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annotate src/share/vm/interpreter/bytecodeInterpreter.cpp @ 14400:bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
Reviewed-by: sspitsyn, kvn
author | goetz |
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date | Wed, 03 Jul 2013 11:25:06 +0200 |
parents | 48b178ff07b6 |
children | 0014add32e54 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 // no precompiled headers |
26 #include "classfile/vmSymbols.hpp" | |
27 #include "gc_interface/collectedHeap.hpp" | |
28 #include "interpreter/bytecodeHistogram.hpp" | |
29 #include "interpreter/bytecodeInterpreter.hpp" | |
30 #include "interpreter/bytecodeInterpreter.inline.hpp" | |
31 #include "interpreter/interpreter.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "memory/resourceArea.hpp" | |
10233 | 34 #include "oops/methodCounters.hpp" |
1972 | 35 #include "oops/objArrayKlass.hpp" |
36 #include "oops/oop.inline.hpp" | |
37 #include "prims/jvmtiExport.hpp" | |
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38 #include "prims/jvmtiThreadState.hpp" |
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39 #include "runtime/biasedLocking.hpp" |
1972 | 40 #include "runtime/frame.inline.hpp" |
41 #include "runtime/handles.inline.hpp" | |
42 #include "runtime/interfaceSupport.hpp" | |
43 #include "runtime/sharedRuntime.hpp" | |
44 #include "runtime/threadCritical.hpp" | |
45 #include "utilities/exceptions.hpp" | |
46 #ifdef TARGET_OS_ARCH_linux_x86 | |
47 # include "orderAccess_linux_x86.inline.hpp" | |
48 #endif | |
49 #ifdef TARGET_OS_ARCH_linux_sparc | |
50 # include "orderAccess_linux_sparc.inline.hpp" | |
51 #endif | |
52 #ifdef TARGET_OS_ARCH_linux_zero | |
53 # include "orderAccess_linux_zero.inline.hpp" | |
54 #endif | |
55 #ifdef TARGET_OS_ARCH_solaris_x86 | |
56 # include "orderAccess_solaris_x86.inline.hpp" | |
57 #endif | |
58 #ifdef TARGET_OS_ARCH_solaris_sparc | |
59 # include "orderAccess_solaris_sparc.inline.hpp" | |
60 #endif | |
61 #ifdef TARGET_OS_ARCH_windows_x86 | |
62 # include "orderAccess_windows_x86.inline.hpp" | |
63 #endif | |
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64 #ifdef TARGET_OS_ARCH_linux_arm |
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65 # include "orderAccess_linux_arm.inline.hpp" |
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66 #endif |
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67 #ifdef TARGET_OS_ARCH_linux_ppc |
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68 # include "orderAccess_linux_ppc.inline.hpp" |
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69 #endif |
3960 | 70 #ifdef TARGET_OS_ARCH_bsd_x86 |
71 # include "orderAccess_bsd_x86.inline.hpp" | |
72 #endif | |
73 #ifdef TARGET_OS_ARCH_bsd_zero | |
74 # include "orderAccess_bsd_zero.inline.hpp" | |
75 #endif | |
1972 | 76 |
0 | 77 |
78 // no precompiled headers | |
79 #ifdef CC_INTERP | |
80 | |
81 /* | |
82 * USELABELS - If using GCC, then use labels for the opcode dispatching | |
83 * rather -then a switch statement. This improves performance because it | |
84 * gives us the oportunity to have the instructions that calculate the | |
85 * next opcode to jump to be intermixed with the rest of the instructions | |
86 * that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro). | |
87 */ | |
88 #undef USELABELS | |
89 #ifdef __GNUC__ | |
90 /* | |
91 ASSERT signifies debugging. It is much easier to step thru bytecodes if we | |
92 don't use the computed goto approach. | |
93 */ | |
94 #ifndef ASSERT | |
95 #define USELABELS | |
96 #endif | |
97 #endif | |
98 | |
99 #undef CASE | |
100 #ifdef USELABELS | |
101 #define CASE(opcode) opc ## opcode | |
102 #define DEFAULT opc_default | |
103 #else | |
104 #define CASE(opcode) case Bytecodes:: opcode | |
105 #define DEFAULT default | |
106 #endif | |
107 | |
108 /* | |
109 * PREFETCH_OPCCODE - Some compilers do better if you prefetch the next | |
110 * opcode before going back to the top of the while loop, rather then having | |
111 * the top of the while loop handle it. This provides a better opportunity | |
112 * for instruction scheduling. Some compilers just do this prefetch | |
113 * automatically. Some actually end up with worse performance if you | |
114 * force the prefetch. Solaris gcc seems to do better, but cc does worse. | |
115 */ | |
116 #undef PREFETCH_OPCCODE | |
117 #define PREFETCH_OPCCODE | |
118 | |
119 /* | |
120 Interpreter safepoint: it is expected that the interpreter will have no live | |
121 handles of its own creation live at an interpreter safepoint. Therefore we | |
122 run a HandleMarkCleaner and trash all handles allocated in the call chain | |
123 since the JavaCalls::call_helper invocation that initiated the chain. | |
124 There really shouldn't be any handles remaining to trash but this is cheap | |
125 in relation to a safepoint. | |
126 */ | |
127 #define SAFEPOINT \ | |
128 if ( SafepointSynchronize::is_synchronizing()) { \ | |
129 { \ | |
130 /* zap freed handles rather than GC'ing them */ \ | |
131 HandleMarkCleaner __hmc(THREAD); \ | |
132 } \ | |
133 CALL_VM(SafepointSynchronize::block(THREAD), handle_exception); \ | |
134 } | |
135 | |
136 /* | |
137 * VM_JAVA_ERROR - Macro for throwing a java exception from | |
138 * the interpreter loop. Should really be a CALL_VM but there | |
139 * is no entry point to do the transition to vm so we just | |
140 * do it by hand here. | |
141 */ | |
142 #define VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
143 DECACHE_STATE(); \ | |
144 SET_LAST_JAVA_FRAME(); \ | |
145 { \ | |
146 ThreadInVMfromJava trans(THREAD); \ | |
147 Exceptions::_throw_msg(THREAD, __FILE__, __LINE__, name, msg); \ | |
148 } \ | |
149 RESET_LAST_JAVA_FRAME(); \ | |
150 CACHE_STATE(); | |
151 | |
152 // Normal throw of a java error | |
153 #define VM_JAVA_ERROR(name, msg) \ | |
154 VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
155 goto handle_exception; | |
156 | |
157 #ifdef PRODUCT | |
158 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) | |
159 #else | |
160 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) \ | |
161 { \ | |
162 BytecodeCounter::_counter_value++; \ | |
163 BytecodeHistogram::_counters[(Bytecodes::Code)opcode]++; \ | |
164 if (StopInterpreterAt && StopInterpreterAt == BytecodeCounter::_counter_value) os::breakpoint(); \ | |
165 if (TraceBytecodes) { \ | |
166 CALL_VM((void)SharedRuntime::trace_bytecode(THREAD, 0, \ | |
167 topOfStack[Interpreter::expr_index_at(1)], \ | |
168 topOfStack[Interpreter::expr_index_at(2)]), \ | |
169 handle_exception); \ | |
170 } \ | |
171 } | |
172 #endif | |
173 | |
174 #undef DEBUGGER_SINGLE_STEP_NOTIFY | |
175 #ifdef VM_JVMTI | |
176 /* NOTE: (kbr) This macro must be called AFTER the PC has been | |
177 incremented. JvmtiExport::at_single_stepping_point() may cause a | |
178 breakpoint opcode to get inserted at the current PC to allow the | |
179 debugger to coalesce single-step events. | |
180 | |
181 As a result if we call at_single_stepping_point() we refetch opcode | |
182 to get the current opcode. This will override any other prefetching | |
183 that might have occurred. | |
184 */ | |
185 #define DEBUGGER_SINGLE_STEP_NOTIFY() \ | |
186 { \ | |
187 if (_jvmti_interp_events) { \ | |
188 if (JvmtiExport::should_post_single_step()) { \ | |
189 DECACHE_STATE(); \ | |
190 SET_LAST_JAVA_FRAME(); \ | |
191 ThreadInVMfromJava trans(THREAD); \ | |
192 JvmtiExport::at_single_stepping_point(THREAD, \ | |
193 istate->method(), \ | |
194 pc); \ | |
195 RESET_LAST_JAVA_FRAME(); \ | |
196 CACHE_STATE(); \ | |
197 if (THREAD->pop_frame_pending() && \ | |
198 !THREAD->pop_frame_in_process()) { \ | |
199 goto handle_Pop_Frame; \ | |
200 } \ | |
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201 if (THREAD->jvmti_thread_state() && \ |
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202 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \ |
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203 goto handle_Early_Return; \ |
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204 } \ |
0 | 205 opcode = *pc; \ |
206 } \ | |
207 } \ | |
208 } | |
209 #else | |
210 #define DEBUGGER_SINGLE_STEP_NOTIFY() | |
211 #endif | |
212 | |
213 /* | |
214 * CONTINUE - Macro for executing the next opcode. | |
215 */ | |
216 #undef CONTINUE | |
217 #ifdef USELABELS | |
218 // Have to do this dispatch this way in C++ because otherwise gcc complains about crossing an | |
219 // initialization (which is is the initialization of the table pointer...) | |
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220 #define DISPATCH(opcode) goto *(void*)dispatch_table[opcode] |
0 | 221 #define CONTINUE { \ |
222 opcode = *pc; \ | |
223 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
224 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
225 DISPATCH(opcode); \ | |
226 } | |
227 #else | |
228 #ifdef PREFETCH_OPCCODE | |
229 #define CONTINUE { \ | |
230 opcode = *pc; \ | |
231 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
232 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
233 continue; \ | |
234 } | |
235 #else | |
236 #define CONTINUE { \ | |
237 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
238 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
239 continue; \ | |
240 } | |
241 #endif | |
242 #endif | |
243 | |
244 | |
245 #define UPDATE_PC(opsize) {pc += opsize; } | |
246 /* | |
247 * UPDATE_PC_AND_TOS - Macro for updating the pc and topOfStack. | |
248 */ | |
249 #undef UPDATE_PC_AND_TOS | |
250 #define UPDATE_PC_AND_TOS(opsize, stack) \ | |
251 {pc += opsize; MORE_STACK(stack); } | |
252 | |
253 /* | |
254 * UPDATE_PC_AND_TOS_AND_CONTINUE - Macro for updating the pc and topOfStack, | |
255 * and executing the next opcode. It's somewhat similar to the combination | |
256 * of UPDATE_PC_AND_TOS and CONTINUE, but with some minor optimizations. | |
257 */ | |
258 #undef UPDATE_PC_AND_TOS_AND_CONTINUE | |
259 #ifdef USELABELS | |
260 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
261 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
262 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
263 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
264 DISPATCH(opcode); \ | |
265 } | |
266 | |
267 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
268 pc += opsize; opcode = *pc; \ | |
269 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
270 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
271 DISPATCH(opcode); \ | |
272 } | |
273 #else | |
274 #ifdef PREFETCH_OPCCODE | |
275 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
276 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
277 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
278 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
279 goto do_continue; \ | |
280 } | |
281 | |
282 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
283 pc += opsize; opcode = *pc; \ | |
284 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
285 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
286 goto do_continue; \ | |
287 } | |
288 #else | |
289 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
290 pc += opsize; MORE_STACK(stack); \ | |
291 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
292 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
293 goto do_continue; \ | |
294 } | |
295 | |
296 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
297 pc += opsize; \ | |
298 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
299 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
300 goto do_continue; \ | |
301 } | |
302 #endif /* PREFETCH_OPCCODE */ | |
303 #endif /* USELABELS */ | |
304 | |
305 // About to call a new method, update the save the adjusted pc and return to frame manager | |
306 #define UPDATE_PC_AND_RETURN(opsize) \ | |
307 DECACHE_TOS(); \ | |
308 istate->set_bcp(pc+opsize); \ | |
309 return; | |
310 | |
311 | |
312 #define METHOD istate->method() | |
10233 | 313 #define GET_METHOD_COUNTERS(res) \ |
314 res = METHOD->method_counters(); \ | |
315 if (res == NULL) { \ | |
316 CALL_VM(res = InterpreterRuntime::build_method_counters(THREAD, METHOD), handle_exception); \ | |
317 } | |
318 | |
0 | 319 #define OSR_REQUEST(res, branch_pc) \ |
320 CALL_VM(res=InterpreterRuntime::frequency_counter_overflow(THREAD, branch_pc), handle_exception); | |
321 /* | |
322 * For those opcodes that need to have a GC point on a backwards branch | |
323 */ | |
324 | |
325 // Backedge counting is kind of strange. The asm interpreter will increment | |
326 // the backedge counter as a separate counter but it does it's comparisons | |
327 // to the sum (scaled) of invocation counter and backedge count to make | |
328 // a decision. Seems kind of odd to sum them together like that | |
329 | |
330 // skip is delta from current bcp/bci for target, branch_pc is pre-branch bcp | |
331 | |
332 | |
333 #define DO_BACKEDGE_CHECKS(skip, branch_pc) \ | |
334 if ((skip) <= 0) { \ | |
10233 | 335 MethodCounters* mcs; \ |
336 GET_METHOD_COUNTERS(mcs); \ | |
1078 | 337 if (UseLoopCounter) { \ |
0 | 338 bool do_OSR = UseOnStackReplacement; \ |
10233 | 339 mcs->backedge_counter()->increment(); \ |
340 if (do_OSR) do_OSR = mcs->backedge_counter()->reached_InvocationLimit(); \ | |
0 | 341 if (do_OSR) { \ |
342 nmethod* osr_nmethod; \ | |
343 OSR_REQUEST(osr_nmethod, branch_pc); \ | |
344 if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \ | |
1078 | 345 intptr_t* buf = SharedRuntime::OSR_migration_begin(THREAD); \ |
0 | 346 istate->set_msg(do_osr); \ |
347 istate->set_osr_buf((address)buf); \ | |
348 istate->set_osr_entry(osr_nmethod->osr_entry()); \ | |
349 return; \ | |
350 } \ | |
351 } \ | |
352 } /* UseCompiler ... */ \ | |
10233 | 353 mcs->invocation_counter()->increment(); \ |
0 | 354 SAFEPOINT; \ |
355 } | |
356 | |
357 /* | |
358 * For those opcodes that need to have a GC point on a backwards branch | |
359 */ | |
360 | |
361 /* | |
362 * Macros for caching and flushing the interpreter state. Some local | |
363 * variables need to be flushed out to the frame before we do certain | |
364 * things (like pushing frames or becomming gc safe) and some need to | |
365 * be recached later (like after popping a frame). We could use one | |
366 * macro to cache or decache everything, but this would be less then | |
367 * optimal because we don't always need to cache or decache everything | |
368 * because some things we know are already cached or decached. | |
369 */ | |
370 #undef DECACHE_TOS | |
371 #undef CACHE_TOS | |
372 #undef CACHE_PREV_TOS | |
373 #define DECACHE_TOS() istate->set_stack(topOfStack); | |
374 | |
375 #define CACHE_TOS() topOfStack = (intptr_t *)istate->stack(); | |
376 | |
377 #undef DECACHE_PC | |
378 #undef CACHE_PC | |
379 #define DECACHE_PC() istate->set_bcp(pc); | |
380 #define CACHE_PC() pc = istate->bcp(); | |
381 #define CACHE_CP() cp = istate->constants(); | |
382 #define CACHE_LOCALS() locals = istate->locals(); | |
383 #undef CACHE_FRAME | |
384 #define CACHE_FRAME() | |
385 | |
386 /* | |
387 * CHECK_NULL - Macro for throwing a NullPointerException if the object | |
388 * passed is a null ref. | |
389 * On some architectures/platforms it should be possible to do this implicitly | |
390 */ | |
391 #undef CHECK_NULL | |
392 #define CHECK_NULL(obj_) \ | |
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393 if ((obj_) == NULL) { \ |
0 | 394 VM_JAVA_ERROR(vmSymbols::java_lang_NullPointerException(), ""); \ |
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395 } \ |
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396 VERIFY_OOP(obj_) |
0 | 397 |
398 #define VMdoubleConstZero() 0.0 | |
399 #define VMdoubleConstOne() 1.0 | |
400 #define VMlongConstZero() (max_jlong-max_jlong) | |
401 #define VMlongConstOne() ((max_jlong-max_jlong)+1) | |
402 | |
403 /* | |
404 * Alignment | |
405 */ | |
406 #define VMalignWordUp(val) (((uintptr_t)(val) + 3) & ~3) | |
407 | |
408 // Decache the interpreter state that interpreter modifies directly (i.e. GC is indirect mod) | |
409 #define DECACHE_STATE() DECACHE_PC(); DECACHE_TOS(); | |
410 | |
411 // Reload interpreter state after calling the VM or a possible GC | |
412 #define CACHE_STATE() \ | |
413 CACHE_TOS(); \ | |
414 CACHE_PC(); \ | |
415 CACHE_CP(); \ | |
416 CACHE_LOCALS(); | |
417 | |
418 // Call the VM don't check for pending exceptions | |
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419 #define CALL_VM_NOCHECK(func) \ |
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420 DECACHE_STATE(); \ |
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421 SET_LAST_JAVA_FRAME(); \ |
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422 func; \ |
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423 RESET_LAST_JAVA_FRAME(); \ |
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424 CACHE_STATE(); \ |
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425 if (THREAD->pop_frame_pending() && \ |
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426 !THREAD->pop_frame_in_process()) { \ |
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427 goto handle_Pop_Frame; \ |
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428 } \ |
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429 if (THREAD->jvmti_thread_state() && \ |
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430 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \ |
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431 goto handle_Early_Return; \ |
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432 } |
0 | 433 |
434 // Call the VM and check for pending exceptions | |
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435 #define CALL_VM(func, label) { \ |
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436 CALL_VM_NOCHECK(func); \ |
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437 if (THREAD->has_pending_exception()) goto label; \ |
0 | 438 } |
439 | |
440 /* | |
441 * BytecodeInterpreter::run(interpreterState istate) | |
442 * BytecodeInterpreter::runWithChecks(interpreterState istate) | |
443 * | |
444 * The real deal. This is where byte codes actually get interpreted. | |
445 * Basically it's a big while loop that iterates until we return from | |
446 * the method passed in. | |
447 * | |
448 * The runWithChecks is used if JVMTI is enabled. | |
449 * | |
450 */ | |
451 #if defined(VM_JVMTI) | |
452 void | |
453 BytecodeInterpreter::runWithChecks(interpreterState istate) { | |
454 #else | |
455 void | |
456 BytecodeInterpreter::run(interpreterState istate) { | |
457 #endif | |
458 | |
459 // In order to simplify some tests based on switches set at runtime | |
460 // we invoke the interpreter a single time after switches are enabled | |
461 // and set simpler to to test variables rather than method calls or complex | |
462 // boolean expressions. | |
463 | |
464 static int initialized = 0; | |
465 static int checkit = 0; | |
466 static intptr_t* c_addr = NULL; | |
467 static intptr_t c_value; | |
468 | |
469 if (checkit && *c_addr != c_value) { | |
470 os::breakpoint(); | |
471 } | |
472 #ifdef VM_JVMTI | |
473 static bool _jvmti_interp_events = 0; | |
474 #endif | |
475 | |
476 static int _compiling; // (UseCompiler || CountCompiledCalls) | |
477 | |
478 #ifdef ASSERT | |
479 if (istate->_msg != initialize) { | |
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480 // We have a problem here if we are running with a pre-hsx24 JDK (for example during bootstrap) |
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481 // because in that case, EnableInvokeDynamic is true by default but will be later switched off |
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482 // if java_lang_invoke_MethodHandle::compute_offsets() detects that the JDK only has the classes |
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483 // for the old JSR292 implementation. |
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484 // This leads to a situation where 'istate->_stack_limit' always accounts for |
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485 // methodOopDesc::extra_stack_entries() because it is computed in |
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486 // CppInterpreterGenerator::generate_compute_interpreter_state() which was generated while |
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487 // EnableInvokeDynamic was still true. On the other hand, istate->_method->max_stack() doesn't |
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488 // account for extra_stack_entries() anymore because at the time when it is called |
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489 // EnableInvokeDynamic was already set to false. |
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490 // So we have a second version of the assertion which handles the case where EnableInvokeDynamic was |
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491 // switched off because of the wrong classes. |
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492 if (EnableInvokeDynamic || FLAG_IS_CMDLINE(EnableInvokeDynamic)) { |
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493 assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit"); |
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494 } else { |
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495 const int extra_stack_entries = Method::extra_stack_entries_for_jsr292; |
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496 assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + extra_stack_entries |
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497 + 1), "bad stack limit"); |
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498 } |
1729 | 499 #ifndef SHARK |
500 IA32_ONLY(assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1, "wrong")); | |
501 #endif // !SHARK | |
0 | 502 } |
503 // Verify linkages. | |
504 interpreterState l = istate; | |
505 do { | |
506 assert(l == l->_self_link, "bad link"); | |
507 l = l->_prev_link; | |
508 } while (l != NULL); | |
509 // Screwups with stack management usually cause us to overwrite istate | |
510 // save a copy so we can verify it. | |
511 interpreterState orig = istate; | |
512 #endif | |
513 | |
514 register intptr_t* topOfStack = (intptr_t *)istate->stack(); /* access with STACK macros */ | |
515 register address pc = istate->bcp(); | |
516 register jubyte opcode; | |
517 register intptr_t* locals = istate->locals(); | |
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518 register ConstantPoolCache* cp = istate->constants(); // method()->constants()->cache() |
0 | 519 #ifdef LOTS_OF_REGS |
520 register JavaThread* THREAD = istate->thread(); | |
521 #else | |
522 #undef THREAD | |
523 #define THREAD istate->thread() | |
524 #endif | |
525 | |
526 #ifdef USELABELS | |
527 const static void* const opclabels_data[256] = { | |
528 /* 0x00 */ &&opc_nop, &&opc_aconst_null,&&opc_iconst_m1,&&opc_iconst_0, | |
529 /* 0x04 */ &&opc_iconst_1,&&opc_iconst_2, &&opc_iconst_3, &&opc_iconst_4, | |
530 /* 0x08 */ &&opc_iconst_5,&&opc_lconst_0, &&opc_lconst_1, &&opc_fconst_0, | |
531 /* 0x0C */ &&opc_fconst_1,&&opc_fconst_2, &&opc_dconst_0, &&opc_dconst_1, | |
532 | |
533 /* 0x10 */ &&opc_bipush, &&opc_sipush, &&opc_ldc, &&opc_ldc_w, | |
534 /* 0x14 */ &&opc_ldc2_w, &&opc_iload, &&opc_lload, &&opc_fload, | |
535 /* 0x18 */ &&opc_dload, &&opc_aload, &&opc_iload_0,&&opc_iload_1, | |
536 /* 0x1C */ &&opc_iload_2,&&opc_iload_3,&&opc_lload_0,&&opc_lload_1, | |
537 | |
538 /* 0x20 */ &&opc_lload_2,&&opc_lload_3,&&opc_fload_0,&&opc_fload_1, | |
539 /* 0x24 */ &&opc_fload_2,&&opc_fload_3,&&opc_dload_0,&&opc_dload_1, | |
540 /* 0x28 */ &&opc_dload_2,&&opc_dload_3,&&opc_aload_0,&&opc_aload_1, | |
541 /* 0x2C */ &&opc_aload_2,&&opc_aload_3,&&opc_iaload, &&opc_laload, | |
542 | |
543 /* 0x30 */ &&opc_faload, &&opc_daload, &&opc_aaload, &&opc_baload, | |
544 /* 0x34 */ &&opc_caload, &&opc_saload, &&opc_istore, &&opc_lstore, | |
545 /* 0x38 */ &&opc_fstore, &&opc_dstore, &&opc_astore, &&opc_istore_0, | |
546 /* 0x3C */ &&opc_istore_1,&&opc_istore_2,&&opc_istore_3,&&opc_lstore_0, | |
547 | |
548 /* 0x40 */ &&opc_lstore_1,&&opc_lstore_2,&&opc_lstore_3,&&opc_fstore_0, | |
549 /* 0x44 */ &&opc_fstore_1,&&opc_fstore_2,&&opc_fstore_3,&&opc_dstore_0, | |
550 /* 0x48 */ &&opc_dstore_1,&&opc_dstore_2,&&opc_dstore_3,&&opc_astore_0, | |
551 /* 0x4C */ &&opc_astore_1,&&opc_astore_2,&&opc_astore_3,&&opc_iastore, | |
552 | |
553 /* 0x50 */ &&opc_lastore,&&opc_fastore,&&opc_dastore,&&opc_aastore, | |
554 /* 0x54 */ &&opc_bastore,&&opc_castore,&&opc_sastore,&&opc_pop, | |
555 /* 0x58 */ &&opc_pop2, &&opc_dup, &&opc_dup_x1, &&opc_dup_x2, | |
556 /* 0x5C */ &&opc_dup2, &&opc_dup2_x1,&&opc_dup2_x2,&&opc_swap, | |
557 | |
558 /* 0x60 */ &&opc_iadd,&&opc_ladd,&&opc_fadd,&&opc_dadd, | |
559 /* 0x64 */ &&opc_isub,&&opc_lsub,&&opc_fsub,&&opc_dsub, | |
560 /* 0x68 */ &&opc_imul,&&opc_lmul,&&opc_fmul,&&opc_dmul, | |
561 /* 0x6C */ &&opc_idiv,&&opc_ldiv,&&opc_fdiv,&&opc_ddiv, | |
562 | |
563 /* 0x70 */ &&opc_irem, &&opc_lrem, &&opc_frem,&&opc_drem, | |
564 /* 0x74 */ &&opc_ineg, &&opc_lneg, &&opc_fneg,&&opc_dneg, | |
565 /* 0x78 */ &&opc_ishl, &&opc_lshl, &&opc_ishr,&&opc_lshr, | |
566 /* 0x7C */ &&opc_iushr,&&opc_lushr,&&opc_iand,&&opc_land, | |
567 | |
568 /* 0x80 */ &&opc_ior, &&opc_lor,&&opc_ixor,&&opc_lxor, | |
569 /* 0x84 */ &&opc_iinc,&&opc_i2l,&&opc_i2f, &&opc_i2d, | |
570 /* 0x88 */ &&opc_l2i, &&opc_l2f,&&opc_l2d, &&opc_f2i, | |
571 /* 0x8C */ &&opc_f2l, &&opc_f2d,&&opc_d2i, &&opc_d2l, | |
572 | |
573 /* 0x90 */ &&opc_d2f, &&opc_i2b, &&opc_i2c, &&opc_i2s, | |
574 /* 0x94 */ &&opc_lcmp, &&opc_fcmpl,&&opc_fcmpg,&&opc_dcmpl, | |
575 /* 0x98 */ &&opc_dcmpg,&&opc_ifeq, &&opc_ifne, &&opc_iflt, | |
576 /* 0x9C */ &&opc_ifge, &&opc_ifgt, &&opc_ifle, &&opc_if_icmpeq, | |
577 | |
578 /* 0xA0 */ &&opc_if_icmpne,&&opc_if_icmplt,&&opc_if_icmpge, &&opc_if_icmpgt, | |
579 /* 0xA4 */ &&opc_if_icmple,&&opc_if_acmpeq,&&opc_if_acmpne, &&opc_goto, | |
580 /* 0xA8 */ &&opc_jsr, &&opc_ret, &&opc_tableswitch,&&opc_lookupswitch, | |
581 /* 0xAC */ &&opc_ireturn, &&opc_lreturn, &&opc_freturn, &&opc_dreturn, | |
582 | |
583 /* 0xB0 */ &&opc_areturn, &&opc_return, &&opc_getstatic, &&opc_putstatic, | |
584 /* 0xB4 */ &&opc_getfield, &&opc_putfield, &&opc_invokevirtual,&&opc_invokespecial, | |
2480 | 585 /* 0xB8 */ &&opc_invokestatic,&&opc_invokeinterface,&&opc_invokedynamic,&&opc_new, |
0 | 586 /* 0xBC */ &&opc_newarray, &&opc_anewarray, &&opc_arraylength, &&opc_athrow, |
587 | |
588 /* 0xC0 */ &&opc_checkcast, &&opc_instanceof, &&opc_monitorenter, &&opc_monitorexit, | |
589 /* 0xC4 */ &&opc_wide, &&opc_multianewarray, &&opc_ifnull, &&opc_ifnonnull, | |
123 | 590 /* 0xC8 */ &&opc_goto_w, &&opc_jsr_w, &&opc_breakpoint, &&opc_default, |
591 /* 0xCC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
592 | |
593 /* 0xD0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
0 | 594 /* 0xD4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
595 /* 0xD8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
596 /* 0xDC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
597 | |
598 /* 0xE0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
2480 | 599 /* 0xE4 */ &&opc_default, &&opc_fast_aldc, &&opc_fast_aldc_w, &&opc_return_register_finalizer, |
6926 | 600 /* 0xE8 */ &&opc_invokehandle,&&opc_default, &&opc_default, &&opc_default, |
0 | 601 /* 0xEC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
602 | |
603 /* 0xF0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
604 /* 0xF4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
605 /* 0xF8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
606 /* 0xFC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default | |
607 }; | |
608 register uintptr_t *dispatch_table = (uintptr_t*)&opclabels_data[0]; | |
609 #endif /* USELABELS */ | |
610 | |
611 #ifdef ASSERT | |
612 // this will trigger a VERIFY_OOP on entry | |
613 if (istate->msg() != initialize && ! METHOD->is_static()) { | |
614 oop rcvr = LOCALS_OBJECT(0); | |
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615 VERIFY_OOP(rcvr); |
0 | 616 } |
617 #endif | |
618 // #define HACK | |
619 #ifdef HACK | |
620 bool interesting = false; | |
621 #endif // HACK | |
622 | |
623 /* QQQ this should be a stack method so we don't know actual direction */ | |
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624 guarantee(istate->msg() == initialize || |
0 | 625 topOfStack >= istate->stack_limit() && |
626 topOfStack < istate->stack_base(), | |
627 "Stack top out of range"); | |
628 | |
629 switch (istate->msg()) { | |
630 case initialize: { | |
631 if (initialized++) ShouldNotReachHere(); // Only one initialize call | |
632 _compiling = (UseCompiler || CountCompiledCalls); | |
633 #ifdef VM_JVMTI | |
634 _jvmti_interp_events = JvmtiExport::can_post_interpreter_events(); | |
635 #endif | |
636 return; | |
637 } | |
638 break; | |
639 case method_entry: { | |
640 THREAD->set_do_not_unlock(); | |
641 // count invocations | |
642 assert(initialized, "Interpreter not initialized"); | |
643 if (_compiling) { | |
10233 | 644 MethodCounters* mcs; |
645 GET_METHOD_COUNTERS(mcs); | |
0 | 646 if (ProfileInterpreter) { |
10233 | 647 METHOD->increment_interpreter_invocation_count(THREAD); |
0 | 648 } |
10233 | 649 mcs->invocation_counter()->increment(); |
650 if (mcs->invocation_counter()->reached_InvocationLimit()) { | |
0 | 651 CALL_VM((void)InterpreterRuntime::frequency_counter_overflow(THREAD, NULL), handle_exception); |
652 | |
653 // We no longer retry on a counter overflow | |
654 | |
655 // istate->set_msg(retry_method); | |
656 // THREAD->clr_do_not_unlock(); | |
657 // return; | |
658 } | |
659 SAFEPOINT; | |
660 } | |
661 | |
662 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
663 // initialize | |
664 os::breakpoint(); | |
665 } | |
666 | |
667 #ifdef HACK | |
668 { | |
669 ResourceMark rm; | |
670 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
671 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
672 tty->print_cr("entering: depth %d bci: %d", | |
673 (istate->_stack_base - istate->_stack), | |
674 istate->_bcp - istate->_method->code_base()); | |
675 interesting = true; | |
676 } | |
677 } | |
678 #endif // HACK | |
679 | |
680 | |
681 // lock method if synchronized | |
682 if (METHOD->is_synchronized()) { | |
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683 // oop rcvr = locals[0].j.r; |
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684 oop rcvr; |
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685 if (METHOD->is_static()) { |
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686 rcvr = METHOD->constants()->pool_holder()->java_mirror(); |
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687 } else { |
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688 rcvr = LOCALS_OBJECT(0); |
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689 VERIFY_OOP(rcvr); |
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690 } |
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691 // The initial monitor is ours for the taking |
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692 // Monitor not filled in frame manager any longer as this caused race condition with biased locking. |
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693 BasicObjectLock* mon = &istate->monitor_base()[-1]; |
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694 mon->set_obj(rcvr); |
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695 bool success = false; |
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696 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place; |
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697 markOop mark = rcvr->mark(); |
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698 intptr_t hash = (intptr_t) markOopDesc::no_hash; |
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699 // Implies UseBiasedLocking. |
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700 if (mark->has_bias_pattern()) { |
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701 uintptr_t thread_ident; |
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702 uintptr_t anticipated_bias_locking_value; |
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703 thread_ident = (uintptr_t)istate->thread(); |
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704 anticipated_bias_locking_value = |
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705 (((uintptr_t)rcvr->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) & |
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706 ~((uintptr_t) markOopDesc::age_mask_in_place); |
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707 |
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708 if (anticipated_bias_locking_value == 0) { |
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709 // Already biased towards this thread, nothing to do. |
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710 if (PrintBiasedLockingStatistics) { |
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711 (* BiasedLocking::biased_lock_entry_count_addr())++; |
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712 } |
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713 success = true; |
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714 } else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) { |
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715 // Try to revoke bias. |
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716 markOop header = rcvr->klass()->prototype_header(); |
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717 if (hash != markOopDesc::no_hash) { |
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718 header = header->copy_set_hash(hash); |
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719 } |
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720 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), mark) == mark) { |
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721 if (PrintBiasedLockingStatistics) |
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722 (*BiasedLocking::revoked_lock_entry_count_addr())++; |
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723 } |
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724 } else if ((anticipated_bias_locking_value & epoch_mask_in_place) != 0) { |
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725 // Try to rebias. |
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726 markOop new_header = (markOop) ( (intptr_t) rcvr->klass()->prototype_header() | thread_ident); |
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727 if (hash != markOopDesc::no_hash) { |
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728 new_header = new_header->copy_set_hash(hash); |
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729 } |
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730 if (Atomic::cmpxchg_ptr((void*)new_header, rcvr->mark_addr(), mark) == mark) { |
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731 if (PrintBiasedLockingStatistics) { |
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732 (* BiasedLocking::rebiased_lock_entry_count_addr())++; |
0 | 733 } |
734 } else { | |
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735 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); |
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736 } |
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737 success = true; |
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738 } else { |
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739 // Try to bias towards thread in case object is anonymously biased. |
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740 markOop header = (markOop) ((uintptr_t) mark & |
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741 ((uintptr_t)markOopDesc::biased_lock_mask_in_place | |
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742 (uintptr_t)markOopDesc::age_mask_in_place | epoch_mask_in_place)); |
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743 if (hash != markOopDesc::no_hash) { |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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744 header = header->copy_set_hash(hash); |
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745 } |
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746 markOop new_header = (markOop) ((uintptr_t) header | thread_ident); |
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|
747 // Debugging hint. |
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748 DEBUG_ONLY(mon->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);) |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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749 if (Atomic::cmpxchg_ptr((void*)new_header, rcvr->mark_addr(), header) == header) { |
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750 if (PrintBiasedLockingStatistics) { |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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751 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++; |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
752 } |
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|
753 } else { |
48d3d0eb193b
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|
754 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
755 } |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
756 success = true; |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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changeset
|
757 } |
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changeset
|
758 } |
48d3d0eb193b
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changeset
|
759 |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
760 // Traditional lightweight locking. |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
761 if (!success) { |
48d3d0eb193b
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|
762 markOop displaced = rcvr->mark()->set_unlocked(); |
48d3d0eb193b
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|
763 mon->lock()->set_displaced_header(displaced); |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
764 bool call_vm = UseHeavyMonitors; |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
765 if (call_vm || Atomic::cmpxchg_ptr(mon, rcvr->mark_addr(), displaced) != displaced) { |
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|
766 // Is it simple recursive case? |
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|
767 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { |
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|
768 mon->lock()->set_displaced_header(NULL); |
48d3d0eb193b
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|
769 } else { |
48d3d0eb193b
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|
770 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); |
0 | 771 } |
772 } | |
14395
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773 } |
0 | 774 } |
775 THREAD->clr_do_not_unlock(); | |
776 | |
777 // Notify jvmti | |
778 #ifdef VM_JVMTI | |
779 if (_jvmti_interp_events) { | |
780 // Whenever JVMTI puts a thread in interp_only_mode, method | |
781 // entry/exit events are sent for that thread to track stack depth. | |
782 if (THREAD->is_interp_only_mode()) { | |
783 CALL_VM(InterpreterRuntime::post_method_entry(THREAD), | |
784 handle_exception); | |
785 } | |
786 } | |
787 #endif /* VM_JVMTI */ | |
788 | |
789 goto run; | |
790 } | |
791 | |
792 case popping_frame: { | |
793 // returned from a java call to pop the frame, restart the call | |
794 // clear the message so we don't confuse ourselves later | |
795 assert(THREAD->pop_frame_in_process(), "wrong frame pop state"); | |
796 istate->set_msg(no_request); | |
797 THREAD->clr_pop_frame_in_process(); | |
798 goto run; | |
799 } | |
800 | |
801 case method_resume: { | |
802 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
803 // resume | |
804 os::breakpoint(); | |
805 } | |
806 #ifdef HACK | |
807 { | |
808 ResourceMark rm; | |
809 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
810 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
811 tty->print_cr("resume: depth %d bci: %d", | |
812 (istate->_stack_base - istate->_stack) , | |
813 istate->_bcp - istate->_method->code_base()); | |
814 interesting = true; | |
815 } | |
816 } | |
817 #endif // HACK | |
818 // returned from a java call, continue executing. | |
819 if (THREAD->pop_frame_pending() && !THREAD->pop_frame_in_process()) { | |
820 goto handle_Pop_Frame; | |
821 } | |
14400
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
822 if (THREAD->jvmti_thread_state() && |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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changeset
|
823 THREAD->jvmti_thread_state()->is_earlyret_pending()) { |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
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|
824 goto handle_Early_Return; |
bfd9d884693d
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825 } |
0 | 826 |
827 if (THREAD->has_pending_exception()) goto handle_exception; | |
828 // Update the pc by the saved amount of the invoke bytecode size | |
829 UPDATE_PC(istate->bcp_advance()); | |
830 goto run; | |
831 } | |
832 | |
833 case deopt_resume2: { | |
834 // Returned from an opcode that will reexecute. Deopt was | |
835 // a result of a PopFrame request. | |
836 // | |
837 goto run; | |
838 } | |
839 | |
840 case deopt_resume: { | |
841 // Returned from an opcode that has completed. The stack has | |
842 // the result all we need to do is skip across the bytecode | |
843 // and continue (assuming there is no exception pending) | |
844 // | |
845 // compute continuation length | |
846 // | |
847 // Note: it is possible to deopt at a return_register_finalizer opcode | |
848 // because this requires entering the vm to do the registering. While the | |
849 // opcode is complete we can't advance because there are no more opcodes | |
850 // much like trying to deopt at a poll return. In that has we simply | |
851 // get out of here | |
852 // | |
2142 | 853 if ( Bytecodes::code_at(METHOD, pc) == Bytecodes::_return_register_finalizer) { |
0 | 854 // this will do the right thing even if an exception is pending. |
855 goto handle_return; | |
856 } | |
2142 | 857 UPDATE_PC(Bytecodes::length_at(METHOD, pc)); |
0 | 858 if (THREAD->has_pending_exception()) goto handle_exception; |
859 goto run; | |
860 } | |
861 case got_monitors: { | |
862 // continue locking now that we have a monitor to use | |
863 // we expect to find newly allocated monitor at the "top" of the monitor stack. | |
864 oop lockee = STACK_OBJECT(-1); | |
1681
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865 VERIFY_OOP(lockee); |
0 | 866 // derefing's lockee ought to provoke implicit null check |
867 // find a free monitor | |
868 BasicObjectLock* entry = (BasicObjectLock*) istate->stack_base(); | |
869 assert(entry->obj() == NULL, "Frame manager didn't allocate the monitor"); | |
870 entry->set_obj(lockee); | |
14395
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|
871 bool success = false; |
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872 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place; |
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|
873 |
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|
874 markOop mark = lockee->mark(); |
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875 intptr_t hash = (intptr_t) markOopDesc::no_hash; |
48d3d0eb193b
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|
876 // implies UseBiasedLocking |
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|
877 if (mark->has_bias_pattern()) { |
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|
878 uintptr_t thread_ident; |
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|
879 uintptr_t anticipated_bias_locking_value; |
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880 thread_ident = (uintptr_t)istate->thread(); |
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881 anticipated_bias_locking_value = |
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882 (((uintptr_t)lockee->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) & |
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883 ~((uintptr_t) markOopDesc::age_mask_in_place); |
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|
884 |
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|
885 if (anticipated_bias_locking_value == 0) { |
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886 // already biased towards this thread, nothing to do |
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887 if (PrintBiasedLockingStatistics) { |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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888 (* BiasedLocking::biased_lock_entry_count_addr())++; |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
889 } |
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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890 success = true; |
48d3d0eb193b
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891 } else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) { |
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|
892 // try revoke bias |
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893 markOop header = lockee->klass()->prototype_header(); |
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894 if (hash != markOopDesc::no_hash) { |
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895 header = header->copy_set_hash(hash); |
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896 } |
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897 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), mark) == mark) { |
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898 if (PrintBiasedLockingStatistics) { |
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899 (*BiasedLocking::revoked_lock_entry_count_addr())++; |
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900 } |
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901 } |
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902 } else if ((anticipated_bias_locking_value & epoch_mask_in_place) !=0) { |
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903 // try rebias |
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904 markOop new_header = (markOop) ( (intptr_t) lockee->klass()->prototype_header() | thread_ident); |
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905 if (hash != markOopDesc::no_hash) { |
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906 new_header = new_header->copy_set_hash(hash); |
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907 } |
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908 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), mark) == mark) { |
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909 if (PrintBiasedLockingStatistics) { |
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910 (* BiasedLocking::rebiased_lock_entry_count_addr())++; |
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911 } |
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912 } else { |
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913 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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914 } |
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915 success = true; |
0 | 916 } else { |
14395
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917 // try to bias towards thread in case object is anonymously biased |
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918 markOop header = (markOop) ((uintptr_t) mark & ((uintptr_t)markOopDesc::biased_lock_mask_in_place | |
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919 (uintptr_t)markOopDesc::age_mask_in_place | epoch_mask_in_place)); |
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920 if (hash != markOopDesc::no_hash) { |
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921 header = header->copy_set_hash(hash); |
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922 } |
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923 markOop new_header = (markOop) ((uintptr_t) header | thread_ident); |
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924 // debugging hint |
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925 DEBUG_ONLY(entry->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);) |
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926 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), header) == header) { |
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927 if (PrintBiasedLockingStatistics) { |
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928 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++; |
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929 } |
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930 } else { |
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931 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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932 } |
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933 success = true; |
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934 } |
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935 } |
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936 |
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937 // traditional lightweight locking |
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938 if (!success) { |
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939 markOop displaced = lockee->mark()->set_unlocked(); |
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940 entry->lock()->set_displaced_header(displaced); |
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941 bool call_vm = UseHeavyMonitors; |
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942 if (call_vm || Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { |
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943 // Is it simple recursive case? |
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944 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { |
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945 entry->lock()->set_displaced_header(NULL); |
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946 } else { |
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947 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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948 } |
0 | 949 } |
950 } | |
951 UPDATE_PC_AND_TOS(1, -1); | |
952 goto run; | |
953 } | |
954 default: { | |
955 fatal("Unexpected message from frame manager"); | |
956 } | |
957 } | |
958 | |
959 run: | |
960 | |
961 DO_UPDATE_INSTRUCTION_COUNT(*pc) | |
962 DEBUGGER_SINGLE_STEP_NOTIFY(); | |
963 #ifdef PREFETCH_OPCCODE | |
964 opcode = *pc; /* prefetch first opcode */ | |
965 #endif | |
966 | |
967 #ifndef USELABELS | |
968 while (1) | |
969 #endif | |
970 { | |
971 #ifndef PREFETCH_OPCCODE | |
972 opcode = *pc; | |
973 #endif | |
974 // Seems like this happens twice per opcode. At worst this is only | |
975 // need at entry to the loop. | |
976 // DEBUGGER_SINGLE_STEP_NOTIFY(); | |
977 /* Using this labels avoids double breakpoints when quickening and | |
978 * when returing from transition frames. | |
979 */ | |
980 opcode_switch: | |
981 assert(istate == orig, "Corrupted istate"); | |
982 /* QQQ Hmm this has knowledge of direction, ought to be a stack method */ | |
983 assert(topOfStack >= istate->stack_limit(), "Stack overrun"); | |
984 assert(topOfStack < istate->stack_base(), "Stack underrun"); | |
985 | |
986 #ifdef USELABELS | |
987 DISPATCH(opcode); | |
988 #else | |
989 switch (opcode) | |
990 #endif | |
991 { | |
992 CASE(_nop): | |
993 UPDATE_PC_AND_CONTINUE(1); | |
994 | |
995 /* Push miscellaneous constants onto the stack. */ | |
996 | |
997 CASE(_aconst_null): | |
998 SET_STACK_OBJECT(NULL, 0); | |
999 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1000 | |
1001 #undef OPC_CONST_n | |
1002 #define OPC_CONST_n(opcode, const_type, value) \ | |
1003 CASE(opcode): \ | |
1004 SET_STACK_ ## const_type(value, 0); \ | |
1005 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1006 | |
1007 OPC_CONST_n(_iconst_m1, INT, -1); | |
1008 OPC_CONST_n(_iconst_0, INT, 0); | |
1009 OPC_CONST_n(_iconst_1, INT, 1); | |
1010 OPC_CONST_n(_iconst_2, INT, 2); | |
1011 OPC_CONST_n(_iconst_3, INT, 3); | |
1012 OPC_CONST_n(_iconst_4, INT, 4); | |
1013 OPC_CONST_n(_iconst_5, INT, 5); | |
1014 OPC_CONST_n(_fconst_0, FLOAT, 0.0); | |
1015 OPC_CONST_n(_fconst_1, FLOAT, 1.0); | |
1016 OPC_CONST_n(_fconst_2, FLOAT, 2.0); | |
1017 | |
1018 #undef OPC_CONST2_n | |
1019 #define OPC_CONST2_n(opcname, value, key, kind) \ | |
1020 CASE(_##opcname): \ | |
1021 { \ | |
1022 SET_STACK_ ## kind(VM##key##Const##value(), 1); \ | |
1023 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
1024 } | |
1025 OPC_CONST2_n(dconst_0, Zero, double, DOUBLE); | |
1026 OPC_CONST2_n(dconst_1, One, double, DOUBLE); | |
1027 OPC_CONST2_n(lconst_0, Zero, long, LONG); | |
1028 OPC_CONST2_n(lconst_1, One, long, LONG); | |
1029 | |
1030 /* Load constant from constant pool: */ | |
1031 | |
1032 /* Push a 1-byte signed integer value onto the stack. */ | |
1033 CASE(_bipush): | |
1034 SET_STACK_INT((jbyte)(pc[1]), 0); | |
1035 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
1036 | |
1037 /* Push a 2-byte signed integer constant onto the stack. */ | |
1038 CASE(_sipush): | |
1039 SET_STACK_INT((int16_t)Bytes::get_Java_u2(pc + 1), 0); | |
1040 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
1041 | |
1042 /* load from local variable */ | |
1043 | |
1044 CASE(_aload): | |
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1045 VERIFY_OOP(LOCALS_OBJECT(pc[1])); |
0 | 1046 SET_STACK_OBJECT(LOCALS_OBJECT(pc[1]), 0); |
1047 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
1048 | |
1049 CASE(_iload): | |
1050 CASE(_fload): | |
1051 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0); | |
1052 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
1053 | |
1054 CASE(_lload): | |
1055 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(pc[1]), 1); | |
1056 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
1057 | |
1058 CASE(_dload): | |
1059 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(pc[1]), 1); | |
1060 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
1061 | |
1062 #undef OPC_LOAD_n | |
1063 #define OPC_LOAD_n(num) \ | |
1064 CASE(_aload_##num): \ | |
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1065 VERIFY_OOP(LOCALS_OBJECT(num)); \ |
0 | 1066 SET_STACK_OBJECT(LOCALS_OBJECT(num), 0); \ |
1067 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
1068 \ | |
1069 CASE(_iload_##num): \ | |
1070 CASE(_fload_##num): \ | |
1071 SET_STACK_SLOT(LOCALS_SLOT(num), 0); \ | |
1072 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
1073 \ | |
1074 CASE(_lload_##num): \ | |
1075 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(num), 1); \ | |
1076 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
1077 CASE(_dload_##num): \ | |
1078 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(num), 1); \ | |
1079 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1080 | |
1081 OPC_LOAD_n(0); | |
1082 OPC_LOAD_n(1); | |
1083 OPC_LOAD_n(2); | |
1084 OPC_LOAD_n(3); | |
1085 | |
1086 /* store to a local variable */ | |
1087 | |
1088 CASE(_astore): | |
1089 astore(topOfStack, -1, locals, pc[1]); | |
1090 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
1091 | |
1092 CASE(_istore): | |
1093 CASE(_fstore): | |
1094 SET_LOCALS_SLOT(STACK_SLOT(-1), pc[1]); | |
1095 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
1096 | |
1097 CASE(_lstore): | |
1098 SET_LOCALS_LONG(STACK_LONG(-1), pc[1]); | |
1099 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
1100 | |
1101 CASE(_dstore): | |
1102 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), pc[1]); | |
1103 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
1104 | |
1105 CASE(_wide): { | |
1106 uint16_t reg = Bytes::get_Java_u2(pc + 2); | |
1107 | |
1108 opcode = pc[1]; | |
1109 switch(opcode) { | |
1110 case Bytecodes::_aload: | |
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1111 VERIFY_OOP(LOCALS_OBJECT(reg)); |
0 | 1112 SET_STACK_OBJECT(LOCALS_OBJECT(reg), 0); |
1113 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
1114 | |
1115 case Bytecodes::_iload: | |
1116 case Bytecodes::_fload: | |
1117 SET_STACK_SLOT(LOCALS_SLOT(reg), 0); | |
1118 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
1119 | |
1120 case Bytecodes::_lload: | |
1121 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
1122 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
1123 | |
1124 case Bytecodes::_dload: | |
1125 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
1126 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
1127 | |
1128 case Bytecodes::_astore: | |
1129 astore(topOfStack, -1, locals, reg); | |
1130 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
1131 | |
1132 case Bytecodes::_istore: | |
1133 case Bytecodes::_fstore: | |
1134 SET_LOCALS_SLOT(STACK_SLOT(-1), reg); | |
1135 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
1136 | |
1137 case Bytecodes::_lstore: | |
1138 SET_LOCALS_LONG(STACK_LONG(-1), reg); | |
1139 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
1140 | |
1141 case Bytecodes::_dstore: | |
1142 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), reg); | |
1143 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
1144 | |
1145 case Bytecodes::_iinc: { | |
1146 int16_t offset = (int16_t)Bytes::get_Java_u2(pc+4); | |
1147 // Be nice to see what this generates.... QQQ | |
1148 SET_LOCALS_INT(LOCALS_INT(reg) + offset, reg); | |
1149 UPDATE_PC_AND_CONTINUE(6); | |
1150 } | |
1151 case Bytecodes::_ret: | |
1152 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(reg)); | |
1153 UPDATE_PC_AND_CONTINUE(0); | |
1154 default: | |
1155 VM_JAVA_ERROR(vmSymbols::java_lang_InternalError(), "undefined opcode"); | |
1156 } | |
1157 } | |
1158 | |
1159 | |
1160 #undef OPC_STORE_n | |
1161 #define OPC_STORE_n(num) \ | |
1162 CASE(_astore_##num): \ | |
1163 astore(topOfStack, -1, locals, num); \ | |
1164 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1165 CASE(_istore_##num): \ | |
1166 CASE(_fstore_##num): \ | |
1167 SET_LOCALS_SLOT(STACK_SLOT(-1), num); \ | |
1168 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1169 | |
1170 OPC_STORE_n(0); | |
1171 OPC_STORE_n(1); | |
1172 OPC_STORE_n(2); | |
1173 OPC_STORE_n(3); | |
1174 | |
1175 #undef OPC_DSTORE_n | |
1176 #define OPC_DSTORE_n(num) \ | |
1177 CASE(_dstore_##num): \ | |
1178 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), num); \ | |
1179 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1180 CASE(_lstore_##num): \ | |
1181 SET_LOCALS_LONG(STACK_LONG(-1), num); \ | |
1182 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
1183 | |
1184 OPC_DSTORE_n(0); | |
1185 OPC_DSTORE_n(1); | |
1186 OPC_DSTORE_n(2); | |
1187 OPC_DSTORE_n(3); | |
1188 | |
1189 /* stack pop, dup, and insert opcodes */ | |
1190 | |
1191 | |
1192 CASE(_pop): /* Discard the top item on the stack */ | |
1193 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1194 | |
1195 | |
1196 CASE(_pop2): /* Discard the top 2 items on the stack */ | |
1197 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
1198 | |
1199 | |
1200 CASE(_dup): /* Duplicate the top item on the stack */ | |
1201 dup(topOfStack); | |
1202 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1203 | |
1204 CASE(_dup2): /* Duplicate the top 2 items on the stack */ | |
1205 dup2(topOfStack); | |
1206 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1207 | |
1208 CASE(_dup_x1): /* insert top word two down */ | |
1209 dup_x1(topOfStack); | |
1210 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1211 | |
1212 CASE(_dup_x2): /* insert top word three down */ | |
1213 dup_x2(topOfStack); | |
1214 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1215 | |
1216 CASE(_dup2_x1): /* insert top 2 slots three down */ | |
1217 dup2_x1(topOfStack); | |
1218 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1219 | |
1220 CASE(_dup2_x2): /* insert top 2 slots four down */ | |
1221 dup2_x2(topOfStack); | |
1222 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1223 | |
1224 CASE(_swap): { /* swap top two elements on the stack */ | |
1225 swap(topOfStack); | |
1226 UPDATE_PC_AND_CONTINUE(1); | |
1227 } | |
1228 | |
1229 /* Perform various binary integer operations */ | |
1230 | |
1231 #undef OPC_INT_BINARY | |
1232 #define OPC_INT_BINARY(opcname, opname, test) \ | |
1233 CASE(_i##opcname): \ | |
1234 if (test && (STACK_INT(-1) == 0)) { \ | |
1235 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
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1236 "/ by zero"); \ |
0 | 1237 } \ |
1238 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
1239 STACK_INT(-1)), \ | |
1240 -2); \ | |
1241 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1242 CASE(_l##opcname): \ | |
1243 { \ | |
1244 if (test) { \ | |
1245 jlong l1 = STACK_LONG(-1); \ | |
1246 if (VMlongEqz(l1)) { \ | |
1247 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
1248 "/ by long zero"); \ | |
1249 } \ | |
1250 } \ | |
1251 /* First long at (-1,-2) next long at (-3,-4) */ \ | |
1252 SET_STACK_LONG(VMlong##opname(STACK_LONG(-3), \ | |
1253 STACK_LONG(-1)), \ | |
1254 -3); \ | |
1255 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1256 } | |
1257 | |
1258 OPC_INT_BINARY(add, Add, 0); | |
1259 OPC_INT_BINARY(sub, Sub, 0); | |
1260 OPC_INT_BINARY(mul, Mul, 0); | |
1261 OPC_INT_BINARY(and, And, 0); | |
1262 OPC_INT_BINARY(or, Or, 0); | |
1263 OPC_INT_BINARY(xor, Xor, 0); | |
1264 OPC_INT_BINARY(div, Div, 1); | |
1265 OPC_INT_BINARY(rem, Rem, 1); | |
1266 | |
1267 | |
1268 /* Perform various binary floating number operations */ | |
1269 /* On some machine/platforms/compilers div zero check can be implicit */ | |
1270 | |
1271 #undef OPC_FLOAT_BINARY | |
1272 #define OPC_FLOAT_BINARY(opcname, opname) \ | |
1273 CASE(_d##opcname): { \ | |
1274 SET_STACK_DOUBLE(VMdouble##opname(STACK_DOUBLE(-3), \ | |
1275 STACK_DOUBLE(-1)), \ | |
1276 -3); \ | |
1277 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1278 } \ | |
1279 CASE(_f##opcname): \ | |
1280 SET_STACK_FLOAT(VMfloat##opname(STACK_FLOAT(-2), \ | |
1281 STACK_FLOAT(-1)), \ | |
1282 -2); \ | |
1283 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1284 | |
1285 | |
1286 OPC_FLOAT_BINARY(add, Add); | |
1287 OPC_FLOAT_BINARY(sub, Sub); | |
1288 OPC_FLOAT_BINARY(mul, Mul); | |
1289 OPC_FLOAT_BINARY(div, Div); | |
1290 OPC_FLOAT_BINARY(rem, Rem); | |
1291 | |
1292 /* Shift operations | |
1293 * Shift left int and long: ishl, lshl | |
1294 * Logical shift right int and long w/zero extension: iushr, lushr | |
1295 * Arithmetic shift right int and long w/sign extension: ishr, lshr | |
1296 */ | |
1297 | |
1298 #undef OPC_SHIFT_BINARY | |
1299 #define OPC_SHIFT_BINARY(opcname, opname) \ | |
1300 CASE(_i##opcname): \ | |
1301 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
1302 STACK_INT(-1)), \ | |
1303 -2); \ | |
1304 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1305 CASE(_l##opcname): \ | |
1306 { \ | |
1307 SET_STACK_LONG(VMlong##opname(STACK_LONG(-2), \ | |
1308 STACK_INT(-1)), \ | |
1309 -2); \ | |
1310 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1311 } | |
1312 | |
1313 OPC_SHIFT_BINARY(shl, Shl); | |
1314 OPC_SHIFT_BINARY(shr, Shr); | |
1315 OPC_SHIFT_BINARY(ushr, Ushr); | |
1316 | |
1317 /* Increment local variable by constant */ | |
1318 CASE(_iinc): | |
1319 { | |
1320 // locals[pc[1]].j.i += (jbyte)(pc[2]); | |
1321 SET_LOCALS_INT(LOCALS_INT(pc[1]) + (jbyte)(pc[2]), pc[1]); | |
1322 UPDATE_PC_AND_CONTINUE(3); | |
1323 } | |
1324 | |
1325 /* negate the value on the top of the stack */ | |
1326 | |
1327 CASE(_ineg): | |
1328 SET_STACK_INT(VMintNeg(STACK_INT(-1)), -1); | |
1329 UPDATE_PC_AND_CONTINUE(1); | |
1330 | |
1331 CASE(_fneg): | |
1332 SET_STACK_FLOAT(VMfloatNeg(STACK_FLOAT(-1)), -1); | |
1333 UPDATE_PC_AND_CONTINUE(1); | |
1334 | |
1335 CASE(_lneg): | |
1336 { | |
1337 SET_STACK_LONG(VMlongNeg(STACK_LONG(-1)), -1); | |
1338 UPDATE_PC_AND_CONTINUE(1); | |
1339 } | |
1340 | |
1341 CASE(_dneg): | |
1342 { | |
1343 SET_STACK_DOUBLE(VMdoubleNeg(STACK_DOUBLE(-1)), -1); | |
1344 UPDATE_PC_AND_CONTINUE(1); | |
1345 } | |
1346 | |
1347 /* Conversion operations */ | |
1348 | |
1349 CASE(_i2f): /* convert top of stack int to float */ | |
1350 SET_STACK_FLOAT(VMint2Float(STACK_INT(-1)), -1); | |
1351 UPDATE_PC_AND_CONTINUE(1); | |
1352 | |
1353 CASE(_i2l): /* convert top of stack int to long */ | |
1354 { | |
1355 // this is ugly QQQ | |
1356 jlong r = VMint2Long(STACK_INT(-1)); | |
1357 MORE_STACK(-1); // Pop | |
1358 SET_STACK_LONG(r, 1); | |
1359 | |
1360 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1361 } | |
1362 | |
1363 CASE(_i2d): /* convert top of stack int to double */ | |
1364 { | |
1365 // this is ugly QQQ (why cast to jlong?? ) | |
1366 jdouble r = (jlong)STACK_INT(-1); | |
1367 MORE_STACK(-1); // Pop | |
1368 SET_STACK_DOUBLE(r, 1); | |
1369 | |
1370 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1371 } | |
1372 | |
1373 CASE(_l2i): /* convert top of stack long to int */ | |
1374 { | |
1375 jint r = VMlong2Int(STACK_LONG(-1)); | |
1376 MORE_STACK(-2); // Pop | |
1377 SET_STACK_INT(r, 0); | |
1378 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1379 } | |
1380 | |
1381 CASE(_l2f): /* convert top of stack long to float */ | |
1382 { | |
1383 jlong r = STACK_LONG(-1); | |
1384 MORE_STACK(-2); // Pop | |
1385 SET_STACK_FLOAT(VMlong2Float(r), 0); | |
1386 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1387 } | |
1388 | |
1389 CASE(_l2d): /* convert top of stack long to double */ | |
1390 { | |
1391 jlong r = STACK_LONG(-1); | |
1392 MORE_STACK(-2); // Pop | |
1393 SET_STACK_DOUBLE(VMlong2Double(r), 1); | |
1394 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1395 } | |
1396 | |
1397 CASE(_f2i): /* Convert top of stack float to int */ | |
1398 SET_STACK_INT(SharedRuntime::f2i(STACK_FLOAT(-1)), -1); | |
1399 UPDATE_PC_AND_CONTINUE(1); | |
1400 | |
1401 CASE(_f2l): /* convert top of stack float to long */ | |
1402 { | |
1403 jlong r = SharedRuntime::f2l(STACK_FLOAT(-1)); | |
1404 MORE_STACK(-1); // POP | |
1405 SET_STACK_LONG(r, 1); | |
1406 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1407 } | |
1408 | |
1409 CASE(_f2d): /* convert top of stack float to double */ | |
1410 { | |
1411 jfloat f; | |
1412 jdouble r; | |
1413 f = STACK_FLOAT(-1); | |
1414 r = (jdouble) f; | |
1415 MORE_STACK(-1); // POP | |
1416 SET_STACK_DOUBLE(r, 1); | |
1417 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1418 } | |
1419 | |
1420 CASE(_d2i): /* convert top of stack double to int */ | |
1421 { | |
1422 jint r1 = SharedRuntime::d2i(STACK_DOUBLE(-1)); | |
1423 MORE_STACK(-2); | |
1424 SET_STACK_INT(r1, 0); | |
1425 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1426 } | |
1427 | |
1428 CASE(_d2f): /* convert top of stack double to float */ | |
1429 { | |
1430 jfloat r1 = VMdouble2Float(STACK_DOUBLE(-1)); | |
1431 MORE_STACK(-2); | |
1432 SET_STACK_FLOAT(r1, 0); | |
1433 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1434 } | |
1435 | |
1436 CASE(_d2l): /* convert top of stack double to long */ | |
1437 { | |
1438 jlong r1 = SharedRuntime::d2l(STACK_DOUBLE(-1)); | |
1439 MORE_STACK(-2); | |
1440 SET_STACK_LONG(r1, 1); | |
1441 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1442 } | |
1443 | |
1444 CASE(_i2b): | |
1445 SET_STACK_INT(VMint2Byte(STACK_INT(-1)), -1); | |
1446 UPDATE_PC_AND_CONTINUE(1); | |
1447 | |
1448 CASE(_i2c): | |
1449 SET_STACK_INT(VMint2Char(STACK_INT(-1)), -1); | |
1450 UPDATE_PC_AND_CONTINUE(1); | |
1451 | |
1452 CASE(_i2s): | |
1453 SET_STACK_INT(VMint2Short(STACK_INT(-1)), -1); | |
1454 UPDATE_PC_AND_CONTINUE(1); | |
1455 | |
1456 /* comparison operators */ | |
1457 | |
1458 | |
1459 #define COMPARISON_OP(name, comparison) \ | |
1460 CASE(_if_icmp##name): { \ | |
1461 int skip = (STACK_INT(-2) comparison STACK_INT(-1)) \ | |
1462 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1463 address branch_pc = pc; \ | |
1464 UPDATE_PC_AND_TOS(skip, -2); \ | |
1465 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1466 CONTINUE; \ | |
1467 } \ | |
1468 CASE(_if##name): { \ | |
1469 int skip = (STACK_INT(-1) comparison 0) \ | |
1470 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1471 address branch_pc = pc; \ | |
1472 UPDATE_PC_AND_TOS(skip, -1); \ | |
1473 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1474 CONTINUE; \ | |
1475 } | |
1476 | |
1477 #define COMPARISON_OP2(name, comparison) \ | |
1478 COMPARISON_OP(name, comparison) \ | |
1479 CASE(_if_acmp##name): { \ | |
1480 int skip = (STACK_OBJECT(-2) comparison STACK_OBJECT(-1)) \ | |
1481 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1482 address branch_pc = pc; \ | |
1483 UPDATE_PC_AND_TOS(skip, -2); \ | |
1484 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1485 CONTINUE; \ | |
1486 } | |
1487 | |
1488 #define NULL_COMPARISON_NOT_OP(name) \ | |
1489 CASE(_if##name): { \ | |
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1490 int skip = (!(STACK_OBJECT(-1) == NULL)) \ |
0 | 1491 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
1492 address branch_pc = pc; \ | |
1493 UPDATE_PC_AND_TOS(skip, -1); \ | |
1494 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1495 CONTINUE; \ | |
1496 } | |
1497 | |
1498 #define NULL_COMPARISON_OP(name) \ | |
1499 CASE(_if##name): { \ | |
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1500 int skip = ((STACK_OBJECT(-1) == NULL)) \ |
0 | 1501 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
1502 address branch_pc = pc; \ | |
1503 UPDATE_PC_AND_TOS(skip, -1); \ | |
1504 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1505 CONTINUE; \ | |
1506 } | |
1507 COMPARISON_OP(lt, <); | |
1508 COMPARISON_OP(gt, >); | |
1509 COMPARISON_OP(le, <=); | |
1510 COMPARISON_OP(ge, >=); | |
1511 COMPARISON_OP2(eq, ==); /* include ref comparison */ | |
1512 COMPARISON_OP2(ne, !=); /* include ref comparison */ | |
1513 NULL_COMPARISON_OP(null); | |
1514 NULL_COMPARISON_NOT_OP(nonnull); | |
1515 | |
1516 /* Goto pc at specified offset in switch table. */ | |
1517 | |
1518 CASE(_tableswitch): { | |
1519 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
1520 int32_t key = STACK_INT(-1); | |
1521 int32_t low = Bytes::get_Java_u4((address)&lpc[1]); | |
1522 int32_t high = Bytes::get_Java_u4((address)&lpc[2]); | |
1523 int32_t skip; | |
1524 key -= low; | |
1525 skip = ((uint32_t) key > (uint32_t)(high - low)) | |
1526 ? Bytes::get_Java_u4((address)&lpc[0]) | |
1527 : Bytes::get_Java_u4((address)&lpc[key + 3]); | |
1528 // Does this really need a full backedge check (osr?) | |
1529 address branch_pc = pc; | |
1530 UPDATE_PC_AND_TOS(skip, -1); | |
1531 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
1532 CONTINUE; | |
1533 } | |
1534 | |
1535 /* Goto pc whose table entry matches specified key */ | |
1536 | |
1537 CASE(_lookupswitch): { | |
1538 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
1539 int32_t key = STACK_INT(-1); | |
1540 int32_t skip = Bytes::get_Java_u4((address) lpc); /* default amount */ | |
1541 int32_t npairs = Bytes::get_Java_u4((address) &lpc[1]); | |
1542 while (--npairs >= 0) { | |
1543 lpc += 2; | |
1544 if (key == (int32_t)Bytes::get_Java_u4((address)lpc)) { | |
1545 skip = Bytes::get_Java_u4((address)&lpc[1]); | |
1546 break; | |
1547 } | |
1548 } | |
1549 address branch_pc = pc; | |
1550 UPDATE_PC_AND_TOS(skip, -1); | |
1551 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
1552 CONTINUE; | |
1553 } | |
1554 | |
1555 CASE(_fcmpl): | |
1556 CASE(_fcmpg): | |
1557 { | |
1558 SET_STACK_INT(VMfloatCompare(STACK_FLOAT(-2), | |
1559 STACK_FLOAT(-1), | |
1560 (opcode == Bytecodes::_fcmpl ? -1 : 1)), | |
1561 -2); | |
1562 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1563 } | |
1564 | |
1565 CASE(_dcmpl): | |
1566 CASE(_dcmpg): | |
1567 { | |
1568 int r = VMdoubleCompare(STACK_DOUBLE(-3), | |
1569 STACK_DOUBLE(-1), | |
1570 (opcode == Bytecodes::_dcmpl ? -1 : 1)); | |
1571 MORE_STACK(-4); // Pop | |
1572 SET_STACK_INT(r, 0); | |
1573 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1574 } | |
1575 | |
1576 CASE(_lcmp): | |
1577 { | |
1578 int r = VMlongCompare(STACK_LONG(-3), STACK_LONG(-1)); | |
1579 MORE_STACK(-4); | |
1580 SET_STACK_INT(r, 0); | |
1581 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1582 } | |
1583 | |
1584 | |
1585 /* Return from a method */ | |
1586 | |
1587 CASE(_areturn): | |
1588 CASE(_ireturn): | |
1589 CASE(_freturn): | |
1590 { | |
1591 // Allow a safepoint before returning to frame manager. | |
1592 SAFEPOINT; | |
1593 | |
1594 goto handle_return; | |
1595 } | |
1596 | |
1597 CASE(_lreturn): | |
1598 CASE(_dreturn): | |
1599 { | |
1600 // Allow a safepoint before returning to frame manager. | |
1601 SAFEPOINT; | |
1602 goto handle_return; | |
1603 } | |
1604 | |
1605 CASE(_return_register_finalizer): { | |
1606 | |
1607 oop rcvr = LOCALS_OBJECT(0); | |
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1608 VERIFY_OOP(rcvr); |
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1609 if (rcvr->klass()->has_finalizer()) { |
0 | 1610 CALL_VM(InterpreterRuntime::register_finalizer(THREAD, rcvr), handle_exception); |
1611 } | |
1612 goto handle_return; | |
1613 } | |
1614 CASE(_return): { | |
1615 | |
1616 // Allow a safepoint before returning to frame manager. | |
1617 SAFEPOINT; | |
1618 goto handle_return; | |
1619 } | |
1620 | |
1621 /* Array access byte-codes */ | |
1622 | |
1623 /* Every array access byte-code starts out like this */ | |
1624 // arrayOopDesc* arrObj = (arrayOopDesc*)STACK_OBJECT(arrayOff); | |
1625 #define ARRAY_INTRO(arrayOff) \ | |
1626 arrayOop arrObj = (arrayOop)STACK_OBJECT(arrayOff); \ | |
1627 jint index = STACK_INT(arrayOff + 1); \ | |
1628 char message[jintAsStringSize]; \ | |
1629 CHECK_NULL(arrObj); \ | |
1630 if ((uint32_t)index >= (uint32_t)arrObj->length()) { \ | |
1631 sprintf(message, "%d", index); \ | |
1632 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), \ | |
1633 message); \ | |
1634 } | |
1635 | |
1636 /* 32-bit loads. These handle conversion from < 32-bit types */ | |
1637 #define ARRAY_LOADTO32(T, T2, format, stackRes, extra) \ | |
1638 { \ | |
1639 ARRAY_INTRO(-2); \ | |
1640 extra; \ | |
1641 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), \ | |
1642 -2); \ | |
1643 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1644 } | |
1645 | |
1646 /* 64-bit loads */ | |
1647 #define ARRAY_LOADTO64(T,T2, stackRes, extra) \ | |
1648 { \ | |
1649 ARRAY_INTRO(-2); \ | |
1650 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), -1); \ | |
1651 extra; \ | |
1652 UPDATE_PC_AND_CONTINUE(1); \ | |
1653 } | |
1654 | |
1655 CASE(_iaload): | |
1656 ARRAY_LOADTO32(T_INT, jint, "%d", STACK_INT, 0); | |
1657 CASE(_faload): | |
1658 ARRAY_LOADTO32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
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1659 CASE(_aaload): { |
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1660 ARRAY_INTRO(-2); |
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1661 SET_STACK_OBJECT(((objArrayOop) arrObj)->obj_at(index), -2); |
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1662 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); |
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1663 } |
0 | 1664 CASE(_baload): |
1665 ARRAY_LOADTO32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
1666 CASE(_caload): | |
1667 ARRAY_LOADTO32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
1668 CASE(_saload): | |
1669 ARRAY_LOADTO32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
1670 CASE(_laload): | |
1671 ARRAY_LOADTO64(T_LONG, jlong, STACK_LONG, 0); | |
1672 CASE(_daload): | |
1673 ARRAY_LOADTO64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
1674 | |
1675 /* 32-bit stores. These handle conversion to < 32-bit types */ | |
1676 #define ARRAY_STOREFROM32(T, T2, format, stackSrc, extra) \ | |
1677 { \ | |
1678 ARRAY_INTRO(-3); \ | |
1679 extra; \ | |
1680 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ | |
1681 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); \ | |
1682 } | |
1683 | |
1684 /* 64-bit stores */ | |
1685 #define ARRAY_STOREFROM64(T, T2, stackSrc, extra) \ | |
1686 { \ | |
1687 ARRAY_INTRO(-4); \ | |
1688 extra; \ | |
1689 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ | |
1690 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -4); \ | |
1691 } | |
1692 | |
1693 CASE(_iastore): | |
1694 ARRAY_STOREFROM32(T_INT, jint, "%d", STACK_INT, 0); | |
1695 CASE(_fastore): | |
1696 ARRAY_STOREFROM32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
1697 /* | |
1698 * This one looks different because of the assignability check | |
1699 */ | |
1700 CASE(_aastore): { | |
1701 oop rhsObject = STACK_OBJECT(-1); | |
1681
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1702 VERIFY_OOP(rhsObject); |
0 | 1703 ARRAY_INTRO( -3); |
1704 // arrObj, index are set | |
1705 if (rhsObject != NULL) { | |
1706 /* Check assignability of rhsObject into arrObj */ | |
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1707 Klass* rhsKlassOop = rhsObject->klass(); // EBX (subclass) |
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1708 Klass* elemKlassOop = ObjArrayKlass::cast(arrObj->klass())->element_klass(); // superklass EAX |
0 | 1709 // |
1710 // Check for compatibilty. This check must not GC!! | |
1711 // Seems way more expensive now that we must dispatch | |
1712 // | |
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1713 if (rhsKlassOop != elemKlassOop && !rhsKlassOop->is_subtype_of(elemKlassOop)) { // ebx->is... |
0 | 1714 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayStoreException(), ""); |
1715 } | |
1716 } | |
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1717 ((objArrayOopDesc *) arrObj)->obj_at_put(index, rhsObject); |
0 | 1718 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); |
1719 } | |
1720 CASE(_bastore): | |
1721 ARRAY_STOREFROM32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
1722 CASE(_castore): | |
1723 ARRAY_STOREFROM32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
1724 CASE(_sastore): | |
1725 ARRAY_STOREFROM32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
1726 CASE(_lastore): | |
1727 ARRAY_STOREFROM64(T_LONG, jlong, STACK_LONG, 0); | |
1728 CASE(_dastore): | |
1729 ARRAY_STOREFROM64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
1730 | |
1731 CASE(_arraylength): | |
1732 { | |
1733 arrayOop ary = (arrayOop) STACK_OBJECT(-1); | |
1734 CHECK_NULL(ary); | |
1735 SET_STACK_INT(ary->length(), -1); | |
1736 UPDATE_PC_AND_CONTINUE(1); | |
1737 } | |
1738 | |
1739 /* monitorenter and monitorexit for locking/unlocking an object */ | |
1740 | |
1741 CASE(_monitorenter): { | |
1742 oop lockee = STACK_OBJECT(-1); | |
1743 // derefing's lockee ought to provoke implicit null check | |
1744 CHECK_NULL(lockee); | |
1745 // find a free monitor or one already allocated for this object | |
1746 // if we find a matching object then we need a new monitor | |
1747 // since this is recursive enter | |
1748 BasicObjectLock* limit = istate->monitor_base(); | |
1749 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
1750 BasicObjectLock* entry = NULL; | |
1751 while (most_recent != limit ) { | |
1752 if (most_recent->obj() == NULL) entry = most_recent; | |
1753 else if (most_recent->obj() == lockee) break; | |
1754 most_recent++; | |
1755 } | |
1756 if (entry != NULL) { | |
1757 entry->set_obj(lockee); | |
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1758 int success = false; |
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1759 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place; |
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1760 |
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1761 markOop mark = lockee->mark(); |
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1762 intptr_t hash = (intptr_t) markOopDesc::no_hash; |
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1763 // implies UseBiasedLocking |
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1764 if (mark->has_bias_pattern()) { |
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1765 uintptr_t thread_ident; |
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1766 uintptr_t anticipated_bias_locking_value; |
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1767 thread_ident = (uintptr_t)istate->thread(); |
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1768 anticipated_bias_locking_value = |
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1769 (((uintptr_t)lockee->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) & |
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1770 ~((uintptr_t) markOopDesc::age_mask_in_place); |
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1771 |
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1772 if (anticipated_bias_locking_value == 0) { |
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1773 // already biased towards this thread, nothing to do |
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1774 if (PrintBiasedLockingStatistics) { |
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1775 (* BiasedLocking::biased_lock_entry_count_addr())++; |
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1776 } |
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1777 success = true; |
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1778 } |
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1779 else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) { |
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1780 // try revoke bias |
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1781 markOop header = lockee->klass()->prototype_header(); |
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1782 if (hash != markOopDesc::no_hash) { |
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1783 header = header->copy_set_hash(hash); |
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1784 } |
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1785 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), mark) == mark) { |
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1786 if (PrintBiasedLockingStatistics) |
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1787 (*BiasedLocking::revoked_lock_entry_count_addr())++; |
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1788 } |
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1789 } |
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1790 else if ((anticipated_bias_locking_value & epoch_mask_in_place) !=0) { |
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1791 // try rebias |
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1792 markOop new_header = (markOop) ( (intptr_t) lockee->klass()->prototype_header() | thread_ident); |
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1793 if (hash != markOopDesc::no_hash) { |
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1794 new_header = new_header->copy_set_hash(hash); |
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1795 } |
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1796 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), mark) == mark) { |
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1797 if (PrintBiasedLockingStatistics) |
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1798 (* BiasedLocking::rebiased_lock_entry_count_addr())++; |
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1799 } |
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1800 else { |
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1801 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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1802 } |
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1803 success = true; |
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1804 } |
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1805 else { |
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1806 // try to bias towards thread in case object is anonymously biased |
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1807 markOop header = (markOop) ((uintptr_t) mark & ((uintptr_t)markOopDesc::biased_lock_mask_in_place | |
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1808 (uintptr_t)markOopDesc::age_mask_in_place | |
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1809 epoch_mask_in_place)); |
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1810 if (hash != markOopDesc::no_hash) { |
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1811 header = header->copy_set_hash(hash); |
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1812 } |
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1813 markOop new_header = (markOop) ((uintptr_t) header | thread_ident); |
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1814 // debugging hint |
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1815 DEBUG_ONLY(entry->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);) |
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1816 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), header) == header) { |
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1817 if (PrintBiasedLockingStatistics) |
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1818 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++; |
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1819 } |
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1820 else { |
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1821 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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1822 } |
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1823 success = true; |
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1824 } |
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1825 } |
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1826 |
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1827 // traditional lightweight locking |
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1828 if (!success) { |
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1829 markOop displaced = lockee->mark()->set_unlocked(); |
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1830 entry->lock()->set_displaced_header(displaced); |
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1831 bool call_vm = UseHeavyMonitors; |
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1832 if (call_vm || Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { |
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1833 // Is it simple recursive case? |
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1834 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { |
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1835 entry->lock()->set_displaced_header(NULL); |
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1836 } else { |
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1837 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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1838 } |
0 | 1839 } |
1840 } | |
1841 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1842 } else { | |
1843 istate->set_msg(more_monitors); | |
1844 UPDATE_PC_AND_RETURN(0); // Re-execute | |
1845 } | |
1846 } | |
1847 | |
1848 CASE(_monitorexit): { | |
1849 oop lockee = STACK_OBJECT(-1); | |
1850 CHECK_NULL(lockee); | |
1851 // derefing's lockee ought to provoke implicit null check | |
1852 // find our monitor slot | |
1853 BasicObjectLock* limit = istate->monitor_base(); | |
1854 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
1855 while (most_recent != limit ) { | |
1856 if ((most_recent)->obj() == lockee) { | |
1857 BasicLock* lock = most_recent->lock(); | |
1858 markOop header = lock->displaced_header(); | |
1859 most_recent->set_obj(NULL); | |
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1860 if (!lockee->mark()->has_bias_pattern()) { |
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1861 bool call_vm = UseHeavyMonitors; |
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1862 // If it isn't recursive we either must swap old header or call the runtime |
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1863 if (header != NULL || call_vm) { |
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1864 if (call_vm || Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { |
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1865 // restore object for the slow case |
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1866 most_recent->set_obj(lockee); |
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1867 CALL_VM(InterpreterRuntime::monitorexit(THREAD, most_recent), handle_exception); |
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1868 } |
0 | 1869 } |
1870 } | |
1871 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1872 } | |
1873 most_recent++; | |
1874 } | |
1875 // Need to throw illegal monitor state exception | |
1876 CALL_VM(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD), handle_exception); | |
2480 | 1877 ShouldNotReachHere(); |
0 | 1878 } |
1879 | |
1880 /* All of the non-quick opcodes. */ | |
1881 | |
1882 /* -Set clobbersCpIndex true if the quickened opcode clobbers the | |
1883 * constant pool index in the instruction. | |
1884 */ | |
1885 CASE(_getfield): | |
1886 CASE(_getstatic): | |
1887 { | |
1888 u2 index; | |
1889 ConstantPoolCacheEntry* cache; | |
1890 index = Bytes::get_native_u2(pc+1); | |
1891 | |
1892 // QQQ Need to make this as inlined as possible. Probably need to | |
1893 // split all the bytecode cases out so c++ compiler has a chance | |
1894 // for constant prop to fold everything possible away. | |
1895 | |
1896 cache = cp->entry_at(index); | |
1897 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
1898 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
1899 handle_exception); | |
1900 cache = cp->entry_at(index); | |
1901 } | |
1902 | |
1903 #ifdef VM_JVMTI | |
1904 if (_jvmti_interp_events) { | |
1905 int *count_addr; | |
1906 oop obj; | |
1907 // Check to see if a field modification watch has been set | |
1908 // before we take the time to call into the VM. | |
1909 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
1910 if ( *count_addr > 0 ) { | |
1911 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
1912 obj = (oop)NULL; | |
1913 } else { | |
1914 obj = (oop) STACK_OBJECT(-1); | |
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1915 VERIFY_OOP(obj); |
0 | 1916 } |
1917 CALL_VM(InterpreterRuntime::post_field_access(THREAD, | |
1918 obj, | |
1919 cache), | |
1920 handle_exception); | |
1921 } | |
1922 } | |
1923 #endif /* VM_JVMTI */ | |
1924 | |
1925 oop obj; | |
1926 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
6926 | 1927 Klass* k = cache->f1_as_klass(); |
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1928 obj = k->java_mirror(); |
0 | 1929 MORE_STACK(1); // Assume single slot push |
1930 } else { | |
1931 obj = (oop) STACK_OBJECT(-1); | |
1932 CHECK_NULL(obj); | |
1933 } | |
1934 | |
1935 // | |
1936 // Now store the result on the stack | |
1937 // | |
1938 TosState tos_type = cache->flag_state(); | |
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1939 int field_offset = cache->f2_as_index(); |
0 | 1940 if (cache->is_volatile()) { |
1941 if (tos_type == atos) { | |
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1942 VERIFY_OOP(obj->obj_field_acquire(field_offset)); |
0 | 1943 SET_STACK_OBJECT(obj->obj_field_acquire(field_offset), -1); |
1944 } else if (tos_type == itos) { | |
1945 SET_STACK_INT(obj->int_field_acquire(field_offset), -1); | |
1946 } else if (tos_type == ltos) { | |
1947 SET_STACK_LONG(obj->long_field_acquire(field_offset), 0); | |
1948 MORE_STACK(1); | |
1949 } else if (tos_type == btos) { | |
1950 SET_STACK_INT(obj->byte_field_acquire(field_offset), -1); | |
1951 } else if (tos_type == ctos) { | |
1952 SET_STACK_INT(obj->char_field_acquire(field_offset), -1); | |
1953 } else if (tos_type == stos) { | |
1954 SET_STACK_INT(obj->short_field_acquire(field_offset), -1); | |
1955 } else if (tos_type == ftos) { | |
1956 SET_STACK_FLOAT(obj->float_field_acquire(field_offset), -1); | |
1957 } else { | |
1958 SET_STACK_DOUBLE(obj->double_field_acquire(field_offset), 0); | |
1959 MORE_STACK(1); | |
1960 } | |
1961 } else { | |
1962 if (tos_type == atos) { | |
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1963 VERIFY_OOP(obj->obj_field(field_offset)); |
0 | 1964 SET_STACK_OBJECT(obj->obj_field(field_offset), -1); |
1965 } else if (tos_type == itos) { | |
1966 SET_STACK_INT(obj->int_field(field_offset), -1); | |
1967 } else if (tos_type == ltos) { | |
1968 SET_STACK_LONG(obj->long_field(field_offset), 0); | |
1969 MORE_STACK(1); | |
1970 } else if (tos_type == btos) { | |
1971 SET_STACK_INT(obj->byte_field(field_offset), -1); | |
1972 } else if (tos_type == ctos) { | |
1973 SET_STACK_INT(obj->char_field(field_offset), -1); | |
1974 } else if (tos_type == stos) { | |
1975 SET_STACK_INT(obj->short_field(field_offset), -1); | |
1976 } else if (tos_type == ftos) { | |
1977 SET_STACK_FLOAT(obj->float_field(field_offset), -1); | |
1978 } else { | |
1979 SET_STACK_DOUBLE(obj->double_field(field_offset), 0); | |
1980 MORE_STACK(1); | |
1981 } | |
1982 } | |
1983 | |
1984 UPDATE_PC_AND_CONTINUE(3); | |
1985 } | |
1986 | |
1987 CASE(_putfield): | |
1988 CASE(_putstatic): | |
1989 { | |
1990 u2 index = Bytes::get_native_u2(pc+1); | |
1991 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
1992 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
1993 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
1994 handle_exception); | |
1995 cache = cp->entry_at(index); | |
1996 } | |
1997 | |
1998 #ifdef VM_JVMTI | |
1999 if (_jvmti_interp_events) { | |
2000 int *count_addr; | |
2001 oop obj; | |
2002 // Check to see if a field modification watch has been set | |
2003 // before we take the time to call into the VM. | |
2004 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
2005 if ( *count_addr > 0 ) { | |
2006 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
2007 obj = (oop)NULL; | |
2008 } | |
2009 else { | |
2010 if (cache->is_long() || cache->is_double()) { | |
2011 obj = (oop) STACK_OBJECT(-3); | |
2012 } else { | |
2013 obj = (oop) STACK_OBJECT(-2); | |
2014 } | |
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2015 VERIFY_OOP(obj); |
0 | 2016 } |
2017 | |
2018 CALL_VM(InterpreterRuntime::post_field_modification(THREAD, | |
2019 obj, | |
2020 cache, | |
2021 (jvalue *)STACK_SLOT(-1)), | |
2022 handle_exception); | |
2023 } | |
2024 } | |
2025 #endif /* VM_JVMTI */ | |
2026 | |
2027 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2028 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2029 | |
2030 oop obj; | |
2031 int count; | |
2032 TosState tos_type = cache->flag_state(); | |
2033 | |
2034 count = -1; | |
2035 if (tos_type == ltos || tos_type == dtos) { | |
2036 --count; | |
2037 } | |
2038 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
6926 | 2039 Klass* k = cache->f1_as_klass(); |
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2040 obj = k->java_mirror(); |
0 | 2041 } else { |
2042 --count; | |
2043 obj = (oop) STACK_OBJECT(count); | |
2044 CHECK_NULL(obj); | |
2045 } | |
2046 | |
2047 // | |
2048 // Now store the result | |
2049 // | |
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2050 int field_offset = cache->f2_as_index(); |
0 | 2051 if (cache->is_volatile()) { |
2052 if (tos_type == itos) { | |
2053 obj->release_int_field_put(field_offset, STACK_INT(-1)); | |
2054 } else if (tos_type == atos) { | |
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2055 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 2056 obj->release_obj_field_put(field_offset, STACK_OBJECT(-1)); |
2057 } else if (tos_type == btos) { | |
2058 obj->release_byte_field_put(field_offset, STACK_INT(-1)); | |
2059 } else if (tos_type == ltos) { | |
2060 obj->release_long_field_put(field_offset, STACK_LONG(-1)); | |
2061 } else if (tos_type == ctos) { | |
2062 obj->release_char_field_put(field_offset, STACK_INT(-1)); | |
2063 } else if (tos_type == stos) { | |
2064 obj->release_short_field_put(field_offset, STACK_INT(-1)); | |
2065 } else if (tos_type == ftos) { | |
2066 obj->release_float_field_put(field_offset, STACK_FLOAT(-1)); | |
2067 } else { | |
2068 obj->release_double_field_put(field_offset, STACK_DOUBLE(-1)); | |
2069 } | |
2070 OrderAccess::storeload(); | |
2071 } else { | |
2072 if (tos_type == itos) { | |
2073 obj->int_field_put(field_offset, STACK_INT(-1)); | |
2074 } else if (tos_type == atos) { | |
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2075 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 2076 obj->obj_field_put(field_offset, STACK_OBJECT(-1)); |
2077 } else if (tos_type == btos) { | |
2078 obj->byte_field_put(field_offset, STACK_INT(-1)); | |
2079 } else if (tos_type == ltos) { | |
2080 obj->long_field_put(field_offset, STACK_LONG(-1)); | |
2081 } else if (tos_type == ctos) { | |
2082 obj->char_field_put(field_offset, STACK_INT(-1)); | |
2083 } else if (tos_type == stos) { | |
2084 obj->short_field_put(field_offset, STACK_INT(-1)); | |
2085 } else if (tos_type == ftos) { | |
2086 obj->float_field_put(field_offset, STACK_FLOAT(-1)); | |
2087 } else { | |
2088 obj->double_field_put(field_offset, STACK_DOUBLE(-1)); | |
2089 } | |
2090 } | |
2091 | |
2092 UPDATE_PC_AND_TOS_AND_CONTINUE(3, count); | |
2093 } | |
2094 | |
2095 CASE(_new): { | |
2096 u2 index = Bytes::get_Java_u2(pc+1); | |
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2097 ConstantPool* constants = istate->method()->constants(); |
0 | 2098 if (!constants->tag_at(index).is_unresolved_klass()) { |
2099 // Make sure klass is initialized and doesn't have a finalizer | |
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2100 Klass* entry = constants->slot_at(index).get_klass(); |
0 | 2101 assert(entry->is_klass(), "Should be resolved klass"); |
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2102 Klass* k_entry = (Klass*) entry; |
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2103 assert(k_entry->oop_is_instance(), "Should be InstanceKlass"); |
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2104 InstanceKlass* ik = (InstanceKlass*) k_entry; |
0 | 2105 if ( ik->is_initialized() && ik->can_be_fastpath_allocated() ) { |
2106 size_t obj_size = ik->size_helper(); | |
2107 oop result = NULL; | |
2108 // If the TLAB isn't pre-zeroed then we'll have to do it | |
2109 bool need_zero = !ZeroTLAB; | |
2110 if (UseTLAB) { | |
2111 result = (oop) THREAD->tlab().allocate(obj_size); | |
2112 } | |
2113 if (result == NULL) { | |
2114 need_zero = true; | |
2115 // Try allocate in shared eden | |
2116 retry: | |
2117 HeapWord* compare_to = *Universe::heap()->top_addr(); | |
2118 HeapWord* new_top = compare_to + obj_size; | |
2119 if (new_top <= *Universe::heap()->end_addr()) { | |
2120 if (Atomic::cmpxchg_ptr(new_top, Universe::heap()->top_addr(), compare_to) != compare_to) { | |
2121 goto retry; | |
2122 } | |
2123 result = (oop) compare_to; | |
2124 } | |
2125 } | |
2126 if (result != NULL) { | |
2127 // Initialize object (if nonzero size and need) and then the header | |
2128 if (need_zero ) { | |
2129 HeapWord* to_zero = (HeapWord*) result + sizeof(oopDesc) / oopSize; | |
2130 obj_size -= sizeof(oopDesc) / oopSize; | |
2131 if (obj_size > 0 ) { | |
2132 memset(to_zero, 0, obj_size * HeapWordSize); | |
2133 } | |
2134 } | |
2135 if (UseBiasedLocking) { | |
2136 result->set_mark(ik->prototype_header()); | |
2137 } else { | |
2138 result->set_mark(markOopDesc::prototype()); | |
2139 } | |
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2140 result->set_klass_gap(0); |
0 | 2141 result->set_klass(k_entry); |
2142 SET_STACK_OBJECT(result, 0); | |
2143 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
2144 } | |
2145 } | |
2146 } | |
2147 // Slow case allocation | |
2148 CALL_VM(InterpreterRuntime::_new(THREAD, METHOD->constants(), index), | |
2149 handle_exception); | |
2150 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
2151 THREAD->set_vm_result(NULL); | |
2152 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
2153 } | |
2154 CASE(_anewarray): { | |
2155 u2 index = Bytes::get_Java_u2(pc+1); | |
2156 jint size = STACK_INT(-1); | |
2157 CALL_VM(InterpreterRuntime::anewarray(THREAD, METHOD->constants(), index, size), | |
2158 handle_exception); | |
2159 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
2160 THREAD->set_vm_result(NULL); | |
2161 UPDATE_PC_AND_CONTINUE(3); | |
2162 } | |
2163 CASE(_multianewarray): { | |
2164 jint dims = *(pc+3); | |
2165 jint size = STACK_INT(-1); | |
2166 // stack grows down, dimensions are up! | |
2167 jint *dimarray = | |
1509 | 2168 (jint*)&topOfStack[dims * Interpreter::stackElementWords+ |
2169 Interpreter::stackElementWords-1]; | |
0 | 2170 //adjust pointer to start of stack element |
2171 CALL_VM(InterpreterRuntime::multianewarray(THREAD, dimarray), | |
2172 handle_exception); | |
2173 SET_STACK_OBJECT(THREAD->vm_result(), -dims); | |
2174 THREAD->set_vm_result(NULL); | |
2175 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -(dims-1)); | |
2176 } | |
2177 CASE(_checkcast): | |
2178 if (STACK_OBJECT(-1) != NULL) { | |
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2179 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 2180 u2 index = Bytes::get_Java_u2(pc+1); |
2181 if (ProfileInterpreter) { | |
2182 // needs Profile_checkcast QQQ | |
2183 ShouldNotReachHere(); | |
2184 } | |
2185 // Constant pool may have actual klass or unresolved klass. If it is | |
2186 // unresolved we must resolve it | |
2187 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
2188 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
2189 } | |
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2190 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass(); |
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2191 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); //ebx |
0 | 2192 // |
2193 // Check for compatibilty. This check must not GC!! | |
2194 // Seems way more expensive now that we must dispatch | |
2195 // | |
2196 if (objKlassOop != klassOf && | |
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2197 !objKlassOop->is_subtype_of(klassOf)) { |
0 | 2198 ResourceMark rm(THREAD); |
6983 | 2199 const char* objName = objKlassOop->external_name(); |
2200 const char* klassName = klassOf->external_name(); | |
0 | 2201 char* message = SharedRuntime::generate_class_cast_message( |
2202 objName, klassName); | |
2203 VM_JAVA_ERROR(vmSymbols::java_lang_ClassCastException(), message); | |
2204 } | |
2205 } else { | |
2206 if (UncommonNullCast) { | |
2207 // istate->method()->set_null_cast_seen(); | |
2208 // [RGV] Not sure what to do here! | |
2209 | |
2210 } | |
2211 } | |
2212 UPDATE_PC_AND_CONTINUE(3); | |
2213 | |
2214 CASE(_instanceof): | |
2215 if (STACK_OBJECT(-1) == NULL) { | |
2216 SET_STACK_INT(0, -1); | |
2217 } else { | |
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2218 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 2219 u2 index = Bytes::get_Java_u2(pc+1); |
2220 // Constant pool may have actual klass or unresolved klass. If it is | |
2221 // unresolved we must resolve it | |
2222 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
2223 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
2224 } | |
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2225 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass(); |
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2226 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); |
0 | 2227 // |
2228 // Check for compatibilty. This check must not GC!! | |
2229 // Seems way more expensive now that we must dispatch | |
2230 // | |
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2231 if ( objKlassOop == klassOf || objKlassOop->is_subtype_of(klassOf)) { |
0 | 2232 SET_STACK_INT(1, -1); |
2233 } else { | |
2234 SET_STACK_INT(0, -1); | |
2235 } | |
2236 } | |
2237 UPDATE_PC_AND_CONTINUE(3); | |
2238 | |
2239 CASE(_ldc_w): | |
2240 CASE(_ldc): | |
2241 { | |
2242 u2 index; | |
2243 bool wide = false; | |
2244 int incr = 2; // frequent case | |
2245 if (opcode == Bytecodes::_ldc) { | |
2246 index = pc[1]; | |
2247 } else { | |
2248 index = Bytes::get_Java_u2(pc+1); | |
2249 incr = 3; | |
2250 wide = true; | |
2251 } | |
2252 | |
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2253 ConstantPool* constants = METHOD->constants(); |
0 | 2254 switch (constants->tag_at(index).value()) { |
2255 case JVM_CONSTANT_Integer: | |
2256 SET_STACK_INT(constants->int_at(index), 0); | |
2257 break; | |
2258 | |
2259 case JVM_CONSTANT_Float: | |
2260 SET_STACK_FLOAT(constants->float_at(index), 0); | |
2261 break; | |
2262 | |
2263 case JVM_CONSTANT_String: | |
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2264 { |
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2265 oop result = constants->resolved_references()->obj_at(index); |
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2266 if (result == NULL) { |
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2267 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception); |
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2268 SET_STACK_OBJECT(THREAD->vm_result(), 0); |
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2269 THREAD->set_vm_result(NULL); |
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2270 } else { |
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2271 VERIFY_OOP(result); |
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2272 SET_STACK_OBJECT(result, 0); |
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2273 } |
0 | 2274 break; |
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2275 } |
0 | 2276 |
2277 case JVM_CONSTANT_Class: | |
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2278 VERIFY_OOP(constants->resolved_klass_at(index)->java_mirror()); |
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2279 SET_STACK_OBJECT(constants->resolved_klass_at(index)->java_mirror(), 0); |
0 | 2280 break; |
2281 | |
2282 case JVM_CONSTANT_UnresolvedClass: | |
2283 case JVM_CONSTANT_UnresolvedClassInError: | |
2284 CALL_VM(InterpreterRuntime::ldc(THREAD, wide), handle_exception); | |
2285 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
2286 THREAD->set_vm_result(NULL); | |
2287 break; | |
2288 | |
2289 default: ShouldNotReachHere(); | |
2290 } | |
2291 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); | |
2292 } | |
2293 | |
2294 CASE(_ldc2_w): | |
2295 { | |
2296 u2 index = Bytes::get_Java_u2(pc+1); | |
2297 | |
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2298 ConstantPool* constants = METHOD->constants(); |
0 | 2299 switch (constants->tag_at(index).value()) { |
2300 | |
2301 case JVM_CONSTANT_Long: | |
2302 SET_STACK_LONG(constants->long_at(index), 1); | |
2303 break; | |
2304 | |
2305 case JVM_CONSTANT_Double: | |
2306 SET_STACK_DOUBLE(constants->double_at(index), 1); | |
2307 break; | |
2308 default: ShouldNotReachHere(); | |
2309 } | |
2310 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 2); | |
2311 } | |
2312 | |
2480 | 2313 CASE(_fast_aldc_w): |
2314 CASE(_fast_aldc): { | |
2315 u2 index; | |
2316 int incr; | |
2317 if (opcode == Bytecodes::_fast_aldc) { | |
2318 index = pc[1]; | |
2319 incr = 2; | |
2320 } else { | |
2321 index = Bytes::get_native_u2(pc+1); | |
2322 incr = 3; | |
2323 } | |
2324 | |
2325 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2326 // This kind of CP cache entry does not need to match the flags byte, because | |
2327 // there is a 1-1 relation between bytecode type and CP entry type. | |
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2328 ConstantPool* constants = METHOD->constants(); |
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2329 oop result = constants->resolved_references()->obj_at(index); |
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2330 if (result == NULL) { |
2480 | 2331 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), |
2332 handle_exception); | |
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2333 result = THREAD->vm_result(); |
2480 | 2334 } |
2335 | |
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2336 VERIFY_OOP(result); |
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2337 SET_STACK_OBJECT(result, 0); |
2480 | 2338 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); |
2339 } | |
2340 | |
2341 CASE(_invokedynamic): { | |
6926 | 2342 |
2480 | 2343 if (!EnableInvokeDynamic) { |
2344 // We should not encounter this bytecode if !EnableInvokeDynamic. | |
2345 // The verifier will stop it. However, if we get past the verifier, | |
2346 // this will stop the thread in a reasonable way, without crashing the JVM. | |
2347 CALL_VM(InterpreterRuntime::throw_IncompatibleClassChangeError(THREAD), | |
2348 handle_exception); | |
2349 ShouldNotReachHere(); | |
2350 } | |
2351 | |
6926 | 2352 u4 index = Bytes::get_native_u4(pc+1); |
2353 ConstantPoolCacheEntry* cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index); | |
2480 | 2354 |
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2355 // We are resolved if the resolved_references field contains a non-null object (CallSite, etc.) |
2480 | 2356 // This kind of CP cache entry does not need to match the flags byte, because |
2357 // there is a 1-1 relation between bytecode type and CP entry type. | |
6926 | 2358 if (! cache->is_resolved((Bytecodes::Code) opcode)) { |
2480 | 2359 CALL_VM(InterpreterRuntime::resolve_invokedynamic(THREAD), |
2360 handle_exception); | |
6926 | 2361 cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index); |
2362 } | |
2363 | |
2364 Method* method = cache->f1_as_method(); | |
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2365 if (VerifyOops) method->verify(); |
6926 | 2366 |
2367 if (cache->has_appendix()) { | |
2368 ConstantPool* constants = METHOD->constants(); | |
2369 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0); | |
2370 MORE_STACK(1); | |
2371 } | |
2372 | |
2373 istate->set_msg(call_method); | |
2374 istate->set_callee(method); | |
2375 istate->set_callee_entry_point(method->from_interpreted_entry()); | |
2376 istate->set_bcp_advance(5); | |
2377 | |
2378 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2379 } | |
2380 | |
2381 CASE(_invokehandle): { | |
2382 | |
2383 if (!EnableInvokeDynamic) { | |
2384 ShouldNotReachHere(); | |
2480 | 2385 } |
2386 | |
6926 | 2387 u2 index = Bytes::get_native_u2(pc+1); |
2388 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2389 | |
2390 if (! cache->is_resolved((Bytecodes::Code) opcode)) { | |
2391 CALL_VM(InterpreterRuntime::resolve_invokehandle(THREAD), | |
2392 handle_exception); | |
2393 cache = cp->entry_at(index); | |
2394 } | |
2395 | |
2396 Method* method = cache->f1_as_method(); | |
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2397 if (VerifyOops) method->verify(); |
6926 | 2398 |
2399 if (cache->has_appendix()) { | |
2400 ConstantPool* constants = METHOD->constants(); | |
2401 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0); | |
2402 MORE_STACK(1); | |
2403 } | |
2404 | |
2405 istate->set_msg(call_method); | |
2406 istate->set_callee(method); | |
2407 istate->set_callee_entry_point(method->from_interpreted_entry()); | |
2408 istate->set_bcp_advance(3); | |
2480 | 2409 |
2410 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2411 } | |
2412 | |
0 | 2413 CASE(_invokeinterface): { |
2414 u2 index = Bytes::get_native_u2(pc+1); | |
2415 | |
2416 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2417 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2418 | |
2419 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2420 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
2421 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
2422 handle_exception); | |
2423 cache = cp->entry_at(index); | |
2424 } | |
2425 | |
2426 istate->set_msg(call_method); | |
2427 | |
2428 // Special case of invokeinterface called for virtual method of | |
2429 // java.lang.Object. See cpCacheOop.cpp for details. | |
2430 // This code isn't produced by javac, but could be produced by | |
2431 // another compliant java compiler. | |
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2432 if (cache->is_forced_virtual()) { |
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2433 Method* callee; |
0 | 2434 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); |
2435 if (cache->is_vfinal()) { | |
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2436 callee = cache->f2_as_vfinal_method(); |
0 | 2437 } else { |
2438 // get receiver | |
2439 int parms = cache->parameter_size(); | |
2440 // Same comments as invokevirtual apply here | |
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2441 VERIFY_OOP(STACK_OBJECT(-parms)); |
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2442 InstanceKlass* rcvrKlass = (InstanceKlass*) |
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2443 STACK_OBJECT(-parms)->klass(); |
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2444 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()]; |
0 | 2445 } |
2446 istate->set_callee(callee); | |
2447 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2448 #ifdef VM_JVMTI | |
2449 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2450 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2451 } | |
2452 #endif /* VM_JVMTI */ | |
2453 istate->set_bcp_advance(5); | |
2454 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2455 } | |
2456 | |
2457 // this could definitely be cleaned up QQQ | |
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2458 Method* callee; |
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2459 Klass* iclass = cache->f1_as_klass(); |
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2460 // InstanceKlass* interface = (InstanceKlass*) iclass; |
0 | 2461 // get receiver |
2462 int parms = cache->parameter_size(); | |
2463 oop rcvr = STACK_OBJECT(-parms); | |
2464 CHECK_NULL(rcvr); | |
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2465 InstanceKlass* int2 = (InstanceKlass*) rcvr->klass(); |
0 | 2466 itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable(); |
2467 int i; | |
2468 for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) { | |
2469 if (ki->interface_klass() == iclass) break; | |
2470 } | |
2471 // If the interface isn't found, this class doesn't implement this | |
2472 // interface. The link resolver checks this but only for the first | |
2473 // time this interface is called. | |
2474 if (i == int2->itable_length()) { | |
2475 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), ""); | |
2476 } | |
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2477 int mindex = cache->f2_as_index(); |
0 | 2478 itableMethodEntry* im = ki->first_method_entry(rcvr->klass()); |
2479 callee = im[mindex].method(); | |
2480 if (callee == NULL) { | |
2481 VM_JAVA_ERROR(vmSymbols::java_lang_AbstractMethodError(), ""); | |
2482 } | |
2483 | |
2484 istate->set_callee(callee); | |
2485 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2486 #ifdef VM_JVMTI | |
2487 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2488 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2489 } | |
2490 #endif /* VM_JVMTI */ | |
2491 istate->set_bcp_advance(5); | |
2492 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2493 } | |
2494 | |
2495 CASE(_invokevirtual): | |
2496 CASE(_invokespecial): | |
2497 CASE(_invokestatic): { | |
2498 u2 index = Bytes::get_native_u2(pc+1); | |
2499 | |
2500 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2501 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2502 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2503 | |
2504 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
2505 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
2506 handle_exception); | |
2507 cache = cp->entry_at(index); | |
2508 } | |
2509 | |
2510 istate->set_msg(call_method); | |
2511 { | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2512 Method* callee; |
0 | 2513 if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) { |
2514 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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3960
diff
changeset
|
2515 if (cache->is_vfinal()) callee = cache->f2_as_vfinal_method(); |
0 | 2516 else { |
2517 // get receiver | |
2518 int parms = cache->parameter_size(); | |
2519 // this works but needs a resourcemark and seems to create a vtable on every call: | |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2520 // Method* callee = rcvr->klass()->vtable()->method_at(cache->f2_as_index()); |
0 | 2521 // |
2522 // this fails with an assert | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2523 // InstanceKlass* rcvrKlass = InstanceKlass::cast(STACK_OBJECT(-parms)->klass()); |
0 | 2524 // but this works |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1552
diff
changeset
|
2525 VERIFY_OOP(STACK_OBJECT(-parms)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2526 InstanceKlass* rcvrKlass = (InstanceKlass*) STACK_OBJECT(-parms)->klass(); |
0 | 2527 /* |
2528 Executing this code in java.lang.String: | |
2529 public String(char value[]) { | |
2530 this.count = value.length; | |
2531 this.value = (char[])value.clone(); | |
2532 } | |
2533 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2534 a find on rcvr->klass() reports: |
0 | 2535 {type array char}{type array class} |
2536 - klass: {other class} | |
2537 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2538 but using InstanceKlass::cast(STACK_OBJECT(-parms)->klass()) causes in assertion failure |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2539 because rcvr->klass()->oop_is_instance() == 0 |
0 | 2540 However it seems to have a vtable in the right location. Huh? |
2541 | |
2542 */ | |
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diff
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|
2543 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()]; |
0 | 2544 } |
2545 } else { | |
2546 if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) { | |
2547 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
2548 } | |
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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3960
diff
changeset
|
2549 callee = cache->f1_as_method(); |
0 | 2550 } |
2551 | |
2552 istate->set_callee(callee); | |
2553 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2554 #ifdef VM_JVMTI | |
2555 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2556 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2557 } | |
2558 #endif /* VM_JVMTI */ | |
2559 istate->set_bcp_advance(3); | |
2560 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2561 } | |
2562 } | |
2563 | |
2564 /* Allocate memory for a new java object. */ | |
2565 | |
2566 CASE(_newarray): { | |
2567 BasicType atype = (BasicType) *(pc+1); | |
2568 jint size = STACK_INT(-1); | |
2569 CALL_VM(InterpreterRuntime::newarray(THREAD, atype, size), | |
2570 handle_exception); | |
2571 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
2572 THREAD->set_vm_result(NULL); | |
2573 | |
2574 UPDATE_PC_AND_CONTINUE(2); | |
2575 } | |
2576 | |
2577 /* Throw an exception. */ | |
2578 | |
2579 CASE(_athrow): { | |
2580 oop except_oop = STACK_OBJECT(-1); | |
2581 CHECK_NULL(except_oop); | |
2582 // set pending_exception so we use common code | |
2583 THREAD->set_pending_exception(except_oop, NULL, 0); | |
2584 goto handle_exception; | |
2585 } | |
2586 | |
2587 /* goto and jsr. They are exactly the same except jsr pushes | |
2588 * the address of the next instruction first. | |
2589 */ | |
2590 | |
2591 CASE(_jsr): { | |
2592 /* push bytecode index on stack */ | |
2593 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 3), 0); | |
2594 MORE_STACK(1); | |
2595 /* FALL THROUGH */ | |
2596 } | |
2597 | |
2598 CASE(_goto): | |
2599 { | |
2600 int16_t offset = (int16_t)Bytes::get_Java_u2(pc + 1); | |
2601 address branch_pc = pc; | |
2602 UPDATE_PC(offset); | |
2603 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
2604 CONTINUE; | |
2605 } | |
2606 | |
2607 CASE(_jsr_w): { | |
2608 /* push return address on the stack */ | |
2609 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 5), 0); | |
2610 MORE_STACK(1); | |
2611 /* FALL THROUGH */ | |
2612 } | |
2613 | |
2614 CASE(_goto_w): | |
2615 { | |
2616 int32_t offset = Bytes::get_Java_u4(pc + 1); | |
2617 address branch_pc = pc; | |
2618 UPDATE_PC(offset); | |
2619 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
2620 CONTINUE; | |
2621 } | |
2622 | |
2623 /* return from a jsr or jsr_w */ | |
2624 | |
2625 CASE(_ret): { | |
2626 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(pc[1])); | |
2627 UPDATE_PC_AND_CONTINUE(0); | |
2628 } | |
2629 | |
2630 /* debugger breakpoint */ | |
2631 | |
2632 CASE(_breakpoint): { | |
2633 Bytecodes::Code original_bytecode; | |
2634 DECACHE_STATE(); | |
2635 SET_LAST_JAVA_FRAME(); | |
2636 original_bytecode = InterpreterRuntime::get_original_bytecode_at(THREAD, | |
2637 METHOD, pc); | |
2638 RESET_LAST_JAVA_FRAME(); | |
2639 CACHE_STATE(); | |
2640 if (THREAD->has_pending_exception()) goto handle_exception; | |
2641 CALL_VM(InterpreterRuntime::_breakpoint(THREAD, METHOD, pc), | |
2642 handle_exception); | |
2643 | |
2644 opcode = (jubyte)original_bytecode; | |
2645 goto opcode_switch; | |
2646 } | |
2647 | |
2648 DEFAULT: | |
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|
2649 fatal(err_msg("Unimplemented opcode %d = %s", opcode, |
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6888954: argument formatting for assert() and friends
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1347
diff
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|
2650 Bytecodes::name((Bytecodes::Code)opcode))); |
0 | 2651 goto finish; |
2652 | |
2653 } /* switch(opc) */ | |
2654 | |
2655 | |
2656 #ifdef USELABELS | |
2657 check_for_exception: | |
2658 #endif | |
2659 { | |
2660 if (!THREAD->has_pending_exception()) { | |
2661 CONTINUE; | |
2662 } | |
2663 /* We will be gcsafe soon, so flush our state. */ | |
2664 DECACHE_PC(); | |
2665 goto handle_exception; | |
2666 } | |
2667 do_continue: ; | |
2668 | |
2669 } /* while (1) interpreter loop */ | |
2670 | |
2671 | |
2672 // An exception exists in the thread state see whether this activation can handle it | |
2673 handle_exception: { | |
2674 | |
2675 HandleMarkCleaner __hmc(THREAD); | |
2676 Handle except_oop(THREAD, THREAD->pending_exception()); | |
2677 // Prevent any subsequent HandleMarkCleaner in the VM | |
2678 // from freeing the except_oop handle. | |
2679 HandleMark __hm(THREAD); | |
2680 | |
2681 THREAD->clear_pending_exception(); | |
2682 assert(except_oop(), "No exception to process"); | |
2683 intptr_t continuation_bci; | |
2684 // expression stack is emptied | |
1509 | 2685 topOfStack = istate->stack_base() - Interpreter::stackElementWords; |
0 | 2686 CALL_VM(continuation_bci = (intptr_t)InterpreterRuntime::exception_handler_for_exception(THREAD, except_oop()), |
2687 handle_exception); | |
2688 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2689 except_oop = THREAD->vm_result(); |
0 | 2690 THREAD->set_vm_result(NULL); |
2691 if (continuation_bci >= 0) { | |
2692 // Place exception on top of stack | |
2693 SET_STACK_OBJECT(except_oop(), 0); | |
2694 MORE_STACK(1); | |
2695 pc = METHOD->code_base() + continuation_bci; | |
2696 if (TraceExceptions) { | |
2697 ttyLocker ttyl; | |
2698 ResourceMark rm; | |
2699 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
2700 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
2701 tty->print_cr(" at bci %d, continuing at %d for thread " INTPTR_FORMAT, | |
2702 pc - (intptr_t)METHOD->code_base(), | |
2703 continuation_bci, THREAD); | |
2704 } | |
2705 // for AbortVMOnException flag | |
2706 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
2707 goto run; | |
2708 } | |
2709 if (TraceExceptions) { | |
2710 ttyLocker ttyl; | |
2711 ResourceMark rm; | |
2712 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
2713 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
2714 tty->print_cr(" at bci %d, unwinding for thread " INTPTR_FORMAT, | |
2715 pc - (intptr_t) METHOD->code_base(), | |
2716 THREAD); | |
2717 } | |
2718 // for AbortVMOnException flag | |
2719 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
2720 // No handler in this activation, unwind and try again | |
2721 THREAD->set_pending_exception(except_oop(), NULL, 0); | |
2722 goto handle_return; | |
14400
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2723 } // handle_exception: |
0 | 2724 |
2725 // Return from an interpreter invocation with the result of the interpretation | |
2726 // on the top of the Java Stack (or a pending exception) | |
2727 | |
14400
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2728 handle_Pop_Frame: { |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2729 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2730 // We don't really do anything special here except we must be aware |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2731 // that we can get here without ever locking the method (if sync). |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2732 // Also we skip the notification of the exit. |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2733 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2734 istate->set_msg(popping_frame); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2735 // Clear pending so while the pop is in process |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2736 // we don't start another one if a call_vm is done. |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2737 THREAD->clr_pop_frame_pending(); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2738 // Let interpreter (only) see the we're in the process of popping a frame |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2739 THREAD->set_pop_frame_in_process(); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2740 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2741 goto handle_return; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2742 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2743 } // handle_Pop_Frame |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2744 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2745 // ForceEarlyReturn ends a method, and returns to the caller with a return value |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2746 // given by the invoker of the early return. |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2747 handle_Early_Return: { |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2748 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2749 istate->set_msg(early_return); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2750 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2751 // Clear expression stack. |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2752 topOfStack = istate->stack_base() - Interpreter::stackElementWords; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2753 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2754 JvmtiThreadState *ts = THREAD->jvmti_thread_state(); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2755 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2756 // Push the value to be returned. |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2757 switch (istate->method()->result_type()) { |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2758 case T_BOOLEAN: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2759 case T_SHORT: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2760 case T_BYTE: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2761 case T_CHAR: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2762 case T_INT: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2763 SET_STACK_INT(->earlyret_value().i, 0); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2764 MORE_STACK(1); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2765 break; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2766 case T_LONG: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2767 SET_STACK_LONG(ts->earlyret_value().j, 1); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2768 MORE_STACK(2); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2769 break; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2770 case T_FLOAT: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2771 SET_STACK_FLOAT(ts->earlyret_value().f, 0); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2772 MORE_STACK(1); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2773 break; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2774 case T_DOUBLE: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2775 SET_STACK_DOUBLE(ts->earlyret_value().d, 1); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2776 MORE_STACK(2); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2777 break; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2778 case T_ARRAY: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2779 case T_OBJECT: |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2780 SET_STACK_OBJECT(ts->earlyret_oop(), 0); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2781 MORE_STACK(1); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2782 break; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2783 } |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2784 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2785 ts->clr_earlyret_value(); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2786 ts->set_earlyret_oop(NULL); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2787 ts->clr_earlyret_pending(); |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2788 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2789 // Fall through to handle_return. |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2790 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2791 } // handle_Early_Return |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2792 |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2793 handle_return: { |
0 | 2794 DECACHE_STATE(); |
2795 | |
14400
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2796 bool suppress_error = istate->msg() == popping_frame || istate->msg() == early_return; |
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2797 bool suppress_exit_event = THREAD->has_pending_exception() || istate->msg() == popping_frame; |
0 | 2798 Handle original_exception(THREAD, THREAD->pending_exception()); |
2799 Handle illegal_state_oop(THREAD, NULL); | |
2800 | |
2801 // We'd like a HandleMark here to prevent any subsequent HandleMarkCleaner | |
2802 // in any following VM entries from freeing our live handles, but illegal_state_oop | |
2803 // isn't really allocated yet and so doesn't become live until later and | |
2804 // in unpredicatable places. Instead we must protect the places where we enter the | |
2805 // VM. It would be much simpler (and safer) if we could allocate a real handle with | |
2806 // a NULL oop in it and then overwrite the oop later as needed. This isn't | |
2807 // unfortunately isn't possible. | |
2808 | |
2809 THREAD->clear_pending_exception(); | |
2810 | |
2811 // | |
2812 // As far as we are concerned we have returned. If we have a pending exception | |
2813 // that will be returned as this invocation's result. However if we get any | |
2814 // exception(s) while checking monitor state one of those IllegalMonitorStateExceptions | |
2815 // will be our final result (i.e. monitor exception trumps a pending exception). | |
2816 // | |
2817 | |
2818 // If we never locked the method (or really passed the point where we would have), | |
2819 // there is no need to unlock it (or look for other monitors), since that | |
2820 // could not have happened. | |
2821 | |
2822 if (THREAD->do_not_unlock()) { | |
2823 | |
2824 // Never locked, reset the flag now because obviously any caller must | |
2825 // have passed their point of locking for us to have gotten here. | |
2826 | |
2827 THREAD->clr_do_not_unlock(); | |
2828 } else { | |
2829 // At this point we consider that we have returned. We now check that the | |
2830 // locks were properly block structured. If we find that they were not | |
2831 // used properly we will return with an illegal monitor exception. | |
2832 // The exception is checked by the caller not the callee since this | |
2833 // checking is considered to be part of the invocation and therefore | |
2834 // in the callers scope (JVM spec 8.13). | |
2835 // | |
2836 // Another weird thing to watch for is if the method was locked | |
2837 // recursively and then not exited properly. This means we must | |
2838 // examine all the entries in reverse time(and stack) order and | |
2839 // unlock as we find them. If we find the method monitor before | |
2840 // we are at the initial entry then we should throw an exception. | |
2841 // It is not clear the template based interpreter does this | |
2842 // correctly | |
2843 | |
2844 BasicObjectLock* base = istate->monitor_base(); | |
2845 BasicObjectLock* end = (BasicObjectLock*) istate->stack_base(); | |
2846 bool method_unlock_needed = METHOD->is_synchronized(); | |
2847 // We know the initial monitor was used for the method don't check that | |
2848 // slot in the loop | |
2849 if (method_unlock_needed) base--; | |
2850 | |
2851 // Check all the monitors to see they are unlocked. Install exception if found to be locked. | |
2852 while (end < base) { | |
2853 oop lockee = end->obj(); | |
2854 if (lockee != NULL) { | |
2855 BasicLock* lock = end->lock(); | |
2856 markOop header = lock->displaced_header(); | |
2857 end->set_obj(NULL); | |
14395
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2858 |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2859 if (!lockee->mark()->has_bias_pattern()) { |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2860 // If it isn't recursive we either must swap old header or call the runtime |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2861 if (header != NULL) { |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2862 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2863 // restore object for the slow case |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2864 end->set_obj(lockee); |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2865 { |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2866 // Prevent any HandleMarkCleaner from freeing our live handles |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2867 HandleMark __hm(THREAD); |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2868 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, end)); |
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
goetz
parents:
10393
diff
changeset
|
2869 } |
0 | 2870 } |
2871 } | |
2872 } | |
2873 // One error is plenty | |
2874 if (illegal_state_oop() == NULL && !suppress_error) { | |
2875 { | |
2876 // Prevent any HandleMarkCleaner from freeing our live handles | |
2877 HandleMark __hm(THREAD); | |
2878 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
2879 } | |
2880 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
2881 illegal_state_oop = THREAD->pending_exception(); | |
2882 THREAD->clear_pending_exception(); | |
2883 } | |
2884 } | |
2885 end++; | |
2886 } | |
2887 // Unlock the method if needed | |
2888 if (method_unlock_needed) { | |
2889 if (base->obj() == NULL) { | |
2890 // The method is already unlocked this is not good. | |
2891 if (illegal_state_oop() == NULL && !suppress_error) { | |
2892 { | |
2893 // Prevent any HandleMarkCleaner from freeing our live handles | |
2894 HandleMark __hm(THREAD); | |
2895 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
2896 } | |
2897 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
2898 illegal_state_oop = THREAD->pending_exception(); | |
2899 THREAD->clear_pending_exception(); | |
2900 } | |
2901 } else { | |
2902 // | |
2903 // The initial monitor is always used for the method | |
2904 // However if that slot is no longer the oop for the method it was unlocked | |
2905 // and reused by something that wasn't unlocked! | |
2906 // | |
2907 // deopt can come in with rcvr dead because c2 knows | |
2908 // its value is preserved in the monitor. So we can't use locals[0] at all | |
2909 // and must use first monitor slot. | |
2910 // | |
2911 oop rcvr = base->obj(); | |
2912 if (rcvr == NULL) { | |
2913 if (!suppress_error) { | |
2914 VM_JAVA_ERROR_NO_JUMP(vmSymbols::java_lang_NullPointerException(), ""); | |
2915 illegal_state_oop = THREAD->pending_exception(); | |
2916 THREAD->clear_pending_exception(); | |
2917 } | |
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2918 } else if (UseHeavyMonitors) { |
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2919 { |
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2920 // Prevent any HandleMarkCleaner from freeing our live handles. |
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2921 HandleMark __hm(THREAD); |
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2922 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base)); |
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2923 } |
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2924 if (THREAD->has_pending_exception()) { |
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2925 if (!suppress_error) illegal_state_oop = THREAD->pending_exception(); |
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2926 THREAD->clear_pending_exception(); |
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2927 } |
0 | 2928 } else { |
2929 BasicLock* lock = base->lock(); | |
2930 markOop header = lock->displaced_header(); | |
2931 base->set_obj(NULL); | |
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2932 |
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2933 if (!rcvr->mark()->has_bias_pattern()) { |
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2934 base->set_obj(NULL); |
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2935 // If it isn't recursive we either must swap old header or call the runtime |
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2936 if (header != NULL) { |
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2937 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) { |
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2938 // restore object for the slow case |
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2939 base->set_obj(rcvr); |
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2940 { |
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2941 // Prevent any HandleMarkCleaner from freeing our live handles |
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2942 HandleMark __hm(THREAD); |
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2943 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base)); |
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2944 } |
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2945 if (THREAD->has_pending_exception()) { |
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2946 if (!suppress_error) illegal_state_oop = THREAD->pending_exception(); |
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2947 THREAD->clear_pending_exception(); |
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2948 } |
0 | 2949 } |
2950 } | |
2951 } | |
2952 } | |
2953 } | |
2954 } | |
2955 } | |
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2956 // Clear the do_not_unlock flag now. |
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2957 THREAD->clr_do_not_unlock(); |
0 | 2958 |
2959 // | |
2960 // Notify jvmti/jvmdi | |
2961 // | |
2962 // NOTE: we do not notify a method_exit if we have a pending exception, | |
2963 // including an exception we generate for unlocking checks. In the former | |
2964 // case, JVMDI has already been notified by our call for the exception handler | |
2965 // and in both cases as far as JVMDI is concerned we have already returned. | |
2966 // If we notify it again JVMDI will be all confused about how many frames | |
2967 // are still on the stack (4340444). | |
2968 // | |
2969 // NOTE Further! It turns out the the JVMTI spec in fact expects to see | |
2970 // method_exit events whenever we leave an activation unless it was done | |
2971 // for popframe. This is nothing like jvmdi. However we are passing the | |
2972 // tests at the moment (apparently because they are jvmdi based) so rather | |
2973 // than change this code and possibly fail tests we will leave it alone | |
2974 // (with this note) in anticipation of changing the vm and the tests | |
2975 // simultaneously. | |
2976 | |
2977 | |
2978 // | |
2979 suppress_exit_event = suppress_exit_event || illegal_state_oop() != NULL; | |
2980 | |
2981 | |
2982 | |
2983 #ifdef VM_JVMTI | |
2984 if (_jvmti_interp_events) { | |
2985 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2986 // entry/exit events are sent for that thread to track stack depth. | |
2987 if ( !suppress_exit_event && THREAD->is_interp_only_mode() ) { | |
2988 { | |
2989 // Prevent any HandleMarkCleaner from freeing our live handles | |
2990 HandleMark __hm(THREAD); | |
2991 CALL_VM_NOCHECK(InterpreterRuntime::post_method_exit(THREAD)); | |
2992 } | |
2993 } | |
2994 } | |
2995 #endif /* VM_JVMTI */ | |
2996 | |
2997 // | |
2998 // See if we are returning any exception | |
2999 // A pending exception that was pending prior to a possible popping frame | |
3000 // overrides the popping frame. | |
3001 // | |
3002 assert(!suppress_error || suppress_error && illegal_state_oop() == NULL, "Error was not suppressed"); | |
3003 if (illegal_state_oop() != NULL || original_exception() != NULL) { | |
3004 // inform the frame manager we have no result | |
3005 istate->set_msg(throwing_exception); | |
3006 if (illegal_state_oop() != NULL) | |
3007 THREAD->set_pending_exception(illegal_state_oop(), NULL, 0); | |
3008 else | |
3009 THREAD->set_pending_exception(original_exception(), NULL, 0); | |
3010 UPDATE_PC_AND_RETURN(0); | |
3011 } | |
3012 | |
3013 if (istate->msg() == popping_frame) { | |
3014 // Make it simpler on the assembly code and set the message for the frame pop. | |
3015 // returns | |
3016 if (istate->prev() == NULL) { | |
3017 // We must be returning to a deoptimized frame (because popframe only happens between | |
3018 // two interpreted frames). We need to save the current arguments in C heap so that | |
3019 // the deoptimized frame when it restarts can copy the arguments to its expression | |
3020 // stack and re-execute the call. We also have to notify deoptimization that this | |
605 | 3021 // has occurred and to pick the preserved args copy them to the deoptimized frame's |
0 | 3022 // java expression stack. Yuck. |
3023 // | |
3024 THREAD->popframe_preserve_args(in_ByteSize(METHOD->size_of_parameters() * wordSize), | |
3025 LOCALS_SLOT(METHOD->size_of_parameters() - 1)); | |
3026 THREAD->set_popframe_condition_bit(JavaThread::popframe_force_deopt_reexecution_bit); | |
3027 } | |
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3028 } else { |
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3029 istate->set_msg(return_from_method); |
0 | 3030 } |
1681
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3031 |
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3032 // Normal return |
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3033 // Advance the pc and return to frame manager |
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3034 UPDATE_PC_AND_RETURN(1); |
0 | 3035 } /* handle_return: */ |
3036 | |
3037 // This is really a fatal error return | |
3038 | |
3039 finish: | |
3040 DECACHE_TOS(); | |
3041 DECACHE_PC(); | |
3042 | |
3043 return; | |
3044 } | |
3045 | |
3046 /* | |
3047 * All the code following this point is only produced once and is not present | |
3048 * in the JVMTI version of the interpreter | |
3049 */ | |
3050 | |
3051 #ifndef VM_JVMTI | |
3052 | |
3053 // This constructor should only be used to contruct the object to signal | |
3054 // interpreter initialization. All other instances should be created by | |
3055 // the frame manager. | |
3056 BytecodeInterpreter::BytecodeInterpreter(messages msg) { | |
3057 if (msg != initialize) ShouldNotReachHere(); | |
3058 _msg = msg; | |
3059 _self_link = this; | |
3060 _prev_link = NULL; | |
3061 } | |
3062 | |
3063 // Inline static functions for Java Stack and Local manipulation | |
3064 | |
3065 // The implementations are platform dependent. We have to worry about alignment | |
3066 // issues on some machines which can change on the same platform depending on | |
3067 // whether it is an LP64 machine also. | |
3068 address BytecodeInterpreter::stack_slot(intptr_t *tos, int offset) { | |
3069 return (address) tos[Interpreter::expr_index_at(-offset)]; | |
3070 } | |
3071 | |
3072 jint BytecodeInterpreter::stack_int(intptr_t *tos, int offset) { | |
3073 return *((jint*) &tos[Interpreter::expr_index_at(-offset)]); | |
3074 } | |
3075 | |
3076 jfloat BytecodeInterpreter::stack_float(intptr_t *tos, int offset) { | |
3077 return *((jfloat *) &tos[Interpreter::expr_index_at(-offset)]); | |
3078 } | |
3079 | |
3080 oop BytecodeInterpreter::stack_object(intptr_t *tos, int offset) { | |
3081 return (oop)tos [Interpreter::expr_index_at(-offset)]; | |
3082 } | |
3083 | |
3084 jdouble BytecodeInterpreter::stack_double(intptr_t *tos, int offset) { | |
3085 return ((VMJavaVal64*) &tos[Interpreter::expr_index_at(-offset)])->d; | |
3086 } | |
3087 | |
3088 jlong BytecodeInterpreter::stack_long(intptr_t *tos, int offset) { | |
3089 return ((VMJavaVal64 *) &tos[Interpreter::expr_index_at(-offset)])->l; | |
3090 } | |
3091 | |
3092 // only used for value types | |
3093 void BytecodeInterpreter::set_stack_slot(intptr_t *tos, address value, | |
3094 int offset) { | |
3095 *((address *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
3096 } | |
3097 | |
3098 void BytecodeInterpreter::set_stack_int(intptr_t *tos, int value, | |
3099 int offset) { | |
3100 *((jint *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
3101 } | |
3102 | |
3103 void BytecodeInterpreter::set_stack_float(intptr_t *tos, jfloat value, | |
3104 int offset) { | |
3105 *((jfloat *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
3106 } | |
3107 | |
3108 void BytecodeInterpreter::set_stack_object(intptr_t *tos, oop value, | |
3109 int offset) { | |
3110 *((oop *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
3111 } | |
3112 | |
3113 // needs to be platform dep for the 32 bit platforms. | |
3114 void BytecodeInterpreter::set_stack_double(intptr_t *tos, jdouble value, | |
3115 int offset) { | |
3116 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = value; | |
3117 } | |
3118 | |
3119 void BytecodeInterpreter::set_stack_double_from_addr(intptr_t *tos, | |
3120 address addr, int offset) { | |
3121 (((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = | |
3122 ((VMJavaVal64*)addr)->d); | |
3123 } | |
3124 | |
3125 void BytecodeInterpreter::set_stack_long(intptr_t *tos, jlong value, | |
3126 int offset) { | |
3127 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
3128 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = value; | |
3129 } | |
3130 | |
3131 void BytecodeInterpreter::set_stack_long_from_addr(intptr_t *tos, | |
3132 address addr, int offset) { | |
3133 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
3134 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = | |
3135 ((VMJavaVal64*)addr)->l; | |
3136 } | |
3137 | |
3138 // Locals | |
3139 | |
3140 address BytecodeInterpreter::locals_slot(intptr_t* locals, int offset) { | |
3141 return (address)locals[Interpreter::local_index_at(-offset)]; | |
3142 } | |
3143 jint BytecodeInterpreter::locals_int(intptr_t* locals, int offset) { | |
3144 return (jint)locals[Interpreter::local_index_at(-offset)]; | |
3145 } | |
3146 jfloat BytecodeInterpreter::locals_float(intptr_t* locals, int offset) { | |
3147 return (jfloat)locals[Interpreter::local_index_at(-offset)]; | |
3148 } | |
3149 oop BytecodeInterpreter::locals_object(intptr_t* locals, int offset) { | |
3150 return (oop)locals[Interpreter::local_index_at(-offset)]; | |
3151 } | |
3152 jdouble BytecodeInterpreter::locals_double(intptr_t* locals, int offset) { | |
3153 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d; | |
3154 } | |
3155 jlong BytecodeInterpreter::locals_long(intptr_t* locals, int offset) { | |
3156 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l; | |
3157 } | |
3158 | |
3159 // Returns the address of locals value. | |
3160 address BytecodeInterpreter::locals_long_at(intptr_t* locals, int offset) { | |
3161 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
3162 } | |
3163 address BytecodeInterpreter::locals_double_at(intptr_t* locals, int offset) { | |
3164 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
3165 } | |
3166 | |
3167 // Used for local value or returnAddress | |
3168 void BytecodeInterpreter::set_locals_slot(intptr_t *locals, | |
3169 address value, int offset) { | |
3170 *((address*)&locals[Interpreter::local_index_at(-offset)]) = value; | |
3171 } | |
3172 void BytecodeInterpreter::set_locals_int(intptr_t *locals, | |
3173 jint value, int offset) { | |
3174 *((jint *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
3175 } | |
3176 void BytecodeInterpreter::set_locals_float(intptr_t *locals, | |
3177 jfloat value, int offset) { | |
3178 *((jfloat *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
3179 } | |
3180 void BytecodeInterpreter::set_locals_object(intptr_t *locals, | |
3181 oop value, int offset) { | |
3182 *((oop *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
3183 } | |
3184 void BytecodeInterpreter::set_locals_double(intptr_t *locals, | |
3185 jdouble value, int offset) { | |
3186 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = value; | |
3187 } | |
3188 void BytecodeInterpreter::set_locals_long(intptr_t *locals, | |
3189 jlong value, int offset) { | |
3190 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = value; | |
3191 } | |
3192 void BytecodeInterpreter::set_locals_double_from_addr(intptr_t *locals, | |
3193 address addr, int offset) { | |
3194 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = ((VMJavaVal64*)addr)->d; | |
3195 } | |
3196 void BytecodeInterpreter::set_locals_long_from_addr(intptr_t *locals, | |
3197 address addr, int offset) { | |
3198 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = ((VMJavaVal64*)addr)->l; | |
3199 } | |
3200 | |
3201 void BytecodeInterpreter::astore(intptr_t* tos, int stack_offset, | |
3202 intptr_t* locals, int locals_offset) { | |
3203 intptr_t value = tos[Interpreter::expr_index_at(-stack_offset)]; | |
3204 locals[Interpreter::local_index_at(-locals_offset)] = value; | |
3205 } | |
3206 | |
3207 | |
3208 void BytecodeInterpreter::copy_stack_slot(intptr_t *tos, int from_offset, | |
3209 int to_offset) { | |
3210 tos[Interpreter::expr_index_at(-to_offset)] = | |
3211 (intptr_t)tos[Interpreter::expr_index_at(-from_offset)]; | |
3212 } | |
3213 | |
3214 void BytecodeInterpreter::dup(intptr_t *tos) { | |
3215 copy_stack_slot(tos, -1, 0); | |
3216 } | |
3217 void BytecodeInterpreter::dup2(intptr_t *tos) { | |
3218 copy_stack_slot(tos, -2, 0); | |
3219 copy_stack_slot(tos, -1, 1); | |
3220 } | |
3221 | |
3222 void BytecodeInterpreter::dup_x1(intptr_t *tos) { | |
3223 /* insert top word two down */ | |
3224 copy_stack_slot(tos, -1, 0); | |
3225 copy_stack_slot(tos, -2, -1); | |
3226 copy_stack_slot(tos, 0, -2); | |
3227 } | |
3228 | |
3229 void BytecodeInterpreter::dup_x2(intptr_t *tos) { | |
3230 /* insert top word three down */ | |
3231 copy_stack_slot(tos, -1, 0); | |
3232 copy_stack_slot(tos, -2, -1); | |
3233 copy_stack_slot(tos, -3, -2); | |
3234 copy_stack_slot(tos, 0, -3); | |
3235 } | |
3236 void BytecodeInterpreter::dup2_x1(intptr_t *tos) { | |
3237 /* insert top 2 slots three down */ | |
3238 copy_stack_slot(tos, -1, 1); | |
3239 copy_stack_slot(tos, -2, 0); | |
3240 copy_stack_slot(tos, -3, -1); | |
3241 copy_stack_slot(tos, 1, -2); | |
3242 copy_stack_slot(tos, 0, -3); | |
3243 } | |
3244 void BytecodeInterpreter::dup2_x2(intptr_t *tos) { | |
3245 /* insert top 2 slots four down */ | |
3246 copy_stack_slot(tos, -1, 1); | |
3247 copy_stack_slot(tos, -2, 0); | |
3248 copy_stack_slot(tos, -3, -1); | |
3249 copy_stack_slot(tos, -4, -2); | |
3250 copy_stack_slot(tos, 1, -3); | |
3251 copy_stack_slot(tos, 0, -4); | |
3252 } | |
3253 | |
3254 | |
3255 void BytecodeInterpreter::swap(intptr_t *tos) { | |
3256 // swap top two elements | |
3257 intptr_t val = tos[Interpreter::expr_index_at(1)]; | |
3258 // Copy -2 entry to -1 | |
3259 copy_stack_slot(tos, -2, -1); | |
3260 // Store saved -1 entry into -2 | |
3261 tos[Interpreter::expr_index_at(2)] = val; | |
3262 } | |
3263 // -------------------------------------------------------------------------------- | |
3264 // Non-product code | |
3265 #ifndef PRODUCT | |
3266 | |
3267 const char* BytecodeInterpreter::C_msg(BytecodeInterpreter::messages msg) { | |
3268 switch (msg) { | |
3269 case BytecodeInterpreter::no_request: return("no_request"); | |
3270 case BytecodeInterpreter::initialize: return("initialize"); | |
3271 // status message to C++ interpreter | |
3272 case BytecodeInterpreter::method_entry: return("method_entry"); | |
3273 case BytecodeInterpreter::method_resume: return("method_resume"); | |
3274 case BytecodeInterpreter::got_monitors: return("got_monitors"); | |
3275 case BytecodeInterpreter::rethrow_exception: return("rethrow_exception"); | |
3276 // requests to frame manager from C++ interpreter | |
3277 case BytecodeInterpreter::call_method: return("call_method"); | |
3278 case BytecodeInterpreter::return_from_method: return("return_from_method"); | |
3279 case BytecodeInterpreter::more_monitors: return("more_monitors"); | |
3280 case BytecodeInterpreter::throwing_exception: return("throwing_exception"); | |
3281 case BytecodeInterpreter::popping_frame: return("popping_frame"); | |
3282 case BytecodeInterpreter::do_osr: return("do_osr"); | |
3283 // deopt | |
3284 case BytecodeInterpreter::deopt_resume: return("deopt_resume"); | |
3285 case BytecodeInterpreter::deopt_resume2: return("deopt_resume2"); | |
3286 default: return("BAD MSG"); | |
3287 } | |
3288 } | |
3289 void | |
3290 BytecodeInterpreter::print() { | |
3291 tty->print_cr("thread: " INTPTR_FORMAT, (uintptr_t) this->_thread); | |
3292 tty->print_cr("bcp: " INTPTR_FORMAT, (uintptr_t) this->_bcp); | |
3293 tty->print_cr("locals: " INTPTR_FORMAT, (uintptr_t) this->_locals); | |
3294 tty->print_cr("constants: " INTPTR_FORMAT, (uintptr_t) this->_constants); | |
3295 { | |
3296 ResourceMark rm; | |
3297 char *method_name = _method->name_and_sig_as_C_string(); | |
3298 tty->print_cr("method: " INTPTR_FORMAT "[ %s ]", (uintptr_t) this->_method, method_name); | |
3299 } | |
3300 tty->print_cr("mdx: " INTPTR_FORMAT, (uintptr_t) this->_mdx); | |
3301 tty->print_cr("stack: " INTPTR_FORMAT, (uintptr_t) this->_stack); | |
3302 tty->print_cr("msg: %s", C_msg(this->_msg)); | |
3303 tty->print_cr("result_to_call._callee: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee); | |
3304 tty->print_cr("result_to_call._callee_entry_point: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee_entry_point); | |
3305 tty->print_cr("result_to_call._bcp_advance: %d ", this->_result._to_call._bcp_advance); | |
3306 tty->print_cr("osr._osr_buf: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_buf); | |
3307 tty->print_cr("osr._osr_entry: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_entry); | |
3308 tty->print_cr("prev_link: " INTPTR_FORMAT, (uintptr_t) this->_prev_link); | |
3309 tty->print_cr("native_mirror: " INTPTR_FORMAT, (uintptr_t) this->_oop_temp); | |
3310 tty->print_cr("stack_base: " INTPTR_FORMAT, (uintptr_t) this->_stack_base); | |
3311 tty->print_cr("stack_limit: " INTPTR_FORMAT, (uintptr_t) this->_stack_limit); | |
3312 tty->print_cr("monitor_base: " INTPTR_FORMAT, (uintptr_t) this->_monitor_base); | |
3313 #ifdef SPARC | |
3314 tty->print_cr("last_Java_pc: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_pc); | |
3315 tty->print_cr("frame_bottom: " INTPTR_FORMAT, (uintptr_t) this->_frame_bottom); | |
3316 tty->print_cr("&native_fresult: " INTPTR_FORMAT, (uintptr_t) &this->_native_fresult); | |
3317 tty->print_cr("native_lresult: " INTPTR_FORMAT, (uintptr_t) this->_native_lresult); | |
3318 #endif | |
7994 | 3319 #if !defined(ZERO) |
0 | 3320 tty->print_cr("last_Java_fp: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_fp); |
7994 | 3321 #endif // !ZERO |
0 | 3322 tty->print_cr("self_link: " INTPTR_FORMAT, (uintptr_t) this->_self_link); |
3323 } | |
3324 | |
3325 extern "C" { | |
14395
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3326 void PI(uintptr_t arg) { |
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|
3327 ((BytecodeInterpreter*)arg)->print(); |
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3328 } |
0 | 3329 } |
3330 #endif // PRODUCT | |
3331 | |
3332 #endif // JVMTI | |
3333 #endif // CC_INTERP |