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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2014-01-24 21:32:21 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2014-01-24 21:32:21 +0000 |
| commit | afcc3df7f4db85832b13a6f4d58e24ac9e7ccc43 (patch) | |
| tree | e608147b8d62c19296d96c7e00de10c220811fe4 /llvm/lib/Object/ELFObjectFile.cpp | |
| parent | 1b392619907d1b5bed4d8533ea8c0cf7e19c5b48 (diff) | |
| download | bcm5719-llvm-afcc3df7f4db85832b13a6f4d58e24ac9e7ccc43.tar.gz bcm5719-llvm-afcc3df7f4db85832b13a6f4d58e24ac9e7ccc43.zip | |
Make ObjectFile ownership of the MemoryBuffer optional.
This allows llvm-ar to mmap the input files only once.
llvm-svn: 200040
Diffstat (limited to 'llvm/lib/Object/ELFObjectFile.cpp')
| -rw-r--r-- | llvm/lib/Object/ELFObjectFile.cpp | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/llvm/lib/Object/ELFObjectFile.cpp b/llvm/lib/Object/ELFObjectFile.cpp index 2736bc42f2e..0d90c906ccb 100644 --- a/llvm/lib/Object/ELFObjectFile.cpp +++ b/llvm/lib/Object/ELFObjectFile.cpp @@ -17,7 +17,8 @@ namespace llvm { using namespace object; -ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj) { +ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj, + bool BufferOwned) { std::pair<unsigned char, unsigned char> Ident = getElfArchType(Obj); std::size_t MaxAlignment = 1ULL << countTrailingZeros(uintptr_t(Obj->getBufferStart())); @@ -27,41 +28,49 @@ ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj) { if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB) #if !LLVM_IS_UNALIGNED_ACCESS_FAST if (MaxAlignment >= 4) - R.reset(new ELFObjectFile<ELFType<support::little, 4, false> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::little, 4, false> >( + Obj, EC, BufferOwned)); else #endif if (MaxAlignment >= 2) - R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >( + Obj, EC, BufferOwned)); else llvm_unreachable("Invalid alignment for ELF file!"); else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB) #if !LLVM_IS_UNALIGNED_ACCESS_FAST if (MaxAlignment >= 4) - R.reset(new ELFObjectFile<ELFType<support::big, 4, false> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::big, 4, false> >(Obj, EC, + BufferOwned)); else #endif if (MaxAlignment >= 2) - R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC, + BufferOwned)); else llvm_unreachable("Invalid alignment for ELF file!"); else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB) #if !LLVM_IS_UNALIGNED_ACCESS_FAST if (MaxAlignment >= 8) - R.reset(new ELFObjectFile<ELFType<support::big, 8, true> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::big, 8, true> >(Obj, EC, + BufferOwned)); else #endif if (MaxAlignment >= 2) - R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC, + BufferOwned)); else llvm_unreachable("Invalid alignment for ELF file!"); else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) { #if !LLVM_IS_UNALIGNED_ACCESS_FAST if (MaxAlignment >= 8) - R.reset(new ELFObjectFile<ELFType<support::little, 8, true> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::little, 8, true> >( + Obj, EC, BufferOwned)); else #endif if (MaxAlignment >= 2) - R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >(Obj, EC)); + R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >( + Obj, EC, BufferOwned)); else llvm_unreachable("Invalid alignment for ELF file!"); } |
