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/*
* Copyright 2015 WebAssembly Community Group participants
*
* 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.
*/
//
// wasm2asm console tool
//
#include "support/command-line.h"
#include "s2wasm.h"
using namespace cashew;
using namespace wasm;
int main(int argc, const char *argv[]) {
Options options("s2wasm", "Link .s file into .wast");
options.add("--output", "-o", "Output file (stdout if not specified)",
Options::Arguments::One,
[](Options *o, const std::string &argument) {
o->extra["output"] = argument;
})
.add("--global-base", "-g", "Where to start to place globals",
Options::Arguments::One,
[](Options *o, const std::string &argument) {
o->extra["global-base"] = argument;
})
.add_positional("INFILE", Options::Arguments::One,
[](Options *o, const std::string &argument) {
o->extra["infile"] = argument;
});
options.parse(argc, argv);
std::string input;
{
if (options.debug) {
std::cerr << "Loading '" << options.extra["infile"] << "'..."
<< std::endl;
}
std::ifstream infile(options.extra["infile"]);
if (!infile.is_open()) {
std::cerr << "Failed opening '" << options.extra["infile"] << "'"
<< std::endl;
exit(EXIT_FAILURE);
}
infile.seekg(0, std::ios::end);
size_t insize = infile.tellg();
input.resize(insize + 1);
infile.seekg(0);
infile.read(&input[0], insize);
}
std::streambuf *buffer;
std::ofstream outfile;
if (options.extra["output"].size()) {
if (options.debug) {
std::cerr << "Opening '" << options.extra["output"] << std::endl;
}
outfile.open(options.extra["output"],
std::ofstream::out | std::ofstream::trunc);
if (!outfile.is_open()) {
std::cerr << "Failed opening '" << options.extra["output"] << "'"
<< std::endl;
exit(EXIT_FAILURE);
}
buffer = outfile.rdbuf();
} else {
buffer = std::cout.rdbuf();
}
std::ostream out(buffer);
if (options.debug) std::cerr << "Parsing and wasming..." << std::endl;
AllocatingModule wasm;
size_t globalBase = options.extra.find("global-base") != options.extra.end()
? std::stoull(options.extra["global-base"])
: 1;
if (options.debug) std::cerr << "Global base " << globalBase << '\n';
S2WasmBuilder s2wasm(wasm, input.c_str(), options.debug, globalBase);
if (options.debug) std::cerr << "Emscripten gluing..." << std::endl;
std::stringstream meta;
s2wasm.emscriptenGlue(meta);
if (options.debug) std::cerr << "Printing..." << std::endl;
out << wasm << meta.str() << std::endl;
if (options.debug) std::cerr << "Done." << std::endl;
}
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