1 /* 2 * Copyright (c) 2023, 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 "precompiled.hpp" 26 #include "resolvedFieldEntry.hpp" 27 #include "interpreter/bytecodes.hpp" 28 #include "oops/instanceOop.hpp" 29 #include "utilities/globalDefinitions.hpp" 30 31 void ResolvedFieldEntry::print_on(outputStream* st) const { 32 st->print_cr("Field Entry:"); 33 34 if (field_holder() != nullptr) { 35 st->print_cr(" - Holder: " INTPTR_FORMAT " %s", p2i(field_holder()), field_holder()->external_name()); 36 } else { 37 st->print_cr("- Holder: null"); 38 } 39 st->print_cr(" - Offset: %d", field_offset()); 40 st->print_cr(" - Field Index: %d", field_index()); 41 st->print_cr(" - CP Index: %d", constant_pool_index()); 42 st->print_cr(" - TOS: %s", type2name(as_BasicType((TosState)tos_state()))); 43 st->print_cr(" - Is Final: %d", is_final()); 44 st->print_cr(" - Is Volatile: %d", is_volatile()); 45 st->print_cr(" - Is Flat: %d", is_flat()); 46 st->print_cr(" - Is Null Free Inline Type: %d", is_null_free_inline_type()); 47 st->print_cr(" - Get Bytecode: %s", Bytecodes::name((Bytecodes::Code)get_code())); 48 st->print_cr(" - Put Bytecode: %s", Bytecodes::name((Bytecodes::Code)put_code())); 49 } 50 51 bool ResolvedFieldEntry::is_valid() const { 52 return field_holder()->is_instance_klass() && 53 field_offset() >= instanceOopDesc::base_offset_in_bytes() && field_offset() < 0x7fffffff && 54 as_BasicType((TosState)tos_state()) != T_ILLEGAL && 55 _flags < (1 << (max_flag_shift + 1)) && 56 (get_code() == 0 || get_code() == Bytecodes::_getstatic || get_code() == Bytecodes::_getfield) && 57 (put_code() == 0 || put_code() == Bytecodes::_putstatic || put_code() == Bytecodes::_putfield); 58 } 59 60 void ResolvedFieldEntry::remove_unshareable_info() { 61 u2 saved_cpool_index = _cpool_index; 62 memset(this, 0, sizeof(*this)); 63 _cpool_index = saved_cpool_index; 64 }