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// Copyright (c) 2015-2016 The Khronos Group Inc.
//
// 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 <cstdio>
#include <cstring>
#include <sstream>
#include <string>
#include <vector>
#include "spirv-tools/libspirv.h"
#include "tools/cfg/bin_to_dot.h"
#include "tools/io.h"
#include "tools/util/flags.h"
static const auto kDefaultEnvironment = SPV_ENV_UNIVERSAL_1_6;
static const std::string kHelpText =
R"(%s - Show the control flow graph in GraphiViz "dot" form. EXPERIMENTAL
Usage: %s [options] [<filename>]
The SPIR-V binary is read from <filename>. If no file is specified,
or if the filename is "-", then the binary is read from standard input.
Options:
-h, --help Print this help.
--version Display version information.
-o <filename> Set the output filename.
Output goes to standard output if this option is
not specified, or if the filename is "-".
)";
// clang-format off
FLAG_SHORT_bool( h, /* default_value= */ false, /* required= */ false);
FLAG_LONG_bool( help, /* default_value= */ false, /* required= */false);
FLAG_LONG_bool( version, /* default_value= */ false, /* required= */ false);
FLAG_SHORT_string(o, /* default_value= */ "", /* required= */ false);
// clang-format on
int main(int, const char** argv) {
if (!flags::Parse(argv)) {
return 1;
}
if (flags::h.value() || flags::help.value()) {
printf(kHelpText.c_str(), argv[0], argv[0]);
return 0;
}
if (flags::version.value()) {
printf("%s EXPERIMENTAL\n", spvSoftwareVersionDetailsString());
printf("Target: %s\n", spvTargetEnvDescription(kDefaultEnvironment));
return 0;
}
if (flags::positional_arguments.size() != 1) {
fprintf(stderr, "error: exactly one input file must be specified.\n");
return 1;
}
std::string inFile = flags::positional_arguments[0];
std::string outFile = flags::o.value();
// Read the input binary.
std::vector<uint32_t> contents;
if (!ReadBinaryFile(inFile.c_str(), &contents)) return 1;
spv_context context = spvContextCreate(kDefaultEnvironment);
spv_diagnostic diagnostic = nullptr;
std::stringstream ss;
auto error =
BinaryToDot(context, contents.data(), contents.size(), &ss, &diagnostic);
if (error) {
spvDiagnosticPrint(diagnostic);
spvDiagnosticDestroy(diagnostic);
spvContextDestroy(context);
return error;
}
std::string str = ss.str();
WriteFile(outFile.empty() ? nullptr : outFile.c_str(), "w", str.data(),
str.size());
spvDiagnosticDestroy(diagnostic);
spvContextDestroy(context);
return 0;
}
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