[Object] Split the ELF interface into 3 parts.

* ELFTypes.h contains template magic for defining types based on endianess, size, and alignment.
* ELFFile.h defines the ELFFile class which provides low level ELF specific access.
* ELFObjectFile.h contains ELFObjectFile which uses ELFFile to implement the ObjectFile interface.

llvm-svn: 188022

1 files changed, 7 insertions, 2 deletions

diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 2e95b6b5518..0e092c0cda2 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -1,4 +1,4 @@
-//===- llvm-readobj.cpp - Dump contents of an Object File -----------------===//
+//===- llvm-readobj.cpp - Dump contents of an Object File -----------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -130,12 +130,15 @@ namespace opts {
     cl::desc("Expand each shown relocation to multiple lines"));
 } // namespace opts
 
+static int ReturnValue = EXIT_SUCCESS;
+
 namespace llvm {
 
 bool error(error_code EC) {
   if (!EC)
     return false;
 
+  ReturnValue = EXIT_FAILURE;
   outs() << "\nError reading file: " << EC.message() << ".\n";
   outs().flush();
   return true;
@@ -157,6 +160,7 @@ static void reportError(StringRef Input, error_code EC) {
 
   errs() << Input << ": " << EC.message() << "\n";
   errs().flush();
+  ReturnValue = EXIT_FAILURE;
 }
 
 static void reportError(StringRef Input, StringRef Message) {
@@ -164,6 +168,7 @@ static void reportError(StringRef Input, StringRef Message) {
     Input = "<stdin>";
 
   errs() << Input << ": " << Message << "\n";
+  ReturnValue = EXIT_FAILURE;
 }
 
 /// @brief Creates an format-specific object file dumper.
@@ -289,5 +294,5 @@ int main(int argc, const char *argv[]) {
   std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(),
                 dumpInput);
 
-  return 0;
+  return ReturnValue;
 }