1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "interp_masm_x86_32.hpp"
27 #include "interpreter/interpreter.hpp"
28 #include "interpreter/interpreterRuntime.hpp"
29 #include "oops/arrayOop.hpp"
30 #include "oops/markOop.hpp"
31 #include "oops/methodDataOop.hpp"
32 #include "oops/methodOop.hpp"
33 #include "prims/jvmtiExport.hpp"
34 #include "prims/jvmtiRedefineClassesTrace.hpp"
35 #include "prims/jvmtiThreadState.hpp"
36 #include "runtime/basicLock.hpp"
37 #include "runtime/biasedLocking.hpp"
38 #include "runtime/sharedRuntime.hpp"
39 #ifdef TARGET_OS_FAMILY_linux
40 # include "thread_linux.inline.hpp"
41 #endif
42 #ifdef TARGET_OS_FAMILY_solaris
43 # include "thread_solaris.inline.hpp"
44 #endif
45 #ifdef TARGET_OS_FAMILY_windows
46 # include "thread_windows.inline.hpp"
47 #endif
48
49
50 // Implementation of InterpreterMacroAssembler
51 #ifdef CC_INTERP
52 void InterpreterMacroAssembler::get_method(Register reg) {
53 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize)));
54 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method)));
55 }
56 #endif // CC_INTERP
57
58
59 #ifndef CC_INTERP
60 void InterpreterMacroAssembler::call_VM_leaf_base(
61 address entry_point,
62 int number_of_arguments
63 ) {
64 // interpreter specific
65 //
66 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer
67 // since these are callee saved registers and no blocking/
68 // GC can happen in leaf calls.
69 // Further Note: DO NOT save/restore bcp/locals. If a caller has
70 // already saved them so that it can use rsi/rdi as temporaries
71 // then a save/restore here will DESTROY the copy the caller
72 // saved! There used to be a save_bcp() that only happened in
73 // the ASSERT path (no restore_bcp). Which caused bizarre failures
74 // when jvm built with ASSERTs.
75 #ifdef ASSERT
76 { Label L;
77 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
78 jcc(Assembler::equal, L);
79 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL");
80 bind(L);
81 }
82 #endif
83 // super call
84 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments);
85 // interpreter specific
86
87 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals
88 // but since they may not have been saved (and we don't want to
89 // save them here (see note above) the assert is invalid.
90 }
91
92
93 void InterpreterMacroAssembler::call_VM_base(
94 Register oop_result,
95 Register java_thread,
96 Register last_java_sp,
97 address entry_point,
98 int number_of_arguments,
99 bool check_exceptions
100 ) {
101 #ifdef ASSERT
102 { Label L;
103 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
104 jcc(Assembler::equal, L);
105 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL");
106 bind(L);
107 }
108 #endif /* ASSERT */
109 // interpreter specific
110 //
111 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't
112 // really make a difference for these runtime calls, since they are
113 // slow anyway. Btw., bcp must be saved/restored since it may change
114 // due to GC.
115 assert(java_thread == noreg , "not expecting a precomputed java thread");
116 save_bcp();
117 // super call
118 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions);
119 // interpreter specific
120 restore_bcp();
121 restore_locals();
122 }
123
124
125 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) {
126 if (JvmtiExport::can_pop_frame()) {
127 Label L;
128 // Initiate popframe handling only if it is not already being processed. If the flag
129 // has the popframe_processing bit set, it means that this code is called *during* popframe
130 // handling - we don't want to reenter.
131 Register pop_cond = java_thread; // Not clear if any other register is available...
132 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset()));
133 testl(pop_cond, JavaThread::popframe_pending_bit);
134 jcc(Assembler::zero, L);
135 testl(pop_cond, JavaThread::popframe_processing_bit);
136 jcc(Assembler::notZero, L);
137 // Call Interpreter::remove_activation_preserving_args_entry() to get the
138 // address of the same-named entrypoint in the generated interpreter code.
139 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry));
140 jmp(rax);
141 bind(L);
142 get_thread(java_thread);
143 }
144 }
145
146
147 void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
148 get_thread(rcx);
149 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset()));
150 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset());
151 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset());
152 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset());
153 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset()
154 + in_ByteSize(wordSize));
155 switch (state) {
156 case atos: movptr(rax, oop_addr);
157 movptr(oop_addr, NULL_WORD);
158 verify_oop(rax, state); break;
159 case ltos:
160 movl(rdx, val_addr1); // fall through
161 case btos: // fall through
162 case ctos: // fall through
163 case stos: // fall through
164 case itos: movl(rax, val_addr); break;
165 case ftos: fld_s(val_addr); break;
166 case dtos: fld_d(val_addr); break;
167 case vtos: /* nothing to do */ break;
168 default : ShouldNotReachHere();
169 }
170 // Clean up tos value in the thread object
171 movl(tos_addr, (int32_t) ilgl);
172 movptr(val_addr, NULL_WORD);
173 NOT_LP64(movptr(val_addr1, NULL_WORD));
174 }
175
176
177 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) {
178 if (JvmtiExport::can_force_early_return()) {
179 Label L;
180 Register tmp = java_thread;
181 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset()));
182 testptr(tmp, tmp);
183 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit;
184
185 // Initiate earlyret handling only if it is not already being processed.
186 // If the flag has the earlyret_processing bit set, it means that this code
187 // is called *during* earlyret handling - we don't want to reenter.
188 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset()));
189 cmpl(tmp, JvmtiThreadState::earlyret_pending);
190 jcc(Assembler::notEqual, L);
191
192 // Call Interpreter::remove_activation_early_entry() to get the address of the
193 // same-named entrypoint in the generated interpreter code.
194 get_thread(java_thread);
195 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset()));
196 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset()));
197 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1);
198 jmp(rax);
199 bind(L);
200 get_thread(java_thread);
201 }
202 }
203
204
205 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) {
206 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
207 movl(reg, Address(rsi, bcp_offset));
208 bswapl(reg);
209 shrl(reg, 16);
210 }
211
212
213 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) {
214 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
215 if (index_size == sizeof(u2)) {
216 load_unsigned_short(reg, Address(rsi, bcp_offset));
217 } else if (index_size == sizeof(u4)) {
218 assert(EnableInvokeDynamic, "giant index used only for JSR 292");
219 movl(reg, Address(rsi, bcp_offset));
220 // Check if the secondary index definition is still ~x, otherwise
221 // we have to change the following assembler code to calculate the
222 // plain index.
223 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
224 notl(reg); // convert to plain index
225 } else if (index_size == sizeof(u1)) {
226 assert(EnableInvokeDynamic, "tiny index used only for JSR 292");
227 load_unsigned_byte(reg, Address(rsi, bcp_offset));
228 } else {
229 ShouldNotReachHere();
230 }
231 }
232
233
234 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
235 int bcp_offset, size_t index_size) {
236 assert_different_registers(cache, index);
237 get_cache_index_at_bcp(index, bcp_offset, index_size);
238 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
239 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
240 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
241 }
242
243
244 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache,
245 Register index,
246 Register bytecode,
247 int byte_no,
248 int bcp_offset,
249 size_t index_size) {
250 get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size);
251 movptr(bytecode, Address(cache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset()));
252 const int shift_count = (1 + byte_no) * BitsPerByte;
253 shrptr(bytecode, shift_count);
254 andptr(bytecode, 0xFF);
255 }
256
257
258 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
259 int bcp_offset, size_t index_size) {
260 assert(cache != tmp, "must use different register");
261 get_cache_index_at_bcp(tmp, bcp_offset, index_size);
262 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
263 // convert from field index to ConstantPoolCacheEntry index
264 // and from word offset to byte offset
265 shll(tmp, 2 + LogBytesPerWord);
266 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
267 // skip past the header
268 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset()));
269 addptr(cache, tmp); // construct pointer to cache entry
270 }
271
272
273 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
274 // a subtype of super_klass. EAX holds the super_klass. Blows ECX.
275 // Resets EDI to locals. Register sub_klass cannot be any of the above.
276 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) {
277 assert( Rsub_klass != rax, "rax, holds superklass" );
278 assert( Rsub_klass != rcx, "used as a temp" );
279 assert( Rsub_klass != rdi, "used as a temp, restored from locals" );
280
281 // Profile the not-null value's klass.
282 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi
283
284 // Do the check.
285 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx
286
287 // Profile the failure of the check.
288 profile_typecheck_failed(rcx); // blows rcx
289 }
290
291 void InterpreterMacroAssembler::f2ieee() {
292 if (IEEEPrecision) {
293 fstp_s(Address(rsp, 0));
294 fld_s(Address(rsp, 0));
295 }
296 }
297
298
299 void InterpreterMacroAssembler::d2ieee() {
300 if (IEEEPrecision) {
301 fstp_d(Address(rsp, 0));
302 fld_d(Address(rsp, 0));
303 }
304 }
305
306 // Java Expression Stack
307
308 void InterpreterMacroAssembler::pop_ptr(Register r) {
309 pop(r);
310 }
311
312 void InterpreterMacroAssembler::pop_i(Register r) {
313 pop(r);
314 }
315
316 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) {
317 pop(lo);
318 pop(hi);
319 }
320
321 void InterpreterMacroAssembler::pop_f() {
322 fld_s(Address(rsp, 0));
323 addptr(rsp, 1 * wordSize);
324 }
325
326 void InterpreterMacroAssembler::pop_d() {
327 fld_d(Address(rsp, 0));
328 addptr(rsp, 2 * wordSize);
329 }
330
331
332 void InterpreterMacroAssembler::pop(TosState state) {
333 switch (state) {
334 case atos: pop_ptr(rax); break;
335 case btos: // fall through
336 case ctos: // fall through
337 case stos: // fall through
338 case itos: pop_i(rax); break;
339 case ltos: pop_l(rax, rdx); break;
340 case ftos: pop_f(); break;
341 case dtos: pop_d(); break;
342 case vtos: /* nothing to do */ break;
343 default : ShouldNotReachHere();
344 }
345 verify_oop(rax, state);
346 }
347
348 void InterpreterMacroAssembler::push_ptr(Register r) {
349 push(r);
350 }
351
352 void InterpreterMacroAssembler::push_i(Register r) {
353 push(r);
354 }
355
356 void InterpreterMacroAssembler::push_l(Register lo, Register hi) {
357 push(hi);
358 push(lo);
359 }
360
361 void InterpreterMacroAssembler::push_f() {
362 // Do not schedule for no AGI! Never write beyond rsp!
363 subptr(rsp, 1 * wordSize);
364 fstp_s(Address(rsp, 0));
365 }
366
367 void InterpreterMacroAssembler::push_d(Register r) {
368 // Do not schedule for no AGI! Never write beyond rsp!
369 subptr(rsp, 2 * wordSize);
370 fstp_d(Address(rsp, 0));
371 }
372
373
374 void InterpreterMacroAssembler::push(TosState state) {
375 verify_oop(rax, state);
376 switch (state) {
377 case atos: push_ptr(rax); break;
378 case btos: // fall through
379 case ctos: // fall through
380 case stos: // fall through
381 case itos: push_i(rax); break;
382 case ltos: push_l(rax, rdx); break;
383 case ftos: push_f(); break;
384 case dtos: push_d(rax); break;
385 case vtos: /* nothing to do */ break;
386 default : ShouldNotReachHere();
387 }
388 }
389
390
391 // Helpers for swap and dup
392 void InterpreterMacroAssembler::load_ptr(int n, Register val) {
393 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n)));
394 }
395
396 void InterpreterMacroAssembler::store_ptr(int n, Register val) {
397 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val);
398 }
399
400 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() {
401 // set sender sp
402 lea(rsi, Address(rsp, wordSize));
403 // record last_sp
404 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi);
405 }
406
407
408 // Jump to from_interpreted entry of a call unless single stepping is possible
409 // in this thread in which case we must call the i2i entry
410 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) {
411 prepare_to_jump_from_interpreted();
412
413 if (JvmtiExport::can_post_interpreter_events()) {
414 Label run_compiled_code;
415 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
416 // compiled code in threads for which the event is enabled. Check here for
417 // interp_only_mode if these events CAN be enabled.
418 get_thread(temp);
419 // interp_only is an int, on little endian it is sufficient to test the byte only
420 // Is a cmpl faster?
421 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
422 jccb(Assembler::zero, run_compiled_code);
423 jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
424 bind(run_compiled_code);
425 }
426
427 jmp(Address(method, methodOopDesc::from_interpreted_offset()));
428
429 }
430
431
432 // The following two routines provide a hook so that an implementation
433 // can schedule the dispatch in two parts. Intel does not do this.
434 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
435 // Nothing Intel-specific to be done here.
436 }
437
438 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
439 dispatch_next(state, step);
440 }
441
442 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table,
443 bool verifyoop) {
444 verify_FPU(1, state);
445 if (VerifyActivationFrameSize) {
446 Label L;
447 mov(rcx, rbp);
448 subptr(rcx, rsp);
449 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize;
450 cmpptr(rcx, min_frame_size);
451 jcc(Assembler::greaterEqual, L);
452 stop("broken stack frame");
453 bind(L);
454 }
455 if (verifyoop) verify_oop(rax, state);
456 Address index(noreg, rbx, Address::times_ptr);
457 ExternalAddress tbl((address)table);
458 ArrayAddress dispatch(tbl, index);
459 jump(dispatch);
460 }
461
462
463 void InterpreterMacroAssembler::dispatch_only(TosState state) {
464 dispatch_base(state, Interpreter::dispatch_table(state));
465 }
466
467
468 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
469 dispatch_base(state, Interpreter::normal_table(state));
470 }
471
472 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) {
473 dispatch_base(state, Interpreter::normal_table(state), false);
474 }
475
476
477 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) {
478 // load next bytecode (load before advancing rsi to prevent AGI)
479 load_unsigned_byte(rbx, Address(rsi, step));
480 // advance rsi
481 increment(rsi, step);
482 dispatch_base(state, Interpreter::dispatch_table(state));
483 }
484
485
486 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
487 // load current bytecode
488 load_unsigned_byte(rbx, Address(rsi, 0));
489 dispatch_base(state, table);
490 }
491
492 // remove activation
493 //
494 // Unlock the receiver if this is a synchronized method.
495 // Unlock any Java monitors from syncronized blocks.
496 // Remove the activation from the stack.
497 //
498 // If there are locked Java monitors
499 // If throw_monitor_exception
500 // throws IllegalMonitorStateException
501 // Else if install_monitor_exception
502 // installs IllegalMonitorStateException
503 // Else
504 // no error processing
505 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr,
506 bool throw_monitor_exception,
507 bool install_monitor_exception,
508 bool notify_jvmdi) {
509 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result
510 // check if synchronized method
511 Label unlocked, unlock, no_unlock;
512
513 get_thread(rcx);
514 const Address do_not_unlock_if_synchronized(rcx,
515 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
516
517 movbool(rbx, do_not_unlock_if_synchronized);
518 mov(rdi,rbx);
519 movbool(do_not_unlock_if_synchronized, false); // reset the flag
520
521 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags
522 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset()));
523
524 testl(rcx, JVM_ACC_SYNCHRONIZED);
525 jcc(Assembler::zero, unlocked);
526
527 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
528 // is set.
529 mov(rcx,rdi);
530 testbool(rcx);
531 jcc(Assembler::notZero, no_unlock);
532
533 // unlock monitor
534 push(state); // save result
535
536 // BasicObjectLock will be first in list, since this is a synchronized method. However, need
537 // to check that the object has not been unlocked by an explicit monitorexit bytecode.
538 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock));
539 lea (rdx, monitor); // address of first monitor
540
541 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes()));
542 testptr(rax, rax);
543 jcc (Assembler::notZero, unlock);
544
545 pop(state);
546 if (throw_monitor_exception) {
547 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
548
549 // Entry already unlocked, need to throw exception
550 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
551 should_not_reach_here();
552 } else {
553 // Monitor already unlocked during a stack unroll.
554 // If requested, install an illegal_monitor_state_exception.
555 // Continue with stack unrolling.
556 if (install_monitor_exception) {
557 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
558 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
559 }
560 jmp(unlocked);
561 }
562
563 bind(unlock);
564 unlock_object(rdx);
565 pop(state);
566
567 // Check that for block-structured locking (i.e., that all locked objects has been unlocked)
568 bind(unlocked);
569
570 // rax, rdx: Might contain return value
571
572 // Check that all monitors are unlocked
573 {
574 Label loop, exception, entry, restart;
575 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
576 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
577 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
578
579 bind(restart);
580 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
581 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
582 jmp(entry);
583
584 // Entry already locked, need to throw exception
585 bind(exception);
586
587 if (throw_monitor_exception) {
588 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
589
590 // Throw exception
591 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
592 should_not_reach_here();
593 } else {
594 // Stack unrolling. Unlock object and install illegal_monitor_exception
595 // Unlock does not block, so don't have to worry about the frame
596
597 push(state);
598 mov(rdx, rcx);
599 unlock_object(rdx);
600 pop(state);
601
602 if (install_monitor_exception) {
603 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
604 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
605 }
606
607 jmp(restart);
608 }
609
610 bind(loop);
611 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
612 jcc(Assembler::notEqual, exception);
613
614 addptr(rcx, entry_size); // otherwise advance to next entry
615 bind(entry);
616 cmpptr(rcx, rbx); // check if bottom reached
617 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
618 }
619
620 bind(no_unlock);
621
622 // jvmti support
623 if (notify_jvmdi) {
624 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
625 } else {
626 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
627 }
628
629 // remove activation
630 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
631 leave(); // remove frame anchor
632 pop(ret_addr); // get return address
633 mov(rsp, rbx); // set sp to sender sp
634 if (UseSSE) {
635 // float and double are returned in xmm register in SSE-mode
636 if (state == ftos && UseSSE >= 1) {
637 subptr(rsp, wordSize);
638 fstp_s(Address(rsp, 0));
639 movflt(xmm0, Address(rsp, 0));
640 addptr(rsp, wordSize);
641 } else if (state == dtos && UseSSE >= 2) {
642 subptr(rsp, 2*wordSize);
643 fstp_d(Address(rsp, 0));
644 movdbl(xmm0, Address(rsp, 0));
645 addptr(rsp, 2*wordSize);
646 }
647 }
648 }
649
650 #endif /* !CC_INTERP */
651
652
653 // Lock object
654 //
655 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must
656 // be initialized with object to lock
657 void InterpreterMacroAssembler::lock_object(Register lock_reg) {
658 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
659
660 if (UseHeavyMonitors) {
661 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
662 } else {
663
664 Label done;
665
666 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
667 const Register obj_reg = rcx; // Will contain the oop
668
669 const int obj_offset = BasicObjectLock::obj_offset_in_bytes();
670 const int lock_offset = BasicObjectLock::lock_offset_in_bytes ();
671 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes();
672
673 Label slow_case;
674
675 // Load object pointer into obj_reg %rcx
676 movptr(obj_reg, Address(lock_reg, obj_offset));
677
678 if (UseBiasedLocking) {
679 // Note: we use noreg for the temporary register since it's hard
680 // to come up with a free register on all incoming code paths
681 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case);
682 }
683
684 // Load immediate 1 into swap_reg %rax,
685 movptr(swap_reg, (int32_t)1);
686
687 // Load (object->mark() | 1) into swap_reg %rax,
688 orptr(swap_reg, Address(obj_reg, 0));
689
690 // Save (object->mark() | 1) into BasicLock's displaced header
691 movptr(Address(lock_reg, mark_offset), swap_reg);
692
693 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock");
694 if (os::is_MP()) {
695 lock();
696 }
697 cmpxchgptr(lock_reg, Address(obj_reg, 0));
698 if (PrintBiasedLockingStatistics) {
699 cond_inc32(Assembler::zero,
700 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
701 }
702 jcc(Assembler::zero, done);
703
704 // Test if the oopMark is an obvious stack pointer, i.e.,
705 // 1) (mark & 3) == 0, and
706 // 2) rsp <= mark < mark + os::pagesize()
707 //
708 // These 3 tests can be done by evaluating the following
709 // expression: ((mark - rsp) & (3 - os::vm_page_size())),
710 // assuming both stack pointer and pagesize have their
711 // least significant 2 bits clear.
712 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg
713 subptr(swap_reg, rsp);
714 andptr(swap_reg, 3 - os::vm_page_size());
715
716 // Save the test result, for recursive case, the result is zero
717 movptr(Address(lock_reg, mark_offset), swap_reg);
718
719 if (PrintBiasedLockingStatistics) {
720 cond_inc32(Assembler::zero,
721 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
722 }
723 jcc(Assembler::zero, done);
724
725 bind(slow_case);
726
727 // Call the runtime routine for slow case
728 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
729
730 bind(done);
731 }
732 }
733
734
735 // Unlocks an object. Used in monitorexit bytecode and remove_activation.
736 //
737 // Argument: rdx : Points to BasicObjectLock structure for lock
738 // Throw an IllegalMonitorException if object is not locked by current thread
739 //
740 // Uses: rax, rbx, rcx, rdx
741 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
742 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
743
744 if (UseHeavyMonitors) {
745 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
746 } else {
747 Label done;
748
749 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
750 const Register header_reg = rbx; // Will contain the old oopMark
751 const Register obj_reg = rcx; // Will contain the oop
752
753 save_bcp(); // Save in case of exception
754
755 // Convert from BasicObjectLock structure to object and BasicLock structure
756 // Store the BasicLock address into %rax,
757 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes()));
758
759 // Load oop into obj_reg(%rcx)
760 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
761
762 // Free entry
763 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
764
765 if (UseBiasedLocking) {
766 biased_locking_exit(obj_reg, header_reg, done);
767 }
768
769 // Load the old header from BasicLock structure
770 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes()));
771
772 // Test for recursion
773 testptr(header_reg, header_reg);
774
775 // zero for recursive case
776 jcc(Assembler::zero, done);
777
778 // Atomic swap back the old header
779 if (os::is_MP()) lock();
780 cmpxchgptr(header_reg, Address(obj_reg, 0));
781
782 // zero for recursive case
783 jcc(Assembler::zero, done);
784
785 // Call the runtime routine for slow case.
786 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj
787 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
788
789 bind(done);
790
791 restore_bcp();
792 }
793 }
794
795
796 #ifndef CC_INTERP
797
798 // Test ImethodDataPtr. If it is null, continue at the specified label
799 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) {
800 assert(ProfileInterpreter, "must be profiling interpreter");
801 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
802 testptr(mdp, mdp);
803 jcc(Assembler::zero, zero_continue);
804 }
805
806
807 // Set the method data pointer for the current bcp.
808 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
809 assert(ProfileInterpreter, "must be profiling interpreter");
810 Label set_mdp;
811 push(rax);
812 push(rbx);
813
814 get_method(rbx);
815 // Test MDO to avoid the call if it is NULL.
816 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
817 testptr(rax, rax);
818 jcc(Assembler::zero, set_mdp);
819 // rbx,: method
820 // rsi: bcp
821 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi);
822 // rax,: mdi
823 // mdo is guaranteed to be non-zero here, we checked for it before the call.
824 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
825 addptr(rbx, in_bytes(methodDataOopDesc::data_offset()));
826 addptr(rax, rbx);
827 bind(set_mdp);
828 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax);
829 pop(rbx);
830 pop(rax);
831 }
832
833 void InterpreterMacroAssembler::verify_method_data_pointer() {
834 assert(ProfileInterpreter, "must be profiling interpreter");
835 #ifdef ASSERT
836 Label verify_continue;
837 push(rax);
838 push(rbx);
839 push(rcx);
840 push(rdx);
841 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue
842 get_method(rbx);
843
844 // If the mdp is valid, it will point to a DataLayout header which is
845 // consistent with the bcp. The converse is highly probable also.
846 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset())));
847 addptr(rdx, Address(rbx, methodOopDesc::const_offset()));
848 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset()));
849 cmpptr(rdx, rsi);
850 jcc(Assembler::equal, verify_continue);
851 // rbx,: method
852 // rsi: bcp
853 // rcx: mdp
854 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx);
855 bind(verify_continue);
856 pop(rdx);
857 pop(rcx);
858 pop(rbx);
859 pop(rax);
860 #endif // ASSERT
861 }
862
863
864 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) {
865 // %%% this seems to be used to store counter data which is surely 32bits
866 // however 64bit side stores 64 bits which seems wrong
867 assert(ProfileInterpreter, "must be profiling interpreter");
868 Address data(mdp_in, constant);
869 movptr(data, value);
870 }
871
872
873 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
874 int constant,
875 bool decrement) {
876 // Counter address
877 Address data(mdp_in, constant);
878
879 increment_mdp_data_at(data, decrement);
880 }
881
882
883 void InterpreterMacroAssembler::increment_mdp_data_at(Address data,
884 bool decrement) {
885
886 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
887 assert(ProfileInterpreter, "must be profiling interpreter");
888
889 // %%% 64bit treats this as 64 bit which seems unlikely
890 if (decrement) {
891 // Decrement the register. Set condition codes.
892 addl(data, -DataLayout::counter_increment);
893 // If the decrement causes the counter to overflow, stay negative
894 Label L;
895 jcc(Assembler::negative, L);
896 addl(data, DataLayout::counter_increment);
897 bind(L);
898 } else {
899 assert(DataLayout::counter_increment == 1,
900 "flow-free idiom only works with 1");
901 // Increment the register. Set carry flag.
902 addl(data, DataLayout::counter_increment);
903 // If the increment causes the counter to overflow, pull back by 1.
904 sbbl(data, 0);
905 }
906 }
907
908
909 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
910 Register reg,
911 int constant,
912 bool decrement) {
913 Address data(mdp_in, reg, Address::times_1, constant);
914
915 increment_mdp_data_at(data, decrement);
916 }
917
918
919 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) {
920 assert(ProfileInterpreter, "must be profiling interpreter");
921 int header_offset = in_bytes(DataLayout::header_offset());
922 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
923 // Set the flag
924 orl(Address(mdp_in, header_offset), header_bits);
925 }
926
927
928
929 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
930 int offset,
931 Register value,
932 Register test_value_out,
933 Label& not_equal_continue) {
934 assert(ProfileInterpreter, "must be profiling interpreter");
935 if (test_value_out == noreg) {
936 cmpptr(value, Address(mdp_in, offset));
937 } else {
938 // Put the test value into a register, so caller can use it:
939 movptr(test_value_out, Address(mdp_in, offset));
940 cmpptr(test_value_out, value);
941 }
942 jcc(Assembler::notEqual, not_equal_continue);
943 }
944
945
946 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) {
947 assert(ProfileInterpreter, "must be profiling interpreter");
948 Address disp_address(mdp_in, offset_of_disp);
949 addptr(mdp_in,disp_address);
950 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
951 }
952
953
954 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) {
955 assert(ProfileInterpreter, "must be profiling interpreter");
956 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
957 addptr(mdp_in, disp_address);
958 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
959 }
960
961
962 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) {
963 assert(ProfileInterpreter, "must be profiling interpreter");
964 addptr(mdp_in, constant);
965 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
966 }
967
968
969 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
970 assert(ProfileInterpreter, "must be profiling interpreter");
971 push(return_bci); // save/restore across call_VM
972 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci);
973 pop(return_bci);
974 }
975
976
977 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) {
978 if (ProfileInterpreter) {
979 Label profile_continue;
980
981 // If no method data exists, go to profile_continue.
982 // Otherwise, assign to mdp
983 test_method_data_pointer(mdp, profile_continue);
984
985 // We are taking a branch. Increment the taken count.
986 // We inline increment_mdp_data_at to return bumped_count in a register
987 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
988 Address data(mdp, in_bytes(JumpData::taken_offset()));
989
990 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit
991 movl(bumped_count,data);
992 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
993 addl(bumped_count, DataLayout::counter_increment);
994 sbbl(bumped_count, 0);
995 movl(data,bumped_count); // Store back out
996
997 // The method data pointer needs to be updated to reflect the new target.
998 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
999 bind (profile_continue);
1000 }
1001 }
1002
1003
1004 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
1005 if (ProfileInterpreter) {
1006 Label profile_continue;
1007
1008 // If no method data exists, go to profile_continue.
1009 test_method_data_pointer(mdp, profile_continue);
1010
1011 // We are taking a branch. Increment the not taken count.
1012 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
1013
1014 // The method data pointer needs to be updated to correspond to the next bytecode
1015 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
1016 bind (profile_continue);
1017 }
1018 }
1019
1020
1021 void InterpreterMacroAssembler::profile_call(Register mdp) {
1022 if (ProfileInterpreter) {
1023 Label profile_continue;
1024
1025 // If no method data exists, go to profile_continue.
1026 test_method_data_pointer(mdp, profile_continue);
1027
1028 // We are making a call. Increment the count.
1029 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1030
1031 // The method data pointer needs to be updated to reflect the new target.
1032 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
1033 bind (profile_continue);
1034 }
1035 }
1036
1037
1038 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
1039 if (ProfileInterpreter) {
1040 Label profile_continue;
1041
1042 // If no method data exists, go to profile_continue.
1043 test_method_data_pointer(mdp, profile_continue);
1044
1045 // We are making a call. Increment the count.
1046 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1047
1048 // The method data pointer needs to be updated to reflect the new target.
1049 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size()));
1050 bind (profile_continue);
1051 }
1052 }
1053
1054
1055 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp,
1056 Register reg2,
1057 bool receiver_can_be_null) {
1058 if (ProfileInterpreter) {
1059 Label profile_continue;
1060
1061 // If no method data exists, go to profile_continue.
1062 test_method_data_pointer(mdp, profile_continue);
1063
1064 Label skip_receiver_profile;
1065 if (receiver_can_be_null) {
1066 Label not_null;
1067 testptr(receiver, receiver);
1068 jccb(Assembler::notZero, not_null);
1069 // We are making a call. Increment the count for null receiver.
1070 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1071 jmp(skip_receiver_profile);
1072 bind(not_null);
1073 }
1074
1075 // Record the receiver type.
1076 record_klass_in_profile(receiver, mdp, reg2, true);
1077 bind(skip_receiver_profile);
1078
1079 // The method data pointer needs to be updated to reflect the new target.
1080 update_mdp_by_constant(mdp,
1081 in_bytes(VirtualCallData::
1082 virtual_call_data_size()));
1083 bind(profile_continue);
1084 }
1085 }
1086
1087
1088 void InterpreterMacroAssembler::record_klass_in_profile_helper(
1089 Register receiver, Register mdp,
1090 Register reg2, int start_row,
1091 Label& done, bool is_virtual_call) {
1092 if (TypeProfileWidth == 0) {
1093 if (is_virtual_call) {
1094 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1095 }
1096 return;
1097 }
1098
1099 int last_row = VirtualCallData::row_limit() - 1;
1100 assert(start_row <= last_row, "must be work left to do");
1101 // Test this row for both the receiver and for null.
1102 // Take any of three different outcomes:
1103 // 1. found receiver => increment count and goto done
1104 // 2. found null => keep looking for case 1, maybe allocate this cell
1105 // 3. found something else => keep looking for cases 1 and 2
1106 // Case 3 is handled by a recursive call.
1107 for (int row = start_row; row <= last_row; row++) {
1108 Label next_test;
1109 bool test_for_null_also = (row == start_row);
1110
1111 // See if the receiver is receiver[n].
1112 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row));
1113 test_mdp_data_at(mdp, recvr_offset, receiver,
1114 (test_for_null_also ? reg2 : noreg),
1115 next_test);
1116 // (Reg2 now contains the receiver from the CallData.)
1117
1118 // The receiver is receiver[n]. Increment count[n].
1119 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
1120 increment_mdp_data_at(mdp, count_offset);
1121 jmp(done);
1122 bind(next_test);
1123
1124 if (row == start_row) {
1125 Label found_null;
1126 // Failed the equality check on receiver[n]... Test for null.
1127 testptr(reg2, reg2);
1128 if (start_row == last_row) {
1129 // The only thing left to do is handle the null case.
1130 if (is_virtual_call) {
1131 jccb(Assembler::zero, found_null);
1132 // Receiver did not match any saved receiver and there is no empty row for it.
1133 // Increment total counter to indicate polymorphic case.
1134 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1135 jmp(done);
1136 bind(found_null);
1137 } else {
1138 jcc(Assembler::notZero, done);
1139 }
1140 break;
1141 }
1142 // Since null is rare, make it be the branch-taken case.
1143 jcc(Assembler::zero, found_null);
1144
1145 // Put all the "Case 3" tests here.
1146 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call);
1147
1148 // Found a null. Keep searching for a matching receiver,
1149 // but remember that this is an empty (unused) slot.
1150 bind(found_null);
1151 }
1152 }
1153
1154 // In the fall-through case, we found no matching receiver, but we
1155 // observed the receiver[start_row] is NULL.
1156
1157 // Fill in the receiver field and increment the count.
1158 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
1159 set_mdp_data_at(mdp, recvr_offset, receiver);
1160 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row));
1161 movptr(reg2, (int32_t)DataLayout::counter_increment);
1162 set_mdp_data_at(mdp, count_offset, reg2);
1163 if (start_row > 0) {
1164 jmp(done);
1165 }
1166 }
1167
1168 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
1169 Register mdp, Register reg2,
1170 bool is_virtual_call) {
1171 assert(ProfileInterpreter, "must be profiling");
1172 Label done;
1173
1174 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call);
1175
1176 bind (done);
1177 }
1178
1179 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) {
1180 if (ProfileInterpreter) {
1181 Label profile_continue;
1182 uint row;
1183
1184 // If no method data exists, go to profile_continue.
1185 test_method_data_pointer(mdp, profile_continue);
1186
1187 // Update the total ret count.
1188 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1189
1190 for (row = 0; row < RetData::row_limit(); row++) {
1191 Label next_test;
1192
1193 // See if return_bci is equal to bci[n]:
1194 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci,
1195 noreg, next_test);
1196
1197 // return_bci is equal to bci[n]. Increment the count.
1198 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
1199
1200 // The method data pointer needs to be updated to reflect the new target.
1201 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row)));
1202 jmp(profile_continue);
1203 bind(next_test);
1204 }
1205
1206 update_mdp_for_ret(return_bci);
1207
1208 bind (profile_continue);
1209 }
1210 }
1211
1212
1213 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
1214 if (ProfileInterpreter) {
1215 Label profile_continue;
1216
1217 // If no method data exists, go to profile_continue.
1218 test_method_data_pointer(mdp, profile_continue);
1219
1220 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());
1221
1222 // The method data pointer needs to be updated.
1223 int mdp_delta = in_bytes(BitData::bit_data_size());
1224 if (TypeProfileCasts) {
1225 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1226 }
1227 update_mdp_by_constant(mdp, mdp_delta);
1228
1229 bind (profile_continue);
1230 }
1231 }
1232
1233
1234 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) {
1235 if (ProfileInterpreter && TypeProfileCasts) {
1236 Label profile_continue;
1237
1238 // If no method data exists, go to profile_continue.
1239 test_method_data_pointer(mdp, profile_continue);
1240
1241 int count_offset = in_bytes(CounterData::count_offset());
1242 // Back up the address, since we have already bumped the mdp.
1243 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());
1244
1245 // *Decrement* the counter. We expect to see zero or small negatives.
1246 increment_mdp_data_at(mdp, count_offset, true);
1247
1248 bind (profile_continue);
1249 }
1250 }
1251
1252
1253 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2)
1254 {
1255 if (ProfileInterpreter) {
1256 Label profile_continue;
1257
1258 // If no method data exists, go to profile_continue.
1259 test_method_data_pointer(mdp, profile_continue);
1260
1261 // The method data pointer needs to be updated.
1262 int mdp_delta = in_bytes(BitData::bit_data_size());
1263 if (TypeProfileCasts) {
1264 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1265
1266 // Record the object type.
1267 record_klass_in_profile(klass, mdp, reg2, false);
1268 assert(reg2 == rdi, "we know how to fix this blown reg");
1269 restore_locals(); // Restore EDI
1270 }
1271 update_mdp_by_constant(mdp, mdp_delta);
1272
1273 bind(profile_continue);
1274 }
1275 }
1276
1277
1278 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
1279 if (ProfileInterpreter) {
1280 Label profile_continue;
1281
1282 // If no method data exists, go to profile_continue.
1283 test_method_data_pointer(mdp, profile_continue);
1284
1285 // Update the default case count
1286 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset()));
1287
1288 // The method data pointer needs to be updated.
1289 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset()));
1290
1291 bind (profile_continue);
1292 }
1293 }
1294
1295
1296 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) {
1297 if (ProfileInterpreter) {
1298 Label profile_continue;
1299
1300 // If no method data exists, go to profile_continue.
1301 test_method_data_pointer(mdp, profile_continue);
1302
1303 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes()
1304 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size()));
1305 // index is positive and so should have correct value if this code were
1306 // used on 64bits
1307 imulptr(index, reg2);
1308 addptr(index, in_bytes(MultiBranchData::case_array_offset()));
1309
1310 // Update the case count
1311 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset()));
1312
1313 // The method data pointer needs to be updated.
1314 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset()));
1315
1316 bind (profile_continue);
1317 }
1318 }
1319
1320 #endif // !CC_INTERP
1321
1322
1323
1324 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) {
1325 if (state == atos) MacroAssembler::verify_oop(reg);
1326 }
1327
1328
1329 #ifndef CC_INTERP
1330 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
1331 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth);
1332 }
1333
1334 #endif /* CC_INTERP */
1335
1336
1337 void InterpreterMacroAssembler::notify_method_entry() {
1338 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1339 // track stack depth. If it is possible to enter interp_only_mode we add
1340 // the code to check if the event should be sent.
1341 if (JvmtiExport::can_post_interpreter_events()) {
1342 Label L;
1343 get_thread(rcx);
1344 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1345 testl(rcx,rcx);
1346 jcc(Assembler::zero, L);
1347 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry));
1348 bind(L);
1349 }
1350
1351 {
1352 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1353 get_thread(rcx);
1354 get_method(rbx);
1355 call_VM_leaf(
1356 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx);
1357 }
1358
1359 // RedefineClasses() tracing support for obsolete method entry
1360 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
1361 get_thread(rcx);
1362 get_method(rbx);
1363 call_VM_leaf(
1364 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
1365 rcx, rbx);
1366 }
1367 }
1368
1369
1370 void InterpreterMacroAssembler::notify_method_exit(
1371 TosState state, NotifyMethodExitMode mode) {
1372 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1373 // track stack depth. If it is possible to enter interp_only_mode we add
1374 // the code to check if the event should be sent.
1375 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
1376 Label L;
1377 // Note: frame::interpreter_frame_result has a dependency on how the
1378 // method result is saved across the call to post_method_exit. If this
1379 // is changed then the interpreter_frame_result implementation will
1380 // need to be updated too.
1381
1382 // For c++ interpreter the result is always stored at a known location in the frame
1383 // template interpreter will leave it on the top of the stack.
1384 NOT_CC_INTERP(push(state);)
1385 get_thread(rcx);
1386 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1387 testl(rcx,rcx);
1388 jcc(Assembler::zero, L);
1389 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
1390 bind(L);
1391 NOT_CC_INTERP(pop(state);)
1392 }
1393
1394 {
1395 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1396 NOT_CC_INTERP(push(state));
1397 get_thread(rbx);
1398 get_method(rcx);
1399 call_VM_leaf(
1400 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
1401 rbx, rcx);
1402 NOT_CC_INTERP(pop(state));
1403 }
1404 }
1405
1406 // Jump if ((*counter_addr += increment) & mask) satisfies the condition.
1407 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr,
1408 int increment, int mask,
1409 Register scratch, bool preloaded,
1410 Condition cond, Label* where) {
1411 if (!preloaded) {
1412 movl(scratch, counter_addr);
1413 }
1414 incrementl(scratch, increment);
1415 movl(counter_addr, scratch);
1416 andl(scratch, mask);
1417 jcc(cond, *where);
1418 }