fail(Context + ": " + EC.message());
}
-// Option for compatibility with AIX, not used but must allow it to be present.
-static cl::opt<bool>
-X32Option ("X32_64", cl::Hidden,
- cl::desc("Ignored option for compatibility with AIX"));
-
-// llvm-ar operation code and modifier flags. This must come first.
-static cl::opt<std::string>
-Options(cl::Positional, cl::Required, cl::desc("{operation}[modifiers]..."));
-
-// llvm-ar remaining positional arguments.
+// llvm-ar/llvm-ranlib remaining positional arguments.
static cl::list<std::string>
RestOfArgs(cl::Positional, cl::OneOrMore,
cl::desc("[relpos] [count] <archive-file> [members]..."));
+std::string Options;
+
// MoreHelp - Provide additional help output explaining the operations and
// modifiers of llvm-ar. This object instructs the CommandLine library
// to print the text of the constructor when the --help option is given.
QuickAppend, ///< Quickly append to end of archive
ReplaceOrInsert, ///< Replace or Insert members
DisplayTable, ///< Display the table of contents
- Extract ///< Extract files back to file system
+ Extract, ///< Extract files back to file system
+ CreateSymTab ///< Create a symbol table in an existing archive
};
// Modifiers to follow operation to vary behavior
RestOfArgs.erase(RestOfArgs.begin());
}
+static void getOptions() {
+ if(RestOfArgs.size() == 0)
+ show_help("Expected options");
+ Options = RestOfArgs[0];
+ RestOfArgs.erase(RestOfArgs.begin());
+}
+
// getArchive - Get the archive file name from the command line
static void getArchive() {
if(RestOfArgs.size() == 0)
// operation specified. Process all modifiers and check to make sure that
// constraints on modifier/operation pairs have not been violated.
static ArchiveOperation parseCommandLine() {
+ getOptions();
// Keep track of number of operations. We can only specify one
// per execution.
// Keep track of which operation was requested
ArchiveOperation Operation;
+ bool MaybeJustCreateSymTab = false;
+
for(unsigned i=0; i<Options.size(); ++i) {
switch(Options[i]) {
case 'd': ++NumOperations; Operation = Delete; break;
case 'o': OriginalDates = true; break;
case 's':
Symtab = true;
+ MaybeJustCreateSymTab = true;
break;
case 'S':
Symtab = false;
// Everything on the command line at this point is a member.
getMembers();
+ if (NumOperations == 0 && MaybeJustCreateSymTab) {
+ NumOperations = 1;
+ Operation = CreateSymTab;
+ if (!Members.empty())
+ show_help("The s operation takes only an archive as argument");
+ }
+
// Perform various checks on the operation/modifier specification
// to make sure we are dealing with a legal request.
if (NumOperations == 0)
int FD;
failIfError(
- sys::fs::openFileForWrite(Storage.c_str(), FD, sys::fs::F_Binary, Mode),
+ sys::fs::openFileForWrite(Storage.c_str(), FD, sys::fs::F_None, Mode),
Storage.c_str());
{
case Move:
case DisplayTable:
case Extract:
+ case CreateSymTab:
return false;
case QuickAppend:
static void performReadOperation(ArchiveOperation Operation,
object::Archive *OldArchive) {
- for (object::Archive::child_iterator I = OldArchive->begin_children(),
- E = OldArchive->end_children();
+ for (object::Archive::child_iterator I = OldArchive->child_begin(),
+ E = OldArchive->child_end();
I != E; ++I) {
StringRef Name;
failIfError(I->getName(Name));
class NewArchiveIterator {
bool IsNewMember;
StringRef Name;
+
object::Archive::child_iterator OldI;
+
std::string NewFilename;
+ mutable int NewFD;
+ mutable sys::fs::file_status NewStatus;
public:
NewArchiveIterator(object::Archive::child_iterator I, StringRef Name);
NewArchiveIterator(std::string *I, StringRef Name);
NewArchiveIterator();
bool isNewMember() const;
+ StringRef getName() const;
+
object::Archive::child_iterator getOld() const;
+
const char *getNew() const;
- StringRef getName() const;
+ int getFD() const;
+ const sys::fs::file_status &getStatus() const;
};
}
: IsNewMember(false), Name(Name), OldI(I) {}
NewArchiveIterator::NewArchiveIterator(std::string *NewFilename, StringRef Name)
- : IsNewMember(true), Name(Name), NewFilename(*NewFilename) {}
+ : IsNewMember(true), Name(Name), NewFilename(*NewFilename), NewFD(-1) {}
StringRef NewArchiveIterator::getName() const { return Name; }
return NewFilename.c_str();
}
+int NewArchiveIterator::getFD() const {
+ assert(IsNewMember);
+ if (NewFD != -1)
+ return NewFD;
+ failIfError(sys::fs::openFileForRead(NewFilename, NewFD), NewFilename);
+ assert(NewFD != -1);
+
+ failIfError(sys::fs::status(NewFD, NewStatus), NewFilename);
+
+ // Opening a directory doesn't make sense. Let it fail.
+ // Linux cannot open directories with open(2), although
+ // cygwin and *bsd can.
+ if (NewStatus.type() == sys::fs::file_type::directory_file)
+ failIfError(error_code(errc::is_a_directory, posix_category()),
+ NewFilename);
+
+ return NewFD;
+}
+
+const sys::fs::file_status &NewArchiveIterator::getStatus() const {
+ assert(IsNewMember);
+ assert(NewFD != -1 && "Must call getFD first");
+ return NewStatus;
+}
+
template <typename T>
void addMember(std::vector<NewArchiveIterator> &Members, T I, StringRef Name,
int Pos = -1) {
Members[Pos] = NI;
}
-namespace {
-class HasName {
- StringRef Name;
-
-public:
- HasName(StringRef Name) : Name(Name) {}
- bool operator()(StringRef Path) { return Name == sys::path::filename(Path); }
-};
-}
-
enum InsertAction {
IA_AddOldMember,
IA_AddNewMeber,
if (Operation == QuickAppend || Members.empty())
return IA_AddOldMember;
- std::vector<std::string>::iterator MI =
- std::find_if(Members.begin(), Members.end(), HasName(Name));
+ std::vector<std::string>::iterator MI = std::find_if(
+ Members.begin(), Members.end(),
+ [Name](StringRef Path) { return Name == sys::path::filename(Path); });
if (MI == Members.end())
return IA_AddOldMember;
int InsertPos = -1;
StringRef PosName = sys::path::filename(RelPos);
if (OldArchive) {
- for (object::Archive::child_iterator I = OldArchive->begin_children(),
- E = OldArchive->end_children();
+ for (object::Archive::child_iterator I = OldArchive->child_begin(),
+ E = OldArchive->child_end();
I != E; ++I) {
int Pos = Ret.size();
StringRef Name;
}
template <typename T>
-static void printWithSpacePadding(raw_ostream &OS, T Data, unsigned Size) {
+static void printWithSpacePadding(raw_fd_ostream &OS, T Data, unsigned Size,
+ bool MayTruncate = false) {
uint64_t OldPos = OS.tell();
OS << Data;
unsigned SizeSoFar = OS.tell() - OldPos;
- assert(Size >= SizeSoFar && "Data doesn't fit in Size");
- unsigned Remaining = Size - SizeSoFar;
- for (unsigned I = 0; I < Remaining; ++I)
- OS << ' ';
+ if (Size > SizeSoFar) {
+ unsigned Remaining = Size - SizeSoFar;
+ for (unsigned I = 0; I < Remaining; ++I)
+ OS << ' ';
+ } else if (Size < SizeSoFar) {
+ assert(MayTruncate && "Data doesn't fit in Size");
+ // Some of the data this is used for (like UID) can be larger than the
+ // space available in the archive format. Truncate in that case.
+ OS.seek(OldPos + Size);
+ }
}
static void print32BE(raw_fd_ostream &Out, unsigned Val) {
unsigned GID, unsigned Perms,
unsigned Size) {
printWithSpacePadding(Out, ModTime.toEpochTime(), 12);
- printWithSpacePadding(Out, UID, 6);
- printWithSpacePadding(Out, GID, 6);
+ printWithSpacePadding(Out, UID, 6, true);
+ printWithSpacePadding(Out, GID, 6, true);
printWithSpacePadding(Out, format("%o", Perms), 8);
printWithSpacePadding(Out, Size, 10);
Out << "`\n";
static void writeSymbolTable(
raw_fd_ostream &Out, ArrayRef<NewArchiveIterator> Members,
+ ArrayRef<MemoryBuffer *> Buffers,
std::vector<std::pair<unsigned, unsigned> > &MemberOffsetRefs) {
unsigned StartOffset = 0;
unsigned MemberNum = 0;
- std::vector<StringRef> SymNames;
- std::vector<object::ObjectFile *> DeleteIt;
+ std::string NameBuf;
+ raw_string_ostream NameOS(NameBuf);
+ unsigned NumSyms = 0;
+ std::vector<object::SymbolicFile *> DeleteIt;
+ LLVMContext &Context = getGlobalContext();
for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
E = Members.end();
I != E; ++I, ++MemberNum) {
- object::ObjectFile *Obj;
- if (I->isNewMember()) {
- const char *Filename = I->getNew();
- Obj = object::ObjectFile::createObjectFile(Filename);
- } else {
- object::Archive::child_iterator OldMember = I->getOld();
- OwningPtr<object::Binary> Binary;
- error_code EC = OldMember->getAsBinary(Binary);
- if (EC) { // FIXME: check only for "not an object file" errors.
- Obj = NULL;
- } else {
- Obj = dyn_cast<object::ObjectFile>(Binary.get());
- if (Obj)
- Binary.take();
- }
- }
- if (!Obj)
- continue;
+ MemoryBuffer *MemberBuffer = Buffers[MemberNum];
+ ErrorOr<object::SymbolicFile *> ObjOrErr =
+ object::SymbolicFile::createSymbolicFile(
+ MemberBuffer, false, sys::fs::file_magic::unknown, &Context);
+ if (!ObjOrErr)
+ continue; // FIXME: check only for "not an object file" errors.
+ object::SymbolicFile *Obj = ObjOrErr.get();
+
DeleteIt.push_back(Obj);
if (!StartOffset) {
printMemberHeader(Out, "", sys::TimeValue::now(), 0, 0, 0, 0);
print32BE(Out, 0);
}
- error_code Err;
- for (object::symbol_iterator I = Obj->begin_symbols(),
- E = Obj->end_symbols();
- I != E; I.increment(Err), failIfError(Err)) {
- uint32_t Symflags;
- failIfError(I->getFlags(Symflags));
+ for (object::basic_symbol_iterator I = Obj->symbol_begin(),
+ E = Obj->symbol_end();
+ I != E; ++I) {
+ uint32_t Symflags = I->getFlags();
if (Symflags & object::SymbolRef::SF_FormatSpecific)
continue;
if (!(Symflags & object::SymbolRef::SF_Global))
continue;
if (Symflags & object::SymbolRef::SF_Undefined)
continue;
- StringRef Name;
- failIfError(I->getName(Name));
- SymNames.push_back(Name);
+ failIfError(I->printName(NameOS));
+ NameOS << '\0';
+ ++NumSyms;
MemberOffsetRefs.push_back(std::make_pair(Out.tell(), MemberNum));
print32BE(Out, 0);
}
}
- for (std::vector<StringRef>::iterator I = SymNames.begin(),
- E = SymNames.end();
- I != E; ++I) {
- Out << *I;
- Out << '\0';
- }
+ Out << NameOS.str();
- for (std::vector<object::ObjectFile *>::iterator I = DeleteIt.begin(),
- E = DeleteIt.end();
+ for (std::vector<object::SymbolicFile *>::iterator I = DeleteIt.begin(),
+ E = DeleteIt.end();
I != E; ++I) {
- object::ObjectFile *O = *I;
+ object::SymbolicFile *O = *I;
delete O;
}
Out.seek(StartOffset - 12);
printWithSpacePadding(Out, Pos - StartOffset, 10);
Out.seek(StartOffset);
- print32BE(Out, SymNames.size());
+ print32BE(Out, NumSyms);
Out.seek(Pos);
}
std::vector<std::pair<unsigned, unsigned> > MemberOffsetRefs;
+ std::vector<MemoryBuffer *> MemberBuffers;
+ MemberBuffers.resize(NewMembers.size());
+
+ for (unsigned I = 0, N = NewMembers.size(); I < N; ++I) {
+ OwningPtr<MemoryBuffer> MemberBuffer;
+ NewArchiveIterator &Member = NewMembers[I];
+
+ if (Member.isNewMember()) {
+ const char *Filename = Member.getNew();
+ int FD = Member.getFD();
+ const sys::fs::file_status &Status = Member.getStatus();
+ failIfError(MemoryBuffer::getOpenFile(FD, Filename, MemberBuffer,
+ Status.getSize(), false),
+ Filename);
+
+ } else {
+ object::Archive::child_iterator OldMember = Member.getOld();
+ failIfError(OldMember->getMemoryBuffer(MemberBuffer));
+ }
+ MemberBuffers[I] = MemberBuffer.release();
+ }
+
if (Symtab) {
- writeSymbolTable(Out, NewMembers, MemberOffsetRefs);
+ writeSymbolTable(Out, NewMembers, MemberBuffers, MemberOffsetRefs);
}
std::vector<unsigned> StringMapIndexes;
}
Out.seek(Pos);
+ const MemoryBuffer *File = MemberBuffers[MemberNum];
if (I->isNewMember()) {
const char *FileName = I->getNew();
-
- int FD;
- failIfError(sys::fs::openFileForRead(FileName, FD), FileName);
-
- sys::fs::file_status Status;
- failIfError(sys::fs::status(FD, Status), FileName);
-
- OwningPtr<MemoryBuffer> File;
- failIfError(MemoryBuffer::getOpenFile(FD, FileName, File,
- Status.getSize(), false),
- FileName);
+ const sys::fs::file_status &Status = I->getStatus();
StringRef Name = sys::path::filename(FileName);
if (Name.size() < 16)
Status.getLastModificationTime(), Status.getUser(),
Status.getGroup(), Status.permissions(),
Status.getSize());
- Out << File->getBuffer();
} else {
object::Archive::child_iterator OldMember = I->getOld();
StringRef Name = I->getName();
OldMember->getLastModified(), OldMember->getUID(),
OldMember->getGID(), OldMember->getAccessMode(),
OldMember->getSize());
- Out << OldMember->getBuffer();
}
+ Out << File->getBuffer();
+
if (Out.tell() % 2)
Out << '\n';
}
+
+ for (unsigned I = 0, N = MemberBuffers.size(); I < N; ++I) {
+ delete MemberBuffers[I];
+ }
+
Output.keep();
Out.close();
sys::fs::rename(TemporaryOutput, ArchiveName);
TemporaryOutput = NULL;
}
+static void createSymbolTable(object::Archive *OldArchive) {
+ // When an archive is created or modified, if the s option is given, the
+ // resulting archive will have a current symbol table. If the S option
+ // is given, it will have no symbol table.
+ // In summary, we only need to update the symbol table if we have none.
+ // This is actually very common because of broken build systems that think
+ // they have to run ranlib.
+ if (OldArchive->hasSymbolTable())
+ return;
+
+ performWriteOperation(CreateSymTab, OldArchive);
+}
+
static void performOperation(ArchiveOperation Operation,
object::Archive *OldArchive) {
switch (Operation) {
case ReplaceOrInsert:
performWriteOperation(Operation, OldArchive);
return;
+ case CreateSymTab:
+ createSymbolTable(OldArchive);
+ return;
}
llvm_unreachable("Unknown operation.");
}
+static int ar_main(char **argv);
+static int ranlib_main();
+
// main - main program for llvm-ar .. see comments in the code
int main(int argc, char **argv) {
ToolName = argv[0];
" This program archives bitcode files into single libraries\n"
);
+ StringRef Stem = sys::path::stem(ToolName);
+ if (Stem.find("ar") != StringRef::npos)
+ return ar_main(argv);
+ if (Stem.find("ranlib") != StringRef::npos)
+ return ranlib_main();
+ fail("Not ranlib or ar!");
+}
+
+static int performOperation(ArchiveOperation Operation);
+
+int ranlib_main() {
+ if (RestOfArgs.size() != 1)
+ fail(ToolName + "takes just one archive as argument");
+ ArchiveName = RestOfArgs[0];
+ return performOperation(CreateSymTab);
+}
+
+int ar_main(char **argv) {
// Do our own parsing of the command line because the CommandLine utility
// can't handle the grouped positional parameters without a dash.
ArchiveOperation Operation = parseCommandLine();
+ return performOperation(Operation);
+}
+static int performOperation(ArchiveOperation Operation) {
// Create or open the archive object.
OwningPtr<MemoryBuffer> Buf;
error_code EC = MemoryBuffer::getFile(ArchiveName, Buf, -1, false);
if (EC && EC != llvm::errc::no_such_file_or_directory) {
- errs() << argv[0] << ": error opening '" << ArchiveName
+ errs() << ToolName << ": error opening '" << ArchiveName
<< "': " << EC.message() << "!\n";
return 1;
}
if (!EC) {
- object::Archive Archive(Buf.take(), EC);
+ object::Archive Archive(Buf.release(), EC);
if (EC) {
- errs() << argv[0] << ": error loading '" << ArchiveName
+ errs() << ToolName << ": error loading '" << ArchiveName
<< "': " << EC.message() << "!\n";
return 1;
}
} else {
if (!Create) {
// Produce a warning if we should and we're creating the archive
- errs() << argv[0] << ": creating " << ArchiveName << "\n";
+ errs() << ToolName << ": creating " << ArchiveName << "\n";
}
}
projects / oota-llvm.git / blobdiff