Add a skeleton driver for new machine code level fun. llvm-mc is meant
to be a test driver of other components in the system, which will develop
over time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73732 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
new file mode 100644
index 0000000..80a83d9
--- /dev/null
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -0,0 +1,61 @@
+//===-- llvm-dis.cpp - The low-level LLVM disassembler --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This utility may be invoked in the following manner:
+// llvm-dis [options] - Read LLVM bitcode from stdin, write asm to stdout
+// llvm-dis [options] x.bc - Read LLVM bitcode from the x.bc file, write asm
+// to the x.ll file.
+// Options:
+// --help - Output information about command line switches
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Signals.h"
+using namespace llvm;
+
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
+
+static cl::opt<std::string>
+OutputFilename("o", cl::desc("Output filename"),
+ cl::value_desc("filename"));
+
+int main(int argc, char **argv) {
+ // Print a stack trace if we signal out.
+ sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+
+ cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n");
+
+ std::string ErrorMessage;
+
+ MemoryBuffer *Buffer
+ = MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage);
+
+ if (Buffer == 0) {
+ errs() << argv[0] << ": ";
+ if (ErrorMessage.size())
+ errs() << ErrorMessage << "\n";
+ else
+ errs() << "input file didn't read correctly.\n";
+ return 1;
+ }
+
+
+
+ return 0;
+}
+