1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/shark/sharkMemoryManager.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,100 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2009 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
1.30 +#define SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
1.31 +
1.32 +#include "shark/llvmHeaders.hpp"
1.33 +#include "shark/sharkEntry.hpp"
1.34 +
1.35 +// SharkMemoryManager wraps the LLVM JIT Memory Manager. We could use
1.36 +// this to run our own memory allocation policies, but for now all we
1.37 +// use it for is figuring out where the resulting native code ended up.
1.38 +
1.39 +class SharkMemoryManager : public llvm::JITMemoryManager {
1.40 + public:
1.41 + SharkMemoryManager()
1.42 + : _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}
1.43 +
1.44 + private:
1.45 + llvm::JITMemoryManager* _mm;
1.46 +
1.47 + private:
1.48 + llvm::JITMemoryManager* mm() const {
1.49 + return _mm;
1.50 + }
1.51 +
1.52 + private:
1.53 + std::map<const llvm::Function*, SharkEntry*> _entry_map;
1.54 +
1.55 + public:
1.56 + void set_entry_for_function(const llvm::Function* function,
1.57 + SharkEntry* entry) {
1.58 + _entry_map[function] = entry;
1.59 + }
1.60 + SharkEntry* get_entry_for_function(const llvm::Function* function) {
1.61 + return _entry_map[function];
1.62 + }
1.63 +
1.64 + public:
1.65 + void AllocateGOT();
1.66 + unsigned char* getGOTBase() const;
1.67 + unsigned char* allocateStub(const llvm::GlobalValue* F,
1.68 + unsigned StubSize,
1.69 + unsigned Alignment);
1.70 + unsigned char* startFunctionBody(const llvm::Function* F,
1.71 + uintptr_t& ActualSize);
1.72 + void endFunctionBody(const llvm::Function* F,
1.73 + unsigned char* FunctionStart,
1.74 + unsigned char* FunctionEnd);
1.75 +
1.76 + void *getPointerToNamedFunction(const std::string &Name, bool AbortOnFailure = true);
1.77 + void setPoisonMemory(bool);
1.78 + uint8_t* allocateGlobal(uintptr_t, unsigned int);
1.79 + void setMemoryWritable();
1.80 + void setMemoryExecutable();
1.81 + void deallocateFunctionBody(void *ptr);
1.82 + unsigned char *allocateSpace(intptr_t Size,
1.83 + unsigned int Alignment);
1.84 +
1.85 +#if SHARK_LLVM_VERSION <= 32
1.86 +uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);
1.87 +uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);
1.88 +unsigned char* startExceptionTable(const llvm::Function* F,
1.89 + uintptr_t& ActualSize);
1.90 +void deallocateExceptionTable(void *ptr);
1.91 +void endExceptionTable(const llvm::Function* F,
1.92 + unsigned char* TableStart,
1.93 + unsigned char* TableEnd,
1.94 + unsigned char* FrameRegister);
1.95 +#else
1.96 +uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, llvm::StringRef SectionName);
1.97 +uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, llvm::StringRef SectionName, bool IsReadOnly);
1.98 +bool finalizeMemory(std::string *ErrMsg = 0);
1.99 +#endif
1.100 +
1.101 +};
1.102 +
1.103 +#endif // SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
