Mercurial > hg > truffle
diff src/share/vm/shark/sharkMemoryManager.hpp @ 1692:d2ede61b7a12
6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
---|---|
date | Wed, 11 Aug 2010 05:51:21 -0700 |
parents | |
children | f95d63e2154a |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/shark/sharkMemoryManager.hpp Wed Aug 11 05:51:21 2010 -0700 @@ -0,0 +1,88 @@ +/* + * Copyright (c) 1999, 2007, 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. + * + */ + +// 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); +};