[Object, DebugInfo] Make DWARFContext BE-aware.

test/DebugInfo/member-pointers.ll would not fail in targetting BE any more.

llvm-svn: 171943
diff --git a/llvm/include/llvm/Object/Binary.h b/llvm/include/llvm/Object/Binary.h
index d555de3..8bbcd8b 100644
--- a/llvm/include/llvm/Object/Binary.h
+++ b/llvm/include/llvm/Object/Binary.h
@@ -49,8 +49,8 @@
     ID_EndObjects
   };
 
-  static inline unsigned int getELFType(bool isLittleEndian, bool is64Bits) {
-    if (isLittleEndian)
+  static inline unsigned int getELFType(bool isLE, bool is64Bits) {
+    if (isLE)
       return is64Bits ? ID_ELF64L : ID_ELF32L;
     else
       return is64Bits ? ID_ELF64B : ID_ELF32B;
@@ -85,6 +85,10 @@
   bool isCOFF() const {
     return TypeID == ID_COFF;
   }
+
+  bool isLittleEndian() const {
+    return !(TypeID == ID_ELF32B || TypeID == ID_ELF64B);
+  }
 };
 
 /// @brief Create a Binary from Source, autodetecting the file type.
diff --git a/llvm/lib/DebugInfo/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARFContext.cpp
index d6d9fcf..247ee5b 100644
--- a/llvm/lib/DebugInfo/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARFContext.cpp
@@ -352,7 +352,7 @@
 }
 
 DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
-  IsLittleEndian(true /* FIXME */) {
+  IsLittleEndian(Obj->isLittleEndian()) {
   error_code ec;
   for (object::section_iterator i = Obj->begin_sections(),
          e = Obj->end_sections();