jdk8-mips64-public/hotspot: src/cpu/mips/vm/frame_mips.hpp@d885f8d65c58 (annotated)

src/cpu/mips/vm/frame_mips.hpp@d885f8d65c58 (annotated)

src/cpu/mips/vm/frame_mips.hpp

Tue, 26 Jul 2016 17:06:17 +0800

author: fujie
date: Tue, 26 Jul 2016 17:06:17 +0800
changeset 41: d885f8d65c58
parent 1: 2d8a650513c2
child 6880: 52ea28d233d2
permissions: -rw-r--r--

Add multiply word to GPR instruction (mul) in MIPS assembler.

 /*
  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2015, 2016, Loongson Technology. 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.
  *
  */
 #ifndef CPU_MIPS_VM_FRAME_MIPS_HPP
 #define CPU_MIPS_VM_FRAME_MIPS_HPP
 #include "runtime/synchronizer.hpp"
 #include "utilities/top.hpp"
 // A frame represents a physical stack frame (an activation).  Frames can be
 // C or Java frames, and the Java frames can be interpreted or compiled.
 // In contrast, vframes represent source-level activations, so that one physical frame
 // can correspond to multiple source level frames because of inlining.
 // A frame is comprised of {pc, fp, sp}
 // ------------------------------ Asm interpreter ----------------------------------------
 // Layout of asm interpreter frame:
 //    [expression stack      ] * <- sp
 //    [monitors              ]   \
 //     ...                        | monitor block size
 //    [monitors              ]   /
 //    [monitor block size    ]
 //    [byte code index/pointr]                   = bcx()                bcx_offset
 //    [pointer to locals     ]                   = locals()             locals_offset
 //    [constant pool cache   ]                   = cache()              cache_offset
 //    [methodData            ]                   = mdp()                mdx_offset
 //    [methodOop             ]                   = method()             method_offset
 //    [last sp               ]                   = last_sp()            last_sp_offset
 //    [old stack pointer     ]                     (sender_sp)          sender_sp_offset
 //    [old frame pointer     ]   <- fp           = link()
 //    [return pc             ]
 //    [oop temp              ]                     (only for native calls)
 //    [locals and parameters ]
 //                               <- sender sp
 // ------------------------------ Asm interpreter ----------------------------------------
 // ------------------------------ C++ interpreter ----------------------------------------
 //
 // Layout of C++ interpreter frame: (While executing in BytecodeInterpreter::run)
 //
 //                             <- SP (current esp/rsp)
 //    [local variables         ] BytecodeInterpreter::run local variables
 //    ...                        BytecodeInterpreter::run local variables
 //    [local variables         ] BytecodeInterpreter::run local variables
 //    [old frame pointer       ]   fp [ BytecodeInterpreter::run's ebp/rbp ]
 //    [return pc               ]  (return to frame manager)
 //    [interpreter_state*      ]  (arg to BytecodeInterpreter::run)   --------------
 //    [expression stack        ] <- last_Java_sp                           |
 //    [...                     ] * <- interpreter_state.stack              |
 //    [expression stack        ] * <- interpreter_state.stack_base         |
 //    [monitors                ]   \                                       |
 //     ...                          | monitor block size                   |
 //    [monitors                ]   / <- interpreter_state.monitor_base     |
 //    [struct interpretState   ] <-----------------------------------------|
 //    [return pc               ] (return to callee of frame manager [1]
 //    [locals and parameters   ]
 //                               <- sender sp
 // [1] When the c++ interpreter calls a new method it returns to the frame
 //     manager which allocates a new frame on the stack. In that case there
 //     is no real callee of this newly allocated frame. The frame manager is
 //     aware of the  additional frame(s) and will pop them as nested calls
 //     complete. Howevers tTo make it look good in the debugger the frame
 //     manager actually installs a dummy pc pointing to RecursiveInterpreterActivation
 //     with a fake interpreter_state* parameter to make it easy to debug
 //     nested calls.
 // Note that contrary to the layout for the assembly interpreter the
 // expression stack allocated for the C++ interpreter is full sized.
 // However this is not as bad as it seems as the interpreter frame_manager
 // will truncate the unused space on succesive method calls.
 //
 // ------------------------------ C++ interpreter ----------------------------------------
 // Layout of interpreter frame:
 //
 //    [ monitor entry            ] <--- sp
 //      ...
 //    [ monitor entry            ]
 // -7 [ monitor block top        ] ( the top monitor entry )
 // -6 [ byte code pointer        ] (if native, bcp = 0)
 // -5 [ constant pool cache      ]
 // -4 [ methodData      	 ] mdx_offset(not core only)
 // -3 [ methodOop                ]
 // -2 [ locals offset		 ]
 // -1 [ sender's sp              ]
 //  0 [ sender's fp              ] <--fp
 //  1 [ return address           ]
 //  2 [ oop temp offset 	 ] (only for native calls)
 //  3 [ result handler offset	 ] (only for native calls)
 //  4 [ result type info         ] (only for native calls)
 //    [ local var m-1            ]
 //      ...
 //    [ local var 0              ]
 //    [ argumnet word n-1        ] <--- ( sender's sp )
 //        ...
 //    [ argument word 0          ] <--- S7
  public:
   enum {
     pc_return_offset                                 =  0,
     // All frames
     link_offset                                      =  0,
     return_addr_offset                               =  1,
     // non-interpreter frames
     sender_sp_offset                                 =  2,
 #ifndef CC_INTERP
     // Interpreter frames
     interpreter_frame_return_addr_offset             =  1,
     interpreter_frame_result_handler_offset          =  3, // for native calls only
     interpreter_frame_oop_temp_offset                =  2, // for native calls only
     interpreter_frame_sender_fp_offset         	     =  0,
     interpreter_frame_sender_sp_offset               = -1,
     // outgoing sp before a call to an invoked method
     interpreter_frame_last_sp_offset                 = interpreter_frame_sender_sp_offset - 1,
     interpreter_frame_locals_offset        	     = interpreter_frame_last_sp_offset - 1,
     interpreter_frame_method_offset                  = interpreter_frame_locals_offset - 1,
     interpreter_frame_mdx_offset                     = interpreter_frame_method_offset - 1,
     interpreter_frame_cache_offset                   = interpreter_frame_mdx_offset - 1,
     //    interpreter_frame_locals_offset                  = interpreter_frame_cache_offset - 1,
     interpreter_frame_bcx_offset                     = interpreter_frame_cache_offset - 1,
     interpreter_frame_initial_sp_offset              = interpreter_frame_bcx_offset - 1,
     interpreter_frame_monitor_block_top_offset       = interpreter_frame_initial_sp_offset,
     interpreter_frame_monitor_block_bottom_offset    = interpreter_frame_initial_sp_offset,
 #endif // CC_INTERP
     // Entry frames
 #ifdef _LP64
     entry_frame_call_wrapper_offset                  =  -9,
 #else
     entry_frame_call_wrapper_offset                  =  2,
 #endif // AMD64
     // Native frames
     native_frame_initial_param_offset                =  2
   };
   intptr_t ptr_at(int offset) const {
     return *ptr_at_addr(offset);
   }
   void ptr_at_put(int offset, intptr_t value) {
     *ptr_at_addr(offset) = value;
   }
  private:
   // an additional field beyond _sp and _pc:
   intptr_t*   _fp; // frame pointer
   // The interpreter and adapters will extend the frame of the caller.
   // Since oopMaps are based on the sp of the caller before extension
   // we need to know that value. However in order to compute the address
   // of the return address we need the real "raw" sp. Since sparc already
   // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's
   // original sp we use that convention.
   intptr_t*     _unextended_sp;
   void adjust_unextended_sp();
   intptr_t* ptr_at_addr(int offset) const {
     return (intptr_t*) addr_at(offset);
   }
 #ifdef ASSERT
   // Used in frame::sender_for_{interpreter,compiled}_frame
     static void verify_deopt_original_pc(   nmethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false);
   static void verify_deopt_mh_original_pc(nmethod* nm, intptr_t* unextended_sp) {
     verify_deopt_original_pc(nm, unextended_sp, true);
   }
 #endif
  public:
   // Constructors
   frame(intptr_t* sp, intptr_t* fp, address pc);
   frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc);
   frame(intptr_t* sp, intptr_t* fp);
   // accessors for the instance variables
   intptr_t*   fp() const { return _fp; }
   inline address* sender_pc_addr() const;
   // return address of param, zero origin index.
   inline address* native_param_addr(int idx) const;
   // expression stack tos if we are nested in a java call
   intptr_t* interpreter_frame_last_sp() const;
 #ifndef CC_INTERP
   // deoptimization support
   void interpreter_frame_set_last_sp(intptr_t* sp);
 #endif // CC_INTERP
 #ifdef CC_INTERP
   inline interpreterState get_interpreterState() const;
 #endif // CC_INTERP
 #endif // CPU_MIPS_VM_FRAME_MIPS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/mips/vm/frame_mips.hpp@d885f8d65c58 (annotated)

src/cpu/mips/vm/frame_mips.hpp