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/*
* Copyright (C) 2017-2021 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 "JSWebAssemblyCodeBlock.h"
#if ENABLE(WEBASSEMBLY)
#include "JSCJSValueInlines.h"
#include "JSCellInlines.h"
#include "WasmModuleInformation.h"
#include "WasmToJS.h"
namespace JSC {
const ClassInfo JSWebAssemblyCodeBlock::s_info = { "WebAssemblyCodeBlock", nullptr, nullptr, nullptr, CREATE_METHOD_TABLE(JSWebAssemblyCodeBlock) };
JSWebAssemblyCodeBlock* JSWebAssemblyCodeBlock::create(VM& vm, Ref<Wasm::CodeBlock> codeBlock, const Wasm::ModuleInformation& moduleInformation)
{
auto* result = new (NotNull, allocateCell<JSWebAssemblyCodeBlock>(vm)) JSWebAssemblyCodeBlock(vm, WTFMove(codeBlock), moduleInformation);
result->finishCreation(vm);
return result;
}
JSWebAssemblyCodeBlock::JSWebAssemblyCodeBlock(VM& vm, Ref<Wasm::CodeBlock>&& codeBlock, const Wasm::ModuleInformation& moduleInformation)
: Base(vm, vm.webAssemblyCodeBlockStructure.get())
, m_codeBlock(WTFMove(codeBlock))
{
// FIXME: We should not need to do this synchronously.
// https://bugs.webkit.org/show_bug.cgi?id=170567
m_wasmToJSExitStubs.reserveCapacity(m_codeBlock->functionImportCount());
for (unsigned importIndex = 0; importIndex < m_codeBlock->functionImportCount(); ++importIndex) {
Wasm::SignatureIndex signatureIndex = moduleInformation.importFunctionSignatureIndices.at(importIndex);
auto binding = Wasm::wasmToJS(vm, m_callLinkInfos, signatureIndex, importIndex);
if (UNLIKELY(!binding)) {
switch (binding.error()) {
case Wasm::BindingFailure::OutOfMemory:
m_errorMessage = "Out of executable memory"_s;
return;
}
RELEASE_ASSERT_NOT_REACHED();
}
m_wasmToJSExitStubs.uncheckedAppend(binding.value());
}
}
void JSWebAssemblyCodeBlock::finishCreation(VM& vm)
{
Base::finishCreation(vm);
}
void JSWebAssemblyCodeBlock::destroy(JSCell* cell)
{
static_cast<JSWebAssemblyCodeBlock*>(cell)->JSWebAssemblyCodeBlock::~JSWebAssemblyCodeBlock();
}
void JSWebAssemblyCodeBlock::clearJSCallICs(VM& vm)
{
for (auto iter = m_callLinkInfos.begin(); !!iter; ++iter)
(*iter)->unlink(vm);
}
template<typename Visitor>
void JSWebAssemblyCodeBlock::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
JSWebAssemblyCodeBlock* thisObject = jsCast<JSWebAssemblyCodeBlock*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
}
DEFINE_VISIT_CHILDREN(JSWebAssemblyCodeBlock);
void JSWebAssemblyCodeBlock::finalizeUnconditionally(VM& vm)
{
for (auto iter = m_callLinkInfos.begin(); !!iter; ++iter)
(*iter)->visitWeak(vm);
}
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)