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/*
* Copyright (C) 2017-2024 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 "WasmIndexOrName.h"
#include <wtf/PrintStream.h>
#include <wtf/text/MakeString.h>
namespace JSC { namespace Wasm {
IndexOrName::IndexOrName(Index index, std::pair<const Name*, RefPtr<NameSection>>&& name)
{
#if USE(JSVALUE64)
static_assert(sizeof(m_indexName.index) == sizeof(m_indexName.name), "bit-tagging depends on sizes being equal");
ASSERT(!(index & allTags));
ASSERT(!(std::bit_cast<Index>(name.first) & allTags));
if (name.first)
m_indexName.name = name.first;
else
m_indexName.index = indexTag | index;
#elif USE(JSVALUE32_64)
if (name.first) {
m_indexName.name = name.first;
m_kind = Kind::Name;
} else {
m_indexName.index = index;
m_kind = Kind::Index;
}
#endif
m_nameSection = WTFMove(name.second);
}
void IndexOrName::dump(PrintStream& out) const
{
if (isEmpty() || !nameSection()) {
out.print("wasm-stub"_s);
if (isIndex())
out.print('[', index(), ']');
return;
}
auto moduleName = nameSection()->moduleName.size() ? nameSection()->moduleName.span() : nameSection()->moduleHash.span();
if (isIndex())
out.print(moduleName, ".wasm-function["_s, index(), "]");
else
out.print(moduleName, ".wasm-function["_s, name()->span(), "]");
}
String makeString(const IndexOrName& ion)
{
if (ion.isEmpty() || !ion.nameSection()) {
if (ion.isIndex())
return makeString("wasm-stub["_s, ion.index(), "]"_s);
return "wasm-stub"_s;
}
auto moduleName = ion.nameSection()->moduleName.size() ? ion.nameSection()->moduleName.span() : ion.nameSection()->moduleHash.span();
if (ion.isIndex())
return makeString(moduleName, ".wasm-function["_s, ion.index(), ']');
return makeString(moduleName, ".wasm-function["_s, ion.name()->span(), ']');
}
} } // namespace JSC::Wasm
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