[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

2 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/Object/COFFObjectFile.cpp b/llvm/lib/Object/COFFObjectFile.cpp
index 5ad8f8443f7..43913e44857 100644
--- a/llvm/lib/Object/COFFObjectFile.cpp
+++ b/llvm/lib/Object/COFFObjectFile.cpp
@@ -410,6 +410,11 @@ relocation_iterator COFFObjectFile::section_rel_end(DataRefImpl Ref) const {
   return relocation_iterator(RelocationRef(Ret, this));
 }
 
+bool COFFObjectFile::section_rel_empty(DataRefImpl Ref) const {
+  const coff_section *Sec = toSec(Ref);
+  return Sec->NumberOfRelocations == 0;
+}
+
 // Initialize the pointer to the symbol table.
 error_code COFFObjectFile::initSymbolTablePtr() {
   if (error_code EC = getObject(
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);