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, ShareVtableStubs,         true);
  35 define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this
  36 
  37 define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
  38 define_pd_global(bool, TrapBasedNullChecks,      false); // Not needed on x86.
  39 define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs passed to check cast
  40 
  41 define_pd_global(uintx, CodeCacheSegmentSize,    64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment.
  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 #if defined(COMPILER2) || INCLUDE_JVMCI
  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 DEFAULT_STACK_YELLOW_PAGES (NOT_WINDOWS(2) WINDOWS_ONLY(3))
  59 #define DEFAULT_STACK_RED_PAGES (1)
  60 #define DEFAULT_STACK_RESERVED_PAGES (NOT_WINDOWS(1) WINDOWS_ONLY(0))
  61 
  62 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
  63 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
  64 #define MIN_STACK_RESERVED_PAGES (0)
  65 
  66 #ifdef _LP64
  67 // Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the
  68 // stack if compiled for unix and LP64. To pass stack overflow tests we need
  69 // 20 shadow pages.
  70 #define DEFAULT_STACK_SHADOW_PAGES (NOT_WIN64(20) WIN64_ONLY(7) DEBUG_ONLY(+2))
  71 // For those clients that do not use write socket, we allow
  72 // the min range value to be below that of the default
  73 #define MIN_STACK_SHADOW_PAGES (NOT_WIN64(10) WIN64_ONLY(7) DEBUG_ONLY(+2))

  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, ShareVtableStubs,         true);
  35 define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this
  36 
  37 define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
  38 define_pd_global(bool, TrapBasedNullChecks,      false); // Not needed on x86.
  39 define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs passed to check cast
  40 
  41 define_pd_global(uintx, CodeCacheSegmentSize,    64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment.
  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 #if COMPILER2_OR_JVMCI
  50 define_pd_global(intx, CodeEntryAlignment,       32);
  51 #else
  52 define_pd_global(intx, CodeEntryAlignment,       16);
  53 #endif // COMPILER2_OR_JVMCI
  54 define_pd_global(intx, OptoLoopAlignment,        16);
  55 define_pd_global(intx, InlineFrequencyCount,     100);
  56 define_pd_global(intx, InlineSmallCode,          1000);
  57 
  58 #define DEFAULT_STACK_YELLOW_PAGES (NOT_WINDOWS(2) WINDOWS_ONLY(3))
  59 #define DEFAULT_STACK_RED_PAGES (1)
  60 #define DEFAULT_STACK_RESERVED_PAGES (NOT_WINDOWS(1) WINDOWS_ONLY(0))
  61 
  62 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
  63 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
  64 #define MIN_STACK_RESERVED_PAGES (0)
  65 
  66 #ifdef _LP64
  67 // Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the
  68 // stack if compiled for unix and LP64. To pass stack overflow tests we need
  69 // 20 shadow pages.
  70 #define DEFAULT_STACK_SHADOW_PAGES (NOT_WIN64(20) WIN64_ONLY(7) DEBUG_ONLY(+2))
  71 // For those clients that do not use write socket, we allow
  72 // the min range value to be below that of the default
  73 #define MIN_STACK_SHADOW_PAGES (NOT_WIN64(10) WIN64_ONLY(7) DEBUG_ONLY(+2))