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RISC-V: implement helper call snippet
Signed-off-by: Jan Vrany <jan.vrany@fit.cvut.cz>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| /******************************************************************************* | ||
| * 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 | ||
| *******************************************************************************/ | ||
|
|
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| #include "codegen/RVHelperCallSnippet.hpp" | ||
| #include "codegen/RVInstruction.hpp" | ||
| #include "codegen/CodeGenerator.hpp" | ||
| #include "codegen/Relocation.hpp" | ||
| #include "codegen/SnippetGCMap.hpp" | ||
| #include "runtime/CodeCacheManager.hpp" | ||
|
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| uint8_t * | ||
| TR::RVHelperCallSnippet::emitSnippetBody() | ||
| { | ||
| uint8_t *cursor = cg()->getBinaryBufferCursor(); | ||
| intptr_t distance = (intptr_t)(getDestination()->getSymbol()->castToMethodSymbol()->getMethodAddress()) - (intptr_t)cursor; | ||
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| getSnippetLabel()->setCodeLocation(cursor); | ||
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| if (!VALID_UJTYPE_IMM(distance)) | ||
| { | ||
| distance = TR::CodeCacheManager::instance()->findHelperTrampoline(getDestination()->getReferenceNumber(), (void *)cursor) - (intptr_t)cursor; | ||
| TR_ASSERT_FATAL(VALID_UJTYPE_IMM(distance), "Trampoline too far away."); | ||
| } | ||
|
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| *(int32_t *)cursor = TR_RISCV_UJTYPE(TR::InstOpCode::_jal, cg()->machine()->getRealRegister(OMR::RealRegister::ra) , distance); | ||
|
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| cg()->addExternalRelocation(new (cg()->trHeapMemory()) TR::ExternalRelocation( | ||
| cursor, | ||
| (uint8_t *)getDestination(), | ||
| TR_HelperAddress, cg()), __FILE__, __LINE__, getNode()); | ||
| cursor += RISCV_INSTRUCTION_LENGTH; | ||
|
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| gcMap().registerStackMap(cursor, cg()); | ||
|
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| if (_restartLabel != NULL) | ||
| { | ||
| distance = (intptr_t)(_restartLabel->getCodeLocation()) - (intptr_t)cursor; | ||
| if (VALID_UJTYPE_IMM(distance)) | ||
| { | ||
| // b distance | ||
| *(int32_t *)cursor = TR_RISCV_UJTYPE(TR::InstOpCode::_jal, cg()->machine()->getRealRegister(OMR::RealRegister::zero), distance >> 2); | ||
| cursor += RISCV_INSTRUCTION_LENGTH; | ||
| } | ||
| else | ||
| { | ||
| TR_ASSERT_FATAL(false, "Target too far away. Not supported yet"); | ||
| } | ||
| } | ||
|
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| return cursor; | ||
| } | ||
|
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| void | ||
| TR_Debug::print(TR::FILE *pOutFile, TR::RVHelperCallSnippet * snippet) | ||
| { | ||
| uint8_t *bufferPos = snippet->getSnippetLabel()->getCodeLocation(); | ||
| auto restartLabel = snippet->getRestartLabel(); | ||
|
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| printSnippetLabel(pOutFile, snippet->getSnippetLabel(), bufferPos, getName(snippet)); | ||
|
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| char *info = ""; | ||
| intptr_t target = (intptr_t)(snippet->getDestination()->getSymbol()->castToMethodSymbol()->getMethodAddress()) ; | ||
| int32_t distance; | ||
| if (isBranchToTrampoline(snippet->getDestination(), bufferPos, distance)) | ||
| { | ||
| target = (intptr_t)distance + (intptr_t)bufferPos; | ||
| info = " Through trampoline"; | ||
| TR_ASSERT_FATAL(VALID_UJTYPE_IMM(distance), "Trampoline too far away."); | ||
| } | ||
|
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| printPrefix(pOutFile, NULL, bufferPos, 4); | ||
| trfprintf(pOutFile, "jal \tra, " POINTER_PRINTF_FORMAT "\t\t; %s%s", | ||
| target, getName(snippet->getDestination()), info); | ||
|
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| if (restartLabel != NULL) | ||
| { | ||
| bufferPos += RISCV_INSTRUCTION_LENGTH; | ||
| intptr_t restartLocation = (intptr_t)restartLabel->getCodeLocation(); | ||
| if (VALID_UJTYPE_IMM((intptr_t)restartLocation - (intptr_t)bufferPos)) | ||
| { | ||
| printPrefix(pOutFile, NULL, bufferPos, 4); | ||
| trfprintf(pOutFile, "jal \tzero, " POINTER_PRINTF_FORMAT "\t\t; Back to ", restartLocation); | ||
| print(pOutFile, restartLabel); | ||
| } | ||
| else | ||
| { | ||
| TR_ASSERT_FATAL(false, "Target too far away. Not supported yet"); | ||
| } | ||
| } | ||
| } | ||
|
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| uint32_t | ||
| TR::RVHelperCallSnippet::getLength(int32_t estimatedSnippetStart) | ||
| { | ||
| return ((_restartLabel == NULL) ? 1 : 2) * RISCV_INSTRUCTION_LENGTH; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /******************************************************************************* | ||
| * 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 | ||
| *******************************************************************************/ | ||
|
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| #ifndef RVHELPERCALLSNIPPET_INCL | ||
| #define RVHELPERCALLSNIPPET_INCL | ||
|
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| #include "codegen/Snippet.hpp" | ||
|
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| #include <stdint.h> | ||
| #include "il/SymbolReference.hpp" | ||
|
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| namespace TR { class CodeGenerator; } | ||
| namespace TR { class LabelSymbol; } | ||
| namespace TR { class Node; } | ||
|
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| namespace TR { | ||
|
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| class RVHelperCallSnippet : public TR::Snippet | ||
| { | ||
| TR::SymbolReference *_destination; | ||
| TR::LabelSymbol *_restartLabel; | ||
|
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| public: | ||
|
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| /** | ||
| * @brief Constructor | ||
| */ | ||
| RVHelperCallSnippet(TR::CodeGenerator *cg, | ||
| TR::Node *node, | ||
| TR::LabelSymbol *snippetlab, | ||
| TR::SymbolReference *helper, | ||
| TR::LabelSymbol *restartLabel=NULL) | ||
| : TR::Snippet(cg, node, snippetlab, helper->canCauseGC()), | ||
| _destination(helper), | ||
| _restartLabel(restartLabel) | ||
| { | ||
| } | ||
|
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| /** | ||
| * @brief Answers the Snippet kind | ||
| * @return Snippet kind | ||
| */ | ||
| virtual Kind getKind() { return IsHelperCall; } | ||
|
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| /** | ||
| * @brief Answers the destination | ||
| * @return destination | ||
| */ | ||
| TR::SymbolReference *getDestination() { return _destination; } | ||
| /** | ||
| * @brief Sets the destination | ||
| * @return destination | ||
| */ | ||
| TR::SymbolReference *setDestination(TR::SymbolReference *s) { return (_destination = s); } | ||
|
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| /** | ||
| * @brief Answers the restart label | ||
| * @return restart label | ||
| */ | ||
| TR::LabelSymbol *getRestartLabel() { return _restartLabel; } | ||
| /** | ||
| * @brief Sets the restart label | ||
| * @return restart label | ||
| */ | ||
| TR::LabelSymbol *setRestartLabel(TR::LabelSymbol *l) { return (_restartLabel=l); } | ||
|
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| /** | ||
| * @brief Emits the Snippet body | ||
| * @return instruction cursor | ||
| */ | ||
| virtual uint8_t *emitSnippetBody(); | ||
|
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| /** | ||
| * @brief Answers the Snippet length | ||
| * @return Snippet length | ||
| */ | ||
| virtual uint32_t getLength(int32_t estimatedSnippetStart); | ||
| }; | ||
|
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| } | ||
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| #endif |