1/*
2 * Copyright (c) 1997, 2016, 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
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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.
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23 */
24
25#ifndef CPU_SPARC_VM_STUBROUTINES_SPARC_HPP
26#define CPU_SPARC_VM_STUBROUTINES_SPARC_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
33// So unfortunately c2 will call with a pc from a frame object
34// (already adjusted) and a raw pc (unadjusted), so we need to check both.
35// It didn't use to be like this before adapter removal.
36static bool returns_to_call_stub(address return_pc)   {
37  return ((return_pc + frame::pc_return_offset) == _call_stub_return_address) ||
38          (return_pc == _call_stub_return_address );
39}
40
41enum /* platform_dependent_constants */ {
42  // %%%%%%%% May be able to shrink this a lot
43  code_size1 = 20000,           // simply increase if too small (assembler will crash if too small)
44  code_size2 = 27000            // simply increase if too small (assembler will crash if too small)
45};
46
47class Sparc {
48 friend class StubGenerator;
49
50 private:
51  static address _test_stop_entry;
52  static address _stop_subroutine_entry;
53  static address _flush_callers_register_windows_entry;
54
55  static address _partial_subtype_check;
56  // masks and table for CRC32
57  static uint64_t _crc_by128_masks[];
58  static juint    _crc_table[];
59  static juint    _crc32c_table[];
60
61 public:
62  // test assembler stop routine by setting registers
63  static void (*test_stop_entry()) ()                     { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); }
64
65  // a subroutine for debugging assembler code
66  static address stop_subroutine_entry_address()          { return (address)&_stop_subroutine_entry; }
67
68  // flushes (all but current) register window
69  static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); }
70
71  static address partial_subtype_check()                  { return _partial_subtype_check; }
72
73  static address crc_by128_masks_addr()  { return (address)_crc_by128_masks; }
74};
75
76#endif // CPU_SPARC_VM_STUBROUTINES_SPARC_HPP
77