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https://gitee.com/openharmony/arkcompiler_ets_runtime
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02853bca68
1 Implements x64 assembler 2 Add Asm code generator framework 3 Generating AsmInterCallRuntime with the x64 assembler issue: #I52Ak6 Signed-off-by: sunzhe23 <sunzhe23@huawei.com>
154 lines
3.9 KiB
C++
154 lines
3.9 KiB
C++
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMASCRIPT_REGEXP_DYN_BUFFER_H
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#define ECMASCRIPT_REGEXP_DYN_BUFFER_H
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#include <cstring>
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#include "ecmascript/common.h"
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#include "ecmascript/mem/chunk.h"
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namespace panda::ecmascript {
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class PUBLIC_API DynChunk {
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public:
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static constexpr size_t ALLOCATE_MIN_SIZE = 64;
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static constexpr int FAILURE = -1;
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static constexpr int SUCCESS = 0;
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explicit DynChunk(Chunk *chunk) : chunk_(chunk)
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{
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ASSERT(chunk_ != nullptr);
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};
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~DynChunk() = default;
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NO_COPY_SEMANTIC(DynChunk);
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NO_MOVE_SEMANTIC(DynChunk);
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int Expand(size_t newSize);
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int Insert(uint32_t position, size_t len);
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int Emit(const uint8_t *data, size_t len);
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int EmitSelf(size_t offset, size_t len);
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int EmitChar(uint8_t c);
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int EmitStr(const char *str);
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inline int EmitU16(uint16_t data)
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{
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return Emit(reinterpret_cast<uint8_t *>(&data), U16_SIZE);
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}
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inline int EmitU32(uint32_t data)
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{
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return Emit(reinterpret_cast<uint8_t *>(&data), U32_SIZE);
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}
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inline int EmitU64(uint64_t data)
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{
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return Emit(reinterpret_cast<uint8_t *>(&data), U64_SIZE);
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}
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inline void SetError()
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{
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error_ = true;
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}
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inline size_t GetSize() const
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{
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return size_;
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}
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inline size_t GetAllocatedSize() const
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{
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return allocatedSize_;
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}
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inline bool GetError() const
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{
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return error_;
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}
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inline uint32_t GetU32(size_t offset) const
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{
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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return *reinterpret_cast<uint32_t *>(buf_ + offset);
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}
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inline void PutU32(size_t offset, uint32_t data) const
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{
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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*reinterpret_cast<uint32_t *>(buf_ + offset) = data;
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}
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inline uint32_t GetU16(size_t offset) const
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{
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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return *reinterpret_cast<uint16_t *>(buf_ + offset);
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}
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inline void PutU16(size_t offset, uint16_t data) const
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{
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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*reinterpret_cast<uint16_t *>(buf_ + offset) = data;
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}
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inline uint32_t GetU8(size_t offset) const
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{
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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return *(buf_ + offset);
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}
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inline void PutU8(size_t offset, uint8_t data) const
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{
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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*(buf_ + offset) = data;
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}
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ALWAYS_INLINE static inline constexpr uint32_t GetBufferOffset()
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{
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return MEMBER_OFFSET(DynChunk, buf_);
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}
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uint8_t *GetBegin() const
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{
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return buf_;
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}
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private:
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static constexpr size_t ALLOCATE_MULTIPLIER = 2;
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static constexpr size_t U16_SIZE = 2;
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static constexpr size_t U32_SIZE = 4;
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static constexpr size_t U64_SIZE = 8;
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friend class RegExpParser;
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friend class RegExpOpCode;
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friend class RegExpExecutor;
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DynChunk(uint8_t *buf, Chunk *chunk) : buf_(buf), chunk_(chunk)
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{
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ASSERT(chunk_ != nullptr);
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};
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uint8_t *buf_ {nullptr};
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size_t size_ {0};
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size_t allocatedSize_ {0};
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bool error_ {false};
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Chunk *chunk_ {nullptr};
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};
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} // namespace panda::ecmascript
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#endif // ECMASCRIPT_REGEXP_DYN_BUFFER_H
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