Mercurial > hg > truffle
annotate src/cpu/zero/vm/cppInterpreter_zero.cpp @ 3244:a534c140904e
Merge
author | vladidan |
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date | Thu, 14 Apr 2011 23:06:33 -0400 |
parents | c7f3d0b4570f |
children | 4b95bbb36464 e1162778c1c8 |
rev | line source |
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1010 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
1256 | 3 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc. |
1010 | 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
1010 | 23 * |
24 */ | |
25 | |
1972 | 26 #include "precompiled.hpp" |
27 #include "asm/assembler.hpp" | |
28 #include "interpreter/bytecodeHistogram.hpp" | |
29 #include "interpreter/cppInterpreter.hpp" | |
30 #include "interpreter/interpreter.hpp" | |
31 #include "interpreter/interpreterGenerator.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "oops/arrayOop.hpp" | |
34 #include "oops/methodDataOop.hpp" | |
35 #include "oops/methodOop.hpp" | |
36 #include "oops/oop.inline.hpp" | |
37 #include "prims/jvmtiExport.hpp" | |
38 #include "prims/jvmtiThreadState.hpp" | |
39 #include "runtime/arguments.hpp" | |
40 #include "runtime/deoptimization.hpp" | |
41 #include "runtime/frame.inline.hpp" | |
42 #include "runtime/interfaceSupport.hpp" | |
43 #include "runtime/sharedRuntime.hpp" | |
44 #include "runtime/stubRoutines.hpp" | |
45 #include "runtime/synchronizer.hpp" | |
46 #include "runtime/timer.hpp" | |
47 #include "runtime/vframeArray.hpp" | |
48 #include "stack_zero.inline.hpp" | |
49 #include "utilities/debug.hpp" | |
50 #ifdef SHARK | |
51 #include "shark/shark_globals.hpp" | |
52 #endif | |
1010 | 53 |
54 #ifdef CC_INTERP | |
55 | |
56 #define fixup_after_potential_safepoint() \ | |
57 method = istate->method() | |
58 | |
59 #define CALL_VM_NOCHECK(func) \ | |
60 thread->set_last_Java_frame(); \ | |
61 func; \ | |
62 thread->reset_last_Java_frame(); \ | |
63 fixup_after_potential_safepoint() | |
64 | |
1514 | 65 int CppInterpreter::normal_entry(methodOop method, intptr_t UNUSED, TRAPS) { |
1010 | 66 JavaThread *thread = (JavaThread *) THREAD; |
67 | |
68 // Allocate and initialize our frame. | |
1514 | 69 InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0); |
1010 | 70 thread->push_zero_frame(frame); |
71 | |
72 // Execute those bytecodes! | |
73 main_loop(0, THREAD); | |
1514 | 74 |
75 // No deoptimized frames on the stack | |
76 return 0; | |
1010 | 77 } |
78 | |
79 void CppInterpreter::main_loop(int recurse, TRAPS) { | |
80 JavaThread *thread = (JavaThread *) THREAD; | |
81 ZeroStack *stack = thread->zero_stack(); | |
82 | |
83 // If we are entering from a deopt we may need to call | |
84 // ourself a few times in order to get to our frame. | |
85 if (recurse) | |
86 main_loop(recurse - 1, THREAD); | |
87 | |
88 InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); | |
89 interpreterState istate = frame->interpreter_state(); | |
90 methodOop method = istate->method(); | |
91 | |
92 intptr_t *result = NULL; | |
93 int result_slots = 0; | |
94 | |
95 while (true) { | |
96 // We can set up the frame anchor with everything we want at | |
97 // this point as we are thread_in_Java and no safepoints can | |
98 // occur until we go to vm mode. We do have to clear flags | |
99 // on return from vm but that is it. | |
100 thread->set_last_Java_frame(); | |
101 | |
102 // Call the interpreter | |
103 if (JvmtiExport::can_post_interpreter_events()) | |
104 BytecodeInterpreter::runWithChecks(istate); | |
105 else | |
106 BytecodeInterpreter::run(istate); | |
107 fixup_after_potential_safepoint(); | |
108 | |
109 // Clear the frame anchor | |
110 thread->reset_last_Java_frame(); | |
111 | |
112 // Examine the message from the interpreter to decide what to do | |
113 if (istate->msg() == BytecodeInterpreter::call_method) { | |
114 methodOop callee = istate->callee(); | |
115 | |
116 // Trim back the stack to put the parameters at the top | |
117 stack->set_sp(istate->stack() + 1); | |
118 | |
119 // Make the call | |
120 Interpreter::invoke_method(callee, istate->callee_entry_point(), THREAD); | |
121 fixup_after_potential_safepoint(); | |
122 | |
123 // Convert the result | |
124 istate->set_stack(stack->sp() - 1); | |
125 | |
126 // Restore the stack | |
127 stack->set_sp(istate->stack_limit() + 1); | |
128 | |
129 // Resume the interpreter | |
130 istate->set_msg(BytecodeInterpreter::method_resume); | |
131 } | |
132 else if (istate->msg() == BytecodeInterpreter::more_monitors) { | |
133 int monitor_words = frame::interpreter_frame_monitor_size(); | |
134 | |
135 // Allocate the space | |
1379 | 136 stack->overflow_check(monitor_words, THREAD); |
137 if (HAS_PENDING_EXCEPTION) | |
138 break; | |
1010 | 139 stack->alloc(monitor_words * wordSize); |
140 | |
141 // Move the expression stack contents | |
142 for (intptr_t *p = istate->stack() + 1; p < istate->stack_base(); p++) | |
143 *(p - monitor_words) = *p; | |
144 | |
145 // Move the expression stack pointers | |
146 istate->set_stack_limit(istate->stack_limit() - monitor_words); | |
147 istate->set_stack(istate->stack() - monitor_words); | |
148 istate->set_stack_base(istate->stack_base() - monitor_words); | |
149 | |
150 // Zero the new monitor so the interpreter can find it. | |
151 ((BasicObjectLock *) istate->stack_base())->set_obj(NULL); | |
152 | |
153 // Resume the interpreter | |
154 istate->set_msg(BytecodeInterpreter::got_monitors); | |
155 } | |
156 else if (istate->msg() == BytecodeInterpreter::return_from_method) { | |
157 // Copy the result into the caller's frame | |
1256 | 158 result_slots = type2size[result_type_of(method)]; |
1010 | 159 assert(result_slots >= 0 && result_slots <= 2, "what?"); |
160 result = istate->stack() + result_slots; | |
161 break; | |
162 } | |
163 else if (istate->msg() == BytecodeInterpreter::throwing_exception) { | |
164 assert(HAS_PENDING_EXCEPTION, "should do"); | |
165 break; | |
166 } | |
167 else if (istate->msg() == BytecodeInterpreter::do_osr) { | |
168 // Unwind the current frame | |
169 thread->pop_zero_frame(); | |
170 | |
171 // Remove any extension of the previous frame | |
172 int extra_locals = method->max_locals() - method->size_of_parameters(); | |
173 stack->set_sp(stack->sp() + extra_locals); | |
174 | |
175 // Jump into the OSR method | |
176 Interpreter::invoke_osr( | |
177 method, istate->osr_entry(), istate->osr_buf(), THREAD); | |
178 return; | |
179 } | |
180 else { | |
181 ShouldNotReachHere(); | |
182 } | |
183 } | |
184 | |
185 // Unwind the current frame | |
186 thread->pop_zero_frame(); | |
187 | |
188 // Pop our local variables | |
189 stack->set_sp(stack->sp() + method->max_locals()); | |
190 | |
191 // Push our result | |
192 for (int i = 0; i < result_slots; i++) | |
193 stack->push(result[-i]); | |
194 } | |
195 | |
1514 | 196 int CppInterpreter::native_entry(methodOop method, intptr_t UNUSED, TRAPS) { |
1010 | 197 // Make sure method is native and not abstract |
198 assert(method->is_native() && !method->is_abstract(), "should be"); | |
199 | |
200 JavaThread *thread = (JavaThread *) THREAD; | |
201 ZeroStack *stack = thread->zero_stack(); | |
202 | |
203 // Allocate and initialize our frame | |
1514 | 204 InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0); |
1010 | 205 thread->push_zero_frame(frame); |
206 interpreterState istate = frame->interpreter_state(); | |
207 intptr_t *locals = istate->locals(); | |
208 | |
1078 | 209 // Update the invocation counter |
210 if ((UseCompiler || CountCompiledCalls) && !method->is_synchronized()) { | |
211 InvocationCounter *counter = method->invocation_counter(); | |
212 counter->increment(); | |
213 if (counter->reached_InvocationLimit()) { | |
214 CALL_VM_NOCHECK( | |
215 InterpreterRuntime::frequency_counter_overflow(thread, NULL)); | |
216 if (HAS_PENDING_EXCEPTION) | |
217 goto unwind_and_return; | |
218 } | |
219 } | |
220 | |
1010 | 221 // Lock if necessary |
222 BasicObjectLock *monitor; | |
223 monitor = NULL; | |
224 if (method->is_synchronized()) { | |
225 monitor = (BasicObjectLock*) istate->stack_base(); | |
226 oop lockee = monitor->obj(); | |
227 markOop disp = lockee->mark()->set_unlocked(); | |
228 | |
229 monitor->lock()->set_displaced_header(disp); | |
230 if (Atomic::cmpxchg_ptr(monitor, lockee->mark_addr(), disp) != disp) { | |
231 if (thread->is_lock_owned((address) disp->clear_lock_bits())) { | |
232 monitor->lock()->set_displaced_header(NULL); | |
233 } | |
234 else { | |
235 CALL_VM_NOCHECK(InterpreterRuntime::monitorenter(thread, monitor)); | |
236 if (HAS_PENDING_EXCEPTION) | |
237 goto unwind_and_return; | |
238 } | |
239 } | |
240 } | |
241 | |
242 // Get the signature handler | |
243 InterpreterRuntime::SignatureHandler *handler; { | |
244 address handlerAddr = method->signature_handler(); | |
245 if (handlerAddr == NULL) { | |
246 CALL_VM_NOCHECK(InterpreterRuntime::prepare_native_call(thread, method)); | |
247 if (HAS_PENDING_EXCEPTION) | |
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248 goto unlock_unwind_and_return; |
1010 | 249 |
250 handlerAddr = method->signature_handler(); | |
251 assert(handlerAddr != NULL, "eh?"); | |
252 } | |
253 if (handlerAddr == (address) InterpreterRuntime::slow_signature_handler) { | |
254 CALL_VM_NOCHECK(handlerAddr = | |
255 InterpreterRuntime::slow_signature_handler(thread, method, NULL,NULL)); | |
256 if (HAS_PENDING_EXCEPTION) | |
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257 goto unlock_unwind_and_return; |
1010 | 258 } |
259 handler = \ | |
260 InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr); | |
261 } | |
262 | |
263 // Get the native function entry point | |
264 address function; | |
265 function = method->native_function(); | |
266 assert(function != NULL, "should be set if signature handler is"); | |
267 | |
268 // Build the argument list | |
1379 | 269 stack->overflow_check(handler->argument_count() * 2, THREAD); |
270 if (HAS_PENDING_EXCEPTION) | |
271 goto unlock_unwind_and_return; | |
272 | |
1010 | 273 void **arguments; |
274 void *mirror; { | |
275 arguments = | |
276 (void **) stack->alloc(handler->argument_count() * sizeof(void **)); | |
277 void **dst = arguments; | |
278 | |
279 void *env = thread->jni_environment(); | |
280 *(dst++) = &env; | |
281 | |
282 if (method->is_static()) { | |
283 istate->set_oop_temp( | |
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284 method->constants()->pool_holder()->java_mirror()); |
1010 | 285 mirror = istate->oop_temp_addr(); |
286 *(dst++) = &mirror; | |
287 } | |
288 | |
289 intptr_t *src = locals; | |
290 for (int i = dst - arguments; i < handler->argument_count(); i++) { | |
291 ffi_type *type = handler->argument_type(i); | |
292 if (type == &ffi_type_pointer) { | |
293 if (*src) { | |
294 stack->push((intptr_t) src); | |
295 *(dst++) = stack->sp(); | |
296 } | |
297 else { | |
298 *(dst++) = src; | |
299 } | |
300 src--; | |
301 } | |
302 else if (type->size == 4) { | |
303 *(dst++) = src--; | |
304 } | |
305 else if (type->size == 8) { | |
306 src--; | |
307 *(dst++) = src--; | |
308 } | |
309 else { | |
310 ShouldNotReachHere(); | |
311 } | |
312 } | |
313 } | |
314 | |
315 // Set up the Java frame anchor | |
316 thread->set_last_Java_frame(); | |
317 | |
318 // Change the thread state to _thread_in_native | |
319 ThreadStateTransition::transition_from_java(thread, _thread_in_native); | |
320 | |
321 // Make the call | |
322 intptr_t result[4 - LogBytesPerWord]; | |
323 ffi_call(handler->cif(), (void (*)()) function, result, arguments); | |
324 | |
325 // Change the thread state back to _thread_in_Java. | |
326 // ThreadStateTransition::transition_from_native() cannot be used | |
327 // here because it does not check for asynchronous exceptions. | |
328 // We have to manage the transition ourself. | |
329 thread->set_thread_state(_thread_in_native_trans); | |
330 | |
331 // Make sure new state is visible in the GC thread | |
332 if (os::is_MP()) { | |
333 if (UseMembar) { | |
334 OrderAccess::fence(); | |
335 } | |
336 else { | |
337 InterfaceSupport::serialize_memory(thread); | |
338 } | |
339 } | |
340 | |
341 // Handle safepoint operations, pending suspend requests, | |
342 // and pending asynchronous exceptions. | |
343 if (SafepointSynchronize::do_call_back() || | |
344 thread->has_special_condition_for_native_trans()) { | |
345 JavaThread::check_special_condition_for_native_trans(thread); | |
346 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops()); | |
347 } | |
348 | |
349 // Finally we can change the thread state to _thread_in_Java. | |
350 thread->set_thread_state(_thread_in_Java); | |
351 fixup_after_potential_safepoint(); | |
352 | |
353 // Clear the frame anchor | |
354 thread->reset_last_Java_frame(); | |
355 | |
356 // If the result was an oop then unbox it and store it in | |
357 // oop_temp where the garbage collector can see it before | |
358 // we release the handle it might be protected by. | |
359 if (handler->result_type() == &ffi_type_pointer) { | |
360 if (result[0]) | |
361 istate->set_oop_temp(*(oop *) result[0]); | |
362 else | |
363 istate->set_oop_temp(NULL); | |
364 } | |
365 | |
366 // Reset handle block | |
367 thread->active_handles()->clear(); | |
368 | |
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369 unlock_unwind_and_return: |
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370 |
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371 // Unlock if necessary |
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372 if (monitor) { |
1010 | 373 BasicLock *lock = monitor->lock(); |
374 markOop header = lock->displaced_header(); | |
375 oop rcvr = monitor->obj(); | |
376 monitor->set_obj(NULL); | |
377 | |
378 if (header != NULL) { | |
379 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) { | |
380 monitor->set_obj(rcvr); { | |
381 HandleMark hm(thread); | |
382 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(thread, monitor)); | |
383 } | |
384 } | |
385 } | |
386 } | |
387 | |
388 unwind_and_return: | |
389 | |
390 // Unwind the current activation | |
391 thread->pop_zero_frame(); | |
392 | |
393 // Pop our parameters | |
394 stack->set_sp(stack->sp() + method->size_of_parameters()); | |
395 | |
396 // Push our result | |
397 if (!HAS_PENDING_EXCEPTION) { | |
1256 | 398 BasicType type = result_type_of(method); |
399 stack->set_sp(stack->sp() - type2size[type]); | |
1010 | 400 |
1256 | 401 switch (type) { |
1010 | 402 case T_VOID: |
403 break; | |
404 | |
405 case T_BOOLEAN: | |
406 #ifndef VM_LITTLE_ENDIAN | |
407 result[0] <<= (BitsPerWord - BitsPerByte); | |
408 #endif | |
409 SET_LOCALS_INT(*(jboolean *) result != 0, 0); | |
410 break; | |
411 | |
412 case T_CHAR: | |
413 #ifndef VM_LITTLE_ENDIAN | |
414 result[0] <<= (BitsPerWord - BitsPerShort); | |
415 #endif | |
416 SET_LOCALS_INT(*(jchar *) result, 0); | |
417 break; | |
418 | |
419 case T_BYTE: | |
420 #ifndef VM_LITTLE_ENDIAN | |
421 result[0] <<= (BitsPerWord - BitsPerByte); | |
422 #endif | |
423 SET_LOCALS_INT(*(jbyte *) result, 0); | |
424 break; | |
425 | |
426 case T_SHORT: | |
427 #ifndef VM_LITTLE_ENDIAN | |
428 result[0] <<= (BitsPerWord - BitsPerShort); | |
429 #endif | |
430 SET_LOCALS_INT(*(jshort *) result, 0); | |
431 break; | |
432 | |
433 case T_INT: | |
434 #ifndef VM_LITTLE_ENDIAN | |
435 result[0] <<= (BitsPerWord - BitsPerInt); | |
436 #endif | |
437 SET_LOCALS_INT(*(jint *) result, 0); | |
438 break; | |
439 | |
440 case T_LONG: | |
441 SET_LOCALS_LONG(*(jlong *) result, 0); | |
442 break; | |
443 | |
444 case T_FLOAT: | |
445 SET_LOCALS_FLOAT(*(jfloat *) result, 0); | |
446 break; | |
447 | |
448 case T_DOUBLE: | |
449 SET_LOCALS_DOUBLE(*(jdouble *) result, 0); | |
450 break; | |
451 | |
452 case T_OBJECT: | |
453 case T_ARRAY: | |
454 SET_LOCALS_OBJECT(istate->oop_temp(), 0); | |
455 break; | |
456 | |
457 default: | |
458 ShouldNotReachHere(); | |
459 } | |
460 } | |
1514 | 461 |
462 // No deoptimized frames on the stack | |
463 return 0; | |
1010 | 464 } |
465 | |
1514 | 466 int CppInterpreter::accessor_entry(methodOop method, intptr_t UNUSED, TRAPS) { |
1010 | 467 JavaThread *thread = (JavaThread *) THREAD; |
468 ZeroStack *stack = thread->zero_stack(); | |
469 intptr_t *locals = stack->sp(); | |
470 | |
471 // Drop into the slow path if we need a safepoint check | |
472 if (SafepointSynchronize::do_call_back()) { | |
1514 | 473 return normal_entry(method, 0, THREAD); |
1010 | 474 } |
475 | |
476 // Load the object pointer and drop into the slow path | |
477 // if we have a NullPointerException | |
478 oop object = LOCALS_OBJECT(0); | |
479 if (object == NULL) { | |
1514 | 480 return normal_entry(method, 0, THREAD); |
1010 | 481 } |
482 | |
483 // Read the field index from the bytecode, which looks like this: | |
484 // 0: aload_0 | |
485 // 1: getfield | |
486 // 2: index | |
487 // 3: index | |
488 // 4: ireturn/areturn | |
489 // NB this is not raw bytecode: index is in machine order | |
490 u1 *code = method->code_base(); | |
491 assert(code[0] == Bytecodes::_aload_0 && | |
492 code[1] == Bytecodes::_getfield && | |
493 (code[4] == Bytecodes::_ireturn || | |
494 code[4] == Bytecodes::_areturn), "should do"); | |
495 u2 index = Bytes::get_native_u2(&code[2]); | |
496 | |
497 // Get the entry from the constant pool cache, and drop into | |
498 // the slow path if it has not been resolved | |
499 constantPoolCacheOop cache = method->constants()->cache(); | |
500 ConstantPoolCacheEntry* entry = cache->entry_at(index); | |
501 if (!entry->is_resolved(Bytecodes::_getfield)) { | |
1514 | 502 return normal_entry(method, 0, THREAD); |
1010 | 503 } |
504 | |
505 // Get the result and push it onto the stack | |
506 switch (entry->flag_state()) { | |
507 case ltos: | |
508 case dtos: | |
1514 | 509 stack->overflow_check(1, CHECK_0); |
1010 | 510 stack->alloc(wordSize); |
511 break; | |
512 } | |
513 if (entry->is_volatile()) { | |
514 switch (entry->flag_state()) { | |
515 case ctos: | |
516 SET_LOCALS_INT(object->char_field_acquire(entry->f2()), 0); | |
517 break; | |
518 | |
519 case btos: | |
520 SET_LOCALS_INT(object->byte_field_acquire(entry->f2()), 0); | |
521 break; | |
522 | |
523 case stos: | |
524 SET_LOCALS_INT(object->short_field_acquire(entry->f2()), 0); | |
525 break; | |
526 | |
527 case itos: | |
528 SET_LOCALS_INT(object->int_field_acquire(entry->f2()), 0); | |
529 break; | |
530 | |
531 case ltos: | |
532 SET_LOCALS_LONG(object->long_field_acquire(entry->f2()), 0); | |
533 break; | |
534 | |
535 case ftos: | |
536 SET_LOCALS_FLOAT(object->float_field_acquire(entry->f2()), 0); | |
537 break; | |
538 | |
539 case dtos: | |
540 SET_LOCALS_DOUBLE(object->double_field_acquire(entry->f2()), 0); | |
541 break; | |
542 | |
543 case atos: | |
544 SET_LOCALS_OBJECT(object->obj_field_acquire(entry->f2()), 0); | |
545 break; | |
546 | |
547 default: | |
548 ShouldNotReachHere(); | |
549 } | |
550 } | |
551 else { | |
552 switch (entry->flag_state()) { | |
553 case ctos: | |
554 SET_LOCALS_INT(object->char_field(entry->f2()), 0); | |
555 break; | |
556 | |
557 case btos: | |
558 SET_LOCALS_INT(object->byte_field(entry->f2()), 0); | |
559 break; | |
560 | |
561 case stos: | |
562 SET_LOCALS_INT(object->short_field(entry->f2()), 0); | |
563 break; | |
564 | |
565 case itos: | |
566 SET_LOCALS_INT(object->int_field(entry->f2()), 0); | |
567 break; | |
568 | |
569 case ltos: | |
570 SET_LOCALS_LONG(object->long_field(entry->f2()), 0); | |
571 break; | |
572 | |
573 case ftos: | |
574 SET_LOCALS_FLOAT(object->float_field(entry->f2()), 0); | |
575 break; | |
576 | |
577 case dtos: | |
578 SET_LOCALS_DOUBLE(object->double_field(entry->f2()), 0); | |
579 break; | |
580 | |
581 case atos: | |
582 SET_LOCALS_OBJECT(object->obj_field(entry->f2()), 0); | |
583 break; | |
584 | |
585 default: | |
586 ShouldNotReachHere(); | |
587 } | |
588 } | |
1514 | 589 |
590 // No deoptimized frames on the stack | |
591 return 0; | |
1010 | 592 } |
593 | |
1514 | 594 int CppInterpreter::empty_entry(methodOop method, intptr_t UNUSED, TRAPS) { |
1010 | 595 JavaThread *thread = (JavaThread *) THREAD; |
596 ZeroStack *stack = thread->zero_stack(); | |
597 | |
598 // Drop into the slow path if we need a safepoint check | |
599 if (SafepointSynchronize::do_call_back()) { | |
1514 | 600 return normal_entry(method, 0, THREAD); |
1010 | 601 } |
602 | |
603 // Pop our parameters | |
604 stack->set_sp(stack->sp() + method->size_of_parameters()); | |
1514 | 605 |
606 // No deoptimized frames on the stack | |
607 return 0; | |
1010 | 608 } |
609 | |
1379 | 610 InterpreterFrame *InterpreterFrame::build(const methodOop method, TRAPS) { |
611 JavaThread *thread = (JavaThread *) THREAD; | |
612 ZeroStack *stack = thread->zero_stack(); | |
613 | |
614 // Calculate the size of the frame we'll build, including | |
615 // any adjustments to the caller's frame that we'll make. | |
616 int extra_locals = 0; | |
617 int monitor_words = 0; | |
618 int stack_words = 0; | |
1010 | 619 |
1379 | 620 if (!method->is_native()) { |
621 extra_locals = method->max_locals() - method->size_of_parameters(); | |
622 stack_words = method->max_stack(); | |
1010 | 623 } |
1379 | 624 if (method->is_synchronized()) { |
625 monitor_words = frame::interpreter_frame_monitor_size(); | |
626 } | |
627 stack->overflow_check( | |
628 extra_locals + header_words + monitor_words + stack_words, CHECK_NULL); | |
1010 | 629 |
1379 | 630 // Adjust the caller's stack frame to accomodate any additional |
631 // local variables we have contiguously with our parameters. | |
632 for (int i = 0; i < extra_locals; i++) | |
633 stack->push(0); | |
1010 | 634 |
635 intptr_t *locals; | |
636 if (method->is_native()) | |
637 locals = stack->sp() + (method->size_of_parameters() - 1); | |
638 else | |
639 locals = stack->sp() + (method->max_locals() - 1); | |
640 | |
641 stack->push(0); // next_frame, filled in later | |
642 intptr_t *fp = stack->sp(); | |
643 assert(fp - stack->sp() == next_frame_off, "should be"); | |
644 | |
645 stack->push(INTERPRETER_FRAME); | |
646 assert(fp - stack->sp() == frame_type_off, "should be"); | |
647 | |
648 interpreterState istate = | |
649 (interpreterState) stack->alloc(sizeof(BytecodeInterpreter)); | |
650 assert(fp - stack->sp() == istate_off, "should be"); | |
651 | |
652 istate->set_locals(locals); | |
653 istate->set_method(method); | |
654 istate->set_self_link(istate); | |
655 istate->set_prev_link(NULL); | |
656 istate->set_thread(thread); | |
657 istate->set_bcp(method->is_native() ? NULL : method->code_base()); | |
658 istate->set_constants(method->constants()->cache()); | |
659 istate->set_msg(BytecodeInterpreter::method_entry); | |
660 istate->set_oop_temp(NULL); | |
661 istate->set_mdx(NULL); | |
662 istate->set_callee(NULL); | |
663 | |
664 istate->set_monitor_base((BasicObjectLock *) stack->sp()); | |
665 if (method->is_synchronized()) { | |
666 BasicObjectLock *monitor = | |
667 (BasicObjectLock *) stack->alloc(monitor_words * wordSize); | |
668 oop object; | |
669 if (method->is_static()) | |
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670 object = method->constants()->pool_holder()->java_mirror(); |
1010 | 671 else |
672 object = (oop) locals[0]; | |
673 monitor->set_obj(object); | |
674 } | |
675 | |
676 istate->set_stack_base(stack->sp()); | |
677 istate->set_stack(stack->sp() - 1); | |
678 if (stack_words) | |
679 stack->alloc(stack_words * wordSize); | |
680 istate->set_stack_limit(stack->sp() - 1); | |
681 | |
682 return (InterpreterFrame *) fp; | |
683 } | |
684 | |
685 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
686 int i = 0; | |
687 switch (type) { | |
688 case T_BOOLEAN: i = 0; break; | |
689 case T_CHAR : i = 1; break; | |
690 case T_BYTE : i = 2; break; | |
691 case T_SHORT : i = 3; break; | |
692 case T_INT : i = 4; break; | |
693 case T_LONG : i = 5; break; | |
694 case T_VOID : i = 6; break; | |
695 case T_FLOAT : i = 7; break; | |
696 case T_DOUBLE : i = 8; break; | |
697 case T_OBJECT : i = 9; break; | |
698 case T_ARRAY : i = 9; break; | |
699 default : ShouldNotReachHere(); | |
700 } | |
701 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
702 "index out of bounds"); | |
703 return i; | |
704 } | |
705 | |
1256 | 706 BasicType CppInterpreter::result_type_of(methodOop method) { |
707 BasicType t; | |
708 switch (method->result_index()) { | |
709 case 0 : t = T_BOOLEAN; break; | |
710 case 1 : t = T_CHAR; break; | |
711 case 2 : t = T_BYTE; break; | |
712 case 3 : t = T_SHORT; break; | |
713 case 4 : t = T_INT; break; | |
714 case 5 : t = T_LONG; break; | |
715 case 6 : t = T_VOID; break; | |
716 case 7 : t = T_FLOAT; break; | |
717 case 8 : t = T_DOUBLE; break; | |
718 case 9 : t = T_OBJECT; break; | |
719 default: ShouldNotReachHere(); | |
720 } | |
721 assert(AbstractInterpreter::BasicType_as_index(t) == method->result_index(), | |
722 "out of step with AbstractInterpreter::BasicType_as_index"); | |
723 return t; | |
724 } | |
725 | |
1010 | 726 address InterpreterGenerator::generate_empty_entry() { |
727 if (!UseFastEmptyMethods) | |
728 return NULL; | |
729 | |
730 return generate_entry((address) CppInterpreter::empty_entry); | |
731 } | |
732 | |
733 address InterpreterGenerator::generate_accessor_entry() { | |
734 if (!UseFastAccessorMethods) | |
735 return NULL; | |
736 | |
737 return generate_entry((address) CppInterpreter::accessor_entry); | |
738 } | |
739 | |
740 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
741 assert(synchronized == false, "should be"); | |
742 | |
743 return generate_entry((address) CppInterpreter::native_entry); | |
744 } | |
745 | |
746 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
747 assert(synchronized == false, "should be"); | |
748 | |
749 return generate_entry((address) CppInterpreter::normal_entry); | |
750 } | |
751 | |
752 address AbstractInterpreterGenerator::generate_method_entry( | |
753 AbstractInterpreter::MethodKind kind) { | |
754 address entry_point = NULL; | |
755 | |
756 switch (kind) { | |
757 case Interpreter::zerolocals: | |
758 case Interpreter::zerolocals_synchronized: | |
759 break; | |
760 | |
761 case Interpreter::native: | |
762 entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); | |
763 break; | |
764 | |
765 case Interpreter::native_synchronized: | |
766 entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); | |
767 break; | |
768 | |
769 case Interpreter::empty: | |
770 entry_point = ((InterpreterGenerator*) this)->generate_empty_entry(); | |
771 break; | |
772 | |
773 case Interpreter::accessor: | |
774 entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry(); | |
775 break; | |
776 | |
777 case Interpreter::abstract: | |
778 entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry(); | |
779 break; | |
780 | |
781 case Interpreter::method_handle: | |
782 entry_point = ((InterpreterGenerator*) this)->generate_method_handle_entry(); | |
783 break; | |
784 | |
785 case Interpreter::java_lang_math_sin: | |
786 case Interpreter::java_lang_math_cos: | |
787 case Interpreter::java_lang_math_tan: | |
788 case Interpreter::java_lang_math_abs: | |
789 case Interpreter::java_lang_math_log: | |
790 case Interpreter::java_lang_math_log10: | |
791 case Interpreter::java_lang_math_sqrt: | |
792 entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind); | |
793 break; | |
794 | |
795 default: | |
796 ShouldNotReachHere(); | |
797 } | |
798 | |
799 if (entry_point == NULL) | |
800 entry_point = ((InterpreterGenerator*) this)->generate_normal_entry(false); | |
801 | |
802 return entry_point; | |
803 } | |
804 | |
805 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
806 : CppInterpreterGenerator(code) { | |
807 generate_all(); | |
808 } | |
809 | |
810 // Deoptimization helpers | |
811 | |
1379 | 812 InterpreterFrame *InterpreterFrame::build(int size, TRAPS) { |
813 ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack(); | |
814 | |
1010 | 815 int size_in_words = size >> LogBytesPerWord; |
816 assert(size_in_words * wordSize == size, "unaligned"); | |
817 assert(size_in_words >= header_words, "too small"); | |
1379 | 818 stack->overflow_check(size_in_words, CHECK_NULL); |
1010 | 819 |
820 stack->push(0); // next_frame, filled in later | |
821 intptr_t *fp = stack->sp(); | |
822 assert(fp - stack->sp() == next_frame_off, "should be"); | |
823 | |
824 stack->push(INTERPRETER_FRAME); | |
825 assert(fp - stack->sp() == frame_type_off, "should be"); | |
826 | |
827 interpreterState istate = | |
828 (interpreterState) stack->alloc(sizeof(BytecodeInterpreter)); | |
829 assert(fp - stack->sp() == istate_off, "should be"); | |
830 istate->set_self_link(NULL); // mark invalid | |
831 | |
832 stack->alloc((size_in_words - header_words) * wordSize); | |
833 | |
834 return (InterpreterFrame *) fp; | |
835 } | |
836 | |
837 int AbstractInterpreter::layout_activation(methodOop method, | |
838 int tempcount, | |
839 int popframe_extra_args, | |
840 int moncount, | |
841 int callee_param_count, | |
842 int callee_locals, | |
843 frame* caller, | |
844 frame* interpreter_frame, | |
845 bool is_top_frame) { | |
846 assert(popframe_extra_args == 0, "what to do?"); | |
847 assert(!is_top_frame || (!callee_locals && !callee_param_count), | |
1605 | 848 "top frame should have no caller"); |
1010 | 849 |
850 // This code must exactly match what InterpreterFrame::build | |
851 // does (the full InterpreterFrame::build, that is, not the | |
852 // one that creates empty frames for the deoptimizer). | |
853 // | |
854 // If interpreter_frame is not NULL then it will be filled in. | |
855 // It's size is determined by a previous call to this method, | |
856 // so it should be correct. | |
857 // | |
858 // Note that tempcount is the current size of the expression | |
859 // stack. For top most frames we will allocate a full sized | |
860 // expression stack and not the trimmed version that non-top | |
861 // frames have. | |
862 | |
863 int header_words = InterpreterFrame::header_words; | |
864 int monitor_words = moncount * frame::interpreter_frame_monitor_size(); | |
865 int stack_words = is_top_frame ? method->max_stack() : tempcount; | |
866 int callee_extra_locals = callee_locals - callee_param_count; | |
867 | |
868 if (interpreter_frame) { | |
1505 | 869 intptr_t *locals = interpreter_frame->fp() + method->max_locals(); |
1010 | 870 interpreterState istate = interpreter_frame->get_interpreterState(); |
871 intptr_t *monitor_base = (intptr_t*) istate; | |
872 intptr_t *stack_base = monitor_base - monitor_words; | |
873 intptr_t *stack = stack_base - tempcount - 1; | |
874 | |
875 BytecodeInterpreter::layout_interpreterState(istate, | |
876 caller, | |
877 NULL, | |
878 method, | |
879 locals, | |
880 stack, | |
881 stack_base, | |
882 monitor_base, | |
883 NULL, | |
884 is_top_frame); | |
885 } | |
886 return header_words + monitor_words + stack_words + callee_extra_locals; | |
887 } | |
888 | |
889 void BytecodeInterpreter::layout_interpreterState(interpreterState istate, | |
890 frame* caller, | |
891 frame* current, | |
892 methodOop method, | |
893 intptr_t* locals, | |
894 intptr_t* stack, | |
895 intptr_t* stack_base, | |
896 intptr_t* monitor_base, | |
897 intptr_t* frame_bottom, | |
898 bool is_top_frame) { | |
899 istate->set_locals(locals); | |
900 istate->set_method(method); | |
901 istate->set_self_link(istate); | |
902 istate->set_prev_link(NULL); | |
903 // thread will be set by a hacky repurposing of frame::patch_pc() | |
904 // bcp will be set by vframeArrayElement::unpack_on_stack() | |
905 istate->set_constants(method->constants()->cache()); | |
906 istate->set_msg(BytecodeInterpreter::method_resume); | |
907 istate->set_bcp_advance(0); | |
908 istate->set_oop_temp(NULL); | |
909 istate->set_mdx(NULL); | |
910 if (caller->is_interpreted_frame()) { | |
911 interpreterState prev = caller->get_interpreterState(); | |
912 prev->set_callee(method); | |
913 if (*prev->bcp() == Bytecodes::_invokeinterface) | |
914 prev->set_bcp_advance(5); | |
915 else | |
916 prev->set_bcp_advance(3); | |
917 } | |
918 istate->set_callee(NULL); | |
919 istate->set_monitor_base((BasicObjectLock *) monitor_base); | |
920 istate->set_stack_base(stack_base); | |
921 istate->set_stack(stack); | |
922 istate->set_stack_limit(stack_base - method->max_stack() - 1); | |
923 } | |
924 | |
925 address CppInterpreter::return_entry(TosState state, int length) { | |
926 ShouldNotCallThis(); | |
927 } | |
928 | |
929 address CppInterpreter::deopt_entry(TosState state, int length) { | |
930 return NULL; | |
931 } | |
932 | |
933 // Helper for (runtime) stack overflow checks | |
934 | |
935 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
936 return 0; | |
937 } | |
938 | |
939 // Helper for figuring out if frames are interpreter frames | |
940 | |
941 bool CppInterpreter::contains(address pc) { | |
942 #ifdef PRODUCT | |
943 ShouldNotCallThis(); | |
944 #else | |
945 return false; // make frame::print_value_on work | |
946 #endif // !PRODUCT | |
947 } | |
948 | |
949 // Result handlers and convertors | |
950 | |
951 address CppInterpreterGenerator::generate_result_handler_for( | |
952 BasicType type) { | |
953 assembler()->advance(1); | |
954 return ShouldNotCallThisStub(); | |
955 } | |
956 | |
957 address CppInterpreterGenerator::generate_tosca_to_stack_converter( | |
958 BasicType type) { | |
959 assembler()->advance(1); | |
960 return ShouldNotCallThisStub(); | |
961 } | |
962 | |
963 address CppInterpreterGenerator::generate_stack_to_stack_converter( | |
964 BasicType type) { | |
965 assembler()->advance(1); | |
966 return ShouldNotCallThisStub(); | |
967 } | |
968 | |
969 address CppInterpreterGenerator::generate_stack_to_native_abi_converter( | |
970 BasicType type) { | |
971 assembler()->advance(1); | |
972 return ShouldNotCallThisStub(); | |
973 } | |
974 | |
975 #endif // CC_INTERP |