mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
123 lines
4.3 KiB
C++
123 lines
4.3 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "WasmGlobal.h"
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#if ENABLE(WEBASSEMBLY)
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#include "JSCJSValueInlines.h"
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#include "JSWebAssemblyHelpers.h"
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#include "JSWebAssemblyRuntimeError.h"
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#include <wtf/StdLibExtras.h>
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namespace JSC { namespace Wasm {
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JSValue Global::get(JSGlobalObject* globalObject) const
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{
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switch (m_type) {
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case Wasm::Type::I32:
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return jsNumber(bitwise_cast<int32_t>(static_cast<uint32_t>(m_value.m_primitive)));
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case Wasm::Type::I64:
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return JSBigInt::makeHeapBigIntOrBigInt32(globalObject, static_cast<int64_t>(m_value.m_primitive));
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case Wasm::Type::F32:
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return jsNumber(purifyNaN(static_cast<double>(bitwise_cast<float>(static_cast<uint32_t>(m_value.m_primitive)))));
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case Wasm::Type::F64:
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return jsNumber(purifyNaN(bitwise_cast<double>(m_value.m_primitive)));
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case Wasm::Externref:
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case Wasm::Funcref:
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return m_value.m_externref.get();
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default:
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return jsUndefined();
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}
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}
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void Global::set(JSGlobalObject* globalObject, JSValue argument)
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{
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VM& vm = globalObject->vm();
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auto throwScope = DECLARE_THROW_SCOPE(vm);
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ASSERT(m_mutability != Wasm::GlobalInformation::Immutable);
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switch (m_type) {
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case Wasm::Type::I32: {
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int32_t value = argument.toInt32(globalObject);
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RETURN_IF_EXCEPTION(throwScope, void());
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m_value.m_primitive = static_cast<uint64_t>(static_cast<uint32_t>(value));
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break;
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}
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case Wasm::Type::I64: {
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int64_t value = argument.toBigInt64(globalObject);
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RETURN_IF_EXCEPTION(throwScope, void());
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m_value.m_primitive = static_cast<uint64_t>(value);
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break;
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}
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case Wasm::Type::F32: {
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float value = argument.toFloat(globalObject);
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RETURN_IF_EXCEPTION(throwScope, void());
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m_value.m_primitive = static_cast<uint64_t>(bitwise_cast<uint32_t>(value));
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break;
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}
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case Wasm::Type::F64: {
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double value = argument.toNumber(globalObject);
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RETURN_IF_EXCEPTION(throwScope, void());
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m_value.m_primitive = bitwise_cast<uint64_t>(value);
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break;
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}
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case Wasm::Externref: {
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RELEASE_ASSERT(m_owner);
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m_value.m_externref.set(m_owner->vm(), m_owner, argument);
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break;
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}
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case Wasm::Funcref: {
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RELEASE_ASSERT(m_owner);
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if (!isWebAssemblyHostFunction(vm, argument) && !argument.isNull()) {
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throwException(globalObject, throwScope, createJSWebAssemblyRuntimeError(globalObject, vm, "Funcref must be an exported wasm function"));
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return;
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}
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m_value.m_externref.set(m_owner->vm(), m_owner, argument);
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break;
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}
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default:
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break;
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}
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}
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void Global::visitAggregate(SlotVisitor& visitor)
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{
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switch (m_type) {
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case Wasm::Type::Externref:
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case Wasm::Type::Funcref: {
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RELEASE_ASSERT(m_owner);
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visitor.append(m_value.m_externref);
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break;
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}
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default:
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break;
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}
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}
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} } // namespace JSC::Global
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#endif // ENABLE(WEBASSEMBLY)
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