c1_Runtime1.hpp revision 342:37f87013dfd8 
1/*
2 * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25class StubAssembler;
26
27// The Runtime1 holds all assembly stubs and VM
28// runtime routines needed by code code generated
29// by the Compiler1.
30
31#define RUNTIME1_STUBS(stub, last_entry) \
32  stub(dtrace_object_alloc)          \
33  stub(unwind_exception)             \
34  stub(forward_exception)            \
35  stub(throw_range_check_failed)       /* throws ArrayIndexOutOfBoundsException */ \
36  stub(throw_index_exception)          /* throws IndexOutOfBoundsException */ \
37  stub(throw_div0_exception)         \
38  stub(throw_null_pointer_exception) \
39  stub(register_finalizer)           \
40  stub(new_instance)                 \
41  stub(fast_new_instance)            \
42  stub(fast_new_instance_init_check) \
43  stub(new_type_array)               \
44  stub(new_object_array)             \
45  stub(new_multi_array)              \
46  stub(handle_exception_nofpu)         /* optimized version that does not preserve fpu registers */ \
47  stub(handle_exception)             \
48  stub(throw_array_store_exception)  \
49  stub(throw_class_cast_exception)   \
50  stub(throw_incompatible_class_change_error)   \
51  stub(slow_subtype_check)           \
52  stub(monitorenter)                 \
53  stub(monitorenter_nofpu)             /* optimized version that does not preserve fpu registers */ \
54  stub(monitorexit)                  \
55  stub(monitorexit_nofpu)              /* optimized version that does not preserve fpu registers */ \
56  stub(access_field_patching)        \
57  stub(load_klass_patching)          \
58  stub(jvmti_exception_throw)        \
59  stub(g1_pre_barrier_slow)          \
60  stub(g1_post_barrier_slow)         \
61  stub(fpu2long_stub)                \
62  stub(counter_overflow)             \
63  last_entry(number_of_ids)
64
65#define DECLARE_STUB_ID(x)       x ## _id ,
66#define DECLARE_LAST_STUB_ID(x)  x
67#define STUB_NAME(x)             #x " Runtime1 stub",
68#define LAST_STUB_NAME(x)        #x " Runtime1 stub"
69
70class Runtime1: public AllStatic {
71  friend class VMStructs;
72  friend class ArrayCopyStub;
73 private:
74  static int desired_max_code_buffer_size() {
75    return (int) NMethodSizeLimit;  // default 256K or 512K
76  }
77  static int desired_max_constant_size() {
78    return (int) NMethodSizeLimit / 10;  // about 25K
79  }
80
81  // Note: This buffers is allocated once at startup since allocation
82  // for each compilation seems to be too expensive (at least on Intel
83  // win32).
84  static BufferBlob* _buffer_blob;
85
86 public:
87  enum StubID {
88    RUNTIME1_STUBS(DECLARE_STUB_ID, DECLARE_LAST_STUB_ID)
89  };
90
91  // statistics
92#ifndef PRODUCT
93  static int _resolve_invoke_cnt;
94  static int _handle_wrong_method_cnt;
95  static int _ic_miss_cnt;
96  static int _generic_arraycopy_cnt;
97  static int _primitive_arraycopy_cnt;
98  static int _oop_arraycopy_cnt;
99  static int _arraycopy_slowcase_cnt;
100  static int _new_type_array_slowcase_cnt;
101  static int _new_object_array_slowcase_cnt;
102  static int _new_instance_slowcase_cnt;
103  static int _new_multi_array_slowcase_cnt;
104  static int _monitorenter_slowcase_cnt;
105  static int _monitorexit_slowcase_cnt;
106  static int _patch_code_slowcase_cnt;
107  static int _throw_range_check_exception_count;
108  static int _throw_index_exception_count;
109  static int _throw_div0_exception_count;
110  static int _throw_null_pointer_exception_count;
111  static int _throw_class_cast_exception_count;
112  static int _throw_incompatible_class_change_error_count;
113  static int _throw_array_store_exception_count;
114  static int _throw_count;
115#endif
116
117 private:
118  static bool      _is_initialized;
119  static CodeBlob* _blobs[number_of_ids];
120  static const char* _blob_names[];
121
122  // stub generation
123  static void generate_blob_for(StubID id);
124  static OopMapSet* generate_code_for(StubID id, StubAssembler* masm);
125  static OopMapSet* generate_exception_throw(StubAssembler* sasm, address target, bool has_argument);
126  static void generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_maps, OopMap* oop_map, bool ignore_fpu_registers = false);
127  static void generate_unwind_exception(StubAssembler *sasm);
128  static OopMapSet* generate_patching(StubAssembler* sasm, address target);
129
130  static OopMapSet* generate_stub_call(StubAssembler* sasm, Register result, address entry,
131                                       Register arg1 = noreg, Register arg2 = noreg, Register arg3 = noreg);
132
133  // runtime entry points
134  static void new_instance    (JavaThread* thread, klassOopDesc* klass);
135  static void new_type_array  (JavaThread* thread, klassOopDesc* klass, jint length);
136  static void new_object_array(JavaThread* thread, klassOopDesc* klass, jint length);
137  static void new_multi_array (JavaThread* thread, klassOopDesc* klass, int rank, jint* dims);
138
139#ifdef TIERED
140  static void counter_overflow(JavaThread* thread, int bci);
141#endif // TIERED
142
143  static void unimplemented_entry   (JavaThread* thread, StubID id);
144
145  static address exception_handler_for_pc(JavaThread* thread);
146  static void post_jvmti_exception_throw(JavaThread* thread);
147
148  static void throw_range_check_exception(JavaThread* thread, int index);
149  static void throw_index_exception(JavaThread* thread, int index);
150  static void throw_div0_exception(JavaThread* thread);
151  static void throw_null_pointer_exception(JavaThread* thread);
152  static void throw_class_cast_exception(JavaThread* thread, oopDesc* obect);
153  static void throw_incompatible_class_change_error(JavaThread* thread);
154  static void throw_array_store_exception(JavaThread* thread);
155
156  static void monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock);
157  static void monitorexit (JavaThread* thread, BasicObjectLock* lock);
158
159  static int access_field_patching(JavaThread* thread);
160  static int move_klass_patching(JavaThread* thread);
161
162  static void patch_code(JavaThread* thread, StubID stub_id);
163
164 public:
165  static BufferBlob* get_buffer_blob();
166  static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
167
168  // initialization
169  static bool is_initialized()                   { return _is_initialized; }
170  static void initialize();
171  static void initialize_pd();
172
173  // stubs
174  static CodeBlob* blob_for (StubID id);
175  static address   entry_for(StubID id)          { return blob_for(id)->instructions_begin(); }
176  static const char* name_for (StubID id);
177  static const char* name_for_address(address entry);
178
179  // method tracing
180  static void trace_block_entry(jint block_id);
181
182#ifndef PRODUCT
183  static address throw_count_address()       { return (address)&_throw_count;       }
184#endif
185
186  // directly accessible leaf routine
187  static int  arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length);
188  static void primitive_arraycopy(HeapWord* src, HeapWord* dst, int length);
189  static void oop_arraycopy(HeapWord* src, HeapWord* dst, int length);
190
191  static void print_statistics()                 PRODUCT_RETURN;
192};
193