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package jdk.tools.jaotc;
import jdk.tools.jaotc.binformat.BinaryContainer;
import jdk.tools.jaotc.binformat.Symbol;
import jdk.vm.ci.code.site.Call;
final class ForeignGotCallSiteRelocationSymbol extends CallSiteRelocationSymbol {
ForeignGotCallSiteRelocationSymbol(CompiledMethodInfo mi, Call call, CallSiteRelocationInfo callSiteRelocation, DataBuilder dataBuilder) {
super(createPltSymbol(dataBuilder, mi, call, callSiteRelocation));
}
private static Symbol createPltSymbol(DataBuilder dataBuilder, CompiledMethodInfo mi, Call call, CallSiteRelocationInfo callSiteRelocation) {
BinaryContainer binaryContainer = dataBuilder.getBinaryContainer();
String vmSymbolName = callSiteRelocation.targetSymbol;
// Add relocation to GOT cell for call resolution jump.
String pltSymbolName = "plt." + vmSymbolName;
Symbol pltSymbol = binaryContainer.getSymbol(pltSymbolName);
if (pltSymbol == null) {
String gotSymbolName = "got." + vmSymbolName;
Symbol gotSymbol = binaryContainer.getGotSymbol(gotSymbolName);
assert gotSymbol != null : "undefined VM got symbol '" + gotSymbolName + "' for call at " + call.pcOffset + " in " + mi.getMethodInfo().getSymbolName();
// Generate PLT jump (do it only once).
final int pltStartOffset = binaryContainer.getCodeContainer().getByteStreamSize();
final int pltEndOffset = pltStartOffset + addPltJump(dataBuilder);
// Link GOT cell to PLT jump.
pltSymbol = createCodeContainerSymbol(binaryContainer, pltSymbolName, pltStartOffset);
addExternalPltToGotRelocation(binaryContainer, gotSymbol, pltEndOffset);
}
return pltSymbol;
}
private static int addPltJump(DataBuilder dataBuilder) {
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