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JITOperations.cpp
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4462 lines (3588 loc) · 198 KB
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/*
* Copyright (C) 2013-2023 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 "JITOperations.h"
#if ENABLE(JIT)
#include "ArithProfile.h"
#include "ArrayConstructor.h"
#include "CacheableIdentifierInlines.h"
#include "CodeBlockInlines.h"
#include "CommonSlowPathsInlines.h"
#include "DFGDriver.h"
#include "DFGOSREntry.h"
#include "DFGThunks.h"
#include "Debugger.h"
#include "ExceptionFuzz.h"
#include "FrameTracers.h"
#include "GetterSetter.h"
#include "ICStats.h"
#include "Interpreter.h"
#include "JIT.h"
#include "JITExceptions.h"
#include "JITToDFGDeferredCompilationCallback.h"
#include "JITWorklist.h"
#include "JSAsyncFunction.h"
#include "JSAsyncGenerator.h"
#include "JSAsyncGeneratorFunction.h"
#include "JSBoundFunction.h"
#include "JSCInlines.h"
#include "JSCPtrTag.h"
#include "JSGeneratorFunction.h"
#include "JSGlobalObjectFunctions.h"
#include "JSInternalPromise.h"
#include "JSLexicalEnvironment.h"
#include "JSRemoteFunction.h"
#include "JSWithScope.h"
#include "LLIntEntrypoint.h"
#include "MegamorphicCache.h"
#include "ObjectConstructor.h"
#include "PropertyName.h"
#include "RegExpObject.h"
#include "RepatchInlines.h"
#include "ShadowChicken.h"
#include "StructureStubInfo.h"
#include "SuperSampler.h"
#include "ThunkGenerators.h"
#include "TypeProfilerLog.h"
#include "VMInlines.h"
#include "VMTrapsInlines.h"
IGNORE_WARNINGS_BEGIN("frame-address")
namespace JSC {
ALWAYS_INLINE ICSlowPathCallFrameTracer::ICSlowPathCallFrameTracer(VM& vm, CallFrame* callFrame, StructureStubInfo* stubInfo)
#if ASSERT_ENABLED
: m_vm(vm)
#endif
{
UNUSED_PARAM(vm);
UNUSED_PARAM(callFrame);
ASSERT(callFrame);
ASSERT(reinterpret_cast<void*>(callFrame) < reinterpret_cast<void*>(vm.topEntryFrame));
assertStackPointerIsAligned();
#if USE(BUILTIN_FRAME_ADDRESS)
// If ASSERT_ENABLED and USE(BUILTIN_FRAME_ADDRESS), prepareCallOperation() will put the frame pointer into vm.topCallFrame.
// We can ensure here that a call to prepareCallOperation() (or its equivalent) is not missing by comparing vm.topCallFrame to
// the result of __builtin_frame_address which is passed in as callFrame.
ASSERT(vm.topCallFrame == callFrame);
vm.topCallFrame = callFrame;
#endif
callFrame->setCallSiteIndex(stubInfo->callSiteIndex);
}
ALWAYS_INLINE JSValue profiledAdd(JSGlobalObject* globalObject, JSValue op1, JSValue op2, BinaryArithProfile& arithProfile)
{
arithProfile.observeLHSAndRHS(op1, op2);
JSValue result = jsAdd(globalObject, op1, op2);
arithProfile.observeResult(result);
return result;
}
#if COMPILER(MSVC)
extern "C" void * _ReturnAddress(void);
#pragma intrinsic(_ReturnAddress)
#define OUR_RETURN_ADDRESS _ReturnAddress()
#else
// FIXME (see rdar://72897291): Work around a Clang bug where __builtin_return_address()
// sometimes gives us a signed pointer, and sometimes does not.
#define OUR_RETURN_ADDRESS removeCodePtrTag(__builtin_return_address(0))
#endif
JSC_DEFINE_JIT_OPERATION(operationThrowStackOverflowError, void, (CodeBlock* codeBlock))
{
// We pass in our own code block, because the callframe hasn't been populated.
VM& vm = codeBlock->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
auto scope = DECLARE_THROW_SCOPE(vm);
callFrame->convertToStackOverflowFrame(vm, codeBlock);
throwStackOverflowError(codeBlock->globalObject(), scope);
}
JSC_DEFINE_JIT_OPERATION(operationThrowStackOverflowErrorFromThunk, void, (JSGlobalObject* globalObject))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
auto scope = DECLARE_THROW_SCOPE(vm);
throwStackOverflowError(globalObject, scope);
genericUnwind(vm, callFrame);
ASSERT(vm.targetMachinePCForThrow);
}
static JSValue getWrappedValue(JSGlobalObject* globalObject, JSGlobalObject* targetGlobalObject, JSValue value)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (!value.isObject())
RELEASE_AND_RETURN(scope, value);
if (value.isCallable())
RELEASE_AND_RETURN(scope, JSRemoteFunction::tryCreate(targetGlobalObject, vm, static_cast<JSObject*>(value.asCell())));
throwTypeError(globalObject, scope, "value passing between realms must be callable or primitive"_s);
return jsUndefined();
}
JSC_DEFINE_JIT_OPERATION(operationGetWrappedValueForTarget, EncodedJSValue, (JSRemoteFunction* callee, EncodedJSValue encodedValue))
{
JSGlobalObject* globalObject = callee->globalObject();
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
ASSERT(isRemoteFunction(callee));
JSGlobalObject* targetGlobalObject = callee->targetFunction()->globalObject();
return JSValue::encode(getWrappedValue(globalObject, targetGlobalObject, JSValue::decode(encodedValue)));
}
JSC_DEFINE_JIT_OPERATION(operationGetWrappedValueForCaller, EncodedJSValue, (JSRemoteFunction* callee, EncodedJSValue encodedValue))
{
JSGlobalObject* globalObject = callee->globalObject();
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
ASSERT(isRemoteFunction(callee));
auto scope = DECLARE_THROW_SCOPE(vm);
RELEASE_AND_RETURN(scope, JSValue::encode(getWrappedValue(globalObject, globalObject, JSValue::decode(encodedValue))));
}
JSC_DEFINE_JIT_OPERATION(operationMaterializeRemoteFunctionTargetCode, UGPRPair, (JSRemoteFunction* callee))
{
JSGlobalObject* globalObject = callee->globalObject();
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
auto throwScope = DECLARE_THROW_SCOPE(vm);
ASSERT(isRemoteFunction(callee));
auto* targetFunction = jsCast<JSFunction*>(callee->targetFunction()); // We call this function only when JSRemoteFunction's target is JSFunction.
ExecutableBase* executable = targetFunction->executable();
// Force the executable to cache its arity entrypoint.
{
DeferTraps deferTraps(vm); // We can't jettison any code until after we link the call.
CodeBlock* codeBlockSlot = nullptr;
if (!executable->isHostFunction()) {
JSScope* scope = targetFunction->scopeUnchecked();
FunctionExecutable* functionExecutable = static_cast<FunctionExecutable*>(executable);
functionExecutable->prepareForExecution<FunctionExecutable>(vm, targetFunction, scope, CodeForCall, codeBlockSlot);
RETURN_IF_EXCEPTION(throwScope, encodeResult(nullptr, nullptr));
}
return encodeResult(executable->entrypointFor(CodeForCall, MustCheckArity).taggedPtr(), codeBlockSlot);
}
}
JSC_DEFINE_JIT_OPERATION(operationThrowRemoteFunctionException, EncodedJSValue, (JSRemoteFunction* callee))
{
JSGlobalObject* globalObject = callee->globalObject();
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
ASSERT(isRemoteFunction(callee));
auto scope = DECLARE_THROW_SCOPE(vm);
Exception* exception = scope.exception();
// We should only be here when "rethrowing" an exception
RELEASE_ASSERT(exception);
if (UNLIKELY(vm.isTerminationException(exception))) {
scope.release();
return { };
}
JSValue exceptionValue = exception->value();
scope.clearException();
String exceptionString = exceptionValue.toWTFString(globalObject);
Exception* toStringException = scope.exception();
if (UNLIKELY(toStringException && vm.isTerminationException(toStringException))) {
scope.release();
return { };
}
scope.clearException();
if (exceptionString.length())
return throwVMTypeError(globalObject, scope, exceptionString);
return throwVMTypeError(globalObject, scope);
}
JSC_DEFINE_JIT_OPERATION(operationThrowIteratorResultIsNotObject, void, (JSGlobalObject* globalObject))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
auto scope = DECLARE_THROW_SCOPE(vm);
throwTypeError(globalObject, scope, "Iterator result interface is not an object."_s);
}
JSC_DEFINE_JIT_OPERATION(operationTryGetByIdGaveUp, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
stubInfo->tookSlowPath = true;
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::VMInquiry, &vm);
baseValue.getPropertySlot(globalObject, ident, slot);
return JSValue::encode(slot.getPureResult());
}
JSC_DEFINE_JIT_OPERATION(operationTryGetByIdGeneric, EncodedJSValue, (JSGlobalObject* globalObject, EncodedJSValue base, uintptr_t rawCacheableIdentifier))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::VMInquiry, &vm);
baseValue.getPropertySlot(globalObject, ident, slot);
return JSValue::encode(slot.getPureResult());
}
JSC_DEFINE_JIT_OPERATION(operationTryGetByIdOptimize, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::VMInquiry, &vm);
baseValue.getPropertySlot(globalObject, ident, slot);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
CodeBlock* codeBlock = callFrame->codeBlock();
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseValue.structureOrNull(), identifier) && !slot.isTaintedByOpaqueObject() && (slot.isCacheableValue() || slot.isCacheableGetter() || slot.isUnset()))
repatchGetBy(globalObject, codeBlock, baseValue, identifier, slot, *stubInfo, GetByKind::TryById);
return JSValue::encode(slot.getPureResult());
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdDirectGaveUp, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
stubInfo->tookSlowPath = true;
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::GetOwnProperty);
bool found = baseValue.getOwnPropertySlot(globalObject, ident, slot);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
RELEASE_AND_RETURN(scope, JSValue::encode(found ? slot.getValue(globalObject, ident) : jsUndefined()));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdDirectGeneric, EncodedJSValue, (JSGlobalObject* globalObject, EncodedJSValue base, uintptr_t rawCacheableIdentifier))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
auto scope = DECLARE_THROW_SCOPE(vm);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::GetOwnProperty);
bool found = baseValue.getOwnPropertySlot(globalObject, ident, slot);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
RELEASE_AND_RETURN(scope, JSValue::encode(found ? slot.getValue(globalObject, ident) : jsUndefined()));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdDirectOptimize, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::GetOwnProperty);
bool found = baseValue.getOwnPropertySlot(globalObject, ident, slot);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
CodeBlock* codeBlock = callFrame->codeBlock();
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseValue.structureOrNull(), identifier))
repatchGetBy(globalObject, codeBlock, baseValue, identifier, slot, *stubInfo, GetByKind::ByIdDirect);
RELEASE_AND_RETURN(scope, JSValue::encode(found ? slot.getValue(globalObject, ident) : jsUndefined()));
}
static ALWAYS_INLINE JSValue getByIdMegamorphic(JSGlobalObject* globalObject, VM& vm, CallFrame* callFrame, StructureStubInfo* stubInfo, JSValue baseValue, JSValue thisValue, CacheableIdentifier identifier, GetByKind kind)
{
auto* uid = identifier.uid();
PropertySlot slot(thisValue, PropertySlot::InternalMethodType::Get);
if (UNLIKELY(!baseValue.isObject())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchGetBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
return baseValue.get(globalObject, uid, slot);
}
JSObject* baseObject = asObject(baseValue);
JSObject* object = baseObject;
bool cacheable = true;
while (true) {
if (UNLIKELY(TypeInfo::overridesGetOwnPropertySlot(object->inlineTypeFlags()) && object->type() != ArrayType && object->type() != JSFunctionType && object != globalObject->arrayPrototype())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchGetBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
if (object->getNonIndexPropertySlot(globalObject, uid, slot))
return slot.getValue(globalObject, uid);
return jsUndefined();
}
Structure* structure = object->structure();
bool hasProperty = object->getOwnNonIndexPropertySlot(vm, structure, uid, slot);
structure = object->structure(); // Reload it again since static-class-table can cause transition. But this transition only affects on this Structure.
cacheable &= structure->propertyAccessesAreCacheable();
if (hasProperty) {
if (LIKELY(cacheable && slot.isCacheableValue() && slot.cachedOffset() <= MegamorphicCache::maxOffset)) {
if (slot.slotBase() == baseObject || !baseObject->structure()->isDictionary())
vm.megamorphicCache()->initAsHit(baseObject->structureID(), uid, slot.slotBase(), slot.cachedOffset(), slot.slotBase() == baseObject);
else {
if (UNLIKELY(baseObject->structure()->hasBeenFlattenedBefore())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchGetBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
}
}
} else {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchGetBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
}
return slot.getValue(globalObject, uid);
}
cacheable &= structure->propertyAccessesAreCacheableForAbsence();
cacheable &= structure->hasMonoProto();
JSValue prototype = object->getPrototypeDirect();
if (!prototype.isObject()) {
if (LIKELY(cacheable)) {
if (LIKELY(!baseObject->structure()->isDictionary())) {
vm.megamorphicCache()->initAsMiss(baseObject->structureID(), uid);
return jsUndefined();
}
if (LIKELY(!baseObject->structure()->hasBeenFlattenedBefore()))
return jsUndefined();
}
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchGetBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
return jsUndefined();
}
object = asObject(prototype);
}
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdMegamorphic, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
JSValue baseValue = JSValue::decode(base);
CacheableIdentifier identifier = stubInfo->identifier();
return JSValue::encode(getByIdMegamorphic(globalObject, vm, callFrame, stubInfo, baseValue, baseValue, identifier, GetByKind::ById));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdMegamorphicGeneric, EncodedJSValue, (JSGlobalObject* globalObject, EncodedJSValue base, uintptr_t rawCacheableIdentifier))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
JSValue baseValue = JSValue::decode(base);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
return JSValue::encode(getByIdMegamorphic(globalObject, vm, callFrame, nullptr, baseValue, baseValue, identifier, GetByKind::ById));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdGaveUp, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
stubInfo->tookSlowPath = true;
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::Get);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue result = baseValue.get(globalObject, ident, slot);
LOG_IC((ICEvent::OperationGetById, baseValue.classInfoOrNull(), ident, baseValue == slot.slotBase()));
return JSValue::encode(result);
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdGeneric, EncodedJSValue, (JSGlobalObject* globalObject, EncodedJSValue base, uintptr_t rawCacheableIdentifier))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
JSValue baseValue = JSValue::decode(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::Get);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue result = baseValue.get(globalObject, ident, slot);
LOG_IC((ICEvent::OperationGetByIdGeneric, baseValue.classInfoOrNull(), ident, baseValue == slot.slotBase()));
return JSValue::encode(result);
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdOptimize, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
return JSValue::encode(baseValue.getPropertySlot(globalObject, ident, [&] (bool found, PropertySlot& slot) -> JSValue {
LOG_IC((ICEvent::OperationGetByIdOptimize, baseValue.classInfoOrNull(), ident, baseValue == slot.slotBase()));
CodeBlock* codeBlock = callFrame->codeBlock();
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseValue.structureOrNull(), identifier))
repatchGetBy(globalObject, codeBlock, baseValue, identifier, slot, *stubInfo, GetByKind::ById);
return found ? slot.getValue(globalObject, ident) : jsUndefined();
}));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdWithThisGaveUp, EncodedJSValue, (EncodedJSValue base, EncodedJSValue thisEncoded, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
stubInfo->tookSlowPath = true;
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
JSValue thisValue = JSValue::decode(thisEncoded);
PropertySlot slot(thisValue, PropertySlot::InternalMethodType::Get);
return JSValue::encode(baseValue.get(globalObject, ident, slot));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdWithThisGeneric, EncodedJSValue, (JSGlobalObject* globalObject, EncodedJSValue base, EncodedJSValue thisEncoded, uintptr_t rawCacheableIdentifier))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
JSValue thisValue = JSValue::decode(thisEncoded);
PropertySlot slot(thisValue, PropertySlot::InternalMethodType::Get);
return JSValue::encode(baseValue.get(globalObject, ident, slot));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdWithThisOptimize, EncodedJSValue, (EncodedJSValue base, EncodedJSValue thisEncoded, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
JSValue thisValue = JSValue::decode(thisEncoded);
PropertySlot slot(thisValue, PropertySlot::InternalMethodType::Get);
return JSValue::encode(baseValue.getPropertySlot(globalObject, ident, slot, [&] (bool found, PropertySlot& slot) -> JSValue {
LOG_IC((ICEvent::OperationGetByIdWithThisOptimize, baseValue.classInfoOrNull(), ident, baseValue == slot.slotBase()));
CodeBlock* codeBlock = callFrame->codeBlock();
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseValue.structureOrNull(), identifier))
repatchGetBy(globalObject, codeBlock, baseValue, identifier, slot, *stubInfo, GetByKind::ByIdWithThis);
return found ? slot.getValue(globalObject, ident) : jsUndefined();
}));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdWithThisMegamorphic, EncodedJSValue, (EncodedJSValue base, EncodedJSValue encodedThis, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
CacheableIdentifier identifier = stubInfo->identifier();
return JSValue::encode(getByIdMegamorphic(globalObject, vm, callFrame, stubInfo, JSValue::decode(base), JSValue::decode(encodedThis), identifier, GetByKind::ByIdWithThis));
}
JSC_DEFINE_JIT_OPERATION(operationGetByIdWithThisMegamorphicGeneric, EncodedJSValue, (JSGlobalObject* globalObject, EncodedJSValue base, EncodedJSValue encodedThis, uintptr_t rawCacheableIdentifier))
{
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
return JSValue::encode(getByIdMegamorphic(globalObject, vm, callFrame, nullptr, JSValue::decode(base), JSValue::decode(encodedThis), identifier, GetByKind::ByIdWithThis));
}
JSC_DEFINE_JIT_OPERATION(operationInByIdGaveUp, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
stubInfo->tookSlowPath = true;
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return JSValue::encode(jsUndefined());
}
JSObject* baseObject = asObject(baseValue);
LOG_IC((ICEvent::OperationInByIdGeneric, baseObject->classInfo(), ident));
scope.release();
PropertySlot slot(baseObject, PropertySlot::InternalMethodType::HasProperty);
return JSValue::encode(jsBoolean(baseObject->getPropertySlot(globalObject, ident, slot)));
}
JSC_DEFINE_JIT_OPERATION(operationInByIdOptimize, EncodedJSValue, (EncodedJSValue base, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
JSValue baseValue = JSValue::decode(base);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return JSValue::encode(jsUndefined());
}
JSObject* baseObject = asObject(baseValue);
LOG_IC((ICEvent::OperationInByIdOptimize, baseObject->classInfo(), ident));
PropertySlot slot(baseObject, PropertySlot::InternalMethodType::HasProperty);
bool found = baseObject->getPropertySlot(globalObject, ident, slot);
RETURN_IF_EXCEPTION(scope, { });
CodeBlock* codeBlock = callFrame->codeBlock();
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseObject->structure(), identifier))
repatchInBy(globalObject, codeBlock, baseObject, identifier, found, slot, *stubInfo, InByKind::ById);
return JSValue::encode(jsBoolean(found));
}
JSC_DEFINE_JIT_OPERATION(operationInByValOptimize, EncodedJSValue, (EncodedJSValue encodedBase, EncodedJSValue encodedKey, JSGlobalObject* globalObject, StructureStubInfo* stubInfo, ArrayProfile* profile))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue baseValue = JSValue::decode(encodedBase);
JSValue key = JSValue::decode(encodedKey);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return { };
}
JSObject* baseObject = asObject(baseValue);
uint32_t i;
if (key.getUInt32(i)) {
if (profile)
profile->observeIndexedRead(baseObject, i);
CodeBlock* codeBlock = callFrame->codeBlock();
Structure* structure = baseValue.asCell()->structure();
if (stubInfo->considerRepatchingCacheGeneric(vm, codeBlock, structure)) {
if (profile)
profile->computeUpdatedPrediction(codeBlock, structure);
repatchArrayInByVal(globalObject, codeBlock, baseValue, key, *stubInfo, InByKind::ByVal);
}
RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(baseObject->hasProperty(globalObject, i))));
}
const Identifier propertyName = key.toPropertyKey(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
PropertySlot slot(baseObject, PropertySlot::InternalMethodType::HasProperty);
bool found = baseObject->getPropertySlot(globalObject, propertyName, slot);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (CacheableIdentifier::isCacheableIdentifierCell(key) && (key.isSymbol() || !parseIndex(propertyName))) {
CodeBlock* codeBlock = callFrame->codeBlock();
CacheableIdentifier identifier = CacheableIdentifier::createFromCell(key.asCell());
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseObject->structure(), identifier))
repatchInBy(globalObject, codeBlock, baseObject, identifier, found, slot, *stubInfo, InByKind::ByVal);
}
return JSValue::encode(jsBoolean(found));
}
JSC_DEFINE_JIT_OPERATION(operationInByValGaveUp, EncodedJSValue, (EncodedJSValue base, EncodedJSValue key, JSGlobalObject* globalObject, StructureStubInfo* stubInfo, ArrayProfile* arrayProfile))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
stubInfo->tookSlowPath = true;
return JSValue::encode(jsBoolean(CommonSlowPaths::opInByVal(globalObject, JSValue::decode(base), JSValue::decode(key), arrayProfile)));
}
JSC_DEFINE_JIT_OPERATION(operationHasPrivateNameOptimize, EncodedJSValue, (EncodedJSValue encodedBase, EncodedJSValue encodedProperty, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue baseValue = JSValue::decode(encodedBase);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return encodedJSValue();
}
JSObject* baseObject = asObject(baseValue);
JSValue propertyValue = JSValue::decode(encodedProperty);
ASSERT(propertyValue.isSymbol());
auto property = propertyValue.toPropertyKey(globalObject);
RETURN_IF_EXCEPTION(scope, { });
PropertySlot slot(baseObject, PropertySlot::InternalMethodType::HasProperty);
bool found = JSObject::getPrivateFieldSlot(baseObject, globalObject, property, slot);
ASSERT(CacheableIdentifier::isCacheableIdentifierCell(propertyValue));
CodeBlock* codeBlock = callFrame->codeBlock();
CacheableIdentifier identifier = CacheableIdentifier::createFromCell(propertyValue.asCell());
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseObject->structure(), identifier))
repatchInBy(globalObject, codeBlock, baseObject, identifier, found, slot, *stubInfo, InByKind::PrivateName);
return JSValue::encode(jsBoolean(found));
}
JSC_DEFINE_JIT_OPERATION(operationHasPrivateNameGaveUp, EncodedJSValue, (EncodedJSValue encodedBase, EncodedJSValue encodedProperty, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
stubInfo->tookSlowPath = true;
JSValue baseValue = JSValue::decode(encodedBase);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return encodedJSValue();
}
JSValue propertyValue = JSValue::decode(encodedProperty);
ASSERT(propertyValue.isSymbol());
auto property = propertyValue.toPropertyKey(globalObject);
RETURN_IF_EXCEPTION(scope, { });
return JSValue::encode(jsBoolean(asObject(baseValue)->hasPrivateField(globalObject, property)));
}
JSC_DEFINE_JIT_OPERATION(operationHasPrivateBrandOptimize, EncodedJSValue, (EncodedJSValue encodedBase, EncodedJSValue encodedBrand, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue baseValue = JSValue::decode(encodedBase);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return encodedJSValue();
}
JSObject* baseObject = asObject(baseValue);
JSValue brand = JSValue::decode(encodedBrand);
bool found = asObject(baseValue)->hasPrivateBrand(globalObject, brand);
ASSERT(CacheableIdentifier::isCacheableIdentifierCell(brand));
CodeBlock* codeBlock = callFrame->codeBlock();
CacheableIdentifier identifier = CacheableIdentifier::createFromCell(brand.asCell());
if (stubInfo->considerRepatchingCacheBy(vm, codeBlock, baseObject->structure(), identifier))
repatchHasPrivateBrand(globalObject, codeBlock, baseObject, identifier, found, *stubInfo);
return JSValue::encode(jsBoolean(found));
}
JSC_DEFINE_JIT_OPERATION(operationHasPrivateBrandGaveUp, EncodedJSValue, (EncodedJSValue encodedBase, EncodedJSValue encodedBrand, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
auto scope = DECLARE_THROW_SCOPE(vm);
stubInfo->tookSlowPath = true;
JSValue baseValue = JSValue::decode(encodedBase);
if (!baseValue.isObject()) {
throwException(globalObject, scope, createInvalidInParameterError(globalObject, baseValue));
return encodedJSValue();
}
return JSValue::encode(jsBoolean(asObject(baseValue)->hasPrivateBrand(globalObject, JSValue::decode(encodedBrand))));
}
JSC_DEFINE_JIT_OPERATION(operationPutByIdStrictGaveUp, void, (EncodedJSValue encodedValue, EncodedJSValue encodedBase, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
stubInfo->tookSlowPath = true;
JSValue baseValue = JSValue::decode(encodedBase);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
PutPropertySlot slot(baseValue, true, callFrame->codeBlock()->putByIdContext());
baseValue.putInline(globalObject, ident, JSValue::decode(encodedValue), slot);
LOG_IC((ICEvent::OperationPutByIdStrict, baseValue.classInfoOrNull(), ident, slot.base() == baseValue));
}
JSC_DEFINE_JIT_OPERATION(operationPutByIdSloppyGaveUp, void, (EncodedJSValue encodedValue, EncodedJSValue encodedBase, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
stubInfo->tookSlowPath = true;
JSValue baseValue = JSValue::decode(encodedBase);
CacheableIdentifier identifier = stubInfo->identifier();
Identifier ident = Identifier::fromUid(vm, identifier.uid());
PutPropertySlot slot(baseValue, false, callFrame->codeBlock()->putByIdContext());
baseValue.putInline(globalObject, ident, JSValue::decode(encodedValue), slot);
LOG_IC((ICEvent::OperationPutByIdSloppy, baseValue.classInfoOrNull(), ident, slot.base() == baseValue));
}
ALWAYS_INLINE static void putByIdMegamorphic(JSGlobalObject* globalObject, VM& vm, CallFrame* callFrame, StructureStubInfo* stubInfo, JSValue baseValue, JSValue value, CacheableIdentifier identifier, PutByKind kind)
{
auto scope = DECLARE_THROW_SCOPE(vm);
auto* uid = identifier.uid();
bool isStrict = kind == PutByKind::ByIdStrict;
PutPropertySlot slot(baseValue, isStrict, callFrame->codeBlock()->putByIdContext());
if (UNLIKELY(!baseValue.isObject())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchPutBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
scope.release();
baseValue.put(globalObject, uid, value, slot);
return;
}
JSObject* baseObject = asObject(baseValue);
Structure* structure = baseObject->structure();
if (UNLIKELY(structure->typeInfo().overridesPut())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchPutBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
scope.release();
baseValue.put(globalObject, uid, value, slot);
return;
}
{
JSObject* object = baseObject;
while (true) {
if (UNLIKELY(structure->hasReadOnlyOrGetterSetterPropertiesExcludingProto() || structure->typeInfo().overridesGetPrototype() || structure->typeInfo().overridesPut() || structure->hasPolyProto())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchPutBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
scope.release();
baseObject->putInlineSlow(globalObject, uid, value, slot);
return;
}
JSValue prototype = object->getPrototypeDirect();
if (prototype.isNull())
break;
object = asObject(prototype);
structure = object->structure();
}
}
Structure* oldStructure = baseObject->structure();
baseObject->putInlineFast(globalObject, uid, value, slot);
RETURN_IF_EXCEPTION(scope, void());
if (UNLIKELY(!slot.isCacheablePut() || !oldStructure->propertyAccessesAreCacheable())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchPutBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
return;
}
Structure* newStructure = baseObject->structure();
if (slot.type() == PutPropertySlot::ExistingProperty) {
if (LIKELY(oldStructure == newStructure && slot.cachedOffset() <= MegamorphicCache::maxOffset)) {
oldStructure->didCachePropertyReplacement(vm, slot.cachedOffset()); // Ensure invalidating watchpoint set.
vm.megamorphicCache()->initAsReplace(StructureID::encode(oldStructure), uid, slot.cachedOffset());
}
return;
}
ASSERT(slot.type() == PutPropertySlot::NewProperty);
// This is not worth registering. Dictionary Structure is one-on-one to this object. And NewProperty happens only once.
// So this cache will be never used again.
if (oldStructure->isDictionary() || newStructure->isDictionary())
return;
if (UNLIKELY(oldStructure->mayBePrototype() || (newStructure->previousID() != oldStructure) || !newStructure->propertyAccessesAreCacheable())) {
if (stubInfo && stubInfo->considerRepatchingCacheMegamorphic(vm))
repatchPutBySlowPathCall(callFrame->codeBlock(), *stubInfo, kind);
return;
}
if (newStructure->outOfLineCapacity() == oldStructure->outOfLineCapacity()) {
if (LIKELY(slot.cachedOffset() <= MegamorphicCache::maxOffset))
vm.megamorphicCache()->initAsTransition(StructureID::encode(oldStructure), StructureID::encode(newStructure), uid, slot.cachedOffset());
}
}
JSC_DEFINE_JIT_OPERATION(operationPutByIdStrictMegamorphic, void, (EncodedJSValue encodedValue, EncodedJSValue encodedBase, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);
JSValue baseValue = JSValue::decode(encodedBase);
JSValue value = JSValue::decode(encodedValue);
CacheableIdentifier identifier = stubInfo->identifier();
putByIdMegamorphic(globalObject, vm, callFrame, stubInfo, baseValue, value, identifier, PutByKind::ByIdStrict);
}
JSC_DEFINE_JIT_OPERATION(operationPutByIdStrictMegamorphicGeneric, void, (JSGlobalObject* globalObject, EncodedJSValue encodedValue, EncodedJSValue encodedBase, uintptr_t rawCacheableIdentifier))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
JSValue baseValue = JSValue::decode(encodedBase);
JSValue value = JSValue::decode(encodedValue);
CacheableIdentifier identifier = CacheableIdentifier::createFromRawBits(rawCacheableIdentifier);
putByIdMegamorphic(globalObject, vm, callFrame, nullptr, baseValue, value, identifier, PutByKind::ByIdStrict);
}
JSC_DEFINE_JIT_OPERATION(operationPutByIdSloppyMegamorphic, void, (EncodedJSValue encodedValue, EncodedJSValue encodedBase, JSGlobalObject* globalObject, StructureStubInfo* stubInfo))
{
SuperSamplerScope superSamplerScope(false);
VM& vm = globalObject->vm();
CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
ICSlowPathCallFrameTracer tracer(vm, callFrame, stubInfo);