/*
* 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.
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*/
#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