1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "interpreter/interpreter.hpp"
27 #include "interpreter/interpreterRuntime.hpp"
28 #include "interpreter/templateTable.hpp"
29 #include "memory/universe.inline.hpp"
30 #include "oops/methodDataOop.hpp"
31 #include "oops/objArrayKlass.hpp"
32 #include "oops/oop.inline.hpp"
33 #include "prims/methodHandles.hpp"
34 #include "runtime/sharedRuntime.hpp"
35 #include "runtime/stubRoutines.hpp"
36 #include "runtime/synchronizer.hpp"
37
38 #ifndef CC_INTERP
39 #define __ _masm->
40
41 // Misc helpers
42
43 // Do an oop store like *(base + index + offset) = val
44 // index can be noreg,
45 static void do_oop_store(InterpreterMacroAssembler* _masm,
46 Register base,
47 Register index,
48 int offset,
49 Register val,
50 Register tmp,
51 BarrierSet::Name barrier,
52 bool precise) {
53 assert(tmp != val && tmp != base && tmp != index, "register collision");
54 assert(index == noreg || offset == 0, "only one offset");
55 switch (barrier) {
56 #ifndef SERIALGC
57 case BarrierSet::G1SATBCT:
58 case BarrierSet::G1SATBCTLogging:
59 {
60 // Load and record the previous value.
61 __ g1_write_barrier_pre(base, index, offset,
62 noreg /* pre_val */,
63 tmp, true /*preserve_o_regs*/);
64
65 if (index == noreg ) {
66 assert(Assembler::is_simm13(offset), "fix this code");
67 __ store_heap_oop(val, base, offset);
68 } else {
69 __ store_heap_oop(val, base, index);
70 }
71
72 // No need for post barrier if storing NULL
73 if (val != G0) {
74 if (precise) {
75 if (index == noreg) {
76 __ add(base, offset, base);
77 } else {
78 __ add(base, index, base);
79 }
80 }
81 __ g1_write_barrier_post(base, val, tmp);
82 }
83 }
84 break;
85 #endif // SERIALGC
86 case BarrierSet::CardTableModRef:
87 case BarrierSet::CardTableExtension:
88 {
89 if (index == noreg ) {
90 assert(Assembler::is_simm13(offset), "fix this code");
91 __ store_heap_oop(val, base, offset);
92 } else {
93 __ store_heap_oop(val, base, index);
94 }
95 // No need for post barrier if storing NULL
96 if (val != G0) {
97 if (precise) {
98 if (index == noreg) {
99 __ add(base, offset, base);
100 } else {
101 __ add(base, index, base);
102 }
103 }
104 __ card_write_barrier_post(base, val, tmp);
105 }
106 }
107 break;
108 case BarrierSet::ModRef:
109 case BarrierSet::Other:
110 ShouldNotReachHere();
111 break;
112 default :
113 ShouldNotReachHere();
114
115 }
116 }
117
118
119 //----------------------------------------------------------------------------------------------------
120 // Platform-dependent initialization
121
122 void TemplateTable::pd_initialize() {
123 // (none)
124 }
125
126
127 //----------------------------------------------------------------------------------------------------
128 // Condition conversion
129 Assembler::Condition ccNot(TemplateTable::Condition cc) {
130 switch (cc) {
131 case TemplateTable::equal : return Assembler::notEqual;
132 case TemplateTable::not_equal : return Assembler::equal;
133 case TemplateTable::less : return Assembler::greaterEqual;
134 case TemplateTable::less_equal : return Assembler::greater;
135 case TemplateTable::greater : return Assembler::lessEqual;
136 case TemplateTable::greater_equal: return Assembler::less;
137 }
138 ShouldNotReachHere();
139 return Assembler::zero;
140 }
141
142 //----------------------------------------------------------------------------------------------------
143 // Miscelaneous helper routines
144
145
146 Address TemplateTable::at_bcp(int offset) {
147 assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
148 return Address(Lbcp, offset);
149 }
150
151
152 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register Rbyte_code,
153 Register Rscratch,
154 bool load_bc_into_scratch /*=true*/) {
155 // With sharing on, may need to test methodOop flag.
156 if (!RewriteBytecodes) return;
157 if (load_bc_into_scratch) __ set(bc, Rbyte_code);
158 Label patch_done;
159 if (JvmtiExport::can_post_breakpoint()) {
160 Label fast_patch;
161 __ ldub(at_bcp(0), Rscratch);
162 __ cmp(Rscratch, Bytecodes::_breakpoint);
163 __ br(Assembler::notEqual, false, Assembler::pt, fast_patch);
164 __ delayed()->nop(); // don't bother to hoist the stb here
165 // perform the quickening, slowly, in the bowels of the breakpoint table
166 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), Lmethod, Lbcp, Rbyte_code);
167 __ ba(false, patch_done);
168 __ delayed()->nop();
169 __ bind(fast_patch);
170 }
171 #ifdef ASSERT
172 Bytecodes::Code orig_bytecode = Bytecodes::java_code(bc);
173 Label okay;
174 __ ldub(at_bcp(0), Rscratch);
175 __ cmp(Rscratch, orig_bytecode);
176 __ br(Assembler::equal, false, Assembler::pt, okay);
177 __ delayed() ->cmp(Rscratch, Rbyte_code);
178 __ br(Assembler::equal, false, Assembler::pt, okay);
179 __ delayed()->nop();
180 __ stop("Rewriting wrong bytecode location");
181 __ bind(okay);
182 #endif
183 __ stb(Rbyte_code, at_bcp(0));
184 __ bind(patch_done);
185 }
186
187 //----------------------------------------------------------------------------------------------------
188 // Individual instructions
189
190 void TemplateTable::nop() {
191 transition(vtos, vtos);
192 // nothing to do
193 }
194
195 void TemplateTable::shouldnotreachhere() {
196 transition(vtos, vtos);
197 __ stop("shouldnotreachhere bytecode");
198 }
199
200 void TemplateTable::aconst_null() {
201 transition(vtos, atos);
202 __ clr(Otos_i);
203 }
204
205
206 void TemplateTable::iconst(int value) {
207 transition(vtos, itos);
208 __ set(value, Otos_i);
209 }
210
211
212 void TemplateTable::lconst(int value) {
213 transition(vtos, ltos);
214 assert(value >= 0, "check this code");
215 #ifdef _LP64
216 __ set(value, Otos_l);
217 #else
218 __ set(value, Otos_l2);
219 __ clr( Otos_l1);
220 #endif
221 }
222
223
224 void TemplateTable::fconst(int value) {
225 transition(vtos, ftos);
226 static float zero = 0.0, one = 1.0, two = 2.0;
227 float* p;
228 switch( value ) {
229 default: ShouldNotReachHere();
230 case 0: p = &zero; break;
231 case 1: p = &one; break;
232 case 2: p = &two; break;
233 }
234 AddressLiteral a(p);
235 __ sethi(a, G3_scratch);
236 __ ldf(FloatRegisterImpl::S, G3_scratch, a.low10(), Ftos_f);
237 }
238
239
240 void TemplateTable::dconst(int value) {
241 transition(vtos, dtos);
242 static double zero = 0.0, one = 1.0;
243 double* p;
244 switch( value ) {
245 default: ShouldNotReachHere();
246 case 0: p = &zero; break;
247 case 1: p = &one; break;
248 }
249 AddressLiteral a(p);
250 __ sethi(a, G3_scratch);
251 __ ldf(FloatRegisterImpl::D, G3_scratch, a.low10(), Ftos_d);
252 }
253
254
255 // %%%%% Should factore most snippet templates across platforms
256
257 void TemplateTable::bipush() {
258 transition(vtos, itos);
259 __ ldsb( at_bcp(1), Otos_i );
260 }
261
262 void TemplateTable::sipush() {
263 transition(vtos, itos);
264 __ get_2_byte_integer_at_bcp(1, G3_scratch, Otos_i, InterpreterMacroAssembler::Signed);
265 }
266
267 void TemplateTable::ldc(bool wide) {
268 transition(vtos, vtos);
269 Label call_ldc, notInt, notString, notClass, exit;
270
271 if (wide) {
272 __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
273 } else {
274 __ ldub(Lbcp, 1, O1);
275 }
276 __ get_cpool_and_tags(O0, O2);
277
278 const int base_offset = constantPoolOopDesc::header_size() * wordSize;
279 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize;
280
281 // get type from tags
282 __ add(O2, tags_offset, O2);
283 __ ldub(O2, O1, O2);
284 __ cmp(O2, JVM_CONSTANT_UnresolvedString); // unresolved string? If so, must resolve
285 __ brx(Assembler::equal, true, Assembler::pt, call_ldc);
286 __ delayed()->nop();
287
288 __ cmp(O2, JVM_CONSTANT_UnresolvedClass); // unresolved class? If so, must resolve
289 __ brx(Assembler::equal, true, Assembler::pt, call_ldc);
290 __ delayed()->nop();
291
292 __ cmp(O2, JVM_CONSTANT_UnresolvedClassInError); // unresolved class in error state
293 __ brx(Assembler::equal, true, Assembler::pn, call_ldc);
294 __ delayed()->nop();
295
296 __ cmp(O2, JVM_CONSTANT_Class); // need to call vm to get java mirror of the class
297 __ brx(Assembler::notEqual, true, Assembler::pt, notClass);
298 __ delayed()->add(O0, base_offset, O0);
299
300 __ bind(call_ldc);
301 __ set(wide, O1);
302 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), O1);
303 __ push(atos);
304 __ ba(false, exit);
305 __ delayed()->nop();
306
307 __ bind(notClass);
308 // __ add(O0, base_offset, O0);
309 __ sll(O1, LogBytesPerWord, O1);
310 __ cmp(O2, JVM_CONSTANT_Integer);
311 __ brx(Assembler::notEqual, true, Assembler::pt, notInt);
312 __ delayed()->cmp(O2, JVM_CONSTANT_String);
313 __ ld(O0, O1, Otos_i);
314 __ push(itos);
315 __ ba(false, exit);
316 __ delayed()->nop();
317
318 __ bind(notInt);
319 // __ cmp(O2, JVM_CONSTANT_String);
320 __ brx(Assembler::notEqual, true, Assembler::pt, notString);
321 __ delayed()->ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
322 __ ld_ptr(O0, O1, Otos_i);
323 __ verify_oop(Otos_i);
324 __ push(atos);
325 __ ba(false, exit);
326 __ delayed()->nop();
327
328 __ bind(notString);
329 // __ ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
330 __ push(ftos);
331
332 __ bind(exit);
333 }
334
335 // Fast path for caching oop constants.
336 // %%% We should use this to handle Class and String constants also.
337 // %%% It will simplify the ldc/primitive path considerably.
338 void TemplateTable::fast_aldc(bool wide) {
339 transition(vtos, atos);
340
341 if (!EnableMethodHandles) {
342 // We should not encounter this bytecode if !EnableMethodHandles.
343 // The verifier will stop it. However, if we get past the verifier,
344 // this will stop the thread in a reasonable way, without crashing the JVM.
345 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
346 InterpreterRuntime::throw_IncompatibleClassChangeError));
347 // the call_VM checks for exception, so we should never return here.
348 __ should_not_reach_here();
349 return;
350 }
351
352 Register Rcache = G3_scratch;
353 Register Rscratch = G4_scratch;
354
355 resolve_cache_and_index(f1_oop, Otos_i, Rcache, Rscratch, wide ? sizeof(u2) : sizeof(u1));
356
357 __ verify_oop(Otos_i);
358
359 Label L_done;
360 const Register Rcon_klass = G3_scratch; // same as Rcache
361 const Register Rarray_klass = G4_scratch; // same as Rscratch
362 __ load_klass(Otos_i, Rcon_klass);
363 AddressLiteral array_klass_addr((address)Universe::systemObjArrayKlassObj_addr());
364 __ load_contents(array_klass_addr, Rarray_klass);
365 __ cmp(Rarray_klass, Rcon_klass);
366 __ brx(Assembler::notEqual, false, Assembler::pt, L_done);
367 __ delayed()->nop();
368 __ ld(Address(Otos_i, arrayOopDesc::length_offset_in_bytes()), Rcon_klass);
369 __ tst(Rcon_klass);
370 __ brx(Assembler::zero, true, Assembler::pt, L_done);
371 __ delayed()->clr(Otos_i); // executed only if branch is taken
372
373 // Load the exception from the system-array which wraps it:
374 __ load_heap_oop(Otos_i, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i);
375 __ throw_if_not_x(Assembler::never, Interpreter::throw_exception_entry(), G3_scratch);
376
377 __ bind(L_done);
378 }
379
380 void TemplateTable::ldc2_w() {
381 transition(vtos, vtos);
382 Label retry, resolved, Long, exit;
383
384 __ bind(retry);
385 __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
386 __ get_cpool_and_tags(O0, O2);
387
388 const int base_offset = constantPoolOopDesc::header_size() * wordSize;
389 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize;
390 // get type from tags
391 __ add(O2, tags_offset, O2);
392 __ ldub(O2, O1, O2);
393
394 __ sll(O1, LogBytesPerWord, O1);
395 __ add(O0, O1, G3_scratch);
396
397 __ cmp(O2, JVM_CONSTANT_Double);
398 __ brx(Assembler::notEqual, false, Assembler::pt, Long);
399 __ delayed()->nop();
400 // A double can be placed at word-aligned locations in the constant pool.
401 // Check out Conversions.java for an example.
402 // Also constantPoolOopDesc::header_size() is 20, which makes it very difficult
403 // to double-align double on the constant pool. SG, 11/7/97
404 #ifdef _LP64
405 __ ldf(FloatRegisterImpl::D, G3_scratch, base_offset, Ftos_d);
406 #else
407 FloatRegister f = Ftos_d;
408 __ ldf(FloatRegisterImpl::S, G3_scratch, base_offset, f);
409 __ ldf(FloatRegisterImpl::S, G3_scratch, base_offset + sizeof(jdouble)/2,
410 f->successor());
411 #endif
412 __ push(dtos);
413 __ ba(false, exit);
414 __ delayed()->nop();
415
416 __ bind(Long);
417 #ifdef _LP64
418 __ ldx(G3_scratch, base_offset, Otos_l);
419 #else
420 __ ld(G3_scratch, base_offset, Otos_l);
421 __ ld(G3_scratch, base_offset + sizeof(jlong)/2, Otos_l->successor());
422 #endif
423 __ push(ltos);
424
425 __ bind(exit);
426 }
427
428
429 void TemplateTable::locals_index(Register reg, int offset) {
430 __ ldub( at_bcp(offset), reg );
431 }
432
433
434 void TemplateTable::locals_index_wide(Register reg) {
435 // offset is 2, not 1, because Lbcp points to wide prefix code
436 __ get_2_byte_integer_at_bcp(2, G4_scratch, reg, InterpreterMacroAssembler::Unsigned);
437 }
438
439 void TemplateTable::iload() {
440 transition(vtos, itos);
441 // Rewrite iload,iload pair into fast_iload2
442 // iload,caload pair into fast_icaload
443 if (RewriteFrequentPairs) {
444 Label rewrite, done;
445
446 // get next byte
447 __ ldub(at_bcp(Bytecodes::length_for(Bytecodes::_iload)), G3_scratch);
448
449 // if _iload, wait to rewrite to iload2. We only want to rewrite the
450 // last two iloads in a pair. Comparing against fast_iload means that
451 // the next bytecode is neither an iload or a caload, and therefore
452 // an iload pair.
453 __ cmp(G3_scratch, (int)Bytecodes::_iload);
454 __ br(Assembler::equal, false, Assembler::pn, done);
455 __ delayed()->nop();
456
457 __ cmp(G3_scratch, (int)Bytecodes::_fast_iload);
458 __ br(Assembler::equal, false, Assembler::pn, rewrite);
459 __ delayed()->set(Bytecodes::_fast_iload2, G4_scratch);
460
461 __ cmp(G3_scratch, (int)Bytecodes::_caload);
462 __ br(Assembler::equal, false, Assembler::pn, rewrite);
463 __ delayed()->set(Bytecodes::_fast_icaload, G4_scratch);
464
465 __ set(Bytecodes::_fast_iload, G4_scratch); // don't check again
466 // rewrite
467 // G4_scratch: fast bytecode
468 __ bind(rewrite);
469 patch_bytecode(Bytecodes::_iload, G4_scratch, G3_scratch, false);
470 __ bind(done);
471 }
472
473 // Get the local value into tos
474 locals_index(G3_scratch);
475 __ access_local_int( G3_scratch, Otos_i );
476 }
477
478 void TemplateTable::fast_iload2() {
479 transition(vtos, itos);
480 locals_index(G3_scratch);
481 __ access_local_int( G3_scratch, Otos_i );
482 __ push_i();
483 locals_index(G3_scratch, 3); // get next bytecode's local index.
484 __ access_local_int( G3_scratch, Otos_i );
485 }
486
487 void TemplateTable::fast_iload() {
488 transition(vtos, itos);
489 locals_index(G3_scratch);
490 __ access_local_int( G3_scratch, Otos_i );
491 }
492
493 void TemplateTable::lload() {
494 transition(vtos, ltos);
495 locals_index(G3_scratch);
496 __ access_local_long( G3_scratch, Otos_l );
497 }
498
499
500 void TemplateTable::fload() {
501 transition(vtos, ftos);
502 locals_index(G3_scratch);
503 __ access_local_float( G3_scratch, Ftos_f );
504 }
505
506
507 void TemplateTable::dload() {
508 transition(vtos, dtos);
509 locals_index(G3_scratch);
510 __ access_local_double( G3_scratch, Ftos_d );
511 }
512
513
514 void TemplateTable::aload() {
515 transition(vtos, atos);
516 locals_index(G3_scratch);
517 __ access_local_ptr( G3_scratch, Otos_i);
518 }
519
520
521 void TemplateTable::wide_iload() {
522 transition(vtos, itos);
523 locals_index_wide(G3_scratch);
524 __ access_local_int( G3_scratch, Otos_i );
525 }
526
527
528 void TemplateTable::wide_lload() {
529 transition(vtos, ltos);
530 locals_index_wide(G3_scratch);
531 __ access_local_long( G3_scratch, Otos_l );
532 }
533
534
535 void TemplateTable::wide_fload() {
536 transition(vtos, ftos);
537 locals_index_wide(G3_scratch);
538 __ access_local_float( G3_scratch, Ftos_f );
539 }
540
541
542 void TemplateTable::wide_dload() {
543 transition(vtos, dtos);
544 locals_index_wide(G3_scratch);
545 __ access_local_double( G3_scratch, Ftos_d );
546 }
547
548
549 void TemplateTable::wide_aload() {
550 transition(vtos, atos);
551 locals_index_wide(G3_scratch);
552 __ access_local_ptr( G3_scratch, Otos_i );
553 __ verify_oop(Otos_i);
554 }
555
556
557 void TemplateTable::iaload() {
558 transition(itos, itos);
559 // Otos_i: index
560 // tos: array
561 __ index_check(O2, Otos_i, LogBytesPerInt, G3_scratch, O3);
562 __ ld(O3, arrayOopDesc::base_offset_in_bytes(T_INT), Otos_i);
563 }
564
565
566 void TemplateTable::laload() {
567 transition(itos, ltos);
568 // Otos_i: index
569 // O2: array
570 __ index_check(O2, Otos_i, LogBytesPerLong, G3_scratch, O3);
571 __ ld_long(O3, arrayOopDesc::base_offset_in_bytes(T_LONG), Otos_l);
572 }
573
574
575 void TemplateTable::faload() {
576 transition(itos, ftos);
577 // Otos_i: index
578 // O2: array
579 __ index_check(O2, Otos_i, LogBytesPerInt, G3_scratch, O3);
580 __ ldf(FloatRegisterImpl::S, O3, arrayOopDesc::base_offset_in_bytes(T_FLOAT), Ftos_f);
581 }
582
583
584 void TemplateTable::daload() {
585 transition(itos, dtos);
586 // Otos_i: index
587 // O2: array
588 __ index_check(O2, Otos_i, LogBytesPerLong, G3_scratch, O3);
589 __ ldf(FloatRegisterImpl::D, O3, arrayOopDesc::base_offset_in_bytes(T_DOUBLE), Ftos_d);
590 }
591
592
593 void TemplateTable::aaload() {
594 transition(itos, atos);
595 // Otos_i: index
596 // tos: array
597 __ index_check(O2, Otos_i, UseCompressedOops ? 2 : LogBytesPerWord, G3_scratch, O3);
598 __ load_heap_oop(O3, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i);
599 __ verify_oop(Otos_i);
600 }
601
602
603 void TemplateTable::baload() {
604 transition(itos, itos);
605 // Otos_i: index
606 // tos: array
607 __ index_check(O2, Otos_i, 0, G3_scratch, O3);
608 __ ldsb(O3, arrayOopDesc::base_offset_in_bytes(T_BYTE), Otos_i);
609 }
610
611
612 void TemplateTable::caload() {
613 transition(itos, itos);
614 // Otos_i: index
615 // tos: array
616 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
617 __ lduh(O3, arrayOopDesc::base_offset_in_bytes(T_CHAR), Otos_i);
618 }
619
620 void TemplateTable::fast_icaload() {
621 transition(vtos, itos);
622 // Otos_i: index
623 // tos: array
624 locals_index(G3_scratch);
625 __ access_local_int( G3_scratch, Otos_i );
626 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
627 __ lduh(O3, arrayOopDesc::base_offset_in_bytes(T_CHAR), Otos_i);
628 }
629
630
631 void TemplateTable::saload() {
632 transition(itos, itos);
633 // Otos_i: index
634 // tos: array
635 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
636 __ ldsh(O3, arrayOopDesc::base_offset_in_bytes(T_SHORT), Otos_i);
637 }
638
639
640 void TemplateTable::iload(int n) {
641 transition(vtos, itos);
642 __ ld( Llocals, Interpreter::local_offset_in_bytes(n), Otos_i );
643 }
644
645
646 void TemplateTable::lload(int n) {
647 transition(vtos, ltos);
648 assert(n+1 < Argument::n_register_parameters, "would need more code");
649 __ load_unaligned_long(Llocals, Interpreter::local_offset_in_bytes(n+1), Otos_l);
650 }
651
652
653 void TemplateTable::fload(int n) {
654 transition(vtos, ftos);
655 assert(n < Argument::n_register_parameters, "would need more code");
656 __ ldf( FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(n), Ftos_f );
657 }
658
659
660 void TemplateTable::dload(int n) {
661 transition(vtos, dtos);
662 FloatRegister dst = Ftos_d;
663 __ load_unaligned_double(Llocals, Interpreter::local_offset_in_bytes(n+1), dst);
664 }
665
666
667 void TemplateTable::aload(int n) {
668 transition(vtos, atos);
669 __ ld_ptr( Llocals, Interpreter::local_offset_in_bytes(n), Otos_i );
670 }
671
672
673 void TemplateTable::aload_0() {
674 transition(vtos, atos);
675
676 // According to bytecode histograms, the pairs:
677 //
678 // _aload_0, _fast_igetfield (itos)
679 // _aload_0, _fast_agetfield (atos)
680 // _aload_0, _fast_fgetfield (ftos)
681 //
682 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0
683 // bytecode checks the next bytecode and then rewrites the current
684 // bytecode into a pair bytecode; otherwise it rewrites the current
685 // bytecode into _fast_aload_0 that doesn't do the pair check anymore.
686 //
687 if (RewriteFrequentPairs) {
688 Label rewrite, done;
689
690 // get next byte
691 __ ldub(at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)), G3_scratch);
692
693 // do actual aload_0
694 aload(0);
695
696 // if _getfield then wait with rewrite
697 __ cmp(G3_scratch, (int)Bytecodes::_getfield);
698 __ br(Assembler::equal, false, Assembler::pn, done);
699 __ delayed()->nop();
700
701 // if _igetfield then rewrite to _fast_iaccess_0
702 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
703 __ cmp(G3_scratch, (int)Bytecodes::_fast_igetfield);
704 __ br(Assembler::equal, false, Assembler::pn, rewrite);
705 __ delayed()->set(Bytecodes::_fast_iaccess_0, G4_scratch);
706
707 // if _agetfield then rewrite to _fast_aaccess_0
708 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
709 __ cmp(G3_scratch, (int)Bytecodes::_fast_agetfield);
710 __ br(Assembler::equal, false, Assembler::pn, rewrite);
711 __ delayed()->set(Bytecodes::_fast_aaccess_0, G4_scratch);
712
713 // if _fgetfield then rewrite to _fast_faccess_0
714 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
715 __ cmp(G3_scratch, (int)Bytecodes::_fast_fgetfield);
716 __ br(Assembler::equal, false, Assembler::pn, rewrite);
717 __ delayed()->set(Bytecodes::_fast_faccess_0, G4_scratch);
718
719 // else rewrite to _fast_aload0
720 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
721 __ set(Bytecodes::_fast_aload_0, G4_scratch);
722
723 // rewrite
724 // G4_scratch: fast bytecode
725 __ bind(rewrite);
726 patch_bytecode(Bytecodes::_aload_0, G4_scratch, G3_scratch, false);
727 __ bind(done);
728 } else {
729 aload(0);
730 }
731 }
732
733
734 void TemplateTable::istore() {
735 transition(itos, vtos);
736 locals_index(G3_scratch);
737 __ store_local_int( G3_scratch, Otos_i );
738 }
739
740
741 void TemplateTable::lstore() {
742 transition(ltos, vtos);
743 locals_index(G3_scratch);
744 __ store_local_long( G3_scratch, Otos_l );
745 }
746
747
748 void TemplateTable::fstore() {
749 transition(ftos, vtos);
750 locals_index(G3_scratch);
751 __ store_local_float( G3_scratch, Ftos_f );
752 }
753
754
755 void TemplateTable::dstore() {
756 transition(dtos, vtos);
757 locals_index(G3_scratch);
758 __ store_local_double( G3_scratch, Ftos_d );
759 }
760
761
762 void TemplateTable::astore() {
763 transition(vtos, vtos);
764 __ load_ptr(0, Otos_i);
765 __ inc(Lesp, Interpreter::stackElementSize);
766 __ verify_oop_or_return_address(Otos_i, G3_scratch);
767 locals_index(G3_scratch);
768 __ store_local_ptr(G3_scratch, Otos_i);
769 }
770
771
772 void TemplateTable::wide_istore() {
773 transition(vtos, vtos);
774 __ pop_i();
775 locals_index_wide(G3_scratch);
776 __ store_local_int( G3_scratch, Otos_i );
777 }
778
779
780 void TemplateTable::wide_lstore() {
781 transition(vtos, vtos);
782 __ pop_l();
783 locals_index_wide(G3_scratch);
784 __ store_local_long( G3_scratch, Otos_l );
785 }
786
787
788 void TemplateTable::wide_fstore() {
789 transition(vtos, vtos);
790 __ pop_f();
791 locals_index_wide(G3_scratch);
792 __ store_local_float( G3_scratch, Ftos_f );
793 }
794
795
796 void TemplateTable::wide_dstore() {
797 transition(vtos, vtos);
798 __ pop_d();
799 locals_index_wide(G3_scratch);
800 __ store_local_double( G3_scratch, Ftos_d );
801 }
802
803
804 void TemplateTable::wide_astore() {
805 transition(vtos, vtos);
806 __ load_ptr(0, Otos_i);
807 __ inc(Lesp, Interpreter::stackElementSize);
808 __ verify_oop_or_return_address(Otos_i, G3_scratch);
809 locals_index_wide(G3_scratch);
810 __ store_local_ptr(G3_scratch, Otos_i);
811 }
812
813
814 void TemplateTable::iastore() {
815 transition(itos, vtos);
816 __ pop_i(O2); // index
817 // Otos_i: val
818 // O3: array
819 __ index_check(O3, O2, LogBytesPerInt, G3_scratch, O2);
820 __ st(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_INT));
821 }
822
823
824 void TemplateTable::lastore() {
825 transition(ltos, vtos);
826 __ pop_i(O2); // index
827 // Otos_l: val
828 // O3: array
829 __ index_check(O3, O2, LogBytesPerLong, G3_scratch, O2);
830 __ st_long(Otos_l, O2, arrayOopDesc::base_offset_in_bytes(T_LONG));
831 }
832
833
834 void TemplateTable::fastore() {
835 transition(ftos, vtos);
836 __ pop_i(O2); // index
837 // Ftos_f: val
838 // O3: array
839 __ index_check(O3, O2, LogBytesPerInt, G3_scratch, O2);
840 __ stf(FloatRegisterImpl::S, Ftos_f, O2, arrayOopDesc::base_offset_in_bytes(T_FLOAT));
841 }
842
843
844 void TemplateTable::dastore() {
845 transition(dtos, vtos);
846 __ pop_i(O2); // index
847 // Fos_d: val
848 // O3: array
849 __ index_check(O3, O2, LogBytesPerLong, G3_scratch, O2);
850 __ stf(FloatRegisterImpl::D, Ftos_d, O2, arrayOopDesc::base_offset_in_bytes(T_DOUBLE));
851 }
852
853
854 void TemplateTable::aastore() {
855 Label store_ok, is_null, done;
856 transition(vtos, vtos);
857 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
858 __ ld(Lesp, Interpreter::expr_offset_in_bytes(1), O2); // get index
859 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(2), O3); // get array
860 // Otos_i: val
861 // O2: index
862 // O3: array
863 __ verify_oop(Otos_i);
864 __ index_check_without_pop(O3, O2, UseCompressedOops ? 2 : LogBytesPerWord, G3_scratch, O1);
865
866 // do array store check - check for NULL value first
867 __ br_null( Otos_i, false, Assembler::pn, is_null );
868 __ delayed()->nop();
869
870 __ load_klass(O3, O4); // get array klass
871 __ load_klass(Otos_i, O5); // get value klass
872
873 // do fast instanceof cache test
874
875 __ ld_ptr(O4, sizeof(oopDesc) + objArrayKlass::element_klass_offset_in_bytes(), O4);
876
877 assert(Otos_i == O0, "just checking");
878
879 // Otos_i: value
880 // O1: addr - offset
881 // O2: index
882 // O3: array
883 // O4: array element klass
884 // O5: value klass
885
886 // Address element(O1, 0, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
887
888 // Generate a fast subtype check. Branch to store_ok if no
889 // failure. Throw if failure.
890 __ gen_subtype_check( O5, O4, G3_scratch, G4_scratch, G1_scratch, store_ok );
891
892 // Not a subtype; so must throw exception
893 __ throw_if_not_x( Assembler::never, Interpreter::_throw_ArrayStoreException_entry, G3_scratch );
894
895 // Store is OK.
896 __ bind(store_ok);
897 do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i, G3_scratch, _bs->kind(), true);
898
899 __ ba(false,done);
900 __ delayed()->inc(Lesp, 3* Interpreter::stackElementSize); // adj sp (pops array, index and value)
901
902 __ bind(is_null);
903 do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), G0, G4_scratch, _bs->kind(), true);
904
905 __ profile_null_seen(G3_scratch);
906 __ inc(Lesp, 3* Interpreter::stackElementSize); // adj sp (pops array, index and value)
907 __ bind(done);
908 }
909
910
911 void TemplateTable::bastore() {
912 transition(itos, vtos);
913 __ pop_i(O2); // index
914 // Otos_i: val
915 // O3: array
916 __ index_check(O3, O2, 0, G3_scratch, O2);
917 __ stb(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_BYTE));
918 }
919
920
921 void TemplateTable::castore() {
922 transition(itos, vtos);
923 __ pop_i(O2); // index
924 // Otos_i: val
925 // O3: array
926 __ index_check(O3, O2, LogBytesPerShort, G3_scratch, O2);
927 __ sth(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_CHAR));
928 }
929
930
931 void TemplateTable::sastore() {
932 // %%%%% Factor across platform
933 castore();
934 }
935
936
937 void TemplateTable::istore(int n) {
938 transition(itos, vtos);
939 __ st(Otos_i, Llocals, Interpreter::local_offset_in_bytes(n));
940 }
941
942
943 void TemplateTable::lstore(int n) {
944 transition(ltos, vtos);
945 assert(n+1 < Argument::n_register_parameters, "only handle register cases");
946 __ store_unaligned_long(Otos_l, Llocals, Interpreter::local_offset_in_bytes(n+1));
947
948 }
949
950
951 void TemplateTable::fstore(int n) {
952 transition(ftos, vtos);
953 assert(n < Argument::n_register_parameters, "only handle register cases");
954 __ stf(FloatRegisterImpl::S, Ftos_f, Llocals, Interpreter::local_offset_in_bytes(n));
955 }
956
957
958 void TemplateTable::dstore(int n) {
959 transition(dtos, vtos);
960 FloatRegister src = Ftos_d;
961 __ store_unaligned_double(src, Llocals, Interpreter::local_offset_in_bytes(n+1));
962 }
963
964
965 void TemplateTable::astore(int n) {
966 transition(vtos, vtos);
967 __ load_ptr(0, Otos_i);
968 __ inc(Lesp, Interpreter::stackElementSize);
969 __ verify_oop_or_return_address(Otos_i, G3_scratch);
970 __ store_local_ptr(n, Otos_i);
971 }
972
973
974 void TemplateTable::pop() {
975 transition(vtos, vtos);
976 __ inc(Lesp, Interpreter::stackElementSize);
977 }
978
979
980 void TemplateTable::pop2() {
981 transition(vtos, vtos);
982 __ inc(Lesp, 2 * Interpreter::stackElementSize);
983 }
984
985
986 void TemplateTable::dup() {
987 transition(vtos, vtos);
988 // stack: ..., a
989 // load a and tag
990 __ load_ptr(0, Otos_i);
991 __ push_ptr(Otos_i);
992 // stack: ..., a, a
993 }
994
995
996 void TemplateTable::dup_x1() {
997 transition(vtos, vtos);
998 // stack: ..., a, b
999 __ load_ptr( 1, G3_scratch); // get a
1000 __ load_ptr( 0, Otos_l1); // get b
1001 __ store_ptr(1, Otos_l1); // put b
1002 __ store_ptr(0, G3_scratch); // put a - like swap
1003 __ push_ptr(Otos_l1); // push b
1004 // stack: ..., b, a, b
1005 }
1006
1007
1008 void TemplateTable::dup_x2() {
1009 transition(vtos, vtos);
1010 // stack: ..., a, b, c
1011 // get c and push on stack, reuse registers
1012 __ load_ptr( 0, G3_scratch); // get c
1013 __ push_ptr(G3_scratch); // push c with tag
1014 // stack: ..., a, b, c, c (c in reg) (Lesp - 4)
1015 // (stack offsets n+1 now)
1016 __ load_ptr( 3, Otos_l1); // get a
1017 __ store_ptr(3, G3_scratch); // put c at 3
1018 // stack: ..., c, b, c, c (a in reg)
1019 __ load_ptr( 2, G3_scratch); // get b
1020 __ store_ptr(2, Otos_l1); // put a at 2
1021 // stack: ..., c, a, c, c (b in reg)
1022 __ store_ptr(1, G3_scratch); // put b at 1
1023 // stack: ..., c, a, b, c
1024 }
1025
1026
1027 void TemplateTable::dup2() {
1028 transition(vtos, vtos);
1029 __ load_ptr(1, G3_scratch); // get a
1030 __ load_ptr(0, Otos_l1); // get b
1031 __ push_ptr(G3_scratch); // push a
1032 __ push_ptr(Otos_l1); // push b
1033 // stack: ..., a, b, a, b
1034 }
1035
1036
1037 void TemplateTable::dup2_x1() {
1038 transition(vtos, vtos);
1039 // stack: ..., a, b, c
1040 __ load_ptr( 1, Lscratch); // get b
1041 __ load_ptr( 2, Otos_l1); // get a
1042 __ store_ptr(2, Lscratch); // put b at a
1043 // stack: ..., b, b, c
1044 __ load_ptr( 0, G3_scratch); // get c
1045 __ store_ptr(1, G3_scratch); // put c at b
1046 // stack: ..., b, c, c
1047 __ store_ptr(0, Otos_l1); // put a at c
1048 // stack: ..., b, c, a
1049 __ push_ptr(Lscratch); // push b
1050 __ push_ptr(G3_scratch); // push c
1051 // stack: ..., b, c, a, b, c
1052 }
1053
1054
1055 // The spec says that these types can be a mixture of category 1 (1 word)
1056 // types and/or category 2 types (long and doubles)
1057 void TemplateTable::dup2_x2() {
1058 transition(vtos, vtos);
1059 // stack: ..., a, b, c, d
1060 __ load_ptr( 1, Lscratch); // get c
1061 __ load_ptr( 3, Otos_l1); // get a
1062 __ store_ptr(3, Lscratch); // put c at 3
1063 __ store_ptr(1, Otos_l1); // put a at 1
1064 // stack: ..., c, b, a, d
1065 __ load_ptr( 2, G3_scratch); // get b
1066 __ load_ptr( 0, Otos_l1); // get d
1067 __ store_ptr(0, G3_scratch); // put b at 0
1068 __ store_ptr(2, Otos_l1); // put d at 2
1069 // stack: ..., c, d, a, b
1070 __ push_ptr(Lscratch); // push c
1071 __ push_ptr(Otos_l1); // push d
1072 // stack: ..., c, d, a, b, c, d
1073 }
1074
1075
1076 void TemplateTable::swap() {
1077 transition(vtos, vtos);
1078 // stack: ..., a, b
1079 __ load_ptr( 1, G3_scratch); // get a
1080 __ load_ptr( 0, Otos_l1); // get b
1081 __ store_ptr(0, G3_scratch); // put b
1082 __ store_ptr(1, Otos_l1); // put a
1083 // stack: ..., b, a
1084 }
1085
1086
1087 void TemplateTable::iop2(Operation op) {
1088 transition(itos, itos);
1089 __ pop_i(O1);
1090 switch (op) {
1091 case add: __ add(O1, Otos_i, Otos_i); break;
1092 case sub: __ sub(O1, Otos_i, Otos_i); break;
1093 // %%%%% Mul may not exist: better to call .mul?
1094 case mul: __ smul(O1, Otos_i, Otos_i); break;
1095 case _and: __ and3(O1, Otos_i, Otos_i); break;
1096 case _or: __ or3(O1, Otos_i, Otos_i); break;
1097 case _xor: __ xor3(O1, Otos_i, Otos_i); break;
1098 case shl: __ sll(O1, Otos_i, Otos_i); break;
1099 case shr: __ sra(O1, Otos_i, Otos_i); break;
1100 case ushr: __ srl(O1, Otos_i, Otos_i); break;
1101 default: ShouldNotReachHere();
1102 }
1103 }
1104
1105
1106 void TemplateTable::lop2(Operation op) {
1107 transition(ltos, ltos);
1108 __ pop_l(O2);
1109 switch (op) {
1110 #ifdef _LP64
1111 case add: __ add(O2, Otos_l, Otos_l); break;
1112 case sub: __ sub(O2, Otos_l, Otos_l); break;
1113 case _and: __ and3(O2, Otos_l, Otos_l); break;
1114 case _or: __ or3(O2, Otos_l, Otos_l); break;
1115 case _xor: __ xor3(O2, Otos_l, Otos_l); break;
1116 #else
1117 case add: __ addcc(O3, Otos_l2, Otos_l2); __ addc(O2, Otos_l1, Otos_l1); break;
1118 case sub: __ subcc(O3, Otos_l2, Otos_l2); __ subc(O2, Otos_l1, Otos_l1); break;
1119 case _and: __ and3(O3, Otos_l2, Otos_l2); __ and3(O2, Otos_l1, Otos_l1); break;
1120 case _or: __ or3(O3, Otos_l2, Otos_l2); __ or3(O2, Otos_l1, Otos_l1); break;
1121 case _xor: __ xor3(O3, Otos_l2, Otos_l2); __ xor3(O2, Otos_l1, Otos_l1); break;
1122 #endif
1123 default: ShouldNotReachHere();
1124 }
1125 }
1126
1127
1128 void TemplateTable::idiv() {
1129 // %%%%% Later: ForSPARC/V7 call .sdiv library routine,
1130 // %%%%% Use ldsw...sdivx on pure V9 ABI. 64 bit safe.
1131
1132 transition(itos, itos);
1133 __ pop_i(O1); // get 1st op
1134
1135 // Y contains upper 32 bits of result, set it to 0 or all ones
1136 __ wry(G0);
1137 __ mov(~0, G3_scratch);
1138
1139 __ tst(O1);
1140 Label neg;
1141 __ br(Assembler::negative, true, Assembler::pn, neg);
1142 __ delayed()->wry(G3_scratch);
1143 __ bind(neg);
1144
1145 Label ok;
1146 __ tst(Otos_i);
1147 __ throw_if_not_icc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch );
1148
1149 const int min_int = 0x80000000;
1150 Label regular;
1151 __ cmp(Otos_i, -1);
1152 __ br(Assembler::notEqual, false, Assembler::pt, regular);
1153 #ifdef _LP64
1154 // Don't put set in delay slot
1155 // Set will turn into multiple instructions in 64 bit mode
1156 __ delayed()->nop();
1157 __ set(min_int, G4_scratch);
1158 #else
1159 __ delayed()->set(min_int, G4_scratch);
1160 #endif
1161 Label done;
1162 __ cmp(O1, G4_scratch);
1163 __ br(Assembler::equal, true, Assembler::pt, done);
1164 __ delayed()->mov(O1, Otos_i); // (mov only executed if branch taken)
1165
1166 __ bind(regular);
1167 __ sdiv(O1, Otos_i, Otos_i); // note: irem uses O1 after this instruction!
1168 __ bind(done);
1169 }
1170
1171
1172 void TemplateTable::irem() {
1173 transition(itos, itos);
1174 __ mov(Otos_i, O2); // save divisor
1175 idiv(); // %%%% Hack: exploits fact that idiv leaves dividend in O1
1176 __ smul(Otos_i, O2, Otos_i);
1177 __ sub(O1, Otos_i, Otos_i);
1178 }
1179
1180
1181 void TemplateTable::lmul() {
1182 transition(ltos, ltos);
1183 __ pop_l(O2);
1184 #ifdef _LP64
1185 __ mulx(Otos_l, O2, Otos_l);
1186 #else
1187 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::lmul));
1188 #endif
1189
1190 }
1191
1192
1193 void TemplateTable::ldiv() {
1194 transition(ltos, ltos);
1195
1196 // check for zero
1197 __ pop_l(O2);
1198 #ifdef _LP64
1199 __ tst(Otos_l);
1200 __ throw_if_not_xcc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1201 __ sdivx(O2, Otos_l, Otos_l);
1202 #else
1203 __ orcc(Otos_l1, Otos_l2, G0);
1204 __ throw_if_not_icc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1205 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::ldiv));
1206 #endif
1207 }
1208
1209
1210 void TemplateTable::lrem() {
1211 transition(ltos, ltos);
1212
1213 // check for zero
1214 __ pop_l(O2);
1215 #ifdef _LP64
1216 __ tst(Otos_l);
1217 __ throw_if_not_xcc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1218 __ sdivx(O2, Otos_l, Otos_l2);
1219 __ mulx (Otos_l2, Otos_l, Otos_l2);
1220 __ sub (O2, Otos_l2, Otos_l);
1221 #else
1222 __ orcc(Otos_l1, Otos_l2, G0);
1223 __ throw_if_not_icc(Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1224 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::lrem));
1225 #endif
1226 }
1227
1228
1229 void TemplateTable::lshl() {
1230 transition(itos, ltos); // %%%% could optimize, fill delay slot or opt for ultra
1231
1232 __ pop_l(O2); // shift value in O2, O3
1233 #ifdef _LP64
1234 __ sllx(O2, Otos_i, Otos_l);
1235 #else
1236 __ lshl(O2, O3, Otos_i, Otos_l1, Otos_l2, O4);
1237 #endif
1238 }
1239
1240
1241 void TemplateTable::lshr() {
1242 transition(itos, ltos); // %%%% see lshl comment
1243
1244 __ pop_l(O2); // shift value in O2, O3
1245 #ifdef _LP64
1246 __ srax(O2, Otos_i, Otos_l);
1247 #else
1248 __ lshr(O2, O3, Otos_i, Otos_l1, Otos_l2, O4);
1249 #endif
1250 }
1251
1252
1253
1254 void TemplateTable::lushr() {
1255 transition(itos, ltos); // %%%% see lshl comment
1256
1257 __ pop_l(O2); // shift value in O2, O3
1258 #ifdef _LP64
1259 __ srlx(O2, Otos_i, Otos_l);
1260 #else
1261 __ lushr(O2, O3, Otos_i, Otos_l1, Otos_l2, O4);
1262 #endif
1263 }
1264
1265
1266 void TemplateTable::fop2(Operation op) {
1267 transition(ftos, ftos);
1268 switch (op) {
1269 case add: __ pop_f(F4); __ fadd(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1270 case sub: __ pop_f(F4); __ fsub(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1271 case mul: __ pop_f(F4); __ fmul(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1272 case div: __ pop_f(F4); __ fdiv(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1273 case rem:
1274 assert(Ftos_f == F0, "just checking");
1275 #ifdef _LP64
1276 // LP64 calling conventions use F1, F3 for passing 2 floats
1277 __ pop_f(F1);
1278 __ fmov(FloatRegisterImpl::S, Ftos_f, F3);
1279 #else
1280 __ pop_i(O0);
1281 __ stf(FloatRegisterImpl::S, Ftos_f, __ d_tmp);
1282 __ ld( __ d_tmp, O1 );
1283 #endif
1284 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::frem));
1285 assert( Ftos_f == F0, "fix this code" );
1286 break;
1287
1288 default: ShouldNotReachHere();
1289 }
1290 }
1291
1292
1293 void TemplateTable::dop2(Operation op) {
1294 transition(dtos, dtos);
1295 switch (op) {
1296 case add: __ pop_d(F4); __ fadd(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1297 case sub: __ pop_d(F4); __ fsub(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1298 case mul: __ pop_d(F4); __ fmul(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1299 case div: __ pop_d(F4); __ fdiv(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1300 case rem:
1301 #ifdef _LP64
1302 // Pass arguments in D0, D2
1303 __ fmov(FloatRegisterImpl::D, Ftos_f, F2 );
1304 __ pop_d( F0 );
1305 #else
1306 // Pass arguments in O0O1, O2O3
1307 __ stf(FloatRegisterImpl::D, Ftos_f, __ d_tmp);
1308 __ ldd( __ d_tmp, O2 );
1309 __ pop_d(Ftos_f);
1310 __ stf(FloatRegisterImpl::D, Ftos_f, __ d_tmp);
1311 __ ldd( __ d_tmp, O0 );
1312 #endif
1313 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::drem));
1314 assert( Ftos_d == F0, "fix this code" );
1315 break;
1316
1317 default: ShouldNotReachHere();
1318 }
1319 }
1320
1321
1322 void TemplateTable::ineg() {
1323 transition(itos, itos);
1324 __ neg(Otos_i);
1325 }
1326
1327
1328 void TemplateTable::lneg() {
1329 transition(ltos, ltos);
1330 #ifdef _LP64
1331 __ sub(G0, Otos_l, Otos_l);
1332 #else
1333 __ lneg(Otos_l1, Otos_l2);
1334 #endif
1335 }
1336
1337
1338 void TemplateTable::fneg() {
1339 transition(ftos, ftos);
1340 __ fneg(FloatRegisterImpl::S, Ftos_f);
1341 }
1342
1343
1344 void TemplateTable::dneg() {
1345 transition(dtos, dtos);
1346 // v8 has fnegd if source and dest are the same
1347 __ fneg(FloatRegisterImpl::D, Ftos_f);
1348 }
1349
1350
1351 void TemplateTable::iinc() {
1352 transition(vtos, vtos);
1353 locals_index(G3_scratch);
1354 __ ldsb(Lbcp, 2, O2); // load constant
1355 __ access_local_int(G3_scratch, Otos_i);
1356 __ add(Otos_i, O2, Otos_i);
1357 __ st(Otos_i, G3_scratch, 0); // access_local_int puts E.A. in G3_scratch
1358 }
1359
1360
1361 void TemplateTable::wide_iinc() {
1362 transition(vtos, vtos);
1363 locals_index_wide(G3_scratch);
1364 __ get_2_byte_integer_at_bcp( 4, O2, O3, InterpreterMacroAssembler::Signed);
1365 __ access_local_int(G3_scratch, Otos_i);
1366 __ add(Otos_i, O3, Otos_i);
1367 __ st(Otos_i, G3_scratch, 0); // access_local_int puts E.A. in G3_scratch
1368 }
1369
1370
1371 void TemplateTable::convert() {
1372 // %%%%% Factor this first part accross platforms
1373 #ifdef ASSERT
1374 TosState tos_in = ilgl;
1375 TosState tos_out = ilgl;
1376 switch (bytecode()) {
1377 case Bytecodes::_i2l: // fall through
1378 case Bytecodes::_i2f: // fall through
1379 case Bytecodes::_i2d: // fall through
1380 case Bytecodes::_i2b: // fall through
1381 case Bytecodes::_i2c: // fall through
1382 case Bytecodes::_i2s: tos_in = itos; break;
1383 case Bytecodes::_l2i: // fall through
1384 case Bytecodes::_l2f: // fall through
1385 case Bytecodes::_l2d: tos_in = ltos; break;
1386 case Bytecodes::_f2i: // fall through
1387 case Bytecodes::_f2l: // fall through
1388 case Bytecodes::_f2d: tos_in = ftos; break;
1389 case Bytecodes::_d2i: // fall through
1390 case Bytecodes::_d2l: // fall through
1391 case Bytecodes::_d2f: tos_in = dtos; break;
1392 default : ShouldNotReachHere();
1393 }
1394 switch (bytecode()) {
1395 case Bytecodes::_l2i: // fall through
1396 case Bytecodes::_f2i: // fall through
1397 case Bytecodes::_d2i: // fall through
1398 case Bytecodes::_i2b: // fall through
1399 case Bytecodes::_i2c: // fall through
1400 case Bytecodes::_i2s: tos_out = itos; break;
1401 case Bytecodes::_i2l: // fall through
1402 case Bytecodes::_f2l: // fall through
1403 case Bytecodes::_d2l: tos_out = ltos; break;
1404 case Bytecodes::_i2f: // fall through
1405 case Bytecodes::_l2f: // fall through
1406 case Bytecodes::_d2f: tos_out = ftos; break;
1407 case Bytecodes::_i2d: // fall through
1408 case Bytecodes::_l2d: // fall through
1409 case Bytecodes::_f2d: tos_out = dtos; break;
1410 default : ShouldNotReachHere();
1411 }
1412 transition(tos_in, tos_out);
1413 #endif
1414
1415
1416 // Conversion
1417 Label done;
1418 switch (bytecode()) {
1419 case Bytecodes::_i2l:
1420 #ifdef _LP64
1421 // Sign extend the 32 bits
1422 __ sra ( Otos_i, 0, Otos_l );
1423 #else
1424 __ addcc(Otos_i, 0, Otos_l2);
1425 __ br(Assembler::greaterEqual, true, Assembler::pt, done);
1426 __ delayed()->clr(Otos_l1);
1427 __ set(~0, Otos_l1);
1428 #endif
1429 break;
1430
1431 case Bytecodes::_i2f:
1432 __ st(Otos_i, __ d_tmp );
1433 __ ldf(FloatRegisterImpl::S, __ d_tmp, F0);
1434 __ fitof(FloatRegisterImpl::S, F0, Ftos_f);
1435 break;
1436
1437 case Bytecodes::_i2d:
1438 __ st(Otos_i, __ d_tmp);
1439 __ ldf(FloatRegisterImpl::S, __ d_tmp, F0);
1440 __ fitof(FloatRegisterImpl::D, F0, Ftos_f);
1441 break;
1442
1443 case Bytecodes::_i2b:
1444 __ sll(Otos_i, 24, Otos_i);
1445 __ sra(Otos_i, 24, Otos_i);
1446 break;
1447
1448 case Bytecodes::_i2c:
1449 __ sll(Otos_i, 16, Otos_i);
1450 __ srl(Otos_i, 16, Otos_i);
1451 break;
1452
1453 case Bytecodes::_i2s:
1454 __ sll(Otos_i, 16, Otos_i);
1455 __ sra(Otos_i, 16, Otos_i);
1456 break;
1457
1458 case Bytecodes::_l2i:
1459 #ifndef _LP64
1460 __ mov(Otos_l2, Otos_i);
1461 #else
1462 // Sign-extend into the high 32 bits
1463 __ sra(Otos_l, 0, Otos_i);
1464 #endif
1465 break;
1466
1467 case Bytecodes::_l2f:
1468 case Bytecodes::_l2d:
1469 __ st_long(Otos_l, __ d_tmp);
1470 __ ldf(FloatRegisterImpl::D, __ d_tmp, Ftos_d);
1471
1472 if (VM_Version::v9_instructions_work()) {
1473 if (bytecode() == Bytecodes::_l2f) {
1474 __ fxtof(FloatRegisterImpl::S, Ftos_d, Ftos_f);
1475 } else {
1476 __ fxtof(FloatRegisterImpl::D, Ftos_d, Ftos_d);
1477 }
1478 } else {
1479 __ call_VM_leaf(
1480 Lscratch,
1481 bytecode() == Bytecodes::_l2f
1482 ? CAST_FROM_FN_PTR(address, SharedRuntime::l2f)
1483 : CAST_FROM_FN_PTR(address, SharedRuntime::l2d)
1484 );
1485 }
1486 break;
1487
1488 case Bytecodes::_f2i: {
1489 Label isNaN;
1490 // result must be 0 if value is NaN; test by comparing value to itself
1491 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, Ftos_f, Ftos_f);
1492 // According to the v8 manual, you have to have a non-fp instruction
1493 // between fcmp and fb.
1494 if (!VM_Version::v9_instructions_work()) {
1495 __ nop();
1496 }
1497 __ fb(Assembler::f_unordered, true, Assembler::pn, isNaN);
1498 __ delayed()->clr(Otos_i); // NaN
1499 __ ftoi(FloatRegisterImpl::S, Ftos_f, F30);
1500 __ stf(FloatRegisterImpl::S, F30, __ d_tmp);
1501 __ ld(__ d_tmp, Otos_i);
1502 __ bind(isNaN);
1503 }
1504 break;
1505
1506 case Bytecodes::_f2l:
1507 // must uncache tos
1508 __ push_f();
1509 #ifdef _LP64
1510 __ pop_f(F1);
1511 #else
1512 __ pop_i(O0);
1513 #endif
1514 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::f2l));
1515 break;
1516
1517 case Bytecodes::_f2d:
1518 __ ftof( FloatRegisterImpl::S, FloatRegisterImpl::D, Ftos_f, Ftos_f);
1519 break;
1520
1521 case Bytecodes::_d2i:
1522 case Bytecodes::_d2l:
1523 // must uncache tos
1524 __ push_d();
1525 #ifdef _LP64
1526 // LP64 calling conventions pass first double arg in D0
1527 __ pop_d( Ftos_d );
1528 #else
1529 __ pop_i( O0 );
1530 __ pop_i( O1 );
1531 #endif
1532 __ call_VM_leaf(Lscratch,
1533 bytecode() == Bytecodes::_d2i
1534 ? CAST_FROM_FN_PTR(address, SharedRuntime::d2i)
1535 : CAST_FROM_FN_PTR(address, SharedRuntime::d2l));
1536 break;
1537
1538 case Bytecodes::_d2f:
1539 if (VM_Version::v9_instructions_work()) {
1540 __ ftof( FloatRegisterImpl::D, FloatRegisterImpl::S, Ftos_d, Ftos_f);
1541 }
1542 else {
1543 // must uncache tos
1544 __ push_d();
1545 __ pop_i(O0);
1546 __ pop_i(O1);
1547 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::d2f));
1548 }
1549 break;
1550
1551 default: ShouldNotReachHere();
1552 }
1553 __ bind(done);
1554 }
1555
1556
1557 void TemplateTable::lcmp() {
1558 transition(ltos, itos);
1559
1560 #ifdef _LP64
1561 __ pop_l(O1); // pop off value 1, value 2 is in O0
1562 __ lcmp( O1, Otos_l, Otos_i );
1563 #else
1564 __ pop_l(O2); // cmp O2,3 to O0,1
1565 __ lcmp( O2, O3, Otos_l1, Otos_l2, Otos_i );
1566 #endif
1567 }
1568
1569
1570 void TemplateTable::float_cmp(bool is_float, int unordered_result) {
1571
1572 if (is_float) __ pop_f(F2);
1573 else __ pop_d(F2);
1574
1575 assert(Ftos_f == F0 && Ftos_d == F0, "alias checking:");
1576
1577 __ float_cmp( is_float, unordered_result, F2, F0, Otos_i );
1578 }
1579
1580 void TemplateTable::branch(bool is_jsr, bool is_wide) {
1581 // Note: on SPARC, we use InterpreterMacroAssembler::if_cmp also.
1582 __ verify_oop(Lmethod);
1583 __ verify_thread();
1584
1585 const Register O2_bumped_count = O2;
1586 __ profile_taken_branch(G3_scratch, O2_bumped_count);
1587
1588 // get (wide) offset to O1_disp
1589 const Register O1_disp = O1;
1590 if (is_wide) __ get_4_byte_integer_at_bcp( 1, G4_scratch, O1_disp, InterpreterMacroAssembler::set_CC);
1591 else __ get_2_byte_integer_at_bcp( 1, G4_scratch, O1_disp, InterpreterMacroAssembler::Signed, InterpreterMacroAssembler::set_CC);
1592
1593 // Handle all the JSR stuff here, then exit.
1594 // It's much shorter and cleaner than intermingling with the
1595 // non-JSR normal-branch stuff occurring below.
1596 if( is_jsr ) {
1597 // compute return address as bci in Otos_i
1598 __ ld_ptr(Lmethod, methodOopDesc::const_offset(), G3_scratch);
1599 __ sub(Lbcp, G3_scratch, G3_scratch);
1600 __ sub(G3_scratch, in_bytes(constMethodOopDesc::codes_offset()) - (is_wide ? 5 : 3), Otos_i);
1601
1602 // Bump Lbcp to target of JSR
1603 __ add(Lbcp, O1_disp, Lbcp);
1604 // Push returnAddress for "ret" on stack
1605 __ push_ptr(Otos_i);
1606 // And away we go!
1607 __ dispatch_next(vtos);
1608 return;
1609 }
1610
1611 // Normal (non-jsr) branch handling
1612
1613 // Save the current Lbcp
1614 const Register O0_cur_bcp = O0;
1615 __ mov( Lbcp, O0_cur_bcp );
1616
1617
1618 bool increment_invocation_counter_for_backward_branches = UseCompiler && UseLoopCounter;
1619 if ( increment_invocation_counter_for_backward_branches ) {
1620 Label Lforward;
1621 // check branch direction
1622 __ br( Assembler::positive, false, Assembler::pn, Lforward );
1623 // Bump bytecode pointer by displacement (take the branch)
1624 __ delayed()->add( O1_disp, Lbcp, Lbcp ); // add to bc addr
1625
1626 if (TieredCompilation) {
1627 Label Lno_mdo, Loverflow;
1628 int increment = InvocationCounter::count_increment;
1629 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift;
1630 if (ProfileInterpreter) {
1631 // If no method data exists, go to profile_continue.
1632 __ ld_ptr(Lmethod, methodOopDesc::method_data_offset(), G4_scratch);
1633 __ br_null(G4_scratch, false, Assembler::pn, Lno_mdo);
1634 __ delayed()->nop();
1635
1636 // Increment backedge counter in the MDO
1637 Address mdo_backedge_counter(G4_scratch, in_bytes(methodDataOopDesc::backedge_counter_offset()) +
1638 in_bytes(InvocationCounter::counter_offset()));
1639 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, G3_scratch, Lscratch,
1640 Assembler::notZero, &Lforward);
1641 __ ba(false, Loverflow);
1642 __ delayed()->nop();
1643 }
1644
1645 // If there's no MDO, increment counter in methodOop
1646 __ bind(Lno_mdo);
1647 Address backedge_counter(Lmethod, in_bytes(methodOopDesc::backedge_counter_offset()) +
1648 in_bytes(InvocationCounter::counter_offset()));
1649 __ increment_mask_and_jump(backedge_counter, increment, mask, G3_scratch, Lscratch,
1650 Assembler::notZero, &Lforward);
1651 __ bind(Loverflow);
1652
1653 // notify point for loop, pass branch bytecode
1654 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), O0_cur_bcp);
1655
1656 // Was an OSR adapter generated?
1657 // O0 = osr nmethod
1658 __ br_null(O0, false, Assembler::pn, Lforward);
1659 __ delayed()->nop();
1660
1661 // Has the nmethod been invalidated already?
1662 __ ld(O0, nmethod::entry_bci_offset(), O2);
1663 __ cmp(O2, InvalidOSREntryBci);
1664 __ br(Assembler::equal, false, Assembler::pn, Lforward);
1665 __ delayed()->nop();
1666
1667 // migrate the interpreter frame off of the stack
1668
1669 __ mov(G2_thread, L7);
1670 // save nmethod
1671 __ mov(O0, L6);
1672 __ set_last_Java_frame(SP, noreg);
1673 __ call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7);
1674 __ reset_last_Java_frame();
1675 __ mov(L7, G2_thread);
1676
1677 // move OSR nmethod to I1
1678 __ mov(L6, I1);
1679
1680 // OSR buffer to I0
1681 __ mov(O0, I0);
1682
1683 // remove the interpreter frame
1684 __ restore(I5_savedSP, 0, SP);
1685
1686 // Jump to the osr code.
1687 __ ld_ptr(O1, nmethod::osr_entry_point_offset(), O2);
1688 __ jmp(O2, G0);
1689 __ delayed()->nop();
1690
1691 } else {
1692 // Update Backedge branch separately from invocations
1693 const Register G4_invoke_ctr = G4;
1694 __ increment_backedge_counter(G4_invoke_ctr, G1_scratch);
1695 if (ProfileInterpreter) {
1696 __ test_invocation_counter_for_mdp(G4_invoke_ctr, G3_scratch, Lforward);
1697 if (UseOnStackReplacement) {
1698 __ test_backedge_count_for_osr(O2_bumped_count, O0_cur_bcp, G3_scratch);
1699 }
1700 } else {
1701 if (UseOnStackReplacement) {
1702 __ test_backedge_count_for_osr(G4_invoke_ctr, O0_cur_bcp, G3_scratch);
1703 }
1704 }
1705 }
1706
1707 __ bind(Lforward);
1708 } else
1709 // Bump bytecode pointer by displacement (take the branch)
1710 __ add( O1_disp, Lbcp, Lbcp );// add to bc addr
1711
1712 // continue with bytecode @ target
1713 // %%%%% Like Intel, could speed things up by moving bytecode fetch to code above,
1714 // %%%%% and changing dispatch_next to dispatch_only
1715 __ dispatch_next(vtos);
1716 }
1717
1718
1719 // Note Condition in argument is TemplateTable::Condition
1720 // arg scope is within class scope
1721
1722 void TemplateTable::if_0cmp(Condition cc) {
1723 // no pointers, integer only!
1724 transition(itos, vtos);
1725 // assume branch is more often taken than not (loops use backward branches)
1726 __ cmp( Otos_i, 0);
1727 __ if_cmp(ccNot(cc), false);
1728 }
1729
1730
1731 void TemplateTable::if_icmp(Condition cc) {
1732 transition(itos, vtos);
1733 __ pop_i(O1);
1734 __ cmp(O1, Otos_i);
1735 __ if_cmp(ccNot(cc), false);
1736 }
1737
1738
1739 void TemplateTable::if_nullcmp(Condition cc) {
1740 transition(atos, vtos);
1741 __ tst(Otos_i);
1742 __ if_cmp(ccNot(cc), true);
1743 }
1744
1745
1746 void TemplateTable::if_acmp(Condition cc) {
1747 transition(atos, vtos);
1748 __ pop_ptr(O1);
1749 __ verify_oop(O1);
1750 __ verify_oop(Otos_i);
1751 __ cmp(O1, Otos_i);
1752 __ if_cmp(ccNot(cc), true);
1753 }
1754
1755
1756
1757 void TemplateTable::ret() {
1758 transition(vtos, vtos);
1759 locals_index(G3_scratch);
1760 __ access_local_returnAddress(G3_scratch, Otos_i);
1761 // Otos_i contains the bci, compute the bcp from that
1762
1763 #ifdef _LP64
1764 #ifdef ASSERT
1765 // jsr result was labeled as an 'itos' not an 'atos' because we cannot GC
1766 // the result. The return address (really a BCI) was stored with an
1767 // 'astore' because JVM specs claim it's a pointer-sized thing. Hence in
1768 // the 64-bit build the 32-bit BCI is actually in the low bits of a 64-bit
1769 // loaded value.
1770 { Label zzz ;
1771 __ set (65536, G3_scratch) ;
1772 __ cmp (Otos_i, G3_scratch) ;
1773 __ bp( Assembler::lessEqualUnsigned, false, Assembler::xcc, Assembler::pn, zzz);
1774 __ delayed()->nop();
1775 __ stop("BCI is in the wrong register half?");
1776 __ bind (zzz) ;
1777 }
1778 #endif
1779 #endif
1780
1781 __ profile_ret(vtos, Otos_i, G4_scratch);
1782
1783 __ ld_ptr(Lmethod, methodOopDesc::const_offset(), G3_scratch);
1784 __ add(G3_scratch, Otos_i, G3_scratch);
1785 __ add(G3_scratch, in_bytes(constMethodOopDesc::codes_offset()), Lbcp);
1786 __ dispatch_next(vtos);
1787 }
1788
1789
1790 void TemplateTable::wide_ret() {
1791 transition(vtos, vtos);
1792 locals_index_wide(G3_scratch);
1793 __ access_local_returnAddress(G3_scratch, Otos_i);
1794 // Otos_i contains the bci, compute the bcp from that
1795
1796 __ profile_ret(vtos, Otos_i, G4_scratch);
1797
1798 __ ld_ptr(Lmethod, methodOopDesc::const_offset(), G3_scratch);
1799 __ add(G3_scratch, Otos_i, G3_scratch);
1800 __ add(G3_scratch, in_bytes(constMethodOopDesc::codes_offset()), Lbcp);
1801 __ dispatch_next(vtos);
1802 }
1803
1804
1805 void TemplateTable::tableswitch() {
1806 transition(itos, vtos);
1807 Label default_case, continue_execution;
1808
1809 // align bcp
1810 __ add(Lbcp, BytesPerInt, O1);
1811 __ and3(O1, -BytesPerInt, O1);
1812 // load lo, hi
1813 __ ld(O1, 1 * BytesPerInt, O2); // Low Byte
1814 __ ld(O1, 2 * BytesPerInt, O3); // High Byte
1815 #ifdef _LP64
1816 // Sign extend the 32 bits
1817 __ sra ( Otos_i, 0, Otos_i );
1818 #endif /* _LP64 */
1819
1820 // check against lo & hi
1821 __ cmp( Otos_i, O2);
1822 __ br( Assembler::less, false, Assembler::pn, default_case);
1823 __ delayed()->cmp( Otos_i, O3 );
1824 __ br( Assembler::greater, false, Assembler::pn, default_case);
1825 // lookup dispatch offset
1826 __ delayed()->sub(Otos_i, O2, O2);
1827 __ profile_switch_case(O2, O3, G3_scratch, G4_scratch);
1828 __ sll(O2, LogBytesPerInt, O2);
1829 __ add(O2, 3 * BytesPerInt, O2);
1830 __ ba(false, continue_execution);
1831 __ delayed()->ld(O1, O2, O2);
1832 // handle default
1833 __ bind(default_case);
1834 __ profile_switch_default(O3);
1835 __ ld(O1, 0, O2); // get default offset
1836 // continue execution
1837 __ bind(continue_execution);
1838 __ add(Lbcp, O2, Lbcp);
1839 __ dispatch_next(vtos);
1840 }
1841
1842
1843 void TemplateTable::lookupswitch() {
1844 transition(itos, itos);
1845 __ stop("lookupswitch bytecode should have been rewritten");
1846 }
1847
1848 void TemplateTable::fast_linearswitch() {
1849 transition(itos, vtos);
1850 Label loop_entry, loop, found, continue_execution;
1851 // align bcp
1852 __ add(Lbcp, BytesPerInt, O1);
1853 __ and3(O1, -BytesPerInt, O1);
1854 // set counter
1855 __ ld(O1, BytesPerInt, O2);
1856 __ sll(O2, LogBytesPerInt + 1, O2); // in word-pairs
1857 __ add(O1, 2 * BytesPerInt, O3); // set first pair addr
1858 __ ba(false, loop_entry);
1859 __ delayed()->add(O3, O2, O2); // counter now points past last pair
1860
1861 // table search
1862 __ bind(loop);
1863 __ cmp(O4, Otos_i);
1864 __ br(Assembler::equal, true, Assembler::pn, found);
1865 __ delayed()->ld(O3, BytesPerInt, O4); // offset -> O4
1866 __ inc(O3, 2 * BytesPerInt);
1867
1868 __ bind(loop_entry);
1869 __ cmp(O2, O3);
1870 __ brx(Assembler::greaterUnsigned, true, Assembler::pt, loop);
1871 __ delayed()->ld(O3, 0, O4);
1872
1873 // default case
1874 __ ld(O1, 0, O4); // get default offset
1875 if (ProfileInterpreter) {
1876 __ profile_switch_default(O3);
1877 __ ba(false, continue_execution);
1878 __ delayed()->nop();
1879 }
1880
1881 // entry found -> get offset
1882 __ bind(found);
1883 if (ProfileInterpreter) {
1884 __ sub(O3, O1, O3);
1885 __ sub(O3, 2*BytesPerInt, O3);
1886 __ srl(O3, LogBytesPerInt + 1, O3); // in word-pairs
1887 __ profile_switch_case(O3, O1, O2, G3_scratch);
1888
1889 __ bind(continue_execution);
1890 }
1891 __ add(Lbcp, O4, Lbcp);
1892 __ dispatch_next(vtos);
1893 }
1894
1895
1896 void TemplateTable::fast_binaryswitch() {
1897 transition(itos, vtos);
1898 // Implementation using the following core algorithm: (copied from Intel)
1899 //
1900 // int binary_search(int key, LookupswitchPair* array, int n) {
1901 // // Binary search according to "Methodik des Programmierens" by
1902 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
1903 // int i = 0;
1904 // int j = n;
1905 // while (i+1 < j) {
1906 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
1907 // // with Q: for all i: 0 <= i < n: key < a[i]
1908 // // where a stands for the array and assuming that the (inexisting)
1909 // // element a[n] is infinitely big.
1910 // int h = (i + j) >> 1;
1911 // // i < h < j
1912 // if (key < array[h].fast_match()) {
1913 // j = h;
1914 // } else {
1915 // i = h;
1916 // }
1917 // }
1918 // // R: a[i] <= key < a[i+1] or Q
1919 // // (i.e., if key is within array, i is the correct index)
1920 // return i;
1921 // }
1922
1923 // register allocation
1924 assert(Otos_i == O0, "alias checking");
1925 const Register Rkey = Otos_i; // already set (tosca)
1926 const Register Rarray = O1;
1927 const Register Ri = O2;
1928 const Register Rj = O3;
1929 const Register Rh = O4;
1930 const Register Rscratch = O5;
1931
1932 const int log_entry_size = 3;
1933 const int entry_size = 1 << log_entry_size;
1934
1935 Label found;
1936 // Find Array start
1937 __ add(Lbcp, 3 * BytesPerInt, Rarray);
1938 __ and3(Rarray, -BytesPerInt, Rarray);
1939 // initialize i & j (in delay slot)
1940 __ clr( Ri );
1941
1942 // and start
1943 Label entry;
1944 __ ba(false, entry);
1945 __ delayed()->ld( Rarray, -BytesPerInt, Rj);
1946 // (Rj is already in the native byte-ordering.)
1947
1948 // binary search loop
1949 { Label loop;
1950 __ bind( loop );
1951 // int h = (i + j) >> 1;
1952 __ sra( Rh, 1, Rh );
1953 // if (key < array[h].fast_match()) {
1954 // j = h;
1955 // } else {
1956 // i = h;
1957 // }
1958 __ sll( Rh, log_entry_size, Rscratch );
1959 __ ld( Rarray, Rscratch, Rscratch );
1960 // (Rscratch is already in the native byte-ordering.)
1961 __ cmp( Rkey, Rscratch );
1962 if ( VM_Version::v9_instructions_work() ) {
1963 __ movcc( Assembler::less, false, Assembler::icc, Rh, Rj ); // j = h if (key < array[h].fast_match())
1964 __ movcc( Assembler::greaterEqual, false, Assembler::icc, Rh, Ri ); // i = h if (key >= array[h].fast_match())
1965 }
1966 else {
1967 Label end_of_if;
1968 __ br( Assembler::less, true, Assembler::pt, end_of_if );
1969 __ delayed()->mov( Rh, Rj ); // if (<) Rj = Rh
1970 __ mov( Rh, Ri ); // else i = h
1971 __ bind(end_of_if); // }
1972 }
1973
1974 // while (i+1 < j)
1975 __ bind( entry );
1976 __ add( Ri, 1, Rscratch );
1977 __ cmp(Rscratch, Rj);
1978 __ br( Assembler::less, true, Assembler::pt, loop );
1979 __ delayed()->add( Ri, Rj, Rh ); // start h = i + j >> 1;
1980 }
1981
1982 // end of binary search, result index is i (must check again!)
1983 Label default_case;
1984 Label continue_execution;
1985 if (ProfileInterpreter) {
1986 __ mov( Ri, Rh ); // Save index in i for profiling
1987 }
1988 __ sll( Ri, log_entry_size, Ri );
1989 __ ld( Rarray, Ri, Rscratch );
1990 // (Rscratch is already in the native byte-ordering.)
1991 __ cmp( Rkey, Rscratch );
1992 __ br( Assembler::notEqual, true, Assembler::pn, default_case );
1993 __ delayed()->ld( Rarray, -2 * BytesPerInt, Rj ); // load default offset -> j
1994
1995 // entry found -> j = offset
1996 __ inc( Ri, BytesPerInt );
1997 __ profile_switch_case(Rh, Rj, Rscratch, Rkey);
1998 __ ld( Rarray, Ri, Rj );
1999 // (Rj is already in the native byte-ordering.)
2000
2001 if (ProfileInterpreter) {
2002 __ ba(false, continue_execution);
2003 __ delayed()->nop();
2004 }
2005
2006 __ bind(default_case); // fall through (if not profiling)
2007 __ profile_switch_default(Ri);
2008
2009 __ bind(continue_execution);
2010 __ add( Lbcp, Rj, Lbcp );
2011 __ dispatch_next( vtos );
2012 }
2013
2014
2015 void TemplateTable::_return(TosState state) {
2016 transition(state, state);
2017 assert(_desc->calls_vm(), "inconsistent calls_vm information");
2018
2019 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
2020 assert(state == vtos, "only valid state");
2021 __ mov(G0, G3_scratch);
2022 __ access_local_ptr(G3_scratch, Otos_i);
2023 __ load_klass(Otos_i, O2);
2024 __ set(JVM_ACC_HAS_FINALIZER, G3);
2025 __ ld(O2, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc), O2);
2026 __ andcc(G3, O2, G0);
2027 Label skip_register_finalizer;
2028 __ br(Assembler::zero, false, Assembler::pn, skip_register_finalizer);
2029 __ delayed()->nop();
2030
2031 // Call out to do finalizer registration
2032 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), Otos_i);
2033
2034 __ bind(skip_register_finalizer);
2035 }
2036
2037 __ remove_activation(state, /* throw_monitor_exception */ true);
2038
2039 // The caller's SP was adjusted upon method entry to accomodate
2040 // the callee's non-argument locals. Undo that adjustment.
2041 __ ret(); // return to caller
2042 __ delayed()->restore(I5_savedSP, G0, SP);
2043 }
2044
2045
2046 // ----------------------------------------------------------------------------
2047 // Volatile variables demand their effects be made known to all CPU's in
2048 // order. Store buffers on most chips allow reads & writes to reorder; the
2049 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of
2050 // memory barrier (i.e., it's not sufficient that the interpreter does not
2051 // reorder volatile references, the hardware also must not reorder them).
2052 //
2053 // According to the new Java Memory Model (JMM):
2054 // (1) All volatiles are serialized wrt to each other.
2055 // ALSO reads & writes act as aquire & release, so:
2056 // (2) A read cannot let unrelated NON-volatile memory refs that happen after
2057 // the read float up to before the read. It's OK for non-volatile memory refs
2058 // that happen before the volatile read to float down below it.
2059 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs
2060 // that happen BEFORE the write float down to after the write. It's OK for
2061 // non-volatile memory refs that happen after the volatile write to float up
2062 // before it.
2063 //
2064 // We only put in barriers around volatile refs (they are expensive), not
2065 // _between_ memory refs (that would require us to track the flavor of the
2066 // previous memory refs). Requirements (2) and (3) require some barriers
2067 // before volatile stores and after volatile loads. These nearly cover
2068 // requirement (1) but miss the volatile-store-volatile-load case. This final
2069 // case is placed after volatile-stores although it could just as well go
2070 // before volatile-loads.
2071 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint) {
2072 // Helper function to insert a is-volatile test and memory barrier
2073 // All current sparc implementations run in TSO, needing only StoreLoad
2074 if ((order_constraint & Assembler::StoreLoad) == 0) return;
2075 __ membar( order_constraint );
2076 }
2077
2078 // ----------------------------------------------------------------------------
2079 void TemplateTable::resolve_cache_and_index(int byte_no,
2080 Register result,
2081 Register Rcache,
2082 Register index,
2083 size_t index_size) {
2084 // Depends on cpCacheOop layout!
2085 Label resolved;
2086
2087 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
2088 if (byte_no == f1_oop) {
2089 // We are resolved if the f1 field contains a non-null object (CallSite, etc.)
2090 // This kind of CP cache entry does not need to match the flags byte, because
2091 // there is a 1-1 relation between bytecode type and CP entry type.
2092 assert_different_registers(result, Rcache);
2093 __ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() +
2094 ConstantPoolCacheEntry::f1_offset(), result);
2095 __ tst(result);
2096 __ br(Assembler::notEqual, false, Assembler::pt, resolved);
2097 __ delayed()->set((int)bytecode(), O1);
2098 } else {
2099 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
2100 assert(result == noreg, ""); //else change code for setting result
2101 const int shift_count = (1 + byte_no)*BitsPerByte;
2102
2103 __ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() +
2104 ConstantPoolCacheEntry::indices_offset(), Lbyte_code);
2105
2106 __ srl( Lbyte_code, shift_count, Lbyte_code );
2107 __ and3( Lbyte_code, 0xFF, Lbyte_code );
2108 __ cmp( Lbyte_code, (int)bytecode());
2109 __ br( Assembler::equal, false, Assembler::pt, resolved);
2110 __ delayed()->set((int)bytecode(), O1);
2111 }
2112
2113 address entry;
2114 switch (bytecode()) {
2115 case Bytecodes::_getstatic : // fall through
2116 case Bytecodes::_putstatic : // fall through
2117 case Bytecodes::_getfield : // fall through
2118 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break;
2119 case Bytecodes::_invokevirtual : // fall through
2120 case Bytecodes::_invokespecial : // fall through
2121 case Bytecodes::_invokestatic : // fall through
2122 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
2123 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
2124 case Bytecodes::_fast_aldc : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break;
2125 case Bytecodes::_fast_aldc_w : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break;
2126 default : ShouldNotReachHere(); break;
2127 }
2128 // first time invocation - must resolve first
2129 __ call_VM(noreg, entry, O1);
2130 // Update registers with resolved info
2131 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
2132 if (result != noreg)
2133 __ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() +
2134 ConstantPoolCacheEntry::f1_offset(), result);
2135 __ bind(resolved);
2136 }
2137
2138 void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
2139 Register Rmethod,
2140 Register Ritable_index,
2141 Register Rflags,
2142 bool is_invokevirtual,
2143 bool is_invokevfinal,
2144 bool is_invokedynamic) {
2145 // Uses both G3_scratch and G4_scratch
2146 Register Rcache = G3_scratch;
2147 Register Rscratch = G4_scratch;
2148 assert_different_registers(Rcache, Rmethod, Ritable_index);
2149
2150 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2151
2152 // determine constant pool cache field offsets
2153 const int method_offset = in_bytes(
2154 cp_base_offset +
2155 (is_invokevirtual
2156 ? ConstantPoolCacheEntry::f2_offset()
2157 : ConstantPoolCacheEntry::f1_offset()
2158 )
2159 );
2160 const int flags_offset = in_bytes(cp_base_offset +
2161 ConstantPoolCacheEntry::flags_offset());
2162 // access constant pool cache fields
2163 const int index_offset = in_bytes(cp_base_offset +
2164 ConstantPoolCacheEntry::f2_offset());
2165
2166 if (is_invokevfinal) {
2167 __ get_cache_and_index_at_bcp(Rcache, Rscratch, 1);
2168 __ ld_ptr(Rcache, method_offset, Rmethod);
2169 } else if (byte_no == f1_oop) {
2170 // Resolved f1_oop goes directly into 'method' register.
2171 resolve_cache_and_index(byte_no, Rmethod, Rcache, Rscratch, sizeof(u4));
2172 } else {
2173 resolve_cache_and_index(byte_no, noreg, Rcache, Rscratch, sizeof(u2));
2174 __ ld_ptr(Rcache, method_offset, Rmethod);
2175 }
2176
2177 if (Ritable_index != noreg) {
2178 __ ld_ptr(Rcache, index_offset, Ritable_index);
2179 }
2180 __ ld_ptr(Rcache, flags_offset, Rflags);
2181 }
2182
2183 // The Rcache register must be set before call
2184 void TemplateTable::load_field_cp_cache_entry(Register Robj,
2185 Register Rcache,
2186 Register index,
2187 Register Roffset,
2188 Register Rflags,
2189 bool is_static) {
2190 assert_different_registers(Rcache, Rflags, Roffset);
2191
2192 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2193
2194 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2195 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2196 if (is_static) {
2197 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f1_offset(), Robj);
2198 }
2199 }
2200
2201 // The registers Rcache and index expected to be set before call.
2202 // Correct values of the Rcache and index registers are preserved.
2203 void TemplateTable::jvmti_post_field_access(Register Rcache,
2204 Register index,
2205 bool is_static,
2206 bool has_tos) {
2207 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2208
2209 if (JvmtiExport::can_post_field_access()) {
2210 // Check to see if a field access watch has been set before we take
2211 // the time to call into the VM.
2212 Label Label1;
2213 assert_different_registers(Rcache, index, G1_scratch);
2214 AddressLiteral get_field_access_count_addr(JvmtiExport::get_field_access_count_addr());
2215 __ load_contents(get_field_access_count_addr, G1_scratch);
2216 __ tst(G1_scratch);
2217 __ br(Assembler::zero, false, Assembler::pt, Label1);
2218 __ delayed()->nop();
2219
2220 __ add(Rcache, in_bytes(cp_base_offset), Rcache);
2221
2222 if (is_static) {
2223 __ clr(Otos_i);
2224 } else {
2225 if (has_tos) {
2226 // save object pointer before call_VM() clobbers it
2227 __ push_ptr(Otos_i); // put object on tos where GC wants it.
2228 } else {
2229 // Load top of stack (do not pop the value off the stack);
2230 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
2231 }
2232 __ verify_oop(Otos_i);
2233 }
2234 // Otos_i: object pointer or NULL if static
2235 // Rcache: cache entry pointer
2236 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
2237 Otos_i, Rcache);
2238 if (!is_static && has_tos) {
2239 __ pop_ptr(Otos_i); // restore object pointer
2240 __ verify_oop(Otos_i);
2241 }
2242 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2243 __ bind(Label1);
2244 }
2245 }
2246
2247 void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
2248 transition(vtos, vtos);
2249
2250 Register Rcache = G3_scratch;
2251 Register index = G4_scratch;
2252 Register Rclass = Rcache;
2253 Register Roffset= G4_scratch;
2254 Register Rflags = G1_scratch;
2255 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2256
2257 resolve_cache_and_index(byte_no, noreg, Rcache, index, sizeof(u2));
2258 jvmti_post_field_access(Rcache, index, is_static, false);
2259 load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
2260
2261 if (!is_static) {
2262 pop_and_check_object(Rclass);
2263 } else {
2264 __ verify_oop(Rclass);
2265 }
2266
2267 Label exit;
2268
2269 Assembler::Membar_mask_bits membar_bits =
2270 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2271
2272 if (__ membar_has_effect(membar_bits)) {
2273 // Get volatile flag
2274 __ set((1 << ConstantPoolCacheEntry::volatileField), Lscratch);
2275 __ and3(Rflags, Lscratch, Lscratch);
2276 }
2277
2278 Label checkVolatile;
2279
2280 // compute field type
2281 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj;
2282 __ srl(Rflags, ConstantPoolCacheEntry::tosBits, Rflags);
2283 // Make sure we don't need to mask Rflags for tosBits after the above shift
2284 ConstantPoolCacheEntry::verify_tosBits();
2285
2286 // Check atos before itos for getstatic, more likely (in Queens at least)
2287 __ cmp(Rflags, atos);
2288 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2289 __ delayed() ->cmp(Rflags, itos);
2290
2291 // atos
2292 __ load_heap_oop(Rclass, Roffset, Otos_i);
2293 __ verify_oop(Otos_i);
2294 __ push(atos);
2295 if (!is_static) {
2296 patch_bytecode(Bytecodes::_fast_agetfield, G3_scratch, G4_scratch);
2297 }
2298 __ ba(false, checkVolatile);
2299 __ delayed()->tst(Lscratch);
2300
2301 __ bind(notObj);
2302
2303 // cmp(Rflags, itos);
2304 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2305 __ delayed() ->cmp(Rflags, ltos);
2306
2307 // itos
2308 __ ld(Rclass, Roffset, Otos_i);
2309 __ push(itos);
2310 if (!is_static) {
2311 patch_bytecode(Bytecodes::_fast_igetfield, G3_scratch, G4_scratch);
2312 }
2313 __ ba(false, checkVolatile);
2314 __ delayed()->tst(Lscratch);
2315
2316 __ bind(notInt);
2317
2318 // cmp(Rflags, ltos);
2319 __ br(Assembler::notEqual, false, Assembler::pt, notLong);
2320 __ delayed() ->cmp(Rflags, btos);
2321
2322 // ltos
2323 // load must be atomic
2324 __ ld_long(Rclass, Roffset, Otos_l);
2325 __ push(ltos);
2326 if (!is_static) {
2327 patch_bytecode(Bytecodes::_fast_lgetfield, G3_scratch, G4_scratch);
2328 }
2329 __ ba(false, checkVolatile);
2330 __ delayed()->tst(Lscratch);
2331
2332 __ bind(notLong);
2333
2334 // cmp(Rflags, btos);
2335 __ br(Assembler::notEqual, false, Assembler::pt, notByte);
2336 __ delayed() ->cmp(Rflags, ctos);
2337
2338 // btos
2339 __ ldsb(Rclass, Roffset, Otos_i);
2340 __ push(itos);
2341 if (!is_static) {
2342 patch_bytecode(Bytecodes::_fast_bgetfield, G3_scratch, G4_scratch);
2343 }
2344 __ ba(false, checkVolatile);
2345 __ delayed()->tst(Lscratch);
2346
2347 __ bind(notByte);
2348
2349 // cmp(Rflags, ctos);
2350 __ br(Assembler::notEqual, false, Assembler::pt, notChar);
2351 __ delayed() ->cmp(Rflags, stos);
2352
2353 // ctos
2354 __ lduh(Rclass, Roffset, Otos_i);
2355 __ push(itos);
2356 if (!is_static) {
2357 patch_bytecode(Bytecodes::_fast_cgetfield, G3_scratch, G4_scratch);
2358 }
2359 __ ba(false, checkVolatile);
2360 __ delayed()->tst(Lscratch);
2361
2362 __ bind(notChar);
2363
2364 // cmp(Rflags, stos);
2365 __ br(Assembler::notEqual, false, Assembler::pt, notShort);
2366 __ delayed() ->cmp(Rflags, ftos);
2367
2368 // stos
2369 __ ldsh(Rclass, Roffset, Otos_i);
2370 __ push(itos);
2371 if (!is_static) {
2372 patch_bytecode(Bytecodes::_fast_sgetfield, G3_scratch, G4_scratch);
2373 }
2374 __ ba(false, checkVolatile);
2375 __ delayed()->tst(Lscratch);
2376
2377 __ bind(notShort);
2378
2379
2380 // cmp(Rflags, ftos);
2381 __ br(Assembler::notEqual, false, Assembler::pt, notFloat);
2382 __ delayed() ->tst(Lscratch);
2383
2384 // ftos
2385 __ ldf(FloatRegisterImpl::S, Rclass, Roffset, Ftos_f);
2386 __ push(ftos);
2387 if (!is_static) {
2388 patch_bytecode(Bytecodes::_fast_fgetfield, G3_scratch, G4_scratch);
2389 }
2390 __ ba(false, checkVolatile);
2391 __ delayed()->tst(Lscratch);
2392
2393 __ bind(notFloat);
2394
2395
2396 // dtos
2397 __ ldf(FloatRegisterImpl::D, Rclass, Roffset, Ftos_d);
2398 __ push(dtos);
2399 if (!is_static) {
2400 patch_bytecode(Bytecodes::_fast_dgetfield, G3_scratch, G4_scratch);
2401 }
2402
2403 __ bind(checkVolatile);
2404 if (__ membar_has_effect(membar_bits)) {
2405 // __ tst(Lscratch); executed in delay slot
2406 __ br(Assembler::zero, false, Assembler::pt, exit);
2407 __ delayed()->nop();
2408 volatile_barrier(membar_bits);
2409 }
2410
2411 __ bind(exit);
2412 }
2413
2414
2415 void TemplateTable::getfield(int byte_no) {
2416 getfield_or_static(byte_no, false);
2417 }
2418
2419 void TemplateTable::getstatic(int byte_no) {
2420 getfield_or_static(byte_no, true);
2421 }
2422
2423
2424 void TemplateTable::fast_accessfield(TosState state) {
2425 transition(atos, state);
2426 Register Rcache = G3_scratch;
2427 Register index = G4_scratch;
2428 Register Roffset = G4_scratch;
2429 Register Rflags = Rcache;
2430 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2431
2432 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2433 jvmti_post_field_access(Rcache, index, /*is_static*/false, /*has_tos*/true);
2434
2435 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2436
2437 __ null_check(Otos_i);
2438 __ verify_oop(Otos_i);
2439
2440 Label exit;
2441
2442 Assembler::Membar_mask_bits membar_bits =
2443 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2444 if (__ membar_has_effect(membar_bits)) {
2445 // Get volatile flag
2446 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Rflags);
2447 __ set((1 << ConstantPoolCacheEntry::volatileField), Lscratch);
2448 }
2449
2450 switch (bytecode()) {
2451 case Bytecodes::_fast_bgetfield:
2452 __ ldsb(Otos_i, Roffset, Otos_i);
2453 break;
2454 case Bytecodes::_fast_cgetfield:
2455 __ lduh(Otos_i, Roffset, Otos_i);
2456 break;
2457 case Bytecodes::_fast_sgetfield:
2458 __ ldsh(Otos_i, Roffset, Otos_i);
2459 break;
2460 case Bytecodes::_fast_igetfield:
2461 __ ld(Otos_i, Roffset, Otos_i);
2462 break;
2463 case Bytecodes::_fast_lgetfield:
2464 __ ld_long(Otos_i, Roffset, Otos_l);
2465 break;
2466 case Bytecodes::_fast_fgetfield:
2467 __ ldf(FloatRegisterImpl::S, Otos_i, Roffset, Ftos_f);
2468 break;
2469 case Bytecodes::_fast_dgetfield:
2470 __ ldf(FloatRegisterImpl::D, Otos_i, Roffset, Ftos_d);
2471 break;
2472 case Bytecodes::_fast_agetfield:
2473 __ load_heap_oop(Otos_i, Roffset, Otos_i);
2474 break;
2475 default:
2476 ShouldNotReachHere();
2477 }
2478
2479 if (__ membar_has_effect(membar_bits)) {
2480 __ btst(Lscratch, Rflags);
2481 __ br(Assembler::zero, false, Assembler::pt, exit);
2482 __ delayed()->nop();
2483 volatile_barrier(membar_bits);
2484 __ bind(exit);
2485 }
2486
2487 if (state == atos) {
2488 __ verify_oop(Otos_i); // does not blow flags!
2489 }
2490 }
2491
2492 void TemplateTable::jvmti_post_fast_field_mod() {
2493 if (JvmtiExport::can_post_field_modification()) {
2494 // Check to see if a field modification watch has been set before we take
2495 // the time to call into the VM.
2496 Label done;
2497 AddressLiteral get_field_modification_count_addr(JvmtiExport::get_field_modification_count_addr());
2498 __ load_contents(get_field_modification_count_addr, G4_scratch);
2499 __ tst(G4_scratch);
2500 __ br(Assembler::zero, false, Assembler::pt, done);
2501 __ delayed()->nop();
2502 __ pop_ptr(G4_scratch); // copy the object pointer from tos
2503 __ verify_oop(G4_scratch);
2504 __ push_ptr(G4_scratch); // put the object pointer back on tos
2505 __ get_cache_entry_pointer_at_bcp(G1_scratch, G3_scratch, 1);
2506 // Save tos values before call_VM() clobbers them. Since we have
2507 // to do it for every data type, we use the saved values as the
2508 // jvalue object.
2509 switch (bytecode()) { // save tos values before call_VM() clobbers them
2510 case Bytecodes::_fast_aputfield: __ push_ptr(Otos_i); break;
2511 case Bytecodes::_fast_bputfield: // fall through
2512 case Bytecodes::_fast_sputfield: // fall through
2513 case Bytecodes::_fast_cputfield: // fall through
2514 case Bytecodes::_fast_iputfield: __ push_i(Otos_i); break;
2515 case Bytecodes::_fast_dputfield: __ push_d(Ftos_d); break;
2516 case Bytecodes::_fast_fputfield: __ push_f(Ftos_f); break;
2517 // get words in right order for use as jvalue object
2518 case Bytecodes::_fast_lputfield: __ push_l(Otos_l); break;
2519 }
2520 // setup pointer to jvalue object
2521 __ mov(Lesp, G3_scratch); __ inc(G3_scratch, wordSize);
2522 // G4_scratch: object pointer
2523 // G1_scratch: cache entry pointer
2524 // G3_scratch: jvalue object on the stack
2525 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), G4_scratch, G1_scratch, G3_scratch);
2526 switch (bytecode()) { // restore tos values
2527 case Bytecodes::_fast_aputfield: __ pop_ptr(Otos_i); break;
2528 case Bytecodes::_fast_bputfield: // fall through
2529 case Bytecodes::_fast_sputfield: // fall through
2530 case Bytecodes::_fast_cputfield: // fall through
2531 case Bytecodes::_fast_iputfield: __ pop_i(Otos_i); break;
2532 case Bytecodes::_fast_dputfield: __ pop_d(Ftos_d); break;
2533 case Bytecodes::_fast_fputfield: __ pop_f(Ftos_f); break;
2534 case Bytecodes::_fast_lputfield: __ pop_l(Otos_l); break;
2535 }
2536 __ bind(done);
2537 }
2538 }
2539
2540 // The registers Rcache and index expected to be set before call.
2541 // The function may destroy various registers, just not the Rcache and index registers.
2542 void TemplateTable::jvmti_post_field_mod(Register Rcache, Register index, bool is_static) {
2543 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2544
2545 if (JvmtiExport::can_post_field_modification()) {
2546 // Check to see if a field modification watch has been set before we take
2547 // the time to call into the VM.
2548 Label Label1;
2549 assert_different_registers(Rcache, index, G1_scratch);
2550 AddressLiteral get_field_modification_count_addr(JvmtiExport::get_field_modification_count_addr());
2551 __ load_contents(get_field_modification_count_addr, G1_scratch);
2552 __ tst(G1_scratch);
2553 __ br(Assembler::zero, false, Assembler::pt, Label1);
2554 __ delayed()->nop();
2555
2556 // The Rcache and index registers have been already set.
2557 // This allows to eliminate this call but the Rcache and index
2558 // registers must be correspondingly used after this line.
2559 __ get_cache_and_index_at_bcp(G1_scratch, G4_scratch, 1);
2560
2561 __ add(G1_scratch, in_bytes(cp_base_offset), G3_scratch);
2562 if (is_static) {
2563 // Life is simple. Null out the object pointer.
2564 __ clr(G4_scratch);
2565 } else {
2566 Register Rflags = G1_scratch;
2567 // Life is harder. The stack holds the value on top, followed by the
2568 // object. We don't know the size of the value, though; it could be
2569 // one or two words depending on its type. As a result, we must find
2570 // the type to determine where the object is.
2571
2572 Label two_word, valsizeknown;
2573 __ ld_ptr(G1_scratch, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2574 __ mov(Lesp, G4_scratch);
2575 __ srl(Rflags, ConstantPoolCacheEntry::tosBits, Rflags);
2576 // Make sure we don't need to mask Rflags for tosBits after the above shift
2577 ConstantPoolCacheEntry::verify_tosBits();
2578 __ cmp(Rflags, ltos);
2579 __ br(Assembler::equal, false, Assembler::pt, two_word);
2580 __ delayed()->cmp(Rflags, dtos);
2581 __ br(Assembler::equal, false, Assembler::pt, two_word);
2582 __ delayed()->nop();
2583 __ inc(G4_scratch, Interpreter::expr_offset_in_bytes(1));
2584 __ br(Assembler::always, false, Assembler::pt, valsizeknown);
2585 __ delayed()->nop();
2586 __ bind(two_word);
2587
2588 __ inc(G4_scratch, Interpreter::expr_offset_in_bytes(2));
2589
2590 __ bind(valsizeknown);
2591 // setup object pointer
2592 __ ld_ptr(G4_scratch, 0, G4_scratch);
2593 __ verify_oop(G4_scratch);
2594 }
2595 // setup pointer to jvalue object
2596 __ mov(Lesp, G1_scratch); __ inc(G1_scratch, wordSize);
2597 // G4_scratch: object pointer or NULL if static
2598 // G3_scratch: cache entry pointer
2599 // G1_scratch: jvalue object on the stack
2600 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification),
2601 G4_scratch, G3_scratch, G1_scratch);
2602 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2603 __ bind(Label1);
2604 }
2605 }
2606
2607 void TemplateTable::pop_and_check_object(Register r) {
2608 __ pop_ptr(r);
2609 __ null_check(r); // for field access must check obj.
2610 __ verify_oop(r);
2611 }
2612
2613 void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
2614 transition(vtos, vtos);
2615 Register Rcache = G3_scratch;
2616 Register index = G4_scratch;
2617 Register Rclass = Rcache;
2618 Register Roffset= G4_scratch;
2619 Register Rflags = G1_scratch;
2620 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2621
2622 resolve_cache_and_index(byte_no, noreg, Rcache, index, sizeof(u2));
2623 jvmti_post_field_mod(Rcache, index, is_static);
2624 load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
2625
2626 Assembler::Membar_mask_bits read_bits =
2627 Assembler::Membar_mask_bits(Assembler::LoadStore | Assembler::StoreStore);
2628 Assembler::Membar_mask_bits write_bits = Assembler::StoreLoad;
2629
2630 Label notVolatile, checkVolatile, exit;
2631 if (__ membar_has_effect(read_bits) || __ membar_has_effect(write_bits)) {
2632 __ set((1 << ConstantPoolCacheEntry::volatileField), Lscratch);
2633 __ and3(Rflags, Lscratch, Lscratch);
2634
2635 if (__ membar_has_effect(read_bits)) {
2636 __ tst(Lscratch);
2637 __ br(Assembler::zero, false, Assembler::pt, notVolatile);
2638 __ delayed()->nop();
2639 volatile_barrier(read_bits);
2640 __ bind(notVolatile);
2641 }
2642 }
2643
2644 __ srl(Rflags, ConstantPoolCacheEntry::tosBits, Rflags);
2645 // Make sure we don't need to mask Rflags for tosBits after the above shift
2646 ConstantPoolCacheEntry::verify_tosBits();
2647
2648 // compute field type
2649 Label notInt, notShort, notChar, notObj, notByte, notLong, notFloat;
2650
2651 if (is_static) {
2652 // putstatic with object type most likely, check that first
2653 __ cmp(Rflags, atos );
2654 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2655 __ delayed() ->cmp(Rflags, itos );
2656
2657 // atos
2658 __ pop_ptr();
2659 __ verify_oop(Otos_i);
2660
2661 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2662
2663 __ ba(false, checkVolatile);
2664 __ delayed()->tst(Lscratch);
2665
2666 __ bind(notObj);
2667
2668 // cmp(Rflags, itos );
2669 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2670 __ delayed() ->cmp(Rflags, btos );
2671
2672 // itos
2673 __ pop_i();
2674 __ st(Otos_i, Rclass, Roffset);
2675 __ ba(false, checkVolatile);
2676 __ delayed()->tst(Lscratch);
2677
2678 __ bind(notInt);
2679
2680 } else {
2681 // putfield with int type most likely, check that first
2682 __ cmp(Rflags, itos );
2683 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2684 __ delayed() ->cmp(Rflags, atos );
2685
2686 // itos
2687 __ pop_i();
2688 pop_and_check_object(Rclass);
2689 __ st(Otos_i, Rclass, Roffset);
2690 patch_bytecode(Bytecodes::_fast_iputfield, G3_scratch, G4_scratch);
2691 __ ba(false, checkVolatile);
2692 __ delayed()->tst(Lscratch);
2693
2694 __ bind(notInt);
2695 // cmp(Rflags, atos );
2696 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2697 __ delayed() ->cmp(Rflags, btos );
2698
2699 // atos
2700 __ pop_ptr();
2701 pop_and_check_object(Rclass);
2702 __ verify_oop(Otos_i);
2703
2704 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2705
2706 patch_bytecode(Bytecodes::_fast_aputfield, G3_scratch, G4_scratch);
2707 __ ba(false, checkVolatile);
2708 __ delayed()->tst(Lscratch);
2709
2710 __ bind(notObj);
2711 }
2712
2713 // cmp(Rflags, btos );
2714 __ br(Assembler::notEqual, false, Assembler::pt, notByte);
2715 __ delayed() ->cmp(Rflags, ltos );
2716
2717 // btos
2718 __ pop_i();
2719 if (!is_static) pop_and_check_object(Rclass);
2720 __ stb(Otos_i, Rclass, Roffset);
2721 if (!is_static) {
2722 patch_bytecode(Bytecodes::_fast_bputfield, G3_scratch, G4_scratch);
2723 }
2724 __ ba(false, checkVolatile);
2725 __ delayed()->tst(Lscratch);
2726
2727 __ bind(notByte);
2728
2729 // cmp(Rflags, ltos );
2730 __ br(Assembler::notEqual, false, Assembler::pt, notLong);
2731 __ delayed() ->cmp(Rflags, ctos );
2732
2733 // ltos
2734 __ pop_l();
2735 if (!is_static) pop_and_check_object(Rclass);
2736 __ st_long(Otos_l, Rclass, Roffset);
2737 if (!is_static) {
2738 patch_bytecode(Bytecodes::_fast_lputfield, G3_scratch, G4_scratch);
2739 }
2740 __ ba(false, checkVolatile);
2741 __ delayed()->tst(Lscratch);
2742
2743 __ bind(notLong);
2744
2745 // cmp(Rflags, ctos );
2746 __ br(Assembler::notEqual, false, Assembler::pt, notChar);
2747 __ delayed() ->cmp(Rflags, stos );
2748
2749 // ctos (char)
2750 __ pop_i();
2751 if (!is_static) pop_and_check_object(Rclass);
2752 __ sth(Otos_i, Rclass, Roffset);
2753 if (!is_static) {
2754 patch_bytecode(Bytecodes::_fast_cputfield, G3_scratch, G4_scratch);
2755 }
2756 __ ba(false, checkVolatile);
2757 __ delayed()->tst(Lscratch);
2758
2759 __ bind(notChar);
2760 // cmp(Rflags, stos );
2761 __ br(Assembler::notEqual, false, Assembler::pt, notShort);
2762 __ delayed() ->cmp(Rflags, ftos );
2763
2764 // stos (char)
2765 __ pop_i();
2766 if (!is_static) pop_and_check_object(Rclass);
2767 __ sth(Otos_i, Rclass, Roffset);
2768 if (!is_static) {
2769 patch_bytecode(Bytecodes::_fast_sputfield, G3_scratch, G4_scratch);
2770 }
2771 __ ba(false, checkVolatile);
2772 __ delayed()->tst(Lscratch);
2773
2774 __ bind(notShort);
2775 // cmp(Rflags, ftos );
2776 __ br(Assembler::notZero, false, Assembler::pt, notFloat);
2777 __ delayed()->nop();
2778
2779 // ftos
2780 __ pop_f();
2781 if (!is_static) pop_and_check_object(Rclass);
2782 __ stf(FloatRegisterImpl::S, Ftos_f, Rclass, Roffset);
2783 if (!is_static) {
2784 patch_bytecode(Bytecodes::_fast_fputfield, G3_scratch, G4_scratch);
2785 }
2786 __ ba(false, checkVolatile);
2787 __ delayed()->tst(Lscratch);
2788
2789 __ bind(notFloat);
2790
2791 // dtos
2792 __ pop_d();
2793 if (!is_static) pop_and_check_object(Rclass);
2794 __ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
2795 if (!is_static) {
2796 patch_bytecode(Bytecodes::_fast_dputfield, G3_scratch, G4_scratch);
2797 }
2798
2799 __ bind(checkVolatile);
2800 __ tst(Lscratch);
2801
2802 if (__ membar_has_effect(write_bits)) {
2803 // __ tst(Lscratch); in delay slot
2804 __ br(Assembler::zero, false, Assembler::pt, exit);
2805 __ delayed()->nop();
2806 volatile_barrier(Assembler::StoreLoad);
2807 __ bind(exit);
2808 }
2809 }
2810
2811 void TemplateTable::fast_storefield(TosState state) {
2812 transition(state, vtos);
2813 Register Rcache = G3_scratch;
2814 Register Rclass = Rcache;
2815 Register Roffset= G4_scratch;
2816 Register Rflags = G1_scratch;
2817 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
2818
2819 jvmti_post_fast_field_mod();
2820
2821 __ get_cache_and_index_at_bcp(Rcache, G4_scratch, 1);
2822
2823 Assembler::Membar_mask_bits read_bits =
2824 Assembler::Membar_mask_bits(Assembler::LoadStore | Assembler::StoreStore);
2825 Assembler::Membar_mask_bits write_bits = Assembler::StoreLoad;
2826
2827 Label notVolatile, checkVolatile, exit;
2828 if (__ membar_has_effect(read_bits) || __ membar_has_effect(write_bits)) {
2829 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2830 __ set((1 << ConstantPoolCacheEntry::volatileField), Lscratch);
2831 __ and3(Rflags, Lscratch, Lscratch);
2832 if (__ membar_has_effect(read_bits)) {
2833 __ tst(Lscratch);
2834 __ br(Assembler::zero, false, Assembler::pt, notVolatile);
2835 __ delayed()->nop();
2836 volatile_barrier(read_bits);
2837 __ bind(notVolatile);
2838 }
2839 }
2840
2841 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2842 pop_and_check_object(Rclass);
2843
2844 switch (bytecode()) {
2845 case Bytecodes::_fast_bputfield: __ stb(Otos_i, Rclass, Roffset); break;
2846 case Bytecodes::_fast_cputfield: /* fall through */
2847 case Bytecodes::_fast_sputfield: __ sth(Otos_i, Rclass, Roffset); break;
2848 case Bytecodes::_fast_iputfield: __ st(Otos_i, Rclass, Roffset); break;
2849 case Bytecodes::_fast_lputfield: __ st_long(Otos_l, Rclass, Roffset); break;
2850 case Bytecodes::_fast_fputfield:
2851 __ stf(FloatRegisterImpl::S, Ftos_f, Rclass, Roffset);
2852 break;
2853 case Bytecodes::_fast_dputfield:
2854 __ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
2855 break;
2856 case Bytecodes::_fast_aputfield:
2857 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2858 break;
2859 default:
2860 ShouldNotReachHere();
2861 }
2862
2863 if (__ membar_has_effect(write_bits)) {
2864 __ tst(Lscratch);
2865 __ br(Assembler::zero, false, Assembler::pt, exit);
2866 __ delayed()->nop();
2867 volatile_barrier(Assembler::StoreLoad);
2868 __ bind(exit);
2869 }
2870 }
2871
2872
2873 void TemplateTable::putfield(int byte_no) {
2874 putfield_or_static(byte_no, false);
2875 }
2876
2877 void TemplateTable::putstatic(int byte_no) {
2878 putfield_or_static(byte_no, true);
2879 }
2880
2881
2882 void TemplateTable::fast_xaccess(TosState state) {
2883 transition(vtos, state);
2884 Register Rcache = G3_scratch;
2885 Register Roffset = G4_scratch;
2886 Register Rflags = G4_scratch;
2887 Register Rreceiver = Lscratch;
2888
2889 __ ld_ptr(Llocals, 0, Rreceiver);
2890
2891 // access constant pool cache (is resolved)
2892 __ get_cache_and_index_at_bcp(Rcache, G4_scratch, 2);
2893 __ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset(), Roffset);
2894 __ add(Lbcp, 1, Lbcp); // needed to report exception at the correct bcp
2895
2896 __ verify_oop(Rreceiver);
2897 __ null_check(Rreceiver);
2898 if (state == atos) {
2899 __ load_heap_oop(Rreceiver, Roffset, Otos_i);
2900 } else if (state == itos) {
2901 __ ld (Rreceiver, Roffset, Otos_i) ;
2902 } else if (state == ftos) {
2903 __ ldf(FloatRegisterImpl::S, Rreceiver, Roffset, Ftos_f);
2904 } else {
2905 ShouldNotReachHere();
2906 }
2907
2908 Assembler::Membar_mask_bits membar_bits =
2909 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2910 if (__ membar_has_effect(membar_bits)) {
2911
2912 // Get is_volatile value in Rflags and check if membar is needed
2913 __ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::flags_offset(), Rflags);
2914
2915 // Test volatile
2916 Label notVolatile;
2917 __ set((1 << ConstantPoolCacheEntry::volatileField), Lscratch);
2918 __ btst(Rflags, Lscratch);
2919 __ br(Assembler::zero, false, Assembler::pt, notVolatile);
2920 __ delayed()->nop();
2921 volatile_barrier(membar_bits);
2922 __ bind(notVolatile);
2923 }
2924
2925 __ interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
2926 __ sub(Lbcp, 1, Lbcp);
2927 }
2928
2929 //----------------------------------------------------------------------------------------------------
2930 // Calls
2931
2932 void TemplateTable::count_calls(Register method, Register temp) {
2933 // implemented elsewhere
2934 ShouldNotReachHere();
2935 }
2936
2937 void TemplateTable::generate_vtable_call(Register Rrecv, Register Rindex, Register Rret) {
2938 Register Rtemp = G4_scratch;
2939 Register Rcall = Rindex;
2940 assert_different_registers(Rcall, G5_method, Gargs, Rret);
2941
2942 // get target methodOop & entry point
2943 const int base = instanceKlass::vtable_start_offset() * wordSize;
2944 if (vtableEntry::size() % 3 == 0) {
2945 // scale the vtable index by 12:
2946 int one_third = vtableEntry::size() / 3;
2947 __ sll(Rindex, exact_log2(one_third * 1 * wordSize), Rtemp);
2948 __ sll(Rindex, exact_log2(one_third * 2 * wordSize), Rindex);
2949 __ add(Rindex, Rtemp, Rindex);
2950 } else {
2951 // scale the vtable index by 8:
2952 __ sll(Rindex, exact_log2(vtableEntry::size() * wordSize), Rindex);
2953 }
2954
2955 __ add(Rrecv, Rindex, Rrecv);
2956 __ ld_ptr(Rrecv, base + vtableEntry::method_offset_in_bytes(), G5_method);
2957
2958 __ call_from_interpreter(Rcall, Gargs, Rret);
2959 }
2960
2961 void TemplateTable::invokevirtual(int byte_no) {
2962 transition(vtos, vtos);
2963 assert(byte_no == f2_byte, "use this argument");
2964
2965 Register Rscratch = G3_scratch;
2966 Register Rtemp = G4_scratch;
2967 Register Rret = Lscratch;
2968 Register Rrecv = G5_method;
2969 Label notFinal;
2970
2971 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, true, false, false);
2972 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
2973
2974 // Check for vfinal
2975 __ set((1 << ConstantPoolCacheEntry::vfinalMethod), G4_scratch);
2976 __ btst(Rret, G4_scratch);
2977 __ br(Assembler::zero, false, Assembler::pt, notFinal);
2978 __ delayed()->and3(Rret, 0xFF, G4_scratch); // gets number of parameters
2979
2980 patch_bytecode(Bytecodes::_fast_invokevfinal, Rscratch, Rtemp);
2981
2982 invokevfinal_helper(Rscratch, Rret);
2983
2984 __ bind(notFinal);
2985
2986 __ mov(G5_method, Rscratch); // better scratch register
2987 __ load_receiver(G4_scratch, O0); // gets receiverOop
2988 // receiver is in O0
2989 __ verify_oop(O0);
2990
2991 // get return address
2992 AddressLiteral table(Interpreter::return_3_addrs_by_index_table());
2993 __ set(table, Rtemp);
2994 __ srl(Rret, ConstantPoolCacheEntry::tosBits, Rret); // get return type
2995 // Make sure we don't need to mask Rret for tosBits after the above shift
2996 ConstantPoolCacheEntry::verify_tosBits();
2997 __ sll(Rret, LogBytesPerWord, Rret);
2998 __ ld_ptr(Rtemp, Rret, Rret); // get return address
2999
3000 // get receiver klass
3001 __ null_check(O0, oopDesc::klass_offset_in_bytes());
3002 __ load_klass(O0, Rrecv);
3003 __ verify_oop(Rrecv);
3004
3005 __ profile_virtual_call(Rrecv, O4);
3006
3007 generate_vtable_call(Rrecv, Rscratch, Rret);
3008 }
3009
3010 void TemplateTable::fast_invokevfinal(int byte_no) {
3011 transition(vtos, vtos);
3012 assert(byte_no == f2_byte, "use this argument");
3013
3014 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Lscratch, true,
3015 /*is_invokevfinal*/true, false);
3016 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3017 invokevfinal_helper(G3_scratch, Lscratch);
3018 }
3019
3020 void TemplateTable::invokevfinal_helper(Register Rscratch, Register Rret) {
3021 Register Rtemp = G4_scratch;
3022
3023 __ verify_oop(G5_method);
3024
3025 // Load receiver from stack slot
3026 __ lduh(G5_method, in_bytes(methodOopDesc::size_of_parameters_offset()), G4_scratch);
3027 __ load_receiver(G4_scratch, O0);
3028
3029 // receiver NULL check
3030 __ null_check(O0);
3031
3032 __ profile_final_call(O4);
3033
3034 // get return address
3035 AddressLiteral table(Interpreter::return_3_addrs_by_index_table());
3036 __ set(table, Rtemp);
3037 __ srl(Rret, ConstantPoolCacheEntry::tosBits, Rret); // get return type
3038 // Make sure we don't need to mask Rret for tosBits after the above shift
3039 ConstantPoolCacheEntry::verify_tosBits();
3040 __ sll(Rret, LogBytesPerWord, Rret);
3041 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3042
3043
3044 // do the call
3045 __ call_from_interpreter(Rscratch, Gargs, Rret);
3046 }
3047
3048 void TemplateTable::invokespecial(int byte_no) {
3049 transition(vtos, vtos);
3050 assert(byte_no == f1_byte, "use this argument");
3051
3052 Register Rscratch = G3_scratch;
3053 Register Rtemp = G4_scratch;
3054 Register Rret = Lscratch;
3055
3056 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, /*virtual*/ false, false, false);
3057 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3058
3059 __ verify_oop(G5_method);
3060
3061 __ lduh(G5_method, in_bytes(methodOopDesc::size_of_parameters_offset()), G4_scratch);
3062 __ load_receiver(G4_scratch, O0);
3063
3064 // receiver NULL check
3065 __ null_check(O0);
3066
3067 __ profile_call(O4);
3068
3069 // get return address
3070 AddressLiteral table(Interpreter::return_3_addrs_by_index_table());
3071 __ set(table, Rtemp);
3072 __ srl(Rret, ConstantPoolCacheEntry::tosBits, Rret); // get return type
3073 // Make sure we don't need to mask Rret for tosBits after the above shift
3074 ConstantPoolCacheEntry::verify_tosBits();
3075 __ sll(Rret, LogBytesPerWord, Rret);
3076 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3077
3078 // do the call
3079 __ call_from_interpreter(Rscratch, Gargs, Rret);
3080 }
3081
3082 void TemplateTable::invokestatic(int byte_no) {
3083 transition(vtos, vtos);
3084 assert(byte_no == f1_byte, "use this argument");
3085
3086 Register Rscratch = G3_scratch;
3087 Register Rtemp = G4_scratch;
3088 Register Rret = Lscratch;
3089
3090 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, /*virtual*/ false, false, false);
3091 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3092
3093 __ verify_oop(G5_method);
3094
3095 __ profile_call(O4);
3096
3097 // get return address
3098 AddressLiteral table(Interpreter::return_3_addrs_by_index_table());
3099 __ set(table, Rtemp);
3100 __ srl(Rret, ConstantPoolCacheEntry::tosBits, Rret); // get return type
3101 // Make sure we don't need to mask Rret for tosBits after the above shift
3102 ConstantPoolCacheEntry::verify_tosBits();
3103 __ sll(Rret, LogBytesPerWord, Rret);
3104 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3105
3106 // do the call
3107 __ call_from_interpreter(Rscratch, Gargs, Rret);
3108 }
3109
3110
3111 void TemplateTable::invokeinterface_object_method(Register RklassOop,
3112 Register Rcall,
3113 Register Rret,
3114 Register Rflags) {
3115 Register Rscratch = G4_scratch;
3116 Register Rindex = Lscratch;
3117
3118 assert_different_registers(Rscratch, Rindex, Rret);
3119
3120 Label notFinal;
3121
3122 // Check for vfinal
3123 __ set((1 << ConstantPoolCacheEntry::vfinalMethod), Rscratch);
3124 __ btst(Rflags, Rscratch);
3125 __ br(Assembler::zero, false, Assembler::pt, notFinal);
3126 __ delayed()->nop();
3127
3128 __ profile_final_call(O4);
3129
3130 // do the call - the index (f2) contains the methodOop
3131 assert_different_registers(G5_method, Gargs, Rcall);
3132 __ mov(Rindex, G5_method);
3133 __ call_from_interpreter(Rcall, Gargs, Rret);
3134 __ bind(notFinal);
3135
3136 __ profile_virtual_call(RklassOop, O4);
3137 generate_vtable_call(RklassOop, Rindex, Rret);
3138 }
3139
3140
3141 void TemplateTable::invokeinterface(int byte_no) {
3142 transition(vtos, vtos);
3143 assert(byte_no == f1_byte, "use this argument");
3144
3145 Register Rscratch = G4_scratch;
3146 Register Rret = G3_scratch;
3147 Register Rindex = Lscratch;
3148 Register Rinterface = G1_scratch;
3149 Register RklassOop = G5_method;
3150 Register Rflags = O1;
3151 assert_different_registers(Rscratch, G5_method);
3152
3153 load_invoke_cp_cache_entry(byte_no, Rinterface, Rindex, Rflags, /*virtual*/ false, false, false);
3154 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3155
3156 // get receiver
3157 __ and3(Rflags, 0xFF, Rscratch); // gets number of parameters
3158 __ load_receiver(Rscratch, O0);
3159 __ verify_oop(O0);
3160
3161 __ mov(Rflags, Rret);
3162
3163 // get return address
3164 AddressLiteral table(Interpreter::return_5_addrs_by_index_table());
3165 __ set(table, Rscratch);
3166 __ srl(Rret, ConstantPoolCacheEntry::tosBits, Rret); // get return type
3167 // Make sure we don't need to mask Rret for tosBits after the above shift
3168 ConstantPoolCacheEntry::verify_tosBits();
3169 __ sll(Rret, LogBytesPerWord, Rret);
3170 __ ld_ptr(Rscratch, Rret, Rret); // get return address
3171
3172 // get receiver klass
3173 __ null_check(O0, oopDesc::klass_offset_in_bytes());
3174 __ load_klass(O0, RklassOop);
3175 __ verify_oop(RklassOop);
3176
3177 // Special case of invokeinterface called for virtual method of
3178 // java.lang.Object. See cpCacheOop.cpp for details.
3179 // This code isn't produced by javac, but could be produced by
3180 // another compliant java compiler.
3181 Label notMethod;
3182 __ set((1 << ConstantPoolCacheEntry::methodInterface), Rscratch);
3183 __ btst(Rflags, Rscratch);
3184 __ br(Assembler::zero, false, Assembler::pt, notMethod);
3185 __ delayed()->nop();
3186
3187 invokeinterface_object_method(RklassOop, Rinterface, Rret, Rflags);
3188
3189 __ bind(notMethod);
3190
3191 __ profile_virtual_call(RklassOop, O4);
3192
3193 //
3194 // find entry point to call
3195 //
3196
3197 // compute start of first itableOffsetEntry (which is at end of vtable)
3198 const int base = instanceKlass::vtable_start_offset() * wordSize;
3199 Label search;
3200 Register Rtemp = Rflags;
3201
3202 __ ld(RklassOop, instanceKlass::vtable_length_offset() * wordSize, Rtemp);
3203 if (align_object_offset(1) > 1) {
3204 __ round_to(Rtemp, align_object_offset(1));
3205 }
3206 __ sll(Rtemp, LogBytesPerWord, Rtemp); // Rscratch *= 4;
3207 if (Assembler::is_simm13(base)) {
3208 __ add(Rtemp, base, Rtemp);
3209 } else {
3210 __ set(base, Rscratch);
3211 __ add(Rscratch, Rtemp, Rtemp);
3212 }
3213 __ add(RklassOop, Rtemp, Rscratch);
3214
3215 __ bind(search);
3216
3217 __ ld_ptr(Rscratch, itableOffsetEntry::interface_offset_in_bytes(), Rtemp);
3218 {
3219 Label ok;
3220
3221 // Check that entry is non-null. Null entries are probably a bytecode
3222 // problem. If the interface isn't implemented by the receiver class,
3223 // the VM should throw IncompatibleClassChangeError. linkResolver checks
3224 // this too but that's only if the entry isn't already resolved, so we
3225 // need to check again.
3226 __ br_notnull( Rtemp, false, Assembler::pt, ok);
3227 __ delayed()->nop();
3228 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_IncompatibleClassChangeError));
3229 __ should_not_reach_here();
3230 __ bind(ok);
3231 __ verify_oop(Rtemp);
3232 }
3233
3234 __ verify_oop(Rinterface);
3235
3236 __ cmp(Rinterface, Rtemp);
3237 __ brx(Assembler::notEqual, true, Assembler::pn, search);
3238 __ delayed()->add(Rscratch, itableOffsetEntry::size() * wordSize, Rscratch);
3239
3240 // entry found and Rscratch points to it
3241 __ ld(Rscratch, itableOffsetEntry::offset_offset_in_bytes(), Rscratch);
3242
3243 assert(itableMethodEntry::method_offset_in_bytes() == 0, "adjust instruction below");
3244 __ sll(Rindex, exact_log2(itableMethodEntry::size() * wordSize), Rindex); // Rindex *= 8;
3245 __ add(Rscratch, Rindex, Rscratch);
3246 __ ld_ptr(RklassOop, Rscratch, G5_method);
3247
3248 // Check for abstract method error.
3249 {
3250 Label ok;
3251 __ tst(G5_method);
3252 __ brx(Assembler::notZero, false, Assembler::pt, ok);
3253 __ delayed()->nop();
3254 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
3255 __ should_not_reach_here();
3256 __ bind(ok);
3257 }
3258
3259 Register Rcall = Rinterface;
3260 assert_different_registers(Rcall, G5_method, Gargs, Rret);
3261
3262 __ verify_oop(G5_method);
3263 __ call_from_interpreter(Rcall, Gargs, Rret);
3264
3265 }
3266
3267
3268 void TemplateTable::invokedynamic(int byte_no) {
3269 transition(vtos, vtos);
3270 assert(byte_no == f1_oop, "use this argument");
3271
3272 if (!EnableInvokeDynamic) {
3273 // We should not encounter this bytecode if !EnableInvokeDynamic.
3274 // The verifier will stop it. However, if we get past the verifier,
3275 // this will stop the thread in a reasonable way, without crashing the JVM.
3276 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
3277 InterpreterRuntime::throw_IncompatibleClassChangeError));
3278 // the call_VM checks for exception, so we should never return here.
3279 __ should_not_reach_here();
3280 return;
3281 }
3282
3283 // G5: CallSite object (f1)
3284 // XX: unused (f2)
3285 // XX: flags (unused)
3286
3287 Register G5_callsite = G5_method;
3288 Register Rscratch = G3_scratch;
3289 Register Rtemp = G1_scratch;
3290 Register Rret = Lscratch;
3291
3292 load_invoke_cp_cache_entry(byte_no, G5_callsite, noreg, Rret,
3293 /*virtual*/ false, /*vfinal*/ false, /*indy*/ true);
3294 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3295
3296 __ verify_oop(G5_callsite);
3297
3298 // profile this call
3299 __ profile_call(O4);
3300
3301 // get return address
3302 AddressLiteral table(Interpreter::return_5_addrs_by_index_table());
3303 __ set(table, Rtemp);
3304 __ srl(Rret, ConstantPoolCacheEntry::tosBits, Rret); // get return type
3305 // Make sure we don't need to mask Rret for tosBits after the above shift
3306 ConstantPoolCacheEntry::verify_tosBits();
3307 __ sll(Rret, LogBytesPerWord, Rret);
3308 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3309
3310 __ load_heap_oop(G5_callsite, __ delayed_value(java_dyn_CallSite::target_offset_in_bytes, Rscratch), G3_method_handle);
3311 __ null_check(G3_method_handle);
3312
3313 // Adjust Rret first so Llast_SP can be same as Rret
3314 __ add(Rret, -frame::pc_return_offset, O7);
3315 __ add(Lesp, BytesPerWord, Gargs); // setup parameter pointer
3316 __ jump_to_method_handle_entry(G3_method_handle, Rtemp, /* emit_delayed_nop */ false);
3317 // Record SP so we can remove any stack space allocated by adapter transition
3318 __ delayed()->mov(SP, Llast_SP);
3319 }
3320
3321
3322 //----------------------------------------------------------------------------------------------------
3323 // Allocation
3324
3325 void TemplateTable::_new() {
3326 transition(vtos, atos);
3327
3328 Label slow_case;
3329 Label done;
3330 Label initialize_header;
3331 Label initialize_object; // including clearing the fields
3332
3333 Register RallocatedObject = Otos_i;
3334 Register RinstanceKlass = O1;
3335 Register Roffset = O3;
3336 Register Rscratch = O4;
3337
3338 __ get_2_byte_integer_at_bcp(1, Rscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3339 __ get_cpool_and_tags(Rscratch, G3_scratch);
3340 // make sure the class we're about to instantiate has been resolved
3341 // This is done before loading instanceKlass to be consistent with the order
3342 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put)
3343 __ add(G3_scratch, typeArrayOopDesc::header_size(T_BYTE) * wordSize, G3_scratch);
3344 __ ldub(G3_scratch, Roffset, G3_scratch);
3345 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3346 __ br(Assembler::notEqual, false, Assembler::pn, slow_case);
3347 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3348 // get instanceKlass
3349 //__ sll(Roffset, LogBytesPerWord, Roffset); // executed in delay slot
3350 __ add(Roffset, sizeof(constantPoolOopDesc), Roffset);
3351 __ ld_ptr(Rscratch, Roffset, RinstanceKlass);
3352
3353 // make sure klass is fully initialized:
3354 __ ld(RinstanceKlass, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), G3_scratch);
3355 __ cmp(G3_scratch, instanceKlass::fully_initialized);
3356 __ br(Assembler::notEqual, false, Assembler::pn, slow_case);
3357 __ delayed()->ld(RinstanceKlass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc), Roffset);
3358
3359 // get instance_size in instanceKlass (already aligned)
3360 //__ ld(RinstanceKlass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc), Roffset);
3361
3362 // make sure klass does not have has_finalizer, or is abstract, or interface or java/lang/Class
3363 __ btst(Klass::_lh_instance_slow_path_bit, Roffset);
3364 __ br(Assembler::notZero, false, Assembler::pn, slow_case);
3365 __ delayed()->nop();
3366
3367 // allocate the instance
3368 // 1) Try to allocate in the TLAB
3369 // 2) if fail, and the TLAB is not full enough to discard, allocate in the shared Eden
3370 // 3) if the above fails (or is not applicable), go to a slow case
3371 // (creates a new TLAB, etc.)
3372
3373 const bool allow_shared_alloc =
3374 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode;
3375
3376 if(UseTLAB) {
3377 Register RoldTopValue = RallocatedObject;
3378 Register RtopAddr = G3_scratch, RtlabWasteLimitValue = G3_scratch;
3379 Register RnewTopValue = G1_scratch;
3380 Register RendValue = Rscratch;
3381 Register RfreeValue = RnewTopValue;
3382
3383 // check if we can allocate in the TLAB
3384 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), RoldTopValue); // sets up RalocatedObject
3385 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_end_offset()), RendValue);
3386 __ add(RoldTopValue, Roffset, RnewTopValue);
3387
3388 // if there is enough space, we do not CAS and do not clear
3389 __ cmp(RnewTopValue, RendValue);
3390 if(ZeroTLAB) {
3391 // the fields have already been cleared
3392 __ brx(Assembler::lessEqualUnsigned, true, Assembler::pt, initialize_header);
3393 } else {
3394 // initialize both the header and fields
3395 __ brx(Assembler::lessEqualUnsigned, true, Assembler::pt, initialize_object);
3396 }
3397 __ delayed()->st_ptr(RnewTopValue, G2_thread, in_bytes(JavaThread::tlab_top_offset()));
3398
3399 if (allow_shared_alloc) {
3400 // Check if tlab should be discarded (refill_waste_limit >= free)
3401 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()), RtlabWasteLimitValue);
3402 __ sub(RendValue, RoldTopValue, RfreeValue);
3403 #ifdef _LP64
3404 __ srlx(RfreeValue, LogHeapWordSize, RfreeValue);
3405 #else
3406 __ srl(RfreeValue, LogHeapWordSize, RfreeValue);
3407 #endif
3408 __ cmp(RtlabWasteLimitValue, RfreeValue);
3409 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, slow_case); // tlab waste is small
3410 __ delayed()->nop();
3411
3412 // increment waste limit to prevent getting stuck on this slow path
3413 __ add(RtlabWasteLimitValue, ThreadLocalAllocBuffer::refill_waste_limit_increment(), RtlabWasteLimitValue);
3414 __ st_ptr(RtlabWasteLimitValue, G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()));
3415 } else {
3416 // No allocation in the shared eden.
3417 __ br(Assembler::always, false, Assembler::pt, slow_case);
3418 __ delayed()->nop();
3419 }
3420 }
3421
3422 // Allocation in the shared Eden
3423 if (allow_shared_alloc) {
3424 Register RoldTopValue = G1_scratch;
3425 Register RtopAddr = G3_scratch;
3426 Register RnewTopValue = RallocatedObject;
3427 Register RendValue = Rscratch;
3428
3429 __ set((intptr_t)Universe::heap()->top_addr(), RtopAddr);
3430
3431 Label retry;
3432 __ bind(retry);
3433 __ set((intptr_t)Universe::heap()->end_addr(), RendValue);
3434 __ ld_ptr(RendValue, 0, RendValue);
3435 __ ld_ptr(RtopAddr, 0, RoldTopValue);
3436 __ add(RoldTopValue, Roffset, RnewTopValue);
3437
3438 // RnewTopValue contains the top address after the new object
3439 // has been allocated.
3440 __ cmp(RnewTopValue, RendValue);
3441 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, slow_case);
3442 __ delayed()->nop();
3443
3444 __ casx_under_lock(RtopAddr, RoldTopValue, RnewTopValue,
3445 VM_Version::v9_instructions_work() ? NULL :
3446 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr());
3447
3448 // if someone beat us on the allocation, try again, otherwise continue
3449 __ cmp(RoldTopValue, RnewTopValue);
3450 __ brx(Assembler::notEqual, false, Assembler::pn, retry);
3451 __ delayed()->nop();
3452
3453 // bump total bytes allocated by this thread
3454 // RoldTopValue and RtopAddr are dead, so can use G1 and G3
3455 __ incr_allocated_bytes(Roffset, G1_scratch, G3_scratch);
3456 }
3457
3458 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {
3459 // clear object fields
3460 __ bind(initialize_object);
3461 __ deccc(Roffset, sizeof(oopDesc));
3462 __ br(Assembler::zero, false, Assembler::pt, initialize_header);
3463 __ delayed()->add(RallocatedObject, sizeof(oopDesc), G3_scratch);
3464
3465 // initialize remaining object fields
3466 { Label loop;
3467 __ subcc(Roffset, wordSize, Roffset);
3468 __ bind(loop);
3469 //__ subcc(Roffset, wordSize, Roffset); // executed above loop or in delay slot
3470 __ st_ptr(G0, G3_scratch, Roffset);
3471 __ br(Assembler::notEqual, false, Assembler::pt, loop);
3472 __ delayed()->subcc(Roffset, wordSize, Roffset);
3473 }
3474 __ br(Assembler::always, false, Assembler::pt, initialize_header);
3475 __ delayed()->nop();
3476 }
3477
3478 // slow case
3479 __ bind(slow_case);
3480 __ get_2_byte_integer_at_bcp(1, G3_scratch, O2, InterpreterMacroAssembler::Unsigned);
3481 __ get_constant_pool(O1);
3482
3483 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), O1, O2);
3484
3485 __ ba(false, done);
3486 __ delayed()->nop();
3487
3488 // Initialize the header: mark, klass
3489 __ bind(initialize_header);
3490
3491 if (UseBiasedLocking) {
3492 __ ld_ptr(RinstanceKlass, Klass::prototype_header_offset_in_bytes() + sizeof(oopDesc), G4_scratch);
3493 } else {
3494 __ set((intptr_t)markOopDesc::prototype(), G4_scratch);
3495 }
3496 __ st_ptr(G4_scratch, RallocatedObject, oopDesc::mark_offset_in_bytes()); // mark
3497 __ store_klass_gap(G0, RallocatedObject); // klass gap if compressed
3498 __ store_klass(RinstanceKlass, RallocatedObject); // klass (last for cms)
3499
3500 {
3501 SkipIfEqual skip_if(
3502 _masm, G4_scratch, &DTraceAllocProbes, Assembler::zero);
3503 // Trigger dtrace event
3504 __ push(atos);
3505 __ call_VM_leaf(noreg,
3506 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), O0);
3507 __ pop(atos);
3508 }
3509
3510 // continue
3511 __ bind(done);
3512 }
3513
3514
3515
3516 void TemplateTable::newarray() {
3517 transition(itos, atos);
3518 __ ldub(Lbcp, 1, O1);
3519 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), O1, Otos_i);
3520 }
3521
3522
3523 void TemplateTable::anewarray() {
3524 transition(itos, atos);
3525 __ get_constant_pool(O1);
3526 __ get_2_byte_integer_at_bcp(1, G4_scratch, O2, InterpreterMacroAssembler::Unsigned);
3527 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), O1, O2, Otos_i);
3528 }
3529
3530
3531 void TemplateTable::arraylength() {
3532 transition(atos, itos);
3533 Label ok;
3534 __ verify_oop(Otos_i);
3535 __ tst(Otos_i);
3536 __ throw_if_not_1_x( Assembler::notZero, ok );
3537 __ delayed()->ld(Otos_i, arrayOopDesc::length_offset_in_bytes(), Otos_i);
3538 __ throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ok);
3539 }
3540
3541
3542 void TemplateTable::checkcast() {
3543 transition(atos, atos);
3544 Label done, is_null, quicked, cast_ok, resolved;
3545 Register Roffset = G1_scratch;
3546 Register RobjKlass = O5;
3547 Register RspecifiedKlass = O4;
3548
3549 // Check for casting a NULL
3550 __ br_null(Otos_i, false, Assembler::pn, is_null);
3551 __ delayed()->nop();
3552
3553 // Get value klass in RobjKlass
3554 __ load_klass(Otos_i, RobjKlass); // get value klass
3555
3556 // Get constant pool tag
3557 __ get_2_byte_integer_at_bcp(1, Lscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3558
3559 // See if the checkcast has been quickened
3560 __ get_cpool_and_tags(Lscratch, G3_scratch);
3561 __ add(G3_scratch, typeArrayOopDesc::header_size(T_BYTE) * wordSize, G3_scratch);
3562 __ ldub(G3_scratch, Roffset, G3_scratch);
3563 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3564 __ br(Assembler::equal, true, Assembler::pt, quicked);
3565 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3566
3567 __ push_ptr(); // save receiver for result, and for GC
3568 call_VM(RspecifiedKlass, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
3569 __ pop_ptr(Otos_i, G3_scratch); // restore receiver
3570
3571 __ br(Assembler::always, false, Assembler::pt, resolved);
3572 __ delayed()->nop();
3573
3574 // Extract target class from constant pool
3575 __ bind(quicked);
3576 __ add(Roffset, sizeof(constantPoolOopDesc), Roffset);
3577 __ ld_ptr(Lscratch, Roffset, RspecifiedKlass);
3578 __ bind(resolved);
3579 __ load_klass(Otos_i, RobjKlass); // get value klass
3580
3581 // Generate a fast subtype check. Branch to cast_ok if no
3582 // failure. Throw exception if failure.
3583 __ gen_subtype_check( RobjKlass, RspecifiedKlass, G3_scratch, G4_scratch, G1_scratch, cast_ok );
3584
3585 // Not a subtype; so must throw exception
3586 __ throw_if_not_x( Assembler::never, Interpreter::_throw_ClassCastException_entry, G3_scratch );
3587
3588 __ bind(cast_ok);
3589
3590 if (ProfileInterpreter) {
3591 __ ba(false, done);
3592 __ delayed()->nop();
3593 }
3594 __ bind(is_null);
3595 __ profile_null_seen(G3_scratch);
3596 __ bind(done);
3597 }
3598
3599
3600 void TemplateTable::instanceof() {
3601 Label done, is_null, quicked, resolved;
3602 transition(atos, itos);
3603 Register Roffset = G1_scratch;
3604 Register RobjKlass = O5;
3605 Register RspecifiedKlass = O4;
3606
3607 // Check for casting a NULL
3608 __ br_null(Otos_i, false, Assembler::pt, is_null);
3609 __ delayed()->nop();
3610
3611 // Get value klass in RobjKlass
3612 __ load_klass(Otos_i, RobjKlass); // get value klass
3613
3614 // Get constant pool tag
3615 __ get_2_byte_integer_at_bcp(1, Lscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3616
3617 // See if the checkcast has been quickened
3618 __ get_cpool_and_tags(Lscratch, G3_scratch);
3619 __ add(G3_scratch, typeArrayOopDesc::header_size(T_BYTE) * wordSize, G3_scratch);
3620 __ ldub(G3_scratch, Roffset, G3_scratch);
3621 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3622 __ br(Assembler::equal, true, Assembler::pt, quicked);
3623 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3624
3625 __ push_ptr(); // save receiver for result, and for GC
3626 call_VM(RspecifiedKlass, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
3627 __ pop_ptr(Otos_i, G3_scratch); // restore receiver
3628
3629 __ br(Assembler::always, false, Assembler::pt, resolved);
3630 __ delayed()->nop();
3631
3632
3633 // Extract target class from constant pool
3634 __ bind(quicked);
3635 __ add(Roffset, sizeof(constantPoolOopDesc), Roffset);
3636 __ get_constant_pool(Lscratch);
3637 __ ld_ptr(Lscratch, Roffset, RspecifiedKlass);
3638 __ bind(resolved);
3639 __ load_klass(Otos_i, RobjKlass); // get value klass
3640
3641 // Generate a fast subtype check. Branch to cast_ok if no
3642 // failure. Return 0 if failure.
3643 __ or3(G0, 1, Otos_i); // set result assuming quick tests succeed
3644 __ gen_subtype_check( RobjKlass, RspecifiedKlass, G3_scratch, G4_scratch, G1_scratch, done );
3645 // Not a subtype; return 0;
3646 __ clr( Otos_i );
3647
3648 if (ProfileInterpreter) {
3649 __ ba(false, done);
3650 __ delayed()->nop();
3651 }
3652 __ bind(is_null);
3653 __ profile_null_seen(G3_scratch);
3654 __ bind(done);
3655 }
3656
3657 void TemplateTable::_breakpoint() {
3658
3659 // Note: We get here even if we are single stepping..
3660 // jbug inists on setting breakpoints at every bytecode
3661 // even if we are in single step mode.
3662
3663 transition(vtos, vtos);
3664 // get the unpatched byte code
3665 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), Lmethod, Lbcp);
3666 __ mov(O0, Lbyte_code);
3667
3668 // post the breakpoint event
3669 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), Lmethod, Lbcp);
3670
3671 // complete the execution of original bytecode
3672 __ dispatch_normal(vtos);
3673 }
3674
3675
3676 //----------------------------------------------------------------------------------------------------
3677 // Exceptions
3678
3679 void TemplateTable::athrow() {
3680 transition(atos, vtos);
3681
3682 // This works because exception is cached in Otos_i which is same as O0,
3683 // which is same as what throw_exception_entry_expects
3684 assert(Otos_i == Oexception, "see explanation above");
3685
3686 __ verify_oop(Otos_i);
3687 __ null_check(Otos_i);
3688 __ throw_if_not_x(Assembler::never, Interpreter::throw_exception_entry(), G3_scratch);
3689 }
3690
3691
3692 //----------------------------------------------------------------------------------------------------
3693 // Synchronization
3694
3695
3696 // See frame_sparc.hpp for monitor block layout.
3697 // Monitor elements are dynamically allocated by growing stack as needed.
3698
3699 void TemplateTable::monitorenter() {
3700 transition(atos, vtos);
3701 __ verify_oop(Otos_i);
3702 // Try to acquire a lock on the object
3703 // Repeat until succeeded (i.e., until
3704 // monitorenter returns true).
3705
3706 { Label ok;
3707 __ tst(Otos_i);
3708 __ throw_if_not_1_x( Assembler::notZero, ok);
3709 __ delayed()->mov(Otos_i, Lscratch); // save obj
3710 __ throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ok);
3711 }
3712
3713 assert(O0 == Otos_i, "Be sure where the object to lock is");
3714
3715 // find a free slot in the monitor block
3716
3717
3718 // initialize entry pointer
3719 __ clr(O1); // points to free slot or NULL
3720
3721 {
3722 Label entry, loop, exit;
3723 __ add( __ top_most_monitor(), O2 ); // last one to check
3724 __ ba( false, entry );
3725 __ delayed()->mov( Lmonitors, O3 ); // first one to check
3726
3727
3728 __ bind( loop );
3729
3730 __ verify_oop(O4); // verify each monitor's oop
3731 __ tst(O4); // is this entry unused?
3732 if (VM_Version::v9_instructions_work())
3733 __ movcc( Assembler::zero, false, Assembler::ptr_cc, O3, O1);
3734 else {
3735 Label L;
3736 __ br( Assembler::zero, true, Assembler::pn, L );
3737 __ delayed()->mov(O3, O1); // rememeber this one if match
3738 __ bind(L);
3739 }
3740
3741 __ cmp(O4, O0); // check if current entry is for same object
3742 __ brx( Assembler::equal, false, Assembler::pn, exit );
3743 __ delayed()->inc( O3, frame::interpreter_frame_monitor_size() * wordSize ); // check next one
3744
3745 __ bind( entry );
3746
3747 __ cmp( O3, O2 );
3748 __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, loop );
3749 __ delayed()->ld_ptr(O3, BasicObjectLock::obj_offset_in_bytes(), O4);
3750
3751 __ bind( exit );
3752 }
3753
3754 { Label allocated;
3755
3756 // found free slot?
3757 __ br_notnull(O1, false, Assembler::pn, allocated);
3758 __ delayed()->nop();
3759
3760 __ add_monitor_to_stack( false, O2, O3 );
3761 __ mov(Lmonitors, O1);
3762
3763 __ bind(allocated);
3764 }
3765
3766 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly.
3767 // The object has already been poped from the stack, so the expression stack looks correct.
3768 __ inc(Lbcp);
3769
3770 __ st_ptr(O0, O1, BasicObjectLock::obj_offset_in_bytes()); // store object
3771 __ lock_object(O1, O0);
3772
3773 // check if there's enough space on the stack for the monitors after locking
3774 __ generate_stack_overflow_check(0);
3775
3776 // The bcp has already been incremented. Just need to dispatch to next instruction.
3777 __ dispatch_next(vtos);
3778 }
3779
3780
3781 void TemplateTable::monitorexit() {
3782 transition(atos, vtos);
3783 __ verify_oop(Otos_i);
3784 __ tst(Otos_i);
3785 __ throw_if_not_x( Assembler::notZero, Interpreter::_throw_NullPointerException_entry, G3_scratch );
3786
3787 assert(O0 == Otos_i, "just checking");
3788
3789 { Label entry, loop, found;
3790 __ add( __ top_most_monitor(), O2 ); // last one to check
3791 __ ba(false, entry );
3792 // use Lscratch to hold monitor elem to check, start with most recent monitor,
3793 // By using a local it survives the call to the C routine.
3794 __ delayed()->mov( Lmonitors, Lscratch );
3795
3796 __ bind( loop );
3797
3798 __ verify_oop(O4); // verify each monitor's oop
3799 __ cmp(O4, O0); // check if current entry is for desired object
3800 __ brx( Assembler::equal, true, Assembler::pt, found );
3801 __ delayed()->mov(Lscratch, O1); // pass found entry as argument to monitorexit
3802
3803 __ inc( Lscratch, frame::interpreter_frame_monitor_size() * wordSize ); // advance to next
3804
3805 __ bind( entry );
3806
3807 __ cmp( Lscratch, O2 );
3808 __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, loop );
3809 __ delayed()->ld_ptr(Lscratch, BasicObjectLock::obj_offset_in_bytes(), O4);
3810
3811 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
3812 __ should_not_reach_here();
3813
3814 __ bind(found);
3815 }
3816 __ unlock_object(O1);
3817 }
3818
3819
3820 //----------------------------------------------------------------------------------------------------
3821 // Wide instructions
3822
3823 void TemplateTable::wide() {
3824 transition(vtos, vtos);
3825 __ ldub(Lbcp, 1, G3_scratch);// get next bc
3826 __ sll(G3_scratch, LogBytesPerWord, G3_scratch);
3827 AddressLiteral ep(Interpreter::_wentry_point);
3828 __ set(ep, G4_scratch);
3829 __ ld_ptr(G4_scratch, G3_scratch, G3_scratch);
3830 __ jmp(G3_scratch, G0);
3831 __ delayed()->nop();
3832 // Note: the Lbcp increment step is part of the individual wide bytecode implementations
3833 }
3834
3835
3836 //----------------------------------------------------------------------------------------------------
3837 // Multi arrays
3838
3839 void TemplateTable::multianewarray() {
3840 transition(vtos, atos);
3841 // put ndims * wordSize into Lscratch
3842 __ ldub( Lbcp, 3, Lscratch);
3843 __ sll( Lscratch, Interpreter::logStackElementSize, Lscratch);
3844 // Lesp points past last_dim, so set to O1 to first_dim address
3845 __ add( Lesp, Lscratch, O1);
3846 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), O1);
3847 __ add( Lesp, Lscratch, Lesp); // pop all dimensions off the stack
3848 }
3849 #endif /* !CC_INTERP */