1 /* 2 * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. 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_RISCV_GLOBALS_RISCV_HPP 27 #define CPU_RISCV_GLOBALS_RISCV_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, ImplicitNullChecks, true); // Generate code for implicit null checks 36 define_pd_global(bool, TrapBasedNullChecks, false); 37 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap nulls past to check cast 38 39 define_pd_global(bool, DelayCompilerStubsGeneration, COMPILER2_PRESENT(true) NOT_COMPILER2(false)); 40 41 define_pd_global(size_t, CodeCacheSegmentSize, 64 COMPILER1_AND_COMPILER2_PRESENT(+64)); // Tiered compilation has large code-entry alignment. 42 define_pd_global(uint, CodeEntryAlignment, 64); 43 define_pd_global(intx, OptoLoopAlignment, 16); 44 45 #define DEFAULT_STACK_YELLOW_PAGES (2) 46 #define DEFAULT_STACK_RED_PAGES (1) 47 // Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the 48 // stack if compiled for unix and LP64. To pass stack overflow tests we need 49 // 20 shadow pages. 50 #define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+5)) 51 #define DEFAULT_STACK_RESERVED_PAGES (1) 52 53 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES 54 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES 55 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES 56 #define MIN_STACK_RESERVED_PAGES (0) 57 58 define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES); 59 define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES); 60 define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES); 61 define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES); 62 63 define_pd_global(bool, VMContinuations, true); 64 65 define_pd_global(bool, RewriteBytecodes, true); 66 define_pd_global(bool, RewriteFrequentPairs, true); 67 68 define_pd_global(bool, PreserveFramePointer, false); 69 70 define_pd_global(uintx, TypeProfileLevel, 111); 71 72 define_pd_global(bool, CompactStrings, true); 73 74 // Clear short arrays bigger than one word in an arch-specific way 75 define_pd_global(intx, InitArrayShortSize, BytesPerLong); 76 77 define_pd_global(intx, InlineSmallCode, 1000); 78 79 define_pd_global(bool, InlineTypePassFieldsAsArgs, false); 80 define_pd_global(bool, InlineTypeReturnedAsFields, false); 81 82 #define ARCH_FLAGS(develop, \ 83 product, \ 84 range, \ 85 constraint) \ 86 \ 87 product(bool, UseBlockZeroing, false, \ 88 "Use Zicboz for block zeroing") \ 89 product(intx, BlockZeroingLowLimit, 256, \ 90 "Minimum size in bytes when block zeroing will be used") \ 91 range(1, max_jint) \ 92 product(intx, CacheLineSize, DEFAULT_CACHE_LINE_SIZE, \ 93 "Size in bytes of a CPU cache line") \ 94 range(wordSize, max_jint) \ 95 product(bool, TraceTraps, false, "Trace all traps the signal handler") \ 96 product(bool, UseConservativeFence, false, \ 97 "Extend i for r and o for w in the pred/succ flags of fence") \ 98 product(bool, AvoidUnalignedAccesses, true, \ 99 "Avoid generating unaligned memory accesses") \ 100 product(bool, UseRVA20U64, true, "Use RVA20U64 profile") \ 101 product(bool, UseRVA22U64, false, EXPERIMENTAL, "Use RVA22U64 profile") \ 102 product(bool, UseRVA23U64, false, EXPERIMENTAL, "Use RVA23U64 profile") \ 103 product(bool, UseRVC, false, DIAGNOSTIC, "Use RVC instructions") \ 104 product(bool, UseRVV, false, DIAGNOSTIC, "Use RVV instructions") \ 105 product(bool, UseZba, false, DIAGNOSTIC, "Use Zba instructions") \ 106 product(bool, UseZbb, false, DIAGNOSTIC, "Use Zbb instructions") \ 107 product(bool, UseZbkb, false, EXPERIMENTAL, "Use Zbkb instructions") \ 108 product(bool, UseZbs, false, DIAGNOSTIC, "Use Zbs instructions") \ 109 product(bool, UseZfa, false, DIAGNOSTIC, "Use Zfa instructions") \ 110 product(bool, UseZfh, false, DIAGNOSTIC, "Use Zfh instructions") \ 111 product(bool, UseZfhmin, false, DIAGNOSTIC, "Use Zfhmin instructions") \ 112 product(bool, UseZacas, false, EXPERIMENTAL, "Use Zacas instructions") \ 113 product(bool, UseZabha, false, EXPERIMENTAL, "Use UseZabha instructions") \ 114 product(bool, UseZcb, false, EXPERIMENTAL, "Use Zcb instructions") \ 115 product(bool, UseZic64b, false, EXPERIMENTAL, "Use Zic64b instructions") \ 116 product(bool, UseZicbom, false, EXPERIMENTAL, "Use Zicbom instructions") \ 117 product(bool, UseZicbop, false, EXPERIMENTAL, "Use Zicbop instructions") \ 118 product(bool, UseZicboz, false, EXPERIMENTAL, "Use Zicboz instructions") \ 119 product(bool, UseZicond, false, DIAGNOSTIC, "Use Zicond instructions") \ 120 product(bool, UseZihintpause, false, EXPERIMENTAL, \ 121 "Use Zihintpause instructions") \ 122 product(bool, UseZtso, false, EXPERIMENTAL, "Assume Ztso memory model") \ 123 product(bool, UseZvbb, false, DIAGNOSTIC, "Use Zvbb instructions") \ 124 product(bool, UseZvbc, false, DIAGNOSTIC, "Use Zvbc instructions") \ 125 product(bool, UseZvfh, false, DIAGNOSTIC, "Use Zvfh instructions") \ 126 product(bool, UseZvfhmin, false, DIAGNOSTIC, "Use Zvfhmin instructions") \ 127 product(bool, UseZvkg, false, DIAGNOSTIC, "Use Zvkg instructions") \ 128 product(bool, UseZvkn, false, DIAGNOSTIC, \ 129 "Use Zvkn group extension, Zvkned, Zvknhb, Zvkb, Zvkt") \ 130 product(bool, UseCtxFencei, false, EXPERIMENTAL, \ 131 "Use PR_RISCV_CTX_SW_FENCEI_ON to avoid explicit icache flush") 132 133 #endif // CPU_RISCV_GLOBALS_RISCV_HPP --- EOF ---