Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/x86/vm/macroAssembler_x86.cpp
src/cpu/x86/vm/macroAssembler_x86.cpp
- changeset 8997
- f8a45a60bc6b
- parent 8877
- f04097176542
- child 9041
- 95a08233f46c
- child 9327
- f96fcd9e1e1b
equal
deleted
inserted
replaced
| 8996:2667e5c45e24 | 8997:f8a45a60bc6b |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 5 * This code is free software; you can redistribute it and/or modify it |
| 6 * under the terms of the GNU General Public License version 2 only, as | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 4851 void MacroAssembler::lookup_interface_method(Register recv_klass, | 4851 void MacroAssembler::lookup_interface_method(Register recv_klass, |
| 4852 Register intf_klass, | 4852 Register intf_klass, |
| 4853 RegisterOrConstant itable_index, | 4853 RegisterOrConstant itable_index, |
| 4854 Register method_result, | 4854 Register method_result, |
| 4855 Register scan_temp, | 4855 Register scan_temp, |
| 4856 Label& L_no_such_interface) { | 4856 Label& L_no_such_interface, |
| 4857 assert_different_registers(recv_klass, intf_klass, method_result, scan_temp); | 4857 bool return_method) { |
| 4858 assert_different_registers(recv_klass, intf_klass, scan_temp); | |
| 4859 assert_different_registers(method_result, intf_klass, scan_temp); | |
| 4860 assert(recv_klass != method_result || !return_method, | |
| 4861 "recv_klass can be destroyed when method isn't needed"); | |
| 4862 | |
| 4858 assert(itable_index.is_constant() || itable_index.as_register() == method_result, | 4863 assert(itable_index.is_constant() || itable_index.as_register() == method_result, |
| 4859 "caller must use same register for non-constant itable index as for method"); | 4864 "caller must use same register for non-constant itable index as for method"); |
| 4860 | 4865 |
| 4861 // Compute start of first itableOffsetEntry (which is at the end of the vtable) | 4866 // Compute start of first itableOffsetEntry (which is at the end of the vtable) |
| 4862 int vtable_base = InstanceKlass::vtable_start_offset() * wordSize; | 4867 int vtable_base = InstanceKlass::vtable_start_offset() * wordSize; |
| 4874 // Round up to align_object_offset boundary | 4879 // Round up to align_object_offset boundary |
| 4875 // see code for InstanceKlass::start_of_itable! | 4880 // see code for InstanceKlass::start_of_itable! |
| 4876 round_to(scan_temp, BytesPerLong); | 4881 round_to(scan_temp, BytesPerLong); |
| 4877 } | 4882 } |
| 4878 | 4883 |
| 4879 // Adjust recv_klass by scaled itable_index, so we can free itable_index. | 4884 if (return_method) { |
| 4880 assert(itableMethodEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | 4885 // Adjust recv_klass by scaled itable_index, so we can free itable_index. |
| 4881 lea(recv_klass, Address(recv_klass, itable_index, Address::times_ptr, itentry_off)); | 4886 assert(itableMethodEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); |
| 4887 lea(recv_klass, Address(recv_klass, itable_index, Address::times_ptr, itentry_off)); | |
| 4888 } | |
| 4882 | 4889 |
| 4883 // for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) { | 4890 // for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) { |
| 4884 // if (scan->interface() == intf) { | 4891 // if (scan->interface() == intf) { |
| 4885 // result = (klass + scan->offset() + itable_index); | 4892 // result = (klass + scan->offset() + itable_index); |
| 4886 // } | 4893 // } |
| 4910 addptr(scan_temp, scan_step); | 4917 addptr(scan_temp, scan_step); |
| 4911 } | 4918 } |
| 4912 | 4919 |
| 4913 bind(found_method); | 4920 bind(found_method); |
| 4914 | 4921 |
| 4915 // Got a hit. | 4922 if (return_method) { |
| 4916 movl(scan_temp, Address(scan_temp, itableOffsetEntry::offset_offset_in_bytes())); | 4923 // Got a hit. |
| 4917 movptr(method_result, Address(recv_klass, scan_temp, Address::times_1)); | 4924 movl(scan_temp, Address(scan_temp, itableOffsetEntry::offset_offset_in_bytes())); |
| 4925 movptr(method_result, Address(recv_klass, scan_temp, Address::times_1)); | |
| 4926 } | |
| 4918 } | 4927 } |
| 4919 | 4928 |
| 4920 | 4929 |
| 4921 // virtual method calling | 4930 // virtual method calling |
| 4922 void MacroAssembler::lookup_virtual_method(Register recv_klass, | 4931 void MacroAssembler::lookup_virtual_method(Register recv_klass, |
