hotspot/src/share/vm/c1/c1_Runtime1.hpp
author duke
Sat, 01 Dec 2007 00:00:00 +0000
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/*
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 * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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class StubAssembler;
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// The Runtime1 holds all assembly stubs and VM
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// runtime routines needed by code code generated
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// by the Compiler1.
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#define RUNTIME1_STUBS(stub, last_entry) \
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  stub(dtrace_object_alloc)          \
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  stub(unwind_exception)             \
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  stub(forward_exception)            \
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  stub(throw_range_check_failed)       /* throws ArrayIndexOutOfBoundsException */ \
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  stub(throw_index_exception)          /* throws IndexOutOfBoundsException */ \
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  stub(throw_div0_exception)         \
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  stub(throw_null_pointer_exception) \
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  stub(register_finalizer)           \
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  stub(new_instance)                 \
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  stub(fast_new_instance)            \
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  stub(fast_new_instance_init_check) \
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  stub(new_type_array)               \
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  stub(new_object_array)             \
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  stub(new_multi_array)              \
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  stub(handle_exception_nofpu)         /* optimized version that does not preserve fpu registers */ \
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  stub(handle_exception)             \
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  stub(throw_array_store_exception)  \
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  stub(throw_class_cast_exception)   \
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  stub(throw_incompatible_class_change_error)   \
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  stub(slow_subtype_check)           \
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  stub(monitorenter)                 \
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  stub(monitorenter_nofpu)             /* optimized version that does not preserve fpu registers */ \
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  stub(monitorexit)                  \
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  stub(monitorexit_nofpu)              /* optimized version that does not preserve fpu registers */ \
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  stub(access_field_patching)        \
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  stub(load_klass_patching)          \
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  stub(jvmti_exception_throw)        \
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  stub(fpu2long_stub)                \
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  stub(counter_overflow)             \
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  last_entry(number_of_ids)
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#define DECLARE_STUB_ID(x)       x ## _id ,
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#define DECLARE_LAST_STUB_ID(x)  x
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#define STUB_NAME(x)             #x " Runtime1 stub",
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#define LAST_STUB_NAME(x)        #x " Runtime1 stub"
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class Runtime1: public AllStatic {
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  friend class VMStructs;
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  friend class ArrayCopyStub;
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 private:
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  static int desired_max_code_buffer_size() {
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    return (int) NMethodSizeLimit;  // default 256K or 512K
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  }
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  static int desired_max_constant_size() {
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    return (int) NMethodSizeLimit / 10;  // about 25K
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  }
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  // Note: This buffers is allocated once at startup since allocation
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  // for each compilation seems to be too expensive (at least on Intel
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  // win32).
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  static BufferBlob* _buffer_blob;
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 public:
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  enum StubID {
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    RUNTIME1_STUBS(DECLARE_STUB_ID, DECLARE_LAST_STUB_ID)
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  };
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  // statistics
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#ifndef PRODUCT
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  static int _resolve_invoke_cnt;
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  static int _handle_wrong_method_cnt;
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  static int _ic_miss_cnt;
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  static int _generic_arraycopy_cnt;
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  static int _primitive_arraycopy_cnt;
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  static int _oop_arraycopy_cnt;
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  static int _arraycopy_slowcase_cnt;
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  static int _new_type_array_slowcase_cnt;
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  static int _new_object_array_slowcase_cnt;
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  static int _new_instance_slowcase_cnt;
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  static int _new_multi_array_slowcase_cnt;
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  static int _monitorenter_slowcase_cnt;
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  static int _monitorexit_slowcase_cnt;
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  static int _patch_code_slowcase_cnt;
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  static int _throw_range_check_exception_count;
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  static int _throw_index_exception_count;
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  static int _throw_div0_exception_count;
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  static int _throw_null_pointer_exception_count;
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  static int _throw_class_cast_exception_count;
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  static int _throw_incompatible_class_change_error_count;
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  static int _throw_array_store_exception_count;
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  static int _throw_count;
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#endif
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 private:
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  static bool      _is_initialized;
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  static CodeBlob* _blobs[number_of_ids];
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  static const char* _blob_names[];
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  // stub generation
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  static void generate_blob_for(StubID id);
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  static OopMapSet* generate_code_for(StubID id, StubAssembler* masm);
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  static OopMapSet* generate_exception_throw(StubAssembler* sasm, address target, bool has_argument);
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  static void generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_maps, OopMap* oop_map, bool ignore_fpu_registers = false);
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  static void generate_unwind_exception(StubAssembler *sasm);
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  static OopMapSet* generate_patching(StubAssembler* sasm, address target);
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  static OopMapSet* generate_stub_call(StubAssembler* sasm, Register result, address entry,
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                                       Register arg1 = noreg, Register arg2 = noreg, Register arg3 = noreg);
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  // runtime entry points
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  static void new_instance    (JavaThread* thread, klassOopDesc* klass);
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  static void new_type_array  (JavaThread* thread, klassOopDesc* klass, jint length);
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  static void new_object_array(JavaThread* thread, klassOopDesc* klass, jint length);
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  static void new_multi_array (JavaThread* thread, klassOopDesc* klass, int rank, jint* dims);
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#ifdef TIERED
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  static void counter_overflow(JavaThread* thread, int bci);
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#endif // TIERED
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  static void unimplemented_entry   (JavaThread* thread, StubID id);
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  static address exception_handler_for_pc(JavaThread* thread);
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  static void post_jvmti_exception_throw(JavaThread* thread);
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  static void throw_range_check_exception(JavaThread* thread, int index);
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  static void throw_index_exception(JavaThread* thread, int index);
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  static void throw_div0_exception(JavaThread* thread);
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  static void throw_null_pointer_exception(JavaThread* thread);
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  static void throw_class_cast_exception(JavaThread* thread, oopDesc* obect);
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  static void throw_incompatible_class_change_error(JavaThread* thread);
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  static void throw_array_store_exception(JavaThread* thread);
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  static void monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock);
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  static void monitorexit (JavaThread* thread, BasicObjectLock* lock);
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  static int access_field_patching(JavaThread* thread);
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  static int move_klass_patching(JavaThread* thread);
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  static void patch_code(JavaThread* thread, StubID stub_id);
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 public:
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  static BufferBlob* get_buffer_blob();
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  static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
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  // initialization
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  static bool is_initialized()                   { return _is_initialized; }
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  static void initialize();
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  static void initialize_pd();
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  // stubs
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  static CodeBlob* blob_for (StubID id);
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  static address   entry_for(StubID id)          { return blob_for(id)->instructions_begin(); }
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  static const char* name_for (StubID id);
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  static const char* name_for_address(address entry);
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  // method tracing
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  static void trace_block_entry(jint block_id);
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#ifndef PRODUCT
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  static address throw_count_address()       { return (address)&_throw_count;       }
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#endif
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  // directly accessible leaf routine
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  static int  arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length);
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  static void primitive_arraycopy(HeapWord* src, HeapWord* dst, int length);
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  static void oop_arraycopy(HeapWord* src, HeapWord* dst, int length);
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  static void print_statistics()                 PRODUCT_RETURN;
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};