Revert "readelf: Do not require EI_OSABI for IFUNC."

This reverts commit ffbbab0.

Author: marxin

binutils/readelf.c

@@ -12724,9 +12724,6 @@ get_symbol_type (Filedata * filedata, unsigned int type)
     case STT_TLS:	return "TLS";
     case STT_RELC:      return "RELC";
     case STT_SRELC:     return "SRELC";
-    case STT_GNU_IFUNC: return "IFUNC"; /* As mentioned in PR29718, do not
-					   require EI_OSABI as IFUNC is
-					   a reseved name.  */
     default:
       if (type >= STT_LOPROC && type <= STT_HIPROC)
 	{
@@ -12751,6 +12748,11 @@ get_symbol_type (Filedata * filedata, unsigned int type)
 		return "HP_STUB";
 	    }
 
+	  if (type == STT_GNU_IFUNC
+	      && (filedata->file_header.e_ident[EI_OSABI] == ELFOSABI_GNU
+		  || filedata->file_header.e_ident[EI_OSABI] == ELFOSABI_FREEBSD))
+	    return "IFUNC";
+
 	  snprintf (buff, sizeof (buff), _("<OS specific>: %d"), type);
 	}
       else