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/*
* Copyright (C) 2017-2021 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(ASSEMBLER)
#include "CallFrame.h"
#include "ProbeStack.h"
namespace JSC {
namespace Probe {
class Frame {
public:
Frame(void* frameBase, Stack& stack)
: m_frameBase { static_cast<uint8_t*>(frameBase) }
, m_stack { stack }
{ }
template<typename T = JSValue>
T argument(int argument)
{
return get<T>(CallFrame::argumentOffset(argument) * sizeof(Register));
}
template<typename T = JSValue>
T operand(VirtualRegister operand)
{
return get<T>(operand.offset() * sizeof(Register));
}
template<typename T = JSValue>
T operand(VirtualRegister operand, ptrdiff_t offset)
{
return get<T>(operand.offset() * sizeof(Register) + offset);
}
template<typename T>
void setArgument(int argument, T value)
{
return set<T>(CallFrame::argumentOffset(argument) * sizeof(Register), value);
}
template<typename T>
void setOperand(VirtualRegister operand, T value)
{
set<T>(operand.offset() * sizeof(Register), value);
}
template<typename T>
void setOperand(VirtualRegister operand, ptrdiff_t offset, T value)
{
set<T>(operand.offset() * sizeof(Register) + offset, value);
}
template<typename T = JSValue>
T get(ptrdiff_t offset)
{
return m_stack.get<T>(m_frameBase + offset);
}
template<typename T>
void set(ptrdiff_t offset, T value)
{
m_stack.set<T>(m_frameBase + offset, value);
}
private:
uint8_t* m_frameBase;
Stack& m_stack;
};
} // namespace Probe
} // namespace JSC
#endif // ENABLE(ASSEMBLER)
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