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
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.
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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.
returns_to_call_stub(address return_pc)36 static 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
41 enum /* 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 = 29000 // simply increase if too small (assembler will crash if too small)
45 };
46
47 class 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
test_stop_entry()63 static void (*test_stop_entry()) () { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); }
64
65 // a subroutine for debugging assembler code
stop_subroutine_entry_address()66 static address stop_subroutine_entry_address() { return (address)&_stop_subroutine_entry; }
67
68 // flushes (all but current) register window
flush_callers_register_windows_func()69 static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); }
70
partial_subtype_check()71 static address partial_subtype_check() { return _partial_subtype_check; }
72
crc_by128_masks_addr()73 static address crc_by128_masks_addr() { return (address)_crc_by128_masks; }
74 };
75
76 #endif // CPU_SPARC_VM_STUBROUTINES_SPARC_HPP
77