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.
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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.
38static bool    returns_to_call_stub(address return_pc)   {
39  return return_pc == _call_stub_return_address + (NotifySimulator ? -4 : 0);
40}
41
42enum 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
47class 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 bool _completed;
69
70 public:
71
72  static address get_previous_fp_entry()
73  {
74    return _get_previous_fp_entry;
75  }
76
77  static address get_previous_sp_entry()
78  {
79    return _get_previous_sp_entry;
80  }
81
82  static address f2i_fixup()
83  {
84    return _f2i_fixup;
85  }
86
87  static address f2l_fixup()
88  {
89    return _f2l_fixup;
90  }
91
92  static address d2i_fixup()
93  {
94    return _d2i_fixup;
95  }
96
97  static address d2l_fixup()
98  {
99    return _d2l_fixup;
100  }
101
102  static address float_sign_mask()
103  {
104    return _float_sign_mask;
105  }
106
107  static address float_sign_flip()
108  {
109    return _float_sign_flip;
110  }
111
112  static address double_sign_mask()
113  {
114    return _double_sign_mask;
115  }
116
117  static address double_sign_flip()
118  {
119    return _double_sign_flip;
120  }
121
122  static address zero_blocks() {
123    return _zero_blocks;
124  }
125
126  static address has_negatives() {
127    return _has_negatives;
128  }
129
130  static address has_negatives_long() {
131      return _has_negatives_long;
132  }
133
134  static bool complete() {
135    return _completed;
136  }
137
138  static void set_completed() {
139    _completed = true;
140  }
141
142private:
143  static juint    _crc_table[];
144
145};
146
147#endif // CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP
148