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86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
//===------------------------------------------------------------------------===
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// LLVM 'AS' UTILITY
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//
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// This utility may be invoked in the following manner:
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// as --help - Output information about command line switches
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// as [options] - Read LLVM assembly from stdin, write bytecode to stdout
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// as [options] x.ll - Read LLVM assembly from the x.ll file, write bytecode
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// to the x.bc file.
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//
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//===------------------------------------------------------------------------===
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#include <iostream.h>
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#include <fstream.h>
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#include <string>
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#include "llvm/Module.h"
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#include "llvm/Assembly/Parser.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/Bytecode/Writer.h"
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#include "llvm/Tools/CommandLine.h"
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int main(int argc, char **argv) {
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ToolCommandLine Opts(argc, argv);
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bool DumpAsm = false;
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for (int i = 1; i < argc; i++) {
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if (string(argv[i]) == string("-d")) {
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argv[i] = 0; DumpAsm = true;
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}
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}
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bool PrintMessage = false;
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for (int i = 1; i < argc; i++) {
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if (argv[i] == 0) continue;
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if (string(argv[i]) == string("--help")) {
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PrintMessage = true;
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} else {
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cerr << argv[0] << ": argument not recognized: '" << argv[i] << "'!\n";
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}
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}
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if (PrintMessage) {
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cerr << argv[0] << " usage:\n"
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<< " " << argv[0] << " --help - Print this usage information\n"
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<< " " << argv[0] << " x.ll - Parse <x.ll> file and output "
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<< "bytecodes to x.bc\n"
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<< " " << argv[0] << " - Parse stdin and write to stdout.\n";
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return 1;
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}
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ostream *Out = &cout; // Default to output to stdout...
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try {
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// Parse the file now...
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Module *C = ParseAssemblyFile(Opts);
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if (C == 0) {
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cerr << "assembly didn't read correctly.\n";
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return 1;
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}
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if (DumpAsm)
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cerr << "Here's the assembly:\n" << C;
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if (Opts.getOutputFilename() != "-") {
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Out = new ofstream(Opts.getOutputFilename().c_str(),
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(Opts.getForce() ? 0 : ios::noreplace)|ios::out);
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if (!Out->good()) {
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cerr << "Error opening " << Opts.getOutputFilename() << "!\n";
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delete C;
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return 1;
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}
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}
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WriteBytecodeToFile(C, *Out);
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delete C;
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} catch (const ParseException &E) {
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cerr << E.getMessage() << endl;
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return 1;
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}
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if (Out != &cout) delete Out;
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return 0;
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}
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