Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileStream.cpp @ 17541:4aa6fa2864af
Merge
author | asaha |
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date | Thu, 23 Jan 2014 14:50:08 -0800 |
parents | 55fb97c4c58d |
children | 4ca6dc0799b6 bb239308be67 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classFileStream.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
0 | 28 |
29 void ClassFileStream::truncated_file_error(TRAPS) { | |
30 THROW_MSG(vmSymbols::java_lang_ClassFormatError(), "Truncated class file"); | |
31 } | |
32 | |
33 ClassFileStream::ClassFileStream(u1* buffer, int length, char* source) { | |
34 _buffer_start = buffer; | |
35 _buffer_end = buffer + length; | |
36 _current = buffer; | |
37 _source = source; | |
38 _need_verify = false; | |
39 } | |
40 | |
41 u1 ClassFileStream::get_u1(TRAPS) { | |
42 if (_need_verify) { | |
43 guarantee_more(1, CHECK_0); | |
44 } else { | |
45 assert(1 <= _buffer_end - _current, "buffer overflow"); | |
46 } | |
47 return *_current++; | |
48 } | |
49 | |
50 u2 ClassFileStream::get_u2(TRAPS) { | |
51 if (_need_verify) { | |
52 guarantee_more(2, CHECK_0); | |
53 } else { | |
54 assert(2 <= _buffer_end - _current, "buffer overflow"); | |
55 } | |
56 u1* tmp = _current; | |
57 _current += 2; | |
58 return Bytes::get_Java_u2(tmp); | |
59 } | |
60 | |
61 u4 ClassFileStream::get_u4(TRAPS) { | |
62 if (_need_verify) { | |
63 guarantee_more(4, CHECK_0); | |
64 } else { | |
65 assert(4 <= _buffer_end - _current, "buffer overflow"); | |
66 } | |
67 u1* tmp = _current; | |
68 _current += 4; | |
69 return Bytes::get_Java_u4(tmp); | |
70 } | |
71 | |
72 u8 ClassFileStream::get_u8(TRAPS) { | |
73 if (_need_verify) { | |
74 guarantee_more(8, CHECK_0); | |
75 } else { | |
76 assert(8 <= _buffer_end - _current, "buffer overflow"); | |
77 } | |
78 u1* tmp = _current; | |
79 _current += 8; | |
80 return Bytes::get_Java_u8(tmp); | |
81 } | |
82 | |
83 void ClassFileStream::skip_u1(int length, TRAPS) { | |
84 if (_need_verify) { | |
85 guarantee_more(length, CHECK); | |
86 } | |
87 _current += length; | |
88 } | |
89 | |
90 void ClassFileStream::skip_u2(int length, TRAPS) { | |
91 if (_need_verify) { | |
92 guarantee_more(length * 2, CHECK); | |
93 } | |
94 _current += length * 2; | |
95 } | |
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96 |
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97 void ClassFileStream::skip_u4(int length, TRAPS) { |
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98 if (_need_verify) { |
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99 guarantee_more(length * 4, CHECK); |
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100 } |
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101 _current += length * 4; |
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102 } |