Symbol symbol;
CallSiteRelocationSymbol(Symbol symbol) {
assert symbol != null;
this.symbol = symbol;
}
protected static Symbol createCodeContainerSymbol(BinaryContainer binaryContainer, String symbolName, int symbolOffset) {
return binaryContainer.getCodeContainer().createSymbol(symbolOffset, Kind.OBJECT, Binding.LOCAL, 0, symbolName);
}
protected static void addCodeContainerRelocation(BinaryContainer binaryContainer, String symbolName, int symbolOffset, int relocationOffset) {
Symbol symbol = createCodeContainerSymbol(binaryContainer, symbolName, symbolOffset);
addExternalGotToPltRelocation(binaryContainer, symbol, relocationOffset);
}
protected static void addExtLinkageGotContainerRelocation(BinaryContainer binaryContainer, String symbolName, int symbolOffset, int relocationOffset) {
ByteContainer container = binaryContainer.getExtLinkageGOTContainer();
Symbol symbol = container.createGotSymbol(symbolOffset, symbolName);
addExternalPltToGotRelocation(binaryContainer, symbol, relocationOffset);
}
/**
* Add an {@link RelocType#EXTERNAL_GOT_TO_PLT} relocation to the
* {@link BinaryContainer#getExtLinkageGOTContainer()}.
*/
private static void addExternalGotToPltRelocation(BinaryContainer binaryContainer, Symbol symbol, int relocationOffset) {
ByteContainer container = binaryContainer.getExtLinkageGOTContainer();
Relocation relocation = new Relocation(relocationOffset, RelocType.EXTERNAL_GOT_TO_PLT, 8, container, symbol);
binaryContainer.addRelocation(relocation);
}
/**
* Add an {@link RelocType#EXTERNAL_PLT_TO_GOT} relocation to the
* {@link BinaryContainer#getCodeContainer()}.
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