From a44b1c2486ef2f4d06dd3ee2daf031797e12718b Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Sat, 26 Jan 2013 08:27:36 +0000
Subject: [PATCH] Object/RelocVisitor: Add minimal support, R_MIPS_32, for
 mips.

It fixes llvm-dwarfdump for mips and mipsel.

llvm-svn: 173567
---
 llvm/include/llvm/Object/ELF.h          |  2 ++
 llvm/include/llvm/Object/RelocVisitor.h | 16 ++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/llvm/include/llvm/Object/ELF.h b/llvm/include/llvm/Object/ELF.h
index 136fdf5..1e84831 100644
--- a/llvm/include/llvm/Object/ELF.h
+++ b/llvm/include/llvm/Object/ELF.h
@@ -2345,6 +2345,8 @@ StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
       return "ELF32-arm";
     case ELF::EM_HEXAGON:
       return "ELF32-hexagon";
+    case ELF::EM_MIPS:
+      return "ELF32-mips";
     default:
       return "ELF32-unknown";
     }
diff --git a/llvm/include/llvm/Object/RelocVisitor.h b/llvm/include/llvm/Object/RelocVisitor.h
index d17610a..edac899 100644
--- a/llvm/include/llvm/Object/RelocVisitor.h
+++ b/llvm/include/llvm/Object/RelocVisitor.h
@@ -84,6 +84,14 @@ public:
         HasError = true;
         return RelocToApply();
       }
+    } else if (FileFormat == "ELF32-mips") {
+      switch (RelocType) {
+      case llvm::ELF::R_MIPS_32:
+        return visitELF_MIPS_32(R, Value);
+      default:
+        HasError = true;
+        return RelocToApply();
+      }
     }
     HasError = true;
     return RelocToApply();
@@ -156,6 +164,14 @@ private:
     uint32_t Res = (Value + Addend) & 0xFFFFFFFF;
     return RelocToApply(Res, 4);
   }
+
+  /// MIPS ELF
+  RelocToApply visitELF_MIPS_32(RelocationRef R, uint64_t Value) {
+    int64_t Addend;
+    R.getAdditionalInfo(Addend);
+    uint32_t Res = (Value + Addend) & 0xFFFFFFFF;
+    return RelocToApply(Res, 4);
+  }
 };
 
 }
-- 
2.7.4