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/*
* Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2020, 2022, Huawei Technologies Co., Ltd. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef CPU_RISCV_GLOBALS_RISCV_HPP
#define CPU_RISCV_GLOBALS_RISCV_HPP
#include "utilities/globalDefinitions.hpp"
#include "utilities/macros.hpp"
// Sets the default values for platform dependent flags used by the runtime system.
// (see globals.hpp)
define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
define_pd_global(bool, TrapBasedNullChecks, false);
define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast
define_pd_global(uintx, CodeCacheSegmentSize, 64 COMPILER1_AND_COMPILER2_PRESENT(+64)); // Tiered compilation has large code-entry alignment.
define_pd_global(intx, CodeEntryAlignment, 64);
define_pd_global(intx, OptoLoopAlignment, 16);
#define DEFAULT_STACK_YELLOW_PAGES (2)
#define DEFAULT_STACK_RED_PAGES (1)
// Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the
// stack if compiled for unix and LP64. To pass stack overflow tests we need
// 20 shadow pages.
#define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+5))
#define DEFAULT_STACK_RESERVED_PAGES (1)
#define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
#define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
#define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES
#define MIN_STACK_RESERVED_PAGES (0)
define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES);
define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES);
define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES);
define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES);
define_pd_global(bool, VMContinuations, true);
define_pd_global(bool, RewriteBytecodes, true);
define_pd_global(bool, RewriteFrequentPairs, true);
define_pd_global(bool, PreserveFramePointer, false);
define_pd_global(uintx, TypeProfileLevel, 111);
define_pd_global(bool, CompactStrings, true);
// Clear short arrays bigger than one word in an arch-specific way
define_pd_global(intx, InitArrayShortSize, BytesPerLong);
define_pd_global(intx, InlineSmallCode, 1000);
#define ARCH_FLAGS(develop, \
product, \
notproduct, \
range, \
constraint) \
\
product(bool, NearCpool, true, \
"constant pool is close to instructions") \
product(bool, UseBlockZeroing, false, \
"Use Zicboz for block zeroing") \
product(intx, BlockZeroingLowLimit, 256, \
"Minimum size in bytes when block zeroing will be used") \
range(1, max_jint) \
product(intx, CacheLineSize, DEFAULT_CACHE_LINE_SIZE, \
"Size in bytes of a CPU cache line") \
range(wordSize, max_jint) \
product(bool, TraceTraps, false, "Trace all traps the signal handler") \
/* For now we're going to be safe and add the I/O bits to userspace fences. */ \
product(bool, UseConservativeFence, true, \
"Extend i for r and o for w in the pred/succ flags of fence") \
product(bool, AvoidUnalignedAccesses, true, \
"Avoid generating unaligned memory accesses") \
product(bool, UseRVA20U64, true, "Use RVA20U64 profile") \
product(bool, UseRVC, false, "Use RVC instructions") \
product(bool, UseRVA22U64, false, EXPERIMENTAL, "Use RVA22U64 profile") \
product(bool, UseRVV, false, EXPERIMENTAL, "Use RVV instructions") \
product(bool, UseZba, false, EXPERIMENTAL, "Use Zba instructions") \
product(bool, UseZbb, false, EXPERIMENTAL, "Use Zbb instructions") \
product(bool, UseZbs, false, EXPERIMENTAL, "Use Zbs instructions") \
product(bool, UseZic64b, false, EXPERIMENTAL, "Use Zic64b instructions") \
product(bool, UseZicbom, false, EXPERIMENTAL, "Use Zicbom instructions") \
product(bool, UseZicbop, false, EXPERIMENTAL, "Use Zicbop instructions") \
product(bool, UseZicboz, false, EXPERIMENTAL, "Use Zicboz instructions") \
product(bool, UseRVVForBigIntegerShiftIntrinsics, true, \
"Use RVV instructions for left/right shift of BigInteger")
#endif // CPU_RISCV_GLOBALS_RISCV_HPP
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