|
0
|
1 /*
|
|
|
2 * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
|
|
|
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 *
|
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
|
21 * have any questions.
|
|
|
22 *
|
|
|
23 */
|
|
|
24
|
|
|
25 // PcDescs map a physical PC (given as offset from start of nmethod) to
|
|
|
26 // the corresponding source scope and byte code index.
|
|
|
27
|
|
|
28 class nmethod;
|
|
|
29
|
|
|
30 class PcDesc VALUE_OBJ_CLASS_SPEC {
|
|
|
31 friend class VMStructs;
|
|
|
32 private:
|
|
|
33 int _pc_offset; // offset from start of nmethod
|
|
|
34 int _scope_decode_offset; // offset for scope in nmethod
|
|
|
35 int _obj_decode_offset;
|
|
|
36
|
|
|
37 public:
|
|
|
38 int pc_offset() const { return _pc_offset; }
|
|
|
39 int scope_decode_offset() const { return _scope_decode_offset; }
|
|
|
40 int obj_decode_offset() const { return _obj_decode_offset; }
|
|
|
41
|
|
|
42 void set_pc_offset(int x) { _pc_offset = x; }
|
|
|
43 void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
|
|
|
44 void set_obj_decode_offset(int x) { _obj_decode_offset = x; }
|
|
|
45
|
|
|
46 // Constructor (only used for static in nmethod.cpp)
|
|
|
47 // Also used by ScopeDesc::sender()]
|
|
|
48 PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
|
|
|
49
|
|
|
50 enum {
|
|
|
51 // upper and lower exclusive limits real offsets:
|
|
|
52 lower_offset_limit = -1,
|
|
|
53 upper_offset_limit = (unsigned int)-1 >> 1
|
|
|
54 };
|
|
|
55
|
|
|
56 // Returns the real pc
|
|
|
57 address real_pc(const nmethod* code) const;
|
|
|
58
|
|
|
59 void print(nmethod* code);
|
|
|
60 bool verify(nmethod* code);
|
|
|
61 };
|
