+//===-- llvm-dis.cpp - The low-level LLVM disassembler --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
-// LLVM 'DIS' UTILITY
//
// This utility may be invoked in the following manner:
-// dis [options] - Read LLVM bytecode from stdin, write assembly to stdout
-// dis [options] x.bc - Read LLVM bytecode from the x.bc file, write assembly
-// to the x.ll file.
+// llvm-dis [options] - Read LLVM bytecode from stdin, write asm to stdout
+// llvm-dis [options] x.bc - Read LLVM bytecode from the x.bc file, write asm
+// to the x.ll file.
// Options:
// --help - Output information about command line switches
-// -c - Print C code instead of LLVM assembly
//
//===----------------------------------------------------------------------===//
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Bytecode/Reader.h"
-#include "llvm/Assembly/CWriter.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "Support/CommandLine.h"
-#include "Support/Signals.h"
+#include "llvm/System/Signals.h"
#include <fstream>
#include <memory>
-using std::cerr;
-// OutputMode - The different orderings to print basic blocks in...
-enum OutputMode {
- llvm = 0, // Generate LLVM assembly (the default)
- c, // Generate C code
-};
+using namespace llvm;
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"),
+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));
+static cl::opt<bool>
+CWriteMode("c", cl::desc("Obsolete option, do not use"), cl::ReallyHidden);
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm .bc -> .ll disassembler\n");
+ sys::PrintStackTraceOnErrorSignal();
+
std::ostream *Out = &std::cout; // Default to printing to stdout...
+ std::string ErrorMessage;
- std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
+ if (CWriteMode) {
+ std::cerr << "ERROR: llvm-dis no longer contains the C backend. "
+ << "Use 'llc -march=c' instead!\n";
+ exit(1);
+ }
+
+ std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename, &ErrorMessage));
if (M.get() == 0) {
- cerr << argv[0] << ": bytecode didn't read correctly.\n";
+ std::cerr << argv[0] << ": ";
+ if (ErrorMessage.size())
+ std::cerr << ErrorMessage << "\n";
+ else
+ std::cerr << "bytecode didn't read correctly.\n";
return 1;
}
if (OutputFilename != "") { // Specified an output filename?
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- cerr << argv[0] << ": error opening '" << OutputFilename
- << "': file exists! Sending to standard output.\n";
- } else {
- Out = new std::ofstream(OutputFilename.c_str());
+ 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 == "-") {
int Len = IFN.length();
if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
// Source ends in .bc
- OutputFilename = std::string(IFN.begin(), IFN.end()-3);
+ OutputFilename = std::string(IFN.begin(), IFN.end()-3)+".ll";
} else {
- OutputFilename = IFN; // Append a .ll to it
+ OutputFilename = IFN+".ll";
}
- 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!
- cerr << argv[0] << ": error opening '" << OutputFilename
- << "': file exists! Sending to standard output.\n";
+ 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
+ // Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
- RemoveFileOnSignal(OutputFilename);
+ sys::RemoveFileOnSignal(OutputFilename);
}
}
}
if (!Out->good()) {
- cerr << argv[0] << ": error opening " << OutputFilename
- << ": sending to stdout instead!\n";
+ std::cerr << argv[0] << ": error opening " << OutputFilename
+ << ": sending to stdout instead!\n";
Out = &std::cout;
}
// All that dis does is write the assembly or C out to a file...
//
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;
- }
-
+ Passes.add(new PrintModulePass(Out));
Passes.run(*M.get());
if (Out != &std::cout) {