hotspot/src/cpu/zero/vm/entryFrame_zero.hpp
changeset 4013 b154310845de
child 5335 4319cb12ddfe
equal deleted inserted replaced
4012:579b7bad9983 4013:b154310845de
       
     1 /*
       
     2  * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
       
     3  * Copyright 2008 Red Hat, Inc.
       
     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     5  *
       
     6  * This code is free software; you can redistribute it and/or modify it
       
     7  * under the terms of the GNU General Public License version 2 only, as
       
     8  * published by the Free Software Foundation.
       
     9  *
       
    10  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    13  * version 2 for more details (a copy is included in the LICENSE file that
       
    14  * accompanied this code).
       
    15  *
       
    16  * You should have received a copy of the GNU General Public License version
       
    17  * 2 along with this work; if not, write to the Free Software Foundation,
       
    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    19  *
       
    20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
       
    21  * CA 95054 USA or visit www.sun.com if you need additional information or
       
    22  * have any questions.
       
    23  *
       
    24  */
       
    25 
       
    26 // |  ...               |
       
    27 // +--------------------+  ------------------
       
    28 // | parameter n-1      |       low addresses
       
    29 // |  ...               |
       
    30 // | parameter 0        |
       
    31 // | call_wrapper       |
       
    32 // | frame_type         |
       
    33 // | next_frame         |      high addresses
       
    34 // +--------------------+  ------------------
       
    35 // |  ...               |
       
    36 
       
    37 class EntryFrame : public ZeroFrame {
       
    38  private:
       
    39   EntryFrame() : ZeroFrame() {
       
    40     ShouldNotCallThis();
       
    41   }
       
    42 
       
    43  protected:
       
    44   enum Layout {
       
    45     call_wrapper_off = jf_header_words,
       
    46     header_words
       
    47   };
       
    48 
       
    49  public:
       
    50   static EntryFrame *build(ZeroStack*       stack,
       
    51                            const intptr_t*  parameters,
       
    52                            int              parameter_words,
       
    53                            JavaCallWrapper* call_wrapper);
       
    54  public:
       
    55   JavaCallWrapper *call_wrapper() const {
       
    56     return (JavaCallWrapper *) value_of_word(call_wrapper_off);
       
    57   }
       
    58 
       
    59  public:
       
    60   void identify_word(int   frame_index,
       
    61                      int   offset,
       
    62                      char* fieldbuf,
       
    63                      char* valuebuf,
       
    64                      int   buflen) const;
       
    65 };