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Choose black-box fuzzer back-end based on data 

Instead of uploading separate black-box fuzzers for each target
language, it will be more convenient to have the target language chosen
based on the data file being processed. This change facilitates that.

Bug: https://crbug.com/1246587
Change-Id: I39f225835f8ca06cb8b8ea1c791b6c872f0f9d8f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/66180
Auto-Submit: Alastair Donaldson <afdx@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
This commit is contained in:
Alastair Donaldson 2021-10-12 17:08:27 +00:00 committed by Tint LUCI CQ
parent 37a666d91c
commit 8f780f1022
1 changed files with 68 additions and 29 deletions
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61
fuzzers/tint_black_box_fuzz_target.cc
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@ -23,6 +23,15 @@
namespace {
/// Controls the target language in which code will be generated.
enum class TargetLanguage {
kHlsl,
kMsl,
kSpv,
kWgsl,
kTargetLanguageMax,
};
/// Copies the content from the file named `input_file` to `buffer`,
/// assuming each element in the file is of type `T`. If any error occurs,
/// writes error messages to the standard error stream and returns false.
@ -80,45 +89,75 @@ bool ReadFile(const std::string& input_file, std::vector<T>* buffer) {
} // namespace
int main(int argc, const char** argv) {
if (argc != 3) {
std::cerr << "Usage: " << argv[0] << " <input file> <hlsl|msl|spv|wgsl>"
if (argc < 2 || argc > 3) {
std::cerr << "Usage: " << argv[0] << " <input file> [hlsl|msl|spv|wgsl]"
<< std::endl;
return 1;
}
std::string input_filename(argv[1]);
std::string target_format(argv[2]);
std::vector<uint8_t> data;
if (!ReadFile<uint8_t>(input_filename, &data)) {
return 1;
}
if (target_format == "hlsl") {
if (data.empty()) {
return 0;
}
tint::fuzzers::DataBuilder builder(data.data(), data.size());
TargetLanguage target_language;
if (argc == 3) {
std::string target_language_string = argv[2];
if (target_language_string == "hlsl") {
target_language = TargetLanguage::kHlsl;
} else if (target_language_string == "msl") {
target_language = TargetLanguage::kMsl;
} else if (target_language_string == "spv") {
target_language = TargetLanguage::kSpv;
} else {
assert(target_language_string == "wgsl" && "Unknown target language.");
target_language = TargetLanguage::kWgsl;
}
} else {
target_language = builder.enum_class<TargetLanguage>(
static_cast<uint32_t>(TargetLanguage::kTargetLanguageMax));
}
switch (target_language) {
case TargetLanguage::kHlsl: {
tint::fuzzers::CommonFuzzer fuzzer(tint::fuzzers::InputFormat::kWGSL,
tint::fuzzers::OutputFormat::kHLSL);
return fuzzer.Run(data.data(), data.size());
} else if (target_format == "msl") {
tint::fuzzers::DataBuilder builder(data.data(), data.size());
}
case TargetLanguage::kMsl: {
tint::writer::msl::Options options;
GenerateMslOptions(&builder, &options);
tint::fuzzers::CommonFuzzer fuzzer(tint::fuzzers::InputFormat::kWGSL,
tint::fuzzers::OutputFormat::kMSL);
fuzzer.SetOptionsMsl(options);
return fuzzer.Run(data.data(), data.size());
} else if (target_format == "spv") {
tint::fuzzers::DataBuilder builder(data.data(), data.size());
}
case TargetLanguage::kSpv: {
tint::writer::spirv::Options options;
GenerateSpirvOptions(&builder, &options);
tint::fuzzers::CommonFuzzer fuzzer(tint::fuzzers::InputFormat::kWGSL,
tint::fuzzers::OutputFormat::kSpv);
fuzzer.SetOptionsSpirv(options);
return fuzzer.Run(data.data(), data.size());
} else if (target_format == "wgsl") {
}
case TargetLanguage::kWgsl: {
tint::fuzzers::CommonFuzzer fuzzer(tint::fuzzers::InputFormat::kWGSL,
tint::fuzzers::OutputFormat::kWGSL);
return fuzzer.Run(data.data(), data.size());
}
assert(false && "Fuzzer configuration problem: unknown target format.");
return 1;
default:
std::cerr << "Aborting due to unknown target language; fuzzer must be "
"misconfigured."
<< std::endl;
abort();
}
}