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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 "JSDocument.h"
#if ENABLE(JIT)
#include "DOMJITAbstractHeapRepository.h"
#include "DOMJITCheckDOM.h"
#include "DOMJITHelpers.h"
#include "Document.h"
#include "JSDOMWrapper.h"
#include "JSElement.h"
#include "JSHTMLElement.h"
#include <JavaScriptCore/Snippet.h>
#include <JavaScriptCore/SnippetParams.h>
IGNORE_WARNINGS_BEGIN("frame-address");
namespace WebCore {
using namespace JSC;
Ref<JSC::Snippet> checkSubClassSnippetForJSDocument()
{
return DOMJIT::checkDOM<Document>();
}
Ref<JSC::DOMJIT::CallDOMGetterSnippet> compileDocumentDocumentElementAttribute()
{
Ref<JSC::DOMJIT::CallDOMGetterSnippet> snippet = JSC::DOMJIT::CallDOMGetterSnippet::create();
snippet->numGPScratchRegisters = 1;
snippet->setGenerator([=](CCallHelpers& jit, JSC::SnippetParams& params) {
JSValueRegs result = params[0].jsValueRegs();
GPRReg document = params[1].gpr();
GPRReg globalObject = params[2].gpr();
JSValue globalObjectValue = params[2].value();
GPRReg scratch = params.gpScratch(0);
jit.loadPtr(CCallHelpers::Address(document, JSDocument::offsetOfWrapped()), scratch);
static_assert(!JSDocument::hasCustomPtrTraits(), "Optimized JSDocument wrapper access should not be using RawPtrTraits");
DOMJIT::loadDocumentElement(jit, scratch, scratch);
auto nullCase = jit.branchTestPtr(CCallHelpers::Zero, scratch);
DOMJIT::toWrapper<Element>(jit, params, scratch, globalObject, result, DOMJIT::operationToJSElement, globalObjectValue);
auto done = jit.jump();
nullCase.link(&jit);
jit.moveValue(jsNull(), result);
done.link(&jit);
return CCallHelpers::JumpList();
});
snippet->effect = JSC::DOMJIT::Effect::forDef(DOMJIT::AbstractHeapRepository::Document_documentElement);
return snippet;
}
static void loadLocalName(CCallHelpers& jit, GPRReg htmlElement, GPRReg localNameImpl)
{
jit.loadPtr(CCallHelpers::Address(htmlElement, Element::tagQNameMemoryOffset() + QualifiedName::implMemoryOffset()), localNameImpl);
jit.loadPtr(CCallHelpers::Address(localNameImpl, QualifiedName::QualifiedNameImpl::localNameMemoryOffset()), localNameImpl);
}
Ref<JSC::DOMJIT::CallDOMGetterSnippet> compileDocumentBodyAttribute()
{
Ref<JSC::DOMJIT::CallDOMGetterSnippet> snippet = JSC::DOMJIT::CallDOMGetterSnippet::create();
snippet->numGPScratchRegisters = 2;
snippet->setGenerator([=](CCallHelpers& jit, JSC::SnippetParams& params) {
JSValueRegs result = params[0].jsValueRegs();
GPRReg document = params[1].gpr();
GPRReg globalObject = params[2].gpr();
JSValue globalObjectValue = params[2].value();
GPRReg scratch1 = params.gpScratch(0);
GPRReg scratch2 = params.gpScratch(1);
jit.loadPtr(CCallHelpers::Address(document, JSDocument::offsetOfWrapped()), scratch1);
static_assert(!JSDocument::hasCustomPtrTraits(), "Optimized JSDocument wrapper access should not be using RawPtrTraits");
DOMJIT::loadDocumentElement(jit, scratch1, scratch1);
CCallHelpers::JumpList nullCases;
CCallHelpers::JumpList successCases;
nullCases.append(jit.branchTestPtr(CCallHelpers::Zero, scratch1));
nullCases.append(DOMJIT::branchTestIsHTMLFlagOnNode(jit, CCallHelpers::Zero, scratch1));
// We ensured that the name of the given element is HTML qualified.
// It allows us to perform local name comparison!
loadLocalName(jit, scratch1, scratch2);
nullCases.append(jit.branchPtr(CCallHelpers::NotEqual, scratch2, CCallHelpers::TrustedImmPtr(HTMLNames::htmlTag->localName().impl())));
RELEASE_ASSERT(!CAST_OFFSET(Node*, ContainerNode*));
RELEASE_ASSERT(!CAST_OFFSET(Node*, Element*));
RELEASE_ASSERT(!CAST_OFFSET(Node*, HTMLElement*));
// Node* node = current.firstChild();
// while (node && !is<HTMLElement>(*node))
// node = node->nextSibling();
// return downcast<HTMLElement>(node);
jit.loadPtr(CCallHelpers::Address(scratch1, ContainerNode::firstChildMemoryOffset()), scratch1);
CCallHelpers::Label loopStart = jit.label();
nullCases.append(jit.branchTestPtr(CCallHelpers::Zero, scratch1));
auto notHTMLElementCase = DOMJIT::branchTestIsHTMLFlagOnNode(jit, CCallHelpers::Zero, scratch1);
// We ensured that the name of the given element is HTML qualified.
// It allows us to perform local name comparison!
loadLocalName(jit, scratch1, scratch2);
successCases.append(jit.branchPtr(CCallHelpers::Equal, scratch2, CCallHelpers::TrustedImmPtr(HTMLNames::bodyTag->localName().impl())));
successCases.append(jit.branchPtr(CCallHelpers::Equal, scratch2, CCallHelpers::TrustedImmPtr(HTMLNames::framesetTag->localName().impl())));
notHTMLElementCase.link(&jit);
jit.loadPtr(CCallHelpers::Address(scratch1, Node::nextSiblingMemoryOffset()), scratch1);
jit.jump().linkTo(loopStart, &jit);
successCases.link(&jit);
DOMJIT::toWrapper<HTMLElement>(jit, params, scratch1, globalObject, result, DOMJIT::operationToJSHTMLElement, globalObjectValue);
auto done = jit.jump();
nullCases.link(&jit);
jit.moveValue(jsNull(), result);
done.link(&jit);
return CCallHelpers::JumpList();
});
snippet->effect = JSC::DOMJIT::Effect::forDef(DOMJIT::AbstractHeapRepository::Document_body);
return snippet;
}
namespace DOMJIT {
JSC_DEFINE_JIT_OPERATION(operationToJSElement, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
{
ASSERT(result);
ASSERT(globalObject);
JSC::VM& vm = globalObject->vm();
JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
return DOMJIT::toWrapperSlowImpl<Element>(globalObject, result);
}
JSC_DEFINE_JIT_OPERATION(operationToJSHTMLElement, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
{
ASSERT(result);
ASSERT(globalObject);
JSC::VM& vm = globalObject->vm();
JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
return DOMJIT::toWrapperSlowImpl<HTMLElement>(globalObject, result);
}
JSC_DEFINE_JIT_OPERATION(operationToJSDocument, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
{
ASSERT(result);
ASSERT(globalObject);
JSC::VM& vm = globalObject->vm();
JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
return DOMJIT::toWrapperSlowImpl<Document>(globalObject, result);
}
JSC_DEFINE_JIT_OPERATION(operationToJSNode, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
{
ASSERT(result);
ASSERT(globalObject);
JSC::VM& vm = globalObject->vm();
JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
return DOMJIT::toWrapperSlowImpl<Node>(globalObject, result);
}
JSC_DEFINE_JIT_OPERATION(operationToJSContainerNode, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
{
ASSERT(result);
ASSERT(globalObject);
JSC::VM& vm = globalObject->vm();
JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
return DOMJIT::toWrapperSlowImpl<ContainerNode>(globalObject, result);
}
} } // namespace WebCore::DOMJIT
IGNORE_WARNINGS_END
#endif // ENABLE(JIT)