Mercurial > hg > truffle
comparison src/share/vm/shark/sharkCodeBuffer.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 |
comparison
equal
deleted
inserted
replaced
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 class SharkCodeBuffer : public StackObj { | |
27 public: | |
28 SharkCodeBuffer(MacroAssembler* masm) | |
29 : _masm(masm), _base_pc(NULL) {} | |
30 | |
31 private: | |
32 MacroAssembler* _masm; | |
33 llvm::Value* _base_pc; | |
34 | |
35 private: | |
36 MacroAssembler* masm() const { | |
37 return _masm; | |
38 } | |
39 | |
40 public: | |
41 llvm::Value* base_pc() const { | |
42 return _base_pc; | |
43 } | |
44 void set_base_pc(llvm::Value* base_pc) { | |
45 assert(_base_pc == NULL, "only do this once"); | |
46 _base_pc = base_pc; | |
47 } | |
48 | |
49 // Allocate some space in the buffer and return its address. | |
50 // This buffer will have been relocated by the time the method | |
51 // is installed, so you can't inline the result in code. | |
52 public: | |
53 void* malloc(size_t size) const { | |
54 masm()->align(BytesPerWord); | |
55 void *result = masm()->pc(); | |
56 masm()->advance(size); | |
57 return result; | |
58 } | |
59 | |
60 // Create a unique offset in the buffer. | |
61 public: | |
62 int create_unique_offset() const { | |
63 int offset = masm()->offset(); | |
64 masm()->advance(1); | |
65 return offset; | |
66 } | |
67 | |
68 // Inline an oop into the buffer and return its offset. | |
69 public: | |
70 int inline_oop(jobject object) const { | |
71 masm()->align(BytesPerWord); | |
72 int offset = masm()->offset(); | |
73 masm()->store_oop(object); | |
74 return offset; | |
75 } | |
76 | |
77 // Inline a block of non-oop data into the buffer and return its offset. | |
78 public: | |
79 int inline_data(void *src, size_t size) const { | |
80 masm()->align(BytesPerWord); | |
81 int offset = masm()->offset(); | |
82 void *dst = masm()->pc(); | |
83 masm()->advance(size); | |
84 memcpy(dst, src, size); | |
85 return offset; | |
86 } | |
87 }; |