1 /* 2 * Copyright (c) 2003, 2011, 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 #ifndef CPU_X86_VM_STUBROUTINES_X86_64_HPP 26 #define CPU_X86_VM_STUBROUTINES_X86_64_HPP 27 28 // This file holds the platform specific parts of the StubRoutines 29 // definition. See stubRoutines.hpp for a description on how to 30 // extend it. 31 32 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; } 33 34 enum platform_dependent_constants { 35 code_size1 = 19000, // simply increase if too small (assembler will crash if too small) 36 code_size2 = 22000 // simply increase if too small (assembler will crash if too small) 37 }; 38 39 class x86 { 40 friend class StubGenerator; 41 42 private: 43 static address _get_previous_fp_entry; 44 static address _get_previous_sp_entry; 45 static address _verify_mxcsr_entry; 46 47 static address _f2i_fixup; 48 static address _f2l_fixup; 49 static address _d2i_fixup; 50 static address _d2l_fixup; 51 52 static address _float_sign_mask; 53 static address _float_sign_flip; 54 static address _double_sign_mask; 55 static address _double_sign_flip; 56 static address _mxcsr_std; 57 58 public: 59 60 static address get_previous_fp_entry() 61 { 62 return _get_previous_fp_entry; 63 } 64 65 static address get_previous_sp_entry() 66 { 67 return _get_previous_sp_entry; 68 } 69 70 static address verify_mxcsr_entry() 71 { 72 return _verify_mxcsr_entry; 73 } 74 75 static address f2i_fixup() 76 { 77 return _f2i_fixup; 78 } 79 80 static address f2l_fixup() 81 { 82 return _f2l_fixup; 83 } 84 85 static address d2i_fixup() 86 { 87 return _d2i_fixup; 88 } 89 90 static address d2l_fixup() 91 { 92 return _d2l_fixup; 93 } 94 95 static address float_sign_mask() 96 { 97 return _float_sign_mask; 98 } 99 100 static address float_sign_flip() 101 { 102 return _float_sign_flip; 103 } 104 105 static address double_sign_mask() 106 { 107 return _double_sign_mask; 108 } 109 110 static address double_sign_flip() 111 { 112 return _double_sign_flip; 113 } 114 115 static address mxcsr_std() 116 { 117 return _mxcsr_std; 118 } 119 }; 120 121 #endif // CPU_X86_VM_STUBROUTINES_X86_64_HPP