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/*
* Copyright (C) 2015-2017 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 "B3Value.h"
#include "CCallHelpers.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC { namespace B3 {
class WasmBoundsCheckValue final : public Value {
public:
static bool accepts(Kind kind) { return kind == WasmBoundsCheck; }
~WasmBoundsCheckValue() final;
enum class Type {
Pinned,
Maximum,
};
union Bounds {
GPRReg pinnedSize;
size_t maximum;
};
unsigned offset() const { return m_offset; }
Type boundsType() const { return m_boundsType; }
Bounds bounds() const { return m_bounds; }
B3_SPECIALIZE_VALUE_FOR_FIXED_CHILDREN(1)
B3_SPECIALIZE_VALUE_FOR_FINAL_SIZE_FIXED_CHILDREN
private:
void dumpMeta(CommaPrinter&, PrintStream&) const final;
friend class Procedure;
friend class Value;
static Opcode opcodeFromConstructor(Origin, GPRReg, Value*, unsigned) { return WasmBoundsCheck; }
JS_EXPORT_PRIVATE WasmBoundsCheckValue(Origin, GPRReg pinnedGPR, Value* ptr, unsigned offset);
static Opcode opcodeFromConstructor(Origin, Value*, unsigned, size_t) { return WasmBoundsCheck; }
JS_EXPORT_PRIVATE WasmBoundsCheckValue(Origin, Value* ptr, unsigned offset, size_t maximum);
unsigned m_offset;
Type m_boundsType;
Bounds m_bounds;
};
} } // namespace JSC::B3
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ENABLE(B3_JIT)
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