AArch64: print relocation addends if present on AArch64

llvm-objdump should provide some way of printing out the addends present in the
.rela sections for debugging purposes if nothing else.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184072 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Object/ELF.h b/include/llvm/Object/ELF.h
index 2c66941bc41a0cc94604dd97e32433e08599cdb7..05c0947d69bed7c7915ef1b8414f851a3bf777c8 100644 (file)
--- a/include/llvm/Object/ELF.h
+++ b/include/llvm/Object/ELF.h
@@ -2270,7 +2270,16 @@ error_code ELFObjectFile<ELFT>::getRelocationValueString(
       res = "Unknown";
     }
     break;
-  case ELF::EM_AARCH64:
+  case ELF::EM_AARCH64: {
+    std::string fmtbuf;
+    raw_string_ostream fmt(fmtbuf);
+    fmt << symname;
+    if (addend != 0)
+      fmt << (addend < 0 ? "" : "+") << addend;
+    fmt.flush();
+    Result.append(fmtbuf.begin(), fmtbuf.end());
+    break;
+  }
   case ELF::EM_ARM:
   case ELF::EM_HEXAGON:
     res = symname;

diff --git a/test/MC/AArch64/elf-reloc-addend.s b/test/MC/AArch64/elf-reloc-addend.s
new file mode 100644 (file)
index 0000000..0e7e2ca
--- /dev/null
+++ b/test/MC/AArch64/elf-reloc-addend.s
@@ -0,0 +1,8 @@
+// RUN: llvm-mc -triple=aarch64-linux-gnu -filetype=obj -o - %s | llvm-objdump -triple=aarch64-linux-gnu -r - | FileCheck %s
+
+       add x0, x4, #:lo12:sym
+// CHECK: 0 R_AARCH64_ADD_ABS_LO12_NC sym
+       add x3, x5, #:lo12:sym+1
+// CHECK: 4 R_AARCH64_ADD_ABS_LO12_NC sym+1
+       add x3, x5, #:lo12:sym-1
+// CHECK: 8 R_AARCH64_ADD_ABS_LO12_NC sym-1