mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/*
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* Copyright (C) 2018 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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#pragma once
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namespace JSC {
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enum OpcodeSize {
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Narrow = 1,
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Wide16 = 2,
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Wide32 = 4,
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};
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template<OpcodeSize>
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struct TypeBySize;
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template<>
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struct TypeBySize<OpcodeSize::Narrow> {
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using signedType = int8_t;
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using unsignedType = uint8_t;
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};
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template<>
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struct TypeBySize<OpcodeSize::Wide16> {
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using signedType = int16_t;
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using unsignedType = uint16_t;
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};
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template<>
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struct TypeBySize<OpcodeSize::Wide32> {
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using signedType = int32_t;
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using unsignedType = uint32_t;
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};
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template<OpcodeSize>
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struct PaddingBySize;
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template<>
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struct PaddingBySize<OpcodeSize::Narrow> {
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static constexpr uint8_t value = 0;
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};
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template<>
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struct PaddingBySize<OpcodeSize::Wide16> {
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static constexpr uint8_t value = 1;
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};
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template<>
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struct PaddingBySize<OpcodeSize::Wide32> {
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static constexpr uint8_t value = 1;
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};
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} // namespace JSC
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