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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/wasm2c/include/wabt/leb128.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/wasm2c/include/wabt/leb128.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/third_party/wasm2c/include/wabt/leb128.h b/third_party/wasm2c/include/wabt/leb128.h new file mode 100644 index 0000000000..e7290475b3 --- /dev/null +++ b/third_party/wasm2c/include/wabt/leb128.h @@ -0,0 +1,70 @@ +/* + * 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. + */ + +#ifndef WABT_LEB128_H_ +#define WABT_LEB128_H_ + +#include <cstdint> + +#include "wabt/common.h" + +namespace wabt { + +class Stream; + +// Returns the length of the leb128. +Offset U32Leb128Length(uint32_t value); + +void WriteU32Leb128(Stream* stream, uint32_t value, const char* desc); +void WriteS32Leb128(Stream* stream, uint32_t value, const char* desc); +void WriteU64Leb128(Stream* stream, uint64_t value, const char* desc); +void WriteS64Leb128(Stream* stream, uint64_t value, const char* desc); +void WriteFixedS32Leb128(Stream* stream, uint32_t value, const char* desc); +void WriteFixedU32Leb128(Stream* stream, uint32_t value, const char* desc); + +Offset WriteU32Leb128At(Stream* stream, + Offset offset, + uint32_t value, + const char* desc); + +Offset WriteFixedU32Leb128At(Stream* stream, + Offset offset, + uint32_t value, + const char* desc); + +Offset WriteU32Leb128Raw(uint8_t* data, uint8_t* end, uint32_t value); +Offset WriteFixedU32Leb128Raw(uint8_t* data, uint8_t* end, uint32_t value); + +// Convenience functions for writing enums as LEB128s. +template <typename T> +void WriteU32Leb128(Stream* stream, T value, const char* desc) { + WriteU32Leb128(stream, static_cast<uint32_t>(value), desc); +} + +template <typename T> +void WriteS32Leb128(Stream* stream, T value, const char* desc) { + WriteS32Leb128(stream, static_cast<uint32_t>(value), desc); +} + +// Returns the length of the leb128. +size_t ReadU32Leb128(const uint8_t* p, const uint8_t* end, uint32_t* out_value); +size_t ReadU64Leb128(const uint8_t* p, const uint8_t* end, uint64_t* out_value); +size_t ReadS32Leb128(const uint8_t* p, const uint8_t* end, uint32_t* out_value); +size_t ReadS64Leb128(const uint8_t* p, const uint8_t* end, uint64_t* out_value); + +} // namespace wabt + +#endif // WABT_LEB128_H_ |