1 /*
2 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2016, 2017, SAP SE. 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_S390_VM_STUBROUTINES_ZARCH_64_64_HPP
27 #define CPU_S390_VM_STUBROUTINES_ZARCH_64_64_HPP
28
29 // This file holds the platform specific parts of the StubRoutines
30 // definition. See stubRoutines.hpp for a description on how to extend it.
31
returns_to_call_stub(address return_pc)32 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
33
34 enum { // Platform dependent constants.
35 // TODO: May be able to shrink this a lot
36 code_size1 = 20000, // Simply increase if too small (assembler will crash if too small).
37 code_size2 = 20000 // Simply increase if too small (assembler will crash if too small).
38 };
39
40 // MethodHandles adapters
41 enum method_handles_platform_dependent_constants {
42 method_handles_adapters_code_size = 5000
43 };
44
45 #define CRC32_COLUMN_SIZE 256
46 #define CRC32_BYFOUR
47 #ifdef CRC32_BYFOUR
48 #define CRC32_TABLES 8
49 #else
50 #define CRC32_TABLES 1
51 #endif
52
53 // Comapct string intrinsics: Translate table for string inflate intrinsic. Used by trot instruction.
54 #define TROT_ALIGNMENT 8 // Required by instruction,
55 // guaranteed by jlong table element type.
56 #define TROT_COLUMN_SIZE (256*sizeof(jchar)/sizeof(jlong))
57
58 class zarch {
59 friend class StubGenerator;
60
61 public:
62 enum { nof_instance_allocators = 10 };
63
64 // allocator lock values
65 enum {
66 unlocked = 0,
67 locked = 1
68 };
69
70 private:
71 static int _atomic_memory_operation_lock;
72
73 static address _partial_subtype_check;
74 static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
75 static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
76
77 // Comapct string intrinsics: Translate table for string inflate intrinsic. Used by trot instruction.
78 static address _trot_table_addr;
79 static jlong _trot_table[TROT_COLUMN_SIZE];
80
81 public:
82 // Global lock for everyone who needs to use atomic_compare_and_exchange
83 // or atomic_increment -- should probably use more locks for more
84 // scalability -- for instance one for each eden space or group of.
85
86 // Address of the lock for atomic_compare_and_exchange.
atomic_memory_operation_lock_addr()87 static int* atomic_memory_operation_lock_addr() { return &_atomic_memory_operation_lock; }
88
89 // Accessor and mutator for _atomic_memory_operation_lock.
atomic_memory_operation_lock()90 static int atomic_memory_operation_lock() { return _atomic_memory_operation_lock; }
set_atomic_memory_operation_lock(int value)91 static void set_atomic_memory_operation_lock(int value) { _atomic_memory_operation_lock = value; }
92
partial_subtype_check()93 static address partial_subtype_check() { return _partial_subtype_check; }
94
95 static void generate_load_absolute_address(MacroAssembler* masm, Register table, address table_addr, uint64_t table_contents);
96 static void generate_load_crc_table_addr(MacroAssembler* masm, Register table);
97 static void generate_load_crc32c_table_addr(MacroAssembler* masm, Register table);
98
99 // Comapct string intrinsics: Translate table for string inflate intrinsic. Used by trot instruction.
100 static void generate_load_trot_table_addr(MacroAssembler* masm, Register table);
101 };
102
103 #endif // CPU_S390_VM_STUBROUTINES_ZARCH_64_64_HPP
104