101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
/*
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* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2009 Red Hat, Inc.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
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#define SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
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#include "shark/llvmHeaders.hpp"
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#include "shark/sharkEntry.hpp"
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// SharkMemoryManager wraps the LLVM JIT Memory Manager. We could use
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// this to run our own memory allocation policies, but for now all we
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// use it for is figuring out where the resulting native code ended up.
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class SharkMemoryManager : public llvm::JITMemoryManager {
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public:
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SharkMemoryManager()
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: _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}
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private:
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llvm::JITMemoryManager* _mm;
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private:
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llvm::JITMemoryManager* mm() const {
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return _mm;
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}
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private:
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std::map<const llvm::Function*, SharkEntry*> _entry_map;
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public:
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void set_entry_for_function(const llvm::Function* function,
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SharkEntry* entry) {
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_entry_map[function] = entry;
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}
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SharkEntry* get_entry_for_function(const llvm::Function* function) {
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return _entry_map[function];
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}
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public:
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void AllocateGOT();
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unsigned char* getGOTBase() const;
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unsigned char* allocateStub(const llvm::GlobalValue* F,
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unsigned StubSize,
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unsigned Alignment);
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unsigned char* startFunctionBody(const llvm::Function* F,
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uintptr_t& ActualSize);
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void endFunctionBody(const llvm::Function* F,
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unsigned char* FunctionStart,
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unsigned char* FunctionEnd);
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void *getPointerToNamedFunction(const std::string &Name, bool AbortOnFailure = true);
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void setPoisonMemory(bool);
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uint8_t* allocateGlobal(uintptr_t, unsigned int);
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void setMemoryWritable();
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void setMemoryExecutable();
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void deallocateFunctionBody(void *ptr);
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unsigned char *allocateSpace(intptr_t Size,
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unsigned int Alignment);
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#if SHARK_LLVM_VERSION <= 32
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uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);
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uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);
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unsigned char* startExceptionTable(const llvm::Function* F,
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uintptr_t& ActualSize);
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void deallocateExceptionTable(void *ptr);
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void endExceptionTable(const llvm::Function* F,
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unsigned char* TableStart,
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unsigned char* TableEnd,
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unsigned char* FrameRegister);
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#else
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uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, llvm::StringRef SectionName);
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uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, llvm::StringRef SectionName, bool IsReadOnly);
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bool finalizeMemory(std::string *ErrMsg = 0);
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#endif
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};
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#endif // SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
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