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// Copyright (c) 2021 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.
#include <cstdint>
#include <vector>
#include "source/fuzz/fuzzer.h"
#include "source/fuzz/pseudo_random_generator.h"
#include "spirv-tools/libspirv.hpp"
#include "test/fuzzers/random_generator.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size == 0 || (size % sizeof(uint32_t)) != 0) {
// An empty binary, or a binary whose size is not a multiple of word-size,
// cannot be valid, so can be rejected immediately.
return 0;
}
std::vector<uint32_t> initial_binary(size / sizeof(uint32_t));
memcpy(initial_binary.data(), data, size);
spvtools::ValidatorOptions validator_options;
spvtools::MessageConsumer message_consumer =
[](spv_message_level_t, const char*, const spv_position_t&, const char*) {
};
spvtools::fuzzers::RandomGenerator random_gen(data, size);
auto target_env = random_gen.GetTargetEnv();
std::unique_ptr<spvtools::opt::IRContext> ir_context;
if (!spvtools::fuzz::fuzzerutil::BuildIRContext(
target_env, message_consumer, initial_binary, validator_options,
&ir_context)) {
// The input is invalid - give up.
return 0;
}
std::vector<spvtools::fuzz::fuzzerutil::ModuleSupplier> donor_suppliers = {
[&initial_binary, message_consumer, target_env,
&validator_options]() -> std::unique_ptr<spvtools::opt::IRContext> {
std::unique_ptr<spvtools::opt::IRContext> result;
if (!spvtools::fuzz::fuzzerutil::BuildIRContext(
target_env, message_consumer, initial_binary, validator_options,
&result)) {
// The input was successfully parsed and validated first time around,
// so something is wrong if it is now invalid.
abort();
}
return result;
}};
uint32_t seed = random_gen.GetUInt32(std::numeric_limits<uint32_t>::max());
auto fuzzer_context = spvtools::MakeUnique<spvtools::fuzz::FuzzerContext>(
spvtools::MakeUnique<spvtools::fuzz::PseudoRandomGenerator>(seed),
spvtools::fuzz::FuzzerContext::GetMinFreshId(ir_context.get()), false);
auto transformation_context =
spvtools::MakeUnique<spvtools::fuzz::TransformationContext>(
spvtools::MakeUnique<spvtools::fuzz::FactManager>(ir_context.get()),
validator_options);
spvtools::fuzz::Fuzzer fuzzer(
std::move(ir_context), std::move(transformation_context),
std::move(fuzzer_context), message_consumer, donor_suppliers, false,
spvtools::fuzz::RepeatedPassStrategy::kLoopedWithRecommendations, true,
validator_options);
fuzzer.Run(0);
return 0;
}
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