| // Copyright (c) 2019 Google LLC |
| // |
| // 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 SOURCE_FUZZ_FUZZER_PASS_DONATE_MODULES_H_ |
| #define SOURCE_FUZZ_FUZZER_PASS_DONATE_MODULES_H_ |
| |
| #include <vector> |
| |
| #include "source/fuzz/fuzzer_pass.h" |
| #include "source/fuzz/fuzzer_util.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| // A fuzzer pass that randomly adds code from other SPIR-V modules to the module |
| // being transformed. |
| class FuzzerPassDonateModules : public FuzzerPass { |
| public: |
| FuzzerPassDonateModules( |
| opt::IRContext* ir_context, FactManager* fact_manager, |
| FuzzerContext* fuzzer_context, |
| protobufs::TransformationSequence* transformations, |
| const std::vector<fuzzerutil::ModuleSupplier>& donor_suppliers); |
| |
| ~FuzzerPassDonateModules(); |
| |
| void Apply() override; |
| |
| // Donates the global declarations and functions of |donor_ir_context| into |
| // the fuzzer pass's IR context. |make_livesafe| dictates whether the |
| // functions of the donated module will be made livesafe (see |
| // FactFunctionIsLivesafe). |
| void DonateSingleModule(opt::IRContext* donor_ir_context, bool make_livesafe); |
| |
| private: |
| // Adapts a storage class coming from a donor module so that it will work |
| // in a recipient module, e.g. by changing Uniform to Private. |
| static SpvStorageClass AdaptStorageClass(SpvStorageClass donor_storage_class); |
| |
| // Identifies all external instruction set imports in |donor_ir_context| and |
| // populates |original_id_to_donated_id| with a mapping from the donor's id |
| // for such an import to a corresponding import in the recipient. Aborts if |
| // no such corresponding import is available. |
| void HandleExternalInstructionImports( |
| opt::IRContext* donor_ir_context, |
| std::map<uint32_t, uint32_t>* original_id_to_donated_id); |
| |
| // Considers all types, globals, constants and undefs in |donor_ir_context|. |
| // For each instruction, uses |original_to_donated_id| to map its result id to |
| // either (1) the id of an existing identical instruction in the recipient, or |
| // (2) to a fresh id, in which case the instruction is also added to the |
| // recipient (with any operand ids that it uses being remapped via |
| // |original_id_to_donated_id|). |
| void HandleTypesAndValues( |
| opt::IRContext* donor_ir_context, |
| std::map<uint32_t, uint32_t>* original_id_to_donated_id); |
| |
| // Assumes that |donor_ir_context| does not exhibit recursion. Considers the |
| // functions in |donor_ir_context|'s call graph in a reverse-topologically- |
| // sorted order (leaves-to-root), adding each function to the recipient |
| // module, rewritten to use fresh ids and using |original_id_to_donated_id| to |
| // remap ids. The |make_livesafe| argument captures whether the functions in |
| // the module are required to be made livesafe before being added to the |
| // recipient. |
| void HandleFunctions(opt::IRContext* donor_ir_context, |
| std::map<uint32_t, uint32_t>* original_id_to_donated_id, |
| bool make_livesafe); |
| |
| // Returns the ids of all functions in |context| in a topological order in |
| // relation to the call graph of |context|, which is assumed to be recursion- |
| // free. |
| static std::vector<uint32_t> GetFunctionsInCallGraphTopologicalOrder( |
| opt::IRContext* context); |
| |
| // Functions that supply SPIR-V modules |
| std::vector<fuzzerutil::ModuleSupplier> donor_suppliers_; |
| }; |
| |
| } // namespace fuzz |
| } // namespace spvtools |
| |
| #endif // SOURCE_FUZZ_FUZZER_PASS_DONATE_MODULES_H_ |