1 /*
   2  * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
   3  * Copyright 2007, 2008, 2009 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 // A frame represents a physical stack frame on the Zero stack.
  27 
  28  public:
  29   enum {
  30     pc_return_offset = 0
  31   };
  32 
  33   // Constructor
  34  public:
  35   frame(intptr_t* sp, intptr_t* fp);
  36 
  37   // The sp of a Zero frame is the address of the highest word in
  38   // that frame.  We keep track of the lowest address too, so the
  39   // boundaries of the frame are available for debug printing.
  40  private:
  41   intptr_t* _fp;
  42 
  43  public:
  44   intptr_t* fp() const {
  45     return _fp;
  46   }
  47 
  48 #ifdef CC_INTERP
  49   inline interpreterState get_interpreterState() const;
  50 #endif // CC_INTERP
  51 
  52  public:
  53   const ZeroFrame *zeroframe() const {
  54     return (ZeroFrame *) sp();
  55   }
  56 
  57   const EntryFrame *zero_entryframe() const {
  58     return zeroframe()->as_entry_frame();
  59   }
  60   const InterpreterFrame *zero_interpreterframe() const {
  61     return zeroframe()->as_interpreter_frame();
  62   }
  63   const SharkFrame *zero_sharkframe() const {
  64     return zeroframe()->as_shark_frame();
  65   }
  66 
  67  public:
  68   frame sender_for_nonentry_frame(RegisterMap* map) const;
  69 
  70  public:
  71   void zero_print_on_error(int           index,
  72                            outputStream* st,
  73                            char*         buf,
  74                            int           buflen) const;