1 /*
 2  * Copyright (c) 2008, 2026, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 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
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18  *
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20  * or visit www.oracle.com if you need additional information or have any
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24 
25 #ifndef CPU_ARM_GLOBALS_ARM_HPP
26 #define CPU_ARM_GLOBALS_ARM_HPP
27 
28 //
29 // Sets the default values for platform dependent flags used by the runtime system.
30 // (see globals.hpp)
31 //
32 
33 define_pd_global(bool,  ImplicitNullChecks,       true);  // Generate code for implicit null checks
34 define_pd_global(bool,  UncommonNullCast,         true);  // Uncommon-trap nulls past to check cast
35 define_pd_global(bool,  TrapBasedNullChecks,      false); // Not needed
36 
37 define_pd_global(bool,  DelayCompilerStubsGeneration, false); // No need - only few compiler's stubs
38 
39 define_pd_global(size_t, CodeCacheSegmentSize,     64);
40 define_pd_global(uint,   CodeEntryAlignment,       16);
41 define_pd_global(intx,   OptoLoopAlignment,        16);
42 
43 #define DEFAULT_STACK_YELLOW_PAGES (2)
44 #define DEFAULT_STACK_RED_PAGES (1)
45 #define DEFAULT_STACK_SHADOW_PAGES (5 DEBUG_ONLY(+1))
46 #define DEFAULT_STACK_RESERVED_PAGES (0)
47 
48 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
49 #define MIN_STACK_RED_PAGES    DEFAULT_STACK_RED_PAGES
50 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES
51 #define MIN_STACK_RESERVED_PAGES (0)
52 
53 define_pd_global(intx,  StackYellowPages,         DEFAULT_STACK_YELLOW_PAGES);
54 define_pd_global(intx,  StackRedPages,            DEFAULT_STACK_RED_PAGES);
55 define_pd_global(intx,  StackShadowPages,         DEFAULT_STACK_SHADOW_PAGES);
56 define_pd_global(intx,  StackReservedPages,       DEFAULT_STACK_RESERVED_PAGES);
57 
58 define_pd_global(bool, VMContinuations, false);
59 
60 #if  defined(COMPILER1) || defined(COMPILER2)
61 define_pd_global(intx,  InlineSmallCode,          1500);
62 #endif
63 
64 define_pd_global(bool,  RewriteBytecodes,         true);
65 define_pd_global(bool,  RewriteFrequentPairs,     true);
66 
67 define_pd_global(bool,  PreserveFramePointer,     false);
68 
69 define_pd_global(uintx, TypeProfileLevel, 0);
70 
71 // No performance work done here yet.
72 define_pd_global(bool, CompactStrings, false);
73 
74 define_pd_global(intx, InitArrayShortSize, 8*BytesPerLong);
75 
76 define_pd_global(bool, InlineTypePassFieldsAsArgs, false);
77 define_pd_global(bool, InlineTypeReturnedAsFields, false);
78 
79 #define ARCH_FLAGS(develop,     \
80                    product,     \
81                    range,       \
82                    constraint)
83 
84 // end of ARCH_FLAGS
85 
86 #endif // CPU_ARM_GLOBALS_ARM_HPP