1 /*
2 * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
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_ZERO_GLOBALS_ZERO_HPP
27 #define CPU_ZERO_GLOBALS_ZERO_HPP
28
29 #include "utilities/globalDefinitions.hpp"
30 #include "utilities/macros.hpp"
31
32 // Set the default values for platform dependent flags used by the
33 // runtime system. See globals.hpp for details of what they do.
34
35 define_pd_global(bool, ImplicitNullChecks, true);
36 define_pd_global(bool, TrapBasedNullChecks, false);
37 define_pd_global(bool, UncommonNullCast, true);
38
39 define_pd_global(uintx, CodeCacheSegmentSize, 64 COMPILER1_AND_COMPILER2_PRESENT(+64)); // Tiered compilation has large code-entry alignment.
40 define_pd_global(intx, CodeEntryAlignment, 32);
41 define_pd_global(intx, OptoLoopAlignment, 16);
42 define_pd_global(intx, InlineSmallCode, 1000);
43
44 // not used, but must satisfy following constraints:
45 // 1.) <VALUE> must be in the allowed range for intx *and*
46 // 2.) <VALUE> % BytesPerLong == 0 so as to not
47 // violate the constraint verifier on JVM start-up.
48 define_pd_global(intx, InitArrayShortSize, 0);
49
50 #define DEFAULT_STACK_YELLOW_PAGES (2)
51 #define DEFAULT_STACK_RED_PAGES (1)
52 #define DEFAULT_STACK_SHADOW_PAGES (5 LP64_ONLY(+1) DEBUG_ONLY(+3))
53 #define DEFAULT_STACK_RESERVED_PAGES (0)
54
55 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
56 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
57 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES
58 #define MIN_STACK_RESERVED_PAGES (0)
59
60 define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES);
61 define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES);
62 define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES);
63 define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES);
64
65 define_pd_global(bool, VMContinuations, false);
66
67 define_pd_global(bool, RewriteBytecodes, true);
68 define_pd_global(bool, RewriteFrequentPairs, true);
69
70 define_pd_global(uintx, TypeProfileLevel, 0);
71
72 define_pd_global(bool, PreserveFramePointer, false);
73
74 define_pd_global(bool, InlineTypePassFieldsAsArgs, false);
75 define_pd_global(bool, InlineTypeReturnedAsFields, false);
76
77 define_pd_global(bool, CompactStrings, true);
78
79 #define ARCH_FLAGS(develop, \
80 product, \
81 notproduct, \
82 range, \
83 constraint) \
84 \
85 product(bool, UseFastEmptyMethods, true, \
86 "Use fast method entry code for empty methods") \
87 \
88 product(bool, UseFastAccessorMethods, true, \
89 "Use fast method entry code for accessor methods") \
90 \
91 product(bool, DecodeErrorContext, false, DIAGNOSTIC, \
92 "Try to decode the architecture-specific context for better " \
93 "diagnostics")
94
95 // end of ARCH_FLAGS
96
97 #endif // CPU_ZERO_GLOBALS_ZERO_HPP