[RuntimeDyld] Allow processRelocationRef to process more than one relocation entry at a time.

Some targets require more than one relocation entry to perform a relocation.
This change allows processRelocationRef to process more than one relocation
entry at a time by passing the relocation iterator itself instead of just
the relocation entry.

Related to <rdar://problem/16199095>

llvm-svn: 204439

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/Object/MachOObjectFile.cpp b/llvm/lib/Object/MachOObjectFile.cpp
index 6b1dd875958..b75b3e33b07 100644
--- a/llvm/lib/Object/MachOObjectFile.cpp
+++ b/llvm/lib/Object/MachOObjectFile.cpp
@@ -818,6 +818,16 @@ MachOObjectFile::section_rel_end(DataRefImpl Sec) const {
   return relocation_iterator(RelocationRef(Ret, this));
 }
 
+bool MachOObjectFile::section_rel_empty(DataRefImpl Sec) const {
+  if (is64Bit()) {
+    MachO::section_64 Sect = getSection64(Sec);
+    return Sect.nreloc == 0;
+  } else {
+    MachO::section Sect = getSection(Sec);
+    return Sect.nreloc == 0;
+  }
+}
+
 void MachOObjectFile::moveRelocationNext(DataRefImpl &Rel) const {
   const MachO::any_relocation_info *P =
     reinterpret_cast<const MachO::any_relocation_info *>(Rel.p);