1 /* 2 * Copyright (c) 2013, Red Hat Inc. 3 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. 4 * All rights reserved. 5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 6 * 7 * This code is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 only, as 9 * published by the Free Software Foundation. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 * 25 */ 26 27 #ifndef CPU_AARCH64_VM_GLOBALS_AARCH64_HPP 28 #define CPU_AARCH64_VM_GLOBALS_AARCH64_HPP 29 30 #include "utilities/globalDefinitions.hpp" 31 #include "utilities/macros.hpp" 32 33 // Sets the default values for platform dependent flags used by the runtime system. 34 // (see globals.hpp) 35 36 define_pd_global(bool, ConvertSleepToYield, true); 37 define_pd_global(bool, ShareVtableStubs, true); 38 define_pd_global(bool, CountInterpCalls, true); 39 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this 40 41 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks 42 define_pd_global(bool, TrapBasedNullChecks, false); 43 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast 44 45 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't 46 // assign a different value for C2 without touching a number of files. Use 47 // #ifdef to minimize the change as it's late in Mantis. -- FIXME. 48 // c1 doesn't have this problem because the fix to 4858033 assures us 49 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns 50 // the uep and the vep doesn't get real alignment but just slops on by 51 // only assured that the entry instruction meets the 5 byte size requirement. 52 define_pd_global(intx, CodeEntryAlignment, 64); 53 define_pd_global(intx, OptoLoopAlignment, 16); 54 define_pd_global(intx, InlineFrequencyCount, 100); 55 56 define_pd_global(intx, StackYellowPages, 2); 57 define_pd_global(intx, StackRedPages, 1); 58 59 define_pd_global(intx, StackShadowPages, 4 DEBUG_ONLY(+5)); 60 61 define_pd_global(intx, PreInflateSpin, 10); 62 63 define_pd_global(bool, RewriteBytecodes, true); 64 define_pd_global(bool, RewriteFrequentPairs, true); 65 66 define_pd_global(bool, UseMembar, true); 67 68 define_pd_global(bool, PreserveFramePointer, false); 69 70 // GC Ergo Flags 71 define_pd_global(uintx, CMSYoungGenPerWorker, 64*M); // default max size of CMS young gen, per GC worker thread 72 73 define_pd_global(uintx, TypeProfileLevel, 111); 74 75 #if defined(COMPILER1) || defined(COMPILER2) 76 define_pd_global(intx, InlineSmallCode, 1000); 77 #endif 78 79 #ifdef BUILTIN_SIM 80 #define UseBuiltinSim true 81 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \ 82 \ 83 product(bool, NotifySimulator, UseBuiltinSim, \ 84 "tell the AArch64 sim where we are in method code") \ 85 \ 86 product(bool, UseSimulatorCache, false, \ 87 "tell sim to cache memory updates until exclusive op occurs") \ 88 \ 89 product(bool, DisableBCCheck, true, \ 90 "tell sim not to invoke bccheck callback") \ 91 \ 92 product(bool, NearCpool, true, \ 93 "constant pool is close to instructions") \ 94 \ 95 product(bool, UseBarriersForVolatile, false, \ 96 "Use memory barriers to implement volatile accesses") \ 97 \ 98 product(bool, UseCRC32, false, \ 99 "Use CRC32 instructions for CRC32 computation") \ 100 product(bool, UseLSE, false, \ 101 "Use LSE instructions") \ 102 product(bool, TraceTraps, false, "Trace all traps the signal handler") 103 104 // Don't attempt to use Neon on builtin sim until builtin sim supports it 105 #define UseNeon false 106 #define UseSIMDForMemoryOps false 107 #define AvoidUnalignedAcesses false 108 109 #else 110 #define UseBuiltinSim false 111 #define NotifySimulator false 112 #define UseSimulatorCache false 113 #define DisableBCCheck true 114 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \ 115 \ 116 product(bool, NearCpool, true, \ 117 "constant pool is close to instructions") \ 118 \ 119 product(bool, UseBarriersForVolatile, false, \ 120 "Use memory barriers to implement volatile accesses") \ 121 product(bool, UseNeon, false, \ 122 "Use Neon for CRC32 computation") \ 123 product(bool, UseCRC32, false, \ 124 "Use CRC32 instructions for CRC32 computation") \ 125 product(bool, UseLSE, false, \ 126 "Use LSE instructions") \ 127 product(bool, UseSIMDForMemoryOps, false, \ 128 "Use SIMD instructions in generated memory move code") \ 129 product(bool, AvoidUnalignedAccesses, false, \ 130 "Avoid generating unaligned memory accesses") \ 131 product(bool, UseBlockZeroing, true, \ 132 "Use DC ZVA for block zeroing") \ 133 product(intx, BlockZeroingLowLimit, 256, \ 134 "Minimum size in bytes when block zeroing will be used") \ 135 product(bool, TraceTraps, false, "Trace all traps the signal handler") 136 137 #endif 138 139 #endif // CPU_AARCH64_VM_GLOBALS_AARCH64_HPP