//
//===----------------------------------------------------------------------===//
+#include "llvm/ADT/StringSwitch.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Object/Archive.h"
+#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
+#include "llvm/Support/LineIterator.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstdlib>
-#include <fcntl.h>
#include <memory>
#if !defined(_MSC_VER) && !defined(__MINGW32__)
static StringRef ToolName;
static const char *TemporaryOutput;
+static int TmpArchiveFD = -1;
-// fail - Show the error message and exit.
+// Show the error message and exit.
LLVM_ATTRIBUTE_NORETURN static void fail(Twine Error) {
outs() << ToolName << ": " << Error << ".\n";
+ if (TmpArchiveFD != -1)
+ close(TmpArchiveFD);
if (TemporaryOutput)
sys::fs::remove(TemporaryOutput);
exit(1);
}
-static void failIfError(error_code EC, Twine Context = "") {
+static void failIfError(std::error_code EC, Twine Context = "") {
if (!EC)
return;
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/llvm-ranlib remaining positional arguments.
+static cl::list<std::string>
+ RestOfArgs(cl::Positional, cl::ZeroOrMore,
+ cl::desc("[relpos] [count] <archive-file> [members]..."));
-// 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]..."));
+static cl::opt<bool> MRI("M", cl::desc(""));
-// llvm-ar 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.
+// 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.
static cl::extrahelp MoreHelp(
"\nOPERATIONS:\n"
" d[NsS] - delete file(s) from the archive\n"
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
static bool OriginalDates = false; ///< 'o' modifier
static bool OnlyUpdate = false; ///< 'u' modifier
static bool Verbose = false; ///< 'v' modifier
+static bool Symtab = true; ///< 's' modifier
// Relative Positional Argument (for insert/move). This variable holds
// the name of the archive member to which the 'a', 'b' or 'i' modifier
// This variable holds the list of member files to proecess, as given
// on the command line.
-static std::vector<std::string> Members;
+static std::vector<StringRef> Members;
-// show_help - Show the error message, the help message and exit.
+// Show the error message, the help message and exit.
LLVM_ATTRIBUTE_NORETURN static void
show_help(const std::string &msg) {
errs() << ToolName << ": " << msg << "\n\n";
std::exit(1);
}
-// getRelPos - Extract the member filename from the command line for
-// the [relpos] argument associated with a, b, and i modifiers
+// Extract the member filename from the command line for the [relpos] argument
+// associated with a, b, and i modifiers
static void getRelPos() {
if(RestOfArgs.size() == 0)
show_help("Expected [relpos] for a, b, or i modifier");
RestOfArgs.erase(RestOfArgs.begin());
}
-// getArchive - Get the archive file name from the command line
+static void getOptions() {
+ if(RestOfArgs.size() == 0)
+ show_help("Expected options");
+ Options = RestOfArgs[0];
+ RestOfArgs.erase(RestOfArgs.begin());
+}
+
+// Get the archive file name from the command line
static void getArchive() {
if(RestOfArgs.size() == 0)
show_help("An archive name must be specified");
RestOfArgs.erase(RestOfArgs.begin());
}
-// getMembers - Copy over remaining items in RestOfArgs to our Members vector
-// This is just for clarity.
+// Copy over remaining items in RestOfArgs to our Members vector
static void getMembers() {
- if(RestOfArgs.size() > 0)
- Members = std::vector<std::string>(RestOfArgs);
+ for (auto &Arg : RestOfArgs)
+ Members.push_back(Arg);
+}
+
+namespace {
+enum class MRICommand { AddMod, Create, Save, End, Invalid };
+}
+
+static std::vector<std::string> MRIMembers;
+static ArchiveOperation parseMRIScript() {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getSTDIN();
+ failIfError(Buf.getError());
+ const MemoryBuffer &Ref = *Buf.get();
+ bool Saved = false;
+
+ for (line_iterator I(Ref, /*SkipBlanks*/ true, ';'), E; I != E; ++I) {
+ StringRef Line = *I;
+ StringRef CommandStr, Rest;
+ std::tie(CommandStr, Rest) = Line.split(' ');
+ auto Command = StringSwitch<MRICommand>(CommandStr.lower())
+ .Case("addmod", MRICommand::AddMod)
+ .Case("create", MRICommand::Create)
+ .Case("save", MRICommand::Save)
+ .Case("end", MRICommand::End)
+ .Default(MRICommand::Invalid);
+
+ switch (Command) {
+ case MRICommand::AddMod:
+ MRIMembers.push_back(Rest);
+ break;
+ case MRICommand::Create:
+ Create = true;
+ if (!ArchiveName.empty())
+ fail("Editing multiple archives not supported");
+ if (Saved)
+ fail("File already saved");
+ ArchiveName = Rest;
+ break;
+ case MRICommand::Save:
+ Saved = true;
+ break;
+ case MRICommand::End:
+ break;
+ case MRICommand::Invalid:
+ fail("Unknown command: " + CommandStr);
+ }
+ }
+
+ // Nothing to do if not saved.
+ if (!Saved)
+ exit(0);
+
+ for (auto &M : MRIMembers)
+ Members.push_back(M);
+
+ return ReplaceOrInsert;
}
-// parseCommandLine - Parse the command line options as presented and return the
-// operation specified. Process all modifiers and check to make sure that
-// constraints on modifier/operation pairs have not been violated.
+// Parse the command line options as presented and return the operation
+// specified. Process all modifiers and check to make sure that constraints on
+// modifier/operation pairs have not been violated.
static ArchiveOperation parseCommandLine() {
+ if (MRI) {
+ if (!RestOfArgs.empty())
+ fail("Cannot mix -M and other options");
+ return parseMRIScript();
+ }
+
+ 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 'c': Create = true; break;
case 'l': /* accepted but unused */ break;
case 'o': OriginalDates = true; break;
- case 's': break; // Ignore for now.
- case 'S': break; // Ignore for now.
+ case 's':
+ Symtab = true;
+ MaybeJustCreateSymTab = true;
+ break;
+ case 'S':
+ Symtab = false;
+ break;
case 'u': OnlyUpdate = true; break;
case 'v': Verbose = true; break;
case 'a':
// 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)
outs().write(Data.data(), Data.size());
}
-// putMode - utility function for printing out the file mode when the 't'
-// operation is in verbose mode.
+// Utility function for printing out the file mode when the 't' operation is in
+// verbose mode.
static void printMode(unsigned mode) {
if (mode & 004)
outs() << "r";
// Implement the 'x' operation. This function extracts files back to the file
// system.
static void doExtract(StringRef Name, object::Archive::child_iterator I) {
- // Open up a file stream for writing
- // FIXME: we should abstract this, O_BINARY in particular.
- int OpenFlags = O_TRUNC | O_WRONLY | O_CREAT;
-#ifdef O_BINARY
- OpenFlags |= O_BINARY;
-#endif
-
// Retain the original mode.
sys::fs::perms Mode = I->getAccessMode();
+ SmallString<128> Storage = Name;
- int FD = open(Name.str().c_str(), OpenFlags, Mode);
- if (FD < 0)
- fail("Could not open output file");
+ int FD;
+ failIfError(
+ sys::fs::openFileForWrite(Storage.c_str(), FD, sys::fs::F_None, Mode),
+ Storage.c_str());
{
raw_fd_ostream file(FD, false);
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));
+ ErrorOr<StringRef> NameOrErr = I->getName();
+ failIfError(NameOrErr.getError());
+ StringRef Name = NameOrErr.get();
if (!Members.empty() &&
std::find(Members.begin(), Members.end(), Name) == Members.end())
namespace {
class NewArchiveIterator {
bool IsNewMember;
- SmallString<16> MemberName;
+ StringRef Name;
+
object::Archive::child_iterator OldI;
- std::vector<std::string>::const_iterator NewI;
+
+ StringRef NewFilename;
+ mutable int NewFD;
+ mutable sys::fs::file_status NewStatus;
public:
- NewArchiveIterator(object::Archive::child_iterator I, Twine Name);
- NewArchiveIterator(std::vector<std::string>::const_iterator I, Twine Name);
+ NewArchiveIterator(object::Archive::child_iterator I, StringRef Name);
+ NewArchiveIterator(StringRef I, StringRef Name);
+ NewArchiveIterator();
bool isNewMember() const;
+ StringRef getName() const;
+
object::Archive::child_iterator getOld() const;
+
StringRef getNew() const;
- StringRef getMemberName() const { return MemberName; }
+ int getFD() const;
+ const sys::fs::file_status &getStatus() const;
};
}
+NewArchiveIterator::NewArchiveIterator() {}
+
NewArchiveIterator::NewArchiveIterator(object::Archive::child_iterator I,
- Twine Name)
- : IsNewMember(false), OldI(I) {
- Name.toVector(MemberName);
-}
+ StringRef Name)
+ : IsNewMember(false), Name(Name), OldI(I) {}
-NewArchiveIterator::NewArchiveIterator(
- std::vector<std::string>::const_iterator I, Twine Name)
- : IsNewMember(true), NewI(I) {
- Name.toVector(MemberName);
-}
+NewArchiveIterator::NewArchiveIterator(StringRef NewFilename, StringRef Name)
+ : IsNewMember(true), Name(Name), NewFilename(NewFilename), NewFD(-1) {}
+
+StringRef NewArchiveIterator::getName() const { return Name; }
bool NewArchiveIterator::isNewMember() const { return IsNewMember; }
StringRef NewArchiveIterator::getNew() const {
assert(IsNewMember);
- return *NewI;
+ return NewFilename;
+}
+
+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(make_error_code(errc::is_a_directory), 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,
- std::string &StringTable, T I, StringRef Name) {
- if (Name.size() < 16) {
- NewArchiveIterator NI(I, Twine(Name) + "/");
- Members.push_back(NI);
- } else {
- int MapIndex = StringTable.size();
- NewArchiveIterator NI(I, Twine("/") + Twine(MapIndex));
+void addMember(std::vector<NewArchiveIterator> &Members, T I, StringRef Name,
+ int Pos = -1) {
+ NewArchiveIterator NI(I, Name);
+ if (Pos == -1)
Members.push_back(NI);
- StringTable += Name;
- StringTable += "/\n";
- }
+ else
+ 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,
+ IA_Delete,
+ IA_MoveOldMember,
+ IA_MoveNewMember
};
+
+static InsertAction computeInsertAction(ArchiveOperation Operation,
+ object::Archive::child_iterator I,
+ StringRef Name,
+ std::vector<StringRef>::iterator &Pos) {
+ if (Operation == QuickAppend || Members.empty())
+ return IA_AddOldMember;
+
+ auto MI =
+ std::find_if(Members.begin(), Members.end(), [Name](StringRef Path) {
+ return Name == sys::path::filename(Path);
+ });
+
+ if (MI == Members.end())
+ return IA_AddOldMember;
+
+ Pos = MI;
+
+ if (Operation == Delete)
+ return IA_Delete;
+
+ if (Operation == Move)
+ return IA_MoveOldMember;
+
+ if (Operation == ReplaceOrInsert) {
+ StringRef PosName = sys::path::filename(RelPos);
+ if (!OnlyUpdate) {
+ if (PosName.empty())
+ return IA_AddNewMeber;
+ return IA_MoveNewMember;
+ }
+
+ // We could try to optimize this to a fstat, but it is not a common
+ // operation.
+ sys::fs::file_status Status;
+ failIfError(sys::fs::status(*MI, Status), *MI);
+ if (Status.getLastModificationTime() < I->getLastModified()) {
+ if (PosName.empty())
+ return IA_AddOldMember;
+ return IA_MoveOldMember;
+ }
+
+ if (PosName.empty())
+ return IA_AddNewMeber;
+ return IA_MoveNewMember;
+ }
+ llvm_unreachable("No such operation");
}
// We have to walk this twice and computing it is not trivial, so creating an
// explicit std::vector is actually fairly efficient.
static std::vector<NewArchiveIterator>
computeNewArchiveMembers(ArchiveOperation Operation,
- object::Archive *OldArchive,
- std::string &StringTable) {
+ object::Archive *OldArchive) {
std::vector<NewArchiveIterator> Ret;
std::vector<NewArchiveIterator> Moved;
int InsertPos = -1;
StringRef PosName = sys::path::filename(RelPos);
if (OldArchive) {
- int Pos = 0;
- for (object::Archive::child_iterator I = OldArchive->begin_children(),
- E = OldArchive->end_children();
- I != E; ++I, ++Pos) {
- StringRef Name;
- failIfError(I->getName(Name));
+ for (object::Archive::child_iterator I = OldArchive->child_begin(),
+ E = OldArchive->child_end();
+ I != E; ++I) {
+ int Pos = Ret.size();
+ ErrorOr<StringRef> NameOrErr = I->getName();
+ failIfError(NameOrErr.getError());
+ StringRef Name = NameOrErr.get();
if (Name == PosName) {
assert(AddAfter || AddBefore);
if (AddBefore)
else
InsertPos = Pos + 1;
}
- if (Operation != QuickAppend && !Members.empty()) {
- std::vector<std::string>::iterator MI =
- std::find_if(Members.begin(), Members.end(), HasName(Name));
- if (MI != Members.end()) {
- if (Operation == Move) {
- addMember(Moved, StringTable, I, Name);
- continue;
- }
- if (Operation != ReplaceOrInsert || !OnlyUpdate)
- continue;
- // Ignore if the file if it is older than the member.
- sys::fs::file_status Status;
- failIfError(sys::fs::status(*MI, Status));
- if (Status.getLastModificationTime() < I->getLastModified())
- Members.erase(MI);
- else
- continue;
- }
+
+ std::vector<StringRef>::iterator MemberI = Members.end();
+ InsertAction Action = computeInsertAction(Operation, I, Name, MemberI);
+ switch (Action) {
+ case IA_AddOldMember:
+ addMember(Ret, I, Name);
+ break;
+ case IA_AddNewMeber:
+ addMember(Ret, *MemberI, Name);
+ break;
+ case IA_Delete:
+ break;
+ case IA_MoveOldMember:
+ addMember(Moved, I, Name);
+ break;
+ case IA_MoveNewMember:
+ addMember(Moved, *MemberI, Name);
+ break;
}
- addMember(Ret, StringTable, I, Name);
+ if (MemberI != Members.end())
+ Members.erase(MemberI);
}
}
if (Operation == Delete)
return Ret;
- if (Operation == Move) {
- if (RelPos.empty()) {
- Ret.insert(Ret.end(), Moved.begin(), Moved.end());
- return Ret;
- }
- if (InsertPos == -1)
- fail("Insertion point not found");
- assert(unsigned(InsertPos) <= Ret.size());
- Ret.insert(Ret.begin() + InsertPos, Moved.begin(), Moved.end());
- return Ret;
- }
+ if (!RelPos.empty() && InsertPos == -1)
+ fail("Insertion point not found");
- for (std::vector<std::string>::iterator I = Members.begin(),
- E = Members.end();
- I != E; ++I) {
- StringRef Name = sys::path::filename(*I);
- addMember(Ret, StringTable, I, Name);
+ if (RelPos.empty())
+ InsertPos = Ret.size();
+
+ assert(unsigned(InsertPos) <= Ret.size());
+ Ret.insert(Ret.begin() + InsertPos, Moved.begin(), Moved.end());
+
+ Ret.insert(Ret.begin() + InsertPos, Members.size(), NewArchiveIterator());
+ int Pos = InsertPos;
+ for (auto &Member : Members) {
+ StringRef Name = sys::path::filename(Member);
+ addMember(Ret, Member, Name, Pos);
+ ++Pos;
}
return Ret;
}
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) {
+ for (int I = 3; I >= 0; --I) {
+ char V = (Val >> (8 * I)) & 0xff;
+ Out << V;
+ }
+}
+
+static void printRestOfMemberHeader(raw_fd_ostream &Out,
+ const sys::TimeValue &ModTime, unsigned UID,
+ unsigned GID, unsigned Perms,
+ unsigned Size) {
+ printWithSpacePadding(Out, ModTime.toEpochTime(), 12);
+ printWithSpacePadding(Out, UID, 6, true);
+ printWithSpacePadding(Out, GID, 6, true);
+ printWithSpacePadding(Out, format("%o", Perms), 8);
+ printWithSpacePadding(Out, Size, 10);
+ Out << "`\n";
+}
+
+static void printMemberHeader(raw_fd_ostream &Out, StringRef Name,
+ const sys::TimeValue &ModTime, unsigned UID,
+ unsigned GID, unsigned Perms, unsigned Size) {
+ printWithSpacePadding(Out, Twine(Name) + "/", 16);
+ printRestOfMemberHeader(Out, ModTime, UID, GID, Perms, Size);
+}
+
+static void printMemberHeader(raw_fd_ostream &Out, unsigned NameOffset,
+ const sys::TimeValue &ModTime, unsigned UID,
+ unsigned GID, unsigned Perms, unsigned Size) {
+ Out << '/';
+ printWithSpacePadding(Out, NameOffset, 15);
+ printRestOfMemberHeader(Out, ModTime, UID, GID, Perms, Size);
+}
+
+static void writeStringTable(raw_fd_ostream &Out,
+ ArrayRef<NewArchiveIterator> Members,
+ std::vector<unsigned> &StringMapIndexes) {
+ unsigned StartOffset = 0;
+ for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
+ E = Members.end();
+ I != E; ++I) {
+ StringRef Name = I->getName();
+ if (Name.size() < 16)
+ continue;
+ if (StartOffset == 0) {
+ printWithSpacePadding(Out, "//", 58);
+ Out << "`\n";
+ StartOffset = Out.tell();
+ }
+ StringMapIndexes.push_back(Out.tell() - StartOffset);
+ Out << Name << "/\n";
+ }
+ if (StartOffset == 0)
+ return;
+ if (Out.tell() % 2)
+ Out << '\n';
+ int Pos = Out.tell();
+ Out.seek(StartOffset - 12);
+ printWithSpacePadding(Out, Pos - StartOffset, 10);
+ Out.seek(Pos);
+}
+
+static void
+writeSymbolTable(raw_fd_ostream &Out, ArrayRef<NewArchiveIterator> Members,
+ ArrayRef<MemoryBufferRef> Buffers,
+ std::vector<std::pair<unsigned, unsigned>> &MemberOffsetRefs) {
+ unsigned StartOffset = 0;
+ unsigned MemberNum = 0;
+ std::string NameBuf;
+ raw_string_ostream NameOS(NameBuf);
+ unsigned NumSyms = 0;
+ LLVMContext &Context = getGlobalContext();
+ for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
+ E = Members.end();
+ I != E; ++I, ++MemberNum) {
+ MemoryBufferRef MemberBuffer = Buffers[MemberNum];
+ ErrorOr<std::unique_ptr<object::SymbolicFile>> ObjOrErr =
+ object::SymbolicFile::createSymbolicFile(
+ MemberBuffer, sys::fs::file_magic::unknown, &Context);
+ if (!ObjOrErr)
+ continue; // FIXME: check only for "not an object file" errors.
+ object::SymbolicFile &Obj = *ObjOrErr.get();
+
+ if (!StartOffset) {
+ printMemberHeader(Out, "", sys::TimeValue::now(), 0, 0, 0, 0);
+ StartOffset = Out.tell();
+ print32BE(Out, 0);
+ }
+
+ for (const object::BasicSymbolRef &S : Obj.symbols()) {
+ uint32_t Symflags = S.getFlags();
+ if (Symflags & object::SymbolRef::SF_FormatSpecific)
+ continue;
+ if (!(Symflags & object::SymbolRef::SF_Global))
+ continue;
+ if (Symflags & object::SymbolRef::SF_Undefined)
+ continue;
+ failIfError(S.printName(NameOS));
+ NameOS << '\0';
+ ++NumSyms;
+ MemberOffsetRefs.push_back(std::make_pair(Out.tell(), MemberNum));
+ print32BE(Out, 0);
+ }
+ }
+ Out << NameOS.str();
+
+ if (StartOffset == 0)
+ return;
+
+ if (Out.tell() % 2)
+ Out << '\0';
+
+ unsigned Pos = Out.tell();
+ Out.seek(StartOffset - 12);
+ printWithSpacePadding(Out, Pos - StartOffset, 10);
+ Out.seek(StartOffset);
+ print32BE(Out, NumSyms);
+ Out.seek(Pos);
}
static void performWriteOperation(ArchiveOperation Operation,
object::Archive *OldArchive) {
- int TmpArchiveFD;
SmallString<128> TmpArchive;
failIfError(sys::fs::createUniqueFile(ArchiveName + ".temp-archive-%%%%%%%.a",
TmpArchiveFD, TmpArchive));
raw_fd_ostream &Out = Output.os();
Out << "!<arch>\n";
- std::string StringTable;
std::vector<NewArchiveIterator> NewMembers =
- computeNewArchiveMembers(Operation, OldArchive, StringTable);
- if (!StringTable.empty()) {
- if (StringTable.size() % 2)
- StringTable += '\n';
- printWithSpacePadding(Out, "//", 48);
- printWithSpacePadding(Out, StringTable.size(), 10);
- Out << "`\n";
- Out << StringTable;
+ computeNewArchiveMembers(Operation, OldArchive);
+
+ std::vector<std::pair<unsigned, unsigned> > MemberOffsetRefs;
+
+ std::vector<std::unique_ptr<MemoryBuffer>> Buffers;
+ std::vector<MemoryBufferRef> Members;
+
+ for (unsigned I = 0, N = NewMembers.size(); I < N; ++I) {
+ NewArchiveIterator &Member = NewMembers[I];
+ MemoryBufferRef MemberRef;
+
+ if (Member.isNewMember()) {
+ StringRef Filename = Member.getNew();
+ int FD = Member.getFD();
+ const sys::fs::file_status &Status = Member.getStatus();
+ ErrorOr<std::unique_ptr<MemoryBuffer>> MemberBufferOrErr =
+ MemoryBuffer::getOpenFile(FD, Filename, Status.getSize(), false);
+ failIfError(MemberBufferOrErr.getError(), Filename);
+ Buffers.push_back(std::move(MemberBufferOrErr.get()));
+ MemberRef = Buffers.back()->getMemBufferRef();
+ } else {
+ object::Archive::child_iterator OldMember = Member.getOld();
+ ErrorOr<MemoryBufferRef> MemberBufferOrErr =
+ OldMember->getMemoryBufferRef();
+ failIfError(MemberBufferOrErr.getError());
+ MemberRef = MemberBufferOrErr.get();
+ }
+ Members.push_back(MemberRef);
+ }
+
+ if (Symtab) {
+ writeSymbolTable(Out, NewMembers, Members, MemberOffsetRefs);
}
+ std::vector<unsigned> StringMapIndexes;
+ writeStringTable(Out, NewMembers, StringMapIndexes);
+
+ std::vector<std::pair<unsigned, unsigned> >::iterator MemberRefsI =
+ MemberOffsetRefs.begin();
+
+ unsigned MemberNum = 0;
+ unsigned LongNameMemberNum = 0;
for (std::vector<NewArchiveIterator>::iterator I = NewMembers.begin(),
E = NewMembers.end();
- I != E; ++I) {
- StringRef Name = I->getMemberName();
- printWithSpacePadding(Out, Name, 16);
+ I != E; ++I, ++MemberNum) {
+
+ unsigned Pos = Out.tell();
+ while (MemberRefsI != MemberOffsetRefs.end() &&
+ MemberRefsI->second == MemberNum) {
+ Out.seek(MemberRefsI->first);
+ print32BE(Out, Pos);
+ ++MemberRefsI;
+ }
+ Out.seek(Pos);
+ MemoryBufferRef File = Members[MemberNum];
if (I->isNewMember()) {
- // FIXME: we do a stat + open. We should do a open + fstat.
StringRef FileName = I->getNew();
- sys::fs::file_status Status;
- failIfError(sys::fs::status(FileName, Status), FileName);
-
- uint64_t secondsSinceEpoch =
- Status.getLastModificationTime().toEpochTime();
- printWithSpacePadding(Out, secondsSinceEpoch, 12);
-
- printWithSpacePadding(Out, Status.getUser(), 6);
- printWithSpacePadding(Out, Status.getGroup(), 6);
- printWithSpacePadding(Out, format("%o", Status.permissions()), 8);
- printWithSpacePadding(Out, Status.getSize(), 10);
- Out << "`\n";
-
- OwningPtr<MemoryBuffer> File;
- failIfError(MemoryBuffer::getFile(FileName, File), FileName);
- Out << File->getBuffer();
+ const sys::fs::file_status &Status = I->getStatus();
+
+ StringRef Name = sys::path::filename(FileName);
+ if (Name.size() < 16)
+ printMemberHeader(Out, Name, Status.getLastModificationTime(),
+ Status.getUser(), Status.getGroup(),
+ Status.permissions(), Status.getSize());
+ else
+ printMemberHeader(Out, StringMapIndexes[LongNameMemberNum++],
+ Status.getLastModificationTime(), Status.getUser(),
+ Status.getGroup(), Status.permissions(),
+ Status.getSize());
} else {
object::Archive::child_iterator OldMember = I->getOld();
-
- uint64_t secondsSinceEpoch = OldMember->getLastModified().toEpochTime();
- printWithSpacePadding(Out, secondsSinceEpoch, 12);
-
- printWithSpacePadding(Out, OldMember->getUID(), 6);
- printWithSpacePadding(Out, OldMember->getGID(), 6);
- printWithSpacePadding(Out, format("%o", OldMember->getAccessMode()), 8);
- printWithSpacePadding(Out, OldMember->getSize(), 10);
- Out << "`\n";
-
- Out << OldMember->getBuffer();
+ StringRef Name = I->getName();
+
+ if (Name.size() < 16)
+ printMemberHeader(Out, Name, OldMember->getLastModified(),
+ OldMember->getUID(), OldMember->getGID(),
+ OldMember->getAccessMode(), OldMember->getSize());
+ else
+ printMemberHeader(Out, StringMapIndexes[LongNameMemberNum++],
+ OldMember->getLastModified(), OldMember->getUID(),
+ OldMember->getGID(), OldMember->getAccessMode(),
+ OldMember->getSize());
}
+ Out << File.getBuffer();
+
if (Out.tell() % 2)
Out << '\n';
}
+
Output.keep();
Out.close();
sys::fs::rename(TemporaryOutput, ArchiveName);
- TemporaryOutput = NULL;
+ TemporaryOutput = nullptr;
+}
+
+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,
case ReplaceOrInsert:
performWriteOperation(Operation, OldArchive);
return;
+ case CreateSymTab:
+ createSymbolTable(OldArchive);
+ return;
}
llvm_unreachable("Unknown operation.");
}
-// main - main program for llvm-ar .. see comments in the code
-int main(int argc, char **argv) {
- ToolName = argv[0];
- // Print a stack trace if we signal out.
- sys::PrintStackTraceOnErrorSignal();
- PrettyStackTraceProgram X(argc, argv);
- llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
-
- // Have the command line options parsed and handle things
- // like --help and --version.
- cl::ParseCommandLineOptions(argc, argv,
- "LLVM Archiver (llvm-ar)\n\n"
- " This program archives bitcode files into single libraries\n"
- );
-
- // 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();
-
+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
+ ErrorOr<std::unique_ptr<MemoryBuffer>> Buf =
+ MemoryBuffer::getFile(ArchiveName, -1, false);
+ std::error_code EC = Buf.getError();
+ if (EC && EC != errc::no_such_file_or_directory) {
+ errs() << ToolName << ": error opening '" << ArchiveName
<< "': " << EC.message() << "!\n";
return 1;
}
if (!EC) {
- object::Archive Archive(Buf.take(), EC);
+ object::Archive Archive(Buf.get()->getMemBufferRef(), EC);
if (EC) {
- errs() << argv[0] << ": error loading '" << ArchiveName
+ errs() << ToolName << ": error loading '" << ArchiveName
<< "': " << EC.message() << "!\n";
return 1;
}
return 0;
}
- assert(EC == llvm::errc::no_such_file_or_directory);
+ assert(EC == errc::no_such_file_or_directory);
if (!shouldCreateArchive(Operation)) {
failIfError(EC, Twine("error loading '") + ArchiveName + "'");
} 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";
}
}
- performOperation(Operation, NULL);
+ performOperation(Operation, nullptr);
return 0;
}
+
+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);
+}
+
+int ranlib_main() {
+ if (RestOfArgs.size() != 1)
+ fail(ToolName + "takes just one archive as argument");
+ ArchiveName = RestOfArgs[0];
+ return performOperation(CreateSymTab);
+}
+
+int main(int argc, char **argv) {
+ ToolName = argv[0];
+ // Print a stack trace if we signal out.
+ sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+
+ // Have the command line options parsed and handle things
+ // like --help and --version.
+ cl::ParseCommandLineOptions(argc, argv,
+ "LLVM Archiver (llvm-ar)\n\n"
+ " This program archives bitcode files into single libraries\n"
+ );
+
+ llvm::InitializeAllTargetInfos();
+ llvm::InitializeAllTargetMCs();
+ llvm::InitializeAllAsmParsers();
+
+ 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!");
+}
projects / oota-llvm.git / blobdiff