1 /* 2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2014, Red Hat Inc. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP 27 #define CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP 28 29 // This file holds the platform specific parts of the StubRoutines 30 // definition. See stubRoutines.hpp for a description on how to 31 // extend it. 32 33 // n.b. if we are notifying entry/exit to the simulator then the call 34 // stub does a notify at normal return placing 35 // call_stub_return_address one instruction beyond the notify. the 36 // latter address is sued by the stack unwind code when doign an 37 // exception return. 38 static bool returns_to_call_stub(address return_pc) { 39 return return_pc == _call_stub_return_address + (NotifySimulator ? -4 : 0); 40 } 41 42 enum platform_dependent_constants { 43 code_size1 = 19000, // simply increase if too small (assembler will crash if too small) 44 code_size2 = 23000 // simply increase if too small (assembler will crash if too small) 45 }; 46 47 class aarch64 { 48 friend class StubGenerator; 49 50 private: 51 static address _shenandoah_wb; 52 53 static address _get_previous_fp_entry; 54 static address _get_previous_sp_entry; 55 56 static address _f2i_fixup; 57 static address _f2l_fixup; 58 static address _d2i_fixup; 59 static address _d2l_fixup; 60 61 static address _float_sign_mask; 62 static address _float_sign_flip; 63 static address _double_sign_mask; 64 static address _double_sign_flip; 65 66 static address _zero_blocks; 67 68 static address _has_negatives; 69 static address _has_negatives_long; 70 static address _large_array_equals; 71 static bool _completed; 72 73 public: 74 75 static address get_previous_fp_entry() 76 { 77 return _get_previous_fp_entry; 78 } 79 80 static address get_previous_sp_entry() 81 { 82 return _get_previous_sp_entry; 83 } 84 85 static address f2i_fixup() 86 { 87 return _f2i_fixup; 88 } 89 90 static address f2l_fixup() 91 { 92 return _f2l_fixup; 93 } 94 95 static address d2i_fixup() 96 { 97 return _d2i_fixup; 98 } 99 100 static address d2l_fixup() 101 { 102 return _d2l_fixup; 103 } 104 105 static address float_sign_mask() 106 { 107 return _float_sign_mask; 108 } 109 110 static address float_sign_flip() 111 { 112 return _float_sign_flip; 113 } 114 115 static address double_sign_mask() 116 { 117 return _double_sign_mask; 118 } 119 120 static address double_sign_flip() 121 { 122 return _double_sign_flip; 123 } 124 125 static address shenandoah_wb() 126 { 127 return _shenandoah_wb; 128 } 129 130 static address zero_blocks() { 131 return _zero_blocks; 132 } 133 134 static address has_negatives() { 135 return _has_negatives; 136 } 137 138 static address has_negatives_long() { 139 return _has_negatives_long; 140 } 141 142 static address large_array_equals() { 143 return _large_array_equals; 144 } 145 146 static bool complete() { 147 return _completed; 148 } 149 150 static void set_completed() { 151 _completed = true; 152 } 153 154 private: 155 static juint _crc_table[]; 156 157 }; 158 159 #endif // CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP