78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
|
|
* Copyright (C) 2013-2015 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 "Reg.h"
|
|
#include <wtf/PrintStream.h>
|
|
|
|
namespace JSC {
|
|
|
|
class RegisterAtOffset {
|
|
public:
|
|
RegisterAtOffset()
|
|
: m_offset(0)
|
|
{
|
|
}
|
|
|
|
RegisterAtOffset(Reg reg, ptrdiff_t offset)
|
|
: m_reg(reg)
|
|
, m_offset(offset)
|
|
{
|
|
}
|
|
|
|
bool operator!() const { return !m_reg; }
|
|
|
|
Reg reg() const { return m_reg; }
|
|
ptrdiff_t offset() const { return m_offset; }
|
|
int offsetAsIndex() const { ASSERT(!(offset() % sizeof(CPURegister))); return offset() / static_cast<int>(sizeof(CPURegister)); }
|
|
|
|
bool operator==(const RegisterAtOffset& other) const
|
|
{
|
|
return reg() == other.reg() && offset() == other.offset();
|
|
}
|
|
|
|
bool operator<(const RegisterAtOffset& other) const
|
|
{
|
|
if (reg() != other.reg())
|
|
return reg() < other.reg();
|
|
return offset() < other.offset();
|
|
}
|
|
|
|
static Reg getReg(RegisterAtOffset* value) { return value->reg(); }
|
|
|
|
void dump(PrintStream& out) const;
|
|
|
|
private:
|
|
Reg m_reg;
|
|
ptrdiff_t m_offset : (sizeof(ptrdiff_t) - sizeof(Reg)) * CHAR_BIT;
|
|
};
|
|
|
|
} // namespace JSC
|
|
|
|
#endif // ENABLE(ASSEMBLER)
|