[RuntimeDyld][ORC] Add support for Thumb mode to RuntimeDyldMachOARM.

This patch adds support for thumb relocations to RuntimeDyldMachOARM, and adds
a target-specific flags field to JITSymbolFlags (so that on ARM we can record
whether each symbol is Thumb-mode code).

RuntimeDyldImpl::emitSection is modified to ensure that stubs memory is
correctly aligned based on the size returned by getStubAlignment().

llvm-svn: 310517

1 files changed, 3 insertions, 1 deletions

diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
index 80e9c7ac18a..b0561f68edb 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
@@ -55,7 +55,8 @@ Expected<relocation_iterator>
 RuntimeDyldMachO::processScatteredVANILLA(
                           unsigned SectionID, relocation_iterator RelI,
                           const ObjectFile &BaseObjT,
-                          RuntimeDyldMachO::ObjSectionToIDMap &ObjSectionToID) {
+                          RuntimeDyldMachO::ObjSectionToIDMap &ObjSectionToID,
+                          bool TargetIsLocalThumbFunc) {
   const MachOObjectFile &Obj =
     static_cast<const MachOObjectFile&>(BaseObjT);
   MachO::any_relocation_info RE =
@@ -85,6 +86,7 @@ RuntimeDyldMachO::processScatteredVANILLA(
 
   Addend -= SectionBaseAddr;
   RelocationEntry R(SectionID, Offset, RelocType, Addend, IsPCRel, Size);
+  R.IsTargetThumbFunc = TargetIsLocalThumbFunc;
 
   addRelocationForSection(R, TargetSectionID);