pcDesc.cpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25# include "incls/_precompiled.incl"
26# include "incls/_pcDesc.cpp.incl"
27
28PcDesc::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
36address PcDesc::real_pc(const nmethod* code) const {
37  return code->instructions_begin() + pc_offset();
38}
39
40void 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    tty->cr();
58  }
59#endif
60}
61
62bool PcDesc::verify(nmethod* code) {
63  //Unimplemented();
64  return true;
65}
66