-//===------------------------------------------------------------------------===
+//===----------------------------------------------------------------------===//
// LLVM 'DIS' UTILITY
//
// This utility may be invoked in the following manner:
// to the x.ll file.
// Options:
// --help - Output information about command line switches
-// -dfo - Print basic blocks in depth first order
-// -rdfo - Print basic blocks in reverse depth first order
-// -po - Print basic blocks in post order
-// -rpo - Print basic blocks in reverse post order
+// -c - Print C code instead of LLVM assembly
//
-// TODO: add -vcg which prints VCG compatible output.
-//
-//===------------------------------------------------------------------------===
+//===----------------------------------------------------------------------===//
-#include <iostream.h>
-#include <fstream.h>
#include "llvm/Module.h"
-#include "llvm/Assembly/Writer.h"
+#include "llvm/PassManager.h"
#include "llvm/Bytecode/Reader.h"
-#include "llvm/Tools/CommandLine.h"
-#include "llvm/Method.h"
-#include "llvm/CFG.h"
+#include "llvm/Assembly/CWriter.h"
+#include "llvm/Assembly/PrintModulePass.h"
+#include "Support/CommandLine.h"
+#include "Support/Signals.h"
+#include <fstream>
+#include <memory>
// OutputMode - The different orderings to print basic blocks in...
enum OutputMode {
- Default = 0, // Method Order (list order)
- dfo, // Depth First ordering
- rdfo, // Reverse Depth First ordering
- po, // Post Order
- rpo, // Reverse Post Order
+ llvm = 0, // Generate LLVM assembly (the default)
+ c, // Generate C code
};
-cl::String InputFilename ("", "Load <arg> file, print as assembly", 0, "-");
-cl::String OutputFilename("o", "Override output filename", 0, "");
-cl::Flag Force ("f", "Overwrite output files", 0, false);
-cl::EnumFlags<enum OutputMode> WriteMode(cl::NoFlags,
- clEnumVal(Default, "Write bb's in bytecode order"),
- clEnumVal(dfo , "Write bb's in depth first order"),
- clEnumVal(rdfo , "Write bb's in reverse DFO"),
- clEnumVal(po , "Write bb's in postorder"),
- clEnumVal(rpo , "Write bb's in reverse postorder"), 0);
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input bytecode>"), 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<enum OutputMode>
+WriteMode(cl::desc("Specify the output format:"),
+ cl::values(
+ clEnumVal(llvm, "Output LLVM assembly"),
+ clEnumVal(c , "Output C code for program"),
+ 0));
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm .bc -> .ll disassembler\n");
- ostream *Out = &cout; // Default to printing to stdout...
+ std::ostream *Out = &std::cout; // Default to printing to stdout...
+ std::string ErrorMessage;
- Module *C = ParseBytecodeFile(InputFilename.getValue());
- if (C == 0) {
- cerr << "bytecode didn't read correctly.\n";
+ std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename, &ErrorMessage));
+ if (M.get() == 0) {
+ std::cerr << argv[0] << ": ";
+ if (ErrorMessage.size())
+ std::cerr << ErrorMessage << "\n";
+ else
+ std::cerr << "bytecode didn't read correctly.\n";
return 1;
}
- if (OutputFilename.getValue() != "") { // Specified an output filename?
- Out = new ofstream(OutputFilename.getValue().c_str(),
- (Force.getValue() ? 0 : ios::noreplace)|ios::out);
+ 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!
+ std::cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists! Sending to standard output.\n";
+ } else {
+ Out = new std::ofstream(OutputFilename.c_str());
+ }
+ }
} else {
- if (InputFilename.getValue() == "-") {
- OutputFilename.setValue("-");
- Out = &cout;
+ if (InputFilename == "-") {
+ OutputFilename = "-";
} else {
- string IFN = InputFilename.getValue();
+ std::string IFN = InputFilename;
int Len = IFN.length();
if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
// Source ends in .bc
- OutputFilename.setValue(string(IFN.begin(), IFN.end()-3));
+ OutputFilename = std::string(IFN.begin(), IFN.end()-3);
} else {
- OutputFilename.setValue(IFN); // Append a .ll to it
+ OutputFilename = IFN; // Append a .ll to it
+ }
+ if (WriteMode == c)
+ OutputFilename += ".c";
+ else
+ OutputFilename += ".ll";
+
+ if (!Force && std::ifstream(OutputFilename.c_str())) {
+ // If force is not specified, make sure not to overwrite a file!
+ std::cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists! Sending to standard output.\n";
+ } else {
+ Out = new std::ofstream(OutputFilename.c_str());
+
+ // Make sure that the Out file gets unlink'd from the disk if we get a
+ // SIGINT
+ RemoveFileOnSignal(OutputFilename);
}
- OutputFilename.setValue(OutputFilename.getValue() + ".ll");
- Out = new ofstream(OutputFilename.getValue().c_str(),
- (Force.getValue() ? 0 : ios::noreplace)|ios::out);
}
}
if (!Out->good()) {
- cerr << "Error opening " << OutputFilename.getValue()
- << ": sending to stdout instead!\n";
- Out = &cout;
+ std::cerr << argv[0] << ": error opening " << OutputFilename
+ << ": sending to stdout instead!\n";
+ Out = &std::cout;
}
- // All that dis does is write the assembly out to a file... which is exactly
- // what the writer library is supposed to do...
+ // All that dis does is write the assembly or C out to a file...
//
- if (WriteMode.getValue() == Default) {
- (*Out) << C; // Print out in list order
- } else {
- // TODO: This does not print anything other than the basic blocks in the
- // methods... more should definately be printed. It should be valid output
- // consumable by the assembler.
- //
- for (Module::iterator I = C->begin(), End = C->end(); I != End; ++I) {
- Method *M = *I;
- (*Out) << "-------------- Method: " << M->getName() << " -------------\n";
-
- switch (WriteMode.getValue()) {
- case dfo: // Depth First ordering
- copy(cfg::df_begin(M), cfg::df_end(M),
- ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- case rdfo: // Reverse Depth First ordering
- copy(cfg::df_begin(M, true), cfg::df_end(M),
- ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- case po: // Post Order
- copy(cfg::po_begin(M), cfg::po_end(M),
- ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- case rpo: { // Reverse Post Order
- cfg::ReversePostOrderTraversal RPOT(M);
- copy(RPOT.begin(), RPOT.end(),
- ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- }
- default:
- abort();
- break;
- }
- }
+ PassManager Passes;
+
+ switch (WriteMode) {
+ case llvm: // Output LLVM assembly
+ Passes.add(new PrintModulePass(Out));
+ break;
+ case c: // Convert LLVM to C
+ Passes.add(createWriteToCPass(*Out));
+ break;
}
- delete C;
- if (Out != &cout) delete Out;
+ Passes.run(*M.get());
+
+ if (Out != &std::cout) {
+ ((std::ofstream*)Out)->close();
+ delete Out;
+ }
return 0;
}
+
projects / oota-llvm.git / blobdiff