1/*
2 * Copyright (c) 2017, 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#ifndef SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
26#define SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
27
28#include "code/compiledMethod.hpp"
29#include "code/nativeInst.hpp"
30#include "runtime/frame.hpp"
31#include "runtime/orderAccess.hpp"
32
33inline bool CompiledMethod::is_deopt_pc(address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); }
34
35// When using JVMCI the address might be off by the size of a call instruction.
36inline bool CompiledMethod::is_deopt_entry(address pc) {
37 return pc == deopt_handler_begin()
38#if INCLUDE_JVMCI
39 || (is_compiled_by_jvmci() && pc == (deopt_handler_begin() + NativeCall::instruction_size))
40#endif
41 ;
42}
43
44// -----------------------------------------------------------------------------
45// CompiledMethod::get_deopt_original_pc
46//
47// Return the original PC for the given PC if:
48// (a) the given PC belongs to a nmethod and
49// (b) it is a deopt PC
50
51inline address CompiledMethod::get_deopt_original_pc(const frame* fr) {
52 if (fr->cb() == NULL) return NULL;
53
54 CompiledMethod* cm = fr->cb()->as_compiled_method_or_null();
55 if (cm != NULL && cm->is_deopt_pc(fr->pc()))
56 return cm->get_original_pc(fr);
57
58 return NULL;
59}
60
61
62// class ExceptionCache methods
63
64inline int ExceptionCache::count() { return OrderAccess::load_acquire(&_count); }
65
66address ExceptionCache::pc_at(int index) {
67 assert(index >= 0 && index < count(),"");
68 return _pc[index];
69}
70
71address ExceptionCache::handler_at(int index) {
72 assert(index >= 0 && index < count(),"");
73 return _handler[index];
74}
75
76// increment_count is only called under lock, but there may be concurrent readers.
77inline void ExceptionCache::increment_count() { OrderAccess::release_store(&_count, _count + 1); }
78
79
80#endif // SHARE_CODE_COMPILEDMETHOD_INLINE_HPP
81