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