Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright 1999-2007 Sun Microsystems, Inc.  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.

  *

  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  *

  */

 class StubAssembler;

 // The Runtime1 holds all assembly stubs and VM

 // runtime routines needed by code code generated

 // by the Compiler1.

 #define RUNTIME1_STUBS(stub, last_entry) \

   stub(dtrace_object_alloc)          \

   stub(unwind_exception)             \

   stub(forward_exception)            \

   stub(throw_range_check_failed)       /* throws ArrayIndexOutOfBoundsException */ \

   stub(throw_index_exception)          /* throws IndexOutOfBoundsException */ \

   stub(throw_div0_exception)         \

   stub(throw_null_pointer_exception) \

   stub(register_finalizer)           \

   stub(new_instance)                 \

   stub(fast_new_instance)            \

   stub(fast_new_instance_init_check) \

   stub(new_type_array)               \

   stub(new_object_array)             \

   stub(new_multi_array)              \

   stub(handle_exception_nofpu)         /* optimized version that does not preserve fpu registers */ \

   stub(handle_exception)             \

   stub(throw_array_store_exception)  \

   stub(throw_class_cast_exception)   \

   stub(throw_incompatible_class_change_error)   \

   stub(slow_subtype_check)           \

   stub(monitorenter)                 \

   stub(monitorenter_nofpu)             /* optimized version that does not preserve fpu registers */ \

   stub(monitorexit)                  \

   stub(monitorexit_nofpu)              /* optimized version that does not preserve fpu registers */ \

   stub(access_field_patching)        \

   stub(load_klass_patching)          \

   stub(jvmti_exception_throw)        \

   stub(g1_pre_barrier_slow)          \

   stub(g1_post_barrier_slow)         \

   stub(fpu2long_stub)                \

   stub(counter_overflow)             \

   last_entry(number_of_ids)

 #define DECLARE_STUB_ID(x)       x ## _id ,

 #define DECLARE_LAST_STUB_ID(x)  x

 #define STUB_NAME(x)             #x " Runtime1 stub",

 #define LAST_STUB_NAME(x)        #x " Runtime1 stub"

 class Runtime1: public AllStatic {

   friend class VMStructs;

   friend class ArrayCopyStub;

  private:

   static int desired_max_code_buffer_size() {

     return (int) NMethodSizeLimit;  // default 256K or 512K

   }

   static int desired_max_constant_size() {

     return (int) NMethodSizeLimit / 10;  // about 25K

   }

   // Note: This buffers is allocated once at startup since allocation

   // for each compilation seems to be too expensive (at least on Intel

   // win32).

   static BufferBlob* _buffer_blob;

  public:

   enum StubID {

     RUNTIME1_STUBS(DECLARE_STUB_ID, DECLARE_LAST_STUB_ID)

   };

   // statistics

 #ifndef PRODUCT

   static int _resolve_invoke_cnt;

   static int _handle_wrong_method_cnt;

   static int _ic_miss_cnt;

   static int _generic_arraycopy_cnt;

   static int _primitive_arraycopy_cnt;

   static int _oop_arraycopy_cnt;

   static int _arraycopy_slowcase_cnt;

   static int _new_type_array_slowcase_cnt;

   static int _new_object_array_slowcase_cnt;

   static int _new_instance_slowcase_cnt;

   static int _new_multi_array_slowcase_cnt;

   static int _monitorenter_slowcase_cnt;

   static int _monitorexit_slowcase_cnt;

   static int _patch_code_slowcase_cnt;

   static int _throw_range_check_exception_count;

   static int _throw_index_exception_count;

   static int _throw_div0_exception_count;

   static int _throw_null_pointer_exception_count;

   static int _throw_class_cast_exception_count;

   static int _throw_incompatible_class_change_error_count;

   static int _throw_array_store_exception_count;

   static int _throw_count;

 #endif

  private:

   static bool      _is_initialized;

   static CodeBlob* _blobs[number_of_ids];

   static const char* _blob_names[];

   // stub generation

   static void generate_blob_for(StubID id);

   static OopMapSet* generate_code_for(StubID id, StubAssembler* masm);

   static OopMapSet* generate_exception_throw(StubAssembler* sasm, address target, bool has_argument);

   static void generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_maps, OopMap* oop_map, bool ignore_fpu_registers = false);

   static void generate_unwind_exception(StubAssembler *sasm);

   static OopMapSet* generate_patching(StubAssembler* sasm, address target);

   static OopMapSet* generate_stub_call(StubAssembler* sasm, Register result, address entry,

                                        Register arg1 = noreg, Register arg2 = noreg, Register arg3 = noreg);

   // runtime entry points

   static void new_instance    (JavaThread* thread, klassOopDesc* klass);

   static void new_type_array  (JavaThread* thread, klassOopDesc* klass, jint length);

   static void new_object_array(JavaThread* thread, klassOopDesc* klass, jint length);

   static void new_multi_array (JavaThread* thread, klassOopDesc* klass, int rank, jint* dims);

 #ifdef TIERED

   static void counter_overflow(JavaThread* thread, int bci);

 #endif // TIERED

   static void unimplemented_entry   (JavaThread* thread, StubID id);

   static address exception_handler_for_pc(JavaThread* thread);

   static void post_jvmti_exception_throw(JavaThread* thread);

   static void throw_range_check_exception(JavaThread* thread, int index);

   static void throw_index_exception(JavaThread* thread, int index);

   static void throw_div0_exception(JavaThread* thread);

   static void throw_null_pointer_exception(JavaThread* thread);

   static void throw_class_cast_exception(JavaThread* thread, oopDesc* obect);

   static void throw_incompatible_class_change_error(JavaThread* thread);

   static void throw_array_store_exception(JavaThread* thread);

   static void monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock);

   static void monitorexit (JavaThread* thread, BasicObjectLock* lock);

   static int access_field_patching(JavaThread* thread);

   static int move_klass_patching(JavaThread* thread);

   static void patch_code(JavaThread* thread, StubID stub_id);

  public:

   static BufferBlob* get_buffer_blob();

   static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);

   // initialization

   static bool is_initialized()                   { return _is_initialized; }

   static void initialize();

   static void initialize_pd();

   // stubs

   static CodeBlob* blob_for (StubID id);

   static address   entry_for(StubID id)          { return blob_for(id)->instructions_begin(); }

   static const char* name_for (StubID id);

   static const char* name_for_address(address entry);

   // method tracing

   static void trace_block_entry(jint block_id);

 #ifndef PRODUCT

   static address throw_count_address()       { return (address)&_throw_count;       }

 #endif

   // directly accessible leaf routine

   static int  arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length);

   static void primitive_arraycopy(HeapWord* src, HeapWord* dst, int length);

   static void oop_arraycopy(HeapWord* src, HeapWord* dst, int length);

   static void print_statistics()                 PRODUCT_RETURN;

 };