src/hotspot/cpu/x86/interp_masm_x86.cpp

@@ -1433,14 +1433,14 @@
 }
 
 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in,
                                                 int flag_byte_constant) {
   assert(ProfileInterpreter, "must be profiling interpreter");
-  int header_offset = in_bytes(DataLayout::header_offset());
-  int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
+  int header_offset = in_bytes(DataLayout::flags_offset());
+  int header_bits = flag_byte_constant;
   // Set the flag
-  orl(Address(mdp_in, header_offset), header_bits);
+  orb(Address(mdp_in, header_offset), header_bits);
 }
 
 
 
 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,