1/*
2 * Copyright (C) 2018-2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "JSCPtrTag.h"
28
29namespace JSC {
30
31#if CPU(ARM64E)
32
33static const char* tagForPtr(const void* ptr)
34{
35#define RETURN_NAME_IF_TAG_MATCHES(tag) \
36 if (WTF::untagCodePtrImpl<WTF::PtrTagAction::NoAssert>(ptr, JSC::tag) == removeCodePtrTag(ptr)) \
37 return #tag;
38 FOR_EACH_JSC_PTRTAG(RETURN_NAME_IF_TAG_MATCHES)
39#undef RETURN_NAME_IF_TAG_MATCHES
40 return nullptr; // Matching tag not found.
41}
42
43static const char* ptrTagName(PtrTag tag)
44{
45#define RETURN_PTRTAG_NAME(_tagName) case _tagName: return #_tagName;
46 switch (static_cast<unsigned>(tag)) {
47 FOR_EACH_JSC_PTRTAG(RETURN_PTRTAG_NAME)
48 }
49#undef RETURN_PTRTAG_NAME
50 return nullptr; // Matching tag not found.
51}
52
53void initializePtrTagLookup()
54{
55 static WTF::PtrTagLookup lookup = { tagForPtr, ptrTagName };
56 WTF::registerPtrTagLookup(&lookup);
57}
58
59#endif // CPU(ARM64E)
60
61} // namespace JSC
62