25 
  26 #ifndef CPU_PPC_VM_GLOBALS_PPC_HPP
  27 #define CPU_PPC_VM_GLOBALS_PPC_HPP
  28 
  29 #include "utilities/globalDefinitions.hpp"
  30 #include "utilities/macros.hpp"
  31 
  32 // Sets the default values for platform dependent flags used by the runtime system.
  33 // (see globals.hpp)
  34 
  35 define_pd_global(bool, ShareVtableStubs,      false); // Improves performance markedly for mtrt and compress.
  36 define_pd_global(bool, NeedsDeoptSuspend,     false); // Only register window machines need this.
  37 
  38 
  39 define_pd_global(bool, ImplicitNullChecks,    true);  // Generate code for implicit null checks.
  40 define_pd_global(bool, TrapBasedNullChecks,   true);
  41 define_pd_global(bool, UncommonNullCast,      true);  // Uncommon-trap NULLs passed to check cast.
  42 
  43 #define DEFAULT_STACK_YELLOW_PAGES (2)
  44 #define DEFAULT_STACK_RED_PAGES (1)



  45 #define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+2))
  46 #define DEFAULT_STACK_RESERVED_PAGES (1)
  47 
  48 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
  49 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
  50 #define MIN_STACK_SHADOW_PAGES (3 DEBUG_ONLY(+1))
  51 #define MIN_STACK_RESERVED_PAGES (0)
  52 
  53 define_pd_global(intx, StackYellowPages,      DEFAULT_STACK_YELLOW_PAGES);
  54 define_pd_global(intx, StackRedPages,         DEFAULT_STACK_RED_PAGES);
  55 define_pd_global(intx, StackShadowPages,      DEFAULT_STACK_SHADOW_PAGES);
  56 define_pd_global(intx, StackReservedPages,    DEFAULT_STACK_RESERVED_PAGES);
  57 
  58 // Use large code-entry alignment.
  59 define_pd_global(uintx, CodeCacheSegmentSize,  128);
  60 define_pd_global(intx,  CodeEntryAlignment,    128);
  61 define_pd_global(intx,  OptoLoopAlignment,     16);
  62 define_pd_global(intx,  InlineFrequencyCount,  100);
  63 define_pd_global(intx,  InlineSmallCode,       1500);
  64 

  25 
  26 #ifndef CPU_PPC_VM_GLOBALS_PPC_HPP
  27 #define CPU_PPC_VM_GLOBALS_PPC_HPP
  28 
  29 #include "utilities/globalDefinitions.hpp"
  30 #include "utilities/macros.hpp"
  31 
  32 // Sets the default values for platform dependent flags used by the runtime system.
  33 // (see globals.hpp)
  34 
  35 define_pd_global(bool, ShareVtableStubs,      false); // Improves performance markedly for mtrt and compress.
  36 define_pd_global(bool, NeedsDeoptSuspend,     false); // Only register window machines need this.
  37 
  38 
  39 define_pd_global(bool, ImplicitNullChecks,    true);  // Generate code for implicit null checks.
  40 define_pd_global(bool, TrapBasedNullChecks,   true);
  41 define_pd_global(bool, UncommonNullCast,      true);  // Uncommon-trap NULLs passed to check cast.
  42 
  43 #define DEFAULT_STACK_YELLOW_PAGES (2)
  44 #define DEFAULT_STACK_RED_PAGES (1)
  45 // Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the
  46 // stack if compiled for unix and LP64. To pass stack overflow tests we need
  47 // 20 shadow pages.
  48 #define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+2))
  49 #define DEFAULT_STACK_RESERVED_PAGES (1)
  50 
  51 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
  52 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
  53 #define MIN_STACK_SHADOW_PAGES (3 DEBUG_ONLY(+1))
  54 #define MIN_STACK_RESERVED_PAGES (0)
  55 
  56 define_pd_global(intx, StackYellowPages,      DEFAULT_STACK_YELLOW_PAGES);
  57 define_pd_global(intx, StackRedPages,         DEFAULT_STACK_RED_PAGES);
  58 define_pd_global(intx, StackShadowPages,      DEFAULT_STACK_SHADOW_PAGES);
  59 define_pd_global(intx, StackReservedPages,    DEFAULT_STACK_RESERVED_PAGES);
  60 
  61 // Use large code-entry alignment.
  62 define_pd_global(uintx, CodeCacheSegmentSize,  128);
  63 define_pd_global(intx,  CodeEntryAlignment,    128);
  64 define_pd_global(intx,  OptoLoopAlignment,     16);
  65 define_pd_global(intx,  InlineFrequencyCount,  100);
  66 define_pd_global(intx,  InlineSmallCode,       1500);
  67