Mercurial > hg > truffle
annotate src/cpu/zero/vm/javaFrameAnchor_zero.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 13b87063b4d8 |
| children |
| rev | line source |
|---|---|
| 1010 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 1505 | 3 * Copyright 2007, 2008, 2010 Red Hat, Inc. |
| 1010 | 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 * | |
|
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
| 1010 | 23 * |
| 24 */ | |
| 25 | |
| 1972 | 26 #ifndef CPU_ZERO_VM_JAVAFRAMEANCHOR_ZERO_HPP |
| 27 #define CPU_ZERO_VM_JAVAFRAMEANCHOR_ZERO_HPP | |
| 28 | |
| 1505 | 29 private: |
| 30 ZeroFrame* volatile _last_Java_fp; | |
| 31 | |
| 1010 | 32 public: |
| 33 // Each arch must define reset, save, restore | |
| 34 // These are used by objects that only care about: | |
| 35 // 1 - initializing a new state (thread creation, javaCalls) | |
| 36 // 2 - saving a current state (javaCalls) | |
| 37 // 3 - restoring an old state (javaCalls) | |
| 1505 | 38 // Note that whenever _last_Java_sp != NULL other anchor fields |
| 39 // must be valid. The profiler apparently depends on this. | |
| 1010 | 40 |
| 41 void clear() { | |
| 42 // clearing _last_Java_sp must be first | |
| 43 _last_Java_sp = NULL; | |
| 44 // fence? | |
| 1505 | 45 _last_Java_fp = NULL; |
| 1010 | 46 _last_Java_pc = NULL; |
| 47 } | |
| 48 | |
| 49 void copy(JavaFrameAnchor* src) { | |
| 1505 | 50 set(src->_last_Java_sp, src->_last_Java_pc, src->_last_Java_fp); |
| 51 } | |
| 52 | |
| 53 void set(intptr_t* sp, address pc, ZeroFrame* fp) { | |
| 1010 | 54 // In order to make sure the transition state is valid for "this" |
| 55 // We must clear _last_Java_sp before copying the rest of the new | |
| 56 // data | |
| 57 // | |
| 58 // Hack Alert: Temporary bugfix for 4717480/4721647 To act like | |
| 59 // previous version (pd_cache_state) don't NULL _last_Java_sp | |
| 60 // unless the value is changing | |
| 61 // | |
| 1505 | 62 if (_last_Java_sp != sp) |
| 1010 | 63 _last_Java_sp = NULL; |
| 64 | |
| 1505 | 65 _last_Java_fp = fp; |
| 66 _last_Java_pc = pc; | |
| 1010 | 67 // Must be last so profiler will always see valid frame if |
| 68 // has_last_frame() is true | |
| 1505 | 69 _last_Java_sp = sp; |
| 1010 | 70 } |
| 71 | |
| 72 bool walkable() { | |
| 73 return true; | |
| 74 } | |
| 75 | |
| 76 void make_walkable(JavaThread* thread) { | |
| 77 // nothing to do | |
| 78 } | |
| 79 | |
| 80 intptr_t* last_Java_sp() const { | |
| 81 return _last_Java_sp; | |
| 82 } | |
| 83 | |
| 1505 | 84 ZeroFrame* last_Java_fp() const { |
| 85 return _last_Java_fp; | |
| 1010 | 86 } |
| 1512 | 87 |
| 1729 | 88 address last_Java_pc() const { |
| 89 return _last_Java_pc; | |
| 90 } | |
| 91 | |
| 1512 | 92 static ByteSize last_Java_fp_offset() { |
| 93 return byte_offset_of(JavaFrameAnchor, _last_Java_fp); | |
| 94 } | |
| 1972 | 95 |
| 96 #endif // CPU_ZERO_VM_JAVAFRAMEANCHOR_ZERO_HPP |