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/*
* Copyright (C) 2016 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 "JSWebAssembly.h"
#if ENABLE(WEBASSEMBLY)
#include "Exception.h"
#include "FunctionPrototype.h"
#include "JSCInlines.h"
#include "JSPromiseDeferred.h"
#include "JSWebAssemblyHelpers.h"
#include "WasmPlan.h"
#include "WebAssemblyModuleConstructor.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(JSWebAssembly);
EncodedJSValue JSC_HOST_CALL webAssemblyValidateFunc(ExecState*);
EncodedJSValue JSC_HOST_CALL webAssemblyCompileFunc(ExecState*);
EncodedJSValue JSC_HOST_CALL webAssemblyCompileFunc(ExecState* exec)
{
VM& vm = exec->vm();
auto catchScope = DECLARE_CATCH_SCOPE(vm);
JSPromiseDeferred* promise = JSPromiseDeferred::create(exec, exec->lexicalGlobalObject());
RETURN_IF_EXCEPTION(catchScope, encodedJSValue());
// FIXME: Make this truly asynchronous:
// https://bugs.webkit.org/show_bug.cgi?id=166016
JSValue module = WebAssemblyModuleConstructor::createModule(exec, exec->lexicalGlobalObject()->WebAssemblyModuleStructure());
if (Exception* exception = catchScope.exception()) {
catchScope.clearException();
promise->reject(exec, exception->value());
return JSValue::encode(promise->promise());
}
promise->resolve(exec, module);
return JSValue::encode(promise->promise());
}
EncodedJSValue JSC_HOST_CALL webAssemblyValidateFunc(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
size_t byteOffset;
size_t byteSize;
uint8_t* base = getWasmBufferFromValue(exec, exec->argument(0), byteOffset, byteSize);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
Wasm::Plan plan(&vm, base + byteOffset, byteSize);
// FIXME: We might want to throw an OOM exception here if we detect that something will OOM.
// https://bugs.webkit.org/show_bug.cgi?id=166015
return JSValue::encode(jsBoolean(plan.parseAndValidateModule()));
}
const ClassInfo JSWebAssembly::s_info = { "WebAssembly", &Base::s_info, 0, CREATE_METHOD_TABLE(JSWebAssembly) };
JSWebAssembly* JSWebAssembly::create(VM& vm, JSGlobalObject* globalObject, Structure* structure)
{
auto* object = new (NotNull, allocateCell<JSWebAssembly>(vm.heap)) JSWebAssembly(vm, structure);
object->finishCreation(vm, globalObject);
return object;
}
Structure* JSWebAssembly::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
void JSWebAssembly::finishCreation(VM& vm, JSGlobalObject* globalObject)
{
Base::finishCreation(vm);
ASSERT(inherits(vm, info()));
JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION("validate", webAssemblyValidateFunc, DontEnum, 1);
JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION("compile", webAssemblyCompileFunc, DontEnum, 1);
}
JSWebAssembly::JSWebAssembly(VM& vm, Structure* structure)
: JSNonFinalObject(vm, structure)
{
}
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)
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