PassRefPtr<CodeBlock> ScriptExecutable::newReplacementCodeBlockFor(
CodeSpecializationKind kind)
{
if (classInfo() == EvalExecutable::info()) {
RELEASE_ASSERT(kind == CodeForCall);
EvalExecutable* executable = jsCast<EvalExecutable*>(this);
EvalCodeBlock* baseline = static_cast<EvalCodeBlock*>(
executable->m_evalCodeBlock->baselineVersion());
RefPtr<EvalCodeBlock> result = adoptRef(new EvalCodeBlock(
CodeBlock::CopyParsedBlock, *baseline));
result->setAlternative(baseline);
return result;
}
if (classInfo() == ProgramExecutable::info()) {
RELEASE_ASSERT(kind == CodeForCall);
ProgramExecutable* executable = jsCast<ProgramExecutable*>(this);
ProgramCodeBlock* baseline = static_cast<ProgramCodeBlock*>(
executable->m_programCodeBlock->baselineVersion());
RefPtr<ProgramCodeBlock> result = adoptRef(new ProgramCodeBlock(
CodeBlock::CopyParsedBlock, *baseline));
result->setAlternative(baseline);
return result;
}
RELEASE_ASSERT(classInfo() == FunctionExecutable::info());
FunctionExecutable* executable = jsCast<FunctionExecutable*>(this);
FunctionCodeBlock* baseline = static_cast<FunctionCodeBlock*>(
executable->codeBlockFor(kind)->baselineVersion());
RefPtr<FunctionCodeBlock> result = adoptRef(new FunctionCodeBlock(
CodeBlock::CopyParsedBlock, *baseline));
result->setAlternative(baseline);
return result;
}
RefPtr<CodeBlock> ScriptExecutable::newCodeBlockFor(
CodeSpecializationKind kind, JSFunction* function, JSScope* scope, JSObject*& exception)
{
VM* vm = scope->vm();
ASSERT(vm->heap.isDeferred());
ASSERT(startColumn() != UINT_MAX);
ASSERT(endColumn() != UINT_MAX);
if (classInfo() == EvalExecutable::info()) {
EvalExecutable* executable = jsCast<EvalExecutable*>(this);
RELEASE_ASSERT(kind == CodeForCall);
RELEASE_ASSERT(!executable->m_evalCodeBlock);
RELEASE_ASSERT(!function);
return adoptRef(new EvalCodeBlock(
executable, executable->m_unlinkedEvalCodeBlock.get(), scope,
executable->source().provider()));
}
if (classInfo() == ProgramExecutable::info()) {
ProgramExecutable* executable = jsCast<ProgramExecutable*>(this);
RELEASE_ASSERT(kind == CodeForCall);
RELEASE_ASSERT(!executable->m_programCodeBlock);
RELEASE_ASSERT(!function);
return adoptRef(new ProgramCodeBlock(
executable, executable->m_unlinkedProgramCodeBlock.get(), scope,
executable->source().provider(), executable->source().startColumn()));
}
RELEASE_ASSERT(classInfo() == FunctionExecutable::info());
RELEASE_ASSERT(function);
FunctionExecutable* executable = jsCast<FunctionExecutable*>(this);
RELEASE_ASSERT(!executable->codeBlockFor(kind));
JSGlobalObject* globalObject = scope->globalObject();
ParserError error;
DebuggerMode debuggerMode = globalObject->hasDebugger() ? DebuggerOn : DebuggerOff;
ProfilerMode profilerMode = globalObject->hasProfiler() ? ProfilerOn : ProfilerOff;
UnlinkedFunctionCodeBlock* unlinkedCodeBlock =
executable->m_unlinkedExecutable->codeBlockFor(*vm, executable->m_source, kind, debuggerMode, profilerMode, error, executable->isArrowFunction());
recordParse(executable->m_unlinkedExecutable->features(), executable->m_unlinkedExecutable->hasCapturedVariables(), firstLine(), lastLine(), startColumn(), endColumn());
if (!unlinkedCodeBlock) {
exception = vm->throwException(
globalObject->globalExec(),
error.toErrorObject(globalObject, executable->m_source));
return nullptr;
}
SourceProvider* provider = executable->source().provider();
unsigned sourceOffset = executable->source().startOffset();
unsigned startColumn = executable->source().startColumn();
return adoptRef(new FunctionCodeBlock(
executable, unlinkedCodeBlock, scope, provider, sourceOffset, startColumn));
}
CodeBlock* ScriptExecutable::newReplacementCodeBlockFor(
CodeSpecializationKind kind)
{
if (classInfo() == EvalExecutable::info()) {
RELEASE_ASSERT(kind == CodeForCall);
EvalExecutable* executable = jsCast<EvalExecutable*>(this);
EvalCodeBlock* baseline = static_cast<EvalCodeBlock*>(
executable->m_evalCodeBlock->baselineVersion());
EvalCodeBlock* result = EvalCodeBlock::create(vm(),
CodeBlock::CopyParsedBlock, *baseline);
result->setAlternative(*vm(), baseline);
return result;
}
if (classInfo() == ProgramExecutable::info()) {
RELEASE_ASSERT(kind == CodeForCall);
ProgramExecutable* executable = jsCast<ProgramExecutable*>(this);
ProgramCodeBlock* baseline = static_cast<ProgramCodeBlock*>(
executable->m_programCodeBlock->baselineVersion());
ProgramCodeBlock* result = ProgramCodeBlock::create(vm(),
CodeBlock::CopyParsedBlock, *baseline);
result->setAlternative(*vm(), baseline);
return result;
}
if (classInfo() == ModuleProgramExecutable::info()) {
RELEASE_ASSERT(kind == CodeForCall);
ModuleProgramExecutable* executable = jsCast<ModuleProgramExecutable*>(this);
ModuleProgramCodeBlock* baseline = static_cast<ModuleProgramCodeBlock*>(
executable->m_moduleProgramCodeBlock->baselineVersion());
ModuleProgramCodeBlock* result = ModuleProgramCodeBlock::create(vm(),
CodeBlock::CopyParsedBlock, *baseline);
result->setAlternative(*vm(), baseline);
return result;
}
RELEASE_ASSERT(classInfo() == FunctionExecutable::info());
FunctionExecutable* executable = jsCast<FunctionExecutable*>(this);
FunctionCodeBlock* baseline = static_cast<FunctionCodeBlock*>(
executable->codeBlockFor(kind)->baselineVersion());
FunctionCodeBlock* result = FunctionCodeBlock::create(vm(),
CodeBlock::CopyParsedBlock, *baseline);
result->setAlternative(*vm(), baseline);
return result;
}
inline char* linkFor(ExecState* execCallee, CodeSpecializationKind kind)
{
ExecState* exec = execCallee->callerFrame();
VM* vm = &exec->vm();
NativeCallFrameTracer tracer(vm, exec);
JSValue calleeAsValue = execCallee->calleeAsValue();
JSCell* calleeAsFunctionCell = getJSFunction(calleeAsValue);
if (!calleeAsFunctionCell)
return reinterpret_cast<char*>(handleHostCall(execCallee, calleeAsValue, kind));
JSFunction* callee = jsCast<JSFunction*>(calleeAsFunctionCell);
execCallee->setScope(callee->scopeUnchecked());
ExecutableBase* executable = callee->executable();
MacroAssemblerCodePtr codePtr;
CodeBlock* codeBlock = 0;
if (executable->isHostFunction())
codePtr = executable->generatedJITCodeFor(kind)->addressForCall();
else {
FunctionExecutable* functionExecutable = static_cast<FunctionExecutable*>(executable);
JSObject* error = functionExecutable->prepareForExecution(execCallee, callee->scope(), kind);
if (error) {
vm->throwException(exec, createStackOverflowError(exec));
return reinterpret_cast<char*>(vm->getCTIStub(throwExceptionFromCallSlowPathGenerator).code().executableAddress());
}
codeBlock = functionExecutable->codeBlockFor(kind);
if (execCallee->argumentCountIncludingThis() < static_cast<size_t>(codeBlock->numParameters()))
codePtr = functionExecutable->generatedJITCodeWithArityCheckFor(kind);
else
codePtr = functionExecutable->generatedJITCodeFor(kind)->addressForCall();
}
CallLinkInfo& callLinkInfo = exec->codeBlock()->getCallLinkInfo(execCallee->returnPC());
if (!callLinkInfo.seenOnce())
callLinkInfo.setSeen();
else
linkFor(execCallee, callLinkInfo, codeBlock, callee, codePtr, kind);
return reinterpret_cast<char*>(codePtr.executableAddress());
}
PassRefPtr<CodeBlock> ScriptExecutable::newCodeBlockFor(
CodeSpecializationKind kind, JSFunction* function, JSScope** scope, JSObject*& exception)
{
VM* vm = (*scope)->vm();
ASSERT(vm->heap.isDeferred());
ASSERT(startColumn() != UINT_MAX);
ASSERT(endColumn() != UINT_MAX);
if (classInfo() == EvalExecutable::info()) {
EvalExecutable* executable = jsCast<EvalExecutable*>(this);
RELEASE_ASSERT(kind == CodeForCall);
RELEASE_ASSERT(!executable->m_evalCodeBlock);
RELEASE_ASSERT(!function);
return adoptRef(new EvalCodeBlock(
executable, executable->m_unlinkedEvalCodeBlock.get(), *scope,
executable->source().provider()));
}
if (classInfo() == ProgramExecutable::info()) {
ProgramExecutable* executable = jsCast<ProgramExecutable*>(this);
RELEASE_ASSERT(kind == CodeForCall);
RELEASE_ASSERT(!executable->m_programCodeBlock);
RELEASE_ASSERT(!function);
return adoptRef(new ProgramCodeBlock(
executable, executable->m_unlinkedProgramCodeBlock.get(), *scope,
executable->source().provider(), executable->source().startColumn()));
}
RELEASE_ASSERT(classInfo() == FunctionExecutable::info());
RELEASE_ASSERT(function);
FunctionExecutable* executable = jsCast<FunctionExecutable*>(this);
RELEASE_ASSERT(!executable->codeBlockFor(kind));
JSGlobalObject* globalObject = (*scope)->globalObject();
ParserError error;
DebuggerMode debuggerMode = globalObject->hasDebugger() ? DebuggerOn : DebuggerOff;
ProfilerMode profilerMode = globalObject->hasProfiler() ? ProfilerOn : ProfilerOff;
UnlinkedFunctionCodeBlock* unlinkedCodeBlock =
executable->m_unlinkedExecutable->codeBlockFor(
*vm, executable->m_source, kind, debuggerMode, profilerMode, error);
recordParse(executable->m_unlinkedExecutable->features(), executable->m_unlinkedExecutable->hasCapturedVariables(), lineNo(), lastLine(), startColumn(), endColumn());
if (!unlinkedCodeBlock) {
exception = vm->throwException(
globalObject->globalExec(),
error.toErrorObject(globalObject, executable->m_source));
return 0;
}
// Parsing reveals whether our function uses features that require a separate function name object in the scope chain.
// Be sure to add this scope before linking the bytecode because this scope will change the resolution depth of non-local variables.
if (!executable->m_didParseForTheFirstTime) {
executable->m_didParseForTheFirstTime = true;
function->addNameScopeIfNeeded(*vm);
*scope = function->scope();
}
SourceProvider* provider = executable->source().provider();
unsigned sourceOffset = executable->source().startOffset();
unsigned startColumn = executable->source().startColumn();
return adoptRef(new FunctionCodeBlock(
executable, unlinkedCodeBlock, *scope, provider, sourceOffset, startColumn));
}