#include "llvm/Object/Archive.h"
#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
using namespace llvm;
using namespace object;
+using namespace llvm::support::endian;
-static const char *Magic = "!<arch>\n";
-
-namespace {
-struct ArchiveMemberHeader {
- char Name[16];
- char LastModified[12];
- char UID[6];
- char GID[6];
- char AccessMode[8];
- char Size[10]; ///< Size of data, not including header or padding.
- char Terminator[2];
-
- ///! Get the name without looking up long names.
- StringRef getName() const {
- char EndCond;
- if (Name[0] == '/' || Name[0] == '#')
- EndCond = ' ';
- else
- EndCond = '/';
- StringRef::size_type end = StringRef(Name, sizeof(Name)).find(EndCond);
- if (end == StringRef::npos)
- end = sizeof(Name);
- assert(end <= sizeof(Name) && end > 0);
- // Don't include the EndCond if there is one.
- return StringRef(Name, end);
- }
+static const char *const Magic = "!<arch>\n";
+static const char *const ThinMagic = "!<thin>\n";
- uint64_t getSize() const {
- APInt ret;
- StringRef(Size, sizeof(Size)).getAsInteger(10, ret);
- return ret.getZExtValue();
- }
-};
+void Archive::anchor() { }
+
+StringRef ArchiveMemberHeader::getName() const {
+ char EndCond;
+ if (Name[0] == '/' || Name[0] == '#')
+ EndCond = ' ';
+ else
+ EndCond = '/';
+ llvm::StringRef::size_type end =
+ llvm::StringRef(Name, sizeof(Name)).find(EndCond);
+ if (end == llvm::StringRef::npos)
+ end = sizeof(Name);
+ assert(end <= sizeof(Name) && end > 0);
+ // Don't include the EndCond if there is one.
+ return llvm::StringRef(Name, end);
+}
+
+uint32_t ArchiveMemberHeader::getSize() const {
+ uint32_t Ret;
+ if (llvm::StringRef(Size, sizeof(Size)).rtrim(" ").getAsInteger(10, Ret))
+ llvm_unreachable("Size is not a decimal number.");
+ return Ret;
+}
+
+sys::fs::perms ArchiveMemberHeader::getAccessMode() const {
+ unsigned Ret;
+ if (StringRef(AccessMode, sizeof(AccessMode)).rtrim(" ").getAsInteger(8, Ret))
+ llvm_unreachable("Access mode is not an octal number.");
+ return static_cast<sys::fs::perms>(Ret);
}
-static const ArchiveMemberHeader *ToHeader(const char *base) {
- return reinterpret_cast<const ArchiveMemberHeader *>(base);
+sys::TimeValue ArchiveMemberHeader::getLastModified() const {
+ unsigned Seconds;
+ if (StringRef(LastModified, sizeof(LastModified)).rtrim(" ")
+ .getAsInteger(10, Seconds))
+ llvm_unreachable("Last modified time not a decimal number.");
+
+ sys::TimeValue Ret;
+ Ret.fromEpochTime(Seconds);
+ return Ret;
}
+unsigned ArchiveMemberHeader::getUID() const {
+ unsigned Ret;
+ if (StringRef(UID, sizeof(UID)).rtrim(" ").getAsInteger(10, Ret))
+ llvm_unreachable("UID time not a decimal number.");
+ return Ret;
+}
-static bool isInternalMember(const ArchiveMemberHeader &amh) {
- static const char *const internals[] = {
- "/",
- "//",
- "#_LLVM_SYM_TAB_#"
- };
+unsigned ArchiveMemberHeader::getGID() const {
+ unsigned Ret;
+ if (StringRef(GID, sizeof(GID)).rtrim(" ").getAsInteger(10, Ret))
+ llvm_unreachable("GID time not a decimal number.");
+ return Ret;
+}
- StringRef name = amh.getName();
- for (std::size_t i = 0; i < sizeof(internals) / sizeof(*internals); ++i) {
- if (name == internals[i])
- return true;
+Archive::Child::Child(const Archive *Parent, const char *Start)
+ : Parent(Parent) {
+ if (!Start)
+ return;
+
+ uint64_t Size = sizeof(ArchiveMemberHeader);
+ Data = StringRef(Start, Size);
+ if (!isThinMember()) {
+ Size += getRawSize();
+ Data = StringRef(Start, Size);
+ }
+
+ // Setup StartOfFile and PaddingBytes.
+ StartOfFile = sizeof(ArchiveMemberHeader);
+ // Don't include attached name.
+ StringRef Name = getRawName();
+ if (Name.startswith("#1/")) {
+ uint64_t NameSize;
+ if (Name.substr(3).rtrim(" ").getAsInteger(10, NameSize))
+ llvm_unreachable("Long name length is not an integer");
+ StartOfFile += NameSize;
}
- return false;
}
-void Archive::anchor() { }
+uint64_t Archive::Child::getSize() const {
+ if (Parent->IsThin)
+ return getHeader()->getSize();
+ return Data.size() - StartOfFile;
+}
+
+uint64_t Archive::Child::getRawSize() const {
+ return getHeader()->getSize();
+}
+
+bool Archive::Child::isThinMember() const {
+ StringRef Name = getHeader()->getName();
+ return Parent->IsThin && Name != "/" && Name != "//";
+}
+
+ErrorOr<StringRef> Archive::Child::getBuffer() const {
+ if (!isThinMember())
+ return StringRef(Data.data() + StartOfFile, getSize());
+ ErrorOr<StringRef> Name = getName();
+ if (std::error_code EC = Name.getError())
+ return EC;
+ SmallString<128> FullName = sys::path::parent_path(
+ Parent->getMemoryBufferRef().getBufferIdentifier());
+ sys::path::append(FullName, *Name);
+ ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getFile(FullName);
+ if (std::error_code EC = Buf.getError())
+ return EC;
+ Parent->ThinBuffers.push_back(std::move(*Buf));
+ return Parent->ThinBuffers.back()->getBuffer();
+}
Archive::Child Archive::Child::getNext() const {
- size_t SpaceToSkip = sizeof(ArchiveMemberHeader) +
- ToHeader(Data.data())->getSize();
+ size_t SpaceToSkip = Data.size();
// If it's odd, add 1 to make it even.
if (SpaceToSkip & 1)
++SpaceToSkip;
const char *NextLoc = Data.data() + SpaceToSkip;
// Check to see if this is past the end of the archive.
- if (NextLoc >= Parent->Data->getBufferEnd())
- return Child(Parent, StringRef(0, 0));
+ if (NextLoc >= Parent->Data.getBufferEnd())
+ return Child(Parent, nullptr);
- size_t NextSize = sizeof(ArchiveMemberHeader) +
- ToHeader(NextLoc)->getSize();
+ return Child(Parent, NextLoc);
+}
- return Child(Parent, StringRef(NextLoc, NextSize));
+uint64_t Archive::Child::getChildOffset() const {
+ const char *a = Parent->Data.getBuffer().data();
+ const char *c = Data.data();
+ uint64_t offset = c - a;
+ return offset;
}
-error_code Archive::Child::getName(StringRef &Result) const {
- StringRef name = ToHeader(Data.data())->getName();
+ErrorOr<StringRef> Archive::Child::getName() const {
+ StringRef name = getRawName();
// Check if it's a special name.
if (name[0] == '/') {
- if (name.size() == 1) { // Linker member.
- Result = name;
- return object_error::success;
- }
- if (name.size() == 2 && name[1] == '/') { // String table.
- Result = name;
- return object_error::success;
- }
+ if (name.size() == 1) // Linker member.
+ return name;
+ if (name.size() == 2 && name[1] == '/') // String table.
+ return name;
// It's a long name.
// Get the offset.
- APInt offset;
- name.substr(1).getAsInteger(10, offset);
+ std::size_t offset;
+ if (name.substr(1).rtrim(" ").getAsInteger(10, offset))
+ llvm_unreachable("Long name offset is not an integer");
const char *addr = Parent->StringTable->Data.begin()
+ sizeof(ArchiveMemberHeader)
- + offset.getZExtValue();
+ + offset;
// Verify it.
- if (Parent->StringTable == Parent->end_children()
+ if (Parent->StringTable == Parent->child_end()
|| addr < (Parent->StringTable->Data.begin()
+ sizeof(ArchiveMemberHeader))
|| addr > (Parent->StringTable->Data.begin()
+ Parent->StringTable->getSize()))
return object_error::parse_failed;
- // GNU long file names end with a /.
- if (Parent->kind() == K_GNU) {
- StringRef::size_type End = StringRef(addr).find('/');
- Result = StringRef(addr, End);
- } else {
- Result = addr;
+ // GNU long file names end with a "/\n".
+ if (Parent->kind() == K_GNU || Parent->kind() == K_MIPS64) {
+ StringRef::size_type End = StringRef(addr).find('\n');
+ return StringRef(addr, End - 1);
}
- return object_error::success;
+ return StringRef(addr);
} else if (name.startswith("#1/")) {
- APInt name_size;
- name.substr(3).getAsInteger(10, name_size);
- Result = Data.substr(0, name_size.getZExtValue());
- return object_error::success;
+ uint64_t name_size;
+ if (name.substr(3).rtrim(" ").getAsInteger(10, name_size))
+ llvm_unreachable("Long name length is not an ingeter");
+ return Data.substr(sizeof(ArchiveMemberHeader), name_size)
+ .rtrim(StringRef("\0", 1));
}
// It's a simple name.
if (name[name.size() - 1] == '/')
- Result = name.substr(0, name.size() - 1);
- else
- Result = name;
- return object_error::success;
+ return name.substr(0, name.size() - 1);
+ return name;
}
-uint64_t Archive::Child::getSize() const {
- uint64_t size = ToHeader(Data.data())->getSize();
- // Don't include attached name.
- StringRef name = ToHeader(Data.data())->getName();
- if (name.startswith("#1/")) {
- APInt name_size;
- name.substr(3).getAsInteger(10, name_size);
- size -= name_size.getZExtValue();
- }
- return size;
+ErrorOr<MemoryBufferRef> Archive::Child::getMemoryBufferRef() const {
+ ErrorOr<StringRef> NameOrErr = getName();
+ if (std::error_code EC = NameOrErr.getError())
+ return EC;
+ StringRef Name = NameOrErr.get();
+ ErrorOr<StringRef> Buf = getBuffer();
+ if (std::error_code EC = Buf.getError())
+ return EC;
+ return MemoryBufferRef(*Buf, Name);
}
-MemoryBuffer *Archive::Child::getBuffer() const {
- StringRef name;
- if (getName(name)) return NULL;
- int size = sizeof(ArchiveMemberHeader);
- if (name.startswith("#1/")) {
- APInt name_size;
- name.substr(3).getAsInteger(10, name_size);
- size += name_size.getZExtValue();
- }
- return MemoryBuffer::getMemBuffer(Data.substr(size, getSize()),
- name,
- false);
+ErrorOr<std::unique_ptr<Binary>>
+Archive::Child::getAsBinary(LLVMContext *Context) const {
+ ErrorOr<MemoryBufferRef> BuffOrErr = getMemoryBufferRef();
+ if (std::error_code EC = BuffOrErr.getError())
+ return EC;
+
+ return createBinary(BuffOrErr.get(), Context);
}
-error_code Archive::Child::getAsBinary(OwningPtr<Binary> &Result) const {
- OwningPtr<Binary> ret;
- if (error_code ec =
- createBinary(getBuffer(), ret))
- return ec;
- Result.swap(ret);
- return object_error::success;
+ErrorOr<std::unique_ptr<Archive>> Archive::create(MemoryBufferRef Source) {
+ std::error_code EC;
+ std::unique_ptr<Archive> Ret(new Archive(Source, EC));
+ if (EC)
+ return EC;
+ return std::move(Ret);
}
-Archive::Archive(MemoryBuffer *source, error_code &ec)
- : Binary(Binary::ID_Archive, source) {
+Archive::Archive(MemoryBufferRef Source, std::error_code &ec)
+ : Binary(Binary::ID_Archive, Source), SymbolTable(child_end()),
+ StringTable(child_end()), FirstRegular(child_end()) {
+ StringRef Buffer = Data.getBuffer();
// Check for sufficient magic.
- if (!source || source->getBufferSize()
- < (8 + sizeof(ArchiveMemberHeader) + 2) // Smallest archive.
- || StringRef(source->getBufferStart(), 8) != Magic) {
+ if (Buffer.startswith(ThinMagic)) {
+ IsThin = true;
+ } else if (Buffer.startswith(Magic)) {
+ IsThin = false;
+ } else {
ec = object_error::invalid_file_type;
return;
}
// Get the special members.
- child_iterator i = begin_children(false);
- child_iterator e = end_children();
+ child_iterator i = child_begin(false);
+ child_iterator e = child_end();
- StringRef name;
- if ((ec = i->getName(name)))
+ if (i == e) {
+ ec = std::error_code();
return;
+ }
+
+ StringRef Name = i->getRawName();
// Below is the pattern that is used to figure out the archive format
// GNU archive format
- // First member : / (points to the symbol table )
+ // First member : / (may exist, if it exists, points to the symbol table )
// Second member : // (may exist, if it exists, points to the string table)
// Note : The string table is used if the filename exceeds 15 characters
// BSD archive format
- // First member : __.SYMDEF (points to the symbol table)
- // There is no string table, if the filename exceeds 15 characters or has a
- // embedded space, the filename has #1/<size>, The size represents the size
+ // First member : __.SYMDEF or "__.SYMDEF SORTED" (the symbol table)
+ // There is no string table, if the filename exceeds 15 characters or has a
+ // embedded space, the filename has #1/<size>, The size represents the size
// of the filename that needs to be read after the archive header
// COFF archive format
// First member : /
// Second member : / (provides a directory of symbols)
- // Third member : // contains the string table, this is present even if the
- // string table is empty
- if (name == "/") {
+ // Third member : // (may exist, if it exists, contains the string table)
+ // Note: Microsoft PE/COFF Spec 8.3 says that the third member is present
+ // even if the string table is empty. However, lib.exe does not in fact
+ // seem to create the third member if there's no member whose filename
+ // exceeds 15 characters. So the third member is optional.
+
+ if (Name == "__.SYMDEF") {
+ Format = K_BSD;
SymbolTable = i;
- StringTable = e;
- if (i != e) ++i;
- if ((ec = i->getName(name)))
+ ++i;
+ FirstRegular = i;
+ ec = std::error_code();
+ return;
+ }
+
+ if (Name.startswith("#1/")) {
+ Format = K_BSD;
+ // We know this is BSD, so getName will work since there is no string table.
+ ErrorOr<StringRef> NameOrErr = i->getName();
+ ec = NameOrErr.getError();
+ if (ec)
return;
- if (name[0] != '/') {
- Format = K_GNU;
- } else if ((name.size() > 1) && (name == "//")) {
- Format = K_GNU;
- StringTable = i;
+ Name = NameOrErr.get();
+ if (Name == "__.SYMDEF SORTED" || Name == "__.SYMDEF") {
+ SymbolTable = i;
++i;
- } else {
- Format = K_COFF;
- if (i != e) {
- SymbolTable = i;
- ++i;
- }
- if (i != e) {
- StringTable = i;
- }
}
- } else if (name == "__.SYMDEF") {
- Format = K_BSD;
+ FirstRegular = i;
+ return;
+ }
+
+ // MIPS 64-bit ELF archives use a special format of a symbol table.
+ // This format is marked by `ar_name` field equals to "/SYM64/".
+ // For detailed description see page 96 in the following document:
+ // http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf
+
+ bool has64SymTable = false;
+ if (Name == "/" || Name == "/SYM64/") {
SymbolTable = i;
- StringTable = e;
- }
- ec = object_error::success;
+ if (Name == "/SYM64/")
+ has64SymTable = true;
+
+ ++i;
+ if (i == e) {
+ ec = std::error_code();
+ return;
+ }
+ Name = i->getRawName();
+ }
+
+ if (Name == "//") {
+ Format = has64SymTable ? K_MIPS64 : K_GNU;
+ StringTable = i;
+ ++i;
+ FirstRegular = i;
+ ec = std::error_code();
+ return;
+ }
+
+ if (Name[0] != '/') {
+ Format = has64SymTable ? K_MIPS64 : K_GNU;
+ FirstRegular = i;
+ ec = std::error_code();
+ return;
+ }
+
+ if (Name != "/") {
+ ec = object_error::parse_failed;
+ return;
+ }
+
+ Format = K_COFF;
+ SymbolTable = i;
+
+ ++i;
+ if (i == e) {
+ FirstRegular = i;
+ ec = std::error_code();
+ return;
+ }
+
+ Name = i->getRawName();
+
+ if (Name == "//") {
+ StringTable = i;
+ ++i;
+ }
+
+ FirstRegular = i;
+ ec = std::error_code();
}
-Archive::child_iterator Archive::begin_children(bool skip_internal) const {
- const char *Loc = Data->getBufferStart() + strlen(Magic);
- size_t Size = sizeof(ArchiveMemberHeader) +
- ToHeader(Loc)->getSize();
- Child c(this, StringRef(Loc, Size));
- // Skip internals at the beginning of an archive.
- if (skip_internal && isInternalMember(*ToHeader(Loc)))
- return c.getNext();
+Archive::child_iterator Archive::child_begin(bool SkipInternal) const {
+ if (Data.getBufferSize() == 8) // empty archive.
+ return child_end();
+
+ if (SkipInternal)
+ return FirstRegular;
+
+ const char *Loc = Data.getBufferStart() + strlen(Magic);
+ Child c(this, Loc);
return c;
}
-Archive::child_iterator Archive::end_children() const {
- return Child(this, StringRef(0, 0));
+Archive::child_iterator Archive::child_end() const {
+ return Child(this, nullptr);
}
-error_code Archive::Symbol::getName(StringRef &Result) const {
- Result =
- StringRef(Parent->SymbolTable->getBuffer()->getBufferStart() + StringIndex);
- return object_error::success;
+StringRef Archive::Symbol::getName() const {
+ return Parent->getSymbolTable().begin() + StringIndex;
}
-error_code Archive::Symbol::getMember(child_iterator &Result) const {
- const char *Buf = Parent->SymbolTable->getBuffer()->getBufferStart();
- const char *Offsets = Buf + 4;
+ErrorOr<Archive::child_iterator> Archive::Symbol::getMember() const {
+ const char *Buf = Parent->getSymbolTable().begin();
+ const char *Offsets = Buf;
+ if (Parent->kind() == K_MIPS64)
+ Offsets += sizeof(uint64_t);
+ else
+ Offsets += sizeof(uint32_t);
uint32_t Offset = 0;
if (Parent->kind() == K_GNU) {
- Offset = *(reinterpret_cast<const support::ubig32_t*>(Offsets)
- + SymbolIndex);
+ Offset = read32be(Offsets + SymbolIndex * 4);
+ } else if (Parent->kind() == K_MIPS64) {
+ Offset = read64be(Offsets + SymbolIndex * 8);
} else if (Parent->kind() == K_BSD) {
- assert("BSD format is not supported");
+ // The SymbolIndex is an index into the ranlib structs that start at
+ // Offsets (the first uint32_t is the number of bytes of the ranlib
+ // structs). The ranlib structs are a pair of uint32_t's the first
+ // being a string table offset and the second being the offset into
+ // the archive of the member that defines the symbol. Which is what
+ // is needed here.
+ Offset = read32le(Offsets + SymbolIndex * 8 + 4);
} else {
- uint32_t MemberCount = *reinterpret_cast<const support::ulittle32_t*>(Buf);
-
// Skip offsets.
- Buf += sizeof(support::ulittle32_t)
- + (MemberCount * sizeof(support::ulittle32_t));
-
- uint32_t SymbolCount = *reinterpret_cast<const support::ulittle32_t*>(Buf);
+ uint32_t MemberCount = read32le(Buf);
+ Buf += MemberCount * 4 + 4;
+ uint32_t SymbolCount = read32le(Buf);
if (SymbolIndex >= SymbolCount)
return object_error::parse_failed;
- // Skip SymbolCount to get to the indicies table.
- const char *Indicies = Buf + sizeof(support::ulittle32_t);
+ // Skip SymbolCount to get to the indices table.
+ const char *Indices = Buf + 4;
// Get the index of the offset in the file member offset table for this
// symbol.
- uint16_t OffsetIndex =
- *(reinterpret_cast<const support::ulittle16_t*>(Indicies)
- + SymbolIndex);
+ uint16_t OffsetIndex = read16le(Indices + SymbolIndex * 2);
// Subtract 1 since OffsetIndex is 1 based.
--OffsetIndex;
if (OffsetIndex >= MemberCount)
return object_error::parse_failed;
- Offset = *(reinterpret_cast<const support::ulittle32_t*>(Offsets)
- + OffsetIndex);
+ Offset = read32le(Offsets + OffsetIndex * 4);
}
const char *Loc = Parent->getData().begin() + Offset;
- size_t Size = sizeof(ArchiveMemberHeader) +
- ToHeader(Loc)->getSize();
- Result = Child(Parent, StringRef(Loc, Size));
-
- return object_error::success;
+ child_iterator Iter(Child(Parent, Loc));
+ return Iter;
}
Archive::Symbol Archive::Symbol::getNext() const {
Symbol t(*this);
- // Go to one past next null.
- t.StringIndex =
- Parent->SymbolTable->getBuffer()->getBuffer().find('\0', t.StringIndex) + 1;
+ if (Parent->kind() == K_BSD) {
+ // t.StringIndex is an offset from the start of the __.SYMDEF or
+ // "__.SYMDEF SORTED" member into the string table for the ranlib
+ // struct indexed by t.SymbolIndex . To change t.StringIndex to the
+ // offset in the string table for t.SymbolIndex+1 we subtract the
+ // its offset from the start of the string table for t.SymbolIndex
+ // and add the offset of the string table for t.SymbolIndex+1.
+
+ // The __.SYMDEF or "__.SYMDEF SORTED" member starts with a uint32_t
+ // which is the number of bytes of ranlib structs that follow. The ranlib
+ // structs are a pair of uint32_t's the first being a string table offset
+ // and the second being the offset into the archive of the member that
+ // define the symbol. After that the next uint32_t is the byte count of
+ // the string table followed by the string table.
+ const char *Buf = Parent->getSymbolTable().begin();
+ uint32_t RanlibCount = 0;
+ RanlibCount = read32le(Buf) / 8;
+ // If t.SymbolIndex + 1 will be past the count of symbols (the RanlibCount)
+ // don't change the t.StringIndex as we don't want to reference a ranlib
+ // past RanlibCount.
+ if (t.SymbolIndex + 1 < RanlibCount) {
+ const char *Ranlibs = Buf + 4;
+ uint32_t CurRanStrx = 0;
+ uint32_t NextRanStrx = 0;
+ CurRanStrx = read32le(Ranlibs + t.SymbolIndex * 8);
+ NextRanStrx = read32le(Ranlibs + (t.SymbolIndex + 1) * 8);
+ t.StringIndex -= CurRanStrx;
+ t.StringIndex += NextRanStrx;
+ }
+ } else {
+ // Go to one past next null.
+ t.StringIndex = Parent->getSymbolTable().find('\0', t.StringIndex) + 1;
+ }
++t.SymbolIndex;
return t;
}
-Archive::symbol_iterator Archive::begin_symbols() const {
- const char *buf = SymbolTable->getBuffer()->getBufferStart();
+Archive::symbol_iterator Archive::symbol_begin() const {
+ if (!hasSymbolTable())
+ return symbol_iterator(Symbol(this, 0, 0));
+
+ const char *buf = getSymbolTable().begin();
if (kind() == K_GNU) {
uint32_t symbol_count = 0;
- symbol_count = *reinterpret_cast<const support::ubig32_t*>(buf);
+ symbol_count = read32be(buf);
buf += sizeof(uint32_t) + (symbol_count * (sizeof(uint32_t)));
+ } else if (kind() == K_MIPS64) {
+ uint64_t symbol_count = read64be(buf);
+ buf += sizeof(uint64_t) + (symbol_count * (sizeof(uint64_t)));
} else if (kind() == K_BSD) {
- assert("BSD archive format is not supported");
+ // The __.SYMDEF or "__.SYMDEF SORTED" member starts with a uint32_t
+ // which is the number of bytes of ranlib structs that follow. The ranlib
+ // structs are a pair of uint32_t's the first being a string table offset
+ // and the second being the offset into the archive of the member that
+ // define the symbol. After that the next uint32_t is the byte count of
+ // the string table followed by the string table.
+ uint32_t ranlib_count = 0;
+ ranlib_count = read32le(buf) / 8;
+ const char *ranlibs = buf + 4;
+ uint32_t ran_strx = 0;
+ ran_strx = read32le(ranlibs);
+ buf += sizeof(uint32_t) + (ranlib_count * (2 * (sizeof(uint32_t))));
+ // Skip the byte count of the string table.
+ buf += sizeof(uint32_t);
+ buf += ran_strx;
} else {
uint32_t member_count = 0;
uint32_t symbol_count = 0;
- member_count = *reinterpret_cast<const support::ulittle32_t*>(buf);
+ member_count = read32le(buf);
buf += 4 + (member_count * 4); // Skip offsets.
- symbol_count = *reinterpret_cast<const support::ulittle32_t*>(buf);
+ symbol_count = read32le(buf);
buf += 4 + (symbol_count * 2); // Skip indices.
}
- uint32_t string_start_offset =
- buf - SymbolTable->getBuffer()->getBufferStart();
+ uint32_t string_start_offset = buf - getSymbolTable().begin();
return symbol_iterator(Symbol(this, 0, string_start_offset));
}
-Archive::symbol_iterator Archive::end_symbols() const {
- const char *buf = SymbolTable->getBuffer()->getBufferStart();
- uint32_t symbol_count = 0;
- if (kind() == K_GNU) {
- symbol_count = *reinterpret_cast<const support::ubig32_t*>(buf);
- buf += sizeof(uint32_t) + (symbol_count * (sizeof(uint32_t)));
- } else if (kind() == K_BSD) {
- assert("BSD archive format is not supported");
- } else {
- uint32_t member_count = 0;
- member_count = *reinterpret_cast<const support::ulittle32_t*>(buf);
- buf += 4 + (member_count * 4); // Skip offsets.
- symbol_count = *reinterpret_cast<const support::ulittle32_t*>(buf);
- }
- return symbol_iterator(
- Symbol(this, symbol_count, 0));
+Archive::symbol_iterator Archive::symbol_end() const {
+ if (!hasSymbolTable())
+ return symbol_iterator(Symbol(this, 0, 0));
+ return symbol_iterator(Symbol(this, getNumberOfSymbols(), 0));
+}
+
+uint32_t Archive::getNumberOfSymbols() const {
+ const char *buf = getSymbolTable().begin();
+ if (kind() == K_GNU)
+ return read32be(buf);
+ if (kind() == K_MIPS64)
+ return read64be(buf);
+ if (kind() == K_BSD)
+ return read32le(buf) / 8;
+ uint32_t member_count = 0;
+ member_count = read32le(buf);
+ buf += 4 + (member_count * 4); // Skip offsets.
+ return read32le(buf);
}
Archive::child_iterator Archive::findSym(StringRef name) const {
- Archive::symbol_iterator bs = begin_symbols();
- Archive::symbol_iterator es = end_symbols();
- Archive::child_iterator result;
-
- StringRef symname;
+ Archive::symbol_iterator bs = symbol_begin();
+ Archive::symbol_iterator es = symbol_end();
+
for (; bs != es; ++bs) {
- if (bs->getName(symname))
- return end_children();
- if (symname == name) {
- if (bs->getMember(result))
- return end_children();
- return result;
+ StringRef SymName = bs->getName();
+ if (SymName == name) {
+ ErrorOr<Archive::child_iterator> ResultOrErr = bs->getMember();
+ // FIXME: Should we really eat the error?
+ if (ResultOrErr.getError())
+ return child_end();
+ return ResultOrErr.get();
}
}
- return end_children();
+ return child_end();
+}
+
+bool Archive::hasSymbolTable() const {
+ return SymbolTable != child_end();
}