1 /*
2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.hpp"
27 #include "compiler/disassembler.hpp"
28 #include "gc/shared/collectedHeap.hpp"
29 #include "gc/shared/gc_globals.hpp"
30 #include "gc/shared/tlab_globals.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "interpreter/interpreterRuntime.hpp"
33 #include "interpreter/interp_masm.hpp"
34 #include "interpreter/templateTable.hpp"
35 #include "memory/universe.hpp"
36 #include "oops/methodCounters.hpp"
37 #include "oops/methodData.hpp"
38 #include "oops/objArrayKlass.hpp"
39 #include "oops/oop.inline.hpp"
40 #include "oops/inlineKlass.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/safepointMechanism.hpp"
48 #include "runtime/sharedRuntime.hpp"
49 #include "runtime/stubRoutines.hpp"
50 #include "runtime/synchronizer.hpp"
51 #include "utilities/macros.hpp"
52
53 #define __ Disassembler::hook<InterpreterMacroAssembler>(__FILE__, __LINE__, _masm)->
54
55 // Global Register Names
56 static const Register rbcp = LP64_ONLY(r13) NOT_LP64(rsi);
57 static const Register rlocals = LP64_ONLY(r14) NOT_LP64(rdi);
58
59 // Address Computation: local variables
60 static inline Address iaddress(int n) {
61 return Address(rlocals, Interpreter::local_offset_in_bytes(n));
62 }
63
64 static inline Address laddress(int n) {
65 return iaddress(n + 1);
66 }
67
68 #ifndef _LP64
69 static inline Address haddress(int n) {
70 return iaddress(n + 0);
71 }
72 #endif
73
74 static inline Address faddress(int n) {
75 return iaddress(n);
76 }
77
78 static inline Address daddress(int n) {
79 return laddress(n);
80 }
81
82 static inline Address aaddress(int n) {
83 return iaddress(n);
84 }
85
86 static inline Address iaddress(Register r) {
87 return Address(rlocals, r, Address::times_ptr);
88 }
89
90 static inline Address laddress(Register r) {
91 return Address(rlocals, r, Address::times_ptr, Interpreter::local_offset_in_bytes(1));
92 }
93
94 #ifndef _LP64
95 static inline Address haddress(Register r) {
96 return Address(rlocals, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0));
97 }
98 #endif
99
100 static inline Address faddress(Register r) {
101 return iaddress(r);
102 }
103
104 static inline Address daddress(Register r) {
105 return laddress(r);
106 }
107
108 static inline Address aaddress(Register r) {
109 return iaddress(r);
110 }
111
112
113 // expression stack
114 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store
115 // data beyond the rsp which is potentially unsafe in an MT environment;
116 // an interrupt may overwrite that data.)
117 static inline Address at_rsp () {
118 return Address(rsp, 0);
119 }
120
121 // At top of Java expression stack which may be different than esp(). It
122 // isn't for category 1 objects.
123 static inline Address at_tos () {
124 return Address(rsp, Interpreter::expr_offset_in_bytes(0));
125 }
126
127 static inline Address at_tos_p1() {
128 return Address(rsp, Interpreter::expr_offset_in_bytes(1));
129 }
130
131 static inline Address at_tos_p2() {
132 return Address(rsp, Interpreter::expr_offset_in_bytes(2));
133 }
134
135 // Condition conversion
136 static Assembler::Condition j_not(TemplateTable::Condition cc) {
137 switch (cc) {
138 case TemplateTable::equal : return Assembler::notEqual;
139 case TemplateTable::not_equal : return Assembler::equal;
140 case TemplateTable::less : return Assembler::greaterEqual;
141 case TemplateTable::less_equal : return Assembler::greater;
142 case TemplateTable::greater : return Assembler::lessEqual;
143 case TemplateTable::greater_equal: return Assembler::less;
144 }
145 ShouldNotReachHere();
146 return Assembler::zero;
147 }
148
149
150
151 // Miscellaneous helper routines
152 // Store an oop (or null) at the address described by obj.
153 // If val == noreg this means store a null
154
155
156 static void do_oop_store(InterpreterMacroAssembler* _masm,
157 Address dst,
158 Register val,
159 DecoratorSet decorators = 0) {
160 assert(val == noreg || val == rax, "parameter is just for looks");
161 __ store_heap_oop(dst, val,
162 NOT_LP64(rdx) LP64_ONLY(rscratch2),
163 NOT_LP64(rbx) LP64_ONLY(r9),
164 NOT_LP64(rsi) LP64_ONLY(r8), decorators);
165 }
166
167 static void do_oop_load(InterpreterMacroAssembler* _masm,
168 Address src,
169 Register dst,
170 DecoratorSet decorators = 0) {
171 __ load_heap_oop(dst, src, rdx, rbx, decorators);
172 }
173
174 Address TemplateTable::at_bcp(int offset) {
175 assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
176 return Address(rbcp, offset);
177 }
178
179
180 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
181 Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
182 int byte_no) {
183 if (!RewriteBytecodes) return;
184 Label L_patch_done;
185
186 switch (bc) {
187 case Bytecodes::_fast_vputfield:
188 case Bytecodes::_fast_aputfield:
189 case Bytecodes::_fast_bputfield:
190 case Bytecodes::_fast_zputfield:
191 case Bytecodes::_fast_cputfield:
192 case Bytecodes::_fast_dputfield:
193 case Bytecodes::_fast_fputfield:
194 case Bytecodes::_fast_iputfield:
195 case Bytecodes::_fast_lputfield:
196 case Bytecodes::_fast_sputfield:
197 {
198 // We skip bytecode quickening for putfield instructions when
199 // the put_code written to the constant pool cache is zero.
200 // This is required so that every execution of this instruction
201 // calls out to InterpreterRuntime::resolve_get_put to do
202 // additional, required work.
203 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
204 assert(load_bc_into_bc_reg, "we use bc_reg as temp");
205 __ load_field_entry(temp_reg, bc_reg);
206 if (byte_no == f1_byte) {
207 __ load_unsigned_byte(temp_reg, Address(temp_reg, in_bytes(ResolvedFieldEntry::get_code_offset())));
208 } else {
209 __ load_unsigned_byte(temp_reg, Address(temp_reg, in_bytes(ResolvedFieldEntry::put_code_offset())));
210 }
211
212 __ movl(bc_reg, bc);
213 __ cmpl(temp_reg, (int) 0);
214 __ jcc(Assembler::zero, L_patch_done); // don't patch
215 }
216 break;
217 default:
218 assert(byte_no == -1, "sanity");
219 // the pair bytecodes have already done the load.
220 if (load_bc_into_bc_reg) {
221 __ movl(bc_reg, bc);
222 }
223 }
224
225 if (JvmtiExport::can_post_breakpoint()) {
226 Label L_fast_patch;
227 // if a breakpoint is present we can't rewrite the stream directly
228 __ movzbl(temp_reg, at_bcp(0));
229 __ cmpl(temp_reg, Bytecodes::_breakpoint);
230 __ jcc(Assembler::notEqual, L_fast_patch);
231 __ get_method(temp_reg);
232 // Let breakpoint table handling rewrite to quicker bytecode
233 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rbcp, bc_reg);
234 #ifndef ASSERT
235 __ jmpb(L_patch_done);
236 #else
237 __ jmp(L_patch_done);
238 #endif
239 __ bind(L_fast_patch);
240 }
241
242 #ifdef ASSERT
243 Label L_okay;
244 __ load_unsigned_byte(temp_reg, at_bcp(0));
245 __ cmpl(temp_reg, (int) Bytecodes::java_code(bc));
246 __ jcc(Assembler::equal, L_okay);
247 __ cmpl(temp_reg, bc_reg);
248 __ jcc(Assembler::equal, L_okay);
249 __ stop("patching the wrong bytecode");
250 __ bind(L_okay);
251 #endif
252
253 // patch bytecode
254 __ movb(at_bcp(0), bc_reg);
255 __ bind(L_patch_done);
256 }
257 // Individual instructions
258
259
260 void TemplateTable::nop() {
261 transition(vtos, vtos);
262 // nothing to do
263 }
264
265 void TemplateTable::shouldnotreachhere() {
266 transition(vtos, vtos);
267 __ stop("shouldnotreachhere bytecode");
268 }
269
270 void TemplateTable::aconst_null() {
271 transition(vtos, atos);
272 __ xorl(rax, rax);
273 }
274
275 void TemplateTable::iconst(int value) {
276 transition(vtos, itos);
277 if (value == 0) {
278 __ xorl(rax, rax);
279 } else {
280 __ movl(rax, value);
281 }
282 }
283
284 void TemplateTable::lconst(int value) {
285 transition(vtos, ltos);
286 if (value == 0) {
287 __ xorl(rax, rax);
288 } else {
289 __ movl(rax, value);
290 }
291 #ifndef _LP64
292 assert(value >= 0, "check this code");
293 __ xorptr(rdx, rdx);
294 #endif
295 }
296
297
298
299 void TemplateTable::fconst(int value) {
300 transition(vtos, ftos);
301 if (UseSSE >= 1) {
302 static float one = 1.0f, two = 2.0f;
303 switch (value) {
304 case 0:
305 __ xorps(xmm0, xmm0);
306 break;
307 case 1:
308 __ movflt(xmm0, ExternalAddress((address) &one), rscratch1);
309 break;
310 case 2:
311 __ movflt(xmm0, ExternalAddress((address) &two), rscratch1);
312 break;
313 default:
314 ShouldNotReachHere();
315 break;
316 }
317 } else {
318 #ifdef _LP64
319 ShouldNotReachHere();
320 #else
321 if (value == 0) { __ fldz();
322 } else if (value == 1) { __ fld1();
323 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here
324 } else { ShouldNotReachHere();
325 }
326 #endif // _LP64
327 }
328 }
329
330 void TemplateTable::dconst(int value) {
331 transition(vtos, dtos);
332 if (UseSSE >= 2) {
333 static double one = 1.0;
334 switch (value) {
335 case 0:
336 __ xorpd(xmm0, xmm0);
337 break;
338 case 1:
339 __ movdbl(xmm0, ExternalAddress((address) &one), rscratch1);
340 break;
341 default:
342 ShouldNotReachHere();
343 break;
344 }
345 } else {
346 #ifdef _LP64
347 ShouldNotReachHere();
348 #else
349 if (value == 0) { __ fldz();
350 } else if (value == 1) { __ fld1();
351 } else { ShouldNotReachHere();
352 }
353 #endif
354 }
355 }
356
357 void TemplateTable::bipush() {
358 transition(vtos, itos);
359 __ load_signed_byte(rax, at_bcp(1));
360 }
361
362 void TemplateTable::sipush() {
363 transition(vtos, itos);
364 __ load_unsigned_short(rax, at_bcp(1));
365 __ bswapl(rax);
366 __ sarl(rax, 16);
367 }
368
369 void TemplateTable::ldc(LdcType type) {
370 transition(vtos, vtos);
371 Register rarg = NOT_LP64(rcx) LP64_ONLY(c_rarg1);
372 Label call_ldc, notFloat, notClass, notInt, Done;
373
374 if (is_ldc_wide(type)) {
375 __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
376 } else {
377 __ load_unsigned_byte(rbx, at_bcp(1));
378 }
379
380 __ get_cpool_and_tags(rcx, rax);
381 const int base_offset = ConstantPool::header_size() * wordSize;
382 const int tags_offset = Array<u1>::base_offset_in_bytes();
383
384 // get type
385 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset));
386
387 // unresolved class - get the resolved class
388 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass);
389 __ jccb(Assembler::equal, call_ldc);
390
391 // unresolved class in error state - call into runtime to throw the error
392 // from the first resolution attempt
393 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError);
394 __ jccb(Assembler::equal, call_ldc);
395
396 // resolved class - need to call vm to get java mirror of the class
397 __ cmpl(rdx, JVM_CONSTANT_Class);
398 __ jcc(Assembler::notEqual, notClass);
399
400 __ bind(call_ldc);
401
402 __ movl(rarg, is_ldc_wide(type) ? 1 : 0);
403 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rarg);
404
405 __ push(atos);
406 __ jmp(Done);
407
408 __ bind(notClass);
409 __ cmpl(rdx, JVM_CONSTANT_Float);
410 __ jccb(Assembler::notEqual, notFloat);
411
412 // ftos
413 __ load_float(Address(rcx, rbx, Address::times_ptr, base_offset));
414 __ push(ftos);
415 __ jmp(Done);
416
417 __ bind(notFloat);
418 __ cmpl(rdx, JVM_CONSTANT_Integer);
419 __ jccb(Assembler::notEqual, notInt);
420
421 // itos
422 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset));
423 __ push(itos);
424 __ jmp(Done);
425
426 // assume the tag is for condy; if not, the VM runtime will tell us
427 __ bind(notInt);
428 condy_helper(Done);
429
430 __ bind(Done);
431 }
432
433 // Fast path for caching oop constants.
434 void TemplateTable::fast_aldc(LdcType type) {
435 transition(vtos, atos);
436
437 Register result = rax;
438 Register tmp = rdx;
439 Register rarg = NOT_LP64(rcx) LP64_ONLY(c_rarg1);
440 int index_size = is_ldc_wide(type) ? sizeof(u2) : sizeof(u1);
441
442 Label resolved;
443
444 // We are resolved if the resolved reference cache entry contains a
445 // non-null object (String, MethodType, etc.)
446 assert_different_registers(result, tmp);
447 __ get_cache_index_at_bcp(tmp, 1, index_size);
448 __ load_resolved_reference_at_index(result, tmp);
449 __ testptr(result, result);
450 __ jcc(Assembler::notZero, resolved);
451
452 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
453
454 // first time invocation - must resolve first
455 __ movl(rarg, (int)bytecode());
456 __ call_VM(result, entry, rarg);
457 __ bind(resolved);
458
459 { // Check for the null sentinel.
460 // If we just called the VM, it already did the mapping for us,
461 // but it's harmless to retry.
462 Label notNull;
463 ExternalAddress null_sentinel((address)Universe::the_null_sentinel_addr());
464 __ movptr(tmp, null_sentinel);
465 __ resolve_oop_handle(tmp, rscratch2);
466 __ cmpoop(tmp, result);
467 __ jccb(Assembler::notEqual, notNull);
468 __ xorptr(result, result); // null object reference
469 __ bind(notNull);
470 }
471
472 if (VerifyOops) {
473 __ verify_oop(result);
474 }
475 }
476
477 void TemplateTable::ldc2_w() {
478 transition(vtos, vtos);
479 Label notDouble, notLong, Done;
480 __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
481
482 __ get_cpool_and_tags(rcx, rax);
483 const int base_offset = ConstantPool::header_size() * wordSize;
484 const int tags_offset = Array<u1>::base_offset_in_bytes();
485
486 // get type
487 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset));
488 __ cmpl(rdx, JVM_CONSTANT_Double);
489 __ jccb(Assembler::notEqual, notDouble);
490
491 // dtos
492 __ load_double(Address(rcx, rbx, Address::times_ptr, base_offset));
493 __ push(dtos);
494
495 __ jmp(Done);
496 __ bind(notDouble);
497 __ cmpl(rdx, JVM_CONSTANT_Long);
498 __ jccb(Assembler::notEqual, notLong);
499
500 // ltos
501 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize));
502 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize)));
503 __ push(ltos);
504 __ jmp(Done);
505
506 __ bind(notLong);
507 condy_helper(Done);
508
509 __ bind(Done);
510 }
511
512 void TemplateTable::condy_helper(Label& Done) {
513 const Register obj = rax;
514 const Register off = rbx;
515 const Register flags = rcx;
516 const Register rarg = NOT_LP64(rcx) LP64_ONLY(c_rarg1);
517 __ movl(rarg, (int)bytecode());
518 call_VM(obj, CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc), rarg);
519 #ifndef _LP64
520 // borrow rdi from locals
521 __ get_thread(rdi);
522 __ get_vm_result_2(flags, rdi);
523 __ restore_locals();
524 #else
525 __ get_vm_result_2(flags, r15_thread);
526 #endif
527 // VMr = obj = base address to find primitive value to push
528 // VMr2 = flags = (tos, off) using format of CPCE::_flags
529 __ movl(off, flags);
530 __ andl(off, ConstantPoolCache::field_index_mask);
531 const Address field(obj, off, Address::times_1, 0*wordSize);
532
533 // What sort of thing are we loading?
534 __ shrl(flags, ConstantPoolCache::tos_state_shift);
535 __ andl(flags, ConstantPoolCache::tos_state_mask);
536
537 switch (bytecode()) {
538 case Bytecodes::_ldc:
539 case Bytecodes::_ldc_w:
540 {
541 // tos in (itos, ftos, stos, btos, ctos, ztos)
542 Label notInt, notFloat, notShort, notByte, notChar, notBool;
543 __ cmpl(flags, itos);
544 __ jccb(Assembler::notEqual, notInt);
545 // itos
546 __ movl(rax, field);
547 __ push(itos);
548 __ jmp(Done);
549
550 __ bind(notInt);
551 __ cmpl(flags, ftos);
552 __ jccb(Assembler::notEqual, notFloat);
553 // ftos
554 __ load_float(field);
555 __ push(ftos);
556 __ jmp(Done);
557
558 __ bind(notFloat);
559 __ cmpl(flags, stos);
560 __ jccb(Assembler::notEqual, notShort);
561 // stos
562 __ load_signed_short(rax, field);
563 __ push(stos);
564 __ jmp(Done);
565
566 __ bind(notShort);
567 __ cmpl(flags, btos);
568 __ jccb(Assembler::notEqual, notByte);
569 // btos
570 __ load_signed_byte(rax, field);
571 __ push(btos);
572 __ jmp(Done);
573
574 __ bind(notByte);
575 __ cmpl(flags, ctos);
576 __ jccb(Assembler::notEqual, notChar);
577 // ctos
578 __ load_unsigned_short(rax, field);
579 __ push(ctos);
580 __ jmp(Done);
581
582 __ bind(notChar);
583 __ cmpl(flags, ztos);
584 __ jccb(Assembler::notEqual, notBool);
585 // ztos
586 __ load_signed_byte(rax, field);
587 __ push(ztos);
588 __ jmp(Done);
589
590 __ bind(notBool);
591 break;
592 }
593
594 case Bytecodes::_ldc2_w:
595 {
596 Label notLong, notDouble;
597 __ cmpl(flags, ltos);
598 __ jccb(Assembler::notEqual, notLong);
599 // ltos
600 // Loading high word first because movptr clobbers rax
601 NOT_LP64(__ movptr(rdx, field.plus_disp(4)));
602 __ movptr(rax, field);
603 __ push(ltos);
604 __ jmp(Done);
605
606 __ bind(notLong);
607 __ cmpl(flags, dtos);
608 __ jccb(Assembler::notEqual, notDouble);
609 // dtos
610 __ load_double(field);
611 __ push(dtos);
612 __ jmp(Done);
613
614 __ bind(notDouble);
615 break;
616 }
617
618 default:
619 ShouldNotReachHere();
620 }
621
622 __ stop("bad ldc/condy");
623 }
624
625 void TemplateTable::locals_index(Register reg, int offset) {
626 __ load_unsigned_byte(reg, at_bcp(offset));
627 __ negptr(reg);
628 }
629
630 void TemplateTable::iload() {
631 iload_internal();
632 }
633
634 void TemplateTable::nofast_iload() {
635 iload_internal(may_not_rewrite);
636 }
637
638 void TemplateTable::iload_internal(RewriteControl rc) {
639 transition(vtos, itos);
640 if (RewriteFrequentPairs && rc == may_rewrite) {
641 Label rewrite, done;
642 const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
643 LP64_ONLY(assert(rbx != bc, "register damaged"));
644
645 // get next byte
646 __ load_unsigned_byte(rbx,
647 at_bcp(Bytecodes::length_for(Bytecodes::_iload)));
648 // if _iload, wait to rewrite to iload2. We only want to rewrite the
649 // last two iloads in a pair. Comparing against fast_iload means that
650 // the next bytecode is neither an iload or a caload, and therefore
651 // an iload pair.
652 __ cmpl(rbx, Bytecodes::_iload);
653 __ jcc(Assembler::equal, done);
654
655 __ cmpl(rbx, Bytecodes::_fast_iload);
656 __ movl(bc, Bytecodes::_fast_iload2);
657
658 __ jccb(Assembler::equal, rewrite);
659
660 // if _caload, rewrite to fast_icaload
661 __ cmpl(rbx, Bytecodes::_caload);
662 __ movl(bc, Bytecodes::_fast_icaload);
663 __ jccb(Assembler::equal, rewrite);
664
665 // rewrite so iload doesn't check again.
666 __ movl(bc, Bytecodes::_fast_iload);
667
668 // rewrite
669 // bc: fast bytecode
670 __ bind(rewrite);
671 patch_bytecode(Bytecodes::_iload, bc, rbx, false);
672 __ bind(done);
673 }
674
675 // Get the local value into tos
676 locals_index(rbx);
677 __ movl(rax, iaddress(rbx));
678 }
679
680 void TemplateTable::fast_iload2() {
681 transition(vtos, itos);
682 locals_index(rbx);
683 __ movl(rax, iaddress(rbx));
684 __ push(itos);
685 locals_index(rbx, 3);
686 __ movl(rax, iaddress(rbx));
687 }
688
689 void TemplateTable::fast_iload() {
690 transition(vtos, itos);
691 locals_index(rbx);
692 __ movl(rax, iaddress(rbx));
693 }
694
695 void TemplateTable::lload() {
696 transition(vtos, ltos);
697 locals_index(rbx);
698 __ movptr(rax, laddress(rbx));
699 NOT_LP64(__ movl(rdx, haddress(rbx)));
700 }
701
702 void TemplateTable::fload() {
703 transition(vtos, ftos);
704 locals_index(rbx);
705 __ load_float(faddress(rbx));
706 }
707
708 void TemplateTable::dload() {
709 transition(vtos, dtos);
710 locals_index(rbx);
711 __ load_double(daddress(rbx));
712 }
713
714 void TemplateTable::aload() {
715 transition(vtos, atos);
716 locals_index(rbx);
717 __ movptr(rax, aaddress(rbx));
718 }
719
720 void TemplateTable::locals_index_wide(Register reg) {
721 __ load_unsigned_short(reg, at_bcp(2));
722 __ bswapl(reg);
723 __ shrl(reg, 16);
724 __ negptr(reg);
725 }
726
727 void TemplateTable::wide_iload() {
728 transition(vtos, itos);
729 locals_index_wide(rbx);
730 __ movl(rax, iaddress(rbx));
731 }
732
733 void TemplateTable::wide_lload() {
734 transition(vtos, ltos);
735 locals_index_wide(rbx);
736 __ movptr(rax, laddress(rbx));
737 NOT_LP64(__ movl(rdx, haddress(rbx)));
738 }
739
740 void TemplateTable::wide_fload() {
741 transition(vtos, ftos);
742 locals_index_wide(rbx);
743 __ load_float(faddress(rbx));
744 }
745
746 void TemplateTable::wide_dload() {
747 transition(vtos, dtos);
748 locals_index_wide(rbx);
749 __ load_double(daddress(rbx));
750 }
751
752 void TemplateTable::wide_aload() {
753 transition(vtos, atos);
754 locals_index_wide(rbx);
755 __ movptr(rax, aaddress(rbx));
756 }
757
758 void TemplateTable::index_check(Register array, Register index) {
759 // Pop ptr into array
760 __ pop_ptr(array);
761 index_check_without_pop(array, index);
762 }
763
764 void TemplateTable::index_check_without_pop(Register array, Register index) {
765 // destroys rbx
766 // sign extend index for use by indexed load
767 __ movl2ptr(index, index);
768 // check index
769 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes()));
770 if (index != rbx) {
771 // ??? convention: move aberrant index into rbx for exception message
772 assert(rbx != array, "different registers");
773 __ movl(rbx, index);
774 }
775 Label skip;
776 __ jccb(Assembler::below, skip);
777 // Pass array to create more detailed exceptions.
778 __ mov(NOT_LP64(rax) LP64_ONLY(c_rarg1), array);
779 __ jump(RuntimeAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry));
780 __ bind(skip);
781 }
782
783 void TemplateTable::iaload() {
784 transition(itos, itos);
785 // rax: index
786 // rdx: array
787 index_check(rdx, rax); // kills rbx
788 __ access_load_at(T_INT, IN_HEAP | IS_ARRAY, rax,
789 Address(rdx, rax, Address::times_4,
790 arrayOopDesc::base_offset_in_bytes(T_INT)),
791 noreg, noreg);
792 }
793
794 void TemplateTable::laload() {
795 transition(itos, ltos);
796 // rax: index
797 // rdx: array
798 index_check(rdx, rax); // kills rbx
799 NOT_LP64(__ mov(rbx, rax));
800 // rbx,: index
801 __ access_load_at(T_LONG, IN_HEAP | IS_ARRAY, noreg /* ltos */,
802 Address(rdx, rbx, Address::times_8,
803 arrayOopDesc::base_offset_in_bytes(T_LONG)),
804 noreg, noreg);
805 }
806
807
808
809 void TemplateTable::faload() {
810 transition(itos, ftos);
811 // rax: index
812 // rdx: array
813 index_check(rdx, rax); // kills rbx
814 __ access_load_at(T_FLOAT, IN_HEAP | IS_ARRAY, noreg /* ftos */,
815 Address(rdx, rax,
816 Address::times_4,
817 arrayOopDesc::base_offset_in_bytes(T_FLOAT)),
818 noreg, noreg);
819 }
820
821 void TemplateTable::daload() {
822 transition(itos, dtos);
823 // rax: index
824 // rdx: array
825 index_check(rdx, rax); // kills rbx
826 __ access_load_at(T_DOUBLE, IN_HEAP | IS_ARRAY, noreg /* dtos */,
827 Address(rdx, rax,
828 Address::times_8,
829 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)),
830 noreg, noreg);
831 }
832
833 void TemplateTable::aaload() {
834 transition(itos, atos);
835 Register array = rdx;
836 Register index = rax;
837
838 index_check(array, index); // kills rbx
839 __ profile_array_type<ArrayLoadData>(rbx, array, rcx);
840 if (UseFlatArray) {
841 Label is_flat_array, done;
842 __ test_flat_array_oop(array, rbx, is_flat_array);
843 do_oop_load(_masm,
844 Address(array, index,
845 UseCompressedOops ? Address::times_4 : Address::times_ptr,
846 arrayOopDesc::base_offset_in_bytes(T_OBJECT)),
847 rax,
848 IS_ARRAY);
849 __ jmp(done);
850 __ bind(is_flat_array);
851 __ read_flat_element(array, index, rbx, rcx, rax);
852 __ bind(done);
853 } else {
854 do_oop_load(_masm,
855 Address(array, index,
856 UseCompressedOops ? Address::times_4 : Address::times_ptr,
857 arrayOopDesc::base_offset_in_bytes(T_OBJECT)),
858 rax,
859 IS_ARRAY);
860 }
861 __ profile_element_type(rbx, rax, rcx);
862 }
863
864 void TemplateTable::baload() {
865 transition(itos, itos);
866 // rax: index
867 // rdx: array
868 index_check(rdx, rax); // kills rbx
869 __ access_load_at(T_BYTE, IN_HEAP | IS_ARRAY, rax,
870 Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)),
871 noreg, noreg);
872 }
873
874 void TemplateTable::caload() {
875 transition(itos, itos);
876 // rax: index
877 // rdx: array
878 index_check(rdx, rax); // kills rbx
879 __ access_load_at(T_CHAR, IN_HEAP | IS_ARRAY, rax,
880 Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)),
881 noreg, noreg);
882 }
883
884 // iload followed by caload frequent pair
885 void TemplateTable::fast_icaload() {
886 transition(vtos, itos);
887 // load index out of locals
888 locals_index(rbx);
889 __ movl(rax, iaddress(rbx));
890
891 // rax: index
892 // rdx: array
893 index_check(rdx, rax); // kills rbx
894 __ access_load_at(T_CHAR, IN_HEAP | IS_ARRAY, rax,
895 Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)),
896 noreg, noreg);
897 }
898
899
900 void TemplateTable::saload() {
901 transition(itos, itos);
902 // rax: index
903 // rdx: array
904 index_check(rdx, rax); // kills rbx
905 __ access_load_at(T_SHORT, IN_HEAP | IS_ARRAY, rax,
906 Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT)),
907 noreg, noreg);
908 }
909
910 void TemplateTable::iload(int n) {
911 transition(vtos, itos);
912 __ movl(rax, iaddress(n));
913 }
914
915 void TemplateTable::lload(int n) {
916 transition(vtos, ltos);
917 __ movptr(rax, laddress(n));
918 NOT_LP64(__ movptr(rdx, haddress(n)));
919 }
920
921 void TemplateTable::fload(int n) {
922 transition(vtos, ftos);
923 __ load_float(faddress(n));
924 }
925
926 void TemplateTable::dload(int n) {
927 transition(vtos, dtos);
928 __ load_double(daddress(n));
929 }
930
931 void TemplateTable::aload(int n) {
932 transition(vtos, atos);
933 __ movptr(rax, aaddress(n));
934 }
935
936 void TemplateTable::aload_0() {
937 aload_0_internal();
938 }
939
940 void TemplateTable::nofast_aload_0() {
941 aload_0_internal(may_not_rewrite);
942 }
943
944 void TemplateTable::aload_0_internal(RewriteControl rc) {
945 transition(vtos, atos);
946 // According to bytecode histograms, the pairs:
947 //
948 // _aload_0, _fast_igetfield
949 // _aload_0, _fast_agetfield
950 // _aload_0, _fast_fgetfield
951 //
952 // occur frequently. If RewriteFrequentPairs is set, the (slow)
953 // _aload_0 bytecode checks if the next bytecode is either
954 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then
955 // rewrites the current bytecode into a pair bytecode; otherwise it
956 // rewrites the current bytecode into _fast_aload_0 that doesn't do
957 // the pair check anymore.
958 //
959 // Note: If the next bytecode is _getfield, the rewrite must be
960 // delayed, otherwise we may miss an opportunity for a pair.
961 //
962 // Also rewrite frequent pairs
963 // aload_0, aload_1
964 // aload_0, iload_1
965 // These bytecodes with a small amount of code are most profitable
966 // to rewrite
967 if (RewriteFrequentPairs && rc == may_rewrite) {
968 Label rewrite, done;
969
970 const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
971 LP64_ONLY(assert(rbx != bc, "register damaged"));
972
973 // get next byte
974 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)));
975
976 // if _getfield then wait with rewrite
977 __ cmpl(rbx, Bytecodes::_getfield);
978 __ jcc(Assembler::equal, done);
979
980 // if _igetfield then rewrite to _fast_iaccess_0
981 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
982 __ cmpl(rbx, Bytecodes::_fast_igetfield);
983 __ movl(bc, Bytecodes::_fast_iaccess_0);
984 __ jccb(Assembler::equal, rewrite);
985
986 // if _agetfield then rewrite to _fast_aaccess_0
987 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
988 __ cmpl(rbx, Bytecodes::_fast_agetfield);
989 __ movl(bc, Bytecodes::_fast_aaccess_0);
990 __ jccb(Assembler::equal, rewrite);
991
992 // if _fgetfield then rewrite to _fast_faccess_0
993 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
994 __ cmpl(rbx, Bytecodes::_fast_fgetfield);
995 __ movl(bc, Bytecodes::_fast_faccess_0);
996 __ jccb(Assembler::equal, rewrite);
997
998 // else rewrite to _fast_aload0
999 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition");
1000 __ movl(bc, Bytecodes::_fast_aload_0);
1001
1002 // rewrite
1003 // bc: fast bytecode
1004 __ bind(rewrite);
1005 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false);
1006
1007 __ bind(done);
1008 }
1009
1010 // Do actual aload_0 (must do this after patch_bytecode which might call VM and GC might change oop).
1011 aload(0);
1012 }
1013
1014 void TemplateTable::istore() {
1015 transition(itos, vtos);
1016 locals_index(rbx);
1017 __ movl(iaddress(rbx), rax);
1018 }
1019
1020
1021 void TemplateTable::lstore() {
1022 transition(ltos, vtos);
1023 locals_index(rbx);
1024 __ movptr(laddress(rbx), rax);
1025 NOT_LP64(__ movptr(haddress(rbx), rdx));
1026 }
1027
1028 void TemplateTable::fstore() {
1029 transition(ftos, vtos);
1030 locals_index(rbx);
1031 __ store_float(faddress(rbx));
1032 }
1033
1034 void TemplateTable::dstore() {
1035 transition(dtos, vtos);
1036 locals_index(rbx);
1037 __ store_double(daddress(rbx));
1038 }
1039
1040 void TemplateTable::astore() {
1041 transition(vtos, vtos);
1042 __ pop_ptr(rax);
1043 locals_index(rbx);
1044 __ movptr(aaddress(rbx), rax);
1045 }
1046
1047 void TemplateTable::wide_istore() {
1048 transition(vtos, vtos);
1049 __ pop_i();
1050 locals_index_wide(rbx);
1051 __ movl(iaddress(rbx), rax);
1052 }
1053
1054 void TemplateTable::wide_lstore() {
1055 transition(vtos, vtos);
1056 NOT_LP64(__ pop_l(rax, rdx));
1057 LP64_ONLY(__ pop_l());
1058 locals_index_wide(rbx);
1059 __ movptr(laddress(rbx), rax);
1060 NOT_LP64(__ movl(haddress(rbx), rdx));
1061 }
1062
1063 void TemplateTable::wide_fstore() {
1064 #ifdef _LP64
1065 transition(vtos, vtos);
1066 __ pop_f(xmm0);
1067 locals_index_wide(rbx);
1068 __ movflt(faddress(rbx), xmm0);
1069 #else
1070 wide_istore();
1071 #endif
1072 }
1073
1074 void TemplateTable::wide_dstore() {
1075 #ifdef _LP64
1076 transition(vtos, vtos);
1077 __ pop_d(xmm0);
1078 locals_index_wide(rbx);
1079 __ movdbl(daddress(rbx), xmm0);
1080 #else
1081 wide_lstore();
1082 #endif
1083 }
1084
1085 void TemplateTable::wide_astore() {
1086 transition(vtos, vtos);
1087 __ pop_ptr(rax);
1088 locals_index_wide(rbx);
1089 __ movptr(aaddress(rbx), rax);
1090 }
1091
1092 void TemplateTable::iastore() {
1093 transition(itos, vtos);
1094 __ pop_i(rbx);
1095 // rax: value
1096 // rbx: index
1097 // rdx: array
1098 index_check(rdx, rbx); // prefer index in rbx
1099 __ access_store_at(T_INT, IN_HEAP | IS_ARRAY,
1100 Address(rdx, rbx, Address::times_4,
1101 arrayOopDesc::base_offset_in_bytes(T_INT)),
1102 rax, noreg, noreg, noreg);
1103 }
1104
1105 void TemplateTable::lastore() {
1106 transition(ltos, vtos);
1107 __ pop_i(rbx);
1108 // rax,: low(value)
1109 // rcx: array
1110 // rdx: high(value)
1111 index_check(rcx, rbx); // prefer index in rbx,
1112 // rbx,: index
1113 __ access_store_at(T_LONG, IN_HEAP | IS_ARRAY,
1114 Address(rcx, rbx, Address::times_8,
1115 arrayOopDesc::base_offset_in_bytes(T_LONG)),
1116 noreg /* ltos */, noreg, noreg, noreg);
1117 }
1118
1119
1120 void TemplateTable::fastore() {
1121 transition(ftos, vtos);
1122 __ pop_i(rbx);
1123 // value is in UseSSE >= 1 ? xmm0 : ST(0)
1124 // rbx: index
1125 // rdx: array
1126 index_check(rdx, rbx); // prefer index in rbx
1127 __ access_store_at(T_FLOAT, IN_HEAP | IS_ARRAY,
1128 Address(rdx, rbx, Address::times_4,
1129 arrayOopDesc::base_offset_in_bytes(T_FLOAT)),
1130 noreg /* ftos */, noreg, noreg, noreg);
1131 }
1132
1133 void TemplateTable::dastore() {
1134 transition(dtos, vtos);
1135 __ pop_i(rbx);
1136 // value is in UseSSE >= 2 ? xmm0 : ST(0)
1137 // rbx: index
1138 // rdx: array
1139 index_check(rdx, rbx); // prefer index in rbx
1140 __ access_store_at(T_DOUBLE, IN_HEAP | IS_ARRAY,
1141 Address(rdx, rbx, Address::times_8,
1142 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)),
1143 noreg /* dtos */, noreg, noreg, noreg);
1144 }
1145
1146 void TemplateTable::aastore() {
1147 Label is_null, is_flat_array, ok_is_subtype, done;
1148 transition(vtos, vtos);
1149 // stack: ..., array, index, value
1150 __ movptr(rax, at_tos()); // value
1151 __ movl(rcx, at_tos_p1()); // index
1152 __ movptr(rdx, at_tos_p2()); // array
1153
1154 Address element_address(rdx, rcx,
1155 UseCompressedOops? Address::times_4 : Address::times_ptr,
1156 arrayOopDesc::base_offset_in_bytes(T_OBJECT));
1157
1158 index_check_without_pop(rdx, rcx); // kills rbx
1159
1160 __ profile_array_type<ArrayStoreData>(rdi, rdx, rbx);
1161 __ profile_multiple_element_types(rdi, rax, rbx, rcx);
1162
1163 __ testptr(rax, rax);
1164 __ jcc(Assembler::zero, is_null);
1165
1166 // Move array class to rdi
1167 __ load_klass(rdi, rdx, rscratch1);
1168 if (UseFlatArray) {
1169 __ movl(rbx, Address(rdi, Klass::layout_helper_offset()));
1170 __ test_flat_array_layout(rbx, is_flat_array);
1171 }
1172
1173 // Move subklass into rbx
1174 __ load_klass(rbx, rax, rscratch1);
1175 // Move array element superklass into rax
1176 __ movptr(rax, Address(rdi,
1177 ObjArrayKlass::element_klass_offset()));
1178
1179 // Generate subtype check. Blows rcx, rdi
1180 // Superklass in rax. Subklass in rbx.
1181 // is "rbx <: rax" ? (value subclass <: array element superclass)
1182 __ gen_subtype_check(rbx, ok_is_subtype, false);
1183
1184 // Come here on failure
1185 // object is at TOS
1186 __ jump(RuntimeAddress(Interpreter::_throw_ArrayStoreException_entry));
1187
1188 // Come here on success
1189 __ bind(ok_is_subtype);
1190
1191 // Get the value we will store
1192 __ movptr(rax, at_tos());
1193 __ movl(rcx, at_tos_p1()); // index
1194 // Now store using the appropriate barrier
1195 do_oop_store(_masm, element_address, rax, IS_ARRAY);
1196 __ jmp(done);
1197
1198 // Have a null in rax, rdx=array, ecx=index. Store null at ary[idx]
1199 __ bind(is_null);
1200 if (EnableValhalla) {
1201 Label is_null_into_value_array_npe, store_null;
1202
1203 // No way to store null in null-free array
1204 __ test_null_free_array_oop(rdx, rbx, is_null_into_value_array_npe);
1205 __ jmp(store_null);
1206
1207 __ bind(is_null_into_value_array_npe);
1208 __ jump(RuntimeAddress(Interpreter::_throw_NullPointerException_entry));
1209
1210 __ bind(store_null);
1211 }
1212 // Store a null
1213 do_oop_store(_masm, element_address, noreg, IS_ARRAY);
1214 __ jmp(done);
1215
1216 if (UseFlatArray) {
1217 Label is_type_ok;
1218 __ bind(is_flat_array); // Store non-null value to flat
1219
1220 // Simplistic type check...
1221
1222 // Profile the not-null value's klass.
1223 __ load_klass(rbx, rax, rscratch1);
1224 // Move element klass into rax
1225 __ movptr(rax, Address(rdi, ArrayKlass::element_klass_offset()));
1226 // flat value array needs exact type match
1227 // is "rax == rbx" (value subclass == array element superclass)
1228 __ cmpptr(rax, rbx);
1229 __ jccb(Assembler::equal, is_type_ok);
1230
1231 __ jump(RuntimeAddress(Interpreter::_throw_ArrayStoreException_entry));
1232
1233 __ bind(is_type_ok);
1234 // rbx: value's klass
1235 // rdx: array
1236 // rdi: array klass
1237 __ test_klass_is_empty_inline_type(rbx, rax, done);
1238
1239 // calc dst for copy
1240 __ movl(rax, at_tos_p1()); // index
1241 __ data_for_value_array_index(rdx, rdi, rax, rax);
1242
1243 // ...and src for copy
1244 __ movptr(rcx, at_tos()); // value
1245 __ data_for_oop(rcx, rcx, rbx);
1246
1247 __ access_value_copy(IN_HEAP, rcx, rax, rbx);
1248 }
1249 // Pop stack arguments
1250 __ bind(done);
1251 __ addptr(rsp, 3 * Interpreter::stackElementSize);
1252 }
1253
1254 void TemplateTable::bastore() {
1255 transition(itos, vtos);
1256 __ pop_i(rbx);
1257 // rax: value
1258 // rbx: index
1259 // rdx: array
1260 index_check(rdx, rbx); // prefer index in rbx
1261 // Need to check whether array is boolean or byte
1262 // since both types share the bastore bytecode.
1263 __ load_klass(rcx, rdx, rscratch1);
1264 __ movl(rcx, Address(rcx, Klass::layout_helper_offset()));
1265 int diffbit = Klass::layout_helper_boolean_diffbit();
1266 __ testl(rcx, diffbit);
1267 Label L_skip;
1268 __ jccb(Assembler::zero, L_skip);
1269 __ andl(rax, 1); // if it is a T_BOOLEAN array, mask the stored value to 0/1
1270 __ bind(L_skip);
1271 __ access_store_at(T_BYTE, IN_HEAP | IS_ARRAY,
1272 Address(rdx, rbx,Address::times_1,
1273 arrayOopDesc::base_offset_in_bytes(T_BYTE)),
1274 rax, noreg, noreg, noreg);
1275 }
1276
1277 void TemplateTable::castore() {
1278 transition(itos, vtos);
1279 __ pop_i(rbx);
1280 // rax: value
1281 // rbx: index
1282 // rdx: array
1283 index_check(rdx, rbx); // prefer index in rbx
1284 __ access_store_at(T_CHAR, IN_HEAP | IS_ARRAY,
1285 Address(rdx, rbx, Address::times_2,
1286 arrayOopDesc::base_offset_in_bytes(T_CHAR)),
1287 rax, noreg, noreg, noreg);
1288 }
1289
1290
1291 void TemplateTable::sastore() {
1292 castore();
1293 }
1294
1295 void TemplateTable::istore(int n) {
1296 transition(itos, vtos);
1297 __ movl(iaddress(n), rax);
1298 }
1299
1300 void TemplateTable::lstore(int n) {
1301 transition(ltos, vtos);
1302 __ movptr(laddress(n), rax);
1303 NOT_LP64(__ movptr(haddress(n), rdx));
1304 }
1305
1306 void TemplateTable::fstore(int n) {
1307 transition(ftos, vtos);
1308 __ store_float(faddress(n));
1309 }
1310
1311 void TemplateTable::dstore(int n) {
1312 transition(dtos, vtos);
1313 __ store_double(daddress(n));
1314 }
1315
1316
1317 void TemplateTable::astore(int n) {
1318 transition(vtos, vtos);
1319 __ pop_ptr(rax);
1320 __ movptr(aaddress(n), rax);
1321 }
1322
1323 void TemplateTable::pop() {
1324 transition(vtos, vtos);
1325 __ addptr(rsp, Interpreter::stackElementSize);
1326 }
1327
1328 void TemplateTable::pop2() {
1329 transition(vtos, vtos);
1330 __ addptr(rsp, 2 * Interpreter::stackElementSize);
1331 }
1332
1333
1334 void TemplateTable::dup() {
1335 transition(vtos, vtos);
1336 __ load_ptr(0, rax);
1337 __ push_ptr(rax);
1338 // stack: ..., a, a
1339 }
1340
1341 void TemplateTable::dup_x1() {
1342 transition(vtos, vtos);
1343 // stack: ..., a, b
1344 __ load_ptr( 0, rax); // load b
1345 __ load_ptr( 1, rcx); // load a
1346 __ store_ptr(1, rax); // store b
1347 __ store_ptr(0, rcx); // store a
1348 __ push_ptr(rax); // push b
1349 // stack: ..., b, a, b
1350 }
1351
1352 void TemplateTable::dup_x2() {
1353 transition(vtos, vtos);
1354 // stack: ..., a, b, c
1355 __ load_ptr( 0, rax); // load c
1356 __ load_ptr( 2, rcx); // load a
1357 __ store_ptr(2, rax); // store c in a
1358 __ push_ptr(rax); // push c
1359 // stack: ..., c, b, c, c
1360 __ load_ptr( 2, rax); // load b
1361 __ store_ptr(2, rcx); // store a in b
1362 // stack: ..., c, a, c, c
1363 __ store_ptr(1, rax); // store b in c
1364 // stack: ..., c, a, b, c
1365 }
1366
1367 void TemplateTable::dup2() {
1368 transition(vtos, vtos);
1369 // stack: ..., a, b
1370 __ load_ptr(1, rax); // load a
1371 __ push_ptr(rax); // push a
1372 __ load_ptr(1, rax); // load b
1373 __ push_ptr(rax); // push b
1374 // stack: ..., a, b, a, b
1375 }
1376
1377
1378 void TemplateTable::dup2_x1() {
1379 transition(vtos, vtos);
1380 // stack: ..., a, b, c
1381 __ load_ptr( 0, rcx); // load c
1382 __ load_ptr( 1, rax); // load b
1383 __ push_ptr(rax); // push b
1384 __ push_ptr(rcx); // push c
1385 // stack: ..., a, b, c, b, c
1386 __ store_ptr(3, rcx); // store c in b
1387 // stack: ..., a, c, c, b, c
1388 __ load_ptr( 4, rcx); // load a
1389 __ store_ptr(2, rcx); // store a in 2nd c
1390 // stack: ..., a, c, a, b, c
1391 __ store_ptr(4, rax); // store b in a
1392 // stack: ..., b, c, a, b, c
1393 }
1394
1395 void TemplateTable::dup2_x2() {
1396 transition(vtos, vtos);
1397 // stack: ..., a, b, c, d
1398 __ load_ptr( 0, rcx); // load d
1399 __ load_ptr( 1, rax); // load c
1400 __ push_ptr(rax); // push c
1401 __ push_ptr(rcx); // push d
1402 // stack: ..., a, b, c, d, c, d
1403 __ load_ptr( 4, rax); // load b
1404 __ store_ptr(2, rax); // store b in d
1405 __ store_ptr(4, rcx); // store d in b
1406 // stack: ..., a, d, c, b, c, d
1407 __ load_ptr( 5, rcx); // load a
1408 __ load_ptr( 3, rax); // load c
1409 __ store_ptr(3, rcx); // store a in c
1410 __ store_ptr(5, rax); // store c in a
1411 // stack: ..., c, d, a, b, c, d
1412 }
1413
1414 void TemplateTable::swap() {
1415 transition(vtos, vtos);
1416 // stack: ..., a, b
1417 __ load_ptr( 1, rcx); // load a
1418 __ load_ptr( 0, rax); // load b
1419 __ store_ptr(0, rcx); // store a in b
1420 __ store_ptr(1, rax); // store b in a
1421 // stack: ..., b, a
1422 }
1423
1424 void TemplateTable::iop2(Operation op) {
1425 transition(itos, itos);
1426 switch (op) {
1427 case add : __ pop_i(rdx); __ addl (rax, rdx); break;
1428 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break;
1429 case mul : __ pop_i(rdx); __ imull(rax, rdx); break;
1430 case _and : __ pop_i(rdx); __ andl (rax, rdx); break;
1431 case _or : __ pop_i(rdx); __ orl (rax, rdx); break;
1432 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break;
1433 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break;
1434 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break;
1435 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break;
1436 default : ShouldNotReachHere();
1437 }
1438 }
1439
1440 void TemplateTable::lop2(Operation op) {
1441 transition(ltos, ltos);
1442 #ifdef _LP64
1443 switch (op) {
1444 case add : __ pop_l(rdx); __ addptr(rax, rdx); break;
1445 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break;
1446 case _and : __ pop_l(rdx); __ andptr(rax, rdx); break;
1447 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break;
1448 case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break;
1449 default : ShouldNotReachHere();
1450 }
1451 #else
1452 __ pop_l(rbx, rcx);
1453 switch (op) {
1454 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break;
1455 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx);
1456 __ mov (rax, rbx); __ mov (rdx, rcx); break;
1457 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break;
1458 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break;
1459 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break;
1460 default : ShouldNotReachHere();
1461 }
1462 #endif
1463 }
1464
1465 void TemplateTable::idiv() {
1466 transition(itos, itos);
1467 __ movl(rcx, rax);
1468 __ pop_i(rax);
1469 // Note: could xor rax and ecx and compare with (-1 ^ min_int). If
1470 // they are not equal, one could do a normal division (no correction
1471 // needed), which may speed up this implementation for the common case.
1472 // (see also JVM spec., p.243 & p.271)
1473 __ corrected_idivl(rcx);
1474 }
1475
1476 void TemplateTable::irem() {
1477 transition(itos, itos);
1478 __ movl(rcx, rax);
1479 __ pop_i(rax);
1480 // Note: could xor rax and ecx and compare with (-1 ^ min_int). If
1481 // they are not equal, one could do a normal division (no correction
1482 // needed), which may speed up this implementation for the common case.
1483 // (see also JVM spec., p.243 & p.271)
1484 __ corrected_idivl(rcx);
1485 __ movl(rax, rdx);
1486 }
1487
1488 void TemplateTable::lmul() {
1489 transition(ltos, ltos);
1490 #ifdef _LP64
1491 __ pop_l(rdx);
1492 __ imulq(rax, rdx);
1493 #else
1494 __ pop_l(rbx, rcx);
1495 __ push(rcx); __ push(rbx);
1496 __ push(rdx); __ push(rax);
1497 __ lmul(2 * wordSize, 0);
1498 __ addptr(rsp, 4 * wordSize); // take off temporaries
1499 #endif
1500 }
1501
1502 void TemplateTable::ldiv() {
1503 transition(ltos, ltos);
1504 #ifdef _LP64
1505 __ mov(rcx, rax);
1506 __ pop_l(rax);
1507 // generate explicit div0 check
1508 __ testq(rcx, rcx);
1509 __ jump_cc(Assembler::zero,
1510 RuntimeAddress(Interpreter::_throw_ArithmeticException_entry));
1511 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If
1512 // they are not equal, one could do a normal division (no correction
1513 // needed), which may speed up this implementation for the common case.
1514 // (see also JVM spec., p.243 & p.271)
1515 __ corrected_idivq(rcx); // kills rbx
1516 #else
1517 __ pop_l(rbx, rcx);
1518 __ push(rcx); __ push(rbx);
1519 __ push(rdx); __ push(rax);
1520 // check if y = 0
1521 __ orl(rax, rdx);
1522 __ jump_cc(Assembler::zero,
1523 RuntimeAddress(Interpreter::_throw_ArithmeticException_entry));
1524 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv));
1525 __ addptr(rsp, 4 * wordSize); // take off temporaries
1526 #endif
1527 }
1528
1529 void TemplateTable::lrem() {
1530 transition(ltos, ltos);
1531 #ifdef _LP64
1532 __ mov(rcx, rax);
1533 __ pop_l(rax);
1534 __ testq(rcx, rcx);
1535 __ jump_cc(Assembler::zero,
1536 RuntimeAddress(Interpreter::_throw_ArithmeticException_entry));
1537 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If
1538 // they are not equal, one could do a normal division (no correction
1539 // needed), which may speed up this implementation for the common case.
1540 // (see also JVM spec., p.243 & p.271)
1541 __ corrected_idivq(rcx); // kills rbx
1542 __ mov(rax, rdx);
1543 #else
1544 __ pop_l(rbx, rcx);
1545 __ push(rcx); __ push(rbx);
1546 __ push(rdx); __ push(rax);
1547 // check if y = 0
1548 __ orl(rax, rdx);
1549 __ jump_cc(Assembler::zero,
1550 RuntimeAddress(Interpreter::_throw_ArithmeticException_entry));
1551 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem));
1552 __ addptr(rsp, 4 * wordSize);
1553 #endif
1554 }
1555
1556 void TemplateTable::lshl() {
1557 transition(itos, ltos);
1558 __ movl(rcx, rax); // get shift count
1559 #ifdef _LP64
1560 __ pop_l(rax); // get shift value
1561 __ shlq(rax);
1562 #else
1563 __ pop_l(rax, rdx); // get shift value
1564 __ lshl(rdx, rax);
1565 #endif
1566 }
1567
1568 void TemplateTable::lshr() {
1569 #ifdef _LP64
1570 transition(itos, ltos);
1571 __ movl(rcx, rax); // get shift count
1572 __ pop_l(rax); // get shift value
1573 __ sarq(rax);
1574 #else
1575 transition(itos, ltos);
1576 __ mov(rcx, rax); // get shift count
1577 __ pop_l(rax, rdx); // get shift value
1578 __ lshr(rdx, rax, true);
1579 #endif
1580 }
1581
1582 void TemplateTable::lushr() {
1583 transition(itos, ltos);
1584 #ifdef _LP64
1585 __ movl(rcx, rax); // get shift count
1586 __ pop_l(rax); // get shift value
1587 __ shrq(rax);
1588 #else
1589 __ mov(rcx, rax); // get shift count
1590 __ pop_l(rax, rdx); // get shift value
1591 __ lshr(rdx, rax);
1592 #endif
1593 }
1594
1595 void TemplateTable::fop2(Operation op) {
1596 transition(ftos, ftos);
1597
1598 if (UseSSE >= 1) {
1599 switch (op) {
1600 case add:
1601 __ addss(xmm0, at_rsp());
1602 __ addptr(rsp, Interpreter::stackElementSize);
1603 break;
1604 case sub:
1605 __ movflt(xmm1, xmm0);
1606 __ pop_f(xmm0);
1607 __ subss(xmm0, xmm1);
1608 break;
1609 case mul:
1610 __ mulss(xmm0, at_rsp());
1611 __ addptr(rsp, Interpreter::stackElementSize);
1612 break;
1613 case div:
1614 __ movflt(xmm1, xmm0);
1615 __ pop_f(xmm0);
1616 __ divss(xmm0, xmm1);
1617 break;
1618 case rem:
1619 // On x86_64 platforms the SharedRuntime::frem method is called to perform the
1620 // modulo operation. The frem method calls the function
1621 // double fmod(double x, double y) in math.h. The documentation of fmod states:
1622 // "If x or y is a NaN, a NaN is returned." without specifying what type of NaN
1623 // (signalling or quiet) is returned.
1624 //
1625 // On x86_32 platforms the FPU is used to perform the modulo operation. The
1626 // reason is that on 32-bit Windows the sign of modulo operations diverges from
1627 // what is considered the standard (e.g., -0.0f % -3.14f is 0.0f (and not -0.0f).
1628 // The fprem instruction used on x86_32 is functionally equivalent to
1629 // SharedRuntime::frem in that it returns a NaN.
1630 #ifdef _LP64
1631 __ movflt(xmm1, xmm0);
1632 __ pop_f(xmm0);
1633 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2);
1634 #else // !_LP64
1635 __ push_f(xmm0);
1636 __ pop_f();
1637 __ fld_s(at_rsp());
1638 __ fremr(rax);
1639 __ f2ieee();
1640 __ pop(rax); // pop second operand off the stack
1641 __ push_f();
1642 __ pop_f(xmm0);
1643 #endif // _LP64
1644 break;
1645 default:
1646 ShouldNotReachHere();
1647 break;
1648 }
1649 } else {
1650 #ifdef _LP64
1651 ShouldNotReachHere();
1652 #else // !_LP64
1653 switch (op) {
1654 case add: __ fadd_s (at_rsp()); break;
1655 case sub: __ fsubr_s(at_rsp()); break;
1656 case mul: __ fmul_s (at_rsp()); break;
1657 case div: __ fdivr_s(at_rsp()); break;
1658 case rem: __ fld_s (at_rsp()); __ fremr(rax); break;
1659 default : ShouldNotReachHere();
1660 }
1661 __ f2ieee();
1662 __ pop(rax); // pop second operand off the stack
1663 #endif // _LP64
1664 }
1665 }
1666
1667 void TemplateTable::dop2(Operation op) {
1668 transition(dtos, dtos);
1669 if (UseSSE >= 2) {
1670 switch (op) {
1671 case add:
1672 __ addsd(xmm0, at_rsp());
1673 __ addptr(rsp, 2 * Interpreter::stackElementSize);
1674 break;
1675 case sub:
1676 __ movdbl(xmm1, xmm0);
1677 __ pop_d(xmm0);
1678 __ subsd(xmm0, xmm1);
1679 break;
1680 case mul:
1681 __ mulsd(xmm0, at_rsp());
1682 __ addptr(rsp, 2 * Interpreter::stackElementSize);
1683 break;
1684 case div:
1685 __ movdbl(xmm1, xmm0);
1686 __ pop_d(xmm0);
1687 __ divsd(xmm0, xmm1);
1688 break;
1689 case rem:
1690 // Similar to fop2(), the modulo operation is performed using the
1691 // SharedRuntime::drem method (on x86_64 platforms) or using the
1692 // FPU (on x86_32 platforms) for the same reasons as mentioned in fop2().
1693 #ifdef _LP64
1694 __ movdbl(xmm1, xmm0);
1695 __ pop_d(xmm0);
1696 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2);
1697 #else // !_LP64
1698 __ push_d(xmm0);
1699 __ pop_d();
1700 __ fld_d(at_rsp());
1701 __ fremr(rax);
1702 __ d2ieee();
1703 __ pop(rax);
1704 __ pop(rdx);
1705 __ push_d();
1706 __ pop_d(xmm0);
1707 #endif // _LP64
1708 break;
1709 default:
1710 ShouldNotReachHere();
1711 break;
1712 }
1713 } else {
1714 #ifdef _LP64
1715 ShouldNotReachHere();
1716 #else // !_LP64
1717 switch (op) {
1718 case add: __ fadd_d (at_rsp()); break;
1719 case sub: __ fsubr_d(at_rsp()); break;
1720 case mul: {
1721 // strict semantics
1722 __ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias1()));
1723 __ fmulp();
1724 __ fmul_d (at_rsp());
1725 __ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias2()));
1726 __ fmulp();
1727 break;
1728 }
1729 case div: {
1730 // strict semantics
1731 __ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias1()));
1732 __ fmul_d (at_rsp());
1733 __ fdivrp();
1734 __ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias2()));
1735 __ fmulp();
1736 break;
1737 }
1738 case rem: __ fld_d (at_rsp()); __ fremr(rax); break;
1739 default : ShouldNotReachHere();
1740 }
1741 __ d2ieee();
1742 // Pop double precision number from rsp.
1743 __ pop(rax);
1744 __ pop(rdx);
1745 #endif // _LP64
1746 }
1747 }
1748
1749 void TemplateTable::ineg() {
1750 transition(itos, itos);
1751 __ negl(rax);
1752 }
1753
1754 void TemplateTable::lneg() {
1755 transition(ltos, ltos);
1756 LP64_ONLY(__ negq(rax));
1757 NOT_LP64(__ lneg(rdx, rax));
1758 }
1759
1760 // Note: 'double' and 'long long' have 32-bits alignment on x86.
1761 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) {
1762 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address
1763 // of 128-bits operands for SSE instructions.
1764 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF)));
1765 // Store the value to a 128-bits operand.
1766 operand[0] = lo;
1767 operand[1] = hi;
1768 return operand;
1769 }
1770
1771 // Buffer for 128-bits masks used by SSE instructions.
1772 static jlong float_signflip_pool[2*2];
1773 static jlong double_signflip_pool[2*2];
1774
1775 void TemplateTable::fneg() {
1776 transition(ftos, ftos);
1777 if (UseSSE >= 1) {
1778 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], CONST64(0x8000000080000000), CONST64(0x8000000080000000));
1779 __ xorps(xmm0, ExternalAddress((address) float_signflip), rscratch1);
1780 } else {
1781 LP64_ONLY(ShouldNotReachHere());
1782 NOT_LP64(__ fchs());
1783 }
1784 }
1785
1786 void TemplateTable::dneg() {
1787 transition(dtos, dtos);
1788 if (UseSSE >= 2) {
1789 static jlong *double_signflip =
1790 double_quadword(&double_signflip_pool[1], CONST64(0x8000000000000000), CONST64(0x8000000000000000));
1791 __ xorpd(xmm0, ExternalAddress((address) double_signflip), rscratch1);
1792 } else {
1793 #ifdef _LP64
1794 ShouldNotReachHere();
1795 #else
1796 __ fchs();
1797 #endif
1798 }
1799 }
1800
1801 void TemplateTable::iinc() {
1802 transition(vtos, vtos);
1803 __ load_signed_byte(rdx, at_bcp(2)); // get constant
1804 locals_index(rbx);
1805 __ addl(iaddress(rbx), rdx);
1806 }
1807
1808 void TemplateTable::wide_iinc() {
1809 transition(vtos, vtos);
1810 __ movl(rdx, at_bcp(4)); // get constant
1811 locals_index_wide(rbx);
1812 __ bswapl(rdx); // swap bytes & sign-extend constant
1813 __ sarl(rdx, 16);
1814 __ addl(iaddress(rbx), rdx);
1815 // Note: should probably use only one movl to get both
1816 // the index and the constant -> fix this
1817 }
1818
1819 void TemplateTable::convert() {
1820 #ifdef _LP64
1821 // Checking
1822 #ifdef ASSERT
1823 {
1824 TosState tos_in = ilgl;
1825 TosState tos_out = ilgl;
1826 switch (bytecode()) {
1827 case Bytecodes::_i2l: // fall through
1828 case Bytecodes::_i2f: // fall through
1829 case Bytecodes::_i2d: // fall through
1830 case Bytecodes::_i2b: // fall through
1831 case Bytecodes::_i2c: // fall through
1832 case Bytecodes::_i2s: tos_in = itos; break;
1833 case Bytecodes::_l2i: // fall through
1834 case Bytecodes::_l2f: // fall through
1835 case Bytecodes::_l2d: tos_in = ltos; break;
1836 case Bytecodes::_f2i: // fall through
1837 case Bytecodes::_f2l: // fall through
1838 case Bytecodes::_f2d: tos_in = ftos; break;
1839 case Bytecodes::_d2i: // fall through
1840 case Bytecodes::_d2l: // fall through
1841 case Bytecodes::_d2f: tos_in = dtos; break;
1842 default : ShouldNotReachHere();
1843 }
1844 switch (bytecode()) {
1845 case Bytecodes::_l2i: // fall through
1846 case Bytecodes::_f2i: // fall through
1847 case Bytecodes::_d2i: // fall through
1848 case Bytecodes::_i2b: // fall through
1849 case Bytecodes::_i2c: // fall through
1850 case Bytecodes::_i2s: tos_out = itos; break;
1851 case Bytecodes::_i2l: // fall through
1852 case Bytecodes::_f2l: // fall through
1853 case Bytecodes::_d2l: tos_out = ltos; break;
1854 case Bytecodes::_i2f: // fall through
1855 case Bytecodes::_l2f: // fall through
1856 case Bytecodes::_d2f: tos_out = ftos; break;
1857 case Bytecodes::_i2d: // fall through
1858 case Bytecodes::_l2d: // fall through
1859 case Bytecodes::_f2d: tos_out = dtos; break;
1860 default : ShouldNotReachHere();
1861 }
1862 transition(tos_in, tos_out);
1863 }
1864 #endif // ASSERT
1865
1866 static const int64_t is_nan = 0x8000000000000000L;
1867
1868 // Conversion
1869 switch (bytecode()) {
1870 case Bytecodes::_i2l:
1871 __ movslq(rax, rax);
1872 break;
1873 case Bytecodes::_i2f:
1874 __ cvtsi2ssl(xmm0, rax);
1875 break;
1876 case Bytecodes::_i2d:
1877 __ cvtsi2sdl(xmm0, rax);
1878 break;
1879 case Bytecodes::_i2b:
1880 __ movsbl(rax, rax);
1881 break;
1882 case Bytecodes::_i2c:
1883 __ movzwl(rax, rax);
1884 break;
1885 case Bytecodes::_i2s:
1886 __ movswl(rax, rax);
1887 break;
1888 case Bytecodes::_l2i:
1889 __ movl(rax, rax);
1890 break;
1891 case Bytecodes::_l2f:
1892 __ cvtsi2ssq(xmm0, rax);
1893 break;
1894 case Bytecodes::_l2d:
1895 __ cvtsi2sdq(xmm0, rax);
1896 break;
1897 case Bytecodes::_f2i:
1898 {
1899 Label L;
1900 __ cvttss2sil(rax, xmm0);
1901 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow?
1902 __ jcc(Assembler::notEqual, L);
1903 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
1904 __ bind(L);
1905 }
1906 break;
1907 case Bytecodes::_f2l:
1908 {
1909 Label L;
1910 __ cvttss2siq(rax, xmm0);
1911 // NaN or overflow/underflow?
1912 __ cmp64(rax, ExternalAddress((address) &is_nan), rscratch1);
1913 __ jcc(Assembler::notEqual, L);
1914 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
1915 __ bind(L);
1916 }
1917 break;
1918 case Bytecodes::_f2d:
1919 __ cvtss2sd(xmm0, xmm0);
1920 break;
1921 case Bytecodes::_d2i:
1922 {
1923 Label L;
1924 __ cvttsd2sil(rax, xmm0);
1925 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow?
1926 __ jcc(Assembler::notEqual, L);
1927 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1);
1928 __ bind(L);
1929 }
1930 break;
1931 case Bytecodes::_d2l:
1932 {
1933 Label L;
1934 __ cvttsd2siq(rax, xmm0);
1935 // NaN or overflow/underflow?
1936 __ cmp64(rax, ExternalAddress((address) &is_nan), rscratch1);
1937 __ jcc(Assembler::notEqual, L);
1938 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1);
1939 __ bind(L);
1940 }
1941 break;
1942 case Bytecodes::_d2f:
1943 __ cvtsd2ss(xmm0, xmm0);
1944 break;
1945 default:
1946 ShouldNotReachHere();
1947 }
1948 #else // !_LP64
1949 // Checking
1950 #ifdef ASSERT
1951 { TosState tos_in = ilgl;
1952 TosState tos_out = ilgl;
1953 switch (bytecode()) {
1954 case Bytecodes::_i2l: // fall through
1955 case Bytecodes::_i2f: // fall through
1956 case Bytecodes::_i2d: // fall through
1957 case Bytecodes::_i2b: // fall through
1958 case Bytecodes::_i2c: // fall through
1959 case Bytecodes::_i2s: tos_in = itos; break;
1960 case Bytecodes::_l2i: // fall through
1961 case Bytecodes::_l2f: // fall through
1962 case Bytecodes::_l2d: tos_in = ltos; break;
1963 case Bytecodes::_f2i: // fall through
1964 case Bytecodes::_f2l: // fall through
1965 case Bytecodes::_f2d: tos_in = ftos; break;
1966 case Bytecodes::_d2i: // fall through
1967 case Bytecodes::_d2l: // fall through
1968 case Bytecodes::_d2f: tos_in = dtos; break;
1969 default : ShouldNotReachHere();
1970 }
1971 switch (bytecode()) {
1972 case Bytecodes::_l2i: // fall through
1973 case Bytecodes::_f2i: // fall through
1974 case Bytecodes::_d2i: // fall through
1975 case Bytecodes::_i2b: // fall through
1976 case Bytecodes::_i2c: // fall through
1977 case Bytecodes::_i2s: tos_out = itos; break;
1978 case Bytecodes::_i2l: // fall through
1979 case Bytecodes::_f2l: // fall through
1980 case Bytecodes::_d2l: tos_out = ltos; break;
1981 case Bytecodes::_i2f: // fall through
1982 case Bytecodes::_l2f: // fall through
1983 case Bytecodes::_d2f: tos_out = ftos; break;
1984 case Bytecodes::_i2d: // fall through
1985 case Bytecodes::_l2d: // fall through
1986 case Bytecodes::_f2d: tos_out = dtos; break;
1987 default : ShouldNotReachHere();
1988 }
1989 transition(tos_in, tos_out);
1990 }
1991 #endif // ASSERT
1992
1993 // Conversion
1994 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation)
1995 switch (bytecode()) {
1996 case Bytecodes::_i2l:
1997 __ extend_sign(rdx, rax);
1998 break;
1999 case Bytecodes::_i2f:
2000 if (UseSSE >= 1) {
2001 __ cvtsi2ssl(xmm0, rax);
2002 } else {
2003 __ push(rax); // store int on tos
2004 __ fild_s(at_rsp()); // load int to ST0
2005 __ f2ieee(); // truncate to float size
2006 __ pop(rcx); // adjust rsp
2007 }
2008 break;
2009 case Bytecodes::_i2d:
2010 if (UseSSE >= 2) {
2011 __ cvtsi2sdl(xmm0, rax);
2012 } else {
2013 __ push(rax); // add one slot for d2ieee()
2014 __ push(rax); // store int on tos
2015 __ fild_s(at_rsp()); // load int to ST0
2016 __ d2ieee(); // truncate to double size
2017 __ pop(rcx); // adjust rsp
2018 __ pop(rcx);
2019 }
2020 break;
2021 case Bytecodes::_i2b:
2022 __ shll(rax, 24); // truncate upper 24 bits
2023 __ sarl(rax, 24); // and sign-extend byte
2024 LP64_ONLY(__ movsbl(rax, rax));
2025 break;
2026 case Bytecodes::_i2c:
2027 __ andl(rax, 0xFFFF); // truncate upper 16 bits
2028 LP64_ONLY(__ movzwl(rax, rax));
2029 break;
2030 case Bytecodes::_i2s:
2031 __ shll(rax, 16); // truncate upper 16 bits
2032 __ sarl(rax, 16); // and sign-extend short
2033 LP64_ONLY(__ movswl(rax, rax));
2034 break;
2035 case Bytecodes::_l2i:
2036 /* nothing to do */
2037 break;
2038 case Bytecodes::_l2f:
2039 // On 64-bit platforms, the cvtsi2ssq instruction is used to convert
2040 // 64-bit long values to floats. On 32-bit platforms it is not possible
2041 // to use that instruction with 64-bit operands, therefore the FPU is
2042 // used to perform the conversion.
2043 __ push(rdx); // store long on tos
2044 __ push(rax);
2045 __ fild_d(at_rsp()); // load long to ST0
2046 __ f2ieee(); // truncate to float size
2047 __ pop(rcx); // adjust rsp
2048 __ pop(rcx);
2049 if (UseSSE >= 1) {
2050 __ push_f();
2051 __ pop_f(xmm0);
2052 }
2053 break;
2054 case Bytecodes::_l2d:
2055 // On 32-bit platforms the FPU is used for conversion because on
2056 // 32-bit platforms it is not not possible to use the cvtsi2sdq
2057 // instruction with 64-bit operands.
2058 __ push(rdx); // store long on tos
2059 __ push(rax);
2060 __ fild_d(at_rsp()); // load long to ST0
2061 __ d2ieee(); // truncate to double size
2062 __ pop(rcx); // adjust rsp
2063 __ pop(rcx);
2064 if (UseSSE >= 2) {
2065 __ push_d();
2066 __ pop_d(xmm0);
2067 }
2068 break;
2069 case Bytecodes::_f2i:
2070 // SharedRuntime::f2i does not differentiate between sNaNs and qNaNs
2071 // as it returns 0 for any NaN.
2072 if (UseSSE >= 1) {
2073 __ push_f(xmm0);
2074 } else {
2075 __ push(rcx); // reserve space for argument
2076 __ fstp_s(at_rsp()); // pass float argument on stack
2077 }
2078 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
2079 break;
2080 case Bytecodes::_f2l:
2081 // SharedRuntime::f2l does not differentiate between sNaNs and qNaNs
2082 // as it returns 0 for any NaN.
2083 if (UseSSE >= 1) {
2084 __ push_f(xmm0);
2085 } else {
2086 __ push(rcx); // reserve space for argument
2087 __ fstp_s(at_rsp()); // pass float argument on stack
2088 }
2089 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
2090 break;
2091 case Bytecodes::_f2d:
2092 if (UseSSE < 1) {
2093 /* nothing to do */
2094 } else if (UseSSE == 1) {
2095 __ push_f(xmm0);
2096 __ pop_f();
2097 } else { // UseSSE >= 2
2098 __ cvtss2sd(xmm0, xmm0);
2099 }
2100 break;
2101 case Bytecodes::_d2i:
2102 if (UseSSE >= 2) {
2103 __ push_d(xmm0);
2104 } else {
2105 __ push(rcx); // reserve space for argument
2106 __ push(rcx);
2107 __ fstp_d(at_rsp()); // pass double argument on stack
2108 }
2109 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2);
2110 break;
2111 case Bytecodes::_d2l:
2112 if (UseSSE >= 2) {
2113 __ push_d(xmm0);
2114 } else {
2115 __ push(rcx); // reserve space for argument
2116 __ push(rcx);
2117 __ fstp_d(at_rsp()); // pass double argument on stack
2118 }
2119 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2);
2120 break;
2121 case Bytecodes::_d2f:
2122 if (UseSSE <= 1) {
2123 __ push(rcx); // reserve space for f2ieee()
2124 __ f2ieee(); // truncate to float size
2125 __ pop(rcx); // adjust rsp
2126 if (UseSSE == 1) {
2127 // The cvtsd2ss instruction is not available if UseSSE==1, therefore
2128 // the conversion is performed using the FPU in this case.
2129 __ push_f();
2130 __ pop_f(xmm0);
2131 }
2132 } else { // UseSSE >= 2
2133 __ cvtsd2ss(xmm0, xmm0);
2134 }
2135 break;
2136 default :
2137 ShouldNotReachHere();
2138 }
2139 #endif // _LP64
2140 }
2141
2142 void TemplateTable::lcmp() {
2143 transition(ltos, itos);
2144 #ifdef _LP64
2145 Label done;
2146 __ pop_l(rdx);
2147 __ cmpq(rdx, rax);
2148 __ movl(rax, -1);
2149 __ jccb(Assembler::less, done);
2150 __ setb(Assembler::notEqual, rax);
2151 __ movzbl(rax, rax);
2152 __ bind(done);
2153 #else
2154
2155 // y = rdx:rax
2156 __ pop_l(rbx, rcx); // get x = rcx:rbx
2157 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y)
2158 __ mov(rax, rcx);
2159 #endif
2160 }
2161
2162 void TemplateTable::float_cmp(bool is_float, int unordered_result) {
2163 if ((is_float && UseSSE >= 1) ||
2164 (!is_float && UseSSE >= 2)) {
2165 Label done;
2166 if (is_float) {
2167 // XXX get rid of pop here, use ... reg, mem32
2168 __ pop_f(xmm1);
2169 __ ucomiss(xmm1, xmm0);
2170 } else {
2171 // XXX get rid of pop here, use ... reg, mem64
2172 __ pop_d(xmm1);
2173 __ ucomisd(xmm1, xmm0);
2174 }
2175 if (unordered_result < 0) {
2176 __ movl(rax, -1);
2177 __ jccb(Assembler::parity, done);
2178 __ jccb(Assembler::below, done);
2179 __ setb(Assembler::notEqual, rdx);
2180 __ movzbl(rax, rdx);
2181 } else {
2182 __ movl(rax, 1);
2183 __ jccb(Assembler::parity, done);
2184 __ jccb(Assembler::above, done);
2185 __ movl(rax, 0);
2186 __ jccb(Assembler::equal, done);
2187 __ decrementl(rax);
2188 }
2189 __ bind(done);
2190 } else {
2191 #ifdef _LP64
2192 ShouldNotReachHere();
2193 #else // !_LP64
2194 if (is_float) {
2195 __ fld_s(at_rsp());
2196 } else {
2197 __ fld_d(at_rsp());
2198 __ pop(rdx);
2199 }
2200 __ pop(rcx);
2201 __ fcmp2int(rax, unordered_result < 0);
2202 #endif // _LP64
2203 }
2204 }
2205
2206 void TemplateTable::branch(bool is_jsr, bool is_wide) {
2207 __ get_method(rcx); // rcx holds method
2208 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx
2209 // holds bumped taken count
2210
2211 const ByteSize be_offset = MethodCounters::backedge_counter_offset() +
2212 InvocationCounter::counter_offset();
2213 const ByteSize inv_offset = MethodCounters::invocation_counter_offset() +
2214 InvocationCounter::counter_offset();
2215
2216 // Load up edx with the branch displacement
2217 if (is_wide) {
2218 __ movl(rdx, at_bcp(1));
2219 } else {
2220 __ load_signed_short(rdx, at_bcp(1));
2221 }
2222 __ bswapl(rdx);
2223
2224 if (!is_wide) {
2225 __ sarl(rdx, 16);
2226 }
2227 LP64_ONLY(__ movl2ptr(rdx, rdx));
2228
2229 // Handle all the JSR stuff here, then exit.
2230 // It's much shorter and cleaner than intermingling with the non-JSR
2231 // normal-branch stuff occurring below.
2232 if (is_jsr) {
2233 // Pre-load the next target bytecode into rbx
2234 __ load_unsigned_byte(rbx, Address(rbcp, rdx, Address::times_1, 0));
2235
2236 // compute return address as bci in rax
2237 __ lea(rax, at_bcp((is_wide ? 5 : 3) -
2238 in_bytes(ConstMethod::codes_offset())));
2239 __ subptr(rax, Address(rcx, Method::const_offset()));
2240 // Adjust the bcp in r13 by the displacement in rdx
2241 __ addptr(rbcp, rdx);
2242 // jsr returns atos that is not an oop
2243 __ push_i(rax);
2244 __ dispatch_only(vtos, true);
2245 return;
2246 }
2247
2248 // Normal (non-jsr) branch handling
2249
2250 // Adjust the bcp in r13 by the displacement in rdx
2251 __ addptr(rbcp, rdx);
2252
2253 assert(UseLoopCounter || !UseOnStackReplacement,
2254 "on-stack-replacement requires loop counters");
2255 Label backedge_counter_overflow;
2256 Label dispatch;
2257 if (UseLoopCounter) {
2258 // increment backedge counter for backward branches
2259 // rax: MDO
2260 // rbx: MDO bumped taken-count
2261 // rcx: method
2262 // rdx: target offset
2263 // r13: target bcp
2264 // r14: locals pointer
2265 __ testl(rdx, rdx); // check if forward or backward branch
2266 __ jcc(Assembler::positive, dispatch); // count only if backward branch
2267
2268 // check if MethodCounters exists
2269 Label has_counters;
2270 __ movptr(rax, Address(rcx, Method::method_counters_offset()));
2271 __ testptr(rax, rax);
2272 __ jcc(Assembler::notZero, has_counters);
2273 __ push(rdx);
2274 __ push(rcx);
2275 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters),
2276 rcx);
2277 __ pop(rcx);
2278 __ pop(rdx);
2279 __ movptr(rax, Address(rcx, Method::method_counters_offset()));
2280 __ testptr(rax, rax);
2281 __ jcc(Assembler::zero, dispatch);
2282 __ bind(has_counters);
2283
2284 Label no_mdo;
2285 if (ProfileInterpreter) {
2286 // Are we profiling?
2287 __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset())));
2288 __ testptr(rbx, rbx);
2289 __ jccb(Assembler::zero, no_mdo);
2290 // Increment the MDO backedge counter
2291 const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) +
2292 in_bytes(InvocationCounter::counter_offset()));
2293 const Address mask(rbx, in_bytes(MethodData::backedge_mask_offset()));
2294 __ increment_mask_and_jump(mdo_backedge_counter, mask, rax,
2295 UseOnStackReplacement ? &backedge_counter_overflow : nullptr);
2296 __ jmp(dispatch);
2297 }
2298 __ bind(no_mdo);
2299 // Increment backedge counter in MethodCounters*
2300 __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
2301 const Address mask(rcx, in_bytes(MethodCounters::backedge_mask_offset()));
2302 __ increment_mask_and_jump(Address(rcx, be_offset), mask, rax,
2303 UseOnStackReplacement ? &backedge_counter_overflow : nullptr);
2304 __ bind(dispatch);
2305 }
2306
2307 // Pre-load the next target bytecode into rbx
2308 __ load_unsigned_byte(rbx, Address(rbcp, 0));
2309
2310 // continue with the bytecode @ target
2311 // rax: return bci for jsr's, unused otherwise
2312 // rbx: target bytecode
2313 // r13: target bcp
2314 __ dispatch_only(vtos, true);
2315
2316 if (UseLoopCounter) {
2317 if (UseOnStackReplacement) {
2318 Label set_mdp;
2319 // invocation counter overflow
2320 __ bind(backedge_counter_overflow);
2321 __ negptr(rdx);
2322 __ addptr(rdx, rbcp); // branch bcp
2323 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp)
2324 __ call_VM(noreg,
2325 CAST_FROM_FN_PTR(address,
2326 InterpreterRuntime::frequency_counter_overflow),
2327 rdx);
2328
2329 // rax: osr nmethod (osr ok) or null (osr not possible)
2330 // rdx: scratch
2331 // r14: locals pointer
2332 // r13: bcp
2333 __ testptr(rax, rax); // test result
2334 __ jcc(Assembler::zero, dispatch); // no osr if null
2335 // nmethod may have been invalidated (VM may block upon call_VM return)
2336 __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
2337 __ jcc(Assembler::notEqual, dispatch);
2338
2339 // We have the address of an on stack replacement routine in rax.
2340 // In preparation of invoking it, first we must migrate the locals
2341 // and monitors from off the interpreter frame on the stack.
2342 // Ensure to save the osr nmethod over the migration call,
2343 // it will be preserved in rbx.
2344 __ mov(rbx, rax);
2345
2346 NOT_LP64(__ get_thread(rcx));
2347
2348 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
2349
2350 // rax is OSR buffer, move it to expected parameter location
2351 LP64_ONLY(__ mov(j_rarg0, rax));
2352 NOT_LP64(__ mov(rcx, rax));
2353 // We use j_rarg definitions here so that registers don't conflict as parameter
2354 // registers change across platforms as we are in the midst of a calling
2355 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters.
2356
2357 const Register retaddr = LP64_ONLY(j_rarg2) NOT_LP64(rdi);
2358 const Register sender_sp = LP64_ONLY(j_rarg1) NOT_LP64(rdx);
2359
2360 // pop the interpreter frame
2361 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
2362 __ leave(); // remove frame anchor
2363 __ pop(retaddr); // get return address
2364 __ mov(rsp, sender_sp); // set sp to sender sp
2365 // Ensure compiled code always sees stack at proper alignment
2366 __ andptr(rsp, -(StackAlignmentInBytes));
2367
2368 // unlike x86 we need no specialized return from compiled code
2369 // to the interpreter or the call stub.
2370
2371 // push the return address
2372 __ push(retaddr);
2373
2374 // and begin the OSR nmethod
2375 __ jmp(Address(rbx, nmethod::osr_entry_point_offset()));
2376 }
2377 }
2378 }
2379
2380 void TemplateTable::if_0cmp(Condition cc) {
2381 transition(itos, vtos);
2382 // assume branch is more often taken than not (loops use backward branches)
2383 Label not_taken;
2384 __ testl(rax, rax);
2385 __ jcc(j_not(cc), not_taken);
2386 branch(false, false);
2387 __ bind(not_taken);
2388 __ profile_not_taken_branch(rax);
2389 }
2390
2391 void TemplateTable::if_icmp(Condition cc) {
2392 transition(itos, vtos);
2393 // assume branch is more often taken than not (loops use backward branches)
2394 Label not_taken;
2395 __ pop_i(rdx);
2396 __ cmpl(rdx, rax);
2397 __ jcc(j_not(cc), not_taken);
2398 branch(false, false);
2399 __ bind(not_taken);
2400 __ profile_not_taken_branch(rax);
2401 }
2402
2403 void TemplateTable::if_nullcmp(Condition cc) {
2404 transition(atos, vtos);
2405 // assume branch is more often taken than not (loops use backward branches)
2406 Label not_taken;
2407 __ testptr(rax, rax);
2408 __ jcc(j_not(cc), not_taken);
2409 branch(false, false);
2410 __ bind(not_taken);
2411 __ profile_not_taken_branch(rax);
2412 }
2413
2414 void TemplateTable::if_acmp(Condition cc) {
2415 transition(atos, vtos);
2416 // assume branch is more often taken than not (loops use backward branches)
2417 Label taken, not_taken;
2418 __ pop_ptr(rdx);
2419
2420 __ profile_acmp(rbx, rdx, rax, rcx);
2421
2422 const int is_inline_type_mask = markWord::inline_type_pattern;
2423 if (EnableValhalla) {
2424 __ cmpoop(rdx, rax);
2425 __ jcc(Assembler::equal, (cc == equal) ? taken : not_taken);
2426
2427 // might be substitutable, test if either rax or rdx is null
2428 __ testptr(rax, rax);
2429 __ jcc(Assembler::zero, (cc == equal) ? not_taken : taken);
2430 __ testptr(rdx, rdx);
2431 __ jcc(Assembler::zero, (cc == equal) ? not_taken : taken);
2432
2433 // and both are values ?
2434 __ movptr(rbx, Address(rdx, oopDesc::mark_offset_in_bytes()));
2435 __ andptr(rbx, Address(rax, oopDesc::mark_offset_in_bytes()));
2436 __ andptr(rbx, is_inline_type_mask);
2437 __ cmpptr(rbx, is_inline_type_mask);
2438 __ jcc(Assembler::notEqual, (cc == equal) ? not_taken : taken);
2439
2440 // same value klass ?
2441 __ load_metadata(rbx, rdx);
2442 __ load_metadata(rcx, rax);
2443 __ cmpptr(rbx, rcx);
2444 __ jcc(Assembler::notEqual, (cc == equal) ? not_taken : taken);
2445
2446 // Know both are the same type, let's test for substitutability...
2447 if (cc == equal) {
2448 invoke_is_substitutable(rax, rdx, taken, not_taken);
2449 } else {
2450 invoke_is_substitutable(rax, rdx, not_taken, taken);
2451 }
2452 __ stop("Not reachable");
2453 }
2454
2455 __ cmpoop(rdx, rax);
2456 __ jcc(j_not(cc), not_taken);
2457 __ bind(taken);
2458 branch(false, false);
2459 __ bind(not_taken);
2460 __ profile_not_taken_branch(rax, true);
2461 }
2462
2463 void TemplateTable::invoke_is_substitutable(Register aobj, Register bobj,
2464 Label& is_subst, Label& not_subst) {
2465 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::is_substitutable), aobj, bobj);
2466 // Restored...rax answer, jmp to outcome...
2467 __ testl(rax, rax);
2468 __ jcc(Assembler::zero, not_subst);
2469 __ jmp(is_subst);
2470 }
2471
2472 void TemplateTable::ret() {
2473 transition(vtos, vtos);
2474 locals_index(rbx);
2475 LP64_ONLY(__ movslq(rbx, iaddress(rbx))); // get return bci, compute return bcp
2476 NOT_LP64(__ movptr(rbx, iaddress(rbx)));
2477 __ profile_ret(rbx, rcx);
2478 __ get_method(rax);
2479 __ movptr(rbcp, Address(rax, Method::const_offset()));
2480 __ lea(rbcp, Address(rbcp, rbx, Address::times_1,
2481 ConstMethod::codes_offset()));
2482 __ dispatch_next(vtos, 0, true);
2483 }
2484
2485 void TemplateTable::wide_ret() {
2486 transition(vtos, vtos);
2487 locals_index_wide(rbx);
2488 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp
2489 __ profile_ret(rbx, rcx);
2490 __ get_method(rax);
2491 __ movptr(rbcp, Address(rax, Method::const_offset()));
2492 __ lea(rbcp, Address(rbcp, rbx, Address::times_1, ConstMethod::codes_offset()));
2493 __ dispatch_next(vtos, 0, true);
2494 }
2495
2496 void TemplateTable::tableswitch() {
2497 Label default_case, continue_execution;
2498 transition(itos, vtos);
2499
2500 // align r13/rsi
2501 __ lea(rbx, at_bcp(BytesPerInt));
2502 __ andptr(rbx, -BytesPerInt);
2503 // load lo & hi
2504 __ movl(rcx, Address(rbx, BytesPerInt));
2505 __ movl(rdx, Address(rbx, 2 * BytesPerInt));
2506 __ bswapl(rcx);
2507 __ bswapl(rdx);
2508 // check against lo & hi
2509 __ cmpl(rax, rcx);
2510 __ jcc(Assembler::less, default_case);
2511 __ cmpl(rax, rdx);
2512 __ jcc(Assembler::greater, default_case);
2513 // lookup dispatch offset
2514 __ subl(rax, rcx);
2515 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt));
2516 __ profile_switch_case(rax, rbx, rcx);
2517 // continue execution
2518 __ bind(continue_execution);
2519 __ bswapl(rdx);
2520 LP64_ONLY(__ movl2ptr(rdx, rdx));
2521 __ load_unsigned_byte(rbx, Address(rbcp, rdx, Address::times_1));
2522 __ addptr(rbcp, rdx);
2523 __ dispatch_only(vtos, true);
2524 // handle default
2525 __ bind(default_case);
2526 __ profile_switch_default(rax);
2527 __ movl(rdx, Address(rbx, 0));
2528 __ jmp(continue_execution);
2529 }
2530
2531 void TemplateTable::lookupswitch() {
2532 transition(itos, itos);
2533 __ stop("lookupswitch bytecode should have been rewritten");
2534 }
2535
2536 void TemplateTable::fast_linearswitch() {
2537 transition(itos, vtos);
2538 Label loop_entry, loop, found, continue_execution;
2539 // bswap rax so we can avoid bswapping the table entries
2540 __ bswapl(rax);
2541 // align r13
2542 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of
2543 // this instruction (change offsets
2544 // below)
2545 __ andptr(rbx, -BytesPerInt);
2546 // set counter
2547 __ movl(rcx, Address(rbx, BytesPerInt));
2548 __ bswapl(rcx);
2549 __ jmpb(loop_entry);
2550 // table search
2551 __ bind(loop);
2552 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt));
2553 __ jcc(Assembler::equal, found);
2554 __ bind(loop_entry);
2555 __ decrementl(rcx);
2556 __ jcc(Assembler::greaterEqual, loop);
2557 // default case
2558 __ profile_switch_default(rax);
2559 __ movl(rdx, Address(rbx, 0));
2560 __ jmp(continue_execution);
2561 // entry found -> get offset
2562 __ bind(found);
2563 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt));
2564 __ profile_switch_case(rcx, rax, rbx);
2565 // continue execution
2566 __ bind(continue_execution);
2567 __ bswapl(rdx);
2568 __ movl2ptr(rdx, rdx);
2569 __ load_unsigned_byte(rbx, Address(rbcp, rdx, Address::times_1));
2570 __ addptr(rbcp, rdx);
2571 __ dispatch_only(vtos, true);
2572 }
2573
2574 void TemplateTable::fast_binaryswitch() {
2575 transition(itos, vtos);
2576 // Implementation using the following core algorithm:
2577 //
2578 // int binary_search(int key, LookupswitchPair* array, int n) {
2579 // // Binary search according to "Methodik des Programmierens" by
2580 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
2581 // int i = 0;
2582 // int j = n;
2583 // while (i+1 < j) {
2584 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
2585 // // with Q: for all i: 0 <= i < n: key < a[i]
2586 // // where a stands for the array and assuming that the (inexisting)
2587 // // element a[n] is infinitely big.
2588 // int h = (i + j) >> 1;
2589 // // i < h < j
2590 // if (key < array[h].fast_match()) {
2591 // j = h;
2592 // } else {
2593 // i = h;
2594 // }
2595 // }
2596 // // R: a[i] <= key < a[i+1] or Q
2597 // // (i.e., if key is within array, i is the correct index)
2598 // return i;
2599 // }
2600
2601 // Register allocation
2602 const Register key = rax; // already set (tosca)
2603 const Register array = rbx;
2604 const Register i = rcx;
2605 const Register j = rdx;
2606 const Register h = rdi;
2607 const Register temp = rsi;
2608
2609 // Find array start
2610 NOT_LP64(__ save_bcp());
2611
2612 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to
2613 // get rid of this
2614 // instruction (change
2615 // offsets below)
2616 __ andptr(array, -BytesPerInt);
2617
2618 // Initialize i & j
2619 __ xorl(i, i); // i = 0;
2620 __ movl(j, Address(array, -BytesPerInt)); // j = length(array);
2621
2622 // Convert j into native byteordering
2623 __ bswapl(j);
2624
2625 // And start
2626 Label entry;
2627 __ jmp(entry);
2628
2629 // binary search loop
2630 {
2631 Label loop;
2632 __ bind(loop);
2633 // int h = (i + j) >> 1;
2634 __ leal(h, Address(i, j, Address::times_1)); // h = i + j;
2635 __ sarl(h, 1); // h = (i + j) >> 1;
2636 // if (key < array[h].fast_match()) {
2637 // j = h;
2638 // } else {
2639 // i = h;
2640 // }
2641 // Convert array[h].match to native byte-ordering before compare
2642 __ movl(temp, Address(array, h, Address::times_8));
2643 __ bswapl(temp);
2644 __ cmpl(key, temp);
2645 // j = h if (key < array[h].fast_match())
2646 __ cmov32(Assembler::less, j, h);
2647 // i = h if (key >= array[h].fast_match())
2648 __ cmov32(Assembler::greaterEqual, i, h);
2649 // while (i+1 < j)
2650 __ bind(entry);
2651 __ leal(h, Address(i, 1)); // i+1
2652 __ cmpl(h, j); // i+1 < j
2653 __ jcc(Assembler::less, loop);
2654 }
2655
2656 // end of binary search, result index is i (must check again!)
2657 Label default_case;
2658 // Convert array[i].match to native byte-ordering before compare
2659 __ movl(temp, Address(array, i, Address::times_8));
2660 __ bswapl(temp);
2661 __ cmpl(key, temp);
2662 __ jcc(Assembler::notEqual, default_case);
2663
2664 // entry found -> j = offset
2665 __ movl(j , Address(array, i, Address::times_8, BytesPerInt));
2666 __ profile_switch_case(i, key, array);
2667 __ bswapl(j);
2668 LP64_ONLY(__ movslq(j, j));
2669
2670 NOT_LP64(__ restore_bcp());
2671 NOT_LP64(__ restore_locals()); // restore rdi
2672
2673 __ load_unsigned_byte(rbx, Address(rbcp, j, Address::times_1));
2674 __ addptr(rbcp, j);
2675 __ dispatch_only(vtos, true);
2676
2677 // default case -> j = default offset
2678 __ bind(default_case);
2679 __ profile_switch_default(i);
2680 __ movl(j, Address(array, -2 * BytesPerInt));
2681 __ bswapl(j);
2682 LP64_ONLY(__ movslq(j, j));
2683
2684 NOT_LP64(__ restore_bcp());
2685 NOT_LP64(__ restore_locals());
2686
2687 __ load_unsigned_byte(rbx, Address(rbcp, j, Address::times_1));
2688 __ addptr(rbcp, j);
2689 __ dispatch_only(vtos, true);
2690 }
2691
2692 void TemplateTable::_return(TosState state) {
2693 transition(state, state);
2694
2695 assert(_desc->calls_vm(),
2696 "inconsistent calls_vm information"); // call in remove_activation
2697
2698 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
2699 assert(state == vtos, "only valid state");
2700 Register robj = LP64_ONLY(c_rarg1) NOT_LP64(rax);
2701 __ movptr(robj, aaddress(0));
2702 __ load_klass(rdi, robj, rscratch1);
2703 __ testb(Address(rdi, Klass::misc_flags_offset()), KlassFlags::_misc_has_finalizer);
2704 Label skip_register_finalizer;
2705 __ jcc(Assembler::zero, skip_register_finalizer);
2706
2707 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), robj);
2708
2709 __ bind(skip_register_finalizer);
2710 }
2711
2712 if (_desc->bytecode() != Bytecodes::_return_register_finalizer) {
2713 Label no_safepoint;
2714 NOT_PRODUCT(__ block_comment("Thread-local Safepoint poll"));
2715 #ifdef _LP64
2716 __ testb(Address(r15_thread, JavaThread::polling_word_offset()), SafepointMechanism::poll_bit());
2717 #else
2718 const Register thread = rdi;
2719 __ get_thread(thread);
2720 __ testb(Address(thread, JavaThread::polling_word_offset()), SafepointMechanism::poll_bit());
2721 #endif
2722 __ jcc(Assembler::zero, no_safepoint);
2723 __ push(state);
2724 __ push_cont_fastpath();
2725 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
2726 InterpreterRuntime::at_safepoint));
2727 __ pop_cont_fastpath();
2728 __ pop(state);
2729 __ bind(no_safepoint);
2730 }
2731
2732 // Narrow result if state is itos but result type is smaller.
2733 // Need to narrow in the return bytecode rather than in generate_return_entry
2734 // since compiled code callers expect the result to already be narrowed.
2735 if (state == itos) {
2736 __ narrow(rax);
2737 }
2738
2739 __ remove_activation(state, rbcp, true, true, true);
2740
2741 __ jmp(rbcp);
2742 }
2743
2744 // ----------------------------------------------------------------------------
2745 // Volatile variables demand their effects be made known to all CPU's
2746 // in order. Store buffers on most chips allow reads & writes to
2747 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode
2748 // without some kind of memory barrier (i.e., it's not sufficient that
2749 // the interpreter does not reorder volatile references, the hardware
2750 // also must not reorder them).
2751 //
2752 // According to the new Java Memory Model (JMM):
2753 // (1) All volatiles are serialized wrt to each other. ALSO reads &
2754 // writes act as acquire & release, so:
2755 // (2) A read cannot let unrelated NON-volatile memory refs that
2756 // happen after the read float up to before the read. It's OK for
2757 // non-volatile memory refs that happen before the volatile read to
2758 // float down below it.
2759 // (3) Similar a volatile write cannot let unrelated NON-volatile
2760 // memory refs that happen BEFORE the write float down to after the
2761 // write. It's OK for non-volatile memory refs that happen after the
2762 // volatile write to float up before it.
2763 //
2764 // We only put in barriers around volatile refs (they are expensive),
2765 // not _between_ memory refs (that would require us to track the
2766 // flavor of the previous memory refs). Requirements (2) and (3)
2767 // require some barriers before volatile stores and after volatile
2768 // loads. These nearly cover requirement (1) but miss the
2769 // volatile-store-volatile-load case. This final case is placed after
2770 // volatile-stores although it could just as well go before
2771 // volatile-loads.
2772
2773 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) {
2774 // Helper function to insert a is-volatile test and memory barrier
2775 __ membar(order_constraint);
2776 }
2777
2778 void TemplateTable::resolve_cache_and_index_for_method(int byte_no,
2779 Register cache,
2780 Register index) {
2781 const Register temp = rbx;
2782 assert_different_registers(cache, index, temp);
2783
2784 Label L_clinit_barrier_slow;
2785 Label resolved;
2786
2787 Bytecodes::Code code = bytecode();
2788
2789 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
2790
2791 __ load_method_entry(cache, index);
2792 switch(byte_no) {
2793 case f1_byte:
2794 __ load_unsigned_byte(temp, Address(cache, in_bytes(ResolvedMethodEntry::bytecode1_offset())));
2795 break;
2796 case f2_byte:
2797 __ load_unsigned_byte(temp, Address(cache, in_bytes(ResolvedMethodEntry::bytecode2_offset())));
2798 break;
2799 default:
2800 ShouldNotReachHere();
2801 }
2802 __ cmpl(temp, code); // have we resolved this bytecode?
2803 __ jcc(Assembler::equal, resolved);
2804
2805 // resolve first time through
2806 // Class initialization barrier slow path lands here as well.
2807 __ bind(L_clinit_barrier_slow);
2808 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
2809 __ movl(temp, code);
2810 __ call_VM(noreg, entry, temp);
2811 // Update registers with resolved info
2812 __ load_method_entry(cache, index);
2813
2814 __ bind(resolved);
2815
2816 // Class initialization barrier for static methods
2817 if (VM_Version::supports_fast_class_init_checks() && bytecode() == Bytecodes::_invokestatic) {
2818 const Register method = temp;
2819 const Register klass = temp;
2820 const Register thread = LP64_ONLY(r15_thread) NOT_LP64(noreg);
2821 assert(thread != noreg, "x86_32 not supported");
2822
2823 __ movptr(method, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2824 __ load_method_holder(klass, method);
2825 __ clinit_barrier(klass, thread, nullptr /*L_fast_path*/, &L_clinit_barrier_slow);
2826 }
2827 }
2828
2829 void TemplateTable::resolve_cache_and_index_for_field(int byte_no,
2830 Register cache,
2831 Register index) {
2832 const Register temp = rbx;
2833 assert_different_registers(cache, index, temp);
2834
2835 Label resolved;
2836
2837 Bytecodes::Code code = bytecode();
2838 switch (code) {
2839 case Bytecodes::_nofast_getfield: code = Bytecodes::_getfield; break;
2840 case Bytecodes::_nofast_putfield: code = Bytecodes::_putfield; break;
2841 default: break;
2842 }
2843
2844 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
2845 __ load_field_entry(cache, index);
2846 if (byte_no == f1_byte) {
2847 __ load_unsigned_byte(temp, Address(cache, in_bytes(ResolvedFieldEntry::get_code_offset())));
2848 } else {
2849 __ load_unsigned_byte(temp, Address(cache, in_bytes(ResolvedFieldEntry::put_code_offset())));
2850 }
2851 __ cmpl(temp, code); // have we resolved this bytecode?
2852 __ jcc(Assembler::equal, resolved);
2853
2854 // resolve first time through
2855 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
2856 __ movl(temp, code);
2857 __ call_VM(noreg, entry, temp);
2858 // Update registers with resolved info
2859 __ load_field_entry(cache, index);
2860
2861 __ bind(resolved);
2862 }
2863
2864 void TemplateTable::load_resolved_field_entry(Register obj,
2865 Register cache,
2866 Register tos_state,
2867 Register offset,
2868 Register flags,
2869 bool is_static = false) {
2870 assert_different_registers(cache, tos_state, flags, offset);
2871
2872 // Field offset
2873 __ load_sized_value(offset, Address(cache, in_bytes(ResolvedFieldEntry::field_offset_offset())), sizeof(int), true /*is_signed*/);
2874
2875 // Flags
2876 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedFieldEntry::flags_offset())));
2877
2878 // TOS state
2879 __ load_unsigned_byte(tos_state, Address(cache, in_bytes(ResolvedFieldEntry::type_offset())));
2880
2881 // Klass overwrite register
2882 if (is_static) {
2883 __ movptr(obj, Address(cache, ResolvedFieldEntry::field_holder_offset()));
2884 const int mirror_offset = in_bytes(Klass::java_mirror_offset());
2885 __ movptr(obj, Address(obj, mirror_offset));
2886 __ resolve_oop_handle(obj, rscratch2);
2887 }
2888
2889 }
2890
2891 void TemplateTable::load_invokedynamic_entry(Register method) {
2892 // setup registers
2893 const Register appendix = rax;
2894 const Register cache = rcx;
2895 const Register index = rdx;
2896 assert_different_registers(method, appendix, cache, index);
2897
2898 __ save_bcp();
2899
2900 Label resolved;
2901
2902 __ load_resolved_indy_entry(cache, index);
2903 __ movptr(method, Address(cache, in_bytes(ResolvedIndyEntry::method_offset())));
2904
2905 // Compare the method to zero
2906 __ testptr(method, method);
2907 __ jcc(Assembler::notZero, resolved);
2908
2909 Bytecodes::Code code = bytecode();
2910
2911 // Call to the interpreter runtime to resolve invokedynamic
2912 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
2913 __ movl(method, code); // this is essentially Bytecodes::_invokedynamic
2914 __ call_VM(noreg, entry, method);
2915 // Update registers with resolved info
2916 __ load_resolved_indy_entry(cache, index);
2917 __ movptr(method, Address(cache, in_bytes(ResolvedIndyEntry::method_offset())));
2918
2919 #ifdef ASSERT
2920 __ testptr(method, method);
2921 __ jcc(Assembler::notZero, resolved);
2922 __ stop("Should be resolved by now");
2923 #endif // ASSERT
2924 __ bind(resolved);
2925
2926 Label L_no_push;
2927 // Check if there is an appendix
2928 __ load_unsigned_byte(index, Address(cache, in_bytes(ResolvedIndyEntry::flags_offset())));
2929 __ testl(index, (1 << ResolvedIndyEntry::has_appendix_shift));
2930 __ jcc(Assembler::zero, L_no_push);
2931
2932 // Get appendix
2933 __ load_unsigned_short(index, Address(cache, in_bytes(ResolvedIndyEntry::resolved_references_index_offset())));
2934 // Push the appendix as a trailing parameter
2935 // since the parameter_size includes it.
2936 __ load_resolved_reference_at_index(appendix, index);
2937 __ verify_oop(appendix);
2938 __ push(appendix); // push appendix (MethodType, CallSite, etc.)
2939 __ bind(L_no_push);
2940
2941 // compute return type
2942 __ load_unsigned_byte(index, Address(cache, in_bytes(ResolvedIndyEntry::result_type_offset())));
2943 // load return address
2944 {
2945 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
2946 ExternalAddress table(table_addr);
2947 #ifdef _LP64
2948 __ lea(rscratch1, table);
2949 __ movptr(index, Address(rscratch1, index, Address::times_ptr));
2950 #else
2951 __ movptr(index, ArrayAddress(table, Address(noreg, index, Address::times_ptr)));
2952 #endif // _LP64
2953 }
2954
2955 // push return address
2956 __ push(index);
2957 }
2958
2959 void TemplateTable::load_resolved_method_entry_special_or_static(Register cache,
2960 Register method,
2961 Register flags) {
2962 // setup registers
2963 const Register index = rdx;
2964 assert_different_registers(cache, index);
2965 assert_different_registers(method, cache, flags);
2966
2967 // determine constant pool cache field offsets
2968 resolve_cache_and_index_for_method(f1_byte, cache, index);
2969 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
2970 __ movptr(method, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
2971 }
2972
2973 void TemplateTable::load_resolved_method_entry_handle(Register cache,
2974 Register method,
2975 Register ref_index,
2976 Register flags) {
2977 // setup registers
2978 const Register index = rdx;
2979 assert_different_registers(cache, index);
2980 assert_different_registers(cache, method, ref_index, flags);
2981
2982 // determine constant pool cache field offsets
2983 resolve_cache_and_index_for_method(f1_byte, cache, index);
2984 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
2985
2986 // Maybe push appendix
2987 Label L_no_push;
2988 __ testl(flags, (1 << ResolvedMethodEntry::has_appendix_shift));
2989 __ jcc(Assembler::zero, L_no_push);
2990 // invokehandle uses an index into the resolved references array
2991 __ load_unsigned_short(ref_index, Address(cache, in_bytes(ResolvedMethodEntry::resolved_references_index_offset())));
2992 // Push the appendix as a trailing parameter.
2993 // This must be done before we get the receiver,
2994 // since the parameter_size includes it.
2995 Register appendix = method;
2996 __ load_resolved_reference_at_index(appendix, ref_index);
2997 __ push(appendix); // push appendix (MethodType, CallSite, etc.)
2998 __ bind(L_no_push);
2999
3000 __ movptr(method, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
3001 }
3002
3003 void TemplateTable::load_resolved_method_entry_interface(Register cache,
3004 Register klass,
3005 Register method_or_table_index,
3006 Register flags) {
3007 // setup registers
3008 const Register index = rdx;
3009 assert_different_registers(cache, klass, method_or_table_index, flags);
3010
3011 // determine constant pool cache field offsets
3012 resolve_cache_and_index_for_method(f1_byte, cache, index);
3013 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
3014
3015 // Invokeinterface can behave in different ways:
3016 // If calling a method from java.lang.Object, the forced virtual flag is true so the invocation will
3017 // behave like an invokevirtual call. The state of the virtual final flag will determine whether a method or
3018 // vtable index is placed in the register.
3019 // Otherwise, the registers will be populated with the klass and method.
3020
3021 Label NotVirtual; Label NotVFinal; Label Done;
3022 __ testl(flags, 1 << ResolvedMethodEntry::is_forced_virtual_shift);
3023 __ jcc(Assembler::zero, NotVirtual);
3024 __ testl(flags, (1 << ResolvedMethodEntry::is_vfinal_shift));
3025 __ jcc(Assembler::zero, NotVFinal);
3026 __ movptr(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
3027 __ jmp(Done);
3028
3029 __ bind(NotVFinal);
3030 __ load_unsigned_short(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::table_index_offset())));
3031 __ jmp(Done);
3032
3033 __ bind(NotVirtual);
3034 __ movptr(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
3035 __ movptr(klass, Address(cache, in_bytes(ResolvedMethodEntry::klass_offset())));
3036 __ bind(Done);
3037 }
3038
3039 void TemplateTable::load_resolved_method_entry_virtual(Register cache,
3040 Register method_or_table_index,
3041 Register flags) {
3042 // setup registers
3043 const Register index = rdx;
3044 assert_different_registers(index, cache);
3045 assert_different_registers(method_or_table_index, cache, flags);
3046
3047 // determine constant pool cache field offsets
3048 resolve_cache_and_index_for_method(f2_byte, cache, index);
3049 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::flags_offset())));
3050
3051 // method_or_table_index can either be an itable index or a method depending on the virtual final flag
3052 Label isVFinal; Label Done;
3053 __ testl(flags, (1 << ResolvedMethodEntry::is_vfinal_shift));
3054 __ jcc(Assembler::notZero, isVFinal);
3055 __ load_unsigned_short(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::table_index_offset())));
3056 __ jmp(Done);
3057 __ bind(isVFinal);
3058 __ movptr(method_or_table_index, Address(cache, in_bytes(ResolvedMethodEntry::method_offset())));
3059 __ bind(Done);
3060 }
3061
3062 // The registers cache and index expected to be set before call.
3063 // Correct values of the cache and index registers are preserved.
3064 void TemplateTable::jvmti_post_field_access(Register cache,
3065 Register index,
3066 bool is_static,
3067 bool has_tos) {
3068 if (JvmtiExport::can_post_field_access()) {
3069 // Check to see if a field access watch has been set before we take
3070 // the time to call into the VM.
3071 Label L1;
3072 assert_different_registers(cache, index, rax);
3073 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
3074 __ testl(rax,rax);
3075 __ jcc(Assembler::zero, L1);
3076
3077 // cache entry pointer
3078 __ load_field_entry(cache, index);
3079 if (is_static) {
3080 __ xorptr(rax, rax); // null object reference
3081 } else {
3082 __ pop(atos); // Get the object
3083 __ verify_oop(rax);
3084 __ push(atos); // Restore stack state
3085 }
3086 // rax,: object pointer or null
3087 // cache: cache entry pointer
3088 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
3089 rax, cache);
3090
3091 __ load_field_entry(cache, index);
3092 __ bind(L1);
3093 }
3094 }
3095
3096 void TemplateTable::pop_and_check_object(Register r) {
3097 __ pop_ptr(r);
3098 __ null_check(r); // for field access must check obj.
3099 __ verify_oop(r);
3100 }
3101
3102 void TemplateTable::getfield_or_static(int byte_no, bool is_static, RewriteControl rc) {
3103 transition(vtos, vtos);
3104
3105 const Register obj = LP64_ONLY(r9) NOT_LP64(rcx);
3106 const Register cache = rcx;
3107 const Register index = rdx;
3108 const Register off = rbx;
3109 const Register tos_state = rax;
3110 const Register flags = rdx;
3111 const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx); // uses same reg as obj, so don't mix them
3112
3113 resolve_cache_and_index_for_field(byte_no, cache, index);
3114 jvmti_post_field_access(cache, index, is_static, false);
3115 load_resolved_field_entry(obj, cache, tos_state, off, flags, is_static);
3116
3117 const Address field(obj, off, Address::times_1, 0*wordSize);
3118
3119 Label Done, notByte, notBool, notInt, notShort, notChar, notLong, notFloat, notObj, notInlineType;
3120
3121 // Make sure we don't need to mask edx after the above shift
3122 assert(btos == 0, "change code, btos != 0");
3123 __ testl(tos_state, tos_state);
3124 __ jcc(Assembler::notZero, notByte);
3125
3126 // btos
3127 if (!is_static) pop_and_check_object(obj);
3128 __ access_load_at(T_BYTE, IN_HEAP, rax, field, noreg, noreg);
3129 __ push(btos);
3130 // Rewrite bytecode to be faster
3131 if (!is_static && rc == may_rewrite) {
3132 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx);
3133 }
3134 __ jmp(Done);
3135
3136 __ bind(notByte);
3137 __ cmpl(tos_state, ztos);
3138 __ jcc(Assembler::notEqual, notBool);
3139 if (!is_static) pop_and_check_object(obj);
3140 // ztos (same code as btos)
3141 __ access_load_at(T_BOOLEAN, IN_HEAP, rax, field, noreg, noreg);
3142 __ push(ztos);
3143 // Rewrite bytecode to be faster
3144 if (!is_static && rc == may_rewrite) {
3145 // use btos rewriting, no truncating to t/f bit is needed for getfield.
3146 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx);
3147 }
3148 __ jmp(Done);
3149
3150 __ bind(notBool);
3151 __ cmpl(tos_state, atos);
3152 __ jcc(Assembler::notEqual, notObj);
3153 // atos
3154 if (!EnableValhalla) {
3155 if (!is_static) pop_and_check_object(obj);
3156 do_oop_load(_masm, field, rax);
3157 __ push(atos);
3158 if (!is_static && rc == may_rewrite) {
3159 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx);
3160 }
3161 __ jmp(Done);
3162 } else {
3163 if (is_static) {
3164 __ load_heap_oop(rax, field);
3165 Label is_null_free_inline_type, uninitialized;
3166 // Issue below if the static field has not been initialized yet
3167 __ test_field_is_null_free_inline_type(flags, rscratch1, is_null_free_inline_type);
3168 // field is not a null free inline type
3169 __ push(atos);
3170 __ jmp(Done);
3171 // field is a null free inline type, must not return null even if uninitialized
3172 __ bind(is_null_free_inline_type);
3173 __ testptr(rax, rax);
3174 __ jcc(Assembler::zero, uninitialized);
3175 __ push(atos);
3176 __ jmp(Done);
3177 __ bind(uninitialized);
3178 #ifdef _LP64
3179 Label slow_case, finish;
3180 __ movptr(rbx, Address(obj, java_lang_Class::klass_offset()));
3181 __ cmpb(Address(rbx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized);
3182 __ jcc(Assembler::notEqual, slow_case);
3183 __ get_default_value_oop(rbx, rscratch1, rax);
3184 __ jmp(finish);
3185 __ bind(slow_case);
3186 #endif // LP64
3187 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::uninitialized_static_inline_type_field),
3188 obj, cache);
3189 #ifdef _LP64
3190 __ bind(finish);
3191 #endif // _LP64
3192 __ verify_oop(rax);
3193 __ push(atos);
3194 __ jmp(Done);
3195 } else {
3196 Label is_flat, nonnull, is_inline_type, rewrite_inline, has_null_marker;
3197 __ test_field_is_null_free_inline_type(flags, rscratch1, is_inline_type);
3198 __ test_field_has_null_marker(flags, rscratch1, has_null_marker);
3199 // field is not a null free inline type
3200 pop_and_check_object(obj);
3201 __ load_heap_oop(rax, field);
3202 __ push(atos);
3203 if (rc == may_rewrite) {
3204 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx);
3205 }
3206 __ jmp(Done);
3207 __ bind(is_inline_type);
3208 __ test_field_is_flat(flags, rscratch1, is_flat);
3209 // field is not flat
3210 pop_and_check_object(obj);
3211 __ load_heap_oop(rax, field);
3212 __ testptr(rax, rax);
3213 __ jcc(Assembler::notZero, nonnull);
3214 __ load_unsigned_short(flags, Address(cache, in_bytes(ResolvedFieldEntry::field_index_offset())));
3215 __ movptr(rcx, Address(cache, ResolvedFieldEntry::field_holder_offset()));
3216 __ get_inline_type_field_klass(rcx, flags, rbx);
3217 __ get_default_value_oop(rbx, rcx, rax);
3218 __ bind(nonnull);
3219 __ verify_oop(rax);
3220 __ push(atos);
3221 __ jmp(rewrite_inline);
3222 __ bind(is_flat);
3223 pop_and_check_object(rax);
3224 __ read_flat_field(rcx, rdx, rbx, rax);
3225 __ verify_oop(rax);
3226 __ push(atos);
3227 __ jmp(rewrite_inline);
3228 __ bind(has_null_marker);
3229 pop_and_check_object(rax);
3230 __ load_field_entry(rcx, rbx);
3231 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::read_nullable_flat_field), rax, rcx);
3232 __ get_vm_result(rax, r15_thread);
3233 __ push(atos);
3234 __ bind(rewrite_inline);
3235 if (rc == may_rewrite) {
3236 patch_bytecode(Bytecodes::_fast_vgetfield, bc, rbx);
3237 }
3238 __ jmp(Done);
3239 }
3240 }
3241
3242 __ bind(notObj);
3243
3244 if (!is_static) pop_and_check_object(obj);
3245
3246 __ cmpl(tos_state, itos);
3247 __ jcc(Assembler::notEqual, notInt);
3248 // itos
3249 __ access_load_at(T_INT, IN_HEAP, rax, field, noreg, noreg);
3250 __ push(itos);
3251 // Rewrite bytecode to be faster
3252 if (!is_static && rc == may_rewrite) {
3253 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx);
3254 }
3255 __ jmp(Done);
3256
3257 __ bind(notInt);
3258 __ cmpl(tos_state, ctos);
3259 __ jcc(Assembler::notEqual, notChar);
3260 // ctos
3261 __ access_load_at(T_CHAR, IN_HEAP, rax, field, noreg, noreg);
3262 __ push(ctos);
3263 // Rewrite bytecode to be faster
3264 if (!is_static && rc == may_rewrite) {
3265 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx);
3266 }
3267 __ jmp(Done);
3268
3269 __ bind(notChar);
3270 __ cmpl(tos_state, stos);
3271 __ jcc(Assembler::notEqual, notShort);
3272 // stos
3273 __ access_load_at(T_SHORT, IN_HEAP, rax, field, noreg, noreg);
3274 __ push(stos);
3275 // Rewrite bytecode to be faster
3276 if (!is_static && rc == may_rewrite) {
3277 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx);
3278 }
3279 __ jmp(Done);
3280
3281 __ bind(notShort);
3282 __ cmpl(tos_state, ltos);
3283 __ jcc(Assembler::notEqual, notLong);
3284 // ltos
3285 // Generate code as if volatile (x86_32). There just aren't enough registers to
3286 // save that information and this code is faster than the test.
3287 __ access_load_at(T_LONG, IN_HEAP | MO_RELAXED, noreg /* ltos */, field, noreg, noreg);
3288 __ push(ltos);
3289 // Rewrite bytecode to be faster
3290 LP64_ONLY(if (!is_static && rc == may_rewrite) patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx));
3291 __ jmp(Done);
3292
3293 __ bind(notLong);
3294 __ cmpl(tos_state, ftos);
3295 __ jcc(Assembler::notEqual, notFloat);
3296 // ftos
3297
3298 __ access_load_at(T_FLOAT, IN_HEAP, noreg /* ftos */, field, noreg, noreg);
3299 __ push(ftos);
3300 // Rewrite bytecode to be faster
3301 if (!is_static && rc == may_rewrite) {
3302 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx);
3303 }
3304 __ jmp(Done);
3305
3306 __ bind(notFloat);
3307 #ifdef ASSERT
3308 Label notDouble;
3309 __ cmpl(tos_state, dtos);
3310 __ jcc(Assembler::notEqual, notDouble);
3311 #endif
3312 // dtos
3313 // MO_RELAXED: for the case of volatile field, in fact it adds no extra work for the underlying implementation
3314 __ access_load_at(T_DOUBLE, IN_HEAP | MO_RELAXED, noreg /* dtos */, field, noreg, noreg);
3315 __ push(dtos);
3316 // Rewrite bytecode to be faster
3317 if (!is_static && rc == may_rewrite) {
3318 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx);
3319 }
3320 #ifdef ASSERT
3321 __ jmp(Done);
3322
3323 __ bind(notDouble);
3324 __ stop("Bad state");
3325 #endif
3326
3327 __ bind(Done);
3328 // [jk] not needed currently
3329 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad |
3330 // Assembler::LoadStore));
3331 }
3332
3333 void TemplateTable::getfield(int byte_no) {
3334 getfield_or_static(byte_no, false);
3335 }
3336
3337 void TemplateTable::nofast_getfield(int byte_no) {
3338 getfield_or_static(byte_no, false, may_not_rewrite);
3339 }
3340
3341 void TemplateTable::getstatic(int byte_no) {
3342 getfield_or_static(byte_no, true);
3343 }
3344
3345 // The registers cache and index expected to be set before call.
3346 // The function may destroy various registers, just not the cache and index registers.
3347 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) {
3348 // Cache is rcx and index is rdx
3349 const Register entry = LP64_ONLY(c_rarg2) NOT_LP64(rax); // ResolvedFieldEntry
3350 const Register obj = LP64_ONLY(c_rarg1) NOT_LP64(rbx); // Object pointer
3351 const Register value = LP64_ONLY(c_rarg3) NOT_LP64(rcx); // JValue object
3352
3353 if (JvmtiExport::can_post_field_modification()) {
3354 // Check to see if a field modification watch has been set before
3355 // we take the time to call into the VM.
3356 Label L1;
3357 assert_different_registers(cache, obj, rax);
3358 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
3359 __ testl(rax, rax);
3360 __ jcc(Assembler::zero, L1);
3361
3362 __ mov(entry, cache);
3363
3364 if (is_static) {
3365 // Life is simple. Null out the object pointer.
3366 __ xorl(obj, obj);
3367
3368 } else {
3369 // Life is harder. The stack holds the value on top, followed by
3370 // the object. We don't know the size of the value, though; it
3371 // could be one or two words depending on its type. As a result,
3372 // we must find the type to determine where the object is.
3373 #ifndef _LP64
3374 Label two_word, valsize_known;
3375 #endif
3376 __ load_unsigned_byte(value, Address(entry, in_bytes(ResolvedFieldEntry::type_offset())));
3377 #ifdef _LP64
3378 __ movptr(obj, at_tos_p1()); // initially assume a one word jvalue
3379 __ cmpl(value, ltos);
3380 __ cmovptr(Assembler::equal,
3381 obj, at_tos_p2()); // ltos (two word jvalue)
3382 __ cmpl(value, dtos);
3383 __ cmovptr(Assembler::equal,
3384 obj, at_tos_p2()); // dtos (two word jvalue)
3385 #else
3386 __ mov(obj, rsp);
3387 __ cmpl(value, ltos);
3388 __ jccb(Assembler::equal, two_word);
3389 __ cmpl(value, dtos);
3390 __ jccb(Assembler::equal, two_word);
3391 __ addptr(obj, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos)
3392 __ jmpb(valsize_known);
3393
3394 __ bind(two_word);
3395 __ addptr(obj, Interpreter::expr_offset_in_bytes(2)); // two words jvalue
3396
3397 __ bind(valsize_known);
3398 // setup object pointer
3399 __ movptr(obj, Address(obj, 0));
3400 #endif
3401 }
3402
3403 // object (tos)
3404 __ mov(value, rsp);
3405 // obj: object pointer set up above (null if static)
3406 // cache: field entry pointer
3407 // value: jvalue object on the stack
3408 __ call_VM(noreg,
3409 CAST_FROM_FN_PTR(address,
3410 InterpreterRuntime::post_field_modification),
3411 obj, entry, value);
3412 // Reload field entry
3413 __ load_field_entry(cache, index);
3414 __ bind(L1);
3415 }
3416 }
3417
3418 void TemplateTable::putfield_or_static(int byte_no, bool is_static, RewriteControl rc) {
3419 transition(vtos, vtos);
3420
3421 const Register obj = rcx;
3422 const Register cache = rcx;
3423 const Register index = rdx;
3424 const Register tos_state = rdx;
3425 const Register off = rbx;
3426 const Register flags = r9;
3427
3428 resolve_cache_and_index_for_field(byte_no, cache, index);
3429 jvmti_post_field_mod(cache, index, is_static);
3430 load_resolved_field_entry(obj, cache, tos_state, off, flags, is_static);
3431
3432 // [jk] not needed currently
3433 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore |
3434 // Assembler::StoreStore));
3435
3436 Label notVolatile, Done;
3437
3438 // Check for volatile store
3439 __ movl(rscratch1, flags);
3440 __ andl(rscratch1, (1 << ResolvedFieldEntry::is_volatile_shift));
3441 __ testl(rscratch1, rscratch1);
3442 __ jcc(Assembler::zero, notVolatile);
3443
3444 putfield_or_static_helper(byte_no, is_static, rc, obj, off, tos_state, flags);
3445 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
3446 Assembler::StoreStore));
3447 __ jmp(Done);
3448 __ bind(notVolatile);
3449
3450 putfield_or_static_helper(byte_no, is_static, rc, obj, off, tos_state, flags);
3451
3452 __ bind(Done);
3453 }
3454
3455 void TemplateTable::putfield_or_static_helper(int byte_no, bool is_static, RewriteControl rc,
3456 Register obj, Register off, Register tos_state, Register flags) {
3457
3458 // field addresses
3459 const Address field(obj, off, Address::times_1, 0*wordSize);
3460 NOT_LP64( const Address hi(obj, off, Address::times_1, 1*wordSize);)
3461
3462 Label notByte, notBool, notInt, notShort, notChar,
3463 notLong, notFloat, notObj, notInlineType;
3464 Label Done;
3465
3466 const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
3467
3468 // Test TOS state
3469 __ testl(tos_state, tos_state);
3470 __ jcc(Assembler::notZero, notByte);
3471
3472 // btos
3473 {
3474 __ pop(btos);
3475 if (!is_static) pop_and_check_object(obj);
3476 __ access_store_at(T_BYTE, IN_HEAP, field, rax, noreg, noreg, noreg);
3477 if (!is_static && rc == may_rewrite) {
3478 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx, true, byte_no);
3479 }
3480 __ jmp(Done);
3481 }
3482
3483 __ bind(notByte);
3484 __ cmpl(tos_state, ztos);
3485 __ jcc(Assembler::notEqual, notBool);
3486
3487 // ztos
3488 {
3489 __ pop(ztos);
3490 if (!is_static) pop_and_check_object(obj);
3491 __ access_store_at(T_BOOLEAN, IN_HEAP, field, rax, noreg, noreg, noreg);
3492 if (!is_static && rc == may_rewrite) {
3493 patch_bytecode(Bytecodes::_fast_zputfield, bc, rbx, true, byte_no);
3494 }
3495 __ jmp(Done);
3496 }
3497
3498 __ bind(notBool);
3499 __ cmpl(tos_state, atos);
3500 __ jcc(Assembler::notEqual, notObj);
3501
3502 // atos
3503 {
3504 if (!EnableValhalla) {
3505 __ pop(atos);
3506 if (!is_static) pop_and_check_object(obj);
3507 // Store into the field
3508 do_oop_store(_masm, field, rax);
3509 if (!is_static && rc == may_rewrite) {
3510 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx, true, byte_no);
3511 }
3512 __ jmp(Done);
3513 } else {
3514 __ pop(atos);
3515 if (is_static) {
3516 Label is_inline_type;
3517 __ test_field_is_not_null_free_inline_type(flags, rscratch1, is_inline_type);
3518 __ null_check(rax);
3519 __ bind(is_inline_type);
3520 do_oop_store(_masm, field, rax);
3521 __ jmp(Done);
3522 } else {
3523 Label is_null_free_inline_type, is_flat, has_null_marker,
3524 write_null, rewrite_not_inline, rewrite_inline;
3525 __ test_field_is_null_free_inline_type(flags, rscratch1, is_null_free_inline_type);
3526 __ test_field_has_null_marker(flags, rscratch1, has_null_marker);
3527 // Not an inline type
3528 pop_and_check_object(obj);
3529 // Store into the field
3530 do_oop_store(_masm, field, rax);
3531 __ bind(rewrite_not_inline);
3532 if (rc == may_rewrite) {
3533 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx, true, byte_no);
3534 }
3535 __ jmp(Done);
3536 // Implementation of the inline type semantic
3537 __ bind(is_null_free_inline_type);
3538 __ null_check(rax);
3539 __ test_field_is_flat(flags, rscratch1, is_flat);
3540 // field is not flat
3541 pop_and_check_object(obj);
3542 // Store into the field
3543 do_oop_store(_masm, field, rax);
3544 __ jmp(rewrite_inline);
3545 __ bind(is_flat);
3546 // field is flat
3547 __ load_unsigned_short(rdx, Address(rcx, in_bytes(ResolvedFieldEntry::field_index_offset())));
3548 __ movptr(r9, Address(rcx, in_bytes(ResolvedFieldEntry::field_holder_offset())));
3549 pop_and_check_object(obj); // obj = rcx
3550 __ load_klass(r8, rax, rscratch1);
3551 __ data_for_oop(rax, rax, r8);
3552 __ addptr(obj, off);
3553 __ inline_layout_info(r9, rdx, rbx);
3554 // because we use InlineLayoutInfo, we need special value access code specialized for fields (arrays will need a different API)
3555 __ flat_field_copy(IN_HEAP, rax, obj, rbx);
3556 __ jmp(rewrite_inline);
3557 __ bind(has_null_marker); // has null marker means the field is flat with a null marker
3558 pop_and_check_object(rbx);
3559 __ load_field_entry(rcx, rdx);
3560 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::write_nullable_flat_field), rbx, rax, rcx);
3561 __ bind(rewrite_inline);
3562 if (rc == may_rewrite) {
3563 patch_bytecode(Bytecodes::_fast_vputfield, bc, rbx, true, byte_no);
3564 }
3565 __ jmp(Done);
3566 }
3567 }
3568 }
3569
3570 __ bind(notObj);
3571 __ cmpl(tos_state, itos);
3572 __ jcc(Assembler::notEqual, notInt);
3573
3574 // itos
3575 {
3576 __ pop(itos);
3577 if (!is_static) pop_and_check_object(obj);
3578 __ access_store_at(T_INT, IN_HEAP, field, rax, noreg, noreg, noreg);
3579 if (!is_static && rc == may_rewrite) {
3580 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx, true, byte_no);
3581 }
3582 __ jmp(Done);
3583 }
3584
3585 __ bind(notInt);
3586 __ cmpl(tos_state, ctos);
3587 __ jcc(Assembler::notEqual, notChar);
3588
3589 // ctos
3590 {
3591 __ pop(ctos);
3592 if (!is_static) pop_and_check_object(obj);
3593 __ access_store_at(T_CHAR, IN_HEAP, field, rax, noreg, noreg, noreg);
3594 if (!is_static && rc == may_rewrite) {
3595 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx, true, byte_no);
3596 }
3597 __ jmp(Done);
3598 }
3599
3600 __ bind(notChar);
3601 __ cmpl(tos_state, stos);
3602 __ jcc(Assembler::notEqual, notShort);
3603
3604 // stos
3605 {
3606 __ pop(stos);
3607 if (!is_static) pop_and_check_object(obj);
3608 __ access_store_at(T_SHORT, IN_HEAP, field, rax, noreg, noreg, noreg);
3609 if (!is_static && rc == may_rewrite) {
3610 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx, true, byte_no);
3611 }
3612 __ jmp(Done);
3613 }
3614
3615 __ bind(notShort);
3616 __ cmpl(tos_state, ltos);
3617 __ jcc(Assembler::notEqual, notLong);
3618
3619 // ltos
3620 {
3621 __ pop(ltos);
3622 if (!is_static) pop_and_check_object(obj);
3623 // MO_RELAXED: generate atomic store for the case of volatile field (important for x86_32)
3624 __ access_store_at(T_LONG, IN_HEAP | MO_RELAXED, field, noreg /* ltos*/, noreg, noreg, noreg);
3625 #ifdef _LP64
3626 if (!is_static && rc == may_rewrite) {
3627 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx, true, byte_no);
3628 }
3629 #endif // _LP64
3630 __ jmp(Done);
3631 }
3632
3633 __ bind(notLong);
3634 __ cmpl(tos_state, ftos);
3635 __ jcc(Assembler::notEqual, notFloat);
3636
3637 // ftos
3638 {
3639 __ pop(ftos);
3640 if (!is_static) pop_and_check_object(obj);
3641 __ access_store_at(T_FLOAT, IN_HEAP, field, noreg /* ftos */, noreg, noreg, noreg);
3642 if (!is_static && rc == may_rewrite) {
3643 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx, true, byte_no);
3644 }
3645 __ jmp(Done);
3646 }
3647
3648 __ bind(notFloat);
3649 #ifdef ASSERT
3650 Label notDouble;
3651 __ cmpl(tos_state, dtos);
3652 __ jcc(Assembler::notEqual, notDouble);
3653 #endif
3654
3655 // dtos
3656 {
3657 __ pop(dtos);
3658 if (!is_static) pop_and_check_object(obj);
3659 // MO_RELAXED: for the case of volatile field, in fact it adds no extra work for the underlying implementation
3660 __ access_store_at(T_DOUBLE, IN_HEAP | MO_RELAXED, field, noreg /* dtos */, noreg, noreg, noreg);
3661 if (!is_static && rc == may_rewrite) {
3662 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx, true, byte_no);
3663 }
3664 }
3665
3666 #ifdef ASSERT
3667 __ jmp(Done);
3668
3669 __ bind(notDouble);
3670 __ stop("Bad state");
3671 #endif
3672
3673 __ bind(Done);
3674 }
3675
3676 void TemplateTable::putfield(int byte_no) {
3677 putfield_or_static(byte_no, false);
3678 }
3679
3680 void TemplateTable::nofast_putfield(int byte_no) {
3681 putfield_or_static(byte_no, false, may_not_rewrite);
3682 }
3683
3684 void TemplateTable::putstatic(int byte_no) {
3685 putfield_or_static(byte_no, true);
3686 }
3687
3688 void TemplateTable::jvmti_post_fast_field_mod() {
3689
3690 const Register scratch = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
3691
3692 if (JvmtiExport::can_post_field_modification()) {
3693 // Check to see if a field modification watch has been set before
3694 // we take the time to call into the VM.
3695 Label L2;
3696 __ mov32(scratch, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
3697 __ testl(scratch, scratch);
3698 __ jcc(Assembler::zero, L2);
3699 __ pop_ptr(rbx); // copy the object pointer from tos
3700 __ verify_oop(rbx);
3701 __ push_ptr(rbx); // put the object pointer back on tos
3702 // Save tos values before call_VM() clobbers them. Since we have
3703 // to do it for every data type, we use the saved values as the
3704 // jvalue object.
3705 switch (bytecode()) { // load values into the jvalue object
3706 case Bytecodes::_fast_vputfield: //fall through
3707 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break;
3708 case Bytecodes::_fast_bputfield: // fall through
3709 case Bytecodes::_fast_zputfield: // fall through
3710 case Bytecodes::_fast_sputfield: // fall through
3711 case Bytecodes::_fast_cputfield: // fall through
3712 case Bytecodes::_fast_iputfield: __ push_i(rax); break;
3713 case Bytecodes::_fast_dputfield: __ push(dtos); break;
3714 case Bytecodes::_fast_fputfield: __ push(ftos); break;
3715 case Bytecodes::_fast_lputfield: __ push_l(rax); break;
3716
3717 default:
3718 ShouldNotReachHere();
3719 }
3720 __ mov(scratch, rsp); // points to jvalue on the stack
3721 // access constant pool cache entry
3722 LP64_ONLY(__ load_field_entry(c_rarg2, rax));
3723 NOT_LP64(__ load_field_entry(rax, rdx));
3724 __ verify_oop(rbx);
3725 // rbx: object pointer copied above
3726 // c_rarg2: cache entry pointer
3727 // c_rarg3: jvalue object on the stack
3728 LP64_ONLY(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, c_rarg2, c_rarg3));
3729 NOT_LP64(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx));
3730
3731 switch (bytecode()) { // restore tos values
3732 case Bytecodes::_fast_vputfield: // fall through
3733 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break;
3734 case Bytecodes::_fast_bputfield: // fall through
3735 case Bytecodes::_fast_zputfield: // fall through
3736 case Bytecodes::_fast_sputfield: // fall through
3737 case Bytecodes::_fast_cputfield: // fall through
3738 case Bytecodes::_fast_iputfield: __ pop_i(rax); break;
3739 case Bytecodes::_fast_dputfield: __ pop(dtos); break;
3740 case Bytecodes::_fast_fputfield: __ pop(ftos); break;
3741 case Bytecodes::_fast_lputfield: __ pop_l(rax); break;
3742 default: break;
3743 }
3744 __ bind(L2);
3745 }
3746 }
3747
3748 void TemplateTable::fast_storefield(TosState state) {
3749 transition(state, vtos);
3750
3751 Label notVolatile, Done;
3752
3753 jvmti_post_fast_field_mod();
3754
3755 __ push(rax);
3756 __ load_field_entry(rcx, rax);
3757 load_resolved_field_entry(noreg, rcx, rax, rbx, rdx);
3758 __ pop(rax);
3759 // RBX: field offset, RCX: RAX: TOS, RDX: flags
3760
3761 // Get object from stack
3762 pop_and_check_object(rcx);
3763
3764 // field address
3765 const Address field(rcx, rbx, Address::times_1);
3766
3767 // Check for volatile store
3768 __ movl(rscratch2, rdx); // saving flags for is_flat test
3769 __ andl(rscratch2, (1 << ResolvedFieldEntry::is_volatile_shift));
3770 __ testl(rscratch2, rscratch2);
3771 __ jcc(Assembler::zero, notVolatile);
3772
3773 fast_storefield_helper(field, rax, rdx);
3774 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
3775 Assembler::StoreStore));
3776 __ jmp(Done);
3777 __ bind(notVolatile);
3778
3779 fast_storefield_helper(field, rax, rdx);
3780
3781 __ bind(Done);
3782 }
3783
3784 void TemplateTable::fast_storefield_helper(Address field, Register rax, Register flags) {
3785
3786 // DANGER: 'field' argument depends on rcx and rbx
3787
3788 // access field
3789 switch (bytecode()) {
3790 case Bytecodes::_fast_vputfield:
3791 {
3792 Label is_flat, has_null_marker, write_null, done;
3793 __ test_field_has_null_marker(flags, rscratch1, has_null_marker);
3794 // Null free field cases: flat or not flat
3795 __ null_check(rax);
3796 __ test_field_is_flat(flags, rscratch1, is_flat);
3797 // field is not flat
3798 do_oop_store(_masm, field, rax);
3799 __ jmp(done);
3800 __ bind(is_flat);
3801 __ load_field_entry(r8, r9);
3802 __ load_unsigned_short(r9, Address(r8, in_bytes(ResolvedFieldEntry::field_index_offset())));
3803 __ movptr(r8, Address(r8, in_bytes(ResolvedFieldEntry::field_holder_offset())));
3804 __ inline_layout_info(r8, r9, r8);
3805 __ load_klass(rdx, rax, rscratch1);
3806 __ data_for_oop(rax, rax, rdx);
3807 __ lea(rcx, field);
3808 __ flat_field_copy(IN_HEAP, rax, rcx, r8);
3809 __ jmp(done);
3810 __ bind(has_null_marker); // has null marker means the field is flat with a null marker
3811 __ movptr(rbx, rcx);
3812 __ load_field_entry(rcx, rdx);
3813 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::write_nullable_flat_field), rbx, rax, rcx);
3814 __ bind(done);
3815 }
3816 break;
3817 case Bytecodes::_fast_aputfield:
3818 {
3819 do_oop_store(_masm, field, rax);
3820 }
3821 break;
3822 case Bytecodes::_fast_lputfield:
3823 #ifdef _LP64
3824 __ access_store_at(T_LONG, IN_HEAP, field, noreg /* ltos */, noreg, noreg, noreg);
3825 #else
3826 __ stop("should not be rewritten");
3827 #endif
3828 break;
3829 case Bytecodes::_fast_iputfield:
3830 __ access_store_at(T_INT, IN_HEAP, field, rax, noreg, noreg, noreg);
3831 break;
3832 case Bytecodes::_fast_zputfield:
3833 __ access_store_at(T_BOOLEAN, IN_HEAP, field, rax, noreg, noreg, noreg);
3834 break;
3835 case Bytecodes::_fast_bputfield:
3836 __ access_store_at(T_BYTE, IN_HEAP, field, rax, noreg, noreg, noreg);
3837 break;
3838 case Bytecodes::_fast_sputfield:
3839 __ access_store_at(T_SHORT, IN_HEAP, field, rax, noreg, noreg, noreg);
3840 break;
3841 case Bytecodes::_fast_cputfield:
3842 __ access_store_at(T_CHAR, IN_HEAP, field, rax, noreg, noreg, noreg);
3843 break;
3844 case Bytecodes::_fast_fputfield:
3845 __ access_store_at(T_FLOAT, IN_HEAP, field, noreg /* ftos*/, noreg, noreg, noreg);
3846 break;
3847 case Bytecodes::_fast_dputfield:
3848 __ access_store_at(T_DOUBLE, IN_HEAP, field, noreg /* dtos*/, noreg, noreg, noreg);
3849 break;
3850 default:
3851 ShouldNotReachHere();
3852 }
3853 }
3854
3855 void TemplateTable::fast_accessfield(TosState state) {
3856 transition(atos, state);
3857
3858 // Do the JVMTI work here to avoid disturbing the register state below
3859 if (JvmtiExport::can_post_field_access()) {
3860 // Check to see if a field access watch has been set before we
3861 // take the time to call into the VM.
3862 Label L1;
3863 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
3864 __ testl(rcx, rcx);
3865 __ jcc(Assembler::zero, L1);
3866 // access constant pool cache entry
3867 LP64_ONLY(__ load_field_entry(c_rarg2, rcx));
3868 NOT_LP64(__ load_field_entry(rcx, rdx));
3869 __ verify_oop(rax);
3870 __ push_ptr(rax); // save object pointer before call_VM() clobbers it
3871 LP64_ONLY(__ mov(c_rarg1, rax));
3872 // c_rarg1: object pointer copied above
3873 // c_rarg2: cache entry pointer
3874 LP64_ONLY(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), c_rarg1, c_rarg2));
3875 NOT_LP64(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx));
3876 __ pop_ptr(rax); // restore object pointer
3877 __ bind(L1);
3878 }
3879
3880 // access constant pool cache
3881 __ load_field_entry(rcx, rbx);
3882 __ load_sized_value(rdx, Address(rcx, in_bytes(ResolvedFieldEntry::field_offset_offset())), sizeof(int), true /*is_signed*/);
3883
3884 // rax: object
3885 __ verify_oop(rax);
3886 __ null_check(rax);
3887 Address field(rax, rdx, Address::times_1);
3888
3889 // access field
3890 switch (bytecode()) {
3891 case Bytecodes::_fast_vgetfield:
3892 {
3893 Label is_flat, nonnull, Done, has_null_marker;
3894 __ load_unsigned_byte(rscratch1, Address(rcx, in_bytes(ResolvedFieldEntry::flags_offset())));
3895 __ test_field_has_null_marker(rscratch1, rscratch2, has_null_marker);
3896 __ test_field_is_flat(rscratch1, rscratch2, is_flat);
3897 // field is not flat
3898 __ load_heap_oop(rax, field);
3899 __ testptr(rax, rax);
3900 __ jcc(Assembler::notZero, nonnull);
3901 __ load_unsigned_short(rdx, Address(rcx, in_bytes(ResolvedFieldEntry::field_index_offset())));
3902 __ movptr(rcx, Address(rcx, ResolvedFieldEntry::field_holder_offset()));
3903 __ get_inline_type_field_klass(rcx, rdx, rbx);
3904 __ get_default_value_oop(rbx, rcx, rax);
3905 __ bind(nonnull);
3906 __ verify_oop(rax);
3907 __ jmp(Done);
3908 __ bind(is_flat);
3909 // field is flat
3910 __ read_flat_field(rcx, rdx, rbx, rax);
3911 __ jmp(Done);
3912 __ bind(has_null_marker);
3913 // rax = instance, rcx = resolved entry
3914 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::read_nullable_flat_field), rax, rcx);
3915 __ get_vm_result(rax, r15_thread);
3916 __ bind(Done);
3917 __ verify_oop(rax);
3918 }
3919 break;
3920 case Bytecodes::_fast_agetfield:
3921 do_oop_load(_masm, field, rax);
3922 __ verify_oop(rax);
3923 break;
3924 case Bytecodes::_fast_lgetfield:
3925 #ifdef _LP64
3926 __ access_load_at(T_LONG, IN_HEAP, noreg /* ltos */, field, noreg, noreg);
3927 #else
3928 __ stop("should not be rewritten");
3929 #endif
3930 break;
3931 case Bytecodes::_fast_igetfield:
3932 __ access_load_at(T_INT, IN_HEAP, rax, field, noreg, noreg);
3933 break;
3934 case Bytecodes::_fast_bgetfield:
3935 __ access_load_at(T_BYTE, IN_HEAP, rax, field, noreg, noreg);
3936 break;
3937 case Bytecodes::_fast_sgetfield:
3938 __ access_load_at(T_SHORT, IN_HEAP, rax, field, noreg, noreg);
3939 break;
3940 case Bytecodes::_fast_cgetfield:
3941 __ access_load_at(T_CHAR, IN_HEAP, rax, field, noreg, noreg);
3942 break;
3943 case Bytecodes::_fast_fgetfield:
3944 __ access_load_at(T_FLOAT, IN_HEAP, noreg /* ftos */, field, noreg, noreg);
3945 break;
3946 case Bytecodes::_fast_dgetfield:
3947 __ access_load_at(T_DOUBLE, IN_HEAP, noreg /* dtos */, field, noreg, noreg);
3948 break;
3949 default:
3950 ShouldNotReachHere();
3951 }
3952 // [jk] not needed currently
3953 // Label notVolatile;
3954 // __ testl(rdx, rdx);
3955 // __ jcc(Assembler::zero, notVolatile);
3956 // __ membar(Assembler::LoadLoad);
3957 // __ bind(notVolatile);
3958 }
3959
3960 void TemplateTable::fast_xaccess(TosState state) {
3961 transition(vtos, state);
3962
3963 // get receiver
3964 __ movptr(rax, aaddress(0));
3965 // access constant pool cache
3966 __ load_field_entry(rcx, rdx, 2);
3967 __ load_sized_value(rbx, Address(rcx, in_bytes(ResolvedFieldEntry::field_offset_offset())), sizeof(int), true /*is_signed*/);
3968
3969 // make sure exception is reported in correct bcp range (getfield is
3970 // next instruction)
3971 __ increment(rbcp);
3972 __ null_check(rax);
3973 const Address field = Address(rax, rbx, Address::times_1, 0*wordSize);
3974 switch (state) {
3975 case itos:
3976 __ access_load_at(T_INT, IN_HEAP, rax, field, noreg, noreg);
3977 break;
3978 case atos:
3979 do_oop_load(_masm, field, rax);
3980 __ verify_oop(rax);
3981 break;
3982 case ftos:
3983 __ access_load_at(T_FLOAT, IN_HEAP, noreg /* ftos */, field, noreg, noreg);
3984 break;
3985 default:
3986 ShouldNotReachHere();
3987 }
3988
3989 // [jk] not needed currently
3990 // Label notVolatile;
3991 // __ movl(rdx, Address(rcx, rdx, Address::times_8,
3992 // in_bytes(ConstantPoolCache::base_offset() +
3993 // ConstantPoolCacheEntry::flags_offset())));
3994 // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
3995 // __ testl(rdx, 0x1);
3996 // __ jcc(Assembler::zero, notVolatile);
3997 // __ membar(Assembler::LoadLoad);
3998 // __ bind(notVolatile);
3999
4000 __ decrement(rbcp);
4001 }
4002
4003 //-----------------------------------------------------------------------------
4004 // Calls
4005
4006 void TemplateTable::prepare_invoke(Register cache, Register recv, Register flags) {
4007 // determine flags
4008 const Bytecodes::Code code = bytecode();
4009 const bool load_receiver = (code != Bytecodes::_invokestatic) && (code != Bytecodes::_invokedynamic);
4010 assert_different_registers(recv, flags);
4011
4012 // save 'interpreter return address'
4013 __ save_bcp();
4014
4015 // Save flags and load TOS
4016 __ movl(rbcp, flags);
4017 __ load_unsigned_byte(flags, Address(cache, in_bytes(ResolvedMethodEntry::type_offset())));
4018
4019 // load receiver if needed (after appendix is pushed so parameter size is correct)
4020 // Note: no return address pushed yet
4021 if (load_receiver) {
4022 __ load_unsigned_short(recv, Address(cache, in_bytes(ResolvedMethodEntry::num_parameters_offset())));
4023 const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address
4024 const int receiver_is_at_end = -1; // back off one slot to get receiver
4025 Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end);
4026 __ movptr(recv, recv_addr);
4027 __ verify_oop(recv);
4028 }
4029
4030 // load return address
4031 {
4032 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
4033 ExternalAddress table(table_addr);
4034 #ifdef _LP64
4035 __ lea(rscratch1, table);
4036 __ movptr(flags, Address(rscratch1, flags, Address::times_ptr));
4037 #else
4038 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr)));
4039 #endif // _LP64
4040 }
4041
4042 // push return address
4043 __ push(flags);
4044
4045 // Restore flags value from the constant pool cache entry, and restore rsi
4046 // for later null checks. r13 is the bytecode pointer
4047 __ movl(flags, rbcp);
4048 __ restore_bcp();
4049 }
4050
4051 void TemplateTable::invokevirtual_helper(Register index,
4052 Register recv,
4053 Register flags) {
4054 // Uses temporary registers rax, rdx
4055 assert_different_registers(index, recv, rax, rdx);
4056 assert(index == rbx, "");
4057 assert(recv == rcx, "");
4058
4059 // Test for an invoke of a final method
4060 Label notFinal;
4061 __ movl(rax, flags);
4062 __ andl(rax, (1 << ResolvedMethodEntry::is_vfinal_shift));
4063 __ jcc(Assembler::zero, notFinal);
4064
4065 const Register method = index; // method must be rbx
4066 assert(method == rbx,
4067 "Method* must be rbx for interpreter calling convention");
4068
4069 // do the call - the index is actually the method to call
4070 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method*
4071
4072 // It's final, need a null check here!
4073 __ null_check(recv);
4074
4075 // profile this call
4076 __ profile_final_call(rax);
4077 __ profile_arguments_type(rax, method, rbcp, true);
4078
4079 __ jump_from_interpreted(method, rax);
4080
4081 __ bind(notFinal);
4082
4083 // get receiver klass
4084 __ load_klass(rax, recv, rscratch1);
4085
4086 // profile this call
4087 __ profile_virtual_call(rax, rlocals, rdx);
4088 // get target Method* & entry point
4089 __ lookup_virtual_method(rax, index, method);
4090
4091 __ profile_arguments_type(rdx, method, rbcp, true);
4092 __ jump_from_interpreted(method, rdx);
4093 }
4094
4095 void TemplateTable::invokevirtual(int byte_no) {
4096 transition(vtos, vtos);
4097 assert(byte_no == f2_byte, "use this argument");
4098
4099 load_resolved_method_entry_virtual(rcx, // ResolvedMethodEntry*
4100 rbx, // Method or itable index
4101 rdx); // Flags
4102 prepare_invoke(rcx, // ResolvedMethodEntry*
4103 rcx, // Receiver
4104 rdx); // flags
4105
4106 // rbx: index
4107 // rcx: receiver
4108 // rdx: flags
4109 invokevirtual_helper(rbx, rcx, rdx);
4110 }
4111
4112 void TemplateTable::invokespecial(int byte_no) {
4113 transition(vtos, vtos);
4114 assert(byte_no == f1_byte, "use this argument");
4115
4116 load_resolved_method_entry_special_or_static(rcx, // ResolvedMethodEntry*
4117 rbx, // Method*
4118 rdx); // flags
4119 prepare_invoke(rcx,
4120 rcx, // get receiver also for null check
4121 rdx); // flags
4122
4123 __ verify_oop(rcx);
4124 __ null_check(rcx);
4125 // do the call
4126 __ profile_call(rax);
4127 __ profile_arguments_type(rax, rbx, rbcp, false);
4128 __ jump_from_interpreted(rbx, rax);
4129 }
4130
4131 void TemplateTable::invokestatic(int byte_no) {
4132 transition(vtos, vtos);
4133 assert(byte_no == f1_byte, "use this argument");
4134
4135 load_resolved_method_entry_special_or_static(rcx, // ResolvedMethodEntry*
4136 rbx, // Method*
4137 rdx // flags
4138 );
4139 prepare_invoke(rcx, rcx, rdx); // cache and flags
4140
4141 // do the call
4142 __ profile_call(rax);
4143 __ profile_arguments_type(rax, rbx, rbcp, false);
4144 __ jump_from_interpreted(rbx, rax);
4145 }
4146
4147
4148 void TemplateTable::fast_invokevfinal(int byte_no) {
4149 transition(vtos, vtos);
4150 assert(byte_no == f2_byte, "use this argument");
4151 __ stop("fast_invokevfinal not used on x86");
4152 }
4153
4154
4155 void TemplateTable::invokeinterface(int byte_no) {
4156 transition(vtos, vtos);
4157 assert(byte_no == f1_byte, "use this argument");
4158
4159 load_resolved_method_entry_interface(rcx, // ResolvedMethodEntry*
4160 rax, // Klass*
4161 rbx, // Method* or itable/vtable index
4162 rdx); // flags
4163 prepare_invoke(rcx, rcx, rdx); // receiver, flags
4164
4165 // First check for Object case, then private interface method,
4166 // then regular interface method.
4167
4168 // Special case of invokeinterface called for virtual method of
4169 // java.lang.Object. See cpCache.cpp for details.
4170 Label notObjectMethod;
4171 __ movl(rlocals, rdx);
4172 __ andl(rlocals, (1 << ResolvedMethodEntry::is_forced_virtual_shift));
4173 __ jcc(Assembler::zero, notObjectMethod);
4174
4175 invokevirtual_helper(rbx, rcx, rdx);
4176 // no return from above
4177 __ bind(notObjectMethod);
4178
4179 Label no_such_interface; // for receiver subtype check
4180 Register recvKlass; // used for exception processing
4181
4182 // Check for private method invocation - indicated by vfinal
4183 Label notVFinal;
4184 __ movl(rlocals, rdx);
4185 __ andl(rlocals, (1 << ResolvedMethodEntry::is_vfinal_shift));
4186 __ jcc(Assembler::zero, notVFinal);
4187
4188 // Get receiver klass into rlocals - also a null check
4189 __ load_klass(rlocals, rcx, rscratch1);
4190
4191 Label subtype;
4192 __ check_klass_subtype(rlocals, rax, rbcp, subtype);
4193 // If we get here the typecheck failed
4194 recvKlass = rdx;
4195 __ mov(recvKlass, rlocals); // shuffle receiver class for exception use
4196 __ jmp(no_such_interface);
4197
4198 __ bind(subtype);
4199
4200 // do the call - rbx is actually the method to call
4201
4202 __ profile_final_call(rdx);
4203 __ profile_arguments_type(rdx, rbx, rbcp, true);
4204
4205 __ jump_from_interpreted(rbx, rdx);
4206 // no return from above
4207 __ bind(notVFinal);
4208
4209 // Get receiver klass into rdx - also a null check
4210 __ restore_locals(); // restore r14
4211 __ load_klass(rdx, rcx, rscratch1);
4212
4213 Label no_such_method;
4214
4215 // Preserve method for throw_AbstractMethodErrorVerbose.
4216 __ mov(rcx, rbx);
4217 // Receiver subtype check against REFC.
4218 // Superklass in rax. Subklass in rdx. Blows rcx, rdi.
4219 __ lookup_interface_method(// inputs: rec. class, interface, itable index
4220 rdx, rax, noreg,
4221 // outputs: scan temp. reg, scan temp. reg
4222 rbcp, rlocals,
4223 no_such_interface,
4224 /*return_method=*/false);
4225
4226 // profile this call
4227 __ restore_bcp(); // rbcp was destroyed by receiver type check
4228 __ profile_virtual_call(rdx, rbcp, rlocals);
4229
4230 // Get declaring interface class from method, and itable index
4231 __ load_method_holder(rax, rbx);
4232 __ movl(rbx, Address(rbx, Method::itable_index_offset()));
4233 __ subl(rbx, Method::itable_index_max);
4234 __ negl(rbx);
4235
4236 // Preserve recvKlass for throw_AbstractMethodErrorVerbose.
4237 __ mov(rlocals, rdx);
4238 __ lookup_interface_method(// inputs: rec. class, interface, itable index
4239 rlocals, rax, rbx,
4240 // outputs: method, scan temp. reg
4241 rbx, rbcp,
4242 no_such_interface);
4243
4244 // rbx: Method* to call
4245 // rcx: receiver
4246 // Check for abstract method error
4247 // Note: This should be done more efficiently via a throw_abstract_method_error
4248 // interpreter entry point and a conditional jump to it in case of a null
4249 // method.
4250 __ testptr(rbx, rbx);
4251 __ jcc(Assembler::zero, no_such_method);
4252
4253 __ profile_arguments_type(rdx, rbx, rbcp, true);
4254
4255 // do the call
4256 // rcx: receiver
4257 // rbx,: Method*
4258 __ jump_from_interpreted(rbx, rdx);
4259 __ should_not_reach_here();
4260
4261 // exception handling code follows...
4262 // note: must restore interpreter registers to canonical
4263 // state for exception handling to work correctly!
4264
4265 __ bind(no_such_method);
4266 // throw exception
4267 __ pop(rbx); // pop return address (pushed by prepare_invoke)
4268 __ restore_bcp(); // rbcp must be correct for exception handler (was destroyed)
4269 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
4270 // Pass arguments for generating a verbose error message.
4271 #ifdef _LP64
4272 recvKlass = c_rarg1;
4273 Register method = c_rarg2;
4274 if (recvKlass != rdx) { __ movq(recvKlass, rdx); }
4275 if (method != rcx) { __ movq(method, rcx); }
4276 #else
4277 recvKlass = rdx;
4278 Register method = rcx;
4279 #endif
4280 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodErrorVerbose),
4281 recvKlass, method);
4282 // The call_VM checks for exception, so we should never return here.
4283 __ should_not_reach_here();
4284
4285 __ bind(no_such_interface);
4286 // throw exception
4287 __ pop(rbx); // pop return address (pushed by prepare_invoke)
4288 __ restore_bcp(); // rbcp must be correct for exception handler (was destroyed)
4289 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
4290 // Pass arguments for generating a verbose error message.
4291 LP64_ONLY( if (recvKlass != rdx) { __ movq(recvKlass, rdx); } )
4292 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_IncompatibleClassChangeErrorVerbose),
4293 recvKlass, rax);
4294 // the call_VM checks for exception, so we should never return here.
4295 __ should_not_reach_here();
4296 }
4297
4298 void TemplateTable::invokehandle(int byte_no) {
4299 transition(vtos, vtos);
4300 assert(byte_no == f1_byte, "use this argument");
4301 const Register rbx_method = rbx;
4302 const Register rax_mtype = rax;
4303 const Register rcx_recv = rcx;
4304 const Register rdx_flags = rdx;
4305
4306 load_resolved_method_entry_handle(rcx, rbx_method, rax_mtype, rdx_flags);
4307 prepare_invoke(rcx, rcx_recv, rdx_flags);
4308
4309 __ verify_method_ptr(rbx_method);
4310 __ verify_oop(rcx_recv);
4311 __ null_check(rcx_recv);
4312
4313 // rax: MethodType object (from cpool->resolved_references[f1], if necessary)
4314 // rbx: MH.invokeExact_MT method
4315
4316 // Note: rax_mtype is already pushed (if necessary)
4317
4318 // FIXME: profile the LambdaForm also
4319 __ profile_final_call(rax);
4320 __ profile_arguments_type(rdx, rbx_method, rbcp, true);
4321
4322 __ jump_from_interpreted(rbx_method, rdx);
4323 }
4324
4325 void TemplateTable::invokedynamic(int byte_no) {
4326 transition(vtos, vtos);
4327 assert(byte_no == f1_byte, "use this argument");
4328
4329 const Register rbx_method = rbx;
4330 const Register rax_callsite = rax;
4331
4332 load_invokedynamic_entry(rbx_method);
4333 // rax: CallSite object (from cpool->resolved_references[])
4334 // rbx: MH.linkToCallSite method
4335
4336 // Note: rax_callsite is already pushed
4337
4338 // %%% should make a type profile for any invokedynamic that takes a ref argument
4339 // profile this call
4340 __ profile_call(rbcp);
4341 __ profile_arguments_type(rdx, rbx_method, rbcp, false);
4342
4343 __ verify_oop(rax_callsite);
4344
4345 __ jump_from_interpreted(rbx_method, rdx);
4346 }
4347
4348 //-----------------------------------------------------------------------------
4349 // Allocation
4350
4351 void TemplateTable::_new() {
4352 transition(vtos, atos);
4353 __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
4354 Label slow_case;
4355 Label done;
4356
4357 __ get_cpool_and_tags(rcx, rax);
4358
4359 // Make sure the class we're about to instantiate has been resolved.
4360 // This is done before loading InstanceKlass to be consistent with the order
4361 // how Constant Pool is updated (see ConstantPool::klass_at_put)
4362 const int tags_offset = Array<u1>::base_offset_in_bytes();
4363 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class);
4364 __ jcc(Assembler::notEqual, slow_case);
4365
4366 // get InstanceKlass
4367 __ load_resolved_klass_at_index(rcx, rcx, rdx);
4368
4369 // make sure klass is initialized
4370 // init_state needs acquire, but x86 is TSO, and so we are already good.
4371 #ifdef _LP64
4372 assert(VM_Version::supports_fast_class_init_checks(), "must support fast class initialization checks");
4373 __ clinit_barrier(rcx, r15_thread, nullptr /*L_fast_path*/, &slow_case);
4374 #else
4375 __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized);
4376 __ jcc(Assembler::notEqual, slow_case);
4377 #endif
4378
4379 __ allocate_instance(rcx, rax, rdx, rbx, true, slow_case);
4380 if (DTraceAllocProbes) {
4381 // Trigger dtrace event for fastpath
4382 __ push(atos);
4383 __ call_VM_leaf(
4384 CAST_FROM_FN_PTR(address, static_cast<int (*)(oopDesc*)>(SharedRuntime::dtrace_object_alloc)), rax);
4385 __ pop(atos);
4386 }
4387 __ jmp(done);
4388
4389 // slow case
4390 __ bind(slow_case);
4391
4392 Register rarg1 = LP64_ONLY(c_rarg1) NOT_LP64(rax);
4393 Register rarg2 = LP64_ONLY(c_rarg2) NOT_LP64(rdx);
4394
4395 __ get_constant_pool(rarg1);
4396 __ get_unsigned_2_byte_index_at_bcp(rarg2, 1);
4397 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rarg1, rarg2);
4398 __ verify_oop(rax);
4399
4400 // continue
4401 __ bind(done);
4402 }
4403
4404 void TemplateTable::newarray() {
4405 transition(itos, atos);
4406 Register rarg1 = LP64_ONLY(c_rarg1) NOT_LP64(rdx);
4407 __ load_unsigned_byte(rarg1, at_bcp(1));
4408 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray),
4409 rarg1, rax);
4410 }
4411
4412 void TemplateTable::anewarray() {
4413 transition(itos, atos);
4414
4415 Register rarg1 = LP64_ONLY(c_rarg1) NOT_LP64(rcx);
4416 Register rarg2 = LP64_ONLY(c_rarg2) NOT_LP64(rdx);
4417
4418 __ get_unsigned_2_byte_index_at_bcp(rarg2, 1);
4419 __ get_constant_pool(rarg1);
4420 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray),
4421 rarg1, rarg2, rax);
4422 }
4423
4424 void TemplateTable::arraylength() {
4425 transition(atos, itos);
4426 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes()));
4427 }
4428
4429 void TemplateTable::checkcast() {
4430 transition(atos, atos);
4431 Label done, is_null, ok_is_subtype, quicked, resolved;
4432 __ testptr(rax, rax); // object is in rax
4433 __ jcc(Assembler::zero, is_null);
4434
4435 // Get cpool & tags index
4436 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array
4437 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index
4438 // See if bytecode has already been quicked
4439 __ movzbl(rdx, Address(rdx, rbx,
4440 Address::times_1,
4441 Array<u1>::base_offset_in_bytes()));
4442 __ cmpl(rdx, JVM_CONSTANT_Class);
4443 __ jcc(Assembler::equal, quicked);
4444 __ push(atos); // save receiver for result, and for GC
4445 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
4446
4447 // vm_result_2 has metadata result
4448 #ifndef _LP64
4449 // borrow rdi from locals
4450 __ get_thread(rdi);
4451 __ get_vm_result_2(rax, rdi);
4452 __ restore_locals();
4453 #else
4454 __ get_vm_result_2(rax, r15_thread);
4455 #endif
4456
4457 __ pop_ptr(rdx); // restore receiver
4458 __ jmpb(resolved);
4459
4460 // Get superklass in rax and subklass in rbx
4461 __ bind(quicked);
4462 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check
4463 __ load_resolved_klass_at_index(rax, rcx, rbx);
4464
4465 __ bind(resolved);
4466 __ load_klass(rbx, rdx, rscratch1);
4467
4468 // Generate subtype check. Blows rcx, rdi. Object in rdx.
4469 // Superklass in rax. Subklass in rbx.
4470 __ gen_subtype_check(rbx, ok_is_subtype);
4471
4472 // Come here on failure
4473 __ push_ptr(rdx);
4474 // object is at TOS
4475 __ jump(RuntimeAddress(Interpreter::_throw_ClassCastException_entry));
4476
4477 // Come here on success
4478 __ bind(ok_is_subtype);
4479 __ mov(rax, rdx); // Restore object in rdx
4480 __ jmp(done);
4481
4482 __ bind(is_null);
4483
4484 // Collect counts on whether this check-cast sees nulls a lot or not.
4485 if (ProfileInterpreter) {
4486 __ profile_null_seen(rcx);
4487 }
4488
4489 __ bind(done);
4490 }
4491
4492 void TemplateTable::instanceof() {
4493 transition(atos, itos);
4494 Label done, is_null, ok_is_subtype, quicked, resolved;
4495 __ testptr(rax, rax);
4496 __ jcc(Assembler::zero, is_null);
4497
4498 // Get cpool & tags index
4499 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array
4500 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index
4501 // See if bytecode has already been quicked
4502 __ movzbl(rdx, Address(rdx, rbx,
4503 Address::times_1,
4504 Array<u1>::base_offset_in_bytes()));
4505 __ cmpl(rdx, JVM_CONSTANT_Class);
4506 __ jcc(Assembler::equal, quicked);
4507
4508 __ push(atos); // save receiver for result, and for GC
4509 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
4510 // vm_result_2 has metadata result
4511
4512 #ifndef _LP64
4513 // borrow rdi from locals
4514 __ get_thread(rdi);
4515 __ get_vm_result_2(rax, rdi);
4516 __ restore_locals();
4517 #else
4518 __ get_vm_result_2(rax, r15_thread);
4519 #endif
4520
4521 __ pop_ptr(rdx); // restore receiver
4522 __ verify_oop(rdx);
4523 __ load_klass(rdx, rdx, rscratch1);
4524 __ jmpb(resolved);
4525
4526 // Get superklass in rax and subklass in rdx
4527 __ bind(quicked);
4528 __ load_klass(rdx, rax, rscratch1);
4529 __ load_resolved_klass_at_index(rax, rcx, rbx);
4530
4531 __ bind(resolved);
4532
4533 // Generate subtype check. Blows rcx, rdi
4534 // Superklass in rax. Subklass in rdx.
4535 __ gen_subtype_check(rdx, ok_is_subtype);
4536
4537 // Come here on failure
4538 __ xorl(rax, rax);
4539 __ jmpb(done);
4540 // Come here on success
4541 __ bind(ok_is_subtype);
4542 __ movl(rax, 1);
4543
4544 // Collect counts on whether this test sees nulls a lot or not.
4545 if (ProfileInterpreter) {
4546 __ jmp(done);
4547 __ bind(is_null);
4548 __ profile_null_seen(rcx);
4549 } else {
4550 __ bind(is_null); // same as 'done'
4551 }
4552 __ bind(done);
4553 // rax = 0: obj == nullptr or obj is not an instanceof the specified klass
4554 // rax = 1: obj != nullptr and obj is an instanceof the specified klass
4555 }
4556
4557 //----------------------------------------------------------------------------------------------------
4558 // Breakpoints
4559 void TemplateTable::_breakpoint() {
4560 // Note: We get here even if we are single stepping..
4561 // jbug insists on setting breakpoints at every bytecode
4562 // even if we are in single step mode.
4563
4564 transition(vtos, vtos);
4565
4566 Register rarg = LP64_ONLY(c_rarg1) NOT_LP64(rcx);
4567
4568 // get the unpatched byte code
4569 __ get_method(rarg);
4570 __ call_VM(noreg,
4571 CAST_FROM_FN_PTR(address,
4572 InterpreterRuntime::get_original_bytecode_at),
4573 rarg, rbcp);
4574 __ mov(rbx, rax); // why?
4575
4576 // post the breakpoint event
4577 __ get_method(rarg);
4578 __ call_VM(noreg,
4579 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint),
4580 rarg, rbcp);
4581
4582 // complete the execution of original bytecode
4583 __ dispatch_only_normal(vtos);
4584 }
4585
4586 //-----------------------------------------------------------------------------
4587 // Exceptions
4588
4589 void TemplateTable::athrow() {
4590 transition(atos, vtos);
4591 __ null_check(rax);
4592 __ jump(RuntimeAddress(Interpreter::throw_exception_entry()));
4593 }
4594
4595 //-----------------------------------------------------------------------------
4596 // Synchronization
4597 //
4598 // Note: monitorenter & exit are symmetric routines; which is reflected
4599 // in the assembly code structure as well
4600 //
4601 // Stack layout:
4602 //
4603 // [expressions ] <--- rsp = expression stack top
4604 // ..
4605 // [expressions ]
4606 // [monitor entry] <--- monitor block top = expression stack bot
4607 // ..
4608 // [monitor entry]
4609 // [frame data ] <--- monitor block bot
4610 // ...
4611 // [saved rbp ] <--- rbp
4612 void TemplateTable::monitorenter() {
4613 transition(atos, vtos);
4614
4615 // check for null object
4616 __ null_check(rax);
4617
4618 Label is_inline_type;
4619 __ movptr(rbx, Address(rax, oopDesc::mark_offset_in_bytes()));
4620 __ test_markword_is_inline_type(rbx, is_inline_type);
4621
4622 const Address monitor_block_top(
4623 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
4624 const Address monitor_block_bot(
4625 rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
4626 const int entry_size = frame::interpreter_frame_monitor_size_in_bytes();
4627
4628 Label allocated;
4629
4630 Register rtop = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
4631 Register rbot = LP64_ONLY(c_rarg2) NOT_LP64(rbx);
4632 Register rmon = LP64_ONLY(c_rarg1) NOT_LP64(rdx);
4633
4634 // initialize entry pointer
4635 __ xorl(rmon, rmon); // points to free slot or null
4636
4637 // find a free slot in the monitor block (result in rmon)
4638 {
4639 Label entry, loop, exit;
4640 __ movptr(rtop, monitor_block_top); // derelativize pointer
4641 __ lea(rtop, Address(rbp, rtop, Address::times_ptr));
4642 // rtop points to current entry, starting with top-most entry
4643
4644 __ lea(rbot, monitor_block_bot); // points to word before bottom
4645 // of monitor block
4646 __ jmpb(entry);
4647
4648 __ bind(loop);
4649 // check if current entry is used
4650 __ cmpptr(Address(rtop, BasicObjectLock::obj_offset()), NULL_WORD);
4651 // if not used then remember entry in rmon
4652 __ cmovptr(Assembler::equal, rmon, rtop); // cmov => cmovptr
4653 // check if current entry is for same object
4654 __ cmpptr(rax, Address(rtop, BasicObjectLock::obj_offset()));
4655 // if same object then stop searching
4656 __ jccb(Assembler::equal, exit);
4657 // otherwise advance to next entry
4658 __ addptr(rtop, entry_size);
4659 __ bind(entry);
4660 // check if bottom reached
4661 __ cmpptr(rtop, rbot);
4662 // if not at bottom then check this entry
4663 __ jcc(Assembler::notEqual, loop);
4664 __ bind(exit);
4665 }
4666
4667 __ testptr(rmon, rmon); // check if a slot has been found
4668 __ jcc(Assembler::notZero, allocated); // if found, continue with that one
4669
4670 // allocate one if there's no free slot
4671 {
4672 Label entry, loop;
4673 // 1. compute new pointers // rsp: old expression stack top
4674 __ movptr(rmon, monitor_block_bot); // rmon: old expression stack bottom
4675 __ lea(rmon, Address(rbp, rmon, Address::times_ptr));
4676 __ subptr(rsp, entry_size); // move expression stack top
4677 __ subptr(rmon, entry_size); // move expression stack bottom
4678 __ mov(rtop, rsp); // set start value for copy loop
4679 __ subptr(monitor_block_bot, entry_size / wordSize); // set new monitor block bottom
4680 __ jmp(entry);
4681 // 2. move expression stack contents
4682 __ bind(loop);
4683 __ movptr(rbot, Address(rtop, entry_size)); // load expression stack
4684 // word from old location
4685 __ movptr(Address(rtop, 0), rbot); // and store it at new location
4686 __ addptr(rtop, wordSize); // advance to next word
4687 __ bind(entry);
4688 __ cmpptr(rtop, rmon); // check if bottom reached
4689 __ jcc(Assembler::notEqual, loop); // if not at bottom then
4690 // copy next word
4691 }
4692
4693 // call run-time routine
4694 // rmon: points to monitor entry
4695 __ bind(allocated);
4696
4697 // Increment bcp to point to the next bytecode, so exception
4698 // handling for async. exceptions work correctly.
4699 // The object has already been popped from the stack, so the
4700 // expression stack looks correct.
4701 __ increment(rbcp);
4702
4703 // store object
4704 __ movptr(Address(rmon, BasicObjectLock::obj_offset()), rax);
4705 __ lock_object(rmon);
4706
4707 // check to make sure this monitor doesn't cause stack overflow after locking
4708 __ save_bcp(); // in case of exception
4709 __ generate_stack_overflow_check(0);
4710
4711 // The bcp has already been incremented. Just need to dispatch to
4712 // next instruction.
4713 __ dispatch_next(vtos);
4714
4715 __ bind(is_inline_type);
4716 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
4717 InterpreterRuntime::throw_identity_exception), rax);
4718 __ should_not_reach_here();
4719 }
4720
4721 void TemplateTable::monitorexit() {
4722 transition(atos, vtos);
4723
4724 // check for null object
4725 __ null_check(rax);
4726
4727 const int is_inline_type_mask = markWord::inline_type_pattern;
4728 Label has_identity;
4729 __ movptr(rbx, Address(rax, oopDesc::mark_offset_in_bytes()));
4730 __ andptr(rbx, is_inline_type_mask);
4731 __ cmpl(rbx, is_inline_type_mask);
4732 __ jcc(Assembler::notEqual, has_identity);
4733 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
4734 InterpreterRuntime::throw_illegal_monitor_state_exception));
4735 __ should_not_reach_here();
4736 __ bind(has_identity);
4737
4738 const Address monitor_block_top(
4739 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
4740 const Address monitor_block_bot(
4741 rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
4742 const int entry_size = frame::interpreter_frame_monitor_size_in_bytes();
4743
4744 Register rtop = LP64_ONLY(c_rarg1) NOT_LP64(rdx);
4745 Register rbot = LP64_ONLY(c_rarg2) NOT_LP64(rbx);
4746
4747 Label found;
4748
4749 // find matching slot
4750 {
4751 Label entry, loop;
4752 __ movptr(rtop, monitor_block_top); // derelativize pointer
4753 __ lea(rtop, Address(rbp, rtop, Address::times_ptr));
4754 // rtop points to current entry, starting with top-most entry
4755
4756 __ lea(rbot, monitor_block_bot); // points to word before bottom
4757 // of monitor block
4758 __ jmpb(entry);
4759
4760 __ bind(loop);
4761 // check if current entry is for same object
4762 __ cmpptr(rax, Address(rtop, BasicObjectLock::obj_offset()));
4763 // if same object then stop searching
4764 __ jcc(Assembler::equal, found);
4765 // otherwise advance to next entry
4766 __ addptr(rtop, entry_size);
4767 __ bind(entry);
4768 // check if bottom reached
4769 __ cmpptr(rtop, rbot);
4770 // if not at bottom then check this entry
4771 __ jcc(Assembler::notEqual, loop);
4772 }
4773
4774 // error handling. Unlocking was not block-structured
4775 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
4776 InterpreterRuntime::throw_illegal_monitor_state_exception));
4777 __ should_not_reach_here();
4778
4779 // call run-time routine
4780 __ bind(found);
4781 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps)
4782 __ unlock_object(rtop);
4783 __ pop_ptr(rax); // discard object
4784 }
4785
4786 // Wide instructions
4787 void TemplateTable::wide() {
4788 transition(vtos, vtos);
4789 __ load_unsigned_byte(rbx, at_bcp(1));
4790 ExternalAddress wtable((address)Interpreter::_wentry_point);
4791 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr)), rscratch1);
4792 // Note: the rbcp increment step is part of the individual wide bytecode implementations
4793 }
4794
4795 // Multi arrays
4796 void TemplateTable::multianewarray() {
4797 transition(vtos, atos);
4798
4799 Register rarg = LP64_ONLY(c_rarg1) NOT_LP64(rax);
4800 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions
4801 // last dim is on top of stack; we want address of first one:
4802 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize
4803 // the latter wordSize to point to the beginning of the array.
4804 __ lea(rarg, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize));
4805 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rarg);
4806 __ load_unsigned_byte(rbx, at_bcp(3));
4807 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts
4808 }