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 = 22000 // 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 _get_previous_fp_entry; 52 static address _get_previous_sp_entry; 53 54 static address _f2i_fixup; 55 static address _f2l_fixup; 56 static address _d2i_fixup; 57 static address _d2l_fixup; 58 59 static address _float_sign_mask; 60 static address _float_sign_flip; 61 static address _double_sign_mask; 62 static address _double_sign_flip; 63 64 static address _zero_blocks; 65 66 static address _has_negatives; 67 static address _has_negatives_long; 68 static address _large_array_equals_byte; 69 static address _large_array_equals_char; 70 static bool _completed; 71 72 public: 73 74 static address get_previous_fp_entry() 75 { 76 return _get_previous_fp_entry; 77 } 78 79 static address get_previous_sp_entry() 80 { 81 return _get_previous_sp_entry; 82 } 83 84 static address f2i_fixup() 85 { 86 return _f2i_fixup; 87 } 88 89 static address f2l_fixup() 90 { 91 return _f2l_fixup; 92 } 93 94 static address d2i_fixup() 95 { 96 return _d2i_fixup; 97 } 98 99 static address d2l_fixup() 100 { 101 return _d2l_fixup; 102 } 103 104 static address float_sign_mask() 105 { 106 return _float_sign_mask; 107 } 108 109 static address float_sign_flip() 110 { 111 return _float_sign_flip; 112 } 113 114 static address double_sign_mask() 115 { 116 return _double_sign_mask; 117 } 118 119 static address double_sign_flip() 120 { 121 return _double_sign_flip; 122 } 123 124 static address zero_blocks() { 125 return _zero_blocks; 126 } 127 128 static address has_negatives() { 129 return _has_negatives; 130 } 131 132 static address has_negatives_long() { 133 return _has_negatives_long; 134 } 135 136 static address large_array_equals_byte() { 137 return _large_array_equals_byte; 138 } 139 140 static address large_array_equals_char() { 141 return _large_array_equals_char; 142 } 143 144 static bool complete() { 145 return _completed; 146 } 147 148 static void set_completed() { 149 _completed = true; 150 } 151 152 private: 153 static juint _crc_table[]; 154 155 }; 156 157 #endif // CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP