1 files changed, 111 insertions, 0 deletions
diff --git a/contrib/llvm/tools/llvm-dis/llvm-dis.cpp b/contrib/llvm/tools/llvm-dis/llvm-dis.cpp
new file mode 100644
index 0000000..b8b1a39
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+++ b/contrib/llvm/tools/llvm-dis/llvm-dis.cpp
@@ -0,0 +1,111 @@
+//===-- 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/LLVMContext.h"
+#include "llvm/Module.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#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"
+#include <memory>
+using namespace llvm;
+
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
+
+static cl::opt<std::string>
+OutputFilename("o", cl::desc("Override output filename"),
+               cl::value_desc("filename"));
+
+static cl::opt<bool>
+Force("f", cl::desc("Enable binary output on terminals"));
+
+static cl::opt<bool>
+DontPrint("disable-output", cl::desc("Don't output the .ll file"), cl::Hidden);
+
+int main(int argc, char **argv) {
+  // Print a stack trace if we signal out.
+  sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+  
+  LLVMContext &Context = getGlobalContext();
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+  
+  
+  cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
+
+  std::string ErrorMessage;
+  std::auto_ptr<Module> M;
+ 
+  if (MemoryBuffer *Buffer
+         = MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage)) {
+    M.reset(ParseBitcodeFile(Buffer, Context, &ErrorMessage));
+    delete Buffer;
+  }
+
+  if (M.get() == 0) {
+    errs() << argv[0] << ": ";
+    if (ErrorMessage.size())
+      errs() << ErrorMessage << "\n";
+    else
+      errs() << "bitcode didn't read correctly.\n";
+    return 1;
+  }
+  
+  // Just use stdout.  We won't actually print anything on it.
+  if (DontPrint)
+    OutputFilename = "-";
+  
+  if (OutputFilename.empty()) { // Unspecified output, infer it.
+    if (InputFilename == "-") {
+      OutputFilename = "-";
+    } else {
+      const std::string &IFN = InputFilename;
+      int Len = IFN.length();
+      // If the source ends in .bc, strip it off.
+      if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c')
+        OutputFilename = std::string(IFN.begin(), IFN.end()-3)+".ll";
+      else
+        OutputFilename = IFN+".ll";
+    }
+  }
+
+  // Make sure that the Out file gets unlinked from the disk if we get a
+  // SIGINT.
+  if (OutputFilename != "-")
+    sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+  std::string ErrorInfo;
+  std::auto_ptr<raw_fd_ostream> 
+  Out(new raw_fd_ostream(OutputFilename.c_str(), ErrorInfo,
+                         raw_fd_ostream::F_Binary));
+  if (!ErrorInfo.empty()) {
+    errs() << ErrorInfo << '\n';
+    return 1;
+  }
+
+  // All that llvm-dis does is write the assembly to a file.
+  if (!DontPrint)
+    *Out << *M;
+
+  return 0;
+}
+