1 /*
2 * Copyright (c) 2002, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // no precompiled headers
26 #include "cds/cdsConfig.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "gc/shared/collectedHeap.hpp"
30 #include "gc/shared/threadLocalAllocBuffer.inline.hpp"
31 #include "gc/shared/tlab_globals.hpp"
32 #include "interpreter/bytecodeHistogram.hpp"
33 #include "interpreter/zero/bytecodeInterpreter.inline.hpp"
34 #include "interpreter/interpreter.hpp"
35 #include "interpreter/interpreterRuntime.hpp"
36 #include "jvm_io.h"
37 #include "logging/log.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "memory/universe.hpp"
40 #include "oops/constantPool.inline.hpp"
41 #include "oops/cpCache.inline.hpp"
42 #include "oops/instanceKlass.inline.hpp"
43 #include "oops/klass.inline.hpp"
44 #include "oops/method.inline.hpp"
45 #include "oops/methodCounters.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/objArrayOop.inline.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/resolvedFieldEntry.hpp"
50 #include "oops/resolvedIndyEntry.hpp"
51 #include "oops/resolvedMethodEntry.hpp"
52 #include "oops/typeArrayOop.inline.hpp"
53 #include "prims/jvmtiExport.hpp"
54 #include "prims/jvmtiThreadState.hpp"
55 #include "runtime/atomic.hpp"
56 #include "runtime/frame.inline.hpp"
57 #include "runtime/handles.inline.hpp"
58 #include "runtime/interfaceSupport.inline.hpp"
59 #include "runtime/orderAccess.hpp"
60 #include "runtime/sharedRuntime.hpp"
61 #include "runtime/threadCritical.hpp"
62 #include "utilities/debug.hpp"
63 #include "utilities/exceptions.hpp"
64 #include "utilities/macros.hpp"
65
66 /*
67 * USELABELS - If using GCC, then use labels for the opcode dispatching
68 * rather -then a switch statement. This improves performance because it
69 * gives us the opportunity to have the instructions that calculate the
70 * next opcode to jump to be intermixed with the rest of the instructions
71 * that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro).
72 */
73 #undef USELABELS
74 #ifdef __GNUC__
75 /*
76 ASSERT signifies debugging. It is much easier to step thru bytecodes if we
77 don't use the computed goto approach.
78 */
79 #ifndef ASSERT
80 #define USELABELS
81 #endif
82 #endif
83
84 #undef CASE
85 #ifdef USELABELS
86 #define CASE(opcode) opc ## opcode
87 #define DEFAULT opc_default
88 #else
89 #define CASE(opcode) case Bytecodes:: opcode
90 #define DEFAULT default
91 #endif
92
93 /*
94 * PREFETCH_OPCCODE - Some compilers do better if you prefetch the next
95 * opcode before going back to the top of the while loop, rather then having
96 * the top of the while loop handle it. This provides a better opportunity
97 * for instruction scheduling. Some compilers just do this prefetch
98 * automatically. Some actually end up with worse performance if you
99 * force the prefetch. Solaris gcc seems to do better, but cc does worse.
100 */
101 #undef PREFETCH_OPCCODE
102 #define PREFETCH_OPCCODE
103
104 JRT_ENTRY(void, at_safepoint(JavaThread* current)) {}
105 JRT_END
106
107 /*
108 Interpreter safepoint: it is expected that the interpreter will have no live
109 handles of its own creation live at an interpreter safepoint. Therefore we
110 run a HandleMarkCleaner and trash all handles allocated in the call chain
111 since the JavaCalls::call_helper invocation that initiated the chain.
112 There really shouldn't be any handles remaining to trash but this is cheap
113 in relation to a safepoint.
114 */
115 #define RETURN_SAFEPOINT \
116 if (SafepointMechanism::should_process(THREAD)) { \
117 CALL_VM(at_safepoint(THREAD), handle_exception); \
118 }
119
120 /*
121 * VM_JAVA_ERROR - Macro for throwing a java exception from
122 * the interpreter loop. Should really be a CALL_VM but there
123 * is no entry point to do the transition to vm so we just
124 * do it by hand here.
125 */
126 #define VM_JAVA_ERROR_NO_JUMP(name, msg) \
127 DECACHE_STATE(); \
128 SET_LAST_JAVA_FRAME(); \
129 { \
130 ThreadInVMfromJava trans(THREAD); \
131 Exceptions::_throw_msg(THREAD, __FILE__, __LINE__, name, msg); \
132 } \
133 RESET_LAST_JAVA_FRAME(); \
134 CACHE_STATE();
135
136 // Normal throw of a java error.
137 #define VM_JAVA_ERROR(name, msg) \
138 VM_JAVA_ERROR_NO_JUMP(name, msg) \
139 goto handle_exception;
140
141 #ifdef PRODUCT
142 #define DO_UPDATE_INSTRUCTION_COUNT(opcode)
143 #else
144 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) \
145 { \
146 if (PrintBytecodeHistogram) { \
147 BytecodeHistogram::_counters[(Bytecodes::Code)opcode]++; \
148 } \
149 if (CountBytecodes || TraceBytecodes || StopInterpreterAt > 0) { \
150 BytecodeCounter::_counter_value++; \
151 if (StopInterpreterAt == BytecodeCounter::_counter_value) { \
152 os::breakpoint(); \
153 } \
154 if (TraceBytecodes) { \
155 CALL_VM((void)InterpreterRuntime::trace_bytecode(THREAD, 0, \
156 topOfStack[Interpreter::expr_index_at(1)], \
157 topOfStack[Interpreter::expr_index_at(2)]), \
158 handle_exception); \
159 } \
160 } \
161 }
162 #endif
163
164 #undef DEBUGGER_SINGLE_STEP_NOTIFY
165 #if INCLUDE_JVMTI
166 /* NOTE: (kbr) This macro must be called AFTER the PC has been
167 incremented. JvmtiExport::at_single_stepping_point() may cause a
168 breakpoint opcode to get inserted at the current PC to allow the
169 debugger to coalesce single-step events.
170
171 As a result if we call at_single_stepping_point() we refetch opcode
172 to get the current opcode. This will override any other prefetching
173 that might have occurred.
174 */
175 #define DEBUGGER_SINGLE_STEP_NOTIFY() \
176 { \
177 if (JVMTI_ENABLED && JvmtiExport::should_post_single_step()) { \
178 DECACHE_STATE(); \
179 SET_LAST_JAVA_FRAME(); \
180 ThreadInVMfromJava trans(THREAD); \
181 JvmtiExport::at_single_stepping_point(THREAD, \
182 istate->method(), \
183 pc); \
184 RESET_LAST_JAVA_FRAME(); \
185 CACHE_STATE(); \
186 if (THREAD->has_pending_popframe() && \
187 !THREAD->pop_frame_in_process()) { \
188 goto handle_Pop_Frame; \
189 } \
190 if (THREAD->jvmti_thread_state() && \
191 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \
192 goto handle_Early_Return; \
193 } \
194 opcode = *pc; \
195 } \
196 }
197 #else
198 #define DEBUGGER_SINGLE_STEP_NOTIFY()
199 #endif // INCLUDE_JVMTI
200
201 /*
202 * CONTINUE - Macro for executing the next opcode.
203 */
204 #undef CONTINUE
205 #ifdef USELABELS
206 // Have to do this dispatch this way in C++ because otherwise gcc complains about crossing an
207 // initialization (which is is the initialization of the table pointer...)
208 #define DISPATCH(opcode) goto *(void*)dispatch_table[opcode]
209 #define CONTINUE { \
210 opcode = *pc; \
211 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
212 DEBUGGER_SINGLE_STEP_NOTIFY(); \
213 DISPATCH(opcode); \
214 }
215 #else
216 #ifdef PREFETCH_OPCCODE
217 #define CONTINUE { \
218 opcode = *pc; \
219 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
220 DEBUGGER_SINGLE_STEP_NOTIFY(); \
221 continue; \
222 }
223 #else
224 #define CONTINUE { \
225 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
226 DEBUGGER_SINGLE_STEP_NOTIFY(); \
227 continue; \
228 }
229 #endif
230 #endif
231
232
233 #define UPDATE_PC(opsize) {pc += opsize; }
234 /*
235 * UPDATE_PC_AND_TOS - Macro for updating the pc and topOfStack.
236 */
237 #undef UPDATE_PC_AND_TOS
238 #define UPDATE_PC_AND_TOS(opsize, stack) \
239 {pc += opsize; MORE_STACK(stack); }
240
241 /*
242 * UPDATE_PC_AND_TOS_AND_CONTINUE - Macro for updating the pc and topOfStack,
243 * and executing the next opcode. It's somewhat similar to the combination
244 * of UPDATE_PC_AND_TOS and CONTINUE, but with some minor optimizations.
245 */
246 #undef UPDATE_PC_AND_TOS_AND_CONTINUE
247 #ifdef USELABELS
248 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \
249 pc += opsize; opcode = *pc; MORE_STACK(stack); \
250 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
251 DEBUGGER_SINGLE_STEP_NOTIFY(); \
252 DISPATCH(opcode); \
253 }
254
255 #define UPDATE_PC_AND_CONTINUE(opsize) { \
256 pc += opsize; opcode = *pc; \
257 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
258 DEBUGGER_SINGLE_STEP_NOTIFY(); \
259 DISPATCH(opcode); \
260 }
261 #else
262 #ifdef PREFETCH_OPCCODE
263 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \
264 pc += opsize; opcode = *pc; MORE_STACK(stack); \
265 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
266 DEBUGGER_SINGLE_STEP_NOTIFY(); \
267 goto do_continue; \
268 }
269
270 #define UPDATE_PC_AND_CONTINUE(opsize) { \
271 pc += opsize; opcode = *pc; \
272 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
273 DEBUGGER_SINGLE_STEP_NOTIFY(); \
274 goto do_continue; \
275 }
276 #else
277 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \
278 pc += opsize; MORE_STACK(stack); \
279 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
280 DEBUGGER_SINGLE_STEP_NOTIFY(); \
281 goto do_continue; \
282 }
283
284 #define UPDATE_PC_AND_CONTINUE(opsize) { \
285 pc += opsize; \
286 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
287 DEBUGGER_SINGLE_STEP_NOTIFY(); \
288 goto do_continue; \
289 }
290 #endif /* PREFETCH_OPCCODE */
291 #endif /* USELABELS */
292
293 // About to call a new method, update the save the adjusted pc and return to frame manager
294 #define UPDATE_PC_AND_RETURN(opsize) \
295 DECACHE_TOS(); \
296 istate->set_bcp(pc+opsize); \
297 return;
298
299 #define REWRITE_AT_PC(val) \
300 *pc = val;
301
302 #define METHOD istate->method()
303 #define GET_METHOD_COUNTERS(res)
304 #define DO_BACKEDGE_CHECKS(skip, branch_pc)
305
306 /*
307 * For those opcodes that need to have a GC point on a backwards branch
308 */
309
310 /*
311 * Macros for caching and flushing the interpreter state. Some local
312 * variables need to be flushed out to the frame before we do certain
313 * things (like pushing frames or becoming gc safe) and some need to
314 * be recached later (like after popping a frame). We could use one
315 * macro to cache or decache everything, but this would be less then
316 * optimal because we don't always need to cache or decache everything
317 * because some things we know are already cached or decached.
318 */
319 #undef DECACHE_TOS
320 #undef CACHE_TOS
321 #undef CACHE_PREV_TOS
322 #define DECACHE_TOS() istate->set_stack(topOfStack);
323
324 #define CACHE_TOS() topOfStack = (intptr_t *)istate->stack();
325
326 #undef DECACHE_PC
327 #undef CACHE_PC
328 #define DECACHE_PC() istate->set_bcp(pc);
329 #define CACHE_PC() pc = istate->bcp();
330 #define CACHE_CP() cp = istate->constants();
331 #define CACHE_LOCALS() locals = istate->locals();
332 #undef CACHE_FRAME
333 #define CACHE_FRAME()
334
335 // BCI() returns the current bytecode-index.
336 #undef BCI
337 #define BCI() ((int)(intptr_t)(pc - (intptr_t)istate->method()->code_base()))
338
339 /*
340 * CHECK_NULL - Macro for throwing a NullPointerException if the object
341 * passed is a null ref.
342 * On some architectures/platforms it should be possible to do this implicitly
343 */
344 #undef CHECK_NULL
345 #define CHECK_NULL(obj_) \
346 if ((obj_) == nullptr) { \
347 VM_JAVA_ERROR(vmSymbols::java_lang_NullPointerException(), nullptr); \
348 } \
349 VERIFY_OOP(obj_)
350
351 #define VMdoubleConstZero() 0.0
352 #define VMdoubleConstOne() 1.0
353 #define VMlongConstZero() (max_jlong-max_jlong)
354 #define VMlongConstOne() ((max_jlong-max_jlong)+1)
355
356 /*
357 * Alignment
358 */
359 #define VMalignWordUp(val) (((uintptr_t)(val) + 3) & ~3)
360
361 // Decache the interpreter state that interpreter modifies directly (i.e. GC is indirect mod)
362 #define DECACHE_STATE() DECACHE_PC(); DECACHE_TOS();
363
364 // Reload interpreter state after calling the VM or a possible GC
365 #define CACHE_STATE() \
366 CACHE_TOS(); \
367 CACHE_PC(); \
368 CACHE_CP(); \
369 CACHE_LOCALS();
370
371 // Call the VM with last java frame only.
372 #define CALL_VM_NAKED_LJF(func) \
373 DECACHE_STATE(); \
374 SET_LAST_JAVA_FRAME(); \
375 func; \
376 RESET_LAST_JAVA_FRAME(); \
377 CACHE_STATE();
378
379 // Call the VM. Don't check for pending exceptions.
380 #define CALL_VM_NOCHECK(func) \
381 CALL_VM_NAKED_LJF(func) \
382 if (THREAD->has_pending_popframe() && \
383 !THREAD->pop_frame_in_process()) { \
384 goto handle_Pop_Frame; \
385 } \
386 if (THREAD->jvmti_thread_state() && \
387 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \
388 goto handle_Early_Return; \
389 }
390
391 // Call the VM and check for pending exceptions
392 #define CALL_VM(func, label) { \
393 CALL_VM_NOCHECK(func); \
394 if (THREAD->has_pending_exception()) goto label; \
395 }
396
397 #define MAYBE_POST_FIELD_ACCESS(obj) { \
398 if (JVMTI_ENABLED) { \
399 int* count_addr; \
400 /* Check to see if a field modification watch has been set */ \
401 /* before we take the time to call into the VM. */ \
402 count_addr = (int*)JvmtiExport::get_field_access_count_addr(); \
403 if (*count_addr > 0) { \
404 oop target; \
405 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { \
406 target = nullptr; \
407 } else { \
408 target = obj; \
409 } \
410 CALL_VM(InterpreterRuntime::post_field_access(THREAD, \
411 target, entry), \
412 handle_exception); \
413 } \
414 } \
415 }
416
417 #define MAYBE_POST_FIELD_MODIFICATION(obj) { \
418 if (JVMTI_ENABLED) { \
419 int* count_addr; \
420 /* Check to see if a field modification watch has been set */ \
421 /* before we take the time to call into the VM. */ \
422 count_addr = (int*)JvmtiExport::get_field_modification_count_addr(); \
423 if (*count_addr > 0) { \
424 oop target; \
425 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { \
426 target = nullptr; \
427 } else { \
428 target = obj; \
429 } \
430 CALL_VM(InterpreterRuntime::post_field_modification(THREAD, \
431 target, entry, \
432 (jvalue*)STACK_SLOT(-1)), \
433 handle_exception); \
434 } \
435 } \
436 }
437
438 static inline int fast_get_type(TosState tos) {
439 switch (tos) {
440 case ztos:
441 case btos: return Bytecodes::_fast_bgetfield;
442 case ctos: return Bytecodes::_fast_cgetfield;
443 case stos: return Bytecodes::_fast_sgetfield;
444 case itos: return Bytecodes::_fast_igetfield;
445 case ltos: return Bytecodes::_fast_lgetfield;
446 case ftos: return Bytecodes::_fast_fgetfield;
447 case dtos: return Bytecodes::_fast_dgetfield;
448 case atos: return Bytecodes::_fast_agetfield;
449 default:
450 ShouldNotReachHere();
451 return -1;
452 }
453 }
454
455 static inline int fast_put_type(TosState tos) {
456 switch (tos) {
457 case ztos: return Bytecodes::_fast_zputfield;
458 case btos: return Bytecodes::_fast_bputfield;
459 case ctos: return Bytecodes::_fast_cputfield;
460 case stos: return Bytecodes::_fast_sputfield;
461 case itos: return Bytecodes::_fast_iputfield;
462 case ltos: return Bytecodes::_fast_lputfield;
463 case ftos: return Bytecodes::_fast_fputfield;
464 case dtos: return Bytecodes::_fast_dputfield;
465 case atos: return Bytecodes::_fast_aputfield;
466 default:
467 ShouldNotReachHere();
468 return -1;
469 }
470 }
471
472 /*
473 * BytecodeInterpreter::run(interpreterState istate)
474 *
475 * The real deal. This is where byte codes actually get interpreted.
476 * Basically it's a big while loop that iterates until we return from
477 * the method passed in.
478 */
479
480 // Instantiate variants of the method for future linking.
481 template void BytecodeInterpreter::run<false, false>(interpreterState istate);
482 template void BytecodeInterpreter::run<false, true>(interpreterState istate);
483 template void BytecodeInterpreter::run< true, false>(interpreterState istate);
484 template void BytecodeInterpreter::run< true, true>(interpreterState istate);
485
486 template<bool JVMTI_ENABLED, bool REWRITE_BYTECODES>
487 void BytecodeInterpreter::run(interpreterState istate) {
488 intptr_t* topOfStack = (intptr_t *)istate->stack(); /* access with STACK macros */
489 address pc = istate->bcp();
490 jubyte opcode;
491 intptr_t* locals = istate->locals();
492 ConstantPoolCache* cp = istate->constants(); // method()->constants()->cache()
493 #ifdef LOTS_OF_REGS
494 JavaThread* THREAD = istate->thread();
495 #else
496 #undef THREAD
497 #define THREAD istate->thread()
498 #endif
499
500 #ifdef ASSERT
501 assert(labs(istate->stack_base() - istate->stack_limit()) == (istate->method()->max_stack() + 1),
502 "Bad stack limit");
503 /* QQQ this should be a stack method so we don't know actual direction */
504 assert(topOfStack >= istate->stack_limit() && topOfStack < istate->stack_base(),
505 "Stack top out of range");
506
507 // Verify linkages.
508 interpreterState l = istate;
509 do {
510 assert(l == l->_self_link, "bad link");
511 l = l->_prev_link;
512 } while (l != nullptr);
513 // Screwups with stack management usually cause us to overwrite istate
514 // save a copy so we can verify it.
515 interpreterState orig = istate;
516 #endif
517
518 #ifdef USELABELS
519 const static void* const opclabels_data[256] = {
520 /* 0x00 */ &&opc_nop, &&opc_aconst_null, &&opc_iconst_m1, &&opc_iconst_0,
521 /* 0x04 */ &&opc_iconst_1, &&opc_iconst_2, &&opc_iconst_3, &&opc_iconst_4,
522 /* 0x08 */ &&opc_iconst_5, &&opc_lconst_0, &&opc_lconst_1, &&opc_fconst_0,
523 /* 0x0C */ &&opc_fconst_1, &&opc_fconst_2, &&opc_dconst_0, &&opc_dconst_1,
524
525 /* 0x10 */ &&opc_bipush, &&opc_sipush, &&opc_ldc, &&opc_ldc_w,
526 /* 0x14 */ &&opc_ldc2_w, &&opc_iload, &&opc_lload, &&opc_fload,
527 /* 0x18 */ &&opc_dload, &&opc_aload, &&opc_iload_0, &&opc_iload_1,
528 /* 0x1C */ &&opc_iload_2, &&opc_iload_3, &&opc_lload_0, &&opc_lload_1,
529
530 /* 0x20 */ &&opc_lload_2, &&opc_lload_3, &&opc_fload_0, &&opc_fload_1,
531 /* 0x24 */ &&opc_fload_2, &&opc_fload_3, &&opc_dload_0, &&opc_dload_1,
532 /* 0x28 */ &&opc_dload_2, &&opc_dload_3, &&opc_aload_0, &&opc_aload_1,
533 /* 0x2C */ &&opc_aload_2, &&opc_aload_3, &&opc_iaload, &&opc_laload,
534
535 /* 0x30 */ &&opc_faload, &&opc_daload, &&opc_aaload, &&opc_baload,
536 /* 0x34 */ &&opc_caload, &&opc_saload, &&opc_istore, &&opc_lstore,
537 /* 0x38 */ &&opc_fstore, &&opc_dstore, &&opc_astore, &&opc_istore_0,
538 /* 0x3C */ &&opc_istore_1, &&opc_istore_2, &&opc_istore_3, &&opc_lstore_0,
539
540 /* 0x40 */ &&opc_lstore_1, &&opc_lstore_2, &&opc_lstore_3, &&opc_fstore_0,
541 /* 0x44 */ &&opc_fstore_1, &&opc_fstore_2, &&opc_fstore_3, &&opc_dstore_0,
542 /* 0x48 */ &&opc_dstore_1, &&opc_dstore_2, &&opc_dstore_3, &&opc_astore_0,
543 /* 0x4C */ &&opc_astore_1, &&opc_astore_2, &&opc_astore_3, &&opc_iastore,
544
545 /* 0x50 */ &&opc_lastore, &&opc_fastore, &&opc_dastore, &&opc_aastore,
546 /* 0x54 */ &&opc_bastore, &&opc_castore, &&opc_sastore, &&opc_pop,
547 /* 0x58 */ &&opc_pop2, &&opc_dup, &&opc_dup_x1, &&opc_dup_x2,
548 /* 0x5C */ &&opc_dup2, &&opc_dup2_x1, &&opc_dup2_x2, &&opc_swap,
549
550 /* 0x60 */ &&opc_iadd, &&opc_ladd, &&opc_fadd, &&opc_dadd,
551 /* 0x64 */ &&opc_isub, &&opc_lsub, &&opc_fsub, &&opc_dsub,
552 /* 0x68 */ &&opc_imul, &&opc_lmul, &&opc_fmul, &&opc_dmul,
553 /* 0x6C */ &&opc_idiv, &&opc_ldiv, &&opc_fdiv, &&opc_ddiv,
554
555 /* 0x70 */ &&opc_irem, &&opc_lrem, &&opc_frem, &&opc_drem,
556 /* 0x74 */ &&opc_ineg, &&opc_lneg, &&opc_fneg, &&opc_dneg,
557 /* 0x78 */ &&opc_ishl, &&opc_lshl, &&opc_ishr, &&opc_lshr,
558 /* 0x7C */ &&opc_iushr, &&opc_lushr, &&opc_iand, &&opc_land,
559
560 /* 0x80 */ &&opc_ior, &&opc_lor, &&opc_ixor, &&opc_lxor,
561 /* 0x84 */ &&opc_iinc, &&opc_i2l, &&opc_i2f, &&opc_i2d,
562 /* 0x88 */ &&opc_l2i, &&opc_l2f, &&opc_l2d, &&opc_f2i,
563 /* 0x8C */ &&opc_f2l, &&opc_f2d, &&opc_d2i, &&opc_d2l,
564
565 /* 0x90 */ &&opc_d2f, &&opc_i2b, &&opc_i2c, &&opc_i2s,
566 /* 0x94 */ &&opc_lcmp, &&opc_fcmpl, &&opc_fcmpg, &&opc_dcmpl,
567 /* 0x98 */ &&opc_dcmpg, &&opc_ifeq, &&opc_ifne, &&opc_iflt,
568 /* 0x9C */ &&opc_ifge, &&opc_ifgt, &&opc_ifle, &&opc_if_icmpeq,
569
570 /* 0xA0 */ &&opc_if_icmpne, &&opc_if_icmplt, &&opc_if_icmpge, &&opc_if_icmpgt,
571 /* 0xA4 */ &&opc_if_icmple, &&opc_if_acmpeq, &&opc_if_acmpne, &&opc_goto,
572 /* 0xA8 */ &&opc_jsr, &&opc_ret, &&opc_tableswitch, &&opc_lookupswitch,
573 /* 0xAC */ &&opc_ireturn, &&opc_lreturn, &&opc_freturn, &&opc_dreturn,
574
575 /* 0xB0 */ &&opc_areturn, &&opc_return, &&opc_getstatic, &&opc_putstatic,
576 /* 0xB4 */ &&opc_getfield, &&opc_putfield, &&opc_invokevirtual, &&opc_invokespecial,
577 /* 0xB8 */ &&opc_invokestatic, &&opc_invokeinterface, &&opc_invokedynamic, &&opc_new,
578 /* 0xBC */ &&opc_newarray, &&opc_anewarray, &&opc_arraylength, &&opc_athrow,
579
580 /* 0xC0 */ &&opc_checkcast, &&opc_instanceof, &&opc_monitorenter, &&opc_monitorexit,
581 /* 0xC4 */ &&opc_wide, &&opc_multianewarray, &&opc_ifnull, &&opc_ifnonnull,
582 /* 0xC8 */ &&opc_goto_w, &&opc_jsr_w, &&opc_breakpoint, &&opc_fast_agetfield,
583 /* 0xCC */ &&opc_fast_bgetfield,&&opc_fast_cgetfield, &&opc_fast_dgetfield, &&opc_fast_fgetfield,
584
585 /* 0xD0 */ &&opc_fast_igetfield,&&opc_fast_lgetfield, &&opc_fast_sgetfield, &&opc_fast_aputfield,
586 /* 0xD4 */ &&opc_fast_bputfield,&&opc_fast_zputfield, &&opc_fast_cputfield, &&opc_fast_dputfield,
587 /* 0xD8 */ &&opc_fast_fputfield,&&opc_fast_iputfield, &&opc_fast_lputfield, &&opc_fast_sputfield,
588 /* 0xDC */ &&opc_fast_aload_0, &&opc_fast_iaccess_0, &&opc_fast_aaccess_0, &&opc_fast_faccess_0,
589
590 /* 0xE0 */ &&opc_fast_iload, &&opc_fast_iload2, &&opc_fast_icaload, &&opc_fast_invokevfinal,
591 /* 0xE4 */ &&opc_default, &&opc_default, &&opc_fast_aldc, &&opc_fast_aldc_w,
592 /* 0xE8 */ &&opc_return_register_finalizer,
593 &&opc_invokehandle, &&opc_nofast_getfield,&&opc_nofast_putfield,
594 /* 0xEC */ &&opc_nofast_aload_0,&&opc_nofast_iload, &&opc_default, &&opc_default,
595
596 /* 0xF0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
597 /* 0xF4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
598 /* 0xF8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
599 /* 0xFC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default
600 };
601 uintptr_t *dispatch_table = (uintptr_t*)&opclabels_data[0];
602 #endif /* USELABELS */
603
604 switch (istate->msg()) {
605 case initialize: {
606 ShouldNotCallThis();
607 return;
608 }
609 case method_entry: {
610 THREAD->set_do_not_unlock_if_synchronized(true);
611
612 // Lock method if synchronized.
613 if (METHOD->is_synchronized()) {
614 // oop rcvr = locals[0].j.r;
615 oop rcvr;
616 if (METHOD->is_static()) {
617 rcvr = METHOD->constants()->pool_holder()->java_mirror();
618 } else {
619 rcvr = LOCALS_OBJECT(0);
620 VERIFY_OOP(rcvr);
621 }
622
623 // The initial monitor is ours for the taking.
624 BasicObjectLock* mon = &istate->monitor_base()[-1];
625 mon->set_obj(rcvr);
626
627 // Traditional lightweight locking.
628 markWord displaced = rcvr->mark().set_unlocked();
629 mon->lock()->set_displaced_header(displaced);
630 bool call_vm = (LockingMode == LM_MONITOR);
631 bool inc_monitor_count = true;
632 if (call_vm || rcvr->cas_set_mark(markWord::from_pointer(mon), displaced) != displaced) {
633 // Is it simple recursive case?
634 if (!call_vm && THREAD->is_lock_owned((address) displaced.clear_lock_bits().to_pointer())) {
635 mon->lock()->set_displaced_header(markWord::from_pointer(nullptr));
636 } else {
637 inc_monitor_count = false;
638 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception);
639 }
640 }
641 if (inc_monitor_count) {
642 THREAD->inc_held_monitor_count();
643 }
644 }
645 THREAD->set_do_not_unlock_if_synchronized(false);
646
647 // Notify jvmti.
648 // Whenever JVMTI puts a thread in interp_only_mode, method
649 // entry/exit events are sent for that thread to track stack depth.
650 if (JVMTI_ENABLED && THREAD->is_interp_only_mode()) {
651 CALL_VM(InterpreterRuntime::post_method_entry(THREAD),
652 handle_exception);
653 }
654
655 goto run;
656 }
657
658 case popping_frame: {
659 // returned from a java call to pop the frame, restart the call
660 // clear the message so we don't confuse ourselves later
661 assert(THREAD->pop_frame_in_process(), "wrong frame pop state");
662 istate->set_msg(no_request);
663 THREAD->clr_pop_frame_in_process();
664 goto run;
665 }
666
667 case method_resume: {
668 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) {
669 // resume
670 os::breakpoint();
671 }
672 // returned from a java call, continue executing.
673 if (THREAD->has_pending_popframe() && !THREAD->pop_frame_in_process()) {
674 goto handle_Pop_Frame;
675 }
676 if (THREAD->jvmti_thread_state() &&
677 THREAD->jvmti_thread_state()->is_earlyret_pending()) {
678 goto handle_Early_Return;
679 }
680
681 if (THREAD->has_pending_exception()) goto handle_exception;
682 // Update the pc by the saved amount of the invoke bytecode size
683 UPDATE_PC(istate->bcp_advance());
684 goto run;
685 }
686
687 case deopt_resume2: {
688 // Returned from an opcode that will reexecute. Deopt was
689 // a result of a PopFrame request.
690 //
691 goto run;
692 }
693
694 case deopt_resume: {
695 // Returned from an opcode that has completed. The stack has
696 // the result all we need to do is skip across the bytecode
697 // and continue (assuming there is no exception pending)
698 //
699 // compute continuation length
700 //
701 // Note: it is possible to deopt at a return_register_finalizer opcode
702 // because this requires entering the vm to do the registering. While the
703 // opcode is complete we can't advance because there are no more opcodes
704 // much like trying to deopt at a poll return. In that has we simply
705 // get out of here
706 //
707 if ( Bytecodes::code_at(METHOD, pc) == Bytecodes::_return_register_finalizer) {
708 // this will do the right thing even if an exception is pending.
709 goto handle_return;
710 }
711 UPDATE_PC(Bytecodes::length_at(METHOD, pc));
712 if (THREAD->has_pending_exception()) goto handle_exception;
713 goto run;
714 }
715 case got_monitors: {
716 // continue locking now that we have a monitor to use
717 // we expect to find newly allocated monitor at the "top" of the monitor stack.
718 oop lockee = STACK_OBJECT(-1);
719 VERIFY_OOP(lockee);
720 // derefing's lockee ought to provoke implicit null check
721 // find a free monitor
722 BasicObjectLock* entry = (BasicObjectLock*) istate->stack_base();
723 assert(entry->obj() == nullptr, "Frame manager didn't allocate the monitor");
724 entry->set_obj(lockee);
725
726 // traditional lightweight locking
727 markWord displaced = lockee->mark().set_unlocked();
728 entry->lock()->set_displaced_header(displaced);
729 bool call_vm = (LockingMode == LM_MONITOR);
730 bool inc_monitor_count = true;
731 if (call_vm || lockee->cas_set_mark(markWord::from_pointer(entry), displaced) != displaced) {
732 // Is it simple recursive case?
733 if (!call_vm && THREAD->is_lock_owned((address) displaced.clear_lock_bits().to_pointer())) {
734 entry->lock()->set_displaced_header(markWord::from_pointer(nullptr));
735 } else {
736 inc_monitor_count = false;
737 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
738 }
739 }
740 if (inc_monitor_count) {
741 THREAD->inc_held_monitor_count();
742 }
743 UPDATE_PC_AND_TOS(1, -1);
744 goto run;
745 }
746 default: {
747 fatal("Unexpected message from frame manager");
748 }
749 }
750
751 run:
752
753 DO_UPDATE_INSTRUCTION_COUNT(*pc)
754 DEBUGGER_SINGLE_STEP_NOTIFY();
755 #ifdef PREFETCH_OPCCODE
756 opcode = *pc; /* prefetch first opcode */
757 #endif
758
759 #ifndef USELABELS
760 while (1)
761 #endif
762 {
763 #ifndef PREFETCH_OPCCODE
764 opcode = *pc;
765 #endif
766 // Seems like this happens twice per opcode. At worst this is only
767 // need at entry to the loop.
768 // DEBUGGER_SINGLE_STEP_NOTIFY();
769 /* Using this labels avoids double breakpoints when quickening and
770 * when returning from transition frames.
771 */
772 opcode_switch:
773 assert(istate == orig, "Corrupted istate");
774 /* QQQ Hmm this has knowledge of direction, ought to be a stack method */
775 assert(topOfStack >= istate->stack_limit(), "Stack overrun");
776 assert(topOfStack < istate->stack_base(), "Stack underrun");
777
778 #ifdef USELABELS
779 DISPATCH(opcode);
780 #else
781 switch (opcode)
782 #endif
783 {
784 CASE(_nop):
785 UPDATE_PC_AND_CONTINUE(1);
786
787 /* Push miscellaneous constants onto the stack. */
788
789 CASE(_aconst_null):
790 SET_STACK_OBJECT(nullptr, 0);
791 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
792
793 #undef OPC_CONST_n
794 #define OPC_CONST_n(opcode, const_type, value) \
795 CASE(opcode): \
796 SET_STACK_ ## const_type(value, 0); \
797 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
798
799 OPC_CONST_n(_iconst_m1, INT, -1);
800 OPC_CONST_n(_iconst_0, INT, 0);
801 OPC_CONST_n(_iconst_1, INT, 1);
802 OPC_CONST_n(_iconst_2, INT, 2);
803 OPC_CONST_n(_iconst_3, INT, 3);
804 OPC_CONST_n(_iconst_4, INT, 4);
805 OPC_CONST_n(_iconst_5, INT, 5);
806 OPC_CONST_n(_fconst_0, FLOAT, 0.0);
807 OPC_CONST_n(_fconst_1, FLOAT, 1.0);
808 OPC_CONST_n(_fconst_2, FLOAT, 2.0);
809
810 #undef OPC_CONST2_n
811 #define OPC_CONST2_n(opcname, value, key, kind) \
812 CASE(_##opcname): \
813 { \
814 SET_STACK_ ## kind(VM##key##Const##value(), 1); \
815 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \
816 }
817 OPC_CONST2_n(dconst_0, Zero, double, DOUBLE);
818 OPC_CONST2_n(dconst_1, One, double, DOUBLE);
819 OPC_CONST2_n(lconst_0, Zero, long, LONG);
820 OPC_CONST2_n(lconst_1, One, long, LONG);
821
822 /* Load constant from constant pool: */
823
824 /* Push a 1-byte signed integer value onto the stack. */
825 CASE(_bipush):
826 SET_STACK_INT((jbyte)(pc[1]), 0);
827 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
828
829 /* Push a 2-byte signed integer constant onto the stack. */
830 CASE(_sipush):
831 SET_STACK_INT((int16_t)Bytes::get_Java_u2(pc + 1), 0);
832 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1);
833
834 /* load from local variable */
835
836 CASE(_aload):
837 VERIFY_OOP(LOCALS_OBJECT(pc[1]));
838 SET_STACK_OBJECT(LOCALS_OBJECT(pc[1]), 0);
839 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
840
841 CASE(_iload):
842 {
843 if (REWRITE_BYTECODES) {
844 // Attempt to rewrite iload, iload -> fast_iload2
845 // iload, caload -> fast_icaload
846 // Normal iloads will be rewritten to fast_iload to avoid checking again.
847 switch (*(pc + 2)) {
848 case Bytecodes::_fast_iload:
849 REWRITE_AT_PC(Bytecodes::_fast_iload2);
850 break;
851 case Bytecodes::_caload:
852 REWRITE_AT_PC(Bytecodes::_fast_icaload);
853 break;
854 case Bytecodes::_iload:
855 // Wait until rewritten to _fast_iload.
856 break;
857 default:
858 // Last iload in a (potential) series, don't check again.
859 REWRITE_AT_PC(Bytecodes::_fast_iload);
860 }
861 }
862 // Normal iload handling.
863 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0);
864 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
865 }
866
867 CASE(_nofast_iload):
868 {
869 // Normal, non-rewritable iload handling.
870 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0);
871 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
872 }
873
874 CASE(_fast_iload):
875 CASE(_fload):
876 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0);
877 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
878
879 CASE(_fast_iload2):
880 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0);
881 SET_STACK_SLOT(LOCALS_SLOT(pc[3]), 1);
882 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2);
883
884 CASE(_lload):
885 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(pc[1]), 1);
886 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2);
887
888 CASE(_dload):
889 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(pc[1]), 1);
890 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2);
891
892 #undef OPC_LOAD_n
893 #define OPC_LOAD_n(num) \
894 CASE(_iload_##num): \
895 CASE(_fload_##num): \
896 SET_STACK_SLOT(LOCALS_SLOT(num), 0); \
897 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \
898 \
899 CASE(_lload_##num): \
900 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(num), 1); \
901 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \
902 CASE(_dload_##num): \
903 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(num), 1); \
904 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
905
906 OPC_LOAD_n(0);
907 OPC_LOAD_n(1);
908 OPC_LOAD_n(2);
909 OPC_LOAD_n(3);
910
911 #undef OPC_ALOAD_n
912 #define OPC_ALOAD_n(num) \
913 CASE(_aload_##num): { \
914 oop obj = LOCALS_OBJECT(num); \
915 VERIFY_OOP(obj); \
916 SET_STACK_OBJECT(obj, 0); \
917 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \
918 }
919
920 CASE(_aload_0):
921 {
922 /* Maybe rewrite if following bytecode is one of the supported _fast_Xgetfield bytecodes. */
923 if (REWRITE_BYTECODES) {
924 switch (*(pc + 1)) {
925 case Bytecodes::_fast_agetfield:
926 REWRITE_AT_PC(Bytecodes::_fast_aaccess_0);
927 break;
928 case Bytecodes::_fast_fgetfield:
929 REWRITE_AT_PC(Bytecodes::_fast_faccess_0);
930 break;
931 case Bytecodes::_fast_igetfield:
932 REWRITE_AT_PC(Bytecodes::_fast_iaccess_0);
933 break;
934 case Bytecodes::_getfield:
935 case Bytecodes::_nofast_getfield: {
936 /* Otherwise, do nothing here, wait until/if it gets rewritten to _fast_Xgetfield.
937 * Unfortunately, this punishes volatile field access, because it never gets
938 * rewritten. */
939 break;
940 }
941 default:
942 REWRITE_AT_PC(Bytecodes::_fast_aload_0);
943 break;
944 }
945 }
946 // Normal aload_0 handling.
947 VERIFY_OOP(LOCALS_OBJECT(0));
948 SET_STACK_OBJECT(LOCALS_OBJECT(0), 0);
949 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
950 }
951
952 CASE(_nofast_aload_0):
953 {
954 // Normal, non-rewritable aload_0 handling.
955 VERIFY_OOP(LOCALS_OBJECT(0));
956 SET_STACK_OBJECT(LOCALS_OBJECT(0), 0);
957 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
958 }
959
960 OPC_ALOAD_n(1);
961 OPC_ALOAD_n(2);
962 OPC_ALOAD_n(3);
963
964 /* store to a local variable */
965
966 CASE(_astore):
967 astore(topOfStack, -1, locals, pc[1]);
968 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1);
969
970 CASE(_istore):
971 CASE(_fstore):
972 SET_LOCALS_SLOT(STACK_SLOT(-1), pc[1]);
973 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1);
974
975 CASE(_lstore):
976 SET_LOCALS_LONG(STACK_LONG(-1), pc[1]);
977 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2);
978
979 CASE(_dstore):
980 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), pc[1]);
981 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2);
982
983 CASE(_wide): {
984 uint16_t reg = Bytes::get_Java_u2(pc + 2);
985
986 opcode = pc[1];
987
988 // Wide and it's sub-bytecode are counted as separate instructions. If we
989 // don't account for this here, the bytecode trace skips the next bytecode.
990 DO_UPDATE_INSTRUCTION_COUNT(opcode);
991
992 switch(opcode) {
993 case Bytecodes::_aload:
994 VERIFY_OOP(LOCALS_OBJECT(reg));
995 SET_STACK_OBJECT(LOCALS_OBJECT(reg), 0);
996 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
997
998 case Bytecodes::_iload:
999 case Bytecodes::_fload:
1000 SET_STACK_SLOT(LOCALS_SLOT(reg), 0);
1001 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
1002
1003 case Bytecodes::_lload:
1004 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(reg), 1);
1005 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2);
1006
1007 case Bytecodes::_dload:
1008 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_LONG_AT(reg), 1);
1009 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2);
1010
1011 case Bytecodes::_astore:
1012 astore(topOfStack, -1, locals, reg);
1013 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1);
1014
1015 case Bytecodes::_istore:
1016 case Bytecodes::_fstore:
1017 SET_LOCALS_SLOT(STACK_SLOT(-1), reg);
1018 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1);
1019
1020 case Bytecodes::_lstore:
1021 SET_LOCALS_LONG(STACK_LONG(-1), reg);
1022 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2);
1023
1024 case Bytecodes::_dstore:
1025 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), reg);
1026 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2);
1027
1028 case Bytecodes::_iinc: {
1029 int16_t offset = (int16_t)Bytes::get_Java_u2(pc+4);
1030 // Be nice to see what this generates.... QQQ
1031 SET_LOCALS_INT(LOCALS_INT(reg) + offset, reg);
1032 UPDATE_PC_AND_CONTINUE(6);
1033 }
1034 case Bytecodes::_ret:
1035 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(reg));
1036 UPDATE_PC_AND_CONTINUE(0);
1037 default:
1038 VM_JAVA_ERROR(vmSymbols::java_lang_InternalError(), "undefined opcode");
1039 }
1040 }
1041
1042
1043 #undef OPC_STORE_n
1044 #define OPC_STORE_n(num) \
1045 CASE(_astore_##num): \
1046 astore(topOfStack, -1, locals, num); \
1047 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1048 CASE(_istore_##num): \
1049 CASE(_fstore_##num): \
1050 SET_LOCALS_SLOT(STACK_SLOT(-1), num); \
1051 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1052
1053 OPC_STORE_n(0);
1054 OPC_STORE_n(1);
1055 OPC_STORE_n(2);
1056 OPC_STORE_n(3);
1057
1058 #undef OPC_DSTORE_n
1059 #define OPC_DSTORE_n(num) \
1060 CASE(_dstore_##num): \
1061 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), num); \
1062 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \
1063 CASE(_lstore_##num): \
1064 SET_LOCALS_LONG(STACK_LONG(-1), num); \
1065 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2);
1066
1067 OPC_DSTORE_n(0);
1068 OPC_DSTORE_n(1);
1069 OPC_DSTORE_n(2);
1070 OPC_DSTORE_n(3);
1071
1072 /* stack pop, dup, and insert opcodes */
1073
1074
1075 CASE(_pop): /* Discard the top item on the stack */
1076 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1077
1078
1079 CASE(_pop2): /* Discard the top 2 items on the stack */
1080 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2);
1081
1082
1083 CASE(_dup): /* Duplicate the top item on the stack */
1084 dup(topOfStack);
1085 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1086
1087 CASE(_dup2): /* Duplicate the top 2 items on the stack */
1088 dup2(topOfStack);
1089 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1090
1091 CASE(_dup_x1): /* insert top word two down */
1092 dup_x1(topOfStack);
1093 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1094
1095 CASE(_dup_x2): /* insert top word three down */
1096 dup_x2(topOfStack);
1097 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1098
1099 CASE(_dup2_x1): /* insert top 2 slots three down */
1100 dup2_x1(topOfStack);
1101 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1102
1103 CASE(_dup2_x2): /* insert top 2 slots four down */
1104 dup2_x2(topOfStack);
1105 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1106
1107 CASE(_swap): { /* swap top two elements on the stack */
1108 swap(topOfStack);
1109 UPDATE_PC_AND_CONTINUE(1);
1110 }
1111
1112 /* Perform various binary integer operations */
1113
1114 #undef OPC_INT_BINARY
1115 #define OPC_INT_BINARY(opcname, opname, test) \
1116 CASE(_i##opcname): \
1117 if (test && (STACK_INT(-1) == 0)) { \
1118 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \
1119 "/ by zero"); \
1120 } \
1121 SET_STACK_INT(VMint##opname(STACK_INT(-2), \
1122 STACK_INT(-1)), \
1123 -2); \
1124 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1125 CASE(_l##opcname): \
1126 { \
1127 if (test) { \
1128 jlong l1 = STACK_LONG(-1); \
1129 if (VMlongEqz(l1)) { \
1130 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \
1131 "/ by long zero"); \
1132 } \
1133 } \
1134 /* First long at (-1,-2) next long at (-3,-4) */ \
1135 SET_STACK_LONG(VMlong##opname(STACK_LONG(-3), \
1136 STACK_LONG(-1)), \
1137 -3); \
1138 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \
1139 }
1140
1141 OPC_INT_BINARY(add, Add, 0);
1142 OPC_INT_BINARY(sub, Sub, 0);
1143 OPC_INT_BINARY(mul, Mul, 0);
1144 OPC_INT_BINARY(and, And, 0);
1145 OPC_INT_BINARY(or, Or, 0);
1146 OPC_INT_BINARY(xor, Xor, 0);
1147 OPC_INT_BINARY(div, Div, 1);
1148 OPC_INT_BINARY(rem, Rem, 1);
1149
1150
1151 /* Perform various binary floating number operations */
1152 /* On some machine/platforms/compilers div zero check can be implicit */
1153
1154 #undef OPC_FLOAT_BINARY
1155 #define OPC_FLOAT_BINARY(opcname, opname) \
1156 CASE(_d##opcname): { \
1157 SET_STACK_DOUBLE(VMdouble##opname(STACK_DOUBLE(-3), \
1158 STACK_DOUBLE(-1)), \
1159 -3); \
1160 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \
1161 } \
1162 CASE(_f##opcname): \
1163 SET_STACK_FLOAT(VMfloat##opname(STACK_FLOAT(-2), \
1164 STACK_FLOAT(-1)), \
1165 -2); \
1166 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1167
1168
1169 OPC_FLOAT_BINARY(add, Add);
1170 OPC_FLOAT_BINARY(sub, Sub);
1171 OPC_FLOAT_BINARY(mul, Mul);
1172 OPC_FLOAT_BINARY(div, Div);
1173 OPC_FLOAT_BINARY(rem, Rem);
1174
1175 /* Shift operations
1176 * Shift left int and long: ishl, lshl
1177 * Logical shift right int and long w/zero extension: iushr, lushr
1178 * Arithmetic shift right int and long w/sign extension: ishr, lshr
1179 */
1180
1181 #undef OPC_SHIFT_BINARY
1182 #define OPC_SHIFT_BINARY(opcname, opname) \
1183 CASE(_i##opcname): \
1184 SET_STACK_INT(VMint##opname(STACK_INT(-2), \
1185 STACK_INT(-1)), \
1186 -2); \
1187 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1188 CASE(_l##opcname): \
1189 { \
1190 SET_STACK_LONG(VMlong##opname(STACK_LONG(-2), \
1191 STACK_INT(-1)), \
1192 -2); \
1193 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1194 }
1195
1196 OPC_SHIFT_BINARY(shl, Shl);
1197 OPC_SHIFT_BINARY(shr, Shr);
1198 OPC_SHIFT_BINARY(ushr, Ushr);
1199
1200 /* Increment local variable by constant */
1201 CASE(_iinc):
1202 {
1203 // locals[pc[1]].j.i += (jbyte)(pc[2]);
1204 SET_LOCALS_INT(LOCALS_INT(pc[1]) + (jbyte)(pc[2]), pc[1]);
1205 UPDATE_PC_AND_CONTINUE(3);
1206 }
1207
1208 /* negate the value on the top of the stack */
1209
1210 CASE(_ineg):
1211 SET_STACK_INT(VMintNeg(STACK_INT(-1)), -1);
1212 UPDATE_PC_AND_CONTINUE(1);
1213
1214 CASE(_fneg):
1215 SET_STACK_FLOAT(VMfloatNeg(STACK_FLOAT(-1)), -1);
1216 UPDATE_PC_AND_CONTINUE(1);
1217
1218 CASE(_lneg):
1219 {
1220 SET_STACK_LONG(VMlongNeg(STACK_LONG(-1)), -1);
1221 UPDATE_PC_AND_CONTINUE(1);
1222 }
1223
1224 CASE(_dneg):
1225 {
1226 SET_STACK_DOUBLE(VMdoubleNeg(STACK_DOUBLE(-1)), -1);
1227 UPDATE_PC_AND_CONTINUE(1);
1228 }
1229
1230 /* Conversion operations */
1231
1232 CASE(_i2f): /* convert top of stack int to float */
1233 SET_STACK_FLOAT(VMint2Float(STACK_INT(-1)), -1);
1234 UPDATE_PC_AND_CONTINUE(1);
1235
1236 CASE(_i2l): /* convert top of stack int to long */
1237 {
1238 // this is ugly QQQ
1239 jlong r = VMint2Long(STACK_INT(-1));
1240 MORE_STACK(-1); // Pop
1241 SET_STACK_LONG(r, 1);
1242
1243 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1244 }
1245
1246 CASE(_i2d): /* convert top of stack int to double */
1247 {
1248 // this is ugly QQQ (why cast to jlong?? )
1249 jdouble r = (jlong)STACK_INT(-1);
1250 MORE_STACK(-1); // Pop
1251 SET_STACK_DOUBLE(r, 1);
1252
1253 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1254 }
1255
1256 CASE(_l2i): /* convert top of stack long to int */
1257 {
1258 jint r = VMlong2Int(STACK_LONG(-1));
1259 MORE_STACK(-2); // Pop
1260 SET_STACK_INT(r, 0);
1261 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1262 }
1263
1264 CASE(_l2f): /* convert top of stack long to float */
1265 {
1266 jlong r = STACK_LONG(-1);
1267 MORE_STACK(-2); // Pop
1268 SET_STACK_FLOAT(VMlong2Float(r), 0);
1269 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1270 }
1271
1272 CASE(_l2d): /* convert top of stack long to double */
1273 {
1274 jlong r = STACK_LONG(-1);
1275 MORE_STACK(-2); // Pop
1276 SET_STACK_DOUBLE(VMlong2Double(r), 1);
1277 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1278 }
1279
1280 CASE(_f2i): /* Convert top of stack float to int */
1281 SET_STACK_INT(SharedRuntime::f2i(STACK_FLOAT(-1)), -1);
1282 UPDATE_PC_AND_CONTINUE(1);
1283
1284 CASE(_f2l): /* convert top of stack float to long */
1285 {
1286 jlong r = SharedRuntime::f2l(STACK_FLOAT(-1));
1287 MORE_STACK(-1); // POP
1288 SET_STACK_LONG(r, 1);
1289 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1290 }
1291
1292 CASE(_f2d): /* convert top of stack float to double */
1293 {
1294 jfloat f;
1295 jdouble r;
1296 f = STACK_FLOAT(-1);
1297 r = (jdouble) f;
1298 MORE_STACK(-1); // POP
1299 SET_STACK_DOUBLE(r, 1);
1300 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1301 }
1302
1303 CASE(_d2i): /* convert top of stack double to int */
1304 {
1305 jint r1 = SharedRuntime::d2i(STACK_DOUBLE(-1));
1306 MORE_STACK(-2);
1307 SET_STACK_INT(r1, 0);
1308 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1309 }
1310
1311 CASE(_d2f): /* convert top of stack double to float */
1312 {
1313 jfloat r1 = VMdouble2Float(STACK_DOUBLE(-1));
1314 MORE_STACK(-2);
1315 SET_STACK_FLOAT(r1, 0);
1316 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1317 }
1318
1319 CASE(_d2l): /* convert top of stack double to long */
1320 {
1321 jlong r1 = SharedRuntime::d2l(STACK_DOUBLE(-1));
1322 MORE_STACK(-2);
1323 SET_STACK_LONG(r1, 1);
1324 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1325 }
1326
1327 CASE(_i2b):
1328 SET_STACK_INT(VMint2Byte(STACK_INT(-1)), -1);
1329 UPDATE_PC_AND_CONTINUE(1);
1330
1331 CASE(_i2c):
1332 SET_STACK_INT(VMint2Char(STACK_INT(-1)), -1);
1333 UPDATE_PC_AND_CONTINUE(1);
1334
1335 CASE(_i2s):
1336 SET_STACK_INT(VMint2Short(STACK_INT(-1)), -1);
1337 UPDATE_PC_AND_CONTINUE(1);
1338
1339 /* comparison operators */
1340
1341
1342 #define COMPARISON_OP(name, comparison) \
1343 CASE(_if_icmp##name): { \
1344 int skip = (STACK_INT(-2) comparison STACK_INT(-1)) \
1345 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1346 address branch_pc = pc; \
1347 UPDATE_PC_AND_TOS(skip, -2); \
1348 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1349 CONTINUE; \
1350 } \
1351 CASE(_if##name): { \
1352 int skip = (STACK_INT(-1) comparison 0) \
1353 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1354 address branch_pc = pc; \
1355 UPDATE_PC_AND_TOS(skip, -1); \
1356 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1357 CONTINUE; \
1358 }
1359
1360 #define COMPARISON_OP2(name, comparison) \
1361 COMPARISON_OP(name, comparison) \
1362 CASE(_if_acmp##name): { \
1363 int skip = (STACK_OBJECT(-2) comparison STACK_OBJECT(-1)) \
1364 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1365 address branch_pc = pc; \
1366 UPDATE_PC_AND_TOS(skip, -2); \
1367 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1368 CONTINUE; \
1369 }
1370
1371 #define NULL_COMPARISON_NOT_OP(name) \
1372 CASE(_if##name): { \
1373 int skip = (!(STACK_OBJECT(-1) == nullptr)) \
1374 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1375 address branch_pc = pc; \
1376 UPDATE_PC_AND_TOS(skip, -1); \
1377 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1378 CONTINUE; \
1379 }
1380
1381 #define NULL_COMPARISON_OP(name) \
1382 CASE(_if##name): { \
1383 int skip = ((STACK_OBJECT(-1) == nullptr)) \
1384 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1385 address branch_pc = pc; \
1386 UPDATE_PC_AND_TOS(skip, -1); \
1387 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1388 CONTINUE; \
1389 }
1390 COMPARISON_OP(lt, <);
1391 COMPARISON_OP(gt, >);
1392 COMPARISON_OP(le, <=);
1393 COMPARISON_OP(ge, >=);
1394 COMPARISON_OP2(eq, ==); /* include ref comparison */
1395 COMPARISON_OP2(ne, !=); /* include ref comparison */
1396 NULL_COMPARISON_OP(null);
1397 NULL_COMPARISON_NOT_OP(nonnull);
1398
1399 /* Goto pc at specified offset in switch table. */
1400
1401 CASE(_tableswitch): {
1402 jint* lpc = (jint*)VMalignWordUp(pc+1);
1403 int32_t key = STACK_INT(-1);
1404 int32_t low = Bytes::get_Java_u4((address)&lpc[1]);
1405 int32_t high = Bytes::get_Java_u4((address)&lpc[2]);
1406 int32_t skip;
1407 key -= low;
1408 if (((uint32_t) key > (uint32_t)(high - low))) {
1409 skip = Bytes::get_Java_u4((address)&lpc[0]);
1410 } else {
1411 skip = Bytes::get_Java_u4((address)&lpc[key + 3]);
1412 }
1413 // Does this really need a full backedge check (osr)?
1414 address branch_pc = pc;
1415 UPDATE_PC_AND_TOS(skip, -1);
1416 DO_BACKEDGE_CHECKS(skip, branch_pc);
1417 CONTINUE;
1418 }
1419
1420 /* Goto pc whose table entry matches specified key. */
1421
1422 CASE(_lookupswitch): {
1423 jint* lpc = (jint*)VMalignWordUp(pc+1);
1424 int32_t key = STACK_INT(-1);
1425 int32_t skip = Bytes::get_Java_u4((address) lpc); /* default amount */
1426 int32_t npairs = Bytes::get_Java_u4((address) &lpc[1]);
1427 while (--npairs >= 0) {
1428 lpc += 2;
1429 if (key == (int32_t)Bytes::get_Java_u4((address)lpc)) {
1430 skip = Bytes::get_Java_u4((address)&lpc[1]);
1431 break;
1432 }
1433 }
1434 address branch_pc = pc;
1435 UPDATE_PC_AND_TOS(skip, -1);
1436 DO_BACKEDGE_CHECKS(skip, branch_pc);
1437 CONTINUE;
1438 }
1439
1440 CASE(_fcmpl):
1441 CASE(_fcmpg):
1442 {
1443 SET_STACK_INT(VMfloatCompare(STACK_FLOAT(-2),
1444 STACK_FLOAT(-1),
1445 (opcode == Bytecodes::_fcmpl ? -1 : 1)),
1446 -2);
1447 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1448 }
1449
1450 CASE(_dcmpl):
1451 CASE(_dcmpg):
1452 {
1453 int r = VMdoubleCompare(STACK_DOUBLE(-3),
1454 STACK_DOUBLE(-1),
1455 (opcode == Bytecodes::_dcmpl ? -1 : 1));
1456 MORE_STACK(-4); // Pop
1457 SET_STACK_INT(r, 0);
1458 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1459 }
1460
1461 CASE(_lcmp):
1462 {
1463 int r = VMlongCompare(STACK_LONG(-3), STACK_LONG(-1));
1464 MORE_STACK(-4);
1465 SET_STACK_INT(r, 0);
1466 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1467 }
1468
1469
1470 /* Return from a method */
1471
1472 CASE(_areturn):
1473 CASE(_ireturn):
1474 CASE(_freturn):
1475 CASE(_lreturn):
1476 CASE(_dreturn):
1477 CASE(_return): {
1478 // Allow a safepoint before returning to frame manager.
1479 RETURN_SAFEPOINT;
1480 goto handle_return;
1481 }
1482
1483 CASE(_return_register_finalizer): {
1484 oop rcvr = LOCALS_OBJECT(0);
1485 VERIFY_OOP(rcvr);
1486 if (rcvr->klass()->has_finalizer()) {
1487 CALL_VM(InterpreterRuntime::register_finalizer(THREAD, rcvr), handle_exception);
1488 }
1489 goto handle_return;
1490 }
1491
1492 /* Array access byte-codes */
1493
1494 #define ARRAY_INDEX_CHECK(arrObj, index) \
1495 /* Two integers, the additional message, and the null-terminator */ \
1496 char message[2 * jintAsStringSize + 33]; \
1497 CHECK_NULL(arrObj); \
1498 if ((uint32_t)index >= (uint32_t)arrObj->length()) { \
1499 jio_snprintf(message, sizeof(message), \
1500 "Index %d out of bounds for length %d", \
1501 index, arrObj->length()); \
1502 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), \
1503 message); \
1504 }
1505
1506 /* Every array access byte-code starts out like this */
1507 // arrayOopDesc* arrObj = (arrayOopDesc*)STACK_OBJECT(arrayOff);
1508 #define ARRAY_INTRO(arrayOff) \
1509 arrayOop arrObj = (arrayOop)STACK_OBJECT(arrayOff); \
1510 jint index = STACK_INT(arrayOff + 1); \
1511 ARRAY_INDEX_CHECK(arrObj, index)
1512
1513 /* 32-bit loads. These handle conversion from < 32-bit types */
1514 #define ARRAY_LOADTO32(T, T2, format, stackRes, extra) \
1515 { \
1516 ARRAY_INTRO(-2); \
1517 (void)extra; \
1518 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), \
1519 -2); \
1520 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1521 }
1522
1523 /* 64-bit loads */
1524 #define ARRAY_LOADTO64(T,T2, stackRes, extra) \
1525 { \
1526 ARRAY_INTRO(-2); \
1527 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), -1); \
1528 (void)extra; \
1529 UPDATE_PC_AND_CONTINUE(1); \
1530 }
1531
1532 CASE(_iaload):
1533 ARRAY_LOADTO32(T_INT, jint, "%d", STACK_INT, 0);
1534 CASE(_faload):
1535 ARRAY_LOADTO32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0);
1536 CASE(_aaload): {
1537 ARRAY_INTRO(-2);
1538 SET_STACK_OBJECT(((objArrayOop) arrObj)->obj_at(index), -2);
1539 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1540 }
1541 CASE(_baload):
1542 ARRAY_LOADTO32(T_BYTE, jbyte, "%d", STACK_INT, 0);
1543 CASE(_caload):
1544 ARRAY_LOADTO32(T_CHAR, jchar, "%d", STACK_INT, 0);
1545 CASE(_saload):
1546 ARRAY_LOADTO32(T_SHORT, jshort, "%d", STACK_INT, 0);
1547 CASE(_laload):
1548 ARRAY_LOADTO64(T_LONG, jlong, STACK_LONG, 0);
1549 CASE(_daload):
1550 ARRAY_LOADTO64(T_DOUBLE, jdouble, STACK_DOUBLE, 0);
1551
1552 CASE(_fast_icaload): {
1553 // Custom fast access for iload,caload pair.
1554 arrayOop arrObj = (arrayOop) STACK_OBJECT(-1);
1555 jint index = LOCALS_INT(pc[1]);
1556 ARRAY_INDEX_CHECK(arrObj, index);
1557 SET_STACK_INT(*(jchar *)(((address) arrObj->base(T_CHAR)) + index * sizeof(jchar)), -1);
1558 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 0);
1559 }
1560
1561 /* 32-bit stores. These handle conversion to < 32-bit types */
1562 #define ARRAY_STOREFROM32(T, T2, format, stackSrc, extra) \
1563 { \
1564 ARRAY_INTRO(-3); \
1565 (void)extra; \
1566 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \
1567 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); \
1568 }
1569
1570 /* 64-bit stores */
1571 #define ARRAY_STOREFROM64(T, T2, stackSrc, extra) \
1572 { \
1573 ARRAY_INTRO(-4); \
1574 (void)extra; \
1575 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \
1576 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -4); \
1577 }
1578
1579 CASE(_iastore):
1580 ARRAY_STOREFROM32(T_INT, jint, "%d", STACK_INT, 0);
1581 CASE(_fastore):
1582 ARRAY_STOREFROM32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0);
1583 /*
1584 * This one looks different because of the assignability check
1585 */
1586 CASE(_aastore): {
1587 oop rhsObject = STACK_OBJECT(-1);
1588 VERIFY_OOP(rhsObject);
1589 ARRAY_INTRO( -3);
1590 // arrObj, index are set
1591 if (rhsObject != nullptr) {
1592 /* Check assignability of rhsObject into arrObj */
1593 Klass* rhsKlass = rhsObject->klass(); // EBX (subclass)
1594 Klass* elemKlass = ObjArrayKlass::cast(arrObj->klass())->element_klass(); // superklass EAX
1595 //
1596 // Check for compatibility. This check must not GC!!
1597 // Seems way more expensive now that we must dispatch
1598 //
1599 if (rhsKlass != elemKlass && !rhsKlass->is_subtype_of(elemKlass)) { // ebx->is...
1600 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayStoreException(), "");
1601 }
1602 }
1603 ((objArrayOop) arrObj)->obj_at_put(index, rhsObject);
1604 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3);
1605 }
1606 CASE(_bastore): {
1607 ARRAY_INTRO(-3);
1608 int item = STACK_INT(-1);
1609 // if it is a T_BOOLEAN array, mask the stored value to 0/1
1610 if (arrObj->klass() == Universe::boolArrayKlass()) {
1611 item &= 1;
1612 } else {
1613 assert(arrObj->klass() == Universe::byteArrayKlass(),
1614 "should be byte array otherwise");
1615 }
1616 ((typeArrayOop)arrObj)->byte_at_put(index, item);
1617 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3);
1618 }
1619 CASE(_castore):
1620 ARRAY_STOREFROM32(T_CHAR, jchar, "%d", STACK_INT, 0);
1621 CASE(_sastore):
1622 ARRAY_STOREFROM32(T_SHORT, jshort, "%d", STACK_INT, 0);
1623 CASE(_lastore):
1624 ARRAY_STOREFROM64(T_LONG, jlong, STACK_LONG, 0);
1625 CASE(_dastore):
1626 ARRAY_STOREFROM64(T_DOUBLE, jdouble, STACK_DOUBLE, 0);
1627
1628 CASE(_arraylength):
1629 {
1630 arrayOop ary = (arrayOop) STACK_OBJECT(-1);
1631 CHECK_NULL(ary);
1632 SET_STACK_INT(ary->length(), -1);
1633 UPDATE_PC_AND_CONTINUE(1);
1634 }
1635
1636 /* monitorenter and monitorexit for locking/unlocking an object */
1637
1638 CASE(_monitorenter): {
1639 oop lockee = STACK_OBJECT(-1);
1640 // derefing's lockee ought to provoke implicit null check
1641 CHECK_NULL(lockee);
1642 // find a free monitor or one already allocated for this object
1643 // if we find a matching object then we need a new monitor
1644 // since this is recursive enter
1645 BasicObjectLock* limit = istate->monitor_base();
1646 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base();
1647 BasicObjectLock* entry = nullptr;
1648 while (most_recent != limit ) {
1649 if (most_recent->obj() == nullptr) entry = most_recent;
1650 else if (most_recent->obj() == lockee) break;
1651 most_recent++;
1652 }
1653 if (entry != nullptr) {
1654 entry->set_obj(lockee);
1655
1656 // traditional lightweight locking
1657 markWord displaced = lockee->mark().set_unlocked();
1658 entry->lock()->set_displaced_header(displaced);
1659 bool call_vm = (LockingMode == LM_MONITOR);
1660 bool inc_monitor_count = true;
1661 if (call_vm || lockee->cas_set_mark(markWord::from_pointer(entry), displaced) != displaced) {
1662 // Is it simple recursive case?
1663 if (!call_vm && THREAD->is_lock_owned((address) displaced.clear_lock_bits().to_pointer())) {
1664 entry->lock()->set_displaced_header(markWord::from_pointer(nullptr));
1665 } else {
1666 inc_monitor_count = false;
1667 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
1668 }
1669 }
1670 if (inc_monitor_count) {
1671 THREAD->inc_held_monitor_count();
1672 }
1673 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1674 } else {
1675 istate->set_msg(more_monitors);
1676 UPDATE_PC_AND_RETURN(0); // Re-execute
1677 }
1678 }
1679
1680 CASE(_monitorexit): {
1681 oop lockee = STACK_OBJECT(-1);
1682 CHECK_NULL(lockee);
1683 // derefing's lockee ought to provoke implicit null check
1684 // find our monitor slot
1685 BasicObjectLock* limit = istate->monitor_base();
1686 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base();
1687 while (most_recent != limit ) {
1688 if ((most_recent)->obj() == lockee) {
1689 BasicLock* lock = most_recent->lock();
1690 markWord header = lock->displaced_header();
1691 most_recent->set_obj(nullptr);
1692
1693 // If it isn't recursive we either must swap old header or call the runtime
1694 bool dec_monitor_count = true;
1695 bool call_vm = (LockingMode == LM_MONITOR);
1696 if (header.to_pointer() != nullptr || call_vm) {
1697 markWord old_header = markWord::encode(lock);
1698 if (call_vm || lockee->cas_set_mark(header, old_header) != old_header) {
1699 // restore object for the slow case
1700 most_recent->set_obj(lockee);
1701 dec_monitor_count = false;
1702 InterpreterRuntime::monitorexit(most_recent);
1703 }
1704 }
1705 if (dec_monitor_count) {
1706 THREAD->dec_held_monitor_count();
1707 }
1708 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1709 }
1710 most_recent++;
1711 }
1712 // Need to throw illegal monitor state exception
1713 CALL_VM(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD), handle_exception);
1714 ShouldNotReachHere();
1715 }
1716
1717 /* All of the non-quick opcodes. */
1718
1719 /* -Set clobbersCpIndex true if the quickened opcode clobbers the
1720 * constant pool index in the instruction.
1721 */
1722 CASE(_getfield):
1723 CASE(_nofast_getfield):
1724 CASE(_getstatic):
1725 {
1726 u2 index;
1727 index = Bytes::get_native_u2(pc+1);
1728 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
1729
1730 // QQQ Need to make this as inlined as possible. Probably need to
1731 // split all the bytecode cases out so c++ compiler has a chance
1732 // for constant prop to fold everything possible away.
1733
1734 // Interpreter runtime does not expect "nofast" opcodes,
1735 // prepare the vanilla opcode for it.
1736 Bytecodes::Code code = (Bytecodes::Code)opcode;
1737 if (code == Bytecodes::_nofast_getfield) {
1738 code = Bytecodes::_getfield;
1739 }
1740
1741 if (!entry->is_resolved(code)) {
1742 CALL_VM(InterpreterRuntime::resolve_from_cache(THREAD, code),
1743 handle_exception);
1744 entry = cp->resolved_field_entry_at(index);
1745 }
1746
1747 oop obj;
1748 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) {
1749 Klass* k = entry->field_holder();
1750 obj = k->java_mirror();
1751 MORE_STACK(1); // Assume single slot push
1752 } else {
1753 obj = STACK_OBJECT(-1);
1754 CHECK_NULL(obj);
1755 // Check if we can rewrite non-volatile _getfield to one of the _fast_Xgetfield.
1756 if (REWRITE_BYTECODES && !entry->is_volatile() &&
1757 ((Bytecodes::Code)opcode != Bytecodes::_nofast_getfield)) {
1758 // Rewrite current BC to _fast_Xgetfield.
1759 REWRITE_AT_PC(fast_get_type((TosState)(entry->tos_state())));
1760 }
1761 }
1762
1763 MAYBE_POST_FIELD_ACCESS(obj);
1764
1765 //
1766 // Now store the result on the stack
1767 //
1768 TosState tos_type = (TosState)(entry->tos_state());
1769 int field_offset = entry->field_offset();
1770 if (entry->is_volatile()) {
1771 if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
1772 OrderAccess::fence();
1773 }
1774 switch (tos_type) {
1775 case btos:
1776 case ztos:
1777 SET_STACK_INT(obj->byte_field_acquire(field_offset), -1);
1778 break;
1779 case ctos:
1780 SET_STACK_INT(obj->char_field_acquire(field_offset), -1);
1781 break;
1782 case stos:
1783 SET_STACK_INT(obj->short_field_acquire(field_offset), -1);
1784 break;
1785 case itos:
1786 SET_STACK_INT(obj->int_field_acquire(field_offset), -1);
1787 break;
1788 case ftos:
1789 SET_STACK_FLOAT(obj->float_field_acquire(field_offset), -1);
1790 break;
1791 case ltos:
1792 SET_STACK_LONG(obj->long_field_acquire(field_offset), 0);
1793 MORE_STACK(1);
1794 break;
1795 case dtos:
1796 SET_STACK_DOUBLE(obj->double_field_acquire(field_offset), 0);
1797 MORE_STACK(1);
1798 break;
1799 case atos: {
1800 oop val = obj->obj_field_acquire(field_offset);
1801 VERIFY_OOP(val);
1802 SET_STACK_OBJECT(val, -1);
1803 break;
1804 }
1805 default:
1806 ShouldNotReachHere();
1807 }
1808 } else {
1809 switch (tos_type) {
1810 case btos:
1811 case ztos:
1812 SET_STACK_INT(obj->byte_field(field_offset), -1);
1813 break;
1814 case ctos:
1815 SET_STACK_INT(obj->char_field(field_offset), -1);
1816 break;
1817 case stos:
1818 SET_STACK_INT(obj->short_field(field_offset), -1);
1819 break;
1820 case itos:
1821 SET_STACK_INT(obj->int_field(field_offset), -1);
1822 break;
1823 case ftos:
1824 SET_STACK_FLOAT(obj->float_field(field_offset), -1);
1825 break;
1826 case ltos:
1827 SET_STACK_LONG(obj->long_field(field_offset), 0);
1828 MORE_STACK(1);
1829 break;
1830 case dtos:
1831 SET_STACK_DOUBLE(obj->double_field(field_offset), 0);
1832 MORE_STACK(1);
1833 break;
1834 case atos: {
1835 oop val = obj->obj_field(field_offset);
1836 VERIFY_OOP(val);
1837 SET_STACK_OBJECT(val, -1);
1838 break;
1839 }
1840 default:
1841 ShouldNotReachHere();
1842 }
1843 }
1844
1845 UPDATE_PC_AND_CONTINUE(3);
1846 }
1847
1848 CASE(_putfield):
1849 CASE(_nofast_putfield):
1850 CASE(_putstatic):
1851 {
1852 u2 index = Bytes::get_native_u2(pc+1);
1853 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
1854
1855 // Interpreter runtime does not expect "nofast" opcodes,
1856 // prepare the vanilla opcode for it.
1857 Bytecodes::Code code = (Bytecodes::Code)opcode;
1858 if (code == Bytecodes::_nofast_putfield) {
1859 code = Bytecodes::_putfield;
1860 }
1861
1862 if (!entry->is_resolved(code)) {
1863 CALL_VM(InterpreterRuntime::resolve_from_cache(THREAD, code),
1864 handle_exception);
1865 entry = cp->resolved_field_entry_at(index);
1866 }
1867
1868 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
1869 // out so c++ compiler has a chance for constant prop to fold everything possible away.
1870
1871 oop obj;
1872 int count;
1873 TosState tos_type = (TosState)(entry->tos_state());
1874
1875 count = -1;
1876 if (tos_type == ltos || tos_type == dtos) {
1877 --count;
1878 }
1879 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) {
1880 Klass* k = entry->field_holder();
1881 obj = k->java_mirror();
1882 } else {
1883 --count;
1884 obj = STACK_OBJECT(count);
1885 CHECK_NULL(obj);
1886
1887 // Check if we can rewrite non-volatile _putfield to one of the _fast_Xputfield.
1888 if (REWRITE_BYTECODES && !entry->is_volatile() &&
1889 ((Bytecodes::Code)opcode != Bytecodes::_nofast_putfield)) {
1890 // Rewrite current BC to _fast_Xputfield.
1891 REWRITE_AT_PC(fast_put_type((TosState)(entry->tos_state())));
1892 }
1893 }
1894
1895 MAYBE_POST_FIELD_MODIFICATION(obj);
1896
1897 //
1898 // Now store the result
1899 //
1900 int field_offset = entry->field_offset();
1901 if (entry->is_volatile()) {
1902 switch (tos_type) {
1903 case ztos:
1904 obj->release_byte_field_put(field_offset, (STACK_INT(-1) & 1)); // only store LSB
1905 break;
1906 case btos:
1907 obj->release_byte_field_put(field_offset, STACK_INT(-1));
1908 break;
1909 case ctos:
1910 obj->release_char_field_put(field_offset, STACK_INT(-1));
1911 break;
1912 case stos:
1913 obj->release_short_field_put(field_offset, STACK_INT(-1));
1914 break;
1915 case itos:
1916 obj->release_int_field_put(field_offset, STACK_INT(-1));
1917 break;
1918 case ftos:
1919 obj->release_float_field_put(field_offset, STACK_FLOAT(-1));
1920 break;
1921 case ltos:
1922 obj->release_long_field_put(field_offset, STACK_LONG(-1));
1923 break;
1924 case dtos:
1925 obj->release_double_field_put(field_offset, STACK_DOUBLE(-1));
1926 break;
1927 case atos: {
1928 oop val = STACK_OBJECT(-1);
1929 VERIFY_OOP(val);
1930 obj->release_obj_field_put(field_offset, val);
1931 break;
1932 }
1933 default:
1934 ShouldNotReachHere();
1935 }
1936 OrderAccess::storeload();
1937 } else {
1938 switch (tos_type) {
1939 case ztos:
1940 obj->byte_field_put(field_offset, (STACK_INT(-1) & 1)); // only store LSB
1941 break;
1942 case btos:
1943 obj->byte_field_put(field_offset, STACK_INT(-1));
1944 break;
1945 case ctos:
1946 obj->char_field_put(field_offset, STACK_INT(-1));
1947 break;
1948 case stos:
1949 obj->short_field_put(field_offset, STACK_INT(-1));
1950 break;
1951 case itos:
1952 obj->int_field_put(field_offset, STACK_INT(-1));
1953 break;
1954 case ftos:
1955 obj->float_field_put(field_offset, STACK_FLOAT(-1));
1956 break;
1957 case ltos:
1958 obj->long_field_put(field_offset, STACK_LONG(-1));
1959 break;
1960 case dtos:
1961 obj->double_field_put(field_offset, STACK_DOUBLE(-1));
1962 break;
1963 case atos: {
1964 oop val = STACK_OBJECT(-1);
1965 VERIFY_OOP(val);
1966 obj->obj_field_put(field_offset, val);
1967 break;
1968 }
1969 default:
1970 ShouldNotReachHere();
1971 }
1972 }
1973
1974 UPDATE_PC_AND_TOS_AND_CONTINUE(3, count);
1975 }
1976
1977 CASE(_new): {
1978 u2 index = Bytes::get_Java_u2(pc+1);
1979
1980 // Attempt TLAB allocation first.
1981 //
1982 // To do this, we need to make sure:
1983 // - klass is initialized
1984 // - klass can be fastpath allocated (e.g. does not have finalizer)
1985 // - TLAB accepts the allocation
1986 ConstantPool* constants = istate->method()->constants();
1987 if (UseTLAB && !constants->tag_at(index).is_unresolved_klass()) {
1988 Klass* entry = constants->resolved_klass_at(index);
1989 InstanceKlass* ik = InstanceKlass::cast(entry);
1990 if (ik->is_initialized() && ik->can_be_fastpath_allocated()) {
1991 size_t obj_size = ik->size_helper();
1992 HeapWord* result = THREAD->tlab().allocate(obj_size);
1993 if (result != nullptr) {
1994 // Initialize object field block.
1995 if (!ZeroTLAB) {
1996 // The TLAB was not pre-zeroed, we need to clear the memory here.
1997 size_t hdr_size = oopDesc::header_size();
1998 Copy::fill_to_words(result + hdr_size, obj_size - hdr_size, 0);
1999 }
2000
2001 // Initialize header, mirrors MemAllocator.
2002 oopDesc::set_mark(result, markWord::prototype());
2003 oopDesc::set_klass_gap(result, 0);
2004 oopDesc::release_set_klass(result, ik);
2005
2006 oop obj = cast_to_oop(result);
2007
2008 // Must prevent reordering of stores for object initialization
2009 // with stores that publish the new object.
2010 OrderAccess::storestore();
2011 SET_STACK_OBJECT(obj, 0);
2012 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1);
2013 }
2014 }
2015 }
2016 // Slow case allocation
2017 CALL_VM(InterpreterRuntime::_new(THREAD, METHOD->constants(), index),
2018 handle_exception);
2019 // Must prevent reordering of stores for object initialization
2020 // with stores that publish the new object.
2021 OrderAccess::storestore();
2022 SET_STACK_OBJECT(THREAD->vm_result(), 0);
2023 THREAD->set_vm_result(nullptr);
2024 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1);
2025 }
2026 CASE(_anewarray): {
2027 u2 index = Bytes::get_Java_u2(pc+1);
2028 jint size = STACK_INT(-1);
2029 CALL_VM(InterpreterRuntime::anewarray(THREAD, METHOD->constants(), index, size),
2030 handle_exception);
2031 // Must prevent reordering of stores for object initialization
2032 // with stores that publish the new object.
2033 OrderAccess::storestore();
2034 SET_STACK_OBJECT(THREAD->vm_result(), -1);
2035 THREAD->set_vm_result(nullptr);
2036 UPDATE_PC_AND_CONTINUE(3);
2037 }
2038 CASE(_multianewarray): {
2039 jint dims = *(pc+3);
2040 jint size = STACK_INT(-1);
2041 // stack grows down, dimensions are up!
2042 jint *dimarray =
2043 (jint*)&topOfStack[dims * Interpreter::stackElementWords+
2044 Interpreter::stackElementWords-1];
2045 //adjust pointer to start of stack element
2046 CALL_VM(InterpreterRuntime::multianewarray(THREAD, dimarray),
2047 handle_exception);
2048 // Must prevent reordering of stores for object initialization
2049 // with stores that publish the new object.
2050 OrderAccess::storestore();
2051 SET_STACK_OBJECT(THREAD->vm_result(), -dims);
2052 THREAD->set_vm_result(nullptr);
2053 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -(dims-1));
2054 }
2055 CASE(_checkcast):
2056 if (STACK_OBJECT(-1) != nullptr) {
2057 VERIFY_OOP(STACK_OBJECT(-1));
2058 u2 index = Bytes::get_Java_u2(pc+1);
2059 // Constant pool may have actual klass or unresolved klass. If it is
2060 // unresolved we must resolve it.
2061 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) {
2062 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception);
2063 }
2064 Klass* klassOf = (Klass*) METHOD->constants()->resolved_klass_at(index);
2065 Klass* objKlass = STACK_OBJECT(-1)->klass(); // ebx
2066 //
2067 // Check for compatibility. This check must not GC!!
2068 // Seems way more expensive now that we must dispatch.
2069 //
2070 if (objKlass != klassOf && !objKlass->is_subtype_of(klassOf)) {
2071 ResourceMark rm(THREAD);
2072 char* message = SharedRuntime::generate_class_cast_message(
2073 objKlass, klassOf);
2074 VM_JAVA_ERROR(vmSymbols::java_lang_ClassCastException(), message);
2075 }
2076 }
2077 UPDATE_PC_AND_CONTINUE(3);
2078
2079 CASE(_instanceof):
2080 if (STACK_OBJECT(-1) == nullptr) {
2081 SET_STACK_INT(0, -1);
2082 } else {
2083 VERIFY_OOP(STACK_OBJECT(-1));
2084 u2 index = Bytes::get_Java_u2(pc+1);
2085 // Constant pool may have actual klass or unresolved klass. If it is
2086 // unresolved we must resolve it.
2087 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) {
2088 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception);
2089 }
2090 Klass* klassOf = (Klass*) METHOD->constants()->resolved_klass_at(index);
2091 Klass* objKlass = STACK_OBJECT(-1)->klass();
2092 //
2093 // Check for compatibility. This check must not GC!!
2094 // Seems way more expensive now that we must dispatch.
2095 //
2096 if ( objKlass == klassOf || objKlass->is_subtype_of(klassOf)) {
2097 SET_STACK_INT(1, -1);
2098 } else {
2099 SET_STACK_INT(0, -1);
2100 }
2101 }
2102 UPDATE_PC_AND_CONTINUE(3);
2103
2104 CASE(_ldc_w):
2105 CASE(_ldc):
2106 {
2107 u2 index;
2108 bool wide = false;
2109 int incr = 2; // frequent case
2110 if (opcode == Bytecodes::_ldc) {
2111 index = pc[1];
2112 } else {
2113 index = Bytes::get_Java_u2(pc+1);
2114 incr = 3;
2115 wide = true;
2116 }
2117
2118 ConstantPool* constants = METHOD->constants();
2119 switch (constants->tag_at(index).value()) {
2120 case JVM_CONSTANT_Integer:
2121 SET_STACK_INT(constants->int_at(index), 0);
2122 break;
2123
2124 case JVM_CONSTANT_Float:
2125 SET_STACK_FLOAT(constants->float_at(index), 0);
2126 break;
2127
2128 case JVM_CONSTANT_String:
2129 {
2130 oop result = constants->resolved_reference_at(index);
2131 if (result == nullptr) {
2132 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception);
2133 SET_STACK_OBJECT(THREAD->vm_result(), 0);
2134 THREAD->set_vm_result(nullptr);
2135 } else {
2136 VERIFY_OOP(result);
2137 SET_STACK_OBJECT(result, 0);
2138 }
2139 break;
2140 }
2141
2142 case JVM_CONSTANT_Class:
2143 VERIFY_OOP(constants->resolved_klass_at(index)->java_mirror());
2144 SET_STACK_OBJECT(constants->resolved_klass_at(index)->java_mirror(), 0);
2145 break;
2146
2147 case JVM_CONSTANT_UnresolvedClass:
2148 case JVM_CONSTANT_UnresolvedClassInError:
2149 CALL_VM(InterpreterRuntime::ldc(THREAD, wide), handle_exception);
2150 SET_STACK_OBJECT(THREAD->vm_result(), 0);
2151 THREAD->set_vm_result(nullptr);
2152 break;
2153
2154 case JVM_CONSTANT_Dynamic:
2155 case JVM_CONSTANT_DynamicInError:
2156 {
2157 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception);
2158 oop result = THREAD->vm_result();
2159 VERIFY_OOP(result);
2160
2161 jvalue value;
2162 BasicType type = java_lang_boxing_object::get_value(result, &value);
2163 switch (type) {
2164 case T_FLOAT: SET_STACK_FLOAT(value.f, 0); break;
2165 case T_INT: SET_STACK_INT(value.i, 0); break;
2166 case T_SHORT: SET_STACK_INT(value.s, 0); break;
2167 case T_BYTE: SET_STACK_INT(value.b, 0); break;
2168 case T_CHAR: SET_STACK_INT(value.c, 0); break;
2169 case T_BOOLEAN: SET_STACK_INT(value.z, 0); break;
2170 default: ShouldNotReachHere();
2171 }
2172
2173 break;
2174 }
2175
2176 default: ShouldNotReachHere();
2177 }
2178 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1);
2179 }
2180
2181 CASE(_ldc2_w):
2182 {
2183 u2 index = Bytes::get_Java_u2(pc+1);
2184
2185 ConstantPool* constants = METHOD->constants();
2186 switch (constants->tag_at(index).value()) {
2187
2188 case JVM_CONSTANT_Long:
2189 SET_STACK_LONG(constants->long_at(index), 1);
2190 break;
2191
2192 case JVM_CONSTANT_Double:
2193 SET_STACK_DOUBLE(constants->double_at(index), 1);
2194 break;
2195
2196 case JVM_CONSTANT_Dynamic:
2197 case JVM_CONSTANT_DynamicInError:
2198 {
2199 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception);
2200 oop result = THREAD->vm_result();
2201 VERIFY_OOP(result);
2202
2203 jvalue value;
2204 BasicType type = java_lang_boxing_object::get_value(result, &value);
2205 switch (type) {
2206 case T_DOUBLE: SET_STACK_DOUBLE(value.d, 1); break;
2207 case T_LONG: SET_STACK_LONG(value.j, 1); break;
2208 default: ShouldNotReachHere();
2209 }
2210
2211 break;
2212 }
2213
2214 default: ShouldNotReachHere();
2215 }
2216 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 2);
2217 }
2218
2219 CASE(_fast_aldc_w):
2220 CASE(_fast_aldc): {
2221 u2 index;
2222 int incr;
2223 if (opcode == Bytecodes::_fast_aldc) {
2224 index = pc[1];
2225 incr = 2;
2226 } else {
2227 index = Bytes::get_native_u2(pc+1);
2228 incr = 3;
2229 }
2230
2231 // We are resolved if the resolved_references array contains a non-null object (CallSite, etc.)
2232 // This kind of CP cache entry does not need to match the flags byte, because
2233 // there is a 1-1 relation between bytecode type and CP entry type.
2234 ConstantPool* constants = METHOD->constants();
2235 oop result = constants->resolved_reference_at(index);
2236 if (result == nullptr) {
2237 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode),
2238 handle_exception);
2239 result = THREAD->vm_result();
2240 }
2241 if (result == Universe::the_null_sentinel())
2242 result = nullptr;
2243
2244 VERIFY_OOP(result);
2245 SET_STACK_OBJECT(result, 0);
2246 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1);
2247 }
2248
2249 CASE(_invokedynamic): {
2250 u4 index = Bytes::get_native_u4(pc+1);
2251 ResolvedIndyEntry* indy_info = cp->resolved_indy_entry_at(index);
2252 if (!indy_info->is_resolved()) {
2253 CALL_VM(InterpreterRuntime::resolve_from_cache(THREAD, (Bytecodes::Code)opcode),
2254 handle_exception);
2255 indy_info = cp->resolved_indy_entry_at(index); // get resolved entry
2256 }
2257 Method* method = indy_info->method();
2258 if (VerifyOops) method->verify();
2259
2260 if (indy_info->has_appendix()) {
2261 constantPoolHandle cp(THREAD, METHOD->constants());
2262 SET_STACK_OBJECT(cp->resolved_reference_from_indy(index), 0);
2263 MORE_STACK(1);
2264 }
2265
2266 istate->set_msg(call_method);
2267 istate->set_callee(method);
2268 istate->set_callee_entry_point(method->from_interpreted_entry());
2269 istate->set_bcp_advance(5);
2270
2271 UPDATE_PC_AND_RETURN(0); // I'll be back...
2272 }
2273
2274 CASE(_invokehandle): {
2275
2276 u2 index = Bytes::get_native_u2(pc+1);
2277 ResolvedMethodEntry* entry = cp->resolved_method_entry_at(index);
2278
2279 if (! entry->is_resolved((Bytecodes::Code) opcode)) {
2280 CALL_VM(InterpreterRuntime::resolve_from_cache(THREAD, (Bytecodes::Code)opcode),
2281 handle_exception);
2282 entry = cp->resolved_method_entry_at(index);
2283 }
2284
2285 Method* method = entry->method();
2286 if (VerifyOops) method->verify();
2287
2288 if (entry->has_appendix()) {
2289 constantPoolHandle cp(THREAD, METHOD->constants());
2290 SET_STACK_OBJECT(cp->cache()->appendix_if_resolved(entry), 0);
2291 MORE_STACK(1);
2292 }
2293
2294 istate->set_msg(call_method);
2295 istate->set_callee(method);
2296 istate->set_callee_entry_point(method->from_interpreted_entry());
2297 istate->set_bcp_advance(3);
2298
2299 UPDATE_PC_AND_RETURN(0); // I'll be back...
2300 }
2301
2302 CASE(_invokeinterface): {
2303 u2 index = Bytes::get_native_u2(pc+1);
2304
2305 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
2306 // out so c++ compiler has a chance for constant prop to fold everything possible away.
2307
2308 ResolvedMethodEntry* entry = cp->resolved_method_entry_at(index);
2309 if (!entry->is_resolved((Bytecodes::Code)opcode)) {
2310 CALL_VM(InterpreterRuntime::resolve_from_cache(THREAD, (Bytecodes::Code)opcode),
2311 handle_exception);
2312 }
2313
2314 istate->set_msg(call_method);
2315
2316 // Special case of invokeinterface called for virtual method of
2317 // java.lang.Object. See cpCache.cpp for details.
2318 Method* callee = nullptr;
2319 if (entry->is_forced_virtual()) {
2320 CHECK_NULL(STACK_OBJECT(-(entry->number_of_parameters())));
2321 if (entry->is_vfinal()) {
2322 callee = entry->method();
2323 } else {
2324 // Get receiver.
2325 int parms = entry->number_of_parameters();
2326 // Same comments as invokevirtual apply here.
2327 oop rcvr = STACK_OBJECT(-parms);
2328 VERIFY_OOP(rcvr);
2329 Klass* rcvrKlass = rcvr->klass();
2330 callee = (Method*) rcvrKlass->method_at_vtable(entry->table_index());
2331 }
2332 } else if (entry->is_vfinal()) {
2333 // private interface method invocations
2334 //
2335 // Ensure receiver class actually implements
2336 // the resolved interface class. The link resolver
2337 // does this, but only for the first time this
2338 // interface is being called.
2339 int parms = entry->number_of_parameters();
2340 oop rcvr = STACK_OBJECT(-parms);
2341 CHECK_NULL(rcvr);
2342 Klass* recv_klass = rcvr->klass();
2343 Klass* resolved_klass = entry->interface_klass();
2344 if (!recv_klass->is_subtype_of(resolved_klass)) {
2345 ResourceMark rm(THREAD);
2346 char buf[200];
2347 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
2348 recv_klass->external_name(),
2349 resolved_klass->external_name());
2350 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
2351 }
2352 callee = entry->method();
2353 }
2354 if (callee != nullptr) {
2355 istate->set_callee(callee);
2356 istate->set_callee_entry_point(callee->from_interpreted_entry());
2357 if (JVMTI_ENABLED && THREAD->is_interp_only_mode()) {
2358 istate->set_callee_entry_point(callee->interpreter_entry());
2359 }
2360 istate->set_bcp_advance(5);
2361 UPDATE_PC_AND_RETURN(0); // I'll be back...
2362 }
2363
2364 // this could definitely be cleaned up QQQ
2365 Method *interface_method = entry->method();
2366 InstanceKlass* iclass = interface_method->method_holder();
2367
2368 // get receiver
2369 int parms = entry->number_of_parameters();
2370 oop rcvr = STACK_OBJECT(-parms);
2371 CHECK_NULL(rcvr);
2372 InstanceKlass* int2 = (InstanceKlass*) rcvr->klass();
2373
2374 // Receiver subtype check against resolved interface klass (REFC).
2375 {
2376 Klass* refc = entry->interface_klass();
2377 itableOffsetEntry* scan;
2378 for (scan = (itableOffsetEntry*) int2->start_of_itable();
2379 scan->interface_klass() != nullptr;
2380 scan++) {
2381 if (scan->interface_klass() == refc) {
2382 break;
2383 }
2384 }
2385 // Check that the entry is non-null. A null entry means
2386 // that the receiver class doesn't implement the
2387 // interface, and wasn't the same as when the caller was
2388 // compiled.
2389 if (scan->interface_klass() == nullptr) {
2390 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), "");
2391 }
2392 }
2393
2394 itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable();
2395 int i;
2396 for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) {
2397 if (ki->interface_klass() == iclass) break;
2398 }
2399 // If the interface isn't found, this class doesn't implement this
2400 // interface. The link resolver checks this but only for the first
2401 // time this interface is called.
2402 if (i == int2->itable_length()) {
2403 CALL_VM(InterpreterRuntime::throw_IncompatibleClassChangeErrorVerbose(THREAD, rcvr->klass(), iclass),
2404 handle_exception);
2405 }
2406 int mindex = interface_method->itable_index();
2407
2408 itableMethodEntry* im = ki->first_method_entry(rcvr->klass());
2409 callee = im[mindex].method();
2410 if (callee == nullptr) {
2411 CALL_VM(InterpreterRuntime::throw_AbstractMethodErrorVerbose(THREAD, rcvr->klass(), interface_method),
2412 handle_exception);
2413 }
2414
2415 istate->set_callee(callee);
2416 istate->set_callee_entry_point(callee->from_interpreted_entry());
2417 if (JVMTI_ENABLED && THREAD->is_interp_only_mode()) {
2418 istate->set_callee_entry_point(callee->interpreter_entry());
2419 }
2420 istate->set_bcp_advance(5);
2421 UPDATE_PC_AND_RETURN(0); // I'll be back...
2422 }
2423
2424 CASE(_invokevirtual):
2425 CASE(_invokespecial):
2426 CASE(_invokestatic): {
2427 u2 index = Bytes::get_native_u2(pc+1);
2428
2429 ResolvedMethodEntry* entry = cp->resolved_method_entry_at(index);
2430 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
2431 // out so c++ compiler has a chance for constant prop to fold everything possible away.
2432
2433 if (!entry->is_resolved((Bytecodes::Code)opcode)) {
2434 CALL_VM(InterpreterRuntime::resolve_from_cache(THREAD, (Bytecodes::Code)opcode),
2435 handle_exception);
2436 entry = cp->resolved_method_entry_at(index);
2437 }
2438
2439 istate->set_msg(call_method);
2440 {
2441 Method* callee;
2442 if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) {
2443 CHECK_NULL(STACK_OBJECT(-(entry->number_of_parameters())));
2444 if (entry->is_vfinal()) {
2445 callee = entry->method();
2446 if (REWRITE_BYTECODES && !CDSConfig::is_using_archive() && !CDSConfig::is_dumping_archive()) {
2447 // Rewrite to _fast_invokevfinal.
2448 REWRITE_AT_PC(Bytecodes::_fast_invokevfinal);
2449 }
2450 } else {
2451 // get receiver
2452 int parms = entry->number_of_parameters();
2453 // this works but needs a resourcemark and seems to create a vtable on every call:
2454 // Method* callee = rcvr->klass()->vtable()->method_at(cache->f2_as_index());
2455 //
2456 // this fails with an assert
2457 // InstanceKlass* rcvrKlass = InstanceKlass::cast(STACK_OBJECT(-parms)->klass());
2458 // but this works
2459 oop rcvr = STACK_OBJECT(-parms);
2460 VERIFY_OOP(rcvr);
2461 Klass* rcvrKlass = rcvr->klass();
2462 /*
2463 Executing this code in java.lang.String:
2464 public String(char value[]) {
2465 this.count = value.length;
2466 this.value = (char[])value.clone();
2467 }
2468
2469 a find on rcvr->klass() reports:
2470 {type array char}{type array class}
2471 - klass: {other class}
2472
2473 but using InstanceKlass::cast(STACK_OBJECT(-parms)->klass()) causes in assertion failure
2474 because rcvr->klass()->is_instance_klass() == 0
2475 However it seems to have a vtable in the right location. Huh?
2476 Because vtables have the same offset for ArrayKlass and InstanceKlass.
2477 */
2478 callee = (Method*) rcvrKlass->method_at_vtable(entry->table_index());
2479 }
2480 } else {
2481 if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) {
2482 CHECK_NULL(STACK_OBJECT(-(entry->number_of_parameters())));
2483 }
2484 callee = entry->method();
2485 }
2486
2487 istate->set_callee(callee);
2488 istate->set_callee_entry_point(callee->from_interpreted_entry());
2489 if (JVMTI_ENABLED && THREAD->is_interp_only_mode()) {
2490 istate->set_callee_entry_point(callee->interpreter_entry());
2491 }
2492 istate->set_bcp_advance(3);
2493 UPDATE_PC_AND_RETURN(0); // I'll be back...
2494 }
2495 }
2496
2497 /* Allocate memory for a new java object. */
2498
2499 CASE(_newarray): {
2500 BasicType atype = (BasicType) *(pc+1);
2501 jint size = STACK_INT(-1);
2502 CALL_VM(InterpreterRuntime::newarray(THREAD, atype, size),
2503 handle_exception);
2504 // Must prevent reordering of stores for object initialization
2505 // with stores that publish the new object.
2506 OrderAccess::storestore();
2507 SET_STACK_OBJECT(THREAD->vm_result(), -1);
2508 THREAD->set_vm_result(nullptr);
2509
2510 UPDATE_PC_AND_CONTINUE(2);
2511 }
2512
2513 /* Throw an exception. */
2514
2515 CASE(_athrow): {
2516 oop except_oop = STACK_OBJECT(-1);
2517 CHECK_NULL(except_oop);
2518 // set pending_exception so we use common code
2519 THREAD->set_pending_exception(except_oop, nullptr, 0);
2520 goto handle_exception;
2521 }
2522
2523 /* goto and jsr. They are exactly the same except jsr pushes
2524 * the address of the next instruction first.
2525 */
2526
2527 CASE(_jsr): {
2528 /* push bytecode index on stack */
2529 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 3), 0);
2530 MORE_STACK(1);
2531 /* FALL THROUGH */
2532 }
2533
2534 CASE(_goto):
2535 {
2536 int16_t offset = (int16_t)Bytes::get_Java_u2(pc + 1);
2537 address branch_pc = pc;
2538 UPDATE_PC(offset);
2539 DO_BACKEDGE_CHECKS(offset, branch_pc);
2540 CONTINUE;
2541 }
2542
2543 CASE(_jsr_w): {
2544 /* push return address on the stack */
2545 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 5), 0);
2546 MORE_STACK(1);
2547 /* FALL THROUGH */
2548 }
2549
2550 CASE(_goto_w):
2551 {
2552 int32_t offset = Bytes::get_Java_u4(pc + 1);
2553 address branch_pc = pc;
2554 UPDATE_PC(offset);
2555 DO_BACKEDGE_CHECKS(offset, branch_pc);
2556 CONTINUE;
2557 }
2558
2559 /* return from a jsr or jsr_w */
2560
2561 CASE(_ret): {
2562 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(pc[1]));
2563 UPDATE_PC_AND_CONTINUE(0);
2564 }
2565
2566 /* debugger breakpoint */
2567
2568 CASE(_breakpoint): {
2569 Bytecodes::Code original_bytecode;
2570 DECACHE_STATE();
2571 SET_LAST_JAVA_FRAME();
2572 original_bytecode = InterpreterRuntime::get_original_bytecode_at(THREAD,
2573 METHOD, pc);
2574 RESET_LAST_JAVA_FRAME();
2575 CACHE_STATE();
2576 if (THREAD->has_pending_exception()) goto handle_exception;
2577 CALL_VM(InterpreterRuntime::_breakpoint(THREAD, METHOD, pc),
2578 handle_exception);
2579
2580 opcode = (jubyte)original_bytecode;
2581 goto opcode_switch;
2582 }
2583
2584 CASE(_fast_agetfield): {
2585 u2 index = Bytes::get_native_u2(pc+1);
2586 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2587 int field_offset = entry->field_offset();
2588
2589 oop obj = STACK_OBJECT(-1);
2590 CHECK_NULL(obj);
2591
2592 MAYBE_POST_FIELD_ACCESS(obj);
2593
2594 VERIFY_OOP(obj->obj_field(field_offset));
2595 SET_STACK_OBJECT(obj->obj_field(field_offset), -1);
2596 UPDATE_PC_AND_CONTINUE(3);
2597 }
2598
2599 CASE(_fast_bgetfield): {
2600 u2 index = Bytes::get_native_u2(pc+1);
2601 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2602 int field_offset = entry->field_offset();
2603
2604 oop obj = STACK_OBJECT(-1);
2605 CHECK_NULL(obj);
2606
2607 MAYBE_POST_FIELD_ACCESS(obj);
2608
2609 SET_STACK_INT(obj->byte_field(field_offset), -1);
2610 UPDATE_PC_AND_CONTINUE(3);
2611 }
2612
2613 CASE(_fast_cgetfield): {
2614 u2 index = Bytes::get_native_u2(pc+1);
2615 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2616 int field_offset = entry->field_offset();
2617
2618 oop obj = STACK_OBJECT(-1);
2619 CHECK_NULL(obj);
2620
2621 MAYBE_POST_FIELD_ACCESS(obj);
2622
2623 SET_STACK_INT(obj->char_field(field_offset), -1);
2624 UPDATE_PC_AND_CONTINUE(3);
2625 }
2626
2627 CASE(_fast_dgetfield): {
2628 u2 index = Bytes::get_native_u2(pc+1);
2629 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2630 int field_offset = entry->field_offset();
2631
2632 oop obj = STACK_OBJECT(-1);
2633 CHECK_NULL(obj);
2634
2635 MAYBE_POST_FIELD_ACCESS(obj);
2636
2637 SET_STACK_DOUBLE(obj->double_field(field_offset), 0);
2638 MORE_STACK(1);
2639 UPDATE_PC_AND_CONTINUE(3);
2640 }
2641
2642 CASE(_fast_fgetfield): {
2643 u2 index = Bytes::get_native_u2(pc+1);
2644 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2645 int field_offset = entry->field_offset();
2646
2647 oop obj = STACK_OBJECT(-1);
2648 CHECK_NULL(obj);
2649
2650 MAYBE_POST_FIELD_ACCESS(obj);
2651
2652 SET_STACK_FLOAT(obj->float_field(field_offset), -1);
2653 UPDATE_PC_AND_CONTINUE(3);
2654 }
2655
2656 CASE(_fast_igetfield): {
2657 u2 index = Bytes::get_native_u2(pc+1);
2658 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2659 int field_offset = entry->field_offset();
2660
2661 oop obj = STACK_OBJECT(-1);
2662 CHECK_NULL(obj);
2663
2664 MAYBE_POST_FIELD_ACCESS(obj);
2665
2666 SET_STACK_INT(obj->int_field(field_offset), -1);
2667 UPDATE_PC_AND_CONTINUE(3);
2668 }
2669
2670 CASE(_fast_lgetfield): {
2671 u2 index = Bytes::get_native_u2(pc+1);
2672 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2673 int field_offset = entry->field_offset();
2674
2675 oop obj = STACK_OBJECT(-1);
2676 CHECK_NULL(obj);
2677
2678 MAYBE_POST_FIELD_ACCESS(obj);
2679
2680 SET_STACK_LONG(obj->long_field(field_offset), 0);
2681 MORE_STACK(1);
2682 UPDATE_PC_AND_CONTINUE(3);
2683 }
2684
2685 CASE(_fast_sgetfield): {
2686 u2 index = Bytes::get_native_u2(pc+1);
2687 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2688 int field_offset = entry->field_offset();
2689
2690 oop obj = STACK_OBJECT(-1);
2691 CHECK_NULL(obj);
2692
2693 MAYBE_POST_FIELD_ACCESS(obj);
2694
2695 SET_STACK_INT(obj->short_field(field_offset), -1);
2696 UPDATE_PC_AND_CONTINUE(3);
2697 }
2698
2699 CASE(_fast_aputfield): {
2700 u2 index = Bytes::get_native_u2(pc+1);
2701 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2702
2703 oop obj = STACK_OBJECT(-2);
2704 CHECK_NULL(obj);
2705
2706 MAYBE_POST_FIELD_MODIFICATION(obj);
2707
2708 int field_offset = entry->field_offset();
2709 obj->obj_field_put(field_offset, STACK_OBJECT(-1));
2710
2711 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2712 }
2713
2714 CASE(_fast_bputfield): {
2715 u2 index = Bytes::get_native_u2(pc+1);
2716 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2717
2718 oop obj = STACK_OBJECT(-2);
2719 CHECK_NULL(obj);
2720
2721 MAYBE_POST_FIELD_MODIFICATION(obj);
2722
2723 int field_offset = entry->field_offset();
2724 obj->byte_field_put(field_offset, STACK_INT(-1));
2725
2726 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2727 }
2728
2729 CASE(_fast_zputfield): {
2730 u2 index = Bytes::get_native_u2(pc+1);
2731 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2732
2733 oop obj = STACK_OBJECT(-2);
2734 CHECK_NULL(obj);
2735
2736 MAYBE_POST_FIELD_MODIFICATION(obj);
2737
2738 int field_offset = entry->field_offset();
2739 obj->byte_field_put(field_offset, (STACK_INT(-1) & 1)); // only store LSB
2740
2741 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2742 }
2743
2744 CASE(_fast_cputfield): {
2745 u2 index = Bytes::get_native_u2(pc+1);
2746 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2747
2748 oop obj = STACK_OBJECT(-2);
2749 CHECK_NULL(obj);
2750
2751 MAYBE_POST_FIELD_MODIFICATION(obj);
2752
2753 int field_offset = entry->field_offset();
2754 obj->char_field_put(field_offset, STACK_INT(-1));
2755
2756 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2757 }
2758
2759 CASE(_fast_dputfield): {
2760 u2 index = Bytes::get_native_u2(pc+1);
2761 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2762
2763 oop obj = STACK_OBJECT(-3);
2764 CHECK_NULL(obj);
2765
2766 MAYBE_POST_FIELD_MODIFICATION(obj);
2767
2768 int field_offset = entry->field_offset();
2769 obj->double_field_put(field_offset, STACK_DOUBLE(-1));
2770
2771 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -3);
2772 }
2773
2774 CASE(_fast_fputfield): {
2775 u2 index = Bytes::get_native_u2(pc+1);
2776 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2777
2778 oop obj = STACK_OBJECT(-2);
2779 CHECK_NULL(obj);
2780
2781 MAYBE_POST_FIELD_MODIFICATION(obj);
2782
2783 int field_offset = entry->field_offset();
2784 obj->float_field_put(field_offset, STACK_FLOAT(-1));
2785
2786 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2787 }
2788
2789 CASE(_fast_iputfield): {
2790 u2 index = Bytes::get_native_u2(pc+1);
2791 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2792
2793 oop obj = STACK_OBJECT(-2);
2794 CHECK_NULL(obj);
2795
2796 MAYBE_POST_FIELD_MODIFICATION(obj);
2797
2798 int field_offset = entry->field_offset();
2799 obj->int_field_put(field_offset, STACK_INT(-1));
2800
2801 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2802 }
2803
2804 CASE(_fast_lputfield): {
2805 u2 index = Bytes::get_native_u2(pc+1);
2806 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2807
2808 oop obj = STACK_OBJECT(-3);
2809 CHECK_NULL(obj);
2810
2811 MAYBE_POST_FIELD_MODIFICATION(obj);
2812
2813 int field_offset = entry->field_offset();
2814 obj->long_field_put(field_offset, STACK_LONG(-1));
2815
2816 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -3);
2817 }
2818
2819 CASE(_fast_sputfield): {
2820 u2 index = Bytes::get_native_u2(pc+1);
2821 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2822
2823 oop obj = STACK_OBJECT(-2);
2824 CHECK_NULL(obj);
2825
2826 MAYBE_POST_FIELD_MODIFICATION(obj);
2827
2828 int field_offset = entry->field_offset();
2829 obj->short_field_put(field_offset, STACK_INT(-1));
2830
2831 UPDATE_PC_AND_TOS_AND_CONTINUE(3, -2);
2832 }
2833
2834 CASE(_fast_aload_0): {
2835 oop obj = LOCALS_OBJECT(0);
2836 VERIFY_OOP(obj);
2837 SET_STACK_OBJECT(obj, 0);
2838 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
2839 }
2840
2841 CASE(_fast_aaccess_0): {
2842 u2 index = Bytes::get_native_u2(pc+2);
2843 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2844 int field_offset = entry->field_offset();
2845
2846 oop obj = LOCALS_OBJECT(0);
2847 CHECK_NULL(obj);
2848 VERIFY_OOP(obj);
2849
2850 MAYBE_POST_FIELD_ACCESS(obj);
2851
2852 VERIFY_OOP(obj->obj_field(field_offset));
2853 SET_STACK_OBJECT(obj->obj_field(field_offset), 0);
2854 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
2855 }
2856
2857 CASE(_fast_iaccess_0): {
2858 u2 index = Bytes::get_native_u2(pc+2);
2859 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2860 int field_offset = entry->field_offset();
2861
2862 oop obj = LOCALS_OBJECT(0);
2863 CHECK_NULL(obj);
2864 VERIFY_OOP(obj);
2865
2866 MAYBE_POST_FIELD_ACCESS(obj);
2867
2868 SET_STACK_INT(obj->int_field(field_offset), 0);
2869 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
2870 }
2871
2872 CASE(_fast_faccess_0): {
2873 u2 index = Bytes::get_native_u2(pc+2);
2874 ResolvedFieldEntry* entry = cp->resolved_field_entry_at(index);
2875 int field_offset = entry->field_offset();
2876
2877 oop obj = LOCALS_OBJECT(0);
2878 CHECK_NULL(obj);
2879 VERIFY_OOP(obj);
2880
2881 MAYBE_POST_FIELD_ACCESS(obj);
2882
2883 SET_STACK_FLOAT(obj->float_field(field_offset), 0);
2884 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
2885 }
2886
2887 CASE(_fast_invokevfinal): {
2888 u2 index = Bytes::get_native_u2(pc+1);
2889 ResolvedMethodEntry* entry = cp->resolved_method_entry_at(index);
2890
2891 assert(entry->is_resolved(Bytecodes::_invokevirtual), "Should be resolved before rewriting");
2892
2893 istate->set_msg(call_method);
2894
2895 CHECK_NULL(STACK_OBJECT(-(entry->number_of_parameters())));
2896 Method* callee = entry->method();
2897 istate->set_callee(callee);
2898 if (JVMTI_ENABLED && THREAD->is_interp_only_mode()) {
2899 istate->set_callee_entry_point(callee->interpreter_entry());
2900 } else {
2901 istate->set_callee_entry_point(callee->from_interpreted_entry());
2902 }
2903 istate->set_bcp_advance(3);
2904 UPDATE_PC_AND_RETURN(0);
2905 }
2906
2907 DEFAULT:
2908 fatal("Unimplemented opcode %d = %s", opcode,
2909 Bytecodes::name((Bytecodes::Code)opcode));
2910 goto finish;
2911
2912 } /* switch(opc) */
2913
2914
2915 #ifdef USELABELS
2916 check_for_exception:
2917 #endif
2918 {
2919 if (!THREAD->has_pending_exception()) {
2920 CONTINUE;
2921 }
2922 /* We will be gcsafe soon, so flush our state. */
2923 DECACHE_PC();
2924 goto handle_exception;
2925 }
2926 do_continue: ;
2927
2928 } /* while (1) interpreter loop */
2929
2930
2931 // An exception exists in the thread state see whether this activation can handle it
2932 handle_exception: {
2933
2934 HandleMarkCleaner __hmc(THREAD);
2935 Handle except_oop(THREAD, THREAD->pending_exception());
2936 // Prevent any subsequent HandleMarkCleaner in the VM
2937 // from freeing the except_oop handle.
2938 HandleMark __hm(THREAD);
2939
2940 THREAD->clear_pending_exception();
2941 assert(except_oop() != nullptr, "No exception to process");
2942 intptr_t continuation_bci;
2943 // expression stack is emptied
2944 topOfStack = istate->stack_base() - Interpreter::stackElementWords;
2945 CALL_VM(continuation_bci = (intptr_t)InterpreterRuntime::exception_handler_for_exception(THREAD, except_oop()),
2946 handle_exception);
2947
2948 except_oop = Handle(THREAD, THREAD->vm_result());
2949 THREAD->set_vm_result(nullptr);
2950 if (continuation_bci >= 0) {
2951 // Place exception on top of stack
2952 SET_STACK_OBJECT(except_oop(), 0);
2953 MORE_STACK(1);
2954 pc = METHOD->code_base() + continuation_bci;
2955 if (log_is_enabled(Info, exceptions)) {
2956 ResourceMark rm(THREAD);
2957 stringStream tempst;
2958 tempst.print("interpreter method <%s>\n"
2959 " at bci %d, continuing at %d for thread " INTPTR_FORMAT,
2960 METHOD->print_value_string(),
2961 (int)(istate->bcp() - METHOD->code_base()),
2962 (int)continuation_bci, p2i(THREAD));
2963 Exceptions::log_exception(except_oop, tempst.as_string());
2964 }
2965 // for AbortVMOnException flag
2966 Exceptions::debug_check_abort(except_oop);
2967 goto run;
2968 }
2969 if (log_is_enabled(Info, exceptions)) {
2970 ResourceMark rm;
2971 stringStream tempst;
2972 tempst.print("interpreter method <%s>\n"
2973 " at bci %d, unwinding for thread " INTPTR_FORMAT,
2974 METHOD->print_value_string(),
2975 (int)(istate->bcp() - METHOD->code_base()),
2976 p2i(THREAD));
2977 Exceptions::log_exception(except_oop, tempst.as_string());
2978 }
2979 // for AbortVMOnException flag
2980 Exceptions::debug_check_abort(except_oop);
2981
2982 // No handler in this activation, unwind and try again
2983 THREAD->set_pending_exception(except_oop(), nullptr, 0);
2984 goto handle_return;
2985 } // handle_exception:
2986
2987 // Return from an interpreter invocation with the result of the interpretation
2988 // on the top of the Java Stack (or a pending exception)
2989
2990 handle_Pop_Frame: {
2991
2992 // We don't really do anything special here except we must be aware
2993 // that we can get here without ever locking the method (if sync).
2994 // Also we skip the notification of the exit.
2995
2996 istate->set_msg(popping_frame);
2997 // Clear pending so while the pop is in process
2998 // we don't start another one if a call_vm is done.
2999 THREAD->clear_popframe_condition();
3000 // Let interpreter (only) see the we're in the process of popping a frame
3001 THREAD->set_pop_frame_in_process();
3002
3003 goto handle_return;
3004
3005 } // handle_Pop_Frame
3006
3007 // ForceEarlyReturn ends a method, and returns to the caller with a return value
3008 // given by the invoker of the early return.
3009 handle_Early_Return: {
3010
3011 istate->set_msg(early_return);
3012
3013 // Clear expression stack.
3014 topOfStack = istate->stack_base() - Interpreter::stackElementWords;
3015
3016 JvmtiThreadState *ts = THREAD->jvmti_thread_state();
3017
3018 // Push the value to be returned.
3019 switch (istate->method()->result_type()) {
3020 case T_BOOLEAN:
3021 case T_SHORT:
3022 case T_BYTE:
3023 case T_CHAR:
3024 case T_INT:
3025 SET_STACK_INT(ts->earlyret_value().i, 0);
3026 MORE_STACK(1);
3027 break;
3028 case T_LONG:
3029 SET_STACK_LONG(ts->earlyret_value().j, 1);
3030 MORE_STACK(2);
3031 break;
3032 case T_FLOAT:
3033 SET_STACK_FLOAT(ts->earlyret_value().f, 0);
3034 MORE_STACK(1);
3035 break;
3036 case T_DOUBLE:
3037 SET_STACK_DOUBLE(ts->earlyret_value().d, 1);
3038 MORE_STACK(2);
3039 break;
3040 case T_ARRAY:
3041 case T_OBJECT:
3042 SET_STACK_OBJECT(ts->earlyret_oop(), 0);
3043 MORE_STACK(1);
3044 break;
3045 default:
3046 ShouldNotReachHere();
3047 }
3048
3049 ts->clr_earlyret_value();
3050 ts->set_earlyret_oop(nullptr);
3051 ts->clr_earlyret_pending();
3052
3053 // Fall through to handle_return.
3054
3055 } // handle_Early_Return
3056
3057 handle_return: {
3058 // A storestore barrier is required to order initialization of
3059 // final fields with publishing the reference to the object that
3060 // holds the field. Without the barrier the value of final fields
3061 // can be observed to change.
3062 OrderAccess::storestore();
3063
3064 DECACHE_STATE();
3065
3066 bool suppress_error = istate->msg() == popping_frame || istate->msg() == early_return;
3067 bool suppress_exit_event = THREAD->has_pending_exception() || istate->msg() == popping_frame;
3068 Handle original_exception(THREAD, THREAD->pending_exception());
3069 Handle illegal_state_oop(THREAD, nullptr);
3070
3071 // We'd like a HandleMark here to prevent any subsequent HandleMarkCleaner
3072 // in any following VM entries from freeing our live handles, but illegal_state_oop
3073 // isn't really allocated yet and so doesn't become live until later and
3074 // in unpredictable places. Instead we must protect the places where we enter the
3075 // VM. It would be much simpler (and safer) if we could allocate a real handle with
3076 // a null oop in it and then overwrite the oop later as needed. This isn't
3077 // unfortunately isn't possible.
3078
3079 if (THREAD->has_pending_exception()) {
3080 THREAD->clear_pending_exception();
3081 }
3082
3083 //
3084 // As far as we are concerned we have returned. If we have a pending exception
3085 // that will be returned as this invocation's result. However if we get any
3086 // exception(s) while checking monitor state one of those IllegalMonitorStateExceptions
3087 // will be our final result (i.e. monitor exception trumps a pending exception).
3088 //
3089
3090 // If we never locked the method (or really passed the point where we would have),
3091 // there is no need to unlock it (or look for other monitors), since that
3092 // could not have happened.
3093
3094 if (THREAD->do_not_unlock_if_synchronized()) {
3095
3096 // Never locked, reset the flag now because obviously any caller must
3097 // have passed their point of locking for us to have gotten here.
3098
3099 THREAD->set_do_not_unlock_if_synchronized(false);
3100 } else {
3101 // At this point we consider that we have returned. We now check that the
3102 // locks were properly block structured. If we find that they were not
3103 // used properly we will return with an illegal monitor exception.
3104 // The exception is checked by the caller not the callee since this
3105 // checking is considered to be part of the invocation and therefore
3106 // in the callers scope (JVM spec 8.13).
3107 //
3108 // Another weird thing to watch for is if the method was locked
3109 // recursively and then not exited properly. This means we must
3110 // examine all the entries in reverse time(and stack) order and
3111 // unlock as we find them. If we find the method monitor before
3112 // we are at the initial entry then we should throw an exception.
3113 // It is not clear the template based interpreter does this
3114 // correctly
3115
3116 BasicObjectLock* base = istate->monitor_base();
3117 BasicObjectLock* end = (BasicObjectLock*) istate->stack_base();
3118 bool method_unlock_needed = METHOD->is_synchronized();
3119 // We know the initial monitor was used for the method don't check that
3120 // slot in the loop
3121 if (method_unlock_needed) base--;
3122
3123 // Check all the monitors to see they are unlocked. Install exception if found to be locked.
3124 while (end < base) {
3125 oop lockee = end->obj();
3126 if (lockee != nullptr) {
3127 BasicLock* lock = end->lock();
3128 markWord header = lock->displaced_header();
3129 end->set_obj(nullptr);
3130
3131 // If it isn't recursive we either must swap old header or call the runtime
3132 bool dec_monitor_count = true;
3133 if (header.to_pointer() != nullptr) {
3134 markWord old_header = markWord::encode(lock);
3135 if (lockee->cas_set_mark(header, old_header) != old_header) {
3136 // restore object for the slow case
3137 end->set_obj(lockee);
3138 dec_monitor_count = false;
3139 InterpreterRuntime::monitorexit(end);
3140 }
3141 }
3142 if (dec_monitor_count) {
3143 THREAD->dec_held_monitor_count();
3144 }
3145
3146 // One error is plenty
3147 if (illegal_state_oop() == nullptr && !suppress_error) {
3148 {
3149 // Prevent any HandleMarkCleaner from freeing our live handles
3150 HandleMark __hm(THREAD);
3151 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD));
3152 }
3153 assert(THREAD->has_pending_exception(), "Lost our exception!");
3154 illegal_state_oop = Handle(THREAD, THREAD->pending_exception());
3155 THREAD->clear_pending_exception();
3156 }
3157 }
3158 end++;
3159 }
3160 // Unlock the method if needed
3161 if (method_unlock_needed) {
3162 if (base->obj() == nullptr) {
3163 // The method is already unlocked this is not good.
3164 if (illegal_state_oop() == nullptr && !suppress_error) {
3165 {
3166 // Prevent any HandleMarkCleaner from freeing our live handles
3167 HandleMark __hm(THREAD);
3168 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD));
3169 }
3170 assert(THREAD->has_pending_exception(), "Lost our exception!");
3171 illegal_state_oop = Handle(THREAD, THREAD->pending_exception());
3172 THREAD->clear_pending_exception();
3173 }
3174 } else {
3175 //
3176 // The initial monitor is always used for the method
3177 // However if that slot is no longer the oop for the method it was unlocked
3178 // and reused by something that wasn't unlocked!
3179 //
3180 // deopt can come in with rcvr dead because c2 knows
3181 // its value is preserved in the monitor. So we can't use locals[0] at all
3182 // and must use first monitor slot.
3183 //
3184 oop rcvr = base->obj();
3185 if (rcvr == nullptr) {
3186 if (!suppress_error) {
3187 VM_JAVA_ERROR_NO_JUMP(vmSymbols::java_lang_NullPointerException(), "");
3188 illegal_state_oop = Handle(THREAD, THREAD->pending_exception());
3189 THREAD->clear_pending_exception();
3190 }
3191 } else if (LockingMode == LM_MONITOR) {
3192 InterpreterRuntime::monitorexit(base);
3193 if (THREAD->has_pending_exception()) {
3194 if (!suppress_error) illegal_state_oop = Handle(THREAD, THREAD->pending_exception());
3195 THREAD->clear_pending_exception();
3196 }
3197 } else {
3198 BasicLock* lock = base->lock();
3199 markWord header = lock->displaced_header();
3200 base->set_obj(nullptr);
3201
3202 // If it isn't recursive we either must swap old header or call the runtime
3203 bool dec_monitor_count = true;
3204 if (header.to_pointer() != nullptr) {
3205 markWord old_header = markWord::encode(lock);
3206 if (rcvr->cas_set_mark(header, old_header) != old_header) {
3207 // restore object for the slow case
3208 base->set_obj(rcvr);
3209 dec_monitor_count = false;
3210 InterpreterRuntime::monitorexit(base);
3211 if (THREAD->has_pending_exception()) {
3212 if (!suppress_error) illegal_state_oop = Handle(THREAD, THREAD->pending_exception());
3213 THREAD->clear_pending_exception();
3214 }
3215 }
3216 }
3217 if (dec_monitor_count) {
3218 THREAD->dec_held_monitor_count();
3219 }
3220 }
3221 }
3222 }
3223 }
3224 // Clear the do_not_unlock flag now.
3225 THREAD->set_do_not_unlock_if_synchronized(false);
3226
3227 //
3228 // Notify jvmti/jvmdi
3229 //
3230 // NOTE: we do not notify a method_exit if we have a pending exception,
3231 // including an exception we generate for unlocking checks. In the former
3232 // case, JVMDI has already been notified by our call for the exception handler
3233 // and in both cases as far as JVMDI is concerned we have already returned.
3234 // If we notify it again JVMDI will be all confused about how many frames
3235 // are still on the stack (4340444).
3236 //
3237 // NOTE Further! It turns out the JVMTI spec in fact expects to see
3238 // method_exit events whenever we leave an activation unless it was done
3239 // for popframe. This is nothing like jvmdi. However we are passing the
3240 // tests at the moment (apparently because they are jvmdi based) so rather
3241 // than change this code and possibly fail tests we will leave it alone
3242 // (with this note) in anticipation of changing the vm and the tests
3243 // simultaneously.
3244
3245 suppress_exit_event = suppress_exit_event || illegal_state_oop() != nullptr;
3246
3247 // Whenever JVMTI puts a thread in interp_only_mode, method
3248 // entry/exit events are sent for that thread to track stack depth.
3249
3250 if (JVMTI_ENABLED && !suppress_exit_event && THREAD->is_interp_only_mode()) {
3251 // Prevent any HandleMarkCleaner from freeing our live handles
3252 HandleMark __hm(THREAD);
3253 CALL_VM_NOCHECK(InterpreterRuntime::post_method_exit(THREAD));
3254 }
3255
3256 //
3257 // See if we are returning any exception
3258 // A pending exception that was pending prior to a possible popping frame
3259 // overrides the popping frame.
3260 //
3261 assert(!suppress_error || (suppress_error && illegal_state_oop() == nullptr), "Error was not suppressed");
3262 if (illegal_state_oop() != nullptr || original_exception() != nullptr) {
3263 // Inform the frame manager we have no result.
3264 istate->set_msg(throwing_exception);
3265 if (illegal_state_oop() != nullptr)
3266 THREAD->set_pending_exception(illegal_state_oop(), nullptr, 0);
3267 else
3268 THREAD->set_pending_exception(original_exception(), nullptr, 0);
3269 UPDATE_PC_AND_RETURN(0);
3270 }
3271
3272 if (istate->msg() == popping_frame) {
3273 // Make it simpler on the assembly code and set the message for the frame pop.
3274 // returns
3275 if (istate->prev() == nullptr) {
3276 // We must be returning to a deoptimized frame (because popframe only happens between
3277 // two interpreted frames). We need to save the current arguments in C heap so that
3278 // the deoptimized frame when it restarts can copy the arguments to its expression
3279 // stack and re-execute the call. We also have to notify deoptimization that this
3280 // has occurred and to pick the preserved args copy them to the deoptimized frame's
3281 // java expression stack. Yuck.
3282 //
3283 THREAD->popframe_preserve_args(in_ByteSize(METHOD->size_of_parameters() * wordSize),
3284 LOCALS_SLOT(METHOD->size_of_parameters() - 1));
3285 THREAD->set_popframe_condition_bit(JavaThread::popframe_force_deopt_reexecution_bit);
3286 }
3287 } else {
3288 istate->set_msg(return_from_method);
3289 }
3290
3291 // Normal return
3292 // Advance the pc and return to frame manager
3293 UPDATE_PC_AND_RETURN(1);
3294 } /* handle_return: */
3295
3296 // This is really a fatal error return
3297
3298 finish:
3299 DECACHE_TOS();
3300 DECACHE_PC();
3301
3302 return;
3303 }
3304
3305 // This constructor should only be used to construct the object to signal
3306 // interpreter initialization. All other instances should be created by
3307 // the frame manager.
3308 BytecodeInterpreter::BytecodeInterpreter(messages msg) {
3309 if (msg != initialize) ShouldNotReachHere();
3310 _msg = msg;
3311 _self_link = this;
3312 _prev_link = nullptr;
3313 }
3314
3315 void BytecodeInterpreter::astore(intptr_t* tos, int stack_offset,
3316 intptr_t* locals, int locals_offset) {
3317 intptr_t value = tos[Interpreter::expr_index_at(-stack_offset)];
3318 locals[Interpreter::local_index_at(-locals_offset)] = value;
3319 }
3320
3321 void BytecodeInterpreter::copy_stack_slot(intptr_t *tos, int from_offset,
3322 int to_offset) {
3323 tos[Interpreter::expr_index_at(-to_offset)] =
3324 (intptr_t)tos[Interpreter::expr_index_at(-from_offset)];
3325 }
3326
3327 void BytecodeInterpreter::dup(intptr_t *tos) {
3328 copy_stack_slot(tos, -1, 0);
3329 }
3330
3331 void BytecodeInterpreter::dup2(intptr_t *tos) {
3332 copy_stack_slot(tos, -2, 0);
3333 copy_stack_slot(tos, -1, 1);
3334 }
3335
3336 void BytecodeInterpreter::dup_x1(intptr_t *tos) {
3337 /* insert top word two down */
3338 copy_stack_slot(tos, -1, 0);
3339 copy_stack_slot(tos, -2, -1);
3340 copy_stack_slot(tos, 0, -2);
3341 }
3342
3343 void BytecodeInterpreter::dup_x2(intptr_t *tos) {
3344 /* insert top word three down */
3345 copy_stack_slot(tos, -1, 0);
3346 copy_stack_slot(tos, -2, -1);
3347 copy_stack_slot(tos, -3, -2);
3348 copy_stack_slot(tos, 0, -3);
3349 }
3350 void BytecodeInterpreter::dup2_x1(intptr_t *tos) {
3351 /* insert top 2 slots three down */
3352 copy_stack_slot(tos, -1, 1);
3353 copy_stack_slot(tos, -2, 0);
3354 copy_stack_slot(tos, -3, -1);
3355 copy_stack_slot(tos, 1, -2);
3356 copy_stack_slot(tos, 0, -3);
3357 }
3358 void BytecodeInterpreter::dup2_x2(intptr_t *tos) {
3359 /* insert top 2 slots four down */
3360 copy_stack_slot(tos, -1, 1);
3361 copy_stack_slot(tos, -2, 0);
3362 copy_stack_slot(tos, -3, -1);
3363 copy_stack_slot(tos, -4, -2);
3364 copy_stack_slot(tos, 1, -3);
3365 copy_stack_slot(tos, 0, -4);
3366 }
3367
3368
3369 void BytecodeInterpreter::swap(intptr_t *tos) {
3370 // swap top two elements
3371 intptr_t val = tos[Interpreter::expr_index_at(1)];
3372 // Copy -2 entry to -1
3373 copy_stack_slot(tos, -2, -1);
3374 // Store saved -1 entry into -2
3375 tos[Interpreter::expr_index_at(2)] = val;
3376 }
3377 // --------------------------------------------------------------------------------
3378 // Non-product code
3379 #ifndef PRODUCT
3380
3381 const char* BytecodeInterpreter::C_msg(BytecodeInterpreter::messages msg) {
3382 switch (msg) {
3383 case BytecodeInterpreter::no_request: return("no_request");
3384 case BytecodeInterpreter::initialize: return("initialize");
3385 // status message to C++ interpreter
3386 case BytecodeInterpreter::method_entry: return("method_entry");
3387 case BytecodeInterpreter::method_resume: return("method_resume");
3388 case BytecodeInterpreter::got_monitors: return("got_monitors");
3389 case BytecodeInterpreter::rethrow_exception: return("rethrow_exception");
3390 // requests to frame manager from C++ interpreter
3391 case BytecodeInterpreter::call_method: return("call_method");
3392 case BytecodeInterpreter::return_from_method: return("return_from_method");
3393 case BytecodeInterpreter::more_monitors: return("more_monitors");
3394 case BytecodeInterpreter::throwing_exception: return("throwing_exception");
3395 case BytecodeInterpreter::popping_frame: return("popping_frame");
3396 case BytecodeInterpreter::do_osr: return("do_osr");
3397 // deopt
3398 case BytecodeInterpreter::deopt_resume: return("deopt_resume");
3399 case BytecodeInterpreter::deopt_resume2: return("deopt_resume2");
3400 default: return("BAD MSG");
3401 }
3402 }
3403 void
3404 BytecodeInterpreter::print() {
3405 tty->print_cr("thread: " INTPTR_FORMAT, (uintptr_t) this->_thread);
3406 tty->print_cr("bcp: " INTPTR_FORMAT, (uintptr_t) this->_bcp);
3407 tty->print_cr("locals: " INTPTR_FORMAT, (uintptr_t) this->_locals);
3408 tty->print_cr("constants: " INTPTR_FORMAT, (uintptr_t) this->_constants);
3409 {
3410 ResourceMark rm;
3411 char *method_name = _method->name_and_sig_as_C_string();
3412 tty->print_cr("method: " INTPTR_FORMAT "[ %s ]", (uintptr_t) this->_method, method_name);
3413 }
3414 tty->print_cr("stack: " INTPTR_FORMAT, (uintptr_t) this->_stack);
3415 tty->print_cr("msg: %s", C_msg(this->_msg));
3416 tty->print_cr("result_to_call._callee: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee);
3417 tty->print_cr("result_to_call._callee_entry_point: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee_entry_point);
3418 tty->print_cr("result_to_call._bcp_advance: %d ", this->_result._to_call._bcp_advance);
3419 tty->print_cr("osr._osr_buf: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_buf);
3420 tty->print_cr("osr._osr_entry: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_entry);
3421 tty->print_cr("prev_link: " INTPTR_FORMAT, (uintptr_t) this->_prev_link);
3422 tty->print_cr("native_mirror: " INTPTR_FORMAT, (uintptr_t) p2i(this->_oop_temp));
3423 tty->print_cr("stack_base: " INTPTR_FORMAT, (uintptr_t) this->_stack_base);
3424 tty->print_cr("stack_limit: " INTPTR_FORMAT, (uintptr_t) this->_stack_limit);
3425 tty->print_cr("monitor_base: " INTPTR_FORMAT, (uintptr_t) this->_monitor_base);
3426 tty->print_cr("self_link: " INTPTR_FORMAT, (uintptr_t) this->_self_link);
3427 }
3428
3429 extern "C" {
3430 void PI(uintptr_t arg) {
3431 ((BytecodeInterpreter*)arg)->print();
3432 }
3433 }
3434 #endif // PRODUCT