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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.
/** * 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()}. */ protected static void addExternalPltToGotRelocation(BinaryContainer binaryContainer, Symbol symbol, int relocationOffset) { CodeContainer container = binaryContainer.getCodeContainer(); Relocation relocation = new Relocation(relocationOffset, RelocType.EXTERNAL_PLT_TO_GOT, 8, container, symbol); binaryContainer.addRelocation(relocation); } }