1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/runtime/javaFrameAnchor.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,142 @@
1.4 +/*
1.5 + * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
1.29 +#define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
1.30 +
1.31 +#include "utilities/globalDefinitions.hpp"
1.32 +#ifdef TARGET_OS_ARCH_linux_x86
1.33 +# include "orderAccess_linux_x86.inline.hpp"
1.34 +#endif
1.35 +#ifdef TARGET_OS_ARCH_linux_sparc
1.36 +# include "orderAccess_linux_sparc.inline.hpp"
1.37 +#endif
1.38 +#ifdef TARGET_OS_ARCH_linux_zero
1.39 +# include "orderAccess_linux_zero.inline.hpp"
1.40 +#endif
1.41 +#ifdef TARGET_OS_ARCH_solaris_x86
1.42 +# include "orderAccess_solaris_x86.inline.hpp"
1.43 +#endif
1.44 +#ifdef TARGET_OS_ARCH_solaris_sparc
1.45 +# include "orderAccess_solaris_sparc.inline.hpp"
1.46 +#endif
1.47 +#ifdef TARGET_OS_ARCH_windows_x86
1.48 +# include "orderAccess_windows_x86.inline.hpp"
1.49 +#endif
1.50 +#ifdef TARGET_OS_ARCH_linux_arm
1.51 +# include "orderAccess_linux_arm.inline.hpp"
1.52 +#endif
1.53 +#ifdef TARGET_OS_ARCH_linux_ppc
1.54 +# include "orderAccess_linux_ppc.inline.hpp"
1.55 +#endif
1.56 +#ifdef TARGET_OS_ARCH_aix_ppc
1.57 +# include "orderAccess_aix_ppc.inline.hpp"
1.58 +#endif
1.59 +#ifdef TARGET_OS_ARCH_bsd_x86
1.60 +# include "orderAccess_bsd_x86.inline.hpp"
1.61 +#endif
1.62 +#ifdef TARGET_OS_ARCH_bsd_zero
1.63 +# include "orderAccess_bsd_zero.inline.hpp"
1.64 +#endif
1.65 +
1.66 +//
1.67 +// An object for encapsulating the machine/os dependent part of a JavaThread frame state
1.68 +//
1.69 +class JavaThread;
1.70 +
1.71 +class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC {
1.72 +// Too many friends...
1.73 +friend class CallNativeDirectNode;
1.74 +friend class OptoRuntime;
1.75 +friend class Runtime1;
1.76 +friend class StubAssembler;
1.77 +friend class CallRuntimeDirectNode;
1.78 +friend class MacroAssembler;
1.79 +friend class InterpreterGenerator;
1.80 +friend class LIR_Assembler;
1.81 +friend class GraphKit;
1.82 +friend class StubGenerator;
1.83 +friend class JavaThread;
1.84 +friend class frame;
1.85 +friend class VMStructs;
1.86 +friend class BytecodeInterpreter;
1.87 +friend class JavaCallWrapper;
1.88 +
1.89 + private:
1.90 + //
1.91 + // Whenever _last_Java_sp != NULL other anchor fields MUST be valid!
1.92 + // The stack may not be walkable [check with walkable() ] but the values must be valid.
1.93 + // The profiler apparently depends on this.
1.94 + //
1.95 + intptr_t* volatile _last_Java_sp;
1.96 +
1.97 + // Whenever we call from Java to native we can not be assured that the return
1.98 + // address that composes the last_Java_frame will be in an accessible location
1.99 + // so calls from Java to native store that pc (or one good enough to locate
1.100 + // the oopmap) in the frame anchor. Since the frames that call from Java to
1.101 + // native are never deoptimized we never need to patch the pc and so this
1.102 + // is acceptable.
1.103 + volatile address _last_Java_pc;
1.104 +
1.105 + // tells whether the last Java frame is set
1.106 + // It is important that when last_Java_sp != NULL that the rest of the frame
1.107 + // anchor (including platform specific) all be valid.
1.108 +
1.109 + bool has_last_Java_frame() const { return _last_Java_sp != NULL; }
1.110 + // This is very dangerous unless sp == NULL
1.111 + // Invalidate the anchor so that has_last_frame is false
1.112 + // and no one should look at the other fields.
1.113 + void zap(void) { _last_Java_sp = NULL; }
1.114 +
1.115 +#ifdef TARGET_ARCH_x86
1.116 +# include "javaFrameAnchor_x86.hpp"
1.117 +#endif
1.118 +#ifdef TARGET_ARCH_sparc
1.119 +# include "javaFrameAnchor_sparc.hpp"
1.120 +#endif
1.121 +#ifdef TARGET_ARCH_zero
1.122 +# include "javaFrameAnchor_zero.hpp"
1.123 +#endif
1.124 +#ifdef TARGET_ARCH_arm
1.125 +# include "javaFrameAnchor_arm.hpp"
1.126 +#endif
1.127 +#ifdef TARGET_ARCH_ppc
1.128 +# include "javaFrameAnchor_ppc.hpp"
1.129 +#endif
1.130 +
1.131 +
1.132 +public:
1.133 + JavaFrameAnchor() { clear(); }
1.134 + JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); }
1.135 +
1.136 + void set_last_Java_pc(address pc) { _last_Java_pc = pc; }
1.137 +
1.138 + // Assembly stub generation helpers
1.139 +
1.140 + static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); }
1.141 + static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); }
1.142 +
1.143 +};
1.144 +
1.145 +#endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
