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comparison src/share/vm/shark/sharkMemoryManager.hpp @ 1692:d2ede61b7a12

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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
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1691:4a665be40fd3 1692:d2ede61b7a12
1 /*
2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2009 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 // SharkMemoryManager wraps the LLVM JIT Memory Manager. We could use
27 // this to run our own memory allocation policies, but for now all we
28 // use it for is figuring out where the resulting native code ended up.
29
30 class SharkMemoryManager : public llvm::JITMemoryManager {
31 public:
32 SharkMemoryManager()
33 : _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}
34
35 private:
36 llvm::JITMemoryManager* _mm;
37
38 private:
39 llvm::JITMemoryManager* mm() const {
40 return _mm;
41 }
42
43 private:
44 std::map<const llvm::Function*, SharkEntry*> _entry_map;
45
46 public:
47 void set_entry_for_function(const llvm::Function* function,
48 SharkEntry* entry) {
49 _entry_map[function] = entry;
50 }
51 SharkEntry* get_entry_for_function(const llvm::Function* function) {
52 return _entry_map[function];
53 }
54
55 public:
56 void AllocateGOT();
57 unsigned char* getGOTBase() const;
58 unsigned char* allocateStub(const llvm::GlobalValue* F,
59 unsigned StubSize,
60 unsigned Alignment);
61 unsigned char* startFunctionBody(const llvm::Function* F,
62 uintptr_t& ActualSize);
63 void endFunctionBody(const llvm::Function* F,
64 unsigned char* FunctionStart,
65 unsigned char* FunctionEnd);
66 unsigned char* startExceptionTable(const llvm::Function* F,
67 uintptr_t& ActualSize);
68 void endExceptionTable(const llvm::Function* F,
69 unsigned char* TableStart,
70 unsigned char* TableEnd,
71 unsigned char* FrameRegister);
72 #if SHARK_LLVM_VERSION < 27
73 void* getDlsymTable() const;
74 void SetDlsymTable(void *ptr);
75 #endif
76 void setPoisonMemory(bool);
77 uint8_t* allocateGlobal(uintptr_t, unsigned int);
78 void setMemoryWritable();
79 void setMemoryExecutable();
80 #if SHARK_LLVM_VERSION >= 27
81 void deallocateExceptionTable(void *ptr);
82 void deallocateFunctionBody(void *ptr);
83 #else
84 void deallocateMemForFunction(const llvm::Function* F);
85 #endif
86 unsigned char *allocateSpace(intptr_t Size,
87 unsigned int Alignment);
88 };