mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-26 09:41:03 +00:00
0bd920eb9d
* Use standard function to get stdin to binary mode. The fisrt implementation to try to change stdin to binary mode is not protable. Using freopen has a lot of implementation defined behaviour, and the code relied on that working. Looking into the MSVC documentation, I do not see a protable way of doing this. I've implemented a Windows specific method and do nothing for other systems. In general, UNIX based systems do make a distinction between text and binary files, so nothing needs to be done for them. Fixes #2518 * Split ReadFile into two different functions. We want to remove the flag parameter. So the original function has been replaced with ReadBinaryFile and ReadTextFile. This should make the code more readable. * Change name of CorrectlyReadFile to avoid confusion.
128 lines
3.7 KiB
C++
128 lines
3.7 KiB
C++
// Copyright (c) 2015-2016 The Khronos Group Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cstdio>
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#include <cstring>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "spirv-tools/libspirv.h"
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#include "tools/cfg/bin_to_dot.h"
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#include "tools/io.h"
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// Prints a program usage message to stdout.
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static void print_usage(const char* argv0) {
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printf(
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R"(%s - Show the control flow graph in GraphiViz "dot" form. EXPERIMENTAL
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Usage: %s [options] [<filename>]
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The SPIR-V binary is read from <filename>. If no file is specified,
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or if the filename is "-", then the binary is read from standard input.
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Options:
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-h, --help Print this help.
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--version Display version information.
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-o <filename> Set the output filename.
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Output goes to standard output if this option is
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not specified, or if the filename is "-".
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)",
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argv0, argv0);
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}
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static const auto kDefaultEnvironment = SPV_ENV_UNIVERSAL_1_5;
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int main(int argc, char** argv) {
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const char* inFile = nullptr;
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const char* outFile = nullptr; // Stays nullptr if printing to stdout.
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for (int argi = 1; argi < argc; ++argi) {
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if ('-' == argv[argi][0]) {
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switch (argv[argi][1]) {
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case 'h':
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print_usage(argv[0]);
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return 0;
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case 'o': {
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if (!outFile && argi + 1 < argc) {
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outFile = argv[++argi];
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} else {
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print_usage(argv[0]);
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return 1;
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}
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} break;
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case '-': {
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// Long options
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if (0 == strcmp(argv[argi], "--help")) {
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print_usage(argv[0]);
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return 0;
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} else if (0 == strcmp(argv[argi], "--version")) {
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printf("%s EXPERIMENTAL\n", spvSoftwareVersionDetailsString());
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printf("Target: %s\n",
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spvTargetEnvDescription(kDefaultEnvironment));
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return 0;
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} else {
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print_usage(argv[0]);
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return 1;
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}
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} break;
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case 0: {
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// Setting a filename of "-" to indicate stdin.
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if (!inFile) {
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inFile = argv[argi];
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} else {
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fprintf(stderr, "error: More than one input file specified\n");
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return 1;
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}
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} break;
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default:
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print_usage(argv[0]);
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return 1;
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}
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} else {
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if (!inFile) {
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inFile = argv[argi];
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} else {
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fprintf(stderr, "error: More than one input file specified\n");
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return 1;
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}
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}
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}
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// Read the input binary.
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std::vector<uint32_t> contents;
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if (!ReadBinaryFile<uint32_t>(inFile, &contents)) return 1;
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spv_context context = spvContextCreate(kDefaultEnvironment);
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spv_diagnostic diagnostic = nullptr;
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std::stringstream ss;
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auto error =
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BinaryToDot(context, contents.data(), contents.size(), &ss, &diagnostic);
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if (error) {
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spvDiagnosticPrint(diagnostic);
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spvDiagnosticDestroy(diagnostic);
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spvContextDestroy(context);
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return error;
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}
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std::string str = ss.str();
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WriteFile(outFile, "w", str.data(), str.size());
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spvDiagnosticDestroy(diagnostic);
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spvContextDestroy(context);
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return 0;
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}
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