Mercurial > hg > graal-jvmci-8
comparison src/cpu/zero/vm/javaFrameAnchor_zero.hpp @ 1010:354d3184f6b2
6890308: integrate zero assembler hotspot changes
Reviewed-by: never
Contributed-by: gbenson@redhat.com
author | never |
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date | Tue, 13 Oct 2009 12:04:21 -0700 |
parents | |
children | 0c5b3cf3c1f5 |
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1009:03b336640699 | 1010:354d3184f6b2 |
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1 /* | |
2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. | |
3 * Copyright 2007, 2008 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 * have any questions. | |
23 * | |
24 */ | |
25 | |
26 public: | |
27 // Each arch must define reset, save, restore | |
28 // These are used by objects that only care about: | |
29 // 1 - initializing a new state (thread creation, javaCalls) | |
30 // 2 - saving a current state (javaCalls) | |
31 // 3 - restoring an old state (javaCalls) | |
32 | |
33 void clear() { | |
34 // clearing _last_Java_sp must be first | |
35 _last_Java_sp = NULL; | |
36 // fence? | |
37 _last_Java_pc = NULL; | |
38 } | |
39 | |
40 void copy(JavaFrameAnchor* src) { | |
41 // In order to make sure the transition state is valid for "this" | |
42 // We must clear _last_Java_sp before copying the rest of the new | |
43 // data | |
44 // | |
45 // Hack Alert: Temporary bugfix for 4717480/4721647 To act like | |
46 // previous version (pd_cache_state) don't NULL _last_Java_sp | |
47 // unless the value is changing | |
48 // | |
49 if (_last_Java_sp != src->_last_Java_sp) | |
50 _last_Java_sp = NULL; | |
51 | |
52 _last_Java_pc = src->_last_Java_pc; | |
53 // Must be last so profiler will always see valid frame if | |
54 // has_last_frame() is true | |
55 _last_Java_sp = src->_last_Java_sp; | |
56 } | |
57 | |
58 bool walkable() { | |
59 return true; | |
60 } | |
61 | |
62 void make_walkable(JavaThread* thread) { | |
63 // nothing to do | |
64 } | |
65 | |
66 intptr_t* last_Java_sp() const { | |
67 return _last_Java_sp; | |
68 } | |
69 | |
70 void set_last_Java_sp(intptr_t* sp) { | |
71 _last_Java_sp = sp; | |
72 } |