/* * Copyright (c) 2002, 2020, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012, 2018 SAP SE. 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_PPC_GLOBALS_PPC_HPP #define CPU_PPC_GLOBALS_PPC_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, true); define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast. #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(+2)) #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 (3 DEBUG_ONLY(+1)) #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); // Use large code-entry alignment. define_pd_global(uintx, CodeCacheSegmentSize, 128); define_pd_global(intx, CodeEntryAlignment, 128); define_pd_global(intx, OptoLoopAlignment, 16); define_pd_global(intx, InlineFrequencyCount, 100); define_pd_global(intx, InlineSmallCode, 1500); // Flags for template interpreter. 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); // 2x unrolled loop is shorter with more than 9 HeapWords. define_pd_global(intx, InitArrayShortSize, 9*BytesPerLong); // Platform dependent flag handling: flags only defined on this platform. #include "runtime/flags/jvmFlag.hpp" PRODUCT_FLAG(uintx, PowerArchitecturePPC64, 0, JVMFlag::DEFAULT, "CPU Version: x for PowerX. Currently recognizes Power5 to " "Power8. Default is 0. Newer CPUs will be recognized as Power8."); PRODUCT_FLAG(bool, SuperwordUseVSX, false, JVMFlag::DEFAULT, "Use Power8 VSX instructions for superword optimization."); // Reoptimize code-sequences of calls at runtime, e.g. replace an // indirect call by a direct call. PRODUCT_FLAG(bool, ReoptimizeCallSequences, true, JVMFlag::DEFAULT, "Reoptimize code-sequences of calls at runtime."); // Power 8: Configure Data Stream Control Register. PRODUCT_FLAG(uint64_t, DSCR_PPC64, (uintx)-1, JVMFlag::DEFAULT, "Power8 or later: Specify encoded value for Data Stream Control " "Register"); PRODUCT_FLAG(uint64_t, DSCR_DPFD_PPC64, 8, JVMFlag::DEFAULT, "Power8 or later: DPFD (default prefetch depth) value of the " "Data Stream Control Register." " 0: hardware default, 1: none, 2-7: min-max, 8: don't touch"); PRODUCT_FLAG(uint64_t, DSCR_URG_PPC64, 8, JVMFlag::DEFAULT, "Power8 or later: URG (depth attainment urgency) value of the " "Data Stream Control Register." " 0: hardware default, 1: none, 2-7: min-max, 8: don't touch"); PRODUCT_FLAG(bool, UseLoadInstructionsForStackBangingPPC64, false, JVMFlag::DEFAULT, "Use load instructions for stack banging."); // special instructions PRODUCT_FLAG(bool, UseCountLeadingZerosInstructionsPPC64, true, JVMFlag::DEFAULT, "Use count leading zeros instructions."); PRODUCT_FLAG(bool, UseCountTrailingZerosInstructionsPPC64, false, JVMFlag::DEFAULT, "Use count trailing zeros instructions."); PRODUCT_FLAG(bool, UseExtendedLoadAndReserveInstructionsPPC64, false, JVMFlag::DEFAULT, "Use extended versions of load-and-reserve instructions."); PRODUCT_FLAG(bool, UseRotateAndMaskInstructionsPPC64, true, JVMFlag::DEFAULT, "Use rotate and mask instructions."); PRODUCT_FLAG(bool, UseStaticBranchPredictionInCompareAndSwapPPC64, true, JVMFlag::DEFAULT, "Use static branch prediction hints in CAS operations."); PRODUCT_FLAG(bool, UseStaticBranchPredictionForUncommonPathsPPC64, false, JVMFlag::DEFAULT, "Use static branch prediction hints for uncommon paths."); PRODUCT_FLAG(bool, UsePower6SchedulerPPC64, false, JVMFlag::DEFAULT, "Use Power6 Scheduler."); PRODUCT_FLAG(bool, InsertEndGroupPPC64, false, JVMFlag::DEFAULT, "Insert EndGroup instructions to optimize for Power6."); // Trap based checks. // Trap based checks use the ppc trap instructions to check certain // conditions. This instruction raises a SIGTRAP caught by the // exception handler of the VM. PRODUCT_FLAG(bool, UseSIGTRAP, true, JVMFlag::DEFAULT, "Allow trap instructions that make use of SIGTRAP. Use this to " "switch off all optimizations requiring SIGTRAP."); PRODUCT_FLAG(bool, TrapBasedICMissChecks, true, JVMFlag::DEFAULT, "Raise and handle SIGTRAP if inline cache miss detected."); PRODUCT_FLAG(bool, TrapBasedNotEntrantChecks, true, JVMFlag::DEFAULT, "Raise and handle SIGTRAP if calling not entrant or zombie" " method."); PRODUCT_FLAG(bool, TraceTraps, false, JVMFlag::DEFAULT, "Trace all traps the signal handler" "handles."); PRODUCT_FLAG(bool, ZapMemory, false, JVMFlag::DEFAULT, "Write 0x0101... to empty memory." " Use this to ease debugging."); // Use Restricted Transactional Memory for lock elision PRODUCT_FLAG(bool, UseRTMLocking, false, JVMFlag::DEFAULT, "Enable RTM lock eliding for inflated locks in compiled code"); PRODUCT_FLAG(bool, UseRTMForStackLocks, false, JVMFlag::EXPERIMENTAL, "Enable RTM lock eliding for stack locks in compiled code"); PRODUCT_FLAG(bool, UseRTMDeopt, false, JVMFlag::DEFAULT, "Perform deopt and recompilation based on RTM abort ratio"); PRODUCT_FLAG(int, RTMRetryCount, 5, JVMFlag::RANGE, "Number of RTM retries on lock abort or busy"); FLAG_RANGE( RTMRetryCount, 0, max_jint); PRODUCT_FLAG(int, RTMSpinLoopCount, 100, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE, "Spin count for lock to become free before RTM retry"); FLAG_RANGE( RTMSpinLoopCount, 0, 32767); PRODUCT_FLAG(int, RTMAbortThreshold, 1000, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE, "Calculate abort ratio after this number of aborts"); FLAG_RANGE( RTMAbortThreshold, 0, max_jint); PRODUCT_FLAG(int, RTMLockingThreshold, 10000, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE, "Lock count at which to do RTM lock eliding without " "abort ratio calculation"); FLAG_RANGE( RTMLockingThreshold, 0, max_jint); PRODUCT_FLAG(int, RTMAbortRatio, 50, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE, "Lock abort ratio at which to stop use RTM lock eliding"); FLAG_RANGE( RTMAbortRatio, 0, 100); PRODUCT_FLAG(int, RTMTotalCountIncrRate, 64, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE | JVMFlag::CONSTRAINT, "Increment total RTM attempted lock count once every n times"); FLAG_RANGE( RTMTotalCountIncrRate, 1, 32767); FLAG_CONSTRAINT( RTMTotalCountIncrRate, (void*)RTMTotalCountIncrRateConstraintFunc, JVMFlag::AfterErgo); PRODUCT_FLAG(intx, RTMLockingCalculationDelay, 0, JVMFlag::EXPERIMENTAL, "Number of milliseconds to wait before start calculating aborts " "for RTM locking"); PRODUCT_FLAG(bool, UseRTMXendForLockBusy, true, JVMFlag::EXPERIMENTAL, "Use RTM Xend instead of Xabort when lock busy"); #endif // CPU_PPC_GLOBALS_PPC_HPP