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--- old/src/share/vm/runtime/stubRoutines.hpp
+++ new/src/share/vm/runtime/stubRoutines.hpp
1 1 /*
2 - * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
2 + * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #ifndef SHARE_VM_RUNTIME_STUBROUTINES_HPP
26 26 #define SHARE_VM_RUNTIME_STUBROUTINES_HPP
27 27
28 28 #include "code/codeBlob.hpp"
29 29 #include "memory/allocation.hpp"
30 30 #include "runtime/frame.hpp"
31 31 #include "runtime/mutexLocker.hpp"
32 32 #include "runtime/stubCodeGenerator.hpp"
33 33 #include "utilities/top.hpp"
34 34 #ifdef TARGET_ARCH_x86
35 35 # include "nativeInst_x86.hpp"
36 36 #endif
37 37 #ifdef TARGET_ARCH_sparc
38 38 # include "nativeInst_sparc.hpp"
39 39 #endif
40 40 #ifdef TARGET_ARCH_zero
41 41 # include "nativeInst_zero.hpp"
42 42 #endif
43 43 #ifdef TARGET_ARCH_arm
44 44 # include "nativeInst_arm.hpp"
45 45 #endif
46 46 #ifdef TARGET_ARCH_ppc
47 47 # include "nativeInst_ppc.hpp"
48 48 #endif
49 49
50 50 // StubRoutines provides entry points to assembly routines used by
51 51 // compiled code and the run-time system. Platform-specific entry
52 52 // points are defined in the platform-specific inner class.
53 53 //
54 54 // Class scheme:
55 55 //
56 56 // platform-independent platform-dependent
57 57 //
58 58 // stubRoutines.hpp <-- included -- stubRoutines_<arch>.hpp
59 59 // ^ ^
60 60 // | |
61 61 // implements implements
62 62 // | |
63 63 // | |
64 64 // stubRoutines.cpp stubRoutines_<arch>.cpp
65 65 // stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp
66 66 // stubRoutines_<os_arch>.cpp
67 67 //
68 68 // Note 1: The important thing is a clean decoupling between stub
69 69 // entry points (interfacing to the whole vm; i.e., 1-to-n
70 70 // relationship) and stub generators (interfacing only to
71 71 // the entry points implementation; i.e., 1-to-1 relationship).
72 72 // This significantly simplifies changes in the generator
73 73 // structure since the rest of the vm is not affected.
74 74 //
75 75 // Note 2: stubGenerator_<arch>.cpp contains a minimal portion of
76 76 // machine-independent code; namely the generator calls of
77 77 // the generator functions that are used platform-independently.
78 78 // However, it comes with the advantage of having a 1-file
79 79 // implementation of the generator. It should be fairly easy
80 80 // to change, should it become a problem later.
81 81 //
82 82 // Scheme for adding a new entry point:
83 83 //
84 84 // 1. determine if it's a platform-dependent or independent entry point
85 85 // a) if platform independent: make subsequent changes in the independent files
86 86 // b) if platform dependent: make subsequent changes in the dependent files
87 87 // 2. add a private instance variable holding the entry point address
88 88 // 3. add a public accessor function to the instance variable
89 89 // 4. implement the corresponding generator function in the platform-dependent
90 90 // stubGenerator_<arch>.cpp file and call the function in generate_all() of that file
91 91
92 92
93 93 class StubRoutines: AllStatic {
94 94
95 95 public:
96 96 enum platform_independent_constants {
97 97 max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups
98 98 };
99 99
100 100 // Dependencies
101 101 friend class StubGenerator;
102 102 #ifdef TARGET_ARCH_MODEL_x86_32
103 103 # include "stubRoutines_x86_32.hpp"
104 104 #endif
105 105 #ifdef TARGET_ARCH_MODEL_x86_64
106 106 # include "stubRoutines_x86_64.hpp"
107 107 #endif
108 108 #ifdef TARGET_ARCH_MODEL_sparc
109 109 # include "stubRoutines_sparc.hpp"
110 110 #endif
111 111 #ifdef TARGET_ARCH_MODEL_zero
112 112 # include "stubRoutines_zero.hpp"
113 113 #endif
114 114 #ifdef TARGET_ARCH_MODEL_arm
115 115 # include "stubRoutines_arm.hpp"
116 116 #endif
117 117 #ifdef TARGET_ARCH_MODEL_ppc
118 118 # include "stubRoutines_ppc.hpp"
119 119 #endif
120 120
121 121
122 122 static jint _verify_oop_count;
123 123 static address _verify_oop_subroutine_entry;
124 124
125 125 static address _call_stub_return_address; // the return PC, when returning to a call stub
126 126 static address _call_stub_entry;
127 127 static address _forward_exception_entry;
128 128 static address _catch_exception_entry;
129 129 static address _throw_AbstractMethodError_entry;
130 130 static address _throw_IncompatibleClassChangeError_entry;
131 131 static address _throw_ArithmeticException_entry;
132 132 static address _throw_NullPointerException_entry;
133 133 static address _throw_NullPointerException_at_call_entry;
134 134 static address _throw_StackOverflowError_entry;
135 135 static address _handler_for_unsafe_access_entry;
136 136
137 137 static address _atomic_xchg_entry;
138 138 static address _atomic_xchg_ptr_entry;
139 139 static address _atomic_store_entry;
140 140 static address _atomic_store_ptr_entry;
141 141 static address _atomic_cmpxchg_entry;
142 142 static address _atomic_cmpxchg_ptr_entry;
143 143 static address _atomic_cmpxchg_long_entry;
144 144 static address _atomic_add_entry;
145 145 static address _atomic_add_ptr_entry;
146 146 static address _fence_entry;
147 147 static address _d2i_wrapper;
148 148 static address _d2l_wrapper;
149 149
150 150 static jint _fpu_cntrl_wrd_std;
151 151 static jint _fpu_cntrl_wrd_24;
152 152 static jint _fpu_cntrl_wrd_64;
153 153 static jint _fpu_cntrl_wrd_trunc;
154 154 static jint _mxcsr_std;
155 155 static jint _fpu_subnormal_bias1[3];
156 156 static jint _fpu_subnormal_bias2[3];
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157 157
158 158 static BufferBlob* _code1; // code buffer for initial routines
159 159 static BufferBlob* _code2; // code buffer for all other routines
160 160
161 161 // Leaf routines which implement arraycopy and their addresses
162 162 // arraycopy operands aligned on element type boundary
163 163 static address _jbyte_arraycopy;
164 164 static address _jshort_arraycopy;
165 165 static address _jint_arraycopy;
166 166 static address _jlong_arraycopy;
167 - static address _oop_arraycopy;
167 + static address _oop_arraycopy, _oop_arraycopy_uninit;
168 168 static address _jbyte_disjoint_arraycopy;
169 169 static address _jshort_disjoint_arraycopy;
170 170 static address _jint_disjoint_arraycopy;
171 171 static address _jlong_disjoint_arraycopy;
172 - static address _oop_disjoint_arraycopy;
172 + static address _oop_disjoint_arraycopy, _oop_disjoint_arraycopy_uninit;
173 173
174 174 // arraycopy operands aligned on zero'th element boundary
175 175 // These are identical to the ones aligned aligned on an
176 176 // element type boundary, except that they assume that both
177 177 // source and destination are HeapWord aligned.
178 178 static address _arrayof_jbyte_arraycopy;
179 179 static address _arrayof_jshort_arraycopy;
180 180 static address _arrayof_jint_arraycopy;
181 181 static address _arrayof_jlong_arraycopy;
182 - static address _arrayof_oop_arraycopy;
182 + static address _arrayof_oop_arraycopy, _arrayof_oop_arraycopy_uninit;
183 183 static address _arrayof_jbyte_disjoint_arraycopy;
184 184 static address _arrayof_jshort_disjoint_arraycopy;
185 185 static address _arrayof_jint_disjoint_arraycopy;
186 186 static address _arrayof_jlong_disjoint_arraycopy;
187 - static address _arrayof_oop_disjoint_arraycopy;
187 + static address _arrayof_oop_disjoint_arraycopy, _arrayof_oop_disjoint_arraycopy_uninit;
188 188
189 189 // these are recommended but optional:
190 - static address _checkcast_arraycopy;
190 + static address _checkcast_arraycopy, _checkcast_arraycopy_uninit;
191 191 static address _unsafe_arraycopy;
192 192 static address _generic_arraycopy;
193 193
194 194 static address _jbyte_fill;
195 195 static address _jshort_fill;
196 196 static address _jint_fill;
197 197 static address _arrayof_jbyte_fill;
198 198 static address _arrayof_jshort_fill;
199 199 static address _arrayof_jint_fill;
200 200
201 201 // These are versions of the java.lang.Math methods which perform
202 202 // the same operations as the intrinsic version. They are used for
203 203 // constant folding in the compiler to ensure equivalence. If the
204 204 // intrinsic version returns the same result as the strict version
205 205 // then they can be set to the appropriate function from
206 206 // SharedRuntime.
207 207 static double (*_intrinsic_log)(double);
208 208 static double (*_intrinsic_log10)(double);
209 209 static double (*_intrinsic_exp)(double);
210 210 static double (*_intrinsic_pow)(double, double);
211 211 static double (*_intrinsic_sin)(double);
212 212 static double (*_intrinsic_cos)(double);
213 213 static double (*_intrinsic_tan)(double);
214 214
215 215 public:
216 216 // Initialization/Testing
217 217 static void initialize1(); // must happen before universe::genesis
218 218 static void initialize2(); // must happen after universe::genesis
219 219
220 220 static bool contains(address addr) {
221 221 return
222 222 (_code1 != NULL && _code1->blob_contains(addr)) ||
223 223 (_code2 != NULL && _code2->blob_contains(addr)) ;
224 224 }
225 225
226 226 // Debugging
227 227 static jint verify_oop_count() { return _verify_oop_count; }
228 228 static jint* verify_oop_count_addr() { return &_verify_oop_count; }
229 229 // a subroutine for debugging the GC
230 230 static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; }
231 231
232 232 static address catch_exception_entry() { return _catch_exception_entry; }
233 233
234 234 // Calls to Java
235 235 typedef void (*CallStub)(
236 236 address link,
237 237 intptr_t* result,
238 238 BasicType result_type,
239 239 methodOopDesc* method,
240 240 address entry_point,
241 241 intptr_t* parameters,
242 242 int size_of_parameters,
243 243 TRAPS
244 244 );
245 245
246 246 static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); }
247 247
248 248 // Exceptions
249 249 static address forward_exception_entry() { return _forward_exception_entry; }
250 250 // Implicit exceptions
251 251 static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; }
252 252 static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; }
253 253 static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; }
254 254 static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; }
255 255 static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; }
256 256 static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; }
257 257
258 258 // Exceptions during unsafe access - should throw Java exception rather
259 259 // than crash.
260 260 static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; }
261 261
262 262 static address atomic_xchg_entry() { return _atomic_xchg_entry; }
263 263 static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; }
264 264 static address atomic_store_entry() { return _atomic_store_entry; }
265 265 static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; }
266 266 static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; }
267 267 static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; }
268 268 static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; }
269 269 static address atomic_add_entry() { return _atomic_add_entry; }
270 270 static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; }
271 271 static address fence_entry() { return _fence_entry; }
272 272
273 273 static address d2i_wrapper() { return _d2i_wrapper; }
274 274 static address d2l_wrapper() { return _d2l_wrapper; }
275 275 static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; }
276 276 static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; }
277 277 static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; }
278 278 static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; }
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279 279 static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; }
280 280 static address addr_mxcsr_std() { return (address)&_mxcsr_std; }
281 281 static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; }
282 282 static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; }
283 283
284 284
285 285 static address jbyte_arraycopy() { return _jbyte_arraycopy; }
286 286 static address jshort_arraycopy() { return _jshort_arraycopy; }
287 287 static address jint_arraycopy() { return _jint_arraycopy; }
288 288 static address jlong_arraycopy() { return _jlong_arraycopy; }
289 - static address oop_arraycopy() { return _oop_arraycopy; }
289 + static address oop_arraycopy(bool dest_uninitialized = false) {
290 + return dest_uninitialized ? _oop_arraycopy_uninit : _oop_arraycopy;
291 + }
290 292 static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; }
291 293 static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; }
292 294 static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; }
293 295 static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; }
294 - static address oop_disjoint_arraycopy() { return _oop_disjoint_arraycopy; }
296 + static address oop_disjoint_arraycopy(bool dest_uninitialized = false) {
297 + return dest_uninitialized ? _oop_disjoint_arraycopy_uninit : _oop_disjoint_arraycopy;
298 + }
295 299
296 300 static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; }
297 301 static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; }
298 302 static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; }
299 303 static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; }
300 - static address arrayof_oop_arraycopy() { return _arrayof_oop_arraycopy; }
304 + static address arrayof_oop_arraycopy(bool dest_uninitialized = false) {
305 + return dest_uninitialized ? _arrayof_oop_arraycopy_uninit : _arrayof_oop_arraycopy;
306 + }
301 307
302 308 static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; }
303 309 static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; }
304 310 static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; }
305 311 static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; }
306 - static address arrayof_oop_disjoint_arraycopy() { return _arrayof_oop_disjoint_arraycopy; }
312 + static address arrayof_oop_disjoint_arraycopy(bool dest_uninitialized = false) {
313 + return dest_uninitialized ? _arrayof_oop_disjoint_arraycopy_uninit : _arrayof_oop_disjoint_arraycopy;
314 + }
307 315
308 - static address checkcast_arraycopy() { return _checkcast_arraycopy; }
316 + static address checkcast_arraycopy(bool dest_uninitialized = false) {
317 + return dest_uninitialized ? _checkcast_arraycopy_uninit : _checkcast_arraycopy;
318 + }
309 319 static address unsafe_arraycopy() { return _unsafe_arraycopy; }
310 320 static address generic_arraycopy() { return _generic_arraycopy; }
311 321
312 322 static address jbyte_fill() { return _jbyte_fill; }
313 323 static address jshort_fill() { return _jshort_fill; }
314 324 static address jint_fill() { return _jint_fill; }
315 325 static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; }
316 326 static address arrayof_jshort_fill() { return _arrayof_jshort_fill; }
317 327 static address arrayof_jint_fill() { return _arrayof_jint_fill; }
318 328
319 329 static address select_fill_function(BasicType t, bool aligned, const char* &name);
320 330
321 331
322 332 static double intrinsic_log(double d) {
323 333 assert(_intrinsic_log != NULL, "must be defined");
324 334 return _intrinsic_log(d);
325 335 }
326 336 static double intrinsic_log10(double d) {
327 337 assert(_intrinsic_log != NULL, "must be defined");
328 338 return _intrinsic_log10(d);
329 339 }
330 340 static double intrinsic_exp(double d) {
331 341 assert(_intrinsic_exp != NULL, "must be defined");
332 342 return _intrinsic_exp(d);
333 343 }
334 344 static double intrinsic_pow(double d, double d2) {
335 345 assert(_intrinsic_pow != NULL, "must be defined");
336 346 return _intrinsic_pow(d, d2);
337 347 }
338 348 static double intrinsic_sin(double d) {
339 349 assert(_intrinsic_sin != NULL, "must be defined");
340 350 return _intrinsic_sin(d);
341 351 }
342 352 static double intrinsic_cos(double d) {
343 353 assert(_intrinsic_cos != NULL, "must be defined");
344 354 return _intrinsic_cos(d);
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345 355 }
346 356 static double intrinsic_tan(double d) {
347 357 assert(_intrinsic_tan != NULL, "must be defined");
348 358 return _intrinsic_tan(d);
349 359 }
350 360
351 361 //
352 362 // Default versions of the above arraycopy functions for platforms which do
353 363 // not have specialized versions
354 364 //
355 - static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);
356 - static void jshort_copy(jshort* src, jshort* dest, size_t count);
357 - static void jint_copy (jint* src, jint* dest, size_t count);
358 - static void jlong_copy (jlong* src, jlong* dest, size_t count);
359 - static void oop_copy (oop* src, oop* dest, size_t count);
360 -
361 - static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count);
362 - static void arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count);
363 - static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count);
364 - static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count);
365 - static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count);
365 + static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);
366 + static void jshort_copy (jshort* src, jshort* dest, size_t count);
367 + static void jint_copy (jint* src, jint* dest, size_t count);
368 + static void jlong_copy (jlong* src, jlong* dest, size_t count);
369 + static void oop_copy (oop* src, oop* dest, size_t count);
370 + static void oop_copy_uninit(oop* src, oop* dest, size_t count);
371 +
372 + static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count);
373 + static void arrayof_jshort_copy (HeapWord* src, HeapWord* dest, size_t count);
374 + static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count);
375 + static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count);
376 + static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count);
377 + static void arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count);
366 378 };
367 379
368 380 #endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP
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