You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
3.1 KiB
71 lines
3.1 KiB
/*
|
|
* Copyright 2020 The Android Open Source Project
|
|
*
|
|
* 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 <functional>
|
|
|
|
#include "fuzzer/FuzzedDataProvider.h"
|
|
#include "utils/BitSet.h"
|
|
static constexpr uint8_t MAX_OPERATIONS = 50;
|
|
|
|
// We need to handle both 32 and 64 bit bitsets, so we use a function template
|
|
// here. Sadly, std::function can't be generic, so we generate a vector of
|
|
// std::functions using this function.
|
|
template <typename T>
|
|
std::vector<std::function<void(T, uint32_t)>> getOperationsForType() {
|
|
return {
|
|
[](T bs, uint32_t val) -> void { bs.markBit(val); },
|
|
[](T bs, uint32_t val) -> void { bs.valueForBit(val); },
|
|
[](T bs, uint32_t val) -> void { bs.hasBit(val); },
|
|
[](T bs, uint32_t val) -> void { bs.clearBit(val); },
|
|
[](T bs, uint32_t val) -> void { bs.getIndexOfBit(val); },
|
|
[](T bs, uint32_t) -> void { bs.clearFirstMarkedBit(); },
|
|
[](T bs, uint32_t) -> void { bs.markFirstUnmarkedBit(); },
|
|
[](T bs, uint32_t) -> void { bs.clearLastMarkedBit(); },
|
|
[](T bs, uint32_t) -> void { bs.clear(); },
|
|
[](T bs, uint32_t) -> void { bs.count(); },
|
|
[](T bs, uint32_t) -> void { bs.isEmpty(); },
|
|
[](T bs, uint32_t) -> void { bs.isFull(); },
|
|
[](T bs, uint32_t) -> void { bs.firstMarkedBit(); },
|
|
[](T bs, uint32_t) -> void { bs.lastMarkedBit(); },
|
|
};
|
|
}
|
|
|
|
// Our operations for 32 and 64 bit bitsets
|
|
static const std::vector<std::function<void(android::BitSet32, uint32_t)>> thirtyTwoBitOps =
|
|
getOperationsForType<android::BitSet32>();
|
|
static const std::vector<std::function<void(android::BitSet64, uint32_t)>> sixtyFourBitOps =
|
|
getOperationsForType<android::BitSet64>();
|
|
|
|
void runOperationFor32Bit(android::BitSet32 bs, uint32_t bit, uint8_t operation) {
|
|
thirtyTwoBitOps[operation](bs, bit);
|
|
}
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
|
|
FuzzedDataProvider dataProvider(data, size);
|
|
uint32_t thirty_two_base = dataProvider.ConsumeIntegral<uint32_t>();
|
|
uint64_t sixty_four_base = dataProvider.ConsumeIntegral<uint64_t>();
|
|
android::BitSet32 b1 = android::BitSet32(thirty_two_base);
|
|
android::BitSet64 b2 = android::BitSet64(sixty_four_base);
|
|
|
|
size_t opsRun = 0;
|
|
while (dataProvider.remaining_bytes() > 0 && opsRun++ < MAX_OPERATIONS) {
|
|
uint32_t bit = dataProvider.ConsumeIntegral<uint32_t>();
|
|
uint8_t op = dataProvider.ConsumeIntegral<uint8_t>();
|
|
thirtyTwoBitOps[op % thirtyTwoBitOps.size()](b1, bit);
|
|
sixtyFourBitOps[op % sixtyFourBitOps.size()](b2, bit);
|
|
}
|
|
return 0;
|
|
}
|