Mercurial > hg > truffle
comparison src/share/vm/runtime/frame.inline.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 98cb887364d3 |
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1 /* | |
2 * Copyright 1997-2006 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 // This file holds platform-independant bodies of inline functions for frames. | |
26 | |
27 // Note: The bcx usually contains the bcp; however during GC it contains the bci | |
28 // (changed by gc_prologue() and gc_epilogue()) to be methodOop position | |
29 // independent. These accessors make sure the correct value is returned | |
30 // by testing the range of the bcx value. bcp's are guaranteed to be above | |
31 // max_method_code_size, since methods are always allocated in OldSpace and | |
32 // Eden is allocated before OldSpace. | |
33 // | |
34 // The bcp is accessed sometimes during GC for ArgumentDescriptors; than | |
35 // the correct translation has to be performed (was bug). | |
36 | |
37 inline bool frame::is_bci(intptr_t bcx) { | |
38 #ifdef _LP64 | |
39 return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ; | |
40 #else | |
41 return 0 <= bcx && bcx <= max_method_code_size; | |
42 #endif | |
43 } | |
44 | |
45 inline bool frame::is_entry_frame() const { | |
46 return StubRoutines::returns_to_call_stub(pc()); | |
47 } | |
48 | |
49 inline bool frame::is_first_frame() const { | |
50 return is_entry_frame() && entry_frame_is_first(); | |
51 } | |
52 | |
53 // here are the platform-dependent bodies: | |
54 | |
55 # include "incls/_frame_pd.inline.hpp.incl" |