32 public:

    32  public:

    33   /**

    33   class Data {

    34    * Tag bits used by lookupKlassInPool to distinguish the types in Java.

    34     friend class JVMCIVMStructs;

    35    */

    35 

    36   enum Tags {

    36    private:

    37     KLASS_TAG = 0x0,

    37     static int InstanceKlass_vtable_start_offset;

    38     SYMBOL_TAG = 0x1

    38     static int InstanceKlass_vtable_length_offset;

    39 

    40     static int Method_extra_stack_entries;

    41 

    42     static address SharedRuntime_ic_miss_stub;

    43     static address SharedRuntime_handle_wrong_method_stub;

    44     static address SharedRuntime_deopt_blob_unpack;

    45     static address SharedRuntime_deopt_blob_uncommon_trap;

    46 

    47     static size_t ThreadLocalAllocBuffer_alignment_reserve;

    48 

    49     static CollectedHeap* Universe_collectedHeap;

    50     static int Universe_base_vtable_size;

    51     static address Universe_narrow_oop_base;

    52     static int Universe_narrow_oop_shift;

    53     static address Universe_narrow_klass_base;

    54     static int Universe_narrow_klass_shift;

    55     static uintptr_t Universe_verify_oop_mask;

    56     static uintptr_t Universe_verify_oop_bits;

    57     static void* Universe_non_oop_bits;

    58 

    59     static bool _supports_inline_contig_alloc;

    60     static HeapWord** _heap_end_addr;

    61     static HeapWord** _heap_top_addr;

    62 

    63     static jbyte* cardtable_start_address;

    64     static int cardtable_shift;

    65 

    66    public:

    67     static void initialize();

    41   // FIXME This is only temporary until the GC code is changed.

    70  public:

    42   static bool _supports_inline_contig_alloc;

    43   static HeapWord** _heap_end_addr;

    44   static HeapWord** _heap_top_addr;

    45 

    46   static intptr_t tag_pointer(Klass* klass) {

    47     return ((intptr_t) klass) | KLASS_TAG;

    48   }

    49 

    50   static intptr_t tag_pointer(Symbol* symbol) {

    51     return ((intptr_t) symbol) | SYMBOL_TAG;

    52   }

    53