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Simplify the handling of the archive string table.

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We only need to store a StringRef

llvm-svn: 251746
This commit is contained in:
Rafael Espindola 2015-10-31 20:06:13 +00:00
parent bfd831d3f2
commit f0f9bc5a37
2 changed files with 11 additions and 13 deletions
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2
include/llvm/Object/Archive.h
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@ -218,7 +218,7 @@ public:
private:
child_iterator SymbolTable;
child_iterator StringTable;
StringRef StringTable;
child_iterator FirstRegular;
unsigned Format : 2;
unsigned IsThin : 1;

22
lib/Object/Archive.cpp
View File

@ -179,17 +179,11 @@ ErrorOr<StringRef> Archive::Child::getName() const {
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;
// Verify it.
if (Parent->StringTable == Parent->child_end()
|| addr < (Parent->StringTable->Data.begin()
+ sizeof(ArchiveMemberHeader))
|| addr > (Parent->StringTable->Data.begin()
+ sizeof(ArchiveMemberHeader)
+ Parent->StringTable->getSize()))
if (offset >= Parent->StringTable.size())
return object_error::parse_failed;
const char *addr = Parent->StringTable.begin() + offset;
// GNU long file names end with a "/\n".
if (Parent->kind() == K_GNU || Parent->kind() == K_MIPS64) {
@ -240,7 +234,7 @@ ErrorOr<std::unique_ptr<Archive>> Archive::create(MemoryBufferRef Source) {
Archive::Archive(MemoryBufferRef Source, std::error_code &ec)
: Binary(Binary::ID_Archive, Source), SymbolTable(child_end()),
StringTable(child_end()), FirstRegular(child_end()) {
FirstRegular(child_end()) {
StringRef Buffer = Data.getBuffer();
// Check for sufficient magic.
if (Buffer.startswith(ThinMagic)) {
@ -328,7 +322,9 @@ Archive::Archive(MemoryBufferRef Source, std::error_code &ec)
if (Name == "//") {
Format = has64SymTable ? K_MIPS64 : K_GNU;
StringTable = i;
// The string table is never an external member, so we just assert on the
// ErrorOr.
StringTable = *i->getBuffer();
++i;
FirstRegular = i;
ec = std::error_code();
@ -360,7 +356,9 @@ Archive::Archive(MemoryBufferRef Source, std::error_code &ec)
Name = i->getRawName();
if (Name == "//") {
StringTable = i;
// The string table is never an external member, so we just assert on the
// ErrorOr.
StringTable = *i->getBuffer();
++i;
}