//===-- 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.
-//
+//
//===----------------------------------------------------------------------===//
//
// This utility may be invoked in the following manner:
-// 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
+// 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/Module.h"
#include "llvm/PassManager.h"
-#include "llvm/Bytecode/Reader.h"
+#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Assembly/PrintModulePass.h"
-#include "Support/CommandLine.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Streams.h"
#include "llvm/System/Signals.h"
+#include <iostream>
#include <fstream>
#include <memory>
-
using namespace llvm;
static cl::opt<std::string>
-InputFilename(cl::Positional, cl::desc("<input bytecode>"), cl::init("-"));
+InputFilename(cl::Positional, cl::desc("<input bitcode>"), 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<bool>
-CWriteMode("c", cl::desc("Obsolete option, do not use"), cl::ReallyHidden);
+DontPrint("disable-output", cl::desc("Don't output the .ll file"), cl::Hidden);
int main(int argc, char **argv) {
- cl::ParseCommandLineOptions(argc, argv, " llvm .bc -> .ll disassembler\n");
- PrintStackTraceOnErrorSignal();
-
- std::ostream *Out = &std::cout; // Default to printing to stdout...
- std::string ErrorMessage;
-
- if (CWriteMode) {
- std::cerr << "ERROR: llvm-dis no longer contains the C backend. "
- << "Use 'llc -march=c' instead!\n";
- exit(1);
- }
+ llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
+ try {
+ 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;
+
+ if (MemoryBuffer *Buffer
+ = MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage)) {
+ M.reset(ParseBitcodeFile(Buffer, &ErrorMessage));
+ delete Buffer;
+ }
- 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 != "") { // 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());
- }
+ if (M.get() == 0) {
+ cerr << argv[0] << ": ";
+ if (ErrorMessage.size())
+ cerr << ErrorMessage << "\n";
+ else
+ cerr << "bitcode didn't read correctly.\n";
+ return 1;
}
- } else {
- if (InputFilename == "-") {
- OutputFilename = "-";
+
+ if (DontPrint) {
+ // Just use stdout. We won't actually print anything on it.
+ } else 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!
+ cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists! Sending to standard output.\n";
+ } else {
+ Out = new std::ofstream(OutputFilename.c_str());
+ }
+ }
} else {
- 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 = std::string(IFN.begin(), IFN.end()-3)+".ll";
+ if (InputFilename == "-") {
+ OutputFilename = "-";
} else {
- OutputFilename = IFN+".ll";
+ 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 = std::string(IFN.begin(), IFN.end()-3)+".ll";
+ } else {
+ OutputFilename = IFN+".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";
+ } else {
+ 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 (!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());
+ if (!Out->good()) {
+ cerr << argv[0] << ": error opening " << OutputFilename
+ << ": sending to stdout instead!\n";
+ Out = &std::cout;
+ }
- // Make sure that the Out file gets unlinked from the disk if we get a
- // SIGINT
- RemoveFileOnSignal(OutputFilename);
- }
+ // All that llvm-dis does is write the assembly to a file.
+ if (!DontPrint) {
+ PassManager Passes;
+ OStream L(*Out);
+ Passes.add(new PrintModulePass(&L));
+ Passes.run(*M.get());
}
- }
- if (!Out->good()) {
- std::cerr << argv[0] << ": error opening " << OutputFilename
- << ": sending to stdout instead!\n";
- Out = &std::cout;
+ if (Out != &std::cout) {
+ ((std::ofstream*)Out)->close();
+ delete Out;
+ }
+ return 0;
+ } catch (const std::string& msg) {
+ cerr << argv[0] << ": " << msg << "\n";
+ } catch (...) {
+ cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
}
- // All that dis does is write the assembly or C out to a file...
- //
- PassManager Passes;
- Passes.add(new PrintModulePass(Out));
- Passes.run(*M.get());
-
- if (Out != &std::cout) {
- ((std::ofstream*)Out)->close();
- delete Out;
- }
- return 0;
+ return 1;
}
projects / oota-llvm.git / blobdiff