[mach-o] create __unwind_info section on x86_64

This is a minimally useful pass to construct the __unwind_info section in a
final object from the various __compact_unwind inputs. Currently it doesn't
produce any compressed pages, only works for x86_64 and will fail if any
function ends up without __compact_unwind.

rdar://problem/18208653

llvm-svn: 218703

1 files changed, 3 insertions, 1 deletions

diff --git a/lld/lib/ReaderWriter/MachO/MachONormalizedFileFromAtoms.cpp b/lld/lib/ReaderWriter/MachO/MachONormalizedFileFromAtoms.cpp
index 790559f10db..396742456ff 100644
--- a/lld/lib/ReaderWriter/MachO/MachONormalizedFileFromAtoms.cpp
+++ b/lld/lib/ReaderWriter/MachO/MachONormalizedFileFromAtoms.cpp
@@ -220,6 +220,7 @@ const MachOFinalSectionFromAtomType sectsToAtomType[] = {
   ENTRY("__TEXT", "__stub_helper",    S_REGULAR,          typeStubHelper),
   ENTRY("__TEXT", "__gcc_except_tab", S_REGULAR,          typeLSDA),
   ENTRY("__TEXT", "__eh_frame",       S_COALESCED,        typeCFI),
+  ENTRY("__TEXT", "__unwind_info",    S_REGULAR,          typeProcessedUnwindInfo),
   ENTRY("__DATA", "__data",           S_REGULAR,          typeData),
   ENTRY("__DATA", "__const",          S_REGULAR,          typeConstData),
   ENTRY("__DATA", "__cfstring",       S_REGULAR,          typeCFString),
@@ -565,7 +566,8 @@ void Util::copySectionContent(NormalizedFile &file) {
     for (AtomInfo &ai : si->atomsAndOffsets) {
       uint8_t *atomContent = reinterpret_cast<uint8_t*>
                                           (&sectionContent[ai.offsetInSection]);
-      _archHandler.generateAtomContent(*ai.atom, r, addrForAtom, atomContent);
+      _archHandler.generateAtomContent(*ai.atom, r, addrForAtom,
+                                       _context.baseAddress(), atomContent);
     }
   }
 }