1 //===-- llvm-ranlib.cpp - LLVM archive index generator --------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Adds or updates an index (symbol table) for an LLVM archive file. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/LLVMContext.h" 15 #include "llvm/Module.h" 16 #include "llvm/Bitcode/Archive.h" 17 #include "llvm/Support/CommandLine.h" 18 #include "llvm/Support/FileSystem.h" 19 #include "llvm/Support/ManagedStatic.h" 20 #include "llvm/Support/PrettyStackTrace.h" 21 #include "llvm/Support/Format.h" 22 #include "llvm/Support/raw_ostream.h" 23 #include "llvm/Support/Signals.h" 24 #include <memory> 25 using namespace llvm; 26 27 // llvm-ar operation code and modifier flags 28 static cl::opt<std::string> 29 ArchiveName(cl::Positional, cl::Optional, cl::desc("<archive-file>")); 30 31 static cl::opt<bool> 32 Verbose("verbose",cl::Optional,cl::init(false), 33 cl::desc("Print the symbol table")); 34 35 // printSymbolTable - print out the archive's symbol table. 36 void printSymbolTable(Archive* TheArchive) { 37 outs() << "\nArchive Symbol Table:\n"; 38 const Archive::SymTabType& symtab = TheArchive->getSymbolTable(); 39 for (Archive::SymTabType::const_iterator I=symtab.begin(), E=symtab.end(); 40 I != E; ++I ) { 41 unsigned offset = TheArchive->getFirstFileOffset() + I->second; 42 outs() << " " << format("%9u", offset) << "\t" << I->first <<"\n"; 43 } 44 } 45 46 int main(int argc, char **argv) { 47 // Print a stack trace if we signal out. 48 llvm::sys::PrintStackTraceOnErrorSignal(); 49 llvm::PrettyStackTraceProgram X(argc, argv); 50 51 LLVMContext &Context = getGlobalContext(); 52 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 53 54 // Have the command line options parsed and handle things 55 // like --help and --version. 56 cl::ParseCommandLineOptions(argc, argv, 57 "LLVM Archive Index Generator (llvm-ranlib)\n\n" 58 " This program adds or updates an index of bitcode symbols\n" 59 " to an LLVM archive file." 60 ); 61 62 int exitCode = 0; 63 64 // Make sure we don't exit with "unhandled exception". 65 try { 66 67 // Check the path name of the archive 68 sys::Path ArchivePath; 69 if (!ArchivePath.set(ArchiveName)) 70 throw std::string("Archive name invalid: ") + ArchiveName; 71 72 // Make sure it exists, we don't create empty archives 73 bool Exists; 74 if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists) 75 throw std::string("Archive file does not exist"); 76 77 std::string err_msg; 78 std::auto_ptr<Archive> 79 AutoArchive(Archive::OpenAndLoad(ArchivePath, Context, &err_msg)); 80 Archive* TheArchive = AutoArchive.get(); 81 if (!TheArchive) 82 throw err_msg; 83 84 if (TheArchive->writeToDisk(true, false, false, &err_msg )) 85 throw err_msg; 86 87 if (Verbose) 88 printSymbolTable(TheArchive); 89 90 } catch (const char* msg) { 91 errs() << argv[0] << ": " << msg << "\n\n"; 92 exitCode = 1; 93 } catch (const std::string& msg) { 94 errs() << argv[0] << ": " << msg << "\n"; 95 exitCode = 2; 96 } catch (...) { 97 errs() << argv[0] << ": An unexpected unknown exception occurred.\n"; 98 exitCode = 3; 99 } 100 return exitCode; 101 } 102
