Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeInterpreter.cpp @ 614:3db67f76d308
Merge
author | acorn |
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date | Thu, 05 Mar 2009 22:07:29 -0500 |
parents | 98cb887364d3 |
children | 7bb995fbd3c0 |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 2002-2008 Sun Microsystems, Inc. All Rights Reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 | |
26 // no precompiled headers | |
27 #include "incls/_bytecodeInterpreter.cpp.incl" | |
28 | |
29 #ifdef CC_INTERP | |
30 | |
31 /* | |
32 * USELABELS - If using GCC, then use labels for the opcode dispatching | |
33 * rather -then a switch statement. This improves performance because it | |
34 * gives us the oportunity to have the instructions that calculate the | |
35 * next opcode to jump to be intermixed with the rest of the instructions | |
36 * that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro). | |
37 */ | |
38 #undef USELABELS | |
39 #ifdef __GNUC__ | |
40 /* | |
41 ASSERT signifies debugging. It is much easier to step thru bytecodes if we | |
42 don't use the computed goto approach. | |
43 */ | |
44 #ifndef ASSERT | |
45 #define USELABELS | |
46 #endif | |
47 #endif | |
48 | |
49 #undef CASE | |
50 #ifdef USELABELS | |
51 #define CASE(opcode) opc ## opcode | |
52 #define DEFAULT opc_default | |
53 #else | |
54 #define CASE(opcode) case Bytecodes:: opcode | |
55 #define DEFAULT default | |
56 #endif | |
57 | |
58 /* | |
59 * PREFETCH_OPCCODE - Some compilers do better if you prefetch the next | |
60 * opcode before going back to the top of the while loop, rather then having | |
61 * the top of the while loop handle it. This provides a better opportunity | |
62 * for instruction scheduling. Some compilers just do this prefetch | |
63 * automatically. Some actually end up with worse performance if you | |
64 * force the prefetch. Solaris gcc seems to do better, but cc does worse. | |
65 */ | |
66 #undef PREFETCH_OPCCODE | |
67 #define PREFETCH_OPCCODE | |
68 | |
69 /* | |
70 Interpreter safepoint: it is expected that the interpreter will have no live | |
71 handles of its own creation live at an interpreter safepoint. Therefore we | |
72 run a HandleMarkCleaner and trash all handles allocated in the call chain | |
73 since the JavaCalls::call_helper invocation that initiated the chain. | |
74 There really shouldn't be any handles remaining to trash but this is cheap | |
75 in relation to a safepoint. | |
76 */ | |
77 #define SAFEPOINT \ | |
78 if ( SafepointSynchronize::is_synchronizing()) { \ | |
79 { \ | |
80 /* zap freed handles rather than GC'ing them */ \ | |
81 HandleMarkCleaner __hmc(THREAD); \ | |
82 } \ | |
83 CALL_VM(SafepointSynchronize::block(THREAD), handle_exception); \ | |
84 } | |
85 | |
86 /* | |
87 * VM_JAVA_ERROR - Macro for throwing a java exception from | |
88 * the interpreter loop. Should really be a CALL_VM but there | |
89 * is no entry point to do the transition to vm so we just | |
90 * do it by hand here. | |
91 */ | |
92 #define VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
93 DECACHE_STATE(); \ | |
94 SET_LAST_JAVA_FRAME(); \ | |
95 { \ | |
96 ThreadInVMfromJava trans(THREAD); \ | |
97 Exceptions::_throw_msg(THREAD, __FILE__, __LINE__, name, msg); \ | |
98 } \ | |
99 RESET_LAST_JAVA_FRAME(); \ | |
100 CACHE_STATE(); | |
101 | |
102 // Normal throw of a java error | |
103 #define VM_JAVA_ERROR(name, msg) \ | |
104 VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
105 goto handle_exception; | |
106 | |
107 #ifdef PRODUCT | |
108 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) | |
109 #else | |
110 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) \ | |
111 { \ | |
112 BytecodeCounter::_counter_value++; \ | |
113 BytecodeHistogram::_counters[(Bytecodes::Code)opcode]++; \ | |
114 if (StopInterpreterAt && StopInterpreterAt == BytecodeCounter::_counter_value) os::breakpoint(); \ | |
115 if (TraceBytecodes) { \ | |
116 CALL_VM((void)SharedRuntime::trace_bytecode(THREAD, 0, \ | |
117 topOfStack[Interpreter::expr_index_at(1)], \ | |
118 topOfStack[Interpreter::expr_index_at(2)]), \ | |
119 handle_exception); \ | |
120 } \ | |
121 } | |
122 #endif | |
123 | |
124 #undef DEBUGGER_SINGLE_STEP_NOTIFY | |
125 #ifdef VM_JVMTI | |
126 /* NOTE: (kbr) This macro must be called AFTER the PC has been | |
127 incremented. JvmtiExport::at_single_stepping_point() may cause a | |
128 breakpoint opcode to get inserted at the current PC to allow the | |
129 debugger to coalesce single-step events. | |
130 | |
131 As a result if we call at_single_stepping_point() we refetch opcode | |
132 to get the current opcode. This will override any other prefetching | |
133 that might have occurred. | |
134 */ | |
135 #define DEBUGGER_SINGLE_STEP_NOTIFY() \ | |
136 { \ | |
137 if (_jvmti_interp_events) { \ | |
138 if (JvmtiExport::should_post_single_step()) { \ | |
139 DECACHE_STATE(); \ | |
140 SET_LAST_JAVA_FRAME(); \ | |
141 ThreadInVMfromJava trans(THREAD); \ | |
142 JvmtiExport::at_single_stepping_point(THREAD, \ | |
143 istate->method(), \ | |
144 pc); \ | |
145 RESET_LAST_JAVA_FRAME(); \ | |
146 CACHE_STATE(); \ | |
147 if (THREAD->pop_frame_pending() && \ | |
148 !THREAD->pop_frame_in_process()) { \ | |
149 goto handle_Pop_Frame; \ | |
150 } \ | |
151 opcode = *pc; \ | |
152 } \ | |
153 } \ | |
154 } | |
155 #else | |
156 #define DEBUGGER_SINGLE_STEP_NOTIFY() | |
157 #endif | |
158 | |
159 /* | |
160 * CONTINUE - Macro for executing the next opcode. | |
161 */ | |
162 #undef CONTINUE | |
163 #ifdef USELABELS | |
164 // Have to do this dispatch this way in C++ because otherwise gcc complains about crossing an | |
165 // initialization (which is is the initialization of the table pointer...) | |
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166 #define DISPATCH(opcode) goto *(void*)dispatch_table[opcode] |
0 | 167 #define CONTINUE { \ |
168 opcode = *pc; \ | |
169 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
170 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
171 DISPATCH(opcode); \ | |
172 } | |
173 #else | |
174 #ifdef PREFETCH_OPCCODE | |
175 #define CONTINUE { \ | |
176 opcode = *pc; \ | |
177 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
178 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
179 continue; \ | |
180 } | |
181 #else | |
182 #define CONTINUE { \ | |
183 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
184 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
185 continue; \ | |
186 } | |
187 #endif | |
188 #endif | |
189 | |
190 // JavaStack Implementation | |
191 #define MORE_STACK(count) \ | |
192 (topOfStack -= ((count) * Interpreter::stackElementWords())) | |
193 | |
194 | |
195 #define UPDATE_PC(opsize) {pc += opsize; } | |
196 /* | |
197 * UPDATE_PC_AND_TOS - Macro for updating the pc and topOfStack. | |
198 */ | |
199 #undef UPDATE_PC_AND_TOS | |
200 #define UPDATE_PC_AND_TOS(opsize, stack) \ | |
201 {pc += opsize; MORE_STACK(stack); } | |
202 | |
203 /* | |
204 * UPDATE_PC_AND_TOS_AND_CONTINUE - Macro for updating the pc and topOfStack, | |
205 * and executing the next opcode. It's somewhat similar to the combination | |
206 * of UPDATE_PC_AND_TOS and CONTINUE, but with some minor optimizations. | |
207 */ | |
208 #undef UPDATE_PC_AND_TOS_AND_CONTINUE | |
209 #ifdef USELABELS | |
210 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
211 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
212 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
213 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
214 DISPATCH(opcode); \ | |
215 } | |
216 | |
217 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
218 pc += opsize; opcode = *pc; \ | |
219 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
220 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
221 DISPATCH(opcode); \ | |
222 } | |
223 #else | |
224 #ifdef PREFETCH_OPCCODE | |
225 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
226 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
227 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
228 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
229 goto do_continue; \ | |
230 } | |
231 | |
232 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
233 pc += opsize; opcode = *pc; \ | |
234 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
235 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
236 goto do_continue; \ | |
237 } | |
238 #else | |
239 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
240 pc += opsize; MORE_STACK(stack); \ | |
241 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
242 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
243 goto do_continue; \ | |
244 } | |
245 | |
246 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
247 pc += opsize; \ | |
248 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
249 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
250 goto do_continue; \ | |
251 } | |
252 #endif /* PREFETCH_OPCCODE */ | |
253 #endif /* USELABELS */ | |
254 | |
255 // About to call a new method, update the save the adjusted pc and return to frame manager | |
256 #define UPDATE_PC_AND_RETURN(opsize) \ | |
257 DECACHE_TOS(); \ | |
258 istate->set_bcp(pc+opsize); \ | |
259 return; | |
260 | |
261 | |
262 #define METHOD istate->method() | |
263 #define INVOCATION_COUNT METHOD->invocation_counter() | |
264 #define BACKEDGE_COUNT METHOD->backedge_counter() | |
265 | |
266 | |
267 #define INCR_INVOCATION_COUNT INVOCATION_COUNT->increment() | |
268 #define OSR_REQUEST(res, branch_pc) \ | |
269 CALL_VM(res=InterpreterRuntime::frequency_counter_overflow(THREAD, branch_pc), handle_exception); | |
270 /* | |
271 * For those opcodes that need to have a GC point on a backwards branch | |
272 */ | |
273 | |
274 // Backedge counting is kind of strange. The asm interpreter will increment | |
275 // the backedge counter as a separate counter but it does it's comparisons | |
276 // to the sum (scaled) of invocation counter and backedge count to make | |
277 // a decision. Seems kind of odd to sum them together like that | |
278 | |
279 // skip is delta from current bcp/bci for target, branch_pc is pre-branch bcp | |
280 | |
281 | |
282 #define DO_BACKEDGE_CHECKS(skip, branch_pc) \ | |
283 if ((skip) <= 0) { \ | |
284 if (UseCompiler && UseLoopCounter) { \ | |
285 bool do_OSR = UseOnStackReplacement; \ | |
286 BACKEDGE_COUNT->increment(); \ | |
287 if (do_OSR) do_OSR = BACKEDGE_COUNT->reached_InvocationLimit(); \ | |
288 if (do_OSR) { \ | |
289 nmethod* osr_nmethod; \ | |
290 OSR_REQUEST(osr_nmethod, branch_pc); \ | |
291 if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \ | |
292 intptr_t* buf; \ | |
293 CALL_VM(buf=SharedRuntime::OSR_migration_begin(THREAD), handle_exception); \ | |
294 istate->set_msg(do_osr); \ | |
295 istate->set_osr_buf((address)buf); \ | |
296 istate->set_osr_entry(osr_nmethod->osr_entry()); \ | |
297 return; \ | |
298 } \ | |
299 } else { \ | |
300 INCR_INVOCATION_COUNT; \ | |
301 SAFEPOINT; \ | |
302 } \ | |
303 } /* UseCompiler ... */ \ | |
304 INCR_INVOCATION_COUNT; \ | |
305 SAFEPOINT; \ | |
306 } | |
307 | |
308 /* | |
309 * For those opcodes that need to have a GC point on a backwards branch | |
310 */ | |
311 | |
312 /* | |
313 * Macros for caching and flushing the interpreter state. Some local | |
314 * variables need to be flushed out to the frame before we do certain | |
315 * things (like pushing frames or becomming gc safe) and some need to | |
316 * be recached later (like after popping a frame). We could use one | |
317 * macro to cache or decache everything, but this would be less then | |
318 * optimal because we don't always need to cache or decache everything | |
319 * because some things we know are already cached or decached. | |
320 */ | |
321 #undef DECACHE_TOS | |
322 #undef CACHE_TOS | |
323 #undef CACHE_PREV_TOS | |
324 #define DECACHE_TOS() istate->set_stack(topOfStack); | |
325 | |
326 #define CACHE_TOS() topOfStack = (intptr_t *)istate->stack(); | |
327 | |
328 #undef DECACHE_PC | |
329 #undef CACHE_PC | |
330 #define DECACHE_PC() istate->set_bcp(pc); | |
331 #define CACHE_PC() pc = istate->bcp(); | |
332 #define CACHE_CP() cp = istate->constants(); | |
333 #define CACHE_LOCALS() locals = istate->locals(); | |
334 #undef CACHE_FRAME | |
335 #define CACHE_FRAME() | |
336 | |
337 /* | |
338 * CHECK_NULL - Macro for throwing a NullPointerException if the object | |
339 * passed is a null ref. | |
340 * On some architectures/platforms it should be possible to do this implicitly | |
341 */ | |
342 #undef CHECK_NULL | |
343 #define CHECK_NULL(obj_) \ | |
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344 if ((obj_) == NULL) { \ |
0 | 345 VM_JAVA_ERROR(vmSymbols::java_lang_NullPointerException(), ""); \ |
346 } | |
347 | |
348 #define VMdoubleConstZero() 0.0 | |
349 #define VMdoubleConstOne() 1.0 | |
350 #define VMlongConstZero() (max_jlong-max_jlong) | |
351 #define VMlongConstOne() ((max_jlong-max_jlong)+1) | |
352 | |
353 /* | |
354 * Alignment | |
355 */ | |
356 #define VMalignWordUp(val) (((uintptr_t)(val) + 3) & ~3) | |
357 | |
358 // Decache the interpreter state that interpreter modifies directly (i.e. GC is indirect mod) | |
359 #define DECACHE_STATE() DECACHE_PC(); DECACHE_TOS(); | |
360 | |
361 // Reload interpreter state after calling the VM or a possible GC | |
362 #define CACHE_STATE() \ | |
363 CACHE_TOS(); \ | |
364 CACHE_PC(); \ | |
365 CACHE_CP(); \ | |
366 CACHE_LOCALS(); | |
367 | |
368 // Call the VM don't check for pending exceptions | |
369 #define CALL_VM_NOCHECK(func) \ | |
370 DECACHE_STATE(); \ | |
371 SET_LAST_JAVA_FRAME(); \ | |
372 func; \ | |
373 RESET_LAST_JAVA_FRAME(); \ | |
374 CACHE_STATE(); \ | |
375 if (THREAD->pop_frame_pending() && \ | |
376 !THREAD->pop_frame_in_process()) { \ | |
377 goto handle_Pop_Frame; \ | |
378 } | |
379 | |
380 // Call the VM and check for pending exceptions | |
381 #define CALL_VM(func, label) { \ | |
382 CALL_VM_NOCHECK(func); \ | |
383 if (THREAD->has_pending_exception()) goto label; \ | |
384 } | |
385 | |
386 /* | |
387 * BytecodeInterpreter::run(interpreterState istate) | |
388 * BytecodeInterpreter::runWithChecks(interpreterState istate) | |
389 * | |
390 * The real deal. This is where byte codes actually get interpreted. | |
391 * Basically it's a big while loop that iterates until we return from | |
392 * the method passed in. | |
393 * | |
394 * The runWithChecks is used if JVMTI is enabled. | |
395 * | |
396 */ | |
397 #if defined(VM_JVMTI) | |
398 void | |
399 BytecodeInterpreter::runWithChecks(interpreterState istate) { | |
400 #else | |
401 void | |
402 BytecodeInterpreter::run(interpreterState istate) { | |
403 #endif | |
404 | |
405 // In order to simplify some tests based on switches set at runtime | |
406 // we invoke the interpreter a single time after switches are enabled | |
407 // and set simpler to to test variables rather than method calls or complex | |
408 // boolean expressions. | |
409 | |
410 static int initialized = 0; | |
411 static int checkit = 0; | |
412 static intptr_t* c_addr = NULL; | |
413 static intptr_t c_value; | |
414 | |
415 if (checkit && *c_addr != c_value) { | |
416 os::breakpoint(); | |
417 } | |
418 #ifdef VM_JVMTI | |
419 static bool _jvmti_interp_events = 0; | |
420 #endif | |
421 | |
422 static int _compiling; // (UseCompiler || CountCompiledCalls) | |
423 | |
424 #ifdef ASSERT | |
425 if (istate->_msg != initialize) { | |
426 assert(abs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit"); | |
427 IA32_ONLY(assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1, "wrong")); | |
428 } | |
429 // Verify linkages. | |
430 interpreterState l = istate; | |
431 do { | |
432 assert(l == l->_self_link, "bad link"); | |
433 l = l->_prev_link; | |
434 } while (l != NULL); | |
435 // Screwups with stack management usually cause us to overwrite istate | |
436 // save a copy so we can verify it. | |
437 interpreterState orig = istate; | |
438 #endif | |
439 | |
440 static volatile jbyte* _byte_map_base; // adjusted card table base for oop store barrier | |
441 | |
442 register intptr_t* topOfStack = (intptr_t *)istate->stack(); /* access with STACK macros */ | |
443 register address pc = istate->bcp(); | |
444 register jubyte opcode; | |
445 register intptr_t* locals = istate->locals(); | |
446 register constantPoolCacheOop cp = istate->constants(); // method()->constants()->cache() | |
447 #ifdef LOTS_OF_REGS | |
448 register JavaThread* THREAD = istate->thread(); | |
449 register volatile jbyte* BYTE_MAP_BASE = _byte_map_base; | |
450 #else | |
451 #undef THREAD | |
452 #define THREAD istate->thread() | |
453 #undef BYTE_MAP_BASE | |
454 #define BYTE_MAP_BASE _byte_map_base | |
455 #endif | |
456 | |
457 #ifdef USELABELS | |
458 const static void* const opclabels_data[256] = { | |
459 /* 0x00 */ &&opc_nop, &&opc_aconst_null,&&opc_iconst_m1,&&opc_iconst_0, | |
460 /* 0x04 */ &&opc_iconst_1,&&opc_iconst_2, &&opc_iconst_3, &&opc_iconst_4, | |
461 /* 0x08 */ &&opc_iconst_5,&&opc_lconst_0, &&opc_lconst_1, &&opc_fconst_0, | |
462 /* 0x0C */ &&opc_fconst_1,&&opc_fconst_2, &&opc_dconst_0, &&opc_dconst_1, | |
463 | |
464 /* 0x10 */ &&opc_bipush, &&opc_sipush, &&opc_ldc, &&opc_ldc_w, | |
465 /* 0x14 */ &&opc_ldc2_w, &&opc_iload, &&opc_lload, &&opc_fload, | |
466 /* 0x18 */ &&opc_dload, &&opc_aload, &&opc_iload_0,&&opc_iload_1, | |
467 /* 0x1C */ &&opc_iload_2,&&opc_iload_3,&&opc_lload_0,&&opc_lload_1, | |
468 | |
469 /* 0x20 */ &&opc_lload_2,&&opc_lload_3,&&opc_fload_0,&&opc_fload_1, | |
470 /* 0x24 */ &&opc_fload_2,&&opc_fload_3,&&opc_dload_0,&&opc_dload_1, | |
471 /* 0x28 */ &&opc_dload_2,&&opc_dload_3,&&opc_aload_0,&&opc_aload_1, | |
472 /* 0x2C */ &&opc_aload_2,&&opc_aload_3,&&opc_iaload, &&opc_laload, | |
473 | |
474 /* 0x30 */ &&opc_faload, &&opc_daload, &&opc_aaload, &&opc_baload, | |
475 /* 0x34 */ &&opc_caload, &&opc_saload, &&opc_istore, &&opc_lstore, | |
476 /* 0x38 */ &&opc_fstore, &&opc_dstore, &&opc_astore, &&opc_istore_0, | |
477 /* 0x3C */ &&opc_istore_1,&&opc_istore_2,&&opc_istore_3,&&opc_lstore_0, | |
478 | |
479 /* 0x40 */ &&opc_lstore_1,&&opc_lstore_2,&&opc_lstore_3,&&opc_fstore_0, | |
480 /* 0x44 */ &&opc_fstore_1,&&opc_fstore_2,&&opc_fstore_3,&&opc_dstore_0, | |
481 /* 0x48 */ &&opc_dstore_1,&&opc_dstore_2,&&opc_dstore_3,&&opc_astore_0, | |
482 /* 0x4C */ &&opc_astore_1,&&opc_astore_2,&&opc_astore_3,&&opc_iastore, | |
483 | |
484 /* 0x50 */ &&opc_lastore,&&opc_fastore,&&opc_dastore,&&opc_aastore, | |
485 /* 0x54 */ &&opc_bastore,&&opc_castore,&&opc_sastore,&&opc_pop, | |
486 /* 0x58 */ &&opc_pop2, &&opc_dup, &&opc_dup_x1, &&opc_dup_x2, | |
487 /* 0x5C */ &&opc_dup2, &&opc_dup2_x1,&&opc_dup2_x2,&&opc_swap, | |
488 | |
489 /* 0x60 */ &&opc_iadd,&&opc_ladd,&&opc_fadd,&&opc_dadd, | |
490 /* 0x64 */ &&opc_isub,&&opc_lsub,&&opc_fsub,&&opc_dsub, | |
491 /* 0x68 */ &&opc_imul,&&opc_lmul,&&opc_fmul,&&opc_dmul, | |
492 /* 0x6C */ &&opc_idiv,&&opc_ldiv,&&opc_fdiv,&&opc_ddiv, | |
493 | |
494 /* 0x70 */ &&opc_irem, &&opc_lrem, &&opc_frem,&&opc_drem, | |
495 /* 0x74 */ &&opc_ineg, &&opc_lneg, &&opc_fneg,&&opc_dneg, | |
496 /* 0x78 */ &&opc_ishl, &&opc_lshl, &&opc_ishr,&&opc_lshr, | |
497 /* 0x7C */ &&opc_iushr,&&opc_lushr,&&opc_iand,&&opc_land, | |
498 | |
499 /* 0x80 */ &&opc_ior, &&opc_lor,&&opc_ixor,&&opc_lxor, | |
500 /* 0x84 */ &&opc_iinc,&&opc_i2l,&&opc_i2f, &&opc_i2d, | |
501 /* 0x88 */ &&opc_l2i, &&opc_l2f,&&opc_l2d, &&opc_f2i, | |
502 /* 0x8C */ &&opc_f2l, &&opc_f2d,&&opc_d2i, &&opc_d2l, | |
503 | |
504 /* 0x90 */ &&opc_d2f, &&opc_i2b, &&opc_i2c, &&opc_i2s, | |
505 /* 0x94 */ &&opc_lcmp, &&opc_fcmpl,&&opc_fcmpg,&&opc_dcmpl, | |
506 /* 0x98 */ &&opc_dcmpg,&&opc_ifeq, &&opc_ifne, &&opc_iflt, | |
507 /* 0x9C */ &&opc_ifge, &&opc_ifgt, &&opc_ifle, &&opc_if_icmpeq, | |
508 | |
509 /* 0xA0 */ &&opc_if_icmpne,&&opc_if_icmplt,&&opc_if_icmpge, &&opc_if_icmpgt, | |
510 /* 0xA4 */ &&opc_if_icmple,&&opc_if_acmpeq,&&opc_if_acmpne, &&opc_goto, | |
511 /* 0xA8 */ &&opc_jsr, &&opc_ret, &&opc_tableswitch,&&opc_lookupswitch, | |
512 /* 0xAC */ &&opc_ireturn, &&opc_lreturn, &&opc_freturn, &&opc_dreturn, | |
513 | |
514 /* 0xB0 */ &&opc_areturn, &&opc_return, &&opc_getstatic, &&opc_putstatic, | |
515 /* 0xB4 */ &&opc_getfield, &&opc_putfield, &&opc_invokevirtual,&&opc_invokespecial, | |
516 /* 0xB8 */ &&opc_invokestatic,&&opc_invokeinterface,NULL, &&opc_new, | |
517 /* 0xBC */ &&opc_newarray, &&opc_anewarray, &&opc_arraylength, &&opc_athrow, | |
518 | |
519 /* 0xC0 */ &&opc_checkcast, &&opc_instanceof, &&opc_monitorenter, &&opc_monitorexit, | |
520 /* 0xC4 */ &&opc_wide, &&opc_multianewarray, &&opc_ifnull, &&opc_ifnonnull, | |
123 | 521 /* 0xC8 */ &&opc_goto_w, &&opc_jsr_w, &&opc_breakpoint, &&opc_default, |
522 /* 0xCC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
523 | |
524 /* 0xD0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
0 | 525 /* 0xD4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
526 /* 0xD8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
527 /* 0xDC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
528 | |
529 /* 0xE0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
123 | 530 /* 0xE4 */ &&opc_default, &&opc_return_register_finalizer, &&opc_default, &&opc_default, |
0 | 531 /* 0xE8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
532 /* 0xEC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
533 | |
534 /* 0xF0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
535 /* 0xF4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
536 /* 0xF8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
537 /* 0xFC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default | |
538 }; | |
539 register uintptr_t *dispatch_table = (uintptr_t*)&opclabels_data[0]; | |
540 #endif /* USELABELS */ | |
541 | |
542 #ifdef ASSERT | |
543 // this will trigger a VERIFY_OOP on entry | |
544 if (istate->msg() != initialize && ! METHOD->is_static()) { | |
545 oop rcvr = LOCALS_OBJECT(0); | |
546 } | |
547 #endif | |
548 // #define HACK | |
549 #ifdef HACK | |
550 bool interesting = false; | |
551 #endif // HACK | |
552 | |
553 /* QQQ this should be a stack method so we don't know actual direction */ | |
554 assert(istate->msg() == initialize || | |
555 topOfStack >= istate->stack_limit() && | |
556 topOfStack < istate->stack_base(), | |
557 "Stack top out of range"); | |
558 | |
559 switch (istate->msg()) { | |
560 case initialize: { | |
561 if (initialized++) ShouldNotReachHere(); // Only one initialize call | |
562 _compiling = (UseCompiler || CountCompiledCalls); | |
563 #ifdef VM_JVMTI | |
564 _jvmti_interp_events = JvmtiExport::can_post_interpreter_events(); | |
565 #endif | |
566 BarrierSet* bs = Universe::heap()->barrier_set(); | |
567 assert(bs->kind() == BarrierSet::CardTableModRef, "Wrong barrier set kind"); | |
568 _byte_map_base = (volatile jbyte*)(((CardTableModRefBS*)bs)->byte_map_base); | |
569 return; | |
570 } | |
571 break; | |
572 case method_entry: { | |
573 THREAD->set_do_not_unlock(); | |
574 // count invocations | |
575 assert(initialized, "Interpreter not initialized"); | |
576 if (_compiling) { | |
577 if (ProfileInterpreter) { | |
578 METHOD->increment_interpreter_invocation_count(); | |
579 } | |
580 INCR_INVOCATION_COUNT; | |
581 if (INVOCATION_COUNT->reached_InvocationLimit()) { | |
582 CALL_VM((void)InterpreterRuntime::frequency_counter_overflow(THREAD, NULL), handle_exception); | |
583 | |
584 // We no longer retry on a counter overflow | |
585 | |
586 // istate->set_msg(retry_method); | |
587 // THREAD->clr_do_not_unlock(); | |
588 // return; | |
589 } | |
590 SAFEPOINT; | |
591 } | |
592 | |
593 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
594 // initialize | |
595 os::breakpoint(); | |
596 } | |
597 | |
598 #ifdef HACK | |
599 { | |
600 ResourceMark rm; | |
601 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
602 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
603 tty->print_cr("entering: depth %d bci: %d", | |
604 (istate->_stack_base - istate->_stack), | |
605 istate->_bcp - istate->_method->code_base()); | |
606 interesting = true; | |
607 } | |
608 } | |
609 #endif // HACK | |
610 | |
611 | |
612 // lock method if synchronized | |
613 if (METHOD->is_synchronized()) { | |
614 // oop rcvr = locals[0].j.r; | |
615 oop rcvr; | |
616 if (METHOD->is_static()) { | |
617 rcvr = METHOD->constants()->pool_holder()->klass_part()->java_mirror(); | |
618 } else { | |
619 rcvr = LOCALS_OBJECT(0); | |
620 } | |
621 // The initial monitor is ours for the taking | |
622 BasicObjectLock* mon = &istate->monitor_base()[-1]; | |
623 oop monobj = mon->obj(); | |
624 assert(mon->obj() == rcvr, "method monitor mis-initialized"); | |
625 | |
626 bool success = UseBiasedLocking; | |
627 if (UseBiasedLocking) { | |
628 markOop mark = rcvr->mark(); | |
629 if (mark->has_bias_pattern()) { | |
630 // The bias pattern is present in the object's header. Need to check | |
631 // whether the bias owner and the epoch are both still current. | |
632 intptr_t xx = ((intptr_t) THREAD) ^ (intptr_t) mark; | |
633 xx = (intptr_t) rcvr->klass()->klass_part()->prototype_header() ^ xx; | |
634 intptr_t yy = (xx & ~((int) markOopDesc::age_mask_in_place)); | |
635 if (yy != 0 ) { | |
636 // At this point we know that the header has the bias pattern and | |
637 // that we are not the bias owner in the current epoch. We need to | |
638 // figure out more details about the state of the header in order to | |
639 // know what operations can be legally performed on the object's | |
640 // header. | |
641 | |
642 // If the low three bits in the xor result aren't clear, that means | |
643 // the prototype header is no longer biased and we have to revoke | |
644 // the bias on this object. | |
645 | |
646 if (yy & markOopDesc::biased_lock_mask_in_place == 0 ) { | |
647 // Biasing is still enabled for this data type. See whether the | |
648 // epoch of the current bias is still valid, meaning that the epoch | |
649 // bits of the mark word are equal to the epoch bits of the | |
650 // prototype header. (Note that the prototype header's epoch bits | |
651 // only change at a safepoint.) If not, attempt to rebias the object | |
652 // toward the current thread. Note that we must be absolutely sure | |
653 // that the current epoch is invalid in order to do this because | |
654 // otherwise the manipulations it performs on the mark word are | |
655 // illegal. | |
656 if (yy & markOopDesc::epoch_mask_in_place == 0) { | |
657 // The epoch of the current bias is still valid but we know nothing | |
658 // about the owner; it might be set or it might be clear. Try to | |
659 // acquire the bias of the object using an atomic operation. If this | |
660 // fails we will go in to the runtime to revoke the object's bias. | |
661 // Note that we first construct the presumed unbiased header so we | |
662 // don't accidentally blow away another thread's valid bias. | |
663 intptr_t unbiased = (intptr_t) mark & (markOopDesc::biased_lock_mask_in_place | | |
664 markOopDesc::age_mask_in_place | | |
665 markOopDesc::epoch_mask_in_place); | |
666 if (Atomic::cmpxchg_ptr((intptr_t)THREAD | unbiased, (intptr_t*) rcvr->mark_addr(), unbiased) != unbiased) { | |
667 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); | |
668 } | |
669 } else { | |
670 try_rebias: | |
671 // At this point we know the epoch has expired, meaning that the | |
672 // current "bias owner", if any, is actually invalid. Under these | |
673 // circumstances _only_, we are allowed to use the current header's | |
674 // value as the comparison value when doing the cas to acquire the | |
675 // bias in the current epoch. In other words, we allow transfer of | |
676 // the bias from one thread to another directly in this situation. | |
677 xx = (intptr_t) rcvr->klass()->klass_part()->prototype_header() | (intptr_t) THREAD; | |
678 if (Atomic::cmpxchg_ptr((intptr_t)THREAD | (intptr_t) rcvr->klass()->klass_part()->prototype_header(), | |
679 (intptr_t*) rcvr->mark_addr(), | |
680 (intptr_t) mark) != (intptr_t) mark) { | |
681 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); | |
682 } | |
683 } | |
684 } else { | |
685 try_revoke_bias: | |
686 // The prototype mark in the klass doesn't have the bias bit set any | |
687 // more, indicating that objects of this data type are not supposed | |
688 // to be biased any more. We are going to try to reset the mark of | |
689 // this object to the prototype value and fall through to the | |
690 // CAS-based locking scheme. Note that if our CAS fails, it means | |
691 // that another thread raced us for the privilege of revoking the | |
692 // bias of this particular object, so it's okay to continue in the | |
693 // normal locking code. | |
694 // | |
695 xx = (intptr_t) rcvr->klass()->klass_part()->prototype_header() | (intptr_t) THREAD; | |
696 if (Atomic::cmpxchg_ptr(rcvr->klass()->klass_part()->prototype_header(), | |
697 (intptr_t*) rcvr->mark_addr(), | |
698 mark) == mark) { | |
699 // (*counters->revoked_lock_entry_count_addr())++; | |
700 success = false; | |
701 } | |
702 } | |
703 } | |
704 } else { | |
705 cas_label: | |
706 success = false; | |
707 } | |
708 } | |
709 if (!success) { | |
710 markOop displaced = rcvr->mark()->set_unlocked(); | |
711 mon->lock()->set_displaced_header(displaced); | |
712 if (Atomic::cmpxchg_ptr(mon, rcvr->mark_addr(), displaced) != displaced) { | |
713 // Is it simple recursive case? | |
714 if (THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { | |
715 mon->lock()->set_displaced_header(NULL); | |
716 } else { | |
717 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); | |
718 } | |
719 } | |
720 } | |
721 } | |
722 THREAD->clr_do_not_unlock(); | |
723 | |
724 // Notify jvmti | |
725 #ifdef VM_JVMTI | |
726 if (_jvmti_interp_events) { | |
727 // Whenever JVMTI puts a thread in interp_only_mode, method | |
728 // entry/exit events are sent for that thread to track stack depth. | |
729 if (THREAD->is_interp_only_mode()) { | |
730 CALL_VM(InterpreterRuntime::post_method_entry(THREAD), | |
731 handle_exception); | |
732 } | |
733 } | |
734 #endif /* VM_JVMTI */ | |
735 | |
736 goto run; | |
737 } | |
738 | |
739 case popping_frame: { | |
740 // returned from a java call to pop the frame, restart the call | |
741 // clear the message so we don't confuse ourselves later | |
742 assert(THREAD->pop_frame_in_process(), "wrong frame pop state"); | |
743 istate->set_msg(no_request); | |
744 THREAD->clr_pop_frame_in_process(); | |
745 goto run; | |
746 } | |
747 | |
748 case method_resume: { | |
749 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
750 // resume | |
751 os::breakpoint(); | |
752 } | |
753 #ifdef HACK | |
754 { | |
755 ResourceMark rm; | |
756 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
757 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
758 tty->print_cr("resume: depth %d bci: %d", | |
759 (istate->_stack_base - istate->_stack) , | |
760 istate->_bcp - istate->_method->code_base()); | |
761 interesting = true; | |
762 } | |
763 } | |
764 #endif // HACK | |
765 // returned from a java call, continue executing. | |
766 if (THREAD->pop_frame_pending() && !THREAD->pop_frame_in_process()) { | |
767 goto handle_Pop_Frame; | |
768 } | |
769 | |
770 if (THREAD->has_pending_exception()) goto handle_exception; | |
771 // Update the pc by the saved amount of the invoke bytecode size | |
772 UPDATE_PC(istate->bcp_advance()); | |
773 goto run; | |
774 } | |
775 | |
776 case deopt_resume2: { | |
777 // Returned from an opcode that will reexecute. Deopt was | |
778 // a result of a PopFrame request. | |
779 // | |
780 goto run; | |
781 } | |
782 | |
783 case deopt_resume: { | |
784 // Returned from an opcode that has completed. The stack has | |
785 // the result all we need to do is skip across the bytecode | |
786 // and continue (assuming there is no exception pending) | |
787 // | |
788 // compute continuation length | |
789 // | |
790 // Note: it is possible to deopt at a return_register_finalizer opcode | |
791 // because this requires entering the vm to do the registering. While the | |
792 // opcode is complete we can't advance because there are no more opcodes | |
793 // much like trying to deopt at a poll return. In that has we simply | |
794 // get out of here | |
795 // | |
796 if ( Bytecodes::code_at(pc, METHOD) == Bytecodes::_return_register_finalizer) { | |
797 // this will do the right thing even if an exception is pending. | |
798 goto handle_return; | |
799 } | |
800 UPDATE_PC(Bytecodes::length_at(pc)); | |
801 if (THREAD->has_pending_exception()) goto handle_exception; | |
802 goto run; | |
803 } | |
804 case got_monitors: { | |
805 // continue locking now that we have a monitor to use | |
806 // we expect to find newly allocated monitor at the "top" of the monitor stack. | |
807 oop lockee = STACK_OBJECT(-1); | |
808 // derefing's lockee ought to provoke implicit null check | |
809 // find a free monitor | |
810 BasicObjectLock* entry = (BasicObjectLock*) istate->stack_base(); | |
811 assert(entry->obj() == NULL, "Frame manager didn't allocate the monitor"); | |
812 entry->set_obj(lockee); | |
813 | |
814 markOop displaced = lockee->mark()->set_unlocked(); | |
815 entry->lock()->set_displaced_header(displaced); | |
816 if (Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { | |
817 // Is it simple recursive case? | |
818 if (THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { | |
819 entry->lock()->set_displaced_header(NULL); | |
820 } else { | |
821 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); | |
822 } | |
823 } | |
824 UPDATE_PC_AND_TOS(1, -1); | |
825 goto run; | |
826 } | |
827 default: { | |
828 fatal("Unexpected message from frame manager"); | |
829 } | |
830 } | |
831 | |
832 run: | |
833 | |
834 DO_UPDATE_INSTRUCTION_COUNT(*pc) | |
835 DEBUGGER_SINGLE_STEP_NOTIFY(); | |
836 #ifdef PREFETCH_OPCCODE | |
837 opcode = *pc; /* prefetch first opcode */ | |
838 #endif | |
839 | |
840 #ifndef USELABELS | |
841 while (1) | |
842 #endif | |
843 { | |
844 #ifndef PREFETCH_OPCCODE | |
845 opcode = *pc; | |
846 #endif | |
847 // Seems like this happens twice per opcode. At worst this is only | |
848 // need at entry to the loop. | |
849 // DEBUGGER_SINGLE_STEP_NOTIFY(); | |
850 /* Using this labels avoids double breakpoints when quickening and | |
851 * when returing from transition frames. | |
852 */ | |
853 opcode_switch: | |
854 assert(istate == orig, "Corrupted istate"); | |
855 /* QQQ Hmm this has knowledge of direction, ought to be a stack method */ | |
856 assert(topOfStack >= istate->stack_limit(), "Stack overrun"); | |
857 assert(topOfStack < istate->stack_base(), "Stack underrun"); | |
858 | |
859 #ifdef USELABELS | |
860 DISPATCH(opcode); | |
861 #else | |
862 switch (opcode) | |
863 #endif | |
864 { | |
865 CASE(_nop): | |
866 UPDATE_PC_AND_CONTINUE(1); | |
867 | |
868 /* Push miscellaneous constants onto the stack. */ | |
869 | |
870 CASE(_aconst_null): | |
871 SET_STACK_OBJECT(NULL, 0); | |
872 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
873 | |
874 #undef OPC_CONST_n | |
875 #define OPC_CONST_n(opcode, const_type, value) \ | |
876 CASE(opcode): \ | |
877 SET_STACK_ ## const_type(value, 0); \ | |
878 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
879 | |
880 OPC_CONST_n(_iconst_m1, INT, -1); | |
881 OPC_CONST_n(_iconst_0, INT, 0); | |
882 OPC_CONST_n(_iconst_1, INT, 1); | |
883 OPC_CONST_n(_iconst_2, INT, 2); | |
884 OPC_CONST_n(_iconst_3, INT, 3); | |
885 OPC_CONST_n(_iconst_4, INT, 4); | |
886 OPC_CONST_n(_iconst_5, INT, 5); | |
887 OPC_CONST_n(_fconst_0, FLOAT, 0.0); | |
888 OPC_CONST_n(_fconst_1, FLOAT, 1.0); | |
889 OPC_CONST_n(_fconst_2, FLOAT, 2.0); | |
890 | |
891 #undef OPC_CONST2_n | |
892 #define OPC_CONST2_n(opcname, value, key, kind) \ | |
893 CASE(_##opcname): \ | |
894 { \ | |
895 SET_STACK_ ## kind(VM##key##Const##value(), 1); \ | |
896 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
897 } | |
898 OPC_CONST2_n(dconst_0, Zero, double, DOUBLE); | |
899 OPC_CONST2_n(dconst_1, One, double, DOUBLE); | |
900 OPC_CONST2_n(lconst_0, Zero, long, LONG); | |
901 OPC_CONST2_n(lconst_1, One, long, LONG); | |
902 | |
903 /* Load constant from constant pool: */ | |
904 | |
905 /* Push a 1-byte signed integer value onto the stack. */ | |
906 CASE(_bipush): | |
907 SET_STACK_INT((jbyte)(pc[1]), 0); | |
908 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
909 | |
910 /* Push a 2-byte signed integer constant onto the stack. */ | |
911 CASE(_sipush): | |
912 SET_STACK_INT((int16_t)Bytes::get_Java_u2(pc + 1), 0); | |
913 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
914 | |
915 /* load from local variable */ | |
916 | |
917 CASE(_aload): | |
918 SET_STACK_OBJECT(LOCALS_OBJECT(pc[1]), 0); | |
919 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
920 | |
921 CASE(_iload): | |
922 CASE(_fload): | |
923 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0); | |
924 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
925 | |
926 CASE(_lload): | |
927 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(pc[1]), 1); | |
928 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
929 | |
930 CASE(_dload): | |
931 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(pc[1]), 1); | |
932 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
933 | |
934 #undef OPC_LOAD_n | |
935 #define OPC_LOAD_n(num) \ | |
936 CASE(_aload_##num): \ | |
937 SET_STACK_OBJECT(LOCALS_OBJECT(num), 0); \ | |
938 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
939 \ | |
940 CASE(_iload_##num): \ | |
941 CASE(_fload_##num): \ | |
942 SET_STACK_SLOT(LOCALS_SLOT(num), 0); \ | |
943 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
944 \ | |
945 CASE(_lload_##num): \ | |
946 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(num), 1); \ | |
947 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
948 CASE(_dload_##num): \ | |
949 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(num), 1); \ | |
950 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
951 | |
952 OPC_LOAD_n(0); | |
953 OPC_LOAD_n(1); | |
954 OPC_LOAD_n(2); | |
955 OPC_LOAD_n(3); | |
956 | |
957 /* store to a local variable */ | |
958 | |
959 CASE(_astore): | |
960 astore(topOfStack, -1, locals, pc[1]); | |
961 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
962 | |
963 CASE(_istore): | |
964 CASE(_fstore): | |
965 SET_LOCALS_SLOT(STACK_SLOT(-1), pc[1]); | |
966 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
967 | |
968 CASE(_lstore): | |
969 SET_LOCALS_LONG(STACK_LONG(-1), pc[1]); | |
970 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
971 | |
972 CASE(_dstore): | |
973 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), pc[1]); | |
974 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
975 | |
976 CASE(_wide): { | |
977 uint16_t reg = Bytes::get_Java_u2(pc + 2); | |
978 | |
979 opcode = pc[1]; | |
980 switch(opcode) { | |
981 case Bytecodes::_aload: | |
982 SET_STACK_OBJECT(LOCALS_OBJECT(reg), 0); | |
983 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
984 | |
985 case Bytecodes::_iload: | |
986 case Bytecodes::_fload: | |
987 SET_STACK_SLOT(LOCALS_SLOT(reg), 0); | |
988 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
989 | |
990 case Bytecodes::_lload: | |
991 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
992 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
993 | |
994 case Bytecodes::_dload: | |
995 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
996 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
997 | |
998 case Bytecodes::_astore: | |
999 astore(topOfStack, -1, locals, reg); | |
1000 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
1001 | |
1002 case Bytecodes::_istore: | |
1003 case Bytecodes::_fstore: | |
1004 SET_LOCALS_SLOT(STACK_SLOT(-1), reg); | |
1005 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
1006 | |
1007 case Bytecodes::_lstore: | |
1008 SET_LOCALS_LONG(STACK_LONG(-1), reg); | |
1009 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
1010 | |
1011 case Bytecodes::_dstore: | |
1012 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), reg); | |
1013 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
1014 | |
1015 case Bytecodes::_iinc: { | |
1016 int16_t offset = (int16_t)Bytes::get_Java_u2(pc+4); | |
1017 // Be nice to see what this generates.... QQQ | |
1018 SET_LOCALS_INT(LOCALS_INT(reg) + offset, reg); | |
1019 UPDATE_PC_AND_CONTINUE(6); | |
1020 } | |
1021 case Bytecodes::_ret: | |
1022 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(reg)); | |
1023 UPDATE_PC_AND_CONTINUE(0); | |
1024 default: | |
1025 VM_JAVA_ERROR(vmSymbols::java_lang_InternalError(), "undefined opcode"); | |
1026 } | |
1027 } | |
1028 | |
1029 | |
1030 #undef OPC_STORE_n | |
1031 #define OPC_STORE_n(num) \ | |
1032 CASE(_astore_##num): \ | |
1033 astore(topOfStack, -1, locals, num); \ | |
1034 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1035 CASE(_istore_##num): \ | |
1036 CASE(_fstore_##num): \ | |
1037 SET_LOCALS_SLOT(STACK_SLOT(-1), num); \ | |
1038 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1039 | |
1040 OPC_STORE_n(0); | |
1041 OPC_STORE_n(1); | |
1042 OPC_STORE_n(2); | |
1043 OPC_STORE_n(3); | |
1044 | |
1045 #undef OPC_DSTORE_n | |
1046 #define OPC_DSTORE_n(num) \ | |
1047 CASE(_dstore_##num): \ | |
1048 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), num); \ | |
1049 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1050 CASE(_lstore_##num): \ | |
1051 SET_LOCALS_LONG(STACK_LONG(-1), num); \ | |
1052 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
1053 | |
1054 OPC_DSTORE_n(0); | |
1055 OPC_DSTORE_n(1); | |
1056 OPC_DSTORE_n(2); | |
1057 OPC_DSTORE_n(3); | |
1058 | |
1059 /* stack pop, dup, and insert opcodes */ | |
1060 | |
1061 | |
1062 CASE(_pop): /* Discard the top item on the stack */ | |
1063 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1064 | |
1065 | |
1066 CASE(_pop2): /* Discard the top 2 items on the stack */ | |
1067 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
1068 | |
1069 | |
1070 CASE(_dup): /* Duplicate the top item on the stack */ | |
1071 dup(topOfStack); | |
1072 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1073 | |
1074 CASE(_dup2): /* Duplicate the top 2 items on the stack */ | |
1075 dup2(topOfStack); | |
1076 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1077 | |
1078 CASE(_dup_x1): /* insert top word two down */ | |
1079 dup_x1(topOfStack); | |
1080 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1081 | |
1082 CASE(_dup_x2): /* insert top word three down */ | |
1083 dup_x2(topOfStack); | |
1084 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1085 | |
1086 CASE(_dup2_x1): /* insert top 2 slots three down */ | |
1087 dup2_x1(topOfStack); | |
1088 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1089 | |
1090 CASE(_dup2_x2): /* insert top 2 slots four down */ | |
1091 dup2_x2(topOfStack); | |
1092 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1093 | |
1094 CASE(_swap): { /* swap top two elements on the stack */ | |
1095 swap(topOfStack); | |
1096 UPDATE_PC_AND_CONTINUE(1); | |
1097 } | |
1098 | |
1099 /* Perform various binary integer operations */ | |
1100 | |
1101 #undef OPC_INT_BINARY | |
1102 #define OPC_INT_BINARY(opcname, opname, test) \ | |
1103 CASE(_i##opcname): \ | |
1104 if (test && (STACK_INT(-1) == 0)) { \ | |
1105 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
1106 "/ by int zero"); \ | |
1107 } \ | |
1108 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
1109 STACK_INT(-1)), \ | |
1110 -2); \ | |
1111 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1112 CASE(_l##opcname): \ | |
1113 { \ | |
1114 if (test) { \ | |
1115 jlong l1 = STACK_LONG(-1); \ | |
1116 if (VMlongEqz(l1)) { \ | |
1117 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
1118 "/ by long zero"); \ | |
1119 } \ | |
1120 } \ | |
1121 /* First long at (-1,-2) next long at (-3,-4) */ \ | |
1122 SET_STACK_LONG(VMlong##opname(STACK_LONG(-3), \ | |
1123 STACK_LONG(-1)), \ | |
1124 -3); \ | |
1125 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1126 } | |
1127 | |
1128 OPC_INT_BINARY(add, Add, 0); | |
1129 OPC_INT_BINARY(sub, Sub, 0); | |
1130 OPC_INT_BINARY(mul, Mul, 0); | |
1131 OPC_INT_BINARY(and, And, 0); | |
1132 OPC_INT_BINARY(or, Or, 0); | |
1133 OPC_INT_BINARY(xor, Xor, 0); | |
1134 OPC_INT_BINARY(div, Div, 1); | |
1135 OPC_INT_BINARY(rem, Rem, 1); | |
1136 | |
1137 | |
1138 /* Perform various binary floating number operations */ | |
1139 /* On some machine/platforms/compilers div zero check can be implicit */ | |
1140 | |
1141 #undef OPC_FLOAT_BINARY | |
1142 #define OPC_FLOAT_BINARY(opcname, opname) \ | |
1143 CASE(_d##opcname): { \ | |
1144 SET_STACK_DOUBLE(VMdouble##opname(STACK_DOUBLE(-3), \ | |
1145 STACK_DOUBLE(-1)), \ | |
1146 -3); \ | |
1147 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
1148 } \ | |
1149 CASE(_f##opcname): \ | |
1150 SET_STACK_FLOAT(VMfloat##opname(STACK_FLOAT(-2), \ | |
1151 STACK_FLOAT(-1)), \ | |
1152 -2); \ | |
1153 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1154 | |
1155 | |
1156 OPC_FLOAT_BINARY(add, Add); | |
1157 OPC_FLOAT_BINARY(sub, Sub); | |
1158 OPC_FLOAT_BINARY(mul, Mul); | |
1159 OPC_FLOAT_BINARY(div, Div); | |
1160 OPC_FLOAT_BINARY(rem, Rem); | |
1161 | |
1162 /* Shift operations | |
1163 * Shift left int and long: ishl, lshl | |
1164 * Logical shift right int and long w/zero extension: iushr, lushr | |
1165 * Arithmetic shift right int and long w/sign extension: ishr, lshr | |
1166 */ | |
1167 | |
1168 #undef OPC_SHIFT_BINARY | |
1169 #define OPC_SHIFT_BINARY(opcname, opname) \ | |
1170 CASE(_i##opcname): \ | |
1171 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
1172 STACK_INT(-1)), \ | |
1173 -2); \ | |
1174 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1175 CASE(_l##opcname): \ | |
1176 { \ | |
1177 SET_STACK_LONG(VMlong##opname(STACK_LONG(-2), \ | |
1178 STACK_INT(-1)), \ | |
1179 -2); \ | |
1180 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1181 } | |
1182 | |
1183 OPC_SHIFT_BINARY(shl, Shl); | |
1184 OPC_SHIFT_BINARY(shr, Shr); | |
1185 OPC_SHIFT_BINARY(ushr, Ushr); | |
1186 | |
1187 /* Increment local variable by constant */ | |
1188 CASE(_iinc): | |
1189 { | |
1190 // locals[pc[1]].j.i += (jbyte)(pc[2]); | |
1191 SET_LOCALS_INT(LOCALS_INT(pc[1]) + (jbyte)(pc[2]), pc[1]); | |
1192 UPDATE_PC_AND_CONTINUE(3); | |
1193 } | |
1194 | |
1195 /* negate the value on the top of the stack */ | |
1196 | |
1197 CASE(_ineg): | |
1198 SET_STACK_INT(VMintNeg(STACK_INT(-1)), -1); | |
1199 UPDATE_PC_AND_CONTINUE(1); | |
1200 | |
1201 CASE(_fneg): | |
1202 SET_STACK_FLOAT(VMfloatNeg(STACK_FLOAT(-1)), -1); | |
1203 UPDATE_PC_AND_CONTINUE(1); | |
1204 | |
1205 CASE(_lneg): | |
1206 { | |
1207 SET_STACK_LONG(VMlongNeg(STACK_LONG(-1)), -1); | |
1208 UPDATE_PC_AND_CONTINUE(1); | |
1209 } | |
1210 | |
1211 CASE(_dneg): | |
1212 { | |
1213 SET_STACK_DOUBLE(VMdoubleNeg(STACK_DOUBLE(-1)), -1); | |
1214 UPDATE_PC_AND_CONTINUE(1); | |
1215 } | |
1216 | |
1217 /* Conversion operations */ | |
1218 | |
1219 CASE(_i2f): /* convert top of stack int to float */ | |
1220 SET_STACK_FLOAT(VMint2Float(STACK_INT(-1)), -1); | |
1221 UPDATE_PC_AND_CONTINUE(1); | |
1222 | |
1223 CASE(_i2l): /* convert top of stack int to long */ | |
1224 { | |
1225 // this is ugly QQQ | |
1226 jlong r = VMint2Long(STACK_INT(-1)); | |
1227 MORE_STACK(-1); // Pop | |
1228 SET_STACK_LONG(r, 1); | |
1229 | |
1230 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1231 } | |
1232 | |
1233 CASE(_i2d): /* convert top of stack int to double */ | |
1234 { | |
1235 // this is ugly QQQ (why cast to jlong?? ) | |
1236 jdouble r = (jlong)STACK_INT(-1); | |
1237 MORE_STACK(-1); // Pop | |
1238 SET_STACK_DOUBLE(r, 1); | |
1239 | |
1240 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1241 } | |
1242 | |
1243 CASE(_l2i): /* convert top of stack long to int */ | |
1244 { | |
1245 jint r = VMlong2Int(STACK_LONG(-1)); | |
1246 MORE_STACK(-2); // Pop | |
1247 SET_STACK_INT(r, 0); | |
1248 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1249 } | |
1250 | |
1251 CASE(_l2f): /* convert top of stack long to float */ | |
1252 { | |
1253 jlong r = STACK_LONG(-1); | |
1254 MORE_STACK(-2); // Pop | |
1255 SET_STACK_FLOAT(VMlong2Float(r), 0); | |
1256 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1257 } | |
1258 | |
1259 CASE(_l2d): /* convert top of stack long to double */ | |
1260 { | |
1261 jlong r = STACK_LONG(-1); | |
1262 MORE_STACK(-2); // Pop | |
1263 SET_STACK_DOUBLE(VMlong2Double(r), 1); | |
1264 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1265 } | |
1266 | |
1267 CASE(_f2i): /* Convert top of stack float to int */ | |
1268 SET_STACK_INT(SharedRuntime::f2i(STACK_FLOAT(-1)), -1); | |
1269 UPDATE_PC_AND_CONTINUE(1); | |
1270 | |
1271 CASE(_f2l): /* convert top of stack float to long */ | |
1272 { | |
1273 jlong r = SharedRuntime::f2l(STACK_FLOAT(-1)); | |
1274 MORE_STACK(-1); // POP | |
1275 SET_STACK_LONG(r, 1); | |
1276 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1277 } | |
1278 | |
1279 CASE(_f2d): /* convert top of stack float to double */ | |
1280 { | |
1281 jfloat f; | |
1282 jdouble r; | |
1283 f = STACK_FLOAT(-1); | |
1284 #ifdef IA64 | |
1285 // IA64 gcc bug | |
1286 r = ( f == 0.0f ) ? (jdouble) f : (jdouble) f + ia64_double_zero; | |
1287 #else | |
1288 r = (jdouble) f; | |
1289 #endif | |
1290 MORE_STACK(-1); // POP | |
1291 SET_STACK_DOUBLE(r, 1); | |
1292 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1293 } | |
1294 | |
1295 CASE(_d2i): /* convert top of stack double to int */ | |
1296 { | |
1297 jint r1 = SharedRuntime::d2i(STACK_DOUBLE(-1)); | |
1298 MORE_STACK(-2); | |
1299 SET_STACK_INT(r1, 0); | |
1300 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1301 } | |
1302 | |
1303 CASE(_d2f): /* convert top of stack double to float */ | |
1304 { | |
1305 jfloat r1 = VMdouble2Float(STACK_DOUBLE(-1)); | |
1306 MORE_STACK(-2); | |
1307 SET_STACK_FLOAT(r1, 0); | |
1308 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1309 } | |
1310 | |
1311 CASE(_d2l): /* convert top of stack double to long */ | |
1312 { | |
1313 jlong r1 = SharedRuntime::d2l(STACK_DOUBLE(-1)); | |
1314 MORE_STACK(-2); | |
1315 SET_STACK_LONG(r1, 1); | |
1316 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
1317 } | |
1318 | |
1319 CASE(_i2b): | |
1320 SET_STACK_INT(VMint2Byte(STACK_INT(-1)), -1); | |
1321 UPDATE_PC_AND_CONTINUE(1); | |
1322 | |
1323 CASE(_i2c): | |
1324 SET_STACK_INT(VMint2Char(STACK_INT(-1)), -1); | |
1325 UPDATE_PC_AND_CONTINUE(1); | |
1326 | |
1327 CASE(_i2s): | |
1328 SET_STACK_INT(VMint2Short(STACK_INT(-1)), -1); | |
1329 UPDATE_PC_AND_CONTINUE(1); | |
1330 | |
1331 /* comparison operators */ | |
1332 | |
1333 | |
1334 #define COMPARISON_OP(name, comparison) \ | |
1335 CASE(_if_icmp##name): { \ | |
1336 int skip = (STACK_INT(-2) comparison STACK_INT(-1)) \ | |
1337 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1338 address branch_pc = pc; \ | |
1339 UPDATE_PC_AND_TOS(skip, -2); \ | |
1340 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1341 CONTINUE; \ | |
1342 } \ | |
1343 CASE(_if##name): { \ | |
1344 int skip = (STACK_INT(-1) comparison 0) \ | |
1345 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1346 address branch_pc = pc; \ | |
1347 UPDATE_PC_AND_TOS(skip, -1); \ | |
1348 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1349 CONTINUE; \ | |
1350 } | |
1351 | |
1352 #define COMPARISON_OP2(name, comparison) \ | |
1353 COMPARISON_OP(name, comparison) \ | |
1354 CASE(_if_acmp##name): { \ | |
1355 int skip = (STACK_OBJECT(-2) comparison STACK_OBJECT(-1)) \ | |
1356 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
1357 address branch_pc = pc; \ | |
1358 UPDATE_PC_AND_TOS(skip, -2); \ | |
1359 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1360 CONTINUE; \ | |
1361 } | |
1362 | |
1363 #define NULL_COMPARISON_NOT_OP(name) \ | |
1364 CASE(_if##name): { \ | |
520
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changeset
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1365 int skip = (!(STACK_OBJECT(-1) == NULL)) \ |
0 | 1366 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
1367 address branch_pc = pc; \ | |
1368 UPDATE_PC_AND_TOS(skip, -1); \ | |
1369 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1370 CONTINUE; \ | |
1371 } | |
1372 | |
1373 #define NULL_COMPARISON_OP(name) \ | |
1374 CASE(_if##name): { \ | |
520
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1375 int skip = ((STACK_OBJECT(-1) == NULL)) \ |
0 | 1376 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
1377 address branch_pc = pc; \ | |
1378 UPDATE_PC_AND_TOS(skip, -1); \ | |
1379 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
1380 CONTINUE; \ | |
1381 } | |
1382 COMPARISON_OP(lt, <); | |
1383 COMPARISON_OP(gt, >); | |
1384 COMPARISON_OP(le, <=); | |
1385 COMPARISON_OP(ge, >=); | |
1386 COMPARISON_OP2(eq, ==); /* include ref comparison */ | |
1387 COMPARISON_OP2(ne, !=); /* include ref comparison */ | |
1388 NULL_COMPARISON_OP(null); | |
1389 NULL_COMPARISON_NOT_OP(nonnull); | |
1390 | |
1391 /* Goto pc at specified offset in switch table. */ | |
1392 | |
1393 CASE(_tableswitch): { | |
1394 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
1395 int32_t key = STACK_INT(-1); | |
1396 int32_t low = Bytes::get_Java_u4((address)&lpc[1]); | |
1397 int32_t high = Bytes::get_Java_u4((address)&lpc[2]); | |
1398 int32_t skip; | |
1399 key -= low; | |
1400 skip = ((uint32_t) key > (uint32_t)(high - low)) | |
1401 ? Bytes::get_Java_u4((address)&lpc[0]) | |
1402 : Bytes::get_Java_u4((address)&lpc[key + 3]); | |
1403 // Does this really need a full backedge check (osr?) | |
1404 address branch_pc = pc; | |
1405 UPDATE_PC_AND_TOS(skip, -1); | |
1406 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
1407 CONTINUE; | |
1408 } | |
1409 | |
1410 /* Goto pc whose table entry matches specified key */ | |
1411 | |
1412 CASE(_lookupswitch): { | |
1413 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
1414 int32_t key = STACK_INT(-1); | |
1415 int32_t skip = Bytes::get_Java_u4((address) lpc); /* default amount */ | |
1416 int32_t npairs = Bytes::get_Java_u4((address) &lpc[1]); | |
1417 while (--npairs >= 0) { | |
1418 lpc += 2; | |
1419 if (key == (int32_t)Bytes::get_Java_u4((address)lpc)) { | |
1420 skip = Bytes::get_Java_u4((address)&lpc[1]); | |
1421 break; | |
1422 } | |
1423 } | |
1424 address branch_pc = pc; | |
1425 UPDATE_PC_AND_TOS(skip, -1); | |
1426 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
1427 CONTINUE; | |
1428 } | |
1429 | |
1430 CASE(_fcmpl): | |
1431 CASE(_fcmpg): | |
1432 { | |
1433 SET_STACK_INT(VMfloatCompare(STACK_FLOAT(-2), | |
1434 STACK_FLOAT(-1), | |
1435 (opcode == Bytecodes::_fcmpl ? -1 : 1)), | |
1436 -2); | |
1437 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1438 } | |
1439 | |
1440 CASE(_dcmpl): | |
1441 CASE(_dcmpg): | |
1442 { | |
1443 int r = VMdoubleCompare(STACK_DOUBLE(-3), | |
1444 STACK_DOUBLE(-1), | |
1445 (opcode == Bytecodes::_dcmpl ? -1 : 1)); | |
1446 MORE_STACK(-4); // Pop | |
1447 SET_STACK_INT(r, 0); | |
1448 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1449 } | |
1450 | |
1451 CASE(_lcmp): | |
1452 { | |
1453 int r = VMlongCompare(STACK_LONG(-3), STACK_LONG(-1)); | |
1454 MORE_STACK(-4); | |
1455 SET_STACK_INT(r, 0); | |
1456 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
1457 } | |
1458 | |
1459 | |
1460 /* Return from a method */ | |
1461 | |
1462 CASE(_areturn): | |
1463 CASE(_ireturn): | |
1464 CASE(_freturn): | |
1465 { | |
1466 // Allow a safepoint before returning to frame manager. | |
1467 SAFEPOINT; | |
1468 | |
1469 goto handle_return; | |
1470 } | |
1471 | |
1472 CASE(_lreturn): | |
1473 CASE(_dreturn): | |
1474 { | |
1475 // Allow a safepoint before returning to frame manager. | |
1476 SAFEPOINT; | |
1477 goto handle_return; | |
1478 } | |
1479 | |
1480 CASE(_return_register_finalizer): { | |
1481 | |
1482 oop rcvr = LOCALS_OBJECT(0); | |
1483 if (rcvr->klass()->klass_part()->has_finalizer()) { | |
1484 CALL_VM(InterpreterRuntime::register_finalizer(THREAD, rcvr), handle_exception); | |
1485 } | |
1486 goto handle_return; | |
1487 } | |
1488 CASE(_return): { | |
1489 | |
1490 // Allow a safepoint before returning to frame manager. | |
1491 SAFEPOINT; | |
1492 goto handle_return; | |
1493 } | |
1494 | |
1495 /* Array access byte-codes */ | |
1496 | |
1497 /* Every array access byte-code starts out like this */ | |
1498 // arrayOopDesc* arrObj = (arrayOopDesc*)STACK_OBJECT(arrayOff); | |
1499 #define ARRAY_INTRO(arrayOff) \ | |
1500 arrayOop arrObj = (arrayOop)STACK_OBJECT(arrayOff); \ | |
1501 jint index = STACK_INT(arrayOff + 1); \ | |
1502 char message[jintAsStringSize]; \ | |
1503 CHECK_NULL(arrObj); \ | |
1504 if ((uint32_t)index >= (uint32_t)arrObj->length()) { \ | |
1505 sprintf(message, "%d", index); \ | |
1506 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), \ | |
1507 message); \ | |
1508 } | |
1509 | |
1510 /* 32-bit loads. These handle conversion from < 32-bit types */ | |
1511 #define ARRAY_LOADTO32(T, T2, format, stackRes, extra) \ | |
1512 { \ | |
1513 ARRAY_INTRO(-2); \ | |
1514 extra; \ | |
1515 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), \ | |
1516 -2); \ | |
1517 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
1518 } | |
1519 | |
1520 /* 64-bit loads */ | |
1521 #define ARRAY_LOADTO64(T,T2, stackRes, extra) \ | |
1522 { \ | |
1523 ARRAY_INTRO(-2); \ | |
1524 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), -1); \ | |
1525 extra; \ | |
1526 UPDATE_PC_AND_CONTINUE(1); \ | |
1527 } | |
1528 | |
1529 CASE(_iaload): | |
1530 ARRAY_LOADTO32(T_INT, jint, "%d", STACK_INT, 0); | |
1531 CASE(_faload): | |
1532 ARRAY_LOADTO32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
1533 CASE(_aaload): | |
1534 ARRAY_LOADTO32(T_OBJECT, oop, INTPTR_FORMAT, STACK_OBJECT, 0); | |
1535 CASE(_baload): | |
1536 ARRAY_LOADTO32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
1537 CASE(_caload): | |
1538 ARRAY_LOADTO32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
1539 CASE(_saload): | |
1540 ARRAY_LOADTO32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
1541 CASE(_laload): | |
1542 ARRAY_LOADTO64(T_LONG, jlong, STACK_LONG, 0); | |
1543 CASE(_daload): | |
1544 ARRAY_LOADTO64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
1545 | |
1546 /* 32-bit stores. These handle conversion to < 32-bit types */ | |
1547 #define ARRAY_STOREFROM32(T, T2, format, stackSrc, extra) \ | |
1548 { \ | |
1549 ARRAY_INTRO(-3); \ | |
1550 extra; \ | |
1551 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ | |
1552 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); \ | |
1553 } | |
1554 | |
1555 /* 64-bit stores */ | |
1556 #define ARRAY_STOREFROM64(T, T2, stackSrc, extra) \ | |
1557 { \ | |
1558 ARRAY_INTRO(-4); \ | |
1559 extra; \ | |
1560 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ | |
1561 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -4); \ | |
1562 } | |
1563 | |
1564 CASE(_iastore): | |
1565 ARRAY_STOREFROM32(T_INT, jint, "%d", STACK_INT, 0); | |
1566 CASE(_fastore): | |
1567 ARRAY_STOREFROM32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
1568 /* | |
1569 * This one looks different because of the assignability check | |
1570 */ | |
1571 CASE(_aastore): { | |
1572 oop rhsObject = STACK_OBJECT(-1); | |
1573 ARRAY_INTRO( -3); | |
1574 // arrObj, index are set | |
1575 if (rhsObject != NULL) { | |
1576 /* Check assignability of rhsObject into arrObj */ | |
1577 klassOop rhsKlassOop = rhsObject->klass(); // EBX (subclass) | |
1578 assert(arrObj->klass()->klass()->klass_part()->oop_is_objArrayKlass(), "Ack not an objArrayKlass"); | |
1579 klassOop elemKlassOop = ((objArrayKlass*) arrObj->klass()->klass_part())->element_klass(); // superklass EAX | |
1580 // | |
1581 // Check for compatibilty. This check must not GC!! | |
1582 // Seems way more expensive now that we must dispatch | |
1583 // | |
1584 if (rhsKlassOop != elemKlassOop && !rhsKlassOop->klass_part()->is_subtype_of(elemKlassOop)) { // ebx->is... | |
1585 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayStoreException(), ""); | |
1586 } | |
1587 } | |
1588 oop* elem_loc = (oop*)(((address) arrObj->base(T_OBJECT)) + index * sizeof(oop)); | |
1589 // *(oop*)(((address) arrObj->base(T_OBJECT)) + index * sizeof(oop)) = rhsObject; | |
1590 *elem_loc = rhsObject; | |
1591 // Mark the card | |
1592 OrderAccess::release_store(&BYTE_MAP_BASE[(uintptr_t)elem_loc >> CardTableModRefBS::card_shift], 0); | |
1593 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); | |
1594 } | |
1595 CASE(_bastore): | |
1596 ARRAY_STOREFROM32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
1597 CASE(_castore): | |
1598 ARRAY_STOREFROM32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
1599 CASE(_sastore): | |
1600 ARRAY_STOREFROM32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
1601 CASE(_lastore): | |
1602 ARRAY_STOREFROM64(T_LONG, jlong, STACK_LONG, 0); | |
1603 CASE(_dastore): | |
1604 ARRAY_STOREFROM64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
1605 | |
1606 CASE(_arraylength): | |
1607 { | |
1608 arrayOop ary = (arrayOop) STACK_OBJECT(-1); | |
1609 CHECK_NULL(ary); | |
1610 SET_STACK_INT(ary->length(), -1); | |
1611 UPDATE_PC_AND_CONTINUE(1); | |
1612 } | |
1613 | |
1614 /* monitorenter and monitorexit for locking/unlocking an object */ | |
1615 | |
1616 CASE(_monitorenter): { | |
1617 oop lockee = STACK_OBJECT(-1); | |
1618 // derefing's lockee ought to provoke implicit null check | |
1619 CHECK_NULL(lockee); | |
1620 // find a free monitor or one already allocated for this object | |
1621 // if we find a matching object then we need a new monitor | |
1622 // since this is recursive enter | |
1623 BasicObjectLock* limit = istate->monitor_base(); | |
1624 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
1625 BasicObjectLock* entry = NULL; | |
1626 while (most_recent != limit ) { | |
1627 if (most_recent->obj() == NULL) entry = most_recent; | |
1628 else if (most_recent->obj() == lockee) break; | |
1629 most_recent++; | |
1630 } | |
1631 if (entry != NULL) { | |
1632 entry->set_obj(lockee); | |
1633 markOop displaced = lockee->mark()->set_unlocked(); | |
1634 entry->lock()->set_displaced_header(displaced); | |
1635 if (Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { | |
1636 // Is it simple recursive case? | |
1637 if (THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { | |
1638 entry->lock()->set_displaced_header(NULL); | |
1639 } else { | |
1640 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); | |
1641 } | |
1642 } | |
1643 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1644 } else { | |
1645 istate->set_msg(more_monitors); | |
1646 UPDATE_PC_AND_RETURN(0); // Re-execute | |
1647 } | |
1648 } | |
1649 | |
1650 CASE(_monitorexit): { | |
1651 oop lockee = STACK_OBJECT(-1); | |
1652 CHECK_NULL(lockee); | |
1653 // derefing's lockee ought to provoke implicit null check | |
1654 // find our monitor slot | |
1655 BasicObjectLock* limit = istate->monitor_base(); | |
1656 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
1657 while (most_recent != limit ) { | |
1658 if ((most_recent)->obj() == lockee) { | |
1659 BasicLock* lock = most_recent->lock(); | |
1660 markOop header = lock->displaced_header(); | |
1661 most_recent->set_obj(NULL); | |
1662 // If it isn't recursive we either must swap old header or call the runtime | |
1663 if (header != NULL) { | |
1664 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { | |
1665 // restore object for the slow case | |
1666 most_recent->set_obj(lockee); | |
1667 CALL_VM(InterpreterRuntime::monitorexit(THREAD, most_recent), handle_exception); | |
1668 } | |
1669 } | |
1670 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
1671 } | |
1672 most_recent++; | |
1673 } | |
1674 // Need to throw illegal monitor state exception | |
1675 CALL_VM(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD), handle_exception); | |
1676 // Should never reach here... | |
1677 assert(false, "Should have thrown illegal monitor exception"); | |
1678 } | |
1679 | |
1680 /* All of the non-quick opcodes. */ | |
1681 | |
1682 /* -Set clobbersCpIndex true if the quickened opcode clobbers the | |
1683 * constant pool index in the instruction. | |
1684 */ | |
1685 CASE(_getfield): | |
1686 CASE(_getstatic): | |
1687 { | |
1688 u2 index; | |
1689 ConstantPoolCacheEntry* cache; | |
1690 index = Bytes::get_native_u2(pc+1); | |
1691 | |
1692 // QQQ Need to make this as inlined as possible. Probably need to | |
1693 // split all the bytecode cases out so c++ compiler has a chance | |
1694 // for constant prop to fold everything possible away. | |
1695 | |
1696 cache = cp->entry_at(index); | |
1697 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
1698 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
1699 handle_exception); | |
1700 cache = cp->entry_at(index); | |
1701 } | |
1702 | |
1703 #ifdef VM_JVMTI | |
1704 if (_jvmti_interp_events) { | |
1705 int *count_addr; | |
1706 oop obj; | |
1707 // Check to see if a field modification watch has been set | |
1708 // before we take the time to call into the VM. | |
1709 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
1710 if ( *count_addr > 0 ) { | |
1711 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
1712 obj = (oop)NULL; | |
1713 } else { | |
1714 obj = (oop) STACK_OBJECT(-1); | |
1715 } | |
1716 CALL_VM(InterpreterRuntime::post_field_access(THREAD, | |
1717 obj, | |
1718 cache), | |
1719 handle_exception); | |
1720 } | |
1721 } | |
1722 #endif /* VM_JVMTI */ | |
1723 | |
1724 oop obj; | |
1725 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
1726 obj = (oop) cache->f1(); | |
1727 MORE_STACK(1); // Assume single slot push | |
1728 } else { | |
1729 obj = (oop) STACK_OBJECT(-1); | |
1730 CHECK_NULL(obj); | |
1731 } | |
1732 | |
1733 // | |
1734 // Now store the result on the stack | |
1735 // | |
1736 TosState tos_type = cache->flag_state(); | |
1737 int field_offset = cache->f2(); | |
1738 if (cache->is_volatile()) { | |
1739 if (tos_type == atos) { | |
1740 SET_STACK_OBJECT(obj->obj_field_acquire(field_offset), -1); | |
1741 } else if (tos_type == itos) { | |
1742 SET_STACK_INT(obj->int_field_acquire(field_offset), -1); | |
1743 } else if (tos_type == ltos) { | |
1744 SET_STACK_LONG(obj->long_field_acquire(field_offset), 0); | |
1745 MORE_STACK(1); | |
1746 } else if (tos_type == btos) { | |
1747 SET_STACK_INT(obj->byte_field_acquire(field_offset), -1); | |
1748 } else if (tos_type == ctos) { | |
1749 SET_STACK_INT(obj->char_field_acquire(field_offset), -1); | |
1750 } else if (tos_type == stos) { | |
1751 SET_STACK_INT(obj->short_field_acquire(field_offset), -1); | |
1752 } else if (tos_type == ftos) { | |
1753 SET_STACK_FLOAT(obj->float_field_acquire(field_offset), -1); | |
1754 } else { | |
1755 SET_STACK_DOUBLE(obj->double_field_acquire(field_offset), 0); | |
1756 MORE_STACK(1); | |
1757 } | |
1758 } else { | |
1759 if (tos_type == atos) { | |
1760 SET_STACK_OBJECT(obj->obj_field(field_offset), -1); | |
1761 } else if (tos_type == itos) { | |
1762 SET_STACK_INT(obj->int_field(field_offset), -1); | |
1763 } else if (tos_type == ltos) { | |
1764 SET_STACK_LONG(obj->long_field(field_offset), 0); | |
1765 MORE_STACK(1); | |
1766 } else if (tos_type == btos) { | |
1767 SET_STACK_INT(obj->byte_field(field_offset), -1); | |
1768 } else if (tos_type == ctos) { | |
1769 SET_STACK_INT(obj->char_field(field_offset), -1); | |
1770 } else if (tos_type == stos) { | |
1771 SET_STACK_INT(obj->short_field(field_offset), -1); | |
1772 } else if (tos_type == ftos) { | |
1773 SET_STACK_FLOAT(obj->float_field(field_offset), -1); | |
1774 } else { | |
1775 SET_STACK_DOUBLE(obj->double_field(field_offset), 0); | |
1776 MORE_STACK(1); | |
1777 } | |
1778 } | |
1779 | |
1780 UPDATE_PC_AND_CONTINUE(3); | |
1781 } | |
1782 | |
1783 CASE(_putfield): | |
1784 CASE(_putstatic): | |
1785 { | |
1786 u2 index = Bytes::get_native_u2(pc+1); | |
1787 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
1788 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
1789 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
1790 handle_exception); | |
1791 cache = cp->entry_at(index); | |
1792 } | |
1793 | |
1794 #ifdef VM_JVMTI | |
1795 if (_jvmti_interp_events) { | |
1796 int *count_addr; | |
1797 oop obj; | |
1798 // Check to see if a field modification watch has been set | |
1799 // before we take the time to call into the VM. | |
1800 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
1801 if ( *count_addr > 0 ) { | |
1802 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
1803 obj = (oop)NULL; | |
1804 } | |
1805 else { | |
1806 if (cache->is_long() || cache->is_double()) { | |
1807 obj = (oop) STACK_OBJECT(-3); | |
1808 } else { | |
1809 obj = (oop) STACK_OBJECT(-2); | |
1810 } | |
1811 } | |
1812 | |
1813 CALL_VM(InterpreterRuntime::post_field_modification(THREAD, | |
1814 obj, | |
1815 cache, | |
1816 (jvalue *)STACK_SLOT(-1)), | |
1817 handle_exception); | |
1818 } | |
1819 } | |
1820 #endif /* VM_JVMTI */ | |
1821 | |
1822 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
1823 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
1824 | |
1825 oop obj; | |
1826 int count; | |
1827 TosState tos_type = cache->flag_state(); | |
1828 | |
1829 count = -1; | |
1830 if (tos_type == ltos || tos_type == dtos) { | |
1831 --count; | |
1832 } | |
1833 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
1834 obj = (oop) cache->f1(); | |
1835 } else { | |
1836 --count; | |
1837 obj = (oop) STACK_OBJECT(count); | |
1838 CHECK_NULL(obj); | |
1839 } | |
1840 | |
1841 // | |
1842 // Now store the result | |
1843 // | |
1844 int field_offset = cache->f2(); | |
1845 if (cache->is_volatile()) { | |
1846 if (tos_type == itos) { | |
1847 obj->release_int_field_put(field_offset, STACK_INT(-1)); | |
1848 } else if (tos_type == atos) { | |
1849 obj->release_obj_field_put(field_offset, STACK_OBJECT(-1)); | |
1850 OrderAccess::release_store(&BYTE_MAP_BASE[(uintptr_t)obj >> CardTableModRefBS::card_shift], 0); | |
1851 } else if (tos_type == btos) { | |
1852 obj->release_byte_field_put(field_offset, STACK_INT(-1)); | |
1853 } else if (tos_type == ltos) { | |
1854 obj->release_long_field_put(field_offset, STACK_LONG(-1)); | |
1855 } else if (tos_type == ctos) { | |
1856 obj->release_char_field_put(field_offset, STACK_INT(-1)); | |
1857 } else if (tos_type == stos) { | |
1858 obj->release_short_field_put(field_offset, STACK_INT(-1)); | |
1859 } else if (tos_type == ftos) { | |
1860 obj->release_float_field_put(field_offset, STACK_FLOAT(-1)); | |
1861 } else { | |
1862 obj->release_double_field_put(field_offset, STACK_DOUBLE(-1)); | |
1863 } | |
1864 OrderAccess::storeload(); | |
1865 } else { | |
1866 if (tos_type == itos) { | |
1867 obj->int_field_put(field_offset, STACK_INT(-1)); | |
1868 } else if (tos_type == atos) { | |
1869 obj->obj_field_put(field_offset, STACK_OBJECT(-1)); | |
1870 OrderAccess::release_store(&BYTE_MAP_BASE[(uintptr_t)obj >> CardTableModRefBS::card_shift], 0); | |
1871 } else if (tos_type == btos) { | |
1872 obj->byte_field_put(field_offset, STACK_INT(-1)); | |
1873 } else if (tos_type == ltos) { | |
1874 obj->long_field_put(field_offset, STACK_LONG(-1)); | |
1875 } else if (tos_type == ctos) { | |
1876 obj->char_field_put(field_offset, STACK_INT(-1)); | |
1877 } else if (tos_type == stos) { | |
1878 obj->short_field_put(field_offset, STACK_INT(-1)); | |
1879 } else if (tos_type == ftos) { | |
1880 obj->float_field_put(field_offset, STACK_FLOAT(-1)); | |
1881 } else { | |
1882 obj->double_field_put(field_offset, STACK_DOUBLE(-1)); | |
1883 } | |
1884 } | |
1885 | |
1886 UPDATE_PC_AND_TOS_AND_CONTINUE(3, count); | |
1887 } | |
1888 | |
1889 CASE(_new): { | |
1890 u2 index = Bytes::get_Java_u2(pc+1); | |
1891 constantPoolOop constants = istate->method()->constants(); | |
1892 if (!constants->tag_at(index).is_unresolved_klass()) { | |
1893 // Make sure klass is initialized and doesn't have a finalizer | |
1894 oop entry = (klassOop) *constants->obj_at_addr(index); | |
1895 assert(entry->is_klass(), "Should be resolved klass"); | |
1896 klassOop k_entry = (klassOop) entry; | |
1897 assert(k_entry->klass_part()->oop_is_instance(), "Should be instanceKlass"); | |
1898 instanceKlass* ik = (instanceKlass*) k_entry->klass_part(); | |
1899 if ( ik->is_initialized() && ik->can_be_fastpath_allocated() ) { | |
1900 size_t obj_size = ik->size_helper(); | |
1901 oop result = NULL; | |
1902 // If the TLAB isn't pre-zeroed then we'll have to do it | |
1903 bool need_zero = !ZeroTLAB; | |
1904 if (UseTLAB) { | |
1905 result = (oop) THREAD->tlab().allocate(obj_size); | |
1906 } | |
1907 if (result == NULL) { | |
1908 need_zero = true; | |
1909 // Try allocate in shared eden | |
1910 retry: | |
1911 HeapWord* compare_to = *Universe::heap()->top_addr(); | |
1912 HeapWord* new_top = compare_to + obj_size; | |
1913 if (new_top <= *Universe::heap()->end_addr()) { | |
1914 if (Atomic::cmpxchg_ptr(new_top, Universe::heap()->top_addr(), compare_to) != compare_to) { | |
1915 goto retry; | |
1916 } | |
1917 result = (oop) compare_to; | |
1918 } | |
1919 } | |
1920 if (result != NULL) { | |
1921 // Initialize object (if nonzero size and need) and then the header | |
1922 if (need_zero ) { | |
1923 HeapWord* to_zero = (HeapWord*) result + sizeof(oopDesc) / oopSize; | |
1924 obj_size -= sizeof(oopDesc) / oopSize; | |
1925 if (obj_size > 0 ) { | |
1926 memset(to_zero, 0, obj_size * HeapWordSize); | |
1927 } | |
1928 } | |
1929 if (UseBiasedLocking) { | |
1930 result->set_mark(ik->prototype_header()); | |
1931 } else { | |
1932 result->set_mark(markOopDesc::prototype()); | |
1933 } | |
167
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
123
diff
changeset
|
1934 result->set_klass_gap(0); |
0 | 1935 result->set_klass(k_entry); |
1936 SET_STACK_OBJECT(result, 0); | |
1937 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
1938 } | |
1939 } | |
1940 } | |
1941 // Slow case allocation | |
1942 CALL_VM(InterpreterRuntime::_new(THREAD, METHOD->constants(), index), | |
1943 handle_exception); | |
1944 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
1945 THREAD->set_vm_result(NULL); | |
1946 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
1947 } | |
1948 CASE(_anewarray): { | |
1949 u2 index = Bytes::get_Java_u2(pc+1); | |
1950 jint size = STACK_INT(-1); | |
1951 CALL_VM(InterpreterRuntime::anewarray(THREAD, METHOD->constants(), index, size), | |
1952 handle_exception); | |
1953 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
1954 THREAD->set_vm_result(NULL); | |
1955 UPDATE_PC_AND_CONTINUE(3); | |
1956 } | |
1957 CASE(_multianewarray): { | |
1958 jint dims = *(pc+3); | |
1959 jint size = STACK_INT(-1); | |
1960 // stack grows down, dimensions are up! | |
1961 jint *dimarray = | |
1962 (jint*)&topOfStack[dims * Interpreter::stackElementWords()+ | |
1963 Interpreter::stackElementWords()-1]; | |
1964 //adjust pointer to start of stack element | |
1965 CALL_VM(InterpreterRuntime::multianewarray(THREAD, dimarray), | |
1966 handle_exception); | |
1967 SET_STACK_OBJECT(THREAD->vm_result(), -dims); | |
1968 THREAD->set_vm_result(NULL); | |
1969 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -(dims-1)); | |
1970 } | |
1971 CASE(_checkcast): | |
1972 if (STACK_OBJECT(-1) != NULL) { | |
1973 u2 index = Bytes::get_Java_u2(pc+1); | |
1974 if (ProfileInterpreter) { | |
1975 // needs Profile_checkcast QQQ | |
1976 ShouldNotReachHere(); | |
1977 } | |
1978 // Constant pool may have actual klass or unresolved klass. If it is | |
1979 // unresolved we must resolve it | |
1980 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
1981 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
1982 } | |
1983 klassOop klassOf = (klassOop) *(METHOD->constants()->obj_at_addr(index)); | |
1984 klassOop objKlassOop = STACK_OBJECT(-1)->klass(); //ebx | |
1985 // | |
1986 // Check for compatibilty. This check must not GC!! | |
1987 // Seems way more expensive now that we must dispatch | |
1988 // | |
1989 if (objKlassOop != klassOf && | |
1990 !objKlassOop->klass_part()->is_subtype_of(klassOf)) { | |
1991 ResourceMark rm(THREAD); | |
1992 const char* objName = Klass::cast(objKlassOop)->external_name(); | |
1993 const char* klassName = Klass::cast(klassOf)->external_name(); | |
1994 char* message = SharedRuntime::generate_class_cast_message( | |
1995 objName, klassName); | |
1996 VM_JAVA_ERROR(vmSymbols::java_lang_ClassCastException(), message); | |
1997 } | |
1998 } else { | |
1999 if (UncommonNullCast) { | |
2000 // istate->method()->set_null_cast_seen(); | |
2001 // [RGV] Not sure what to do here! | |
2002 | |
2003 } | |
2004 } | |
2005 UPDATE_PC_AND_CONTINUE(3); | |
2006 | |
2007 CASE(_instanceof): | |
2008 if (STACK_OBJECT(-1) == NULL) { | |
2009 SET_STACK_INT(0, -1); | |
2010 } else { | |
2011 u2 index = Bytes::get_Java_u2(pc+1); | |
2012 // Constant pool may have actual klass or unresolved klass. If it is | |
2013 // unresolved we must resolve it | |
2014 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
2015 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
2016 } | |
2017 klassOop klassOf = (klassOop) *(METHOD->constants()->obj_at_addr(index)); | |
2018 klassOop objKlassOop = STACK_OBJECT(-1)->klass(); | |
2019 // | |
2020 // Check for compatibilty. This check must not GC!! | |
2021 // Seems way more expensive now that we must dispatch | |
2022 // | |
2023 if ( objKlassOop == klassOf || objKlassOop->klass_part()->is_subtype_of(klassOf)) { | |
2024 SET_STACK_INT(1, -1); | |
2025 } else { | |
2026 SET_STACK_INT(0, -1); | |
2027 } | |
2028 } | |
2029 UPDATE_PC_AND_CONTINUE(3); | |
2030 | |
2031 CASE(_ldc_w): | |
2032 CASE(_ldc): | |
2033 { | |
2034 u2 index; | |
2035 bool wide = false; | |
2036 int incr = 2; // frequent case | |
2037 if (opcode == Bytecodes::_ldc) { | |
2038 index = pc[1]; | |
2039 } else { | |
2040 index = Bytes::get_Java_u2(pc+1); | |
2041 incr = 3; | |
2042 wide = true; | |
2043 } | |
2044 | |
2045 constantPoolOop constants = METHOD->constants(); | |
2046 switch (constants->tag_at(index).value()) { | |
2047 case JVM_CONSTANT_Integer: | |
2048 SET_STACK_INT(constants->int_at(index), 0); | |
2049 break; | |
2050 | |
2051 case JVM_CONSTANT_Float: | |
2052 SET_STACK_FLOAT(constants->float_at(index), 0); | |
2053 break; | |
2054 | |
2055 case JVM_CONSTANT_String: | |
2056 SET_STACK_OBJECT(constants->resolved_string_at(index), 0); | |
2057 break; | |
2058 | |
2059 case JVM_CONSTANT_Class: | |
2060 SET_STACK_OBJECT(constants->resolved_klass_at(index)->klass_part()->java_mirror(), 0); | |
2061 break; | |
2062 | |
2063 case JVM_CONSTANT_UnresolvedString: | |
2064 case JVM_CONSTANT_UnresolvedClass: | |
2065 case JVM_CONSTANT_UnresolvedClassInError: | |
2066 CALL_VM(InterpreterRuntime::ldc(THREAD, wide), handle_exception); | |
2067 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
2068 THREAD->set_vm_result(NULL); | |
2069 break; | |
2070 | |
2071 #if 0 | |
2072 CASE(_fast_igetfield): | |
2073 CASE(_fastagetfield): | |
2074 CASE(_fast_aload_0): | |
2075 CASE(_fast_iaccess_0): | |
2076 CASE(__fast_aaccess_0): | |
2077 CASE(_fast_linearswitch): | |
2078 CASE(_fast_binaryswitch): | |
2079 fatal("unsupported fast bytecode"); | |
2080 #endif | |
2081 | |
2082 default: ShouldNotReachHere(); | |
2083 } | |
2084 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); | |
2085 } | |
2086 | |
2087 CASE(_ldc2_w): | |
2088 { | |
2089 u2 index = Bytes::get_Java_u2(pc+1); | |
2090 | |
2091 constantPoolOop constants = METHOD->constants(); | |
2092 switch (constants->tag_at(index).value()) { | |
2093 | |
2094 case JVM_CONSTANT_Long: | |
2095 SET_STACK_LONG(constants->long_at(index), 1); | |
2096 break; | |
2097 | |
2098 case JVM_CONSTANT_Double: | |
2099 SET_STACK_DOUBLE(constants->double_at(index), 1); | |
2100 break; | |
2101 default: ShouldNotReachHere(); | |
2102 } | |
2103 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 2); | |
2104 } | |
2105 | |
2106 CASE(_invokeinterface): { | |
2107 u2 index = Bytes::get_native_u2(pc+1); | |
2108 | |
2109 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2110 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2111 | |
2112 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2113 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
2114 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
2115 handle_exception); | |
2116 cache = cp->entry_at(index); | |
2117 } | |
2118 | |
2119 istate->set_msg(call_method); | |
2120 | |
2121 // Special case of invokeinterface called for virtual method of | |
2122 // java.lang.Object. See cpCacheOop.cpp for details. | |
2123 // This code isn't produced by javac, but could be produced by | |
2124 // another compliant java compiler. | |
2125 if (cache->is_methodInterface()) { | |
2126 methodOop callee; | |
2127 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
2128 if (cache->is_vfinal()) { | |
2129 callee = (methodOop) cache->f2(); | |
2130 } else { | |
2131 // get receiver | |
2132 int parms = cache->parameter_size(); | |
2133 // Same comments as invokevirtual apply here | |
2134 instanceKlass* rcvrKlass = (instanceKlass*) | |
2135 STACK_OBJECT(-parms)->klass()->klass_part(); | |
2136 callee = (methodOop) rcvrKlass->start_of_vtable()[ cache->f2()]; | |
2137 } | |
2138 istate->set_callee(callee); | |
2139 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2140 #ifdef VM_JVMTI | |
2141 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2142 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2143 } | |
2144 #endif /* VM_JVMTI */ | |
2145 istate->set_bcp_advance(5); | |
2146 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2147 } | |
2148 | |
2149 // this could definitely be cleaned up QQQ | |
2150 methodOop callee; | |
2151 klassOop iclass = (klassOop)cache->f1(); | |
2152 // instanceKlass* interface = (instanceKlass*) iclass->klass_part(); | |
2153 // get receiver | |
2154 int parms = cache->parameter_size(); | |
2155 oop rcvr = STACK_OBJECT(-parms); | |
2156 CHECK_NULL(rcvr); | |
2157 instanceKlass* int2 = (instanceKlass*) rcvr->klass()->klass_part(); | |
2158 itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable(); | |
2159 int i; | |
2160 for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) { | |
2161 if (ki->interface_klass() == iclass) break; | |
2162 } | |
2163 // If the interface isn't found, this class doesn't implement this | |
2164 // interface. The link resolver checks this but only for the first | |
2165 // time this interface is called. | |
2166 if (i == int2->itable_length()) { | |
2167 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), ""); | |
2168 } | |
2169 int mindex = cache->f2(); | |
2170 itableMethodEntry* im = ki->first_method_entry(rcvr->klass()); | |
2171 callee = im[mindex].method(); | |
2172 if (callee == NULL) { | |
2173 VM_JAVA_ERROR(vmSymbols::java_lang_AbstractMethodError(), ""); | |
2174 } | |
2175 | |
2176 istate->set_callee(callee); | |
2177 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2178 #ifdef VM_JVMTI | |
2179 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2180 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2181 } | |
2182 #endif /* VM_JVMTI */ | |
2183 istate->set_bcp_advance(5); | |
2184 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2185 } | |
2186 | |
2187 CASE(_invokevirtual): | |
2188 CASE(_invokespecial): | |
2189 CASE(_invokestatic): { | |
2190 u2 index = Bytes::get_native_u2(pc+1); | |
2191 | |
2192 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
2193 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
2194 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
2195 | |
2196 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
2197 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
2198 handle_exception); | |
2199 cache = cp->entry_at(index); | |
2200 } | |
2201 | |
2202 istate->set_msg(call_method); | |
2203 { | |
2204 methodOop callee; | |
2205 if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) { | |
2206 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
2207 if (cache->is_vfinal()) callee = (methodOop) cache->f2(); | |
2208 else { | |
2209 // get receiver | |
2210 int parms = cache->parameter_size(); | |
2211 // this works but needs a resourcemark and seems to create a vtable on every call: | |
2212 // methodOop callee = rcvr->klass()->klass_part()->vtable()->method_at(cache->f2()); | |
2213 // | |
2214 // this fails with an assert | |
2215 // instanceKlass* rcvrKlass = instanceKlass::cast(STACK_OBJECT(-parms)->klass()); | |
2216 // but this works | |
2217 instanceKlass* rcvrKlass = (instanceKlass*) STACK_OBJECT(-parms)->klass()->klass_part(); | |
2218 /* | |
2219 Executing this code in java.lang.String: | |
2220 public String(char value[]) { | |
2221 this.count = value.length; | |
2222 this.value = (char[])value.clone(); | |
2223 } | |
2224 | |
2225 a find on rcvr->klass()->klass_part() reports: | |
2226 {type array char}{type array class} | |
2227 - klass: {other class} | |
2228 | |
2229 but using instanceKlass::cast(STACK_OBJECT(-parms)->klass()) causes in assertion failure | |
2230 because rcvr->klass()->klass_part()->oop_is_instance() == 0 | |
2231 However it seems to have a vtable in the right location. Huh? | |
2232 | |
2233 */ | |
2234 callee = (methodOop) rcvrKlass->start_of_vtable()[ cache->f2()]; | |
2235 } | |
2236 } else { | |
2237 if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) { | |
2238 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
2239 } | |
2240 callee = (methodOop) cache->f1(); | |
2241 } | |
2242 | |
2243 istate->set_callee(callee); | |
2244 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
2245 #ifdef VM_JVMTI | |
2246 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
2247 istate->set_callee_entry_point(callee->interpreter_entry()); | |
2248 } | |
2249 #endif /* VM_JVMTI */ | |
2250 istate->set_bcp_advance(3); | |
2251 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
2252 } | |
2253 } | |
2254 | |
2255 /* Allocate memory for a new java object. */ | |
2256 | |
2257 CASE(_newarray): { | |
2258 BasicType atype = (BasicType) *(pc+1); | |
2259 jint size = STACK_INT(-1); | |
2260 CALL_VM(InterpreterRuntime::newarray(THREAD, atype, size), | |
2261 handle_exception); | |
2262 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
2263 THREAD->set_vm_result(NULL); | |
2264 | |
2265 UPDATE_PC_AND_CONTINUE(2); | |
2266 } | |
2267 | |
2268 /* Throw an exception. */ | |
2269 | |
2270 CASE(_athrow): { | |
2271 oop except_oop = STACK_OBJECT(-1); | |
2272 CHECK_NULL(except_oop); | |
2273 // set pending_exception so we use common code | |
2274 THREAD->set_pending_exception(except_oop, NULL, 0); | |
2275 goto handle_exception; | |
2276 } | |
2277 | |
2278 /* goto and jsr. They are exactly the same except jsr pushes | |
2279 * the address of the next instruction first. | |
2280 */ | |
2281 | |
2282 CASE(_jsr): { | |
2283 /* push bytecode index on stack */ | |
2284 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 3), 0); | |
2285 MORE_STACK(1); | |
2286 /* FALL THROUGH */ | |
2287 } | |
2288 | |
2289 CASE(_goto): | |
2290 { | |
2291 int16_t offset = (int16_t)Bytes::get_Java_u2(pc + 1); | |
2292 address branch_pc = pc; | |
2293 UPDATE_PC(offset); | |
2294 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
2295 CONTINUE; | |
2296 } | |
2297 | |
2298 CASE(_jsr_w): { | |
2299 /* push return address on the stack */ | |
2300 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 5), 0); | |
2301 MORE_STACK(1); | |
2302 /* FALL THROUGH */ | |
2303 } | |
2304 | |
2305 CASE(_goto_w): | |
2306 { | |
2307 int32_t offset = Bytes::get_Java_u4(pc + 1); | |
2308 address branch_pc = pc; | |
2309 UPDATE_PC(offset); | |
2310 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
2311 CONTINUE; | |
2312 } | |
2313 | |
2314 /* return from a jsr or jsr_w */ | |
2315 | |
2316 CASE(_ret): { | |
2317 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(pc[1])); | |
2318 UPDATE_PC_AND_CONTINUE(0); | |
2319 } | |
2320 | |
2321 /* debugger breakpoint */ | |
2322 | |
2323 CASE(_breakpoint): { | |
2324 Bytecodes::Code original_bytecode; | |
2325 DECACHE_STATE(); | |
2326 SET_LAST_JAVA_FRAME(); | |
2327 original_bytecode = InterpreterRuntime::get_original_bytecode_at(THREAD, | |
2328 METHOD, pc); | |
2329 RESET_LAST_JAVA_FRAME(); | |
2330 CACHE_STATE(); | |
2331 if (THREAD->has_pending_exception()) goto handle_exception; | |
2332 CALL_VM(InterpreterRuntime::_breakpoint(THREAD, METHOD, pc), | |
2333 handle_exception); | |
2334 | |
2335 opcode = (jubyte)original_bytecode; | |
2336 goto opcode_switch; | |
2337 } | |
2338 | |
2339 DEFAULT: | |
2340 fatal2("\t*** Unimplemented opcode: %d = %s\n", | |
2341 opcode, Bytecodes::name((Bytecodes::Code)opcode)); | |
2342 goto finish; | |
2343 | |
2344 } /* switch(opc) */ | |
2345 | |
2346 | |
2347 #ifdef USELABELS | |
2348 check_for_exception: | |
2349 #endif | |
2350 { | |
2351 if (!THREAD->has_pending_exception()) { | |
2352 CONTINUE; | |
2353 } | |
2354 /* We will be gcsafe soon, so flush our state. */ | |
2355 DECACHE_PC(); | |
2356 goto handle_exception; | |
2357 } | |
2358 do_continue: ; | |
2359 | |
2360 } /* while (1) interpreter loop */ | |
2361 | |
2362 | |
2363 // An exception exists in the thread state see whether this activation can handle it | |
2364 handle_exception: { | |
2365 | |
2366 HandleMarkCleaner __hmc(THREAD); | |
2367 Handle except_oop(THREAD, THREAD->pending_exception()); | |
2368 // Prevent any subsequent HandleMarkCleaner in the VM | |
2369 // from freeing the except_oop handle. | |
2370 HandleMark __hm(THREAD); | |
2371 | |
2372 THREAD->clear_pending_exception(); | |
2373 assert(except_oop(), "No exception to process"); | |
2374 intptr_t continuation_bci; | |
2375 // expression stack is emptied | |
2376 topOfStack = istate->stack_base() - Interpreter::stackElementWords(); | |
2377 CALL_VM(continuation_bci = (intptr_t)InterpreterRuntime::exception_handler_for_exception(THREAD, except_oop()), | |
2378 handle_exception); | |
2379 | |
2380 except_oop = (oop) THREAD->vm_result(); | |
2381 THREAD->set_vm_result(NULL); | |
2382 if (continuation_bci >= 0) { | |
2383 // Place exception on top of stack | |
2384 SET_STACK_OBJECT(except_oop(), 0); | |
2385 MORE_STACK(1); | |
2386 pc = METHOD->code_base() + continuation_bci; | |
2387 if (TraceExceptions) { | |
2388 ttyLocker ttyl; | |
2389 ResourceMark rm; | |
2390 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
2391 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
2392 tty->print_cr(" at bci %d, continuing at %d for thread " INTPTR_FORMAT, | |
2393 pc - (intptr_t)METHOD->code_base(), | |
2394 continuation_bci, THREAD); | |
2395 } | |
2396 // for AbortVMOnException flag | |
2397 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
2398 goto run; | |
2399 } | |
2400 if (TraceExceptions) { | |
2401 ttyLocker ttyl; | |
2402 ResourceMark rm; | |
2403 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
2404 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
2405 tty->print_cr(" at bci %d, unwinding for thread " INTPTR_FORMAT, | |
2406 pc - (intptr_t) METHOD->code_base(), | |
2407 THREAD); | |
2408 } | |
2409 // for AbortVMOnException flag | |
2410 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
2411 // No handler in this activation, unwind and try again | |
2412 THREAD->set_pending_exception(except_oop(), NULL, 0); | |
2413 goto handle_return; | |
2414 } /* handle_exception: */ | |
2415 | |
2416 | |
2417 | |
2418 // Return from an interpreter invocation with the result of the interpretation | |
2419 // on the top of the Java Stack (or a pending exception) | |
2420 | |
2421 handle_Pop_Frame: | |
2422 | |
2423 // We don't really do anything special here except we must be aware | |
2424 // that we can get here without ever locking the method (if sync). | |
2425 // Also we skip the notification of the exit. | |
2426 | |
2427 istate->set_msg(popping_frame); | |
2428 // Clear pending so while the pop is in process | |
2429 // we don't start another one if a call_vm is done. | |
2430 THREAD->clr_pop_frame_pending(); | |
2431 // Let interpreter (only) see the we're in the process of popping a frame | |
2432 THREAD->set_pop_frame_in_process(); | |
2433 | |
2434 handle_return: | |
2435 { | |
2436 DECACHE_STATE(); | |
2437 | |
2438 bool suppress_error = istate->msg() == popping_frame; | |
2439 bool suppress_exit_event = THREAD->has_pending_exception() || suppress_error; | |
2440 Handle original_exception(THREAD, THREAD->pending_exception()); | |
2441 Handle illegal_state_oop(THREAD, NULL); | |
2442 | |
2443 // We'd like a HandleMark here to prevent any subsequent HandleMarkCleaner | |
2444 // in any following VM entries from freeing our live handles, but illegal_state_oop | |
2445 // isn't really allocated yet and so doesn't become live until later and | |
2446 // in unpredicatable places. Instead we must protect the places where we enter the | |
2447 // VM. It would be much simpler (and safer) if we could allocate a real handle with | |
2448 // a NULL oop in it and then overwrite the oop later as needed. This isn't | |
2449 // unfortunately isn't possible. | |
2450 | |
2451 THREAD->clear_pending_exception(); | |
2452 | |
2453 // | |
2454 // As far as we are concerned we have returned. If we have a pending exception | |
2455 // that will be returned as this invocation's result. However if we get any | |
2456 // exception(s) while checking monitor state one of those IllegalMonitorStateExceptions | |
2457 // will be our final result (i.e. monitor exception trumps a pending exception). | |
2458 // | |
2459 | |
2460 // If we never locked the method (or really passed the point where we would have), | |
2461 // there is no need to unlock it (or look for other monitors), since that | |
2462 // could not have happened. | |
2463 | |
2464 if (THREAD->do_not_unlock()) { | |
2465 | |
2466 // Never locked, reset the flag now because obviously any caller must | |
2467 // have passed their point of locking for us to have gotten here. | |
2468 | |
2469 THREAD->clr_do_not_unlock(); | |
2470 } else { | |
2471 // At this point we consider that we have returned. We now check that the | |
2472 // locks were properly block structured. If we find that they were not | |
2473 // used properly we will return with an illegal monitor exception. | |
2474 // The exception is checked by the caller not the callee since this | |
2475 // checking is considered to be part of the invocation and therefore | |
2476 // in the callers scope (JVM spec 8.13). | |
2477 // | |
2478 // Another weird thing to watch for is if the method was locked | |
2479 // recursively and then not exited properly. This means we must | |
2480 // examine all the entries in reverse time(and stack) order and | |
2481 // unlock as we find them. If we find the method monitor before | |
2482 // we are at the initial entry then we should throw an exception. | |
2483 // It is not clear the template based interpreter does this | |
2484 // correctly | |
2485 | |
2486 BasicObjectLock* base = istate->monitor_base(); | |
2487 BasicObjectLock* end = (BasicObjectLock*) istate->stack_base(); | |
2488 bool method_unlock_needed = METHOD->is_synchronized(); | |
2489 // We know the initial monitor was used for the method don't check that | |
2490 // slot in the loop | |
2491 if (method_unlock_needed) base--; | |
2492 | |
2493 // Check all the monitors to see they are unlocked. Install exception if found to be locked. | |
2494 while (end < base) { | |
2495 oop lockee = end->obj(); | |
2496 if (lockee != NULL) { | |
2497 BasicLock* lock = end->lock(); | |
2498 markOop header = lock->displaced_header(); | |
2499 end->set_obj(NULL); | |
2500 // If it isn't recursive we either must swap old header or call the runtime | |
2501 if (header != NULL) { | |
2502 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { | |
2503 // restore object for the slow case | |
2504 end->set_obj(lockee); | |
2505 { | |
2506 // Prevent any HandleMarkCleaner from freeing our live handles | |
2507 HandleMark __hm(THREAD); | |
2508 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, end)); | |
2509 } | |
2510 } | |
2511 } | |
2512 // One error is plenty | |
2513 if (illegal_state_oop() == NULL && !suppress_error) { | |
2514 { | |
2515 // Prevent any HandleMarkCleaner from freeing our live handles | |
2516 HandleMark __hm(THREAD); | |
2517 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
2518 } | |
2519 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
2520 illegal_state_oop = THREAD->pending_exception(); | |
2521 THREAD->clear_pending_exception(); | |
2522 } | |
2523 } | |
2524 end++; | |
2525 } | |
2526 // Unlock the method if needed | |
2527 if (method_unlock_needed) { | |
2528 if (base->obj() == NULL) { | |
2529 // The method is already unlocked this is not good. | |
2530 if (illegal_state_oop() == NULL && !suppress_error) { | |
2531 { | |
2532 // Prevent any HandleMarkCleaner from freeing our live handles | |
2533 HandleMark __hm(THREAD); | |
2534 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
2535 } | |
2536 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
2537 illegal_state_oop = THREAD->pending_exception(); | |
2538 THREAD->clear_pending_exception(); | |
2539 } | |
2540 } else { | |
2541 // | |
2542 // The initial monitor is always used for the method | |
2543 // However if that slot is no longer the oop for the method it was unlocked | |
2544 // and reused by something that wasn't unlocked! | |
2545 // | |
2546 // deopt can come in with rcvr dead because c2 knows | |
2547 // its value is preserved in the monitor. So we can't use locals[0] at all | |
2548 // and must use first monitor slot. | |
2549 // | |
2550 oop rcvr = base->obj(); | |
2551 if (rcvr == NULL) { | |
2552 if (!suppress_error) { | |
2553 VM_JAVA_ERROR_NO_JUMP(vmSymbols::java_lang_NullPointerException(), ""); | |
2554 illegal_state_oop = THREAD->pending_exception(); | |
2555 THREAD->clear_pending_exception(); | |
2556 } | |
2557 } else { | |
2558 BasicLock* lock = base->lock(); | |
2559 markOop header = lock->displaced_header(); | |
2560 base->set_obj(NULL); | |
2561 // If it isn't recursive we either must swap old header or call the runtime | |
2562 if (header != NULL) { | |
2563 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) { | |
2564 // restore object for the slow case | |
2565 base->set_obj(rcvr); | |
2566 { | |
2567 // Prevent any HandleMarkCleaner from freeing our live handles | |
2568 HandleMark __hm(THREAD); | |
2569 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base)); | |
2570 } | |
2571 if (THREAD->has_pending_exception()) { | |
2572 if (!suppress_error) illegal_state_oop = THREAD->pending_exception(); | |
2573 THREAD->clear_pending_exception(); | |
2574 } | |
2575 } | |
2576 } | |
2577 } | |
2578 } | |
2579 } | |
2580 } | |
2581 | |
2582 // | |
2583 // Notify jvmti/jvmdi | |
2584 // | |
2585 // NOTE: we do not notify a method_exit if we have a pending exception, | |
2586 // including an exception we generate for unlocking checks. In the former | |
2587 // case, JVMDI has already been notified by our call for the exception handler | |
2588 // and in both cases as far as JVMDI is concerned we have already returned. | |
2589 // If we notify it again JVMDI will be all confused about how many frames | |
2590 // are still on the stack (4340444). | |
2591 // | |
2592 // NOTE Further! It turns out the the JVMTI spec in fact expects to see | |
2593 // method_exit events whenever we leave an activation unless it was done | |
2594 // for popframe. This is nothing like jvmdi. However we are passing the | |
2595 // tests at the moment (apparently because they are jvmdi based) so rather | |
2596 // than change this code and possibly fail tests we will leave it alone | |
2597 // (with this note) in anticipation of changing the vm and the tests | |
2598 // simultaneously. | |
2599 | |
2600 | |
2601 // | |
2602 suppress_exit_event = suppress_exit_event || illegal_state_oop() != NULL; | |
2603 | |
2604 | |
2605 | |
2606 #ifdef VM_JVMTI | |
2607 if (_jvmti_interp_events) { | |
2608 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2609 // entry/exit events are sent for that thread to track stack depth. | |
2610 if ( !suppress_exit_event && THREAD->is_interp_only_mode() ) { | |
2611 { | |
2612 // Prevent any HandleMarkCleaner from freeing our live handles | |
2613 HandleMark __hm(THREAD); | |
2614 CALL_VM_NOCHECK(InterpreterRuntime::post_method_exit(THREAD)); | |
2615 } | |
2616 } | |
2617 } | |
2618 #endif /* VM_JVMTI */ | |
2619 | |
2620 // | |
2621 // See if we are returning any exception | |
2622 // A pending exception that was pending prior to a possible popping frame | |
2623 // overrides the popping frame. | |
2624 // | |
2625 assert(!suppress_error || suppress_error && illegal_state_oop() == NULL, "Error was not suppressed"); | |
2626 if (illegal_state_oop() != NULL || original_exception() != NULL) { | |
2627 // inform the frame manager we have no result | |
2628 istate->set_msg(throwing_exception); | |
2629 if (illegal_state_oop() != NULL) | |
2630 THREAD->set_pending_exception(illegal_state_oop(), NULL, 0); | |
2631 else | |
2632 THREAD->set_pending_exception(original_exception(), NULL, 0); | |
2633 istate->set_return_kind((Bytecodes::Code)opcode); | |
2634 UPDATE_PC_AND_RETURN(0); | |
2635 } | |
2636 | |
2637 if (istate->msg() == popping_frame) { | |
2638 // Make it simpler on the assembly code and set the message for the frame pop. | |
2639 // returns | |
2640 if (istate->prev() == NULL) { | |
2641 // We must be returning to a deoptimized frame (because popframe only happens between | |
2642 // two interpreted frames). We need to save the current arguments in C heap so that | |
2643 // the deoptimized frame when it restarts can copy the arguments to its expression | |
2644 // stack and re-execute the call. We also have to notify deoptimization that this | |
605 | 2645 // has occurred and to pick the preserved args copy them to the deoptimized frame's |
0 | 2646 // java expression stack. Yuck. |
2647 // | |
2648 THREAD->popframe_preserve_args(in_ByteSize(METHOD->size_of_parameters() * wordSize), | |
2649 LOCALS_SLOT(METHOD->size_of_parameters() - 1)); | |
2650 THREAD->set_popframe_condition_bit(JavaThread::popframe_force_deopt_reexecution_bit); | |
2651 } | |
2652 UPDATE_PC_AND_RETURN(1); | |
2653 } else { | |
2654 // Normal return | |
2655 // Advance the pc and return to frame manager | |
2656 istate->set_msg(return_from_method); | |
2657 istate->set_return_kind((Bytecodes::Code)opcode); | |
2658 UPDATE_PC_AND_RETURN(1); | |
2659 } | |
2660 } /* handle_return: */ | |
2661 | |
2662 // This is really a fatal error return | |
2663 | |
2664 finish: | |
2665 DECACHE_TOS(); | |
2666 DECACHE_PC(); | |
2667 | |
2668 return; | |
2669 } | |
2670 | |
2671 /* | |
2672 * All the code following this point is only produced once and is not present | |
2673 * in the JVMTI version of the interpreter | |
2674 */ | |
2675 | |
2676 #ifndef VM_JVMTI | |
2677 | |
2678 // This constructor should only be used to contruct the object to signal | |
2679 // interpreter initialization. All other instances should be created by | |
2680 // the frame manager. | |
2681 BytecodeInterpreter::BytecodeInterpreter(messages msg) { | |
2682 if (msg != initialize) ShouldNotReachHere(); | |
2683 _msg = msg; | |
2684 _self_link = this; | |
2685 _prev_link = NULL; | |
2686 } | |
2687 | |
2688 // Inline static functions for Java Stack and Local manipulation | |
2689 | |
2690 // The implementations are platform dependent. We have to worry about alignment | |
2691 // issues on some machines which can change on the same platform depending on | |
2692 // whether it is an LP64 machine also. | |
2693 #ifdef ASSERT | |
2694 void BytecodeInterpreter::verify_stack_tag(intptr_t *tos, frame::Tag tag, int offset) { | |
2695 if (TaggedStackInterpreter) { | |
2696 frame::Tag t = (frame::Tag)tos[Interpreter::expr_tag_index_at(-offset)]; | |
2697 assert(t == tag, "stack tag mismatch"); | |
2698 } | |
2699 } | |
2700 #endif // ASSERT | |
2701 | |
2702 address BytecodeInterpreter::stack_slot(intptr_t *tos, int offset) { | |
2703 debug_only(verify_stack_tag(tos, frame::TagValue, offset)); | |
2704 return (address) tos[Interpreter::expr_index_at(-offset)]; | |
2705 } | |
2706 | |
2707 jint BytecodeInterpreter::stack_int(intptr_t *tos, int offset) { | |
2708 debug_only(verify_stack_tag(tos, frame::TagValue, offset)); | |
2709 return *((jint*) &tos[Interpreter::expr_index_at(-offset)]); | |
2710 } | |
2711 | |
2712 jfloat BytecodeInterpreter::stack_float(intptr_t *tos, int offset) { | |
2713 debug_only(verify_stack_tag(tos, frame::TagValue, offset)); | |
2714 return *((jfloat *) &tos[Interpreter::expr_index_at(-offset)]); | |
2715 } | |
2716 | |
2717 oop BytecodeInterpreter::stack_object(intptr_t *tos, int offset) { | |
2718 debug_only(verify_stack_tag(tos, frame::TagReference, offset)); | |
2719 return (oop)tos [Interpreter::expr_index_at(-offset)]; | |
2720 } | |
2721 | |
2722 jdouble BytecodeInterpreter::stack_double(intptr_t *tos, int offset) { | |
2723 debug_only(verify_stack_tag(tos, frame::TagValue, offset)); | |
2724 debug_only(verify_stack_tag(tos, frame::TagValue, offset-1)); | |
2725 return ((VMJavaVal64*) &tos[Interpreter::expr_index_at(-offset)])->d; | |
2726 } | |
2727 | |
2728 jlong BytecodeInterpreter::stack_long(intptr_t *tos, int offset) { | |
2729 debug_only(verify_stack_tag(tos, frame::TagValue, offset)); | |
2730 debug_only(verify_stack_tag(tos, frame::TagValue, offset-1)); | |
2731 return ((VMJavaVal64 *) &tos[Interpreter::expr_index_at(-offset)])->l; | |
2732 } | |
2733 | |
2734 void BytecodeInterpreter::tag_stack(intptr_t *tos, frame::Tag tag, int offset) { | |
2735 if (TaggedStackInterpreter) | |
2736 tos[Interpreter::expr_tag_index_at(-offset)] = (intptr_t)tag; | |
2737 } | |
2738 | |
2739 // only used for value types | |
2740 void BytecodeInterpreter::set_stack_slot(intptr_t *tos, address value, | |
2741 int offset) { | |
2742 tag_stack(tos, frame::TagValue, offset); | |
2743 *((address *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2744 } | |
2745 | |
2746 void BytecodeInterpreter::set_stack_int(intptr_t *tos, int value, | |
2747 int offset) { | |
2748 tag_stack(tos, frame::TagValue, offset); | |
2749 *((jint *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2750 } | |
2751 | |
2752 void BytecodeInterpreter::set_stack_float(intptr_t *tos, jfloat value, | |
2753 int offset) { | |
2754 tag_stack(tos, frame::TagValue, offset); | |
2755 *((jfloat *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2756 } | |
2757 | |
2758 void BytecodeInterpreter::set_stack_object(intptr_t *tos, oop value, | |
2759 int offset) { | |
2760 tag_stack(tos, frame::TagReference, offset); | |
2761 *((oop *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
2762 } | |
2763 | |
2764 // needs to be platform dep for the 32 bit platforms. | |
2765 void BytecodeInterpreter::set_stack_double(intptr_t *tos, jdouble value, | |
2766 int offset) { | |
2767 tag_stack(tos, frame::TagValue, offset); | |
2768 tag_stack(tos, frame::TagValue, offset-1); | |
2769 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = value; | |
2770 } | |
2771 | |
2772 void BytecodeInterpreter::set_stack_double_from_addr(intptr_t *tos, | |
2773 address addr, int offset) { | |
2774 tag_stack(tos, frame::TagValue, offset); | |
2775 tag_stack(tos, frame::TagValue, offset-1); | |
2776 (((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = | |
2777 ((VMJavaVal64*)addr)->d); | |
2778 } | |
2779 | |
2780 void BytecodeInterpreter::set_stack_long(intptr_t *tos, jlong value, | |
2781 int offset) { | |
2782 tag_stack(tos, frame::TagValue, offset); | |
2783 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
2784 tag_stack(tos, frame::TagValue, offset-1); | |
2785 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = value; | |
2786 } | |
2787 | |
2788 void BytecodeInterpreter::set_stack_long_from_addr(intptr_t *tos, | |
2789 address addr, int offset) { | |
2790 tag_stack(tos, frame::TagValue, offset); | |
2791 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
2792 tag_stack(tos, frame::TagValue, offset-1); | |
2793 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = | |
2794 ((VMJavaVal64*)addr)->l; | |
2795 } | |
2796 | |
2797 // Locals | |
2798 | |
2799 #ifdef ASSERT | |
2800 void BytecodeInterpreter::verify_locals_tag(intptr_t *locals, frame::Tag tag, | |
2801 int offset) { | |
2802 if (TaggedStackInterpreter) { | |
2803 frame::Tag t = (frame::Tag)locals[Interpreter::local_tag_index_at(-offset)]; | |
2804 assert(t == tag, "locals tag mismatch"); | |
2805 } | |
2806 } | |
2807 #endif // ASSERT | |
2808 address BytecodeInterpreter::locals_slot(intptr_t* locals, int offset) { | |
2809 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2810 return (address)locals[Interpreter::local_index_at(-offset)]; | |
2811 } | |
2812 jint BytecodeInterpreter::locals_int(intptr_t* locals, int offset) { | |
2813 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2814 return (jint)locals[Interpreter::local_index_at(-offset)]; | |
2815 } | |
2816 jfloat BytecodeInterpreter::locals_float(intptr_t* locals, int offset) { | |
2817 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2818 return (jfloat)locals[Interpreter::local_index_at(-offset)]; | |
2819 } | |
2820 oop BytecodeInterpreter::locals_object(intptr_t* locals, int offset) { | |
2821 debug_only(verify_locals_tag(locals, frame::TagReference, offset)); | |
2822 return (oop)locals[Interpreter::local_index_at(-offset)]; | |
2823 } | |
2824 jdouble BytecodeInterpreter::locals_double(intptr_t* locals, int offset) { | |
2825 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2826 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2827 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d; | |
2828 } | |
2829 jlong BytecodeInterpreter::locals_long(intptr_t* locals, int offset) { | |
2830 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2831 debug_only(verify_locals_tag(locals, frame::TagValue, offset+1)); | |
2832 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l; | |
2833 } | |
2834 | |
2835 // Returns the address of locals value. | |
2836 address BytecodeInterpreter::locals_long_at(intptr_t* locals, int offset) { | |
2837 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2838 debug_only(verify_locals_tag(locals, frame::TagValue, offset+1)); | |
2839 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
2840 } | |
2841 address BytecodeInterpreter::locals_double_at(intptr_t* locals, int offset) { | |
2842 debug_only(verify_locals_tag(locals, frame::TagValue, offset)); | |
2843 debug_only(verify_locals_tag(locals, frame::TagValue, offset+1)); | |
2844 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
2845 } | |
2846 | |
2847 void BytecodeInterpreter::tag_locals(intptr_t *locals, frame::Tag tag, int offset) { | |
2848 if (TaggedStackInterpreter) | |
2849 locals[Interpreter::local_tag_index_at(-offset)] = (intptr_t)tag; | |
2850 } | |
2851 | |
2852 // Used for local value or returnAddress | |
2853 void BytecodeInterpreter::set_locals_slot(intptr_t *locals, | |
2854 address value, int offset) { | |
2855 tag_locals(locals, frame::TagValue, offset); | |
2856 *((address*)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2857 } | |
2858 void BytecodeInterpreter::set_locals_int(intptr_t *locals, | |
2859 jint value, int offset) { | |
2860 tag_locals(locals, frame::TagValue, offset); | |
2861 *((jint *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2862 } | |
2863 void BytecodeInterpreter::set_locals_float(intptr_t *locals, | |
2864 jfloat value, int offset) { | |
2865 tag_locals(locals, frame::TagValue, offset); | |
2866 *((jfloat *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2867 } | |
2868 void BytecodeInterpreter::set_locals_object(intptr_t *locals, | |
2869 oop value, int offset) { | |
2870 tag_locals(locals, frame::TagReference, offset); | |
2871 *((oop *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
2872 } | |
2873 void BytecodeInterpreter::set_locals_double(intptr_t *locals, | |
2874 jdouble value, int offset) { | |
2875 tag_locals(locals, frame::TagValue, offset); | |
2876 tag_locals(locals, frame::TagValue, offset+1); | |
2877 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = value; | |
2878 } | |
2879 void BytecodeInterpreter::set_locals_long(intptr_t *locals, | |
2880 jlong value, int offset) { | |
2881 tag_locals(locals, frame::TagValue, offset); | |
2882 tag_locals(locals, frame::TagValue, offset+1); | |
2883 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = value; | |
2884 } | |
2885 void BytecodeInterpreter::set_locals_double_from_addr(intptr_t *locals, | |
2886 address addr, int offset) { | |
2887 tag_locals(locals, frame::TagValue, offset); | |
2888 tag_locals(locals, frame::TagValue, offset+1); | |
2889 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = ((VMJavaVal64*)addr)->d; | |
2890 } | |
2891 void BytecodeInterpreter::set_locals_long_from_addr(intptr_t *locals, | |
2892 address addr, int offset) { | |
2893 tag_locals(locals, frame::TagValue, offset); | |
2894 tag_locals(locals, frame::TagValue, offset+1); | |
2895 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = ((VMJavaVal64*)addr)->l; | |
2896 } | |
2897 | |
2898 void BytecodeInterpreter::astore(intptr_t* tos, int stack_offset, | |
2899 intptr_t* locals, int locals_offset) { | |
2900 // Copy tag from stack to locals. astore's operand can be returnAddress | |
2901 // and may not be TagReference | |
2902 if (TaggedStackInterpreter) { | |
2903 frame::Tag t = (frame::Tag) tos[Interpreter::expr_tag_index_at(-stack_offset)]; | |
2904 locals[Interpreter::local_tag_index_at(-locals_offset)] = (intptr_t)t; | |
2905 } | |
2906 intptr_t value = tos[Interpreter::expr_index_at(-stack_offset)]; | |
2907 locals[Interpreter::local_index_at(-locals_offset)] = value; | |
2908 } | |
2909 | |
2910 | |
2911 void BytecodeInterpreter::copy_stack_slot(intptr_t *tos, int from_offset, | |
2912 int to_offset) { | |
2913 if (TaggedStackInterpreter) { | |
2914 tos[Interpreter::expr_tag_index_at(-to_offset)] = | |
2915 (intptr_t)tos[Interpreter::expr_tag_index_at(-from_offset)]; | |
2916 } | |
2917 tos[Interpreter::expr_index_at(-to_offset)] = | |
2918 (intptr_t)tos[Interpreter::expr_index_at(-from_offset)]; | |
2919 } | |
2920 | |
2921 void BytecodeInterpreter::dup(intptr_t *tos) { | |
2922 copy_stack_slot(tos, -1, 0); | |
2923 } | |
2924 void BytecodeInterpreter::dup2(intptr_t *tos) { | |
2925 copy_stack_slot(tos, -2, 0); | |
2926 copy_stack_slot(tos, -1, 1); | |
2927 } | |
2928 | |
2929 void BytecodeInterpreter::dup_x1(intptr_t *tos) { | |
2930 /* insert top word two down */ | |
2931 copy_stack_slot(tos, -1, 0); | |
2932 copy_stack_slot(tos, -2, -1); | |
2933 copy_stack_slot(tos, 0, -2); | |
2934 } | |
2935 | |
2936 void BytecodeInterpreter::dup_x2(intptr_t *tos) { | |
2937 /* insert top word three down */ | |
2938 copy_stack_slot(tos, -1, 0); | |
2939 copy_stack_slot(tos, -2, -1); | |
2940 copy_stack_slot(tos, -3, -2); | |
2941 copy_stack_slot(tos, 0, -3); | |
2942 } | |
2943 void BytecodeInterpreter::dup2_x1(intptr_t *tos) { | |
2944 /* insert top 2 slots three down */ | |
2945 copy_stack_slot(tos, -1, 1); | |
2946 copy_stack_slot(tos, -2, 0); | |
2947 copy_stack_slot(tos, -3, -1); | |
2948 copy_stack_slot(tos, 1, -2); | |
2949 copy_stack_slot(tos, 0, -3); | |
2950 } | |
2951 void BytecodeInterpreter::dup2_x2(intptr_t *tos) { | |
2952 /* insert top 2 slots four down */ | |
2953 copy_stack_slot(tos, -1, 1); | |
2954 copy_stack_slot(tos, -2, 0); | |
2955 copy_stack_slot(tos, -3, -1); | |
2956 copy_stack_slot(tos, -4, -2); | |
2957 copy_stack_slot(tos, 1, -3); | |
2958 copy_stack_slot(tos, 0, -4); | |
2959 } | |
2960 | |
2961 | |
2962 void BytecodeInterpreter::swap(intptr_t *tos) { | |
2963 // swap top two elements | |
2964 intptr_t val = tos[Interpreter::expr_index_at(1)]; | |
2965 frame::Tag t; | |
2966 if (TaggedStackInterpreter) { | |
2967 t = (frame::Tag) tos[Interpreter::expr_tag_index_at(1)]; | |
2968 } | |
2969 // Copy -2 entry to -1 | |
2970 copy_stack_slot(tos, -2, -1); | |
2971 // Store saved -1 entry into -2 | |
2972 if (TaggedStackInterpreter) { | |
2973 tos[Interpreter::expr_tag_index_at(2)] = (intptr_t)t; | |
2974 } | |
2975 tos[Interpreter::expr_index_at(2)] = val; | |
2976 } | |
2977 // -------------------------------------------------------------------------------- | |
2978 // Non-product code | |
2979 #ifndef PRODUCT | |
2980 | |
2981 const char* BytecodeInterpreter::C_msg(BytecodeInterpreter::messages msg) { | |
2982 switch (msg) { | |
2983 case BytecodeInterpreter::no_request: return("no_request"); | |
2984 case BytecodeInterpreter::initialize: return("initialize"); | |
2985 // status message to C++ interpreter | |
2986 case BytecodeInterpreter::method_entry: return("method_entry"); | |
2987 case BytecodeInterpreter::method_resume: return("method_resume"); | |
2988 case BytecodeInterpreter::got_monitors: return("got_monitors"); | |
2989 case BytecodeInterpreter::rethrow_exception: return("rethrow_exception"); | |
2990 // requests to frame manager from C++ interpreter | |
2991 case BytecodeInterpreter::call_method: return("call_method"); | |
2992 case BytecodeInterpreter::return_from_method: return("return_from_method"); | |
2993 case BytecodeInterpreter::more_monitors: return("more_monitors"); | |
2994 case BytecodeInterpreter::throwing_exception: return("throwing_exception"); | |
2995 case BytecodeInterpreter::popping_frame: return("popping_frame"); | |
2996 case BytecodeInterpreter::do_osr: return("do_osr"); | |
2997 // deopt | |
2998 case BytecodeInterpreter::deopt_resume: return("deopt_resume"); | |
2999 case BytecodeInterpreter::deopt_resume2: return("deopt_resume2"); | |
3000 default: return("BAD MSG"); | |
3001 } | |
3002 } | |
3003 void | |
3004 BytecodeInterpreter::print() { | |
3005 tty->print_cr("thread: " INTPTR_FORMAT, (uintptr_t) this->_thread); | |
3006 tty->print_cr("bcp: " INTPTR_FORMAT, (uintptr_t) this->_bcp); | |
3007 tty->print_cr("locals: " INTPTR_FORMAT, (uintptr_t) this->_locals); | |
3008 tty->print_cr("constants: " INTPTR_FORMAT, (uintptr_t) this->_constants); | |
3009 { | |
3010 ResourceMark rm; | |
3011 char *method_name = _method->name_and_sig_as_C_string(); | |
3012 tty->print_cr("method: " INTPTR_FORMAT "[ %s ]", (uintptr_t) this->_method, method_name); | |
3013 } | |
3014 tty->print_cr("mdx: " INTPTR_FORMAT, (uintptr_t) this->_mdx); | |
3015 tty->print_cr("stack: " INTPTR_FORMAT, (uintptr_t) this->_stack); | |
3016 tty->print_cr("msg: %s", C_msg(this->_msg)); | |
3017 tty->print_cr("result_to_call._callee: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee); | |
3018 tty->print_cr("result_to_call._callee_entry_point: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee_entry_point); | |
3019 tty->print_cr("result_to_call._bcp_advance: %d ", this->_result._to_call._bcp_advance); | |
3020 tty->print_cr("osr._osr_buf: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_buf); | |
3021 tty->print_cr("osr._osr_entry: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_entry); | |
3022 tty->print_cr("result_return_kind 0x%x ", (int) this->_result._return_kind); | |
3023 tty->print_cr("prev_link: " INTPTR_FORMAT, (uintptr_t) this->_prev_link); | |
3024 tty->print_cr("native_mirror: " INTPTR_FORMAT, (uintptr_t) this->_oop_temp); | |
3025 tty->print_cr("stack_base: " INTPTR_FORMAT, (uintptr_t) this->_stack_base); | |
3026 tty->print_cr("stack_limit: " INTPTR_FORMAT, (uintptr_t) this->_stack_limit); | |
3027 tty->print_cr("monitor_base: " INTPTR_FORMAT, (uintptr_t) this->_monitor_base); | |
3028 #ifdef SPARC | |
3029 tty->print_cr("last_Java_pc: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_pc); | |
3030 tty->print_cr("frame_bottom: " INTPTR_FORMAT, (uintptr_t) this->_frame_bottom); | |
3031 tty->print_cr("&native_fresult: " INTPTR_FORMAT, (uintptr_t) &this->_native_fresult); | |
3032 tty->print_cr("native_lresult: " INTPTR_FORMAT, (uintptr_t) this->_native_lresult); | |
3033 #endif | |
3034 #ifdef IA64 | |
3035 tty->print_cr("last_Java_fp: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_fp); | |
3036 #endif // IA64 | |
3037 tty->print_cr("self_link: " INTPTR_FORMAT, (uintptr_t) this->_self_link); | |
3038 } | |
3039 | |
3040 extern "C" { | |
3041 void PI(uintptr_t arg) { | |
3042 ((BytecodeInterpreter*)arg)->print(); | |
3043 } | |
3044 } | |
3045 #endif // PRODUCT | |
3046 | |
3047 #endif // JVMTI | |
3048 #endif // CC_INTERP |