WebKit/Source/JavaScriptCore/interpreter/CachedCall.cpp at main · WebKit/WebKit · GitHub

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* 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

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* 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,

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#include "config.h"

#include "CachedCall.h"

#include "ExceptionHelpers.h"

#include "Interpreter.h"

#include "JSFunction.h"

#include "ThrowScope.h"

#include "VMEntryScope.h"

#include <wtf/Scope.h>

namespace JSC {

CachedCall::CachedCall(JSGlobalObject* globalObject, JSFunction* function, int argumentCount)

: CallLinkInfoBase(CallSiteType::CachedCall)

, m_vm(globalObject->vm())

, m_entryScope(m_vm, function->scope()->realm())

, m_functionExecutable(function->jsExecutable())

, m_scope(function->scope())

{

VM& vm = m_vm;

auto scope = DECLARE_THROW_SCOPE(vm);

#if ASSERT_ENABLED

auto updateValidStatus = makeScopeExit([&] {

m_valid = !scope.exception();

});

#endif

ASSERT(!function->isHostFunctionNonInline());

if (!vm.isSafeToRecurseSoft()) [[unlikely]] {

throwStackOverflowError(globalObject, scope);

return;

}

if (vm.disallowVMEntryCount) [[unlikely]] {

VM::checkVMEntryPermission();

throwStackOverflowError(globalObject, scope);

return;

}

m_arguments.ensureCapacity(argumentCount);

if (m_arguments.hasOverflowed()) [[unlikely]] {

throwOutOfMemoryError(globalObject, scope);

return;

}

auto* newCodeBlock = m_vm.interpreter.prepareForCachedCall(*this, function);

if (scope.exception()) [[unlikely]]

return;

m_numParameters = newCodeBlock->numParameters();

m_protoCallFrame.init(newCodeBlock, function->realm(), function, jsUndefined(), nullptr, argumentCount + 1, const_cast<EncodedJSValue*>(m_arguments.data()));

}

void CachedCall::relink()

{

VM& vm = m_vm;

auto scope = DECLARE_THROW_SCOPE(vm);

auto* codeBlock = m_vm.interpreter.prepareForCachedCall(*this, this->function());

RETURN_IF_EXCEPTION(scope, void());

m_protoCallFrame.setCodeBlock(codeBlock);

}

} // namespace JSC

WebKit/Source/JavaScriptCore/interpreter/CachedCall.cpp at main · WebKit/WebKit · GitHub

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