1/*
2 * Copyright (c) 1997, 2018, 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/debugInfo.hpp"
27#include "code/location.hpp"
28#include "runtime/handles.inline.hpp"
29
30void Location::print_on(outputStream* st) const {
31 if(type() == invalid) {
32 // product of Location::invalid_loc() or Location::Location().
33 switch (where()) {
34 case on_stack: st->print("empty"); break;
35 case in_register: st->print("invalid"); break;
36 }
37 return;
38 }
39 switch (where()) {
40 case on_stack: st->print("stack[%d]", stack_offset()); break;
41 case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
42 default: st->print("Wrong location where %d", where());
43 }
44 switch (type()) {
45 case normal: break;
46 case oop: st->print(",oop"); break;
47 case narrowoop: st->print(",narrowoop"); break;
48 case int_in_long: st->print(",int"); break;
49 case lng: st->print(",long"); break;
50 case float_in_dbl: st->print(",float"); break;
51 case dbl: st->print(",double"); break;
52 case addr: st->print(",address"); break;
53 default: st->print("Wrong location type %d", type());
54 }
55}
56
57
58Location::Location(DebugInfoReadStream* stream) {
59 _value = (juint) stream->read_int();
60}
61
62
63void Location::write_on(DebugInfoWriteStream* stream) {
64 stream->write_int(_value);
65}
66
67
68// Valid argument to Location::new_stk_loc()?
69bool Location::legal_offset_in_bytes(int offset_in_bytes) {
70 if ((offset_in_bytes % BytesPerInt) != 0) return false;
71 return (juint)(offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
72}
73