1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* Copyright (C) 2018-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <wtf/PtrTag.h>
#include <wtf/WTFConfig.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace WTF {
#if CPU(ARM64E) && ENABLE(PTRTAG_DEBUGGING)
const char* tagForPtr(const void* ptr)
{
PtrTagLookup* lookup = g_wtfConfig.ptrTagLookupHead;
while (lookup) {
const char* tagName = lookup->tagForPtr(ptr);
if (tagName)
return tagName;
lookup = lookup->next;
}
if (ptr == removeCodePtrTag(ptr))
return "NoPtrTag";
#define RETURN_NAME_IF_TAG_MATCHES(tag) \
if (ptr == tagCodePtrImpl<PtrTagAction::NoAssert, tag>(removeCodePtrTag(ptr))) \
return #tag;
FOR_EACH_WTF_PTRTAG(RETURN_NAME_IF_TAG_MATCHES)
#undef RETURN_NAME_IF_TAG_MATCHES
return "<unknown PtrTag>";
}
const char* ptrTagName(PtrTag tag)
{
PtrTagLookup* lookup = g_wtfConfig.ptrTagLookupHead;
while (lookup) {
const char* tagName = lookup->ptrTagName(tag);
if (tagName)
return tagName;
lookup = lookup->next;
}
#define RETURN_WTF_PTRTAG_NAME(_tagName) case _tagName: return #_tagName;
switch (tag) {
FOR_EACH_WTF_PTRTAG(RETURN_WTF_PTRTAG_NAME)
default: return "<unknown>";
}
#undef RETURN_WTF_PTRTAG_NAME
}
void registerPtrTagLookup(PtrTagLookup* lookup)
{
lookup->next = g_wtfConfig.ptrTagLookupHead;
g_wtfConfig.ptrTagLookupHead = lookup;
}
void reportBadTag(const void* ptr, PtrTag expectedTag)
{
dataLog("PtrTag ASSERTION FAILED on pointer ", RawPointer(ptr), ", actual tag = ", tagForPtr(ptr));
if (expectedTag == AnyPtrTag)
dataLogLn(", expected any tag but NoPtrTag");
else
dataLogLn(", expected tag = ", ptrTagName(expectedTag));
}
#endif // CPU(ARM64E) && ENABLE(PTRTAG_DEBUGGING)
} // namespace WTF
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
|
