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comparison: src/share/vm/runtime/javaFrameAnchor.hpp
src/share/vm/runtime/javaFrameAnchor.hpp
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| 1 /* | |
| 2 * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. | |
| 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP | |
| 26 #define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP | |
| 27 | |
| 28 #include "utilities/globalDefinitions.hpp" | |
| 29 #ifdef TARGET_OS_ARCH_linux_x86 | |
| 30 # include "orderAccess_linux_x86.inline.hpp" | |
| 31 #endif | |
| 32 #ifdef TARGET_OS_ARCH_linux_sparc | |
| 33 # include "orderAccess_linux_sparc.inline.hpp" | |
| 34 #endif | |
| 35 #ifdef TARGET_OS_ARCH_linux_zero | |
| 36 # include "orderAccess_linux_zero.inline.hpp" | |
| 37 #endif | |
| 38 #ifdef TARGET_OS_ARCH_solaris_x86 | |
| 39 # include "orderAccess_solaris_x86.inline.hpp" | |
| 40 #endif | |
| 41 #ifdef TARGET_OS_ARCH_solaris_sparc | |
| 42 # include "orderAccess_solaris_sparc.inline.hpp" | |
| 43 #endif | |
| 44 #ifdef TARGET_OS_ARCH_windows_x86 | |
| 45 # include "orderAccess_windows_x86.inline.hpp" | |
| 46 #endif | |
| 47 #ifdef TARGET_OS_ARCH_linux_arm | |
| 48 # include "orderAccess_linux_arm.inline.hpp" | |
| 49 #endif | |
| 50 #ifdef TARGET_OS_ARCH_linux_ppc | |
| 51 # include "orderAccess_linux_ppc.inline.hpp" | |
| 52 #endif | |
| 53 #ifdef TARGET_OS_ARCH_aix_ppc | |
| 54 # include "orderAccess_aix_ppc.inline.hpp" | |
| 55 #endif | |
| 56 #ifdef TARGET_OS_ARCH_bsd_x86 | |
| 57 # include "orderAccess_bsd_x86.inline.hpp" | |
| 58 #endif | |
| 59 #ifdef TARGET_OS_ARCH_bsd_zero | |
| 60 # include "orderAccess_bsd_zero.inline.hpp" | |
| 61 #endif | |
| 62 | |
| 63 // | |
| 64 // An object for encapsulating the machine/os dependent part of a JavaThread frame state | |
| 65 // | |
| 66 class JavaThread; | |
| 67 | |
| 68 class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC { | |
| 69 // Too many friends... | |
| 70 friend class CallNativeDirectNode; | |
| 71 friend class OptoRuntime; | |
| 72 friend class Runtime1; | |
| 73 friend class StubAssembler; | |
| 74 friend class CallRuntimeDirectNode; | |
| 75 friend class MacroAssembler; | |
| 76 friend class InterpreterGenerator; | |
| 77 friend class LIR_Assembler; | |
| 78 friend class GraphKit; | |
| 79 friend class StubGenerator; | |
| 80 friend class JavaThread; | |
| 81 friend class frame; | |
| 82 friend class VMStructs; | |
| 83 friend class BytecodeInterpreter; | |
| 84 friend class JavaCallWrapper; | |
| 85 | |
| 86 private: | |
| 87 // | |
| 88 // Whenever _last_Java_sp != NULL other anchor fields MUST be valid! | |
| 89 // The stack may not be walkable [check with walkable() ] but the values must be valid. | |
| 90 // The profiler apparently depends on this. | |
| 91 // | |
| 92 intptr_t* volatile _last_Java_sp; | |
| 93 | |
| 94 // Whenever we call from Java to native we can not be assured that the return | |
| 95 // address that composes the last_Java_frame will be in an accessible location | |
| 96 // so calls from Java to native store that pc (or one good enough to locate | |
| 97 // the oopmap) in the frame anchor. Since the frames that call from Java to | |
| 98 // native are never deoptimized we never need to patch the pc and so this | |
| 99 // is acceptable. | |
| 100 volatile address _last_Java_pc; | |
| 101 | |
| 102 // tells whether the last Java frame is set | |
| 103 // It is important that when last_Java_sp != NULL that the rest of the frame | |
| 104 // anchor (including platform specific) all be valid. | |
| 105 | |
| 106 bool has_last_Java_frame() const { return _last_Java_sp != NULL; } | |
| 107 // This is very dangerous unless sp == NULL | |
| 108 // Invalidate the anchor so that has_last_frame is false | |
| 109 // and no one should look at the other fields. | |
| 110 void zap(void) { _last_Java_sp = NULL; } | |
| 111 | |
| 112 #ifdef TARGET_ARCH_x86 | |
| 113 # include "javaFrameAnchor_x86.hpp" | |
| 114 #endif | |
| 115 #ifdef TARGET_ARCH_sparc | |
| 116 # include "javaFrameAnchor_sparc.hpp" | |
| 117 #endif | |
| 118 #ifdef TARGET_ARCH_zero | |
| 119 # include "javaFrameAnchor_zero.hpp" | |
| 120 #endif | |
| 121 #ifdef TARGET_ARCH_arm | |
| 122 # include "javaFrameAnchor_arm.hpp" | |
| 123 #endif | |
| 124 #ifdef TARGET_ARCH_ppc | |
| 125 # include "javaFrameAnchor_ppc.hpp" | |
| 126 #endif | |
| 127 | |
| 128 | |
| 129 public: | |
| 130 JavaFrameAnchor() { clear(); } | |
| 131 JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); } | |
| 132 | |
| 133 void set_last_Java_pc(address pc) { _last_Java_pc = pc; } | |
| 134 | |
| 135 // Assembly stub generation helpers | |
| 136 | |
| 137 static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); } | |
| 138 static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); } | |
| 139 | |
| 140 }; | |
| 141 | |
| 142 #endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP |
