Mercurial > hg > truffle
annotate src/share/vm/runtime/stubCodeGenerator.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | 126ea7725993 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 1997, 2000, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // All the basic framework for stubcode generation/debugging/printing. | |
| 26 | |
| 27 | |
| 28 // A StubCodeDesc describes a piece of generated code (usually stubs). | |
| 29 // This information is mainly useful for debugging and printing. | |
| 30 // Currently, code descriptors are simply chained in a linked list, | |
| 31 // this may have to change if searching becomes too slow. | |
| 32 | |
| 33 class StubCodeDesc: public CHeapObj { | |
| 34 protected: | |
| 35 static StubCodeDesc* _list; // the list of all descriptors | |
| 36 static int _count; // length of list | |
| 37 | |
| 38 StubCodeDesc* _next; // the next element in the linked list | |
| 39 const char* _group; // the group to which the stub code belongs | |
| 40 const char* _name; // the name assigned to the stub code | |
| 41 int _index; // serial number assigned to the stub | |
| 42 address _begin; // points to the first byte of the stub code (included) | |
| 43 address _end; // points to the first byte after the stub code (excluded) | |
| 44 | |
| 45 void set_end(address end) { | |
| 46 assert(_begin <= end, "begin & end not properly ordered"); | |
| 47 _end = end; | |
| 48 } | |
| 49 | |
| 50 void set_begin(address begin) { | |
| 51 assert(begin >= _begin, "begin may not decrease"); | |
| 52 assert(_end == NULL || begin <= _end, "begin & end not properly ordered"); | |
| 53 _begin = begin; | |
| 54 } | |
| 55 | |
| 56 friend class StubCodeMark; | |
| 57 friend class StubCodeGenerator; | |
| 58 | |
| 59 public: | |
| 60 static StubCodeDesc* desc_for(address pc); // returns the code descriptor for the code containing pc or NULL | |
| 61 static StubCodeDesc* desc_for_index(int); // returns the code descriptor for the index or NULL | |
| 62 static const char* name_for(address pc); // returns the name of the code containing pc or NULL | |
| 63 | |
| 64 StubCodeDesc(const char* group, const char* name, address begin) { | |
| 65 assert(name != NULL, "no name specified"); | |
| 66 _next = _list; | |
| 67 _group = group; | |
| 68 _name = name; | |
| 69 _index = ++_count; // (never zero) | |
| 70 _begin = begin; | |
| 71 _end = NULL; | |
| 72 _list = this; | |
| 73 }; | |
| 74 | |
| 75 const char* group() const { return _group; } | |
| 76 const char* name() const { return _name; } | |
| 77 int index() const { return _index; } | |
| 78 address begin() const { return _begin; } | |
| 79 address end() const { return _end; } | |
| 80 int size_in_bytes() const { return _end - _begin; } | |
| 81 bool contains(address pc) const { return _begin <= pc && pc < _end; } | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
82 void print_on(outputStream* st) const; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
83 void print() const { print_on(tty); } |
| 0 | 84 }; |
| 85 | |
| 86 // The base class for all stub-generating code generators. | |
| 87 // Provides utility functions. | |
| 88 | |
| 89 class StubCodeGenerator: public StackObj { | |
| 90 protected: | |
| 91 MacroAssembler* _masm; | |
| 92 | |
| 93 StubCodeDesc* _first_stub; | |
| 94 StubCodeDesc* _last_stub; | |
| 95 | |
| 96 public: | |
| 97 StubCodeGenerator(CodeBuffer* code); | |
| 98 ~StubCodeGenerator(); | |
| 99 | |
| 100 MacroAssembler* assembler() const { return _masm; } | |
| 101 | |
| 102 virtual void stub_prolog(StubCodeDesc* cdesc); // called by StubCodeMark constructor | |
| 103 virtual void stub_epilog(StubCodeDesc* cdesc); // called by StubCodeMark destructor | |
| 104 }; | |
| 105 | |
| 106 | |
| 107 // Stack-allocated helper class used to assciate a stub code with a name. | |
| 108 // All stub code generating functions that use a StubCodeMark will be registered | |
| 109 // in the global StubCodeDesc list and the generated stub code can be identified | |
| 110 // later via an address pointing into it. | |
| 111 | |
| 112 class StubCodeMark: public StackObj { | |
| 113 protected: | |
| 114 StubCodeGenerator* _cgen; | |
| 115 StubCodeDesc* _cdesc; | |
| 116 | |
| 117 public: | |
| 118 StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name); | |
| 119 ~StubCodeMark(); | |
| 120 | |
| 121 }; |