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src/share/vm/runtime/javaFrameAnchor.hpp@1d1603768966 (annotated)
src/share/vm/runtime/javaFrameAnchor.hpp
Tue, 05 Apr 2011 14:12:31 -0700
- author
- trims
- date
- Tue, 05 Apr 2011 14:12:31 -0700
- changeset 2708
- 1d1603768966
- parent 2508
- b92c45f2bc75
- child 3156
- f08d439fab8c
- permissions
- -rw-r--r--
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
| duke@435 | 1 | /* |
| trims@2708 | 2 | * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| stefank@2314 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP |
| stefank@2314 | 26 | #define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "utilities/globalDefinitions.hpp" |
| stefank@2314 | 29 | #ifdef TARGET_OS_ARCH_linux_x86 |
| stefank@2314 | 30 | # include "orderAccess_linux_x86.inline.hpp" |
| stefank@2314 | 31 | #endif |
| stefank@2314 | 32 | #ifdef TARGET_OS_ARCH_linux_sparc |
| stefank@2314 | 33 | # include "orderAccess_linux_sparc.inline.hpp" |
| stefank@2314 | 34 | #endif |
| stefank@2314 | 35 | #ifdef TARGET_OS_ARCH_linux_zero |
| stefank@2314 | 36 | # include "orderAccess_linux_zero.inline.hpp" |
| stefank@2314 | 37 | #endif |
| stefank@2314 | 38 | #ifdef TARGET_OS_ARCH_solaris_x86 |
| stefank@2314 | 39 | # include "orderAccess_solaris_x86.inline.hpp" |
| stefank@2314 | 40 | #endif |
| stefank@2314 | 41 | #ifdef TARGET_OS_ARCH_solaris_sparc |
| stefank@2314 | 42 | # include "orderAccess_solaris_sparc.inline.hpp" |
| stefank@2314 | 43 | #endif |
| stefank@2314 | 44 | #ifdef TARGET_OS_ARCH_windows_x86 |
| stefank@2314 | 45 | # include "orderAccess_windows_x86.inline.hpp" |
| stefank@2314 | 46 | #endif |
| bobv@2508 | 47 | #ifdef TARGET_OS_ARCH_linux_arm |
| bobv@2508 | 48 | # include "orderAccess_linux_arm.inline.hpp" |
| bobv@2508 | 49 | #endif |
| bobv@2508 | 50 | #ifdef TARGET_OS_ARCH_linux_ppc |
| bobv@2508 | 51 | # include "orderAccess_linux_ppc.inline.hpp" |
| bobv@2508 | 52 | #endif |
| duke@435 | 53 | // |
| duke@435 | 54 | // An object for encapsulating the machine/os dependent part of a JavaThread frame state |
| duke@435 | 55 | // |
| duke@435 | 56 | class JavaThread; |
| duke@435 | 57 | |
| duke@435 | 58 | class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC { |
| duke@435 | 59 | // Too many friends... |
| duke@435 | 60 | friend class CallNativeDirectNode; |
| duke@435 | 61 | friend class OptoRuntime; |
| duke@435 | 62 | friend class Runtime1; |
| duke@435 | 63 | friend class StubAssembler; |
| duke@435 | 64 | friend class CallRuntimeDirectNode; |
| duke@435 | 65 | friend class MacroAssembler; |
| duke@435 | 66 | friend class InterpreterGenerator; |
| duke@435 | 67 | friend class LIR_Assembler; |
| duke@435 | 68 | friend class GraphKit; |
| duke@435 | 69 | friend class StubGenerator; |
| duke@435 | 70 | friend class JavaThread; |
| duke@435 | 71 | friend class frame; |
| duke@435 | 72 | friend class VMStructs; |
| duke@435 | 73 | friend class BytecodeInterpreter; |
| duke@435 | 74 | friend class JavaCallWrapper; |
| duke@435 | 75 | |
| duke@435 | 76 | private: |
| duke@435 | 77 | // |
| duke@435 | 78 | // Whenever _last_Java_sp != NULL other anchor fields MUST be valid! |
| duke@435 | 79 | // The stack may not be walkable [check with walkable() ] but the values must be valid. |
| duke@435 | 80 | // The profiler apparently depends on this. |
| duke@435 | 81 | // |
| duke@435 | 82 | intptr_t* volatile _last_Java_sp; |
| duke@435 | 83 | |
| duke@435 | 84 | // Whenever we call from Java to native we can not be assured that the return |
| duke@435 | 85 | // address that composes the last_Java_frame will be in an accessible location |
| duke@435 | 86 | // so calls from Java to native store that pc (or one good enough to locate |
| duke@435 | 87 | // the oopmap) in the frame anchor. Since the frames that call from Java to |
| duke@435 | 88 | // native are never deoptimized we never need to patch the pc and so this |
| duke@435 | 89 | // is acceptable. |
| duke@435 | 90 | volatile address _last_Java_pc; |
| duke@435 | 91 | |
| duke@435 | 92 | // tells whether the last Java frame is set |
| duke@435 | 93 | // It is important that when last_Java_sp != NULL that the rest of the frame |
| duke@435 | 94 | // anchor (including platform specific) all be valid. |
| duke@435 | 95 | |
| duke@435 | 96 | bool has_last_Java_frame() const { return _last_Java_sp != NULL; } |
| duke@435 | 97 | // This is very dangerous unless sp == NULL |
| duke@435 | 98 | // Invalidate the anchor so that has_last_frame is false |
| duke@435 | 99 | // and no one should look at the other fields. |
| duke@435 | 100 | void zap(void) { _last_Java_sp = NULL; } |
| duke@435 | 101 | |
| stefank@2314 | 102 | #ifdef TARGET_ARCH_x86 |
| stefank@2314 | 103 | # include "javaFrameAnchor_x86.hpp" |
| stefank@2314 | 104 | #endif |
| stefank@2314 | 105 | #ifdef TARGET_ARCH_sparc |
| stefank@2314 | 106 | # include "javaFrameAnchor_sparc.hpp" |
| stefank@2314 | 107 | #endif |
| stefank@2314 | 108 | #ifdef TARGET_ARCH_zero |
| stefank@2314 | 109 | # include "javaFrameAnchor_zero.hpp" |
| stefank@2314 | 110 | #endif |
| bobv@2508 | 111 | #ifdef TARGET_ARCH_arm |
| bobv@2508 | 112 | # include "javaFrameAnchor_arm.hpp" |
| bobv@2508 | 113 | #endif |
| bobv@2508 | 114 | #ifdef TARGET_ARCH_ppc |
| bobv@2508 | 115 | # include "javaFrameAnchor_ppc.hpp" |
| bobv@2508 | 116 | #endif |
| stefank@2314 | 117 | |
| duke@435 | 118 | |
| duke@435 | 119 | public: |
| duke@435 | 120 | JavaFrameAnchor() { clear(); } |
| duke@435 | 121 | JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); } |
| duke@435 | 122 | |
| duke@435 | 123 | void set_last_Java_pc(address pc) { _last_Java_pc = pc; } |
| duke@435 | 124 | |
| duke@435 | 125 | // Assembly stub generation helpers |
| duke@435 | 126 | |
| duke@435 | 127 | static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); } |
| duke@435 | 128 | static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); } |
| duke@435 | 129 | |
| duke@435 | 130 | }; |
| stefank@2314 | 131 | |
| stefank@2314 | 132 | #endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP |
