| /* |
| * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| 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. |
| */ |
| 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; |
| } |
| |
| } |