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Merge pull request #6499 from janvrany/pr/riscv-add-CPU-class
RISC-V: add CPU class
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/******************************************************************************* | ||
* Copyright (c) 2022, 2022 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 "env/CPU.hpp" | ||
#include "env/CompilerEnv.hpp" | ||
#include "env/jittypes.h" | ||
#include "omrport.h" | ||
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bool | ||
OMR::RV::CPU::isTargetWithinUnconditionalBranchImmediateRange(intptr_t targetAddress, intptr_t sourceAddress) | ||
{ | ||
intptr_t range = targetAddress - sourceAddress; | ||
return range <= self()->maxUnconditionalBranchImmediateForwardOffset() && | ||
range >= self()->maxUnconditionalBranchImmediateBackwardOffset(); | ||
} | ||
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bool | ||
OMR::RV::CPU::supportsFeature(uint32_t feature) | ||
{ | ||
if (TR::Compiler->omrPortLib == NULL) | ||
{ | ||
return false; | ||
} | ||
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OMRPORT_ACCESS_FROM_OMRPORT(TR::Compiler->omrPortLib); | ||
return (TRUE == omrsysinfo_processor_has_feature(&_processorDescription, feature)); | ||
} | ||
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const char* | ||
OMR::RV::CPU::getProcessorName() | ||
{ | ||
const char* returnString = ""; | ||
switch(_processorDescription.processor) | ||
{ | ||
case OMR_PROCESOR_RISCV64_UNKNOWN: | ||
returnString = "Unknown RV64G processor"; | ||
break; | ||
default: | ||
returnString = "Unknown RISC-V processor"; | ||
break; | ||
} | ||
return returnString; | ||
} |
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/******************************************************************************* | ||
* Copyright (c) 2022, 2022 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 OMR_RV_CPU_INCL | ||
#define OMR_RV_CPU_INCL | ||
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/* | ||
* The following #define and typedef must appear before any #includes in this file | ||
*/ | ||
#ifndef OMR_CPU_CONNECTOR | ||
#define OMR_CPU_CONNECTOR | ||
namespace OMR { namespace RV { class CPU; } } | ||
namespace OMR { typedef OMR::RV::CPU CPUConnector; } | ||
#else | ||
#error OMR::RV::CPU expected to be a primary connector, but an OMR connector is already defined | ||
#endif | ||
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#include <stdint.h> | ||
#include "compiler/env/OMRCPU.hpp" | ||
#include "env/jittypes.h" | ||
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namespace OMR | ||
{ | ||
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namespace RV | ||
{ | ||
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class OMR_EXTENSIBLE CPU : public OMR::CPU | ||
{ | ||
protected: | ||
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CPU() : OMR::CPU() | ||
{ | ||
_processorDescription.processor = OMR_PROCESOR_RISCV64_UNKNOWN; | ||
_processorDescription.physicalProcessor = OMR_PROCESOR_RISCV64_UNKNOWN; | ||
memset(_processorDescription.features, 0, OMRPORT_SYSINFO_FEATURES_SIZE*sizeof(uint32_t)); | ||
} | ||
CPU(const OMRProcessorDesc& processorDescription) : OMR::CPU(processorDescription) {} | ||
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public: | ||
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/** | ||
* @brief Answers whether the CPU has hardware support for SQRT or not | ||
* @return true if supported, false otherwise | ||
*/ | ||
bool getSupportsHardwareSQRT() { return false; } | ||
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/** | ||
* @brief Provides the maximum forward branch displacement in bytes reachable | ||
* with a relative unconditional branch with immediate (B or BL) instruction. | ||
* | ||
* @return Maximum forward branch displacement in bytes. | ||
*/ | ||
int32_t maxUnconditionalBranchImmediateForwardOffset() { return 0x7FFFF; } | ||
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/** | ||
* @brief Provides the maximum backward branch displacement in bytes reachable | ||
* with a relative unconditional branch with immediate (B or BL) instruction. | ||
* | ||
* @return Maximum backward branch displacement in bytes. | ||
*/ | ||
int32_t maxUnconditionalBranchImmediateBackwardOffset() { return 0xFFF80000; } | ||
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/** | ||
* @brief Answers whether the distance between a target and source address | ||
* is within the reachable displacement range for a relative unconditional | ||
* branch with immediate (B or BL) instruction. | ||
* | ||
* @param[in] : targetAddress : the address of the target | ||
* | ||
* @param[in] : sourceAddress : the address of the relative unconditional branch | ||
* with immediate (B or BL) instruction from which the | ||
* displacement range is measured. | ||
* | ||
* @return true if the target is within range; false otherwise. | ||
*/ | ||
bool isTargetWithinUnconditionalBranchImmediateRange(intptr_t targetAddress, intptr_t sourceAddress); | ||
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/** | ||
* @brief Determines whether 32bit integer rotate is available | ||
* | ||
* @details | ||
* Returns true if 32bit integer rotate to left is available when requireRotateToLeft is true. | ||
* Returns true if 32bit integer rotate (right or left) is available when requireRotateToLeft is false. | ||
* | ||
* @param requireRotateToLeft if true, returns true if rotate to left operation is available. | ||
*/ | ||
bool getSupportsHardware32bitRotate(bool requireRotateToLeft=false) { return false; } // no rotate in RV64G | ||
/** | ||
* @brief Determines whether 64bit integer rotate is available | ||
* | ||
* @details | ||
* Returns true if 64bit integer rotate to left is available when requireRotateToLeft is true. | ||
* Returns true if 64bit integer rotate (right or left) is available when requireRotateToLeft is false. | ||
* | ||
* @param requireRotateToLeft if true, returns true if rotate to left operation is available. | ||
*/ | ||
bool getSupportsHardware64bitRotate(bool requireRotateToLeft=false) { return false; } // no rotate in RV64G | ||
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/** | ||
* @brief Answers if the specified feature is supported by this cpu | ||
* | ||
* @param[in] feature: feature bit | ||
* @returns true if feature is supported | ||
*/ | ||
bool supportsFeature(uint32_t feature); | ||
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/** | ||
* @brief Returns name of the current processor | ||
* @returns const char* string representing the name of the current processor | ||
*/ | ||
const char* getProcessorName(); | ||
}; | ||
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} | ||
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} | ||
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#endif |