1 files changed, 180 insertions, 0 deletions
diff --git a/stacker/tools/stkrc/stkrc.cpp b/stacker/tools/stkrc/stkrc.cpp
new file mode 100644
index 00000000000..38ed78e02d3
--- /dev/null
+++ b/stacker/tools/stkrc/stkrc.cpp
@@ -0,0 +1,180 @@
+//===--- stkrc.cpp --- The Stacker Compiler -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Reid Spencer and donated to the LLVM research
+// group and is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This is the "main" program for the Stacker Compiler. It is simply a utility
+//  that invokes the StackerCompiler::compile method (see StackerCompiler.cpp)
+//
+//  To get help using this utility, you can invoke it with:
+//   stkrc --help         - Output information about command line switches
+//
+//
+//===------------------------------------------------------------------------===
+
+#include "../../lib/compiler/StackerCompiler.h"
+#include "llvm/Assembly/Parser.h"
+#include "llvm/Bytecode/Writer.h"
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Streams.h"
+#include "llvm/System/Signals.h"
+#include <fstream>
+#include <iostream>
+#include <memory>
+using namespace llvm;
+
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input .st file>"), 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("Overwrite output files"));
+
+static cl::opt<uint32_t>
+StackSize("s", cl::desc("Specify program maximum stack size"),
+        cl::init(1024), cl::value_desc("stack size"));
+
+static cl::opt<bool>
+DumpAsm("d", cl::desc("Print LLVM Assembly as parsed"), cl::Hidden);
+
+#ifdef PARSE_DEBUG
+static cl::opt<bool>
+ParseDebug("g", cl::desc("Turn on Bison Debugging"), cl::Hidden);
+#endif
+
+#ifdef FLEX_DEBUG
+static cl::opt<bool>
+FlexDebug("x", cl::desc("Turn on Flex Debugging"), cl::Hidden);
+#endif
+
+static cl::opt<bool>
+EchoSource("e", cl::desc("Print Stacker Source as parsed"), cl::Hidden);
+
+enum OptLev {
+  None = 0,
+  One = 1,
+  Two = 2,
+  Three = 3,
+  Four = 4,
+  Five = 5
+};
+
+static cl::opt<OptLev> OptLevel(
+  cl::desc("Choose optimization level to apply:"),
+  cl::init(One),
+  cl::values(
+    clEnumValN(None,"O0","An alias for the -O1 option"),
+    clEnumValN(One,"O1","Optimize for compilation speed"),
+    clEnumValN(Two,"O2","Perform simple optimizations to reduce code size"),
+    clEnumValN(Three,"O3","More aggressive optimizations"),
+    clEnumValN(Four,"O4","High level of optimization"),
+    clEnumValN(Five,"O5","An alias for the -O4 option"),
+    clEnumValEnd
+  ));
+
+int main(int argc, char **argv)
+{
+  cl::ParseCommandLineOptions(argc, argv, " stacker .st -> .bc compiler\n");
+
+  std::ostream *Out = 0;
+  try {
+    StackerCompiler compiler;
+    try
+    {
+#ifdef PARSE_DEBUG
+      {
+          extern int Stackerdebug;
+          Stackerdebug = ParseDebug;
+      }
+#endif
+#ifdef FLEX_DEBUG
+      {
+          extern int Stacker_flex_debug;
+          Stacker_flex_debug = FlexDebug;
+      }
+#endif
+      // Parse the file now...
+
+      std::auto_ptr<Module> M (
+          compiler.compile(InputFilename,EchoSource,OptLevel,StackSize));
+      if (M.get() == 0) {
+        throw std::string("program didn't parse correctly.");
+      }
+
+      if (verifyModule(*M.get())) {
+        throw std::string("program parsed, but does not verify as correct!");
+      }
+
+      if (DumpAsm)
+        cerr << "Here's the assembly:" << M.get();
+
+      if (OutputFilename != "") {   // Specified an output filename?
+        if (OutputFilename != "-") {  // Not stdout?
+          if (!Force && std::ifstream(OutputFilename.c_str())) {
+            // If force is not specified, make sure not to overwrite a file!
+            throw std::string("error opening '") + OutputFilename +
+                    "': file exists!\n" +
+                    "Use -f command line argument to force output";
+            return 1;
+          }
+          Out = new std::ofstream(OutputFilename.c_str());
+        } else {                      // Specified stdout
+          Out = &std::cout;
+        }
+      } else {
+        if (InputFilename == "-") {
+          OutputFilename = "-";
+          Out = &std::cout;
+        } else {
+          std::string IFN = InputFilename;
+          int Len = IFN.length();
+          if (IFN[Len-3] == '.' && IFN[Len-2] == 's' && IFN[Len-1] == 't') {
+            // Source ends in .ll
+            OutputFilename = std::string(IFN.begin(), IFN.end()-3);
+          } else {
+            OutputFilename = IFN;   // Append a .bc to it
+          }
+          OutputFilename += ".bc";
+
+          if (!Force && std::ifstream(OutputFilename.c_str())) {
+            // If force is not specified, make sure not to overwrite a file!
+            throw std::string("error opening '") + OutputFilename +
+                    "': file exists!\n" +
+                    "Use -f command line argument to force output\n";
+          }
+
+          Out = new std::ofstream(OutputFilename.c_str());
+          // Make sure that the Out file gets unlinked from the disk if we get a
+          // SIGINT
+          sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+        }
+      }
+
+      if (!Out->good()) {
+        throw std::string("error opening ") + OutputFilename + "!";
+      }
+
+      OStream L(*Out);
+      WriteBytecodeToFile(M.get(), L);
+    } catch (const ParseError &E) {
+      cerr << argv[0] << ": " << E.getMessage() << "\n";
+      return 1;
+    }
+  }
+  catch (const std::string& msg ) {
+    cerr << argv[0] << ": " << msg << "\n";
+    return 1;
+  }
+
+  if (Out != &std::cout) delete Out;
+  return 0;
+}