jdk8-mips64-public/hotspot: src/share/vm/runtime/javaFrameAnchor.hpp@2d8a650513c2 (annotated)

src/share/vm/runtime/javaFrameAnchor.hpp@2d8a650513c2 (annotated)

src/share/vm/runtime/javaFrameAnchor.hpp

Fri, 29 Apr 2016 00:06:10 +0800

author: aoqi
date: Fri, 29 Apr 2016 00:06:10 +0800
changeset 1: 2d8a650513c2
parent 0: f90c822e73f8
child 6876: 710a3c8b516e
permissions: -rw-r--r--

Added MIPS 64-bit port.

 /*
  * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 /*
  * This file has been modified by Loongson Technology in 2015. These
  * modifications are Copyright (c) 2015 Loongson Technology, and are made
  * available on the same license terms set forth above.
  */
 #ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
 #define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
 #include "utilities/globalDefinitions.hpp"
 #ifdef TARGET_OS_ARCH_linux_x86
 # include "orderAccess_linux_x86.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_linux_sparc
 # include "orderAccess_linux_sparc.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_linux_mips
 # include "orderAccess_linux_mips.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_linux_zero
 # include "orderAccess_linux_zero.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_solaris_x86
 # include "orderAccess_solaris_x86.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_solaris_sparc
 # include "orderAccess_solaris_sparc.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_windows_x86
 # include "orderAccess_windows_x86.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_linux_arm
 # include "orderAccess_linux_arm.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_linux_ppc
 # include "orderAccess_linux_ppc.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_aix_ppc
 # include "orderAccess_aix_ppc.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_bsd_x86
 # include "orderAccess_bsd_x86.inline.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_bsd_zero
 # include "orderAccess_bsd_zero.inline.hpp"
 #endif
 //
 // An object for encapsulating the machine/os dependent part of a JavaThread frame state
 //
 class JavaThread;
 class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC {
 // Too many friends...
 friend class CallNativeDirectNode;
 friend class OptoRuntime;
 friend class Runtime1;
 friend class StubAssembler;
 friend class CallRuntimeDirectNode;
 friend class MacroAssembler;
 friend class InterpreterGenerator;
 friend class LIR_Assembler;
 friend class GraphKit;
 friend class StubGenerator;
 friend class JavaThread;
 friend class frame;
 friend class VMStructs;
 friend class BytecodeInterpreter;
 friend class JavaCallWrapper;
  private:
   //
   // Whenever _last_Java_sp != NULL other anchor fields MUST be valid!
   // The stack may not be walkable [check with walkable() ] but the values must be valid.
   // The profiler apparently depends on this.
   //
   intptr_t* volatile _last_Java_sp;
   // Whenever we call from Java to native we can not be assured that the return
   // address that composes the last_Java_frame will be in an accessible location
   // so calls from Java to native store that pc (or one good enough to locate
   // the oopmap) in the frame anchor. Since the frames that call from Java to
   // native are never deoptimized we never need to patch the pc and so this
   // is acceptable.
   volatile  address _last_Java_pc;
   // tells whether the last Java frame is set
   // It is important that when last_Java_sp != NULL that the rest of the frame
   // anchor (including platform specific) all be valid.
   bool has_last_Java_frame() const                   { return _last_Java_sp != NULL; }
   // This is very dangerous unless sp == NULL
   // Invalidate the anchor so that has_last_frame is false
   // and no one should look at the other fields.
   void zap(void)                                     { _last_Java_sp = NULL; }
 #ifdef TARGET_ARCH_x86
 # include "javaFrameAnchor_x86.hpp"
 #endif
 #ifdef TARGET_ARCH_mips
 # include "javaFrameAnchor_mips.hpp"
 #endif
 #ifdef TARGET_ARCH_sparc
 # include "javaFrameAnchor_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_zero
 # include "javaFrameAnchor_zero.hpp"
 #endif
 #ifdef TARGET_ARCH_arm
 # include "javaFrameAnchor_arm.hpp"
 #endif
 #ifdef TARGET_ARCH_ppc
 # include "javaFrameAnchor_ppc.hpp"
 #endif
 public:
   JavaFrameAnchor()                              { clear(); }
   JavaFrameAnchor(JavaFrameAnchor *src)          { copy(src); }
   void set_last_Java_pc(address pc)              { _last_Java_pc = pc; }
   // Assembly stub generation helpers
   static ByteSize last_Java_sp_offset()          { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); }
   static ByteSize last_Java_pc_offset()          { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); }
 };
 #endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/javaFrameAnchor.hpp@2d8a650513c2 (annotated)

src/share/vm/runtime/javaFrameAnchor.hpp