SPIRV-Tools/tools/dis/dis.cpp
2017-05-15 17:10:07 -04:00

186 lines
5.6 KiB
C++

// 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 <string>
#include <vector>
#include "spirv-tools/libspirv.h"
#include "tools/io.h"
static void print_usage(char* argv0) {
printf(
R"(%s - Disassemble a SPIR-V binary module
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 disassembler version information.
-o <filename> Set the output filename.
Output goes to standard output if this option is
not specified, or if the filename is "-".
--no-color Don't print in color.
The default when output goes to a file.
--no-indent Don't indent instructions.
--no-header Don't output the header as leading comments.
--raw-id Show raw Id values instead of friendly names.
--offsets Show byte offsets for each instruction.
)",
argv0, argv0);
}
static const auto kDefaultEnvironment = SPV_ENV_UNIVERSAL_1_2;
int main(int argc, char** argv) {
const char* inFile = nullptr;
const char* outFile = nullptr;
bool allow_color = false;
#ifdef SPIRV_COLOR_TERMINAL
allow_color = true;
#endif
bool allow_indent = true;
bool show_byte_offsets = false;
bool no_header = false;
bool friendly_names = true;
for (int argi = 1; argi < argc; ++argi) {
if ('-' == argv[argi][0]) {
switch (argv[argi][1]) {
case 'h':
print_usage(argv[0]);
return 0;
case 'o': {
if (!outFile && argi + 1 < argc) {
outFile = argv[++argi];
} else {
print_usage(argv[0]);
return 1;
}
} break;
case '-': {
// Long options
if (0 == strcmp(argv[argi], "--no-color")) {
allow_color = false;
} else if (0 == strcmp(argv[argi], "--no-indent")) {
allow_indent = false;
} else if (0 == strcmp(argv[argi], "--offsets")) {
show_byte_offsets = true;
} else if (0 == strcmp(argv[argi], "--no-header")) {
no_header = true;
} else if (0 == strcmp(argv[argi], "--raw-id")) {
friendly_names = false;
} else if (0 == strcmp(argv[argi], "--help")) {
print_usage(argv[0]);
return 0;
} else if (0 == strcmp(argv[argi], "--version")) {
printf("%s\n", spvSoftwareVersionDetailsString());
printf("Target: %s\n",
spvTargetEnvDescription(kDefaultEnvironment));
return 0;
} else {
print_usage(argv[0]);
return 1;
}
} break;
case 0: {
// Setting a filename of "-" to indicate stdin.
if (!inFile) {
inFile = argv[argi];
} else {
fprintf(stderr, "error: More than one input file specified\n");
return 1;
}
} break;
default:
print_usage(argv[0]);
return 1;
}
} else {
if (!inFile) {
inFile = argv[argi];
} else {
fprintf(stderr, "error: More than one input file specified\n");
return 1;
}
}
}
uint32_t options = SPV_BINARY_TO_TEXT_OPTION_NONE;
if (allow_indent) options |= SPV_BINARY_TO_TEXT_OPTION_INDENT;
if (show_byte_offsets) options |= SPV_BINARY_TO_TEXT_OPTION_SHOW_BYTE_OFFSET;
if (no_header) options |= SPV_BINARY_TO_TEXT_OPTION_NO_HEADER;
if (friendly_names) options |= SPV_BINARY_TO_TEXT_OPTION_FRIENDLY_NAMES;
if (!outFile || (0 == strcmp("-", outFile))) {
// Print to standard output.
options |= SPV_BINARY_TO_TEXT_OPTION_PRINT;
if (allow_color) {
options |= SPV_BINARY_TO_TEXT_OPTION_COLOR;
}
}
// Read the input binary.
std::vector<uint32_t> contents;
if (!ReadFile<uint32_t>(inFile, "rb", &contents)) return 1;
// If printing to standard output, then spvBinaryToText should
// do the printing. In particular, colour printing on Windows is
// controlled by modifying console objects synchronously while
// outputting to the stream rather than by injecting escape codes
// into the output stream.
// If the printing option is off, then save the text in memory, so
// it can be emitted later in this function.
const bool print_to_stdout = SPV_BINARY_TO_TEXT_OPTION_PRINT & options;
spv_text text = nullptr;
spv_text* textOrNull = print_to_stdout ? nullptr : &text;
spv_diagnostic diagnostic = nullptr;
spv_context context = spvContextCreate(kDefaultEnvironment);
spv_result_t error =
spvBinaryToText(context, contents.data(), contents.size(), options,
textOrNull, &diagnostic);
spvContextDestroy(context);
if (error) {
spvDiagnosticPrint(diagnostic);
spvDiagnosticDestroy(diagnostic);
return error;
}
if (!print_to_stdout) {
if (!WriteFile<char>(outFile, "w", text->str, text->length)) {
spvTextDestroy(text);
return 1;
}
}
spvTextDestroy(text);
return 0;
}