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comparison src/cpu/ppc/vm/javaFrameAnchor_ppc.hpp @ 14408:ec28f9c041ff

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8019972: PPC64 (part 9): platform files for interpreter only VM. Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs. Reviewed-by: kvn
author goetz
date Fri, 02 Aug 2013 16:46:45 +0200
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children 58cf34613a72
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14407:94c202aa2646 14408:ec28f9c041ff
1 /*
2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. All rights reserved.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef CPU_PPC_VM_JAVAFRAMEANCHOR_PPC_HPP
27 #define CPU_PPC_VM_JAVAFRAMEANCHOR_PPC_HPP
28
29 #ifndef CC_INTERP
30 #error "CC_INTERP must be defined on PPC64"
31 #endif
32
33 public:
34 // Each arch must define reset, save, restore
35 // These are used by objects that only care about:
36 // 1 - initializing a new state (thread creation, javaCalls)
37 // 2 - saving a current state (javaCalls)
38 // 3 - restoring an old state (javaCalls)
39
40 inline void clear(void) {
41 // clearing _last_Java_sp must be first
42 _last_Java_sp = NULL;
43 // fence?
44 OrderAccess::release();
45 _last_Java_pc = NULL;
46 }
47
48 inline void set(intptr_t* sp, address pc) {
49 _last_Java_pc = pc;
50 OrderAccess::release();
51 _last_Java_sp = sp;
52 }
53
54 void copy(JavaFrameAnchor* src) {
55 // In order to make sure the transition state is valid for "this".
56 // We must clear _last_Java_sp before copying the rest of the new data.
57 //
58 // Hack Alert: Temporary bugfix for 4717480/4721647
59 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp
60 // unless the value is changing.
61 if (_last_Java_sp != src->_last_Java_sp) {
62 _last_Java_sp = NULL;
63 OrderAccess::release();
64 }
65 _last_Java_pc = src->_last_Java_pc;
66 // Must be last so profiler will always see valid frame if has_last_frame() is true.
67 OrderAccess::release();
68 _last_Java_sp = src->_last_Java_sp;
69 }
70
71 // Always walkable.
72 bool walkable(void) { return true; }
73 // Never any thing to do since we are always walkable and can find address of return addresses.
74 void make_walkable(JavaThread* thread) { }
75
76 intptr_t* last_Java_sp(void) const { return _last_Java_sp; }
77
78 address last_Java_pc(void) { return _last_Java_pc; }
79
80 void set_last_Java_sp(intptr_t* sp) { OrderAccess::release(); _last_Java_sp = sp; }
81
82 #endif // CPU_PPC_VM_JAVAFRAMEANCHOR_PPC_HPP