/*

 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. 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.

 *

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 */

#ifndef CPU_X86_VM_GLOBALS_X86_HPP

#define CPU_X86_VM_GLOBALS_X86_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, ConvertSleepToYield,      true);

define_pd_global(bool, ShareVtableStubs,         true);

define_pd_global(bool, CountInterpCalls,         true);

define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this

define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks

define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast

// See 4827828 for this change. There is no globals_core_i486.hpp. I can't

// assign a different value for C2 without touching a number of files. Use

// #ifdef to minimize the change as it's late in Mantis. -- FIXME.

// c1 doesn't have this problem because the fix to 4858033 assures us

// the the vep is aligned at CodeEntryAlignment whereas c2 only aligns

// the uep and the vep doesn't get real alignment but just slops on by

// only assured that the entry instruction meets the 5 byte size requirement.

#ifdef COMPILER2

define_pd_global(intx, CodeEntryAlignment,       32);

#else

define_pd_global(intx, CodeEntryAlignment,       16);

#endif // COMPILER2

define_pd_global(intx, OptoLoopAlignment,        16);

define_pd_global(intx, InlineFrequencyCount,     100);

define_pd_global(intx, InlineSmallCode,          1000);

define_pd_global(intx, StackYellowPages, 2);

define_pd_global(intx, StackRedPages, 1);

#ifdef AMD64

// Very large C++ stack frames using solaris-amd64 optimized builds

// due to lack of optimization caused by C++ compiler bugs

#else

define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+5));

#endif // AMD64

define_pd_global(intx, PreInflateSpin,           10);

define_pd_global(bool, RewriteBytecodes,     true);

define_pd_global(bool, RewriteFrequentPairs, true);

#ifdef _ALLBSD_SOURCE

define_pd_global(bool, UseMembar,            true);

#else

define_pd_global(bool, UseMembar,            false);

#endif

// GC Ergo Flags

define_pd_global(intx, CMSYoungGenPerWorker, 64*M);  // default max size of CMS young gen, per GC worker thread

#endif // CPU_X86_VM_GLOBALS_X86_HPP