1 /*
2 * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "compiler/compilerDefinitions.inline.hpp"
29 #include "gc/shared/barrierSetAssembler.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "gc/shared/tlab_globals.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "interpreter/interpreterRuntime.hpp"
34 #include "interpreter/interp_masm.hpp"
35 #include "interpreter/templateTable.hpp"
36 #include "memory/universe.hpp"
37 #include "oops/methodData.hpp"
38 #include "oops/method.inline.hpp"
39 #include "oops/objArrayKlass.hpp"
40 #include "oops/oop.inline.hpp"
41 #include "oops/resolvedFieldEntry.hpp"
42 #include "oops/resolvedIndyEntry.hpp"
43 #include "oops/resolvedMethodEntry.hpp"
44 #include "prims/jvmtiExport.hpp"
45 #include "prims/methodHandles.hpp"
46 #include "runtime/frame.inline.hpp"
47 #include "runtime/sharedRuntime.hpp"
48 #include "runtime/stubRoutines.hpp"
49 #include "runtime/synchronizer.hpp"
50 #include "utilities/powerOfTwo.hpp"
51
52 #define __ _masm->
53
54 // Address computation: local variables
55
56 static inline Address iaddress(int n) {
57 return Address(rlocals, Interpreter::local_offset_in_bytes(n));
58 }
59
60 static inline Address laddress(int n) {
61 return iaddress(n + 1);
62 }
63
64 static inline Address faddress(int n) {
65 return iaddress(n);
66 }
67
68 static inline Address daddress(int n) {
69 return laddress(n);
70 }
71
72 static inline Address aaddress(int n) {
73 return iaddress(n);
74 }
75
76 static inline Address iaddress(Register r) {
77 return Address(rlocals, r, Address::lsl(3));
78 }
79
80 static inline Address laddress(Register r, Register scratch,
81 InterpreterMacroAssembler* _masm) {
82 __ lea(scratch, Address(rlocals, r, Address::lsl(3)));
83 return Address(scratch, Interpreter::local_offset_in_bytes(1));
84 }
85
86 static inline Address faddress(Register r) {
87 return iaddress(r);
88 }
89
90 static inline Address daddress(Register r, Register scratch,
91 InterpreterMacroAssembler* _masm) {
92 return laddress(r, scratch, _masm);
93 }
94
95 static inline Address aaddress(Register r) {
96 return iaddress(r);
97 }
98
99 static inline Address at_rsp() {
100 return Address(esp, 0);
101 }
102
103 // At top of Java expression stack which may be different than esp(). It
104 // isn't for category 1 objects.
105 static inline Address at_tos () {
106 return Address(esp, Interpreter::expr_offset_in_bytes(0));
107 }
108
109 static inline Address at_tos_p1() {
110 return Address(esp, Interpreter::expr_offset_in_bytes(1));
111 }
112
113 static inline Address at_tos_p2() {
114 return Address(esp, Interpreter::expr_offset_in_bytes(2));
115 }
116
117 static inline Address at_tos_p3() {
118 return Address(esp, Interpreter::expr_offset_in_bytes(3));
119 }
120
121 static inline Address at_tos_p4() {
122 return Address(esp, Interpreter::expr_offset_in_bytes(4));
123 }
124
125 static inline Address at_tos_p5() {
126 return Address(esp, Interpreter::expr_offset_in_bytes(5));
127 }
128
129 // Condition conversion
130 static Assembler::Condition j_not(TemplateTable::Condition cc) {
131 switch (cc) {
132 case TemplateTable::equal : return Assembler::NE;
133 case TemplateTable::not_equal : return Assembler::EQ;
134 case TemplateTable::less : return Assembler::GE;
135 case TemplateTable::less_equal : return Assembler::GT;
136 case TemplateTable::greater : return Assembler::LE;
137 case TemplateTable::greater_equal: return Assembler::LT;
138 }
139 ShouldNotReachHere();
140 return Assembler::EQ;
141 }
142
143
144 // Miscellaneous helper routines
145 // Store an oop (or null) at the Address described by obj.
146 // If val == noreg this means store a null
147 static void do_oop_store(InterpreterMacroAssembler* _masm,
148 Address dst,
149 Register val,
150 DecoratorSet decorators) {
151 assert(val == noreg || val == r0, "parameter is just for looks");
152 __ store_heap_oop(dst, val, r10, r11, r3, decorators);
153 }
154
155 static void do_oop_load(InterpreterMacroAssembler* _masm,
156 Address src,
157 Register dst,
158 DecoratorSet decorators) {
159 __ load_heap_oop(dst, src, r10, r11, decorators);
160 }
161
162 Address TemplateTable::at_bcp(int offset) {
163 assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
164 return Address(rbcp, offset);
165 }
166
167 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
168 Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
169 int byte_no)
170 {
171 if (!RewriteBytecodes) return;
172 Label L_patch_done;
173
174 switch (bc) {
175 case Bytecodes::_fast_vputfield:
176 case Bytecodes::_fast_aputfield:
177 case Bytecodes::_fast_bputfield:
178 case Bytecodes::_fast_zputfield:
179 case Bytecodes::_fast_cputfield:
180 case Bytecodes::_fast_dputfield:
181 case Bytecodes::_fast_fputfield:
182 case Bytecodes::_fast_iputfield:
183 case Bytecodes::_fast_lputfield:
184 case Bytecodes::_fast_sputfield:
185 {
186 // We skip bytecode quickening for putfield instructions when
187 // the put_code written to the constant pool cache is zero.
188 // This is required so that every execution of this instruction
189 // calls out to InterpreterRuntime::resolve_get_put to do
190 // additional, required work.
191 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
192 assert(load_bc_into_bc_reg, "we use bc_reg as temp");
193 __ load_field_entry(temp_reg, bc_reg);
194 if (byte_no == f1_byte) {
195 __ lea(temp_reg, Address(temp_reg, in_bytes(ResolvedFieldEntry::get_code_offset())));
196 } else {
197 __ lea(temp_reg, Address(temp_reg, in_bytes(ResolvedFieldEntry::put_code_offset())));
198 }
199 // Load-acquire the bytecode to match store-release in ResolvedFieldEntry::fill_in()
200 __ ldarb(temp_reg, temp_reg);
201 __ movw(bc_reg, bc);
202 __ cbzw(temp_reg, L_patch_done); // don't patch
203 }
204 break;
205 default:
206 assert(byte_no == -1, "sanity");
207 // the pair bytecodes have already done the load.
208 if (load_bc_into_bc_reg) {
209 __ movw(bc_reg, bc);
210 }
211 }
212
213 if (JvmtiExport::can_post_breakpoint()) {
214 Label L_fast_patch;
215 // if a breakpoint is present we can't rewrite the stream directly
216 __ load_unsigned_byte(temp_reg, at_bcp(0));
217 __ cmpw(temp_reg, Bytecodes::_breakpoint);
218 __ br(Assembler::NE, L_fast_patch);
219 // Let breakpoint table handling rewrite to quicker bytecode
220 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), rmethod, rbcp, bc_reg);
221 __ b(L_patch_done);
222 __ bind(L_fast_patch);
223 }
224
225 #ifdef ASSERT
226 Label L_okay;
227 __ load_unsigned_byte(temp_reg, at_bcp(0));
228 __ cmpw(temp_reg, (int) Bytecodes::java_code(bc));
229 __ br(Assembler::EQ, L_okay);
230 __ cmpw(temp_reg, bc_reg);
231 __ br(Assembler::EQ, L_okay);
232 __ stop("patching the wrong bytecode");
233 __ bind(L_okay);
234 #endif
235
236 // patch bytecode
237 __ strb(bc_reg, at_bcp(0));
238 __ bind(L_patch_done);
239 }
240
241
242 // Individual instructions
243
244 void TemplateTable::nop() {
245 transition(vtos, vtos);
246 // nothing to do
247 }
248
249 void TemplateTable::shouldnotreachhere() {
250 transition(vtos, vtos);
251 __ stop("shouldnotreachhere bytecode");
252 }
253
254 void TemplateTable::aconst_null()
255 {
256 transition(vtos, atos);
257 __ mov(r0, 0);
258 }
259
260 void TemplateTable::iconst(int value)
261 {
262 transition(vtos, itos);
263 __ mov(r0, value);
264 }
265
266 void TemplateTable::lconst(int value)
267 {
268 __ mov(r0, value);
269 }
270
271 void TemplateTable::fconst(int value)
272 {
273 transition(vtos, ftos);
274 switch (value) {
275 case 0:
276 __ fmovs(v0, 0.0);
277 break;
278 case 1:
279 __ fmovs(v0, 1.0);
280 break;
281 case 2:
282 __ fmovs(v0, 2.0);
283 break;
284 default:
285 ShouldNotReachHere();
286 break;
287 }
288 }
289
290 void TemplateTable::dconst(int value)
291 {
292 transition(vtos, dtos);
293 switch (value) {
294 case 0:
295 __ fmovd(v0, 0.0);
296 break;
297 case 1:
298 __ fmovd(v0, 1.0);
299 break;
300 case 2:
301 __ fmovd(v0, 2.0);
302 break;
303 default:
304 ShouldNotReachHere();
305 break;
306 }
307 }
308
309 void TemplateTable::bipush()
310 {
311 transition(vtos, itos);
312 __ load_signed_byte32(r0, at_bcp(1));
313 }
314
315 void TemplateTable::sipush()
316 {
317 transition(vtos, itos);
318 __ load_unsigned_short(r0, at_bcp(1));
319 __ revw(r0, r0);
320 __ asrw(r0, r0, 16);
321 }
322
323 void TemplateTable::ldc(LdcType type)
324 {
325 transition(vtos, vtos);
326 Label call_ldc, notFloat, notClass, notInt, Done;
327
328 if (is_ldc_wide(type)) {
329 __ get_unsigned_2_byte_index_at_bcp(r1, 1);
330 } else {
331 __ load_unsigned_byte(r1, at_bcp(1));
332 }
333 __ get_cpool_and_tags(r2, r0);
334
335 const int base_offset = ConstantPool::header_size() * wordSize;
336 const int tags_offset = Array<u1>::base_offset_in_bytes();
337
338 // get type
339 __ add(r3, r1, tags_offset);
340 __ lea(r3, Address(r0, r3));
341 __ ldarb(r3, r3);
342
343 // unresolved class - get the resolved class
344 __ cmp(r3, (u1)JVM_CONSTANT_UnresolvedClass);
345 __ br(Assembler::EQ, call_ldc);
346
347 // unresolved class in error state - call into runtime to throw the error
348 // from the first resolution attempt
349 __ cmp(r3, (u1)JVM_CONSTANT_UnresolvedClassInError);
350 __ br(Assembler::EQ, call_ldc);
351
352 // resolved class - need to call vm to get java mirror of the class
353 __ cmp(r3, (u1)JVM_CONSTANT_Class);
354 __ br(Assembler::NE, notClass);
355
356 __ bind(call_ldc);
357 __ mov(c_rarg1, is_ldc_wide(type) ? 1 : 0);
358 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1);
359 __ push_ptr(r0);
360 __ verify_oop(r0);
361 __ b(Done);
362
363 __ bind(notClass);
364 __ cmp(r3, (u1)JVM_CONSTANT_Float);
365 __ br(Assembler::NE, notFloat);
366 // ftos
367 __ adds(r1, r2, r1, Assembler::LSL, 3);
368 __ ldrs(v0, Address(r1, base_offset));
369 __ push_f();
370 __ b(Done);
371
372 __ bind(notFloat);
373
374 __ cmp(r3, (u1)JVM_CONSTANT_Integer);
375 __ br(Assembler::NE, notInt);
376
377 // itos
378 __ adds(r1, r2, r1, Assembler::LSL, 3);
379 __ ldrw(r0, Address(r1, base_offset));
380 __ push_i(r0);
381 __ b(Done);
382
383 __ bind(notInt);
384 condy_helper(Done);
385
386 __ bind(Done);
387 }
388
389 // Fast path for caching oop constants.
390 void TemplateTable::fast_aldc(LdcType type)
391 {
392 transition(vtos, atos);
393
394 Register result = r0;
395 Register tmp = r1;
396 Register rarg = r2;
397
398 int index_size = is_ldc_wide(type) ? sizeof(u2) : sizeof(u1);
399
400 Label resolved;
401
402 // We are resolved if the resolved reference cache entry contains a
403 // non-null object (String, MethodType, etc.)
404 assert_different_registers(result, tmp);
405 __ get_cache_index_at_bcp(tmp, 1, index_size);
406 __ load_resolved_reference_at_index(result, tmp);
407 __ cbnz(result, resolved);
408
409 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
410
411 // first time invocation - must resolve first
412 __ mov(rarg, (int)bytecode());
413 __ call_VM(result, entry, rarg);
414
415 __ bind(resolved);
416
417 { // Check for the null sentinel.
418 // If we just called the VM, it already did the mapping for us,
419 // but it's harmless to retry.
420 Label notNull;
421
422 // Stash null_sentinel address to get its value later
423 __ movptr(rarg, (uintptr_t)Universe::the_null_sentinel_addr());
424 __ ldr(tmp, Address(rarg));
425 __ resolve_oop_handle(tmp, r5, rscratch2);
426 __ cmpoop(result, tmp);
427 __ br(Assembler::NE, notNull);
428 __ mov(result, 0); // null object reference
429 __ bind(notNull);
430 }
431
432 if (VerifyOops) {
433 // Safe to call with 0 result
434 __ verify_oop(result);
435 }
436 }
437
438 void TemplateTable::ldc2_w()
439 {
440 transition(vtos, vtos);
441 Label notDouble, notLong, Done;
442 __ get_unsigned_2_byte_index_at_bcp(r0, 1);
443
444 __ get_cpool_and_tags(r1, r2);
445 const int base_offset = ConstantPool::header_size() * wordSize;
446 const int tags_offset = Array<u1>::base_offset_in_bytes();
447
448 // get type
449 __ lea(r2, Address(r2, r0, Address::lsl(0)));
450 __ load_unsigned_byte(r2, Address(r2, tags_offset));
451 __ cmpw(r2, (int)JVM_CONSTANT_Double);
452 __ br(Assembler::NE, notDouble);
453
454 // dtos
455 __ lea (r2, Address(r1, r0, Address::lsl(3)));
456 __ ldrd(v0, Address(r2, base_offset));
457 __ push_d();
458 __ b(Done);
459
460 __ bind(notDouble);
461 __ cmpw(r2, (int)JVM_CONSTANT_Long);
462 __ br(Assembler::NE, notLong);
463
464 // ltos
465 __ lea(r0, Address(r1, r0, Address::lsl(3)));
466 __ ldr(r0, Address(r0, base_offset));
467 __ push_l();
468 __ b(Done);
469
470 __ bind(notLong);
471 condy_helper(Done);
472
473 __ bind(Done);
474 }
475
476 void TemplateTable::condy_helper(Label& Done)
477 {
478 Register obj = r0;
479 Register rarg = r1;
480 Register flags = r2;
481 Register off = r3;
482
483 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
484
485 __ mov(rarg, (int) bytecode());
486 __ call_VM(obj, entry, rarg);
487
488 __ get_vm_result_2(flags, rthread);
489
490 // VMr = obj = base address to find primitive value to push
491 // VMr2 = flags = (tos, off) using format of CPCE::_flags
492 __ mov(off, flags);
493 __ andw(off, off, ConstantPoolCache::field_index_mask);
494
495 const Address field(obj, off);
496
497 // What sort of thing are we loading?
498 // x86 uses a shift and mask or wings it with a shift plus assert
499 // the mask is not needed. aarch64 just uses bitfield extract
500 __ ubfxw(flags, flags, ConstantPoolCache::tos_state_shift,
501 ConstantPoolCache::tos_state_bits);
502
503 switch (bytecode()) {
504 case Bytecodes::_ldc:
505 case Bytecodes::_ldc_w:
506 {
507 // tos in (itos, ftos, stos, btos, ctos, ztos)
508 Label notInt, notFloat, notShort, notByte, notChar, notBool;
509 __ cmpw(flags, itos);
510 __ br(Assembler::NE, notInt);
511 // itos
512 __ ldrw(r0, field);
513 __ push(itos);
514 __ b(Done);
515
516 __ bind(notInt);
517 __ cmpw(flags, ftos);
518 __ br(Assembler::NE, notFloat);
519 // ftos
520 __ load_float(field);
521 __ push(ftos);
522 __ b(Done);
523
524 __ bind(notFloat);
525 __ cmpw(flags, stos);
526 __ br(Assembler::NE, notShort);
527 // stos
528 __ load_signed_short(r0, field);
529 __ push(stos);
530 __ b(Done);
531
532 __ bind(notShort);
533 __ cmpw(flags, btos);
534 __ br(Assembler::NE, notByte);
535 // btos
536 __ load_signed_byte(r0, field);
537 __ push(btos);
538 __ b(Done);
539
540 __ bind(notByte);
541 __ cmpw(flags, ctos);
542 __ br(Assembler::NE, notChar);
543 // ctos
544 __ load_unsigned_short(r0, field);
545 __ push(ctos);
546 __ b(Done);
547
548 __ bind(notChar);
549 __ cmpw(flags, ztos);
550 __ br(Assembler::NE, notBool);
551 // ztos
552 __ load_signed_byte(r0, field);
553 __ push(ztos);
554 __ b(Done);
555
556 __ bind(notBool);
557 break;
558 }
559
560 case Bytecodes::_ldc2_w:
561 {
562 Label notLong, notDouble;
563 __ cmpw(flags, ltos);
564 __ br(Assembler::NE, notLong);
565 // ltos
566 __ ldr(r0, field);
567 __ push(ltos);
568 __ b(Done);
569
570 __ bind(notLong);
571 __ cmpw(flags, dtos);
572 __ br(Assembler::NE, notDouble);
573 // dtos
574 __ load_double(field);
575 __ push(dtos);
576 __ b(Done);
577
578 __ bind(notDouble);
579 break;
580 }
581
582 default:
583 ShouldNotReachHere();
584 }
585
586 __ stop("bad ldc/condy");
587 }
588
589 void TemplateTable::locals_index(Register reg, int offset)
590 {
591 __ ldrb(reg, at_bcp(offset));
592 __ neg(reg, reg);
593 }
594
595 void TemplateTable::iload() {
596 iload_internal();
597 }
598
599 void TemplateTable::nofast_iload() {
600 iload_internal(may_not_rewrite);
601 }
602
603 void TemplateTable::iload_internal(RewriteControl rc) {
604 transition(vtos, itos);
605 if (RewriteFrequentPairs && rc == may_rewrite) {
606 Label rewrite, done;
607 Register bc = r4;
608
609 // get next bytecode
610 __ load_unsigned_byte(r1, at_bcp(Bytecodes::length_for(Bytecodes::_iload)));
611
612 // if _iload, wait to rewrite to iload2. We only want to rewrite the
613 // last two iloads in a pair. Comparing against fast_iload means that
614 // the next bytecode is neither an iload or a caload, and therefore
615 // an iload pair.
616 __ cmpw(r1, Bytecodes::_iload);
617 __ br(Assembler::EQ, done);
618
619 // if _fast_iload rewrite to _fast_iload2
620 __ cmpw(r1, Bytecodes::_fast_iload);
621 __ movw(bc, Bytecodes::_fast_iload2);
622 __ br(Assembler::EQ, rewrite);
623
624 // if _caload rewrite to _fast_icaload
625 __ cmpw(r1, Bytecodes::_caload);
626 __ movw(bc, Bytecodes::_fast_icaload);
627 __ br(Assembler::EQ, rewrite);
628
629 // else rewrite to _fast_iload
630 __ movw(bc, Bytecodes::_fast_iload);
631
632 // rewrite
633 // bc: new bytecode
634 __ bind(rewrite);
635 patch_bytecode(Bytecodes::_iload, bc, r1, false);
636 __ bind(done);
637
638 }
639
640 // do iload, get the local value into tos
641 locals_index(r1);
642 __ ldr(r0, iaddress(r1));
643
644 }
645
646 void TemplateTable::fast_iload2()
647 {
648 transition(vtos, itos);
649 locals_index(r1);
650 __ ldr(r0, iaddress(r1));
651 __ push(itos);
652 locals_index(r1, 3);
653 __ ldr(r0, iaddress(r1));
654 }
655
656 void TemplateTable::fast_iload()
657 {
658 transition(vtos, itos);
659 locals_index(r1);
660 __ ldr(r0, iaddress(r1));
661 }
662
663 void TemplateTable::lload()
664 {
665 transition(vtos, ltos);
666 __ ldrb(r1, at_bcp(1));
667 __ sub(r1, rlocals, r1, ext::uxtw, LogBytesPerWord);
668 __ ldr(r0, Address(r1, Interpreter::local_offset_in_bytes(1)));
669 }
670
671 void TemplateTable::fload()
672 {
673 transition(vtos, ftos);
674 locals_index(r1);
675 // n.b. we use ldrd here because this is a 64 bit slot
676 // this is comparable to the iload case
677 __ ldrd(v0, faddress(r1));
678 }
679
680 void TemplateTable::dload()
681 {
682 transition(vtos, dtos);
683 __ ldrb(r1, at_bcp(1));
684 __ sub(r1, rlocals, r1, ext::uxtw, LogBytesPerWord);
685 __ ldrd(v0, Address(r1, Interpreter::local_offset_in_bytes(1)));
686 }
687
688 void TemplateTable::aload()
689 {
690 transition(vtos, atos);
691 locals_index(r1);
692 __ ldr(r0, iaddress(r1));
693 }
694
695 void TemplateTable::locals_index_wide(Register reg) {
696 __ ldrh(reg, at_bcp(2));
697 __ rev16w(reg, reg);
698 __ neg(reg, reg);
699 }
700
701 void TemplateTable::wide_iload() {
702 transition(vtos, itos);
703 locals_index_wide(r1);
704 __ ldr(r0, iaddress(r1));
705 }
706
707 void TemplateTable::wide_lload()
708 {
709 transition(vtos, ltos);
710 __ ldrh(r1, at_bcp(2));
711 __ rev16w(r1, r1);
712 __ sub(r1, rlocals, r1, ext::uxtw, LogBytesPerWord);
713 __ ldr(r0, Address(r1, Interpreter::local_offset_in_bytes(1)));
714 }
715
716 void TemplateTable::wide_fload()
717 {
718 transition(vtos, ftos);
719 locals_index_wide(r1);
720 // n.b. we use ldrd here because this is a 64 bit slot
721 // this is comparable to the iload case
722 __ ldrd(v0, faddress(r1));
723 }
724
725 void TemplateTable::wide_dload()
726 {
727 transition(vtos, dtos);
728 __ ldrh(r1, at_bcp(2));
729 __ rev16w(r1, r1);
730 __ sub(r1, rlocals, r1, ext::uxtw, LogBytesPerWord);
731 __ ldrd(v0, Address(r1, Interpreter::local_offset_in_bytes(1)));
732 }
733
734 void TemplateTable::wide_aload()
735 {
736 transition(vtos, atos);
737 locals_index_wide(r1);
738 __ ldr(r0, aaddress(r1));
739 }
740
741 void TemplateTable::index_check(Register array, Register index)
742 {
743 // destroys r1, rscratch1
744 // sign extend index for use by indexed load
745 // __ movl2ptr(index, index);
746 // check index
747 Register length = rscratch1;
748 __ ldrw(length, Address(array, arrayOopDesc::length_offset_in_bytes()));
749 __ cmpw(index, length);
750 if (index != r1) {
751 // ??? convention: move aberrant index into r1 for exception message
752 assert(r1 != array, "different registers");
753 __ mov(r1, index);
754 }
755 Label ok;
756 __ br(Assembler::LO, ok);
757 // ??? convention: move array into r3 for exception message
758 __ mov(r3, array);
759 __ mov(rscratch1, Interpreter::_throw_ArrayIndexOutOfBoundsException_entry);
760 __ br(rscratch1);
761 __ bind(ok);
762 }
763
764 void TemplateTable::iaload()
765 {
766 transition(itos, itos);
767 __ mov(r1, r0);
768 __ pop_ptr(r0);
769 // r0: array
770 // r1: index
771 index_check(r0, r1); // leaves index in r1, kills rscratch1
772 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_INT) >> 2);
773 __ access_load_at(T_INT, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(2)), noreg, noreg);
774 }
775
776 void TemplateTable::laload()
777 {
778 transition(itos, ltos);
779 __ mov(r1, r0);
780 __ pop_ptr(r0);
781 // r0: array
782 // r1: index
783 index_check(r0, r1); // leaves index in r1, kills rscratch1
784 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_LONG) >> 3);
785 __ access_load_at(T_LONG, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(3)), noreg, noreg);
786 }
787
788 void TemplateTable::faload()
789 {
790 transition(itos, ftos);
791 __ mov(r1, r0);
792 __ pop_ptr(r0);
793 // r0: array
794 // r1: index
795 index_check(r0, r1); // leaves index in r1, kills rscratch1
796 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_FLOAT) >> 2);
797 __ access_load_at(T_FLOAT, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(2)), noreg, noreg);
798 }
799
800 void TemplateTable::daload()
801 {
802 transition(itos, dtos);
803 __ mov(r1, r0);
804 __ pop_ptr(r0);
805 // r0: array
806 // r1: index
807 index_check(r0, r1); // leaves index in r1, kills rscratch1
808 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_DOUBLE) >> 3);
809 __ access_load_at(T_DOUBLE, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(3)), noreg, noreg);
810 }
811
812 void TemplateTable::aaload()
813 {
814 transition(itos, atos);
815 __ mov(r1, r0);
816 __ pop_ptr(r0);
817 // r0: array
818 // r1: index
819 index_check(r0, r1); // leaves index in r1, kills rscratch1
820 __ profile_array_type<ArrayLoadData>(r2, r0, r4);
821 if (UseFlatArray) {
822 Label is_flat_array, done;
823
824 __ test_flat_array_oop(r0, r8 /*temp*/, is_flat_array);
825 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_OBJECT) >> LogBytesPerHeapOop);
826 do_oop_load(_masm, Address(r0, r1, Address::uxtw(LogBytesPerHeapOop)), r0, IS_ARRAY);
827
828 __ b(done);
829 __ bind(is_flat_array);
830 __ call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::value_array_load), r0, r1);
831 // Ensure the stores to copy the inline field contents are visible
832 // before any subsequent store that publishes this reference.
833 __ membar(Assembler::StoreStore);
834 __ bind(done);
835 } else {
836 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_OBJECT) >> LogBytesPerHeapOop);
837 do_oop_load(_masm, Address(r0, r1, Address::uxtw(LogBytesPerHeapOop)), r0, IS_ARRAY);
838 }
839 __ profile_element_type(r2, r0, r4);
840 }
841
842 void TemplateTable::baload()
843 {
844 transition(itos, itos);
845 __ mov(r1, r0);
846 __ pop_ptr(r0);
847 // r0: array
848 // r1: index
849 index_check(r0, r1); // leaves index in r1, kills rscratch1
850 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_BYTE) >> 0);
851 __ access_load_at(T_BYTE, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(0)), noreg, noreg);
852 }
853
854 void TemplateTable::caload()
855 {
856 transition(itos, itos);
857 __ mov(r1, r0);
858 __ pop_ptr(r0);
859 // r0: array
860 // r1: index
861 index_check(r0, r1); // leaves index in r1, kills rscratch1
862 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_CHAR) >> 1);
863 __ access_load_at(T_CHAR, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(1)), noreg, noreg);
864 }
865
866 // iload followed by caload frequent pair
867 void TemplateTable::fast_icaload()
868 {
869 transition(vtos, itos);
870 // load index out of locals
871 locals_index(r2);
872 __ ldr(r1, iaddress(r2));
873
874 __ pop_ptr(r0);
875
876 // r0: array
877 // r1: index
878 index_check(r0, r1); // leaves index in r1, kills rscratch1
879 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_CHAR) >> 1);
880 __ access_load_at(T_CHAR, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(1)), noreg, noreg);
881 }
882
883 void TemplateTable::saload()
884 {
885 transition(itos, itos);
886 __ mov(r1, r0);
887 __ pop_ptr(r0);
888 // r0: array
889 // r1: index
890 index_check(r0, r1); // leaves index in r1, kills rscratch1
891 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_SHORT) >> 1);
892 __ access_load_at(T_SHORT, IN_HEAP | IS_ARRAY, r0, Address(r0, r1, Address::uxtw(1)), noreg, noreg);
893 }
894
895 void TemplateTable::iload(int n)
896 {
897 transition(vtos, itos);
898 __ ldr(r0, iaddress(n));
899 }
900
901 void TemplateTable::lload(int n)
902 {
903 transition(vtos, ltos);
904 __ ldr(r0, laddress(n));
905 }
906
907 void TemplateTable::fload(int n)
908 {
909 transition(vtos, ftos);
910 __ ldrs(v0, faddress(n));
911 }
912
913 void TemplateTable::dload(int n)
914 {
915 transition(vtos, dtos);
916 __ ldrd(v0, daddress(n));
917 }
918
919 void TemplateTable::aload(int n)
920 {
921 transition(vtos, atos);
922 __ ldr(r0, iaddress(n));
923 }
924
925 void TemplateTable::aload_0() {
926 aload_0_internal();
927 }
928
929 void TemplateTable::nofast_aload_0() {
930 aload_0_internal(may_not_rewrite);
931 }
932
933 void TemplateTable::aload_0_internal(RewriteControl rc) {
934 // According to bytecode histograms, the pairs:
935 //
936 // _aload_0, _fast_igetfield
937 // _aload_0, _fast_agetfield
938 // _aload_0, _fast_fgetfield
939 //
940 // occur frequently. If RewriteFrequentPairs is set, the (slow)
941 // _aload_0 bytecode checks if the next bytecode is either
942 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then
943 // rewrites the current bytecode into a pair bytecode; otherwise it
944 // rewrites the current bytecode into _fast_aload_0 that doesn't do
945 // the pair check anymore.
946 //
947 // Note: If the next bytecode is _getfield, the rewrite must be
948 // delayed, otherwise we may miss an opportunity for a pair.
949 //
950 // Also rewrite frequent pairs
951 // aload_0, aload_1
952 // aload_0, iload_1
953 // These bytecodes with a small amount of code are most profitable
954 // to rewrite
955 if (RewriteFrequentPairs && rc == may_rewrite) {
956 Label rewrite, done;
957 const Register bc = r4;
958
959 // get next bytecode
960 __ load_unsigned_byte(r1, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)));
961
962 // if _getfield then wait with rewrite
963 __ cmpw(r1, Bytecodes::Bytecodes::_getfield);
964 __ br(Assembler::EQ, done);
965
966 // if _igetfield then rewrite to _fast_iaccess_0
967 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
968 __ cmpw(r1, Bytecodes::_fast_igetfield);
969 __ movw(bc, Bytecodes::_fast_iaccess_0);
970 __ br(Assembler::EQ, rewrite);
971
972 // if _agetfield then rewrite to _fast_aaccess_0
973 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
974 __ cmpw(r1, Bytecodes::_fast_agetfield);
975 __ movw(bc, Bytecodes::_fast_aaccess_0);
976 __ br(Assembler::EQ, rewrite);
977
978 // if _fgetfield then rewrite to _fast_faccess_0
979 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
980 __ cmpw(r1, Bytecodes::_fast_fgetfield);
981 __ movw(bc, Bytecodes::_fast_faccess_0);
982 __ br(Assembler::EQ, rewrite);
983
984 // else rewrite to _fast_aload0
985 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition");
986 __ movw(bc, Bytecodes::Bytecodes::_fast_aload_0);
987
988 // rewrite
989 // bc: new bytecode
990 __ bind(rewrite);
991 patch_bytecode(Bytecodes::_aload_0, bc, r1, false);
992
993 __ bind(done);
994 }
995
996 // Do actual aload_0 (must do this after patch_bytecode which might call VM and GC might change oop).
997 aload(0);
998 }
999
1000 void TemplateTable::istore()
1001 {
1002 transition(itos, vtos);
1003 locals_index(r1);
1004 // FIXME: We're being very pernickerty here storing a jint in a
1005 // local with strw, which costs an extra instruction over what we'd
1006 // be able to do with a simple str. We should just store the whole
1007 // word.
1008 __ lea(rscratch1, iaddress(r1));
1009 __ strw(r0, Address(rscratch1));
1010 }
1011
1012 void TemplateTable::lstore()
1013 {
1014 transition(ltos, vtos);
1015 locals_index(r1);
1016 __ str(r0, laddress(r1, rscratch1, _masm));
1017 }
1018
1019 void TemplateTable::fstore() {
1020 transition(ftos, vtos);
1021 locals_index(r1);
1022 __ lea(rscratch1, iaddress(r1));
1023 __ strs(v0, Address(rscratch1));
1024 }
1025
1026 void TemplateTable::dstore() {
1027 transition(dtos, vtos);
1028 locals_index(r1);
1029 __ strd(v0, daddress(r1, rscratch1, _masm));
1030 }
1031
1032 void TemplateTable::astore()
1033 {
1034 transition(vtos, vtos);
1035 __ pop_ptr(r0);
1036 locals_index(r1);
1037 __ str(r0, aaddress(r1));
1038 }
1039
1040 void TemplateTable::wide_istore() {
1041 transition(vtos, vtos);
1042 __ pop_i();
1043 locals_index_wide(r1);
1044 __ lea(rscratch1, iaddress(r1));
1045 __ strw(r0, Address(rscratch1));
1046 }
1047
1048 void TemplateTable::wide_lstore() {
1049 transition(vtos, vtos);
1050 __ pop_l();
1051 locals_index_wide(r1);
1052 __ str(r0, laddress(r1, rscratch1, _masm));
1053 }
1054
1055 void TemplateTable::wide_fstore() {
1056 transition(vtos, vtos);
1057 __ pop_f();
1058 locals_index_wide(r1);
1059 __ lea(rscratch1, faddress(r1));
1060 __ strs(v0, rscratch1);
1061 }
1062
1063 void TemplateTable::wide_dstore() {
1064 transition(vtos, vtos);
1065 __ pop_d();
1066 locals_index_wide(r1);
1067 __ strd(v0, daddress(r1, rscratch1, _masm));
1068 }
1069
1070 void TemplateTable::wide_astore() {
1071 transition(vtos, vtos);
1072 __ pop_ptr(r0);
1073 locals_index_wide(r1);
1074 __ str(r0, aaddress(r1));
1075 }
1076
1077 void TemplateTable::iastore() {
1078 transition(itos, vtos);
1079 __ pop_i(r1);
1080 __ pop_ptr(r3);
1081 // r0: value
1082 // r1: index
1083 // r3: array
1084 index_check(r3, r1); // prefer index in r1
1085 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_INT) >> 2);
1086 __ access_store_at(T_INT, IN_HEAP | IS_ARRAY, Address(r3, r1, Address::uxtw(2)), r0, noreg, noreg, noreg);
1087 }
1088
1089 void TemplateTable::lastore() {
1090 transition(ltos, vtos);
1091 __ pop_i(r1);
1092 __ pop_ptr(r3);
1093 // r0: value
1094 // r1: index
1095 // r3: array
1096 index_check(r3, r1); // prefer index in r1
1097 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_LONG) >> 3);
1098 __ access_store_at(T_LONG, IN_HEAP | IS_ARRAY, Address(r3, r1, Address::uxtw(3)), r0, noreg, noreg, noreg);
1099 }
1100
1101 void TemplateTable::fastore() {
1102 transition(ftos, vtos);
1103 __ pop_i(r1);
1104 __ pop_ptr(r3);
1105 // v0: value
1106 // r1: index
1107 // r3: array
1108 index_check(r3, r1); // prefer index in r1
1109 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_FLOAT) >> 2);
1110 __ access_store_at(T_FLOAT, IN_HEAP | IS_ARRAY, Address(r3, r1, Address::uxtw(2)), noreg /* ftos */, noreg, noreg, noreg);
1111 }
1112
1113 void TemplateTable::dastore() {
1114 transition(dtos, vtos);
1115 __ pop_i(r1);
1116 __ pop_ptr(r3);
1117 // v0: value
1118 // r1: index
1119 // r3: array
1120 index_check(r3, r1); // prefer index in r1
1121 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_DOUBLE) >> 3);
1122 __ access_store_at(T_DOUBLE, IN_HEAP | IS_ARRAY, Address(r3, r1, Address::uxtw(3)), noreg /* dtos */, noreg, noreg, noreg);
1123 }
1124
1125 void TemplateTable::aastore() {
1126 Label is_null, is_flat_array, ok_is_subtype, done;
1127 transition(vtos, vtos);
1128 // stack: ..., array, index, value
1129 __ ldr(r0, at_tos()); // value
1130 __ ldr(r2, at_tos_p1()); // index
1131 __ ldr(r3, at_tos_p2()); // array
1132
1133 index_check(r3, r2); // kills r1
1134
1135 __ profile_array_type<ArrayStoreData>(r4, r3, r5);
1136 __ profile_multiple_element_types(r4, r0, r5, r6);
1137
1138 __ add(r4, r2, arrayOopDesc::base_offset_in_bytes(T_OBJECT) >> LogBytesPerHeapOop);
1139 Address element_address(r3, r4, Address::uxtw(LogBytesPerHeapOop));
1140 // Be careful not to clobber r4 below
1141
1142 // do array store check - check for null value first
1143 __ cbz(r0, is_null);
1144
1145 // Move array class to r5
1146 __ load_klass(r5, r3);
1147
1148 if (UseFlatArray) {
1149 __ ldrw(r6, Address(r5, Klass::layout_helper_offset()));
1150 __ test_flat_array_layout(r6, is_flat_array);
1151 }
1152
1153 // Move subklass into r1
1154 __ load_klass(r1, r0);
1155
1156 // Move array element superklass into r0
1157 __ ldr(r0, Address(r5, ObjArrayKlass::element_klass_offset()));
1158 // Compress array + index*oopSize + 12 into a single register. Frees r2.
1159
1160 // Generate subtype check. Blows r2, r5
1161 // Superklass in r0. Subklass in r1.
1162
1163 // is "r1 <: r0" ? (value subclass <: array element superclass)
1164 __ gen_subtype_check(r1, ok_is_subtype, false);
1165
1166 // Come here on failure
1167 // object is at TOS
1168 __ b(Interpreter::_throw_ArrayStoreException_entry);
1169
1170 // Come here on success
1171 __ bind(ok_is_subtype);
1172
1173 // Get the value we will store
1174 __ ldr(r0, at_tos());
1175 // Now store using the appropriate barrier
1176 do_oop_store(_masm, element_address, r0, IS_ARRAY);
1177 __ b(done);
1178
1179 // Have a null in r0, r3=array, r2=index. Store null at ary[idx]
1180 __ bind(is_null);
1181 if (EnableValhalla) {
1182 Label is_null_into_value_array_npe, store_null;
1183
1184 // No way to store null in flat null-free array
1185 __ test_null_free_array_oop(r3, r8, is_null_into_value_array_npe);
1186 __ b(store_null);
1187
1188 __ bind(is_null_into_value_array_npe);
1189 __ b(ExternalAddress(Interpreter::_throw_NullPointerException_entry));
1190
1191 __ bind(store_null);
1192 }
1193
1194 // Store a null
1195 do_oop_store(_masm, element_address, noreg, IS_ARRAY);
1196 __ b(done);
1197
1198 if (UseFlatArray) {
1199 Label is_type_ok;
1200 __ bind(is_flat_array); // Store non-null value to flat
1201
1202 // Simplistic type check...
1203 // r0 - value, r2 - index, r3 - array.
1204
1205 // Profile the not-null value's klass.
1206 // Load value class
1207 __ load_klass(r1, r0);
1208
1209 // Move element klass into r7
1210 __ ldr(r7, Address(r5, ArrayKlass::element_klass_offset()));
1211
1212 // flat value array needs exact type match
1213 // is "r1 == r7" (value subclass == array element superclass)
1214
1215 __ cmp(r7, r1);
1216 __ br(Assembler::EQ, is_type_ok);
1217
1218 __ b(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry));
1219
1220 __ bind(is_type_ok);
1221 // r1: value's klass
1222 // r3: array
1223 // r5: array klass
1224 __ test_klass_is_empty_inline_type(r1, r7, done);
1225
1226 // calc dst for copy
1227 __ ldrw(r7, at_tos_p1()); // index
1228 __ data_for_value_array_index(r3, r5, r7, r7);
1229
1230 // ...and src for copy
1231 __ ldr(r6, at_tos()); // value
1232 __ data_for_oop(r6, r6, r1);
1233
1234 __ mov(r4, r1); // Shuffle arguments to avoid conflict with c_rarg1
1235 __ access_value_copy(IN_HEAP, r6, r7, r4);
1236 }
1237
1238 // Pop stack arguments
1239 __ bind(done);
1240 __ add(esp, esp, 3 * Interpreter::stackElementSize);
1241 }
1242
1243 void TemplateTable::bastore()
1244 {
1245 transition(itos, vtos);
1246 __ pop_i(r1);
1247 __ pop_ptr(r3);
1248 // r0: value
1249 // r1: index
1250 // r3: array
1251 index_check(r3, r1); // prefer index in r1
1252
1253 // Need to check whether array is boolean or byte
1254 // since both types share the bastore bytecode.
1255 __ load_klass(r2, r3);
1256 __ ldrw(r2, Address(r2, Klass::layout_helper_offset()));
1257 int diffbit_index = exact_log2(Klass::layout_helper_boolean_diffbit());
1258 Label L_skip;
1259 __ tbz(r2, diffbit_index, L_skip);
1260 __ andw(r0, r0, 1); // if it is a T_BOOLEAN array, mask the stored value to 0/1
1261 __ bind(L_skip);
1262
1263 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_BYTE) >> 0);
1264 __ access_store_at(T_BYTE, IN_HEAP | IS_ARRAY, Address(r3, r1, Address::uxtw(0)), r0, noreg, noreg, noreg);
1265 }
1266
1267 void TemplateTable::castore()
1268 {
1269 transition(itos, vtos);
1270 __ pop_i(r1);
1271 __ pop_ptr(r3);
1272 // r0: value
1273 // r1: index
1274 // r3: array
1275 index_check(r3, r1); // prefer index in r1
1276 __ add(r1, r1, arrayOopDesc::base_offset_in_bytes(T_CHAR) >> 1);
1277 __ access_store_at(T_CHAR, IN_HEAP | IS_ARRAY, Address(r3, r1, Address::uxtw(1)), r0, noreg, noreg, noreg);
1278 }
1279
1280 void TemplateTable::sastore()
1281 {
1282 castore();
1283 }
1284
1285 void TemplateTable::istore(int n)
1286 {
1287 transition(itos, vtos);
1288 __ str(r0, iaddress(n));
1289 }
1290
1291 void TemplateTable::lstore(int n)
1292 {
1293 transition(ltos, vtos);
1294 __ str(r0, laddress(n));
1295 }
1296
1297 void TemplateTable::fstore(int n)
1298 {
1299 transition(ftos, vtos);
1300 __ strs(v0, faddress(n));
1301 }
1302
1303 void TemplateTable::dstore(int n)
1304 {
1305 transition(dtos, vtos);
1306 __ strd(v0, daddress(n));
1307 }
1308
1309 void TemplateTable::astore(int n)
1310 {
1311 transition(vtos, vtos);
1312 __ pop_ptr(r0);
1313 __ str(r0, iaddress(n));
1314 }
1315
1316 void TemplateTable::pop()
1317 {
1318 transition(vtos, vtos);
1319 __ add(esp, esp, Interpreter::stackElementSize);
1320 }
1321
1322 void TemplateTable::pop2()
1323 {
1324 transition(vtos, vtos);
1325 __ add(esp, esp, 2 * Interpreter::stackElementSize);
1326 }
1327
1328 void TemplateTable::dup()
1329 {
1330 transition(vtos, vtos);
1331 __ ldr(r0, Address(esp, 0));
1332 __ push(r0);
1333 // stack: ..., a, a
1334 }
1335
1336 void TemplateTable::dup_x1()
1337 {
1338 transition(vtos, vtos);
1339 // stack: ..., a, b
1340 __ ldr(r0, at_tos()); // load b
1341 __ ldr(r2, at_tos_p1()); // load a
1342 __ str(r0, at_tos_p1()); // store b
1343 __ str(r2, at_tos()); // store a
1344 __ push(r0); // push b
1345 // stack: ..., b, a, b
1346 }
1347
1348 void TemplateTable::dup_x2()
1349 {
1350 transition(vtos, vtos);
1351 // stack: ..., a, b, c
1352 __ ldr(r0, at_tos()); // load c
1353 __ ldr(r2, at_tos_p2()); // load a
1354 __ str(r0, at_tos_p2()); // store c in a
1355 __ push(r0); // push c
1356 // stack: ..., c, b, c, c
1357 __ ldr(r0, at_tos_p2()); // load b
1358 __ str(r2, at_tos_p2()); // store a in b
1359 // stack: ..., c, a, c, c
1360 __ str(r0, at_tos_p1()); // store b in c
1361 // stack: ..., c, a, b, c
1362 }
1363
1364 void TemplateTable::dup2()
1365 {
1366 transition(vtos, vtos);
1367 // stack: ..., a, b
1368 __ ldr(r0, at_tos_p1()); // load a
1369 __ push(r0); // push a
1370 __ ldr(r0, at_tos_p1()); // load b
1371 __ push(r0); // push b
1372 // stack: ..., a, b, a, b
1373 }
1374
1375 void TemplateTable::dup2_x1()
1376 {
1377 transition(vtos, vtos);
1378 // stack: ..., a, b, c
1379 __ ldr(r2, at_tos()); // load c
1380 __ ldr(r0, at_tos_p1()); // load b
1381 __ push(r0); // push b
1382 __ push(r2); // push c
1383 // stack: ..., a, b, c, b, c
1384 __ str(r2, at_tos_p3()); // store c in b
1385 // stack: ..., a, c, c, b, c
1386 __ ldr(r2, at_tos_p4()); // load a
1387 __ str(r2, at_tos_p2()); // store a in 2nd c
1388 // stack: ..., a, c, a, b, c
1389 __ str(r0, at_tos_p4()); // store b in a
1390 // stack: ..., b, c, a, b, c
1391 }
1392
1393 void TemplateTable::dup2_x2()
1394 {
1395 transition(vtos, vtos);
1396 // stack: ..., a, b, c, d
1397 __ ldr(r2, at_tos()); // load d
1398 __ ldr(r0, at_tos_p1()); // load c
1399 __ push(r0) ; // push c
1400 __ push(r2); // push d
1401 // stack: ..., a, b, c, d, c, d
1402 __ ldr(r0, at_tos_p4()); // load b
1403 __ str(r0, at_tos_p2()); // store b in d
1404 __ str(r2, at_tos_p4()); // store d in b
1405 // stack: ..., a, d, c, b, c, d
1406 __ ldr(r2, at_tos_p5()); // load a
1407 __ ldr(r0, at_tos_p3()); // load c
1408 __ str(r2, at_tos_p3()); // store a in c
1409 __ str(r0, at_tos_p5()); // store c in a
1410 // stack: ..., c, d, a, b, c, d
1411 }
1412
1413 void TemplateTable::swap()
1414 {
1415 transition(vtos, vtos);
1416 // stack: ..., a, b
1417 __ ldr(r2, at_tos_p1()); // load a
1418 __ ldr(r0, at_tos()); // load b
1419 __ str(r2, at_tos()); // store a in b
1420 __ str(r0, at_tos_p1()); // store b in a
1421 // stack: ..., b, a
1422 }
1423
1424 void TemplateTable::iop2(Operation op)
1425 {
1426 transition(itos, itos);
1427 // r0 <== r1 op r0
1428 __ pop_i(r1);
1429 switch (op) {
1430 case add : __ addw(r0, r1, r0); break;
1431 case sub : __ subw(r0, r1, r0); break;
1432 case mul : __ mulw(r0, r1, r0); break;
1433 case _and : __ andw(r0, r1, r0); break;
1434 case _or : __ orrw(r0, r1, r0); break;
1435 case _xor : __ eorw(r0, r1, r0); break;
1436 case shl : __ lslvw(r0, r1, r0); break;
1437 case shr : __ asrvw(r0, r1, r0); break;
1438 case ushr : __ lsrvw(r0, r1, r0);break;
1439 default : ShouldNotReachHere();
1440 }
1441 }
1442
1443 void TemplateTable::lop2(Operation op)
1444 {
1445 transition(ltos, ltos);
1446 // r0 <== r1 op r0
1447 __ pop_l(r1);
1448 switch (op) {
1449 case add : __ add(r0, r1, r0); break;
1450 case sub : __ sub(r0, r1, r0); break;
1451 case mul : __ mul(r0, r1, r0); break;
1452 case _and : __ andr(r0, r1, r0); break;
1453 case _or : __ orr(r0, r1, r0); break;
1454 case _xor : __ eor(r0, r1, r0); break;
1455 default : ShouldNotReachHere();
1456 }
1457 }
1458
1459 void TemplateTable::idiv()
1460 {
1461 transition(itos, itos);
1462 // explicitly check for div0
1463 Label no_div0;
1464 __ cbnzw(r0, no_div0);
1465 __ mov(rscratch1, Interpreter::_throw_ArithmeticException_entry);
1466 __ br(rscratch1);
1467 __ bind(no_div0);
1468 __ pop_i(r1);
1469 // r0 <== r1 idiv r0
1470 __ corrected_idivl(r0, r1, r0, /* want_remainder */ false);
1471 }
1472
1473 void TemplateTable::irem()
1474 {
1475 transition(itos, itos);
1476 // explicitly check for div0
1477 Label no_div0;
1478 __ cbnzw(r0, no_div0);
1479 __ mov(rscratch1, Interpreter::_throw_ArithmeticException_entry);
1480 __ br(rscratch1);
1481 __ bind(no_div0);
1482 __ pop_i(r1);
1483 // r0 <== r1 irem r0
1484 __ corrected_idivl(r0, r1, r0, /* want_remainder */ true);
1485 }
1486
1487 void TemplateTable::lmul()
1488 {
1489 transition(ltos, ltos);
1490 __ pop_l(r1);
1491 __ mul(r0, r0, r1);
1492 }
1493
1494 void TemplateTable::ldiv()
1495 {
1496 transition(ltos, ltos);
1497 // explicitly check for div0
1498 Label no_div0;
1499 __ cbnz(r0, no_div0);
1500 __ mov(rscratch1, Interpreter::_throw_ArithmeticException_entry);
1501 __ br(rscratch1);
1502 __ bind(no_div0);
1503 __ pop_l(r1);
1504 // r0 <== r1 ldiv r0
1505 __ corrected_idivq(r0, r1, r0, /* want_remainder */ false);
1506 }
1507
1508 void TemplateTable::lrem()
1509 {
1510 transition(ltos, ltos);
1511 // explicitly check for div0
1512 Label no_div0;
1513 __ cbnz(r0, no_div0);
1514 __ mov(rscratch1, Interpreter::_throw_ArithmeticException_entry);
1515 __ br(rscratch1);
1516 __ bind(no_div0);
1517 __ pop_l(r1);
1518 // r0 <== r1 lrem r0
1519 __ corrected_idivq(r0, r1, r0, /* want_remainder */ true);
1520 }
1521
1522 void TemplateTable::lshl()
1523 {
1524 transition(itos, ltos);
1525 // shift count is in r0
1526 __ pop_l(r1);
1527 __ lslv(r0, r1, r0);
1528 }
1529
1530 void TemplateTable::lshr()
1531 {
1532 transition(itos, ltos);
1533 // shift count is in r0
1534 __ pop_l(r1);
1535 __ asrv(r0, r1, r0);
1536 }
1537
1538 void TemplateTable::lushr()
1539 {
1540 transition(itos, ltos);
1541 // shift count is in r0
1542 __ pop_l(r1);
1543 __ lsrv(r0, r1, r0);
1544 }
1545
1546 void TemplateTable::fop2(Operation op)
1547 {
1548 transition(ftos, ftos);
1549 switch (op) {
1550 case add:
1551 // n.b. use ldrd because this is a 64 bit slot
1552 __ pop_f(v1);
1553 __ fadds(v0, v1, v0);
1554 break;
1555 case sub:
1556 __ pop_f(v1);
1557 __ fsubs(v0, v1, v0);
1558 break;
1559 case mul:
1560 __ pop_f(v1);
1561 __ fmuls(v0, v1, v0);
1562 break;
1563 case div:
1564 __ pop_f(v1);
1565 __ fdivs(v0, v1, v0);
1566 break;
1567 case rem:
1568 __ fmovs(v1, v0);
1569 __ pop_f(v0);
1570 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem));
1571 break;
1572 default:
1573 ShouldNotReachHere();
1574 break;
1575 }
1576 }
1577
1578 void TemplateTable::dop2(Operation op)
1579 {
1580 transition(dtos, dtos);
1581 switch (op) {
1582 case add:
1583 // n.b. use ldrd because this is a 64 bit slot
1584 __ pop_d(v1);
1585 __ faddd(v0, v1, v0);
1586 break;
1587 case sub:
1588 __ pop_d(v1);
1589 __ fsubd(v0, v1, v0);
1590 break;
1591 case mul:
1592 __ pop_d(v1);
1593 __ fmuld(v0, v1, v0);
1594 break;
1595 case div:
1596 __ pop_d(v1);
1597 __ fdivd(v0, v1, v0);
1598 break;
1599 case rem:
1600 __ fmovd(v1, v0);
1601 __ pop_d(v0);
1602 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem));
1603 break;
1604 default:
1605 ShouldNotReachHere();
1606 break;
1607 }
1608 }
1609
1610 void TemplateTable::ineg()
1611 {
1612 transition(itos, itos);
1613 __ negw(r0, r0);
1614
1615 }
1616
1617 void TemplateTable::lneg()
1618 {
1619 transition(ltos, ltos);
1620 __ neg(r0, r0);
1621 }
1622
1623 void TemplateTable::fneg()
1624 {
1625 transition(ftos, ftos);
1626 __ fnegs(v0, v0);
1627 }
1628
1629 void TemplateTable::dneg()
1630 {
1631 transition(dtos, dtos);
1632 __ fnegd(v0, v0);
1633 }
1634
1635 void TemplateTable::iinc()
1636 {
1637 transition(vtos, vtos);
1638 __ load_signed_byte(r1, at_bcp(2)); // get constant
1639 locals_index(r2);
1640 __ ldr(r0, iaddress(r2));
1641 __ addw(r0, r0, r1);
1642 __ str(r0, iaddress(r2));
1643 }
1644
1645 void TemplateTable::wide_iinc()
1646 {
1647 transition(vtos, vtos);
1648 // __ mov(r1, zr);
1649 __ ldrw(r1, at_bcp(2)); // get constant and index
1650 __ rev16(r1, r1);
1651 __ ubfx(r2, r1, 0, 16);
1652 __ neg(r2, r2);
1653 __ sbfx(r1, r1, 16, 16);
1654 __ ldr(r0, iaddress(r2));
1655 __ addw(r0, r0, r1);
1656 __ str(r0, iaddress(r2));
1657 }
1658
1659 void TemplateTable::convert()
1660 {
1661 // Checking
1662 #ifdef ASSERT
1663 {
1664 TosState tos_in = ilgl;
1665 TosState tos_out = ilgl;
1666 switch (bytecode()) {
1667 case Bytecodes::_i2l: // fall through
1668 case Bytecodes::_i2f: // fall through
1669 case Bytecodes::_i2d: // fall through
1670 case Bytecodes::_i2b: // fall through
1671 case Bytecodes::_i2c: // fall through
1672 case Bytecodes::_i2s: tos_in = itos; break;
1673 case Bytecodes::_l2i: // fall through
1674 case Bytecodes::_l2f: // fall through
1675 case Bytecodes::_l2d: tos_in = ltos; break;
1676 case Bytecodes::_f2i: // fall through
1677 case Bytecodes::_f2l: // fall through
1678 case Bytecodes::_f2d: tos_in = ftos; break;
1679 case Bytecodes::_d2i: // fall through
1680 case Bytecodes::_d2l: // fall through
1681 case Bytecodes::_d2f: tos_in = dtos; break;
1682 default : ShouldNotReachHere();
1683 }
1684 switch (bytecode()) {
1685 case Bytecodes::_l2i: // fall through
1686 case Bytecodes::_f2i: // fall through
1687 case Bytecodes::_d2i: // fall through
1688 case Bytecodes::_i2b: // fall through
1689 case Bytecodes::_i2c: // fall through
1690 case Bytecodes::_i2s: tos_out = itos; break;
1691 case Bytecodes::_i2l: // fall through
1692 case Bytecodes::_f2l: // fall through
1693 case Bytecodes::_d2l: tos_out = ltos; break;
1694 case Bytecodes::_i2f: // fall through
1695 case Bytecodes::_l2f: // fall through
1696 case Bytecodes::_d2f: tos_out = ftos; break;
1697 case Bytecodes::_i2d: // fall through
1698 case Bytecodes::_l2d: // fall through
1699 case Bytecodes::_f2d: tos_out = dtos; break;
1700 default : ShouldNotReachHere();
1701 }
1702 transition(tos_in, tos_out);
1703 }
1704 #endif // ASSERT
1705 // static const int64_t is_nan = 0x8000000000000000L;
1706
1707 // Conversion
1708 switch (bytecode()) {
1709 case Bytecodes::_i2l:
1710 __ sxtw(r0, r0);
1711 break;
1712 case Bytecodes::_i2f:
1713 __ scvtfws(v0, r0);
1714 break;
1715 case Bytecodes::_i2d:
1716 __ scvtfwd(v0, r0);
1717 break;
1718 case Bytecodes::_i2b:
1719 __ sxtbw(r0, r0);
1720 break;
1721 case Bytecodes::_i2c:
1722 __ uxthw(r0, r0);
1723 break;
1724 case Bytecodes::_i2s:
1725 __ sxthw(r0, r0);
1726 break;
1727 case Bytecodes::_l2i:
1728 __ uxtw(r0, r0);
1729 break;
1730 case Bytecodes::_l2f:
1731 __ scvtfs(v0, r0);
1732 break;
1733 case Bytecodes::_l2d:
1734 __ scvtfd(v0, r0);
1735 break;
1736 case Bytecodes::_f2i:
1737 {
1738 Label L_Okay;
1739 __ clear_fpsr();
1740 __ fcvtzsw(r0, v0);
1741 __ get_fpsr(r1);
1742 __ cbzw(r1, L_Okay);
1743 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i));
1744 __ bind(L_Okay);
1745 }
1746 break;
1747 case Bytecodes::_f2l:
1748 {
1749 Label L_Okay;
1750 __ clear_fpsr();
1751 __ fcvtzs(r0, v0);
1752 __ get_fpsr(r1);
1753 __ cbzw(r1, L_Okay);
1754 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l));
1755 __ bind(L_Okay);
1756 }
1757 break;
1758 case Bytecodes::_f2d:
1759 __ fcvts(v0, v0);
1760 break;
1761 case Bytecodes::_d2i:
1762 {
1763 Label L_Okay;
1764 __ clear_fpsr();
1765 __ fcvtzdw(r0, v0);
1766 __ get_fpsr(r1);
1767 __ cbzw(r1, L_Okay);
1768 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i));
1769 __ bind(L_Okay);
1770 }
1771 break;
1772 case Bytecodes::_d2l:
1773 {
1774 Label L_Okay;
1775 __ clear_fpsr();
1776 __ fcvtzd(r0, v0);
1777 __ get_fpsr(r1);
1778 __ cbzw(r1, L_Okay);
1779 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l));
1780 __ bind(L_Okay);
1781 }
1782 break;
1783 case Bytecodes::_d2f:
1784 __ fcvtd(v0, v0);
1785 break;
1786 default:
1787 ShouldNotReachHere();
1788 }
1789 }
1790
1791 void TemplateTable::lcmp()
1792 {
1793 transition(ltos, itos);
1794 Label done;
1795 __ pop_l(r1);
1796 __ cmp(r1, r0);
1797 __ mov(r0, (uint64_t)-1L);
1798 __ br(Assembler::LT, done);
1799 // __ mov(r0, 1UL);
1800 // __ csel(r0, r0, zr, Assembler::NE);
1801 // and here is a faster way
1802 __ csinc(r0, zr, zr, Assembler::EQ);
1803 __ bind(done);
1804 }
1805
1806 void TemplateTable::float_cmp(bool is_float, int unordered_result)
1807 {
1808 Label done;
1809 if (is_float) {
1810 // XXX get rid of pop here, use ... reg, mem32
1811 __ pop_f(v1);
1812 __ fcmps(v1, v0);
1813 } else {
1814 // XXX get rid of pop here, use ... reg, mem64
1815 __ pop_d(v1);
1816 __ fcmpd(v1, v0);
1817 }
1818 if (unordered_result < 0) {
1819 // we want -1 for unordered or less than, 0 for equal and 1 for
1820 // greater than.
1821 __ mov(r0, (uint64_t)-1L);
1822 // for FP LT tests less than or unordered
1823 __ br(Assembler::LT, done);
1824 // install 0 for EQ otherwise 1
1825 __ csinc(r0, zr, zr, Assembler::EQ);
1826 } else {
1827 // we want -1 for less than, 0 for equal and 1 for unordered or
1828 // greater than.
1829 __ mov(r0, 1L);
1830 // for FP HI tests greater than or unordered
1831 __ br(Assembler::HI, done);
1832 // install 0 for EQ otherwise ~0
1833 __ csinv(r0, zr, zr, Assembler::EQ);
1834
1835 }
1836 __ bind(done);
1837 }
1838
1839 void TemplateTable::branch(bool is_jsr, bool is_wide)
1840 {
1841 __ profile_taken_branch(r0, r1);
1842 const ByteSize be_offset = MethodCounters::backedge_counter_offset() +
1843 InvocationCounter::counter_offset();
1844 const ByteSize inv_offset = MethodCounters::invocation_counter_offset() +
1845 InvocationCounter::counter_offset();
1846
1847 // load branch displacement
1848 if (!is_wide) {
1849 __ ldrh(r2, at_bcp(1));
1850 __ rev16(r2, r2);
1851 // sign extend the 16 bit value in r2
1852 __ sbfm(r2, r2, 0, 15);
1853 } else {
1854 __ ldrw(r2, at_bcp(1));
1855 __ revw(r2, r2);
1856 // sign extend the 32 bit value in r2
1857 __ sbfm(r2, r2, 0, 31);
1858 }
1859
1860 // Handle all the JSR stuff here, then exit.
1861 // It's much shorter and cleaner than intermingling with the non-JSR
1862 // normal-branch stuff occurring below.
1863
1864 if (is_jsr) {
1865 // Pre-load the next target bytecode into rscratch1
1866 __ load_unsigned_byte(rscratch1, Address(rbcp, r2));
1867 // compute return address as bci
1868 __ ldr(rscratch2, Address(rmethod, Method::const_offset()));
1869 __ add(rscratch2, rscratch2,
1870 in_bytes(ConstMethod::codes_offset()) - (is_wide ? 5 : 3));
1871 __ sub(r1, rbcp, rscratch2);
1872 __ push_i(r1);
1873 // Adjust the bcp by the 16-bit displacement in r2
1874 __ add(rbcp, rbcp, r2);
1875 __ dispatch_only(vtos, /*generate_poll*/true);
1876 return;
1877 }
1878
1879 // Normal (non-jsr) branch handling
1880
1881 // Adjust the bcp by the displacement in r2
1882 __ add(rbcp, rbcp, r2);
1883
1884 assert(UseLoopCounter || !UseOnStackReplacement,
1885 "on-stack-replacement requires loop counters");
1886 Label backedge_counter_overflow;
1887 Label dispatch;
1888 if (UseLoopCounter) {
1889 // increment backedge counter for backward branches
1890 // r0: MDO
1891 // w1: MDO bumped taken-count
1892 // r2: target offset
1893 __ cmp(r2, zr);
1894 __ br(Assembler::GT, dispatch); // count only if backward branch
1895
1896 // ECN: FIXME: This code smells
1897 // check if MethodCounters exists
1898 Label has_counters;
1899 __ ldr(rscratch1, Address(rmethod, Method::method_counters_offset()));
1900 __ cbnz(rscratch1, has_counters);
1901 __ push(r0);
1902 __ push(r1);
1903 __ push(r2);
1904 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
1905 InterpreterRuntime::build_method_counters), rmethod);
1906 __ pop(r2);
1907 __ pop(r1);
1908 __ pop(r0);
1909 __ ldr(rscratch1, Address(rmethod, Method::method_counters_offset()));
1910 __ cbz(rscratch1, dispatch); // No MethodCounters allocated, OutOfMemory
1911 __ bind(has_counters);
1912
1913 Label no_mdo;
1914 int increment = InvocationCounter::count_increment;
1915 if (ProfileInterpreter) {
1916 // Are we profiling?
1917 __ ldr(r1, Address(rmethod, in_bytes(Method::method_data_offset())));
1918 __ cbz(r1, no_mdo);
1919 // Increment the MDO backedge counter
1920 const Address mdo_backedge_counter(r1, in_bytes(MethodData::backedge_counter_offset()) +
1921 in_bytes(InvocationCounter::counter_offset()));
1922 const Address mask(r1, in_bytes(MethodData::backedge_mask_offset()));
1923 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask,
1924 r0, rscratch1, false, Assembler::EQ,
1925 UseOnStackReplacement ? &backedge_counter_overflow : &dispatch);
1926 __ b(dispatch);
1927 }
1928 __ bind(no_mdo);
1929 // Increment backedge counter in MethodCounters*
1930 __ ldr(rscratch1, Address(rmethod, Method::method_counters_offset()));
1931 const Address mask(rscratch1, in_bytes(MethodCounters::backedge_mask_offset()));
1932 __ increment_mask_and_jump(Address(rscratch1, be_offset), increment, mask,
1933 r0, rscratch2, false, Assembler::EQ,
1934 UseOnStackReplacement ? &backedge_counter_overflow : &dispatch);
1935 __ bind(dispatch);
1936 }
1937
1938 // Pre-load the next target bytecode into rscratch1
1939 __ load_unsigned_byte(rscratch1, Address(rbcp, 0));
1940
1941 // continue with the bytecode @ target
1942 // rscratch1: target bytecode
1943 // rbcp: target bcp
1944 __ dispatch_only(vtos, /*generate_poll*/true);
1945
1946 if (UseLoopCounter && UseOnStackReplacement) {
1947 // invocation counter overflow
1948 __ bind(backedge_counter_overflow);
1949 __ neg(r2, r2);
1950 __ add(r2, r2, rbcp); // branch bcp
1951 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp)
1952 __ call_VM(noreg,
1953 CAST_FROM_FN_PTR(address,
1954 InterpreterRuntime::frequency_counter_overflow),
1955 r2);
1956 __ load_unsigned_byte(r1, Address(rbcp, 0)); // restore target bytecode
1957
1958 // r0: osr nmethod (osr ok) or null (osr not possible)
1959 // w1: target bytecode
1960 // r2: scratch
1961 __ cbz(r0, dispatch); // test result -- no osr if null
1962 // nmethod may have been invalidated (VM may block upon call_VM return)
1963 __ ldrb(r2, Address(r0, nmethod::state_offset()));
1964 if (nmethod::in_use != 0)
1965 __ sub(r2, r2, nmethod::in_use);
1966 __ cbnz(r2, dispatch);
1967
1968 // We have the address of an on stack replacement routine in r0
1969 // We need to prepare to execute the OSR method. First we must
1970 // migrate the locals and monitors off of the stack.
1971
1972 __ mov(r19, r0); // save the nmethod
1973
1974 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
1975
1976 // r0 is OSR buffer, move it to expected parameter location
1977 __ mov(j_rarg0, r0);
1978
1979 // remove activation
1980 // get sender esp
1981 __ ldr(esp,
1982 Address(rfp, frame::interpreter_frame_sender_sp_offset * wordSize));
1983 // remove frame anchor
1984 __ leave();
1985 // Ensure compiled code always sees stack at proper alignment
1986 __ andr(sp, esp, -16);
1987
1988 // and begin the OSR nmethod
1989 __ ldr(rscratch1, Address(r19, nmethod::osr_entry_point_offset()));
1990 __ br(rscratch1);
1991 }
1992 }
1993
1994
1995 void TemplateTable::if_0cmp(Condition cc)
1996 {
1997 transition(itos, vtos);
1998 // assume branch is more often taken than not (loops use backward branches)
1999 Label not_taken;
2000 if (cc == equal)
2001 __ cbnzw(r0, not_taken);
2002 else if (cc == not_equal)
2003 __ cbzw(r0, not_taken);
2004 else {
2005 __ andsw(zr, r0, r0);
2006 __ br(j_not(cc), not_taken);
2007 }
2008
2009 branch(false, false);
2010 __ bind(not_taken);
2011 __ profile_not_taken_branch(r0);
2012 }
2013
2014 void TemplateTable::if_icmp(Condition cc)
2015 {
2016 transition(itos, vtos);
2017 // assume branch is more often taken than not (loops use backward branches)
2018 Label not_taken;
2019 __ pop_i(r1);
2020 __ cmpw(r1, r0, Assembler::LSL);
2021 __ br(j_not(cc), not_taken);
2022 branch(false, false);
2023 __ bind(not_taken);
2024 __ profile_not_taken_branch(r0);
2025 }
2026
2027 void TemplateTable::if_nullcmp(Condition cc)
2028 {
2029 transition(atos, vtos);
2030 // assume branch is more often taken than not (loops use backward branches)
2031 Label not_taken;
2032 if (cc == equal)
2033 __ cbnz(r0, not_taken);
2034 else
2035 __ cbz(r0, not_taken);
2036 branch(false, false);
2037 __ bind(not_taken);
2038 __ profile_not_taken_branch(r0);
2039 }
2040
2041 void TemplateTable::if_acmp(Condition cc) {
2042 transition(atos, vtos);
2043 // assume branch is more often taken than not (loops use backward branches)
2044 Label taken, not_taken;
2045 __ pop_ptr(r1);
2046
2047 __ profile_acmp(r2, r1, r0, r4);
2048
2049 Register is_inline_type_mask = rscratch1;
2050 __ mov(is_inline_type_mask, markWord::inline_type_pattern);
2051
2052 if (EnableValhalla) {
2053 __ cmp(r1, r0);
2054 __ br(Assembler::EQ, (cc == equal) ? taken : not_taken);
2055
2056 // might be substitutable, test if either r0 or r1 is null
2057 __ andr(r2, r0, r1);
2058 __ cbz(r2, (cc == equal) ? not_taken : taken);
2059
2060 // and both are values ?
2061 __ ldr(r2, Address(r1, oopDesc::mark_offset_in_bytes()));
2062 __ andr(r2, r2, is_inline_type_mask);
2063 __ ldr(r4, Address(r0, oopDesc::mark_offset_in_bytes()));
2064 __ andr(r4, r4, is_inline_type_mask);
2065 __ andr(r2, r2, r4);
2066 __ cmp(r2, is_inline_type_mask);
2067 __ br(Assembler::NE, (cc == equal) ? not_taken : taken);
2068
2069 // same value klass ?
2070 __ load_metadata(r2, r1);
2071 __ load_metadata(r4, r0);
2072 __ cmp(r2, r4);
2073 __ br(Assembler::NE, (cc == equal) ? not_taken : taken);
2074
2075 // Know both are the same type, let's test for substitutability...
2076 if (cc == equal) {
2077 invoke_is_substitutable(r0, r1, taken, not_taken);
2078 } else {
2079 invoke_is_substitutable(r0, r1, not_taken, taken);
2080 }
2081 __ stop("Not reachable");
2082 }
2083
2084 __ cmpoop(r1, r0);
2085 __ br(j_not(cc), not_taken);
2086 __ bind(taken);
2087 branch(false, false);
2088 __ bind(not_taken);
2089 __ profile_not_taken_branch(r0, true);
2090 }
2091
2092 void TemplateTable::invoke_is_substitutable(Register aobj, Register bobj,
2093 Label& is_subst, Label& not_subst) {
2094
2095 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::is_substitutable), aobj, bobj);
2096 // Restored... r0 answer, jmp to outcome...
2097 __ cbz(r0, not_subst);
2098 __ b(is_subst);
2099 }
2100
2101
2102 void TemplateTable::ret() {
2103 transition(vtos, vtos);
2104 locals_index(r1);
2105 __ ldr(r1, aaddress(r1)); // get return bci, compute return bcp
2106 __ profile_ret(r1, r2);
2107 __ ldr(rbcp, Address(rmethod, Method::const_offset()));
2108 __ lea(rbcp, Address(rbcp, r1));
2109 __ add(rbcp, rbcp, in_bytes(ConstMethod::codes_offset()));
2110 __ dispatch_next(vtos, 0, /*generate_poll*/true);
2111 }
2112
2113 void TemplateTable::wide_ret() {
2114 transition(vtos, vtos);
2115 locals_index_wide(r1);
2116 __ ldr(r1, aaddress(r1)); // get return bci, compute return bcp
2117 __ profile_ret(r1, r2);
2118 __ ldr(rbcp, Address(rmethod, Method::const_offset()));
2119 __ lea(rbcp, Address(rbcp, r1));
2120 __ add(rbcp, rbcp, in_bytes(ConstMethod::codes_offset()));
2121 __ dispatch_next(vtos, 0, /*generate_poll*/true);
2122 }
2123
2124
2125 void TemplateTable::tableswitch() {
2126 Label default_case, continue_execution;
2127 transition(itos, vtos);
2128 // align rbcp
2129 __ lea(r1, at_bcp(BytesPerInt));
2130 __ andr(r1, r1, -BytesPerInt);
2131 // load lo & hi
2132 __ ldrw(r2, Address(r1, BytesPerInt));
2133 __ ldrw(r3, Address(r1, 2 * BytesPerInt));
2134 __ rev32(r2, r2);
2135 __ rev32(r3, r3);
2136 // check against lo & hi
2137 __ cmpw(r0, r2);
2138 __ br(Assembler::LT, default_case);
2139 __ cmpw(r0, r3);
2140 __ br(Assembler::GT, default_case);
2141 // lookup dispatch offset
2142 __ subw(r0, r0, r2);
2143 __ lea(r3, Address(r1, r0, Address::uxtw(2)));
2144 __ ldrw(r3, Address(r3, 3 * BytesPerInt));
2145 __ profile_switch_case(r0, r1, r2);
2146 // continue execution
2147 __ bind(continue_execution);
2148 __ rev32(r3, r3);
2149 __ load_unsigned_byte(rscratch1, Address(rbcp, r3, Address::sxtw(0)));
2150 __ add(rbcp, rbcp, r3, ext::sxtw);
2151 __ dispatch_only(vtos, /*generate_poll*/true);
2152 // handle default
2153 __ bind(default_case);
2154 __ profile_switch_default(r0);
2155 __ ldrw(r3, Address(r1, 0));
2156 __ b(continue_execution);
2157 }
2158
2159 void TemplateTable::lookupswitch() {
2160 transition(itos, itos);
2161 __ stop("lookupswitch bytecode should have been rewritten");
2162 }
2163
2164 void TemplateTable::fast_linearswitch() {
2165 transition(itos, vtos);
2166 Label loop_entry, loop, found, continue_execution;
2167 // bswap r0 so we can avoid bswapping the table entries
2168 __ rev32(r0, r0);
2169 // align rbcp
2170 __ lea(r19, at_bcp(BytesPerInt)); // btw: should be able to get rid of
2171 // this instruction (change offsets
2172 // below)
2173 __ andr(r19, r19, -BytesPerInt);
2174 // set counter
2175 __ ldrw(r1, Address(r19, BytesPerInt));
2176 __ rev32(r1, r1);
2177 __ b(loop_entry);
2178 // table search
2179 __ bind(loop);
2180 __ lea(rscratch1, Address(r19, r1, Address::lsl(3)));
2181 __ ldrw(rscratch1, Address(rscratch1, 2 * BytesPerInt));
2182 __ cmpw(r0, rscratch1);
2183 __ br(Assembler::EQ, found);
2184 __ bind(loop_entry);
2185 __ subs(r1, r1, 1);
2186 __ br(Assembler::PL, loop);
2187 // default case
2188 __ profile_switch_default(r0);
2189 __ ldrw(r3, Address(r19, 0));
2190 __ b(continue_execution);
2191 // entry found -> get offset
2192 __ bind(found);
2193 __ lea(rscratch1, Address(r19, r1, Address::lsl(3)));
2194 __ ldrw(r3, Address(rscratch1, 3 * BytesPerInt));
2195 __ profile_switch_case(r1, r0, r19);
2196 // continue execution
2197 __ bind(continue_execution);
2198 __ rev32(r3, r3);
2199 __ add(rbcp, rbcp, r3, ext::sxtw);
2200 __ ldrb(rscratch1, Address(rbcp, 0));
2201 __ dispatch_only(vtos, /*generate_poll*/true);
2202 }
2203
2204 void TemplateTable::fast_binaryswitch() {
2205 transition(itos, vtos);
2206 // Implementation using the following core algorithm:
2207 //
2208 // int binary_search(int key, LookupswitchPair* array, int n) {
2209 // // Binary search according to "Methodik des Programmierens" by
2210 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
2211 // int i = 0;
2212 // int j = n;
2213 // while (i+1 < j) {
2214 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
2215 // // with Q: for all i: 0 <= i < n: key < a[i]
2216 // // where a stands for the array and assuming that the (inexisting)
2217 // // element a[n] is infinitely big.
2218 // int h = (i + j) >> 1;
2219 // // i < h < j
2220 // if (key < array[h].fast_match()) {
2221 // j = h;
2222 // } else {
2223 // i = h;
2224 // }
2225 // }
2226 // // R: a[i] <= key < a[i+1] or Q
2227 // // (i.e., if key is within array, i is the correct index)
2228 // return i;
2229 // }
2230
2231 // Register allocation
2232 const Register key = r0; // already set (tosca)
2233 const Register array = r1;
2234 const Register i = r2;
2235 const Register j = r3;
2236 const Register h = rscratch1;
2237 const Register temp = rscratch2;
2238
2239 // Find array start
2240 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to
2241 // get rid of this
2242 // instruction (change
2243 // offsets below)
2244 __ andr(array, array, -BytesPerInt);
2245
2246 // Initialize i & j
2247 __ mov(i, 0); // i = 0;
2248 __ ldrw(j, Address(array, -BytesPerInt)); // j = length(array);
2249
2250 // Convert j into native byteordering
2251 __ rev32(j, j);
2252
2253 // And start
2254 Label entry;
2255 __ b(entry);
2256
2257 // binary search loop
2258 {
2259 Label loop;
2260 __ bind(loop);
2261 // int h = (i + j) >> 1;
2262 __ addw(h, i, j); // h = i + j;
2263 __ lsrw(h, h, 1); // h = (i + j) >> 1;
2264 // if (key < array[h].fast_match()) {
2265 // j = h;
2266 // } else {
2267 // i = h;
2268 // }
2269 // Convert array[h].match to native byte-ordering before compare
2270 __ ldr(temp, Address(array, h, Address::lsl(3)));
2271 __ rev32(temp, temp);
2272 __ cmpw(key, temp);
2273 // j = h if (key < array[h].fast_match())
2274 __ csel(j, h, j, Assembler::LT);
2275 // i = h if (key >= array[h].fast_match())
2276 __ csel(i, h, i, Assembler::GE);
2277 // while (i+1 < j)
2278 __ bind(entry);
2279 __ addw(h, i, 1); // i+1
2280 __ cmpw(h, j); // i+1 < j
2281 __ br(Assembler::LT, loop);
2282 }
2283
2284 // end of binary search, result index is i (must check again!)
2285 Label default_case;
2286 // Convert array[i].match to native byte-ordering before compare
2287 __ ldr(temp, Address(array, i, Address::lsl(3)));
2288 __ rev32(temp, temp);
2289 __ cmpw(key, temp);
2290 __ br(Assembler::NE, default_case);
2291
2292 // entry found -> j = offset
2293 __ add(j, array, i, ext::uxtx, 3);
2294 __ ldrw(j, Address(j, BytesPerInt));
2295 __ profile_switch_case(i, key, array);
2296 __ rev32(j, j);
2297 __ load_unsigned_byte(rscratch1, Address(rbcp, j, Address::sxtw(0)));
2298 __ lea(rbcp, Address(rbcp, j, Address::sxtw(0)));
2299 __ dispatch_only(vtos, /*generate_poll*/true);
2300
2301 // default case -> j = default offset
2302 __ bind(default_case);
2303 __ profile_switch_default(i);
2304 __ ldrw(j, Address(array, -2 * BytesPerInt));
2305 __ rev32(j, j);
2306 __ load_unsigned_byte(rscratch1, Address(rbcp, j, Address::sxtw(0)));
2307 __ lea(rbcp, Address(rbcp, j, Address::sxtw(0)));
2308 __ dispatch_only(vtos, /*generate_poll*/true);
2309 }
2310
2311
2312 void TemplateTable::_return(TosState state)
2313 {
2314 transition(state, state);
2315 assert(_desc->calls_vm(),
2316 "inconsistent calls_vm information"); // call in remove_activation
2317
2318 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
2319 assert(state == vtos, "only valid state");
2320
2321 __ ldr(c_rarg1, aaddress(0));
2322 __ load_klass(r3, c_rarg1);
2323 __ ldrb(r3, Address(r3, Klass::misc_flags_offset()));
2324 Label skip_register_finalizer;
2325 __ tbz(r3, exact_log2(KlassFlags::_misc_has_finalizer), skip_register_finalizer);
2326
2327 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1);
2328
2329 __ bind(skip_register_finalizer);
2330 }
2331
2332 // Issue a StoreStore barrier after all stores but before return
2333 // from any constructor for any class with a final field. We don't
2334 // know if this is a finalizer, so we always do so.
2335 if (_desc->bytecode() == Bytecodes::_return)
2336 __ membar(MacroAssembler::StoreStore);
2337
2338 if (_desc->bytecode() != Bytecodes::_return_register_finalizer) {
2339 Label no_safepoint;
2340 __ ldr(rscratch1, Address(rthread, JavaThread::polling_word_offset()));
2341 __ tbz(rscratch1, log2i_exact(SafepointMechanism::poll_bit()), no_safepoint);
2342 __ push(state);
2343 __ push_cont_fastpath(rthread);
2344 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint));
2345 __ pop_cont_fastpath(rthread);
2346 __ pop(state);
2347 __ bind(no_safepoint);
2348 }
2349
2350 // Narrow result if state is itos but result type is smaller.
2351 // Need to narrow in the return bytecode rather than in generate_return_entry
2352 // since compiled code callers expect the result to already be narrowed.
2353 if (state == itos) {
2354 __ narrow(r0);
2355 }
2356
2357 __ remove_activation(state);
2358 __ ret(lr);
2359 }
2360
2361 // ----------------------------------------------------------------------------
2362 // Volatile variables demand their effects be made known to all CPU's
2363 // in order. Store buffers on most chips allow reads & writes to
2364 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode
2365 // without some kind of memory barrier (i.e., it's not sufficient that
2366 // the interpreter does not reorder volatile references, the hardware
2367 // also must not reorder them).
2368 //
2369 // According to the new Java Memory Model (JMM):
2370 // (1) All volatiles are serialized wrt to each other. ALSO reads &
2371 // writes act as acquire & release, so:
2372 // (2) A read cannot let unrelated NON-volatile memory refs that
2373 // happen after the read float up to before the read. It's OK for
2374 // non-volatile memory refs that happen before the volatile read to
2375 // float down below it.
2376 // (3) Similar a volatile write cannot let unrelated NON-volatile
2377 // memory refs that happen BEFORE the write float down to after the
2378 // write. It's OK for non-volatile memory refs that happen after the
2379 // volatile write to float up before it.
2380 //
2381 // We only put in barriers around volatile refs (they are expensive),
2382 // not _between_ memory refs (that would require us to track the
2383 // flavor of the previous memory refs). Requirements (2) and (3)
2384 // require some barriers before volatile stores and after volatile
2385 // loads. These nearly cover requirement (1) but miss the
2386 // volatile-store-volatile-load case. This final case is placed after
2387 // volatile-stores although it could just as well go before
2388 // volatile-loads.
2389
2390 void TemplateTable::resolve_cache_and_index_for_method(int byte_no,
2391 Register Rcache,
2392 Register index) {
2393 const Register temp = r19;
2394 assert_different_registers(Rcache, index, temp);
2395 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
2396
2397 Label resolved, clinit_barrier_slow;
2398
2399 Bytecodes::Code code = bytecode();
2400 __ load_method_entry(Rcache, index);
2401 switch(byte_no) {
2402 case f1_byte:
2403 __ lea(temp, Address(Rcache, in_bytes(ResolvedMethodEntry::bytecode1_offset())));
2404 break;
2405 case f2_byte:
2406 __ lea(temp, Address(Rcache, in_bytes(ResolvedMethodEntry::bytecode2_offset())));
2407 break;
2408 }
2409 // Load-acquire the bytecode to match store-release in InterpreterRuntime
2410 __ ldarb(temp, temp);
2411 __ subs(zr, temp, (int) code); // have we resolved this bytecode?
2412 __ br(Assembler::EQ, resolved);
2413
2414 // resolve first time through
2415 // Class initialization barrier slow path lands here as well.
2416 __ bind(clinit_barrier_slow);
2417 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
2418 __ mov(temp, (int) code);
2419 __ call_VM(noreg, entry, temp);
2420
2421 // Update registers with resolved info
2422 __ load_method_entry(Rcache, index);
2423 // n.b. unlike x86 Rcache is now rcpool plus the indexed offset
2424 // so all clients ofthis method must be modified accordingly
2425 __ bind(resolved);
2426
2427 // Class initialization barrier for static methods
2428 if (VM_Version::supports_fast_class_init_checks() && bytecode() == Bytecodes::_invokestatic) {
2429 __ ldr(temp, Address(Rcache, in_bytes(ResolvedMethodEntry::method_offset())));
2430 __ load_method_holder(temp, temp);
2431 __ clinit_barrier(temp, rscratch1, nullptr, &clinit_barrier_slow);
2432 }
2433 }
2434
2435 void TemplateTable::resolve_cache_and_index_for_field(int byte_no,
2436 Register Rcache,
2437 Register index) {
2438 const Register temp = r19;
2439 assert_different_registers(Rcache, index, temp);
2440
2441 Label resolved;
2442
2443 Bytecodes::Code code = bytecode();
2444 switch (code) {
2445 case Bytecodes::_nofast_getfield: code = Bytecodes::_getfield; break;
2446 case Bytecodes::_nofast_putfield: code = Bytecodes::_putfield; break;
2447 default: break;
2448 }
2449
2450 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
2451 __ load_field_entry(Rcache, index);
2452 if (byte_no == f1_byte) {
2453 __ lea(temp, Address(Rcache, in_bytes(ResolvedFieldEntry::get_code_offset())));
2454 } else {
2455 __ lea(temp, Address(Rcache, in_bytes(ResolvedFieldEntry::put_code_offset())));
2456 }
2457 // Load-acquire the bytecode to match store-release in ResolvedFieldEntry::fill_in()
2458 __ ldarb(temp, temp);
2459 __ subs(zr, temp, (int) code); // have we resolved this bytecode?
2460 __ br(Assembler::EQ, resolved);
2461
2462 // resolve first time through
2463 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
2464 __ mov(temp, (int) code);
2465 __ call_VM(noreg, entry, temp);
2466
2467 // Update registers with resolved info
2468 __ load_field_entry(Rcache, index);
2469 __ bind(resolved);
2470 }
2471
2472 void TemplateTable::load_resolved_field_entry(Register obj,
2473 Register cache,
2474 Register tos_state,
2475 Register offset,
2476 Register flags,
2477 bool is_static = false) {
2478 assert_different_registers(cache, tos_state, flags, offset);
2479
2480 // Field offset
2481 __ load_sized_value(offset, Address(cache, in_bytes(ResolvedFieldEntry::field_offset_offset())), sizeof(int), true /*is_signed*/);
2482
2483 // Flags
2484 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedFieldEntry::flags_offset())));
2485
2486 // TOS state
2487 if (tos_state != noreg) {
2488 __ load_unsigned_byte(tos_state, Address(cache, in_bytes(ResolvedFieldEntry::type_offset())));
2489 }
2490
2491 // Klass overwrite register
2492 if (is_static) {
2493 __ ldr(obj, Address(cache, ResolvedFieldEntry::field_holder_offset()));
2494 const int mirror_offset = in_bytes(Klass::java_mirror_offset());
2495 __ ldr(obj, Address(obj, mirror_offset));
2496 __ resolve_oop_handle(obj, r5, rscratch2);
2497 }
2498 }
2499
2500 void TemplateTable::load_resolved_method_entry_special_or_static(Register cache,
2501 Register method,
2502 Register flags) {
2503
2504 // setup registers
2505 const Register index = flags;
2506 assert_different_registers(method, cache, flags);
2507
2508 // determine constant pool cache field offsets
2509 resolve_cache_and_index_for_method(f1_byte, cache, index);
2510 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
2511 __ ldr(method, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2512 }
2513
2514 void TemplateTable::load_resolved_method_entry_handle(Register cache,
2515 Register method,
2516 Register ref_index,
2517 Register flags) {
2518 // setup registers
2519 const Register index = ref_index;
2520 assert_different_registers(method, flags);
2521 assert_different_registers(method, cache, index);
2522
2523 // determine constant pool cache field offsets
2524 resolve_cache_and_index_for_method(f1_byte, cache, index);
2525 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
2526
2527 // maybe push appendix to arguments (just before return address)
2528 Label L_no_push;
2529 __ tbz(flags, ResolvedMethodEntry::has_appendix_shift, L_no_push);
2530 // invokehandle uses an index into the resolved references array
2531 __ load_unsigned_short(ref_index, Address(cache, in_bytes(ResolvedMethodEntry::resolved_references_index_offset())));
2532 // Push the appendix as a trailing parameter.
2533 // This must be done before we get the receiver,
2534 // since the parameter_size includes it.
2535 Register appendix = method;
2536 __ load_resolved_reference_at_index(appendix, ref_index);
2537 __ push(appendix); // push appendix (MethodType, CallSite, etc.)
2538 __ bind(L_no_push);
2539
2540 __ ldr(method, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2541 }
2542
2543 void TemplateTable::load_resolved_method_entry_interface(Register cache,
2544 Register klass,
2545 Register method_or_table_index,
2546 Register flags) {
2547 // setup registers
2548 const Register index = method_or_table_index;
2549 assert_different_registers(method_or_table_index, cache, flags);
2550
2551 // determine constant pool cache field offsets
2552 resolve_cache_and_index_for_method(f1_byte, cache, index);
2553 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
2554
2555 // Invokeinterface can behave in different ways:
2556 // If calling a method from java.lang.Object, the forced virtual flag is true so the invocation will
2557 // behave like an invokevirtual call. The state of the virtual final flag will determine whether a method or
2558 // vtable index is placed in the register.
2559 // Otherwise, the registers will be populated with the klass and method.
2560
2561 Label NotVirtual; Label NotVFinal; Label Done;
2562 __ tbz(flags, ResolvedMethodEntry::is_forced_virtual_shift, NotVirtual);
2563 __ tbz(flags, ResolvedMethodEntry::is_vfinal_shift, NotVFinal);
2564 __ ldr(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2565 __ b(Done);
2566
2567 __ bind(NotVFinal);
2568 __ load_unsigned_short(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::table_index_offset())));
2569 __ b(Done);
2570
2571 __ bind(NotVirtual);
2572 __ ldr(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2573 __ ldr(klass, Address(cache, in_bytes(ResolvedMethodEntry::klass_offset())));
2574 __ bind(Done);
2575 }
2576
2577 void TemplateTable::load_resolved_method_entry_virtual(Register cache,
2578 Register method_or_table_index,
2579 Register flags) {
2580 // setup registers
2581 const Register index = flags;
2582 assert_different_registers(method_or_table_index, cache, flags);
2583
2584 // determine constant pool cache field offsets
2585 resolve_cache_and_index_for_method(f2_byte, cache, index);
2586 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
2587
2588 // method_or_table_index can either be an itable index or a method depending on the virtual final flag
2589 Label NotVFinal; Label Done;
2590 __ tbz(flags, ResolvedMethodEntry::is_vfinal_shift, NotVFinal);
2591 __ ldr(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2592 __ b(Done);
2593
2594 __ bind(NotVFinal);
2595 __ load_unsigned_short(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::table_index_offset())));
2596 __ bind(Done);
2597 }
2598
2599 // The rmethod register is input and overwritten to be the adapter method for the
2600 // indy call. Link Register (lr) is set to the return address for the adapter and
2601 // an appendix may be pushed to the stack. Registers r0-r3 are clobbered
2602 void TemplateTable::load_invokedynamic_entry(Register method) {
2603 // setup registers
2604 const Register appendix = r0;
2605 const Register cache = r2;
2606 const Register index = r3;
2607 assert_different_registers(method, appendix, cache, index, rcpool);
2608
2609 __ save_bcp();
2610
2611 Label resolved;
2612
2613 __ load_resolved_indy_entry(cache, index);
2614 // Load-acquire the adapter method to match store-release in ResolvedIndyEntry::fill_in()
2615 __ lea(method, Address(cache, in_bytes(ResolvedIndyEntry::method_offset())));
2616 __ ldar(method, method);
2617
2618 // Compare the method to zero
2619 __ cbnz(method, resolved);
2620
2621 Bytecodes::Code code = bytecode();
2622
2623 // Call to the interpreter runtime to resolve invokedynamic
2624 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
2625 __ mov(method, code); // this is essentially Bytecodes::_invokedynamic
2626 __ call_VM(noreg, entry, method);
2627 // Update registers with resolved info
2628 __ load_resolved_indy_entry(cache, index);
2629 // Load-acquire the adapter method to match store-release in ResolvedIndyEntry::fill_in()
2630 __ lea(method, Address(cache, in_bytes(ResolvedIndyEntry::method_offset())));
2631 __ ldar(method, method);
2632
2633 #ifdef ASSERT
2634 __ cbnz(method, resolved);
2635 __ stop("Should be resolved by now");
2636 #endif // ASSERT
2637 __ bind(resolved);
2638
2639 Label L_no_push;
2640 // Check if there is an appendix
2641 __ load_unsigned_byte(index, Address(cache, in_bytes(ResolvedIndyEntry::flags_offset())));
2642 __ tbz(index, ResolvedIndyEntry::has_appendix_shift, L_no_push);
2643
2644 // Get appendix
2645 __ load_unsigned_short(index, Address(cache, in_bytes(ResolvedIndyEntry::resolved_references_index_offset())));
2646 // Push the appendix as a trailing parameter
2647 // since the parameter_size includes it.
2648 __ push(method);
2649 __ mov(method, index);
2650 __ load_resolved_reference_at_index(appendix, method);
2651 __ verify_oop(appendix);
2652 __ pop(method);
2653 __ push(appendix); // push appendix (MethodType, CallSite, etc.)
2654 __ bind(L_no_push);
2655
2656 // compute return type
2657 __ load_unsigned_byte(index, Address(cache, in_bytes(ResolvedIndyEntry::result_type_offset())));
2658 // load return address
2659 // Return address is loaded into link register(lr) and not pushed to the stack
2660 // like x86
2661 {
2662 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
2663 __ mov(rscratch1, table_addr);
2664 __ ldr(lr, Address(rscratch1, index, Address::lsl(3)));
2665 }
2666 }
2667
2668 // The registers cache and index expected to be set before call.
2669 // Correct values of the cache and index registers are preserved.
2670 void TemplateTable::jvmti_post_field_access(Register cache, Register index,
2671 bool is_static, bool has_tos) {
2672 // do the JVMTI work here to avoid disturbing the register state below
2673 // We use c_rarg registers here because we want to use the register used in
2674 // the call to the VM
2675 if (JvmtiExport::can_post_field_access()) {
2676 // Check to see if a field access watch has been set before we
2677 // take the time to call into the VM.
2678 Label L1;
2679 assert_different_registers(cache, index, r0);
2680 __ lea(rscratch1, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
2681 __ ldrw(r0, Address(rscratch1));
2682 __ cbzw(r0, L1);
2683
2684 __ load_field_entry(c_rarg2, index);
2685
2686 if (is_static) {
2687 __ mov(c_rarg1, zr); // null object reference
2688 } else {
2689 __ ldr(c_rarg1, at_tos()); // get object pointer without popping it
2690 __ verify_oop(c_rarg1);
2691 }
2692 // c_rarg1: object pointer or null
2693 // c_rarg2: cache entry pointer
2694 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
2695 InterpreterRuntime::post_field_access),
2696 c_rarg1, c_rarg2);
2697 __ load_field_entry(cache, index);
2698 __ bind(L1);
2699 }
2700 }
2701
2702 void TemplateTable::pop_and_check_object(Register r)
2703 {
2704 __ pop_ptr(r);
2705 __ null_check(r); // for field access must check obj.
2706 __ verify_oop(r);
2707 }
2708
2709 void TemplateTable::getfield_or_static(int byte_no, bool is_static, RewriteControl rc)
2710 {
2711 const Register cache = r2;
2712 const Register obj = r4;
2713 const Register klass = r5;
2714 const Register inline_klass = r7;
2715 const Register field_index = r23;
2716 const Register index = r3;
2717 const Register tos_state = r3;
2718 const Register off = r19;
2719 const Register flags = r6;
2720 const Register bc = r4; // uses same reg as obj, so don't mix them
2721
2722 resolve_cache_and_index_for_field(byte_no, cache, index);
2723 jvmti_post_field_access(cache, index, is_static, false);
2724
2725 // Valhalla extras
2726 __ load_unsigned_short(field_index, Address(cache, in_bytes(ResolvedFieldEntry::field_index_offset())));
2727 __ ldr(klass, Address(cache, ResolvedFieldEntry::field_holder_offset()));
2728
2729 load_resolved_field_entry(obj, cache, tos_state, off, flags, is_static);
2730
2731 if (!is_static) {
2732 // obj is on the stack
2733 pop_and_check_object(obj);
2734 }
2735
2736 // 8179954: We need to make sure that the code generated for
2737 // volatile accesses forms a sequentially-consistent set of
2738 // operations when combined with STLR and LDAR. Without a leading
2739 // membar it's possible for a simple Dekker test to fail if loads
2740 // use LDR;DMB but stores use STLR. This can happen if C2 compiles
2741 // the stores in one method and we interpret the loads in another.
2742 if (!CompilerConfig::is_c1_or_interpreter_only_no_jvmci()){
2743 Label notVolatile;
2744 __ tbz(flags, ResolvedFieldEntry::is_volatile_shift, notVolatile);
2745 __ membar(MacroAssembler::AnyAny);
2746 __ bind(notVolatile);
2747 }
2748
2749 const Address field(obj, off);
2750
2751 Label Done, notByte, notBool, notInt, notShort, notChar,
2752 notLong, notFloat, notObj, notDouble;
2753
2754 assert(btos == 0, "change code, btos != 0");
2755 __ cbnz(tos_state, notByte);
2756
2757 // Don't rewrite getstatic, only getfield
2758 if (is_static) rc = may_not_rewrite;
2759
2760 // btos
2761 __ access_load_at(T_BYTE, IN_HEAP, r0, field, noreg, noreg);
2762 __ push(btos);
2763 // Rewrite bytecode to be faster
2764 if (rc == may_rewrite) {
2765 patch_bytecode(Bytecodes::_fast_bgetfield, bc, r1);
2766 }
2767 __ b(Done);
2768
2769 __ bind(notByte);
2770 __ cmp(tos_state, (u1)ztos);
2771 __ br(Assembler::NE, notBool);
2772
2773 // ztos (same code as btos)
2774 __ access_load_at(T_BOOLEAN, IN_HEAP, r0, field, noreg, noreg);
2775 __ push(ztos);
2776 // Rewrite bytecode to be faster
2777 if (rc == may_rewrite) {
2778 // use btos rewriting, no truncating to t/f bit is needed for getfield.
2779 patch_bytecode(Bytecodes::_fast_bgetfield, bc, r1);
2780 }
2781 __ b(Done);
2782
2783 __ bind(notBool);
2784 __ cmp(tos_state, (u1)atos);
2785 __ br(Assembler::NE, notObj);
2786 // atos
2787 if (!EnableValhalla) {
2788 do_oop_load(_masm, field, r0, IN_HEAP);
2789 __ push(atos);
2790 if (rc == may_rewrite) {
2791 patch_bytecode(Bytecodes::_fast_agetfield, bc, r1);
2792 }
2793 __ b(Done);
2794 } else { // Valhalla
2795 if (is_static) {
2796 __ load_heap_oop(r0, field, rscratch1, rscratch2);
2797 Label is_null_free_inline_type, uninitialized;
2798 // Issue below if the static field has not been initialized yet
2799 __ test_field_is_null_free_inline_type(flags, noreg /*temp*/, is_null_free_inline_type);
2800 // field is not a null free inline type
2801 __ push(atos);
2802 __ b(Done);
2803 // field is a null free inline type, must not return null even if uninitialized
2804 __ bind(is_null_free_inline_type);
2805 __ cbz(r0, uninitialized);
2806 __ push(atos);
2807 __ b(Done);
2808 __ bind(uninitialized);
2809 Label slow_case, finish;
2810 __ ldrb(rscratch1, Address(klass, InstanceKlass::init_state_offset()));
2811 __ cmp(rscratch1, (u1)InstanceKlass::fully_initialized);
2812 __ br(Assembler::NE, slow_case);
2813 __ get_default_value_oop(klass, off /* temp */, r0);
2814 __ b(finish);
2815 __ bind(slow_case);
2816 __ call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::uninitialized_static_inline_type_field), obj, cache);
2817 __ bind(finish);
2818 __ verify_oop(r0);
2819 __ push(atos);
2820 __ b(Done);
2821 } else {
2822 Label is_flat, nonnull, is_inline_type, has_null_marker, rewrite_inline;
2823 __ test_field_is_null_free_inline_type(flags, noreg /*temp*/, is_inline_type);
2824 __ test_field_has_null_marker(flags, noreg /*temp*/, has_null_marker);
2825 // Non-inline field case
2826 __ load_heap_oop(r0, field, rscratch1, rscratch2);
2827 __ push(atos);
2828 if (rc == may_rewrite) {
2829 patch_bytecode(Bytecodes::_fast_agetfield, bc, r1);
2830 }
2831 __ b(Done);
2832 __ bind(is_inline_type);
2833 __ test_field_is_flat(flags, noreg /* temp */, is_flat);
2834 // field is not flat
2835 __ load_heap_oop(r0, field, rscratch1, rscratch2);
2836 __ cbnz(r0, nonnull);
2837 __ get_inline_type_field_klass(klass, field_index, inline_klass);
2838 __ get_default_value_oop(inline_klass, klass /* temp */, r0);
2839 __ bind(nonnull);
2840 __ verify_oop(r0);
2841 __ push(atos);
2842 __ b(rewrite_inline);
2843 __ bind(is_flat);
2844 // field is flat
2845 __ mov(r0, obj);
2846 __ read_flat_field(klass, field_index, off, inline_klass /* temp */, r0);
2847 __ verify_oop(r0);
2848 __ push(atos);
2849 __ b(rewrite_inline);
2850 __ bind(has_null_marker);
2851 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::read_nullable_flat_field), obj, cache);
2852 __ verify_oop(r0);
2853 __ push(atos);
2854 __ bind(rewrite_inline);
2855 if (rc == may_rewrite) {
2856 patch_bytecode(Bytecodes::_fast_vgetfield, bc, r1);
2857 }
2858 __ b(Done);
2859 }
2860 }
2861
2862 __ bind(notObj);
2863 __ cmp(tos_state, (u1)itos);
2864 __ br(Assembler::NE, notInt);
2865 // itos
2866 __ access_load_at(T_INT, IN_HEAP, r0, field, noreg, noreg);
2867 __ push(itos);
2868 // Rewrite bytecode to be faster
2869 if (rc == may_rewrite) {
2870 patch_bytecode(Bytecodes::_fast_igetfield, bc, r1);
2871 }
2872 __ b(Done);
2873
2874 __ bind(notInt);
2875 __ cmp(tos_state, (u1)ctos);
2876 __ br(Assembler::NE, notChar);
2877 // ctos
2878 __ access_load_at(T_CHAR, IN_HEAP, r0, field, noreg, noreg);
2879 __ push(ctos);
2880 // Rewrite bytecode to be faster
2881 if (rc == may_rewrite) {
2882 patch_bytecode(Bytecodes::_fast_cgetfield, bc, r1);
2883 }
2884 __ b(Done);
2885
2886 __ bind(notChar);
2887 __ cmp(tos_state, (u1)stos);
2888 __ br(Assembler::NE, notShort);
2889 // stos
2890 __ access_load_at(T_SHORT, IN_HEAP, r0, field, noreg, noreg);
2891 __ push(stos);
2892 // Rewrite bytecode to be faster
2893 if (rc == may_rewrite) {
2894 patch_bytecode(Bytecodes::_fast_sgetfield, bc, r1);
2895 }
2896 __ b(Done);
2897
2898 __ bind(notShort);
2899 __ cmp(tos_state, (u1)ltos);
2900 __ br(Assembler::NE, notLong);
2901 // ltos
2902 __ access_load_at(T_LONG, IN_HEAP, r0, field, noreg, noreg);
2903 __ push(ltos);
2904 // Rewrite bytecode to be faster
2905 if (rc == may_rewrite) {
2906 patch_bytecode(Bytecodes::_fast_lgetfield, bc, r1);
2907 }
2908 __ b(Done);
2909
2910 __ bind(notLong);
2911 __ cmp(tos_state, (u1)ftos);
2912 __ br(Assembler::NE, notFloat);
2913 // ftos
2914 __ access_load_at(T_FLOAT, IN_HEAP, noreg /* ftos */, field, noreg, noreg);
2915 __ push(ftos);
2916 // Rewrite bytecode to be faster
2917 if (rc == may_rewrite) {
2918 patch_bytecode(Bytecodes::_fast_fgetfield, bc, r1);
2919 }
2920 __ b(Done);
2921
2922 __ bind(notFloat);
2923 #ifdef ASSERT
2924 __ cmp(tos_state, (u1)dtos);
2925 __ br(Assembler::NE, notDouble);
2926 #endif
2927 // dtos
2928 __ access_load_at(T_DOUBLE, IN_HEAP, noreg /* ftos */, field, noreg, noreg);
2929 __ push(dtos);
2930 // Rewrite bytecode to be faster
2931 if (rc == may_rewrite) {
2932 patch_bytecode(Bytecodes::_fast_dgetfield, bc, r1);
2933 }
2934 #ifdef ASSERT
2935 __ b(Done);
2936
2937 __ bind(notDouble);
2938 __ stop("Bad state");
2939 #endif
2940
2941 __ bind(Done);
2942
2943 Label notVolatile;
2944 __ tbz(flags, ResolvedFieldEntry::is_volatile_shift, notVolatile);
2945 __ membar(MacroAssembler::LoadLoad | MacroAssembler::LoadStore);
2946 __ bind(notVolatile);
2947 }
2948
2949
2950 void TemplateTable::getfield(int byte_no)
2951 {
2952 getfield_or_static(byte_no, false);
2953 }
2954
2955 void TemplateTable::nofast_getfield(int byte_no) {
2956 getfield_or_static(byte_no, false, may_not_rewrite);
2957 }
2958
2959 void TemplateTable::getstatic(int byte_no)
2960 {
2961 getfield_or_static(byte_no, true);
2962 }
2963
2964 // The registers cache and index expected to be set before call.
2965 // The function may destroy various registers, just not the cache and index registers.
2966 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) {
2967 transition(vtos, vtos);
2968
2969 if (JvmtiExport::can_post_field_modification()) {
2970 // Check to see if a field modification watch has been set before
2971 // we take the time to call into the VM.
2972 Label L1;
2973 assert_different_registers(cache, index, r0);
2974 __ lea(rscratch1, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
2975 __ ldrw(r0, Address(rscratch1));
2976 __ cbz(r0, L1);
2977
2978 __ mov(c_rarg2, cache);
2979
2980 if (is_static) {
2981 // Life is simple. Null out the object pointer.
2982 __ mov(c_rarg1, zr);
2983 } else {
2984 // Life is harder. The stack holds the value on top, followed by
2985 // the object. We don't know the size of the value, though; it
2986 // could be one or two words depending on its type. As a result,
2987 // we must find the type to determine where the object is.
2988 __ load_unsigned_byte(c_rarg3, Address(c_rarg2, in_bytes(ResolvedFieldEntry::type_offset())));
2989 Label nope2, done, ok;
2990 __ ldr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue
2991 __ cmpw(c_rarg3, ltos);
2992 __ br(Assembler::EQ, ok);
2993 __ cmpw(c_rarg3, dtos);
2994 __ br(Assembler::NE, nope2);
2995 __ bind(ok);
2996 __ ldr(c_rarg1, at_tos_p2()); // ltos (two word jvalue)
2997 __ bind(nope2);
2998 }
2999 // object (tos)
3000 __ mov(c_rarg3, esp);
3001 // c_rarg1: object pointer set up above (null if static)
3002 // c_rarg2: cache entry pointer
3003 // c_rarg3: jvalue object on the stack
3004 __ call_VM(noreg,
3005 CAST_FROM_FN_PTR(address,
3006 InterpreterRuntime::post_field_modification),
3007 c_rarg1, c_rarg2, c_rarg3);
3008 __ load_field_entry(cache, index);
3009 __ bind(L1);
3010 }
3011 }
3012
3013 void TemplateTable::putfield_or_static(int byte_no, bool is_static, RewriteControl rc) {
3014 transition(vtos, vtos);
3015
3016 const Register cache = r2;
3017 const Register index = r3;
3018 const Register tos_state = r3;
3019 const Register obj = r2;
3020 const Register off = r19;
3021 const Register flags = r6;
3022 const Register bc = r4;
3023 const Register inline_klass = r5;
3024
3025 resolve_cache_and_index_for_field(byte_no, cache, index);
3026 jvmti_post_field_mod(cache, index, is_static);
3027 load_resolved_field_entry(obj, cache, tos_state, off, flags, is_static);
3028
3029 Label Done;
3030 {
3031 Label notVolatile;
3032 __ tbz(flags, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3033 __ membar(MacroAssembler::StoreStore | MacroAssembler::LoadStore);
3034 __ bind(notVolatile);
3035 }
3036
3037 // field address
3038 const Address field(obj, off);
3039
3040 Label notByte, notBool, notInt, notShort, notChar,
3041 notLong, notFloat, notObj, notDouble;
3042
3043 assert(btos == 0, "change code, btos != 0");
3044 __ cbnz(tos_state, notByte);
3045
3046 // Don't rewrite putstatic, only putfield
3047 if (is_static) rc = may_not_rewrite;
3048
3049 // btos
3050 {
3051 __ pop(btos);
3052 if (!is_static) pop_and_check_object(obj);
3053 __ access_store_at(T_BYTE, IN_HEAP, field, r0, noreg, noreg, noreg);
3054 if (rc == may_rewrite) {
3055 patch_bytecode(Bytecodes::_fast_bputfield, bc, r1, true, byte_no);
3056 }
3057 __ b(Done);
3058 }
3059
3060 __ bind(notByte);
3061 __ cmp(tos_state, (u1)ztos);
3062 __ br(Assembler::NE, notBool);
3063
3064 // ztos
3065 {
3066 __ pop(ztos);
3067 if (!is_static) pop_and_check_object(obj);
3068 __ access_store_at(T_BOOLEAN, IN_HEAP, field, r0, noreg, noreg, noreg);
3069 if (rc == may_rewrite) {
3070 patch_bytecode(Bytecodes::_fast_zputfield, bc, r1, true, byte_no);
3071 }
3072 __ b(Done);
3073 }
3074
3075 __ bind(notBool);
3076 __ cmp(tos_state, (u1)atos);
3077 __ br(Assembler::NE, notObj);
3078
3079 // atos
3080 {
3081 if (!EnableValhalla) {
3082 __ pop(atos);
3083 if (!is_static) pop_and_check_object(obj);
3084 // Store into the field
3085 do_oop_store(_masm, field, r0, IN_HEAP);
3086 if (rc == may_rewrite) {
3087 patch_bytecode(Bytecodes::_fast_aputfield, bc, r1, true, byte_no);
3088 }
3089 __ b(Done);
3090 } else { // Valhalla
3091 __ pop(atos);
3092 if (is_static) {
3093 Label is_inline_type;
3094 __ test_field_is_not_null_free_inline_type(flags, noreg /* temp */, is_inline_type);
3095 __ null_check(r0);
3096 __ bind(is_inline_type);
3097 do_oop_store(_masm, field, r0, IN_HEAP);
3098 __ b(Done);
3099 } else {
3100 Label is_inline_type, is_flat, has_null_marker, rewrite_not_inline, rewrite_inline;
3101 __ test_field_is_null_free_inline_type(flags, noreg /*temp*/, is_inline_type);
3102 __ test_field_has_null_marker(flags, noreg /*temp*/, has_null_marker);
3103 // Not an inline type
3104 pop_and_check_object(obj);
3105 // Store into the field
3106 do_oop_store(_masm, field, r0, IN_HEAP);
3107 __ bind(rewrite_not_inline);
3108 if (rc == may_rewrite) {
3109 patch_bytecode(Bytecodes::_fast_aputfield, bc, r19, true, byte_no);
3110 }
3111 __ b(Done);
3112 // Implementation of the inline type semantic
3113 __ bind(is_inline_type);
3114 __ null_check(r0);
3115 __ test_field_is_flat(flags, noreg /*temp*/, is_flat);
3116 // field is not flat
3117 pop_and_check_object(obj);
3118 // Store into the field
3119 do_oop_store(_masm, field, r0, IN_HEAP);
3120 __ b(rewrite_inline);
3121 __ bind(is_flat);
3122 // field is flat
3123 pop_and_check_object(obj);
3124 assert_different_registers(r0, inline_klass, obj, off);
3125 __ load_klass(inline_klass, r0);
3126 __ data_for_oop(r0, r0, inline_klass);
3127 __ add(obj, obj, off);
3128 __ access_value_copy(IN_HEAP, r0, obj, inline_klass);
3129 __ b(rewrite_inline);
3130 __ bind(has_null_marker);
3131 assert_different_registers(r0, cache, r19);
3132 pop_and_check_object(r19);
3133 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::write_nullable_flat_field), r19, r0, cache);
3134 __ bind(rewrite_inline);
3135 if (rc == may_rewrite) {
3136 patch_bytecode(Bytecodes::_fast_vputfield, bc, r19, true, byte_no);
3137 }
3138 __ b(Done);
3139 }
3140 } // Valhalla
3141 }
3142
3143 __ bind(notObj);
3144 __ cmp(tos_state, (u1)itos);
3145 __ br(Assembler::NE, notInt);
3146
3147 // itos
3148 {
3149 __ pop(itos);
3150 if (!is_static) pop_and_check_object(obj);
3151 __ access_store_at(T_INT, IN_HEAP, field, r0, noreg, noreg, noreg);
3152 if (rc == may_rewrite) {
3153 patch_bytecode(Bytecodes::_fast_iputfield, bc, r1, true, byte_no);
3154 }
3155 __ b(Done);
3156 }
3157
3158 __ bind(notInt);
3159 __ cmp(tos_state, (u1)ctos);
3160 __ br(Assembler::NE, notChar);
3161
3162 // ctos
3163 {
3164 __ pop(ctos);
3165 if (!is_static) pop_and_check_object(obj);
3166 __ access_store_at(T_CHAR, IN_HEAP, field, r0, noreg, noreg, noreg);
3167 if (rc == may_rewrite) {
3168 patch_bytecode(Bytecodes::_fast_cputfield, bc, r1, true, byte_no);
3169 }
3170 __ b(Done);
3171 }
3172
3173 __ bind(notChar);
3174 __ cmp(tos_state, (u1)stos);
3175 __ br(Assembler::NE, notShort);
3176
3177 // stos
3178 {
3179 __ pop(stos);
3180 if (!is_static) pop_and_check_object(obj);
3181 __ access_store_at(T_SHORT, IN_HEAP, field, r0, noreg, noreg, noreg);
3182 if (rc == may_rewrite) {
3183 patch_bytecode(Bytecodes::_fast_sputfield, bc, r1, true, byte_no);
3184 }
3185 __ b(Done);
3186 }
3187
3188 __ bind(notShort);
3189 __ cmp(tos_state, (u1)ltos);
3190 __ br(Assembler::NE, notLong);
3191
3192 // ltos
3193 {
3194 __ pop(ltos);
3195 if (!is_static) pop_and_check_object(obj);
3196 __ access_store_at(T_LONG, IN_HEAP, field, r0, noreg, noreg, noreg);
3197 if (rc == may_rewrite) {
3198 patch_bytecode(Bytecodes::_fast_lputfield, bc, r1, true, byte_no);
3199 }
3200 __ b(Done);
3201 }
3202
3203 __ bind(notLong);
3204 __ cmp(tos_state, (u1)ftos);
3205 __ br(Assembler::NE, notFloat);
3206
3207 // ftos
3208 {
3209 __ pop(ftos);
3210 if (!is_static) pop_and_check_object(obj);
3211 __ access_store_at(T_FLOAT, IN_HEAP, field, noreg /* ftos */, noreg, noreg, noreg);
3212 if (rc == may_rewrite) {
3213 patch_bytecode(Bytecodes::_fast_fputfield, bc, r1, true, byte_no);
3214 }
3215 __ b(Done);
3216 }
3217
3218 __ bind(notFloat);
3219 #ifdef ASSERT
3220 __ cmp(tos_state, (u1)dtos);
3221 __ br(Assembler::NE, notDouble);
3222 #endif
3223
3224 // dtos
3225 {
3226 __ pop(dtos);
3227 if (!is_static) pop_and_check_object(obj);
3228 __ access_store_at(T_DOUBLE, IN_HEAP, field, noreg /* dtos */, noreg, noreg, noreg);
3229 if (rc == may_rewrite) {
3230 patch_bytecode(Bytecodes::_fast_dputfield, bc, r1, true, byte_no);
3231 }
3232 }
3233
3234 #ifdef ASSERT
3235 __ b(Done);
3236
3237 __ bind(notDouble);
3238 __ stop("Bad state");
3239 #endif
3240
3241 __ bind(Done);
3242
3243 {
3244 Label notVolatile;
3245 __ tbz(flags, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3246 __ membar(MacroAssembler::StoreLoad | MacroAssembler::StoreStore);
3247 __ bind(notVolatile);
3248 }
3249 }
3250
3251 void TemplateTable::putfield(int byte_no)
3252 {
3253 putfield_or_static(byte_no, false);
3254 }
3255
3256 void TemplateTable::nofast_putfield(int byte_no) {
3257 putfield_or_static(byte_no, false, may_not_rewrite);
3258 }
3259
3260 void TemplateTable::putstatic(int byte_no) {
3261 putfield_or_static(byte_no, true);
3262 }
3263
3264 void TemplateTable::jvmti_post_fast_field_mod() {
3265 if (JvmtiExport::can_post_field_modification()) {
3266 // Check to see if a field modification watch has been set before
3267 // we take the time to call into the VM.
3268 Label L2;
3269 __ lea(rscratch1, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
3270 __ ldrw(c_rarg3, Address(rscratch1));
3271 __ cbzw(c_rarg3, L2);
3272 __ pop_ptr(r19); // copy the object pointer from tos
3273 __ verify_oop(r19);
3274 __ push_ptr(r19); // put the object pointer back on tos
3275 // Save tos values before call_VM() clobbers them. Since we have
3276 // to do it for every data type, we use the saved values as the
3277 // jvalue object.
3278 switch (bytecode()) { // load values into the jvalue object
3279 case Bytecodes::_fast_vputfield: //fall through
3280 case Bytecodes::_fast_aputfield: __ push_ptr(r0); break;
3281 case Bytecodes::_fast_bputfield: // fall through
3282 case Bytecodes::_fast_zputfield: // fall through
3283 case Bytecodes::_fast_sputfield: // fall through
3284 case Bytecodes::_fast_cputfield: // fall through
3285 case Bytecodes::_fast_iputfield: __ push_i(r0); break;
3286 case Bytecodes::_fast_dputfield: __ push_d(); break;
3287 case Bytecodes::_fast_fputfield: __ push_f(); break;
3288 case Bytecodes::_fast_lputfield: __ push_l(r0); break;
3289
3290 default:
3291 ShouldNotReachHere();
3292 }
3293 __ mov(c_rarg3, esp); // points to jvalue on the stack
3294 // access constant pool cache entry
3295 __ load_field_entry(c_rarg2, r0);
3296 __ verify_oop(r19);
3297 // r19: object pointer copied above
3298 // c_rarg2: cache entry pointer
3299 // c_rarg3: jvalue object on the stack
3300 __ call_VM(noreg,
3301 CAST_FROM_FN_PTR(address,
3302 InterpreterRuntime::post_field_modification),
3303 r19, c_rarg2, c_rarg3);
3304
3305 switch (bytecode()) { // restore tos values
3306 case Bytecodes::_fast_vputfield: //fall through
3307 case Bytecodes::_fast_aputfield: __ pop_ptr(r0); break;
3308 case Bytecodes::_fast_bputfield: // fall through
3309 case Bytecodes::_fast_zputfield: // fall through
3310 case Bytecodes::_fast_sputfield: // fall through
3311 case Bytecodes::_fast_cputfield: // fall through
3312 case Bytecodes::_fast_iputfield: __ pop_i(r0); break;
3313 case Bytecodes::_fast_dputfield: __ pop_d(); break;
3314 case Bytecodes::_fast_fputfield: __ pop_f(); break;
3315 case Bytecodes::_fast_lputfield: __ pop_l(r0); break;
3316 default: break;
3317 }
3318 __ bind(L2);
3319 }
3320 }
3321
3322 void TemplateTable::fast_storefield(TosState state)
3323 {
3324 transition(state, vtos);
3325
3326 ByteSize base = ConstantPoolCache::base_offset();
3327
3328 jvmti_post_fast_field_mod();
3329
3330 // access constant pool cache
3331 __ load_field_entry(r2, r1);
3332
3333 // R1: field offset, R2: field holder, R3: flags
3334 load_resolved_field_entry(r2, r2, noreg, r1, r3);
3335
3336 {
3337 Label notVolatile;
3338 __ tbz(r3, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3339 __ membar(MacroAssembler::StoreStore | MacroAssembler::LoadStore);
3340 __ bind(notVolatile);
3341 }
3342
3343 Label notVolatile;
3344
3345 // Get object from stack
3346 pop_and_check_object(r2);
3347
3348 // field address
3349 const Address field(r2, r1);
3350
3351 // access field
3352 switch (bytecode()) {
3353 case Bytecodes::_fast_vputfield:
3354 {
3355 Label is_flat, has_null_marker, done;
3356 __ test_field_has_null_marker(r3, noreg /* temp */, has_null_marker);
3357 __ null_check(r0);
3358 __ test_field_is_flat(r3, noreg /* temp */, is_flat);
3359 // field is not flat
3360 do_oop_store(_masm, field, r0, IN_HEAP);
3361 __ b(done);
3362 __ bind(is_flat);
3363 // field is flat
3364 __ load_klass(r4, r0);
3365 __ data_for_oop(r0, r0, r4);
3366 __ lea(rscratch1, field);
3367 __ access_value_copy(IN_HEAP, r0, rscratch1, r4);
3368 __ b(done);
3369 __ bind(has_null_marker);
3370 __ load_field_entry(r4, r1);
3371 __ mov(r1, r2);
3372 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::write_nullable_flat_field), r1, r0, r4);
3373 __ bind(done);
3374 }
3375 break;
3376 case Bytecodes::_fast_aputfield:
3377 do_oop_store(_masm, field, r0, IN_HEAP);
3378 break;
3379 case Bytecodes::_fast_lputfield:
3380 __ access_store_at(T_LONG, IN_HEAP, field, r0, noreg, noreg, noreg);
3381 break;
3382 case Bytecodes::_fast_iputfield:
3383 __ access_store_at(T_INT, IN_HEAP, field, r0, noreg, noreg, noreg);
3384 break;
3385 case Bytecodes::_fast_zputfield:
3386 __ access_store_at(T_BOOLEAN, IN_HEAP, field, r0, noreg, noreg, noreg);
3387 break;
3388 case Bytecodes::_fast_bputfield:
3389 __ access_store_at(T_BYTE, IN_HEAP, field, r0, noreg, noreg, noreg);
3390 break;
3391 case Bytecodes::_fast_sputfield:
3392 __ access_store_at(T_SHORT, IN_HEAP, field, r0, noreg, noreg, noreg);
3393 break;
3394 case Bytecodes::_fast_cputfield:
3395 __ access_store_at(T_CHAR, IN_HEAP, field, r0, noreg, noreg, noreg);
3396 break;
3397 case Bytecodes::_fast_fputfield:
3398 __ access_store_at(T_FLOAT, IN_HEAP, field, noreg /* ftos */, noreg, noreg, noreg);
3399 break;
3400 case Bytecodes::_fast_dputfield:
3401 __ access_store_at(T_DOUBLE, IN_HEAP, field, noreg /* dtos */, noreg, noreg, noreg);
3402 break;
3403 default:
3404 ShouldNotReachHere();
3405 }
3406
3407 {
3408 Label notVolatile;
3409 __ tbz(r3, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3410 __ membar(MacroAssembler::StoreLoad | MacroAssembler::StoreStore);
3411 __ bind(notVolatile);
3412 }
3413 }
3414
3415
3416 void TemplateTable::fast_accessfield(TosState state)
3417 {
3418 transition(atos, state);
3419 // Do the JVMTI work here to avoid disturbing the register state below
3420 if (JvmtiExport::can_post_field_access()) {
3421 // Check to see if a field access watch has been set before we
3422 // take the time to call into the VM.
3423 Label L1;
3424 __ lea(rscratch1, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
3425 __ ldrw(r2, Address(rscratch1));
3426 __ cbzw(r2, L1);
3427 // access constant pool cache entry
3428 __ load_field_entry(c_rarg2, rscratch2);
3429 __ verify_oop(r0);
3430 __ push_ptr(r0); // save object pointer before call_VM() clobbers it
3431 __ mov(c_rarg1, r0);
3432 // c_rarg1: object pointer copied above
3433 // c_rarg2: cache entry pointer
3434 __ call_VM(noreg,
3435 CAST_FROM_FN_PTR(address,
3436 InterpreterRuntime::post_field_access),
3437 c_rarg1, c_rarg2);
3438 __ pop_ptr(r0); // restore object pointer
3439 __ bind(L1);
3440 }
3441
3442 // access constant pool cache
3443 __ load_field_entry(r2, r1);
3444
3445 __ load_sized_value(r1, Address(r2, in_bytes(ResolvedFieldEntry::field_offset_offset())), sizeof(int), true /*is_signed*/);
3446 __ load_unsigned_byte(r3, Address(r2, in_bytes(ResolvedFieldEntry::flags_offset())));
3447
3448 // r0: object
3449 __ verify_oop(r0);
3450 __ null_check(r0);
3451 const Address field(r0, r1);
3452
3453 // 8179954: We need to make sure that the code generated for
3454 // volatile accesses forms a sequentially-consistent set of
3455 // operations when combined with STLR and LDAR. Without a leading
3456 // membar it's possible for a simple Dekker test to fail if loads
3457 // use LDR;DMB but stores use STLR. This can happen if C2 compiles
3458 // the stores in one method and we interpret the loads in another.
3459 if (!CompilerConfig::is_c1_or_interpreter_only_no_jvmci()) {
3460 Label notVolatile;
3461 __ tbz(r3, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3462 __ membar(MacroAssembler::AnyAny);
3463 __ bind(notVolatile);
3464 }
3465
3466 // access field
3467 switch (bytecode()) {
3468 case Bytecodes::_fast_vgetfield:
3469 {
3470 Register index = r4, klass = r5, inline_klass = r6, tmp = r7;
3471 Label is_flat, has_null_marker, nonnull, Done;
3472 __ test_field_has_null_marker(r3, noreg /*temp*/, has_null_marker);
3473 __ test_field_is_flat(r3, noreg /* temp */, is_flat);
3474 // field is not flat
3475 __ load_heap_oop(r0, field, rscratch1, rscratch2);
3476 __ cbnz(r0, nonnull);
3477 __ load_unsigned_short(index, Address(r2, in_bytes(ResolvedFieldEntry::field_index_offset())));
3478 __ ldr(klass, Address(r2, in_bytes(ResolvedFieldEntry::field_holder_offset())));
3479 __ get_inline_type_field_klass(klass, index, inline_klass);
3480 __ get_default_value_oop(inline_klass, tmp /* temp */, r0);
3481 __ bind(nonnull);
3482 __ verify_oop(r0);
3483 __ b(Done);
3484 __ bind(is_flat);
3485 // field is flat
3486 __ load_unsigned_short(index, Address(r2, in_bytes(ResolvedFieldEntry::field_index_offset())));
3487 __ ldr(klass, Address(r2, in_bytes(ResolvedFieldEntry::field_holder_offset())));
3488 __ read_flat_field(klass, index, r1, tmp /* temp */, r0);
3489 __ verify_oop(r0);
3490 __ b(Done);
3491 __ bind(has_null_marker);
3492 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::read_nullable_flat_field), r0, r2);
3493 __ verify_oop(r0);
3494 __ bind(Done);
3495 }
3496 break;
3497 case Bytecodes::_fast_agetfield:
3498 do_oop_load(_masm, field, r0, IN_HEAP);
3499 __ verify_oop(r0);
3500 break;
3501 case Bytecodes::_fast_lgetfield:
3502 __ access_load_at(T_LONG, IN_HEAP, r0, field, noreg, noreg);
3503 break;
3504 case Bytecodes::_fast_igetfield:
3505 __ access_load_at(T_INT, IN_HEAP, r0, field, noreg, noreg);
3506 break;
3507 case Bytecodes::_fast_bgetfield:
3508 __ access_load_at(T_BYTE, IN_HEAP, r0, field, noreg, noreg);
3509 break;
3510 case Bytecodes::_fast_sgetfield:
3511 __ access_load_at(T_SHORT, IN_HEAP, r0, field, noreg, noreg);
3512 break;
3513 case Bytecodes::_fast_cgetfield:
3514 __ access_load_at(T_CHAR, IN_HEAP, r0, field, noreg, noreg);
3515 break;
3516 case Bytecodes::_fast_fgetfield:
3517 __ access_load_at(T_FLOAT, IN_HEAP, noreg /* ftos */, field, noreg, noreg);
3518 break;
3519 case Bytecodes::_fast_dgetfield:
3520 __ access_load_at(T_DOUBLE, IN_HEAP, noreg /* dtos */, field, noreg, noreg);
3521 break;
3522 default:
3523 ShouldNotReachHere();
3524 }
3525 {
3526 Label notVolatile;
3527 __ tbz(r3, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3528 __ membar(MacroAssembler::LoadLoad | MacroAssembler::LoadStore);
3529 __ bind(notVolatile);
3530 }
3531 }
3532
3533 void TemplateTable::fast_xaccess(TosState state)
3534 {
3535 transition(vtos, state);
3536
3537 // get receiver
3538 __ ldr(r0, aaddress(0));
3539 // access constant pool cache
3540 __ load_field_entry(r2, r3, 2);
3541 __ load_sized_value(r1, Address(r2, in_bytes(ResolvedFieldEntry::field_offset_offset())), sizeof(int), true /*is_signed*/);
3542
3543 // 8179954: We need to make sure that the code generated for
3544 // volatile accesses forms a sequentially-consistent set of
3545 // operations when combined with STLR and LDAR. Without a leading
3546 // membar it's possible for a simple Dekker test to fail if loads
3547 // use LDR;DMB but stores use STLR. This can happen if C2 compiles
3548 // the stores in one method and we interpret the loads in another.
3549 if (!CompilerConfig::is_c1_or_interpreter_only_no_jvmci()) {
3550 Label notVolatile;
3551 __ load_unsigned_byte(r3, Address(r2, in_bytes(ResolvedFieldEntry::flags_offset())));
3552 __ tbz(r3, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3553 __ membar(MacroAssembler::AnyAny);
3554 __ bind(notVolatile);
3555 }
3556
3557 // make sure exception is reported in correct bcp range (getfield is
3558 // next instruction)
3559 __ increment(rbcp);
3560 __ null_check(r0);
3561 switch (state) {
3562 case itos:
3563 __ access_load_at(T_INT, IN_HEAP, r0, Address(r0, r1, Address::lsl(0)), noreg, noreg);
3564 break;
3565 case atos:
3566 do_oop_load(_masm, Address(r0, r1, Address::lsl(0)), r0, IN_HEAP);
3567 __ verify_oop(r0);
3568 break;
3569 case ftos:
3570 __ access_load_at(T_FLOAT, IN_HEAP, noreg /* ftos */, Address(r0, r1, Address::lsl(0)), noreg, noreg);
3571 break;
3572 default:
3573 ShouldNotReachHere();
3574 }
3575
3576 {
3577 Label notVolatile;
3578 __ load_unsigned_byte(r3, Address(r2, in_bytes(ResolvedFieldEntry::flags_offset())));
3579 __ tbz(r3, ResolvedFieldEntry::is_volatile_shift, notVolatile);
3580 __ membar(MacroAssembler::LoadLoad | MacroAssembler::LoadStore);
3581 __ bind(notVolatile);
3582 }
3583
3584 __ decrement(rbcp);
3585 }
3586
3587
3588
3589 //-----------------------------------------------------------------------------
3590 // Calls
3591
3592 void TemplateTable::prepare_invoke(Register cache, Register recv) {
3593
3594 Bytecodes::Code code = bytecode();
3595 const bool load_receiver = (code != Bytecodes::_invokestatic) && (code != Bytecodes::_invokedynamic);
3596
3597 // save 'interpreter return address'
3598 __ save_bcp();
3599
3600 // Load TOS state for later
3601 __ load_unsigned_byte(rscratch2, Address(cache, in_bytes(ResolvedMethodEntry::type_offset())));
3602
3603 // load receiver if needed (note: no return address pushed yet)
3604 if (load_receiver) {
3605 __ load_unsigned_short(recv, Address(cache, in_bytes(ResolvedMethodEntry::num_parameters_offset())));
3606 __ add(rscratch1, esp, recv, ext::uxtx, 3);
3607 __ ldr(recv, Address(rscratch1, -Interpreter::expr_offset_in_bytes(1)));
3608 __ verify_oop(recv);
3609 }
3610
3611 // load return address
3612 {
3613 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
3614 __ mov(rscratch1, table_addr);
3615 __ ldr(lr, Address(rscratch1, rscratch2, Address::lsl(3)));
3616 }
3617 }
3618
3619
3620 void TemplateTable::invokevirtual_helper(Register index,
3621 Register recv,
3622 Register flags)
3623 {
3624 // Uses temporary registers r0, r3
3625 assert_different_registers(index, recv, r0, r3);
3626 // Test for an invoke of a final method
3627 Label notFinal;
3628 __ tbz(flags, ResolvedMethodEntry::is_vfinal_shift, notFinal);
3629
3630 const Register method = index; // method must be rmethod
3631 assert(method == rmethod,
3632 "Method must be rmethod for interpreter calling convention");
3633
3634 // do the call - the index is actually the method to call
3635 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method*
3636
3637 // It's final, need a null check here!
3638 __ null_check(recv);
3639
3640 // profile this call
3641 __ profile_final_call(r0);
3642 __ profile_arguments_type(r0, method, r4, true);
3643
3644 __ jump_from_interpreted(method, r0);
3645
3646 __ bind(notFinal);
3647
3648 // get receiver klass
3649 __ load_klass(r0, recv);
3650
3651 // profile this call
3652 __ profile_virtual_call(r0, rlocals, r3);
3653
3654 // get target Method & entry point
3655 __ lookup_virtual_method(r0, index, method);
3656 __ profile_arguments_type(r3, method, r4, true);
3657 // FIXME -- this looks completely redundant. is it?
3658 // __ ldr(r3, Address(method, Method::interpreter_entry_offset()));
3659 __ jump_from_interpreted(method, r3);
3660 }
3661
3662 void TemplateTable::invokevirtual(int byte_no)
3663 {
3664 transition(vtos, vtos);
3665 assert(byte_no == f2_byte, "use this argument");
3666
3667 load_resolved_method_entry_virtual(r2, // ResolvedMethodEntry*
3668 rmethod, // Method* or itable index
3669 r3); // flags
3670 prepare_invoke(r2, r2); // recv
3671
3672 // rmethod: index (actually a Method*)
3673 // r2: receiver
3674 // r3: flags
3675
3676 invokevirtual_helper(rmethod, r2, r3);
3677 }
3678
3679 void TemplateTable::invokespecial(int byte_no)
3680 {
3681 transition(vtos, vtos);
3682 assert(byte_no == f1_byte, "use this argument");
3683
3684 load_resolved_method_entry_special_or_static(r2, // ResolvedMethodEntry*
3685 rmethod, // Method*
3686 r3); // flags
3687 prepare_invoke(r2, r2); // get receiver also for null check
3688 __ verify_oop(r2);
3689 __ null_check(r2);
3690 // do the call
3691 __ profile_call(r0);
3692 __ profile_arguments_type(r0, rmethod, rbcp, false);
3693 __ jump_from_interpreted(rmethod, r0);
3694 }
3695
3696 void TemplateTable::invokestatic(int byte_no)
3697 {
3698 transition(vtos, vtos);
3699 assert(byte_no == f1_byte, "use this argument");
3700
3701 load_resolved_method_entry_special_or_static(r2, // ResolvedMethodEntry*
3702 rmethod, // Method*
3703 r3); // flags
3704 prepare_invoke(r2, r2); // get receiver also for null check
3705
3706 // do the call
3707 __ profile_call(r0);
3708 __ profile_arguments_type(r0, rmethod, r4, false);
3709 __ jump_from_interpreted(rmethod, r0);
3710 }
3711
3712 void TemplateTable::fast_invokevfinal(int byte_no)
3713 {
3714 __ call_Unimplemented();
3715 }
3716
3717 void TemplateTable::invokeinterface(int byte_no) {
3718 transition(vtos, vtos);
3719 assert(byte_no == f1_byte, "use this argument");
3720
3721 load_resolved_method_entry_interface(r2, // ResolvedMethodEntry*
3722 r0, // Klass*
3723 rmethod, // Method* or itable/vtable index
3724 r3); // flags
3725 prepare_invoke(r2, r2); // receiver
3726
3727 // r0: interface klass (from f1)
3728 // rmethod: method (from f2)
3729 // r2: receiver
3730 // r3: flags
3731
3732 // First check for Object case, then private interface method,
3733 // then regular interface method.
3734
3735 // Special case of invokeinterface called for virtual method of
3736 // java.lang.Object. See cpCache.cpp for details.
3737 Label notObjectMethod;
3738 __ tbz(r3, ResolvedMethodEntry::is_forced_virtual_shift, notObjectMethod);
3739
3740 invokevirtual_helper(rmethod, r2, r3);
3741 __ bind(notObjectMethod);
3742
3743 Label no_such_interface;
3744
3745 // Check for private method invocation - indicated by vfinal
3746 Label notVFinal;
3747 __ tbz(r3, ResolvedMethodEntry::is_vfinal_shift, notVFinal);
3748
3749 // Get receiver klass into r3
3750 __ load_klass(r3, r2);
3751
3752 Label subtype;
3753 __ check_klass_subtype(r3, r0, r4, subtype);
3754 // If we get here the typecheck failed
3755 __ b(no_such_interface);
3756 __ bind(subtype);
3757
3758 __ profile_final_call(r0);
3759 __ profile_arguments_type(r0, rmethod, r4, true);
3760 __ jump_from_interpreted(rmethod, r0);
3761
3762 __ bind(notVFinal);
3763
3764 // Get receiver klass into r3
3765 __ restore_locals();
3766 __ load_klass(r3, r2);
3767
3768 Label no_such_method;
3769
3770 // Preserve method for throw_AbstractMethodErrorVerbose.
3771 __ mov(r16, rmethod);
3772 // Receiver subtype check against REFC.
3773 // Superklass in r0. Subklass in r3. Blows rscratch2, r13
3774 __ lookup_interface_method(// inputs: rec. class, interface, itable index
3775 r3, r0, noreg,
3776 // outputs: scan temp. reg, scan temp. reg
3777 rscratch2, r13,
3778 no_such_interface,
3779 /*return_method=*/false);
3780
3781 // profile this call
3782 __ profile_virtual_call(r3, r13, r19);
3783
3784 // Get declaring interface class from method, and itable index
3785
3786 __ load_method_holder(r0, rmethod);
3787 __ ldrw(rmethod, Address(rmethod, Method::itable_index_offset()));
3788 __ subw(rmethod, rmethod, Method::itable_index_max);
3789 __ negw(rmethod, rmethod);
3790
3791 // Preserve recvKlass for throw_AbstractMethodErrorVerbose.
3792 __ mov(rlocals, r3);
3793 __ lookup_interface_method(// inputs: rec. class, interface, itable index
3794 rlocals, r0, rmethod,
3795 // outputs: method, scan temp. reg
3796 rmethod, r13,
3797 no_such_interface);
3798
3799 // rmethod,: Method to call
3800 // r2: receiver
3801 // Check for abstract method error
3802 // Note: This should be done more efficiently via a throw_abstract_method_error
3803 // interpreter entry point and a conditional jump to it in case of a null
3804 // method.
3805 __ cbz(rmethod, no_such_method);
3806
3807 __ profile_arguments_type(r3, rmethod, r13, true);
3808
3809 // do the call
3810 // r2: receiver
3811 // rmethod,: Method
3812 __ jump_from_interpreted(rmethod, r3);
3813 __ should_not_reach_here();
3814
3815 // exception handling code follows...
3816 // note: must restore interpreter registers to canonical
3817 // state for exception handling to work correctly!
3818
3819 __ bind(no_such_method);
3820 // throw exception
3821 __ restore_bcp(); // bcp must be correct for exception handler (was destroyed)
3822 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
3823 // Pass arguments for generating a verbose error message.
3824 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodErrorVerbose), r3, r16);
3825 // the call_VM checks for exception, so we should never return here.
3826 __ should_not_reach_here();
3827
3828 __ bind(no_such_interface);
3829 // throw exception
3830 __ restore_bcp(); // bcp must be correct for exception handler (was destroyed)
3831 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
3832 // Pass arguments for generating a verbose error message.
3833 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
3834 InterpreterRuntime::throw_IncompatibleClassChangeErrorVerbose), r3, r0);
3835 // the call_VM checks for exception, so we should never return here.
3836 __ should_not_reach_here();
3837 return;
3838 }
3839
3840 void TemplateTable::invokehandle(int byte_no) {
3841 transition(vtos, vtos);
3842 assert(byte_no == f1_byte, "use this argument");
3843
3844 load_resolved_method_entry_handle(r2, // ResolvedMethodEntry*
3845 rmethod, // Method*
3846 r0, // Resolved reference
3847 r3); // flags
3848 prepare_invoke(r2, r2);
3849
3850 __ verify_method_ptr(r2);
3851 __ verify_oop(r2);
3852 __ null_check(r2);
3853
3854 // FIXME: profile the LambdaForm also
3855
3856 // r13 is safe to use here as a scratch reg because it is about to
3857 // be clobbered by jump_from_interpreted().
3858 __ profile_final_call(r13);
3859 __ profile_arguments_type(r13, rmethod, r4, true);
3860
3861 __ jump_from_interpreted(rmethod, r0);
3862 }
3863
3864 void TemplateTable::invokedynamic(int byte_no) {
3865 transition(vtos, vtos);
3866 assert(byte_no == f1_byte, "use this argument");
3867
3868 load_invokedynamic_entry(rmethod);
3869
3870 // r0: CallSite object (from cpool->resolved_references[])
3871 // rmethod: MH.linkToCallSite method
3872
3873 // Note: r0_callsite is already pushed
3874
3875 // %%% should make a type profile for any invokedynamic that takes a ref argument
3876 // profile this call
3877 __ profile_call(rbcp);
3878 __ profile_arguments_type(r3, rmethod, r13, false);
3879
3880 __ verify_oop(r0);
3881
3882 __ jump_from_interpreted(rmethod, r0);
3883 }
3884
3885
3886 //-----------------------------------------------------------------------------
3887 // Allocation
3888
3889 void TemplateTable::_new() {
3890 transition(vtos, atos);
3891
3892 __ get_unsigned_2_byte_index_at_bcp(r3, 1);
3893 Label slow_case;
3894 Label done;
3895 Label initialize_header;
3896
3897 __ get_cpool_and_tags(r4, r0);
3898 // Make sure the class we're about to instantiate has been resolved.
3899 // This is done before loading InstanceKlass to be consistent with the order
3900 // how Constant Pool is updated (see ConstantPool::klass_at_put)
3901 const int tags_offset = Array<u1>::base_offset_in_bytes();
3902 __ lea(rscratch1, Address(r0, r3, Address::lsl(0)));
3903 __ lea(rscratch1, Address(rscratch1, tags_offset));
3904 __ ldarb(rscratch1, rscratch1);
3905 __ cmp(rscratch1, (u1)JVM_CONSTANT_Class);
3906 __ br(Assembler::NE, slow_case);
3907
3908 // get InstanceKlass
3909 __ load_resolved_klass_at_offset(r4, r3, r4, rscratch1);
3910
3911 // make sure klass is initialized
3912 assert(VM_Version::supports_fast_class_init_checks(), "Optimization requires support for fast class initialization checks");
3913 __ clinit_barrier(r4, rscratch1, nullptr /*L_fast_path*/, &slow_case);
3914
3915 __ allocate_instance(r4, r0, r3, r1, true, slow_case);
3916 if (DTraceAllocProbes) {
3917 // Trigger dtrace event for fastpath
3918 __ push(atos); // save the return value
3919 __ call_VM_leaf(
3920 CAST_FROM_FN_PTR(address, static_cast<int (*)(oopDesc*)>(SharedRuntime::dtrace_object_alloc)), r0);
3921 __ pop(atos); // restore the return value
3922
3923 }
3924 __ b(done);
3925
3926 // slow case
3927 __ bind(slow_case);
3928 __ get_constant_pool(c_rarg1);
3929 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1);
3930 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2);
3931 __ verify_oop(r0);
3932
3933 // continue
3934 __ bind(done);
3935 // Must prevent reordering of stores for object initialization with stores that publish the new object.
3936 __ membar(Assembler::StoreStore);
3937 }
3938
3939 void TemplateTable::newarray() {
3940 transition(itos, atos);
3941 __ load_unsigned_byte(c_rarg1, at_bcp(1));
3942 __ mov(c_rarg2, r0);
3943 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray),
3944 c_rarg1, c_rarg2);
3945 // Must prevent reordering of stores for object initialization with stores that publish the new object.
3946 __ membar(Assembler::StoreStore);
3947 }
3948
3949 void TemplateTable::anewarray() {
3950 transition(itos, atos);
3951 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1);
3952 __ get_constant_pool(c_rarg1);
3953 __ mov(c_rarg3, r0);
3954 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray),
3955 c_rarg1, c_rarg2, c_rarg3);
3956 // Must prevent reordering of stores for object initialization with stores that publish the new object.
3957 __ membar(Assembler::StoreStore);
3958 }
3959
3960 void TemplateTable::arraylength() {
3961 transition(atos, itos);
3962 __ ldrw(r0, Address(r0, arrayOopDesc::length_offset_in_bytes()));
3963 }
3964
3965 void TemplateTable::checkcast()
3966 {
3967 transition(atos, atos);
3968 Label done, is_null, ok_is_subtype, quicked, resolved;
3969 __ cbz(r0, is_null);
3970
3971 // Get cpool & tags index
3972 __ get_cpool_and_tags(r2, r3); // r2=cpool, r3=tags array
3973 __ get_unsigned_2_byte_index_at_bcp(r19, 1); // r19=index
3974 // See if bytecode has already been quicked
3975 __ add(rscratch1, r3, Array<u1>::base_offset_in_bytes());
3976 __ lea(r1, Address(rscratch1, r19));
3977 __ ldarb(r1, r1);
3978 __ cmp(r1, (u1)JVM_CONSTANT_Class);
3979 __ br(Assembler::EQ, quicked);
3980
3981 __ push(atos); // save receiver for result, and for GC
3982 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
3983 // vm_result_2 has metadata result
3984 __ get_vm_result_2(r0, rthread);
3985 __ pop(r3); // restore receiver
3986 __ b(resolved);
3987
3988 // Get superklass in r0 and subklass in r3
3989 __ bind(quicked);
3990 __ mov(r3, r0); // Save object in r3; r0 needed for subtype check
3991 __ load_resolved_klass_at_offset(r2, r19, r0, rscratch1); // r0 = klass
3992
3993 __ bind(resolved);
3994 __ load_klass(r19, r3);
3995
3996 // Generate subtype check. Blows r2, r5. Object in r3.
3997 // Superklass in r0. Subklass in r19.
3998 __ gen_subtype_check(r19, ok_is_subtype);
3999
4000 // Come here on failure
4001 __ push(r3);
4002 // object is at TOS
4003 __ b(Interpreter::_throw_ClassCastException_entry);
4004
4005 // Come here on success
4006 __ bind(ok_is_subtype);
4007 __ mov(r0, r3); // Restore object in r3
4008
4009 __ b(done);
4010 __ bind(is_null);
4011
4012 // Collect counts on whether this test sees nulls a lot or not.
4013 if (ProfileInterpreter) {
4014 __ profile_null_seen(r2);
4015 }
4016
4017 __ bind(done);
4018 }
4019
4020 void TemplateTable::instanceof() {
4021 transition(atos, itos);
4022 Label done, is_null, ok_is_subtype, quicked, resolved;
4023 __ cbz(r0, is_null);
4024
4025 // Get cpool & tags index
4026 __ get_cpool_and_tags(r2, r3); // r2=cpool, r3=tags array
4027 __ get_unsigned_2_byte_index_at_bcp(r19, 1); // r19=index
4028 // See if bytecode has already been quicked
4029 __ add(rscratch1, r3, Array<u1>::base_offset_in_bytes());
4030 __ lea(r1, Address(rscratch1, r19));
4031 __ ldarb(r1, r1);
4032 __ cmp(r1, (u1)JVM_CONSTANT_Class);
4033 __ br(Assembler::EQ, quicked);
4034
4035 __ push(atos); // save receiver for result, and for GC
4036 call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
4037 // vm_result_2 has metadata result
4038 __ get_vm_result_2(r0, rthread);
4039 __ pop(r3); // restore receiver
4040 __ verify_oop(r3);
4041 __ load_klass(r3, r3);
4042 __ b(resolved);
4043
4044 // Get superklass in r0 and subklass in r3
4045 __ bind(quicked);
4046 __ load_klass(r3, r0);
4047 __ load_resolved_klass_at_offset(r2, r19, r0, rscratch1);
4048
4049 __ bind(resolved);
4050
4051 // Generate subtype check. Blows r2, r5
4052 // Superklass in r0. Subklass in r3.
4053 __ gen_subtype_check(r3, ok_is_subtype);
4054
4055 // Come here on failure
4056 __ mov(r0, 0);
4057 __ b(done);
4058 // Come here on success
4059 __ bind(ok_is_subtype);
4060 __ mov(r0, 1);
4061
4062 // Collect counts on whether this test sees nulls a lot or not.
4063 if (ProfileInterpreter) {
4064 __ b(done);
4065 __ bind(is_null);
4066 __ profile_null_seen(r2);
4067 } else {
4068 __ bind(is_null); // same as 'done'
4069 }
4070 __ bind(done);
4071 // r0 = 0: obj == nullptr or obj is not an instanceof the specified klass
4072 // r0 = 1: obj != nullptr and obj is an instanceof the specified klass
4073 }
4074
4075 //-----------------------------------------------------------------------------
4076 // Breakpoints
4077 void TemplateTable::_breakpoint() {
4078 // Note: We get here even if we are single stepping..
4079 // jbug inists on setting breakpoints at every bytecode
4080 // even if we are in single step mode.
4081
4082 transition(vtos, vtos);
4083
4084 // get the unpatched byte code
4085 __ get_method(c_rarg1);
4086 __ call_VM(noreg,
4087 CAST_FROM_FN_PTR(address,
4088 InterpreterRuntime::get_original_bytecode_at),
4089 c_rarg1, rbcp);
4090 __ mov(r19, r0);
4091
4092 // post the breakpoint event
4093 __ call_VM(noreg,
4094 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint),
4095 rmethod, rbcp);
4096
4097 // complete the execution of original bytecode
4098 __ mov(rscratch1, r19);
4099 __ dispatch_only_normal(vtos);
4100 }
4101
4102 //-----------------------------------------------------------------------------
4103 // Exceptions
4104
4105 void TemplateTable::athrow() {
4106 transition(atos, vtos);
4107 __ null_check(r0);
4108 __ b(Interpreter::throw_exception_entry());
4109 }
4110
4111 //-----------------------------------------------------------------------------
4112 // Synchronization
4113 //
4114 // Note: monitorenter & exit are symmetric routines; which is reflected
4115 // in the assembly code structure as well
4116 //
4117 // Stack layout:
4118 //
4119 // [expressions ] <--- esp = expression stack top
4120 // ..
4121 // [expressions ]
4122 // [monitor entry] <--- monitor block top = expression stack bot
4123 // ..
4124 // [monitor entry]
4125 // [frame data ] <--- monitor block bot
4126 // ...
4127 // [saved rfp ] <--- rfp
4128 void TemplateTable::monitorenter()
4129 {
4130 transition(atos, vtos);
4131
4132 // check for null object
4133 __ null_check(r0);
4134
4135 Label is_inline_type;
4136 __ ldr(rscratch1, Address(r0, oopDesc::mark_offset_in_bytes()));
4137 __ test_markword_is_inline_type(rscratch1, is_inline_type);
4138
4139 const Address monitor_block_top(
4140 rfp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
4141 const Address monitor_block_bot(
4142 rfp, frame::interpreter_frame_initial_sp_offset * wordSize);
4143 const int entry_size = frame::interpreter_frame_monitor_size_in_bytes();
4144
4145 Label allocated;
4146
4147 // initialize entry pointer
4148 __ mov(c_rarg1, zr); // points to free slot or null
4149
4150 // find a free slot in the monitor block (result in c_rarg1)
4151 {
4152 Label entry, loop, exit;
4153 __ ldr(c_rarg3, monitor_block_top); // derelativize pointer
4154 __ lea(c_rarg3, Address(rfp, c_rarg3, Address::lsl(Interpreter::logStackElementSize)));
4155 // c_rarg3 points to current entry, starting with top-most entry
4156
4157 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom
4158
4159 __ b(entry);
4160
4161 __ bind(loop);
4162 // check if current entry is used
4163 // if not used then remember entry in c_rarg1
4164 __ ldr(rscratch1, Address(c_rarg3, BasicObjectLock::obj_offset()));
4165 __ cmp(zr, rscratch1);
4166 __ csel(c_rarg1, c_rarg3, c_rarg1, Assembler::EQ);
4167 // check if current entry is for same object
4168 __ cmp(r0, rscratch1);
4169 // if same object then stop searching
4170 __ br(Assembler::EQ, exit);
4171 // otherwise advance to next entry
4172 __ add(c_rarg3, c_rarg3, entry_size);
4173 __ bind(entry);
4174 // check if bottom reached
4175 __ cmp(c_rarg3, c_rarg2);
4176 // if not at bottom then check this entry
4177 __ br(Assembler::NE, loop);
4178 __ bind(exit);
4179 }
4180
4181 __ cbnz(c_rarg1, allocated); // check if a slot has been found and
4182 // if found, continue with that on
4183
4184 // allocate one if there's no free slot
4185 {
4186 Label entry, loop;
4187 // 1. compute new pointers // rsp: old expression stack top
4188
4189 __ check_extended_sp();
4190 __ sub(sp, sp, entry_size); // make room for the monitor
4191 __ sub(rscratch1, sp, rfp);
4192 __ asr(rscratch1, rscratch1, Interpreter::logStackElementSize);
4193 __ str(rscratch1, Address(rfp, frame::interpreter_frame_extended_sp_offset * wordSize));
4194
4195 __ ldr(c_rarg1, monitor_block_bot); // derelativize pointer
4196 __ lea(c_rarg1, Address(rfp, c_rarg1, Address::lsl(Interpreter::logStackElementSize)));
4197 // c_rarg1 points to the old expression stack bottom
4198
4199 __ sub(esp, esp, entry_size); // move expression stack top
4200 __ sub(c_rarg1, c_rarg1, entry_size); // move expression stack bottom
4201 __ mov(c_rarg3, esp); // set start value for copy loop
4202 __ sub(rscratch1, c_rarg1, rfp); // relativize pointer
4203 __ asr(rscratch1, rscratch1, Interpreter::logStackElementSize);
4204 __ str(rscratch1, monitor_block_bot); // set new monitor block bottom
4205
4206 __ b(entry);
4207 // 2. move expression stack contents
4208 __ bind(loop);
4209 __ ldr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack
4210 // word from old location
4211 __ str(c_rarg2, Address(c_rarg3, 0)); // and store it at new location
4212 __ add(c_rarg3, c_rarg3, wordSize); // advance to next word
4213 __ bind(entry);
4214 __ cmp(c_rarg3, c_rarg1); // check if bottom reached
4215 __ br(Assembler::NE, loop); // if not at bottom then
4216 // copy next word
4217 }
4218
4219 // call run-time routine
4220 // c_rarg1: points to monitor entry
4221 __ bind(allocated);
4222
4223 // Increment bcp to point to the next bytecode, so exception
4224 // handling for async. exceptions work correctly.
4225 // The object has already been popped from the stack, so the
4226 // expression stack looks correct.
4227 __ increment(rbcp);
4228
4229 // store object
4230 __ str(r0, Address(c_rarg1, BasicObjectLock::obj_offset()));
4231 __ lock_object(c_rarg1);
4232
4233 // check to make sure this monitor doesn't cause stack overflow after locking
4234 __ save_bcp(); // in case of exception
4235 __ generate_stack_overflow_check(0);
4236
4237 // The bcp has already been incremented. Just need to dispatch to
4238 // next instruction.
4239 __ dispatch_next(vtos);
4240
4241 __ bind(is_inline_type);
4242 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
4243 InterpreterRuntime::throw_identity_exception), r0);
4244 __ should_not_reach_here();
4245 }
4246
4247
4248 void TemplateTable::monitorexit()
4249 {
4250 transition(atos, vtos);
4251
4252 // check for null object
4253 __ null_check(r0);
4254
4255 const int is_inline_type_mask = markWord::inline_type_pattern;
4256 Label has_identity;
4257 __ ldr(rscratch1, Address(r0, oopDesc::mark_offset_in_bytes()));
4258 __ mov(rscratch2, is_inline_type_mask);
4259 __ andr(rscratch1, rscratch1, rscratch2);
4260 __ cmp(rscratch1, rscratch2);
4261 __ br(Assembler::NE, has_identity);
4262 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
4263 InterpreterRuntime::throw_illegal_monitor_state_exception));
4264 __ should_not_reach_here();
4265 __ bind(has_identity);
4266
4267 const Address monitor_block_top(
4268 rfp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
4269 const Address monitor_block_bot(
4270 rfp, frame::interpreter_frame_initial_sp_offset * wordSize);
4271 const int entry_size = frame::interpreter_frame_monitor_size_in_bytes();
4272
4273 Label found;
4274
4275 // find matching slot
4276 {
4277 Label entry, loop;
4278 __ ldr(c_rarg1, monitor_block_top); // derelativize pointer
4279 __ lea(c_rarg1, Address(rfp, c_rarg1, Address::lsl(Interpreter::logStackElementSize)));
4280 // c_rarg1 points to current entry, starting with top-most entry
4281
4282 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom
4283 // of monitor block
4284 __ b(entry);
4285
4286 __ bind(loop);
4287 // check if current entry is for same object
4288 __ ldr(rscratch1, Address(c_rarg1, BasicObjectLock::obj_offset()));
4289 __ cmp(r0, rscratch1);
4290 // if same object then stop searching
4291 __ br(Assembler::EQ, found);
4292 // otherwise advance to next entry
4293 __ add(c_rarg1, c_rarg1, entry_size);
4294 __ bind(entry);
4295 // check if bottom reached
4296 __ cmp(c_rarg1, c_rarg2);
4297 // if not at bottom then check this entry
4298 __ br(Assembler::NE, loop);
4299 }
4300
4301 // error handling. Unlocking was not block-structured
4302 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
4303 InterpreterRuntime::throw_illegal_monitor_state_exception));
4304 __ should_not_reach_here();
4305
4306 // call run-time routine
4307 __ bind(found);
4308 __ push_ptr(r0); // make sure object is on stack (contract with oopMaps)
4309 __ unlock_object(c_rarg1);
4310 __ pop_ptr(r0); // discard object
4311 }
4312
4313
4314 // Wide instructions
4315 void TemplateTable::wide()
4316 {
4317 __ load_unsigned_byte(r19, at_bcp(1));
4318 __ mov(rscratch1, (address)Interpreter::_wentry_point);
4319 __ ldr(rscratch1, Address(rscratch1, r19, Address::uxtw(3)));
4320 __ br(rscratch1);
4321 }
4322
4323
4324 // Multi arrays
4325 void TemplateTable::multianewarray() {
4326 transition(vtos, atos);
4327 __ load_unsigned_byte(r0, at_bcp(3)); // get number of dimensions
4328 // last dim is on top of stack; we want address of first one:
4329 // first_addr = last_addr + (ndims - 1) * wordSize
4330 __ lea(c_rarg1, Address(esp, r0, Address::uxtw(3)));
4331 __ sub(c_rarg1, c_rarg1, wordSize);
4332 call_VM(r0,
4333 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray),
4334 c_rarg1);
4335 __ load_unsigned_byte(r1, at_bcp(3));
4336 __ lea(esp, Address(esp, r1, Address::uxtw(3)));
4337 }