Mercurial > hg > graal-compiler
annotate src/cpu/sparc/vm/javaFrameAnchor_sparc.hpp @ 1681:126ea7725993
6953477: Increase portability and flexibility of building Hotspot
Summary: A collection of portability improvements including shared code support for PPC, ARM platforms, software floating point, cross compilation support and improvements in error crash detail.
Reviewed-by: phh, never, coleenp, dholmes
| author | bobv |
|---|---|
| date | Tue, 03 Aug 2010 08:13:38 -0400 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, 2005, 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
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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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 private: | |
| 26 volatile int _flags; | |
| 27 | |
| 28 public: | |
| 29 | |
| 30 enum pd_Constants { | |
| 31 flushed = 1 // winodows have flushed | |
| 32 }; | |
| 33 | |
| 34 int flags(void) { return _flags; } | |
| 35 void set_flags(int flags) { _flags = flags; } | |
| 36 | |
| 37 static ByteSize flags_offset() { return byte_offset_of(JavaFrameAnchor, _flags); } | |
| 38 | |
| 39 // Each arch must define clear, copy | |
| 40 // These are used by objects that only care about: | |
| 41 // 1 - initializing a new state (thread creation, javaCalls) | |
| 42 // 2 - saving a current state (javaCalls) | |
| 43 // 3 - restoring an old state (javaCalls) | |
| 44 | |
| 45 void clear(void) { | |
| 46 // clearing _last_Java_sp must be first | |
| 47 _last_Java_sp = NULL; | |
| 48 // fence? | |
| 49 _flags = 0; | |
| 50 _last_Java_pc = NULL; | |
| 51 } | |
| 52 | |
| 53 void copy(JavaFrameAnchor* src) { | |
| 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 data | |
| 56 // | |
| 57 // Hack Alert: Temporary bugfix for 4717480/4721647 | |
| 58 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp | |
| 59 // unless the value is changing | |
| 60 // | |
| 61 if (_last_Java_sp != src->_last_Java_sp) | |
| 62 _last_Java_sp = NULL; | |
| 63 | |
| 64 _flags = src->_flags; | |
| 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 _last_Java_sp = src->_last_Java_sp; | |
| 68 } | |
| 69 | |
| 70 // Is stack walkable | |
| 71 inline bool walkable( void) { | |
| 72 return _flags & flushed; | |
| 73 } | |
| 74 | |
| 75 void make_walkable(JavaThread* thread); | |
| 76 | |
| 77 void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; } | |
| 78 | |
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1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
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79 address last_Java_pc(void) { return _last_Java_pc; } |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
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80 |
| 0 | 81 // These are only used by friends |
| 82 private: | |
| 83 | |
| 84 intptr_t* last_Java_sp() const { | |
| 85 // _last_Java_sp will always be a an unbiased stack pointer | |
| 86 // if is is biased then some setter screwed up. This is | |
| 87 // deadly. | |
| 88 #ifdef _LP64 | |
| 89 assert(((intptr_t)_last_Java_sp & 0xF) == 0, "Biased last_Java_sp"); | |
| 90 #endif | |
| 91 return _last_Java_sp; | |
| 92 } | |
| 93 | |
| 94 void capture_last_Java_pc(intptr_t* sp); | |
| 95 | |
| 96 void set_window_flushed( void) { | |
| 97 _flags |= flushed; | |
| 98 OrderAccess::fence(); | |
| 99 } |