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/IR/LLVMContext.h"
15 #include "llvm/Bitcode/Archive.h"
16 #include "llvm/IR/Module.h"
17 #include "llvm/Support/CommandLine.h"
18 #include "llvm/Support/FileSystem.h"
19 #include "llvm/Support/Format.h"
20 #include "llvm/Support/ManagedStatic.h"
21 #include "llvm/Support/PrettyStackTrace.h"
22 #include "llvm/Support/Signals.h"
23 #include "llvm/Support/raw_ostream.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.
printSymbolTable(Archive * TheArchive)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
main(int argc,char ** argv)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 // Check the path name of the archive
65 sys::Path ArchivePath;
66 if (!ArchivePath.set(ArchiveName)) {
67 errs() << argv[0] << ": " << "Archive name invalid: " << ArchiveName <<
68 "\n";
69 return 1;
70 }
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 errs() << argv[0] << ": " << "Archive file does not exist" <<
76 ArchivePath.str() << "\n";
77 return 1;
78 }
79
80 std::string err_msg;
81 std::auto_ptr<Archive>
82 AutoArchive(Archive::OpenAndLoad(ArchivePath, Context, &err_msg));
83 Archive* TheArchive = AutoArchive.get();
84 if (!TheArchive) {
85 errs() << argv[0] << ": " << err_msg << "\n";
86 return 1;
87 }
88
89 if (TheArchive->writeToDisk(true, false, &err_msg )) {
90 errs() << argv[0] << ": " << err_msg << "\n";
91 return 1;
92 }
93
94 if (Verbose)
95 printSymbolTable(TheArchive);
96
97 return exitCode;
98 }
99