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* Place a try/catch block around the entire tool to Make sure std::string
  exceptions are caught and printed before exiting the tool.
* Make sure we catch unhandled exceptions at the top level so that we don't
  abort with a useless message but indicate than an unhandled exception was
  generated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19192 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2004-12-30 05:36:08 +00:00
parent c18671cdcd
commit 1ef8bdaedb
17 changed files with 960 additions and 852 deletions
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133
tools/llvm-dis/llvm-dis.cpp
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@ -41,81 +41,88 @@ 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();
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::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);
}
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 (CWriteMode) {
std::cerr << "ERROR: llvm-dis no longer contains the C backend. "
<< "Use 'llc -march=c' instead!\n";
exit(1);
}
} else {
if (InputFilename == "-") {
OutputFilename = "-";
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());
}
}
} 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!
std::cerr << argv[0] << ": error opening '" << OutputFilename
<< "': file exists! Sending to standard output.\n";
} else {
Out = new std::ofstream(OutputFilename.c_str());
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 unlinked from the disk if we get a
// SIGINT
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
// Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
}
}
}
}
if (!Out->good()) {
std::cerr << argv[0] << ": error opening " << OutputFilename
<< ": sending to stdout instead!\n";
Out = &std::cout;
}
if (!Out->good()) {
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;
Passes.add(new PrintModulePass(Out));
Passes.run(*M.get());
// 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;
if (Out != &std::cout) {
((std::ofstream*)Out)->close();
delete Out;
}
return 0;
} catch (const std::string& msg) {
std::cerr << argv[0] << ": " << msg << "\n";
} catch (...) {
std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
}
return 0;
return 1;
}