1 files changed, 50 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Object/ELFObjectFile.cpp b/contrib/llvm/lib/Object/ELFObjectFile.cpp
new file mode 100644
index 0000000..ab5f810
--- /dev/null
+++ b/contrib/llvm/lib/Object/ELFObjectFile.cpp
@@ -0,0 +1,50 @@
+//===- ELFObjectFile.cpp - ELF object file implementation -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Part of the ELFObjectFile class implementation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/ELF.h"
+
+namespace llvm {
+
+using namespace object;
+
+namespace {
+  std::pair<unsigned char, unsigned char>
+  getElfArchType(MemoryBuffer *Object) {
+    if (Object->getBufferSize() < ELF::EI_NIDENT)
+      return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
+    return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
+                         , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
+  }
+}
+
+// Creates an in-memory object-file by default: createELFObjectFile(Buffer)
+ObjectFile *ObjectFile::createELFObjectFile(MemoryBuffer *Object) {
+  std::pair<unsigned char, unsigned char> Ident = getElfArchType(Object);
+  error_code ec;
+
+  if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
+    return new ELFObjectFile<support::little, false>(Object, ec);
+  else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
+    return new ELFObjectFile<support::big, false>(Object, ec);
+  else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
+    return new ELFObjectFile<support::big, true>(Object, ec);
+  else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
+    ELFObjectFile<support::little, true> *result =
+          new ELFObjectFile<support::little, true>(Object, ec);
+    return result;
+  }
+
+  report_fatal_error("Buffer is not an ELF object file!");
+}
+
+} // end namespace llvm