1/*
2 * Copyright (C) 2017 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 "WasmIndexOrName.h"
28
29namespace JSC { namespace Wasm {
30
31IndexOrName::IndexOrName(Index index, std::pair<const Name*, RefPtr<NameSection>>&& name)
32{
33 static_assert(sizeof(m_indexName.index) == sizeof(m_indexName.name), "bit-tagging depends on sizes being equal");
34
35 if ((index & allTags) || (bitwise_cast<Index>(name.first) & allTags))
36 *this = IndexOrName();
37 else {
38 if (name.first)
39 m_indexName.name = name.first;
40 else
41 m_indexName.index = indexTag | index;
42 }
43 m_nameSection = WTFMove(name.second);
44}
45
46String makeString(const IndexOrName& ion)
47{
48 if (ion.isEmpty())
49 return "wasm-stub"_s;
50 const String moduleName = ion.nameSection()->moduleName.size() ? String(ion.nameSection()->moduleName.data(), ion.nameSection()->moduleName.size()) : String(ion.nameSection()->moduleHash.data(), ion.nameSection()->moduleHash.size());
51 if (ion.isIndex())
52 return makeString(moduleName, ".wasm-function[", String::number(ion.m_indexName.index & ~IndexOrName::indexTag), ']');
53 return makeString(moduleName, ".wasm-function[", String(ion.m_indexName.name->data(), ion.m_indexName.name->size()), ']');
54}
55
56} } // namespace JSC::Wasm
57