1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 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 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "ci/ciField.hpp" 26 #include "ci/ciValueKlass.hpp" 27 #include "oops/valueKlass.hpp" 28 29 int ciValueKlass::get_field_index_by_offset(int offset) { 30 // TODO do we need handles here? 31 valueKlassHandle vklass_h(ValueKlass::cast(get_Klass())); 32 methodHandle factory_h(vklass_h->factory_method()); 33 // Search field with field_offset and return factory parameter index 34 for (int index = 0; index < field_count(); ++index) { 35 if (get_field_offset_by_index(index) == offset) { 36 return index; 37 } 38 } 39 ShouldNotReachHere(); 40 return -1; 41 } 42 43 int ciValueKlass::get_field_offset_by_index(int index) const { 44 // Compute the field index from the factory parameter index 45 valueKlassHandle vklass_h(ValueKlass::cast(get_Klass())); 46 methodHandle factory_h(vklass_h->factory_method()); 47 int field_index = factory_h->constMethod()->valuefactory_parameter_mapping_start()[index].data.field_index; 48 // Get the field offset 49 return vklass_h->field_offset(field_index); 50 } 51 52 BasicType ciValueKlass::get_field_type_by_index(int index) const { 53 // Compute the field index from the factory parameter index 54 valueKlassHandle vklass_h(ValueKlass::cast(get_Klass())); 55 methodHandle factory_h(vklass_h->factory_method()); 56 int field_index = factory_h->constMethod()->valuefactory_parameter_mapping_start()[index].data.field_index; 57 // Get the basic type of the field 58 Symbol* signature = vklass_h->field_signature(field_index); 59 return vmSymbols::signature_type(signature); 60 }