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/*
* Copyright (C) 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(B3_JIT)
#include "B3MemoryValue.h"
#include "B3Width.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC { namespace B3 {
class JS_EXPORT_PRIVATE AtomicValue final : public MemoryValue {
public:
static bool accepts(Kind kind)
{
return isAtom(kind.opcode());
}
~AtomicValue() final;
Type accessType() const { return child(0)->type(); }
Width accessWidth() const { return m_width; }
B3_SPECIALIZE_VALUE_FOR_FINAL_SIZE_FIXED_CHILDREN
private:
void dumpMeta(CommaPrinter&, PrintStream&) const final;
friend class Procedure;
friend class Value;
enum AtomicValueRMW { AtomicValueRMWTag };
enum AtomicValueCAS { AtomicValueCASTag };
AtomicValue(Kind kind, Origin origin, Width width, Value* operand, Value* pointer)
: AtomicValue(kind, origin, width, operand, pointer, 0)
{
}
template<typename Int,
typename = typename std::enable_if<std::is_integral<Int>::value>::type,
typename = typename std::enable_if<std::is_signed<Int>::value>::type,
typename = typename std::enable_if<sizeof(Int) <= sizeof(OffsetType)>::type
>
AtomicValue(Kind kind, Origin origin, Width width, Value* operand, Value* pointer, Int offset, HeapRange range = HeapRange::top(), HeapRange fenceRange = HeapRange::top())
: AtomicValue(AtomicValueRMWTag, kind, origin, width, operand, pointer, offset, range, fenceRange)
{
}
AtomicValue(Kind kind, Origin origin, Width width, Value* expectedValue, Value* newValue, Value* pointer)
: AtomicValue(kind, origin, width, expectedValue, newValue, pointer, 0)
{
}
template<typename Int,
typename = typename std::enable_if<std::is_integral<Int>::value>::type,
typename = typename std::enable_if<std::is_signed<Int>::value>::type,
typename = typename std::enable_if<sizeof(Int) <= sizeof(OffsetType)>::type
>
AtomicValue(Kind kind, Origin origin, Width width, Value* expectedValue, Value* newValue, Value* pointer, Int offset, HeapRange range = HeapRange::top(), HeapRange fenceRange = HeapRange::top())
: AtomicValue(AtomicValueCASTag, kind, origin, width, expectedValue, newValue, pointer, offset, range, fenceRange)
{
}
// The above templates forward to these implementations.
AtomicValue(AtomicValueRMW, Kind, Origin, Width, Value* operand, Value* pointer, OffsetType, HeapRange = HeapRange::top(), HeapRange fenceRange = HeapRange::top());
AtomicValue(AtomicValueCAS, Kind, Origin, Width, Value* expectedValue, Value* newValue, Value* pointer, OffsetType, HeapRange = HeapRange::top(), HeapRange fenceRange = HeapRange::top());
Width m_width;
};
} } // namespace JSC::B3
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ENABLE(B3_JIT)
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