Mercurial > hg > truffle
annotate src/cpu/x86/vm/javaFrameAnchor_x86.hpp @ 7212:291ffc492eb6
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 14 Dec 2012 14:35:13 +0100 |
| parents | f95d63e2154a |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2002, 2010, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef CPU_X86_VM_JAVAFRAMEANCHOR_X86_HPP |
| 26 #define CPU_X86_VM_JAVAFRAMEANCHOR_X86_HPP | |
| 27 | |
| 0 | 28 private: |
| 29 | |
| 30 // FP value associated with _last_Java_sp: | |
| 31 intptr_t* volatile _last_Java_fp; // pointer is volatile not what it points to | |
| 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 void clear(void) { | |
| 41 // clearing _last_Java_sp must be first | |
| 42 _last_Java_sp = NULL; | |
| 43 // fence? | |
| 44 _last_Java_fp = NULL; | |
| 45 _last_Java_pc = NULL; | |
| 46 } | |
| 47 | |
| 48 void copy(JavaFrameAnchor* src) { | |
| 49 // In order to make sure the transition state is valid for "this" | |
| 50 // We must clear _last_Java_sp before copying the rest of the new data | |
| 51 // | |
| 52 // Hack Alert: Temporary bugfix for 4717480/4721647 | |
| 53 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp | |
| 54 // unless the value is changing | |
| 55 // | |
| 56 if (_last_Java_sp != src->_last_Java_sp) | |
| 57 _last_Java_sp = NULL; | |
| 58 | |
| 59 _last_Java_fp = src->_last_Java_fp; | |
| 60 _last_Java_pc = src->_last_Java_pc; | |
| 61 // Must be last so profiler will always see valid frame if has_last_frame() is true | |
| 62 _last_Java_sp = src->_last_Java_sp; | |
| 63 } | |
| 64 | |
| 65 // Always walkable | |
| 66 bool walkable(void) { return true; } | |
| 67 // Never any thing to do since we are always walkable and can find address of return addresses | |
| 68 void make_walkable(JavaThread* thread) { } | |
| 69 | |
| 70 intptr_t* last_Java_sp(void) const { return _last_Java_sp; } | |
| 71 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
72 address last_Java_pc(void) { return _last_Java_pc; } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
73 |
| 0 | 74 private: |
| 75 | |
| 76 static ByteSize last_Java_fp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_fp); } | |
| 77 | |
| 78 public: | |
| 79 | |
| 80 void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; } | |
| 81 | |
| 82 intptr_t* last_Java_fp(void) { return _last_Java_fp; } | |
| 83 // Assert (last_Java_sp == NULL || fp == NULL) | |
| 84 void set_last_Java_fp(intptr_t* fp) { _last_Java_fp = fp; } | |
| 1972 | 85 |
| 86 #endif // CPU_X86_VM_JAVAFRAMEANCHOR_X86_HPP |