1 #ifdef USE_PRAGMA_IDENT_SRC
   2 #pragma ident "@(#)location.cpp 1.40 07/05/05 17:05:21 JVM"
   3 #endif
   4 /*
   5  * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This code is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License version 2 only, as
  10  * published by the Free Software Foundation.
  11  *
  12  * This code is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * version 2 for more details (a copy is included in the LICENSE file that
  16  * accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License version
  19  * 2 along with this work; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *  
  26  */
  27 
  28 #include "incls/_precompiled.incl"
  29 #include "incls/_location.cpp.incl"
  30 
  31 void Location::print_on(outputStream* st) const {
  32   if(type() == invalid) {
  33     // product of Location::invalid_loc() or Location::Location().
  34     switch (where()) {
  35     case on_stack:     st->print("empty");    break;
  36     case in_register:  st->print("invalid");  break;
  37     }
  38     return;
  39   }
  40   switch (where()) {
  41   case on_stack:    st->print("stack[%d]", stack_offset());    break;
  42   case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
  43   default:          st->print("Wrong location where %d", where());
  44   }
  45   switch (type()) {
  46   case normal:                                 break;
  47   case oop:          st->print(",oop");        break;
  48   case narrowoop:    st->print(",narrowoop");  break;
  49   case int_in_long:  st->print(",int");        break;
  50   case lng:          st->print(",long");       break;
  51   case float_in_dbl: st->print(",float");      break;
  52   case dbl:          st->print(",double");     break;
  53   case addr:         st->print(",address");    break;
  54   default:           st->print("Wrong location type %d", type());
  55   }
  56 }
  57 
  58 
  59 Location::Location(DebugInfoReadStream* stream) {
  60   _value = (juint) stream->read_int();
  61 }
  62 
  63 
  64 void Location::write_on(DebugInfoWriteStream* stream) {
  65   stream->write_int(_value);
  66 }
  67 
  68 
  69 // Valid argument to Location::new_stk_loc()?
  70 bool Location::legal_offset_in_bytes(int offset_in_bytes) {
  71   if ((offset_in_bytes % BytesPerInt) != 0)  return false;
  72   return (juint)(offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
  73 }
  74