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/*
* Copyright 2017 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "opcode.h"
#include <algorithm>
namespace wabt {
// static
Opcode::Info Opcode::infos_[] = {
#define WABT_OPCODE(rtype, type1, type2, mem_size, code, Name, text) \
{text, Type::rtype, Type::type1, Type::type2, mem_size, code},
#include "opcode.def"
#undef WABT_OPCODE
};
#define WABT_OPCODE(rtype, type1, type2, mem_size, code, Name, text) \
/* static */ Opcode Opcode::Name##_Opcode(Opcode::Name);
#include "opcode.def"
#undef WABT_OPCODE
// static
Opcode::Info Opcode::invalid_info_ = {
"<invalid>", Type::Void, Type::Void, Type::Void, 0, 0,
};
// static
Opcode Opcode::FromCode(uint32_t code) {
auto iter = std::lower_bound(
infos_, infos_ + WABT_ARRAY_SIZE(infos_), code,
[](const Info& info, uint32_t code) { return info.code < code; });
if (iter->code != code)
return Opcode(Invalid);
return Opcode(static_cast<Enum>(iter - infos_));
}
Opcode::Info Opcode::GetInfo() const {
return enum_ < Invalid ? infos_[enum_] : invalid_info_;
}
bool Opcode::IsNaturallyAligned(Address alignment) const {
Address opcode_align = GetMemorySize();
return alignment == WABT_USE_NATURAL_ALIGNMENT || alignment == opcode_align;
}
Address Opcode::GetAlignment(Address alignment) const {
if (alignment == WABT_USE_NATURAL_ALIGNMENT)
return GetMemorySize();
return alignment;
}
} // namespace
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