Mercurial > hg > truffle
view src/share/vm/shark/sharkMemoryManager.hpp @ 4974:ab906cea36f7
First round of minimizing diff vs OpenJDK.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 27 Feb 2012 15:15:59 +0100 |
parents | f95d63e2154a |
children | 2cd5e15048e6 |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2009 Red Hat, Inc. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP #define SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP #include "shark/llvmHeaders.hpp" #include "shark/sharkEntry.hpp" // SharkMemoryManager wraps the LLVM JIT Memory Manager. We could use // this to run our own memory allocation policies, but for now all we // use it for is figuring out where the resulting native code ended up. class SharkMemoryManager : public llvm::JITMemoryManager { public: SharkMemoryManager() : _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {} private: llvm::JITMemoryManager* _mm; private: llvm::JITMemoryManager* mm() const { return _mm; } private: std::map<const llvm::Function*, SharkEntry*> _entry_map; public: void set_entry_for_function(const llvm::Function* function, SharkEntry* entry) { _entry_map[function] = entry; } SharkEntry* get_entry_for_function(const llvm::Function* function) { return _entry_map[function]; } public: void AllocateGOT(); unsigned char* getGOTBase() const; unsigned char* allocateStub(const llvm::GlobalValue* F, unsigned StubSize, unsigned Alignment); unsigned char* startFunctionBody(const llvm::Function* F, uintptr_t& ActualSize); void endFunctionBody(const llvm::Function* F, unsigned char* FunctionStart, unsigned char* FunctionEnd); unsigned char* startExceptionTable(const llvm::Function* F, uintptr_t& ActualSize); void endExceptionTable(const llvm::Function* F, unsigned char* TableStart, unsigned char* TableEnd, unsigned char* FrameRegister); #if SHARK_LLVM_VERSION < 27 void* getDlsymTable() const; void SetDlsymTable(void *ptr); #endif void setPoisonMemory(bool); uint8_t* allocateGlobal(uintptr_t, unsigned int); void setMemoryWritable(); void setMemoryExecutable(); #if SHARK_LLVM_VERSION >= 27 void deallocateExceptionTable(void *ptr); void deallocateFunctionBody(void *ptr); #else void deallocateMemForFunction(const llvm::Function* F); #endif unsigned char *allocateSpace(intptr_t Size, unsigned int Alignment); }; #endif // SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP