Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/javaFrameAnchor.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 |
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|---|---|
| 0 | 1 /* |
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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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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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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 // An object for encapsulating the machine/os dependent part of a JavaThread frame state | |
| 26 // | |
| 27 class JavaThread; | |
| 28 | |
| 29 class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC { | |
| 30 // Too many friends... | |
| 31 friend class CallNativeDirectNode; | |
| 32 friend class OptoRuntime; | |
| 33 friend class Runtime1; | |
| 34 friend class StubAssembler; | |
| 35 friend class CallRuntimeDirectNode; | |
| 36 friend class MacroAssembler; | |
| 37 friend class InterpreterGenerator; | |
| 38 friend class LIR_Assembler; | |
| 39 friend class GraphKit; | |
| 40 friend class StubGenerator; | |
| 41 friend class JavaThread; | |
| 42 friend class frame; | |
| 43 friend class VMStructs; | |
| 44 friend class BytecodeInterpreter; | |
| 45 friend class JavaCallWrapper; | |
| 46 | |
| 47 private: | |
| 48 // | |
| 49 // Whenever _last_Java_sp != NULL other anchor fields MUST be valid! | |
| 50 // The stack may not be walkable [check with walkable() ] but the values must be valid. | |
| 51 // The profiler apparently depends on this. | |
| 52 // | |
| 53 intptr_t* volatile _last_Java_sp; | |
| 54 | |
| 55 // Whenever we call from Java to native we can not be assured that the return | |
| 56 // address that composes the last_Java_frame will be in an accessible location | |
| 57 // so calls from Java to native store that pc (or one good enough to locate | |
| 58 // the oopmap) in the frame anchor. Since the frames that call from Java to | |
| 59 // native are never deoptimized we never need to patch the pc and so this | |
| 60 // is acceptable. | |
| 61 volatile address _last_Java_pc; | |
| 62 | |
| 63 // tells whether the last Java frame is set | |
| 64 // It is important that when last_Java_sp != NULL that the rest of the frame | |
| 65 // anchor (including platform specific) all be valid. | |
| 66 | |
| 67 bool has_last_Java_frame() const { return _last_Java_sp != NULL; } | |
| 68 // This is very dangerous unless sp == NULL | |
| 69 // Invalidate the anchor so that has_last_frame is false | |
| 70 // and no one should look at the other fields. | |
| 71 void zap(void) { _last_Java_sp = NULL; } | |
| 72 | |
| 73 #include "incls/_javaFrameAnchor_pd.hpp.incl" | |
| 74 | |
| 75 public: | |
| 76 JavaFrameAnchor() { clear(); } | |
| 77 JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); } | |
| 78 | |
| 79 address last_Java_pc(void) { return _last_Java_pc; } | |
| 80 void set_last_Java_pc(address pc) { _last_Java_pc = pc; } | |
| 81 | |
| 82 // Assembly stub generation helpers | |
| 83 | |
| 84 static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); } | |
| 85 static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); } | |
| 86 | |
| 87 }; |