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OMRJitCodeRXObjectFormat.cpp
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OMRJitCodeRXObjectFormat.cpp
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/*******************************************************************************
* Copyright (c) 2021, 2021 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at http://eclipse.org/legal/epl-2.0
* or the Apache License, Version 2.0 which accompanies this distribution
* and is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception [1] and GNU General Public
* License, version 2 with the OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#include "codegen/CodeGenerator.hpp"
#include "codegen/MemoryReference.hpp"
#include "il/MethodSymbol.hpp"
#include "il/SymbolReference.hpp"
#include "il/StaticSymbol.hpp"
#include "infra/Assert.hpp"
#include "objectfmt/FunctionCallData.hpp"
#include "objectfmt/JitCodeRXObjectFormat.hpp"
#include "runtime/CodeCache.hpp"
#include "runtime/CodeCacheManager.hpp"
#include "runtime/Runtime.hpp"
#include "z/codegen/S390GenerateInstructions.hpp"
TR::Instruction *
OMR::Z::JitCodeRXObjectFormat::emitFunctionCall(TR::FunctionCallData &data)
{
TR::SymbolReference *callSymRef = data.methodSymRef;
TR::CodeGenerator *cg = data.cg;
TR::Node *callNode = data.callNode;
if (callSymRef == NULL)
{
TR_ASSERT_FATAL_WITH_NODE(callNode, data.runtimeHelperIndex > 0, "GlobalFunctionCallData does not contain symbol reference for call or valid TR_RuntimeHelper.");
callSymRef = cg->symRefTab()->findOrCreateRuntimeHelper(data.runtimeHelperIndex, false, false, false);
}
uintptr_t targetAddress = data.targetAddress ? data.targetAddress : reinterpret_cast<uintptr_t>(callSymRef->getMethodAddress());
TR_ASSERT_FATAL_WITH_NODE(callNode, targetAddress != NULL, "Unable to make a call as targetAddress for the Call is not found.");
ccGlobalFunctionData *ccGlobalFunctionDataAddress = reinterpret_cast<ccGlobalFunctionData *>(cg->allocateCodeMemory(sizeof(ccGlobalFunctionData), false));
if (ccGlobalFunctionDataAddress == NULL)
{
cg->comp()->failCompilation<TR::CompilationException>("Could not allocate global function data");
}
TR_ASSERT_FATAL_WITH_NODE(callNode, cg->canUseRelativeLongInstructions(reinterpret_cast<int64_t>(ccGlobalFunctionDataAddress)), "ccGlobalFunctionDataAddress is outside relative immediate range.");
ccGlobalFunctionDataAddress->address = targetAddress;
TR::StaticSymbol *globalFunctionDataSymbol =
TR::StaticSymbol::createWithAddress(cg->trHeapMemory(), TR::Address, reinterpret_cast<void *>(ccGlobalFunctionDataAddress));
globalFunctionDataSymbol->setNotDataAddress();
TR_ASSERT_FATAL_WITH_NODE(callNode, data.returnAddressReg != NULL, "returnAddressReg should be set to make a call.");
if (data.entryPointReg == NULL)
data.entryPointReg = data.returnAddressReg;
data.out_loadInstr = generateRILInstruction(cg, TR::InstOpCode::LGRL, callNode, data.entryPointReg, reinterpret_cast<void *>(ccGlobalFunctionDataAddress), data.prevInstr);
data.out_callInstr = generateRRInstruction(cg, TR::InstOpCode::BASR, callNode, data.returnAddressReg, data.entryPointReg, data.out_loadInstr);
if (data.regDeps != NULL)
{
data.out_callInstr->setDependencyConditions(data.regDeps);
}
return data.out_callInstr;
}
uint8_t *
OMR::Z::JitCodeRXObjectFormat::encodeFunctionCall(TR::FunctionCallData &data)
{
TR::SymbolReference *callSymRef = data.methodSymRef;
TR::CodeGenerator *cg = data.cg;
TR::Node *callNode = data.callNode;
if (callSymRef == NULL)
{
TR_ASSERT_FATAL_WITH_NODE(callNode, data.runtimeHelperIndex > 0, "GlobalFunctionCallData does not contain symbol reference for call or valid TR_RuntimeHelper");
callSymRef = cg->symRefTab()->findOrCreateRuntimeHelper(data.runtimeHelperIndex, false, false, false);
}
uintptr_t targetAddress = data.targetAddress != NULL ? data.targetAddress : reinterpret_cast<uintptr_t>(callSymRef->getMethodAddress());
uint8_t *cursor = data.bufferAddress;
TR_ASSERT_FATAL_WITH_NODE(callNode, targetAddress != NULL, "Unable to make a call as targetAddress for the Call is not found.");
ccGlobalFunctionData *ccGlobalFunctionDataAddress = reinterpret_cast<ccGlobalFunctionData *>(cg->allocateCodeMemory(sizeof(ccGlobalFunctionData), false));
if (ccGlobalFunctionDataAddress == NULL)
{
cg->comp()->failCompilation<TR::CompilationException>("Could not allocate global function data");
}
TR_ASSERT_FATAL_WITH_NODE(callNode, cg->canUseRelativeLongInstructions(reinterpret_cast<int64_t>(ccGlobalFunctionDataAddress)), "ccGlobalFunctionDataAddress is outside relative immediate range.");
ccGlobalFunctionDataAddress->address = targetAddress;
// LGRL R14,<displacementForMemoryReferencePointingToCCGlobalFunctionCallData>
// BASR R14,R14
*reinterpret_cast<int16_t *>(cursor) = 0xC4E8;
cursor += sizeof(int16_t);
*reinterpret_cast<int32_t *>(cursor) = static_cast<int32_t>((reinterpret_cast<intptr_t>(ccGlobalFunctionDataAddress) - (intptr_t)cursor + 2) / 2);
cursor += sizeof(int32_t);
*reinterpret_cast<int16_t *>(cursor) = 0x0DEE;
cursor += sizeof(int16_t);
data.bufferAddress = cursor;
return data.bufferAddress;
}
uint8_t *
OMR::Z::JitCodeRXObjectFormat::printEncodedFunctionCall(TR::FILE *pOutFile, TR::FunctionCallData &data)
{
uint8_t *bufferPos = data.bufferAddress;
TR_Debug *debug = data.cg->getDebug();
uintptr_t ccFunctionCallDataAddress = static_cast<uintptr_t>(*(reinterpret_cast<int32_t*>(bufferPos + sizeof(int16_t))) * 2) + reinterpret_cast<uintptr_t>(bufferPos);
debug->printPrefix(pOutFile, NULL, bufferPos, 6);
trfprintf(pOutFile, "LGRL \tGPR14, <%p>\t# Target Address = <%p>.",
ccFunctionCallDataAddress, *reinterpret_cast<uint8_t *>(ccFunctionCallDataAddress));
bufferPos += 6;
debug->printPrefix(pOutFile, NULL, bufferPos, 2);
trfprintf(pOutFile, "BASR \tGPR_14, GPR14");
bufferPos += 2;
return bufferPos;
}