1070 void InterpreterMacroAssembler::profile_obj_type(Register obj, const Address& mdo_addr) {

  1071   Label update, next, none;

  1072 

  1073   verify_oop(obj);

  1074 

  1075   testptr(obj, obj);

  1076   jccb(Assembler::notZero, update);

  1077   orptr(mdo_addr, TypeEntries::null_seen);

  1078   jmpb(next);

  1079 

  1080   bind(update);

  1081   load_klass(obj, obj);

  1082 

  1083   xorptr(obj, mdo_addr);

  1084   testptr(obj, TypeEntries::type_klass_mask);

  1085   jccb(Assembler::zero, next); // klass seen before, nothing to

  1086                                // do. The unknown bit may have been

  1087                                // set already but no need to check.

  1088 

  1089   testptr(obj, TypeEntries::type_unknown);

  1090   jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.

  1091 

  1092   // There is a chance that by the time we do these checks (re-reading

  1093   // profiling data from memory) another thread has set the profling

  1094   // to this obj's klass and we set the profiling as unknow

  1095   // erroneously

  1096   cmpptr(mdo_addr, 0);

  1097   jccb(Assembler::equal, none);

  1098   cmpptr(mdo_addr, TypeEntries::null_seen);

  1099   jccb(Assembler::equal, none);

  1100   // There is a chance that the checks above (re-reading profiling

  1101   // data from memory) fail if another thread has just set the

  1102   // profiling to this obj's klass

  1103   xorptr(obj, mdo_addr);

  1104   testptr(obj, TypeEntries::type_klass_mask);

  1105   jccb(Assembler::zero, next);

  1106 

  1107   // different than before. Cannot keep accurate profile.

  1108   orptr(mdo_addr, TypeEntries::type_unknown);

  1109   jmpb(next);

  1110 

  1111   bind(none);

  1112   // first time here. Set profile type.

  1113   movptr(mdo_addr, obj);

  1114 

  1115   bind(next);

  1116 }

  1117 

  1118 void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual) {

  1119   if (!ProfileInterpreter) {

  1120     return;

  1121   }

  1122 

  1123   if (MethodData::profile_arguments()) {

  1124     Label profile_continue;

  1125 

  1126     test_method_data_pointer(mdp, profile_continue);

  1127 

  1128     int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size());

  1129 

  1130     cmpb(Address(mdp, in_bytes(DataLayout::tag_offset()) - off_to_start), is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag);

  1131     jcc(Assembler::notEqual, profile_continue);

  1132 

  1133     Label done;

  1134     int off_to_args = in_bytes(TypeStackSlotEntries::args_data_offset());

  1135     addptr(mdp, off_to_args);

  1136 

  1137     for (int i = 0; i < TypeProfileArgsLimit; i++) {

  1138       if (i > 0) {

  1139         movq(tmp, Address(mdp, in_bytes(TypeStackSlotEntries::cell_count_offset())-off_to_args));

  1140         subl(tmp, i*TypeStackSlotEntries::per_arg_count());

  1141         cmpl(tmp, TypeStackSlotEntries::per_arg_count());

  1142         jcc(Assembler::less, done);

  1143       }

  1144       movptr(tmp, Address(callee, Method::const_offset()));

  1145       load_unsigned_short(tmp, Address(tmp, ConstMethod::size_of_parameters_offset()));

  1146       subq(tmp, Address(mdp, in_bytes(TypeStackSlotEntries::stack_slot_offset(i))-off_to_args));

  1147       subl(tmp, 1);

  1148       Address arg_addr = argument_address(tmp);

  1149       movptr(tmp, arg_addr);

  1150 

  1151       Address mdo_arg_addr(mdp, in_bytes(TypeStackSlotEntries::type_offset(i))-off_to_args);

  1152       profile_obj_type(tmp, mdo_arg_addr);

  1153 

  1154       int to_add = in_bytes(TypeStackSlotEntries::per_arg_size());

  1155       addptr(mdp, to_add);

  1156       off_to_args += to_add;

  1157     }

  1158 

  1159     bind(done);

  1160 

  1161     movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp);

  1162 

  1163     bind(profile_continue);

  1164   }

  1165 }