Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeInterpreter.cpp @ 9202:b6629b739a55
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 22 Apr 2013 09:54:57 +0200 |
parents | 9fae07c31641 |
children | e60b3fce2b02 |
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/cardTableModRefBS.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "oops/objArrayKlass.hpp" | |
36 #include "oops/oop.inline.hpp" | |
37 #include "prims/jvmtiExport.hpp" | |
38 #include "runtime/frame.inline.hpp" | |
39 #include "runtime/handles.inline.hpp" | |
40 #include "runtime/interfaceSupport.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/threadCritical.hpp" | |
43 #include "utilities/exceptions.hpp" | |
44 #ifdef TARGET_OS_ARCH_linux_x86 | |
45 # include "orderAccess_linux_x86.inline.hpp" | |
46 #endif | |
47 #ifdef TARGET_OS_ARCH_linux_sparc | |
48 # include "orderAccess_linux_sparc.inline.hpp" | |
49 #endif | |
50 #ifdef TARGET_OS_ARCH_linux_zero | |
51 # include "orderAccess_linux_zero.inline.hpp" | |
52 #endif | |
53 #ifdef TARGET_OS_ARCH_solaris_x86 | |
54 # include "orderAccess_solaris_x86.inline.hpp" | |
55 #endif | |
56 #ifdef TARGET_OS_ARCH_solaris_sparc | |
57 # include "orderAccess_solaris_sparc.inline.hpp" | |
58 #endif | |
59 #ifdef TARGET_OS_ARCH_windows_x86 | |
60 # include "orderAccess_windows_x86.inline.hpp" | |
61 #endif | |
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62 #ifdef TARGET_OS_ARCH_linux_arm |
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63 # include "orderAccess_linux_arm.inline.hpp" |
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64 #endif |
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65 #ifdef TARGET_OS_ARCH_linux_ppc |
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66 # include "orderAccess_linux_ppc.inline.hpp" |
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67 #endif |
3960 | 68 #ifdef TARGET_OS_ARCH_bsd_x86 |
69 # include "orderAccess_bsd_x86.inline.hpp" | |
70 #endif | |
71 #ifdef TARGET_OS_ARCH_bsd_zero | |
72 # include "orderAccess_bsd_zero.inline.hpp" | |
73 #endif | |
1972 | 74 |
0 | 75 |
76 // no precompiled headers | |
77 #ifdef CC_INTERP | |
78 | |
79 /* | |
80 * USELABELS - If using GCC, then use labels for the opcode dispatching | |
81 * rather -then a switch statement. This improves performance because it | |
82 * gives us the oportunity to have the instructions that calculate the | |
83 * next opcode to jump to be intermixed with the rest of the instructions | |
84 * that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro). | |
85 */ | |
86 #undef USELABELS | |
87 #ifdef __GNUC__ | |
88 /* | |
89 ASSERT signifies debugging. It is much easier to step thru bytecodes if we | |
90 don't use the computed goto approach. | |
91 */ | |
92 #ifndef ASSERT | |
93 #define USELABELS | |
94 #endif | |
95 #endif | |
96 | |
97 #undef CASE | |
98 #ifdef USELABELS | |
99 #define CASE(opcode) opc ## opcode | |
100 #define DEFAULT opc_default | |
101 #else | |
102 #define CASE(opcode) case Bytecodes:: opcode | |
103 #define DEFAULT default | |
104 #endif | |
105 | |
106 /* | |
107 * PREFETCH_OPCCODE - Some compilers do better if you prefetch the next | |
108 * opcode before going back to the top of the while loop, rather then having | |
109 * the top of the while loop handle it. This provides a better opportunity | |
110 * for instruction scheduling. Some compilers just do this prefetch | |
111 * automatically. Some actually end up with worse performance if you | |
112 * force the prefetch. Solaris gcc seems to do better, but cc does worse. | |
113 */ | |
114 #undef PREFETCH_OPCCODE | |
115 #define PREFETCH_OPCCODE | |
116 | |
117 /* | |
118 Interpreter safepoint: it is expected that the interpreter will have no live | |
119 handles of its own creation live at an interpreter safepoint. Therefore we | |
120 run a HandleMarkCleaner and trash all handles allocated in the call chain | |
121 since the JavaCalls::call_helper invocation that initiated the chain. | |
122 There really shouldn't be any handles remaining to trash but this is cheap | |
123 in relation to a safepoint. | |
124 */ | |
125 #define SAFEPOINT \ | |
126 if ( SafepointSynchronize::is_synchronizing()) { \ | |
127 { \ | |
128 /* zap freed handles rather than GC'ing them */ \ | |
129 HandleMarkCleaner __hmc(THREAD); \ | |
130 } \ | |
131 CALL_VM(SafepointSynchronize::block(THREAD), handle_exception); \ | |
132 } | |
133 | |
134 /* | |
135 * VM_JAVA_ERROR - Macro for throwing a java exception from | |
136 * the interpreter loop. Should really be a CALL_VM but there | |
137 * is no entry point to do the transition to vm so we just | |
138 * do it by hand here. | |
139 */ | |
140 #define VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
141 DECACHE_STATE(); \ | |
142 SET_LAST_JAVA_FRAME(); \ | |
143 { \ | |
144 ThreadInVMfromJava trans(THREAD); \ | |
145 Exceptions::_throw_msg(THREAD, __FILE__, __LINE__, name, msg); \ | |
146 } \ | |
147 RESET_LAST_JAVA_FRAME(); \ | |
148 CACHE_STATE(); | |
149 | |
150 // Normal throw of a java error | |
151 #define VM_JAVA_ERROR(name, msg) \ | |
152 VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
153 goto handle_exception; | |
154 | |
155 #ifdef PRODUCT | |
156 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) | |
157 #else | |
158 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) \ | |
159 { \ | |
160 BytecodeCounter::_counter_value++; \ | |
161 BytecodeHistogram::_counters[(Bytecodes::Code)opcode]++; \ | |
162 if (StopInterpreterAt && StopInterpreterAt == BytecodeCounter::_counter_value) os::breakpoint(); \ | |
163 if (TraceBytecodes) { \ | |
164 CALL_VM((void)SharedRuntime::trace_bytecode(THREAD, 0, \ | |
165 topOfStack[Interpreter::expr_index_at(1)], \ | |
166 topOfStack[Interpreter::expr_index_at(2)]), \ | |
167 handle_exception); \ | |
168 } \ | |
169 } | |
170 #endif | |
171 | |
172 #undef DEBUGGER_SINGLE_STEP_NOTIFY | |
173 #ifdef VM_JVMTI | |
174 /* NOTE: (kbr) This macro must be called AFTER the PC has been | |
175 incremented. JvmtiExport::at_single_stepping_point() may cause a | |
176 breakpoint opcode to get inserted at the current PC to allow the | |
177 debugger to coalesce single-step events. | |
178 | |
179 As a result if we call at_single_stepping_point() we refetch opcode | |
180 to get the current opcode. This will override any other prefetching | |
181 that might have occurred. | |
182 */ | |
183 #define DEBUGGER_SINGLE_STEP_NOTIFY() \ | |
184 { \ | |
185 if (_jvmti_interp_events) { \ | |
186 if (JvmtiExport::should_post_single_step()) { \ | |
187 DECACHE_STATE(); \ | |
188 SET_LAST_JAVA_FRAME(); \ | |
189 ThreadInVMfromJava trans(THREAD); \ | |
190 JvmtiExport::at_single_stepping_point(THREAD, \ | |
191 istate->method(), \ | |
192 pc); \ | |
193 RESET_LAST_JAVA_FRAME(); \ | |
194 CACHE_STATE(); \ | |
195 if (THREAD->pop_frame_pending() && \ | |
196 !THREAD->pop_frame_in_process()) { \ | |
197 goto handle_Pop_Frame; \ | |
198 } \ | |
199 opcode = *pc; \ | |
200 } \ | |
201 } \ | |
202 } | |
203 #else | |
204 #define DEBUGGER_SINGLE_STEP_NOTIFY() | |
205 #endif | |
206 | |
207 /* | |
208 * CONTINUE - Macro for executing the next opcode. | |
209 */ | |
210 #undef CONTINUE | |
211 #ifdef USELABELS | |
212 // Have to do this dispatch this way in C++ because otherwise gcc complains about crossing an | |
213 // initialization (which is is the initialization of the table pointer...) | |
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214 #define DISPATCH(opcode) goto *(void*)dispatch_table[opcode] |
0 | 215 #define CONTINUE { \ |
216 opcode = *pc; \ | |
217 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
218 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
219 DISPATCH(opcode); \ | |
220 } | |
221 #else | |
222 #ifdef PREFETCH_OPCCODE | |
223 #define CONTINUE { \ | |
224 opcode = *pc; \ | |
225 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
226 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
227 continue; \ | |
228 } | |
229 #else | |
230 #define CONTINUE { \ | |
231 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
232 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
233 continue; \ | |
234 } | |
235 #endif | |
236 #endif | |
237 | |
238 | |
239 #define UPDATE_PC(opsize) {pc += opsize; } | |
240 /* | |
241 * UPDATE_PC_AND_TOS - Macro for updating the pc and topOfStack. | |
242 */ | |
243 #undef UPDATE_PC_AND_TOS | |
244 #define UPDATE_PC_AND_TOS(opsize, stack) \ | |
245 {pc += opsize; MORE_STACK(stack); } | |
246 | |
247 /* | |
248 * UPDATE_PC_AND_TOS_AND_CONTINUE - Macro for updating the pc and topOfStack, | |
249 * and executing the next opcode. It's somewhat similar to the combination | |
250 * of UPDATE_PC_AND_TOS and CONTINUE, but with some minor optimizations. | |
251 */ | |
252 #undef UPDATE_PC_AND_TOS_AND_CONTINUE | |
253 #ifdef USELABELS | |
254 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
255 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
256 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
257 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
258 DISPATCH(opcode); \ | |
259 } | |
260 | |
261 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
262 pc += opsize; opcode = *pc; \ | |
263 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
264 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
265 DISPATCH(opcode); \ | |
266 } | |
267 #else | |
268 #ifdef PREFETCH_OPCCODE | |
269 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
270 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
271 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
272 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
273 goto do_continue; \ | |
274 } | |
275 | |
276 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
277 pc += opsize; opcode = *pc; \ | |
278 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
279 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
280 goto do_continue; \ | |
281 } | |
282 #else | |
283 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
284 pc += opsize; MORE_STACK(stack); \ | |
285 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
286 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
287 goto do_continue; \ | |
288 } | |
289 | |
290 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
291 pc += opsize; \ | |
292 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
293 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
294 goto do_continue; \ | |
295 } | |
296 #endif /* PREFETCH_OPCCODE */ | |
297 #endif /* USELABELS */ | |
298 | |
299 // About to call a new method, update the save the adjusted pc and return to frame manager | |
300 #define UPDATE_PC_AND_RETURN(opsize) \ | |
301 DECACHE_TOS(); \ | |
302 istate->set_bcp(pc+opsize); \ | |
303 return; | |
304 | |
305 | |
306 #define METHOD istate->method() | |
307 #define INVOCATION_COUNT METHOD->invocation_counter() | |
308 #define BACKEDGE_COUNT METHOD->backedge_counter() | |
309 | |
310 | |
311 #define INCR_INVOCATION_COUNT INVOCATION_COUNT->increment() | |
312 #define OSR_REQUEST(res, branch_pc) \ | |
313 CALL_VM(res=InterpreterRuntime::frequency_counter_overflow(THREAD, branch_pc), handle_exception); | |
314 /* | |
315 * For those opcodes that need to have a GC point on a backwards branch | |
316 */ | |
317 | |
318 // Backedge counting is kind of strange. The asm interpreter will increment | |
319 // the backedge counter as a separate counter but it does it's comparisons | |
320 // to the sum (scaled) of invocation counter and backedge count to make | |
321 // a decision. Seems kind of odd to sum them together like that | |
322 | |
323 // skip is delta from current bcp/bci for target, branch_pc is pre-branch bcp | |
324 | |
325 | |
326 #define DO_BACKEDGE_CHECKS(skip, branch_pc) \ | |
327 if ((skip) <= 0) { \ | |
1078 | 328 if (UseLoopCounter) { \ |
0 | 329 bool do_OSR = UseOnStackReplacement; \ |
330 BACKEDGE_COUNT->increment(); \ | |
331 if (do_OSR) do_OSR = BACKEDGE_COUNT->reached_InvocationLimit(); \ | |
332 if (do_OSR) { \ | |
333 nmethod* osr_nmethod; \ | |
334 OSR_REQUEST(osr_nmethod, branch_pc); \ | |
335 if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \ | |
1078 | 336 intptr_t* buf = SharedRuntime::OSR_migration_begin(THREAD); \ |
0 | 337 istate->set_msg(do_osr); \ |
338 istate->set_osr_buf((address)buf); \ | |
339 istate->set_osr_entry(osr_nmethod->osr_entry()); \ | |
340 return; \ | |
341 } \ | |
342 } \ | |
343 } /* UseCompiler ... */ \ | |
344 INCR_INVOCATION_COUNT; \ | |
345 SAFEPOINT; \ | |
346 } | |
347 | |
348 /* | |
349 * For those opcodes that need to have a GC point on a backwards branch | |
350 */ | |
351 | |
352 /* | |
353 * Macros for caching and flushing the interpreter state. Some local | |
354 * variables need to be flushed out to the frame before we do certain | |
355 * things (like pushing frames or becomming gc safe) and some need to | |
356 * be recached later (like after popping a frame). We could use one | |
357 * macro to cache or decache everything, but this would be less then | |
358 * optimal because we don't always need to cache or decache everything | |
359 * because some things we know are already cached or decached. | |
360 */ | |
361 #undef DECACHE_TOS | |
362 #undef CACHE_TOS | |
363 #undef CACHE_PREV_TOS | |
364 #define DECACHE_TOS() istate->set_stack(topOfStack); | |
365 | |
366 #define CACHE_TOS() topOfStack = (intptr_t *)istate->stack(); | |
367 | |
368 #undef DECACHE_PC | |
369 #undef CACHE_PC | |
370 #define DECACHE_PC() istate->set_bcp(pc); | |
371 #define CACHE_PC() pc = istate->bcp(); | |
372 #define CACHE_CP() cp = istate->constants(); | |
373 #define CACHE_LOCALS() locals = istate->locals(); | |
374 #undef CACHE_FRAME | |
375 #define CACHE_FRAME() | |
376 | |
377 /* | |
378 * CHECK_NULL - Macro for throwing a NullPointerException if the object | |
379 * passed is a null ref. | |
380 * On some architectures/platforms it should be possible to do this implicitly | |
381 */ | |
382 #undef CHECK_NULL | |
383 #define CHECK_NULL(obj_) \ | |
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384 if ((obj_) == NULL) { \ |
0 | 385 VM_JAVA_ERROR(vmSymbols::java_lang_NullPointerException(), ""); \ |
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386 } \ |
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387 VERIFY_OOP(obj_) |
0 | 388 |
389 #define VMdoubleConstZero() 0.0 | |
390 #define VMdoubleConstOne() 1.0 | |
391 #define VMlongConstZero() (max_jlong-max_jlong) | |
392 #define VMlongConstOne() ((max_jlong-max_jlong)+1) | |
393 | |
394 /* | |
395 * Alignment | |
396 */ | |
397 #define VMalignWordUp(val) (((uintptr_t)(val) + 3) & ~3) | |
398 | |
399 // Decache the interpreter state that interpreter modifies directly (i.e. GC is indirect mod) | |
400 #define DECACHE_STATE() DECACHE_PC(); DECACHE_TOS(); | |
401 | |
402 // Reload interpreter state after calling the VM or a possible GC | |
403 #define CACHE_STATE() \ | |
404 CACHE_TOS(); \ | |
405 CACHE_PC(); \ | |
406 CACHE_CP(); \ | |
407 CACHE_LOCALS(); | |
408 | |
409 // Call the VM don't check for pending exceptions | |
410 #define CALL_VM_NOCHECK(func) \ | |
411 DECACHE_STATE(); \ | |
412 SET_LAST_JAVA_FRAME(); \ | |
413 func; \ | |
414 RESET_LAST_JAVA_FRAME(); \ | |
415 CACHE_STATE(); \ | |
416 if (THREAD->pop_frame_pending() && \ | |
417 !THREAD->pop_frame_in_process()) { \ | |
418 goto handle_Pop_Frame; \ | |
419 } | |
420 | |
421 // Call the VM and check for pending exceptions | |
422 #define CALL_VM(func, label) { \ | |
423 CALL_VM_NOCHECK(func); \ | |
424 if (THREAD->has_pending_exception()) goto label; \ | |
425 } | |
426 | |
427 /* | |
428 * BytecodeInterpreter::run(interpreterState istate) | |
429 * BytecodeInterpreter::runWithChecks(interpreterState istate) | |
430 * | |
431 * The real deal. This is where byte codes actually get interpreted. | |
432 * Basically it's a big while loop that iterates until we return from | |
433 * the method passed in. | |
434 * | |
435 * The runWithChecks is used if JVMTI is enabled. | |
436 * | |
437 */ | |
438 #if defined(VM_JVMTI) | |
439 void | |
440 BytecodeInterpreter::runWithChecks(interpreterState istate) { | |
441 #else | |
442 void | |
443 BytecodeInterpreter::run(interpreterState istate) { | |
444 #endif | |
445 | |
446 // In order to simplify some tests based on switches set at runtime | |
447 // we invoke the interpreter a single time after switches are enabled | |
448 // and set simpler to to test variables rather than method calls or complex | |
449 // boolean expressions. | |
450 | |
451 static int initialized = 0; | |
452 static int checkit = 0; | |
453 static intptr_t* c_addr = NULL; | |
454 static intptr_t c_value; | |
455 | |
456 if (checkit && *c_addr != c_value) { | |
457 os::breakpoint(); | |
458 } | |
459 #ifdef VM_JVMTI | |
460 static bool _jvmti_interp_events = 0; | |
461 #endif | |
462 | |
463 static int _compiling; // (UseCompiler || CountCompiledCalls) | |
464 | |
465 #ifdef ASSERT | |
466 if (istate->_msg != initialize) { | |
467 assert(abs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit"); | |
1729 | 468 #ifndef SHARK |
469 IA32_ONLY(assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1, "wrong")); | |
470 #endif // !SHARK | |
0 | 471 } |
472 // Verify linkages. | |
473 interpreterState l = istate; | |
474 do { | |
475 assert(l == l->_self_link, "bad link"); | |
476 l = l->_prev_link; | |
477 } while (l != NULL); | |
478 // Screwups with stack management usually cause us to overwrite istate | |
479 // save a copy so we can verify it. | |
480 interpreterState orig = istate; | |
481 #endif | |
482 | |
483 static volatile jbyte* _byte_map_base; // adjusted card table base for oop store barrier | |
484 | |
485 register intptr_t* topOfStack = (intptr_t *)istate->stack(); /* access with STACK macros */ | |
486 register address pc = istate->bcp(); | |
487 register jubyte opcode; | |
488 register intptr_t* locals = istate->locals(); | |
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489 register ConstantPoolCache* cp = istate->constants(); // method()->constants()->cache() |
0 | 490 #ifdef LOTS_OF_REGS |
491 register JavaThread* THREAD = istate->thread(); | |
492 register volatile jbyte* BYTE_MAP_BASE = _byte_map_base; | |
493 #else | |
494 #undef THREAD | |
495 #define THREAD istate->thread() | |
496 #undef BYTE_MAP_BASE | |
497 #define BYTE_MAP_BASE _byte_map_base | |
498 #endif | |
499 | |
500 #ifdef USELABELS | |
501 const static void* const opclabels_data[256] = { | |
502 /* 0x00 */ &&opc_nop, &&opc_aconst_null,&&opc_iconst_m1,&&opc_iconst_0, | |
503 /* 0x04 */ &&opc_iconst_1,&&opc_iconst_2, &&opc_iconst_3, &&opc_iconst_4, | |
504 /* 0x08 */ &&opc_iconst_5,&&opc_lconst_0, &&opc_lconst_1, &&opc_fconst_0, | |
505 /* 0x0C */ &&opc_fconst_1,&&opc_fconst_2, &&opc_dconst_0, &&opc_dconst_1, | |
506 | |
507 /* 0x10 */ &&opc_bipush, &&opc_sipush, &&opc_ldc, &&opc_ldc_w, | |
508 /* 0x14 */ &&opc_ldc2_w, &&opc_iload, &&opc_lload, &&opc_fload, | |
509 /* 0x18 */ &&opc_dload, &&opc_aload, &&opc_iload_0,&&opc_iload_1, | |
510 /* 0x1C */ &&opc_iload_2,&&opc_iload_3,&&opc_lload_0,&&opc_lload_1, | |
511 | |
512 /* 0x20 */ &&opc_lload_2,&&opc_lload_3,&&opc_fload_0,&&opc_fload_1, | |
513 /* 0x24 */ &&opc_fload_2,&&opc_fload_3,&&opc_dload_0,&&opc_dload_1, | |
514 /* 0x28 */ &&opc_dload_2,&&opc_dload_3,&&opc_aload_0,&&opc_aload_1, | |
515 /* 0x2C */ &&opc_aload_2,&&opc_aload_3,&&opc_iaload, &&opc_laload, | |
516 | |
517 /* 0x30 */ &&opc_faload, &&opc_daload, &&opc_aaload, &&opc_baload, | |
518 /* 0x34 */ &&opc_caload, &&opc_saload, &&opc_istore, &&opc_lstore, | |
519 /* 0x38 */ &&opc_fstore, &&opc_dstore, &&opc_astore, &&opc_istore_0, | |
520 /* 0x3C */ &&opc_istore_1,&&opc_istore_2,&&opc_istore_3,&&opc_lstore_0, | |
521 | |
522 /* 0x40 */ &&opc_lstore_1,&&opc_lstore_2,&&opc_lstore_3,&&opc_fstore_0, | |
523 /* 0x44 */ &&opc_fstore_1,&&opc_fstore_2,&&opc_fstore_3,&&opc_dstore_0, | |
524 /* 0x48 */ &&opc_dstore_1,&&opc_dstore_2,&&opc_dstore_3,&&opc_astore_0, | |
525 /* 0x4C */ &&opc_astore_1,&&opc_astore_2,&&opc_astore_3,&&opc_iastore, | |
526 | |
527 /* 0x50 */ &&opc_lastore,&&opc_fastore,&&opc_dastore,&&opc_aastore, | |
528 /* 0x54 */ &&opc_bastore,&&opc_castore,&&opc_sastore,&&opc_pop, | |
529 /* 0x58 */ &&opc_pop2, &&opc_dup, &&opc_dup_x1, &&opc_dup_x2, | |
530 /* 0x5C */ &&opc_dup2, &&opc_dup2_x1,&&opc_dup2_x2,&&opc_swap, | |
531 | |
532 /* 0x60 */ &&opc_iadd,&&opc_ladd,&&opc_fadd,&&opc_dadd, | |
533 /* 0x64 */ &&opc_isub,&&opc_lsub,&&opc_fsub,&&opc_dsub, | |
534 /* 0x68 */ &&opc_imul,&&opc_lmul,&&opc_fmul,&&opc_dmul, | |
535 /* 0x6C */ &&opc_idiv,&&opc_ldiv,&&opc_fdiv,&&opc_ddiv, | |
536 | |
537 /* 0x70 */ &&opc_irem, &&opc_lrem, &&opc_frem,&&opc_drem, | |
538 /* 0x74 */ &&opc_ineg, &&opc_lneg, &&opc_fneg,&&opc_dneg, | |
539 /* 0x78 */ &&opc_ishl, &&opc_lshl, &&opc_ishr,&&opc_lshr, | |
540 /* 0x7C */ &&opc_iushr,&&opc_lushr,&&opc_iand,&&opc_land, | |
541 | |
542 /* 0x80 */ &&opc_ior, &&opc_lor,&&opc_ixor,&&opc_lxor, | |
543 /* 0x84 */ &&opc_iinc,&&opc_i2l,&&opc_i2f, &&opc_i2d, | |
544 /* 0x88 */ &&opc_l2i, &&opc_l2f,&&opc_l2d, &&opc_f2i, | |
545 /* 0x8C */ &&opc_f2l, &&opc_f2d,&&opc_d2i, &&opc_d2l, | |
546 | |
547 /* 0x90 */ &&opc_d2f, &&opc_i2b, &&opc_i2c, &&opc_i2s, | |
548 /* 0x94 */ &&opc_lcmp, &&opc_fcmpl,&&opc_fcmpg,&&opc_dcmpl, | |
549 /* 0x98 */ &&opc_dcmpg,&&opc_ifeq, &&opc_ifne, &&opc_iflt, | |
550 /* 0x9C */ &&opc_ifge, &&opc_ifgt, &&opc_ifle, &&opc_if_icmpeq, | |
551 | |
552 /* 0xA0 */ &&opc_if_icmpne,&&opc_if_icmplt,&&opc_if_icmpge, &&opc_if_icmpgt, | |
553 /* 0xA4 */ &&opc_if_icmple,&&opc_if_acmpeq,&&opc_if_acmpne, &&opc_goto, | |
554 /* 0xA8 */ &&opc_jsr, &&opc_ret, &&opc_tableswitch,&&opc_lookupswitch, | |
555 /* 0xAC */ &&opc_ireturn, &&opc_lreturn, &&opc_freturn, &&opc_dreturn, | |
556 | |
557 /* 0xB0 */ &&opc_areturn, &&opc_return, &&opc_getstatic, &&opc_putstatic, | |
558 /* 0xB4 */ &&opc_getfield, &&opc_putfield, &&opc_invokevirtual,&&opc_invokespecial, | |
2480 | 559 /* 0xB8 */ &&opc_invokestatic,&&opc_invokeinterface,&&opc_invokedynamic,&&opc_new, |
0 | 560 /* 0xBC */ &&opc_newarray, &&opc_anewarray, &&opc_arraylength, &&opc_athrow, |
561 | |
562 /* 0xC0 */ &&opc_checkcast, &&opc_instanceof, &&opc_monitorenter, &&opc_monitorexit, | |
563 /* 0xC4 */ &&opc_wide, &&opc_multianewarray, &&opc_ifnull, &&opc_ifnonnull, | |
123 | 564 /* 0xC8 */ &&opc_goto_w, &&opc_jsr_w, &&opc_breakpoint, &&opc_default, |
565 /* 0xCC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
566 | |
567 /* 0xD0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
0 | 568 /* 0xD4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
569 /* 0xD8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
570 /* 0xDC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
571 | |
572 /* 0xE0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
2480 | 573 /* 0xE4 */ &&opc_default, &&opc_fast_aldc, &&opc_fast_aldc_w, &&opc_return_register_finalizer, |
6926 | 574 /* 0xE8 */ &&opc_invokehandle,&&opc_default, &&opc_default, &&opc_default, |
0 | 575 /* 0xEC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
576 | |
577 /* 0xF0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
578 /* 0xF4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
579 /* 0xF8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
580 /* 0xFC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default | |
581 }; | |
582 register uintptr_t *dispatch_table = (uintptr_t*)&opclabels_data[0]; | |
583 #endif /* USELABELS */ | |
584 | |
585 #ifdef ASSERT | |
586 // this will trigger a VERIFY_OOP on entry | |
587 if (istate->msg() != initialize && ! METHOD->is_static()) { | |
588 oop rcvr = LOCALS_OBJECT(0); | |
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589 VERIFY_OOP(rcvr); |
0 | 590 } |
591 #endif | |
592 // #define HACK | |
593 #ifdef HACK | |
594 bool interesting = false; | |
595 #endif // HACK | |
596 | |
597 /* QQQ this should be a stack method so we don't know actual direction */ | |
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598 guarantee(istate->msg() == initialize || |
0 | 599 topOfStack >= istate->stack_limit() && |
600 topOfStack < istate->stack_base(), | |
601 "Stack top out of range"); | |
602 | |
603 switch (istate->msg()) { | |
604 case initialize: { | |
605 if (initialized++) ShouldNotReachHere(); // Only one initialize call | |
606 _compiling = (UseCompiler || CountCompiledCalls); | |
607 #ifdef VM_JVMTI | |
608 _jvmti_interp_events = JvmtiExport::can_post_interpreter_events(); | |
609 #endif | |
610 BarrierSet* bs = Universe::heap()->barrier_set(); | |
611 assert(bs->kind() == BarrierSet::CardTableModRef, "Wrong barrier set kind"); | |
612 _byte_map_base = (volatile jbyte*)(((CardTableModRefBS*)bs)->byte_map_base); | |
613 return; | |
614 } | |
615 break; | |
616 case method_entry: { | |
617 THREAD->set_do_not_unlock(); | |
618 // count invocations | |
619 assert(initialized, "Interpreter not initialized"); | |
620 if (_compiling) { | |
621 if (ProfileInterpreter) { | |
622 METHOD->increment_interpreter_invocation_count(); | |
623 } | |
624 INCR_INVOCATION_COUNT; | |
625 if (INVOCATION_COUNT->reached_InvocationLimit()) { | |
626 CALL_VM((void)InterpreterRuntime::frequency_counter_overflow(THREAD, NULL), handle_exception); | |
627 | |
628 // We no longer retry on a counter overflow | |
629 | |
630 // istate->set_msg(retry_method); | |
631 // THREAD->clr_do_not_unlock(); | |
632 // return; | |
633 } | |
634 SAFEPOINT; | |
635 } | |
636 | |
637 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
638 // initialize | |
639 os::breakpoint(); | |
640 } | |
641 | |
642 #ifdef HACK | |
643 { | |
644 ResourceMark rm; | |
645 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
646 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
647 tty->print_cr("entering: depth %d bci: %d", | |
648 (istate->_stack_base - istate->_stack), | |
649 istate->_bcp - istate->_method->code_base()); | |
650 interesting = true; | |
651 } | |
652 } | |
653 #endif // HACK | |
654 | |
655 | |
656 // lock method if synchronized | |
657 if (METHOD->is_synchronized()) { | |
658 // oop rcvr = locals[0].j.r; | |
659 oop rcvr; | |
660 if (METHOD->is_static()) { | |
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661 rcvr = METHOD->constants()->pool_holder()->java_mirror(); |
0 | 662 } else { |
663 rcvr = LOCALS_OBJECT(0); | |
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664 VERIFY_OOP(rcvr); |
0 | 665 } |
666 // The initial monitor is ours for the taking | |
667 BasicObjectLock* mon = &istate->monitor_base()[-1]; | |
668 oop monobj = mon->obj(); | |
669 assert(mon->obj() == rcvr, "method monitor mis-initialized"); | |
670 | |
671 bool success = UseBiasedLocking; | |
672 if (UseBiasedLocking) { | |
673 markOop mark = rcvr->mark(); | |
674 if (mark->has_bias_pattern()) { | |
675 // The bias pattern is present in the object's header. Need to check | |
676 // whether the bias owner and the epoch are both still current. | |
677 intptr_t xx = ((intptr_t) THREAD) ^ (intptr_t) mark; | |
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678 xx = (intptr_t) rcvr->klass()->prototype_header() ^ xx; |
0 | 679 intptr_t yy = (xx & ~((int) markOopDesc::age_mask_in_place)); |
680 if (yy != 0 ) { | |
681 // At this point we know that the header has the bias pattern and | |
682 // that we are not the bias owner in the current epoch. We need to | |
683 // figure out more details about the state of the header in order to | |
684 // know what operations can be legally performed on the object's | |
685 // header. | |
686 | |
687 // If the low three bits in the xor result aren't clear, that means | |
688 // the prototype header is no longer biased and we have to revoke | |
689 // the bias on this object. | |
690 | |
691 if (yy & markOopDesc::biased_lock_mask_in_place == 0 ) { | |
692 // Biasing is still enabled for this data type. See whether the | |
693 // epoch of the current bias is still valid, meaning that the epoch | |
694 // bits of the mark word are equal to the epoch bits of the | |
695 // prototype header. (Note that the prototype header's epoch bits | |
696 // only change at a safepoint.) If not, attempt to rebias the object | |
697 // toward the current thread. Note that we must be absolutely sure | |
698 // that the current epoch is invalid in order to do this because | |
699 // otherwise the manipulations it performs on the mark word are | |
700 // illegal. | |
701 if (yy & markOopDesc::epoch_mask_in_place == 0) { | |
702 // The epoch of the current bias is still valid but we know nothing | |
703 // about the owner; it might be set or it might be clear. Try to | |
704 // acquire the bias of the object using an atomic operation. If this | |
705 // fails we will go in to the runtime to revoke the object's bias. | |
706 // Note that we first construct the presumed unbiased header so we | |
707 // don't accidentally blow away another thread's valid bias. | |
708 intptr_t unbiased = (intptr_t) mark & (markOopDesc::biased_lock_mask_in_place | | |
709 markOopDesc::age_mask_in_place | | |
710 markOopDesc::epoch_mask_in_place); | |
711 if (Atomic::cmpxchg_ptr((intptr_t)THREAD | unbiased, (intptr_t*) rcvr->mark_addr(), unbiased) != unbiased) { | |
712 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); | |
713 } | |
714 } else { | |
715 try_rebias: | |
716 // At this point we know the epoch has expired, meaning that the | |
717 // current "bias owner", if any, is actually invalid. Under these | |
718 // circumstances _only_, we are allowed to use the current header's | |
719 // value as the comparison value when doing the cas to acquire the | |
720 // bias in the current epoch. In other words, we allow transfer of | |
721 // the bias from one thread to another directly in this situation. | |
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722 xx = (intptr_t) rcvr->klass()->prototype_header() | (intptr_t) THREAD; |
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723 if (Atomic::cmpxchg_ptr((intptr_t)THREAD | (intptr_t) rcvr->klass()->prototype_header(), |
0 | 724 (intptr_t*) rcvr->mark_addr(), |
725 (intptr_t) mark) != (intptr_t) mark) { | |
726 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); | |
727 } | |
728 } | |
729 } else { | |
730 try_revoke_bias: | |
731 // The prototype mark in the klass doesn't have the bias bit set any | |
732 // more, indicating that objects of this data type are not supposed | |
733 // to be biased any more. We are going to try to reset the mark of | |
734 // this object to the prototype value and fall through to the | |
735 // CAS-based locking scheme. Note that if our CAS fails, it means | |
736 // that another thread raced us for the privilege of revoking the | |
737 // bias of this particular object, so it's okay to continue in the | |
738 // normal locking code. | |
739 // | |
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740 xx = (intptr_t) rcvr->klass()->prototype_header() | (intptr_t) THREAD; |
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741 if (Atomic::cmpxchg_ptr(rcvr->klass()->prototype_header(), |
0 | 742 (intptr_t*) rcvr->mark_addr(), |
743 mark) == mark) { | |
744 // (*counters->revoked_lock_entry_count_addr())++; | |
745 success = false; | |
746 } | |
747 } | |
748 } | |
749 } else { | |
750 cas_label: | |
751 success = false; | |
752 } | |
753 } | |
754 if (!success) { | |
755 markOop displaced = rcvr->mark()->set_unlocked(); | |
756 mon->lock()->set_displaced_header(displaced); | |
757 if (Atomic::cmpxchg_ptr(mon, rcvr->mark_addr(), displaced) != displaced) { | |
758 // Is it simple recursive case? | |
759 if (THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { | |
760 mon->lock()->set_displaced_header(NULL); | |
761 } else { | |
762 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); | |
763 } | |
764 } | |
765 } | |
766 } | |
767 THREAD->clr_do_not_unlock(); | |
768 | |
769 // Notify jvmti | |
770 #ifdef VM_JVMTI | |
771 if (_jvmti_interp_events) { | |
772 // Whenever JVMTI puts a thread in interp_only_mode, method | |
773 // entry/exit events are sent for that thread to track stack depth. | |
774 if (THREAD->is_interp_only_mode()) { | |
775 CALL_VM(InterpreterRuntime::post_method_entry(THREAD), | |
776 handle_exception); | |
777 } | |
778 } | |
779 #endif /* VM_JVMTI */ | |
780 | |
781 goto run; | |
782 } | |
783 | |
784 case popping_frame: { | |
785 // returned from a java call to pop the frame, restart the call | |
786 // clear the message so we don't confuse ourselves later | |
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787 ShouldNotReachHere(); // we don't return this. |
0 | 788 assert(THREAD->pop_frame_in_process(), "wrong frame pop state"); |
789 istate->set_msg(no_request); | |
790 THREAD->clr_pop_frame_in_process(); | |
791 goto run; | |
792 } | |
793 | |
794 case method_resume: { | |
795 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
796 // resume | |
797 os::breakpoint(); | |
798 } | |
799 #ifdef HACK | |
800 { | |
801 ResourceMark rm; | |
802 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
803 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
804 tty->print_cr("resume: depth %d bci: %d", | |
805 (istate->_stack_base - istate->_stack) , | |
806 istate->_bcp - istate->_method->code_base()); | |
807 interesting = true; | |
808 } | |
809 } | |
810 #endif // HACK | |
811 // returned from a java call, continue executing. | |
812 if (THREAD->pop_frame_pending() && !THREAD->pop_frame_in_process()) { | |
813 goto handle_Pop_Frame; | |
814 } | |
815 | |
816 if (THREAD->has_pending_exception()) goto handle_exception; | |
817 // Update the pc by the saved amount of the invoke bytecode size | |
818 UPDATE_PC(istate->bcp_advance()); | |
819 goto run; | |
820 } | |
821 | |
822 case deopt_resume2: { | |
823 // Returned from an opcode that will reexecute. Deopt was | |
824 // a result of a PopFrame request. | |
825 // | |
826 goto run; | |
827 } | |
828 | |
829 case deopt_resume: { | |
830 // Returned from an opcode that has completed. The stack has | |
831 // the result all we need to do is skip across the bytecode | |
832 // and continue (assuming there is no exception pending) | |
833 // | |
834 // compute continuation length | |
835 // | |
836 // Note: it is possible to deopt at a return_register_finalizer opcode | |
837 // because this requires entering the vm to do the registering. While the | |
838 // opcode is complete we can't advance because there are no more opcodes | |
839 // much like trying to deopt at a poll return. In that has we simply | |
840 // get out of here | |
841 // | |
2142 | 842 if ( Bytecodes::code_at(METHOD, pc) == Bytecodes::_return_register_finalizer) { |
0 | 843 // this will do the right thing even if an exception is pending. |
844 goto handle_return; | |
845 } | |
2142 | 846 UPDATE_PC(Bytecodes::length_at(METHOD, pc)); |
0 | 847 if (THREAD->has_pending_exception()) goto handle_exception; |
848 goto run; | |
849 } | |
850 case got_monitors: { | |
851 // continue locking now that we have a monitor to use | |
852 // we expect to find newly allocated monitor at the "top" of the monitor stack. | |
853 oop lockee = STACK_OBJECT(-1); | |
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854 VERIFY_OOP(lockee); |
0 | 855 // derefing's lockee ought to provoke implicit null check |
856 // find a free monitor | |
857 BasicObjectLock* entry = (BasicObjectLock*) istate->stack_base(); | |
858 assert(entry->obj() == NULL, "Frame manager didn't allocate the monitor"); | |
859 entry->set_obj(lockee); | |
860 | |
861 markOop displaced = lockee->mark()->set_unlocked(); | |
862 entry->lock()->set_displaced_header(displaced); | |
863 if (Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { | |
864 // Is it simple recursive case? | |
865 if (THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { | |
866 entry->lock()->set_displaced_header(NULL); | |
867 } else { | |
868 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); | |
869 } | |
870 } | |
871 UPDATE_PC_AND_TOS(1, -1); | |
872 goto run; | |
873 } | |
874 default: { | |
875 fatal("Unexpected message from frame manager"); | |
876 } | |
877 } | |
878 | |
879 run: | |
880 | |
881 DO_UPDATE_INSTRUCTION_COUNT(*pc) | |
882 DEBUGGER_SINGLE_STEP_NOTIFY(); | |
883 #ifdef PREFETCH_OPCCODE | |
884 opcode = *pc; /* prefetch first opcode */ | |
885 #endif | |
886 | |
887 #ifndef USELABELS | |
888 while (1) | |
889 #endif | |
890 { | |
891 #ifndef PREFETCH_OPCCODE | |
892 opcode = *pc; | |
893 #endif | |
894 // Seems like this happens twice per opcode. At worst this is only | |
895 // need at entry to the loop. | |
896 // DEBUGGER_SINGLE_STEP_NOTIFY(); | |
897 /* Using this labels avoids double breakpoints when quickening and | |
898 * when returing from transition frames. | |
899 */ | |
900 opcode_switch: | |
901 assert(istate == orig, "Corrupted istate"); | |
902 /* QQQ Hmm this has knowledge of direction, ought to be a stack method */ | |
903 assert(topOfStack >= istate->stack_limit(), "Stack overrun"); | |
904 assert(topOfStack < istate->stack_base(), "Stack underrun"); | |
905 | |
906 #ifdef USELABELS | |
907 DISPATCH(opcode); | |
908 #else | |
909 switch (opcode) | |
910 #endif | |
911 { | |
912 CASE(_nop): | |
913 UPDATE_PC_AND_CONTINUE(1); | |
914 | |
915 /* Push miscellaneous constants onto the stack. */ | |
916 | |
917 CASE(_aconst_null): | |
918 SET_STACK_OBJECT(NULL, 0); | |
919 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
920 | |
921 #undef OPC_CONST_n | |
922 #define OPC_CONST_n(opcode, const_type, value) \ | |
923 CASE(opcode): \ | |
924 SET_STACK_ ## const_type(value, 0); \ | |
925 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
926 | |
927 OPC_CONST_n(_iconst_m1, INT, -1); | |
928 OPC_CONST_n(_iconst_0, INT, 0); | |
929 OPC_CONST_n(_iconst_1, INT, 1); | |
930 OPC_CONST_n(_iconst_2, INT, 2); | |
931 OPC_CONST_n(_iconst_3, INT, 3); | |
932 OPC_CONST_n(_iconst_4, INT, 4); | |
933 OPC_CONST_n(_iconst_5, INT, 5); | |
934 OPC_CONST_n(_fconst_0, FLOAT, 0.0); | |
935 OPC_CONST_n(_fconst_1, FLOAT, 1.0); | |
936 OPC_CONST_n(_fconst_2, FLOAT, 2.0); | |
937 | |
938 #undef OPC_CONST2_n | |
939 #define OPC_CONST2_n(opcname, value, key, kind) \ | |
940 CASE(_##opcname): \ | |
941 { \ | |
942 SET_STACK_ ## kind(VM##key##Const##value(), 1); \ | |
943 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
944 } | |
945 OPC_CONST2_n(dconst_0, Zero, double, DOUBLE); | |
946 OPC_CONST2_n(dconst_1, One, double, DOUBLE); | |
947 OPC_CONST2_n(lconst_0, Zero, long, LONG); | |
948 OPC_CONST2_n(lconst_1, One, long, LONG); | |
949 | |
950 /* Load constant from constant pool: */ | |
951 | |
952 /* Push a 1-byte signed integer value onto the stack. */ | |
953 CASE(_bipush): | |
954 SET_STACK_INT((jbyte)(pc[1]), 0); | |
955 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
956 | |
957 /* Push a 2-byte signed integer constant onto the stack. */ | |
958 CASE(_sipush): | |
959 SET_STACK_INT((int16_t)Bytes::get_Java_u2(pc + 1), 0); | |
960 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
961 | |
962 /* load from local variable */ | |
963 | |
964 CASE(_aload): | |
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965 VERIFY_OOP(LOCALS_OBJECT(pc[1])); |
0 | 966 SET_STACK_OBJECT(LOCALS_OBJECT(pc[1]), 0); |
967 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
968 | |
969 CASE(_iload): | |
970 CASE(_fload): | |
971 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0); | |
972 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
973 | |
974 CASE(_lload): | |
975 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(pc[1]), 1); | |
976 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
977 | |
978 CASE(_dload): | |
979 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(pc[1]), 1); | |
980 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
981 | |
982 #undef OPC_LOAD_n | |
983 #define OPC_LOAD_n(num) \ | |
984 CASE(_aload_##num): \ | |
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985 VERIFY_OOP(LOCALS_OBJECT(num)); \ |
0 | 986 SET_STACK_OBJECT(LOCALS_OBJECT(num), 0); \ |
987 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
988 \ | |
989 CASE(_iload_##num): \ | |
990 CASE(_fload_##num): \ | |
991 SET_STACK_SLOT(LOCALS_SLOT(num), 0); \ | |
992 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
993 \ | |
994 CASE(_lload_##num): \ | |
995 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(num), 1); \ | |
996 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
997 CASE(_dload_##num): \ | |
998 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(num), 1); \ | |
999 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1000 | |
1001 OPC_LOAD_n(0); | |
1002 OPC_LOAD_n(1); | |
1003 OPC_LOAD_n(2); | |
1004 OPC_LOAD_n(3); | |
1005 | |
1006 /* store to a local variable */ | |
1007 | |
1008 CASE(_astore): | |
1009 astore(topOfStack, -1, locals, pc[1]); | |
1010 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
1011 | |
1012 CASE(_istore): | |
1013 CASE(_fstore): | |
1014 SET_LOCALS_SLOT(STACK_SLOT(-1), pc[1]); | |
1015 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
1016 | |
1017 CASE(_lstore): | |
1018 SET_LOCALS_LONG(STACK_LONG(-1), pc[1]); | |
1019 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
1020 | |
1021 CASE(_dstore): | |
1022 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), pc[1]); | |
1023 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
1024 | |
1025 CASE(_wide): { | |
1026 uint16_t reg = Bytes::get_Java_u2(pc + 2); | |
1027 | |
1028 opcode = pc[1]; | |
1029 switch(opcode) { | |
1030 case Bytecodes::_aload: | |
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1031 VERIFY_OOP(LOCALS_OBJECT(reg)); |
0 | 1032 SET_STACK_OBJECT(LOCALS_OBJECT(reg), 0); |
1033 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
1034 | |
1035 case Bytecodes::_iload: | |
1036 case Bytecodes::_fload: | |
1037 SET_STACK_SLOT(LOCALS_SLOT(reg), 0); | |
1038 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
1039 | |
1040 case Bytecodes::_lload: | |
1041 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
1042 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
1043 | |
1044 case Bytecodes::_dload: | |
1045 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
1046 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
1047 | |
1048 case Bytecodes::_astore: | |
1049 astore(topOfStack, -1, locals, reg); | |
1050 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
1051 | |
1052 case Bytecodes::_istore: | |
1053 case Bytecodes::_fstore: | |
1054 SET_LOCALS_SLOT(STACK_SLOT(-1), reg); | |
1055 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
1056 | |
1057 case Bytecodes::_lstore: | |
1058 SET_LOCALS_LONG(STACK_LONG(-1), reg); | |
1059 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
1060 | |
1061 case Bytecodes::_dstore: | |
1062 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), reg); | |
1063 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
1064 | |
1065 case Bytecodes::_iinc: { | |
1066 int16_t offset = (int16_t)Bytes::get_Java_u2(pc+4); | |
1067 // Be nice to see what this generates.... QQQ | |
1068 SET_LOCALS_INT(LOCALS_INT(reg) + offset, reg); | |
1069 UPDATE_PC_AND_CONTINUE(6); | |
1070 } | |
1071 case Bytecodes::_ret: | |
1072 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(reg)); | |
1073 UPDATE_PC_AND_CONTINUE(0); | |
1074 default: | |
1075 VM_JAVA_ERROR(vmSymbols::java_lang_InternalError(), "undefined opcode"); | |
1076 } | |
1077 } | |
1078 | |
1079 | |
1080 #undef OPC_STORE_n | |
1081 #define OPC_STORE_n(num) \ | |
1082 CASE(_astore_##num): \ | |
1083 astore(topOfStack, -1, locals, num); \ | |
1084 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1085 CASE(_istore_##num): \ | |
1086 CASE(_fstore_##num): \ | |
1087 SET_LOCALS_SLOT(STACK_SLOT(-1), num); \ | |
1088 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1089 | |
1090 OPC_STORE_n(0); | |
1091 OPC_STORE_n(1); | |
1092 OPC_STORE_n(2); | |
1093 OPC_STORE_n(3); | |
1094 | |
1095 #undef OPC_DSTORE_n | |
1096 #define OPC_DSTORE_n(num) \ | |
1097 CASE(_dstore_##num): \ | |
1098 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), num); \ | |
1099 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1100 CASE(_lstore_##num): \ | |
1101 SET_LOCALS_LONG(STACK_LONG(-1), num); \ | |
1102 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
1103 | |
1104 OPC_DSTORE_n(0); | |
1105 OPC_DSTORE_n(1); | |
1106 OPC_DSTORE_n(2); | |
1107 OPC_DSTORE_n(3); | |
1108 | |
1109 /* stack pop, dup, and insert opcodes */ | |
1110 | |
1111 | |
1112 CASE(_pop): /* Discard the top item on the stack */ | |
1113 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1114 | |
1115 | |
1116 CASE(_pop2): /* Discard the top 2 items on the stack */ | |
1117 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
1118 | |
1119 | |
1120 CASE(_dup): /* Duplicate the top item on the stack */ | |
1121 dup(topOfStack); | |
1122 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1123 | |
1124 CASE(_dup2): /* Duplicate the top 2 items on the stack */ | |
1125 dup2(topOfStack); | |
1126 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1127 | |
1128 CASE(_dup_x1): /* insert top word two down */ | |
1129 dup_x1(topOfStack); | |
1130 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1131 | |
1132 CASE(_dup_x2): /* insert top word three down */ | |
1133 dup_x2(topOfStack); | |
1134 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1135 | |
1136 CASE(_dup2_x1): /* insert top 2 slots three down */ | |
1137 dup2_x1(topOfStack); | |
1138 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1139 | |
1140 CASE(_dup2_x2): /* insert top 2 slots four down */ | |
1141 dup2_x2(topOfStack); | |
1142 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1143 | |
1144 CASE(_swap): { /* swap top two elements on the stack */ | |
1145 swap(topOfStack); | |
1146 UPDATE_PC_AND_CONTINUE(1); | |
1147 } | |
1148 | |
1149 /* Perform various binary integer operations */ | |
1150 | |
1151 #undef OPC_INT_BINARY | |
1152 #define OPC_INT_BINARY(opcname, opname, test) \ | |
1153 CASE(_i##opcname): \ | |
1154 if (test && (STACK_INT(-1) == 0)) { \ | |
1155 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
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1156 "/ by zero"); \ |
0 | 1157 } \ |
1158 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
1159 STACK_INT(-1)), \ | |
1160 -2); \ | |
1161 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1162 CASE(_l##opcname): \ | |
1163 { \ | |
1164 if (test) { \ | |
1165 jlong l1 = STACK_LONG(-1); \ | |
1166 if (VMlongEqz(l1)) { \ | |
1167 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
1168 "/ by long zero"); \ | |
1169 } \ | |
1170 } \ | |
1171 /* First long at (-1,-2) next long at (-3,-4) */ \ | |
1172 SET_STACK_LONG(VMlong##opname(STACK_LONG(-3), \ | |
1173 STACK_LONG(-1)), \ | |
1174 -3); \ | |
1175 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1176 } | |
1177 | |
1178 OPC_INT_BINARY(add, Add, 0); | |
1179 OPC_INT_BINARY(sub, Sub, 0); | |
1180 OPC_INT_BINARY(mul, Mul, 0); | |
1181 OPC_INT_BINARY(and, And, 0); | |
1182 OPC_INT_BINARY(or, Or, 0); | |
1183 OPC_INT_BINARY(xor, Xor, 0); | |
1184 OPC_INT_BINARY(div, Div, 1); | |
1185 OPC_INT_BINARY(rem, Rem, 1); | |
1186 | |
1187 | |
1188 /* Perform various binary floating number operations */ | |
1189 /* On some machine/platforms/compilers div zero check can be implicit */ | |
1190 | |
1191 #undef OPC_FLOAT_BINARY | |
1192 #define OPC_FLOAT_BINARY(opcname, opname) \ | |
1193 CASE(_d##opcname): { \ | |
1194 SET_STACK_DOUBLE(VMdouble##opname(STACK_DOUBLE(-3), \ | |
1195 STACK_DOUBLE(-1)), \ | |
1196 -3); \ | |
1197 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1198 } \ | |
1199 CASE(_f##opcname): \ | |
1200 SET_STACK_FLOAT(VMfloat##opname(STACK_FLOAT(-2), \ | |
1201 STACK_FLOAT(-1)), \ | |
1202 -2); \ | |
1203 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1204 | |
1205 | |
1206 OPC_FLOAT_BINARY(add, Add); | |
1207 OPC_FLOAT_BINARY(sub, Sub); | |
1208 OPC_FLOAT_BINARY(mul, Mul); | |
1209 OPC_FLOAT_BINARY(div, Div); | |
1210 OPC_FLOAT_BINARY(rem, Rem); | |
1211 | |
1212 /* Shift operations | |
1213 * Shift left int and long: ishl, lshl | |
1214 * Logical shift right int and long w/zero extension: iushr, lushr | |
1215 * Arithmetic shift right int and long w/sign extension: ishr, lshr | |
1216 */ | |
1217 | |
1218 #undef OPC_SHIFT_BINARY | |
1219 #define OPC_SHIFT_BINARY(opcname, opname) \ | |
1220 CASE(_i##opcname): \ | |
1221 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
1222 STACK_INT(-1)), \ | |
1223 -2); \ | |
1224 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1225 CASE(_l##opcname): \ | |
1226 { \ | |
1227 SET_STACK_LONG(VMlong##opname(STACK_LONG(-2), \ | |
1228 STACK_INT(-1)), \ | |
1229 -2); \ | |
1230 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1231 } | |
1232 | |
1233 OPC_SHIFT_BINARY(shl, Shl); | |
1234 OPC_SHIFT_BINARY(shr, Shr); | |
1235 OPC_SHIFT_BINARY(ushr, Ushr); | |
1236 | |
1237 /* Increment local variable by constant */ | |
1238 CASE(_iinc): | |
1239 { | |
1240 // locals[pc[1]].j.i += (jbyte)(pc[2]); | |
1241 SET_LOCALS_INT(LOCALS_INT(pc[1]) + (jbyte)(pc[2]), pc[1]); | |
1242 UPDATE_PC_AND_CONTINUE(3); | |
1243 } | |
1244 | |
1245 /* negate the value on the top of the stack */ | |
1246 | |
1247 CASE(_ineg): | |
1248 SET_STACK_INT(VMintNeg(STACK_INT(-1)), -1); | |
1249 UPDATE_PC_AND_CONTINUE(1); | |
1250 | |
1251 CASE(_fneg): | |
1252 SET_STACK_FLOAT(VMfloatNeg(STACK_FLOAT(-1)), -1); | |
1253 UPDATE_PC_AND_CONTINUE(1); | |
1254 | |
1255 CASE(_lneg): | |
1256 { | |
1257 SET_STACK_LONG(VMlongNeg(STACK_LONG(-1)), -1); | |
1258 UPDATE_PC_AND_CONTINUE(1); | |
1259 } | |
1260 | |
1261 CASE(_dneg): | |
1262 { | |
1263 SET_STACK_DOUBLE(VMdoubleNeg(STACK_DOUBLE(-1)), -1); | |
1264 UPDATE_PC_AND_CONTINUE(1); | |
1265 } | |
1266 | |
1267 /* Conversion operations */ | |
1268 | |
1269 CASE(_i2f): /* convert top of stack int to float */ | |
1270 SET_STACK_FLOAT(VMint2Float(STACK_INT(-1)), -1); | |
1271 UPDATE_PC_AND_CONTINUE(1); | |
1272 | |
1273 CASE(_i2l): /* convert top of stack int to long */ | |
1274 { | |
1275 // this is ugly QQQ | |
1276 jlong r = VMint2Long(STACK_INT(-1)); | |
1277 MORE_STACK(-1); // Pop | |
1278 SET_STACK_LONG(r, 1); | |
1279 | |
1280 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1281 } | |
1282 | |
1283 CASE(_i2d): /* convert top of stack int to double */ | |
1284 { | |
1285 // this is ugly QQQ (why cast to jlong?? ) | |
1286 jdouble r = (jlong)STACK_INT(-1); | |
1287 MORE_STACK(-1); // Pop | |
1288 SET_STACK_DOUBLE(r, 1); | |
1289 | |
1290 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1291 } | |
1292 | |
1293 CASE(_l2i): /* convert top of stack long to int */ | |
1294 { | |
1295 jint r = VMlong2Int(STACK_LONG(-1)); | |
1296 MORE_STACK(-2); // Pop | |
1297 SET_STACK_INT(r, 0); | |
1298 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1299 } | |
1300 | |
1301 CASE(_l2f): /* convert top of stack long to float */ | |
1302 { | |
1303 jlong r = STACK_LONG(-1); | |
1304 MORE_STACK(-2); // Pop | |
1305 SET_STACK_FLOAT(VMlong2Float(r), 0); | |
1306 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1307 } | |
1308 | |
1309 CASE(_l2d): /* convert top of stack long to double */ | |
1310 { | |
1311 jlong r = STACK_LONG(-1); | |
1312 MORE_STACK(-2); // Pop | |
1313 SET_STACK_DOUBLE(VMlong2Double(r), 1); | |
1314 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1315 } | |
1316 | |
1317 CASE(_f2i): /* Convert top of stack float to int */ | |
1318 SET_STACK_INT(SharedRuntime::f2i(STACK_FLOAT(-1)), -1); | |
1319 UPDATE_PC_AND_CONTINUE(1); | |
1320 | |
1321 CASE(_f2l): /* convert top of stack float to long */ | |
1322 { | |
1323 jlong r = SharedRuntime::f2l(STACK_FLOAT(-1)); | |
1324 MORE_STACK(-1); // POP | |
1325 SET_STACK_LONG(r, 1); | |
1326 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1327 } | |
1328 | |
1329 CASE(_f2d): /* convert top of stack float to double */ | |
1330 { | |
1331 jfloat f; | |
1332 jdouble r; | |
1333 f = STACK_FLOAT(-1); | |
1334 r = (jdouble) f; | |
1335 MORE_STACK(-1); // POP | |
1336 SET_STACK_DOUBLE(r, 1); | |
1337 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1338 } | |
1339 | |
1340 CASE(_d2i): /* convert top of stack double to int */ | |
1341 { | |
1342 jint r1 = SharedRuntime::d2i(STACK_DOUBLE(-1)); | |
1343 MORE_STACK(-2); | |
1344 SET_STACK_INT(r1, 0); | |
1345 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1346 } | |
1347 | |
1348 CASE(_d2f): /* convert top of stack double to float */ | |
1349 { | |
1350 jfloat r1 = VMdouble2Float(STACK_DOUBLE(-1)); | |
1351 MORE_STACK(-2); | |
1352 SET_STACK_FLOAT(r1, 0); | |
1353 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1354 } | |
1355 | |
1356 CASE(_d2l): /* convert top of stack double to long */ | |
1357 { | |
1358 jlong r1 = SharedRuntime::d2l(STACK_DOUBLE(-1)); | |
1359 MORE_STACK(-2); | |
1360 SET_STACK_LONG(r1, 1); | |
1361 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1362 } | |
1363 | |
1364 CASE(_i2b): | |
1365 SET_STACK_INT(VMint2Byte(STACK_INT(-1)), -1); | |
1366 UPDATE_PC_AND_CONTINUE(1); | |
1367 | |
1368 CASE(_i2c): | |
1369 SET_STACK_INT(VMint2Char(STACK_INT(-1)), -1); | |
1370 UPDATE_PC_AND_CONTINUE(1); | |
1371 | |
1372 CASE(_i2s): | |
1373 SET_STACK_INT(VMint2Short(STACK_INT(-1)), -1); | |
1374 UPDATE_PC_AND_CONTINUE(1); | |
1375 | |
1376 /* comparison operators */ | |
1377 | |
1378 | |
1379 #define COMPARISON_OP(name, comparison) \ | |
1380 CASE(_if_icmp##name): { \ | |
1381 int skip = (STACK_INT(-2) comparison STACK_INT(-1)) \ | |
1382 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1383 address branch_pc = pc; \ | |
1384 UPDATE_PC_AND_TOS(skip, -2); \ | |
1385 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1386 CONTINUE; \ | |
1387 } \ | |
1388 CASE(_if##name): { \ | |
1389 int skip = (STACK_INT(-1) comparison 0) \ | |
1390 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1391 address branch_pc = pc; \ | |
1392 UPDATE_PC_AND_TOS(skip, -1); \ | |
1393 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1394 CONTINUE; \ | |
1395 } | |
1396 | |
1397 #define COMPARISON_OP2(name, comparison) \ | |
1398 COMPARISON_OP(name, comparison) \ | |
1399 CASE(_if_acmp##name): { \ | |
1400 int skip = (STACK_OBJECT(-2) comparison STACK_OBJECT(-1)) \ | |
1401 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1402 address branch_pc = pc; \ | |
1403 UPDATE_PC_AND_TOS(skip, -2); \ | |
1404 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1405 CONTINUE; \ | |
1406 } | |
1407 | |
1408 #define NULL_COMPARISON_NOT_OP(name) \ | |
1409 CASE(_if##name): { \ | |
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1410 int skip = (!(STACK_OBJECT(-1) == NULL)) \ |
0 | 1411 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
1412 address branch_pc = pc; \ | |
1413 UPDATE_PC_AND_TOS(skip, -1); \ | |
1414 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1415 CONTINUE; \ | |
1416 } | |
1417 | |
1418 #define NULL_COMPARISON_OP(name) \ | |
1419 CASE(_if##name): { \ | |
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1420 int skip = ((STACK_OBJECT(-1) == NULL)) \ |
0 | 1421 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
1422 address branch_pc = pc; \ | |
1423 UPDATE_PC_AND_TOS(skip, -1); \ | |
1424 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1425 CONTINUE; \ | |
1426 } | |
1427 COMPARISON_OP(lt, <); | |
1428 COMPARISON_OP(gt, >); | |
1429 COMPARISON_OP(le, <=); | |
1430 COMPARISON_OP(ge, >=); | |
1431 COMPARISON_OP2(eq, ==); /* include ref comparison */ | |
1432 COMPARISON_OP2(ne, !=); /* include ref comparison */ | |
1433 NULL_COMPARISON_OP(null); | |
1434 NULL_COMPARISON_NOT_OP(nonnull); | |
1435 | |
1436 /* Goto pc at specified offset in switch table. */ | |
1437 | |
1438 CASE(_tableswitch): { | |
1439 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
1440 int32_t key = STACK_INT(-1); | |
1441 int32_t low = Bytes::get_Java_u4((address)&lpc[1]); | |
1442 int32_t high = Bytes::get_Java_u4((address)&lpc[2]); | |
1443 int32_t skip; | |
1444 key -= low; | |
1445 skip = ((uint32_t) key > (uint32_t)(high - low)) | |
1446 ? Bytes::get_Java_u4((address)&lpc[0]) | |
1447 : Bytes::get_Java_u4((address)&lpc[key + 3]); | |
1448 // Does this really need a full backedge check (osr?) | |
1449 address branch_pc = pc; | |
1450 UPDATE_PC_AND_TOS(skip, -1); | |
1451 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
1452 CONTINUE; | |
1453 } | |
1454 | |
1455 /* Goto pc whose table entry matches specified key */ | |
1456 | |
1457 CASE(_lookupswitch): { | |
1458 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
1459 int32_t key = STACK_INT(-1); | |
1460 int32_t skip = Bytes::get_Java_u4((address) lpc); /* default amount */ | |
1461 int32_t npairs = Bytes::get_Java_u4((address) &lpc[1]); | |
1462 while (--npairs >= 0) { | |
1463 lpc += 2; | |
1464 if (key == (int32_t)Bytes::get_Java_u4((address)lpc)) { | |
1465 skip = Bytes::get_Java_u4((address)&lpc[1]); | |
1466 break; | |
1467 } | |
1468 } | |
1469 address branch_pc = pc; | |
1470 UPDATE_PC_AND_TOS(skip, -1); | |
1471 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
1472 CONTINUE; | |
1473 } | |
1474 | |
1475 CASE(_fcmpl): | |
1476 CASE(_fcmpg): | |
1477 { | |
1478 SET_STACK_INT(VMfloatCompare(STACK_FLOAT(-2), | |
1479 STACK_FLOAT(-1), | |
1480 (opcode == Bytecodes::_fcmpl ? -1 : 1)), | |
1481 -2); | |
1482 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1483 } | |
1484 | |
1485 CASE(_dcmpl): | |
1486 CASE(_dcmpg): | |
1487 { | |
1488 int r = VMdoubleCompare(STACK_DOUBLE(-3), | |
1489 STACK_DOUBLE(-1), | |
1490 (opcode == Bytecodes::_dcmpl ? -1 : 1)); | |
1491 MORE_STACK(-4); // Pop | |
1492 SET_STACK_INT(r, 0); | |
1493 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1494 } | |
1495 | |
1496 CASE(_lcmp): | |
1497 { | |
1498 int r = VMlongCompare(STACK_LONG(-3), STACK_LONG(-1)); | |
1499 MORE_STACK(-4); | |
1500 SET_STACK_INT(r, 0); | |
1501 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1502 } | |
1503 | |
1504 | |
1505 /* Return from a method */ | |
1506 | |
1507 CASE(_areturn): | |
1508 CASE(_ireturn): | |
1509 CASE(_freturn): | |
1510 { | |
1511 // Allow a safepoint before returning to frame manager. | |
1512 SAFEPOINT; | |
1513 | |
1514 goto handle_return; | |
1515 } | |
1516 | |
1517 CASE(_lreturn): | |
1518 CASE(_dreturn): | |
1519 { | |
1520 // Allow a safepoint before returning to frame manager. | |
1521 SAFEPOINT; | |
1522 goto handle_return; | |
1523 } | |
1524 | |
1525 CASE(_return_register_finalizer): { | |
1526 | |
1527 oop rcvr = LOCALS_OBJECT(0); | |
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1528 VERIFY_OOP(rcvr); |
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1529 if (rcvr->klass()->has_finalizer()) { |
0 | 1530 CALL_VM(InterpreterRuntime::register_finalizer(THREAD, rcvr), handle_exception); |
1531 } | |
1532 goto handle_return; | |
1533 } | |
1534 CASE(_return): { | |
1535 | |
1536 // Allow a safepoint before returning to frame manager. | |
1537 SAFEPOINT; | |
1538 goto handle_return; | |
1539 } | |
1540 | |
1541 /* Array access byte-codes */ | |
1542 | |
1543 /* Every array access byte-code starts out like this */ | |
1544 // arrayOopDesc* arrObj = (arrayOopDesc*)STACK_OBJECT(arrayOff); | |
1545 #define ARRAY_INTRO(arrayOff) \ | |
1546 arrayOop arrObj = (arrayOop)STACK_OBJECT(arrayOff); \ | |
1547 jint index = STACK_INT(arrayOff + 1); \ | |
1548 char message[jintAsStringSize]; \ | |
1549 CHECK_NULL(arrObj); \ | |
1550 if ((uint32_t)index >= (uint32_t)arrObj->length()) { \ | |
1551 sprintf(message, "%d", index); \ | |
1552 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), \ | |
1553 message); \ | |
1554 } | |
1555 | |
1556 /* 32-bit loads. These handle conversion from < 32-bit types */ | |
1557 #define ARRAY_LOADTO32(T, T2, format, stackRes, extra) \ | |
1558 { \ | |
1559 ARRAY_INTRO(-2); \ | |
1560 extra; \ | |
1561 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), \ | |
1562 -2); \ | |
1563 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1564 } | |
1565 | |
1566 /* 64-bit loads */ | |
1567 #define ARRAY_LOADTO64(T,T2, stackRes, extra) \ | |
1568 { \ | |
1569 ARRAY_INTRO(-2); \ | |
1570 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), -1); \ | |
1571 extra; \ | |
1572 UPDATE_PC_AND_CONTINUE(1); \ | |
1573 } | |
1574 | |
1575 CASE(_iaload): | |
1576 ARRAY_LOADTO32(T_INT, jint, "%d", STACK_INT, 0); | |
1577 CASE(_faload): | |
1578 ARRAY_LOADTO32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
1579 CASE(_aaload): | |
1580 ARRAY_LOADTO32(T_OBJECT, oop, INTPTR_FORMAT, STACK_OBJECT, 0); | |
1581 CASE(_baload): | |
1582 ARRAY_LOADTO32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
1583 CASE(_caload): | |
1584 ARRAY_LOADTO32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
1585 CASE(_saload): | |
1586 ARRAY_LOADTO32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
1587 CASE(_laload): | |
1588 ARRAY_LOADTO64(T_LONG, jlong, STACK_LONG, 0); | |
1589 CASE(_daload): | |
1590 ARRAY_LOADTO64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
1591 | |
1592 /* 32-bit stores. These handle conversion to < 32-bit types */ | |
1593 #define ARRAY_STOREFROM32(T, T2, format, stackSrc, extra) \ | |
1594 { \ | |
1595 ARRAY_INTRO(-3); \ | |
1596 extra; \ | |
1597 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ | |
1598 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); \ | |
1599 } | |
1600 | |
1601 /* 64-bit stores */ | |
1602 #define ARRAY_STOREFROM64(T, T2, stackSrc, extra) \ | |
1603 { \ | |
1604 ARRAY_INTRO(-4); \ | |
1605 extra; \ | |
1606 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ | |
1607 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -4); \ | |
1608 } | |
1609 | |
1610 CASE(_iastore): | |
1611 ARRAY_STOREFROM32(T_INT, jint, "%d", STACK_INT, 0); | |
1612 CASE(_fastore): | |
1613 ARRAY_STOREFROM32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
1614 /* | |
1615 * This one looks different because of the assignability check | |
1616 */ | |
1617 CASE(_aastore): { | |
1618 oop rhsObject = STACK_OBJECT(-1); | |
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1619 VERIFY_OOP(rhsObject); |
0 | 1620 ARRAY_INTRO( -3); |
1621 // arrObj, index are set | |
1622 if (rhsObject != NULL) { | |
1623 /* Check assignability of rhsObject into arrObj */ | |
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1624 Klass* rhsKlassOop = rhsObject->klass(); // EBX (subclass) |
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1625 Klass* elemKlassOop = ObjArrayKlass::cast(arrObj->klass())->element_klass(); // superklass EAX |
0 | 1626 // |
1627 // Check for compatibilty. This check must not GC!! | |
1628 // Seems way more expensive now that we must dispatch | |
1629 // | |
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1630 if (rhsKlassOop != elemKlassOop && !rhsKlassOop->is_subtype_of(elemKlassOop)) { // ebx->is... |
0 | 1631 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayStoreException(), ""); |
1632 } | |
1633 } | |
1634 oop* elem_loc = (oop*)(((address) arrObj->base(T_OBJECT)) + index * sizeof(oop)); | |
1635 // *(oop*)(((address) arrObj->base(T_OBJECT)) + index * sizeof(oop)) = rhsObject; | |
1636 *elem_loc = rhsObject; | |
1637 // Mark the card | |
1638 OrderAccess::release_store(&BYTE_MAP_BASE[(uintptr_t)elem_loc >> CardTableModRefBS::card_shift], 0); | |
1639 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); | |
1640 } | |
1641 CASE(_bastore): | |
1642 ARRAY_STOREFROM32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
1643 CASE(_castore): | |
1644 ARRAY_STOREFROM32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
1645 CASE(_sastore): | |
1646 ARRAY_STOREFROM32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
1647 CASE(_lastore): | |
1648 ARRAY_STOREFROM64(T_LONG, jlong, STACK_LONG, 0); | |
1649 CASE(_dastore): | |
1650 ARRAY_STOREFROM64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
1651 | |
1652 CASE(_arraylength): | |
1653 { | |
1654 arrayOop ary = (arrayOop) STACK_OBJECT(-1); | |
1655 CHECK_NULL(ary); | |
1656 SET_STACK_INT(ary->length(), -1); | |
1657 UPDATE_PC_AND_CONTINUE(1); | |
1658 } | |
1659 | |
1660 /* monitorenter and monitorexit for locking/unlocking an object */ | |
1661 | |
1662 CASE(_monitorenter): { | |
1663 oop lockee = STACK_OBJECT(-1); | |
1664 // derefing's lockee ought to provoke implicit null check | |
1665 CHECK_NULL(lockee); | |
1666 // find a free monitor or one already allocated for this object | |
1667 // if we find a matching object then we need a new monitor | |
1668 // since this is recursive enter | |
1669 BasicObjectLock* limit = istate->monitor_base(); | |
1670 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
1671 BasicObjectLock* entry = NULL; | |
1672 while (most_recent != limit ) { | |
1673 if (most_recent->obj() == NULL) entry = most_recent; | |
1674 else if (most_recent->obj() == lockee) break; | |
1675 most_recent++; | |
1676 } | |
1677 if (entry != NULL) { | |
1678 entry->set_obj(lockee); | |
1679 markOop displaced = lockee->mark()->set_unlocked(); | |
1680 entry->lock()->set_displaced_header(displaced); | |
1681 if (Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { | |
1682 // Is it simple recursive case? | |
1683 if (THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { | |
1684 entry->lock()->set_displaced_header(NULL); | |
1685 } else { | |
1686 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); | |
1687 } | |
1688 } | |
1689 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1690 } else { | |
1691 istate->set_msg(more_monitors); | |
1692 UPDATE_PC_AND_RETURN(0); // Re-execute | |
1693 } | |
1694 } | |
1695 | |
1696 CASE(_monitorexit): { | |
1697 oop lockee = STACK_OBJECT(-1); | |
1698 CHECK_NULL(lockee); | |
1699 // derefing's lockee ought to provoke implicit null check | |
1700 // find our monitor slot | |
1701 BasicObjectLock* limit = istate->monitor_base(); | |
1702 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
1703 while (most_recent != limit ) { | |
1704 if ((most_recent)->obj() == lockee) { | |
1705 BasicLock* lock = most_recent->lock(); | |
1706 markOop header = lock->displaced_header(); | |
1707 most_recent->set_obj(NULL); | |
1708 // If it isn't recursive we either must swap old header or call the runtime | |
1709 if (header != NULL) { | |
1710 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { | |
1711 // restore object for the slow case | |
1712 most_recent->set_obj(lockee); | |
1713 CALL_VM(InterpreterRuntime::monitorexit(THREAD, most_recent), handle_exception); | |
1714 } | |
1715 } | |
1716 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1717 } | |
1718 most_recent++; | |
1719 } | |
1720 // Need to throw illegal monitor state exception | |
1721 CALL_VM(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD), handle_exception); | |
2480 | 1722 ShouldNotReachHere(); |
0 | 1723 } |
1724 | |
1725 /* All of the non-quick opcodes. */ | |
1726 | |
1727 /* -Set clobbersCpIndex true if the quickened opcode clobbers the | |
1728 * constant pool index in the instruction. | |
1729 */ | |
1730 CASE(_getfield): | |
1731 CASE(_getstatic): | |
1732 { | |
1733 u2 index; | |
1734 ConstantPoolCacheEntry* cache; | |
1735 index = Bytes::get_native_u2(pc+1); | |
1736 | |
1737 // QQQ Need to make this as inlined as possible. Probably need to | |
1738 // split all the bytecode cases out so c++ compiler has a chance | |
1739 // for constant prop to fold everything possible away. | |
1740 | |
1741 cache = cp->entry_at(index); | |
1742 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
1743 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
1744 handle_exception); | |
1745 cache = cp->entry_at(index); | |
1746 } | |
1747 | |
1748 #ifdef VM_JVMTI | |
1749 if (_jvmti_interp_events) { | |
1750 int *count_addr; | |
1751 oop obj; | |
1752 // Check to see if a field modification watch has been set | |
1753 // before we take the time to call into the VM. | |
1754 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
1755 if ( *count_addr > 0 ) { | |
1756 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
1757 obj = (oop)NULL; | |
1758 } else { | |
1759 obj = (oop) STACK_OBJECT(-1); | |
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1760 VERIFY_OOP(obj); |
0 | 1761 } |
1762 CALL_VM(InterpreterRuntime::post_field_access(THREAD, | |
1763 obj, | |
1764 cache), | |
1765 handle_exception); | |
1766 } | |
1767 } | |
1768 #endif /* VM_JVMTI */ | |
1769 | |
1770 oop obj; | |
1771 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
6926 | 1772 Klass* k = cache->f1_as_klass(); |
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1773 obj = k->java_mirror(); |
0 | 1774 MORE_STACK(1); // Assume single slot push |
1775 } else { | |
1776 obj = (oop) STACK_OBJECT(-1); | |
1777 CHECK_NULL(obj); | |
1778 } | |
1779 | |
1780 // | |
1781 // Now store the result on the stack | |
1782 // | |
1783 TosState tos_type = cache->flag_state(); | |
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1784 int field_offset = cache->f2_as_index(); |
0 | 1785 if (cache->is_volatile()) { |
1786 if (tos_type == atos) { | |
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1787 VERIFY_OOP(obj->obj_field_acquire(field_offset)); |
0 | 1788 SET_STACK_OBJECT(obj->obj_field_acquire(field_offset), -1); |
1789 } else if (tos_type == itos) { | |
1790 SET_STACK_INT(obj->int_field_acquire(field_offset), -1); | |
1791 } else if (tos_type == ltos) { | |
1792 SET_STACK_LONG(obj->long_field_acquire(field_offset), 0); | |
1793 MORE_STACK(1); | |
1794 } else if (tos_type == btos) { | |
1795 SET_STACK_INT(obj->byte_field_acquire(field_offset), -1); | |
1796 } else if (tos_type == ctos) { | |
1797 SET_STACK_INT(obj->char_field_acquire(field_offset), -1); | |
1798 } else if (tos_type == stos) { | |
1799 SET_STACK_INT(obj->short_field_acquire(field_offset), -1); | |
1800 } else if (tos_type == ftos) { | |
1801 SET_STACK_FLOAT(obj->float_field_acquire(field_offset), -1); | |
1802 } else { | |
1803 SET_STACK_DOUBLE(obj->double_field_acquire(field_offset), 0); | |
1804 MORE_STACK(1); | |
1805 } | |
1806 } else { | |
1807 if (tos_type == atos) { | |
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1808 VERIFY_OOP(obj->obj_field(field_offset)); |
0 | 1809 SET_STACK_OBJECT(obj->obj_field(field_offset), -1); |
1810 } else if (tos_type == itos) { | |
1811 SET_STACK_INT(obj->int_field(field_offset), -1); | |
1812 } else if (tos_type == ltos) { | |
1813 SET_STACK_LONG(obj->long_field(field_offset), 0); | |
1814 MORE_STACK(1); | |
1815 } else if (tos_type == btos) { | |
1816 SET_STACK_INT(obj->byte_field(field_offset), -1); | |
1817 } else if (tos_type == ctos) { | |
1818 SET_STACK_INT(obj->char_field(field_offset), -1); | |
1819 } else if (tos_type == stos) { | |
1820 SET_STACK_INT(obj->short_field(field_offset), -1); | |
1821 } else if (tos_type == ftos) { | |
1822 SET_STACK_FLOAT(obj->float_field(field_offset), -1); | |
1823 } else { | |
1824 SET_STACK_DOUBLE(obj->double_field(field_offset), 0); | |
1825 MORE_STACK(1); | |
1826 } | |
1827 } | |
1828 | |
1829 UPDATE_PC_AND_CONTINUE(3); | |
1830 } | |
1831 | |
1832 CASE(_putfield): | |
1833 CASE(_putstatic): | |
1834 { | |
1835 u2 index = Bytes::get_native_u2(pc+1); | |
1836 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
1837 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
1838 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
1839 handle_exception); | |
1840 cache = cp->entry_at(index); | |
1841 } | |
1842 | |
1843 #ifdef VM_JVMTI | |
1844 if (_jvmti_interp_events) { | |
1845 int *count_addr; | |
1846 oop obj; | |
1847 // Check to see if a field modification watch has been set | |
1848 // before we take the time to call into the VM. | |
1849 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
1850 if ( *count_addr > 0 ) { | |
1851 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
1852 obj = (oop)NULL; | |
1853 } | |
1854 else { | |
1855 if (cache->is_long() || cache->is_double()) { | |
1856 obj = (oop) STACK_OBJECT(-3); | |
1857 } else { | |
1858 obj = (oop) STACK_OBJECT(-2); | |
1859 } | |
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1860 VERIFY_OOP(obj); |
0 | 1861 } |
1862 | |
1863 CALL_VM(InterpreterRuntime::post_field_modification(THREAD, | |
1864 obj, | |
1865 cache, | |
1866 (jvalue *)STACK_SLOT(-1)), | |
1867 handle_exception); | |
1868 } | |
1869 } | |
1870 #endif /* VM_JVMTI */ | |
1871 | |
1872 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
1873 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
1874 | |
1875 oop obj; | |
1876 int count; | |
1877 TosState tos_type = cache->flag_state(); | |
1878 | |
1879 count = -1; | |
1880 if (tos_type == ltos || tos_type == dtos) { | |
1881 --count; | |
1882 } | |
1883 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
6926 | 1884 Klass* k = cache->f1_as_klass(); |
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1885 obj = k->java_mirror(); |
0 | 1886 } else { |
1887 --count; | |
1888 obj = (oop) STACK_OBJECT(count); | |
1889 CHECK_NULL(obj); | |
1890 } | |
1891 | |
1892 // | |
1893 // Now store the result | |
1894 // | |
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1895 int field_offset = cache->f2_as_index(); |
0 | 1896 if (cache->is_volatile()) { |
1897 if (tos_type == itos) { | |
1898 obj->release_int_field_put(field_offset, STACK_INT(-1)); | |
1899 } else if (tos_type == atos) { | |
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1900 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 1901 obj->release_obj_field_put(field_offset, STACK_OBJECT(-1)); |
1902 OrderAccess::release_store(&BYTE_MAP_BASE[(uintptr_t)obj >> CardTableModRefBS::card_shift], 0); | |
1903 } else if (tos_type == btos) { | |
1904 obj->release_byte_field_put(field_offset, STACK_INT(-1)); | |
1905 } else if (tos_type == ltos) { | |
1906 obj->release_long_field_put(field_offset, STACK_LONG(-1)); | |
1907 } else if (tos_type == ctos) { | |
1908 obj->release_char_field_put(field_offset, STACK_INT(-1)); | |
1909 } else if (tos_type == stos) { | |
1910 obj->release_short_field_put(field_offset, STACK_INT(-1)); | |
1911 } else if (tos_type == ftos) { | |
1912 obj->release_float_field_put(field_offset, STACK_FLOAT(-1)); | |
1913 } else { | |
1914 obj->release_double_field_put(field_offset, STACK_DOUBLE(-1)); | |
1915 } | |
1916 OrderAccess::storeload(); | |
1917 } else { | |
1918 if (tos_type == itos) { | |
1919 obj->int_field_put(field_offset, STACK_INT(-1)); | |
1920 } else if (tos_type == atos) { | |
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1921 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 1922 obj->obj_field_put(field_offset, STACK_OBJECT(-1)); |
1923 OrderAccess::release_store(&BYTE_MAP_BASE[(uintptr_t)obj >> CardTableModRefBS::card_shift], 0); | |
1924 } else if (tos_type == btos) { | |
1925 obj->byte_field_put(field_offset, STACK_INT(-1)); | |
1926 } else if (tos_type == ltos) { | |
1927 obj->long_field_put(field_offset, STACK_LONG(-1)); | |
1928 } else if (tos_type == ctos) { | |
1929 obj->char_field_put(field_offset, STACK_INT(-1)); | |
1930 } else if (tos_type == stos) { | |
1931 obj->short_field_put(field_offset, STACK_INT(-1)); | |
1932 } else if (tos_type == ftos) { | |
1933 obj->float_field_put(field_offset, STACK_FLOAT(-1)); | |
1934 } else { | |
1935 obj->double_field_put(field_offset, STACK_DOUBLE(-1)); | |
1936 } | |
1937 } | |
1938 | |
1939 UPDATE_PC_AND_TOS_AND_CONTINUE(3, count); | |
1940 } | |
1941 | |
1942 CASE(_new): { | |
1943 u2 index = Bytes::get_Java_u2(pc+1); | |
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1944 ConstantPool* constants = istate->method()->constants(); |
0 | 1945 if (!constants->tag_at(index).is_unresolved_klass()) { |
1946 // Make sure klass is initialized and doesn't have a finalizer | |
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1947 Klass* entry = constants->slot_at(index).get_klass(); |
0 | 1948 assert(entry->is_klass(), "Should be resolved klass"); |
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1949 Klass* k_entry = (Klass*) entry; |
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1950 assert(k_entry->oop_is_instance(), "Should be InstanceKlass"); |
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1951 InstanceKlass* ik = (InstanceKlass*) k_entry; |
0 | 1952 if ( ik->is_initialized() && ik->can_be_fastpath_allocated() ) { |
1953 size_t obj_size = ik->size_helper(); | |
1954 oop result = NULL; | |
1955 // If the TLAB isn't pre-zeroed then we'll have to do it | |
1956 bool need_zero = !ZeroTLAB; | |
1957 if (UseTLAB) { | |
1958 result = (oop) THREAD->tlab().allocate(obj_size); | |
1959 } | |
1960 if (result == NULL) { | |
1961 need_zero = true; | |
1962 // Try allocate in shared eden | |
1963 retry: | |
1964 HeapWord* compare_to = *Universe::heap()->top_addr(); | |
1965 HeapWord* new_top = compare_to + obj_size; | |
1966 if (new_top <= *Universe::heap()->end_addr()) { | |
1967 if (Atomic::cmpxchg_ptr(new_top, Universe::heap()->top_addr(), compare_to) != compare_to) { | |
1968 goto retry; | |
1969 } | |
1970 result = (oop) compare_to; | |
1971 } | |
1972 } | |
1973 if (result != NULL) { | |
1974 // Initialize object (if nonzero size and need) and then the header | |
1975 if (need_zero ) { | |
1976 HeapWord* to_zero = (HeapWord*) result + sizeof(oopDesc) / oopSize; | |
1977 obj_size -= sizeof(oopDesc) / oopSize; | |
1978 if (obj_size > 0 ) { | |
1979 memset(to_zero, 0, obj_size * HeapWordSize); | |
1980 } | |
1981 } | |
1982 if (UseBiasedLocking) { | |
1983 result->set_mark(ik->prototype_header()); | |
1984 } else { | |
1985 result->set_mark(markOopDesc::prototype()); | |
1986 } | |
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1987 result->set_klass_gap(0); |
0 | 1988 result->set_klass(k_entry); |
1989 SET_STACK_OBJECT(result, 0); | |
1990 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
1991 } | |
1992 } | |
1993 } | |
1994 // Slow case allocation | |
1995 CALL_VM(InterpreterRuntime::_new(THREAD, METHOD->constants(), index), | |
1996 handle_exception); | |
1997 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
1998 THREAD->set_vm_result(NULL); | |
1999 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
2000 } | |
2001 CASE(_anewarray): { | |
2002 u2 index = Bytes::get_Java_u2(pc+1); | |
2003 jint size = STACK_INT(-1); | |
2004 CALL_VM(InterpreterRuntime::anewarray(THREAD, METHOD->constants(), index, size), | |
2005 handle_exception); | |
2006 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
2007 THREAD->set_vm_result(NULL); | |
2008 UPDATE_PC_AND_CONTINUE(3); | |
2009 } | |
2010 CASE(_multianewarray): { | |
2011 jint dims = *(pc+3); | |
2012 jint size = STACK_INT(-1); | |
2013 // stack grows down, dimensions are up! | |
2014 jint *dimarray = | |
1509 | 2015 (jint*)&topOfStack[dims * Interpreter::stackElementWords+ |
2016 Interpreter::stackElementWords-1]; | |
0 | 2017 //adjust pointer to start of stack element |
2018 CALL_VM(InterpreterRuntime::multianewarray(THREAD, dimarray), | |
2019 handle_exception); | |
2020 SET_STACK_OBJECT(THREAD->vm_result(), -dims); | |
2021 THREAD->set_vm_result(NULL); | |
2022 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -(dims-1)); | |
2023 } | |
2024 CASE(_checkcast): | |
2025 if (STACK_OBJECT(-1) != NULL) { | |
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2026 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 2027 u2 index = Bytes::get_Java_u2(pc+1); |
2028 if (ProfileInterpreter) { | |
2029 // needs Profile_checkcast QQQ | |
2030 ShouldNotReachHere(); | |
2031 } | |
2032 // Constant pool may have actual klass or unresolved klass. If it is | |
2033 // unresolved we must resolve it | |
2034 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
2035 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
2036 } | |
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2037 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass(); |
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2038 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); //ebx |
0 | 2039 // |
2040 // Check for compatibilty. This check must not GC!! | |
2041 // Seems way more expensive now that we must dispatch | |
2042 // | |
2043 if (objKlassOop != klassOf && | |
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2044 !objKlassOop->is_subtype_of(klassOf)) { |
0 | 2045 ResourceMark rm(THREAD); |
6983 | 2046 const char* objName = objKlassOop->external_name(); |
2047 const char* klassName = klassOf->external_name(); | |
0 | 2048 char* message = SharedRuntime::generate_class_cast_message( |
2049 objName, klassName); | |
2050 VM_JAVA_ERROR(vmSymbols::java_lang_ClassCastException(), message); | |
2051 } | |
2052 } else { | |
2053 if (UncommonNullCast) { | |
2054 // istate->method()->set_null_cast_seen(); | |
2055 // [RGV] Not sure what to do here! | |
2056 | |
2057 } | |
2058 } | |
2059 UPDATE_PC_AND_CONTINUE(3); | |
2060 | |
2061 CASE(_instanceof): | |
2062 if (STACK_OBJECT(-1) == NULL) { | |
2063 SET_STACK_INT(0, -1); | |
2064 } else { | |
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2065 VERIFY_OOP(STACK_OBJECT(-1)); |
0 | 2066 u2 index = Bytes::get_Java_u2(pc+1); |
2067 // Constant pool may have actual klass or unresolved klass. If it is | |
2068 // unresolved we must resolve it | |
2069 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
2070 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
2071 } | |
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2072 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass(); |
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2073 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); |
0 | 2074 // |
2075 // Check for compatibilty. This check must not GC!! | |
2076 // Seems way more expensive now that we must dispatch | |
2077 // | |
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2078 if ( objKlassOop == klassOf || objKlassOop->is_subtype_of(klassOf)) { |
0 | 2079 SET_STACK_INT(1, -1); |
2080 } else { | |
2081 SET_STACK_INT(0, -1); | |
2082 } | |
2083 } | |
2084 UPDATE_PC_AND_CONTINUE(3); | |
2085 | |
2086 CASE(_ldc_w): | |
2087 CASE(_ldc): | |
2088 { | |
2089 u2 index; | |
2090 bool wide = false; | |
2091 int incr = 2; // frequent case | |
2092 if (opcode == Bytecodes::_ldc) { | |
2093 index = pc[1]; | |
2094 } else { | |
2095 index = Bytes::get_Java_u2(pc+1); | |
2096 incr = 3; | |
2097 wide = true; | |
2098 } | |
2099 | |
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2100 ConstantPool* constants = METHOD->constants(); |
0 | 2101 switch (constants->tag_at(index).value()) { |
2102 case JVM_CONSTANT_Integer: | |
2103 SET_STACK_INT(constants->int_at(index), 0); | |
2104 break; | |
2105 | |
2106 case JVM_CONSTANT_Float: | |
2107 SET_STACK_FLOAT(constants->float_at(index), 0); | |
2108 break; | |
2109 | |
2110 case JVM_CONSTANT_String: | |
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2111 { |
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2112 oop result = constants->resolved_references()->obj_at(index); |
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2113 if (result == NULL) { |
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2114 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception); |
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2115 SET_STACK_OBJECT(THREAD->vm_result(), 0); |
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2116 THREAD->set_vm_result(NULL); |
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2117 } else { |
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2118 VERIFY_OOP(result); |
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2119 SET_STACK_OBJECT(result, 0); |
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2120 } |
0 | 2121 break; |
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2122 } |
0 | 2123 |
2124 case JVM_CONSTANT_Class: | |
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2125 VERIFY_OOP(constants->resolved_klass_at(index)->java_mirror()); |
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2126 SET_STACK_OBJECT(constants->resolved_klass_at(index)->java_mirror(), 0); |
0 | 2127 break; |
2128 | |
2129 case JVM_CONSTANT_UnresolvedClass: | |
2130 case JVM_CONSTANT_UnresolvedClassInError: | |
2131 CALL_VM(InterpreterRuntime::ldc(THREAD, wide), handle_exception); | |
2132 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
2133 THREAD->set_vm_result(NULL); | |
2134 break; | |
2135 | |
2136 default: ShouldNotReachHere(); | |
2137 } | |
2138 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); | |
2139 } | |
2140 | |
2141 CASE(_ldc2_w): | |
2142 { | |
2143 u2 index = Bytes::get_Java_u2(pc+1); | |
2144 | |
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2145 ConstantPool* constants = METHOD->constants(); |
0 | 2146 switch (constants->tag_at(index).value()) { |
2147 | |
2148 case JVM_CONSTANT_Long: | |
2149 SET_STACK_LONG(constants->long_at(index), 1); | |
2150 break; | |
2151 | |
2152 case JVM_CONSTANT_Double: | |
2153 SET_STACK_DOUBLE(constants->double_at(index), 1); | |
2154 break; | |
2155 default: ShouldNotReachHere(); | |
2156 } | |
2157 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 2); | |
2158 } | |
2159 | |
2480 | 2160 CASE(_fast_aldc_w): |
2161 CASE(_fast_aldc): { | |
2162 u2 index; | |
2163 int incr; | |
2164 if (opcode == Bytecodes::_fast_aldc) { | |
2165 index = pc[1]; | |
2166 incr = 2; | |
2167 } else { | |
2168 index = Bytes::get_native_u2(pc+1); | |
2169 incr = 3; | |
2170 } | |
2171 | |
2172 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2173 // This kind of CP cache entry does not need to match the flags byte, because | |
2174 // there is a 1-1 relation between bytecode type and CP entry type. | |
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2175 ConstantPool* constants = METHOD->constants(); |
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2176 oop result = constants->resolved_references()->obj_at(index); |
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2177 if (result == NULL) { |
2480 | 2178 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), |
2179 handle_exception); | |
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2180 result = THREAD->vm_result(); |
2480 | 2181 } |
2182 | |
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2183 VERIFY_OOP(result); |
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2184 SET_STACK_OBJECT(result, 0); |
2480 | 2185 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); |
2186 } | |
2187 | |
2188 CASE(_invokedynamic): { | |
6926 | 2189 |
2480 | 2190 if (!EnableInvokeDynamic) { |
2191 // We should not encounter this bytecode if !EnableInvokeDynamic. | |
2192 // The verifier will stop it. However, if we get past the verifier, | |
2193 // this will stop the thread in a reasonable way, without crashing the JVM. | |
2194 CALL_VM(InterpreterRuntime::throw_IncompatibleClassChangeError(THREAD), | |
2195 handle_exception); | |
2196 ShouldNotReachHere(); | |
2197 } | |
2198 | |
6926 | 2199 u4 index = Bytes::get_native_u4(pc+1); |
2200 ConstantPoolCacheEntry* cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index); | |
2480 | 2201 |
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2202 // We are resolved if the resolved_references field contains a non-null object (CallSite, etc.) |
2480 | 2203 // This kind of CP cache entry does not need to match the flags byte, because |
2204 // there is a 1-1 relation between bytecode type and CP entry type. | |
6926 | 2205 if (! cache->is_resolved((Bytecodes::Code) opcode)) { |
2480 | 2206 CALL_VM(InterpreterRuntime::resolve_invokedynamic(THREAD), |
2207 handle_exception); | |
6926 | 2208 cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index); |
2209 } | |
2210 | |
2211 Method* method = cache->f1_as_method(); | |
2212 VERIFY_OOP(method); | |
2213 | |
2214 if (cache->has_appendix()) { | |
2215 ConstantPool* constants = METHOD->constants(); | |
2216 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0); | |
2217 MORE_STACK(1); | |
2218 } | |
2219 | |
2220 istate->set_msg(call_method); | |
2221 istate->set_callee(method); | |
2222 istate->set_callee_entry_point(method->from_interpreted_entry()); | |
2223 istate->set_bcp_advance(5); | |
2224 | |
2225 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2226 } | |
2227 | |
2228 CASE(_invokehandle): { | |
2229 | |
2230 if (!EnableInvokeDynamic) { | |
2231 ShouldNotReachHere(); | |
2480 | 2232 } |
2233 | |
6926 | 2234 u2 index = Bytes::get_native_u2(pc+1); |
2235 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2236 | |
2237 if (! cache->is_resolved((Bytecodes::Code) opcode)) { | |
2238 CALL_VM(InterpreterRuntime::resolve_invokehandle(THREAD), | |
2239 handle_exception); | |
2240 cache = cp->entry_at(index); | |
2241 } | |
2242 | |
2243 Method* method = cache->f1_as_method(); | |
2244 | |
2245 VERIFY_OOP(method); | |
2246 | |
2247 if (cache->has_appendix()) { | |
2248 ConstantPool* constants = METHOD->constants(); | |
2249 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0); | |
2250 MORE_STACK(1); | |
2251 } | |
2252 | |
2253 istate->set_msg(call_method); | |
2254 istate->set_callee(method); | |
2255 istate->set_callee_entry_point(method->from_interpreted_entry()); | |
2256 istate->set_bcp_advance(3); | |
2480 | 2257 |
2258 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2259 } | |
2260 | |
0 | 2261 CASE(_invokeinterface): { |
2262 u2 index = Bytes::get_native_u2(pc+1); | |
2263 | |
2264 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2265 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2266 | |
2267 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2268 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
2269 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
2270 handle_exception); | |
2271 cache = cp->entry_at(index); | |
2272 } | |
2273 | |
2274 istate->set_msg(call_method); | |
2275 | |
2276 // Special case of invokeinterface called for virtual method of | |
2277 // java.lang.Object. See cpCacheOop.cpp for details. | |
2278 // This code isn't produced by javac, but could be produced by | |
2279 // another compliant java compiler. | |
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2280 if (cache->is_forced_virtual()) { |
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2281 Method* callee; |
0 | 2282 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); |
2283 if (cache->is_vfinal()) { | |
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2284 callee = cache->f2_as_vfinal_method(); |
0 | 2285 } else { |
2286 // get receiver | |
2287 int parms = cache->parameter_size(); | |
2288 // Same comments as invokevirtual apply here | |
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2289 VERIFY_OOP(STACK_OBJECT(-parms)); |
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2290 InstanceKlass* rcvrKlass = (InstanceKlass*) |
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2291 STACK_OBJECT(-parms)->klass(); |
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2292 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()]; |
0 | 2293 } |
2294 istate->set_callee(callee); | |
2295 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2296 #ifdef VM_JVMTI | |
2297 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2298 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2299 } | |
2300 #endif /* VM_JVMTI */ | |
2301 istate->set_bcp_advance(5); | |
2302 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2303 } | |
2304 | |
2305 // this could definitely be cleaned up QQQ | |
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2306 Method* callee; |
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2307 Klass* iclass = cache->f1_as_klass(); |
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2308 // InstanceKlass* interface = (InstanceKlass*) iclass; |
0 | 2309 // get receiver |
2310 int parms = cache->parameter_size(); | |
2311 oop rcvr = STACK_OBJECT(-parms); | |
2312 CHECK_NULL(rcvr); | |
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2313 InstanceKlass* int2 = (InstanceKlass*) rcvr->klass(); |
0 | 2314 itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable(); |
2315 int i; | |
2316 for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) { | |
2317 if (ki->interface_klass() == iclass) break; | |
2318 } | |
2319 // If the interface isn't found, this class doesn't implement this | |
2320 // interface. The link resolver checks this but only for the first | |
2321 // time this interface is called. | |
2322 if (i == int2->itable_length()) { | |
2323 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), ""); | |
2324 } | |
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2325 int mindex = cache->f2_as_index(); |
0 | 2326 itableMethodEntry* im = ki->first_method_entry(rcvr->klass()); |
2327 callee = im[mindex].method(); | |
2328 if (callee == NULL) { | |
2329 VM_JAVA_ERROR(vmSymbols::java_lang_AbstractMethodError(), ""); | |
2330 } | |
2331 | |
2332 istate->set_callee(callee); | |
2333 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2334 #ifdef VM_JVMTI | |
2335 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2336 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2337 } | |
2338 #endif /* VM_JVMTI */ | |
2339 istate->set_bcp_advance(5); | |
2340 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2341 } | |
2342 | |
2343 CASE(_invokevirtual): | |
2344 CASE(_invokespecial): | |
2345 CASE(_invokestatic): { | |
2346 u2 index = Bytes::get_native_u2(pc+1); | |
2347 | |
2348 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2349 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2350 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2351 | |
2352 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
2353 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
2354 handle_exception); | |
2355 cache = cp->entry_at(index); | |
2356 } | |
2357 | |
2358 istate->set_msg(call_method); | |
2359 { | |
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2360 Method* callee; |
0 | 2361 if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) { |
2362 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
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2363 if (cache->is_vfinal()) callee = cache->f2_as_vfinal_method(); |
0 | 2364 else { |
2365 // get receiver | |
2366 int parms = cache->parameter_size(); | |
2367 // this works but needs a resourcemark and seems to create a vtable on every call: | |
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2368 // Method* callee = rcvr->klass()->vtable()->method_at(cache->f2_as_index()); |
0 | 2369 // |
2370 // this fails with an assert | |
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2371 // InstanceKlass* rcvrKlass = InstanceKlass::cast(STACK_OBJECT(-parms)->klass()); |
0 | 2372 // but this works |
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2373 VERIFY_OOP(STACK_OBJECT(-parms)); |
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2374 InstanceKlass* rcvrKlass = (InstanceKlass*) STACK_OBJECT(-parms)->klass(); |
0 | 2375 /* |
2376 Executing this code in java.lang.String: | |
2377 public String(char value[]) { | |
2378 this.count = value.length; | |
2379 this.value = (char[])value.clone(); | |
2380 } | |
2381 | |
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2382 a find on rcvr->klass() reports: |
0 | 2383 {type array char}{type array class} |
2384 - klass: {other class} | |
2385 | |
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2386 but using InstanceKlass::cast(STACK_OBJECT(-parms)->klass()) causes in assertion failure |
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2387 because rcvr->klass()->oop_is_instance() == 0 |
0 | 2388 However it seems to have a vtable in the right location. Huh? |
2389 | |
2390 */ | |
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2391 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()]; |
0 | 2392 } |
2393 } else { | |
2394 if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) { | |
2395 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
2396 } | |
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2397 callee = cache->f1_as_method(); |
0 | 2398 } |
2399 | |
2400 istate->set_callee(callee); | |
2401 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2402 #ifdef VM_JVMTI | |
2403 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2404 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2405 } | |
2406 #endif /* VM_JVMTI */ | |
2407 istate->set_bcp_advance(3); | |
2408 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2409 } | |
2410 } | |
2411 | |
2412 /* Allocate memory for a new java object. */ | |
2413 | |
2414 CASE(_newarray): { | |
2415 BasicType atype = (BasicType) *(pc+1); | |
2416 jint size = STACK_INT(-1); | |
2417 CALL_VM(InterpreterRuntime::newarray(THREAD, atype, size), | |
2418 handle_exception); | |
2419 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
2420 THREAD->set_vm_result(NULL); | |
2421 | |
2422 UPDATE_PC_AND_CONTINUE(2); | |
2423 } | |
2424 | |
2425 /* Throw an exception. */ | |
2426 | |
2427 CASE(_athrow): { | |
2428 oop except_oop = STACK_OBJECT(-1); | |
2429 CHECK_NULL(except_oop); | |
2430 // set pending_exception so we use common code | |
2431 THREAD->set_pending_exception(except_oop, NULL, 0); | |
2432 goto handle_exception; | |
2433 } | |
2434 | |
2435 /* goto and jsr. They are exactly the same except jsr pushes | |
2436 * the address of the next instruction first. | |
2437 */ | |
2438 | |
2439 CASE(_jsr): { | |
2440 /* push bytecode index on stack */ | |
2441 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 3), 0); | |
2442 MORE_STACK(1); | |
2443 /* FALL THROUGH */ | |
2444 } | |
2445 | |
2446 CASE(_goto): | |
2447 { | |
2448 int16_t offset = (int16_t)Bytes::get_Java_u2(pc + 1); | |
2449 address branch_pc = pc; | |
2450 UPDATE_PC(offset); | |
2451 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
2452 CONTINUE; | |
2453 } | |
2454 | |
2455 CASE(_jsr_w): { | |
2456 /* push return address on the stack */ | |
2457 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 5), 0); | |
2458 MORE_STACK(1); | |
2459 /* FALL THROUGH */ | |
2460 } | |
2461 | |
2462 CASE(_goto_w): | |
2463 { | |
2464 int32_t offset = Bytes::get_Java_u4(pc + 1); | |
2465 address branch_pc = pc; | |
2466 UPDATE_PC(offset); | |
2467 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
2468 CONTINUE; | |
2469 } | |
2470 | |
2471 /* return from a jsr or jsr_w */ | |
2472 | |
2473 CASE(_ret): { | |
2474 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(pc[1])); | |
2475 UPDATE_PC_AND_CONTINUE(0); | |
2476 } | |
2477 | |
2478 /* debugger breakpoint */ | |
2479 | |
2480 CASE(_breakpoint): { | |
2481 Bytecodes::Code original_bytecode; | |
2482 DECACHE_STATE(); | |
2483 SET_LAST_JAVA_FRAME(); | |
2484 original_bytecode = InterpreterRuntime::get_original_bytecode_at(THREAD, | |
2485 METHOD, pc); | |
2486 RESET_LAST_JAVA_FRAME(); | |
2487 CACHE_STATE(); | |
2488 if (THREAD->has_pending_exception()) goto handle_exception; | |
2489 CALL_VM(InterpreterRuntime::_breakpoint(THREAD, METHOD, pc), | |
2490 handle_exception); | |
2491 | |
2492 opcode = (jubyte)original_bytecode; | |
2493 goto opcode_switch; | |
2494 } | |
2495 | |
2496 DEFAULT: | |
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2497 fatal(err_msg("Unimplemented opcode %d = %s", opcode, |
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2498 Bytecodes::name((Bytecodes::Code)opcode))); |
0 | 2499 goto finish; |
2500 | |
2501 } /* switch(opc) */ | |
2502 | |
2503 | |
2504 #ifdef USELABELS | |
2505 check_for_exception: | |
2506 #endif | |
2507 { | |
2508 if (!THREAD->has_pending_exception()) { | |
2509 CONTINUE; | |
2510 } | |
2511 /* We will be gcsafe soon, so flush our state. */ | |
2512 DECACHE_PC(); | |
2513 goto handle_exception; | |
2514 } | |
2515 do_continue: ; | |
2516 | |
2517 } /* while (1) interpreter loop */ | |
2518 | |
2519 | |
2520 // An exception exists in the thread state see whether this activation can handle it | |
2521 handle_exception: { | |
2522 | |
2523 HandleMarkCleaner __hmc(THREAD); | |
2524 Handle except_oop(THREAD, THREAD->pending_exception()); | |
2525 // Prevent any subsequent HandleMarkCleaner in the VM | |
2526 // from freeing the except_oop handle. | |
2527 HandleMark __hm(THREAD); | |
2528 | |
2529 THREAD->clear_pending_exception(); | |
2530 assert(except_oop(), "No exception to process"); | |
2531 intptr_t continuation_bci; | |
2532 // expression stack is emptied | |
1509 | 2533 topOfStack = istate->stack_base() - Interpreter::stackElementWords; |
0 | 2534 CALL_VM(continuation_bci = (intptr_t)InterpreterRuntime::exception_handler_for_exception(THREAD, except_oop()), |
2535 handle_exception); | |
2536 | |
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2537 except_oop = THREAD->vm_result(); |
0 | 2538 THREAD->set_vm_result(NULL); |
2539 if (continuation_bci >= 0) { | |
2540 // Place exception on top of stack | |
2541 SET_STACK_OBJECT(except_oop(), 0); | |
2542 MORE_STACK(1); | |
2543 pc = METHOD->code_base() + continuation_bci; | |
2544 if (TraceExceptions) { | |
2545 ttyLocker ttyl; | |
2546 ResourceMark rm; | |
2547 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
2548 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
2549 tty->print_cr(" at bci %d, continuing at %d for thread " INTPTR_FORMAT, | |
2550 pc - (intptr_t)METHOD->code_base(), | |
2551 continuation_bci, THREAD); | |
2552 } | |
2553 // for AbortVMOnException flag | |
2554 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
2555 goto run; | |
2556 } | |
2557 if (TraceExceptions) { | |
2558 ttyLocker ttyl; | |
2559 ResourceMark rm; | |
2560 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
2561 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
2562 tty->print_cr(" at bci %d, unwinding for thread " INTPTR_FORMAT, | |
2563 pc - (intptr_t) METHOD->code_base(), | |
2564 THREAD); | |
2565 } | |
2566 // for AbortVMOnException flag | |
2567 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
2568 // No handler in this activation, unwind and try again | |
2569 THREAD->set_pending_exception(except_oop(), NULL, 0); | |
2570 goto handle_return; | |
2571 } /* handle_exception: */ | |
2572 | |
2573 | |
2574 | |
2575 // Return from an interpreter invocation with the result of the interpretation | |
2576 // on the top of the Java Stack (or a pending exception) | |
2577 | |
2578 handle_Pop_Frame: | |
2579 | |
2580 // We don't really do anything special here except we must be aware | |
2581 // that we can get here without ever locking the method (if sync). | |
2582 // Also we skip the notification of the exit. | |
2583 | |
2584 istate->set_msg(popping_frame); | |
2585 // Clear pending so while the pop is in process | |
2586 // we don't start another one if a call_vm is done. | |
2587 THREAD->clr_pop_frame_pending(); | |
2588 // Let interpreter (only) see the we're in the process of popping a frame | |
2589 THREAD->set_pop_frame_in_process(); | |
2590 | |
2591 handle_return: | |
2592 { | |
2593 DECACHE_STATE(); | |
2594 | |
2595 bool suppress_error = istate->msg() == popping_frame; | |
2596 bool suppress_exit_event = THREAD->has_pending_exception() || suppress_error; | |
2597 Handle original_exception(THREAD, THREAD->pending_exception()); | |
2598 Handle illegal_state_oop(THREAD, NULL); | |
2599 | |
2600 // We'd like a HandleMark here to prevent any subsequent HandleMarkCleaner | |
2601 // in any following VM entries from freeing our live handles, but illegal_state_oop | |
2602 // isn't really allocated yet and so doesn't become live until later and | |
2603 // in unpredicatable places. Instead we must protect the places where we enter the | |
2604 // VM. It would be much simpler (and safer) if we could allocate a real handle with | |
2605 // a NULL oop in it and then overwrite the oop later as needed. This isn't | |
2606 // unfortunately isn't possible. | |
2607 | |
2608 THREAD->clear_pending_exception(); | |
2609 | |
2610 // | |
2611 // As far as we are concerned we have returned. If we have a pending exception | |
2612 // that will be returned as this invocation's result. However if we get any | |
2613 // exception(s) while checking monitor state one of those IllegalMonitorStateExceptions | |
2614 // will be our final result (i.e. monitor exception trumps a pending exception). | |
2615 // | |
2616 | |
2617 // If we never locked the method (or really passed the point where we would have), | |
2618 // there is no need to unlock it (or look for other monitors), since that | |
2619 // could not have happened. | |
2620 | |
2621 if (THREAD->do_not_unlock()) { | |
2622 | |
2623 // Never locked, reset the flag now because obviously any caller must | |
2624 // have passed their point of locking for us to have gotten here. | |
2625 | |
2626 THREAD->clr_do_not_unlock(); | |
2627 } else { | |
2628 // At this point we consider that we have returned. We now check that the | |
2629 // locks were properly block structured. If we find that they were not | |
2630 // used properly we will return with an illegal monitor exception. | |
2631 // The exception is checked by the caller not the callee since this | |
2632 // checking is considered to be part of the invocation and therefore | |
2633 // in the callers scope (JVM spec 8.13). | |
2634 // | |
2635 // Another weird thing to watch for is if the method was locked | |
2636 // recursively and then not exited properly. This means we must | |
2637 // examine all the entries in reverse time(and stack) order and | |
2638 // unlock as we find them. If we find the method monitor before | |
2639 // we are at the initial entry then we should throw an exception. | |
2640 // It is not clear the template based interpreter does this | |
2641 // correctly | |
2642 | |
2643 BasicObjectLock* base = istate->monitor_base(); | |
2644 BasicObjectLock* end = (BasicObjectLock*) istate->stack_base(); | |
2645 bool method_unlock_needed = METHOD->is_synchronized(); | |
2646 // We know the initial monitor was used for the method don't check that | |
2647 // slot in the loop | |
2648 if (method_unlock_needed) base--; | |
2649 | |
2650 // Check all the monitors to see they are unlocked. Install exception if found to be locked. | |
2651 while (end < base) { | |
2652 oop lockee = end->obj(); | |
2653 if (lockee != NULL) { | |
2654 BasicLock* lock = end->lock(); | |
2655 markOop header = lock->displaced_header(); | |
2656 end->set_obj(NULL); | |
2657 // If it isn't recursive we either must swap old header or call the runtime | |
2658 if (header != NULL) { | |
2659 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { | |
2660 // restore object for the slow case | |
2661 end->set_obj(lockee); | |
2662 { | |
2663 // Prevent any HandleMarkCleaner from freeing our live handles | |
2664 HandleMark __hm(THREAD); | |
2665 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, end)); | |
2666 } | |
2667 } | |
2668 } | |
2669 // One error is plenty | |
2670 if (illegal_state_oop() == NULL && !suppress_error) { | |
2671 { | |
2672 // Prevent any HandleMarkCleaner from freeing our live handles | |
2673 HandleMark __hm(THREAD); | |
2674 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
2675 } | |
2676 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
2677 illegal_state_oop = THREAD->pending_exception(); | |
2678 THREAD->clear_pending_exception(); | |
2679 } | |
2680 } | |
2681 end++; | |
2682 } | |
2683 // Unlock the method if needed | |
2684 if (method_unlock_needed) { | |
2685 if (base->obj() == NULL) { | |
2686 // The method is already unlocked this is not good. | |
2687 if (illegal_state_oop() == NULL && !suppress_error) { | |
2688 { | |
2689 // Prevent any HandleMarkCleaner from freeing our live handles | |
2690 HandleMark __hm(THREAD); | |
2691 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
2692 } | |
2693 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
2694 illegal_state_oop = THREAD->pending_exception(); | |
2695 THREAD->clear_pending_exception(); | |
2696 } | |
2697 } else { | |
2698 // | |
2699 // The initial monitor is always used for the method | |
2700 // However if that slot is no longer the oop for the method it was unlocked | |
2701 // and reused by something that wasn't unlocked! | |
2702 // | |
2703 // deopt can come in with rcvr dead because c2 knows | |
2704 // its value is preserved in the monitor. So we can't use locals[0] at all | |
2705 // and must use first monitor slot. | |
2706 // | |
2707 oop rcvr = base->obj(); | |
2708 if (rcvr == NULL) { | |
2709 if (!suppress_error) { | |
2710 VM_JAVA_ERROR_NO_JUMP(vmSymbols::java_lang_NullPointerException(), ""); | |
2711 illegal_state_oop = THREAD->pending_exception(); | |
2712 THREAD->clear_pending_exception(); | |
2713 } | |
2714 } else { | |
2715 BasicLock* lock = base->lock(); | |
2716 markOop header = lock->displaced_header(); | |
2717 base->set_obj(NULL); | |
2718 // If it isn't recursive we either must swap old header or call the runtime | |
2719 if (header != NULL) { | |
2720 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) { | |
2721 // restore object for the slow case | |
2722 base->set_obj(rcvr); | |
2723 { | |
2724 // Prevent any HandleMarkCleaner from freeing our live handles | |
2725 HandleMark __hm(THREAD); | |
2726 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base)); | |
2727 } | |
2728 if (THREAD->has_pending_exception()) { | |
2729 if (!suppress_error) illegal_state_oop = THREAD->pending_exception(); | |
2730 THREAD->clear_pending_exception(); | |
2731 } | |
2732 } | |
2733 } | |
2734 } | |
2735 } | |
2736 } | |
2737 } | |
2738 | |
2739 // | |
2740 // Notify jvmti/jvmdi | |
2741 // | |
2742 // NOTE: we do not notify a method_exit if we have a pending exception, | |
2743 // including an exception we generate for unlocking checks. In the former | |
2744 // case, JVMDI has already been notified by our call for the exception handler | |
2745 // and in both cases as far as JVMDI is concerned we have already returned. | |
2746 // If we notify it again JVMDI will be all confused about how many frames | |
2747 // are still on the stack (4340444). | |
2748 // | |
2749 // NOTE Further! It turns out the the JVMTI spec in fact expects to see | |
2750 // method_exit events whenever we leave an activation unless it was done | |
2751 // for popframe. This is nothing like jvmdi. However we are passing the | |
2752 // tests at the moment (apparently because they are jvmdi based) so rather | |
2753 // than change this code and possibly fail tests we will leave it alone | |
2754 // (with this note) in anticipation of changing the vm and the tests | |
2755 // simultaneously. | |
2756 | |
2757 | |
2758 // | |
2759 suppress_exit_event = suppress_exit_event || illegal_state_oop() != NULL; | |
2760 | |
2761 | |
2762 | |
2763 #ifdef VM_JVMTI | |
2764 if (_jvmti_interp_events) { | |
2765 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2766 // entry/exit events are sent for that thread to track stack depth. | |
2767 if ( !suppress_exit_event && THREAD->is_interp_only_mode() ) { | |
2768 { | |
2769 // Prevent any HandleMarkCleaner from freeing our live handles | |
2770 HandleMark __hm(THREAD); | |
2771 CALL_VM_NOCHECK(InterpreterRuntime::post_method_exit(THREAD)); | |
2772 } | |
2773 } | |
2774 } | |
2775 #endif /* VM_JVMTI */ | |
2776 | |
2777 // | |
2778 // See if we are returning any exception | |
2779 // A pending exception that was pending prior to a possible popping frame | |
2780 // overrides the popping frame. | |
2781 // | |
2782 assert(!suppress_error || suppress_error && illegal_state_oop() == NULL, "Error was not suppressed"); | |
2783 if (illegal_state_oop() != NULL || original_exception() != NULL) { | |
2784 // inform the frame manager we have no result | |
2785 istate->set_msg(throwing_exception); | |
2786 if (illegal_state_oop() != NULL) | |
2787 THREAD->set_pending_exception(illegal_state_oop(), NULL, 0); | |
2788 else | |
2789 THREAD->set_pending_exception(original_exception(), NULL, 0); | |
2790 istate->set_return_kind((Bytecodes::Code)opcode); | |
2791 UPDATE_PC_AND_RETURN(0); | |
2792 } | |
2793 | |
2794 if (istate->msg() == popping_frame) { | |
2795 // Make it simpler on the assembly code and set the message for the frame pop. | |
2796 // returns | |
2797 if (istate->prev() == NULL) { | |
2798 // We must be returning to a deoptimized frame (because popframe only happens between | |
2799 // two interpreted frames). We need to save the current arguments in C heap so that | |
2800 // the deoptimized frame when it restarts can copy the arguments to its expression | |
2801 // stack and re-execute the call. We also have to notify deoptimization that this | |
605 | 2802 // has occurred and to pick the preserved args copy them to the deoptimized frame's |
0 | 2803 // java expression stack. Yuck. |
2804 // | |
2805 THREAD->popframe_preserve_args(in_ByteSize(METHOD->size_of_parameters() * wordSize), | |
2806 LOCALS_SLOT(METHOD->size_of_parameters() - 1)); | |
2807 THREAD->set_popframe_condition_bit(JavaThread::popframe_force_deopt_reexecution_bit); | |
2808 } | |
1681
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2809 THREAD->clr_pop_frame_in_process(); |
0 | 2810 } |
1681
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2811 |
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2812 // Normal return |
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2813 // Advance the pc and return to frame manager |
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2814 istate->set_msg(return_from_method); |
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2815 istate->set_return_kind((Bytecodes::Code)opcode); |
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2816 UPDATE_PC_AND_RETURN(1); |
0 | 2817 } /* handle_return: */ |
2818 | |
2819 // This is really a fatal error return | |
2820 | |
2821 finish: | |
2822 DECACHE_TOS(); | |
2823 DECACHE_PC(); | |
2824 | |
2825 return; | |
2826 } | |
2827 | |
2828 /* | |
2829 * All the code following this point is only produced once and is not present | |
2830 * in the JVMTI version of the interpreter | |
2831 */ | |
2832 | |
2833 #ifndef VM_JVMTI | |
2834 | |
2835 // This constructor should only be used to contruct the object to signal | |
2836 // interpreter initialization. All other instances should be created by | |
2837 // the frame manager. | |
2838 BytecodeInterpreter::BytecodeInterpreter(messages msg) { | |
2839 if (msg != initialize) ShouldNotReachHere(); | |
2840 _msg = msg; | |
2841 _self_link = this; | |
2842 _prev_link = NULL; | |
2843 } | |
2844 | |
2845 // Inline static functions for Java Stack and Local manipulation | |
2846 | |
2847 // The implementations are platform dependent. We have to worry about alignment | |
2848 // issues on some machines which can change on the same platform depending on | |
2849 // whether it is an LP64 machine also. | |
2850 address BytecodeInterpreter::stack_slot(intptr_t *tos, int offset) { | |
2851 return (address) tos[Interpreter::expr_index_at(-offset)]; | |
2852 } | |
2853 | |
2854 jint BytecodeInterpreter::stack_int(intptr_t *tos, int offset) { | |
2855 return *((jint*) &tos[Interpreter::expr_index_at(-offset)]); | |
2856 } | |
2857 | |
2858 jfloat BytecodeInterpreter::stack_float(intptr_t *tos, int offset) { | |
2859 return *((jfloat *) &tos[Interpreter::expr_index_at(-offset)]); | |
2860 } | |
2861 | |
2862 oop BytecodeInterpreter::stack_object(intptr_t *tos, int offset) { | |
2863 return (oop)tos [Interpreter::expr_index_at(-offset)]; | |
2864 } | |
2865 | |
2866 jdouble BytecodeInterpreter::stack_double(intptr_t *tos, int offset) { | |
2867 return ((VMJavaVal64*) &tos[Interpreter::expr_index_at(-offset)])->d; | |
2868 } | |
2869 | |
2870 jlong BytecodeInterpreter::stack_long(intptr_t *tos, int offset) { | |
2871 return ((VMJavaVal64 *) &tos[Interpreter::expr_index_at(-offset)])->l; | |
2872 } | |
2873 | |
2874 // only used for value types | |
2875 void BytecodeInterpreter::set_stack_slot(intptr_t *tos, address value, | |
2876 int offset) { | |
2877 *((address *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2878 } | |
2879 | |
2880 void BytecodeInterpreter::set_stack_int(intptr_t *tos, int value, | |
2881 int offset) { | |
2882 *((jint *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2883 } | |
2884 | |
2885 void BytecodeInterpreter::set_stack_float(intptr_t *tos, jfloat value, | |
2886 int offset) { | |
2887 *((jfloat *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2888 } | |
2889 | |
2890 void BytecodeInterpreter::set_stack_object(intptr_t *tos, oop value, | |
2891 int offset) { | |
2892 *((oop *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2893 } | |
2894 | |
2895 // needs to be platform dep for the 32 bit platforms. | |
2896 void BytecodeInterpreter::set_stack_double(intptr_t *tos, jdouble value, | |
2897 int offset) { | |
2898 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = value; | |
2899 } | |
2900 | |
2901 void BytecodeInterpreter::set_stack_double_from_addr(intptr_t *tos, | |
2902 address addr, int offset) { | |
2903 (((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = | |
2904 ((VMJavaVal64*)addr)->d); | |
2905 } | |
2906 | |
2907 void BytecodeInterpreter::set_stack_long(intptr_t *tos, jlong value, | |
2908 int offset) { | |
2909 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
2910 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = value; | |
2911 } | |
2912 | |
2913 void BytecodeInterpreter::set_stack_long_from_addr(intptr_t *tos, | |
2914 address addr, int offset) { | |
2915 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
2916 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = | |
2917 ((VMJavaVal64*)addr)->l; | |
2918 } | |
2919 | |
2920 // Locals | |
2921 | |
2922 address BytecodeInterpreter::locals_slot(intptr_t* locals, int offset) { | |
2923 return (address)locals[Interpreter::local_index_at(-offset)]; | |
2924 } | |
2925 jint BytecodeInterpreter::locals_int(intptr_t* locals, int offset) { | |
2926 return (jint)locals[Interpreter::local_index_at(-offset)]; | |
2927 } | |
2928 jfloat BytecodeInterpreter::locals_float(intptr_t* locals, int offset) { | |
2929 return (jfloat)locals[Interpreter::local_index_at(-offset)]; | |
2930 } | |
2931 oop BytecodeInterpreter::locals_object(intptr_t* locals, int offset) { | |
2932 return (oop)locals[Interpreter::local_index_at(-offset)]; | |
2933 } | |
2934 jdouble BytecodeInterpreter::locals_double(intptr_t* locals, int offset) { | |
2935 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d; | |
2936 } | |
2937 jlong BytecodeInterpreter::locals_long(intptr_t* locals, int offset) { | |
2938 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l; | |
2939 } | |
2940 | |
2941 // Returns the address of locals value. | |
2942 address BytecodeInterpreter::locals_long_at(intptr_t* locals, int offset) { | |
2943 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
2944 } | |
2945 address BytecodeInterpreter::locals_double_at(intptr_t* locals, int offset) { | |
2946 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
2947 } | |
2948 | |
2949 // Used for local value or returnAddress | |
2950 void BytecodeInterpreter::set_locals_slot(intptr_t *locals, | |
2951 address value, int offset) { | |
2952 *((address*)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2953 } | |
2954 void BytecodeInterpreter::set_locals_int(intptr_t *locals, | |
2955 jint value, int offset) { | |
2956 *((jint *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2957 } | |
2958 void BytecodeInterpreter::set_locals_float(intptr_t *locals, | |
2959 jfloat value, int offset) { | |
2960 *((jfloat *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2961 } | |
2962 void BytecodeInterpreter::set_locals_object(intptr_t *locals, | |
2963 oop value, int offset) { | |
2964 *((oop *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2965 } | |
2966 void BytecodeInterpreter::set_locals_double(intptr_t *locals, | |
2967 jdouble value, int offset) { | |
2968 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = value; | |
2969 } | |
2970 void BytecodeInterpreter::set_locals_long(intptr_t *locals, | |
2971 jlong value, int offset) { | |
2972 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = value; | |
2973 } | |
2974 void BytecodeInterpreter::set_locals_double_from_addr(intptr_t *locals, | |
2975 address addr, int offset) { | |
2976 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = ((VMJavaVal64*)addr)->d; | |
2977 } | |
2978 void BytecodeInterpreter::set_locals_long_from_addr(intptr_t *locals, | |
2979 address addr, int offset) { | |
2980 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = ((VMJavaVal64*)addr)->l; | |
2981 } | |
2982 | |
2983 void BytecodeInterpreter::astore(intptr_t* tos, int stack_offset, | |
2984 intptr_t* locals, int locals_offset) { | |
2985 intptr_t value = tos[Interpreter::expr_index_at(-stack_offset)]; | |
2986 locals[Interpreter::local_index_at(-locals_offset)] = value; | |
2987 } | |
2988 | |
2989 | |
2990 void BytecodeInterpreter::copy_stack_slot(intptr_t *tos, int from_offset, | |
2991 int to_offset) { | |
2992 tos[Interpreter::expr_index_at(-to_offset)] = | |
2993 (intptr_t)tos[Interpreter::expr_index_at(-from_offset)]; | |
2994 } | |
2995 | |
2996 void BytecodeInterpreter::dup(intptr_t *tos) { | |
2997 copy_stack_slot(tos, -1, 0); | |
2998 } | |
2999 void BytecodeInterpreter::dup2(intptr_t *tos) { | |
3000 copy_stack_slot(tos, -2, 0); | |
3001 copy_stack_slot(tos, -1, 1); | |
3002 } | |
3003 | |
3004 void BytecodeInterpreter::dup_x1(intptr_t *tos) { | |
3005 /* insert top word two down */ | |
3006 copy_stack_slot(tos, -1, 0); | |
3007 copy_stack_slot(tos, -2, -1); | |
3008 copy_stack_slot(tos, 0, -2); | |
3009 } | |
3010 | |
3011 void BytecodeInterpreter::dup_x2(intptr_t *tos) { | |
3012 /* insert top word three down */ | |
3013 copy_stack_slot(tos, -1, 0); | |
3014 copy_stack_slot(tos, -2, -1); | |
3015 copy_stack_slot(tos, -3, -2); | |
3016 copy_stack_slot(tos, 0, -3); | |
3017 } | |
3018 void BytecodeInterpreter::dup2_x1(intptr_t *tos) { | |
3019 /* insert top 2 slots three down */ | |
3020 copy_stack_slot(tos, -1, 1); | |
3021 copy_stack_slot(tos, -2, 0); | |
3022 copy_stack_slot(tos, -3, -1); | |
3023 copy_stack_slot(tos, 1, -2); | |
3024 copy_stack_slot(tos, 0, -3); | |
3025 } | |
3026 void BytecodeInterpreter::dup2_x2(intptr_t *tos) { | |
3027 /* insert top 2 slots four down */ | |
3028 copy_stack_slot(tos, -1, 1); | |
3029 copy_stack_slot(tos, -2, 0); | |
3030 copy_stack_slot(tos, -3, -1); | |
3031 copy_stack_slot(tos, -4, -2); | |
3032 copy_stack_slot(tos, 1, -3); | |
3033 copy_stack_slot(tos, 0, -4); | |
3034 } | |
3035 | |
3036 | |
3037 void BytecodeInterpreter::swap(intptr_t *tos) { | |
3038 // swap top two elements | |
3039 intptr_t val = tos[Interpreter::expr_index_at(1)]; | |
3040 // Copy -2 entry to -1 | |
3041 copy_stack_slot(tos, -2, -1); | |
3042 // Store saved -1 entry into -2 | |
3043 tos[Interpreter::expr_index_at(2)] = val; | |
3044 } | |
3045 // -------------------------------------------------------------------------------- | |
3046 // Non-product code | |
3047 #ifndef PRODUCT | |
3048 | |
3049 const char* BytecodeInterpreter::C_msg(BytecodeInterpreter::messages msg) { | |
3050 switch (msg) { | |
3051 case BytecodeInterpreter::no_request: return("no_request"); | |
3052 case BytecodeInterpreter::initialize: return("initialize"); | |
3053 // status message to C++ interpreter | |
3054 case BytecodeInterpreter::method_entry: return("method_entry"); | |
3055 case BytecodeInterpreter::method_resume: return("method_resume"); | |
3056 case BytecodeInterpreter::got_monitors: return("got_monitors"); | |
3057 case BytecodeInterpreter::rethrow_exception: return("rethrow_exception"); | |
3058 // requests to frame manager from C++ interpreter | |
3059 case BytecodeInterpreter::call_method: return("call_method"); | |
3060 case BytecodeInterpreter::return_from_method: return("return_from_method"); | |
3061 case BytecodeInterpreter::more_monitors: return("more_monitors"); | |
3062 case BytecodeInterpreter::throwing_exception: return("throwing_exception"); | |
3063 case BytecodeInterpreter::popping_frame: return("popping_frame"); | |
3064 case BytecodeInterpreter::do_osr: return("do_osr"); | |
3065 // deopt | |
3066 case BytecodeInterpreter::deopt_resume: return("deopt_resume"); | |
3067 case BytecodeInterpreter::deopt_resume2: return("deopt_resume2"); | |
3068 default: return("BAD MSG"); | |
3069 } | |
3070 } | |
3071 void | |
3072 BytecodeInterpreter::print() { | |
3073 tty->print_cr("thread: " INTPTR_FORMAT, (uintptr_t) this->_thread); | |
3074 tty->print_cr("bcp: " INTPTR_FORMAT, (uintptr_t) this->_bcp); | |
3075 tty->print_cr("locals: " INTPTR_FORMAT, (uintptr_t) this->_locals); | |
3076 tty->print_cr("constants: " INTPTR_FORMAT, (uintptr_t) this->_constants); | |
3077 { | |
3078 ResourceMark rm; | |
3079 char *method_name = _method->name_and_sig_as_C_string(); | |
3080 tty->print_cr("method: " INTPTR_FORMAT "[ %s ]", (uintptr_t) this->_method, method_name); | |
3081 } | |
3082 tty->print_cr("mdx: " INTPTR_FORMAT, (uintptr_t) this->_mdx); | |
3083 tty->print_cr("stack: " INTPTR_FORMAT, (uintptr_t) this->_stack); | |
3084 tty->print_cr("msg: %s", C_msg(this->_msg)); | |
3085 tty->print_cr("result_to_call._callee: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee); | |
3086 tty->print_cr("result_to_call._callee_entry_point: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee_entry_point); | |
3087 tty->print_cr("result_to_call._bcp_advance: %d ", this->_result._to_call._bcp_advance); | |
3088 tty->print_cr("osr._osr_buf: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_buf); | |
3089 tty->print_cr("osr._osr_entry: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_entry); | |
3090 tty->print_cr("result_return_kind 0x%x ", (int) this->_result._return_kind); | |
3091 tty->print_cr("prev_link: " INTPTR_FORMAT, (uintptr_t) this->_prev_link); | |
3092 tty->print_cr("native_mirror: " INTPTR_FORMAT, (uintptr_t) this->_oop_temp); | |
3093 tty->print_cr("stack_base: " INTPTR_FORMAT, (uintptr_t) this->_stack_base); | |
3094 tty->print_cr("stack_limit: " INTPTR_FORMAT, (uintptr_t) this->_stack_limit); | |
3095 tty->print_cr("monitor_base: " INTPTR_FORMAT, (uintptr_t) this->_monitor_base); | |
3096 #ifdef SPARC | |
3097 tty->print_cr("last_Java_pc: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_pc); | |
3098 tty->print_cr("frame_bottom: " INTPTR_FORMAT, (uintptr_t) this->_frame_bottom); | |
3099 tty->print_cr("&native_fresult: " INTPTR_FORMAT, (uintptr_t) &this->_native_fresult); | |
3100 tty->print_cr("native_lresult: " INTPTR_FORMAT, (uintptr_t) this->_native_lresult); | |
3101 #endif | |
7994 | 3102 #if !defined(ZERO) |
0 | 3103 tty->print_cr("last_Java_fp: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_fp); |
7994 | 3104 #endif // !ZERO |
0 | 3105 tty->print_cr("self_link: " INTPTR_FORMAT, (uintptr_t) this->_self_link); |
3106 } | |
3107 | |
3108 extern "C" { | |
3109 void PI(uintptr_t arg) { | |
3110 ((BytecodeInterpreter*)arg)->print(); | |
3111 } | |
3112 } | |
3113 #endif // PRODUCT | |
3114 | |
3115 #endif // JVMTI | |
3116 #endif // CC_INTERP |