blob: 1533b0b941fe078787eed058d7c5851ef8fb9230 [file] [log] [blame]
/*
* Copyright (C) 2015-2019 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 "JSDollarVM.h"
#include "BuiltinExecutableCreator.h"
#include "CodeBlock.h"
#include "DOMAttributeGetterSetter.h"
#include "DOMJITGetterSetter.h"
#include "Debugger.h"
#include "FrameTracers.h"
#include "FunctionCodeBlock.h"
#include "GetterSetter.h"
#include "JSArray.h"
#include "JSArrayBuffer.h"
#include "JSCInlines.h"
#include "JSFunction.h"
#include "JSONObject.h"
#include "JSProxy.h"
#include "JSString.h"
#include "Options.h"
#include "Parser.h"
#include "ShadowChicken.h"
#include "Snippet.h"
#include "SnippetParams.h"
#include "TypeProfiler.h"
#include "TypeProfilerLog.h"
#include "VMInspector.h"
#include "WasmCapabilities.h"
#include <wtf/Atomics.h>
#include <wtf/DataLog.h>
#include <wtf/ProcessID.h>
#include <wtf/StringPrintStream.h>
#if ENABLE(WEBASSEMBLY)
#include "JSWebAssemblyHelpers.h"
#include "WasmStreamingParser.h"
#endif
using namespace JSC;
namespace {
// We must RELEASE_ASSERT(Options::useDollarVM()) in all JSDollarVM functions
// that are non-trivial at an eye's glance. This includes (but is not limited to):
// constructors
// create() factory
// createStructure() factory
// finishCreation()
// HOST_CALL or operation functions
// Constructors and methods of utility and test classes
// lambda functions
//
// The way to do this RELEASE_ASSERT is with the DollarVMAssertScope below.
//
// The only exception are some constexpr constructors used for instantiating
// globals (since these must have trivial constructors) e.g. DOMJITAttribute.
// Instead, these constructors should always be ALWAYS_INLINE.
class JSDollarVMCallFrame : public JSDestructibleObject {
using Base = JSDestructibleObject;
public:
JSDollarVMCallFrame(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static JSDollarVMCallFrame* create(ExecState* exec, unsigned requestedFrameIndex)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
Structure* structure = createStructure(vm, globalObject, jsNull());
JSDollarVMCallFrame* frame = new (NotNull, allocateCell<JSDollarVMCallFrame>(vm.heap)) JSDollarVMCallFrame(vm, structure);
frame->finishCreation(vm, exec, requestedFrameIndex);
return frame;
}
void finishCreation(VM& vm, CallFrame* frame, unsigned requestedFrameIndex)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
auto addProperty = [&] (VM& vm, const char* name, JSValue value) {
DollarVMAssertScope assertScope;
JSDollarVMCallFrame::addProperty(vm, name, value);
};
unsigned frameIndex = 0;
bool isValid = false;
frame->iterate([&] (StackVisitor& visitor) {
DollarVMAssertScope assertScope;
if (frameIndex++ != requestedFrameIndex)
return StackVisitor::Continue;
addProperty(vm, "name", jsString(vm, visitor->functionName()));
if (visitor->callee().isCell())
addProperty(vm, "callee", visitor->callee().asCell());
CodeBlock* codeBlock = visitor->codeBlock();
if (codeBlock) {
addProperty(vm, "codeBlock", codeBlock);
addProperty(vm, "unlinkedCodeBlock", codeBlock->unlinkedCodeBlock());
addProperty(vm, "executable", codeBlock->ownerExecutable());
}
isValid = true;
return StackVisitor::Done;
});
addProperty(vm, "valid", jsBoolean(isValid));
}
DECLARE_INFO;
private:
void addProperty(VM& vm, const char* name, JSValue value)
{
DollarVMAssertScope assertScope;
Identifier identifier = Identifier::fromString(vm, name);
putDirect(vm, identifier, value);
}
};
const ClassInfo JSDollarVMCallFrame::s_info = { "CallFrame", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSDollarVMCallFrame) };
class ElementHandleOwner;
class Root;
class Element : public JSNonFinalObject {
public:
Element(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
typedef JSNonFinalObject Base;
Root* root() const { return m_root.get(); }
void setRoot(VM& vm, Root* root) { m_root.set(vm, this, root); }
static Element* create(VM& vm, JSGlobalObject* globalObject, Root* root)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
Element* element = new (NotNull, allocateCell<Element>(vm.heap)) Element(vm, structure);
element->finishCreation(vm, root);
return element;
}
void finishCreation(VM&, Root*);
static void visitChildren(JSCell* cell, SlotVisitor& visitor)
{
DollarVMAssertScope assertScope;
Element* thisObject = jsCast<Element*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_root);
}
static ElementHandleOwner* handleOwner();
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
DECLARE_INFO;
private:
WriteBarrier<Root> m_root;
};
class ElementHandleOwner : public WeakHandleOwner {
WTF_MAKE_FAST_ALLOCATED;
public:
bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor, const char** reason) override
{
DollarVMAssertScope assertScope;
if (UNLIKELY(reason))
*reason = "JSC::Element is opaque root";
Element* element = jsCast<Element*>(handle.slot()->asCell());
return visitor.containsOpaqueRoot(element->root());
}
};
class Root : public JSDestructibleObject {
public:
Root(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
Element* element()
{
return m_element.get();
}
void setElement(Element* element)
{
DollarVMAssertScope assertScope;
Weak<Element> newElement(element, Element::handleOwner());
m_element.swap(newElement);
}
static Root* create(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
Root* root = new (NotNull, allocateCell<Root>(vm.heap)) Root(vm, structure);
root->finishCreation(vm);
return root;
}
typedef JSDestructibleObject Base;
DECLARE_INFO;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static void visitChildren(JSCell* thisObject, SlotVisitor& visitor)
{
DollarVMAssertScope assertScope;
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.addOpaqueRoot(thisObject);
}
private:
Weak<Element> m_element;
};
class SimpleObject : public JSNonFinalObject {
public:
SimpleObject(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
typedef JSNonFinalObject Base;
static constexpr bool needsDestruction = false;
static SimpleObject* create(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
SimpleObject* simpleObject = new (NotNull, allocateCell<SimpleObject>(vm.heap)) SimpleObject(vm, structure);
simpleObject->finishCreation(vm);
return simpleObject;
}
static void visitChildren(JSCell* cell, SlotVisitor& visitor)
{
DollarVMAssertScope assertScope;
SimpleObject* thisObject = jsCast<SimpleObject*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_hiddenValue);
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
JSValue hiddenValue()
{
return m_hiddenValue.get();
}
void setHiddenValue(VM& vm, JSValue value)
{
ASSERT(value.isCell());
m_hiddenValue.set(vm, this, value);
}
DECLARE_INFO;
private:
WriteBarrier<JSC::Unknown> m_hiddenValue;
};
class ImpureGetter : public JSNonFinalObject {
public:
ImpureGetter(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef JSNonFinalObject Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | JSC::GetOwnPropertySlotIsImpure | JSC::OverridesGetOwnPropertySlot;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static ImpureGetter* create(VM& vm, Structure* structure, JSObject* delegate)
{
DollarVMAssertScope assertScope;
ImpureGetter* getter = new (NotNull, allocateCell<ImpureGetter>(vm.heap)) ImpureGetter(vm, structure);
getter->finishCreation(vm, delegate);
return getter;
}
void finishCreation(VM& vm, JSObject* delegate)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
if (delegate)
m_delegate.set(vm, this, delegate);
}
static bool getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName name, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ImpureGetter* thisObject = jsCast<ImpureGetter*>(object);
if (thisObject->m_delegate) {
if (thisObject->m_delegate->getPropertySlot(exec, name, slot))
return true;
RETURN_IF_EXCEPTION(scope, false);
}
return Base::getOwnPropertySlot(object, exec, name, slot);
}
static void visitChildren(JSCell* cell, SlotVisitor& visitor)
{
DollarVMAssertScope assertScope;
ASSERT_GC_OBJECT_INHERITS(cell, info());
Base::visitChildren(cell, visitor);
ImpureGetter* thisObject = jsCast<ImpureGetter*>(cell);
visitor.append(thisObject->m_delegate);
}
void setDelegate(VM& vm, JSObject* delegate)
{
m_delegate.set(vm, this, delegate);
}
private:
WriteBarrier<JSObject> m_delegate;
};
class CustomGetter : public JSNonFinalObject {
public:
CustomGetter(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef JSNonFinalObject Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | JSC::OverridesGetOwnPropertySlot;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static CustomGetter* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
CustomGetter* getter = new (NotNull, allocateCell<CustomGetter>(vm.heap)) CustomGetter(vm, structure);
getter->finishCreation(vm);
return getter;
}
static bool getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
CustomGetter* thisObject = jsCast<CustomGetter*>(object);
if (propertyName == PropertyName(Identifier::fromString(vm, "customGetter"))) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum, thisObject->customGetter);
return true;
}
if (propertyName == PropertyName(Identifier::fromString(vm, "customGetterAccessor"))) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::CustomAccessor, thisObject->customGetterAcessor);
return true;
}
return JSObject::getOwnPropertySlot(thisObject, exec, propertyName, slot);
}
private:
static EncodedJSValue customGetter(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
CustomGetter* thisObject = jsDynamicCast<CustomGetter*>(vm, JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(exec, scope);
bool shouldThrow = thisObject->get(exec, PropertyName(Identifier::fromString(vm, "shouldThrow"))).toBoolean(exec);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (shouldThrow)
return throwVMTypeError(exec, scope);
return JSValue::encode(jsNumber(100));
}
static EncodedJSValue customGetterAcessor(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* thisObject = jsDynamicCast<JSObject*>(vm, JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(exec, scope);
bool shouldThrow = thisObject->get(exec, PropertyName(Identifier::fromString(vm, "shouldThrow"))).toBoolean(exec);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (shouldThrow)
return throwVMTypeError(exec, scope);
return JSValue::encode(jsNumber(100));
}
};
class RuntimeArray : public JSArray {
public:
typedef JSArray Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | OverridesGetPropertyNames;
static RuntimeArray* create(ExecState* exec)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
Structure* structure = createStructure(vm, globalObject, createPrototype(vm, globalObject));
RuntimeArray* runtimeArray = new (NotNull, allocateCell<RuntimeArray>(vm.heap)) RuntimeArray(exec, structure);
runtimeArray->finishCreation(exec);
vm.heap.addFinalizer(runtimeArray, destroy);
return runtimeArray;
}
~RuntimeArray() { }
static void destroy(JSCell* cell)
{
DollarVMAssertScope assertScope;
static_cast<RuntimeArray*>(cell)->RuntimeArray::~RuntimeArray();
}
static constexpr bool needsDestruction = false;
static bool getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
RuntimeArray* thisObject = jsCast<RuntimeArray*>(object);
if (propertyName == vm.propertyNames->length) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum, thisObject->lengthGetter);
return true;
}
Optional<uint32_t> index = parseIndex(propertyName);
if (index && index.value() < thisObject->getLength()) {
slot.setValue(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::DontEnum, jsNumber(thisObject->m_vector[index.value()]));
return true;
}
return JSObject::getOwnPropertySlot(thisObject, exec, propertyName, slot);
}
static bool getOwnPropertySlotByIndex(JSObject* object, ExecState* exec, unsigned index, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
RuntimeArray* thisObject = jsCast<RuntimeArray*>(object);
if (index < thisObject->getLength()) {
slot.setValue(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::DontEnum, jsNumber(thisObject->m_vector[index]));
return true;
}
return JSObject::getOwnPropertySlotByIndex(thisObject, exec, index, slot);
}
static NO_RETURN_DUE_TO_CRASH bool put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&)
{
RELEASE_ASSERT_NOT_REACHED();
}
static NO_RETURN_DUE_TO_CRASH bool deleteProperty(JSCell*, ExecState*, PropertyName)
{
RELEASE_ASSERT_NOT_REACHED();
}
unsigned getLength() const { return m_vector.size(); }
DECLARE_INFO;
static ArrayPrototype* createPrototype(VM&, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
return globalObject->arrayPrototype();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(DerivedArrayType, StructureFlags), info(), ArrayClass);
}
protected:
void finishCreation(ExecState* exec)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
Base::finishCreation(vm);
ASSERT(inherits(vm, info()));
for (size_t i = 0; i < exec->argumentCount(); i++)
m_vector.append(exec->argument(i).toInt32(exec));
}
private:
RuntimeArray(ExecState* exec, Structure* structure)
: JSArray(exec->vm(), structure, 0)
{
DollarVMAssertScope assertScope;
}
static EncodedJSValue lengthGetter(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
RuntimeArray* thisObject = jsDynamicCast<RuntimeArray*>(vm, JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(exec, scope);
return JSValue::encode(jsNumber(thisObject->getLength()));
}
Vector<int> m_vector;
};
static const struct CompactHashIndex staticCustomAccessorTableIndex[2] = {
{ 0, -1 },
{ -1, -1 },
};
static EncodedJSValue testStaticAccessorGetter(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
JSObject* thisObject = jsDynamicCast<JSObject*>(vm, JSValue::decode(thisValue));
RELEASE_ASSERT(thisObject);
if (JSValue result = thisObject->getDirect(vm, PropertyName(Identifier::fromString(vm, "testField"))))
return JSValue::encode(result);
return JSValue::encode(jsUndefined());
}
static bool testStaticAccessorPutter(ExecState* exec, EncodedJSValue thisValue, EncodedJSValue value)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
JSObject* thisObject = jsDynamicCast<JSObject*>(vm, JSValue::decode(thisValue));
RELEASE_ASSERT(thisObject);
return thisObject->putDirect(vm, PropertyName(Identifier::fromString(vm, "testField")), JSValue::decode(value));
}
static const struct HashTableValue staticCustomAccessorTableValues[1] = {
{ "testStaticAccessor", static_cast<unsigned>(PropertyAttribute::CustomAccessor), NoIntrinsic, { (intptr_t)static_cast<PropertySlot::GetValueFunc>(testStaticAccessorGetter), (intptr_t)static_cast<PutPropertySlot::PutValueFunc>(testStaticAccessorPutter) } },
};
static const struct HashTable staticCustomAccessorTable =
{ 1, 1, true, nullptr, staticCustomAccessorTableValues, staticCustomAccessorTableIndex };
class StaticCustomAccessor : public JSNonFinalObject {
using Base = JSNonFinalObject;
public:
StaticCustomAccessor(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
static constexpr unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable | OverridesGetOwnPropertySlot;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static StaticCustomAccessor* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
StaticCustomAccessor* accessor = new (NotNull, allocateCell<StaticCustomAccessor>(vm.heap)) StaticCustomAccessor(vm, structure);
accessor->finishCreation(vm);
return accessor;
}
static bool getOwnPropertySlot(JSObject* thisObject, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
if (String(propertyName.uid()) == "thinAirCustomGetter") {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::CustomAccessor, testStaticAccessorGetter);
return true;
}
return JSNonFinalObject::getOwnPropertySlot(thisObject, exec, propertyName, slot);
}
};
class DOMJITNode : public JSNonFinalObject {
public:
DOMJITNode(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef JSNonFinalObject Base;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(JSC::JSType(LastJSCObjectType + 1), StructureFlags), info());
}
#if ENABLE(JIT)
static Ref<Snippet> checkSubClassSnippet()
{
DollarVMAssertScope assertScope;
Ref<Snippet> snippet = Snippet::create();
snippet->setGenerator([=] (CCallHelpers& jit, SnippetParams& params) {
DollarVMAssertScope assertScope;
CCallHelpers::JumpList failureCases;
failureCases.append(jit.branchIfNotType(params[0].gpr(), JSC::JSType(LastJSCObjectType + 1)));
return failureCases;
});
return snippet;
}
#endif
static DOMJITNode* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
DOMJITNode* getter = new (NotNull, allocateCell<DOMJITNode>(vm.heap)) DOMJITNode(vm, structure);
getter->finishCreation(vm);
return getter;
}
int32_t value() const
{
return m_value;
}
static ptrdiff_t offsetOfValue() { return OBJECT_OFFSETOF(DOMJITNode, m_value); }
private:
int32_t m_value { 42 };
};
class DOMJITGetter : public DOMJITNode {
public:
DOMJITGetter(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef DOMJITNode Base;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(JSC::JSType(LastJSCObjectType + 1), StructureFlags), info());
}
static DOMJITGetter* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
DOMJITGetter* getter = new (NotNull, allocateCell<DOMJITGetter>(vm.heap)) DOMJITGetter(vm, structure);
getter->finishCreation(vm);
return getter;
}
class DOMJITAttribute : public DOMJIT::GetterSetter {
public:
ALWAYS_INLINE constexpr DOMJITAttribute()
: DOMJIT::GetterSetter(
DOMJITGetter::customGetter,
#if ENABLE(JIT)
&callDOMGetter,
#else
nullptr,
#endif
SpecInt32Only)
{
}
#if ENABLE(JIT)
static EncodedJSValue JIT_OPERATION slowCall(ExecState* exec, void* pointer)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
NativeCallFrameTracer tracer(vm, exec);
return JSValue::encode(jsNumber(static_cast<DOMJITGetter*>(pointer)->value()));
}
static Ref<DOMJIT::CallDOMGetterSnippet> callDOMGetter()
{
DollarVMAssertScope assertScope;
Ref<DOMJIT::CallDOMGetterSnippet> snippet = DOMJIT::CallDOMGetterSnippet::create();
snippet->requireGlobalObject = false;
snippet->setGenerator([=] (CCallHelpers& jit, SnippetParams& params) {
DollarVMAssertScope assertScope;
JSValueRegs results = params[0].jsValueRegs();
GPRReg dom = params[1].gpr();
params.addSlowPathCall(jit.jump(), jit, slowCall, results, dom);
return CCallHelpers::JumpList();
});
return snippet;
}
#endif
};
private:
void finishCreation(VM&);
static EncodedJSValue customGetter(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
DOMJITNode* thisObject = jsDynamicCast<DOMJITNode*>(vm, JSValue::decode(thisValue));
ASSERT(thisObject);
return JSValue::encode(jsNumber(thisObject->value()));
}
};
static const DOMJITGetter::DOMJITAttribute DOMJITGetterDOMJIT;
void DOMJITGetter::finishCreation(VM& vm)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
const DOMJIT::GetterSetter* domJIT = &DOMJITGetterDOMJIT;
auto* customGetterSetter = DOMAttributeGetterSetter::create(vm, domJIT->getter(), nullptr, DOMAttributeAnnotation { DOMJITNode::info(), domJIT });
putDirectCustomAccessor(vm, Identifier::fromString(vm, "customGetter"), customGetterSetter, PropertyAttribute::ReadOnly | PropertyAttribute::CustomAccessor);
}
class DOMJITGetterComplex : public DOMJITNode {
public:
DOMJITGetterComplex(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef DOMJITNode Base;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(JSC::JSType(LastJSCObjectType + 1), StructureFlags), info());
}
static DOMJITGetterComplex* create(VM& vm, JSGlobalObject* globalObject, Structure* structure)
{
DollarVMAssertScope assertScope;
DOMJITGetterComplex* getter = new (NotNull, allocateCell<DOMJITGetterComplex>(vm.heap)) DOMJITGetterComplex(vm, structure);
getter->finishCreation(vm, globalObject);
return getter;
}
class DOMJITAttribute : public DOMJIT::GetterSetter {
public:
ALWAYS_INLINE constexpr DOMJITAttribute()
: DOMJIT::GetterSetter(
DOMJITGetterComplex::customGetter,
#if ENABLE(JIT)
&callDOMGetter,
#else
nullptr,
#endif
SpecInt32Only)
{
}
#if ENABLE(JIT)
static EncodedJSValue JIT_OPERATION slowCall(ExecState* exec, void* pointer)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
NativeCallFrameTracer tracer(vm, exec);
auto scope = DECLARE_THROW_SCOPE(vm);
auto* object = static_cast<DOMJITNode*>(pointer);
auto* domjitGetterComplex = jsDynamicCast<DOMJITGetterComplex*>(vm, object);
if (domjitGetterComplex) {
if (domjitGetterComplex->m_enableException)
return JSValue::encode(throwException(exec, scope, createError(exec, "DOMJITGetterComplex slow call exception"_s)));
}
return JSValue::encode(jsNumber(object->value()));
}
static Ref<DOMJIT::CallDOMGetterSnippet> callDOMGetter()
{
DollarVMAssertScope assertScope;
Ref<DOMJIT::CallDOMGetterSnippet> snippet = DOMJIT::CallDOMGetterSnippet::create();
static_assert(GPRInfo::numberOfRegisters >= 4, "Number of registers should be larger or equal to 4.");
unsigned numGPScratchRegisters = GPRInfo::numberOfRegisters - 4;
snippet->numGPScratchRegisters = numGPScratchRegisters;
snippet->numFPScratchRegisters = 3;
snippet->setGenerator([=] (CCallHelpers& jit, SnippetParams& params) {
DollarVMAssertScope assertScope;
JSValueRegs results = params[0].jsValueRegs();
GPRReg domGPR = params[1].gpr();
for (unsigned i = 0; i < numGPScratchRegisters; ++i)
jit.move(CCallHelpers::TrustedImm32(42), params.gpScratch(i));
params.addSlowPathCall(jit.jump(), jit, slowCall, results, domGPR);
return CCallHelpers::JumpList();
});
return snippet;
}
#endif
};
private:
void finishCreation(VM&, JSGlobalObject*);
static EncodedJSValue JSC_HOST_CALL functionEnableException(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto* object = jsDynamicCast<DOMJITGetterComplex*>(vm, callFrame->thisValue());
if (object)
object->m_enableException = true;
return JSValue::encode(jsUndefined());
}
static EncodedJSValue customGetter(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* thisObject = jsDynamicCast<DOMJITGetterComplex*>(vm, JSValue::decode(thisValue));
ASSERT(thisObject);
if (thisObject->m_enableException)
return JSValue::encode(throwException(exec, scope, createError(exec, "DOMJITGetterComplex slow call exception"_s)));
return JSValue::encode(jsNumber(thisObject->value()));
}
bool m_enableException { false };
};
static const DOMJITGetterComplex::DOMJITAttribute DOMJITGetterComplexDOMJIT;
void DOMJITGetterComplex::finishCreation(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
const DOMJIT::GetterSetter* domJIT = &DOMJITGetterComplexDOMJIT;
auto* customGetterSetter = DOMAttributeGetterSetter::create(vm, domJIT->getter(), nullptr, DOMAttributeAnnotation { DOMJITGetterComplex::info(), domJIT });
putDirectCustomAccessor(vm, Identifier::fromString(vm, "customGetter"), customGetterSetter, PropertyAttribute::ReadOnly | PropertyAttribute::CustomAccessor);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "enableException"), 0, functionEnableException, NoIntrinsic, 0);
}
class DOMJITFunctionObject : public DOMJITNode {
public:
DOMJITFunctionObject(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef DOMJITNode Base;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(JSC::JSType(LastJSCObjectType + 1), StructureFlags), info());
}
static DOMJITFunctionObject* create(VM& vm, JSGlobalObject* globalObject, Structure* structure)
{
DollarVMAssertScope assertScope;
DOMJITFunctionObject* object = new (NotNull, allocateCell<DOMJITFunctionObject>(vm.heap)) DOMJITFunctionObject(vm, structure);
object->finishCreation(vm, globalObject);
return object;
}
static EncodedJSValue JSC_HOST_CALL functionWithTypeCheck(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
NativeCallFrameTracer tracer(vm, callFrame);
auto scope = DECLARE_THROW_SCOPE(vm);
DOMJITNode* thisObject = jsDynamicCast<DOMJITNode*>(vm, callFrame->thisValue());
if (!thisObject)
return throwVMTypeError(callFrame, scope);
return JSValue::encode(jsNumber(thisObject->value()));
}
static EncodedJSValue JIT_OPERATION functionWithoutTypeCheck(ExecState* exec, DOMJITNode* node)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
NativeCallFrameTracer tracer(vm, exec);
return JSValue::encode(jsNumber(node->value()));
}
#if ENABLE(JIT)
static Ref<Snippet> checkSubClassSnippet()
{
DollarVMAssertScope assertScope;
Ref<Snippet> snippet = Snippet::create();
snippet->numFPScratchRegisters = 1;
snippet->setGenerator([=] (CCallHelpers& jit, SnippetParams& params) {
DollarVMAssertScope assertScope;
static const double value = 42.0;
CCallHelpers::JumpList failureCases;
// May use scratch registers.
jit.loadDouble(CCallHelpers::TrustedImmPtr(&value), params.fpScratch(0));
failureCases.append(jit.branchIfNotType(params[0].gpr(), JSC::JSType(LastJSCObjectType + 1)));
return failureCases;
});
return snippet;
}
#endif
private:
void finishCreation(VM&, JSGlobalObject*);
};
static const DOMJIT::Signature DOMJITFunctionObjectSignature(DOMJITFunctionObject::functionWithoutTypeCheck, DOMJITFunctionObject::info(), DOMJIT::Effect::forRead(DOMJIT::HeapRange::top()), SpecInt32Only);
void DOMJITFunctionObject::finishCreation(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "func"), 0, functionWithTypeCheck, NoIntrinsic, &DOMJITFunctionObjectSignature, static_cast<unsigned>(PropertyAttribute::ReadOnly));
}
class DOMJITCheckSubClassObject : public DOMJITNode {
public:
DOMJITCheckSubClassObject(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef DOMJITNode Base;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(JSC::JSType(LastJSCObjectType + 1), StructureFlags), info());
}
static DOMJITCheckSubClassObject* create(VM& vm, JSGlobalObject* globalObject, Structure* structure)
{
DollarVMAssertScope assertScope;
DOMJITCheckSubClassObject* object = new (NotNull, allocateCell<DOMJITCheckSubClassObject>(vm.heap)) DOMJITCheckSubClassObject(vm, structure);
object->finishCreation(vm, globalObject);
return object;
}
static EncodedJSValue JSC_HOST_CALL functionWithTypeCheck(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* thisObject = jsDynamicCast<DOMJITCheckSubClassObject*>(vm, callFrame->thisValue());
if (!thisObject)
return throwVMTypeError(callFrame, scope);
return JSValue::encode(jsNumber(thisObject->value()));
}
static EncodedJSValue JIT_OPERATION functionWithoutTypeCheck(ExecState* exec, DOMJITNode* node)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
NativeCallFrameTracer tracer(vm, exec);
return JSValue::encode(jsNumber(node->value()));
}
private:
void finishCreation(VM&, JSGlobalObject*);
};
static const DOMJIT::Signature DOMJITCheckSubClassObjectSignature(DOMJITCheckSubClassObject::functionWithoutTypeCheck, DOMJITCheckSubClassObject::info(), DOMJIT::Effect::forRead(DOMJIT::HeapRange::top()), SpecInt32Only);
void DOMJITCheckSubClassObject::finishCreation(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "func"), 0, functionWithTypeCheck, NoIntrinsic, &DOMJITCheckSubClassObjectSignature, static_cast<unsigned>(PropertyAttribute::ReadOnly));
}
class DOMJITGetterBaseJSObject : public DOMJITNode {
public:
DOMJITGetterBaseJSObject(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
using Base = DOMJITNode;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(JSC::JSType(LastJSCObjectType + 1), StructureFlags), info());
}
static DOMJITGetterBaseJSObject* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
DOMJITGetterBaseJSObject* getter = new (NotNull, allocateCell<DOMJITGetterBaseJSObject>(vm.heap)) DOMJITGetterBaseJSObject(vm, structure);
getter->finishCreation(vm);
return getter;
}
class DOMJITAttribute : public DOMJIT::GetterSetter {
public:
ALWAYS_INLINE constexpr DOMJITAttribute()
: DOMJIT::GetterSetter(
DOMJITGetterBaseJSObject::customGetter,
#if ENABLE(JIT)
&callDOMGetter,
#else
nullptr,
#endif
SpecBytecodeTop)
{
}
#if ENABLE(JIT)
static EncodedJSValue JIT_OPERATION slowCall(ExecState* exec, void* pointer)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
NativeCallFrameTracer tracer(vm, exec);
JSObject* object = static_cast<JSObject*>(pointer);
return JSValue::encode(object->getPrototypeDirect(vm));
}
static Ref<DOMJIT::CallDOMGetterSnippet> callDOMGetter()
{
DollarVMAssertScope assertScope;
Ref<DOMJIT::CallDOMGetterSnippet> snippet = DOMJIT::CallDOMGetterSnippet::create();
snippet->requireGlobalObject = false;
snippet->setGenerator([=] (CCallHelpers& jit, SnippetParams& params) {
DollarVMAssertScope assertScope;
JSValueRegs results = params[0].jsValueRegs();
GPRReg dom = params[1].gpr();
params.addSlowPathCall(jit.jump(), jit, slowCall, results, dom);
return CCallHelpers::JumpList();
});
return snippet;
}
#endif
};
private:
void finishCreation(VM&);
static EncodedJSValue customGetter(ExecState* exec, EncodedJSValue thisValue, PropertyName)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
JSObject* thisObject = jsDynamicCast<JSObject*>(vm, JSValue::decode(thisValue));
RELEASE_ASSERT(thisObject);
return JSValue::encode(thisObject->getPrototypeDirect(vm));
}
};
static const DOMJITGetterBaseJSObject::DOMJITAttribute DOMJITGetterBaseJSObjectDOMJIT;
void DOMJITGetterBaseJSObject::finishCreation(VM& vm)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
const DOMJIT::GetterSetter* domJIT = &DOMJITGetterBaseJSObjectDOMJIT;
auto* customGetterSetter = DOMAttributeGetterSetter::create(vm, domJIT->getter(), nullptr, DOMAttributeAnnotation { JSObject::info(), domJIT });
putDirectCustomAccessor(vm, Identifier::fromString(vm, "customGetter"), customGetterSetter, PropertyAttribute::ReadOnly | PropertyAttribute::CustomAccessor);
}
class Message : public ThreadSafeRefCounted<Message> {
public:
Message(ArrayBufferContents&&, int32_t);
~Message();
ArrayBufferContents&& releaseContents() { return WTFMove(m_contents); }
int32_t index() const { return m_index; }
private:
ArrayBufferContents m_contents;
int32_t m_index { 0 };
};
class JSTestCustomGetterSetter : public JSNonFinalObject {
public:
using Base = JSNonFinalObject;
static constexpr unsigned StructureFlags = Base::StructureFlags;
JSTestCustomGetterSetter(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
static JSTestCustomGetterSetter* create(VM& vm, JSGlobalObject*, Structure* structure)
{
DollarVMAssertScope assertScope;
JSTestCustomGetterSetter* result = new (NotNull, allocateCell<JSTestCustomGetterSetter>(vm.heap)) JSTestCustomGetterSetter(vm, structure);
result->finishCreation(vm);
return result;
}
void finishCreation(VM&);
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, globalObject->objectPrototype(), TypeInfo(ObjectType, StructureFlags), info());
}
DECLARE_INFO;
};
static EncodedJSValue customGetAccessor(ExecState*, EncodedJSValue thisValue, PropertyName)
{
// Passed |this|
return thisValue;
}
static EncodedJSValue customGetValue(ExecState* exec, EncodedJSValue slotValue, PropertyName)
{
RELEASE_ASSERT(JSValue::decode(slotValue).inherits<JSTestCustomGetterSetter>(exec->vm()));
// Passed property holder.
return slotValue;
}
static bool customSetAccessor(ExecState* exec, EncodedJSValue thisObject, EncodedJSValue encodedValue)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
JSValue value = JSValue::decode(encodedValue);
RELEASE_ASSERT(value.isObject());
JSObject* object = asObject(value);
PutPropertySlot slot(object);
object->put(object, exec, Identifier::fromString(vm, "result"), JSValue::decode(thisObject), slot);
return true;
}
static bool customSetValue(ExecState* exec, EncodedJSValue slotValue, EncodedJSValue encodedValue)
{
DollarVMAssertScope assertScope;
VM& vm = exec->vm();
RELEASE_ASSERT(JSValue::decode(slotValue).inherits<JSTestCustomGetterSetter>(exec->vm()));
JSValue value = JSValue::decode(encodedValue);
RELEASE_ASSERT(value.isObject());
JSObject* object = asObject(value);
PutPropertySlot slot(object);
object->put(object, exec, Identifier::fromString(vm, "result"), JSValue::decode(slotValue), slot);
return true;
}
void JSTestCustomGetterSetter::finishCreation(VM& vm)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
putDirectCustomAccessor(vm, Identifier::fromString(vm, "customValue"),
CustomGetterSetter::create(vm, customGetValue, customSetValue), 0);
putDirectCustomAccessor(vm, Identifier::fromString(vm, "customAccessor"),
CustomGetterSetter::create(vm, customGetAccessor, customSetAccessor), static_cast<unsigned>(PropertyAttribute::CustomAccessor));
}
const ClassInfo Element::s_info = { "Element", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(Element) };
const ClassInfo Root::s_info = { "Root", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(Root) };
const ClassInfo SimpleObject::s_info = { "SimpleObject", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(SimpleObject) };
const ClassInfo ImpureGetter::s_info = { "ImpureGetter", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(ImpureGetter) };
const ClassInfo CustomGetter::s_info = { "CustomGetter", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(CustomGetter) };
const ClassInfo RuntimeArray::s_info = { "RuntimeArray", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(RuntimeArray) };
#if ENABLE(JIT)
const ClassInfo DOMJITNode::s_info = { "DOMJITNode", &Base::s_info, nullptr, &DOMJITNode::checkSubClassSnippet, CREATE_METHOD_TABLE(DOMJITNode) };
#else
const ClassInfo DOMJITNode::s_info = { "DOMJITNode", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DOMJITNode) };
#endif
const ClassInfo DOMJITGetter::s_info = { "DOMJITGetter", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DOMJITGetter) };
const ClassInfo DOMJITGetterComplex::s_info = { "DOMJITGetterComplex", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DOMJITGetterComplex) };
const ClassInfo DOMJITGetterBaseJSObject::s_info = { "DOMJITGetterBaseJSObject", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DOMJITGetterBaseJSObject) };
#if ENABLE(JIT)
const ClassInfo DOMJITFunctionObject::s_info = { "DOMJITFunctionObject", &Base::s_info, nullptr, &DOMJITFunctionObject::checkSubClassSnippet, CREATE_METHOD_TABLE(DOMJITFunctionObject) };
#else
const ClassInfo DOMJITFunctionObject::s_info = { "DOMJITFunctionObject", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DOMJITFunctionObject) };
#endif
const ClassInfo DOMJITCheckSubClassObject::s_info = { "DOMJITCheckSubClassObject", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DOMJITCheckSubClassObject) };
const ClassInfo JSTestCustomGetterSetter::s_info = { "JSTestCustomGetterSetter", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSTestCustomGetterSetter) };
const ClassInfo StaticCustomAccessor::s_info = { "StaticCustomAccessor", &Base::s_info, &staticCustomAccessorTable, nullptr, CREATE_METHOD_TABLE(StaticCustomAccessor) };
ElementHandleOwner* Element::handleOwner()
{
DollarVMAssertScope assertScope;
static ElementHandleOwner* owner = 0;
if (!owner)
owner = new ElementHandleOwner();
return owner;
}
void Element::finishCreation(VM& vm, Root* root)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
setRoot(vm, root);
m_root->setElement(this);
}
#if ENABLE(WEBASSEMBLY)
static EncodedJSValue JSC_HOST_CALL functionWasmStreamingParserAddBytes(JSGlobalObject*, CallFrame*);
static EncodedJSValue JSC_HOST_CALL functionWasmStreamingParserFinalize(JSGlobalObject*, CallFrame*);
class WasmStreamingParser : public JSDestructibleObject {
public:
class Client final : public Wasm::StreamingParserClient {
public:
explicit Client(WasmStreamingParser* parser)
: m_parser(parser)
{
}
bool didReceiveSectionData(Wasm::Section) override { return true; }
bool didReceiveFunctionData(unsigned, const Wasm::FunctionData&) override { return true; }
void didFinishParsing() override { }
WasmStreamingParser* m_parser;
};
WasmStreamingParser(VM& vm, Structure* structure)
: Base(vm, structure)
, m_info(Wasm::ModuleInformation::create())
, m_client(this)
, m_streamingParser(m_info.get(), m_client)
{
DollarVMAssertScope assertScope;
}
using Base = JSDestructibleObject;
static WasmStreamingParser* create(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
WasmStreamingParser* result = new (NotNull, allocateCell<WasmStreamingParser>(vm.heap)) WasmStreamingParser(vm, structure);
result->finishCreation(vm);
return result;
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
Wasm::StreamingParser& streamingParser() { return m_streamingParser; }
void finishCreation(VM& vm)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
JSGlobalObject* globalObject = this->globalObject(vm);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "addBytes"), 0, functionWasmStreamingParserAddBytes, NoIntrinsic, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "finalize"), 0, functionWasmStreamingParserFinalize, NoIntrinsic, static_cast<unsigned>(PropertyAttribute::DontEnum));
}
DECLARE_INFO;
Ref<Wasm::ModuleInformation> m_info;
Client m_client;
Wasm::StreamingParser m_streamingParser;
};
const ClassInfo WasmStreamingParser::s_info = { "WasmStreamingParser", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WasmStreamingParser) };
EncodedJSValue JSC_HOST_CALL functionWasmStreamingParserAddBytes(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
auto* thisObject = jsDynamicCast<WasmStreamingParser*>(vm, callFrame->thisValue());
if (!thisObject)
RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(false)));
auto data = getWasmBufferFromValue(callFrame, callFrame->argument(0));
RETURN_IF_EXCEPTION(scope, encodedJSValue());
RELEASE_AND_RETURN(scope, JSValue::encode(jsNumber(static_cast<int32_t>(thisObject->streamingParser().addBytes(bitwise_cast<const uint8_t*>(data.first), data.second)))));
}
EncodedJSValue JSC_HOST_CALL functionWasmStreamingParserFinalize(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto* thisObject = jsDynamicCast<WasmStreamingParser*>(vm, callFrame->thisValue());
if (!thisObject)
return JSValue::encode(jsBoolean(false));
return JSValue::encode(jsNumber(static_cast<int32_t>(thisObject->streamingParser().finalize())));
}
#endif
} // namespace
namespace JSC {
const ClassInfo JSDollarVM::s_info = { "DollarVM", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSDollarVM) };
// Triggers a crash immediately.
// Usage: $vm.crash()
static NO_RETURN_DUE_TO_CRASH EncodedJSValue JSC_HOST_CALL functionCrash(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
CRASH();
}
// Executes a breakpoint instruction if the first argument is truthy or is unset.
// Usage: $vm.breakpoint(<condition>)
static EncodedJSValue JSC_HOST_CALL functionBreakpoint(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
// Nothing should throw here but we might as well double check...
VM& vm = globalObject->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
UNUSED_PARAM(scope);
if (!callFrame->argumentCount() || callFrame->argument(0).toBoolean(callFrame))
WTFBreakpointTrap();
return encodedJSUndefined();
}
// Returns true if the current frame is a DFG frame.
// Usage: isDFG = $vm.dfgTrue()
static EncodedJSValue JSC_HOST_CALL functionDFGTrue(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
return JSValue::encode(jsBoolean(false));
}
// Returns true if the current frame is a FTL frame.
// Usage: isFTL = $vm.ftlTrue()
static EncodedJSValue JSC_HOST_CALL functionFTLTrue(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
return JSValue::encode(jsBoolean(false));
}
static EncodedJSValue JSC_HOST_CALL functionCpuMfence(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
#if CPU(X86_64) && !OS(WINDOWS)
asm volatile("mfence" ::: "memory");
#endif
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionCpuRdtsc(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
#if CPU(X86_64) && !OS(WINDOWS)
unsigned high;
unsigned low;
asm volatile ("rdtsc" : "=a"(low), "=d"(high));
return JSValue::encode(jsNumber(low));
#else
return JSValue::encode(jsNumber(0));
#endif
}
static EncodedJSValue JSC_HOST_CALL functionCpuCpuid(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
#if CPU(X86_64) && !OS(WINDOWS)
WTF::x86_cpuid();
#endif
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionCpuPause(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
#if CPU(X86_64) && !OS(WINDOWS)
asm volatile ("pause" ::: "memory");
#endif
return JSValue::encode(jsUndefined());
}
// This takes either a JSArrayBuffer, JSArrayBufferView*, or any other object as its first
// argument. The second argument is expected to be an integer.
//
// If the first argument is a JSArrayBuffer, it'll clflush on that buffer
// plus the second argument as a byte offset. It'll also flush on the object
// itself so its length, etc, aren't in the cache.
//
// If the first argument is not a JSArrayBuffer, we load the butterfly
// and clflush at the address of the butterfly.
static EncodedJSValue JSC_HOST_CALL functionCpuClflush(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
#if CPU(X86_64) && !OS(WINDOWS)
VM& vm = globalObject->vm();
if (!callFrame->argument(1).isInt32())
return JSValue::encode(jsBoolean(false));
auto clflush = [] (void* ptr) {
DollarVMAssertScope assertScope;
char* ptrToFlush = static_cast<char*>(ptr);
asm volatile ("clflush %0" :: "m"(*ptrToFlush) : "memory");
};
Vector<void*> toFlush;
uint32_t offset = callFrame->argument(1).asUInt32();
if (JSArrayBufferView* view = jsDynamicCast<JSArrayBufferView*>(vm, callFrame->argument(0)))
toFlush.append(bitwise_cast<char*>(view->vector()) + offset);
else if (JSObject* object = jsDynamicCast<JSObject*>(vm, callFrame->argument(0))) {
switch (object->indexingType()) {
case ALL_INT32_INDEXING_TYPES:
case ALL_CONTIGUOUS_INDEXING_TYPES:
case ALL_DOUBLE_INDEXING_TYPES:
toFlush.append(bitwise_cast<char*>(object->butterfly()) + Butterfly::offsetOfVectorLength());
toFlush.append(bitwise_cast<char*>(object->butterfly()) + Butterfly::offsetOfPublicLength());
}
}
if (!toFlush.size())
return JSValue::encode(jsBoolean(false));
for (void* ptr : toFlush)
clflush(ptr);
return JSValue::encode(jsBoolean(true));
#else
UNUSED_PARAM(globalObject);
UNUSED_PARAM(callFrame);
return JSValue::encode(jsBoolean(false));
#endif
}
class CallerFrameJITTypeFunctor {
public:
CallerFrameJITTypeFunctor()
: m_currentFrame(0)
, m_jitType(JITType::None)
{
DollarVMAssertScope assertScope;
}
StackVisitor::Status operator()(StackVisitor& visitor) const
{
if (m_currentFrame++ > 1) {
m_jitType = visitor->codeBlock()->jitType();
return StackVisitor::Done;
}
return StackVisitor::Continue;
}
JITType jitType() { return m_jitType; }
private:
mutable unsigned m_currentFrame;
mutable JITType m_jitType;
};
static FunctionExecutable* getExecutableForFunction(JSValue theFunctionValue)
{
DollarVMAssertScope assertScope;
if (!theFunctionValue.isCell())
return nullptr;
VM& vm = theFunctionValue.asCell()->vm();
JSFunction* theFunction = jsDynamicCast<JSFunction*>(vm, theFunctionValue);
if (!theFunction)
return nullptr;
FunctionExecutable* executable = jsDynamicCast<FunctionExecutable*>(vm,
theFunction->executable());
return executable;
}
// Returns true if the current frame is a LLInt frame.
// Usage: isLLInt = $vm.llintTrue()
static EncodedJSValue JSC_HOST_CALL functionLLintTrue(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
if (!callFrame)
return JSValue::encode(jsUndefined());
CallerFrameJITTypeFunctor functor;
callFrame->iterate(functor);
return JSValue::encode(jsBoolean(functor.jitType() == JITType::InterpreterThunk));
}
// Returns true if the current frame is a baseline JIT frame.
// Usage: isBaselineJIT = $vm.jitTrue()
static EncodedJSValue JSC_HOST_CALL functionJITTrue(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
if (!callFrame)
return JSValue::encode(jsUndefined());
CallerFrameJITTypeFunctor functor;
callFrame->iterate(functor);
return JSValue::encode(jsBoolean(functor.jitType() == JITType::BaselineJIT));
}
// Set that the argument function should not be inlined.
// Usage:
// function f() { };
// $vm.noInline(f);
static EncodedJSValue JSC_HOST_CALL functionNoInline(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
if (callFrame->argumentCount() < 1)
return JSValue::encode(jsUndefined());
JSValue theFunctionValue = callFrame->uncheckedArgument(0);
if (FunctionExecutable* executable = getExecutableForFunction(theFunctionValue))
executable->setNeverInline(true);
return JSValue::encode(jsUndefined());
}
// Runs a full GC synchronously.
// Usage: $vm.gc()
static EncodedJSValue JSC_HOST_CALL functionGC(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VMInspector::gc(callFrame);
return JSValue::encode(jsUndefined());
}
// Runs the edenGC synchronously.
// Usage: $vm.edenGC()
static EncodedJSValue JSC_HOST_CALL functionEdenGC(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VMInspector::edenGC(callFrame);
return JSValue::encode(jsUndefined());
}
// Dumps the hashes of all subspaces currently registered with the VM.
// Usage: $vm.dumpSubspaceHashes()
static EncodedJSValue JSC_HOST_CALL functionDumpSubspaceHashes(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
VMInspector::dumpSubspaceHashes(&vm);
return JSValue::encode(jsUndefined());
}
// Gets a JSDollarVMCallFrame for a specified frame index.
// Usage: var callFrame = $vm.callFrame(0) // frame 0 is the top frame.
// Usage: var callFrame = $vm.callFrame() // implies frame 0 i.e. current frame.
//
// This gives you the ability to query the following:
// callFrame.valid; // false if we asked for a frame beyond the end of the stack, else true.
// callFrame.callee;
// callFrame.codeBlock;
// callFrame.unlinkedCodeBlock;
// callFrame.executable;
//
// Note: you cannot toString() a codeBlock, unlinkedCodeBlock, or executable because
// there are internal objects and not a JS object. Hence, you cannot do string
// concatenation with them.
static EncodedJSValue JSC_HOST_CALL functionCallFrame(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
unsigned frameNumber = 1;
if (callFrame->argumentCount() >= 1) {
JSValue value = callFrame->uncheckedArgument(0);
if (!value.isUInt32())
return JSValue::encode(jsUndefined());
// We need to inc the frame number because the caller would consider
// its own frame as frame 0. Hence, we need discount the frame for this
// function.
frameNumber = value.asUInt32() + 1;
}
return JSValue::encode(JSDollarVMCallFrame::create(callFrame, frameNumber));
}
// Gets a token for the CodeBlock for a specified frame index.
// Usage: codeBlockToken = $vm.codeBlockForFrame(0) // frame 0 is the top frame.
// Usage: codeBlockToken = $vm.codeBlockForFrame() // implies frame 0 i.e. current frame.
static EncodedJSValue JSC_HOST_CALL functionCodeBlockForFrame(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
unsigned frameNumber = 1;
if (callFrame->argumentCount() >= 1) {
JSValue value = callFrame->uncheckedArgument(0);
if (!value.isUInt32())
return JSValue::encode(jsUndefined());
// We need to inc the frame number because the caller would consider
// its own frame as frame 0. Hence, we need discount the frame for this
// function.
frameNumber = value.asUInt32() + 1;
}
CodeBlock* codeBlock = VMInspector::codeBlockForFrame(callFrame, frameNumber);
if (codeBlock)
return JSValue::encode(codeBlock);
return JSValue::encode(jsUndefined());
}
static CodeBlock* codeBlockFromArg(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
if (callFrame->argumentCount() < 1)
return nullptr;
JSValue value = callFrame->uncheckedArgument(0);
CodeBlock* candidateCodeBlock = nullptr;
if (value.isCell()) {
JSFunction* func = jsDynamicCast<JSFunction*>(vm, value.asCell());
if (func) {
if (func->isHostFunction())
candidateCodeBlock = nullptr;
else
candidateCodeBlock = func->jsExecutable()->eitherCodeBlock();
} else
candidateCodeBlock = static_cast<CodeBlock*>(value.asCell());
}
if (candidateCodeBlock && VMInspector::isValidCodeBlock(callFrame, candidateCodeBlock))
return candidateCodeBlock;
if (candidateCodeBlock)
dataLog("Invalid codeBlock: ", RawPointer(candidateCodeBlock), " ", value, "\n");
else
dataLog("Invalid codeBlock: ", value, "\n");
return nullptr;
}
// Usage: $vm.print("codeblock = ", $vm.codeBlockFor(functionObj))
// Usage: $vm.print("codeblock = ", $vm.codeBlockFor(codeBlockToken))
// Note: you cannot toString() a codeBlock because it's an internal object and not
// a JS object. Hence, you cannot do string concatenation with it.
static EncodedJSValue JSC_HOST_CALL functionCodeBlockFor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
CodeBlock* codeBlock = codeBlockFromArg(globalObject, callFrame);
WTF::StringPrintStream stream;
if (codeBlock) {
stream.print(*codeBlock);
return JSValue::encode(jsString(globalObject->vm(), stream.toString()));
}
return JSValue::encode(jsUndefined());
}
// Usage: $vm.dumpSourceFor(functionObj)
// Usage: $vm.dumpSourceFor(codeBlockToken)
static EncodedJSValue JSC_HOST_CALL functionDumpSourceFor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
CodeBlock* codeBlock = codeBlockFromArg(globalObject, callFrame);
if (codeBlock)
codeBlock->dumpSource();
return JSValue::encode(jsUndefined());
}
// Usage: $vm.dumpBytecodeFor(functionObj)
// Usage: $vm.dumpBytecodeFor(codeBlock)
static EncodedJSValue JSC_HOST_CALL functionDumpBytecodeFor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
CodeBlock* codeBlock = codeBlockFromArg(globalObject, callFrame);
if (codeBlock)
codeBlock->dumpBytecode();
return JSValue::encode(jsUndefined());
}
static EncodedJSValue doPrint(JSGlobalObject* globalObject, CallFrame* callFrame, bool addLineFeed)
{
DollarVMAssertScope assertScope;
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
for (unsigned i = 0; i < callFrame->argumentCount(); ++i) {
JSValue arg = callFrame->uncheckedArgument(i);
if (arg.isCell()
&& !arg.isObject()
&& !arg.isString()
&& !arg.isBigInt()) {
dataLog(arg);
continue;
}
String argStr = callFrame->uncheckedArgument(i).toWTFString(callFrame);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
dataLog(argStr);
}
if (addLineFeed)
dataLog("\n");
return JSValue::encode(jsUndefined());
}
// Prints a series of comma separate strings without appending a newline.
// Usage: $vm.dataLog(str1, str2, str3)
static EncodedJSValue JSC_HOST_CALL functionDataLog(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
const bool addLineFeed = false;
return doPrint(globalObject, callFrame, addLineFeed);
}
// Prints a series of comma separate strings and appends a newline.
// Usage: $vm.print(str1, str2, str3)
static EncodedJSValue JSC_HOST_CALL functionPrint(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
const bool addLineFeed = true;
return doPrint(globalObject, callFrame, addLineFeed);
}
// Dumps the current CallFrame.
// Usage: $vm.dumpCallFrame()
static EncodedJSValue JSC_HOST_CALL functionDumpCallFrame(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
// When the callers call this function, they are expecting to dump their
// own frame. So skip 1 for this frame.
VMInspector::dumpCallFrame(callFrame, 1);
return JSValue::encode(jsUndefined());
}
// Dumps the JS stack.
// Usage: $vm.printStack()
static EncodedJSValue JSC_HOST_CALL functionDumpStack(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
// When the callers call this function, they are expecting to dump the
// stack starting their own frame. So skip 1 for this frame.
VMInspector::dumpStack(callFrame, 1);
return JSValue::encode(jsUndefined());
}
// Dumps the current CallFrame.
// Usage: $vm.dumpRegisters(N) // dump the registers of the Nth CallFrame.
// Usage: $vm.dumpRegisters() // dump the registers of the current CallFrame.
// FIXME: Currently, this function dumps the physical frame. We should make
// it dump the logical frame (i.e. be able to dump inlined frames as well).
static EncodedJSValue JSC_HOST_CALL functionDumpRegisters(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
unsigned requestedFrameIndex = 1;
if (callFrame->argumentCount() >= 1) {
JSValue value = callFrame->uncheckedArgument(0);
if (!value.isUInt32())
return JSValue::encode(jsUndefined());
// We need to inc the frame number because the caller would consider
// its own frame as frame 0. Hence, we need discount the frame for this
// function.
requestedFrameIndex = value.asUInt32() + 1;
}
unsigned frameIndex = 0;
callFrame->iterate([&] (StackVisitor& visitor) {
DollarVMAssertScope assertScope;
if (frameIndex++ != requestedFrameIndex)
return StackVisitor::Continue;
VMInspector::dumpRegisters(visitor->callFrame());
return StackVisitor::Done;
});
return encodedJSUndefined();
}
// Dumps the internal memory layout of a JSCell.
// Usage: $vm.dumpCell(cell)
static EncodedJSValue JSC_HOST_CALL functionDumpCell(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
JSValue value = callFrame->argument(0);
if (!value.isCell())
return encodedJSUndefined();
VMInspector::dumpCellMemory(value.asCell());
return encodedJSUndefined();
}
// Gets the dataLog dump of the indexingMode of the passed value.
// Usage: $vm.print("indexingMode = " + $vm.indexingMode(jsValue))
static EncodedJSValue JSC_HOST_CALL functionIndexingMode(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
if (!callFrame->argument(0).isObject())
return encodedJSUndefined();
WTF::StringPrintStream stream;
stream.print(IndexingTypeDump(callFrame->uncheckedArgument(0).getObject()->indexingMode()));
return JSValue::encode(jsString(globalObject->vm(), stream.toString()));
}
static EncodedJSValue JSC_HOST_CALL functionInlineCapacity(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
if (auto* object = jsDynamicCast<JSObject*>(vm, callFrame->argument(0)))
return JSValue::encode(jsNumber(object->structure(vm)->inlineCapacity()));
return encodedJSUndefined();
}
// Gets the dataLog dump of a given JS value as a string.
// Usage: $vm.print("value = " + $vm.value(jsValue))
static EncodedJSValue JSC_HOST_CALL functionValue(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
WTF::StringPrintStream stream;
for (unsigned i = 0; i < callFrame->argumentCount(); ++i) {
if (i)
stream.print(", ");
stream.print(callFrame->uncheckedArgument(i));
}
return JSValue::encode(jsString(globalObject->vm(), stream.toString()));
}
// Gets the pid of the current process.
// Usage: $vm.print("pid = " + $vm.getpid())
static EncodedJSValue JSC_HOST_CALL functionGetPID(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
return JSValue::encode(jsNumber(getCurrentProcessID()));
}
// Make the globalObject have a bad time. Does nothing if the object is not a JSGlobalObject.
// Usage: $vm.haveABadTime(globalObject)
static EncodedJSValue JSC_HOST_CALL functionHaveABadTime(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
JSValue objValue = callFrame->argument(0);
if (!objValue.isObject())
return JSValue::encode(jsBoolean(false));
JSObject* obj = asObject(objValue.asCell());
JSGlobalObject* target = jsDynamicCast<JSGlobalObject*>(vm, obj);
if (!target)
JSValue::encode(jsBoolean(false));
target->haveABadTime(vm);
return JSValue::encode(jsBoolean(true));
}
// Checks if the object (or its global if the object is not a global) is having a bad time.
// Usage: $vm.isHavingABadTime(obj)
static EncodedJSValue JSC_HOST_CALL functionIsHavingABadTime(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
JSValue objValue = callFrame->argument(0);
if (!objValue.isObject())
return JSValue::encode(jsUndefined());
JSObject* obj = asObject(objValue.asCell());
JSGlobalObject* target = jsDynamicCast<JSGlobalObject*>(vm, obj);
if (target)
JSValue::encode(jsBoolean(target->isHavingABadTime()));
target= obj->globalObject();
if (!target)
return JSValue::encode(jsUndefined());
return JSValue::encode(jsBoolean(target->isHavingABadTime()));
}
// Creates a new global object.
// Usage: $vm.createGlobalObject()
static EncodedJSValue JSC_HOST_CALL functionCreateGlobalObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
return JSValue::encode(JSGlobalObject::create(vm, JSGlobalObject::createStructure(vm, jsNull())));
}
static EncodedJSValue JSC_HOST_CALL functionCreateProxy(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(jsUndefined());
JSObject* jsTarget = asObject(target.asCell());
Structure* structure = JSProxy::createStructure(vm, globalObject, jsTarget->getPrototypeDirect(vm), ImpureProxyType);
JSProxy* proxy = JSProxy::create(vm, structure, jsTarget);
return JSValue::encode(proxy);
}
static EncodedJSValue JSC_HOST_CALL functionCreateRuntimeArray(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
JSLockHolder lock(callFrame);
RuntimeArray* array = RuntimeArray::create(callFrame);
return JSValue::encode(array);
}
static EncodedJSValue JSC_HOST_CALL functionCreateNullRopeString(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
return JSValue::encode(JSRopeString::createNullForTesting(vm));
}
static EncodedJSValue JSC_HOST_CALL functionCreateImpureGetter(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
JSValue target = callFrame->argument(0);
JSObject* delegate = nullptr;
if (target.isObject())
delegate = asObject(target.asCell());
Structure* structure = ImpureGetter::createStructure(vm, globalObject, jsNull());
ImpureGetter* result = ImpureGetter::create(vm, structure, delegate);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateCustomGetterObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = CustomGetter::createStructure(vm, globalObject, jsNull());
CustomGetter* result = CustomGetter::create(vm, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateDOMJITNodeObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = DOMJITNode::createStructure(vm, globalObject, DOMJITGetter::create(vm, DOMJITGetter::createStructure(vm, globalObject, jsNull())));
DOMJITNode* result = DOMJITNode::create(vm, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateDOMJITGetterObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = DOMJITGetter::createStructure(vm, globalObject, jsNull());
DOMJITGetter* result = DOMJITGetter::create(vm, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateDOMJITGetterComplexObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = DOMJITGetterComplex::createStructure(vm, globalObject, jsNull());
DOMJITGetterComplex* result = DOMJITGetterComplex::create(vm, globalObject, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateDOMJITFunctionObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = DOMJITFunctionObject::createStructure(vm, globalObject, jsNull());
DOMJITFunctionObject* result = DOMJITFunctionObject::create(vm, globalObject, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateDOMJITCheckSubClassObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = DOMJITCheckSubClassObject::createStructure(vm, globalObject, jsNull());
DOMJITCheckSubClassObject* result = DOMJITCheckSubClassObject::create(vm, globalObject, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionCreateDOMJITGetterBaseJSObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = DOMJITGetterBaseJSObject::createStructure(vm, globalObject, jsNull());
DOMJITGetterBaseJSObject* result = DOMJITGetterBaseJSObject::create(vm, structure);
return JSValue::encode(result);
}
#if ENABLE(WEBASSEMBLY)
static EncodedJSValue JSC_HOST_CALL functionCreateWasmStreamingParser(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
return JSValue::encode(WasmStreamingParser::create(vm, globalObject));
}
#endif
static EncodedJSValue JSC_HOST_CALL functionCreateStaticCustomAccessor(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Structure* structure = StaticCustomAccessor::createStructure(vm, globalObject, jsNull());
auto* result = StaticCustomAccessor::create(vm, structure);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionSetImpureGetterDelegate(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue base = callFrame->argument(0);
if (!base.isObject())
return JSValue::encode(jsUndefined());
JSValue delegate = callFrame->argument(1);
if (!delegate.isObject())
return JSValue::encode(jsUndefined());
ImpureGetter* impureGetter = jsDynamicCast<ImpureGetter*>(vm, asObject(base.asCell()));
if (UNLIKELY(!impureGetter)) {
throwTypeError(callFrame, scope, "argument is not an ImpureGetter"_s);
return encodedJSValue();
}
impureGetter->setDelegate(vm, asObject(delegate.asCell()));
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionCreateBuiltin(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (callFrame->argumentCount() < 1 || !callFrame->argument(0).isString())
return JSValue::encode(jsUndefined());
String functionText = asString(callFrame->argument(0))->value(callFrame);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
SourceCode source = makeSource(functionText, { });
JSFunction* func = JSFunction::create(vm, createBuiltinExecutable(vm, source, Identifier::fromString(vm, "foo"), ConstructorKind::None, ConstructAbility::CannotConstruct)->link(vm, nullptr, source), globalObject);
return JSValue::encode(func);
}
static EncodedJSValue JSC_HOST_CALL functionGetPrivateProperty(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (callFrame->argumentCount() < 2 || !callFrame->argument(1).isString())
return encodedJSUndefined();
String str = asString(callFrame->argument(1))->value(callFrame);
SymbolImpl* symbol = vm.propertyNames->lookUpPrivateName(Identifier::fromString(vm, str));
if (!symbol)
return throwVMError(callFrame, scope, "Unknown private name.");
RELEASE_AND_RETURN(scope, JSValue::encode(callFrame->argument(0).get(callFrame, symbol)));
}
static EncodedJSValue JSC_HOST_CALL functionCreateRoot(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
return JSValue::encode(Root::create(vm, globalObject));
}
static EncodedJSValue JSC_HOST_CALL functionCreateElement(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
Root* root = jsDynamicCast<Root*>(vm, callFrame->argument(0));
if (!root)
return JSValue::encode(throwException(callFrame, scope, createError(callFrame, "Cannot create Element without a Root."_s)));
return JSValue::encode(Element::create(vm, globalObject, root));
}
static EncodedJSValue JSC_HOST_CALL functionGetElement(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
Root* root = jsDynamicCast<Root*>(vm, callFrame->argument(0));
if (!root)
return JSValue::encode(jsUndefined());
Element* result = root->element();
return JSValue::encode(result ? result : jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionCreateSimpleObject(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
return JSValue::encode(SimpleObject::create(vm, globalObject));
}
static EncodedJSValue JSC_HOST_CALL functionGetHiddenValue(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
SimpleObject* simpleObject = jsDynamicCast<SimpleObject*>(vm, callFrame->argument(0));
if (UNLIKELY(!simpleObject)) {
throwTypeError(callFrame, scope, "Invalid use of getHiddenValue test function"_s);
return encodedJSValue();
}
return JSValue::encode(simpleObject->hiddenValue());
}
static EncodedJSValue JSC_HOST_CALL functionSetHiddenValue(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
SimpleObject* simpleObject = jsDynamicCast<SimpleObject*>(vm, callFrame->argument(0));
if (UNLIKELY(!simpleObject)) {
throwTypeError(callFrame, scope, "Invalid use of setHiddenValue test function"_s);
return encodedJSValue();
}
JSValue value = callFrame->argument(1);
simpleObject->setHiddenValue(vm, value);
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionShadowChickenFunctionsOnStack(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (auto* shadowChicken = vm.shadowChicken()) {
scope.release();
return JSValue::encode(shadowChicken->functionsOnStack(callFrame));
}
JSArray* result = constructEmptyArray(callFrame, 0);
RETURN_IF_EXCEPTION(scope, { });
StackVisitor::visit(callFrame, &vm, [&] (StackVisitor& visitor) -> StackVisitor::Status {
DollarVMAssertScope assertScope;
if (visitor->isInlinedFrame())
return StackVisitor::Continue;
if (visitor->isWasmFrame())
return StackVisitor::Continue;
result->push(callFrame, jsCast<JSObject*>(visitor->callee().asCell()));
scope.releaseAssertNoException(); // This function is only called from tests.
return StackVisitor::Continue;
});
RETURN_IF_EXCEPTION(scope, { });
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionSetGlobalConstRedeclarationShouldNotThrow(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
vm.setGlobalConstRedeclarationShouldThrow(false);
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionFindTypeForExpression(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
RELEASE_ASSERT(vm.typeProfiler());
vm.typeProfilerLog()->processLogEntries(vm, "jsc Testing API: functionFindTypeForExpression"_s);
JSValue functionValue = callFrame->argument(0);
RELEASE_ASSERT(functionValue.isFunction(vm));
FunctionExecutable* executable = (jsDynamicCast<JSFunction*>(vm, functionValue.asCell()->getObject()))->jsExecutable();
RELEASE_ASSERT(callFrame->argument(1).isString());
String substring = asString(callFrame->argument(1))->value(callFrame);
String sourceCodeText = executable->source().view().toString();
unsigned offset = static_cast<unsigned>(sourceCodeText.find(substring) + executable->source().startOffset());
String jsonString = vm.typeProfiler()->typeInformationForExpressionAtOffset(TypeProfilerSearchDescriptorNormal, offset, executable->sourceID(), vm);
return JSValue::encode(JSONParse(callFrame, jsonString));
}
static EncodedJSValue JSC_HOST_CALL functionReturnTypeFor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
RELEASE_ASSERT(vm.typeProfiler());
vm.typeProfilerLog()->processLogEntries(vm, "jsc Testing API: functionReturnTypeFor"_s);
JSValue functionValue = callFrame->argument(0);
RELEASE_ASSERT(functionValue.isFunction(vm));
FunctionExecutable* executable = (jsDynamicCast<JSFunction*>(vm, functionValue.asCell()->getObject()))->jsExecutable();
unsigned offset = executable->typeProfilingStartOffset(vm);
String jsonString = vm.typeProfiler()->typeInformationForExpressionAtOffset(TypeProfilerSearchDescriptorFunctionReturn, offset, executable->sourceID(), vm);
return JSValue::encode(JSONParse(callFrame, jsonString));
}
static EncodedJSValue JSC_HOST_CALL functionFlattenDictionaryObject(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSValue value = callFrame->argument(0);
RELEASE_ASSERT(value.isObject() && value.getObject()->structure()->isDictionary());
value.getObject()->flattenDictionaryObject(vm);
return encodedJSUndefined();
}
static EncodedJSValue JSC_HOST_CALL functionDumpBasicBlockExecutionRanges(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
RELEASE_ASSERT(vm.controlFlowProfiler());
vm.controlFlowProfiler()->dumpData();
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionHasBasicBlockExecuted(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
RELEASE_ASSERT(vm.controlFlowProfiler());
JSValue functionValue = callFrame->argument(0);
RELEASE_ASSERT(functionValue.isFunction(vm));
FunctionExecutable* executable = (jsDynamicCast<JSFunction*>(vm, functionValue.asCell()->getObject()))->jsExecutable();
RELEASE_ASSERT(callFrame->argument(1).isString());
String substring = asString(callFrame->argument(1))->value(callFrame);
String sourceCodeText = executable->source().view().toString();
RELEASE_ASSERT(sourceCodeText.contains(substring));
int offset = sourceCodeText.find(substring) + executable->source().startOffset();
bool hasExecuted = vm.controlFlowProfiler()->hasBasicBlockAtTextOffsetBeenExecuted(offset, executable->sourceID(), vm);
return JSValue::encode(jsBoolean(hasExecuted));
}
static EncodedJSValue JSC_HOST_CALL functionBasicBlockExecutionCount(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
RELEASE_ASSERT(vm.controlFlowProfiler());
JSValue functionValue = callFrame->argument(0);
RELEASE_ASSERT(functionValue.isFunction(vm));
FunctionExecutable* executable = (jsDynamicCast<JSFunction*>(vm, functionValue.asCell()->getObject()))->jsExecutable();
RELEASE_ASSERT(callFrame->argument(1).isString());
String substring = asString(callFrame->argument(1))->value(callFrame);
String sourceCodeText = executable->source().view().toString();
RELEASE_ASSERT(sourceCodeText.contains(substring));
int offset = sourceCodeText.find(substring) + executable->source().startOffset();
size_t executionCount = vm.controlFlowProfiler()->basicBlockExecutionCountAtTextOffset(offset, executable->sourceID(), vm);
return JSValue::encode(JSValue(executionCount));
}
static EncodedJSValue JSC_HOST_CALL functionEnableExceptionFuzz(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
Options::useExceptionFuzz() = true;
return JSValue::encode(jsUndefined());
}
class DoNothingDebugger final : public Debugger {
WTF_MAKE_NONCOPYABLE(DoNothingDebugger);
WTF_MAKE_FAST_ALLOCATED;
public:
DoNothingDebugger(VM& vm)
: Debugger(vm)
{
DollarVMAssertScope assertScope;
setSuppressAllPauses(true);
}
private:
void sourceParsed(ExecState*, SourceProvider*, int, const WTF::String&) override
{
DollarVMAssertScope assertScope;
}
};
static EncodedJSValue changeDebuggerModeWhenIdle(ExecState* exec, OptionSet<CodeGenerationMode> codeGenerationMode)
{
DollarVMAssertScope assertScope;
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
bool debuggerRequested = codeGenerationMode.contains(CodeGenerationMode::Debugger);
if (debuggerRequested == globalObject->hasDebugger())
return JSValue::encode(jsUndefined());
VM* vm = &exec->vm();
vm->whenIdle([=] () {
DollarVMAssertScope assertScope;
if (debuggerRequested) {
Debugger* debugger = new DoNothingDebugger(globalObject->vm());
globalObject->setDebugger(debugger);
debugger->activateBreakpoints(); // Also deletes all code.
} else {
Debugger* debugger = globalObject->debugger();
debugger->deactivateBreakpoints(); // Also deletes all code.
globalObject->setDebugger(nullptr);
delete debugger;
}
});
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionEnableDebuggerModeWhenIdle(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
return changeDebuggerModeWhenIdle(callFrame, { CodeGenerationMode::Debugger });
}
static EncodedJSValue JSC_HOST_CALL functionDisableDebuggerModeWhenIdle(JSGlobalObject*, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
return changeDebuggerModeWhenIdle(callFrame, { });
}
static EncodedJSValue JSC_HOST_CALL functionDeleteAllCodeWhenIdle(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM* vm = &globalObject->vm();
vm->whenIdle([=] () {
DollarVMAssertScope assertScope;
vm->deleteAllCode(PreventCollectionAndDeleteAllCode);
});
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL functionGlobalObjectCount(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
return JSValue::encode(jsNumber(globalObject->vm().heap.globalObjectCount()));
}
static EncodedJSValue JSC_HOST_CALL functionGlobalObjectForObject(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
JSValue value = callFrame->argument(0);
RELEASE_ASSERT(value.isObject());
JSGlobalObject* result = jsCast<JSObject*>(value)->globalObject(globalObject->vm());
RELEASE_ASSERT(result);
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionGetGetterSetter(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue value = callFrame->argument(0);
if (!value.isObject())
return JSValue::encode(jsUndefined());
JSValue property = callFrame->argument(1);
if (!property.isString())
return JSValue::encode(jsUndefined());
auto propertyName = asString(property)->toIdentifier(callFrame);
RETURN_IF_EXCEPTION(scope, { });
PropertySlot slot(value, PropertySlot::InternalMethodType::VMInquiry);
value.getPropertySlot(callFrame, propertyName, slot);
RETURN_IF_EXCEPTION(scope, { });
JSValue result;
if (slot.isCacheableGetter())
result = slot.getterSetter();
else
result = jsNull();
return JSValue::encode(result);
}
static EncodedJSValue JSC_HOST_CALL functionLoadGetterFromGetterSetter(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
GetterSetter* getterSetter = jsDynamicCast<GetterSetter*>(vm, callFrame->argument(0));
if (UNLIKELY(!getterSetter)) {
throwTypeError(callFrame, scope, "Invalid use of loadGetterFromGetterSetter test function: argument is not a GetterSetter"_s);
return encodedJSValue();
}
JSObject* getter = getterSetter->getter();
RELEASE_ASSERT(getter);
return JSValue::encode(getter);
}
static EncodedJSValue JSC_HOST_CALL functionCreateCustomTestGetterSetter(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
return JSValue::encode(JSTestCustomGetterSetter::create(vm, globalObject, JSTestCustomGetterSetter::createStructure(vm, globalObject)));
}
static EncodedJSValue JSC_HOST_CALL functionDeltaBetweenButterflies(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
JSObject* a = jsDynamicCast<JSObject*>(vm, callFrame->argument(0));
JSObject* b = jsDynamicCast<JSObject*>(vm, callFrame->argument(1));
if (!a || !b)
return JSValue::encode(jsNumber(PNaN));
ptrdiff_t delta = bitwise_cast<char*>(a->butterfly()) - bitwise_cast<char*>(b->butterfly());
if (delta < 0)
return JSValue::encode(jsNumber(PNaN));
if (delta > std::numeric_limits<int32_t>::max())
return JSValue::encode(jsNumber(PNaN));
return JSValue::encode(jsNumber(static_cast<int32_t>(delta)));
}
static EncodedJSValue JSC_HOST_CALL functionTotalGCTime(JSGlobalObject* globalObject, CallFrame*)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
return JSValue::encode(jsNumber(vm.heap.totalGCTime().seconds()));
}
static EncodedJSValue JSC_HOST_CALL functionParseCount(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
return JSValue::encode(jsNumber(globalParseCount.load()));
}
static EncodedJSValue JSC_HOST_CALL functionIsWasmSupported(JSGlobalObject*, CallFrame*)
{
DollarVMAssertScope assertScope;
#if ENABLE(WEBASSEMBLY)
return JSValue::encode(jsBoolean(Wasm::isSupported()));
#else
return JSValue::encode(jsBoolean(false));
#endif
}
void JSDollarVM::finishCreation(VM& vm)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
JSGlobalObject* globalObject = this->globalObject(vm);
auto addFunction = [&] (VM& vm, const char* name, NativeFunction function, unsigned arguments) {
DollarVMAssertScope assertScope;
JSDollarVM::addFunction(vm, globalObject, name, function, arguments);
};
auto addConstructibleFunction = [&] (VM& vm, const char* name, NativeFunction function, unsigned arguments) {
DollarVMAssertScope assertScope;
JSDollarVM::addConstructibleFunction(vm, globalObject, name, function, arguments);
};
addFunction(vm, "abort", functionCrash, 0);
addFunction(vm, "crash", functionCrash, 0);
addFunction(vm, "breakpoint", functionBreakpoint, 0);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "dfgTrue"), 0, functionDFGTrue, DFGTrueIntrinsic, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "ftlTrue"), 0, functionFTLTrue, FTLTrueIntrinsic, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "cpuMfence"), 0, functionCpuMfence, CPUMfenceIntrinsic, 0);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "cpuRdtsc"), 0, functionCpuRdtsc, CPURdtscIntrinsic, 0);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "cpuCpuid"), 0, functionCpuCpuid, CPUCpuidIntrinsic, 0);
putDirectNativeFunction(vm, globalObject, Identifier::fromString(vm, "cpuPause"), 0, functionCpuPause, CPUPauseIntrinsic, 0);
addFunction(vm, "cpuClflush", functionCpuClflush, 2);
addFunction(vm, "llintTrue", functionLLintTrue, 0);
addFunction(vm, "jitTrue", functionJITTrue, 0);
addFunction(vm, "noInline", functionNoInline, 1);
addFunction(vm, "gc", functionGC, 0);
addFunction(vm, "edenGC", functionEdenGC, 0);
addFunction(vm, "dumpSubspaceHashes", functionDumpSubspaceHashes, 0);
addFunction(vm, "callFrame", functionCallFrame, 1);
addFunction(vm, "codeBlockFor", functionCodeBlockFor, 1);
addFunction(vm, "codeBlockForFrame", functionCodeBlockForFrame, 1);
addFunction(vm, "dumpSourceFor", functionDumpSourceFor, 1);
addFunction(vm, "dumpBytecodeFor", functionDumpBytecodeFor, 1);
addFunction(vm, "dataLog", functionDataLog, 1);
addFunction(vm, "print", functionPrint, 1);
addFunction(vm, "dumpCallFrame", functionDumpCallFrame, 0);
addFunction(vm, "dumpStack", functionDumpStack, 0);
addFunction(vm, "dumpRegisters", functionDumpRegisters, 1);
addFunction(vm, "dumpCell", functionDumpCell, 1);
addFunction(vm, "indexingMode", functionIndexingMode, 1);
addFunction(vm, "inlineCapacity", functionInlineCapacity, 1);
addFunction(vm, "value", functionValue, 1);
addFunction(vm, "getpid", functionGetPID, 0);
addFunction(vm, "haveABadTime", functionHaveABadTime, 1);
addFunction(vm, "isHavingABadTime", functionIsHavingABadTime, 1);
addFunction(vm, "createGlobalObject", functionCreateGlobalObject, 0);
addFunction(vm, "createProxy", functionCreateProxy, 1);
addFunction(vm, "createRuntimeArray", functionCreateRuntimeArray, 0);
addFunction(vm, "createNullRopeString", functionCreateNullRopeString, 0);
addFunction(vm, "createImpureGetter", functionCreateImpureGetter, 1);
addFunction(vm, "createCustomGetterObject", functionCreateCustomGetterObject, 0);
addFunction(vm, "createDOMJITNodeObject", functionCreateDOMJITNodeObject, 0);
addFunction(vm, "createDOMJITGetterObject", functionCreateDOMJITGetterObject, 0);
addFunction(vm, "createDOMJITGetterComplexObject", functionCreateDOMJITGetterComplexObject, 0);
addFunction(vm, "createDOMJITFunctionObject", functionCreateDOMJITFunctionObject, 0);
addFunction(vm, "createDOMJITCheckSubClassObject", functionCreateDOMJITCheckSubClassObject, 0);
addFunction(vm, "createDOMJITGetterBaseJSObject", functionCreateDOMJITGetterBaseJSObject, 0);
addFunction(vm, "createBuiltin", functionCreateBuiltin, 2);
#if ENABLE(WEBASSEMBLY)
addFunction(vm, "createWasmStreamingParser", functionCreateWasmStreamingParser, 0);
#endif
addFunction(vm, "createStaticCustomAccessor", functionCreateStaticCustomAccessor, 0);
addFunction(vm, "getPrivateProperty", functionGetPrivateProperty, 2);
addFunction(vm, "setImpureGetterDelegate", functionSetImpureGetterDelegate, 2);
addConstructibleFunction(vm, "Root", functionCreateRoot, 0);
addConstructibleFunction(vm, "Element", functionCreateElement, 1);
addFunction(vm, "getElement", functionGetElement, 1);
addConstructibleFunction(vm, "SimpleObject", functionCreateSimpleObject, 0);
addFunction(vm, "getHiddenValue", functionGetHiddenValue, 1);
addFunction(vm, "setHiddenValue", functionSetHiddenValue, 2);
addFunction(vm, "shadowChickenFunctionsOnStack", functionShadowChickenFunctionsOnStack, 0);
addFunction(vm, "setGlobalConstRedeclarationShouldNotThrow", functionSetGlobalConstRedeclarationShouldNotThrow, 0);
addFunction(vm, "findTypeForExpression", functionFindTypeForExpression, 2);
addFunction(vm, "returnTypeFor", functionReturnTypeFor, 1);
addFunction(vm, "flattenDictionaryObject", functionFlattenDictionaryObject, 1);
addFunction(vm, "dumpBasicBlockExecutionRanges", functionDumpBasicBlockExecutionRanges , 0);
addFunction(vm, "hasBasicBlockExecuted", functionHasBasicBlockExecuted, 2);
addFunction(vm, "basicBlockExecutionCount", functionBasicBlockExecutionCount, 2);
addFunction(vm, "enableExceptionFuzz", functionEnableExceptionFuzz, 0);
addFunction(vm, "enableDebuggerModeWhenIdle", functionEnableDebuggerModeWhenIdle, 0);
addFunction(vm, "disableDebuggerModeWhenIdle", functionDisableDebuggerModeWhenIdle, 0);
addFunction(vm, "deleteAllCodeWhenIdle", functionDeleteAllCodeWhenIdle, 0);
addFunction(vm, "globalObjectCount", functionGlobalObjectCount, 0);
addFunction(vm, "globalObjectForObject", functionGlobalObjectForObject, 1);
addFunction(vm, "getGetterSetter", functionGetGetterSetter, 2);
addFunction(vm, "loadGetterFromGetterSetter", functionLoadGetterFromGetterSetter, 1);
addFunction(vm, "createCustomTestGetterSetter", functionCreateCustomTestGetterSetter, 1);
addFunction(vm, "deltaBetweenButterflies", functionDeltaBetweenButterflies, 2);
addFunction(vm, "totalGCTime", functionTotalGCTime, 0);
addFunction(vm, "parseCount", functionParseCount, 0);
addFunction(vm, "isWasmSupported", functionIsWasmSupported, 0);
}
void JSDollarVM::addFunction(VM& vm, JSGlobalObject* globalObject, const char* name, NativeFunction function, unsigned arguments)
{
DollarVMAssertScope assertScope;
Identifier identifier = Identifier::fromString(vm, name);
putDirect(vm, identifier, JSFunction::create(vm, globalObject, arguments, identifier.string(), function));
}
void JSDollarVM::addConstructibleFunction(VM& vm, JSGlobalObject* globalObject, const char* name, NativeFunction function, unsigned arguments)
{
DollarVMAssertScope assertScope;
Identifier identifier = Identifier::fromString(vm, name);
putDirect(vm, identifier, JSFunction::create(vm, globalObject, arguments, identifier.string(), function, NoIntrinsic, function));
}
} // namespace JSC