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package jdk.tools.jaotc;

import jdk.tools.jaotc.binformat.BinaryContainer;
import jdk.tools.jaotc.binformat.Relocation.RelocType;
import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage;

import jdk.vm.ci.code.site.Call;

This is a foreign call site. This means either a call to the VM or a call to a Graal stub. If it's a call directly to the VM, mangle the name. The call should go through regular .plt used by the system loader, at least for now. If it's a call to a Graal stub, it should always be a direct call, since the Graal stubs are contained within the .so file.
/** * This is a foreign call site. This means either a call to the VM or a call to a Graal stub. If * it's a call directly to the VM, mangle the name. The call should go through regular .plt used by * the system loader, at least for now. If it's a call to a Graal stub, it should always be a direct * call, since the Graal stubs are contained within the .so file. */
final class ForeignCallSiteRelocationInfo extends CallSiteRelocationInfo { ForeignCallSiteRelocationInfo(Call call, HotSpotForeignCallLinkage callTarget) { super(getTargetSymbol(call, callTarget), getRelocType(callTarget)); } private static String getTargetSymbol(Call call, HotSpotForeignCallLinkage callTarget) { // If it specifies a foreign call linkage, find the symbol corresponding to the address in // HotSpotVMConfig's fields. final long foreignCallTargetAddress = callTarget.getAddress(); // Get the C/C++ function name associated with the foreign call target address. String functionName = DataBuilder.getVMFunctionNameForAddress(foreignCallTargetAddress); if (functionName != null) { // Use the known global AOT symbol associated with function name, if one exists String aotSymbol = BinaryContainer.getAOTSymbolForVMFunctionName(functionName); if (aotSymbol == null) { throw new InternalError("no global symbol found for: " + functionName); } return aotSymbol; } // Is it a Graal stub we are calling? if (callTarget.isCompiledStub()) { assert call.direct : "Should always be a direct call to stubs"; return callTarget.getSymbol(); } throw new InternalError("no symbol found for: " + callTarget); } private static RelocType getRelocType(HotSpotForeignCallLinkage callTarget) { return callTarget.isCompiledStub() ? RelocType.STUB_CALL_DIRECT : RelocType.FOREIGN_CALL_INDIRECT_GOT; } }