1 /* 2 * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2015, Red Hat Inc. 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_AARCH64_VM_GLOBALS_AARCH64_HPP 27 #define CPU_AARCH64_VM_GLOBALS_AARCH64_HPP 28 29 #include "utilities/globalDefinitions.hpp" 30 #include "utilities/macros.hpp" 31 32 // Sets the default values for platform dependent flags used by the runtime system. 33 // (see globals.hpp) 34 35 define_pd_global(bool, ConvertSleepToYield, true); 36 define_pd_global(bool, ShareVtableStubs, true); 37 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this 38 39 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks 40 define_pd_global(bool, TrapBasedNullChecks, false); 41 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast 42 43 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't 44 // assign a different value for C2 without touching a number of files. Use 45 // #ifdef to minimize the change as it's late in Mantis. -- FIXME. 46 // c1 doesn't have this problem because the fix to 4858033 assures us 47 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns 48 // the uep and the vep doesn't get real alignment but just slops on by 49 // only assured that the entry instruction meets the 5 byte size requirement. 50 #ifdef COMPILER2 51 define_pd_global(intx, CodeEntryAlignment, 64); 52 #else 53 define_pd_global(intx, CodeEntryAlignment, 16); 54 #endif // COMPILER2 55 define_pd_global(intx, OptoLoopAlignment, 16); 56 define_pd_global(intx, InlineFrequencyCount, 100); 57 58 #define DEFAULT_STACK_YELLOW_PAGES (2) 59 #define DEFAULT_STACK_RED_PAGES (1) 60 #define DEFAULT_STACK_SHADOW_PAGES (4 DEBUG_ONLY(+5)) 61 #define DEFAULT_STACK_RESERVED_PAGES (0) 62 63 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES 64 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES 65 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES 66 #define MIN_STACK_RESERVED_PAGES (0) 67 68 define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES); 69 define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES); 70 define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES); 71 define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES); 72 73 define_pd_global(bool, RewriteBytecodes, true); 74 define_pd_global(bool, RewriteFrequentPairs, true); 75 76 define_pd_global(bool, UseMembar, true); 77 78 define_pd_global(bool, PreserveFramePointer, false); 79 80 // GC Ergo Flags 81 define_pd_global(uintx, CMSYoungGenPerWorker, 64*M); // default max size of CMS young gen, per GC worker thread 82 83 define_pd_global(uintx, TypeProfileLevel, 111); 84 85 // avoid biased locking while we are bootstrapping the aarch64 build 86 define_pd_global(bool, UseBiasedLocking, false); 87 88 #if defined(COMPILER1) || defined(COMPILER2) 89 define_pd_global(intx, InlineSmallCode, 1000); 90 #endif 91 92 #ifdef BUILTIN_SIM 93 #define UseBuiltinSim true 94 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint) \ 95 \ 96 product(bool, NotifySimulator, UseBuiltinSim, \ 97 "tell the AArch64 sim where we are in method code") \ 98 \ 99 product(bool, UseSimulatorCache, false, \ 100 "tell sim to cache memory updates until exclusive op occurs") \ 101 \ 102 product(bool, DisableBCCheck, true, \ 103 "tell sim not to invoke bccheck callback") \ 104 \ 105 product(bool, NearCpool, true, \ 106 "constant pool is close to instructions") \ 107 \ 108 product(bool, UseBarriersForVolatile, false, \ 109 "Use memory barriers to implement volatile accesses") \ 110 \ 111 product(bool, UseCRC32, false, \ 112 "Use CRC32 instructions for CRC32 computation") \ 113 114 // Don't attempt to use Neon on builtin sim until builtin sim supports it 115 #define UseCRC32 false 116 117 #else 118 #define UseBuiltinSim false 119 #define NotifySimulator false 120 #define UseSimulatorCache false 121 #define DisableBCCheck true 122 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint) \ 123 \ 124 product(bool, NearCpool, true, \ 125 "constant pool is close to instructions") \ 126 \ 127 product(bool, UseBarriersForVolatile, false, \ 128 "Use memory barriers to implement volatile accesses") \ 129 product(bool, UseNeon, false, \ 130 "Use Neon for CRC32 computation") \ 131 product(bool, UseCRC32, false, \ 132 "Use CRC32 instructions for CRC32 computation") \ 133 product(bool, TraceTraps, false, "Trace all traps the signal handler") 134 135 #endif 136 137 138 #endif // CPU_AARCH64_VM_GLOBALS_AARCH64_HPP