Object/RelocVisitor: Add minimal support, R_MIPS_32, for mips.

It fixes llvm-dwarfdump for mips and mipsel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173567 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 18 insertions, 0 deletions

diff --git a/include/llvm/Object/ELF.h b/include/llvm/Object/ELF.h
index 136fdf5..1e84831 100644
--- a/include/llvm/Object/ELF.h
+++ b/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/include/llvm/Object/RelocVisitor.h b/include/llvm/Object/RelocVisitor.h
index d17610a..edac899 100644
--- a/include/llvm/Object/RelocVisitor.h
+++ b/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);
+  }
 };
 
 }