1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef sw_LLVMRoutineManager_hpp 16 #define sw_LLVMRoutineManager_hpp 17 18 #include "llvm/GlobalValue.h" 19 #include "llvm/ExecutionEngine/JITMemoryManager.h" 20 21 namespace sw 22 { 23 class LLVMRoutine; 24 25 class LLVMRoutineManager : public llvm::JITMemoryManager 26 { 27 public: 28 LLVMRoutineManager(); 29 30 virtual ~LLVMRoutineManager(); 31 32 virtual void AllocateGOT(); 33 34 virtual uint8_t *allocateStub(const llvm::GlobalValue *function, unsigned stubSize, unsigned alignment); 35 virtual uint8_t *startFunctionBody(const llvm::Function *function, uintptr_t &actualSize); 36 virtual void endFunctionBody(const llvm::Function *function, uint8_t *functionStart, uint8_t *functionEnd); 37 virtual uint8_t *startExceptionTable(const llvm::Function *function, uintptr_t &ActualSize); 38 virtual void endExceptionTable(const llvm::Function *function, uint8_t *tableStart, uint8_t *tableEnd, uint8_t *frameRegister); 39 virtual uint8_t *getGOTBase() const; 40 virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment); 41 virtual uint8_t *allocateGlobal(uintptr_t Size, unsigned int Alignment); 42 virtual void deallocateFunctionBody(void *Body); 43 virtual void deallocateExceptionTable(void *ET); 44 virtual void setMemoryWritable(); 45 virtual void setMemoryExecutable(); 46 virtual void setPoisonMemory(bool poison); 47 48 LLVMRoutine *acquireRoutine(void *entry); 49 50 private: 51 LLVMRoutine *routine; 52 53 static volatile int averageInstructionSize; 54 }; 55 } 56 57 #endif // sw_LLVMRoutineManager_hpp 58
