| // Copyright 2023 The Dawn & Tint Authors |
| // |
| // 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. |
| // |
| // 3. Neither the name of the copyright holder nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef SRC_TINT_CMD_FUZZ_WGSL_FUZZ_H_ |
| #define SRC_TINT_CMD_FUZZ_WGSL_FUZZ_H_ |
| |
| #include <string> |
| #include <tuple> |
| #include <utility> |
| |
| #include "src/tint/lang/wgsl/program/program.h" |
| #include "src/tint/utils/bytes/decoder.h" |
| #include "src/tint/utils/containers/slice.h" |
| #include "src/tint/utils/macros/static_init.h" |
| #include "src/tint/utils/reflection/reflection.h" |
| |
| namespace tint::fuzz::wgsl { |
| |
| /// ProgramFuzzer describes a fuzzer function that takes a WGSL program as input |
| struct ProgramFuzzer { |
| /// @param name the name of the fuzzer |
| /// @param fn the fuzzer function |
| /// @returns a ProgramFuzzer that invokes the function @p fn with the Program, along with any |
| /// additional arguments which are deserialized from the fuzzer input. |
| template <typename... ARGS> |
| static ProgramFuzzer Create(std::string_view name, void (*fn)(const Program&, ARGS...)) { |
| if constexpr (sizeof...(ARGS) > 0) { |
| auto fn_with_decode = [fn](const Program& program, Slice<const std::byte> data) { |
| if (!data.data) { |
| return; |
| } |
| bytes::BufferReader reader{data}; |
| auto data_args = bytes::Decode<std::tuple<std::decay_t<ARGS>...>>(reader); |
| if (data_args == Success) { |
| auto all_args = |
| std::tuple_cat(std::tuple<const Program&>{program}, data_args.Get()); |
| std::apply(*fn, all_args); |
| } |
| }; |
| return ProgramFuzzer{name, std::move(fn_with_decode)}; |
| } else { |
| return ProgramFuzzer{ |
| name, |
| [fn](const Program& program, Slice<const std::byte>) { fn(program); }, |
| }; |
| } |
| } |
| |
| /// Name of the fuzzer function |
| std::string_view name; |
| /// The fuzzer function |
| std::function<void(const Program&, Slice<const std::byte> data)> fn; |
| }; |
| |
| /// Options for Run() |
| struct Options { |
| /// If true, the fuzzers will be run concurrently on separate threads. |
| bool run_concurrently = false; |
| }; |
| |
| /// Runs all the registered WGSL fuzzers with the supplied WGSL |
| /// @param wgsl the input WGSL |
| /// @param data additional data used for fuzzing |
| /// @param options the options for running the fuzzers |
| void Run(std::string_view wgsl, Slice<const std::byte> data, const Options& options); |
| |
| /// Registers the fuzzer function with the WGSL fuzzer executable. |
| /// @param fuzzer the fuzzer |
| void Register(const ProgramFuzzer& fuzzer); |
| |
| /// TINT_WGSL_PROGRAM_FUZZER registers the fuzzer function to run as part of `tint_wgsl_fuzzer` |
| #define TINT_WGSL_PROGRAM_FUZZER(FUNCTION) \ |
| TINT_STATIC_INIT(::tint::fuzz::wgsl::Register( \ |
| ::tint::fuzz::wgsl::ProgramFuzzer::Create(#FUNCTION, FUNCTION))) |
| |
| } // namespace tint::fuzz::wgsl |
| |
| #endif // SRC_TINT_CMD_FUZZ_WGSL_FUZZ_H_ |