1 /*
   2  * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_pcDesc.cpp.incl"
  27 
  28 PcDesc::PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset) {
  29   assert(sizeof(PcDescFlags) <= 4, "occupies more than a word");
  30   _pc_offset           = pc_offset;
  31   _scope_decode_offset = scope_decode_offset;
  32   _obj_decode_offset   = obj_decode_offset;
  33   _flags.word          = 0;
  34 }
  35 
  36 address PcDesc::real_pc(const nmethod* code) const {
  37   return code->instructions_begin() + pc_offset();
  38 }
  39 
  40 void PcDesc::print(nmethod* code) {
  41 #ifndef PRODUCT
  42   ResourceMark rm;
  43   tty->print_cr("PcDesc(pc=0x%lx offset=%x):", real_pc(code), pc_offset());
  44 
  45   if (scope_decode_offset() == DebugInformationRecorder::serialized_null) {
  46     return;
  47   }
  48 
  49   for (ScopeDesc* sd = code->scope_desc_at(real_pc(code));
  50        sd != NULL;
  51        sd = sd->sender()) {
  52     tty->print("  ");
  53     sd->method()->print_short_name(tty);
  54     tty->print("  @%d", sd->bci());
  55     if (sd->should_reexecute())
  56       tty->print("  reexecute=true");
  57     if (sd->return_oop())
  58       tty->print("  return_oop=true");
  59     tty->cr();
  60   }
  61 #endif
  62 }
  63 
  64 bool PcDesc::verify(nmethod* code) {
  65   //Unimplemented();
  66   return true;
  67 }