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src/share/vm/interpreter/bytecodeInterpreter.cpp@bfd9d884693d
src/share/vm/interpreter/bytecodeInterpreter.cpp
Wed, 03 Jul 2013 11:25:06 +0200
- author
- goetz
- date
- Wed, 03 Jul 2013 11:25:06 +0200
- changeset 6450
- bfd9d884693d
- parent 6449
- 48b178ff07b6
- child 6451
- 0014add32e54
- permissions
- -rw-r--r--
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
Reviewed-by: sspitsyn, kvn
1 /*
2 * Copyright (c) 2002, 2012, 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 */
25 // no precompiled headers
26 #include "classfile/vmSymbols.hpp"
27 #include "gc_interface/collectedHeap.hpp"
28 #include "interpreter/bytecodeHistogram.hpp"
29 #include "interpreter/bytecodeInterpreter.hpp"
30 #include "interpreter/bytecodeInterpreter.inline.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "interpreter/interpreterRuntime.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/methodCounters.hpp"
35 #include "oops/objArrayKlass.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/jvmtiExport.hpp"
38 #include "prims/jvmtiThreadState.hpp"
39 #include "runtime/biasedLocking.hpp"
40 #include "runtime/frame.inline.hpp"
41 #include "runtime/handles.inline.hpp"
42 #include "runtime/interfaceSupport.hpp"
43 #include "runtime/sharedRuntime.hpp"
44 #include "runtime/threadCritical.hpp"
45 #include "utilities/exceptions.hpp"
46 #ifdef TARGET_OS_ARCH_linux_x86
47 # include "orderAccess_linux_x86.inline.hpp"
48 #endif
49 #ifdef TARGET_OS_ARCH_linux_sparc
50 # include "orderAccess_linux_sparc.inline.hpp"
51 #endif
52 #ifdef TARGET_OS_ARCH_linux_zero
53 # include "orderAccess_linux_zero.inline.hpp"
54 #endif
55 #ifdef TARGET_OS_ARCH_solaris_x86
56 # include "orderAccess_solaris_x86.inline.hpp"
57 #endif
58 #ifdef TARGET_OS_ARCH_solaris_sparc
59 # include "orderAccess_solaris_sparc.inline.hpp"
60 #endif
61 #ifdef TARGET_OS_ARCH_windows_x86
62 # include "orderAccess_windows_x86.inline.hpp"
63 #endif
64 #ifdef TARGET_OS_ARCH_linux_arm
65 # include "orderAccess_linux_arm.inline.hpp"
66 #endif
67 #ifdef TARGET_OS_ARCH_linux_ppc
68 # include "orderAccess_linux_ppc.inline.hpp"
69 #endif
70 #ifdef TARGET_OS_ARCH_bsd_x86
71 # include "orderAccess_bsd_x86.inline.hpp"
72 #endif
73 #ifdef TARGET_OS_ARCH_bsd_zero
74 # include "orderAccess_bsd_zero.inline.hpp"
75 #endif
78 // no precompiled headers
79 #ifdef CC_INTERP
81 /*
82 * USELABELS - If using GCC, then use labels for the opcode dispatching
83 * rather -then a switch statement. This improves performance because it
84 * gives us the oportunity to have the instructions that calculate the
85 * next opcode to jump to be intermixed with the rest of the instructions
86 * that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro).
87 */
88 #undef USELABELS
89 #ifdef __GNUC__
90 /*
91 ASSERT signifies debugging. It is much easier to step thru bytecodes if we
92 don't use the computed goto approach.
93 */
94 #ifndef ASSERT
95 #define USELABELS
96 #endif
97 #endif
99 #undef CASE
100 #ifdef USELABELS
101 #define CASE(opcode) opc ## opcode
102 #define DEFAULT opc_default
103 #else
104 #define CASE(opcode) case Bytecodes:: opcode
105 #define DEFAULT default
106 #endif
108 /*
109 * PREFETCH_OPCCODE - Some compilers do better if you prefetch the next
110 * opcode before going back to the top of the while loop, rather then having
111 * the top of the while loop handle it. This provides a better opportunity
112 * for instruction scheduling. Some compilers just do this prefetch
113 * automatically. Some actually end up with worse performance if you
114 * force the prefetch. Solaris gcc seems to do better, but cc does worse.
115 */
116 #undef PREFETCH_OPCCODE
117 #define PREFETCH_OPCCODE
119 /*
120 Interpreter safepoint: it is expected that the interpreter will have no live
121 handles of its own creation live at an interpreter safepoint. Therefore we
122 run a HandleMarkCleaner and trash all handles allocated in the call chain
123 since the JavaCalls::call_helper invocation that initiated the chain.
124 There really shouldn't be any handles remaining to trash but this is cheap
125 in relation to a safepoint.
126 */
127 #define SAFEPOINT \
128 if ( SafepointSynchronize::is_synchronizing()) { \
129 { \
130 /* zap freed handles rather than GC'ing them */ \
131 HandleMarkCleaner __hmc(THREAD); \
132 } \
133 CALL_VM(SafepointSynchronize::block(THREAD), handle_exception); \
134 }
136 /*
137 * VM_JAVA_ERROR - Macro for throwing a java exception from
138 * the interpreter loop. Should really be a CALL_VM but there
139 * is no entry point to do the transition to vm so we just
140 * do it by hand here.
141 */
142 #define VM_JAVA_ERROR_NO_JUMP(name, msg) \
143 DECACHE_STATE(); \
144 SET_LAST_JAVA_FRAME(); \
145 { \
146 ThreadInVMfromJava trans(THREAD); \
147 Exceptions::_throw_msg(THREAD, __FILE__, __LINE__, name, msg); \
148 } \
149 RESET_LAST_JAVA_FRAME(); \
150 CACHE_STATE();
152 // Normal throw of a java error
153 #define VM_JAVA_ERROR(name, msg) \
154 VM_JAVA_ERROR_NO_JUMP(name, msg) \
155 goto handle_exception;
157 #ifdef PRODUCT
158 #define DO_UPDATE_INSTRUCTION_COUNT(opcode)
159 #else
160 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) \
161 { \
162 BytecodeCounter::_counter_value++; \
163 BytecodeHistogram::_counters[(Bytecodes::Code)opcode]++; \
164 if (StopInterpreterAt && StopInterpreterAt == BytecodeCounter::_counter_value) os::breakpoint(); \
165 if (TraceBytecodes) { \
166 CALL_VM((void)SharedRuntime::trace_bytecode(THREAD, 0, \
167 topOfStack[Interpreter::expr_index_at(1)], \
168 topOfStack[Interpreter::expr_index_at(2)]), \
169 handle_exception); \
170 } \
171 }
172 #endif
174 #undef DEBUGGER_SINGLE_STEP_NOTIFY
175 #ifdef VM_JVMTI
176 /* NOTE: (kbr) This macro must be called AFTER the PC has been
177 incremented. JvmtiExport::at_single_stepping_point() may cause a
178 breakpoint opcode to get inserted at the current PC to allow the
179 debugger to coalesce single-step events.
181 As a result if we call at_single_stepping_point() we refetch opcode
182 to get the current opcode. This will override any other prefetching
183 that might have occurred.
184 */
185 #define DEBUGGER_SINGLE_STEP_NOTIFY() \
186 { \
187 if (_jvmti_interp_events) { \
188 if (JvmtiExport::should_post_single_step()) { \
189 DECACHE_STATE(); \
190 SET_LAST_JAVA_FRAME(); \
191 ThreadInVMfromJava trans(THREAD); \
192 JvmtiExport::at_single_stepping_point(THREAD, \
193 istate->method(), \
194 pc); \
195 RESET_LAST_JAVA_FRAME(); \
196 CACHE_STATE(); \
197 if (THREAD->pop_frame_pending() && \
198 !THREAD->pop_frame_in_process()) { \
199 goto handle_Pop_Frame; \
200 } \
201 if (THREAD->jvmti_thread_state() && \
202 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \
203 goto handle_Early_Return; \
204 } \
205 opcode = *pc; \
206 } \
207 } \
208 }
209 #else
210 #define DEBUGGER_SINGLE_STEP_NOTIFY()
211 #endif
213 /*
214 * CONTINUE - Macro for executing the next opcode.
215 */
216 #undef CONTINUE
217 #ifdef USELABELS
218 // Have to do this dispatch this way in C++ because otherwise gcc complains about crossing an
219 // initialization (which is is the initialization of the table pointer...)
220 #define DISPATCH(opcode) goto *(void*)dispatch_table[opcode]
221 #define CONTINUE { \
222 opcode = *pc; \
223 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
224 DEBUGGER_SINGLE_STEP_NOTIFY(); \
225 DISPATCH(opcode); \
226 }
227 #else
228 #ifdef PREFETCH_OPCCODE
229 #define CONTINUE { \
230 opcode = *pc; \
231 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
232 DEBUGGER_SINGLE_STEP_NOTIFY(); \
233 continue; \
234 }
235 #else
236 #define CONTINUE { \
237 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
238 DEBUGGER_SINGLE_STEP_NOTIFY(); \
239 continue; \
240 }
241 #endif
242 #endif
245 #define UPDATE_PC(opsize) {pc += opsize; }
246 /*
247 * UPDATE_PC_AND_TOS - Macro for updating the pc and topOfStack.
248 */
249 #undef UPDATE_PC_AND_TOS
250 #define UPDATE_PC_AND_TOS(opsize, stack) \
251 {pc += opsize; MORE_STACK(stack); }
253 /*
254 * UPDATE_PC_AND_TOS_AND_CONTINUE - Macro for updating the pc and topOfStack,
255 * and executing the next opcode. It's somewhat similar to the combination
256 * of UPDATE_PC_AND_TOS and CONTINUE, but with some minor optimizations.
257 */
258 #undef UPDATE_PC_AND_TOS_AND_CONTINUE
259 #ifdef USELABELS
260 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \
261 pc += opsize; opcode = *pc; MORE_STACK(stack); \
262 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
263 DEBUGGER_SINGLE_STEP_NOTIFY(); \
264 DISPATCH(opcode); \
265 }
267 #define UPDATE_PC_AND_CONTINUE(opsize) { \
268 pc += opsize; opcode = *pc; \
269 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
270 DEBUGGER_SINGLE_STEP_NOTIFY(); \
271 DISPATCH(opcode); \
272 }
273 #else
274 #ifdef PREFETCH_OPCCODE
275 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \
276 pc += opsize; opcode = *pc; MORE_STACK(stack); \
277 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
278 DEBUGGER_SINGLE_STEP_NOTIFY(); \
279 goto do_continue; \
280 }
282 #define UPDATE_PC_AND_CONTINUE(opsize) { \
283 pc += opsize; opcode = *pc; \
284 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
285 DEBUGGER_SINGLE_STEP_NOTIFY(); \
286 goto do_continue; \
287 }
288 #else
289 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \
290 pc += opsize; MORE_STACK(stack); \
291 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
292 DEBUGGER_SINGLE_STEP_NOTIFY(); \
293 goto do_continue; \
294 }
296 #define UPDATE_PC_AND_CONTINUE(opsize) { \
297 pc += opsize; \
298 DO_UPDATE_INSTRUCTION_COUNT(opcode); \
299 DEBUGGER_SINGLE_STEP_NOTIFY(); \
300 goto do_continue; \
301 }
302 #endif /* PREFETCH_OPCCODE */
303 #endif /* USELABELS */
305 // About to call a new method, update the save the adjusted pc and return to frame manager
306 #define UPDATE_PC_AND_RETURN(opsize) \
307 DECACHE_TOS(); \
308 istate->set_bcp(pc+opsize); \
309 return;
312 #define METHOD istate->method()
313 #define GET_METHOD_COUNTERS(res) \
314 res = METHOD->method_counters(); \
315 if (res == NULL) { \
316 CALL_VM(res = InterpreterRuntime::build_method_counters(THREAD, METHOD), handle_exception); \
317 }
319 #define OSR_REQUEST(res, branch_pc) \
320 CALL_VM(res=InterpreterRuntime::frequency_counter_overflow(THREAD, branch_pc), handle_exception);
321 /*
322 * For those opcodes that need to have a GC point on a backwards branch
323 */
325 // Backedge counting is kind of strange. The asm interpreter will increment
326 // the backedge counter as a separate counter but it does it's comparisons
327 // to the sum (scaled) of invocation counter and backedge count to make
328 // a decision. Seems kind of odd to sum them together like that
330 // skip is delta from current bcp/bci for target, branch_pc is pre-branch bcp
333 #define DO_BACKEDGE_CHECKS(skip, branch_pc) \
334 if ((skip) <= 0) { \
335 MethodCounters* mcs; \
336 GET_METHOD_COUNTERS(mcs); \
337 if (UseLoopCounter) { \
338 bool do_OSR = UseOnStackReplacement; \
339 mcs->backedge_counter()->increment(); \
340 if (do_OSR) do_OSR = mcs->backedge_counter()->reached_InvocationLimit(); \
341 if (do_OSR) { \
342 nmethod* osr_nmethod; \
343 OSR_REQUEST(osr_nmethod, branch_pc); \
344 if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \
345 intptr_t* buf = SharedRuntime::OSR_migration_begin(THREAD); \
346 istate->set_msg(do_osr); \
347 istate->set_osr_buf((address)buf); \
348 istate->set_osr_entry(osr_nmethod->osr_entry()); \
349 return; \
350 } \
351 } \
352 } /* UseCompiler ... */ \
353 mcs->invocation_counter()->increment(); \
354 SAFEPOINT; \
355 }
357 /*
358 * For those opcodes that need to have a GC point on a backwards branch
359 */
361 /*
362 * Macros for caching and flushing the interpreter state. Some local
363 * variables need to be flushed out to the frame before we do certain
364 * things (like pushing frames or becomming gc safe) and some need to
365 * be recached later (like after popping a frame). We could use one
366 * macro to cache or decache everything, but this would be less then
367 * optimal because we don't always need to cache or decache everything
368 * because some things we know are already cached or decached.
369 */
370 #undef DECACHE_TOS
371 #undef CACHE_TOS
372 #undef CACHE_PREV_TOS
373 #define DECACHE_TOS() istate->set_stack(topOfStack);
375 #define CACHE_TOS() topOfStack = (intptr_t *)istate->stack();
377 #undef DECACHE_PC
378 #undef CACHE_PC
379 #define DECACHE_PC() istate->set_bcp(pc);
380 #define CACHE_PC() pc = istate->bcp();
381 #define CACHE_CP() cp = istate->constants();
382 #define CACHE_LOCALS() locals = istate->locals();
383 #undef CACHE_FRAME
384 #define CACHE_FRAME()
386 /*
387 * CHECK_NULL - Macro for throwing a NullPointerException if the object
388 * passed is a null ref.
389 * On some architectures/platforms it should be possible to do this implicitly
390 */
391 #undef CHECK_NULL
392 #define CHECK_NULL(obj_) \
393 if ((obj_) == NULL) { \
394 VM_JAVA_ERROR(vmSymbols::java_lang_NullPointerException(), ""); \
395 } \
396 VERIFY_OOP(obj_)
398 #define VMdoubleConstZero() 0.0
399 #define VMdoubleConstOne() 1.0
400 #define VMlongConstZero() (max_jlong-max_jlong)
401 #define VMlongConstOne() ((max_jlong-max_jlong)+1)
403 /*
404 * Alignment
405 */
406 #define VMalignWordUp(val) (((uintptr_t)(val) + 3) & ~3)
408 // Decache the interpreter state that interpreter modifies directly (i.e. GC is indirect mod)
409 #define DECACHE_STATE() DECACHE_PC(); DECACHE_TOS();
411 // Reload interpreter state after calling the VM or a possible GC
412 #define CACHE_STATE() \
413 CACHE_TOS(); \
414 CACHE_PC(); \
415 CACHE_CP(); \
416 CACHE_LOCALS();
418 // Call the VM don't check for pending exceptions
419 #define CALL_VM_NOCHECK(func) \
420 DECACHE_STATE(); \
421 SET_LAST_JAVA_FRAME(); \
422 func; \
423 RESET_LAST_JAVA_FRAME(); \
424 CACHE_STATE(); \
425 if (THREAD->pop_frame_pending() && \
426 !THREAD->pop_frame_in_process()) { \
427 goto handle_Pop_Frame; \
428 } \
429 if (THREAD->jvmti_thread_state() && \
430 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \
431 goto handle_Early_Return; \
432 }
434 // Call the VM and check for pending exceptions
435 #define CALL_VM(func, label) { \
436 CALL_VM_NOCHECK(func); \
437 if (THREAD->has_pending_exception()) goto label; \
438 }
440 /*
441 * BytecodeInterpreter::run(interpreterState istate)
442 * BytecodeInterpreter::runWithChecks(interpreterState istate)
443 *
444 * The real deal. This is where byte codes actually get interpreted.
445 * Basically it's a big while loop that iterates until we return from
446 * the method passed in.
447 *
448 * The runWithChecks is used if JVMTI is enabled.
449 *
450 */
451 #if defined(VM_JVMTI)
452 void
453 BytecodeInterpreter::runWithChecks(interpreterState istate) {
454 #else
455 void
456 BytecodeInterpreter::run(interpreterState istate) {
457 #endif
459 // In order to simplify some tests based on switches set at runtime
460 // we invoke the interpreter a single time after switches are enabled
461 // and set simpler to to test variables rather than method calls or complex
462 // boolean expressions.
464 static int initialized = 0;
465 static int checkit = 0;
466 static intptr_t* c_addr = NULL;
467 static intptr_t c_value;
469 if (checkit && *c_addr != c_value) {
470 os::breakpoint();
471 }
472 #ifdef VM_JVMTI
473 static bool _jvmti_interp_events = 0;
474 #endif
476 static int _compiling; // (UseCompiler || CountCompiledCalls)
478 #ifdef ASSERT
479 if (istate->_msg != initialize) {
480 // We have a problem here if we are running with a pre-hsx24 JDK (for example during bootstrap)
481 // because in that case, EnableInvokeDynamic is true by default but will be later switched off
482 // if java_lang_invoke_MethodHandle::compute_offsets() detects that the JDK only has the classes
483 // for the old JSR292 implementation.
484 // This leads to a situation where 'istate->_stack_limit' always accounts for
485 // methodOopDesc::extra_stack_entries() because it is computed in
486 // CppInterpreterGenerator::generate_compute_interpreter_state() which was generated while
487 // EnableInvokeDynamic was still true. On the other hand, istate->_method->max_stack() doesn't
488 // account for extra_stack_entries() anymore because at the time when it is called
489 // EnableInvokeDynamic was already set to false.
490 // So we have a second version of the assertion which handles the case where EnableInvokeDynamic was
491 // switched off because of the wrong classes.
492 if (EnableInvokeDynamic || FLAG_IS_CMDLINE(EnableInvokeDynamic)) {
493 assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit");
494 } else {
495 const int extra_stack_entries = Method::extra_stack_entries_for_jsr292;
496 assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + extra_stack_entries
497 + 1), "bad stack limit");
498 }
499 #ifndef SHARK
500 IA32_ONLY(assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1, "wrong"));
501 #endif // !SHARK
502 }
503 // Verify linkages.
504 interpreterState l = istate;
505 do {
506 assert(l == l->_self_link, "bad link");
507 l = l->_prev_link;
508 } while (l != NULL);
509 // Screwups with stack management usually cause us to overwrite istate
510 // save a copy so we can verify it.
511 interpreterState orig = istate;
512 #endif
514 register intptr_t* topOfStack = (intptr_t *)istate->stack(); /* access with STACK macros */
515 register address pc = istate->bcp();
516 register jubyte opcode;
517 register intptr_t* locals = istate->locals();
518 register ConstantPoolCache* cp = istate->constants(); // method()->constants()->cache()
519 #ifdef LOTS_OF_REGS
520 register JavaThread* THREAD = istate->thread();
521 #else
522 #undef THREAD
523 #define THREAD istate->thread()
524 #endif
526 #ifdef USELABELS
527 const static void* const opclabels_data[256] = {
528 /* 0x00 */ &&opc_nop, &&opc_aconst_null,&&opc_iconst_m1,&&opc_iconst_0,
529 /* 0x04 */ &&opc_iconst_1,&&opc_iconst_2, &&opc_iconst_3, &&opc_iconst_4,
530 /* 0x08 */ &&opc_iconst_5,&&opc_lconst_0, &&opc_lconst_1, &&opc_fconst_0,
531 /* 0x0C */ &&opc_fconst_1,&&opc_fconst_2, &&opc_dconst_0, &&opc_dconst_1,
533 /* 0x10 */ &&opc_bipush, &&opc_sipush, &&opc_ldc, &&opc_ldc_w,
534 /* 0x14 */ &&opc_ldc2_w, &&opc_iload, &&opc_lload, &&opc_fload,
535 /* 0x18 */ &&opc_dload, &&opc_aload, &&opc_iload_0,&&opc_iload_1,
536 /* 0x1C */ &&opc_iload_2,&&opc_iload_3,&&opc_lload_0,&&opc_lload_1,
538 /* 0x20 */ &&opc_lload_2,&&opc_lload_3,&&opc_fload_0,&&opc_fload_1,
539 /* 0x24 */ &&opc_fload_2,&&opc_fload_3,&&opc_dload_0,&&opc_dload_1,
540 /* 0x28 */ &&opc_dload_2,&&opc_dload_3,&&opc_aload_0,&&opc_aload_1,
541 /* 0x2C */ &&opc_aload_2,&&opc_aload_3,&&opc_iaload, &&opc_laload,
543 /* 0x30 */ &&opc_faload, &&opc_daload, &&opc_aaload, &&opc_baload,
544 /* 0x34 */ &&opc_caload, &&opc_saload, &&opc_istore, &&opc_lstore,
545 /* 0x38 */ &&opc_fstore, &&opc_dstore, &&opc_astore, &&opc_istore_0,
546 /* 0x3C */ &&opc_istore_1,&&opc_istore_2,&&opc_istore_3,&&opc_lstore_0,
548 /* 0x40 */ &&opc_lstore_1,&&opc_lstore_2,&&opc_lstore_3,&&opc_fstore_0,
549 /* 0x44 */ &&opc_fstore_1,&&opc_fstore_2,&&opc_fstore_3,&&opc_dstore_0,
550 /* 0x48 */ &&opc_dstore_1,&&opc_dstore_2,&&opc_dstore_3,&&opc_astore_0,
551 /* 0x4C */ &&opc_astore_1,&&opc_astore_2,&&opc_astore_3,&&opc_iastore,
553 /* 0x50 */ &&opc_lastore,&&opc_fastore,&&opc_dastore,&&opc_aastore,
554 /* 0x54 */ &&opc_bastore,&&opc_castore,&&opc_sastore,&&opc_pop,
555 /* 0x58 */ &&opc_pop2, &&opc_dup, &&opc_dup_x1, &&opc_dup_x2,
556 /* 0x5C */ &&opc_dup2, &&opc_dup2_x1,&&opc_dup2_x2,&&opc_swap,
558 /* 0x60 */ &&opc_iadd,&&opc_ladd,&&opc_fadd,&&opc_dadd,
559 /* 0x64 */ &&opc_isub,&&opc_lsub,&&opc_fsub,&&opc_dsub,
560 /* 0x68 */ &&opc_imul,&&opc_lmul,&&opc_fmul,&&opc_dmul,
561 /* 0x6C */ &&opc_idiv,&&opc_ldiv,&&opc_fdiv,&&opc_ddiv,
563 /* 0x70 */ &&opc_irem, &&opc_lrem, &&opc_frem,&&opc_drem,
564 /* 0x74 */ &&opc_ineg, &&opc_lneg, &&opc_fneg,&&opc_dneg,
565 /* 0x78 */ &&opc_ishl, &&opc_lshl, &&opc_ishr,&&opc_lshr,
566 /* 0x7C */ &&opc_iushr,&&opc_lushr,&&opc_iand,&&opc_land,
568 /* 0x80 */ &&opc_ior, &&opc_lor,&&opc_ixor,&&opc_lxor,
569 /* 0x84 */ &&opc_iinc,&&opc_i2l,&&opc_i2f, &&opc_i2d,
570 /* 0x88 */ &&opc_l2i, &&opc_l2f,&&opc_l2d, &&opc_f2i,
571 /* 0x8C */ &&opc_f2l, &&opc_f2d,&&opc_d2i, &&opc_d2l,
573 /* 0x90 */ &&opc_d2f, &&opc_i2b, &&opc_i2c, &&opc_i2s,
574 /* 0x94 */ &&opc_lcmp, &&opc_fcmpl,&&opc_fcmpg,&&opc_dcmpl,
575 /* 0x98 */ &&opc_dcmpg,&&opc_ifeq, &&opc_ifne, &&opc_iflt,
576 /* 0x9C */ &&opc_ifge, &&opc_ifgt, &&opc_ifle, &&opc_if_icmpeq,
578 /* 0xA0 */ &&opc_if_icmpne,&&opc_if_icmplt,&&opc_if_icmpge, &&opc_if_icmpgt,
579 /* 0xA4 */ &&opc_if_icmple,&&opc_if_acmpeq,&&opc_if_acmpne, &&opc_goto,
580 /* 0xA8 */ &&opc_jsr, &&opc_ret, &&opc_tableswitch,&&opc_lookupswitch,
581 /* 0xAC */ &&opc_ireturn, &&opc_lreturn, &&opc_freturn, &&opc_dreturn,
583 /* 0xB0 */ &&opc_areturn, &&opc_return, &&opc_getstatic, &&opc_putstatic,
584 /* 0xB4 */ &&opc_getfield, &&opc_putfield, &&opc_invokevirtual,&&opc_invokespecial,
585 /* 0xB8 */ &&opc_invokestatic,&&opc_invokeinterface,&&opc_invokedynamic,&&opc_new,
586 /* 0xBC */ &&opc_newarray, &&opc_anewarray, &&opc_arraylength, &&opc_athrow,
588 /* 0xC0 */ &&opc_checkcast, &&opc_instanceof, &&opc_monitorenter, &&opc_monitorexit,
589 /* 0xC4 */ &&opc_wide, &&opc_multianewarray, &&opc_ifnull, &&opc_ifnonnull,
590 /* 0xC8 */ &&opc_goto_w, &&opc_jsr_w, &&opc_breakpoint, &&opc_default,
591 /* 0xCC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
593 /* 0xD0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
594 /* 0xD4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
595 /* 0xD8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
596 /* 0xDC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
598 /* 0xE0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
599 /* 0xE4 */ &&opc_default, &&opc_fast_aldc, &&opc_fast_aldc_w, &&opc_return_register_finalizer,
600 /* 0xE8 */ &&opc_invokehandle,&&opc_default, &&opc_default, &&opc_default,
601 /* 0xEC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
603 /* 0xF0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
604 /* 0xF4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
605 /* 0xF8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default,
606 /* 0xFC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default
607 };
608 register uintptr_t *dispatch_table = (uintptr_t*)&opclabels_data[0];
609 #endif /* USELABELS */
611 #ifdef ASSERT
612 // this will trigger a VERIFY_OOP on entry
613 if (istate->msg() != initialize && ! METHOD->is_static()) {
614 oop rcvr = LOCALS_OBJECT(0);
615 VERIFY_OOP(rcvr);
616 }
617 #endif
618 // #define HACK
619 #ifdef HACK
620 bool interesting = false;
621 #endif // HACK
623 /* QQQ this should be a stack method so we don't know actual direction */
624 guarantee(istate->msg() == initialize ||
625 topOfStack >= istate->stack_limit() &&
626 topOfStack < istate->stack_base(),
627 "Stack top out of range");
629 switch (istate->msg()) {
630 case initialize: {
631 if (initialized++) ShouldNotReachHere(); // Only one initialize call
632 _compiling = (UseCompiler || CountCompiledCalls);
633 #ifdef VM_JVMTI
634 _jvmti_interp_events = JvmtiExport::can_post_interpreter_events();
635 #endif
636 return;
637 }
638 break;
639 case method_entry: {
640 THREAD->set_do_not_unlock();
641 // count invocations
642 assert(initialized, "Interpreter not initialized");
643 if (_compiling) {
644 MethodCounters* mcs;
645 GET_METHOD_COUNTERS(mcs);
646 if (ProfileInterpreter) {
647 METHOD->increment_interpreter_invocation_count(THREAD);
648 }
649 mcs->invocation_counter()->increment();
650 if (mcs->invocation_counter()->reached_InvocationLimit()) {
651 CALL_VM((void)InterpreterRuntime::frequency_counter_overflow(THREAD, NULL), handle_exception);
653 // We no longer retry on a counter overflow
655 // istate->set_msg(retry_method);
656 // THREAD->clr_do_not_unlock();
657 // return;
658 }
659 SAFEPOINT;
660 }
662 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) {
663 // initialize
664 os::breakpoint();
665 }
667 #ifdef HACK
668 {
669 ResourceMark rm;
670 char *method_name = istate->method()->name_and_sig_as_C_string();
671 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) {
672 tty->print_cr("entering: depth %d bci: %d",
673 (istate->_stack_base - istate->_stack),
674 istate->_bcp - istate->_method->code_base());
675 interesting = true;
676 }
677 }
678 #endif // HACK
681 // lock method if synchronized
682 if (METHOD->is_synchronized()) {
683 // oop rcvr = locals[0].j.r;
684 oop rcvr;
685 if (METHOD->is_static()) {
686 rcvr = METHOD->constants()->pool_holder()->java_mirror();
687 } else {
688 rcvr = LOCALS_OBJECT(0);
689 VERIFY_OOP(rcvr);
690 }
691 // The initial monitor is ours for the taking
692 // Monitor not filled in frame manager any longer as this caused race condition with biased locking.
693 BasicObjectLock* mon = &istate->monitor_base()[-1];
694 mon->set_obj(rcvr);
695 bool success = false;
696 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place;
697 markOop mark = rcvr->mark();
698 intptr_t hash = (intptr_t) markOopDesc::no_hash;
699 // Implies UseBiasedLocking.
700 if (mark->has_bias_pattern()) {
701 uintptr_t thread_ident;
702 uintptr_t anticipated_bias_locking_value;
703 thread_ident = (uintptr_t)istate->thread();
704 anticipated_bias_locking_value =
705 (((uintptr_t)rcvr->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) &
706 ~((uintptr_t) markOopDesc::age_mask_in_place);
708 if (anticipated_bias_locking_value == 0) {
709 // Already biased towards this thread, nothing to do.
710 if (PrintBiasedLockingStatistics) {
711 (* BiasedLocking::biased_lock_entry_count_addr())++;
712 }
713 success = true;
714 } else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) {
715 // Try to revoke bias.
716 markOop header = rcvr->klass()->prototype_header();
717 if (hash != markOopDesc::no_hash) {
718 header = header->copy_set_hash(hash);
719 }
720 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), mark) == mark) {
721 if (PrintBiasedLockingStatistics)
722 (*BiasedLocking::revoked_lock_entry_count_addr())++;
723 }
724 } else if ((anticipated_bias_locking_value & epoch_mask_in_place) != 0) {
725 // Try to rebias.
726 markOop new_header = (markOop) ( (intptr_t) rcvr->klass()->prototype_header() | thread_ident);
727 if (hash != markOopDesc::no_hash) {
728 new_header = new_header->copy_set_hash(hash);
729 }
730 if (Atomic::cmpxchg_ptr((void*)new_header, rcvr->mark_addr(), mark) == mark) {
731 if (PrintBiasedLockingStatistics) {
732 (* BiasedLocking::rebiased_lock_entry_count_addr())++;
733 }
734 } else {
735 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception);
736 }
737 success = true;
738 } else {
739 // Try to bias towards thread in case object is anonymously biased.
740 markOop header = (markOop) ((uintptr_t) mark &
741 ((uintptr_t)markOopDesc::biased_lock_mask_in_place |
742 (uintptr_t)markOopDesc::age_mask_in_place | epoch_mask_in_place));
743 if (hash != markOopDesc::no_hash) {
744 header = header->copy_set_hash(hash);
745 }
746 markOop new_header = (markOop) ((uintptr_t) header | thread_ident);
747 // Debugging hint.
748 DEBUG_ONLY(mon->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);)
749 if (Atomic::cmpxchg_ptr((void*)new_header, rcvr->mark_addr(), header) == header) {
750 if (PrintBiasedLockingStatistics) {
751 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++;
752 }
753 } else {
754 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception);
755 }
756 success = true;
757 }
758 }
760 // Traditional lightweight locking.
761 if (!success) {
762 markOop displaced = rcvr->mark()->set_unlocked();
763 mon->lock()->set_displaced_header(displaced);
764 bool call_vm = UseHeavyMonitors;
765 if (call_vm || Atomic::cmpxchg_ptr(mon, rcvr->mark_addr(), displaced) != displaced) {
766 // Is it simple recursive case?
767 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) {
768 mon->lock()->set_displaced_header(NULL);
769 } else {
770 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception);
771 }
772 }
773 }
774 }
775 THREAD->clr_do_not_unlock();
777 // Notify jvmti
778 #ifdef VM_JVMTI
779 if (_jvmti_interp_events) {
780 // Whenever JVMTI puts a thread in interp_only_mode, method
781 // entry/exit events are sent for that thread to track stack depth.
782 if (THREAD->is_interp_only_mode()) {
783 CALL_VM(InterpreterRuntime::post_method_entry(THREAD),
784 handle_exception);
785 }
786 }
787 #endif /* VM_JVMTI */
789 goto run;
790 }
792 case popping_frame: {
793 // returned from a java call to pop the frame, restart the call
794 // clear the message so we don't confuse ourselves later
795 assert(THREAD->pop_frame_in_process(), "wrong frame pop state");
796 istate->set_msg(no_request);
797 THREAD->clr_pop_frame_in_process();
798 goto run;
799 }
801 case method_resume: {
802 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) {
803 // resume
804 os::breakpoint();
805 }
806 #ifdef HACK
807 {
808 ResourceMark rm;
809 char *method_name = istate->method()->name_and_sig_as_C_string();
810 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) {
811 tty->print_cr("resume: depth %d bci: %d",
812 (istate->_stack_base - istate->_stack) ,
813 istate->_bcp - istate->_method->code_base());
814 interesting = true;
815 }
816 }
817 #endif // HACK
818 // returned from a java call, continue executing.
819 if (THREAD->pop_frame_pending() && !THREAD->pop_frame_in_process()) {
820 goto handle_Pop_Frame;
821 }
822 if (THREAD->jvmti_thread_state() &&
823 THREAD->jvmti_thread_state()->is_earlyret_pending()) {
824 goto handle_Early_Return;
825 }
827 if (THREAD->has_pending_exception()) goto handle_exception;
828 // Update the pc by the saved amount of the invoke bytecode size
829 UPDATE_PC(istate->bcp_advance());
830 goto run;
831 }
833 case deopt_resume2: {
834 // Returned from an opcode that will reexecute. Deopt was
835 // a result of a PopFrame request.
836 //
837 goto run;
838 }
840 case deopt_resume: {
841 // Returned from an opcode that has completed. The stack has
842 // the result all we need to do is skip across the bytecode
843 // and continue (assuming there is no exception pending)
844 //
845 // compute continuation length
846 //
847 // Note: it is possible to deopt at a return_register_finalizer opcode
848 // because this requires entering the vm to do the registering. While the
849 // opcode is complete we can't advance because there are no more opcodes
850 // much like trying to deopt at a poll return. In that has we simply
851 // get out of here
852 //
853 if ( Bytecodes::code_at(METHOD, pc) == Bytecodes::_return_register_finalizer) {
854 // this will do the right thing even if an exception is pending.
855 goto handle_return;
856 }
857 UPDATE_PC(Bytecodes::length_at(METHOD, pc));
858 if (THREAD->has_pending_exception()) goto handle_exception;
859 goto run;
860 }
861 case got_monitors: {
862 // continue locking now that we have a monitor to use
863 // we expect to find newly allocated monitor at the "top" of the monitor stack.
864 oop lockee = STACK_OBJECT(-1);
865 VERIFY_OOP(lockee);
866 // derefing's lockee ought to provoke implicit null check
867 // find a free monitor
868 BasicObjectLock* entry = (BasicObjectLock*) istate->stack_base();
869 assert(entry->obj() == NULL, "Frame manager didn't allocate the monitor");
870 entry->set_obj(lockee);
871 bool success = false;
872 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place;
874 markOop mark = lockee->mark();
875 intptr_t hash = (intptr_t) markOopDesc::no_hash;
876 // implies UseBiasedLocking
877 if (mark->has_bias_pattern()) {
878 uintptr_t thread_ident;
879 uintptr_t anticipated_bias_locking_value;
880 thread_ident = (uintptr_t)istate->thread();
881 anticipated_bias_locking_value =
882 (((uintptr_t)lockee->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) &
883 ~((uintptr_t) markOopDesc::age_mask_in_place);
885 if (anticipated_bias_locking_value == 0) {
886 // already biased towards this thread, nothing to do
887 if (PrintBiasedLockingStatistics) {
888 (* BiasedLocking::biased_lock_entry_count_addr())++;
889 }
890 success = true;
891 } else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) {
892 // try revoke bias
893 markOop header = lockee->klass()->prototype_header();
894 if (hash != markOopDesc::no_hash) {
895 header = header->copy_set_hash(hash);
896 }
897 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), mark) == mark) {
898 if (PrintBiasedLockingStatistics) {
899 (*BiasedLocking::revoked_lock_entry_count_addr())++;
900 }
901 }
902 } else if ((anticipated_bias_locking_value & epoch_mask_in_place) !=0) {
903 // try rebias
904 markOop new_header = (markOop) ( (intptr_t) lockee->klass()->prototype_header() | thread_ident);
905 if (hash != markOopDesc::no_hash) {
906 new_header = new_header->copy_set_hash(hash);
907 }
908 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), mark) == mark) {
909 if (PrintBiasedLockingStatistics) {
910 (* BiasedLocking::rebiased_lock_entry_count_addr())++;
911 }
912 } else {
913 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
914 }
915 success = true;
916 } else {
917 // try to bias towards thread in case object is anonymously biased
918 markOop header = (markOop) ((uintptr_t) mark & ((uintptr_t)markOopDesc::biased_lock_mask_in_place |
919 (uintptr_t)markOopDesc::age_mask_in_place | epoch_mask_in_place));
920 if (hash != markOopDesc::no_hash) {
921 header = header->copy_set_hash(hash);
922 }
923 markOop new_header = (markOop) ((uintptr_t) header | thread_ident);
924 // debugging hint
925 DEBUG_ONLY(entry->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);)
926 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), header) == header) {
927 if (PrintBiasedLockingStatistics) {
928 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++;
929 }
930 } else {
931 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
932 }
933 success = true;
934 }
935 }
937 // traditional lightweight locking
938 if (!success) {
939 markOop displaced = lockee->mark()->set_unlocked();
940 entry->lock()->set_displaced_header(displaced);
941 bool call_vm = UseHeavyMonitors;
942 if (call_vm || Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) {
943 // Is it simple recursive case?
944 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) {
945 entry->lock()->set_displaced_header(NULL);
946 } else {
947 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
948 }
949 }
950 }
951 UPDATE_PC_AND_TOS(1, -1);
952 goto run;
953 }
954 default: {
955 fatal("Unexpected message from frame manager");
956 }
957 }
959 run:
961 DO_UPDATE_INSTRUCTION_COUNT(*pc)
962 DEBUGGER_SINGLE_STEP_NOTIFY();
963 #ifdef PREFETCH_OPCCODE
964 opcode = *pc; /* prefetch first opcode */
965 #endif
967 #ifndef USELABELS
968 while (1)
969 #endif
970 {
971 #ifndef PREFETCH_OPCCODE
972 opcode = *pc;
973 #endif
974 // Seems like this happens twice per opcode. At worst this is only
975 // need at entry to the loop.
976 // DEBUGGER_SINGLE_STEP_NOTIFY();
977 /* Using this labels avoids double breakpoints when quickening and
978 * when returing from transition frames.
979 */
980 opcode_switch:
981 assert(istate == orig, "Corrupted istate");
982 /* QQQ Hmm this has knowledge of direction, ought to be a stack method */
983 assert(topOfStack >= istate->stack_limit(), "Stack overrun");
984 assert(topOfStack < istate->stack_base(), "Stack underrun");
986 #ifdef USELABELS
987 DISPATCH(opcode);
988 #else
989 switch (opcode)
990 #endif
991 {
992 CASE(_nop):
993 UPDATE_PC_AND_CONTINUE(1);
995 /* Push miscellaneous constants onto the stack. */
997 CASE(_aconst_null):
998 SET_STACK_OBJECT(NULL, 0);
999 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1001 #undef OPC_CONST_n
1002 #define OPC_CONST_n(opcode, const_type, value) \
1003 CASE(opcode): \
1004 SET_STACK_ ## const_type(value, 0); \
1005 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1007 OPC_CONST_n(_iconst_m1, INT, -1);
1008 OPC_CONST_n(_iconst_0, INT, 0);
1009 OPC_CONST_n(_iconst_1, INT, 1);
1010 OPC_CONST_n(_iconst_2, INT, 2);
1011 OPC_CONST_n(_iconst_3, INT, 3);
1012 OPC_CONST_n(_iconst_4, INT, 4);
1013 OPC_CONST_n(_iconst_5, INT, 5);
1014 OPC_CONST_n(_fconst_0, FLOAT, 0.0);
1015 OPC_CONST_n(_fconst_1, FLOAT, 1.0);
1016 OPC_CONST_n(_fconst_2, FLOAT, 2.0);
1018 #undef OPC_CONST2_n
1019 #define OPC_CONST2_n(opcname, value, key, kind) \
1020 CASE(_##opcname): \
1021 { \
1022 SET_STACK_ ## kind(VM##key##Const##value(), 1); \
1023 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \
1024 }
1025 OPC_CONST2_n(dconst_0, Zero, double, DOUBLE);
1026 OPC_CONST2_n(dconst_1, One, double, DOUBLE);
1027 OPC_CONST2_n(lconst_0, Zero, long, LONG);
1028 OPC_CONST2_n(lconst_1, One, long, LONG);
1030 /* Load constant from constant pool: */
1032 /* Push a 1-byte signed integer value onto the stack. */
1033 CASE(_bipush):
1034 SET_STACK_INT((jbyte)(pc[1]), 0);
1035 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
1037 /* Push a 2-byte signed integer constant onto the stack. */
1038 CASE(_sipush):
1039 SET_STACK_INT((int16_t)Bytes::get_Java_u2(pc + 1), 0);
1040 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1);
1042 /* load from local variable */
1044 CASE(_aload):
1045 VERIFY_OOP(LOCALS_OBJECT(pc[1]));
1046 SET_STACK_OBJECT(LOCALS_OBJECT(pc[1]), 0);
1047 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
1049 CASE(_iload):
1050 CASE(_fload):
1051 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0);
1052 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1);
1054 CASE(_lload):
1055 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(pc[1]), 1);
1056 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2);
1058 CASE(_dload):
1059 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(pc[1]), 1);
1060 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2);
1062 #undef OPC_LOAD_n
1063 #define OPC_LOAD_n(num) \
1064 CASE(_aload_##num): \
1065 VERIFY_OOP(LOCALS_OBJECT(num)); \
1066 SET_STACK_OBJECT(LOCALS_OBJECT(num), 0); \
1067 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \
1068 \
1069 CASE(_iload_##num): \
1070 CASE(_fload_##num): \
1071 SET_STACK_SLOT(LOCALS_SLOT(num), 0); \
1072 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \
1073 \
1074 CASE(_lload_##num): \
1075 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(num), 1); \
1076 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \
1077 CASE(_dload_##num): \
1078 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(num), 1); \
1079 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1081 OPC_LOAD_n(0);
1082 OPC_LOAD_n(1);
1083 OPC_LOAD_n(2);
1084 OPC_LOAD_n(3);
1086 /* store to a local variable */
1088 CASE(_astore):
1089 astore(topOfStack, -1, locals, pc[1]);
1090 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1);
1092 CASE(_istore):
1093 CASE(_fstore):
1094 SET_LOCALS_SLOT(STACK_SLOT(-1), pc[1]);
1095 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1);
1097 CASE(_lstore):
1098 SET_LOCALS_LONG(STACK_LONG(-1), pc[1]);
1099 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2);
1101 CASE(_dstore):
1102 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), pc[1]);
1103 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2);
1105 CASE(_wide): {
1106 uint16_t reg = Bytes::get_Java_u2(pc + 2);
1108 opcode = pc[1];
1109 switch(opcode) {
1110 case Bytecodes::_aload:
1111 VERIFY_OOP(LOCALS_OBJECT(reg));
1112 SET_STACK_OBJECT(LOCALS_OBJECT(reg), 0);
1113 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
1115 case Bytecodes::_iload:
1116 case Bytecodes::_fload:
1117 SET_STACK_SLOT(LOCALS_SLOT(reg), 0);
1118 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1);
1120 case Bytecodes::_lload:
1121 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(reg), 1);
1122 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2);
1124 case Bytecodes::_dload:
1125 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_LONG_AT(reg), 1);
1126 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2);
1128 case Bytecodes::_astore:
1129 astore(topOfStack, -1, locals, reg);
1130 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1);
1132 case Bytecodes::_istore:
1133 case Bytecodes::_fstore:
1134 SET_LOCALS_SLOT(STACK_SLOT(-1), reg);
1135 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1);
1137 case Bytecodes::_lstore:
1138 SET_LOCALS_LONG(STACK_LONG(-1), reg);
1139 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2);
1141 case Bytecodes::_dstore:
1142 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), reg);
1143 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2);
1145 case Bytecodes::_iinc: {
1146 int16_t offset = (int16_t)Bytes::get_Java_u2(pc+4);
1147 // Be nice to see what this generates.... QQQ
1148 SET_LOCALS_INT(LOCALS_INT(reg) + offset, reg);
1149 UPDATE_PC_AND_CONTINUE(6);
1150 }
1151 case Bytecodes::_ret:
1152 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(reg));
1153 UPDATE_PC_AND_CONTINUE(0);
1154 default:
1155 VM_JAVA_ERROR(vmSymbols::java_lang_InternalError(), "undefined opcode");
1156 }
1157 }
1160 #undef OPC_STORE_n
1161 #define OPC_STORE_n(num) \
1162 CASE(_astore_##num): \
1163 astore(topOfStack, -1, locals, num); \
1164 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1165 CASE(_istore_##num): \
1166 CASE(_fstore_##num): \
1167 SET_LOCALS_SLOT(STACK_SLOT(-1), num); \
1168 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1170 OPC_STORE_n(0);
1171 OPC_STORE_n(1);
1172 OPC_STORE_n(2);
1173 OPC_STORE_n(3);
1175 #undef OPC_DSTORE_n
1176 #define OPC_DSTORE_n(num) \
1177 CASE(_dstore_##num): \
1178 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), num); \
1179 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \
1180 CASE(_lstore_##num): \
1181 SET_LOCALS_LONG(STACK_LONG(-1), num); \
1182 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2);
1184 OPC_DSTORE_n(0);
1185 OPC_DSTORE_n(1);
1186 OPC_DSTORE_n(2);
1187 OPC_DSTORE_n(3);
1189 /* stack pop, dup, and insert opcodes */
1192 CASE(_pop): /* Discard the top item on the stack */
1193 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1196 CASE(_pop2): /* Discard the top 2 items on the stack */
1197 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2);
1200 CASE(_dup): /* Duplicate the top item on the stack */
1201 dup(topOfStack);
1202 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1204 CASE(_dup2): /* Duplicate the top 2 items on the stack */
1205 dup2(topOfStack);
1206 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1208 CASE(_dup_x1): /* insert top word two down */
1209 dup_x1(topOfStack);
1210 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1212 CASE(_dup_x2): /* insert top word three down */
1213 dup_x2(topOfStack);
1214 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1216 CASE(_dup2_x1): /* insert top 2 slots three down */
1217 dup2_x1(topOfStack);
1218 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1220 CASE(_dup2_x2): /* insert top 2 slots four down */
1221 dup2_x2(topOfStack);
1222 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1224 CASE(_swap): { /* swap top two elements on the stack */
1225 swap(topOfStack);
1226 UPDATE_PC_AND_CONTINUE(1);
1227 }
1229 /* Perform various binary integer operations */
1231 #undef OPC_INT_BINARY
1232 #define OPC_INT_BINARY(opcname, opname, test) \
1233 CASE(_i##opcname): \
1234 if (test && (STACK_INT(-1) == 0)) { \
1235 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \
1236 "/ by zero"); \
1237 } \
1238 SET_STACK_INT(VMint##opname(STACK_INT(-2), \
1239 STACK_INT(-1)), \
1240 -2); \
1241 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1242 CASE(_l##opcname): \
1243 { \
1244 if (test) { \
1245 jlong l1 = STACK_LONG(-1); \
1246 if (VMlongEqz(l1)) { \
1247 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \
1248 "/ by long zero"); \
1249 } \
1250 } \
1251 /* First long at (-1,-2) next long at (-3,-4) */ \
1252 SET_STACK_LONG(VMlong##opname(STACK_LONG(-3), \
1253 STACK_LONG(-1)), \
1254 -3); \
1255 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \
1256 }
1258 OPC_INT_BINARY(add, Add, 0);
1259 OPC_INT_BINARY(sub, Sub, 0);
1260 OPC_INT_BINARY(mul, Mul, 0);
1261 OPC_INT_BINARY(and, And, 0);
1262 OPC_INT_BINARY(or, Or, 0);
1263 OPC_INT_BINARY(xor, Xor, 0);
1264 OPC_INT_BINARY(div, Div, 1);
1265 OPC_INT_BINARY(rem, Rem, 1);
1268 /* Perform various binary floating number operations */
1269 /* On some machine/platforms/compilers div zero check can be implicit */
1271 #undef OPC_FLOAT_BINARY
1272 #define OPC_FLOAT_BINARY(opcname, opname) \
1273 CASE(_d##opcname): { \
1274 SET_STACK_DOUBLE(VMdouble##opname(STACK_DOUBLE(-3), \
1275 STACK_DOUBLE(-1)), \
1276 -3); \
1277 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \
1278 } \
1279 CASE(_f##opcname): \
1280 SET_STACK_FLOAT(VMfloat##opname(STACK_FLOAT(-2), \
1281 STACK_FLOAT(-1)), \
1282 -2); \
1283 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1286 OPC_FLOAT_BINARY(add, Add);
1287 OPC_FLOAT_BINARY(sub, Sub);
1288 OPC_FLOAT_BINARY(mul, Mul);
1289 OPC_FLOAT_BINARY(div, Div);
1290 OPC_FLOAT_BINARY(rem, Rem);
1292 /* Shift operations
1293 * Shift left int and long: ishl, lshl
1294 * Logical shift right int and long w/zero extension: iushr, lushr
1295 * Arithmetic shift right int and long w/sign extension: ishr, lshr
1296 */
1298 #undef OPC_SHIFT_BINARY
1299 #define OPC_SHIFT_BINARY(opcname, opname) \
1300 CASE(_i##opcname): \
1301 SET_STACK_INT(VMint##opname(STACK_INT(-2), \
1302 STACK_INT(-1)), \
1303 -2); \
1304 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1305 CASE(_l##opcname): \
1306 { \
1307 SET_STACK_LONG(VMlong##opname(STACK_LONG(-2), \
1308 STACK_INT(-1)), \
1309 -2); \
1310 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1311 }
1313 OPC_SHIFT_BINARY(shl, Shl);
1314 OPC_SHIFT_BINARY(shr, Shr);
1315 OPC_SHIFT_BINARY(ushr, Ushr);
1317 /* Increment local variable by constant */
1318 CASE(_iinc):
1319 {
1320 // locals[pc[1]].j.i += (jbyte)(pc[2]);
1321 SET_LOCALS_INT(LOCALS_INT(pc[1]) + (jbyte)(pc[2]), pc[1]);
1322 UPDATE_PC_AND_CONTINUE(3);
1323 }
1325 /* negate the value on the top of the stack */
1327 CASE(_ineg):
1328 SET_STACK_INT(VMintNeg(STACK_INT(-1)), -1);
1329 UPDATE_PC_AND_CONTINUE(1);
1331 CASE(_fneg):
1332 SET_STACK_FLOAT(VMfloatNeg(STACK_FLOAT(-1)), -1);
1333 UPDATE_PC_AND_CONTINUE(1);
1335 CASE(_lneg):
1336 {
1337 SET_STACK_LONG(VMlongNeg(STACK_LONG(-1)), -1);
1338 UPDATE_PC_AND_CONTINUE(1);
1339 }
1341 CASE(_dneg):
1342 {
1343 SET_STACK_DOUBLE(VMdoubleNeg(STACK_DOUBLE(-1)), -1);
1344 UPDATE_PC_AND_CONTINUE(1);
1345 }
1347 /* Conversion operations */
1349 CASE(_i2f): /* convert top of stack int to float */
1350 SET_STACK_FLOAT(VMint2Float(STACK_INT(-1)), -1);
1351 UPDATE_PC_AND_CONTINUE(1);
1353 CASE(_i2l): /* convert top of stack int to long */
1354 {
1355 // this is ugly QQQ
1356 jlong r = VMint2Long(STACK_INT(-1));
1357 MORE_STACK(-1); // Pop
1358 SET_STACK_LONG(r, 1);
1360 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1361 }
1363 CASE(_i2d): /* convert top of stack int to double */
1364 {
1365 // this is ugly QQQ (why cast to jlong?? )
1366 jdouble r = (jlong)STACK_INT(-1);
1367 MORE_STACK(-1); // Pop
1368 SET_STACK_DOUBLE(r, 1);
1370 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1371 }
1373 CASE(_l2i): /* convert top of stack long to int */
1374 {
1375 jint r = VMlong2Int(STACK_LONG(-1));
1376 MORE_STACK(-2); // Pop
1377 SET_STACK_INT(r, 0);
1378 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1379 }
1381 CASE(_l2f): /* convert top of stack long to float */
1382 {
1383 jlong r = STACK_LONG(-1);
1384 MORE_STACK(-2); // Pop
1385 SET_STACK_FLOAT(VMlong2Float(r), 0);
1386 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1387 }
1389 CASE(_l2d): /* convert top of stack long to double */
1390 {
1391 jlong r = STACK_LONG(-1);
1392 MORE_STACK(-2); // Pop
1393 SET_STACK_DOUBLE(VMlong2Double(r), 1);
1394 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1395 }
1397 CASE(_f2i): /* Convert top of stack float to int */
1398 SET_STACK_INT(SharedRuntime::f2i(STACK_FLOAT(-1)), -1);
1399 UPDATE_PC_AND_CONTINUE(1);
1401 CASE(_f2l): /* convert top of stack float to long */
1402 {
1403 jlong r = SharedRuntime::f2l(STACK_FLOAT(-1));
1404 MORE_STACK(-1); // POP
1405 SET_STACK_LONG(r, 1);
1406 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1407 }
1409 CASE(_f2d): /* convert top of stack float to double */
1410 {
1411 jfloat f;
1412 jdouble r;
1413 f = STACK_FLOAT(-1);
1414 r = (jdouble) f;
1415 MORE_STACK(-1); // POP
1416 SET_STACK_DOUBLE(r, 1);
1417 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1418 }
1420 CASE(_d2i): /* convert top of stack double to int */
1421 {
1422 jint r1 = SharedRuntime::d2i(STACK_DOUBLE(-1));
1423 MORE_STACK(-2);
1424 SET_STACK_INT(r1, 0);
1425 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1426 }
1428 CASE(_d2f): /* convert top of stack double to float */
1429 {
1430 jfloat r1 = VMdouble2Float(STACK_DOUBLE(-1));
1431 MORE_STACK(-2);
1432 SET_STACK_FLOAT(r1, 0);
1433 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1434 }
1436 CASE(_d2l): /* convert top of stack double to long */
1437 {
1438 jlong r1 = SharedRuntime::d2l(STACK_DOUBLE(-1));
1439 MORE_STACK(-2);
1440 SET_STACK_LONG(r1, 1);
1441 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2);
1442 }
1444 CASE(_i2b):
1445 SET_STACK_INT(VMint2Byte(STACK_INT(-1)), -1);
1446 UPDATE_PC_AND_CONTINUE(1);
1448 CASE(_i2c):
1449 SET_STACK_INT(VMint2Char(STACK_INT(-1)), -1);
1450 UPDATE_PC_AND_CONTINUE(1);
1452 CASE(_i2s):
1453 SET_STACK_INT(VMint2Short(STACK_INT(-1)), -1);
1454 UPDATE_PC_AND_CONTINUE(1);
1456 /* comparison operators */
1459 #define COMPARISON_OP(name, comparison) \
1460 CASE(_if_icmp##name): { \
1461 int skip = (STACK_INT(-2) comparison STACK_INT(-1)) \
1462 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1463 address branch_pc = pc; \
1464 UPDATE_PC_AND_TOS(skip, -2); \
1465 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1466 CONTINUE; \
1467 } \
1468 CASE(_if##name): { \
1469 int skip = (STACK_INT(-1) comparison 0) \
1470 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1471 address branch_pc = pc; \
1472 UPDATE_PC_AND_TOS(skip, -1); \
1473 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1474 CONTINUE; \
1475 }
1477 #define COMPARISON_OP2(name, comparison) \
1478 COMPARISON_OP(name, comparison) \
1479 CASE(_if_acmp##name): { \
1480 int skip = (STACK_OBJECT(-2) comparison STACK_OBJECT(-1)) \
1481 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1482 address branch_pc = pc; \
1483 UPDATE_PC_AND_TOS(skip, -2); \
1484 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1485 CONTINUE; \
1486 }
1488 #define NULL_COMPARISON_NOT_OP(name) \
1489 CASE(_if##name): { \
1490 int skip = (!(STACK_OBJECT(-1) == NULL)) \
1491 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1492 address branch_pc = pc; \
1493 UPDATE_PC_AND_TOS(skip, -1); \
1494 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1495 CONTINUE; \
1496 }
1498 #define NULL_COMPARISON_OP(name) \
1499 CASE(_if##name): { \
1500 int skip = ((STACK_OBJECT(-1) == NULL)) \
1501 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \
1502 address branch_pc = pc; \
1503 UPDATE_PC_AND_TOS(skip, -1); \
1504 DO_BACKEDGE_CHECKS(skip, branch_pc); \
1505 CONTINUE; \
1506 }
1507 COMPARISON_OP(lt, <);
1508 COMPARISON_OP(gt, >);
1509 COMPARISON_OP(le, <=);
1510 COMPARISON_OP(ge, >=);
1511 COMPARISON_OP2(eq, ==); /* include ref comparison */
1512 COMPARISON_OP2(ne, !=); /* include ref comparison */
1513 NULL_COMPARISON_OP(null);
1514 NULL_COMPARISON_NOT_OP(nonnull);
1516 /* Goto pc at specified offset in switch table. */
1518 CASE(_tableswitch): {
1519 jint* lpc = (jint*)VMalignWordUp(pc+1);
1520 int32_t key = STACK_INT(-1);
1521 int32_t low = Bytes::get_Java_u4((address)&lpc[1]);
1522 int32_t high = Bytes::get_Java_u4((address)&lpc[2]);
1523 int32_t skip;
1524 key -= low;
1525 skip = ((uint32_t) key > (uint32_t)(high - low))
1526 ? Bytes::get_Java_u4((address)&lpc[0])
1527 : Bytes::get_Java_u4((address)&lpc[key + 3]);
1528 // Does this really need a full backedge check (osr?)
1529 address branch_pc = pc;
1530 UPDATE_PC_AND_TOS(skip, -1);
1531 DO_BACKEDGE_CHECKS(skip, branch_pc);
1532 CONTINUE;
1533 }
1535 /* Goto pc whose table entry matches specified key */
1537 CASE(_lookupswitch): {
1538 jint* lpc = (jint*)VMalignWordUp(pc+1);
1539 int32_t key = STACK_INT(-1);
1540 int32_t skip = Bytes::get_Java_u4((address) lpc); /* default amount */
1541 int32_t npairs = Bytes::get_Java_u4((address) &lpc[1]);
1542 while (--npairs >= 0) {
1543 lpc += 2;
1544 if (key == (int32_t)Bytes::get_Java_u4((address)lpc)) {
1545 skip = Bytes::get_Java_u4((address)&lpc[1]);
1546 break;
1547 }
1548 }
1549 address branch_pc = pc;
1550 UPDATE_PC_AND_TOS(skip, -1);
1551 DO_BACKEDGE_CHECKS(skip, branch_pc);
1552 CONTINUE;
1553 }
1555 CASE(_fcmpl):
1556 CASE(_fcmpg):
1557 {
1558 SET_STACK_INT(VMfloatCompare(STACK_FLOAT(-2),
1559 STACK_FLOAT(-1),
1560 (opcode == Bytecodes::_fcmpl ? -1 : 1)),
1561 -2);
1562 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1563 }
1565 CASE(_dcmpl):
1566 CASE(_dcmpg):
1567 {
1568 int r = VMdoubleCompare(STACK_DOUBLE(-3),
1569 STACK_DOUBLE(-1),
1570 (opcode == Bytecodes::_dcmpl ? -1 : 1));
1571 MORE_STACK(-4); // Pop
1572 SET_STACK_INT(r, 0);
1573 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1574 }
1576 CASE(_lcmp):
1577 {
1578 int r = VMlongCompare(STACK_LONG(-3), STACK_LONG(-1));
1579 MORE_STACK(-4);
1580 SET_STACK_INT(r, 0);
1581 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1);
1582 }
1585 /* Return from a method */
1587 CASE(_areturn):
1588 CASE(_ireturn):
1589 CASE(_freturn):
1590 {
1591 // Allow a safepoint before returning to frame manager.
1592 SAFEPOINT;
1594 goto handle_return;
1595 }
1597 CASE(_lreturn):
1598 CASE(_dreturn):
1599 {
1600 // Allow a safepoint before returning to frame manager.
1601 SAFEPOINT;
1602 goto handle_return;
1603 }
1605 CASE(_return_register_finalizer): {
1607 oop rcvr = LOCALS_OBJECT(0);
1608 VERIFY_OOP(rcvr);
1609 if (rcvr->klass()->has_finalizer()) {
1610 CALL_VM(InterpreterRuntime::register_finalizer(THREAD, rcvr), handle_exception);
1611 }
1612 goto handle_return;
1613 }
1614 CASE(_return): {
1616 // Allow a safepoint before returning to frame manager.
1617 SAFEPOINT;
1618 goto handle_return;
1619 }
1621 /* Array access byte-codes */
1623 /* Every array access byte-code starts out like this */
1624 // arrayOopDesc* arrObj = (arrayOopDesc*)STACK_OBJECT(arrayOff);
1625 #define ARRAY_INTRO(arrayOff) \
1626 arrayOop arrObj = (arrayOop)STACK_OBJECT(arrayOff); \
1627 jint index = STACK_INT(arrayOff + 1); \
1628 char message[jintAsStringSize]; \
1629 CHECK_NULL(arrObj); \
1630 if ((uint32_t)index >= (uint32_t)arrObj->length()) { \
1631 sprintf(message, "%d", index); \
1632 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), \
1633 message); \
1634 }
1636 /* 32-bit loads. These handle conversion from < 32-bit types */
1637 #define ARRAY_LOADTO32(T, T2, format, stackRes, extra) \
1638 { \
1639 ARRAY_INTRO(-2); \
1640 extra; \
1641 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), \
1642 -2); \
1643 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \
1644 }
1646 /* 64-bit loads */
1647 #define ARRAY_LOADTO64(T,T2, stackRes, extra) \
1648 { \
1649 ARRAY_INTRO(-2); \
1650 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), -1); \
1651 extra; \
1652 UPDATE_PC_AND_CONTINUE(1); \
1653 }
1655 CASE(_iaload):
1656 ARRAY_LOADTO32(T_INT, jint, "%d", STACK_INT, 0);
1657 CASE(_faload):
1658 ARRAY_LOADTO32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0);
1659 CASE(_aaload): {
1660 ARRAY_INTRO(-2);
1661 SET_STACK_OBJECT(((objArrayOop) arrObj)->obj_at(index), -2);
1662 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1663 }
1664 CASE(_baload):
1665 ARRAY_LOADTO32(T_BYTE, jbyte, "%d", STACK_INT, 0);
1666 CASE(_caload):
1667 ARRAY_LOADTO32(T_CHAR, jchar, "%d", STACK_INT, 0);
1668 CASE(_saload):
1669 ARRAY_LOADTO32(T_SHORT, jshort, "%d", STACK_INT, 0);
1670 CASE(_laload):
1671 ARRAY_LOADTO64(T_LONG, jlong, STACK_LONG, 0);
1672 CASE(_daload):
1673 ARRAY_LOADTO64(T_DOUBLE, jdouble, STACK_DOUBLE, 0);
1675 /* 32-bit stores. These handle conversion to < 32-bit types */
1676 #define ARRAY_STOREFROM32(T, T2, format, stackSrc, extra) \
1677 { \
1678 ARRAY_INTRO(-3); \
1679 extra; \
1680 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \
1681 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); \
1682 }
1684 /* 64-bit stores */
1685 #define ARRAY_STOREFROM64(T, T2, stackSrc, extra) \
1686 { \
1687 ARRAY_INTRO(-4); \
1688 extra; \
1689 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \
1690 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -4); \
1691 }
1693 CASE(_iastore):
1694 ARRAY_STOREFROM32(T_INT, jint, "%d", STACK_INT, 0);
1695 CASE(_fastore):
1696 ARRAY_STOREFROM32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0);
1697 /*
1698 * This one looks different because of the assignability check
1699 */
1700 CASE(_aastore): {
1701 oop rhsObject = STACK_OBJECT(-1);
1702 VERIFY_OOP(rhsObject);
1703 ARRAY_INTRO( -3);
1704 // arrObj, index are set
1705 if (rhsObject != NULL) {
1706 /* Check assignability of rhsObject into arrObj */
1707 Klass* rhsKlassOop = rhsObject->klass(); // EBX (subclass)
1708 Klass* elemKlassOop = ObjArrayKlass::cast(arrObj->klass())->element_klass(); // superklass EAX
1709 //
1710 // Check for compatibilty. This check must not GC!!
1711 // Seems way more expensive now that we must dispatch
1712 //
1713 if (rhsKlassOop != elemKlassOop && !rhsKlassOop->is_subtype_of(elemKlassOop)) { // ebx->is...
1714 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayStoreException(), "");
1715 }
1716 }
1717 ((objArrayOopDesc *) arrObj)->obj_at_put(index, rhsObject);
1718 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3);
1719 }
1720 CASE(_bastore):
1721 ARRAY_STOREFROM32(T_BYTE, jbyte, "%d", STACK_INT, 0);
1722 CASE(_castore):
1723 ARRAY_STOREFROM32(T_CHAR, jchar, "%d", STACK_INT, 0);
1724 CASE(_sastore):
1725 ARRAY_STOREFROM32(T_SHORT, jshort, "%d", STACK_INT, 0);
1726 CASE(_lastore):
1727 ARRAY_STOREFROM64(T_LONG, jlong, STACK_LONG, 0);
1728 CASE(_dastore):
1729 ARRAY_STOREFROM64(T_DOUBLE, jdouble, STACK_DOUBLE, 0);
1731 CASE(_arraylength):
1732 {
1733 arrayOop ary = (arrayOop) STACK_OBJECT(-1);
1734 CHECK_NULL(ary);
1735 SET_STACK_INT(ary->length(), -1);
1736 UPDATE_PC_AND_CONTINUE(1);
1737 }
1739 /* monitorenter and monitorexit for locking/unlocking an object */
1741 CASE(_monitorenter): {
1742 oop lockee = STACK_OBJECT(-1);
1743 // derefing's lockee ought to provoke implicit null check
1744 CHECK_NULL(lockee);
1745 // find a free monitor or one already allocated for this object
1746 // if we find a matching object then we need a new monitor
1747 // since this is recursive enter
1748 BasicObjectLock* limit = istate->monitor_base();
1749 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base();
1750 BasicObjectLock* entry = NULL;
1751 while (most_recent != limit ) {
1752 if (most_recent->obj() == NULL) entry = most_recent;
1753 else if (most_recent->obj() == lockee) break;
1754 most_recent++;
1755 }
1756 if (entry != NULL) {
1757 entry->set_obj(lockee);
1758 int success = false;
1759 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place;
1761 markOop mark = lockee->mark();
1762 intptr_t hash = (intptr_t) markOopDesc::no_hash;
1763 // implies UseBiasedLocking
1764 if (mark->has_bias_pattern()) {
1765 uintptr_t thread_ident;
1766 uintptr_t anticipated_bias_locking_value;
1767 thread_ident = (uintptr_t)istate->thread();
1768 anticipated_bias_locking_value =
1769 (((uintptr_t)lockee->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) &
1770 ~((uintptr_t) markOopDesc::age_mask_in_place);
1772 if (anticipated_bias_locking_value == 0) {
1773 // already biased towards this thread, nothing to do
1774 if (PrintBiasedLockingStatistics) {
1775 (* BiasedLocking::biased_lock_entry_count_addr())++;
1776 }
1777 success = true;
1778 }
1779 else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) {
1780 // try revoke bias
1781 markOop header = lockee->klass()->prototype_header();
1782 if (hash != markOopDesc::no_hash) {
1783 header = header->copy_set_hash(hash);
1784 }
1785 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), mark) == mark) {
1786 if (PrintBiasedLockingStatistics)
1787 (*BiasedLocking::revoked_lock_entry_count_addr())++;
1788 }
1789 }
1790 else if ((anticipated_bias_locking_value & epoch_mask_in_place) !=0) {
1791 // try rebias
1792 markOop new_header = (markOop) ( (intptr_t) lockee->klass()->prototype_header() | thread_ident);
1793 if (hash != markOopDesc::no_hash) {
1794 new_header = new_header->copy_set_hash(hash);
1795 }
1796 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), mark) == mark) {
1797 if (PrintBiasedLockingStatistics)
1798 (* BiasedLocking::rebiased_lock_entry_count_addr())++;
1799 }
1800 else {
1801 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
1802 }
1803 success = true;
1804 }
1805 else {
1806 // try to bias towards thread in case object is anonymously biased
1807 markOop header = (markOop) ((uintptr_t) mark & ((uintptr_t)markOopDesc::biased_lock_mask_in_place |
1808 (uintptr_t)markOopDesc::age_mask_in_place |
1809 epoch_mask_in_place));
1810 if (hash != markOopDesc::no_hash) {
1811 header = header->copy_set_hash(hash);
1812 }
1813 markOop new_header = (markOop) ((uintptr_t) header | thread_ident);
1814 // debugging hint
1815 DEBUG_ONLY(entry->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);)
1816 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), header) == header) {
1817 if (PrintBiasedLockingStatistics)
1818 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++;
1819 }
1820 else {
1821 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
1822 }
1823 success = true;
1824 }
1825 }
1827 // traditional lightweight locking
1828 if (!success) {
1829 markOop displaced = lockee->mark()->set_unlocked();
1830 entry->lock()->set_displaced_header(displaced);
1831 bool call_vm = UseHeavyMonitors;
1832 if (call_vm || Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) {
1833 // Is it simple recursive case?
1834 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) {
1835 entry->lock()->set_displaced_header(NULL);
1836 } else {
1837 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception);
1838 }
1839 }
1840 }
1841 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1842 } else {
1843 istate->set_msg(more_monitors);
1844 UPDATE_PC_AND_RETURN(0); // Re-execute
1845 }
1846 }
1848 CASE(_monitorexit): {
1849 oop lockee = STACK_OBJECT(-1);
1850 CHECK_NULL(lockee);
1851 // derefing's lockee ought to provoke implicit null check
1852 // find our monitor slot
1853 BasicObjectLock* limit = istate->monitor_base();
1854 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base();
1855 while (most_recent != limit ) {
1856 if ((most_recent)->obj() == lockee) {
1857 BasicLock* lock = most_recent->lock();
1858 markOop header = lock->displaced_header();
1859 most_recent->set_obj(NULL);
1860 if (!lockee->mark()->has_bias_pattern()) {
1861 bool call_vm = UseHeavyMonitors;
1862 // If it isn't recursive we either must swap old header or call the runtime
1863 if (header != NULL || call_vm) {
1864 if (call_vm || Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) {
1865 // restore object for the slow case
1866 most_recent->set_obj(lockee);
1867 CALL_VM(InterpreterRuntime::monitorexit(THREAD, most_recent), handle_exception);
1868 }
1869 }
1870 }
1871 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1);
1872 }
1873 most_recent++;
1874 }
1875 // Need to throw illegal monitor state exception
1876 CALL_VM(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD), handle_exception);
1877 ShouldNotReachHere();
1878 }
1880 /* All of the non-quick opcodes. */
1882 /* -Set clobbersCpIndex true if the quickened opcode clobbers the
1883 * constant pool index in the instruction.
1884 */
1885 CASE(_getfield):
1886 CASE(_getstatic):
1887 {
1888 u2 index;
1889 ConstantPoolCacheEntry* cache;
1890 index = Bytes::get_native_u2(pc+1);
1892 // QQQ Need to make this as inlined as possible. Probably need to
1893 // split all the bytecode cases out so c++ compiler has a chance
1894 // for constant prop to fold everything possible away.
1896 cache = cp->entry_at(index);
1897 if (!cache->is_resolved((Bytecodes::Code)opcode)) {
1898 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode),
1899 handle_exception);
1900 cache = cp->entry_at(index);
1901 }
1903 #ifdef VM_JVMTI
1904 if (_jvmti_interp_events) {
1905 int *count_addr;
1906 oop obj;
1907 // Check to see if a field modification watch has been set
1908 // before we take the time to call into the VM.
1909 count_addr = (int *)JvmtiExport::get_field_access_count_addr();
1910 if ( *count_addr > 0 ) {
1911 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) {
1912 obj = (oop)NULL;
1913 } else {
1914 obj = (oop) STACK_OBJECT(-1);
1915 VERIFY_OOP(obj);
1916 }
1917 CALL_VM(InterpreterRuntime::post_field_access(THREAD,
1918 obj,
1919 cache),
1920 handle_exception);
1921 }
1922 }
1923 #endif /* VM_JVMTI */
1925 oop obj;
1926 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) {
1927 Klass* k = cache->f1_as_klass();
1928 obj = k->java_mirror();
1929 MORE_STACK(1); // Assume single slot push
1930 } else {
1931 obj = (oop) STACK_OBJECT(-1);
1932 CHECK_NULL(obj);
1933 }
1935 //
1936 // Now store the result on the stack
1937 //
1938 TosState tos_type = cache->flag_state();
1939 int field_offset = cache->f2_as_index();
1940 if (cache->is_volatile()) {
1941 if (tos_type == atos) {
1942 VERIFY_OOP(obj->obj_field_acquire(field_offset));
1943 SET_STACK_OBJECT(obj->obj_field_acquire(field_offset), -1);
1944 } else if (tos_type == itos) {
1945 SET_STACK_INT(obj->int_field_acquire(field_offset), -1);
1946 } else if (tos_type == ltos) {
1947 SET_STACK_LONG(obj->long_field_acquire(field_offset), 0);
1948 MORE_STACK(1);
1949 } else if (tos_type == btos) {
1950 SET_STACK_INT(obj->byte_field_acquire(field_offset), -1);
1951 } else if (tos_type == ctos) {
1952 SET_STACK_INT(obj->char_field_acquire(field_offset), -1);
1953 } else if (tos_type == stos) {
1954 SET_STACK_INT(obj->short_field_acquire(field_offset), -1);
1955 } else if (tos_type == ftos) {
1956 SET_STACK_FLOAT(obj->float_field_acquire(field_offset), -1);
1957 } else {
1958 SET_STACK_DOUBLE(obj->double_field_acquire(field_offset), 0);
1959 MORE_STACK(1);
1960 }
1961 } else {
1962 if (tos_type == atos) {
1963 VERIFY_OOP(obj->obj_field(field_offset));
1964 SET_STACK_OBJECT(obj->obj_field(field_offset), -1);
1965 } else if (tos_type == itos) {
1966 SET_STACK_INT(obj->int_field(field_offset), -1);
1967 } else if (tos_type == ltos) {
1968 SET_STACK_LONG(obj->long_field(field_offset), 0);
1969 MORE_STACK(1);
1970 } else if (tos_type == btos) {
1971 SET_STACK_INT(obj->byte_field(field_offset), -1);
1972 } else if (tos_type == ctos) {
1973 SET_STACK_INT(obj->char_field(field_offset), -1);
1974 } else if (tos_type == stos) {
1975 SET_STACK_INT(obj->short_field(field_offset), -1);
1976 } else if (tos_type == ftos) {
1977 SET_STACK_FLOAT(obj->float_field(field_offset), -1);
1978 } else {
1979 SET_STACK_DOUBLE(obj->double_field(field_offset), 0);
1980 MORE_STACK(1);
1981 }
1982 }
1984 UPDATE_PC_AND_CONTINUE(3);
1985 }
1987 CASE(_putfield):
1988 CASE(_putstatic):
1989 {
1990 u2 index = Bytes::get_native_u2(pc+1);
1991 ConstantPoolCacheEntry* cache = cp->entry_at(index);
1992 if (!cache->is_resolved((Bytecodes::Code)opcode)) {
1993 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode),
1994 handle_exception);
1995 cache = cp->entry_at(index);
1996 }
1998 #ifdef VM_JVMTI
1999 if (_jvmti_interp_events) {
2000 int *count_addr;
2001 oop obj;
2002 // Check to see if a field modification watch has been set
2003 // before we take the time to call into the VM.
2004 count_addr = (int *)JvmtiExport::get_field_modification_count_addr();
2005 if ( *count_addr > 0 ) {
2006 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) {
2007 obj = (oop)NULL;
2008 }
2009 else {
2010 if (cache->is_long() || cache->is_double()) {
2011 obj = (oop) STACK_OBJECT(-3);
2012 } else {
2013 obj = (oop) STACK_OBJECT(-2);
2014 }
2015 VERIFY_OOP(obj);
2016 }
2018 CALL_VM(InterpreterRuntime::post_field_modification(THREAD,
2019 obj,
2020 cache,
2021 (jvalue *)STACK_SLOT(-1)),
2022 handle_exception);
2023 }
2024 }
2025 #endif /* VM_JVMTI */
2027 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
2028 // out so c++ compiler has a chance for constant prop to fold everything possible away.
2030 oop obj;
2031 int count;
2032 TosState tos_type = cache->flag_state();
2034 count = -1;
2035 if (tos_type == ltos || tos_type == dtos) {
2036 --count;
2037 }
2038 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) {
2039 Klass* k = cache->f1_as_klass();
2040 obj = k->java_mirror();
2041 } else {
2042 --count;
2043 obj = (oop) STACK_OBJECT(count);
2044 CHECK_NULL(obj);
2045 }
2047 //
2048 // Now store the result
2049 //
2050 int field_offset = cache->f2_as_index();
2051 if (cache->is_volatile()) {
2052 if (tos_type == itos) {
2053 obj->release_int_field_put(field_offset, STACK_INT(-1));
2054 } else if (tos_type == atos) {
2055 VERIFY_OOP(STACK_OBJECT(-1));
2056 obj->release_obj_field_put(field_offset, STACK_OBJECT(-1));
2057 } else if (tos_type == btos) {
2058 obj->release_byte_field_put(field_offset, STACK_INT(-1));
2059 } else if (tos_type == ltos) {
2060 obj->release_long_field_put(field_offset, STACK_LONG(-1));
2061 } else if (tos_type == ctos) {
2062 obj->release_char_field_put(field_offset, STACK_INT(-1));
2063 } else if (tos_type == stos) {
2064 obj->release_short_field_put(field_offset, STACK_INT(-1));
2065 } else if (tos_type == ftos) {
2066 obj->release_float_field_put(field_offset, STACK_FLOAT(-1));
2067 } else {
2068 obj->release_double_field_put(field_offset, STACK_DOUBLE(-1));
2069 }
2070 OrderAccess::storeload();
2071 } else {
2072 if (tos_type == itos) {
2073 obj->int_field_put(field_offset, STACK_INT(-1));
2074 } else if (tos_type == atos) {
2075 VERIFY_OOP(STACK_OBJECT(-1));
2076 obj->obj_field_put(field_offset, STACK_OBJECT(-1));
2077 } else if (tos_type == btos) {
2078 obj->byte_field_put(field_offset, STACK_INT(-1));
2079 } else if (tos_type == ltos) {
2080 obj->long_field_put(field_offset, STACK_LONG(-1));
2081 } else if (tos_type == ctos) {
2082 obj->char_field_put(field_offset, STACK_INT(-1));
2083 } else if (tos_type == stos) {
2084 obj->short_field_put(field_offset, STACK_INT(-1));
2085 } else if (tos_type == ftos) {
2086 obj->float_field_put(field_offset, STACK_FLOAT(-1));
2087 } else {
2088 obj->double_field_put(field_offset, STACK_DOUBLE(-1));
2089 }
2090 }
2092 UPDATE_PC_AND_TOS_AND_CONTINUE(3, count);
2093 }
2095 CASE(_new): {
2096 u2 index = Bytes::get_Java_u2(pc+1);
2097 ConstantPool* constants = istate->method()->constants();
2098 if (!constants->tag_at(index).is_unresolved_klass()) {
2099 // Make sure klass is initialized and doesn't have a finalizer
2100 Klass* entry = constants->slot_at(index).get_klass();
2101 assert(entry->is_klass(), "Should be resolved klass");
2102 Klass* k_entry = (Klass*) entry;
2103 assert(k_entry->oop_is_instance(), "Should be InstanceKlass");
2104 InstanceKlass* ik = (InstanceKlass*) k_entry;
2105 if ( ik->is_initialized() && ik->can_be_fastpath_allocated() ) {
2106 size_t obj_size = ik->size_helper();
2107 oop result = NULL;
2108 // If the TLAB isn't pre-zeroed then we'll have to do it
2109 bool need_zero = !ZeroTLAB;
2110 if (UseTLAB) {
2111 result = (oop) THREAD->tlab().allocate(obj_size);
2112 }
2113 if (result == NULL) {
2114 need_zero = true;
2115 // Try allocate in shared eden
2116 retry:
2117 HeapWord* compare_to = *Universe::heap()->top_addr();
2118 HeapWord* new_top = compare_to + obj_size;
2119 if (new_top <= *Universe::heap()->end_addr()) {
2120 if (Atomic::cmpxchg_ptr(new_top, Universe::heap()->top_addr(), compare_to) != compare_to) {
2121 goto retry;
2122 }
2123 result = (oop) compare_to;
2124 }
2125 }
2126 if (result != NULL) {
2127 // Initialize object (if nonzero size and need) and then the header
2128 if (need_zero ) {
2129 HeapWord* to_zero = (HeapWord*) result + sizeof(oopDesc) / oopSize;
2130 obj_size -= sizeof(oopDesc) / oopSize;
2131 if (obj_size > 0 ) {
2132 memset(to_zero, 0, obj_size * HeapWordSize);
2133 }
2134 }
2135 if (UseBiasedLocking) {
2136 result->set_mark(ik->prototype_header());
2137 } else {
2138 result->set_mark(markOopDesc::prototype());
2139 }
2140 result->set_klass_gap(0);
2141 result->set_klass(k_entry);
2142 SET_STACK_OBJECT(result, 0);
2143 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1);
2144 }
2145 }
2146 }
2147 // Slow case allocation
2148 CALL_VM(InterpreterRuntime::_new(THREAD, METHOD->constants(), index),
2149 handle_exception);
2150 SET_STACK_OBJECT(THREAD->vm_result(), 0);
2151 THREAD->set_vm_result(NULL);
2152 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1);
2153 }
2154 CASE(_anewarray): {
2155 u2 index = Bytes::get_Java_u2(pc+1);
2156 jint size = STACK_INT(-1);
2157 CALL_VM(InterpreterRuntime::anewarray(THREAD, METHOD->constants(), index, size),
2158 handle_exception);
2159 SET_STACK_OBJECT(THREAD->vm_result(), -1);
2160 THREAD->set_vm_result(NULL);
2161 UPDATE_PC_AND_CONTINUE(3);
2162 }
2163 CASE(_multianewarray): {
2164 jint dims = *(pc+3);
2165 jint size = STACK_INT(-1);
2166 // stack grows down, dimensions are up!
2167 jint *dimarray =
2168 (jint*)&topOfStack[dims * Interpreter::stackElementWords+
2169 Interpreter::stackElementWords-1];
2170 //adjust pointer to start of stack element
2171 CALL_VM(InterpreterRuntime::multianewarray(THREAD, dimarray),
2172 handle_exception);
2173 SET_STACK_OBJECT(THREAD->vm_result(), -dims);
2174 THREAD->set_vm_result(NULL);
2175 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -(dims-1));
2176 }
2177 CASE(_checkcast):
2178 if (STACK_OBJECT(-1) != NULL) {
2179 VERIFY_OOP(STACK_OBJECT(-1));
2180 u2 index = Bytes::get_Java_u2(pc+1);
2181 if (ProfileInterpreter) {
2182 // needs Profile_checkcast QQQ
2183 ShouldNotReachHere();
2184 }
2185 // Constant pool may have actual klass or unresolved klass. If it is
2186 // unresolved we must resolve it
2187 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) {
2188 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception);
2189 }
2190 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass();
2191 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); //ebx
2192 //
2193 // Check for compatibilty. This check must not GC!!
2194 // Seems way more expensive now that we must dispatch
2195 //
2196 if (objKlassOop != klassOf &&
2197 !objKlassOop->is_subtype_of(klassOf)) {
2198 ResourceMark rm(THREAD);
2199 const char* objName = objKlassOop->external_name();
2200 const char* klassName = klassOf->external_name();
2201 char* message = SharedRuntime::generate_class_cast_message(
2202 objName, klassName);
2203 VM_JAVA_ERROR(vmSymbols::java_lang_ClassCastException(), message);
2204 }
2205 } else {
2206 if (UncommonNullCast) {
2207 // istate->method()->set_null_cast_seen();
2208 // [RGV] Not sure what to do here!
2210 }
2211 }
2212 UPDATE_PC_AND_CONTINUE(3);
2214 CASE(_instanceof):
2215 if (STACK_OBJECT(-1) == NULL) {
2216 SET_STACK_INT(0, -1);
2217 } else {
2218 VERIFY_OOP(STACK_OBJECT(-1));
2219 u2 index = Bytes::get_Java_u2(pc+1);
2220 // Constant pool may have actual klass or unresolved klass. If it is
2221 // unresolved we must resolve it
2222 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) {
2223 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception);
2224 }
2225 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass();
2226 Klass* objKlassOop = STACK_OBJECT(-1)->klass();
2227 //
2228 // Check for compatibilty. This check must not GC!!
2229 // Seems way more expensive now that we must dispatch
2230 //
2231 if ( objKlassOop == klassOf || objKlassOop->is_subtype_of(klassOf)) {
2232 SET_STACK_INT(1, -1);
2233 } else {
2234 SET_STACK_INT(0, -1);
2235 }
2236 }
2237 UPDATE_PC_AND_CONTINUE(3);
2239 CASE(_ldc_w):
2240 CASE(_ldc):
2241 {
2242 u2 index;
2243 bool wide = false;
2244 int incr = 2; // frequent case
2245 if (opcode == Bytecodes::_ldc) {
2246 index = pc[1];
2247 } else {
2248 index = Bytes::get_Java_u2(pc+1);
2249 incr = 3;
2250 wide = true;
2251 }
2253 ConstantPool* constants = METHOD->constants();
2254 switch (constants->tag_at(index).value()) {
2255 case JVM_CONSTANT_Integer:
2256 SET_STACK_INT(constants->int_at(index), 0);
2257 break;
2259 case JVM_CONSTANT_Float:
2260 SET_STACK_FLOAT(constants->float_at(index), 0);
2261 break;
2263 case JVM_CONSTANT_String:
2264 {
2265 oop result = constants->resolved_references()->obj_at(index);
2266 if (result == NULL) {
2267 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception);
2268 SET_STACK_OBJECT(THREAD->vm_result(), 0);
2269 THREAD->set_vm_result(NULL);
2270 } else {
2271 VERIFY_OOP(result);
2272 SET_STACK_OBJECT(result, 0);
2273 }
2274 break;
2275 }
2277 case JVM_CONSTANT_Class:
2278 VERIFY_OOP(constants->resolved_klass_at(index)->java_mirror());
2279 SET_STACK_OBJECT(constants->resolved_klass_at(index)->java_mirror(), 0);
2280 break;
2282 case JVM_CONSTANT_UnresolvedClass:
2283 case JVM_CONSTANT_UnresolvedClassInError:
2284 CALL_VM(InterpreterRuntime::ldc(THREAD, wide), handle_exception);
2285 SET_STACK_OBJECT(THREAD->vm_result(), 0);
2286 THREAD->set_vm_result(NULL);
2287 break;
2289 default: ShouldNotReachHere();
2290 }
2291 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1);
2292 }
2294 CASE(_ldc2_w):
2295 {
2296 u2 index = Bytes::get_Java_u2(pc+1);
2298 ConstantPool* constants = METHOD->constants();
2299 switch (constants->tag_at(index).value()) {
2301 case JVM_CONSTANT_Long:
2302 SET_STACK_LONG(constants->long_at(index), 1);
2303 break;
2305 case JVM_CONSTANT_Double:
2306 SET_STACK_DOUBLE(constants->double_at(index), 1);
2307 break;
2308 default: ShouldNotReachHere();
2309 }
2310 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 2);
2311 }
2313 CASE(_fast_aldc_w):
2314 CASE(_fast_aldc): {
2315 u2 index;
2316 int incr;
2317 if (opcode == Bytecodes::_fast_aldc) {
2318 index = pc[1];
2319 incr = 2;
2320 } else {
2321 index = Bytes::get_native_u2(pc+1);
2322 incr = 3;
2323 }
2325 // We are resolved if the f1 field contains a non-null object (CallSite, etc.)
2326 // This kind of CP cache entry does not need to match the flags byte, because
2327 // there is a 1-1 relation between bytecode type and CP entry type.
2328 ConstantPool* constants = METHOD->constants();
2329 oop result = constants->resolved_references()->obj_at(index);
2330 if (result == NULL) {
2331 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode),
2332 handle_exception);
2333 result = THREAD->vm_result();
2334 }
2336 VERIFY_OOP(result);
2337 SET_STACK_OBJECT(result, 0);
2338 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1);
2339 }
2341 CASE(_invokedynamic): {
2343 if (!EnableInvokeDynamic) {
2344 // We should not encounter this bytecode if !EnableInvokeDynamic.
2345 // The verifier will stop it. However, if we get past the verifier,
2346 // this will stop the thread in a reasonable way, without crashing the JVM.
2347 CALL_VM(InterpreterRuntime::throw_IncompatibleClassChangeError(THREAD),
2348 handle_exception);
2349 ShouldNotReachHere();
2350 }
2352 u4 index = Bytes::get_native_u4(pc+1);
2353 ConstantPoolCacheEntry* cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index);
2355 // We are resolved if the resolved_references field contains a non-null object (CallSite, etc.)
2356 // This kind of CP cache entry does not need to match the flags byte, because
2357 // there is a 1-1 relation between bytecode type and CP entry type.
2358 if (! cache->is_resolved((Bytecodes::Code) opcode)) {
2359 CALL_VM(InterpreterRuntime::resolve_invokedynamic(THREAD),
2360 handle_exception);
2361 cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index);
2362 }
2364 Method* method = cache->f1_as_method();
2365 if (VerifyOops) method->verify();
2367 if (cache->has_appendix()) {
2368 ConstantPool* constants = METHOD->constants();
2369 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0);
2370 MORE_STACK(1);
2371 }
2373 istate->set_msg(call_method);
2374 istate->set_callee(method);
2375 istate->set_callee_entry_point(method->from_interpreted_entry());
2376 istate->set_bcp_advance(5);
2378 UPDATE_PC_AND_RETURN(0); // I'll be back...
2379 }
2381 CASE(_invokehandle): {
2383 if (!EnableInvokeDynamic) {
2384 ShouldNotReachHere();
2385 }
2387 u2 index = Bytes::get_native_u2(pc+1);
2388 ConstantPoolCacheEntry* cache = cp->entry_at(index);
2390 if (! cache->is_resolved((Bytecodes::Code) opcode)) {
2391 CALL_VM(InterpreterRuntime::resolve_invokehandle(THREAD),
2392 handle_exception);
2393 cache = cp->entry_at(index);
2394 }
2396 Method* method = cache->f1_as_method();
2397 if (VerifyOops) method->verify();
2399 if (cache->has_appendix()) {
2400 ConstantPool* constants = METHOD->constants();
2401 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0);
2402 MORE_STACK(1);
2403 }
2405 istate->set_msg(call_method);
2406 istate->set_callee(method);
2407 istate->set_callee_entry_point(method->from_interpreted_entry());
2408 istate->set_bcp_advance(3);
2410 UPDATE_PC_AND_RETURN(0); // I'll be back...
2411 }
2413 CASE(_invokeinterface): {
2414 u2 index = Bytes::get_native_u2(pc+1);
2416 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
2417 // out so c++ compiler has a chance for constant prop to fold everything possible away.
2419 ConstantPoolCacheEntry* cache = cp->entry_at(index);
2420 if (!cache->is_resolved((Bytecodes::Code)opcode)) {
2421 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode),
2422 handle_exception);
2423 cache = cp->entry_at(index);
2424 }
2426 istate->set_msg(call_method);
2428 // Special case of invokeinterface called for virtual method of
2429 // java.lang.Object. See cpCacheOop.cpp for details.
2430 // This code isn't produced by javac, but could be produced by
2431 // another compliant java compiler.
2432 if (cache->is_forced_virtual()) {
2433 Method* callee;
2434 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size())));
2435 if (cache->is_vfinal()) {
2436 callee = cache->f2_as_vfinal_method();
2437 } else {
2438 // get receiver
2439 int parms = cache->parameter_size();
2440 // Same comments as invokevirtual apply here
2441 VERIFY_OOP(STACK_OBJECT(-parms));
2442 InstanceKlass* rcvrKlass = (InstanceKlass*)
2443 STACK_OBJECT(-parms)->klass();
2444 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()];
2445 }
2446 istate->set_callee(callee);
2447 istate->set_callee_entry_point(callee->from_interpreted_entry());
2448 #ifdef VM_JVMTI
2449 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) {
2450 istate->set_callee_entry_point(callee->interpreter_entry());
2451 }
2452 #endif /* VM_JVMTI */
2453 istate->set_bcp_advance(5);
2454 UPDATE_PC_AND_RETURN(0); // I'll be back...
2455 }
2457 // this could definitely be cleaned up QQQ
2458 Method* callee;
2459 Klass* iclass = cache->f1_as_klass();
2460 // InstanceKlass* interface = (InstanceKlass*) iclass;
2461 // get receiver
2462 int parms = cache->parameter_size();
2463 oop rcvr = STACK_OBJECT(-parms);
2464 CHECK_NULL(rcvr);
2465 InstanceKlass* int2 = (InstanceKlass*) rcvr->klass();
2466 itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable();
2467 int i;
2468 for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) {
2469 if (ki->interface_klass() == iclass) break;
2470 }
2471 // If the interface isn't found, this class doesn't implement this
2472 // interface. The link resolver checks this but only for the first
2473 // time this interface is called.
2474 if (i == int2->itable_length()) {
2475 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), "");
2476 }
2477 int mindex = cache->f2_as_index();
2478 itableMethodEntry* im = ki->first_method_entry(rcvr->klass());
2479 callee = im[mindex].method();
2480 if (callee == NULL) {
2481 VM_JAVA_ERROR(vmSymbols::java_lang_AbstractMethodError(), "");
2482 }
2484 istate->set_callee(callee);
2485 istate->set_callee_entry_point(callee->from_interpreted_entry());
2486 #ifdef VM_JVMTI
2487 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) {
2488 istate->set_callee_entry_point(callee->interpreter_entry());
2489 }
2490 #endif /* VM_JVMTI */
2491 istate->set_bcp_advance(5);
2492 UPDATE_PC_AND_RETURN(0); // I'll be back...
2493 }
2495 CASE(_invokevirtual):
2496 CASE(_invokespecial):
2497 CASE(_invokestatic): {
2498 u2 index = Bytes::get_native_u2(pc+1);
2500 ConstantPoolCacheEntry* cache = cp->entry_at(index);
2501 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
2502 // out so c++ compiler has a chance for constant prop to fold everything possible away.
2504 if (!cache->is_resolved((Bytecodes::Code)opcode)) {
2505 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode),
2506 handle_exception);
2507 cache = cp->entry_at(index);
2508 }
2510 istate->set_msg(call_method);
2511 {
2512 Method* callee;
2513 if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) {
2514 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size())));
2515 if (cache->is_vfinal()) callee = cache->f2_as_vfinal_method();
2516 else {
2517 // get receiver
2518 int parms = cache->parameter_size();
2519 // this works but needs a resourcemark and seems to create a vtable on every call:
2520 // Method* callee = rcvr->klass()->vtable()->method_at(cache->f2_as_index());
2521 //
2522 // this fails with an assert
2523 // InstanceKlass* rcvrKlass = InstanceKlass::cast(STACK_OBJECT(-parms)->klass());
2524 // but this works
2525 VERIFY_OOP(STACK_OBJECT(-parms));
2526 InstanceKlass* rcvrKlass = (InstanceKlass*) STACK_OBJECT(-parms)->klass();
2527 /*
2528 Executing this code in java.lang.String:
2529 public String(char value[]) {
2530 this.count = value.length;
2531 this.value = (char[])value.clone();
2532 }
2534 a find on rcvr->klass() reports:
2535 {type array char}{type array class}
2536 - klass: {other class}
2538 but using InstanceKlass::cast(STACK_OBJECT(-parms)->klass()) causes in assertion failure
2539 because rcvr->klass()->oop_is_instance() == 0
2540 However it seems to have a vtable in the right location. Huh?
2542 */
2543 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()];
2544 }
2545 } else {
2546 if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) {
2547 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size())));
2548 }
2549 callee = cache->f1_as_method();
2550 }
2552 istate->set_callee(callee);
2553 istate->set_callee_entry_point(callee->from_interpreted_entry());
2554 #ifdef VM_JVMTI
2555 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) {
2556 istate->set_callee_entry_point(callee->interpreter_entry());
2557 }
2558 #endif /* VM_JVMTI */
2559 istate->set_bcp_advance(3);
2560 UPDATE_PC_AND_RETURN(0); // I'll be back...
2561 }
2562 }
2564 /* Allocate memory for a new java object. */
2566 CASE(_newarray): {
2567 BasicType atype = (BasicType) *(pc+1);
2568 jint size = STACK_INT(-1);
2569 CALL_VM(InterpreterRuntime::newarray(THREAD, atype, size),
2570 handle_exception);
2571 SET_STACK_OBJECT(THREAD->vm_result(), -1);
2572 THREAD->set_vm_result(NULL);
2574 UPDATE_PC_AND_CONTINUE(2);
2575 }
2577 /* Throw an exception. */
2579 CASE(_athrow): {
2580 oop except_oop = STACK_OBJECT(-1);
2581 CHECK_NULL(except_oop);
2582 // set pending_exception so we use common code
2583 THREAD->set_pending_exception(except_oop, NULL, 0);
2584 goto handle_exception;
2585 }
2587 /* goto and jsr. They are exactly the same except jsr pushes
2588 * the address of the next instruction first.
2589 */
2591 CASE(_jsr): {
2592 /* push bytecode index on stack */
2593 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 3), 0);
2594 MORE_STACK(1);
2595 /* FALL THROUGH */
2596 }
2598 CASE(_goto):
2599 {
2600 int16_t offset = (int16_t)Bytes::get_Java_u2(pc + 1);
2601 address branch_pc = pc;
2602 UPDATE_PC(offset);
2603 DO_BACKEDGE_CHECKS(offset, branch_pc);
2604 CONTINUE;
2605 }
2607 CASE(_jsr_w): {
2608 /* push return address on the stack */
2609 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 5), 0);
2610 MORE_STACK(1);
2611 /* FALL THROUGH */
2612 }
2614 CASE(_goto_w):
2615 {
2616 int32_t offset = Bytes::get_Java_u4(pc + 1);
2617 address branch_pc = pc;
2618 UPDATE_PC(offset);
2619 DO_BACKEDGE_CHECKS(offset, branch_pc);
2620 CONTINUE;
2621 }
2623 /* return from a jsr or jsr_w */
2625 CASE(_ret): {
2626 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(pc[1]));
2627 UPDATE_PC_AND_CONTINUE(0);
2628 }
2630 /* debugger breakpoint */
2632 CASE(_breakpoint): {
2633 Bytecodes::Code original_bytecode;
2634 DECACHE_STATE();
2635 SET_LAST_JAVA_FRAME();
2636 original_bytecode = InterpreterRuntime::get_original_bytecode_at(THREAD,
2637 METHOD, pc);
2638 RESET_LAST_JAVA_FRAME();
2639 CACHE_STATE();
2640 if (THREAD->has_pending_exception()) goto handle_exception;
2641 CALL_VM(InterpreterRuntime::_breakpoint(THREAD, METHOD, pc),
2642 handle_exception);
2644 opcode = (jubyte)original_bytecode;
2645 goto opcode_switch;
2646 }
2648 DEFAULT:
2649 fatal(err_msg("Unimplemented opcode %d = %s", opcode,
2650 Bytecodes::name((Bytecodes::Code)opcode)));
2651 goto finish;
2653 } /* switch(opc) */
2656 #ifdef USELABELS
2657 check_for_exception:
2658 #endif
2659 {
2660 if (!THREAD->has_pending_exception()) {
2661 CONTINUE;
2662 }
2663 /* We will be gcsafe soon, so flush our state. */
2664 DECACHE_PC();
2665 goto handle_exception;
2666 }
2667 do_continue: ;
2669 } /* while (1) interpreter loop */
2672 // An exception exists in the thread state see whether this activation can handle it
2673 handle_exception: {
2675 HandleMarkCleaner __hmc(THREAD);
2676 Handle except_oop(THREAD, THREAD->pending_exception());
2677 // Prevent any subsequent HandleMarkCleaner in the VM
2678 // from freeing the except_oop handle.
2679 HandleMark __hm(THREAD);
2681 THREAD->clear_pending_exception();
2682 assert(except_oop(), "No exception to process");
2683 intptr_t continuation_bci;
2684 // expression stack is emptied
2685 topOfStack = istate->stack_base() - Interpreter::stackElementWords;
2686 CALL_VM(continuation_bci = (intptr_t)InterpreterRuntime::exception_handler_for_exception(THREAD, except_oop()),
2687 handle_exception);
2689 except_oop = THREAD->vm_result();
2690 THREAD->set_vm_result(NULL);
2691 if (continuation_bci >= 0) {
2692 // Place exception on top of stack
2693 SET_STACK_OBJECT(except_oop(), 0);
2694 MORE_STACK(1);
2695 pc = METHOD->code_base() + continuation_bci;
2696 if (TraceExceptions) {
2697 ttyLocker ttyl;
2698 ResourceMark rm;
2699 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop());
2700 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string());
2701 tty->print_cr(" at bci %d, continuing at %d for thread " INTPTR_FORMAT,
2702 pc - (intptr_t)METHOD->code_base(),
2703 continuation_bci, THREAD);
2704 }
2705 // for AbortVMOnException flag
2706 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop));
2707 goto run;
2708 }
2709 if (TraceExceptions) {
2710 ttyLocker ttyl;
2711 ResourceMark rm;
2712 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop());
2713 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string());
2714 tty->print_cr(" at bci %d, unwinding for thread " INTPTR_FORMAT,
2715 pc - (intptr_t) METHOD->code_base(),
2716 THREAD);
2717 }
2718 // for AbortVMOnException flag
2719 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop));
2720 // No handler in this activation, unwind and try again
2721 THREAD->set_pending_exception(except_oop(), NULL, 0);
2722 goto handle_return;
2723 } // handle_exception:
2725 // Return from an interpreter invocation with the result of the interpretation
2726 // on the top of the Java Stack (or a pending exception)
2728 handle_Pop_Frame: {
2730 // We don't really do anything special here except we must be aware
2731 // that we can get here without ever locking the method (if sync).
2732 // Also we skip the notification of the exit.
2734 istate->set_msg(popping_frame);
2735 // Clear pending so while the pop is in process
2736 // we don't start another one if a call_vm is done.
2737 THREAD->clr_pop_frame_pending();
2738 // Let interpreter (only) see the we're in the process of popping a frame
2739 THREAD->set_pop_frame_in_process();
2741 goto handle_return;
2743 } // handle_Pop_Frame
2745 // ForceEarlyReturn ends a method, and returns to the caller with a return value
2746 // given by the invoker of the early return.
2747 handle_Early_Return: {
2749 istate->set_msg(early_return);
2751 // Clear expression stack.
2752 topOfStack = istate->stack_base() - Interpreter::stackElementWords;
2754 JvmtiThreadState *ts = THREAD->jvmti_thread_state();
2756 // Push the value to be returned.
2757 switch (istate->method()->result_type()) {
2758 case T_BOOLEAN:
2759 case T_SHORT:
2760 case T_BYTE:
2761 case T_CHAR:
2762 case T_INT:
2763 SET_STACK_INT(->earlyret_value().i, 0);
2764 MORE_STACK(1);
2765 break;
2766 case T_LONG:
2767 SET_STACK_LONG(ts->earlyret_value().j, 1);
2768 MORE_STACK(2);
2769 break;
2770 case T_FLOAT:
2771 SET_STACK_FLOAT(ts->earlyret_value().f, 0);
2772 MORE_STACK(1);
2773 break;
2774 case T_DOUBLE:
2775 SET_STACK_DOUBLE(ts->earlyret_value().d, 1);
2776 MORE_STACK(2);
2777 break;
2778 case T_ARRAY:
2779 case T_OBJECT:
2780 SET_STACK_OBJECT(ts->earlyret_oop(), 0);
2781 MORE_STACK(1);
2782 break;
2783 }
2785 ts->clr_earlyret_value();
2786 ts->set_earlyret_oop(NULL);
2787 ts->clr_earlyret_pending();
2789 // Fall through to handle_return.
2791 } // handle_Early_Return
2793 handle_return: {
2794 DECACHE_STATE();
2796 bool suppress_error = istate->msg() == popping_frame || istate->msg() == early_return;
2797 bool suppress_exit_event = THREAD->has_pending_exception() || istate->msg() == popping_frame;
2798 Handle original_exception(THREAD, THREAD->pending_exception());
2799 Handle illegal_state_oop(THREAD, NULL);
2801 // We'd like a HandleMark here to prevent any subsequent HandleMarkCleaner
2802 // in any following VM entries from freeing our live handles, but illegal_state_oop
2803 // isn't really allocated yet and so doesn't become live until later and
2804 // in unpredicatable places. Instead we must protect the places where we enter the
2805 // VM. It would be much simpler (and safer) if we could allocate a real handle with
2806 // a NULL oop in it and then overwrite the oop later as needed. This isn't
2807 // unfortunately isn't possible.
2809 THREAD->clear_pending_exception();
2811 //
2812 // As far as we are concerned we have returned. If we have a pending exception
2813 // that will be returned as this invocation's result. However if we get any
2814 // exception(s) while checking monitor state one of those IllegalMonitorStateExceptions
2815 // will be our final result (i.e. monitor exception trumps a pending exception).
2816 //
2818 // If we never locked the method (or really passed the point where we would have),
2819 // there is no need to unlock it (or look for other monitors), since that
2820 // could not have happened.
2822 if (THREAD->do_not_unlock()) {
2824 // Never locked, reset the flag now because obviously any caller must
2825 // have passed their point of locking for us to have gotten here.
2827 THREAD->clr_do_not_unlock();
2828 } else {
2829 // At this point we consider that we have returned. We now check that the
2830 // locks were properly block structured. If we find that they were not
2831 // used properly we will return with an illegal monitor exception.
2832 // The exception is checked by the caller not the callee since this
2833 // checking is considered to be part of the invocation and therefore
2834 // in the callers scope (JVM spec 8.13).
2835 //
2836 // Another weird thing to watch for is if the method was locked
2837 // recursively and then not exited properly. This means we must
2838 // examine all the entries in reverse time(and stack) order and
2839 // unlock as we find them. If we find the method monitor before
2840 // we are at the initial entry then we should throw an exception.
2841 // It is not clear the template based interpreter does this
2842 // correctly
2844 BasicObjectLock* base = istate->monitor_base();
2845 BasicObjectLock* end = (BasicObjectLock*) istate->stack_base();
2846 bool method_unlock_needed = METHOD->is_synchronized();
2847 // We know the initial monitor was used for the method don't check that
2848 // slot in the loop
2849 if (method_unlock_needed) base--;
2851 // Check all the monitors to see they are unlocked. Install exception if found to be locked.
2852 while (end < base) {
2853 oop lockee = end->obj();
2854 if (lockee != NULL) {
2855 BasicLock* lock = end->lock();
2856 markOop header = lock->displaced_header();
2857 end->set_obj(NULL);
2859 if (!lockee->mark()->has_bias_pattern()) {
2860 // If it isn't recursive we either must swap old header or call the runtime
2861 if (header != NULL) {
2862 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) {
2863 // restore object for the slow case
2864 end->set_obj(lockee);
2865 {
2866 // Prevent any HandleMarkCleaner from freeing our live handles
2867 HandleMark __hm(THREAD);
2868 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, end));
2869 }
2870 }
2871 }
2872 }
2873 // One error is plenty
2874 if (illegal_state_oop() == NULL && !suppress_error) {
2875 {
2876 // Prevent any HandleMarkCleaner from freeing our live handles
2877 HandleMark __hm(THREAD);
2878 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD));
2879 }
2880 assert(THREAD->has_pending_exception(), "Lost our exception!");
2881 illegal_state_oop = THREAD->pending_exception();
2882 THREAD->clear_pending_exception();
2883 }
2884 }
2885 end++;
2886 }
2887 // Unlock the method if needed
2888 if (method_unlock_needed) {
2889 if (base->obj() == NULL) {
2890 // The method is already unlocked this is not good.
2891 if (illegal_state_oop() == NULL && !suppress_error) {
2892 {
2893 // Prevent any HandleMarkCleaner from freeing our live handles
2894 HandleMark __hm(THREAD);
2895 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD));
2896 }
2897 assert(THREAD->has_pending_exception(), "Lost our exception!");
2898 illegal_state_oop = THREAD->pending_exception();
2899 THREAD->clear_pending_exception();
2900 }
2901 } else {
2902 //
2903 // The initial monitor is always used for the method
2904 // However if that slot is no longer the oop for the method it was unlocked
2905 // and reused by something that wasn't unlocked!
2906 //
2907 // deopt can come in with rcvr dead because c2 knows
2908 // its value is preserved in the monitor. So we can't use locals[0] at all
2909 // and must use first monitor slot.
2910 //
2911 oop rcvr = base->obj();
2912 if (rcvr == NULL) {
2913 if (!suppress_error) {
2914 VM_JAVA_ERROR_NO_JUMP(vmSymbols::java_lang_NullPointerException(), "");
2915 illegal_state_oop = THREAD->pending_exception();
2916 THREAD->clear_pending_exception();
2917 }
2918 } else if (UseHeavyMonitors) {
2919 {
2920 // Prevent any HandleMarkCleaner from freeing our live handles.
2921 HandleMark __hm(THREAD);
2922 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base));
2923 }
2924 if (THREAD->has_pending_exception()) {
2925 if (!suppress_error) illegal_state_oop = THREAD->pending_exception();
2926 THREAD->clear_pending_exception();
2927 }
2928 } else {
2929 BasicLock* lock = base->lock();
2930 markOop header = lock->displaced_header();
2931 base->set_obj(NULL);
2933 if (!rcvr->mark()->has_bias_pattern()) {
2934 base->set_obj(NULL);
2935 // If it isn't recursive we either must swap old header or call the runtime
2936 if (header != NULL) {
2937 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) {
2938 // restore object for the slow case
2939 base->set_obj(rcvr);
2940 {
2941 // Prevent any HandleMarkCleaner from freeing our live handles
2942 HandleMark __hm(THREAD);
2943 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base));
2944 }
2945 if (THREAD->has_pending_exception()) {
2946 if (!suppress_error) illegal_state_oop = THREAD->pending_exception();
2947 THREAD->clear_pending_exception();
2948 }
2949 }
2950 }
2951 }
2952 }
2953 }
2954 }
2955 }
2956 // Clear the do_not_unlock flag now.
2957 THREAD->clr_do_not_unlock();
2959 //
2960 // Notify jvmti/jvmdi
2961 //
2962 // NOTE: we do not notify a method_exit if we have a pending exception,
2963 // including an exception we generate for unlocking checks. In the former
2964 // case, JVMDI has already been notified by our call for the exception handler
2965 // and in both cases as far as JVMDI is concerned we have already returned.
2966 // If we notify it again JVMDI will be all confused about how many frames
2967 // are still on the stack (4340444).
2968 //
2969 // NOTE Further! It turns out the the JVMTI spec in fact expects to see
2970 // method_exit events whenever we leave an activation unless it was done
2971 // for popframe. This is nothing like jvmdi. However we are passing the
2972 // tests at the moment (apparently because they are jvmdi based) so rather
2973 // than change this code and possibly fail tests we will leave it alone
2974 // (with this note) in anticipation of changing the vm and the tests
2975 // simultaneously.
2978 //
2979 suppress_exit_event = suppress_exit_event || illegal_state_oop() != NULL;
2983 #ifdef VM_JVMTI
2984 if (_jvmti_interp_events) {
2985 // Whenever JVMTI puts a thread in interp_only_mode, method
2986 // entry/exit events are sent for that thread to track stack depth.
2987 if ( !suppress_exit_event && THREAD->is_interp_only_mode() ) {
2988 {
2989 // Prevent any HandleMarkCleaner from freeing our live handles
2990 HandleMark __hm(THREAD);
2991 CALL_VM_NOCHECK(InterpreterRuntime::post_method_exit(THREAD));
2992 }
2993 }
2994 }
2995 #endif /* VM_JVMTI */
2997 //
2998 // See if we are returning any exception
2999 // A pending exception that was pending prior to a possible popping frame
3000 // overrides the popping frame.
3001 //
3002 assert(!suppress_error || suppress_error && illegal_state_oop() == NULL, "Error was not suppressed");
3003 if (illegal_state_oop() != NULL || original_exception() != NULL) {
3004 // inform the frame manager we have no result
3005 istate->set_msg(throwing_exception);
3006 if (illegal_state_oop() != NULL)
3007 THREAD->set_pending_exception(illegal_state_oop(), NULL, 0);
3008 else
3009 THREAD->set_pending_exception(original_exception(), NULL, 0);
3010 UPDATE_PC_AND_RETURN(0);
3011 }
3013 if (istate->msg() == popping_frame) {
3014 // Make it simpler on the assembly code and set the message for the frame pop.
3015 // returns
3016 if (istate->prev() == NULL) {
3017 // We must be returning to a deoptimized frame (because popframe only happens between
3018 // two interpreted frames). We need to save the current arguments in C heap so that
3019 // the deoptimized frame when it restarts can copy the arguments to its expression
3020 // stack and re-execute the call. We also have to notify deoptimization that this
3021 // has occurred and to pick the preserved args copy them to the deoptimized frame's
3022 // java expression stack. Yuck.
3023 //
3024 THREAD->popframe_preserve_args(in_ByteSize(METHOD->size_of_parameters() * wordSize),
3025 LOCALS_SLOT(METHOD->size_of_parameters() - 1));
3026 THREAD->set_popframe_condition_bit(JavaThread::popframe_force_deopt_reexecution_bit);
3027 }
3028 } else {
3029 istate->set_msg(return_from_method);
3030 }
3032 // Normal return
3033 // Advance the pc and return to frame manager
3034 UPDATE_PC_AND_RETURN(1);
3035 } /* handle_return: */
3037 // This is really a fatal error return
3039 finish:
3040 DECACHE_TOS();
3041 DECACHE_PC();
3043 return;
3044 }
3046 /*
3047 * All the code following this point is only produced once and is not present
3048 * in the JVMTI version of the interpreter
3049 */
3051 #ifndef VM_JVMTI
3053 // This constructor should only be used to contruct the object to signal
3054 // interpreter initialization. All other instances should be created by
3055 // the frame manager.
3056 BytecodeInterpreter::BytecodeInterpreter(messages msg) {
3057 if (msg != initialize) ShouldNotReachHere();
3058 _msg = msg;
3059 _self_link = this;
3060 _prev_link = NULL;
3061 }
3063 // Inline static functions for Java Stack and Local manipulation
3065 // The implementations are platform dependent. We have to worry about alignment
3066 // issues on some machines which can change on the same platform depending on
3067 // whether it is an LP64 machine also.
3068 address BytecodeInterpreter::stack_slot(intptr_t *tos, int offset) {
3069 return (address) tos[Interpreter::expr_index_at(-offset)];
3070 }
3072 jint BytecodeInterpreter::stack_int(intptr_t *tos, int offset) {
3073 return *((jint*) &tos[Interpreter::expr_index_at(-offset)]);
3074 }
3076 jfloat BytecodeInterpreter::stack_float(intptr_t *tos, int offset) {
3077 return *((jfloat *) &tos[Interpreter::expr_index_at(-offset)]);
3078 }
3080 oop BytecodeInterpreter::stack_object(intptr_t *tos, int offset) {
3081 return (oop)tos [Interpreter::expr_index_at(-offset)];
3082 }
3084 jdouble BytecodeInterpreter::stack_double(intptr_t *tos, int offset) {
3085 return ((VMJavaVal64*) &tos[Interpreter::expr_index_at(-offset)])->d;
3086 }
3088 jlong BytecodeInterpreter::stack_long(intptr_t *tos, int offset) {
3089 return ((VMJavaVal64 *) &tos[Interpreter::expr_index_at(-offset)])->l;
3090 }
3092 // only used for value types
3093 void BytecodeInterpreter::set_stack_slot(intptr_t *tos, address value,
3094 int offset) {
3095 *((address *)&tos[Interpreter::expr_index_at(-offset)]) = value;
3096 }
3098 void BytecodeInterpreter::set_stack_int(intptr_t *tos, int value,
3099 int offset) {
3100 *((jint *)&tos[Interpreter::expr_index_at(-offset)]) = value;
3101 }
3103 void BytecodeInterpreter::set_stack_float(intptr_t *tos, jfloat value,
3104 int offset) {
3105 *((jfloat *)&tos[Interpreter::expr_index_at(-offset)]) = value;
3106 }
3108 void BytecodeInterpreter::set_stack_object(intptr_t *tos, oop value,
3109 int offset) {
3110 *((oop *)&tos[Interpreter::expr_index_at(-offset)]) = value;
3111 }
3113 // needs to be platform dep for the 32 bit platforms.
3114 void BytecodeInterpreter::set_stack_double(intptr_t *tos, jdouble value,
3115 int offset) {
3116 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = value;
3117 }
3119 void BytecodeInterpreter::set_stack_double_from_addr(intptr_t *tos,
3120 address addr, int offset) {
3121 (((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d =
3122 ((VMJavaVal64*)addr)->d);
3123 }
3125 void BytecodeInterpreter::set_stack_long(intptr_t *tos, jlong value,
3126 int offset) {
3127 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb;
3128 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = value;
3129 }
3131 void BytecodeInterpreter::set_stack_long_from_addr(intptr_t *tos,
3132 address addr, int offset) {
3133 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb;
3134 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l =
3135 ((VMJavaVal64*)addr)->l;
3136 }
3138 // Locals
3140 address BytecodeInterpreter::locals_slot(intptr_t* locals, int offset) {
3141 return (address)locals[Interpreter::local_index_at(-offset)];
3142 }
3143 jint BytecodeInterpreter::locals_int(intptr_t* locals, int offset) {
3144 return (jint)locals[Interpreter::local_index_at(-offset)];
3145 }
3146 jfloat BytecodeInterpreter::locals_float(intptr_t* locals, int offset) {
3147 return (jfloat)locals[Interpreter::local_index_at(-offset)];
3148 }
3149 oop BytecodeInterpreter::locals_object(intptr_t* locals, int offset) {
3150 return (oop)locals[Interpreter::local_index_at(-offset)];
3151 }
3152 jdouble BytecodeInterpreter::locals_double(intptr_t* locals, int offset) {
3153 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d;
3154 }
3155 jlong BytecodeInterpreter::locals_long(intptr_t* locals, int offset) {
3156 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l;
3157 }
3159 // Returns the address of locals value.
3160 address BytecodeInterpreter::locals_long_at(intptr_t* locals, int offset) {
3161 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]);
3162 }
3163 address BytecodeInterpreter::locals_double_at(intptr_t* locals, int offset) {
3164 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]);
3165 }
3167 // Used for local value or returnAddress
3168 void BytecodeInterpreter::set_locals_slot(intptr_t *locals,
3169 address value, int offset) {
3170 *((address*)&locals[Interpreter::local_index_at(-offset)]) = value;
3171 }
3172 void BytecodeInterpreter::set_locals_int(intptr_t *locals,
3173 jint value, int offset) {
3174 *((jint *)&locals[Interpreter::local_index_at(-offset)]) = value;
3175 }
3176 void BytecodeInterpreter::set_locals_float(intptr_t *locals,
3177 jfloat value, int offset) {
3178 *((jfloat *)&locals[Interpreter::local_index_at(-offset)]) = value;
3179 }
3180 void BytecodeInterpreter::set_locals_object(intptr_t *locals,
3181 oop value, int offset) {
3182 *((oop *)&locals[Interpreter::local_index_at(-offset)]) = value;
3183 }
3184 void BytecodeInterpreter::set_locals_double(intptr_t *locals,
3185 jdouble value, int offset) {
3186 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = value;
3187 }
3188 void BytecodeInterpreter::set_locals_long(intptr_t *locals,
3189 jlong value, int offset) {
3190 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = value;
3191 }
3192 void BytecodeInterpreter::set_locals_double_from_addr(intptr_t *locals,
3193 address addr, int offset) {
3194 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = ((VMJavaVal64*)addr)->d;
3195 }
3196 void BytecodeInterpreter::set_locals_long_from_addr(intptr_t *locals,
3197 address addr, int offset) {
3198 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = ((VMJavaVal64*)addr)->l;
3199 }
3201 void BytecodeInterpreter::astore(intptr_t* tos, int stack_offset,
3202 intptr_t* locals, int locals_offset) {
3203 intptr_t value = tos[Interpreter::expr_index_at(-stack_offset)];
3204 locals[Interpreter::local_index_at(-locals_offset)] = value;
3205 }
3208 void BytecodeInterpreter::copy_stack_slot(intptr_t *tos, int from_offset,
3209 int to_offset) {
3210 tos[Interpreter::expr_index_at(-to_offset)] =
3211 (intptr_t)tos[Interpreter::expr_index_at(-from_offset)];
3212 }
3214 void BytecodeInterpreter::dup(intptr_t *tos) {
3215 copy_stack_slot(tos, -1, 0);
3216 }
3217 void BytecodeInterpreter::dup2(intptr_t *tos) {
3218 copy_stack_slot(tos, -2, 0);
3219 copy_stack_slot(tos, -1, 1);
3220 }
3222 void BytecodeInterpreter::dup_x1(intptr_t *tos) {
3223 /* insert top word two down */
3224 copy_stack_slot(tos, -1, 0);
3225 copy_stack_slot(tos, -2, -1);
3226 copy_stack_slot(tos, 0, -2);
3227 }
3229 void BytecodeInterpreter::dup_x2(intptr_t *tos) {
3230 /* insert top word three down */
3231 copy_stack_slot(tos, -1, 0);
3232 copy_stack_slot(tos, -2, -1);
3233 copy_stack_slot(tos, -3, -2);
3234 copy_stack_slot(tos, 0, -3);
3235 }
3236 void BytecodeInterpreter::dup2_x1(intptr_t *tos) {
3237 /* insert top 2 slots three down */
3238 copy_stack_slot(tos, -1, 1);
3239 copy_stack_slot(tos, -2, 0);
3240 copy_stack_slot(tos, -3, -1);
3241 copy_stack_slot(tos, 1, -2);
3242 copy_stack_slot(tos, 0, -3);
3243 }
3244 void BytecodeInterpreter::dup2_x2(intptr_t *tos) {
3245 /* insert top 2 slots four down */
3246 copy_stack_slot(tos, -1, 1);
3247 copy_stack_slot(tos, -2, 0);
3248 copy_stack_slot(tos, -3, -1);
3249 copy_stack_slot(tos, -4, -2);
3250 copy_stack_slot(tos, 1, -3);
3251 copy_stack_slot(tos, 0, -4);
3252 }
3255 void BytecodeInterpreter::swap(intptr_t *tos) {
3256 // swap top two elements
3257 intptr_t val = tos[Interpreter::expr_index_at(1)];
3258 // Copy -2 entry to -1
3259 copy_stack_slot(tos, -2, -1);
3260 // Store saved -1 entry into -2
3261 tos[Interpreter::expr_index_at(2)] = val;
3262 }
3263 // --------------------------------------------------------------------------------
3264 // Non-product code
3265 #ifndef PRODUCT
3267 const char* BytecodeInterpreter::C_msg(BytecodeInterpreter::messages msg) {
3268 switch (msg) {
3269 case BytecodeInterpreter::no_request: return("no_request");
3270 case BytecodeInterpreter::initialize: return("initialize");
3271 // status message to C++ interpreter
3272 case BytecodeInterpreter::method_entry: return("method_entry");
3273 case BytecodeInterpreter::method_resume: return("method_resume");
3274 case BytecodeInterpreter::got_monitors: return("got_monitors");
3275 case BytecodeInterpreter::rethrow_exception: return("rethrow_exception");
3276 // requests to frame manager from C++ interpreter
3277 case BytecodeInterpreter::call_method: return("call_method");
3278 case BytecodeInterpreter::return_from_method: return("return_from_method");
3279 case BytecodeInterpreter::more_monitors: return("more_monitors");
3280 case BytecodeInterpreter::throwing_exception: return("throwing_exception");
3281 case BytecodeInterpreter::popping_frame: return("popping_frame");
3282 case BytecodeInterpreter::do_osr: return("do_osr");
3283 // deopt
3284 case BytecodeInterpreter::deopt_resume: return("deopt_resume");
3285 case BytecodeInterpreter::deopt_resume2: return("deopt_resume2");
3286 default: return("BAD MSG");
3287 }
3288 }
3289 void
3290 BytecodeInterpreter::print() {
3291 tty->print_cr("thread: " INTPTR_FORMAT, (uintptr_t) this->_thread);
3292 tty->print_cr("bcp: " INTPTR_FORMAT, (uintptr_t) this->_bcp);
3293 tty->print_cr("locals: " INTPTR_FORMAT, (uintptr_t) this->_locals);
3294 tty->print_cr("constants: " INTPTR_FORMAT, (uintptr_t) this->_constants);
3295 {
3296 ResourceMark rm;
3297 char *method_name = _method->name_and_sig_as_C_string();
3298 tty->print_cr("method: " INTPTR_FORMAT "[ %s ]", (uintptr_t) this->_method, method_name);
3299 }
3300 tty->print_cr("mdx: " INTPTR_FORMAT, (uintptr_t) this->_mdx);
3301 tty->print_cr("stack: " INTPTR_FORMAT, (uintptr_t) this->_stack);
3302 tty->print_cr("msg: %s", C_msg(this->_msg));
3303 tty->print_cr("result_to_call._callee: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee);
3304 tty->print_cr("result_to_call._callee_entry_point: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee_entry_point);
3305 tty->print_cr("result_to_call._bcp_advance: %d ", this->_result._to_call._bcp_advance);
3306 tty->print_cr("osr._osr_buf: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_buf);
3307 tty->print_cr("osr._osr_entry: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_entry);
3308 tty->print_cr("prev_link: " INTPTR_FORMAT, (uintptr_t) this->_prev_link);
3309 tty->print_cr("native_mirror: " INTPTR_FORMAT, (uintptr_t) this->_oop_temp);
3310 tty->print_cr("stack_base: " INTPTR_FORMAT, (uintptr_t) this->_stack_base);
3311 tty->print_cr("stack_limit: " INTPTR_FORMAT, (uintptr_t) this->_stack_limit);
3312 tty->print_cr("monitor_base: " INTPTR_FORMAT, (uintptr_t) this->_monitor_base);
3313 #ifdef SPARC
3314 tty->print_cr("last_Java_pc: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_pc);
3315 tty->print_cr("frame_bottom: " INTPTR_FORMAT, (uintptr_t) this->_frame_bottom);
3316 tty->print_cr("&native_fresult: " INTPTR_FORMAT, (uintptr_t) &this->_native_fresult);
3317 tty->print_cr("native_lresult: " INTPTR_FORMAT, (uintptr_t) this->_native_lresult);
3318 #endif
3319 #if !defined(ZERO)
3320 tty->print_cr("last_Java_fp: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_fp);
3321 #endif // !ZERO
3322 tty->print_cr("self_link: " INTPTR_FORMAT, (uintptr_t) this->_self_link);
3323 }
3325 extern "C" {
3326 void PI(uintptr_t arg) {
3327 ((BytecodeInterpreter*)arg)->print();
3328 }
3329 }
3330 #endif // PRODUCT
3332 #endif // JVMTI
3333 #endif // CC_INTERP
