87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
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* Copyright (C) 2015-2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "RegisterAtOffsetList.h"
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#if ENABLE(ASSEMBLER)
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#include <wtf/ListDump.h>
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namespace JSC {
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DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(RegisterAtOffsetList);
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RegisterAtOffsetList::RegisterAtOffsetList() { }
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RegisterAtOffsetList::RegisterAtOffsetList(RegisterSet registerSet, OffsetBaseType offsetBaseType)
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: m_registers(registerSet.numberOfSetRegisters())
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{
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size_t numberOfRegisters = registerSet.numberOfSetRegisters();
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ptrdiff_t offset = 0;
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if (offsetBaseType == FramePointerBased)
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offset = -(static_cast<ptrdiff_t>(numberOfRegisters) * sizeof(CPURegister));
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unsigned index = 0;
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registerSet.forEach([&] (Reg reg) {
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m_registers[index] = RegisterAtOffset(reg, offset);
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offset += sizeof(CPURegister);
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++index;
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});
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}
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void RegisterAtOffsetList::dump(PrintStream& out) const
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{
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out.print(listDump(m_registers));
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}
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RegisterAtOffset* RegisterAtOffsetList::find(Reg reg) const
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{
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return tryBinarySearch<RegisterAtOffset, Reg>(m_registers, m_registers.size(), reg, RegisterAtOffset::getReg);
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}
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unsigned RegisterAtOffsetList::indexOf(Reg reg) const
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{
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if (RegisterAtOffset* pointer = find(reg))
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return pointer - m_registers.begin();
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return UINT_MAX;
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}
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const RegisterAtOffsetList& RegisterAtOffsetList::llintBaselineCalleeSaveRegisters()
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{
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static std::once_flag onceKey;
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static LazyNeverDestroyed<RegisterAtOffsetList> result;
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std::call_once(onceKey, [] {
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result.construct(RegisterSet::llintBaselineCalleeSaveRegisters());
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});
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return result.get();
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}
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} // namespace JSC
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#endif // ENABLE(ASSEMBLER)
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