location.cpp revision 0:a61af66fc99e 
1/*
2 * Copyright 1997-2006 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/_location.cpp.incl"
27
28void Location::print_on(outputStream* st) const {
29  if(type() == invalid && !legal_offset_in_bytes(offset() * BytesPerInt)) {
30    // product of Location::invalid_loc() or Location::Location().
31    switch (where()) {
32    case on_stack:     st->print("empty");    break;
33    case in_register:  st->print("invalid");  break;
34    }
35    return;
36  }
37  switch (where()) {
38  case on_stack:    st->print("stack[%d]", stack_offset());    break;
39  case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
40  default:          st->print("Wrong location where %d", where());
41  }
42  switch (type()) {
43  case normal:                                 break;
44  case oop:          st->print(",oop");        break;
45  case int_in_long:  st->print(",int");        break;
46  case lng:          st->print(",long");       break;
47  case float_in_dbl: st->print(",float");      break;
48  case dbl:          st->print(",double");     break;
49  case addr:         st->print(",address");    break;
50  default:           st->print("Wrong location type %d", type());
51  }
52}
53
54
55Location::Location(DebugInfoReadStream* stream) {
56  _value = (uint16_t) stream->read_int();
57}
58
59
60void Location::write_on(DebugInfoWriteStream* stream) {
61  stream->write_int(_value & 0x0000FFFF);
62}
63
64
65// Valid argument to Location::new_stk_loc()?
66bool Location::legal_offset_in_bytes(int offset_in_bytes) {
67  if ((offset_in_bytes % BytesPerInt) != 0)  return false;
68  return (offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
69}
70