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// 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_REPLAYER_H_
#define SOURCE_FUZZ_REPLAYER_H_
#include <memory>
#include <vector>
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/fuzz/transformation_context.h"
#include "source/opt/ir_context.h"
#include "spirv-tools/libspirv.hpp"
namespace spvtools {
namespace fuzz {
// Transforms a SPIR-V module into a semantically equivalent SPIR-V module by
// applying a series of pre-defined transformations.
class Replayer {
public:
// Possible statuses that can result from running the replayer.
enum class ReplayerResultStatus {
kComplete,
kFailedToCreateSpirvToolsInterface,
kInitialBinaryInvalid,
kReplayValidationFailure,
kTooManyTransformationsRequested,
};
struct ReplayerResult {
ReplayerResultStatus status;
std::unique_ptr<opt::IRContext> transformed_module;
std::unique_ptr<TransformationContext> transformation_context;
protobufs::TransformationSequence applied_transformations;
};
Replayer(spv_target_env target_env, MessageConsumer consumer,
const std::vector<uint32_t>& binary_in,
const protobufs::FactSequence& initial_facts,
const protobufs::TransformationSequence& transformation_sequence_in,
uint32_t num_transformations_to_apply, bool validate_during_replay,
spv_validator_options validator_options);
// Disables copy/move constructor/assignment operations.
Replayer(const Replayer&) = delete;
Replayer(Replayer&&) = delete;
Replayer& operator=(const Replayer&) = delete;
Replayer& operator=(Replayer&&) = delete;
~Replayer();
// Attempts to apply the first |num_transformations_to_apply_| transformations
// from |transformation_sequence_in_| to |binary_in_|. Initial facts about
// the input binary and the context in which it will execute are provided via
// |initial_facts_|.
//
// On success, returns a successful result status together with the
// transformations that were applied, the IR for the transformed module, and
// the transformation context that arises from applying these transformations.
// Otherwise, returns an appropriate result status, an empty transformation
// sequence, and null pointers for the IR context and transformation context.
ReplayerResult Run();
private:
// Target environment.
const spv_target_env target_env_;
// Message consumer.
MessageConsumer consumer_;
// The binary to which transformations are to be applied.
const std::vector<uint32_t>& binary_in_;
// Initial facts known to hold in advance of applying any transformations.
const protobufs::FactSequence& initial_facts_;
// The transformations to be replayed.
const protobufs::TransformationSequence& transformation_sequence_in_;
// The number of transformations that should be replayed.
const uint32_t num_transformations_to_apply_;
// Controls whether the validator should be run after every replay step.
const bool validate_during_replay_;
// Options to control validation
spv_validator_options validator_options_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_REPLAYER_H_
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