darling-JavaScriptCore/interpreter/CLoopStackInlines.h
2020-08-29 15:28:47 -04:00

63 lines
2.3 KiB
C++

/*
* Copyright (C) 2012-2017 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.
*/
#pragma once
#if ENABLE(C_LOOP)
#include "CLoopStack.h"
#include "CallFrame.h"
#include "CodeBlock.h"
#include "VM.h"
namespace JSC {
inline bool CLoopStack::ensureCapacityFor(Register* newTopOfStack)
{
if (newTopOfStack >= m_end)
return true;
return grow(newTopOfStack);
}
inline void* CLoopStack::currentStackPointer()
{
// One might be tempted to assert that m_currentStackPointer <= m_topCallFrame->topOfFrame()
// here. That assertion would be incorrect because this function may be called from function
// prologues (e.g. during a stack check) where m_currentStackPointer may be higher than
// m_topCallFrame->topOfFrame() because the stack pointer has not been initialized to point
// to frame top yet.
return m_currentStackPointer;
}
inline void CLoopStack::setCLoopStackLimit(Register* newTopOfStack)
{
m_end = newTopOfStack;
m_vm.setCLoopStackLimit(newTopOfStack);
}
} // namespace JSC
#endif // ENABLE(C_LOOP)