Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/javaFrameAnchor_x86.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | 126ea7725993 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 private: | |
| 26 | |
| 27 // FP value associated with _last_Java_sp: | |
| 28 intptr_t* volatile _last_Java_fp; // pointer is volatile not what it points to | |
| 29 | |
| 30 public: | |
| 31 // Each arch must define reset, save, restore | |
| 32 // These are used by objects that only care about: | |
| 33 // 1 - initializing a new state (thread creation, javaCalls) | |
| 34 // 2 - saving a current state (javaCalls) | |
| 35 // 3 - restoring an old state (javaCalls) | |
| 36 | |
| 37 void clear(void) { | |
| 38 // clearing _last_Java_sp must be first | |
| 39 _last_Java_sp = NULL; | |
| 40 // fence? | |
| 41 _last_Java_fp = NULL; | |
| 42 _last_Java_pc = NULL; | |
| 43 } | |
| 44 | |
| 45 void copy(JavaFrameAnchor* src) { | |
| 46 // In order to make sure the transition state is valid for "this" | |
| 47 // We must clear _last_Java_sp before copying the rest of the new data | |
| 48 // | |
| 49 // Hack Alert: Temporary bugfix for 4717480/4721647 | |
| 50 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp | |
| 51 // unless the value is changing | |
| 52 // | |
| 53 if (_last_Java_sp != src->_last_Java_sp) | |
| 54 _last_Java_sp = NULL; | |
| 55 | |
| 56 _last_Java_fp = src->_last_Java_fp; | |
| 57 _last_Java_pc = src->_last_Java_pc; | |
| 58 // Must be last so profiler will always see valid frame if has_last_frame() is true | |
| 59 _last_Java_sp = src->_last_Java_sp; | |
| 60 } | |
| 61 | |
| 62 // Always walkable | |
| 63 bool walkable(void) { return true; } | |
| 64 // Never any thing to do since we are always walkable and can find address of return addresses | |
| 65 void make_walkable(JavaThread* thread) { } | |
| 66 | |
| 67 intptr_t* last_Java_sp(void) const { return _last_Java_sp; } | |
| 68 | |
| 69 private: | |
| 70 | |
| 71 static ByteSize last_Java_fp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_fp); } | |
| 72 | |
| 73 public: | |
| 74 | |
| 75 void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; } | |
| 76 | |
| 77 intptr_t* last_Java_fp(void) { return _last_Java_fp; } | |
| 78 // Assert (last_Java_sp == NULL || fp == NULL) | |
| 79 void set_last_Java_fp(intptr_t* fp) { _last_Java_fp = fp; } |