1 /*
2 * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, 2020, Red Hat Inc. All rights reserved.
4 * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 #include "asm/macroAssembler.inline.hpp"
28 #include "gc/shared/barrierSet.hpp"
29 #include "gc/shared/barrierSetAssembler.hpp"
30 #include "interp_masm_riscv.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "interpreter/interpreterRuntime.hpp"
33 #include "logging/log.hpp"
34 #include "oops/arrayOop.hpp"
35 #include "oops/constMethodFlags.hpp"
36 #include "oops/markWord.hpp"
37 #include "oops/method.hpp"
38 #include "oops/methodData.hpp"
39 #include "oops/inlineKlass.hpp"
40 #include "oops/resolvedFieldEntry.hpp"
41 #include "oops/resolvedIndyEntry.hpp"
42 #include "oops/resolvedMethodEntry.hpp"
43 #include "prims/jvmtiExport.hpp"
44 #include "prims/jvmtiThreadState.hpp"
45 #include "runtime/basicLock.hpp"
46 #include "runtime/frame.inline.hpp"
47 #include "runtime/javaThread.hpp"
48 #include "runtime/safepointMechanism.hpp"
49 #include "runtime/sharedRuntime.hpp"
50 #include "utilities/powerOfTwo.hpp"
51
52 void InterpreterMacroAssembler::narrow(Register result) {
53 // Get method->_constMethod->_result_type
54 ld(t0, Address(fp, frame::interpreter_frame_method_offset * wordSize));
55 ld(t0, Address(t0, Method::const_offset()));
56 lbu(t0, Address(t0, ConstMethod::result_type_offset()));
57
58 Label done, notBool, notByte, notChar;
59
60 // common case first
61 mv(t1, T_INT);
62 beq(t0, t1, done);
63
64 // mask integer result to narrower return type.
65 mv(t1, T_BOOLEAN);
66 bne(t0, t1, notBool);
67
68 andi(result, result, 0x1);
69 j(done);
70
71 bind(notBool);
72 mv(t1, T_BYTE);
73 bne(t0, t1, notByte);
74 sext(result, result, 8);
75 j(done);
76
77 bind(notByte);
78 mv(t1, T_CHAR);
79 bne(t0, t1, notChar);
80 zext(result, result, 16);
81 j(done);
82
83 bind(notChar);
84 sext(result, result, 16);
85
86 bind(done);
87 sext(result, result, 32);
88 }
89
90 void InterpreterMacroAssembler::jump_to_entry(address entry) {
91 assert(entry != nullptr, "Entry must have been generated by now");
92 j(entry);
93 }
94
95 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) {
96 if (JvmtiExport::can_pop_frame()) {
97 Label L;
98 // Initiate popframe handling only if it is not already being
99 // processed. If the flag has the popframe_processing bit set,
100 // it means that this code is called *during* popframe handling - we
101 // don't want to reenter.
102 // This method is only called just after the call into the vm in
103 // call_VM_base, so the arg registers are available.
104 lwu(t1, Address(xthread, JavaThread::popframe_condition_offset()));
105 test_bit(t0, t1, exact_log2(JavaThread::popframe_pending_bit));
106 beqz(t0, L);
107 test_bit(t0, t1, exact_log2(JavaThread::popframe_processing_bit));
108 bnez(t0, L);
109 // Call Interpreter::remove_activation_preserving_args_entry() to get the
110 // address of the same-named entrypoint in the generated interpreter code.
111 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry));
112 jr(x10);
113 bind(L);
114 }
115 }
116
117
118 void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
119 ld(x12, Address(xthread, JavaThread::jvmti_thread_state_offset()));
120 const Address tos_addr(x12, JvmtiThreadState::earlyret_tos_offset());
121 const Address oop_addr(x12, JvmtiThreadState::earlyret_oop_offset());
122 const Address val_addr(x12, JvmtiThreadState::earlyret_value_offset());
123 switch (state) {
124 case atos:
125 ld(x10, oop_addr);
126 sd(zr, oop_addr);
127 verify_oop(x10);
128 break;
129 case ltos:
130 ld(x10, val_addr);
131 break;
132 case btos: // fall through
133 case ztos: // fall through
134 case ctos: // fall through
135 case stos: // fall through
136 case itos:
137 lwu(x10, val_addr);
138 break;
139 case ftos:
140 flw(f10, val_addr);
141 break;
142 case dtos:
143 fld(f10, val_addr);
144 break;
145 case vtos:
146 /* nothing to do */
147 break;
148 default:
149 ShouldNotReachHere();
150 }
151 // Clean up tos value in the thread object
152 mv(t0, (int)ilgl);
153 sw(t0, tos_addr);
154 sw(zr, val_addr);
155 }
156
157
158 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) {
159 if (JvmtiExport::can_force_early_return()) {
160 Label L;
161 ld(t0, Address(xthread, JavaThread::jvmti_thread_state_offset()));
162 beqz(t0, L); // if thread->jvmti_thread_state() is null then exit
163
164 // Initiate earlyret handling only if it is not already being processed.
165 // If the flag has the earlyret_processing bit set, it means that this code
166 // is called *during* earlyret handling - we don't want to reenter.
167 lwu(t0, Address(t0, JvmtiThreadState::earlyret_state_offset()));
168 mv(t1, JvmtiThreadState::earlyret_pending);
169 bne(t0, t1, L);
170
171 // Call Interpreter::remove_activation_early_entry() to get the address of the
172 // same-named entrypoint in the generated interpreter code.
173 ld(t0, Address(xthread, JavaThread::jvmti_thread_state_offset()));
174 lwu(t0, Address(t0, JvmtiThreadState::earlyret_tos_offset()));
175 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), t0);
176 jr(x10);
177 bind(L);
178 }
179 }
180
181 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) {
182 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
183 lbu(t1, Address(xbcp, bcp_offset));
184 lbu(reg, Address(xbcp, bcp_offset + 1));
185 slli(t1, t1, 8);
186 add(reg, reg, t1);
187 }
188
189 void InterpreterMacroAssembler::get_dispatch() {
190 la(xdispatch, ExternalAddress((address)Interpreter::dispatch_table()));
191 }
192
193 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index,
194 Register tmp,
195 int bcp_offset,
196 size_t index_size) {
197 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
198 if (index_size == sizeof(u2)) {
199 load_short_misaligned(index, Address(xbcp, bcp_offset), tmp, false);
200 } else if (index_size == sizeof(u4)) {
201 load_int_misaligned(index, Address(xbcp, bcp_offset), tmp, false);
202 } else if (index_size == sizeof(u1)) {
203 load_unsigned_byte(index, Address(xbcp, bcp_offset));
204 } else {
205 ShouldNotReachHere();
206 }
207 }
208
209 // Load object from cpool->resolved_references(index)
210 void InterpreterMacroAssembler::load_resolved_reference_at_index(
211 Register result, Register index, Register tmp) {
212 assert_different_registers(result, index);
213
214 get_constant_pool(result);
215 // Load pointer for resolved_references[] objArray
216 ld(result, Address(result, ConstantPool::cache_offset()));
217 ld(result, Address(result, ConstantPoolCache::resolved_references_offset()));
218 resolve_oop_handle(result, tmp, t1);
219 // Add in the index
220 addi(index, index, arrayOopDesc::base_offset_in_bytes(T_OBJECT) >> LogBytesPerHeapOop);
221 shadd(result, index, result, index, LogBytesPerHeapOop);
222 load_heap_oop(result, Address(result, 0), tmp, t1);
223 }
224
225 void InterpreterMacroAssembler::load_resolved_klass_at_offset(
226 Register cpool, Register index, Register klass, Register temp) {
227 shadd(temp, index, cpool, temp, LogBytesPerWord);
228 lhu(temp, Address(temp, sizeof(ConstantPool))); // temp = resolved_klass_index
229 ld(klass, Address(cpool, ConstantPool::resolved_klasses_offset())); // klass = cpool->_resolved_klasses
230 shadd(klass, temp, klass, temp, LogBytesPerWord);
231 ld(klass, Address(klass, Array<Klass*>::base_offset_in_bytes()));
232 }
233
234 // Generate a subtype check: branch to ok_is_subtype if sub_klass is a
235 // subtype of super_klass.
236 //
237 // Args:
238 // x10: superklass
239 // Rsub_klass: subklass
240 //
241 // Kills:
242 // x12
243 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass,
244 Label& ok_is_subtype,
245 bool profile) {
246 assert(Rsub_klass != x10, "x10 holds superklass");
247 assert(Rsub_klass != x12, "x12 holds 2ndary super array length");
248
249 // Profile the not-null value's klass.
250 if (profile) {
251 profile_typecheck(x12, Rsub_klass); // blows x12
252 }
253
254 // Do the check.
255 check_klass_subtype(Rsub_klass, x10, x12, ok_is_subtype); // blows x12
256 }
257
258 // Java Expression Stack
259
260 void InterpreterMacroAssembler::pop_ptr(Register r) {
261 ld(r, Address(esp, 0));
262 addi(esp, esp, wordSize);
263 }
264
265 void InterpreterMacroAssembler::pop_i(Register r) {
266 lw(r, Address(esp, 0)); // lw do signed extended
267 addi(esp, esp, wordSize);
268 }
269
270 void InterpreterMacroAssembler::pop_l(Register r) {
271 ld(r, Address(esp, 0));
272 addi(esp, esp, 2 * Interpreter::stackElementSize);
273 }
274
275 void InterpreterMacroAssembler::push_ptr(Register r) {
276 subi(esp, esp, wordSize);
277 sd(r, Address(esp, 0));
278 }
279
280 void InterpreterMacroAssembler::push_i(Register r) {
281 subi(esp, esp, wordSize);
282 sext(r, r, 32);
283 sd(r, Address(esp, 0));
284 }
285
286 void InterpreterMacroAssembler::push_l(Register r) {
287 subi(esp, esp, 2 * wordSize);
288 sd(zr, Address(esp, wordSize));
289 sd(r, Address(esp));
290 }
291
292 void InterpreterMacroAssembler::pop_f(FloatRegister r) {
293 flw(r, Address(esp, 0));
294 addi(esp, esp, wordSize);
295 }
296
297 void InterpreterMacroAssembler::pop_d(FloatRegister r) {
298 fld(r, Address(esp, 0));
299 addi(esp, esp, 2 * Interpreter::stackElementSize);
300 }
301
302 void InterpreterMacroAssembler::push_f(FloatRegister r) {
303 subi(esp, esp, wordSize);
304 fsw(r, Address(esp, 0));
305 }
306
307 void InterpreterMacroAssembler::push_d(FloatRegister r) {
308 subi(esp, esp, 2 * wordSize);
309 fsd(r, Address(esp, 0));
310 }
311
312 void InterpreterMacroAssembler::pop(TosState state) {
313 switch (state) {
314 case atos:
315 pop_ptr();
316 verify_oop(x10);
317 break;
318 case btos: // fall through
319 case ztos: // fall through
320 case ctos: // fall through
321 case stos: // fall through
322 case itos:
323 pop_i();
324 break;
325 case ltos:
326 pop_l();
327 break;
328 case ftos:
329 pop_f();
330 break;
331 case dtos:
332 pop_d();
333 break;
334 case vtos:
335 /* nothing to do */
336 break;
337 default:
338 ShouldNotReachHere();
339 }
340 }
341
342 void InterpreterMacroAssembler::push(TosState state) {
343 switch (state) {
344 case atos:
345 verify_oop(x10);
346 push_ptr();
347 break;
348 case btos: // fall through
349 case ztos: // fall through
350 case ctos: // fall through
351 case stos: // fall through
352 case itos:
353 push_i();
354 break;
355 case ltos:
356 push_l();
357 break;
358 case ftos:
359 push_f();
360 break;
361 case dtos:
362 push_d();
363 break;
364 case vtos:
365 /* nothing to do */
366 break;
367 default:
368 ShouldNotReachHere();
369 }
370 }
371
372 // Helpers for swap and dup
373 void InterpreterMacroAssembler::load_ptr(int n, Register val) {
374 ld(val, Address(esp, Interpreter::expr_offset_in_bytes(n)));
375 }
376
377 void InterpreterMacroAssembler::store_ptr(int n, Register val) {
378 sd(val, Address(esp, Interpreter::expr_offset_in_bytes(n)));
379 }
380
381 void InterpreterMacroAssembler::load_float(Address src) {
382 flw(f10, src);
383 }
384
385 void InterpreterMacroAssembler::load_double(Address src) {
386 fld(f10, src);
387 }
388
389 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() {
390 // set sender sp
391 mv(x19_sender_sp, sp);
392 // record last_sp
393 sub(t0, esp, fp);
394 srai(t0, t0, Interpreter::logStackElementSize);
395 sd(t0, Address(fp, frame::interpreter_frame_last_sp_offset * wordSize));
396 }
397
398 // Jump to from_interpreted entry of a call unless single stepping is possible
399 // in this thread in which case we must call the i2i entry
400 void InterpreterMacroAssembler::jump_from_interpreted(Register method) {
401 prepare_to_jump_from_interpreted();
402 if (JvmtiExport::can_post_interpreter_events()) {
403 Label run_compiled_code;
404 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
405 // compiled code in threads for which the event is enabled. Check here for
406 // interp_only_mode if these events CAN be enabled.
407 lwu(t0, Address(xthread, JavaThread::interp_only_mode_offset()));
408 beqz(t0, run_compiled_code);
409 ld(t1, Address(method, Method::interpreter_entry_offset()));
410 jr(t1);
411 bind(run_compiled_code);
412 }
413
414 ld(t1, Address(method, Method::from_interpreted_offset()));
415 jr(t1);
416 }
417
418 // The following two routines provide a hook so that an implementation
419 // can schedule the dispatch in two parts. amd64 does not do this.
420 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
421 }
422
423 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
424 dispatch_next(state, step);
425 }
426
427 void InterpreterMacroAssembler::dispatch_base(TosState state,
428 address* table,
429 bool verifyoop,
430 bool generate_poll,
431 Register Rs) {
432 // Pay attention to the argument Rs, which is acquiesce in t0.
433 if (VerifyActivationFrameSize) {
434 Label L;
435 sub(t1, fp, esp);
436 int min_frame_size =
437 (frame::link_offset - frame::interpreter_frame_initial_sp_offset + frame::metadata_words) * wordSize;
438 sub(t1, t1, min_frame_size);
439 bgez(t1, L);
440 stop("broken stack frame");
441 bind(L);
442 }
443 if (verifyoop && state == atos) {
444 verify_oop(x10);
445 }
446
447 Label safepoint;
448 address* const safepoint_table = Interpreter::safept_table(state);
449 bool needs_thread_local_poll = generate_poll && table != safepoint_table;
450
451 if (needs_thread_local_poll) {
452 NOT_PRODUCT(block_comment("Thread-local Safepoint poll"));
453 ld(t1, Address(xthread, JavaThread::polling_word_offset()));
454 test_bit(t1, t1, exact_log2(SafepointMechanism::poll_bit()));
455 bnez(t1, safepoint);
456 }
457 if (table == Interpreter::dispatch_table(state)) {
458 mv(t1, Interpreter::distance_from_dispatch_table(state));
459 add(t1, Rs, t1);
460 shadd(t1, t1, xdispatch, t1, 3);
461 } else {
462 mv(t1, (address)table);
463 shadd(t1, Rs, t1, Rs, 3);
464 }
465 ld(t1, Address(t1));
466 jr(t1);
467
468 if (needs_thread_local_poll) {
469 bind(safepoint);
470 la(t1, ExternalAddress((address)safepoint_table));
471 shadd(t1, Rs, t1, Rs, 3);
472 ld(t1, Address(t1));
473 jr(t1);
474 }
475 }
476
477 void InterpreterMacroAssembler::dispatch_only(TosState state, bool generate_poll, Register Rs) {
478 dispatch_base(state, Interpreter::dispatch_table(state), true, generate_poll, Rs);
479 }
480
481 void InterpreterMacroAssembler::dispatch_only_normal(TosState state, Register Rs) {
482 dispatch_base(state, Interpreter::normal_table(state), true, false, Rs);
483 }
484
485 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state, Register Rs) {
486 dispatch_base(state, Interpreter::normal_table(state), false, false, Rs);
487 }
488
489 void InterpreterMacroAssembler::dispatch_next(TosState state, int step, bool generate_poll) {
490 // load next bytecode
491 load_unsigned_byte(t0, Address(xbcp, step));
492 add(xbcp, xbcp, step);
493 dispatch_base(state, Interpreter::dispatch_table(state), true, generate_poll);
494 }
495
496 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
497 // load current bytecode
498 lbu(t0, Address(xbcp, 0));
499 dispatch_base(state, table);
500 }
501
502 // remove activation
503 //
504 // Unlock the receiver if this is a synchronized method.
505 // Unlock any Java monitors from synchronized blocks.
506 // Apply stack watermark barrier.
507 // Notify JVMTI.
508 // Remove the activation from the stack.
509 //
510 // If there are locked Java monitors
511 // If throw_monitor_exception
512 // throws IllegalMonitorStateException
513 // Else if install_monitor_exception
514 // installs IllegalMonitorStateException
515 // Else
516 // no error processing
517 void InterpreterMacroAssembler::remove_activation(TosState state,
518 bool throw_monitor_exception,
519 bool install_monitor_exception,
520 bool notify_jvmdi) {
521 // Note: Registers x13 may be in use for the
522 // result check if synchronized method
523 Label unlocked, unlock, no_unlock;
524
525 #ifdef ASSERT
526 Label not_preempted;
527 ld(t0, Address(xthread, JavaThread::preempt_alternate_return_offset()));
528 beqz(t0, not_preempted);
529 stop("remove_activation: should not have alternate return address set");
530 bind(not_preempted);
531 #endif /* ASSERT */
532
533 // get the value of _do_not_unlock_if_synchronized into x13
534 const Address do_not_unlock_if_synchronized(xthread,
535 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
536 lbu(x13, do_not_unlock_if_synchronized);
537 sb(zr, do_not_unlock_if_synchronized); // reset the flag
538
539 // get method access flags
540 ld(x11, Address(fp, frame::interpreter_frame_method_offset * wordSize));
541 load_unsigned_short(x12, Address(x11, Method::access_flags_offset()));
542 test_bit(t0, x12, exact_log2(JVM_ACC_SYNCHRONIZED));
543 beqz(t0, unlocked);
544
545 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
546 // is set.
547 bnez(x13, no_unlock);
548
549 // unlock monitor
550 push(state); // save result
551
552 // BasicObjectLock will be first in list, since this is a
553 // synchronized method. However, need to check that the object has
554 // not been unlocked by an explicit monitorexit bytecode.
555 const Address monitor(fp, frame::interpreter_frame_initial_sp_offset *
556 wordSize - (int) sizeof(BasicObjectLock));
557 // We use c_rarg1 so that if we go slow path it will be the correct
558 // register for unlock_object to pass to VM directly
559 la(c_rarg1, monitor); // address of first monitor
560
561 ld(x10, Address(c_rarg1, BasicObjectLock::obj_offset()));
562 bnez(x10, unlock);
563
564 pop(state);
565 if (throw_monitor_exception) {
566 // Entry already unlocked, need to throw exception
567 call_VM(noreg, CAST_FROM_FN_PTR(address,
568 InterpreterRuntime::throw_illegal_monitor_state_exception));
569 should_not_reach_here();
570 } else {
571 // Monitor already unlocked during a stack unroll. If requested,
572 // install an illegal_monitor_state_exception. Continue with
573 // stack unrolling.
574 if (install_monitor_exception) {
575 call_VM(noreg, CAST_FROM_FN_PTR(address,
576 InterpreterRuntime::new_illegal_monitor_state_exception));
577 }
578 j(unlocked);
579 }
580
581 bind(unlock);
582 unlock_object(c_rarg1);
583 pop(state);
584
585 // Check that for block-structured locking (i.e., that all locked
586 // objects has been unlocked)
587 bind(unlocked);
588
589 // x10: Might contain return value
590
591 // Check that all monitors are unlocked
592 {
593 Label loop, exception, entry, restart;
594 const int entry_size = frame::interpreter_frame_monitor_size_in_bytes();
595 const Address monitor_block_top(
596 fp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
597 const Address monitor_block_bot(
598 fp, frame::interpreter_frame_initial_sp_offset * wordSize);
599
600 bind(restart);
601 // We use c_rarg1 so that if we go slow path it will be the correct
602 // register for unlock_object to pass to VM directly
603 ld(c_rarg1, monitor_block_top); // derelativize pointer
604 shadd(c_rarg1, c_rarg1, fp, c_rarg1, LogBytesPerWord);
605 // c_rarg1 points to current entry, starting with top-most entry
606
607 la(x9, monitor_block_bot); // points to word before bottom of
608 // monitor block
609
610 j(entry);
611
612 // Entry already locked, need to throw exception
613 bind(exception);
614
615 if (throw_monitor_exception) {
616 // Throw exception
617 MacroAssembler::call_VM(noreg,
618 CAST_FROM_FN_PTR(address, InterpreterRuntime::
619 throw_illegal_monitor_state_exception));
620
621 should_not_reach_here();
622 } else {
623 // Stack unrolling. Unlock object and install illegal_monitor_exception.
624 // Unlock does not block, so don't have to worry about the frame.
625 // We don't have to preserve c_rarg1 since we are going to throw an exception.
626
627 push(state);
628 unlock_object(c_rarg1);
629 pop(state);
630
631 if (install_monitor_exception) {
632 call_VM(noreg, CAST_FROM_FN_PTR(address,
633 InterpreterRuntime::
634 new_illegal_monitor_state_exception));
635 }
636
637 j(restart);
638 }
639
640 bind(loop);
641 // check if current entry is used
642 add(t0, c_rarg1, in_bytes(BasicObjectLock::obj_offset()));
643 ld(t0, Address(t0, 0));
644 bnez(t0, exception);
645
646 add(c_rarg1, c_rarg1, entry_size); // otherwise advance to next entry
647 bind(entry);
648 bne(c_rarg1, x9, loop); // check if bottom reached if not at bottom then check this entry
649 }
650
651 bind(no_unlock);
652
653 JFR_ONLY(enter_jfr_critical_section();)
654
655 // The below poll is for the stack watermark barrier. It allows fixing up frames lazily,
656 // that would normally not be safe to use. Such bad returns into unsafe territory of
657 // the stack, will call InterpreterRuntime::at_unwind.
658 Label slow_path;
659 Label fast_path;
660 safepoint_poll(slow_path, true /* at_return */, false /* in_nmethod */);
661 j(fast_path);
662
663 bind(slow_path);
664 push(state);
665 set_last_Java_frame(esp, fp, pc(), t0);
666 super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::at_unwind), xthread);
667 reset_last_Java_frame(true);
668 pop(state);
669 bind(fast_path);
670
671 // JVMTI support. Make sure the safepoint poll test is issued prior.
672 if (notify_jvmdi) {
673 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
674 } else {
675 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
676 }
677
678 // remove activation
679 // get sender esp
680 ld(t1,
681 Address(fp, frame::interpreter_frame_sender_sp_offset * wordSize));
682 if (StackReservedPages > 0) {
683 // testing if reserved zone needs to be re-enabled
684 Label no_reserved_zone_enabling;
685
686 // check if already enabled - if so no re-enabling needed
687 assert(sizeof(StackOverflow::StackGuardState) == 4, "unexpected size");
688 lw(t0, Address(xthread, JavaThread::stack_guard_state_offset()));
689 subw(t0, t0, StackOverflow::stack_guard_enabled);
690 beqz(t0, no_reserved_zone_enabling);
691
692 // look for an overflow into the stack reserved zone, i.e.
693 // interpreter_frame_sender_sp <= JavaThread::reserved_stack_activation
694 ld(t0, Address(xthread, JavaThread::reserved_stack_activation_offset()));
695 ble(t1, t0, no_reserved_zone_enabling);
696
697 JFR_ONLY(leave_jfr_critical_section();)
698
699 call_VM_leaf(
700 CAST_FROM_FN_PTR(address, SharedRuntime::enable_stack_reserved_zone), xthread);
701 call_VM(noreg, CAST_FROM_FN_PTR(address,
702 InterpreterRuntime::throw_delayed_StackOverflowError));
703 should_not_reach_here();
704
705 bind(no_reserved_zone_enabling);
706 }
707
708 // remove frame anchor
709 leave();
710
711 JFR_ONLY(leave_jfr_critical_section();)
712
713 // restore sender esp
714 mv(esp, t1);
715
716 // If we're returning to interpreted code we will shortly be
717 // adjusting SP to allow some space for ESP. If we're returning to
718 // compiled code the saved sender SP was saved in sender_sp, so this
719 // restores it.
720 andi(sp, esp, -16);
721 }
722
723 #if INCLUDE_JFR
724 void InterpreterMacroAssembler::enter_jfr_critical_section() {
725 const Address sampling_critical_section(xthread, in_bytes(SAMPLING_CRITICAL_SECTION_OFFSET_JFR));
726 mv(t0, true);
727 sb(t0, sampling_critical_section);
728 }
729
730 void InterpreterMacroAssembler::leave_jfr_critical_section() {
731 const Address sampling_critical_section(xthread, in_bytes(SAMPLING_CRITICAL_SECTION_OFFSET_JFR));
732 sb(zr, sampling_critical_section);
733 }
734 #endif // INCLUDE_JFR
735
736 // Lock object
737 //
738 // Args:
739 // c_rarg1: BasicObjectLock to be used for locking
740 //
741 // Kills:
742 // x10
743 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, c_rarg4, c_rarg5, .. (param regs)
744 // t0, t1 (temp regs)
745 void InterpreterMacroAssembler::lock_object(Register lock_reg)
746 {
747 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be c_rarg1");
748
749 const Register tmp = c_rarg2;
750 const Register obj_reg = c_rarg3; // Will contain the oop
751 const Register tmp2 = c_rarg4;
752 const Register tmp3 = c_rarg5;
753
754 // Load object pointer into obj_reg (c_rarg3)
755 ld(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset()));
756
757 Label done, slow_case;
758 fast_lock(lock_reg, obj_reg, tmp, tmp2, tmp3, slow_case);
759 j(done);
760
761 bind(slow_case);
762 // Call the runtime routine for slow case
763 call_VM_preemptable(noreg,
764 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter),
765 lock_reg);
766
767 bind(done);
768 }
769
770
771 // Unlocks an object. Used in monitorexit bytecode and
772 // remove_activation. Throws an IllegalMonitorException if object is
773 // not locked by current thread.
774 //
775 // Args:
776 // c_rarg1: BasicObjectLock for lock
777 //
778 // Kills:
779 // x10
780 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, c_rarg4, ... (param regs)
781 // t0, t1 (temp regs)
782 void InterpreterMacroAssembler::unlock_object(Register lock_reg)
783 {
784 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be rarg1");
785
786 const Register swap_reg = x10;
787 const Register header_reg = c_rarg2; // Will contain the old oopMark
788 const Register obj_reg = c_rarg3; // Will contain the oop
789 const Register tmp_reg = c_rarg4; // Temporary used by fast_unlock
790
791 save_bcp(); // Save in case of exception
792
793 // Load oop into obj_reg (c_rarg3)
794 ld(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset()));
795
796 // Free entry
797 sd(zr, Address(lock_reg, BasicObjectLock::obj_offset()));
798
799 Label done, slow_case;
800 fast_unlock(obj_reg, header_reg, swap_reg, tmp_reg, slow_case);
801 j(done);
802
803 bind(slow_case);
804 // Call the runtime routine for slow case.
805 sd(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset())); // restore obj
806 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
807
808 bind(done);
809 restore_bcp();
810 }
811
812
813 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp,
814 Label& zero_continue) {
815 assert(ProfileInterpreter, "must be profiling interpreter");
816 ld(mdp, Address(fp, frame::interpreter_frame_mdp_offset * wordSize));
817 beqz(mdp, zero_continue);
818 }
819
820 // Set the method data pointer for the current bcp.
821 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
822 assert(ProfileInterpreter, "must be profiling interpreter");
823 Label set_mdp;
824 push_reg(RegSet::of(x10, x11), sp); // save x10, x11
825
826 // Test MDO to avoid the call if it is null.
827 ld(x10, Address(xmethod, in_bytes(Method::method_data_offset())));
828 beqz(x10, set_mdp);
829 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), xmethod, xbcp);
830 // x10: mdi
831 // mdo is guaranteed to be non-zero here, we checked for it before the call.
832 ld(x11, Address(xmethod, in_bytes(Method::method_data_offset())));
833 la(x11, Address(x11, in_bytes(MethodData::data_offset())));
834 add(x10, x11, x10);
835 sd(x10, Address(fp, frame::interpreter_frame_mdp_offset * wordSize));
836 bind(set_mdp);
837 pop_reg(RegSet::of(x10, x11), sp);
838 }
839
840 void InterpreterMacroAssembler::verify_method_data_pointer() {
841 assert(ProfileInterpreter, "must be profiling interpreter");
842 #ifdef ASSERT
843 Label verify_continue;
844 subi(sp, sp, 4 * wordSize);
845 sd(x10, Address(sp, 0));
846 sd(x11, Address(sp, wordSize));
847 sd(x12, Address(sp, 2 * wordSize));
848 sd(x13, Address(sp, 3 * wordSize));
849 test_method_data_pointer(x13, verify_continue); // If mdp is zero, continue
850 get_method(x11);
851
852 // If the mdp is valid, it will point to a DataLayout header which is
853 // consistent with the bcp. The converse is highly probable also.
854 lh(x12, Address(x13, in_bytes(DataLayout::bci_offset())));
855 ld(t0, Address(x11, Method::const_offset()));
856 add(x12, x12, t0);
857 la(x12, Address(x12, ConstMethod::codes_offset()));
858 beq(x12, xbcp, verify_continue);
859 // x10: method
860 // xbcp: bcp // xbcp == 22
861 // x13: mdp
862 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp),
863 x11, xbcp, x13);
864 bind(verify_continue);
865 ld(x10, Address(sp, 0));
866 ld(x11, Address(sp, wordSize));
867 ld(x12, Address(sp, 2 * wordSize));
868 ld(x13, Address(sp, 3 * wordSize));
869 addi(sp, sp, 4 * wordSize);
870 #endif // ASSERT
871 }
872
873
874 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in,
875 int constant,
876 Register value) {
877 assert(ProfileInterpreter, "must be profiling interpreter");
878 Address data(mdp_in, constant);
879 sd(value, data);
880 }
881
882
883 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
884 int constant) {
885 increment_mdp_data_at(mdp_in, noreg, constant);
886 }
887
888 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
889 Register index,
890 int constant) {
891 assert(ProfileInterpreter, "must be profiling interpreter");
892
893 assert_different_registers(t1, t0, mdp_in, index);
894
895 Address addr1(mdp_in, constant);
896 Address addr2(t1, 0);
897 Address &addr = addr1;
898 if (index != noreg) {
899 la(t1, addr1);
900 add(t1, t1, index);
901 addr = addr2;
902 }
903
904 ld(t0, addr);
905 addi(t0, t0, DataLayout::counter_increment);
906 sd(t0, addr);
907 }
908
909 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in,
910 int flag_byte_constant) {
911 assert(ProfileInterpreter, "must be profiling interpreter");
912 int flags_offset = in_bytes(DataLayout::flags_offset());
913 // Set the flag
914 lbu(t1, Address(mdp_in, flags_offset));
915 ori(t1, t1, flag_byte_constant);
916 sb(t1, Address(mdp_in, flags_offset));
917 }
918
919
920 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
921 int offset,
922 Register value,
923 Register test_value_out,
924 Label& not_equal_continue) {
925 assert(ProfileInterpreter, "must be profiling interpreter");
926 if (test_value_out == noreg) {
927 ld(t1, Address(mdp_in, offset));
928 bne(value, t1, not_equal_continue);
929 } else {
930 // Put the test value into a register, so caller can use it:
931 ld(test_value_out, Address(mdp_in, offset));
932 bne(value, test_value_out, not_equal_continue);
933 }
934 }
935
936
937 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in,
938 int offset_of_disp) {
939 assert(ProfileInterpreter, "must be profiling interpreter");
940 ld(t1, Address(mdp_in, offset_of_disp));
941 add(mdp_in, mdp_in, t1);
942 sd(mdp_in, Address(fp, frame::interpreter_frame_mdp_offset * wordSize));
943 }
944
945 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in,
946 Register reg,
947 int offset_of_disp) {
948 assert(ProfileInterpreter, "must be profiling interpreter");
949 add(t1, mdp_in, reg);
950 ld(t1, Address(t1, offset_of_disp));
951 add(mdp_in, mdp_in, t1);
952 sd(mdp_in, Address(fp, frame::interpreter_frame_mdp_offset * wordSize));
953 }
954
955
956 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in,
957 int constant) {
958 assert(ProfileInterpreter, "must be profiling interpreter");
959 add(mdp_in, mdp_in, (unsigned)constant);
960 sd(mdp_in, Address(fp, frame::interpreter_frame_mdp_offset * wordSize));
961 }
962
963
964 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
965 assert(ProfileInterpreter, "must be profiling interpreter");
966
967 // save/restore across call_VM
968 subi(sp, sp, 2 * wordSize);
969 sd(zr, Address(sp, 0));
970 sd(return_bci, Address(sp, wordSize));
971 call_VM(noreg,
972 CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret),
973 return_bci);
974 ld(zr, Address(sp, 0));
975 ld(return_bci, Address(sp, wordSize));
976 addi(sp, sp, 2 * wordSize);
977 }
978
979 void InterpreterMacroAssembler::profile_taken_branch(Register mdp) {
980 if (ProfileInterpreter) {
981 Label profile_continue;
982
983 // If no method data exists, go to profile_continue.
984 test_method_data_pointer(mdp, profile_continue);
985
986 // We are taking a branch. Increment the taken count.
987 increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
988
989 // The method data pointer needs to be updated to reflect the new target.
990 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
991 bind(profile_continue);
992 }
993 }
994
995 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp, bool acmp) {
996 if (ProfileInterpreter) {
997 Label profile_continue;
998
999 // If no method data exists, go to profile_continue.
1000 test_method_data_pointer(mdp, profile_continue);
1001
1002 // We are not taking a branch. Increment the not taken count.
1003 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
1004
1005 // The method data pointer needs to be updated to correspond to
1006 // the next bytecode
1007 update_mdp_by_constant(mdp, acmp ? in_bytes(ACmpData::acmp_data_size()) : in_bytes(BranchData::branch_data_size()));
1008 bind(profile_continue);
1009 }
1010 }
1011
1012 void InterpreterMacroAssembler::profile_call(Register mdp) {
1013 if (ProfileInterpreter) {
1014 Label profile_continue;
1015
1016 // If no method data exists, go to profile_continue.
1017 test_method_data_pointer(mdp, profile_continue);
1018
1019 // We are making a call. Increment the count.
1020 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1021
1022 // The method data pointer needs to be updated to reflect the new target.
1023 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
1024 bind(profile_continue);
1025 }
1026 }
1027
1028 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
1029 if (ProfileInterpreter) {
1030 Label profile_continue;
1031
1032 // If no method data exists, go to profile_continue.
1033 test_method_data_pointer(mdp, profile_continue);
1034
1035 // We are making a call. Increment the count.
1036 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1037
1038 // The method data pointer needs to be updated to reflect the new target.
1039 update_mdp_by_constant(mdp,
1040 in_bytes(VirtualCallData::
1041 virtual_call_data_size()));
1042 bind(profile_continue);
1043 }
1044 }
1045
1046
1047 void InterpreterMacroAssembler::profile_virtual_call(Register receiver,
1048 Register mdp) {
1049 if (ProfileInterpreter) {
1050 Label profile_continue;
1051
1052 // If no method data exists, go to profile_continue.
1053 test_method_data_pointer(mdp, profile_continue);
1054
1055 // Record the receiver type.
1056 profile_receiver_type(receiver, mdp, 0);
1057
1058 // The method data pointer needs to be updated to reflect the new target.
1059
1060 update_mdp_by_constant(mdp,
1061 in_bytes(VirtualCallData::
1062 virtual_call_data_size()));
1063 bind(profile_continue);
1064 }
1065 }
1066
1067 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) {
1068 if (ProfileInterpreter) {
1069 Label profile_continue;
1070
1071 // If no method data exists, go to profile_continue.
1072 test_method_data_pointer(mdp, profile_continue);
1073
1074 // Update the total ret count.
1075 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1076
1077 for (uint row = 0; row < RetData::row_limit(); row++) {
1078 Label next_test;
1079
1080 // See if return_bci is equal to bci[n]:
1081 test_mdp_data_at(mdp,
1082 in_bytes(RetData::bci_offset(row)),
1083 return_bci, noreg,
1084 next_test);
1085
1086 // return_bci is equal to bci[n]. Increment the count.
1087 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
1088
1089 // The method data pointer needs to be updated to reflect the new target.
1090 update_mdp_by_offset(mdp,
1091 in_bytes(RetData::bci_displacement_offset(row)));
1092 j(profile_continue);
1093 bind(next_test);
1094 }
1095
1096 update_mdp_for_ret(return_bci);
1097
1098 bind(profile_continue);
1099 }
1100 }
1101
1102 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
1103 if (ProfileInterpreter) {
1104 Label profile_continue;
1105
1106 // If no method data exists, go to profile_continue.
1107 test_method_data_pointer(mdp, profile_continue);
1108
1109 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());
1110
1111 // The method data pointer needs to be updated.
1112 int mdp_delta = in_bytes(BitData::bit_data_size());
1113 if (TypeProfileCasts) {
1114 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1115 }
1116 update_mdp_by_constant(mdp, mdp_delta);
1117
1118 bind(profile_continue);
1119 }
1120 }
1121
1122 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass) {
1123 if (ProfileInterpreter) {
1124 Label profile_continue;
1125
1126 // If no method data exists, go to profile_continue.
1127 test_method_data_pointer(mdp, profile_continue);
1128
1129 // The method data pointer needs to be updated.
1130 int mdp_delta = in_bytes(BitData::bit_data_size());
1131 if (TypeProfileCasts) {
1132 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1133
1134 // Record the object type.
1135 profile_receiver_type(klass, mdp, 0);
1136 }
1137 update_mdp_by_constant(mdp, mdp_delta);
1138
1139 bind(profile_continue);
1140 }
1141 }
1142
1143 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
1144 if (ProfileInterpreter) {
1145 Label profile_continue;
1146
1147 // If no method data exists, go to profile_continue.
1148 test_method_data_pointer(mdp, profile_continue);
1149
1150 // Update the default case count
1151 increment_mdp_data_at(mdp,
1152 in_bytes(MultiBranchData::default_count_offset()));
1153
1154 // The method data pointer needs to be updated.
1155 update_mdp_by_offset(mdp,
1156 in_bytes(MultiBranchData::
1157 default_displacement_offset()));
1158
1159 bind(profile_continue);
1160 }
1161 }
1162
1163 void InterpreterMacroAssembler::profile_switch_case(Register index,
1164 Register mdp,
1165 Register reg2) {
1166 if (ProfileInterpreter) {
1167 Label profile_continue;
1168
1169 // If no method data exists, go to profile_continue.
1170 test_method_data_pointer(mdp, profile_continue);
1171
1172 // Build the base (index * per_case_size_in_bytes()) +
1173 // case_array_offset_in_bytes()
1174 mv(reg2, in_bytes(MultiBranchData::per_case_size()));
1175 mv(t0, in_bytes(MultiBranchData::case_array_offset()));
1176 Assembler::mul(index, index, reg2);
1177 Assembler::add(index, index, t0);
1178
1179 // Update the case count
1180 increment_mdp_data_at(mdp,
1181 index,
1182 in_bytes(MultiBranchData::relative_count_offset()));
1183
1184 // The method data pointer need to be updated.
1185 update_mdp_by_offset(mdp,
1186 index,
1187 in_bytes(MultiBranchData::
1188 relative_displacement_offset()));
1189
1190 bind(profile_continue);
1191 }
1192 }
1193
1194 template <class ArrayData> void InterpreterMacroAssembler::profile_array_type(Register mdp,
1195 Register array,
1196 Register tmp) {
1197 if (ProfileInterpreter) {
1198 Label profile_continue;
1199
1200 // If no method data exists, go to profile_continue.
1201 test_method_data_pointer(mdp, profile_continue);
1202
1203 mv(tmp, array);
1204 profile_obj_type(tmp, Address(mdp, in_bytes(ArrayData::array_offset())), t1);
1205
1206 Label not_flat;
1207 test_non_flat_array_oop(array, tmp, not_flat);
1208
1209 set_mdp_flag_at(mdp, ArrayData::flat_array_byte_constant());
1210
1211 bind(not_flat);
1212
1213 Label not_null_free;
1214 test_non_null_free_array_oop(array, tmp, not_null_free);
1215
1216 set_mdp_flag_at(mdp, ArrayData::null_free_array_byte_constant());
1217
1218 bind(not_null_free);
1219
1220 bind(profile_continue);
1221 }
1222 }
1223
1224 template void InterpreterMacroAssembler::profile_array_type<ArrayLoadData>(Register mdp,
1225 Register array,
1226 Register tmp);
1227 template void InterpreterMacroAssembler::profile_array_type<ArrayStoreData>(Register mdp,
1228 Register array,
1229 Register tmp);
1230
1231 void InterpreterMacroAssembler::profile_multiple_element_types(Register mdp, Register element, Register tmp, const Register tmp2) {
1232 if (ProfileInterpreter) {
1233 Label profile_continue;
1234
1235 // If no method data exists, go to profile_continue.
1236 test_method_data_pointer(mdp, profile_continue);
1237
1238 Label done, update;
1239 bnez(element, update);
1240 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());
1241 j(done);
1242
1243 bind(update);
1244 load_klass(tmp, element);
1245
1246 // Record the object type.
1247 profile_receiver_type(tmp, mdp, 0);
1248
1249 bind(done);
1250
1251 // The method data pointer needs to be updated.
1252 update_mdp_by_constant(mdp, in_bytes(ArrayStoreData::array_store_data_size()));
1253
1254 bind(profile_continue);
1255 }
1256 }
1257
1258 void InterpreterMacroAssembler::profile_element_type(Register mdp,
1259 Register element,
1260 Register tmp) {
1261 if (ProfileInterpreter) {
1262 Label profile_continue;
1263
1264 // If no method data exists, go to profile_continue.
1265 test_method_data_pointer(mdp, profile_continue);
1266
1267 mv(tmp, element);
1268 profile_obj_type(tmp, Address(mdp, in_bytes(ArrayLoadData::element_offset())), t1);
1269
1270 // The method data pointer needs to be updated.
1271 update_mdp_by_constant(mdp, in_bytes(ArrayLoadData::array_load_data_size()));
1272
1273 bind(profile_continue);
1274 }
1275 }
1276
1277 void InterpreterMacroAssembler::profile_acmp(Register mdp,
1278 Register left,
1279 Register right,
1280 Register tmp) {
1281 if (ProfileInterpreter) {
1282 Label profile_continue;
1283
1284 // If no method data exists, go to profile_continue.
1285 test_method_data_pointer(mdp, profile_continue);
1286
1287 mv(tmp, left);
1288 profile_obj_type(tmp, Address(mdp, in_bytes(ACmpData::left_offset())), t1);
1289
1290 Label left_not_inline_type;
1291 test_oop_is_not_inline_type(left, tmp, left_not_inline_type);
1292 set_mdp_flag_at(mdp, ACmpData::left_inline_type_byte_constant());
1293 bind(left_not_inline_type);
1294
1295 mv(tmp, right);
1296 profile_obj_type(tmp, Address(mdp, in_bytes(ACmpData::right_offset())), t1);
1297
1298 Label right_not_inline_type;
1299 test_oop_is_not_inline_type(right, tmp, right_not_inline_type);
1300 set_mdp_flag_at(mdp, ACmpData::right_inline_type_byte_constant());
1301 bind(right_not_inline_type);
1302
1303 bind(profile_continue);
1304 }
1305 }
1306
1307
1308 void InterpreterMacroAssembler::notify_method_entry() {
1309 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1310 // track stack depth. If it is possible to enter interp_only_mode we add
1311 // the code to check if the event should be sent.
1312 if (JvmtiExport::can_post_interpreter_events()) {
1313 Label L;
1314 lwu(x13, Address(xthread, JavaThread::interp_only_mode_offset()));
1315 beqz(x13, L);
1316 call_VM(noreg, CAST_FROM_FN_PTR(address,
1317 InterpreterRuntime::post_method_entry));
1318 bind(L);
1319 }
1320
1321 if (DTraceMethodProbes) {
1322 get_method(c_rarg1);
1323 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry),
1324 xthread, c_rarg1);
1325 }
1326
1327 // RedefineClasses() tracing support for obsolete method entry
1328 if (log_is_enabled(Trace, redefine, class, obsolete)) {
1329 get_method(c_rarg1);
1330 call_VM_leaf(
1331 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
1332 xthread, c_rarg1);
1333 }
1334 }
1335
1336
1337 void InterpreterMacroAssembler::notify_method_exit(
1338 TosState state, NotifyMethodExitMode mode) {
1339 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1340 // track stack depth. If it is possible to enter interp_only_mode we add
1341 // the code to check if the event should be sent.
1342 if (mode == NotifyJVMTI && (JvmtiExport::can_post_interpreter_events() || JvmtiExport::can_post_frame_pop())) {
1343 Label L;
1344 // Note: frame::interpreter_frame_result has a dependency on how the
1345 // method result is saved across the call to post_method_exit. If this
1346 // is changed then the interpreter_frame_result implementation will
1347 // need to be updated too.
1348
1349 // template interpreter will leave the result on the top of the stack.
1350 push(state);
1351
1352 ld(t1, Address(xthread, JavaThread::jvmti_thread_state_offset()));
1353 beqz(t1, L); // if (thread->jvmti_thread_state() == nullptr) exit;
1354
1355 lwu(t1, Address(t1, JvmtiThreadState::frame_pop_cnt_offset()));
1356 lwu(t0, Address(xthread, JavaThread::interp_only_mode_offset()));
1357 orr(t0, t0, t1);
1358 beqz(t0, L);
1359
1360 call_VM(noreg,
1361 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
1362 bind(L);
1363 pop(state);
1364 }
1365
1366 if (DTraceMethodProbes) {
1367 push(state);
1368 get_method(c_rarg1);
1369 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
1370 xthread, c_rarg1);
1371 pop(state);
1372 }
1373 }
1374
1375
1376 // Jump if ((*counter_addr += increment) & mask) satisfies the condition.
1377 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr,
1378 int increment, Address mask,
1379 Register tmp1, Register tmp2,
1380 bool preloaded, Label* where) {
1381 Label done;
1382 if (!preloaded) {
1383 lwu(tmp1, counter_addr);
1384 }
1385 add(tmp1, tmp1, increment);
1386 sw(tmp1, counter_addr);
1387 lwu(tmp2, mask);
1388 andr(tmp1, tmp1, tmp2);
1389 bnez(tmp1, done);
1390 j(*where); // offset is too large so we have to use j instead of beqz here
1391 bind(done);
1392 }
1393
1394 void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point,
1395 int number_of_arguments) {
1396 // interpreter specific
1397 //
1398 // Note: No need to save/restore xbcp & xlocals pointer since these
1399 // are callee saved registers and no blocking/ GC can happen
1400 // in leaf calls.
1401 #ifdef ASSERT
1402 {
1403 Label L;
1404 ld(t0, Address(fp, frame::interpreter_frame_last_sp_offset * wordSize));
1405 beqz(t0, L);
1406 stop("InterpreterMacroAssembler::call_VM_leaf_base:"
1407 " last_sp isn't null");
1408 bind(L);
1409 }
1410 #endif /* ASSERT */
1411 // super call
1412 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments);
1413 }
1414
1415 void InterpreterMacroAssembler::call_VM_base(Register oop_result,
1416 Register java_thread,
1417 Register last_java_sp,
1418 Label* return_pc,
1419 address entry_point,
1420 int number_of_arguments,
1421 bool check_exceptions) {
1422 // interpreter specific
1423 //
1424 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't
1425 // really make a difference for these runtime calls, since they are
1426 // slow anyway. Btw., bcp must be saved/restored since it may change
1427 // due to GC.
1428 save_bcp();
1429 #ifdef ASSERT
1430 {
1431 Label L;
1432 ld(t0, Address(fp, frame::interpreter_frame_last_sp_offset * wordSize));
1433 beqz(t0, L);
1434 stop("InterpreterMacroAssembler::call_VM_base:"
1435 " last_sp isn't null");
1436 bind(L);
1437 }
1438 #endif /* ASSERT */
1439 // super call
1440 MacroAssembler::call_VM_base(oop_result, noreg, last_java_sp,
1441 return_pc, entry_point,
1442 number_of_arguments, check_exceptions);
1443 // interpreter specific
1444 restore_bcp();
1445 restore_locals();
1446 }
1447
1448 void InterpreterMacroAssembler::call_VM_preemptable_helper(Register oop_result,
1449 address entry_point,
1450 int number_of_arguments,
1451 bool check_exceptions) {
1452 assert(InterpreterRuntime::is_preemptable_call(entry_point),
1453 "VM call not preemptable, should use call_VM()");
1454 Label resume_pc, not_preempted;
1455
1456 #ifdef ASSERT
1457 {
1458 Label L1, L2;
1459 ld(t0, Address(xthread, JavaThread::preempt_alternate_return_offset()));
1460 beqz(t0, L1);
1461 stop("call_VM_preemptable_helper: Should not have alternate return address set");
1462 bind(L1);
1463 // We check this counter in patch_return_pc_with_preempt_stub() during freeze.
1464 incrementw(Address(xthread, JavaThread::interp_at_preemptable_vmcall_cnt_offset()));
1465 lw(t0, Address(xthread, JavaThread::interp_at_preemptable_vmcall_cnt_offset()));
1466 bgtz(t0, L2);
1467 stop("call_VM_preemptable_helper: should be > 0");
1468 bind(L2);
1469 }
1470 #endif /* ASSERT */
1471
1472 // Force freeze slow path.
1473 push_cont_fastpath();
1474
1475 // Make VM call. In case of preemption set last_pc to the one we want to resume to.
1476 // Note: call_VM_base will use resume_pc label to set last_Java_pc.
1477 call_VM_base(noreg, noreg, noreg, &resume_pc, entry_point, number_of_arguments, false /*check_exceptions*/);
1478
1479 pop_cont_fastpath();
1480
1481 #ifdef ASSERT
1482 {
1483 Label L;
1484 decrementw(Address(xthread, JavaThread::interp_at_preemptable_vmcall_cnt_offset()));
1485 lw(t0, Address(xthread, JavaThread::interp_at_preemptable_vmcall_cnt_offset()));
1486 bgez(t0, L);
1487 stop("call_VM_preemptable_helper: should be >= 0");
1488 bind(L);
1489 }
1490 #endif /* ASSERT */
1491
1492 // Check if preempted.
1493 ld(t1, Address(xthread, JavaThread::preempt_alternate_return_offset()));
1494 beqz(t1, not_preempted);
1495 sd(zr, Address(xthread, JavaThread::preempt_alternate_return_offset()));
1496 jr(t1);
1497
1498 // In case of preemption, this is where we will resume once we finally acquire the monitor.
1499 bind(resume_pc);
1500 restore_after_resume(false /* is_native */);
1501
1502 bind(not_preempted);
1503 if (check_exceptions) {
1504 // check for pending exceptions
1505 ld(t0, Address(xthread, in_bytes(Thread::pending_exception_offset())));
1506 Label ok;
1507 beqz(t0, ok);
1508 la(t1, RuntimeAddress(StubRoutines::forward_exception_entry()));
1509 jr(t1);
1510 bind(ok);
1511 }
1512
1513 // get oop result if there is one and reset the value in the thread
1514 if (oop_result->is_valid()) {
1515 get_vm_result_oop(oop_result, xthread);
1516 }
1517 }
1518
1519 static void pass_arg1(MacroAssembler* masm, Register arg) {
1520 if (c_rarg1 != arg) {
1521 masm->mv(c_rarg1, arg);
1522 }
1523 }
1524
1525 static void pass_arg2(MacroAssembler* masm, Register arg) {
1526 if (c_rarg2 != arg) {
1527 masm->mv(c_rarg2, arg);
1528 }
1529 }
1530
1531 void InterpreterMacroAssembler::call_VM_preemptable(Register oop_result,
1532 address entry_point,
1533 Register arg_1,
1534 bool check_exceptions) {
1535 pass_arg1(this, arg_1);
1536 call_VM_preemptable_helper(oop_result, entry_point, 1, check_exceptions);
1537 }
1538
1539 void InterpreterMacroAssembler::call_VM_preemptable(Register oop_result,
1540 address entry_point,
1541 Register arg_1,
1542 Register arg_2,
1543 bool check_exceptions) {
1544 LP64_ONLY(assert_different_registers(arg_1, c_rarg2));
1545 pass_arg2(this, arg_2);
1546 pass_arg1(this, arg_1);
1547 call_VM_preemptable_helper(oop_result, entry_point, 2, check_exceptions);
1548 }
1549
1550 void InterpreterMacroAssembler::restore_after_resume(bool is_native) {
1551 la(t1, ExternalAddress(Interpreter::cont_resume_interpreter_adapter()));
1552 jalr(t1);
1553 if (is_native) {
1554 // On resume we need to set up stack as expected
1555 push(dtos);
1556 push(ltos);
1557 }
1558 }
1559
1560 void InterpreterMacroAssembler::profile_obj_type(Register obj, const Address& mdo_addr, Register tmp) {
1561 assert_different_registers(obj, tmp, t0, mdo_addr.base());
1562 Label update, next, none;
1563
1564 verify_oop(obj);
1565
1566 bnez(obj, update);
1567 orptr(mdo_addr, TypeEntries::null_seen, t0, tmp);
1568 j(next);
1569
1570 bind(update);
1571 load_klass(obj, obj);
1572
1573 ld(tmp, mdo_addr);
1574 xorr(obj, obj, tmp);
1575 andi(t0, obj, TypeEntries::type_klass_mask);
1576 beqz(t0, next); // klass seen before, nothing to
1577 // do. The unknown bit may have been
1578 // set already but no need to check.
1579
1580 test_bit(t0, obj, exact_log2(TypeEntries::type_unknown));
1581 bnez(t0, next);
1582 // already unknown. Nothing to do anymore.
1583
1584 beqz(tmp, none);
1585 mv(t0, (u1)TypeEntries::null_seen);
1586 beq(tmp, t0, none);
1587 // There is a chance that the checks above
1588 // fail if another thread has just set the
1589 // profiling to this obj's klass
1590 xorr(obj, obj, tmp); // get back original value before XOR
1591 ld(tmp, mdo_addr);
1592 xorr(obj, obj, tmp);
1593 andi(t0, obj, TypeEntries::type_klass_mask);
1594 beqz(t0, next);
1595
1596 // different than before. Cannot keep accurate profile.
1597 orptr(mdo_addr, TypeEntries::type_unknown, t0, tmp);
1598 j(next);
1599
1600 bind(none);
1601 // first time here. Set profile type.
1602 sd(obj, mdo_addr);
1603 #ifdef ASSERT
1604 andi(obj, obj, TypeEntries::type_mask);
1605 verify_klass_ptr(obj);
1606 #endif
1607
1608 bind(next);
1609 }
1610
1611 void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual) {
1612 if (!ProfileInterpreter) {
1613 return;
1614 }
1615
1616 if (MethodData::profile_arguments() || MethodData::profile_return()) {
1617 Label profile_continue;
1618
1619 test_method_data_pointer(mdp, profile_continue);
1620
1621 int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size());
1622
1623 lbu(t0, Address(mdp, in_bytes(DataLayout::tag_offset()) - off_to_start));
1624 if (is_virtual) {
1625 mv(tmp, (u1)DataLayout::virtual_call_type_data_tag);
1626 bne(t0, tmp, profile_continue);
1627 } else {
1628 mv(tmp, (u1)DataLayout::call_type_data_tag);
1629 bne(t0, tmp, profile_continue);
1630 }
1631
1632 // calculate slot step
1633 static int stack_slot_offset0 = in_bytes(TypeEntriesAtCall::stack_slot_offset(0));
1634 static int slot_step = in_bytes(TypeEntriesAtCall::stack_slot_offset(1)) - stack_slot_offset0;
1635
1636 // calculate type step
1637 static int argument_type_offset0 = in_bytes(TypeEntriesAtCall::argument_type_offset(0));
1638 static int type_step = in_bytes(TypeEntriesAtCall::argument_type_offset(1)) - argument_type_offset0;
1639
1640 if (MethodData::profile_arguments()) {
1641 Label done, loop, loopEnd, profileArgument, profileReturnType;
1642 RegSet pushed_registers;
1643 pushed_registers += x15;
1644 pushed_registers += x16;
1645 pushed_registers += x17;
1646 Register mdo_addr = x15;
1647 Register index = x16;
1648 Register off_to_args = x17;
1649 push_reg(pushed_registers, sp);
1650
1651 mv(off_to_args, in_bytes(TypeEntriesAtCall::args_data_offset()));
1652 mv(t0, TypeProfileArgsLimit);
1653 beqz(t0, loopEnd);
1654
1655 mv(index, zr); // index < TypeProfileArgsLimit
1656 bind(loop);
1657 bgtz(index, profileReturnType);
1658 mv(t0, (int)MethodData::profile_return());
1659 beqz(t0, profileArgument); // (index > 0 || MethodData::profile_return()) == false
1660 bind(profileReturnType);
1661 // If return value type is profiled we may have no argument to profile
1662 ld(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())));
1663 mv(t1, - TypeStackSlotEntries::per_arg_count());
1664 mul(t1, index, t1);
1665 add(tmp, tmp, t1);
1666 mv(t1, TypeStackSlotEntries::per_arg_count());
1667 add(t0, mdp, off_to_args);
1668 blt(tmp, t1, done);
1669
1670 bind(profileArgument);
1671
1672 ld(tmp, Address(callee, Method::const_offset()));
1673 load_unsigned_short(tmp, Address(tmp, ConstMethod::size_of_parameters_offset()));
1674 // stack offset o (zero based) from the start of the argument
1675 // list, for n arguments translates into offset n - o - 1 from
1676 // the end of the argument list
1677 mv(t0, stack_slot_offset0);
1678 mv(t1, slot_step);
1679 mul(t1, index, t1);
1680 add(t0, t0, t1);
1681 add(t0, mdp, t0);
1682 ld(t0, Address(t0));
1683 sub(tmp, tmp, t0);
1684 subi(tmp, tmp, 1);
1685 Address arg_addr = argument_address(tmp);
1686 ld(tmp, arg_addr);
1687
1688 mv(t0, argument_type_offset0);
1689 mv(t1, type_step);
1690 mul(t1, index, t1);
1691 add(t0, t0, t1);
1692 add(mdo_addr, mdp, t0);
1693 Address mdo_arg_addr(mdo_addr, 0);
1694 profile_obj_type(tmp, mdo_arg_addr, t1);
1695
1696 int to_add = in_bytes(TypeStackSlotEntries::per_arg_size());
1697 addi(off_to_args, off_to_args, to_add);
1698
1699 // increment index by 1
1700 addi(index, index, 1);
1701 mv(t1, TypeProfileArgsLimit);
1702 blt(index, t1, loop);
1703 bind(loopEnd);
1704
1705 if (MethodData::profile_return()) {
1706 ld(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())));
1707 sub(tmp, tmp, TypeProfileArgsLimit * TypeStackSlotEntries::per_arg_count());
1708 }
1709
1710 add(t0, mdp, off_to_args);
1711 bind(done);
1712 mv(mdp, t0);
1713
1714 // unspill the clobbered registers
1715 pop_reg(pushed_registers, sp);
1716
1717 if (MethodData::profile_return()) {
1718 // We're right after the type profile for the last
1719 // argument. tmp is the number of cells left in the
1720 // CallTypeData/VirtualCallTypeData to reach its end. Non null
1721 // if there's a return to profile.
1722 assert(SingleTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type");
1723 shadd(mdp, tmp, mdp, tmp, exact_log2(DataLayout::cell_size));
1724 }
1725 sd(mdp, Address(fp, frame::interpreter_frame_mdp_offset * wordSize));
1726 } else {
1727 assert(MethodData::profile_return(), "either profile call args or call ret");
1728 update_mdp_by_constant(mdp, in_bytes(TypeEntriesAtCall::return_only_size()));
1729 }
1730
1731 // mdp points right after the end of the
1732 // CallTypeData/VirtualCallTypeData, right after the cells for the
1733 // return value type if there's one
1734
1735 bind(profile_continue);
1736 }
1737 }
1738
1739 void InterpreterMacroAssembler::profile_return_type(Register mdp, Register ret, Register tmp) {
1740 assert_different_registers(mdp, ret, tmp, xbcp, t0, t1);
1741 if (ProfileInterpreter && MethodData::profile_return()) {
1742 Label profile_continue, done;
1743
1744 test_method_data_pointer(mdp, profile_continue);
1745
1746 if (MethodData::profile_return_jsr292_only()) {
1747 assert(Method::intrinsic_id_size_in_bytes() == 2, "assuming Method::_intrinsic_id is u2");
1748
1749 // If we don't profile all invoke bytecodes we must make sure
1750 // it's a bytecode we indeed profile. We can't go back to the
1751 // beginning of the ProfileData we intend to update to check its
1752 // type because we're right after it and we don't known its
1753 // length
1754 Label do_profile;
1755 lbu(t0, Address(xbcp, 0));
1756 mv(tmp, (u1)Bytecodes::_invokedynamic);
1757 beq(t0, tmp, do_profile);
1758 mv(tmp, (u1)Bytecodes::_invokehandle);
1759 beq(t0, tmp, do_profile);
1760 get_method(tmp);
1761 lhu(t0, Address(tmp, Method::intrinsic_id_offset()));
1762 mv(t1, static_cast<int>(vmIntrinsics::_compiledLambdaForm));
1763 bne(t0, t1, profile_continue);
1764 bind(do_profile);
1765 }
1766
1767 Address mdo_ret_addr(mdp, -in_bytes(SingleTypeEntry::size()));
1768 mv(tmp, ret);
1769 profile_obj_type(tmp, mdo_ret_addr, t1);
1770
1771 bind(profile_continue);
1772 }
1773 }
1774
1775 void InterpreterMacroAssembler::profile_parameters_type(Register mdp, Register tmp1, Register tmp2, Register tmp3) {
1776 assert_different_registers(t0, t1, mdp, tmp1, tmp2, tmp3);
1777 if (ProfileInterpreter && MethodData::profile_parameters()) {
1778 Label profile_continue, done;
1779
1780 test_method_data_pointer(mdp, profile_continue);
1781
1782 // Load the offset of the area within the MDO used for
1783 // parameters. If it's negative we're not profiling any parameters
1784 lwu(tmp1, Address(mdp, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset())));
1785 srli(tmp2, tmp1, 31);
1786 bnez(tmp2, profile_continue); // i.e. sign bit set
1787
1788 // Compute a pointer to the area for parameters from the offset
1789 // and move the pointer to the slot for the last
1790 // parameters. Collect profiling from last parameter down.
1791 // mdo start + parameters offset + array length - 1
1792 add(mdp, mdp, tmp1);
1793 ld(tmp1, Address(mdp, ArrayData::array_len_offset()));
1794 subi(tmp1, tmp1, TypeStackSlotEntries::per_arg_count());
1795
1796 Label loop;
1797 bind(loop);
1798
1799 int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0));
1800 int type_base = in_bytes(ParametersTypeData::type_offset(0));
1801 int per_arg_scale = exact_log2(DataLayout::cell_size);
1802 add(t0, mdp, off_base);
1803 add(t1, mdp, type_base);
1804
1805 shadd(tmp2, tmp1, t0, tmp2, per_arg_scale);
1806 // load offset on the stack from the slot for this parameter
1807 ld(tmp2, Address(tmp2, 0));
1808 neg(tmp2, tmp2);
1809
1810 // read the parameter from the local area
1811 shadd(tmp2, tmp2, xlocals, tmp2, Interpreter::logStackElementSize);
1812 ld(tmp2, Address(tmp2, 0));
1813
1814 // profile the parameter
1815 shadd(t1, tmp1, t1, t0, per_arg_scale);
1816 Address arg_type(t1, 0);
1817 profile_obj_type(tmp2, arg_type, tmp3);
1818
1819 // go to next parameter
1820 subi(tmp1, tmp1, TypeStackSlotEntries::per_arg_count());
1821 bgez(tmp1, loop);
1822
1823 bind(profile_continue);
1824 }
1825 }
1826
1827 void InterpreterMacroAssembler::load_resolved_indy_entry(Register cache, Register index) {
1828 // Get index out of bytecode pointer, get_cache_entry_pointer_at_bcp
1829 // register "cache" is trashed in next ld, so lets use it as a temporary register
1830 get_cache_index_at_bcp(index, cache, 1, sizeof(u4));
1831 // Get address of invokedynamic array
1832 ld(cache, Address(xcpool, in_bytes(ConstantPoolCache::invokedynamic_entries_offset())));
1833 // Scale the index to be the entry index * sizeof(ResolvedIndyEntry)
1834 slli(index, index, log2i_exact(sizeof(ResolvedIndyEntry)));
1835 addi(cache, cache, Array<ResolvedIndyEntry>::base_offset_in_bytes());
1836 add(cache, cache, index);
1837 }
1838
1839 void InterpreterMacroAssembler::load_field_entry(Register cache, Register index, int bcp_offset) {
1840 // Get index out of bytecode pointer
1841 get_cache_index_at_bcp(index, cache, bcp_offset, sizeof(u2));
1842 // Take shortcut if the size is a power of 2
1843 if (is_power_of_2(sizeof(ResolvedFieldEntry))) {
1844 slli(index, index, log2i_exact(sizeof(ResolvedFieldEntry))); // Scale index by power of 2
1845 } else {
1846 mv(cache, sizeof(ResolvedFieldEntry));
1847 mul(index, index, cache); // Scale the index to be the entry index * sizeof(ResolvedIndyEntry)
1848 }
1849 // Get address of field entries array
1850 ld(cache, Address(xcpool, ConstantPoolCache::field_entries_offset()));
1851 addi(cache, cache, Array<ResolvedIndyEntry>::base_offset_in_bytes());
1852 add(cache, cache, index);
1853 // Prevents stale data from being read after the bytecode is patched to the fast bytecode
1854 membar(MacroAssembler::LoadLoad);
1855 }
1856
1857 void InterpreterMacroAssembler::get_method_counters(Register method,
1858 Register mcs, Label& skip) {
1859 Label has_counters;
1860 ld(mcs, Address(method, Method::method_counters_offset()));
1861 bnez(mcs, has_counters);
1862 call_VM(noreg, CAST_FROM_FN_PTR(address,
1863 InterpreterRuntime::build_method_counters), method);
1864 ld(mcs, Address(method, Method::method_counters_offset()));
1865 beqz(mcs, skip); // No MethodCounters allocated, OutOfMemory
1866 bind(has_counters);
1867 }
1868
1869 void InterpreterMacroAssembler::read_flat_field(Register entry, Register obj) {
1870 call_VM(obj, CAST_FROM_FN_PTR(address, InterpreterRuntime::read_flat_field), obj, entry);
1871 membar(MacroAssembler::StoreStore);
1872 }
1873
1874 void InterpreterMacroAssembler::write_flat_field(Register entry, Register field_offset,
1875 Register tmp1, Register tmp2,
1876 Register obj) {
1877 assert_different_registers(entry, field_offset, tmp1, tmp2, obj);
1878 Label slow_path, done;
1879
1880 load_unsigned_byte(tmp1, Address(entry, in_bytes(ResolvedFieldEntry::flags_offset())));
1881 test_field_is_not_null_free_inline_type(tmp1, tmp2, slow_path);
1882
1883 null_check(x10); // FIXME JDK-8341120
1884
1885 add(obj, obj, field_offset);
1886
1887 load_klass(tmp1, x10);
1888 payload_address(x10, x10, tmp1);
1889
1890 Register layout_info = field_offset;
1891 load_unsigned_short(tmp1, Address(entry, in_bytes(ResolvedFieldEntry::field_index_offset())));
1892 ld(tmp2, Address(entry, in_bytes(ResolvedFieldEntry::field_holder_offset())));
1893 inline_layout_info(tmp2, tmp1, layout_info);
1894
1895 flat_field_copy(IN_HEAP, x10, obj, layout_info);
1896 j(done);
1897
1898 bind(slow_path);
1899 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::write_flat_field), obj, x10, entry);
1900 bind(done);
1901 }
1902
1903 void InterpreterMacroAssembler::load_method_entry(Register cache, Register index, int bcp_offset) {
1904 // Get index out of bytecode pointer
1905 get_cache_index_at_bcp(index, cache, bcp_offset, sizeof(u2));
1906 mv(cache, sizeof(ResolvedMethodEntry));
1907 mul(index, index, cache); // Scale the index to be the entry index * sizeof(ResolvedMethodEntry)
1908
1909 // Get address of field entries array
1910 ld(cache, Address(xcpool, ConstantPoolCache::method_entries_offset()));
1911 addi(cache, cache, Array<ResolvedMethodEntry>::base_offset_in_bytes());
1912 add(cache, cache, index);
1913 }
1914
1915 #ifdef ASSERT
1916 void InterpreterMacroAssembler::verify_field_offset(Register reg) {
1917 // Verify the field offset is not in the header, implicitly checks for 0
1918 Label L;
1919 mv(t0, oopDesc::base_offset_in_bytes());
1920 bge(reg, t0, L);
1921 stop("bad field offset");
1922 bind(L);
1923 }
1924
1925 void InterpreterMacroAssembler::verify_access_flags(Register access_flags, uint32_t flag,
1926 const char* msg, bool stop_by_hit) {
1927 Label L;
1928 test_bit(t0, access_flags, exact_log2(flag));
1929 if (stop_by_hit) {
1930 beqz(t0, L);
1931 } else {
1932 bnez(t0, L);
1933 }
1934 stop(msg);
1935 bind(L);
1936 }
1937
1938 void InterpreterMacroAssembler::verify_frame_setup() {
1939 Label L;
1940 const Address monitor_block_top(fp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
1941 ld(t0, monitor_block_top);
1942 shadd(t0, t0, fp, t0, LogBytesPerWord);
1943 beq(esp, t0, L);
1944 stop("broken stack frame setup in interpreter");
1945 bind(L);
1946 }
1947 #endif