1 /*
2 * Copyright (c) 1997, 2018, 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 "interpreter/interpreter.hpp"
27 #include "interpreter/interpreterRuntime.hpp"
28 #include "interpreter/interp_masm.hpp"
29 #include "interpreter/templateTable.hpp"
30 #include "memory/universe.hpp"
31 #include "oops/methodData.hpp"
32 #include "oops/objArrayKlass.hpp"
33 #include "oops/oop.inline.hpp"
34 #include "prims/methodHandles.hpp"
35 #include "runtime/safepointMechanism.hpp"
36 #include "runtime/sharedRuntime.hpp"
37 #include "runtime/stubRoutines.hpp"
38 #include "runtime/synchronizer.hpp"
39 #include "utilities/macros.hpp"
40
41 #define __ _masm->
42
43 // Misc helpers
44
45 // Do an oop store like *(base + index + offset) = val
46 // index can be noreg,
47 static void do_oop_store(InterpreterMacroAssembler* _masm,
48 Register base,
49 Register index,
50 int offset,
51 Register val,
52 Register tmp,
53 BarrierSet::Name barrier,
54 bool precise) {
55 assert(tmp != val && tmp != base && tmp != index, "register collision");
56 assert(index == noreg || offset == 0, "only one offset");
57 switch (barrier) {
58 #if INCLUDE_ALL_GCS
59 case BarrierSet::G1BarrierSet:
60 {
61 // Load and record the previous value.
62 __ g1_write_barrier_pre(base, index, offset,
63 noreg /* pre_val */,
64 tmp, true /*preserve_o_regs*/);
65
66 // G1 barrier needs uncompressed oop for region cross check.
67 Register new_val = val;
68 if (UseCompressedOops && val != G0) {
69 new_val = tmp;
70 __ mov(val, new_val);
71 }
72
73 if (index == noreg ) {
74 assert(Assembler::is_simm13(offset), "fix this code");
75 __ store_heap_oop(val, base, offset);
76 } else {
77 __ store_heap_oop(val, base, index);
78 }
79
80 // No need for post barrier if storing NULL
81 if (val != G0) {
82 if (precise) {
83 if (index == noreg) {
84 __ add(base, offset, base);
85 } else {
86 __ add(base, index, base);
87 }
88 }
89 __ g1_write_barrier_post(base, new_val, tmp);
90 }
91 }
92 break;
93 #endif // INCLUDE_ALL_GCS
94 case BarrierSet::CardTableBarrierSet:
95 {
96 if (index == noreg ) {
97 assert(Assembler::is_simm13(offset), "fix this code");
98 __ store_heap_oop(val, base, offset);
99 } else {
100 __ store_heap_oop(val, base, index);
101 }
102 // No need for post barrier if storing NULL
103 if (val != G0) {
104 if (precise) {
105 if (index == noreg) {
106 __ add(base, offset, base);
107 } else {
108 __ add(base, index, base);
109 }
110 }
111 __ card_write_barrier_post(base, val, tmp);
112 }
113 }
114 break;
115 case BarrierSet::ModRef:
116 ShouldNotReachHere();
117 break;
118 default :
119 ShouldNotReachHere();
120
121 }
122 }
123
124
125 //----------------------------------------------------------------------------------------------------
126 // Platform-dependent initialization
127
128 void TemplateTable::pd_initialize() {
129 // (none)
130 }
131
132
133 //----------------------------------------------------------------------------------------------------
134 // Condition conversion
135 Assembler::Condition ccNot(TemplateTable::Condition cc) {
136 switch (cc) {
137 case TemplateTable::equal : return Assembler::notEqual;
138 case TemplateTable::not_equal : return Assembler::equal;
139 case TemplateTable::less : return Assembler::greaterEqual;
140 case TemplateTable::less_equal : return Assembler::greater;
141 case TemplateTable::greater : return Assembler::lessEqual;
142 case TemplateTable::greater_equal: return Assembler::less;
143 }
144 ShouldNotReachHere();
145 return Assembler::zero;
146 }
147
148 //----------------------------------------------------------------------------------------------------
149 // Miscelaneous helper routines
150
151
152 Address TemplateTable::at_bcp(int offset) {
153 assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
154 return Address(Lbcp, offset);
155 }
156
157
158 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
159 Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
160 int byte_no) {
161 // With sharing on, may need to test Method* flag.
162 if (!RewriteBytecodes) return;
163 Label L_patch_done;
164
165 switch (bc) {
166 case Bytecodes::_fast_aputfield:
167 case Bytecodes::_fast_bputfield:
168 case Bytecodes::_fast_zputfield:
169 case Bytecodes::_fast_cputfield:
170 case Bytecodes::_fast_dputfield:
171 case Bytecodes::_fast_fputfield:
172 case Bytecodes::_fast_iputfield:
173 case Bytecodes::_fast_lputfield:
174 case Bytecodes::_fast_sputfield:
175 {
176 // We skip bytecode quickening for putfield instructions when
177 // the put_code written to the constant pool cache is zero.
178 // This is required so that every execution of this instruction
179 // calls out to InterpreterRuntime::resolve_get_put to do
180 // additional, required work.
181 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
182 assert(load_bc_into_bc_reg, "we use bc_reg as temp");
183 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1);
184 __ set(bc, bc_reg);
185 __ cmp_and_br_short(temp_reg, 0, Assembler::equal, Assembler::pn, L_patch_done); // don't patch
186 }
187 break;
188 default:
189 assert(byte_no == -1, "sanity");
190 if (load_bc_into_bc_reg) {
191 __ set(bc, bc_reg);
192 }
193 }
194
195 if (JvmtiExport::can_post_breakpoint()) {
196 Label L_fast_patch;
197 __ ldub(at_bcp(0), temp_reg);
198 __ cmp_and_br_short(temp_reg, Bytecodes::_breakpoint, Assembler::notEqual, Assembler::pt, L_fast_patch);
199 // perform the quickening, slowly, in the bowels of the breakpoint table
200 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), Lmethod, Lbcp, bc_reg);
201 __ ba_short(L_patch_done);
202 __ bind(L_fast_patch);
203 }
204
205 #ifdef ASSERT
206 Bytecodes::Code orig_bytecode = Bytecodes::java_code(bc);
207 Label L_okay;
208 __ ldub(at_bcp(0), temp_reg);
209 __ cmp(temp_reg, orig_bytecode);
210 __ br(Assembler::equal, false, Assembler::pt, L_okay);
211 __ delayed()->cmp(temp_reg, bc_reg);
212 __ br(Assembler::equal, false, Assembler::pt, L_okay);
213 __ delayed()->nop();
214 __ stop("patching the wrong bytecode");
215 __ bind(L_okay);
216 #endif
217
218 // patch bytecode
219 __ stb(bc_reg, at_bcp(0));
220 __ bind(L_patch_done);
221 }
222
223 //----------------------------------------------------------------------------------------------------
224 // Individual instructions
225
226 void TemplateTable::nop() {
227 transition(vtos, vtos);
228 // nothing to do
229 }
230
231 void TemplateTable::shouldnotreachhere() {
232 transition(vtos, vtos);
233 __ stop("shouldnotreachhere bytecode");
234 }
235
236 void TemplateTable::aconst_null() {
237 transition(vtos, atos);
238 __ clr(Otos_i);
239 }
240
241
242 void TemplateTable::iconst(int value) {
243 transition(vtos, itos);
244 __ set(value, Otos_i);
245 }
246
247
248 void TemplateTable::lconst(int value) {
249 transition(vtos, ltos);
250 assert(value >= 0, "check this code");
251 __ set(value, Otos_l);
252 }
253
254
255 void TemplateTable::fconst(int value) {
256 transition(vtos, ftos);
257 static float zero = 0.0, one = 1.0, two = 2.0;
258 float* p;
259 switch( value ) {
260 default: ShouldNotReachHere();
261 case 0: p = &zero; break;
262 case 1: p = &one; break;
263 case 2: p = &two; break;
264 }
265 AddressLiteral a(p);
266 __ sethi(a, G3_scratch);
267 __ ldf(FloatRegisterImpl::S, G3_scratch, a.low10(), Ftos_f);
268 }
269
270
271 void TemplateTable::dconst(int value) {
272 transition(vtos, dtos);
273 static double zero = 0.0, one = 1.0;
274 double* p;
275 switch( value ) {
276 default: ShouldNotReachHere();
277 case 0: p = &zero; break;
278 case 1: p = &one; break;
279 }
280 AddressLiteral a(p);
281 __ sethi(a, G3_scratch);
282 __ ldf(FloatRegisterImpl::D, G3_scratch, a.low10(), Ftos_d);
283 }
284
285
286 // %%%%% Should factore most snippet templates across platforms
287
288 void TemplateTable::bipush() {
289 transition(vtos, itos);
290 __ ldsb( at_bcp(1), Otos_i );
291 }
292
293 void TemplateTable::sipush() {
294 transition(vtos, itos);
295 __ get_2_byte_integer_at_bcp(1, G3_scratch, Otos_i, InterpreterMacroAssembler::Signed);
296 }
297
298 void TemplateTable::ldc(bool wide) {
299 transition(vtos, vtos);
300 Label call_ldc, notInt, isString, notString, notClass, exit;
301
302 if (wide) {
303 __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
304 } else {
305 __ ldub(Lbcp, 1, O1);
306 }
307 __ get_cpool_and_tags(O0, O2);
308
309 const int base_offset = ConstantPool::header_size() * wordSize;
310 const int tags_offset = Array<u1>::base_offset_in_bytes();
311
312 // get type from tags
313 __ add(O2, tags_offset, O2);
314 __ ldub(O2, O1, O2);
315
316 // unresolved class? If so, must resolve
317 __ cmp_and_brx_short(O2, JVM_CONSTANT_UnresolvedClass, Assembler::equal, Assembler::pt, call_ldc);
318
319 // unresolved class in error state
320 __ cmp_and_brx_short(O2, JVM_CONSTANT_UnresolvedClassInError, Assembler::equal, Assembler::pn, call_ldc);
321
322 __ cmp(O2, JVM_CONSTANT_Class); // need to call vm to get java mirror of the class
323 __ brx(Assembler::notEqual, true, Assembler::pt, notClass);
324 __ delayed()->add(O0, base_offset, O0);
325
326 __ bind(call_ldc);
327 __ set(wide, O1);
328 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), O1);
329 __ push(atos);
330 __ ba_short(exit);
331
332 __ bind(notClass);
333 // __ add(O0, base_offset, O0);
334 __ sll(O1, LogBytesPerWord, O1);
335 __ cmp(O2, JVM_CONSTANT_Integer);
336 __ brx(Assembler::notEqual, true, Assembler::pt, notInt);
337 __ delayed()->cmp(O2, JVM_CONSTANT_String);
338 __ ld(O0, O1, Otos_i);
339 __ push(itos);
340 __ ba_short(exit);
341
342 __ bind(notInt);
343 // __ cmp(O2, JVM_CONSTANT_String);
344 __ brx(Assembler::notEqual, true, Assembler::pt, notString);
345 __ delayed()->ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
346 __ bind(isString);
347 __ stop("string should be rewritten to fast_aldc");
348 __ ba_short(exit);
349
350 __ bind(notString);
351 // __ ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
352 __ push(ftos);
353
354 __ bind(exit);
355 }
356
357 // Fast path for caching oop constants.
358 // %%% We should use this to handle Class and String constants also.
359 // %%% It will simplify the ldc/primitive path considerably.
360 void TemplateTable::fast_aldc(bool wide) {
361 transition(vtos, atos);
362
363 int index_size = wide ? sizeof(u2) : sizeof(u1);
364 Label resolved;
365
366 // We are resolved if the resolved reference cache entry contains a
367 // non-null object (CallSite, etc.)
368 assert_different_registers(Otos_i, G3_scratch);
369 __ get_cache_index_at_bcp(Otos_i, G3_scratch, 1, index_size); // load index => G3_scratch
370 __ load_resolved_reference_at_index(Otos_i, G3_scratch);
371 __ tst(Otos_i);
372 __ br(Assembler::notEqual, false, Assembler::pt, resolved);
373 __ delayed()->set((int)bytecode(), O1);
374
375 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
376
377 // first time invocation - must resolve first
378 __ call_VM(Otos_i, entry, O1);
379 __ bind(resolved);
380 __ verify_oop(Otos_i);
381 }
382
383 void TemplateTable::ldc2_w() {
384 transition(vtos, vtos);
385 Label Long, exit;
386
387 __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
388 __ get_cpool_and_tags(O0, O2);
389
390 const int base_offset = ConstantPool::header_size() * wordSize;
391 const int tags_offset = Array<u1>::base_offset_in_bytes();
392 // get type from tags
393 __ add(O2, tags_offset, O2);
394 __ ldub(O2, O1, O2);
395
396 __ sll(O1, LogBytesPerWord, O1);
397 __ add(O0, O1, G3_scratch);
398
399 __ cmp_and_brx_short(O2, JVM_CONSTANT_Double, Assembler::notEqual, Assembler::pt, Long);
400 // A double can be placed at word-aligned locations in the constant pool.
401 // Check out Conversions.java for an example.
402 // Also ConstantPool::header_size() is 20, which makes it very difficult
403 // to double-align double on the constant pool. SG, 11/7/97
404 __ ldf(FloatRegisterImpl::D, G3_scratch, base_offset, Ftos_d);
405 __ push(dtos);
406 __ ba_short(exit);
407
408 __ bind(Long);
409 __ ldx(G3_scratch, base_offset, Otos_l);
410 __ push(ltos);
411
412 __ bind(exit);
413 }
414
415 void TemplateTable::locals_index(Register reg, int offset) {
416 __ ldub( at_bcp(offset), reg );
417 }
418
419 void TemplateTable::locals_index_wide(Register reg) {
420 // offset is 2, not 1, because Lbcp points to wide prefix code
421 __ get_2_byte_integer_at_bcp(2, G4_scratch, reg, InterpreterMacroAssembler::Unsigned);
422 }
423
424 void TemplateTable::iload() {
425 iload_internal();
426 }
427
428 void TemplateTable::nofast_iload() {
429 iload_internal(may_not_rewrite);
430 }
431
432 void TemplateTable::iload_internal(RewriteControl rc) {
433 transition(vtos, itos);
434 // Rewrite iload,iload pair into fast_iload2
435 // iload,caload pair into fast_icaload
436 if (RewriteFrequentPairs && rc == may_rewrite) {
437 Label rewrite, done;
438
439 // get next byte
440 __ ldub(at_bcp(Bytecodes::length_for(Bytecodes::_iload)), G3_scratch);
441
442 // if _iload, wait to rewrite to iload2. We only want to rewrite the
443 // last two iloads in a pair. Comparing against fast_iload means that
444 // the next bytecode is neither an iload or a caload, and therefore
445 // an iload pair.
446 __ cmp_and_br_short(G3_scratch, (int)Bytecodes::_iload, Assembler::equal, Assembler::pn, done);
447
448 __ cmp(G3_scratch, (int)Bytecodes::_fast_iload);
449 __ br(Assembler::equal, false, Assembler::pn, rewrite);
450 __ delayed()->set(Bytecodes::_fast_iload2, G4_scratch);
451
452 __ cmp(G3_scratch, (int)Bytecodes::_caload);
453 __ br(Assembler::equal, false, Assembler::pn, rewrite);
454 __ delayed()->set(Bytecodes::_fast_icaload, G4_scratch);
455
456 __ set(Bytecodes::_fast_iload, G4_scratch); // don't check again
457 // rewrite
458 // G4_scratch: fast bytecode
459 __ bind(rewrite);
460 patch_bytecode(Bytecodes::_iload, G4_scratch, G3_scratch, false);
461 __ bind(done);
462 }
463
464 // Get the local value into tos
465 locals_index(G3_scratch);
466 __ access_local_int( G3_scratch, Otos_i );
467 }
468
469 void TemplateTable::fast_iload2() {
470 transition(vtos, itos);
471 locals_index(G3_scratch);
472 __ access_local_int( G3_scratch, Otos_i );
473 __ push_i();
474 locals_index(G3_scratch, 3); // get next bytecode's local index.
475 __ access_local_int( G3_scratch, Otos_i );
476 }
477
478 void TemplateTable::fast_iload() {
479 transition(vtos, itos);
480 locals_index(G3_scratch);
481 __ access_local_int( G3_scratch, Otos_i );
482 }
483
484 void TemplateTable::lload() {
485 transition(vtos, ltos);
486 locals_index(G3_scratch);
487 __ access_local_long( G3_scratch, Otos_l );
488 }
489
490
491 void TemplateTable::fload() {
492 transition(vtos, ftos);
493 locals_index(G3_scratch);
494 __ access_local_float( G3_scratch, Ftos_f );
495 }
496
497
498 void TemplateTable::dload() {
499 transition(vtos, dtos);
500 locals_index(G3_scratch);
501 __ access_local_double( G3_scratch, Ftos_d );
502 }
503
504
505 void TemplateTable::aload() {
506 transition(vtos, atos);
507 locals_index(G3_scratch);
508 __ access_local_ptr( G3_scratch, Otos_i);
509 }
510
511
512 void TemplateTable::wide_iload() {
513 transition(vtos, itos);
514 locals_index_wide(G3_scratch);
515 __ access_local_int( G3_scratch, Otos_i );
516 }
517
518
519 void TemplateTable::wide_lload() {
520 transition(vtos, ltos);
521 locals_index_wide(G3_scratch);
522 __ access_local_long( G3_scratch, Otos_l );
523 }
524
525
526 void TemplateTable::wide_fload() {
527 transition(vtos, ftos);
528 locals_index_wide(G3_scratch);
529 __ access_local_float( G3_scratch, Ftos_f );
530 }
531
532
533 void TemplateTable::wide_dload() {
534 transition(vtos, dtos);
535 locals_index_wide(G3_scratch);
536 __ access_local_double( G3_scratch, Ftos_d );
537 }
538
539
540 void TemplateTable::wide_aload() {
541 transition(vtos, atos);
542 locals_index_wide(G3_scratch);
543 __ access_local_ptr( G3_scratch, Otos_i );
544 __ verify_oop(Otos_i);
545 }
546
547
548 void TemplateTable::iaload() {
549 transition(itos, itos);
550 // Otos_i: index
551 // tos: array
552 __ index_check(O2, Otos_i, LogBytesPerInt, G3_scratch, O3);
553 __ ld(O3, arrayOopDesc::base_offset_in_bytes(T_INT), Otos_i);
554 }
555
556
557 void TemplateTable::laload() {
558 transition(itos, ltos);
559 // Otos_i: index
560 // O2: array
561 __ index_check(O2, Otos_i, LogBytesPerLong, G3_scratch, O3);
562 __ ld_long(O3, arrayOopDesc::base_offset_in_bytes(T_LONG), Otos_l);
563 }
564
565
566 void TemplateTable::faload() {
567 transition(itos, ftos);
568 // Otos_i: index
569 // O2: array
570 __ index_check(O2, Otos_i, LogBytesPerInt, G3_scratch, O3);
571 __ ldf(FloatRegisterImpl::S, O3, arrayOopDesc::base_offset_in_bytes(T_FLOAT), Ftos_f);
572 }
573
574
575 void TemplateTable::daload() {
576 transition(itos, dtos);
577 // Otos_i: index
578 // O2: array
579 __ index_check(O2, Otos_i, LogBytesPerLong, G3_scratch, O3);
580 __ ldf(FloatRegisterImpl::D, O3, arrayOopDesc::base_offset_in_bytes(T_DOUBLE), Ftos_d);
581 }
582
583
584 void TemplateTable::aaload() {
585 transition(itos, atos);
586 // Otos_i: index
587 // tos: array
588 __ index_check(O2, Otos_i, UseCompressedOops ? 2 : LogBytesPerWord, G3_scratch, O3);
589 __ load_heap_oop(O3, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i);
590 __ verify_oop(Otos_i);
591 }
592
593
594 void TemplateTable::baload() {
595 transition(itos, itos);
596 // Otos_i: index
597 // tos: array
598 __ index_check(O2, Otos_i, 0, G3_scratch, O3);
599 __ ldsb(O3, arrayOopDesc::base_offset_in_bytes(T_BYTE), Otos_i);
600 }
601
602
603 void TemplateTable::caload() {
604 transition(itos, itos);
605 // Otos_i: index
606 // tos: array
607 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
608 __ lduh(O3, arrayOopDesc::base_offset_in_bytes(T_CHAR), Otos_i);
609 }
610
611 void TemplateTable::fast_icaload() {
612 transition(vtos, itos);
613 // Otos_i: index
614 // tos: array
615 locals_index(G3_scratch);
616 __ access_local_int( G3_scratch, Otos_i );
617 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
618 __ lduh(O3, arrayOopDesc::base_offset_in_bytes(T_CHAR), Otos_i);
619 }
620
621
622 void TemplateTable::saload() {
623 transition(itos, itos);
624 // Otos_i: index
625 // tos: array
626 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
627 __ ldsh(O3, arrayOopDesc::base_offset_in_bytes(T_SHORT), Otos_i);
628 }
629
630
631 void TemplateTable::iload(int n) {
632 transition(vtos, itos);
633 __ ld( Llocals, Interpreter::local_offset_in_bytes(n), Otos_i );
634 }
635
636
637 void TemplateTable::lload(int n) {
638 transition(vtos, ltos);
639 assert(n+1 < Argument::n_register_parameters, "would need more code");
640 __ load_unaligned_long(Llocals, Interpreter::local_offset_in_bytes(n+1), Otos_l);
641 }
642
643
644 void TemplateTable::fload(int n) {
645 transition(vtos, ftos);
646 assert(n < Argument::n_register_parameters, "would need more code");
647 __ ldf( FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(n), Ftos_f );
648 }
649
650
651 void TemplateTable::dload(int n) {
652 transition(vtos, dtos);
653 FloatRegister dst = Ftos_d;
654 __ load_unaligned_double(Llocals, Interpreter::local_offset_in_bytes(n+1), dst);
655 }
656
657
658 void TemplateTable::aload(int n) {
659 transition(vtos, atos);
660 __ ld_ptr( Llocals, Interpreter::local_offset_in_bytes(n), Otos_i );
661 }
662
663 void TemplateTable::aload_0() {
664 aload_0_internal();
665 }
666
667 void TemplateTable::nofast_aload_0() {
668 aload_0_internal(may_not_rewrite);
669 }
670
671 void TemplateTable::aload_0_internal(RewriteControl rc) {
672 transition(vtos, atos);
673
674 // According to bytecode histograms, the pairs:
675 //
676 // _aload_0, _fast_igetfield (itos)
677 // _aload_0, _fast_agetfield (atos)
678 // _aload_0, _fast_fgetfield (ftos)
679 //
680 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0
681 // bytecode checks the next bytecode and then rewrites the current
682 // bytecode into a pair bytecode; otherwise it rewrites the current
683 // bytecode into _fast_aload_0 that doesn't do the pair check anymore.
684 //
685 if (RewriteFrequentPairs && rc == may_rewrite) {
686 Label rewrite, done;
687
688 // get next byte
689 __ ldub(at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)), G3_scratch);
690
691 // if _getfield then wait with rewrite
692 __ cmp_and_br_short(G3_scratch, (int)Bytecodes::_getfield, Assembler::equal, Assembler::pn, done);
693
694 // if _igetfield then rewrite to _fast_iaccess_0
695 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
696 __ cmp(G3_scratch, (int)Bytecodes::_fast_igetfield);
697 __ br(Assembler::equal, false, Assembler::pn, rewrite);
698 __ delayed()->set(Bytecodes::_fast_iaccess_0, G4_scratch);
699
700 // if _agetfield then rewrite to _fast_aaccess_0
701 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
702 __ cmp(G3_scratch, (int)Bytecodes::_fast_agetfield);
703 __ br(Assembler::equal, false, Assembler::pn, rewrite);
704 __ delayed()->set(Bytecodes::_fast_aaccess_0, G4_scratch);
705
706 // if _fgetfield then rewrite to _fast_faccess_0
707 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
708 __ cmp(G3_scratch, (int)Bytecodes::_fast_fgetfield);
709 __ br(Assembler::equal, false, Assembler::pn, rewrite);
710 __ delayed()->set(Bytecodes::_fast_faccess_0, G4_scratch);
711
712 // else rewrite to _fast_aload0
713 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
714 __ set(Bytecodes::_fast_aload_0, G4_scratch);
715
716 // rewrite
717 // G4_scratch: fast bytecode
718 __ bind(rewrite);
719 patch_bytecode(Bytecodes::_aload_0, G4_scratch, G3_scratch, false);
720 __ bind(done);
721 }
722
723 // Do actual aload_0 (must do this after patch_bytecode which might call VM and GC might change oop).
724 aload(0);
725 }
726
727 void TemplateTable::istore() {
728 transition(itos, vtos);
729 locals_index(G3_scratch);
730 __ store_local_int( G3_scratch, Otos_i );
731 }
732
733
734 void TemplateTable::lstore() {
735 transition(ltos, vtos);
736 locals_index(G3_scratch);
737 __ store_local_long( G3_scratch, Otos_l );
738 }
739
740
741 void TemplateTable::fstore() {
742 transition(ftos, vtos);
743 locals_index(G3_scratch);
744 __ store_local_float( G3_scratch, Ftos_f );
745 }
746
747
748 void TemplateTable::dstore() {
749 transition(dtos, vtos);
750 locals_index(G3_scratch);
751 __ store_local_double( G3_scratch, Ftos_d );
752 }
753
754
755 void TemplateTable::astore() {
756 transition(vtos, vtos);
757 __ load_ptr(0, Otos_i);
758 __ inc(Lesp, Interpreter::stackElementSize);
759 __ verify_oop_or_return_address(Otos_i, G3_scratch);
760 locals_index(G3_scratch);
761 __ store_local_ptr(G3_scratch, Otos_i);
762 }
763
764
765 void TemplateTable::wide_istore() {
766 transition(vtos, vtos);
767 __ pop_i();
768 locals_index_wide(G3_scratch);
769 __ store_local_int( G3_scratch, Otos_i );
770 }
771
772
773 void TemplateTable::wide_lstore() {
774 transition(vtos, vtos);
775 __ pop_l();
776 locals_index_wide(G3_scratch);
777 __ store_local_long( G3_scratch, Otos_l );
778 }
779
780
781 void TemplateTable::wide_fstore() {
782 transition(vtos, vtos);
783 __ pop_f();
784 locals_index_wide(G3_scratch);
785 __ store_local_float( G3_scratch, Ftos_f );
786 }
787
788
789 void TemplateTable::wide_dstore() {
790 transition(vtos, vtos);
791 __ pop_d();
792 locals_index_wide(G3_scratch);
793 __ store_local_double( G3_scratch, Ftos_d );
794 }
795
796
797 void TemplateTable::wide_astore() {
798 transition(vtos, vtos);
799 __ load_ptr(0, Otos_i);
800 __ inc(Lesp, Interpreter::stackElementSize);
801 __ verify_oop_or_return_address(Otos_i, G3_scratch);
802 locals_index_wide(G3_scratch);
803 __ store_local_ptr(G3_scratch, Otos_i);
804 }
805
806
807 void TemplateTable::iastore() {
808 transition(itos, vtos);
809 __ pop_i(O2); // index
810 // Otos_i: val
811 // O3: array
812 __ index_check(O3, O2, LogBytesPerInt, G3_scratch, O2);
813 __ st(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_INT));
814 }
815
816
817 void TemplateTable::lastore() {
818 transition(ltos, vtos);
819 __ pop_i(O2); // index
820 // Otos_l: val
821 // O3: array
822 __ index_check(O3, O2, LogBytesPerLong, G3_scratch, O2);
823 __ st_long(Otos_l, O2, arrayOopDesc::base_offset_in_bytes(T_LONG));
824 }
825
826
827 void TemplateTable::fastore() {
828 transition(ftos, vtos);
829 __ pop_i(O2); // index
830 // Ftos_f: val
831 // O3: array
832 __ index_check(O3, O2, LogBytesPerInt, G3_scratch, O2);
833 __ stf(FloatRegisterImpl::S, Ftos_f, O2, arrayOopDesc::base_offset_in_bytes(T_FLOAT));
834 }
835
836
837 void TemplateTable::dastore() {
838 transition(dtos, vtos);
839 __ pop_i(O2); // index
840 // Fos_d: val
841 // O3: array
842 __ index_check(O3, O2, LogBytesPerLong, G3_scratch, O2);
843 __ stf(FloatRegisterImpl::D, Ftos_d, O2, arrayOopDesc::base_offset_in_bytes(T_DOUBLE));
844 }
845
846
847 void TemplateTable::aastore() {
848 Label store_ok, is_null, done;
849 transition(vtos, vtos);
850 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
851 __ ld(Lesp, Interpreter::expr_offset_in_bytes(1), O2); // get index
852 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(2), O3); // get array
853 // Otos_i: val
854 // O2: index
855 // O3: array
856 __ verify_oop(Otos_i);
857 __ index_check_without_pop(O3, O2, UseCompressedOops ? 2 : LogBytesPerWord, G3_scratch, O1);
858
859 // do array store check - check for NULL value first
860 __ br_null_short( Otos_i, Assembler::pn, is_null );
861
862 __ load_klass(O3, O4); // get array klass
863 __ load_klass(Otos_i, O5); // get value klass
864
865 // do fast instanceof cache test
866
867 __ ld_ptr(O4, in_bytes(ObjArrayKlass::element_klass_offset()), O4);
868
869 assert(Otos_i == O0, "just checking");
870
871 // Otos_i: value
872 // O1: addr - offset
873 // O2: index
874 // O3: array
875 // O4: array element klass
876 // O5: value klass
877
878 // Address element(O1, 0, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
879
880 // Generate a fast subtype check. Branch to store_ok if no
881 // failure. Throw if failure.
882 __ gen_subtype_check( O5, O4, G3_scratch, G4_scratch, G1_scratch, store_ok );
883
884 // Not a subtype; so must throw exception
885 __ throw_if_not_x( Assembler::never, Interpreter::_throw_ArrayStoreException_entry, G3_scratch );
886
887 // Store is OK.
888 __ bind(store_ok);
889 do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i, G3_scratch, _bs->kind(), true);
890
891 __ ba(done);
892 __ delayed()->inc(Lesp, 3* Interpreter::stackElementSize); // adj sp (pops array, index and value)
893
894 __ bind(is_null);
895 do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), G0, G4_scratch, _bs->kind(), true);
896
897 __ profile_null_seen(G3_scratch);
898 __ inc(Lesp, 3* Interpreter::stackElementSize); // adj sp (pops array, index and value)
899 __ bind(done);
900 }
901
902
903 void TemplateTable::bastore() {
904 transition(itos, vtos);
905 __ pop_i(O2); // index
906 // Otos_i: val
907 // O2: index
908 // O3: array
909 __ index_check(O3, O2, 0, G3_scratch, O2);
910 // Need to check whether array is boolean or byte
911 // since both types share the bastore bytecode.
912 __ load_klass(O3, G4_scratch);
913 __ ld(G4_scratch, in_bytes(Klass::layout_helper_offset()), G4_scratch);
914 __ set(Klass::layout_helper_boolean_diffbit(), G3_scratch);
915 __ andcc(G3_scratch, G4_scratch, G0);
916 Label L_skip;
917 __ br(Assembler::zero, false, Assembler::pn, L_skip);
918 __ delayed()->nop();
919 __ and3(Otos_i, 1, Otos_i); // if it is a T_BOOLEAN array, mask the stored value to 0/1
920 __ bind(L_skip);
921 __ stb(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_BYTE));
922 }
923
924
925 void TemplateTable::castore() {
926 transition(itos, vtos);
927 __ pop_i(O2); // index
928 // Otos_i: val
929 // O3: array
930 __ index_check(O3, O2, LogBytesPerShort, G3_scratch, O2);
931 __ sth(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_CHAR));
932 }
933
934
935 void TemplateTable::sastore() {
936 // %%%%% Factor across platform
937 castore();
938 }
939
940
941 void TemplateTable::istore(int n) {
942 transition(itos, vtos);
943 __ st(Otos_i, Llocals, Interpreter::local_offset_in_bytes(n));
944 }
945
946
947 void TemplateTable::lstore(int n) {
948 transition(ltos, vtos);
949 assert(n+1 < Argument::n_register_parameters, "only handle register cases");
950 __ store_unaligned_long(Otos_l, Llocals, Interpreter::local_offset_in_bytes(n+1));
951
952 }
953
954
955 void TemplateTable::fstore(int n) {
956 transition(ftos, vtos);
957 assert(n < Argument::n_register_parameters, "only handle register cases");
958 __ stf(FloatRegisterImpl::S, Ftos_f, Llocals, Interpreter::local_offset_in_bytes(n));
959 }
960
961
962 void TemplateTable::dstore(int n) {
963 transition(dtos, vtos);
964 FloatRegister src = Ftos_d;
965 __ store_unaligned_double(src, Llocals, Interpreter::local_offset_in_bytes(n+1));
966 }
967
968
969 void TemplateTable::astore(int n) {
970 transition(vtos, vtos);
971 __ load_ptr(0, Otos_i);
972 __ inc(Lesp, Interpreter::stackElementSize);
973 __ verify_oop_or_return_address(Otos_i, G3_scratch);
974 __ store_local_ptr(n, Otos_i);
975 }
976
977
978 void TemplateTable::pop() {
979 transition(vtos, vtos);
980 __ inc(Lesp, Interpreter::stackElementSize);
981 }
982
983
984 void TemplateTable::pop2() {
985 transition(vtos, vtos);
986 __ inc(Lesp, 2 * Interpreter::stackElementSize);
987 }
988
989
990 void TemplateTable::dup() {
991 transition(vtos, vtos);
992 // stack: ..., a
993 // load a and tag
994 __ load_ptr(0, Otos_i);
995 __ push_ptr(Otos_i);
996 // stack: ..., a, a
997 }
998
999
1000 void TemplateTable::dup_x1() {
1001 transition(vtos, vtos);
1002 // stack: ..., a, b
1003 __ load_ptr( 1, G3_scratch); // get a
1004 __ load_ptr( 0, Otos_l1); // get b
1005 __ store_ptr(1, Otos_l1); // put b
1006 __ store_ptr(0, G3_scratch); // put a - like swap
1007 __ push_ptr(Otos_l1); // push b
1008 // stack: ..., b, a, b
1009 }
1010
1011
1012 void TemplateTable::dup_x2() {
1013 transition(vtos, vtos);
1014 // stack: ..., a, b, c
1015 // get c and push on stack, reuse registers
1016 __ load_ptr( 0, G3_scratch); // get c
1017 __ push_ptr(G3_scratch); // push c with tag
1018 // stack: ..., a, b, c, c (c in reg) (Lesp - 4)
1019 // (stack offsets n+1 now)
1020 __ load_ptr( 3, Otos_l1); // get a
1021 __ store_ptr(3, G3_scratch); // put c at 3
1022 // stack: ..., c, b, c, c (a in reg)
1023 __ load_ptr( 2, G3_scratch); // get b
1024 __ store_ptr(2, Otos_l1); // put a at 2
1025 // stack: ..., c, a, c, c (b in reg)
1026 __ store_ptr(1, G3_scratch); // put b at 1
1027 // stack: ..., c, a, b, c
1028 }
1029
1030
1031 void TemplateTable::dup2() {
1032 transition(vtos, vtos);
1033 __ load_ptr(1, G3_scratch); // get a
1034 __ load_ptr(0, Otos_l1); // get b
1035 __ push_ptr(G3_scratch); // push a
1036 __ push_ptr(Otos_l1); // push b
1037 // stack: ..., a, b, a, b
1038 }
1039
1040
1041 void TemplateTable::dup2_x1() {
1042 transition(vtos, vtos);
1043 // stack: ..., a, b, c
1044 __ load_ptr( 1, Lscratch); // get b
1045 __ load_ptr( 2, Otos_l1); // get a
1046 __ store_ptr(2, Lscratch); // put b at a
1047 // stack: ..., b, b, c
1048 __ load_ptr( 0, G3_scratch); // get c
1049 __ store_ptr(1, G3_scratch); // put c at b
1050 // stack: ..., b, c, c
1051 __ store_ptr(0, Otos_l1); // put a at c
1052 // stack: ..., b, c, a
1053 __ push_ptr(Lscratch); // push b
1054 __ push_ptr(G3_scratch); // push c
1055 // stack: ..., b, c, a, b, c
1056 }
1057
1058
1059 // The spec says that these types can be a mixture of category 1 (1 word)
1060 // types and/or category 2 types (long and doubles)
1061 void TemplateTable::dup2_x2() {
1062 transition(vtos, vtos);
1063 // stack: ..., a, b, c, d
1064 __ load_ptr( 1, Lscratch); // get c
1065 __ load_ptr( 3, Otos_l1); // get a
1066 __ store_ptr(3, Lscratch); // put c at 3
1067 __ store_ptr(1, Otos_l1); // put a at 1
1068 // stack: ..., c, b, a, d
1069 __ load_ptr( 2, G3_scratch); // get b
1070 __ load_ptr( 0, Otos_l1); // get d
1071 __ store_ptr(0, G3_scratch); // put b at 0
1072 __ store_ptr(2, Otos_l1); // put d at 2
1073 // stack: ..., c, d, a, b
1074 __ push_ptr(Lscratch); // push c
1075 __ push_ptr(Otos_l1); // push d
1076 // stack: ..., c, d, a, b, c, d
1077 }
1078
1079
1080 void TemplateTable::swap() {
1081 transition(vtos, vtos);
1082 // stack: ..., a, b
1083 __ load_ptr( 1, G3_scratch); // get a
1084 __ load_ptr( 0, Otos_l1); // get b
1085 __ store_ptr(0, G3_scratch); // put b
1086 __ store_ptr(1, Otos_l1); // put a
1087 // stack: ..., b, a
1088 }
1089
1090
1091 void TemplateTable::iop2(Operation op) {
1092 transition(itos, itos);
1093 __ pop_i(O1);
1094 switch (op) {
1095 case add: __ add(O1, Otos_i, Otos_i); break;
1096 case sub: __ sub(O1, Otos_i, Otos_i); break;
1097 // %%%%% Mul may not exist: better to call .mul?
1098 case mul: __ smul(O1, Otos_i, Otos_i); break;
1099 case _and: __ and3(O1, Otos_i, Otos_i); break;
1100 case _or: __ or3(O1, Otos_i, Otos_i); break;
1101 case _xor: __ xor3(O1, Otos_i, Otos_i); break;
1102 case shl: __ sll(O1, Otos_i, Otos_i); break;
1103 case shr: __ sra(O1, Otos_i, Otos_i); break;
1104 case ushr: __ srl(O1, Otos_i, Otos_i); break;
1105 default: ShouldNotReachHere();
1106 }
1107 }
1108
1109
1110 void TemplateTable::lop2(Operation op) {
1111 transition(ltos, ltos);
1112 __ pop_l(O2);
1113 switch (op) {
1114 case add: __ add(O2, Otos_l, Otos_l); break;
1115 case sub: __ sub(O2, Otos_l, Otos_l); break;
1116 case _and: __ and3(O2, Otos_l, Otos_l); break;
1117 case _or: __ or3(O2, Otos_l, Otos_l); break;
1118 case _xor: __ xor3(O2, Otos_l, Otos_l); break;
1119 default: ShouldNotReachHere();
1120 }
1121 }
1122
1123
1124 void TemplateTable::idiv() {
1125 // %%%%% Later: ForSPARC/V7 call .sdiv library routine,
1126 // %%%%% Use ldsw...sdivx on pure V9 ABI. 64 bit safe.
1127
1128 transition(itos, itos);
1129 __ pop_i(O1); // get 1st op
1130
1131 // Y contains upper 32 bits of result, set it to 0 or all ones
1132 __ wry(G0);
1133 __ mov(~0, G3_scratch);
1134
1135 __ tst(O1);
1136 Label neg;
1137 __ br(Assembler::negative, true, Assembler::pn, neg);
1138 __ delayed()->wry(G3_scratch);
1139 __ bind(neg);
1140
1141 Label ok;
1142 __ tst(Otos_i);
1143 __ throw_if_not_icc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch );
1144
1145 const int min_int = 0x80000000;
1146 Label regular;
1147 __ cmp(Otos_i, -1);
1148 __ br(Assembler::notEqual, false, Assembler::pt, regular);
1149 // Don't put set in delay slot
1150 // Set will turn into multiple instructions in 64 bit mode
1151 __ delayed()->nop();
1152 __ set(min_int, G4_scratch);
1153 Label done;
1154 __ cmp(O1, G4_scratch);
1155 __ br(Assembler::equal, true, Assembler::pt, done);
1156 __ delayed()->mov(O1, Otos_i); // (mov only executed if branch taken)
1157
1158 __ bind(regular);
1159 __ sdiv(O1, Otos_i, Otos_i); // note: irem uses O1 after this instruction!
1160 __ bind(done);
1161 }
1162
1163
1164 void TemplateTable::irem() {
1165 transition(itos, itos);
1166 __ mov(Otos_i, O2); // save divisor
1167 idiv(); // %%%% Hack: exploits fact that idiv leaves dividend in O1
1168 __ smul(Otos_i, O2, Otos_i);
1169 __ sub(O1, Otos_i, Otos_i);
1170 }
1171
1172
1173 void TemplateTable::lmul() {
1174 transition(ltos, ltos);
1175 __ pop_l(O2);
1176 __ mulx(Otos_l, O2, Otos_l);
1177
1178 }
1179
1180
1181 void TemplateTable::ldiv() {
1182 transition(ltos, ltos);
1183
1184 // check for zero
1185 __ pop_l(O2);
1186 __ tst(Otos_l);
1187 __ throw_if_not_xcc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1188 __ sdivx(O2, Otos_l, Otos_l);
1189 }
1190
1191
1192 void TemplateTable::lrem() {
1193 transition(ltos, ltos);
1194
1195 // check for zero
1196 __ pop_l(O2);
1197 __ tst(Otos_l);
1198 __ throw_if_not_xcc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1199 __ sdivx(O2, Otos_l, Otos_l2);
1200 __ mulx (Otos_l2, Otos_l, Otos_l2);
1201 __ sub (O2, Otos_l2, Otos_l);
1202 }
1203
1204
1205 void TemplateTable::lshl() {
1206 transition(itos, ltos); // %%%% could optimize, fill delay slot or opt for ultra
1207
1208 __ pop_l(O2); // shift value in O2, O3
1209 __ sllx(O2, Otos_i, Otos_l);
1210 }
1211
1212
1213 void TemplateTable::lshr() {
1214 transition(itos, ltos); // %%%% see lshl comment
1215
1216 __ pop_l(O2); // shift value in O2, O3
1217 __ srax(O2, Otos_i, Otos_l);
1218 }
1219
1220
1221
1222 void TemplateTable::lushr() {
1223 transition(itos, ltos); // %%%% see lshl comment
1224
1225 __ pop_l(O2); // shift value in O2, O3
1226 __ srlx(O2, Otos_i, Otos_l);
1227 }
1228
1229
1230 void TemplateTable::fop2(Operation op) {
1231 transition(ftos, ftos);
1232 switch (op) {
1233 case add: __ pop_f(F4); __ fadd(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1234 case sub: __ pop_f(F4); __ fsub(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1235 case mul: __ pop_f(F4); __ fmul(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1236 case div: __ pop_f(F4); __ fdiv(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1237 case rem:
1238 assert(Ftos_f == F0, "just checking");
1239 // LP64 calling conventions use F1, F3 for passing 2 floats
1240 __ pop_f(F1);
1241 __ fmov(FloatRegisterImpl::S, Ftos_f, F3);
1242 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::frem));
1243 assert( Ftos_f == F0, "fix this code" );
1244 break;
1245
1246 default: ShouldNotReachHere();
1247 }
1248 }
1249
1250
1251 void TemplateTable::dop2(Operation op) {
1252 transition(dtos, dtos);
1253 switch (op) {
1254 case add: __ pop_d(F4); __ fadd(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1255 case sub: __ pop_d(F4); __ fsub(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1256 case mul: __ pop_d(F4); __ fmul(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1257 case div: __ pop_d(F4); __ fdiv(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1258 case rem:
1259 // Pass arguments in D0, D2
1260 __ fmov(FloatRegisterImpl::D, Ftos_f, F2 );
1261 __ pop_d( F0 );
1262 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::drem));
1263 assert( Ftos_d == F0, "fix this code" );
1264 break;
1265
1266 default: ShouldNotReachHere();
1267 }
1268 }
1269
1270
1271 void TemplateTable::ineg() {
1272 transition(itos, itos);
1273 __ neg(Otos_i);
1274 }
1275
1276
1277 void TemplateTable::lneg() {
1278 transition(ltos, ltos);
1279 __ sub(G0, Otos_l, Otos_l);
1280 }
1281
1282
1283 void TemplateTable::fneg() {
1284 transition(ftos, ftos);
1285 __ fneg(FloatRegisterImpl::S, Ftos_f, Ftos_f);
1286 }
1287
1288
1289 void TemplateTable::dneg() {
1290 transition(dtos, dtos);
1291 __ fneg(FloatRegisterImpl::D, Ftos_f, Ftos_f);
1292 }
1293
1294
1295 void TemplateTable::iinc() {
1296 transition(vtos, vtos);
1297 locals_index(G3_scratch);
1298 __ ldsb(Lbcp, 2, O2); // load constant
1299 __ access_local_int(G3_scratch, Otos_i);
1300 __ add(Otos_i, O2, Otos_i);
1301 __ st(Otos_i, G3_scratch, 0); // access_local_int puts E.A. in G3_scratch
1302 }
1303
1304
1305 void TemplateTable::wide_iinc() {
1306 transition(vtos, vtos);
1307 locals_index_wide(G3_scratch);
1308 __ get_2_byte_integer_at_bcp( 4, O2, O3, InterpreterMacroAssembler::Signed);
1309 __ access_local_int(G3_scratch, Otos_i);
1310 __ add(Otos_i, O3, Otos_i);
1311 __ st(Otos_i, G3_scratch, 0); // access_local_int puts E.A. in G3_scratch
1312 }
1313
1314
1315 void TemplateTable::convert() {
1316 // %%%%% Factor this first part accross platforms
1317 #ifdef ASSERT
1318 TosState tos_in = ilgl;
1319 TosState tos_out = ilgl;
1320 switch (bytecode()) {
1321 case Bytecodes::_i2l: // fall through
1322 case Bytecodes::_i2f: // fall through
1323 case Bytecodes::_i2d: // fall through
1324 case Bytecodes::_i2b: // fall through
1325 case Bytecodes::_i2c: // fall through
1326 case Bytecodes::_i2s: tos_in = itos; break;
1327 case Bytecodes::_l2i: // fall through
1328 case Bytecodes::_l2f: // fall through
1329 case Bytecodes::_l2d: tos_in = ltos; break;
1330 case Bytecodes::_f2i: // fall through
1331 case Bytecodes::_f2l: // fall through
1332 case Bytecodes::_f2d: tos_in = ftos; break;
1333 case Bytecodes::_d2i: // fall through
1334 case Bytecodes::_d2l: // fall through
1335 case Bytecodes::_d2f: tos_in = dtos; break;
1336 default : ShouldNotReachHere();
1337 }
1338 switch (bytecode()) {
1339 case Bytecodes::_l2i: // fall through
1340 case Bytecodes::_f2i: // fall through
1341 case Bytecodes::_d2i: // fall through
1342 case Bytecodes::_i2b: // fall through
1343 case Bytecodes::_i2c: // fall through
1344 case Bytecodes::_i2s: tos_out = itos; break;
1345 case Bytecodes::_i2l: // fall through
1346 case Bytecodes::_f2l: // fall through
1347 case Bytecodes::_d2l: tos_out = ltos; break;
1348 case Bytecodes::_i2f: // fall through
1349 case Bytecodes::_l2f: // fall through
1350 case Bytecodes::_d2f: tos_out = ftos; break;
1351 case Bytecodes::_i2d: // fall through
1352 case Bytecodes::_l2d: // fall through
1353 case Bytecodes::_f2d: tos_out = dtos; break;
1354 default : ShouldNotReachHere();
1355 }
1356 transition(tos_in, tos_out);
1357 #endif
1358
1359
1360 // Conversion
1361 Label done;
1362 switch (bytecode()) {
1363 case Bytecodes::_i2l:
1364 // Sign extend the 32 bits
1365 __ sra ( Otos_i, 0, Otos_l );
1366 break;
1367
1368 case Bytecodes::_i2f:
1369 __ st(Otos_i, __ d_tmp );
1370 __ ldf(FloatRegisterImpl::S, __ d_tmp, F0);
1371 __ fitof(FloatRegisterImpl::S, F0, Ftos_f);
1372 break;
1373
1374 case Bytecodes::_i2d:
1375 __ st(Otos_i, __ d_tmp);
1376 __ ldf(FloatRegisterImpl::S, __ d_tmp, F0);
1377 __ fitof(FloatRegisterImpl::D, F0, Ftos_f);
1378 break;
1379
1380 case Bytecodes::_i2b:
1381 __ sll(Otos_i, 24, Otos_i);
1382 __ sra(Otos_i, 24, Otos_i);
1383 break;
1384
1385 case Bytecodes::_i2c:
1386 __ sll(Otos_i, 16, Otos_i);
1387 __ srl(Otos_i, 16, Otos_i);
1388 break;
1389
1390 case Bytecodes::_i2s:
1391 __ sll(Otos_i, 16, Otos_i);
1392 __ sra(Otos_i, 16, Otos_i);
1393 break;
1394
1395 case Bytecodes::_l2i:
1396 // Sign-extend into the high 32 bits
1397 __ sra(Otos_l, 0, Otos_i);
1398 break;
1399
1400 case Bytecodes::_l2f:
1401 case Bytecodes::_l2d:
1402 __ st_long(Otos_l, __ d_tmp);
1403 __ ldf(FloatRegisterImpl::D, __ d_tmp, Ftos_d);
1404
1405 if (bytecode() == Bytecodes::_l2f) {
1406 __ fxtof(FloatRegisterImpl::S, Ftos_d, Ftos_f);
1407 } else {
1408 __ fxtof(FloatRegisterImpl::D, Ftos_d, Ftos_d);
1409 }
1410 break;
1411
1412 case Bytecodes::_f2i: {
1413 Label isNaN;
1414 // result must be 0 if value is NaN; test by comparing value to itself
1415 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, Ftos_f, Ftos_f);
1416 __ fb(Assembler::f_unordered, true, Assembler::pn, isNaN);
1417 __ delayed()->clr(Otos_i); // NaN
1418 __ ftoi(FloatRegisterImpl::S, Ftos_f, F30);
1419 __ stf(FloatRegisterImpl::S, F30, __ d_tmp);
1420 __ ld(__ d_tmp, Otos_i);
1421 __ bind(isNaN);
1422 }
1423 break;
1424
1425 case Bytecodes::_f2l:
1426 // must uncache tos
1427 __ push_f();
1428 __ pop_f(F1);
1429 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::f2l));
1430 break;
1431
1432 case Bytecodes::_f2d:
1433 __ ftof( FloatRegisterImpl::S, FloatRegisterImpl::D, Ftos_f, Ftos_f);
1434 break;
1435
1436 case Bytecodes::_d2i:
1437 case Bytecodes::_d2l:
1438 // must uncache tos
1439 __ push_d();
1440 // LP64 calling conventions pass first double arg in D0
1441 __ pop_d( Ftos_d );
1442 __ call_VM_leaf(Lscratch,
1443 bytecode() == Bytecodes::_d2i
1444 ? CAST_FROM_FN_PTR(address, SharedRuntime::d2i)
1445 : CAST_FROM_FN_PTR(address, SharedRuntime::d2l));
1446 break;
1447
1448 case Bytecodes::_d2f:
1449 __ ftof( FloatRegisterImpl::D, FloatRegisterImpl::S, Ftos_d, Ftos_f);
1450 break;
1451
1452 default: ShouldNotReachHere();
1453 }
1454 __ bind(done);
1455 }
1456
1457
1458 void TemplateTable::lcmp() {
1459 transition(ltos, itos);
1460
1461 __ pop_l(O1); // pop off value 1, value 2 is in O0
1462 __ lcmp( O1, Otos_l, Otos_i );
1463 }
1464
1465
1466 void TemplateTable::float_cmp(bool is_float, int unordered_result) {
1467
1468 if (is_float) __ pop_f(F2);
1469 else __ pop_d(F2);
1470
1471 assert(Ftos_f == F0 && Ftos_d == F0, "alias checking:");
1472
1473 __ float_cmp( is_float, unordered_result, F2, F0, Otos_i );
1474 }
1475
1476 void TemplateTable::branch(bool is_jsr, bool is_wide) {
1477 // Note: on SPARC, we use InterpreterMacroAssembler::if_cmp also.
1478 __ verify_thread();
1479
1480 const Register O2_bumped_count = O2;
1481 __ profile_taken_branch(G3_scratch, O2_bumped_count);
1482
1483 // get (wide) offset to O1_disp
1484 const Register O1_disp = O1;
1485 if (is_wide) __ get_4_byte_integer_at_bcp( 1, G4_scratch, O1_disp, InterpreterMacroAssembler::set_CC);
1486 else __ get_2_byte_integer_at_bcp( 1, G4_scratch, O1_disp, InterpreterMacroAssembler::Signed, InterpreterMacroAssembler::set_CC);
1487
1488 // Handle all the JSR stuff here, then exit.
1489 // It's much shorter and cleaner than intermingling with the
1490 // non-JSR normal-branch stuff occurring below.
1491 if( is_jsr ) {
1492 // compute return address as bci in Otos_i
1493 __ ld_ptr(Lmethod, Method::const_offset(), G3_scratch);
1494 __ sub(Lbcp, G3_scratch, G3_scratch);
1495 __ sub(G3_scratch, in_bytes(ConstMethod::codes_offset()) - (is_wide ? 5 : 3), Otos_i);
1496
1497 // Bump Lbcp to target of JSR
1498 __ add(Lbcp, O1_disp, Lbcp);
1499 // Push returnAddress for "ret" on stack
1500 __ push_ptr(Otos_i);
1501 // And away we go!
1502 __ dispatch_next(vtos, 0, true);
1503 return;
1504 }
1505
1506 // Normal (non-jsr) branch handling
1507
1508 // Save the current Lbcp
1509 const Register l_cur_bcp = Lscratch;
1510 __ mov( Lbcp, l_cur_bcp );
1511
1512 bool increment_invocation_counter_for_backward_branches = UseCompiler && UseLoopCounter;
1513 if ( increment_invocation_counter_for_backward_branches ) {
1514 Label Lforward;
1515 // check branch direction
1516 __ br( Assembler::positive, false, Assembler::pn, Lforward );
1517 // Bump bytecode pointer by displacement (take the branch)
1518 __ delayed()->add( O1_disp, Lbcp, Lbcp ); // add to bc addr
1519
1520 const Register G3_method_counters = G3_scratch;
1521 __ get_method_counters(Lmethod, G3_method_counters, Lforward);
1522
1523 if (TieredCompilation) {
1524 Label Lno_mdo, Loverflow;
1525 int increment = InvocationCounter::count_increment;
1526 if (ProfileInterpreter) {
1527 // If no method data exists, go to profile_continue.
1528 __ ld_ptr(Lmethod, Method::method_data_offset(), G4_scratch);
1529 __ br_null_short(G4_scratch, Assembler::pn, Lno_mdo);
1530
1531 // Increment backedge counter in the MDO
1532 Address mdo_backedge_counter(G4_scratch, in_bytes(MethodData::backedge_counter_offset()) +
1533 in_bytes(InvocationCounter::counter_offset()));
1534 Address mask(G4_scratch, in_bytes(MethodData::backedge_mask_offset()));
1535 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, G3_scratch, O0,
1536 (UseOnStackReplacement ? Assembler::notZero : Assembler::always), &Lforward);
1537 __ ba_short(Loverflow);
1538 }
1539
1540 // If there's no MDO, increment counter in MethodCounters*
1541 __ bind(Lno_mdo);
1542 Address backedge_counter(G3_method_counters,
1543 in_bytes(MethodCounters::backedge_counter_offset()) +
1544 in_bytes(InvocationCounter::counter_offset()));
1545 Address mask(G3_method_counters, in_bytes(MethodCounters::backedge_mask_offset()));
1546 __ increment_mask_and_jump(backedge_counter, increment, mask, G4_scratch, O0,
1547 (UseOnStackReplacement ? Assembler::notZero : Assembler::always), &Lforward);
1548 __ bind(Loverflow);
1549
1550 // notify point for loop, pass branch bytecode
1551 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), l_cur_bcp);
1552
1553 // Was an OSR adapter generated?
1554 // O0 = osr nmethod
1555 __ br_null_short(O0, Assembler::pn, Lforward);
1556
1557 // Has the nmethod been invalidated already?
1558 __ ldub(O0, nmethod::state_offset(), O2);
1559 __ cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, Lforward);
1560
1561 // migrate the interpreter frame off of the stack
1562
1563 __ mov(G2_thread, L7);
1564 // save nmethod
1565 __ mov(O0, L6);
1566 __ set_last_Java_frame(SP, noreg);
1567 __ call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7);
1568 __ reset_last_Java_frame();
1569 __ mov(L7, G2_thread);
1570
1571 // move OSR nmethod to I1
1572 __ mov(L6, I1);
1573
1574 // OSR buffer to I0
1575 __ mov(O0, I0);
1576
1577 // remove the interpreter frame
1578 __ restore(I5_savedSP, 0, SP);
1579
1580 // Jump to the osr code.
1581 __ ld_ptr(O1, nmethod::osr_entry_point_offset(), O2);
1582 __ jmp(O2, G0);
1583 __ delayed()->nop();
1584
1585 } else { // not TieredCompilation
1586 // Update Backedge branch separately from invocations
1587 const Register G4_invoke_ctr = G4;
1588 __ increment_backedge_counter(G3_method_counters, G4_invoke_ctr, G1_scratch);
1589 if (ProfileInterpreter) {
1590 __ test_invocation_counter_for_mdp(G4_invoke_ctr, G3_method_counters, G1_scratch, Lforward);
1591 if (UseOnStackReplacement) {
1592
1593 __ test_backedge_count_for_osr(O2_bumped_count, G3_method_counters, l_cur_bcp, G1_scratch);
1594 }
1595 } else {
1596 if (UseOnStackReplacement) {
1597 __ test_backedge_count_for_osr(G4_invoke_ctr, G3_method_counters, l_cur_bcp, G1_scratch);
1598 }
1599 }
1600 }
1601
1602 __ bind(Lforward);
1603 } else
1604 // Bump bytecode pointer by displacement (take the branch)
1605 __ add( O1_disp, Lbcp, Lbcp );// add to bc addr
1606
1607 // continue with bytecode @ target
1608 // %%%%% Like Intel, could speed things up by moving bytecode fetch to code above,
1609 // %%%%% and changing dispatch_next to dispatch_only
1610 __ dispatch_next(vtos, 0, true);
1611 }
1612
1613
1614 // Note Condition in argument is TemplateTable::Condition
1615 // arg scope is within class scope
1616
1617 void TemplateTable::if_0cmp(Condition cc) {
1618 // no pointers, integer only!
1619 transition(itos, vtos);
1620 // assume branch is more often taken than not (loops use backward branches)
1621 __ cmp( Otos_i, 0);
1622 __ if_cmp(ccNot(cc), false);
1623 }
1624
1625
1626 void TemplateTable::if_icmp(Condition cc) {
1627 transition(itos, vtos);
1628 __ pop_i(O1);
1629 __ cmp(O1, Otos_i);
1630 __ if_cmp(ccNot(cc), false);
1631 }
1632
1633
1634 void TemplateTable::if_nullcmp(Condition cc) {
1635 transition(atos, vtos);
1636 __ tst(Otos_i);
1637 __ if_cmp(ccNot(cc), true);
1638 }
1639
1640
1641 void TemplateTable::if_acmp(Condition cc) {
1642 transition(atos, vtos);
1643 __ pop_ptr(O1);
1644 __ verify_oop(O1);
1645 __ verify_oop(Otos_i);
1646 __ cmp(O1, Otos_i);
1647 __ if_cmp(ccNot(cc), true);
1648 }
1649
1650
1651
1652 void TemplateTable::ret() {
1653 transition(vtos, vtos);
1654 locals_index(G3_scratch);
1655 __ access_local_returnAddress(G3_scratch, Otos_i);
1656 // Otos_i contains the bci, compute the bcp from that
1657
1658 #ifdef ASSERT
1659 // jsr result was labeled as an 'itos' not an 'atos' because we cannot GC
1660 // the result. The return address (really a BCI) was stored with an
1661 // 'astore' because JVM specs claim it's a pointer-sized thing. Hence in
1662 // the 64-bit build the 32-bit BCI is actually in the low bits of a 64-bit
1663 // loaded value.
1664 { Label zzz ;
1665 __ set (65536, G3_scratch) ;
1666 __ cmp (Otos_i, G3_scratch) ;
1667 __ bp( Assembler::lessEqualUnsigned, false, Assembler::xcc, Assembler::pn, zzz);
1668 __ delayed()->nop();
1669 __ stop("BCI is in the wrong register half?");
1670 __ bind (zzz) ;
1671 }
1672 #endif
1673
1674 __ profile_ret(vtos, Otos_i, G4_scratch);
1675
1676 __ ld_ptr(Lmethod, Method::const_offset(), G3_scratch);
1677 __ add(G3_scratch, Otos_i, G3_scratch);
1678 __ add(G3_scratch, in_bytes(ConstMethod::codes_offset()), Lbcp);
1679 __ dispatch_next(vtos, 0, true);
1680 }
1681
1682
1683 void TemplateTable::wide_ret() {
1684 transition(vtos, vtos);
1685 locals_index_wide(G3_scratch);
1686 __ access_local_returnAddress(G3_scratch, Otos_i);
1687 // Otos_i contains the bci, compute the bcp from that
1688
1689 __ profile_ret(vtos, Otos_i, G4_scratch);
1690
1691 __ ld_ptr(Lmethod, Method::const_offset(), G3_scratch);
1692 __ add(G3_scratch, Otos_i, G3_scratch);
1693 __ add(G3_scratch, in_bytes(ConstMethod::codes_offset()), Lbcp);
1694 __ dispatch_next(vtos, 0, true);
1695 }
1696
1697
1698 void TemplateTable::tableswitch() {
1699 transition(itos, vtos);
1700 Label default_case, continue_execution;
1701
1702 // align bcp
1703 __ add(Lbcp, BytesPerInt, O1);
1704 __ and3(O1, -BytesPerInt, O1);
1705 // load lo, hi
1706 __ ld(O1, 1 * BytesPerInt, O2); // Low Byte
1707 __ ld(O1, 2 * BytesPerInt, O3); // High Byte
1708 // Sign extend the 32 bits
1709 __ sra ( Otos_i, 0, Otos_i );
1710
1711 // check against lo & hi
1712 __ cmp( Otos_i, O2);
1713 __ br( Assembler::less, false, Assembler::pn, default_case);
1714 __ delayed()->cmp( Otos_i, O3 );
1715 __ br( Assembler::greater, false, Assembler::pn, default_case);
1716 // lookup dispatch offset
1717 __ delayed()->sub(Otos_i, O2, O2);
1718 __ profile_switch_case(O2, O3, G3_scratch, G4_scratch);
1719 __ sll(O2, LogBytesPerInt, O2);
1720 __ add(O2, 3 * BytesPerInt, O2);
1721 __ ba(continue_execution);
1722 __ delayed()->ld(O1, O2, O2);
1723 // handle default
1724 __ bind(default_case);
1725 __ profile_switch_default(O3);
1726 __ ld(O1, 0, O2); // get default offset
1727 // continue execution
1728 __ bind(continue_execution);
1729 __ add(Lbcp, O2, Lbcp);
1730 __ dispatch_next(vtos, 0, true);
1731 }
1732
1733
1734 void TemplateTable::lookupswitch() {
1735 transition(itos, itos);
1736 __ stop("lookupswitch bytecode should have been rewritten");
1737 }
1738
1739 void TemplateTable::fast_linearswitch() {
1740 transition(itos, vtos);
1741 Label loop_entry, loop, found, continue_execution;
1742 // align bcp
1743 __ add(Lbcp, BytesPerInt, O1);
1744 __ and3(O1, -BytesPerInt, O1);
1745 // set counter
1746 __ ld(O1, BytesPerInt, O2);
1747 __ sll(O2, LogBytesPerInt + 1, O2); // in word-pairs
1748 __ add(O1, 2 * BytesPerInt, O3); // set first pair addr
1749 __ ba(loop_entry);
1750 __ delayed()->add(O3, O2, O2); // counter now points past last pair
1751
1752 // table search
1753 __ bind(loop);
1754 __ cmp(O4, Otos_i);
1755 __ br(Assembler::equal, true, Assembler::pn, found);
1756 __ delayed()->ld(O3, BytesPerInt, O4); // offset -> O4
1757 __ inc(O3, 2 * BytesPerInt);
1758
1759 __ bind(loop_entry);
1760 __ cmp(O2, O3);
1761 __ brx(Assembler::greaterUnsigned, true, Assembler::pt, loop);
1762 __ delayed()->ld(O3, 0, O4);
1763
1764 // default case
1765 __ ld(O1, 0, O4); // get default offset
1766 if (ProfileInterpreter) {
1767 __ profile_switch_default(O3);
1768 __ ba_short(continue_execution);
1769 }
1770
1771 // entry found -> get offset
1772 __ bind(found);
1773 if (ProfileInterpreter) {
1774 __ sub(O3, O1, O3);
1775 __ sub(O3, 2*BytesPerInt, O3);
1776 __ srl(O3, LogBytesPerInt + 1, O3); // in word-pairs
1777 __ profile_switch_case(O3, O1, O2, G3_scratch);
1778
1779 __ bind(continue_execution);
1780 }
1781 __ add(Lbcp, O4, Lbcp);
1782 __ dispatch_next(vtos, 0, true);
1783 }
1784
1785
1786 void TemplateTable::fast_binaryswitch() {
1787 transition(itos, vtos);
1788 // Implementation using the following core algorithm: (copied from Intel)
1789 //
1790 // int binary_search(int key, LookupswitchPair* array, int n) {
1791 // // Binary search according to "Methodik des Programmierens" by
1792 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
1793 // int i = 0;
1794 // int j = n;
1795 // while (i+1 < j) {
1796 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
1797 // // with Q: for all i: 0 <= i < n: key < a[i]
1798 // // where a stands for the array and assuming that the (inexisting)
1799 // // element a[n] is infinitely big.
1800 // int h = (i + j) >> 1;
1801 // // i < h < j
1802 // if (key < array[h].fast_match()) {
1803 // j = h;
1804 // } else {
1805 // i = h;
1806 // }
1807 // }
1808 // // R: a[i] <= key < a[i+1] or Q
1809 // // (i.e., if key is within array, i is the correct index)
1810 // return i;
1811 // }
1812
1813 // register allocation
1814 assert(Otos_i == O0, "alias checking");
1815 const Register Rkey = Otos_i; // already set (tosca)
1816 const Register Rarray = O1;
1817 const Register Ri = O2;
1818 const Register Rj = O3;
1819 const Register Rh = O4;
1820 const Register Rscratch = O5;
1821
1822 const int log_entry_size = 3;
1823 const int entry_size = 1 << log_entry_size;
1824
1825 Label found;
1826 // Find Array start
1827 __ add(Lbcp, 3 * BytesPerInt, Rarray);
1828 __ and3(Rarray, -BytesPerInt, Rarray);
1829 // initialize i & j (in delay slot)
1830 __ clr( Ri );
1831
1832 // and start
1833 Label entry;
1834 __ ba(entry);
1835 __ delayed()->ld( Rarray, -BytesPerInt, Rj);
1836 // (Rj is already in the native byte-ordering.)
1837
1838 // binary search loop
1839 { Label loop;
1840 __ bind( loop );
1841 // int h = (i + j) >> 1;
1842 __ sra( Rh, 1, Rh );
1843 // if (key < array[h].fast_match()) {
1844 // j = h;
1845 // } else {
1846 // i = h;
1847 // }
1848 __ sll( Rh, log_entry_size, Rscratch );
1849 __ ld( Rarray, Rscratch, Rscratch );
1850 // (Rscratch is already in the native byte-ordering.)
1851 __ cmp( Rkey, Rscratch );
1852 __ movcc( Assembler::less, false, Assembler::icc, Rh, Rj ); // j = h if (key < array[h].fast_match())
1853 __ movcc( Assembler::greaterEqual, false, Assembler::icc, Rh, Ri ); // i = h if (key >= array[h].fast_match())
1854
1855 // while (i+1 < j)
1856 __ bind( entry );
1857 __ add( Ri, 1, Rscratch );
1858 __ cmp(Rscratch, Rj);
1859 __ br( Assembler::less, true, Assembler::pt, loop );
1860 __ delayed()->add( Ri, Rj, Rh ); // start h = i + j >> 1;
1861 }
1862
1863 // end of binary search, result index is i (must check again!)
1864 Label default_case;
1865 Label continue_execution;
1866 if (ProfileInterpreter) {
1867 __ mov( Ri, Rh ); // Save index in i for profiling
1868 }
1869 __ sll( Ri, log_entry_size, Ri );
1870 __ ld( Rarray, Ri, Rscratch );
1871 // (Rscratch is already in the native byte-ordering.)
1872 __ cmp( Rkey, Rscratch );
1873 __ br( Assembler::notEqual, true, Assembler::pn, default_case );
1874 __ delayed()->ld( Rarray, -2 * BytesPerInt, Rj ); // load default offset -> j
1875
1876 // entry found -> j = offset
1877 __ inc( Ri, BytesPerInt );
1878 __ profile_switch_case(Rh, Rj, Rscratch, Rkey);
1879 __ ld( Rarray, Ri, Rj );
1880 // (Rj is already in the native byte-ordering.)
1881
1882 if (ProfileInterpreter) {
1883 __ ba_short(continue_execution);
1884 }
1885
1886 __ bind(default_case); // fall through (if not profiling)
1887 __ profile_switch_default(Ri);
1888
1889 __ bind(continue_execution);
1890 __ add( Lbcp, Rj, Lbcp );
1891 __ dispatch_next(vtos, 0, true);
1892 }
1893
1894
1895 void TemplateTable::_return(TosState state) {
1896 transition(state, state);
1897 assert(_desc->calls_vm(), "inconsistent calls_vm information");
1898
1899 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
1900 assert(state == vtos, "only valid state");
1901 __ mov(G0, G3_scratch);
1902 __ access_local_ptr(G3_scratch, Otos_i);
1903 __ load_klass(Otos_i, O2);
1904 __ set(JVM_ACC_HAS_FINALIZER, G3);
1905 __ ld(O2, in_bytes(Klass::access_flags_offset()), O2);
1906 __ andcc(G3, O2, G0);
1907 Label skip_register_finalizer;
1908 __ br(Assembler::zero, false, Assembler::pn, skip_register_finalizer);
1909 __ delayed()->nop();
1910
1911 // Call out to do finalizer registration
1912 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), Otos_i);
1913
1914 __ bind(skip_register_finalizer);
1915 }
1916
1917 if (SafepointMechanism::uses_thread_local_poll() && _desc->bytecode() != Bytecodes::_return_register_finalizer) {
1918 Label no_safepoint;
1919 __ ldx(Address(G2_thread, Thread::polling_page_offset()), G3_scratch, 0);
1920 __ btst(SafepointMechanism::poll_bit(), G3_scratch);
1921 __ br(Assembler::zero, false, Assembler::pt, no_safepoint);
1922 __ delayed()->nop();
1923 __ push(state);
1924 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint));
1925 __ pop(state);
1926 __ bind(no_safepoint);
1927 }
1928
1929 // Narrow result if state is itos but result type is smaller.
1930 // Need to narrow in the return bytecode rather than in generate_return_entry
1931 // since compiled code callers expect the result to already be narrowed.
1932 if (state == itos) {
1933 __ narrow(Otos_i);
1934 }
1935 __ remove_activation(state, /* throw_monitor_exception */ true);
1936
1937 // The caller's SP was adjusted upon method entry to accomodate
1938 // the callee's non-argument locals. Undo that adjustment.
1939 __ ret(); // return to caller
1940 __ delayed()->restore(I5_savedSP, G0, SP);
1941 }
1942
1943
1944 // ----------------------------------------------------------------------------
1945 // Volatile variables demand their effects be made known to all CPU's in
1946 // order. Store buffers on most chips allow reads & writes to reorder; the
1947 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of
1948 // memory barrier (i.e., it's not sufficient that the interpreter does not
1949 // reorder volatile references, the hardware also must not reorder them).
1950 //
1951 // According to the new Java Memory Model (JMM):
1952 // (1) All volatiles are serialized wrt to each other.
1953 // ALSO reads & writes act as aquire & release, so:
1954 // (2) A read cannot let unrelated NON-volatile memory refs that happen after
1955 // the read float up to before the read. It's OK for non-volatile memory refs
1956 // that happen before the volatile read to float down below it.
1957 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs
1958 // that happen BEFORE the write float down to after the write. It's OK for
1959 // non-volatile memory refs that happen after the volatile write to float up
1960 // before it.
1961 //
1962 // We only put in barriers around volatile refs (they are expensive), not
1963 // _between_ memory refs (that would require us to track the flavor of the
1964 // previous memory refs). Requirements (2) and (3) require some barriers
1965 // before volatile stores and after volatile loads. These nearly cover
1966 // requirement (1) but miss the volatile-store-volatile-load case. This final
1967 // case is placed after volatile-stores although it could just as well go
1968 // before volatile-loads.
1969 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint) {
1970 // Helper function to insert a is-volatile test and memory barrier
1971 // All current sparc implementations run in TSO, needing only StoreLoad
1972 if ((order_constraint & Assembler::StoreLoad) == 0) return;
1973 __ membar( order_constraint );
1974 }
1975
1976 // ----------------------------------------------------------------------------
1977 void TemplateTable::resolve_cache_and_index(int byte_no,
1978 Register Rcache,
1979 Register index,
1980 size_t index_size) {
1981 // Depends on cpCacheOop layout!
1982
1983 Label resolved;
1984 Bytecodes::Code code = bytecode();
1985 switch (code) {
1986 case Bytecodes::_nofast_getfield: code = Bytecodes::_getfield; break;
1987 case Bytecodes::_nofast_putfield: code = Bytecodes::_putfield; break;
1988 }
1989
1990 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
1991 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, Lbyte_code, byte_no, 1, index_size);
1992 __ cmp(Lbyte_code, code); // have we resolved this bytecode?
1993 __ br(Assembler::equal, false, Assembler::pt, resolved);
1994 __ delayed()->set(code, O1);
1995
1996 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_from_cache);
1997 // first time invocation - must resolve first
1998 __ call_VM(noreg, entry, O1);
1999 // Update registers with resolved info
2000 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
2001 __ bind(resolved);
2002 }
2003
2004 void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
2005 Register method,
2006 Register itable_index,
2007 Register flags,
2008 bool is_invokevirtual,
2009 bool is_invokevfinal,
2010 bool is_invokedynamic) {
2011 // Uses both G3_scratch and G4_scratch
2012 Register cache = G3_scratch;
2013 Register index = G4_scratch;
2014 assert_different_registers(cache, method, itable_index);
2015
2016 // determine constant pool cache field offsets
2017 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant");
2018 const int method_offset = in_bytes(
2019 ConstantPoolCache::base_offset() +
2020 ((byte_no == f2_byte)
2021 ? ConstantPoolCacheEntry::f2_offset()
2022 : ConstantPoolCacheEntry::f1_offset()
2023 )
2024 );
2025 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() +
2026 ConstantPoolCacheEntry::flags_offset());
2027 // access constant pool cache fields
2028 const int index_offset = in_bytes(ConstantPoolCache::base_offset() +
2029 ConstantPoolCacheEntry::f2_offset());
2030
2031 if (is_invokevfinal) {
2032 __ get_cache_and_index_at_bcp(cache, index, 1);
2033 __ ld_ptr(Address(cache, method_offset), method);
2034 } else {
2035 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2));
2036 resolve_cache_and_index(byte_no, cache, index, index_size);
2037 __ ld_ptr(Address(cache, method_offset), method);
2038 }
2039
2040 if (itable_index != noreg) {
2041 // pick up itable or appendix index from f2 also:
2042 __ ld_ptr(Address(cache, index_offset), itable_index);
2043 }
2044 __ ld_ptr(Address(cache, flags_offset), flags);
2045 }
2046
2047 // The Rcache register must be set before call
2048 void TemplateTable::load_field_cp_cache_entry(Register Robj,
2049 Register Rcache,
2050 Register index,
2051 Register Roffset,
2052 Register Rflags,
2053 bool is_static) {
2054 assert_different_registers(Rcache, Rflags, Roffset);
2055
2056 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2057
2058 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2059 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2060 if (is_static) {
2061 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f1_offset(), Robj);
2062 const int mirror_offset = in_bytes(Klass::java_mirror_offset());
2063 __ ld_ptr( Robj, mirror_offset, Robj);
2064 __ resolve_oop_handle(Robj);
2065 }
2066 }
2067
2068 // The registers Rcache and index expected to be set before call.
2069 // Correct values of the Rcache and index registers are preserved.
2070 void TemplateTable::jvmti_post_field_access(Register Rcache,
2071 Register index,
2072 bool is_static,
2073 bool has_tos) {
2074 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2075
2076 if (JvmtiExport::can_post_field_access()) {
2077 // Check to see if a field access watch has been set before we take
2078 // the time to call into the VM.
2079 Label Label1;
2080 assert_different_registers(Rcache, index, G1_scratch);
2081 AddressLiteral get_field_access_count_addr(JvmtiExport::get_field_access_count_addr());
2082 __ load_contents(get_field_access_count_addr, G1_scratch);
2083 __ cmp_and_br_short(G1_scratch, 0, Assembler::equal, Assembler::pt, Label1);
2084
2085 __ add(Rcache, in_bytes(cp_base_offset), Rcache);
2086
2087 if (is_static) {
2088 __ clr(Otos_i);
2089 } else {
2090 if (has_tos) {
2091 // save object pointer before call_VM() clobbers it
2092 __ push_ptr(Otos_i); // put object on tos where GC wants it.
2093 } else {
2094 // Load top of stack (do not pop the value off the stack);
2095 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
2096 }
2097 __ verify_oop(Otos_i);
2098 }
2099 // Otos_i: object pointer or NULL if static
2100 // Rcache: cache entry pointer
2101 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
2102 Otos_i, Rcache);
2103 if (!is_static && has_tos) {
2104 __ pop_ptr(Otos_i); // restore object pointer
2105 __ verify_oop(Otos_i);
2106 }
2107 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2108 __ bind(Label1);
2109 }
2110 }
2111
2112 void TemplateTable::getfield_or_static(int byte_no, bool is_static, RewriteControl rc) {
2113 transition(vtos, vtos);
2114
2115 Register Rcache = G3_scratch;
2116 Register index = G4_scratch;
2117 Register Rclass = Rcache;
2118 Register Roffset= G4_scratch;
2119 Register Rflags = G1_scratch;
2120 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2121
2122 resolve_cache_and_index(byte_no, Rcache, index, sizeof(u2));
2123 jvmti_post_field_access(Rcache, index, is_static, false);
2124 load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
2125
2126 if (!is_static) {
2127 pop_and_check_object(Rclass);
2128 } else {
2129 __ verify_oop(Rclass);
2130 }
2131
2132 Label exit;
2133
2134 Assembler::Membar_mask_bits membar_bits =
2135 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2136
2137 if (__ membar_has_effect(membar_bits)) {
2138 // Get volatile flag
2139 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2140 __ and3(Rflags, Lscratch, Lscratch);
2141 }
2142
2143 Label checkVolatile;
2144
2145 // compute field type
2146 Label notByte, notBool, notInt, notShort, notChar, notLong, notFloat, notObj;
2147 __ srl(Rflags, ConstantPoolCacheEntry::tos_state_shift, Rflags);
2148 // Make sure we don't need to mask Rflags after the above shift
2149 ConstantPoolCacheEntry::verify_tos_state_shift();
2150
2151 // Check atos before itos for getstatic, more likely (in Queens at least)
2152 __ cmp(Rflags, atos);
2153 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2154 __ delayed() ->cmp(Rflags, itos);
2155
2156 // atos
2157 __ load_heap_oop(Rclass, Roffset, Otos_i);
2158 __ verify_oop(Otos_i);
2159 __ push(atos);
2160 if (!is_static && rc == may_rewrite) {
2161 patch_bytecode(Bytecodes::_fast_agetfield, G3_scratch, G4_scratch);
2162 }
2163 __ ba(checkVolatile);
2164 __ delayed()->tst(Lscratch);
2165
2166 __ bind(notObj);
2167
2168 // cmp(Rflags, itos);
2169 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2170 __ delayed() ->cmp(Rflags, ltos);
2171
2172 // itos
2173 __ ld(Rclass, Roffset, Otos_i);
2174 __ push(itos);
2175 if (!is_static && rc == may_rewrite) {
2176 patch_bytecode(Bytecodes::_fast_igetfield, G3_scratch, G4_scratch);
2177 }
2178 __ ba(checkVolatile);
2179 __ delayed()->tst(Lscratch);
2180
2181 __ bind(notInt);
2182
2183 // cmp(Rflags, ltos);
2184 __ br(Assembler::notEqual, false, Assembler::pt, notLong);
2185 __ delayed() ->cmp(Rflags, btos);
2186
2187 // ltos
2188 // load must be atomic
2189 __ ld_long(Rclass, Roffset, Otos_l);
2190 __ push(ltos);
2191 if (!is_static && rc == may_rewrite) {
2192 patch_bytecode(Bytecodes::_fast_lgetfield, G3_scratch, G4_scratch);
2193 }
2194 __ ba(checkVolatile);
2195 __ delayed()->tst(Lscratch);
2196
2197 __ bind(notLong);
2198
2199 // cmp(Rflags, btos);
2200 __ br(Assembler::notEqual, false, Assembler::pt, notByte);
2201 __ delayed() ->cmp(Rflags, ztos);
2202
2203 // btos
2204 __ ldsb(Rclass, Roffset, Otos_i);
2205 __ push(itos);
2206 if (!is_static && rc == may_rewrite) {
2207 patch_bytecode(Bytecodes::_fast_bgetfield, G3_scratch, G4_scratch);
2208 }
2209 __ ba(checkVolatile);
2210 __ delayed()->tst(Lscratch);
2211
2212 __ bind(notByte);
2213
2214 // cmp(Rflags, ztos);
2215 __ br(Assembler::notEqual, false, Assembler::pt, notBool);
2216 __ delayed() ->cmp(Rflags, ctos);
2217
2218 // ztos
2219 __ ldsb(Rclass, Roffset, Otos_i);
2220 __ push(itos);
2221 if (!is_static && rc == may_rewrite) {
2222 // use btos rewriting, no truncating to t/f bit is needed for getfield.
2223 patch_bytecode(Bytecodes::_fast_bgetfield, G3_scratch, G4_scratch);
2224 }
2225 __ ba(checkVolatile);
2226 __ delayed()->tst(Lscratch);
2227
2228 __ bind(notBool);
2229
2230 // cmp(Rflags, ctos);
2231 __ br(Assembler::notEqual, false, Assembler::pt, notChar);
2232 __ delayed() ->cmp(Rflags, stos);
2233
2234 // ctos
2235 __ lduh(Rclass, Roffset, Otos_i);
2236 __ push(itos);
2237 if (!is_static && rc == may_rewrite) {
2238 patch_bytecode(Bytecodes::_fast_cgetfield, G3_scratch, G4_scratch);
2239 }
2240 __ ba(checkVolatile);
2241 __ delayed()->tst(Lscratch);
2242
2243 __ bind(notChar);
2244
2245 // cmp(Rflags, stos);
2246 __ br(Assembler::notEqual, false, Assembler::pt, notShort);
2247 __ delayed() ->cmp(Rflags, ftos);
2248
2249 // stos
2250 __ ldsh(Rclass, Roffset, Otos_i);
2251 __ push(itos);
2252 if (!is_static && rc == may_rewrite) {
2253 patch_bytecode(Bytecodes::_fast_sgetfield, G3_scratch, G4_scratch);
2254 }
2255 __ ba(checkVolatile);
2256 __ delayed()->tst(Lscratch);
2257
2258 __ bind(notShort);
2259
2260
2261 // cmp(Rflags, ftos);
2262 __ br(Assembler::notEqual, false, Assembler::pt, notFloat);
2263 __ delayed() ->tst(Lscratch);
2264
2265 // ftos
2266 __ ldf(FloatRegisterImpl::S, Rclass, Roffset, Ftos_f);
2267 __ push(ftos);
2268 if (!is_static && rc == may_rewrite) {
2269 patch_bytecode(Bytecodes::_fast_fgetfield, G3_scratch, G4_scratch);
2270 }
2271 __ ba(checkVolatile);
2272 __ delayed()->tst(Lscratch);
2273
2274 __ bind(notFloat);
2275
2276
2277 // dtos
2278 __ ldf(FloatRegisterImpl::D, Rclass, Roffset, Ftos_d);
2279 __ push(dtos);
2280 if (!is_static && rc == may_rewrite) {
2281 patch_bytecode(Bytecodes::_fast_dgetfield, G3_scratch, G4_scratch);
2282 }
2283
2284 __ bind(checkVolatile);
2285 if (__ membar_has_effect(membar_bits)) {
2286 // __ tst(Lscratch); executed in delay slot
2287 __ br(Assembler::zero, false, Assembler::pt, exit);
2288 __ delayed()->nop();
2289 volatile_barrier(membar_bits);
2290 }
2291
2292 __ bind(exit);
2293 }
2294
2295 void TemplateTable::getfield(int byte_no) {
2296 getfield_or_static(byte_no, false);
2297 }
2298
2299 void TemplateTable::nofast_getfield(int byte_no) {
2300 getfield_or_static(byte_no, false, may_not_rewrite);
2301 }
2302
2303 void TemplateTable::getstatic(int byte_no) {
2304 getfield_or_static(byte_no, true);
2305 }
2306
2307 void TemplateTable::fast_accessfield(TosState state) {
2308 transition(atos, state);
2309 Register Rcache = G3_scratch;
2310 Register index = G4_scratch;
2311 Register Roffset = G4_scratch;
2312 Register Rflags = Rcache;
2313 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2314
2315 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2316 jvmti_post_field_access(Rcache, index, /*is_static*/false, /*has_tos*/true);
2317
2318 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2319
2320 __ null_check(Otos_i);
2321 __ verify_oop(Otos_i);
2322
2323 Label exit;
2324
2325 Assembler::Membar_mask_bits membar_bits =
2326 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2327 if (__ membar_has_effect(membar_bits)) {
2328 // Get volatile flag
2329 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Rflags);
2330 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2331 }
2332
2333 switch (bytecode()) {
2334 case Bytecodes::_fast_bgetfield:
2335 __ ldsb(Otos_i, Roffset, Otos_i);
2336 break;
2337 case Bytecodes::_fast_cgetfield:
2338 __ lduh(Otos_i, Roffset, Otos_i);
2339 break;
2340 case Bytecodes::_fast_sgetfield:
2341 __ ldsh(Otos_i, Roffset, Otos_i);
2342 break;
2343 case Bytecodes::_fast_igetfield:
2344 __ ld(Otos_i, Roffset, Otos_i);
2345 break;
2346 case Bytecodes::_fast_lgetfield:
2347 __ ld_long(Otos_i, Roffset, Otos_l);
2348 break;
2349 case Bytecodes::_fast_fgetfield:
2350 __ ldf(FloatRegisterImpl::S, Otos_i, Roffset, Ftos_f);
2351 break;
2352 case Bytecodes::_fast_dgetfield:
2353 __ ldf(FloatRegisterImpl::D, Otos_i, Roffset, Ftos_d);
2354 break;
2355 case Bytecodes::_fast_agetfield:
2356 __ load_heap_oop(Otos_i, Roffset, Otos_i);
2357 break;
2358 default:
2359 ShouldNotReachHere();
2360 }
2361
2362 if (__ membar_has_effect(membar_bits)) {
2363 __ btst(Lscratch, Rflags);
2364 __ br(Assembler::zero, false, Assembler::pt, exit);
2365 __ delayed()->nop();
2366 volatile_barrier(membar_bits);
2367 __ bind(exit);
2368 }
2369
2370 if (state == atos) {
2371 __ verify_oop(Otos_i); // does not blow flags!
2372 }
2373 }
2374
2375 void TemplateTable::jvmti_post_fast_field_mod() {
2376 if (JvmtiExport::can_post_field_modification()) {
2377 // Check to see if a field modification watch has been set before we take
2378 // the time to call into the VM.
2379 Label done;
2380 AddressLiteral get_field_modification_count_addr(JvmtiExport::get_field_modification_count_addr());
2381 __ load_contents(get_field_modification_count_addr, G4_scratch);
2382 __ cmp_and_br_short(G4_scratch, 0, Assembler::equal, Assembler::pt, done);
2383 __ pop_ptr(G4_scratch); // copy the object pointer from tos
2384 __ verify_oop(G4_scratch);
2385 __ push_ptr(G4_scratch); // put the object pointer back on tos
2386 __ get_cache_entry_pointer_at_bcp(G1_scratch, G3_scratch, 1);
2387 // Save tos values before call_VM() clobbers them. Since we have
2388 // to do it for every data type, we use the saved values as the
2389 // jvalue object.
2390 switch (bytecode()) { // save tos values before call_VM() clobbers them
2391 case Bytecodes::_fast_aputfield: __ push_ptr(Otos_i); break;
2392 case Bytecodes::_fast_bputfield: // fall through
2393 case Bytecodes::_fast_zputfield: // fall through
2394 case Bytecodes::_fast_sputfield: // fall through
2395 case Bytecodes::_fast_cputfield: // fall through
2396 case Bytecodes::_fast_iputfield: __ push_i(Otos_i); break;
2397 case Bytecodes::_fast_dputfield: __ push_d(Ftos_d); break;
2398 case Bytecodes::_fast_fputfield: __ push_f(Ftos_f); break;
2399 // get words in right order for use as jvalue object
2400 case Bytecodes::_fast_lputfield: __ push_l(Otos_l); break;
2401 }
2402 // setup pointer to jvalue object
2403 __ mov(Lesp, G3_scratch); __ inc(G3_scratch, wordSize);
2404 // G4_scratch: object pointer
2405 // G1_scratch: cache entry pointer
2406 // G3_scratch: jvalue object on the stack
2407 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), G4_scratch, G1_scratch, G3_scratch);
2408 switch (bytecode()) { // restore tos values
2409 case Bytecodes::_fast_aputfield: __ pop_ptr(Otos_i); break;
2410 case Bytecodes::_fast_bputfield: // fall through
2411 case Bytecodes::_fast_zputfield: // fall through
2412 case Bytecodes::_fast_sputfield: // fall through
2413 case Bytecodes::_fast_cputfield: // fall through
2414 case Bytecodes::_fast_iputfield: __ pop_i(Otos_i); break;
2415 case Bytecodes::_fast_dputfield: __ pop_d(Ftos_d); break;
2416 case Bytecodes::_fast_fputfield: __ pop_f(Ftos_f); break;
2417 case Bytecodes::_fast_lputfield: __ pop_l(Otos_l); break;
2418 }
2419 __ bind(done);
2420 }
2421 }
2422
2423 // The registers Rcache and index expected to be set before call.
2424 // The function may destroy various registers, just not the Rcache and index registers.
2425 void TemplateTable::jvmti_post_field_mod(Register Rcache, Register index, bool is_static) {
2426 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2427
2428 if (JvmtiExport::can_post_field_modification()) {
2429 // Check to see if a field modification watch has been set before we take
2430 // the time to call into the VM.
2431 Label Label1;
2432 assert_different_registers(Rcache, index, G1_scratch);
2433 AddressLiteral get_field_modification_count_addr(JvmtiExport::get_field_modification_count_addr());
2434 __ load_contents(get_field_modification_count_addr, G1_scratch);
2435 __ cmp_and_br_short(G1_scratch, 0, Assembler::zero, Assembler::pt, Label1);
2436
2437 // The Rcache and index registers have been already set.
2438 // This allows to eliminate this call but the Rcache and index
2439 // registers must be correspondingly used after this line.
2440 __ get_cache_and_index_at_bcp(G1_scratch, G4_scratch, 1);
2441
2442 __ add(G1_scratch, in_bytes(cp_base_offset), G3_scratch);
2443 if (is_static) {
2444 // Life is simple. Null out the object pointer.
2445 __ clr(G4_scratch);
2446 } else {
2447 Register Rflags = G1_scratch;
2448 // Life is harder. The stack holds the value on top, followed by the
2449 // object. We don't know the size of the value, though; it could be
2450 // one or two words depending on its type. As a result, we must find
2451 // the type to determine where the object is.
2452
2453 Label two_word, valsizeknown;
2454 __ ld_ptr(G1_scratch, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2455 __ mov(Lesp, G4_scratch);
2456 __ srl(Rflags, ConstantPoolCacheEntry::tos_state_shift, Rflags);
2457 // Make sure we don't need to mask Rflags after the above shift
2458 ConstantPoolCacheEntry::verify_tos_state_shift();
2459 __ cmp(Rflags, ltos);
2460 __ br(Assembler::equal, false, Assembler::pt, two_word);
2461 __ delayed()->cmp(Rflags, dtos);
2462 __ br(Assembler::equal, false, Assembler::pt, two_word);
2463 __ delayed()->nop();
2464 __ inc(G4_scratch, Interpreter::expr_offset_in_bytes(1));
2465 __ ba_short(valsizeknown);
2466 __ bind(two_word);
2467
2468 __ inc(G4_scratch, Interpreter::expr_offset_in_bytes(2));
2469
2470 __ bind(valsizeknown);
2471 // setup object pointer
2472 __ ld_ptr(G4_scratch, 0, G4_scratch);
2473 __ verify_oop(G4_scratch);
2474 }
2475 // setup pointer to jvalue object
2476 __ mov(Lesp, G1_scratch); __ inc(G1_scratch, wordSize);
2477 // G4_scratch: object pointer or NULL if static
2478 // G3_scratch: cache entry pointer
2479 // G1_scratch: jvalue object on the stack
2480 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification),
2481 G4_scratch, G3_scratch, G1_scratch);
2482 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2483 __ bind(Label1);
2484 }
2485 }
2486
2487 void TemplateTable::pop_and_check_object(Register r) {
2488 __ pop_ptr(r);
2489 __ null_check(r); // for field access must check obj.
2490 __ verify_oop(r);
2491 }
2492
2493 void TemplateTable::putfield_or_static(int byte_no, bool is_static, RewriteControl rc) {
2494 transition(vtos, vtos);
2495 Register Rcache = G3_scratch;
2496 Register index = G4_scratch;
2497 Register Rclass = Rcache;
2498 Register Roffset= G4_scratch;
2499 Register Rflags = G1_scratch;
2500 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2501
2502 resolve_cache_and_index(byte_no, Rcache, index, sizeof(u2));
2503 jvmti_post_field_mod(Rcache, index, is_static);
2504 load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
2505
2506 Assembler::Membar_mask_bits read_bits =
2507 Assembler::Membar_mask_bits(Assembler::LoadStore | Assembler::StoreStore);
2508 Assembler::Membar_mask_bits write_bits = Assembler::StoreLoad;
2509
2510 Label notVolatile, checkVolatile, exit;
2511 if (__ membar_has_effect(read_bits) || __ membar_has_effect(write_bits)) {
2512 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2513 __ and3(Rflags, Lscratch, Lscratch);
2514
2515 if (__ membar_has_effect(read_bits)) {
2516 __ cmp_and_br_short(Lscratch, 0, Assembler::equal, Assembler::pt, notVolatile);
2517 volatile_barrier(read_bits);
2518 __ bind(notVolatile);
2519 }
2520 }
2521
2522 __ srl(Rflags, ConstantPoolCacheEntry::tos_state_shift, Rflags);
2523 // Make sure we don't need to mask Rflags after the above shift
2524 ConstantPoolCacheEntry::verify_tos_state_shift();
2525
2526 // compute field type
2527 Label notInt, notShort, notChar, notObj, notByte, notBool, notLong, notFloat;
2528
2529 if (is_static) {
2530 // putstatic with object type most likely, check that first
2531 __ cmp(Rflags, atos);
2532 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2533 __ delayed()->cmp(Rflags, itos);
2534
2535 // atos
2536 {
2537 __ pop_ptr();
2538 __ verify_oop(Otos_i);
2539 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2540 __ ba(checkVolatile);
2541 __ delayed()->tst(Lscratch);
2542 }
2543
2544 __ bind(notObj);
2545 // cmp(Rflags, itos);
2546 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2547 __ delayed()->cmp(Rflags, btos);
2548
2549 // itos
2550 {
2551 __ pop_i();
2552 __ st(Otos_i, Rclass, Roffset);
2553 __ ba(checkVolatile);
2554 __ delayed()->tst(Lscratch);
2555 }
2556
2557 __ bind(notInt);
2558 } else {
2559 // putfield with int type most likely, check that first
2560 __ cmp(Rflags, itos);
2561 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2562 __ delayed()->cmp(Rflags, atos);
2563
2564 // itos
2565 {
2566 __ pop_i();
2567 pop_and_check_object(Rclass);
2568 __ st(Otos_i, Rclass, Roffset);
2569 if (rc == may_rewrite) patch_bytecode(Bytecodes::_fast_iputfield, G3_scratch, G4_scratch, true, byte_no);
2570 __ ba(checkVolatile);
2571 __ delayed()->tst(Lscratch);
2572 }
2573
2574 __ bind(notInt);
2575 // cmp(Rflags, atos);
2576 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2577 __ delayed()->cmp(Rflags, btos);
2578
2579 // atos
2580 {
2581 __ pop_ptr();
2582 pop_and_check_object(Rclass);
2583 __ verify_oop(Otos_i);
2584 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2585 if (rc == may_rewrite) patch_bytecode(Bytecodes::_fast_aputfield, G3_scratch, G4_scratch, true, byte_no);
2586 __ ba(checkVolatile);
2587 __ delayed()->tst(Lscratch);
2588 }
2589
2590 __ bind(notObj);
2591 }
2592
2593 // cmp(Rflags, btos);
2594 __ br(Assembler::notEqual, false, Assembler::pt, notByte);
2595 __ delayed()->cmp(Rflags, ztos);
2596
2597 // btos
2598 {
2599 __ pop_i();
2600 if (!is_static) pop_and_check_object(Rclass);
2601 __ stb(Otos_i, Rclass, Roffset);
2602 if (!is_static && rc == may_rewrite) {
2603 patch_bytecode(Bytecodes::_fast_bputfield, G3_scratch, G4_scratch, true, byte_no);
2604 }
2605 __ ba(checkVolatile);
2606 __ delayed()->tst(Lscratch);
2607 }
2608
2609 __ bind(notByte);
2610
2611 // cmp(Rflags, btos);
2612 __ br(Assembler::notEqual, false, Assembler::pt, notBool);
2613 __ delayed()->cmp(Rflags, ltos);
2614
2615 // ztos
2616 {
2617 __ pop_i();
2618 if (!is_static) pop_and_check_object(Rclass);
2619 __ and3(Otos_i, 1, Otos_i);
2620 __ stb(Otos_i, Rclass, Roffset);
2621 if (!is_static && rc == may_rewrite) {
2622 patch_bytecode(Bytecodes::_fast_zputfield, G3_scratch, G4_scratch, true, byte_no);
2623 }
2624 __ ba(checkVolatile);
2625 __ delayed()->tst(Lscratch);
2626 }
2627
2628 __ bind(notBool);
2629 // cmp(Rflags, ltos);
2630 __ br(Assembler::notEqual, false, Assembler::pt, notLong);
2631 __ delayed()->cmp(Rflags, ctos);
2632
2633 // ltos
2634 {
2635 __ pop_l();
2636 if (!is_static) pop_and_check_object(Rclass);
2637 __ st_long(Otos_l, Rclass, Roffset);
2638 if (!is_static && rc == may_rewrite) {
2639 patch_bytecode(Bytecodes::_fast_lputfield, G3_scratch, G4_scratch, true, byte_no);
2640 }
2641 __ ba(checkVolatile);
2642 __ delayed()->tst(Lscratch);
2643 }
2644
2645 __ bind(notLong);
2646 // cmp(Rflags, ctos);
2647 __ br(Assembler::notEqual, false, Assembler::pt, notChar);
2648 __ delayed()->cmp(Rflags, stos);
2649
2650 // ctos (char)
2651 {
2652 __ pop_i();
2653 if (!is_static) pop_and_check_object(Rclass);
2654 __ sth(Otos_i, Rclass, Roffset);
2655 if (!is_static && rc == may_rewrite) {
2656 patch_bytecode(Bytecodes::_fast_cputfield, G3_scratch, G4_scratch, true, byte_no);
2657 }
2658 __ ba(checkVolatile);
2659 __ delayed()->tst(Lscratch);
2660 }
2661
2662 __ bind(notChar);
2663 // cmp(Rflags, stos);
2664 __ br(Assembler::notEqual, false, Assembler::pt, notShort);
2665 __ delayed()->cmp(Rflags, ftos);
2666
2667 // stos (short)
2668 {
2669 __ pop_i();
2670 if (!is_static) pop_and_check_object(Rclass);
2671 __ sth(Otos_i, Rclass, Roffset);
2672 if (!is_static && rc == may_rewrite) {
2673 patch_bytecode(Bytecodes::_fast_sputfield, G3_scratch, G4_scratch, true, byte_no);
2674 }
2675 __ ba(checkVolatile);
2676 __ delayed()->tst(Lscratch);
2677 }
2678
2679 __ bind(notShort);
2680 // cmp(Rflags, ftos);
2681 __ br(Assembler::notZero, false, Assembler::pt, notFloat);
2682 __ delayed()->nop();
2683
2684 // ftos
2685 {
2686 __ pop_f();
2687 if (!is_static) pop_and_check_object(Rclass);
2688 __ stf(FloatRegisterImpl::S, Ftos_f, Rclass, Roffset);
2689 if (!is_static && rc == may_rewrite) {
2690 patch_bytecode(Bytecodes::_fast_fputfield, G3_scratch, G4_scratch, true, byte_no);
2691 }
2692 __ ba(checkVolatile);
2693 __ delayed()->tst(Lscratch);
2694 }
2695
2696 __ bind(notFloat);
2697
2698 // dtos
2699 {
2700 __ pop_d();
2701 if (!is_static) pop_and_check_object(Rclass);
2702 __ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
2703 if (!is_static && rc == may_rewrite) {
2704 patch_bytecode(Bytecodes::_fast_dputfield, G3_scratch, G4_scratch, true, byte_no);
2705 }
2706 }
2707
2708 __ bind(checkVolatile);
2709 __ tst(Lscratch);
2710
2711 if (__ membar_has_effect(write_bits)) {
2712 // __ tst(Lscratch); in delay slot
2713 __ br(Assembler::zero, false, Assembler::pt, exit);
2714 __ delayed()->nop();
2715 volatile_barrier(Assembler::StoreLoad);
2716 __ bind(exit);
2717 }
2718 }
2719
2720 void TemplateTable::fast_storefield(TosState state) {
2721 transition(state, vtos);
2722 Register Rcache = G3_scratch;
2723 Register Rclass = Rcache;
2724 Register Roffset= G4_scratch;
2725 Register Rflags = G1_scratch;
2726 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2727
2728 jvmti_post_fast_field_mod();
2729
2730 __ get_cache_and_index_at_bcp(Rcache, G4_scratch, 1);
2731
2732 Assembler::Membar_mask_bits read_bits =
2733 Assembler::Membar_mask_bits(Assembler::LoadStore | Assembler::StoreStore);
2734 Assembler::Membar_mask_bits write_bits = Assembler::StoreLoad;
2735
2736 Label notVolatile, checkVolatile, exit;
2737 if (__ membar_has_effect(read_bits) || __ membar_has_effect(write_bits)) {
2738 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2739 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2740 __ and3(Rflags, Lscratch, Lscratch);
2741 if (__ membar_has_effect(read_bits)) {
2742 __ cmp_and_br_short(Lscratch, 0, Assembler::equal, Assembler::pt, notVolatile);
2743 volatile_barrier(read_bits);
2744 __ bind(notVolatile);
2745 }
2746 }
2747
2748 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2749 pop_and_check_object(Rclass);
2750
2751 switch (bytecode()) {
2752 case Bytecodes::_fast_zputfield: __ and3(Otos_i, 1, Otos_i); // fall through to bputfield
2753 case Bytecodes::_fast_bputfield: __ stb(Otos_i, Rclass, Roffset); break;
2754 case Bytecodes::_fast_cputfield: /* fall through */
2755 case Bytecodes::_fast_sputfield: __ sth(Otos_i, Rclass, Roffset); break;
2756 case Bytecodes::_fast_iputfield: __ st(Otos_i, Rclass, Roffset); break;
2757 case Bytecodes::_fast_lputfield: __ st_long(Otos_l, Rclass, Roffset); break;
2758 case Bytecodes::_fast_fputfield:
2759 __ stf(FloatRegisterImpl::S, Ftos_f, Rclass, Roffset);
2760 break;
2761 case Bytecodes::_fast_dputfield:
2762 __ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
2763 break;
2764 case Bytecodes::_fast_aputfield:
2765 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2766 break;
2767 default:
2768 ShouldNotReachHere();
2769 }
2770
2771 if (__ membar_has_effect(write_bits)) {
2772 __ cmp_and_br_short(Lscratch, 0, Assembler::equal, Assembler::pt, exit);
2773 volatile_barrier(Assembler::StoreLoad);
2774 __ bind(exit);
2775 }
2776 }
2777
2778 void TemplateTable::putfield(int byte_no) {
2779 putfield_or_static(byte_no, false);
2780 }
2781
2782 void TemplateTable::nofast_putfield(int byte_no) {
2783 putfield_or_static(byte_no, false, may_not_rewrite);
2784 }
2785
2786 void TemplateTable::putstatic(int byte_no) {
2787 putfield_or_static(byte_no, true);
2788 }
2789
2790 void TemplateTable::fast_xaccess(TosState state) {
2791 transition(vtos, state);
2792 Register Rcache = G3_scratch;
2793 Register Roffset = G4_scratch;
2794 Register Rflags = G4_scratch;
2795 Register Rreceiver = Lscratch;
2796
2797 __ ld_ptr(Llocals, 0, Rreceiver);
2798
2799 // access constant pool cache (is resolved)
2800 __ get_cache_and_index_at_bcp(Rcache, G4_scratch, 2);
2801 __ ld_ptr(Rcache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset(), Roffset);
2802 __ add(Lbcp, 1, Lbcp); // needed to report exception at the correct bcp
2803
2804 __ verify_oop(Rreceiver);
2805 __ null_check(Rreceiver);
2806 if (state == atos) {
2807 __ load_heap_oop(Rreceiver, Roffset, Otos_i);
2808 } else if (state == itos) {
2809 __ ld (Rreceiver, Roffset, Otos_i) ;
2810 } else if (state == ftos) {
2811 __ ldf(FloatRegisterImpl::S, Rreceiver, Roffset, Ftos_f);
2812 } else {
2813 ShouldNotReachHere();
2814 }
2815
2816 Assembler::Membar_mask_bits membar_bits =
2817 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2818 if (__ membar_has_effect(membar_bits)) {
2819
2820 // Get is_volatile value in Rflags and check if membar is needed
2821 __ ld_ptr(Rcache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset(), Rflags);
2822
2823 // Test volatile
2824 Label notVolatile;
2825 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2826 __ btst(Rflags, Lscratch);
2827 __ br(Assembler::zero, false, Assembler::pt, notVolatile);
2828 __ delayed()->nop();
2829 volatile_barrier(membar_bits);
2830 __ bind(notVolatile);
2831 }
2832
2833 __ interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
2834 __ sub(Lbcp, 1, Lbcp);
2835 }
2836
2837 //----------------------------------------------------------------------------------------------------
2838 // Calls
2839
2840 void TemplateTable::count_calls(Register method, Register temp) {
2841 // implemented elsewhere
2842 ShouldNotReachHere();
2843 }
2844
2845 void TemplateTable::prepare_invoke(int byte_no,
2846 Register method, // linked method (or i-klass)
2847 Register ra, // return address
2848 Register index, // itable index, MethodType, etc.
2849 Register recv, // if caller wants to see it
2850 Register flags // if caller wants to test it
2851 ) {
2852 // determine flags
2853 const Bytecodes::Code code = bytecode();
2854 const bool is_invokeinterface = code == Bytecodes::_invokeinterface;
2855 const bool is_invokedynamic = code == Bytecodes::_invokedynamic;
2856 const bool is_invokehandle = code == Bytecodes::_invokehandle;
2857 const bool is_invokevirtual = code == Bytecodes::_invokevirtual;
2858 const bool is_invokespecial = code == Bytecodes::_invokespecial;
2859 const bool load_receiver = (recv != noreg);
2860 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), "");
2861 assert(recv == noreg || recv == O0, "");
2862 assert(flags == noreg || flags == O1, "");
2863
2864 // setup registers & access constant pool cache
2865 if (recv == noreg) recv = O0;
2866 if (flags == noreg) flags = O1;
2867 const Register temp = O2;
2868 assert_different_registers(method, ra, index, recv, flags, temp);
2869
2870 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
2871
2872 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
2873
2874 // maybe push appendix to arguments
2875 if (is_invokedynamic || is_invokehandle) {
2876 Label L_no_push;
2877 __ set((1 << ConstantPoolCacheEntry::has_appendix_shift), temp);
2878 __ btst(flags, temp);
2879 __ br(Assembler::zero, false, Assembler::pt, L_no_push);
2880 __ delayed()->nop();
2881 // Push the appendix as a trailing parameter.
2882 // This must be done before we get the receiver,
2883 // since the parameter_size includes it.
2884 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0");
2885 __ load_resolved_reference_at_index(temp, index);
2886 __ verify_oop(temp);
2887 __ push_ptr(temp); // push appendix (MethodType, CallSite, etc.)
2888 __ bind(L_no_push);
2889 }
2890
2891 // load receiver if needed (after appendix is pushed so parameter size is correct)
2892 if (load_receiver) {
2893 __ and3(flags, ConstantPoolCacheEntry::parameter_size_mask, temp); // get parameter size
2894 __ load_receiver(temp, recv); // __ argument_address uses Gargs but we need Lesp
2895 __ verify_oop(recv);
2896 }
2897
2898 // compute return type
2899 __ srl(flags, ConstantPoolCacheEntry::tos_state_shift, ra);
2900 // Make sure we don't need to mask flags after the above shift
2901 ConstantPoolCacheEntry::verify_tos_state_shift();
2902 // load return address
2903 {
2904 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
2905 AddressLiteral table(table_addr);
2906 __ set(table, temp);
2907 __ sll(ra, LogBytesPerWord, ra);
2908 __ ld_ptr(Address(temp, ra), ra);
2909 }
2910 }
2911
2912
2913 void TemplateTable::generate_vtable_call(Register Rrecv, Register Rindex, Register Rret) {
2914 Register Rtemp = G4_scratch;
2915 Register Rcall = Rindex;
2916 assert_different_registers(Rcall, G5_method, Gargs, Rret);
2917
2918 // get target Method* & entry point
2919 __ lookup_virtual_method(Rrecv, Rindex, G5_method);
2920 __ profile_arguments_type(G5_method, Rcall, Gargs, true);
2921 __ profile_called_method(G5_method, Rtemp);
2922 __ call_from_interpreter(Rcall, Gargs, Rret);
2923 }
2924
2925 void TemplateTable::invokevirtual(int byte_no) {
2926 transition(vtos, vtos);
2927 assert(byte_no == f2_byte, "use this argument");
2928
2929 Register Rscratch = G3_scratch;
2930 Register Rtemp = G4_scratch;
2931 Register Rret = Lscratch;
2932 Register O0_recv = O0;
2933 Label notFinal;
2934
2935 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, true, false, false);
2936 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
2937
2938 // Check for vfinal
2939 __ set((1 << ConstantPoolCacheEntry::is_vfinal_shift), G4_scratch);
2940 __ btst(Rret, G4_scratch);
2941 __ br(Assembler::zero, false, Assembler::pt, notFinal);
2942 __ delayed()->and3(Rret, 0xFF, G4_scratch); // gets number of parameters
2943
2944 if (RewriteBytecodes && !UseSharedSpaces && !DumpSharedSpaces) {
2945 patch_bytecode(Bytecodes::_fast_invokevfinal, Rscratch, Rtemp);
2946 }
2947
2948 invokevfinal_helper(Rscratch, Rret);
2949
2950 __ bind(notFinal);
2951
2952 __ mov(G5_method, Rscratch); // better scratch register
2953 __ load_receiver(G4_scratch, O0_recv); // gets receiverOop
2954 // receiver is in O0_recv
2955 __ verify_oop(O0_recv);
2956
2957 // get return address
2958 AddressLiteral table(Interpreter::invoke_return_entry_table());
2959 __ set(table, Rtemp);
2960 __ srl(Rret, ConstantPoolCacheEntry::tos_state_shift, Rret); // get return type
2961 // Make sure we don't need to mask Rret after the above shift
2962 ConstantPoolCacheEntry::verify_tos_state_shift();
2963 __ sll(Rret, LogBytesPerWord, Rret);
2964 __ ld_ptr(Rtemp, Rret, Rret); // get return address
2965
2966 // get receiver klass
2967 __ null_check(O0_recv, oopDesc::klass_offset_in_bytes());
2968 __ load_klass(O0_recv, O0_recv);
2969 __ verify_klass_ptr(O0_recv);
2970
2971 __ profile_virtual_call(O0_recv, O4);
2972
2973 generate_vtable_call(O0_recv, Rscratch, Rret);
2974 }
2975
2976 void TemplateTable::fast_invokevfinal(int byte_no) {
2977 transition(vtos, vtos);
2978 assert(byte_no == f2_byte, "use this argument");
2979
2980 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Lscratch, true,
2981 /*is_invokevfinal*/true, false);
2982 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
2983 invokevfinal_helper(G3_scratch, Lscratch);
2984 }
2985
2986 void TemplateTable::invokevfinal_helper(Register Rscratch, Register Rret) {
2987 Register Rtemp = G4_scratch;
2988
2989 // Load receiver from stack slot
2990 __ ld_ptr(G5_method, in_bytes(Method::const_offset()), G4_scratch);
2991 __ lduh(G4_scratch, in_bytes(ConstMethod::size_of_parameters_offset()), G4_scratch);
2992 __ load_receiver(G4_scratch, O0);
2993
2994 // receiver NULL check
2995 __ null_check(O0);
2996
2997 __ profile_final_call(O4);
2998 __ profile_arguments_type(G5_method, Rscratch, Gargs, true);
2999
3000 // get return address
3001 AddressLiteral table(Interpreter::invoke_return_entry_table());
3002 __ set(table, Rtemp);
3003 __ srl(Rret, ConstantPoolCacheEntry::tos_state_shift, Rret); // get return type
3004 // Make sure we don't need to mask Rret after the above shift
3005 ConstantPoolCacheEntry::verify_tos_state_shift();
3006 __ sll(Rret, LogBytesPerWord, Rret);
3007 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3008
3009
3010 // do the call
3011 __ call_from_interpreter(Rscratch, Gargs, Rret);
3012 }
3013
3014
3015 void TemplateTable::invokespecial(int byte_no) {
3016 transition(vtos, vtos);
3017 assert(byte_no == f1_byte, "use this argument");
3018
3019 const Register Rret = Lscratch;
3020 const Register O0_recv = O0;
3021 const Register Rscratch = G3_scratch;
3022
3023 prepare_invoke(byte_no, G5_method, Rret, noreg, O0_recv); // get receiver also for null check
3024 __ null_check(O0_recv);
3025
3026 // do the call
3027 __ profile_call(O4);
3028 __ profile_arguments_type(G5_method, Rscratch, Gargs, false);
3029 __ call_from_interpreter(Rscratch, Gargs, Rret);
3030 }
3031
3032
3033 void TemplateTable::invokestatic(int byte_no) {
3034 transition(vtos, vtos);
3035 assert(byte_no == f1_byte, "use this argument");
3036
3037 const Register Rret = Lscratch;
3038 const Register Rscratch = G3_scratch;
3039
3040 prepare_invoke(byte_no, G5_method, Rret); // get f1 Method*
3041
3042 // do the call
3043 __ profile_call(O4);
3044 __ profile_arguments_type(G5_method, Rscratch, Gargs, false);
3045 __ call_from_interpreter(Rscratch, Gargs, Rret);
3046 }
3047
3048 void TemplateTable::invokeinterface_object_method(Register RKlass,
3049 Register Rcall,
3050 Register Rret,
3051 Register Rflags) {
3052 Register Rscratch = G4_scratch;
3053 Register Rindex = Lscratch;
3054
3055 assert_different_registers(Rscratch, Rindex, Rret);
3056
3057 Label notFinal;
3058
3059 // Check for vfinal
3060 __ set((1 << ConstantPoolCacheEntry::is_vfinal_shift), Rscratch);
3061 __ btst(Rflags, Rscratch);
3062 __ br(Assembler::zero, false, Assembler::pt, notFinal);
3063 __ delayed()->nop();
3064
3065 __ profile_final_call(O4);
3066
3067 // do the call - the index (f2) contains the Method*
3068 assert_different_registers(G5_method, Gargs, Rcall);
3069 __ mov(Rindex, G5_method);
3070 __ profile_arguments_type(G5_method, Rcall, Gargs, true);
3071 __ call_from_interpreter(Rcall, Gargs, Rret);
3072 __ bind(notFinal);
3073
3074 __ profile_virtual_call(RKlass, O4);
3075 generate_vtable_call(RKlass, Rindex, Rret);
3076 }
3077
3078
3079 void TemplateTable::invokeinterface(int byte_no) {
3080 transition(vtos, vtos);
3081 assert(byte_no == f1_byte, "use this argument");
3082
3083 const Register Rinterface = G1_scratch;
3084 const Register Rmethod = Lscratch;
3085 const Register Rret = G3_scratch;
3086 const Register O0_recv = O0;
3087 const Register O1_flags = O1;
3088 const Register O2_Klass = O2;
3089 const Register Rscratch = G4_scratch;
3090 assert_different_registers(Rscratch, G5_method);
3091
3092 prepare_invoke(byte_no, Rinterface, Rret, Rmethod, O0_recv, O1_flags);
3093
3094 // get receiver klass
3095 __ null_check(O0_recv, oopDesc::klass_offset_in_bytes());
3096 __ load_klass(O0_recv, O2_Klass);
3097
3098 // Special case of invokeinterface called for virtual method of
3099 // java.lang.Object. See cpCacheOop.cpp for details.
3100 // This code isn't produced by javac, but could be produced by
3101 // another compliant java compiler.
3102 Label notMethod;
3103 __ set((1 << ConstantPoolCacheEntry::is_forced_virtual_shift), Rscratch);
3104 __ btst(O1_flags, Rscratch);
3105 __ br(Assembler::zero, false, Assembler::pt, notMethod);
3106 __ delayed()->nop();
3107
3108 invokeinterface_object_method(O2_Klass, Rinterface, Rret, O1_flags);
3109
3110 __ bind(notMethod);
3111
3112 Register Rtemp = O1_flags;
3113
3114 Label L_no_such_interface;
3115
3116 // Receiver subtype check against REFC.
3117 __ lookup_interface_method(// inputs: rec. class, interface, itable index
3118 O2_Klass, Rinterface, noreg,
3119 // outputs: temp reg1, temp reg2, temp reg3
3120 G5_method, Rscratch, Rtemp,
3121 L_no_such_interface,
3122 /*return_method=*/false);
3123
3124 __ profile_virtual_call(O2_Klass, O4);
3125
3126 //
3127 // find entry point to call
3128 //
3129
3130 // Get declaring interface class from method
3131 __ ld_ptr(Rmethod, Method::const_offset(), Rinterface);
3132 __ ld_ptr(Rinterface, ConstMethod::constants_offset(), Rinterface);
3133 __ ld_ptr(Rinterface, ConstantPool::pool_holder_offset_in_bytes(), Rinterface);
3134
3135 // Get itable index from method
3136 const Register Rindex = G5_method;
3137 __ ld(Rmethod, Method::itable_index_offset(), Rindex);
3138 __ sub(Rindex, Method::itable_index_max, Rindex);
3139 __ neg(Rindex);
3140
3141 // Preserve O2_Klass for throw_AbstractMethodErrorVerbose
3142 __ mov(O2_Klass, O4);
3143 __ lookup_interface_method(// inputs: rec. class, interface, itable index
3144 O4, Rinterface, Rindex,
3145 // outputs: method, scan temp reg, temp reg
3146 G5_method, Rscratch, Rtemp,
3147 L_no_such_interface);
3148
3149 // Check for abstract method error.
3150 {
3151 Label ok;
3152 __ br_notnull_short(G5_method, Assembler::pt, ok);
3153 // Pass arguments for generating a verbose error message.
3154 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodErrorVerbose),
3155 O2_Klass, Rmethod);
3156 __ should_not_reach_here();
3157 __ bind(ok);
3158 }
3159
3160 Register Rcall = Rinterface;
3161 assert_different_registers(Rcall, G5_method, Gargs, Rret);
3162
3163 __ profile_arguments_type(G5_method, Rcall, Gargs, true);
3164 __ profile_called_method(G5_method, Rscratch);
3165 __ call_from_interpreter(Rcall, Gargs, Rret);
3166
3167 __ bind(L_no_such_interface);
3168 // Pass arguments for generating a verbose error message.
3169 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_IncompatibleClassChangeErrorVerbose),
3170 O2_Klass, Rinterface);
3171 __ should_not_reach_here();
3172 }
3173
3174 void TemplateTable::invokehandle(int byte_no) {
3175 transition(vtos, vtos);
3176 assert(byte_no == f1_byte, "use this argument");
3177
3178 const Register Rret = Lscratch;
3179 const Register G4_mtype = G4_scratch;
3180 const Register O0_recv = O0;
3181 const Register Rscratch = G3_scratch;
3182
3183 prepare_invoke(byte_no, G5_method, Rret, G4_mtype, O0_recv);
3184 __ null_check(O0_recv);
3185
3186 // G4: MethodType object (from cpool->resolved_references[f1], if necessary)
3187 // G5: MH.invokeExact_MT method (from f2)
3188
3189 // Note: G4_mtype is already pushed (if necessary) by prepare_invoke
3190
3191 // do the call
3192 __ verify_oop(G4_mtype);
3193 __ profile_final_call(O4); // FIXME: profile the LambdaForm also
3194 __ profile_arguments_type(G5_method, Rscratch, Gargs, true);
3195 __ call_from_interpreter(Rscratch, Gargs, Rret);
3196 }
3197
3198
3199 void TemplateTable::invokedynamic(int byte_no) {
3200 transition(vtos, vtos);
3201 assert(byte_no == f1_byte, "use this argument");
3202
3203 const Register Rret = Lscratch;
3204 const Register G4_callsite = G4_scratch;
3205 const Register Rscratch = G3_scratch;
3206
3207 prepare_invoke(byte_no, G5_method, Rret, G4_callsite);
3208
3209 // G4: CallSite object (from cpool->resolved_references[f1])
3210 // G5: MH.linkToCallSite method (from f2)
3211
3212 // Note: G4_callsite is already pushed by prepare_invoke
3213
3214 // %%% should make a type profile for any invokedynamic that takes a ref argument
3215 // profile this call
3216 __ profile_call(O4);
3217
3218 // do the call
3219 __ verify_oop(G4_callsite);
3220 __ profile_arguments_type(G5_method, Rscratch, Gargs, false);
3221 __ call_from_interpreter(Rscratch, Gargs, Rret);
3222 }
3223
3224
3225 //----------------------------------------------------------------------------------------------------
3226 // Allocation
3227
3228 void TemplateTable::_new() {
3229 transition(vtos, atos);
3230
3231 Label slow_case;
3232 Label done;
3233 Label initialize_header;
3234 Label initialize_object; // including clearing the fields
3235
3236 Register RallocatedObject = Otos_i;
3237 Register RinstanceKlass = O1;
3238 Register Roffset = O3;
3239 Register Rscratch = O4;
3240
3241 __ get_2_byte_integer_at_bcp(1, Rscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3242 __ get_cpool_and_tags(Rscratch, G3_scratch);
3243 // make sure the class we're about to instantiate has been resolved
3244 // This is done before loading InstanceKlass to be consistent with the order
3245 // how Constant Pool is updated (see ConstantPool::klass_at_put)
3246 __ add(G3_scratch, Array<u1>::base_offset_in_bytes(), G3_scratch);
3247 __ ldub(G3_scratch, Roffset, G3_scratch);
3248 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3249 __ br(Assembler::notEqual, false, Assembler::pn, slow_case);
3250 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3251 // get InstanceKlass
3252 __ load_resolved_klass_at_offset(Rscratch, Roffset, RinstanceKlass);
3253
3254 // make sure klass is fully initialized:
3255 __ ldub(RinstanceKlass, in_bytes(InstanceKlass::init_state_offset()), G3_scratch);
3256 __ cmp(G3_scratch, InstanceKlass::fully_initialized);
3257 __ br(Assembler::notEqual, false, Assembler::pn, slow_case);
3258 __ delayed()->ld(RinstanceKlass, in_bytes(Klass::layout_helper_offset()), Roffset);
3259
3260 // get instance_size in InstanceKlass (already aligned)
3261 //__ ld(RinstanceKlass, in_bytes(Klass::layout_helper_offset()), Roffset);
3262
3263 // make sure klass does not have has_finalizer, or is abstract, or interface or java/lang/Class
3264 __ btst(Klass::_lh_instance_slow_path_bit, Roffset);
3265 __ br(Assembler::notZero, false, Assembler::pn, slow_case);
3266 __ delayed()->nop();
3267
3268 // Allocate the instance:
3269 // If TLAB is enabled:
3270 // Try to allocate in the TLAB.
3271 // If fails, go to the slow path.
3272 // Else If inline contiguous allocations are enabled:
3273 // Try to allocate in eden.
3274 // If fails due to heap end, go to slow path.
3275 //
3276 // If TLAB is enabled OR inline contiguous is enabled:
3277 // Initialize the allocation.
3278 // Exit.
3279 //
3280 // Go to slow path.
3281
3282 const bool allow_shared_alloc =
3283 Universe::heap()->supports_inline_contig_alloc();
3284
3285 if(UseTLAB) {
3286 Register RoldTopValue = RallocatedObject;
3287 Register RtlabWasteLimitValue = G3_scratch;
3288 Register RnewTopValue = G1_scratch;
3289 Register RendValue = Rscratch;
3290 Register RfreeValue = RnewTopValue;
3291
3292 // check if we can allocate in the TLAB
3293 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), RoldTopValue); // sets up RalocatedObject
3294 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_end_offset()), RendValue);
3295 __ add(RoldTopValue, Roffset, RnewTopValue);
3296
3297 // if there is enough space, we do not CAS and do not clear
3298 __ cmp(RnewTopValue, RendValue);
3299 if(ZeroTLAB) {
3300 // the fields have already been cleared
3301 __ brx(Assembler::lessEqualUnsigned, true, Assembler::pt, initialize_header);
3302 } else {
3303 // initialize both the header and fields
3304 __ brx(Assembler::lessEqualUnsigned, true, Assembler::pt, initialize_object);
3305 }
3306 __ delayed()->st_ptr(RnewTopValue, G2_thread, in_bytes(JavaThread::tlab_top_offset()));
3307
3308 // Allocation does not fit in the TLAB.
3309 __ ba_short(slow_case);
3310 } else {
3311 // Allocation in the shared Eden
3312 if (allow_shared_alloc) {
3313 Register RoldTopValue = G1_scratch;
3314 Register RtopAddr = G3_scratch;
3315 Register RnewTopValue = RallocatedObject;
3316 Register RendValue = Rscratch;
3317
3318 __ set((intptr_t)Universe::heap()->top_addr(), RtopAddr);
3319
3320 Label retry;
3321 __ bind(retry);
3322 __ set((intptr_t)Universe::heap()->end_addr(), RendValue);
3323 __ ld_ptr(RendValue, 0, RendValue);
3324 __ ld_ptr(RtopAddr, 0, RoldTopValue);
3325 __ add(RoldTopValue, Roffset, RnewTopValue);
3326
3327 // RnewTopValue contains the top address after the new object
3328 // has been allocated.
3329 __ cmp_and_brx_short(RnewTopValue, RendValue, Assembler::greaterUnsigned, Assembler::pn, slow_case);
3330
3331 __ cas_ptr(RtopAddr, RoldTopValue, RnewTopValue);
3332
3333 // if someone beat us on the allocation, try again, otherwise continue
3334 __ cmp_and_brx_short(RoldTopValue, RnewTopValue, Assembler::notEqual, Assembler::pn, retry);
3335
3336 // bump total bytes allocated by this thread
3337 // RoldTopValue and RtopAddr are dead, so can use G1 and G3
3338 __ incr_allocated_bytes(Roffset, G1_scratch, G3_scratch);
3339 }
3340 }
3341
3342 // If UseTLAB or allow_shared_alloc are true, the object is created above and
3343 // there is an initialize need. Otherwise, skip and go to the slow path.
3344 if (UseTLAB || allow_shared_alloc) {
3345 // clear object fields
3346 __ bind(initialize_object);
3347 __ deccc(Roffset, sizeof(oopDesc));
3348 __ br(Assembler::zero, false, Assembler::pt, initialize_header);
3349 __ delayed()->add(RallocatedObject, sizeof(oopDesc), G3_scratch);
3350
3351 // initialize remaining object fields
3352 if (UseBlockZeroing) {
3353 // Use BIS for zeroing
3354 __ bis_zeroing(G3_scratch, Roffset, G1_scratch, initialize_header);
3355 } else {
3356 Label loop;
3357 __ subcc(Roffset, wordSize, Roffset);
3358 __ bind(loop);
3359 //__ subcc(Roffset, wordSize, Roffset); // executed above loop or in delay slot
3360 __ st_ptr(G0, G3_scratch, Roffset);
3361 __ br(Assembler::notEqual, false, Assembler::pt, loop);
3362 __ delayed()->subcc(Roffset, wordSize, Roffset);
3363 }
3364 __ ba_short(initialize_header);
3365 }
3366
3367 // slow case
3368 __ bind(slow_case);
3369 __ get_2_byte_integer_at_bcp(1, G3_scratch, O2, InterpreterMacroAssembler::Unsigned);
3370 __ get_constant_pool(O1);
3371
3372 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), O1, O2);
3373
3374 __ ba_short(done);
3375
3376 // Initialize the header: mark, klass
3377 __ bind(initialize_header);
3378
3379 if (UseBiasedLocking) {
3380 __ ld_ptr(RinstanceKlass, in_bytes(Klass::prototype_header_offset()), G4_scratch);
3381 } else {
3382 __ set((intptr_t)markOopDesc::prototype(), G4_scratch);
3383 }
3384 __ st_ptr(G4_scratch, RallocatedObject, oopDesc::mark_offset_in_bytes()); // mark
3385 __ store_klass_gap(G0, RallocatedObject); // klass gap if compressed
3386 __ store_klass(RinstanceKlass, RallocatedObject); // klass (last for cms)
3387
3388 {
3389 SkipIfEqual skip_if(
3390 _masm, G4_scratch, &DTraceAllocProbes, Assembler::zero);
3391 // Trigger dtrace event
3392 __ push(atos);
3393 __ call_VM_leaf(noreg,
3394 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), O0);
3395 __ pop(atos);
3396 }
3397
3398 // continue
3399 __ bind(done);
3400 }
3401
3402
3403
3404 void TemplateTable::newarray() {
3405 transition(itos, atos);
3406 __ ldub(Lbcp, 1, O1);
3407 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), O1, Otos_i);
3408 }
3409
3410
3411 void TemplateTable::anewarray() {
3412 transition(itos, atos);
3413 __ get_constant_pool(O1);
3414 __ get_2_byte_integer_at_bcp(1, G4_scratch, O2, InterpreterMacroAssembler::Unsigned);
3415 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), O1, O2, Otos_i);
3416 }
3417
3418
3419 void TemplateTable::arraylength() {
3420 transition(atos, itos);
3421 Label ok;
3422 __ verify_oop(Otos_i);
3423 __ tst(Otos_i);
3424 __ throw_if_not_1_x( Assembler::notZero, ok );
3425 __ delayed()->ld(Otos_i, arrayOopDesc::length_offset_in_bytes(), Otos_i);
3426 __ throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ok);
3427 }
3428
3429
3430 void TemplateTable::checkcast() {
3431 transition(atos, atos);
3432 Label done, is_null, quicked, cast_ok, resolved;
3433 Register Roffset = G1_scratch;
3434 Register RobjKlass = O5;
3435 Register RspecifiedKlass = O4;
3436
3437 // Check for casting a NULL
3438 __ br_null(Otos_i, false, Assembler::pn, is_null);
3439 __ delayed()->nop();
3440
3441 // Get value klass in RobjKlass
3442 __ load_klass(Otos_i, RobjKlass); // get value klass
3443
3444 // Get constant pool tag
3445 __ get_2_byte_integer_at_bcp(1, Lscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3446
3447 // See if the checkcast has been quickened
3448 __ get_cpool_and_tags(Lscratch, G3_scratch);
3449 __ add(G3_scratch, Array<u1>::base_offset_in_bytes(), G3_scratch);
3450 __ ldub(G3_scratch, Roffset, G3_scratch);
3451 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3452 __ br(Assembler::equal, true, Assembler::pt, quicked);
3453 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3454
3455 __ push_ptr(); // save receiver for result, and for GC
3456 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
3457 __ get_vm_result_2(RspecifiedKlass);
3458 __ pop_ptr(Otos_i, G3_scratch); // restore receiver
3459
3460 __ ba_short(resolved);
3461
3462 // Extract target class from constant pool
3463 __ bind(quicked);
3464 __ load_resolved_klass_at_offset(Lscratch, Roffset, RspecifiedKlass);
3465
3466
3467 __ bind(resolved);
3468 __ load_klass(Otos_i, RobjKlass); // get value klass
3469
3470 // Generate a fast subtype check. Branch to cast_ok if no
3471 // failure. Throw exception if failure.
3472 __ gen_subtype_check( RobjKlass, RspecifiedKlass, G3_scratch, G4_scratch, G1_scratch, cast_ok );
3473
3474 // Not a subtype; so must throw exception
3475 __ throw_if_not_x( Assembler::never, Interpreter::_throw_ClassCastException_entry, G3_scratch );
3476
3477 __ bind(cast_ok);
3478
3479 if (ProfileInterpreter) {
3480 __ ba_short(done);
3481 }
3482 __ bind(is_null);
3483 __ profile_null_seen(G3_scratch);
3484 __ bind(done);
3485 }
3486
3487
3488 void TemplateTable::instanceof() {
3489 Label done, is_null, quicked, resolved;
3490 transition(atos, itos);
3491 Register Roffset = G1_scratch;
3492 Register RobjKlass = O5;
3493 Register RspecifiedKlass = O4;
3494
3495 // Check for casting a NULL
3496 __ br_null(Otos_i, false, Assembler::pt, is_null);
3497 __ delayed()->nop();
3498
3499 // Get value klass in RobjKlass
3500 __ load_klass(Otos_i, RobjKlass); // get value klass
3501
3502 // Get constant pool tag
3503 __ get_2_byte_integer_at_bcp(1, Lscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3504
3505 // See if the checkcast has been quickened
3506 __ get_cpool_and_tags(Lscratch, G3_scratch);
3507 __ add(G3_scratch, Array<u1>::base_offset_in_bytes(), G3_scratch);
3508 __ ldub(G3_scratch, Roffset, G3_scratch);
3509 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3510 __ br(Assembler::equal, true, Assembler::pt, quicked);
3511 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3512
3513 __ push_ptr(); // save receiver for result, and for GC
3514 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
3515 __ get_vm_result_2(RspecifiedKlass);
3516 __ pop_ptr(Otos_i, G3_scratch); // restore receiver
3517
3518 __ ba_short(resolved);
3519
3520 // Extract target class from constant pool
3521 __ bind(quicked);
3522 __ get_constant_pool(Lscratch);
3523 __ load_resolved_klass_at_offset(Lscratch, Roffset, RspecifiedKlass);
3524
3525 __ bind(resolved);
3526 __ load_klass(Otos_i, RobjKlass); // get value klass
3527
3528 // Generate a fast subtype check. Branch to cast_ok if no
3529 // failure. Return 0 if failure.
3530 __ or3(G0, 1, Otos_i); // set result assuming quick tests succeed
3531 __ gen_subtype_check( RobjKlass, RspecifiedKlass, G3_scratch, G4_scratch, G1_scratch, done );
3532 // Not a subtype; return 0;
3533 __ clr( Otos_i );
3534
3535 if (ProfileInterpreter) {
3536 __ ba_short(done);
3537 }
3538 __ bind(is_null);
3539 __ profile_null_seen(G3_scratch);
3540 __ bind(done);
3541 }
3542
3543 void TemplateTable::_breakpoint() {
3544
3545 // Note: We get here even if we are single stepping..
3546 // jbug insists on setting breakpoints at every bytecode
3547 // even if we are in single step mode.
3548
3549 transition(vtos, vtos);
3550 // get the unpatched byte code
3551 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), Lmethod, Lbcp);
3552 __ mov(O0, Lbyte_code);
3553
3554 // post the breakpoint event
3555 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), Lmethod, Lbcp);
3556
3557 // complete the execution of original bytecode
3558 __ dispatch_normal(vtos);
3559 }
3560
3561
3562 //----------------------------------------------------------------------------------------------------
3563 // Exceptions
3564
3565 void TemplateTable::athrow() {
3566 transition(atos, vtos);
3567
3568 // This works because exception is cached in Otos_i which is same as O0,
3569 // which is same as what throw_exception_entry_expects
3570 assert(Otos_i == Oexception, "see explanation above");
3571
3572 __ verify_oop(Otos_i);
3573 __ null_check(Otos_i);
3574 __ throw_if_not_x(Assembler::never, Interpreter::throw_exception_entry(), G3_scratch);
3575 }
3576
3577
3578 //----------------------------------------------------------------------------------------------------
3579 // Synchronization
3580
3581
3582 // See frame_sparc.hpp for monitor block layout.
3583 // Monitor elements are dynamically allocated by growing stack as needed.
3584
3585 void TemplateTable::monitorenter() {
3586 transition(atos, vtos);
3587 __ verify_oop(Otos_i);
3588 // Try to acquire a lock on the object
3589 // Repeat until succeeded (i.e., until
3590 // monitorenter returns true).
3591
3592 { Label ok;
3593 __ tst(Otos_i);
3594 __ throw_if_not_1_x( Assembler::notZero, ok);
3595 __ delayed()->mov(Otos_i, Lscratch); // save obj
3596 __ throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ok);
3597 }
3598
3599 assert(O0 == Otos_i, "Be sure where the object to lock is");
3600
3601 // find a free slot in the monitor block
3602
3603
3604 // initialize entry pointer
3605 __ clr(O1); // points to free slot or NULL
3606
3607 {
3608 Label entry, loop, exit;
3609 __ add( __ top_most_monitor(), O2 ); // last one to check
3610 __ ba( entry );
3611 __ delayed()->mov( Lmonitors, O3 ); // first one to check
3612
3613
3614 __ bind( loop );
3615
3616 __ verify_oop(O4); // verify each monitor's oop
3617 __ tst(O4); // is this entry unused?
3618 __ movcc( Assembler::zero, false, Assembler::ptr_cc, O3, O1);
3619
3620 __ cmp(O4, O0); // check if current entry is for same object
3621 __ brx( Assembler::equal, false, Assembler::pn, exit );
3622 __ delayed()->inc( O3, frame::interpreter_frame_monitor_size() * wordSize ); // check next one
3623
3624 __ bind( entry );
3625
3626 __ cmp( O3, O2 );
3627 __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, loop );
3628 __ delayed()->ld_ptr(O3, BasicObjectLock::obj_offset_in_bytes(), O4);
3629
3630 __ bind( exit );
3631 }
3632
3633 { Label allocated;
3634
3635 // found free slot?
3636 __ br_notnull_short(O1, Assembler::pn, allocated);
3637
3638 __ add_monitor_to_stack( false, O2, O3 );
3639 __ mov(Lmonitors, O1);
3640
3641 __ bind(allocated);
3642 }
3643
3644 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly.
3645 // The object has already been poped from the stack, so the expression stack looks correct.
3646 __ inc(Lbcp);
3647
3648 __ st_ptr(O0, O1, BasicObjectLock::obj_offset_in_bytes()); // store object
3649 __ lock_object(O1, O0);
3650
3651 // check if there's enough space on the stack for the monitors after locking
3652 __ generate_stack_overflow_check(0);
3653
3654 // The bcp has already been incremented. Just need to dispatch to next instruction.
3655 __ dispatch_next(vtos);
3656 }
3657
3658
3659 void TemplateTable::monitorexit() {
3660 transition(atos, vtos);
3661 __ verify_oop(Otos_i);
3662 __ tst(Otos_i);
3663 __ throw_if_not_x( Assembler::notZero, Interpreter::_throw_NullPointerException_entry, G3_scratch );
3664
3665 assert(O0 == Otos_i, "just checking");
3666
3667 { Label entry, loop, found;
3668 __ add( __ top_most_monitor(), O2 ); // last one to check
3669 __ ba(entry);
3670 // use Lscratch to hold monitor elem to check, start with most recent monitor,
3671 // By using a local it survives the call to the C routine.
3672 __ delayed()->mov( Lmonitors, Lscratch );
3673
3674 __ bind( loop );
3675
3676 __ verify_oop(O4); // verify each monitor's oop
3677 __ cmp(O4, O0); // check if current entry is for desired object
3678 __ brx( Assembler::equal, true, Assembler::pt, found );
3679 __ delayed()->mov(Lscratch, O1); // pass found entry as argument to monitorexit
3680
3681 __ inc( Lscratch, frame::interpreter_frame_monitor_size() * wordSize ); // advance to next
3682
3683 __ bind( entry );
3684
3685 __ cmp( Lscratch, O2 );
3686 __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, loop );
3687 __ delayed()->ld_ptr(Lscratch, BasicObjectLock::obj_offset_in_bytes(), O4);
3688
3689 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
3690 __ should_not_reach_here();
3691
3692 __ bind(found);
3693 }
3694 __ unlock_object(O1);
3695 }
3696
3697
3698 //----------------------------------------------------------------------------------------------------
3699 // Wide instructions
3700
3701 void TemplateTable::wide() {
3702 transition(vtos, vtos);
3703 __ ldub(Lbcp, 1, G3_scratch);// get next bc
3704 __ sll(G3_scratch, LogBytesPerWord, G3_scratch);
3705 AddressLiteral ep(Interpreter::_wentry_point);
3706 __ set(ep, G4_scratch);
3707 __ ld_ptr(G4_scratch, G3_scratch, G3_scratch);
3708 __ jmp(G3_scratch, G0);
3709 __ delayed()->nop();
3710 // Note: the Lbcp increment step is part of the individual wide bytecode implementations
3711 }
3712
3713
3714 //----------------------------------------------------------------------------------------------------
3715 // Multi arrays
3716
3717 void TemplateTable::multianewarray() {
3718 transition(vtos, atos);
3719 // put ndims * wordSize into Lscratch
3720 __ ldub( Lbcp, 3, Lscratch);
3721 __ sll( Lscratch, Interpreter::logStackElementSize, Lscratch);
3722 // Lesp points past last_dim, so set to O1 to first_dim address
3723 __ add( Lesp, Lscratch, O1);
3724 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), O1);
3725 __ add( Lesp, Lscratch, Lesp); // pop all dimensions off the stack
3726 }