1/*
2 * Copyright (c) 1997, 2019, 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 "precompiled.hpp"
26#include "code/debugInfoRec.hpp"
27#include "code/nmethod.hpp"
28#include "code/pcDesc.hpp"
29#include "code/scopeDesc.hpp"
30#include "memory/resourceArea.hpp"
31
32PcDesc::PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset) {
33 _pc_offset = pc_offset;
34 _scope_decode_offset = scope_decode_offset;
35 _obj_decode_offset = obj_decode_offset;
36 _flags = 0;
37}
38
39address PcDesc::real_pc(const CompiledMethod* code) const {
40 return code->code_begin() + pc_offset();
41}
42
43void PcDesc::print_on(outputStream* st, CompiledMethod* code) {
44#ifndef PRODUCT
45 ResourceMark rm;
46 st->print("PcDesc(pc=" PTR_FORMAT " offset=%x bits=%x):", p2i(real_pc(code)), pc_offset(), _flags);
47
48 if (scope_decode_offset() == DebugInformationRecorder::serialized_null) {
49 st->cr();
50 return;
51 }
52
53 int tab = 8;
54 int pos = st->position() + 2; // current column plus two spaces
55 pos = ((pos+tab-1)/tab)*tab;
56
57 for (ScopeDesc* sd = code->scope_desc_at(real_pc(code));
58 sd != NULL;
59 sd = sd->sender()) {
60 sd->print_on(st);
61 }
62#endif
63}
64
65bool PcDesc::verify(CompiledMethod* code) {
66 //Unimplemented();
67 return true;
68}
69