20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_X86_VM_GLOBALS_X86_HPP
  26 #define CPU_X86_VM_GLOBALS_X86_HPP
  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 // Sets the default values for platform dependent flags used by the runtime system.
  32 // (see globals.hpp)
  33 
  34 define_pd_global(bool, ConvertSleepToYield,      true);
  35 define_pd_global(bool, ShareVtableStubs,         true);
  36 define_pd_global(bool, CountInterpCalls,         true);
  37 define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this
  38 
  39 define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
  40 define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast

  41 
  42 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
  43 // assign a different value for C2 without touching a number of files. Use
  44 // #ifdef to minimize the change as it's late in Mantis. -- FIXME.
  45 // c1 doesn't have this problem because the fix to 4858033 assures us
  46 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
  47 // the uep and the vep doesn't get real alignment but just slops on by
  48 // only assured that the entry instruction meets the 5 byte size requirement.
  49 #ifdef COMPILER2
  50 define_pd_global(intx, CodeEntryAlignment,       32);
  51 #else
  52 define_pd_global(intx, CodeEntryAlignment,       16);
  53 #endif // COMPILER2
  54 define_pd_global(intx, OptoLoopAlignment,        16);
  55 define_pd_global(intx, InlineFrequencyCount,     100);
  56 define_pd_global(intx, InlineSmallCode,          1000);
  57 
  58 define_pd_global(intx, StackYellowPages, NOT_WINDOWS(2) WINDOWS_ONLY(3));
  59 define_pd_global(intx, StackRedPages, 1);
  60 #ifdef AMD64

  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_X86_VM_GLOBALS_X86_HPP
  26 #define CPU_X86_VM_GLOBALS_X86_HPP
  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 // Sets the default values for platform dependent flags used by the runtime system.
  32 // (see globals.hpp)
  33 
  34 define_pd_global(bool, ConvertSleepToYield,      true);
  35 define_pd_global(bool, ShareVtableStubs,         true);
  36 define_pd_global(bool, CountInterpCalls,         true);
  37 define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this
  38 
  39 define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
  40 define_pd_global(bool, TrapBasedNullChecks,      false); // Not needed on x86.
  41 define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs passed to check cast
  42 
  43 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
  44 // assign a different value for C2 without touching a number of files. Use
  45 // #ifdef to minimize the change as it's late in Mantis. -- FIXME.
  46 // c1 doesn't have this problem because the fix to 4858033 assures us
  47 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
  48 // the uep and the vep doesn't get real alignment but just slops on by
  49 // only assured that the entry instruction meets the 5 byte size requirement.
  50 #ifdef COMPILER2
  51 define_pd_global(intx, CodeEntryAlignment,       32);
  52 #else
  53 define_pd_global(intx, CodeEntryAlignment,       16);
  54 #endif // COMPILER2
  55 define_pd_global(intx, OptoLoopAlignment,        16);
  56 define_pd_global(intx, InlineFrequencyCount,     100);
  57 define_pd_global(intx, InlineSmallCode,          1000);
  58 
  59 define_pd_global(intx, StackYellowPages, NOT_WINDOWS(2) WINDOWS_ONLY(3));
  60 define_pd_global(intx, StackRedPages, 1);
  61 #ifdef AMD64