Mercurial > jdk8-mips64-public > hotspot / file revision
src/cpu/sparc/vm/templateTable_sparc.cpp@f8a45a60bc6b
src/cpu/sparc/vm/templateTable_sparc.cpp
Fri, 29 Sep 2017 14:30:05 -0400
- author
- dbuck
- date
- Fri, 29 Sep 2017 14:30:05 -0400
- changeset 8997
- f8a45a60bc6b
- parent 8368
- 32b682649973
- child 9041
- 95a08233f46c
- permissions
- -rw-r--r--
8174962: Better interface invocations
Reviewed-by: jrose, coleenp, ahgross, acorn, vlivanov
1 /*
2 * Copyright (c) 1997, 2017, 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 */
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/methodData.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 #include "utilities/macros.hpp"
39 #ifndef CC_INTERP
40 #define __ _masm->
42 // Misc helpers
44 // Do an oop store like *(base + index + offset) = val
45 // index can be noreg,
46 static void do_oop_store(InterpreterMacroAssembler* _masm,
47 Register base,
48 Register index,
49 int offset,
50 Register val,
51 Register tmp,
52 BarrierSet::Name barrier,
53 bool precise) {
54 assert(tmp != val && tmp != base && tmp != index, "register collision");
55 assert(index == noreg || offset == 0, "only one offset");
56 switch (barrier) {
57 #if INCLUDE_ALL_GCS
58 case BarrierSet::G1SATBCT:
59 case BarrierSet::G1SATBCTLogging:
60 {
61 // Load and record the previous value.
62 __ g1_write_barrier_pre(base, index, offset,
63 noreg /* pre_val */,
64 tmp, true /*preserve_o_regs*/);
66 // G1 barrier needs uncompressed oop for region cross check.
67 Register new_val = val;
68 if (UseCompressedOops && val != G0) {
69 new_val = tmp;
70 __ mov(val, new_val);
71 }
73 if (index == noreg ) {
74 assert(Assembler::is_simm13(offset), "fix this code");
75 __ store_heap_oop(val, base, offset);
76 } else {
77 __ store_heap_oop(val, base, index);
78 }
80 // No need for post barrier if storing NULL
81 if (val != G0) {
82 if (precise) {
83 if (index == noreg) {
84 __ add(base, offset, base);
85 } else {
86 __ add(base, index, base);
87 }
88 }
89 __ g1_write_barrier_post(base, new_val, tmp);
90 }
91 }
92 break;
93 #endif // INCLUDE_ALL_GCS
94 case BarrierSet::CardTableModRef:
95 case BarrierSet::CardTableExtension:
96 {
97 if (index == noreg ) {
98 assert(Assembler::is_simm13(offset), "fix this code");
99 __ store_heap_oop(val, base, offset);
100 } else {
101 __ store_heap_oop(val, base, index);
102 }
103 // No need for post barrier if storing NULL
104 if (val != G0) {
105 if (precise) {
106 if (index == noreg) {
107 __ add(base, offset, base);
108 } else {
109 __ add(base, index, base);
110 }
111 }
112 __ card_write_barrier_post(base, val, tmp);
113 }
114 }
115 break;
116 case BarrierSet::ModRef:
117 case BarrierSet::Other:
118 ShouldNotReachHere();
119 break;
120 default :
121 ShouldNotReachHere();
123 }
124 }
127 //----------------------------------------------------------------------------------------------------
128 // Platform-dependent initialization
130 void TemplateTable::pd_initialize() {
131 // (none)
132 }
135 //----------------------------------------------------------------------------------------------------
136 // Condition conversion
137 Assembler::Condition ccNot(TemplateTable::Condition cc) {
138 switch (cc) {
139 case TemplateTable::equal : return Assembler::notEqual;
140 case TemplateTable::not_equal : return Assembler::equal;
141 case TemplateTable::less : return Assembler::greaterEqual;
142 case TemplateTable::less_equal : return Assembler::greater;
143 case TemplateTable::greater : return Assembler::lessEqual;
144 case TemplateTable::greater_equal: return Assembler::less;
145 }
146 ShouldNotReachHere();
147 return Assembler::zero;
148 }
150 //----------------------------------------------------------------------------------------------------
151 // Miscelaneous helper routines
154 Address TemplateTable::at_bcp(int offset) {
155 assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
156 return Address(Lbcp, offset);
157 }
160 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
161 Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
162 int byte_no) {
163 // With sharing on, may need to test Method* flag.
164 if (!RewriteBytecodes) return;
165 Label L_patch_done;
167 switch (bc) {
168 case Bytecodes::_fast_aputfield:
169 case Bytecodes::_fast_bputfield:
170 case Bytecodes::_fast_zputfield:
171 case Bytecodes::_fast_cputfield:
172 case Bytecodes::_fast_dputfield:
173 case Bytecodes::_fast_fputfield:
174 case Bytecodes::_fast_iputfield:
175 case Bytecodes::_fast_lputfield:
176 case Bytecodes::_fast_sputfield:
177 {
178 // We skip bytecode quickening for putfield instructions when
179 // the put_code written to the constant pool cache is zero.
180 // This is required so that every execution of this instruction
181 // calls out to InterpreterRuntime::resolve_get_put to do
182 // additional, required work.
183 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
184 assert(load_bc_into_bc_reg, "we use bc_reg as temp");
185 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1);
186 __ set(bc, bc_reg);
187 __ cmp_and_br_short(temp_reg, 0, Assembler::equal, Assembler::pn, L_patch_done); // don't patch
188 }
189 break;
190 default:
191 assert(byte_no == -1, "sanity");
192 if (load_bc_into_bc_reg) {
193 __ set(bc, bc_reg);
194 }
195 }
197 if (JvmtiExport::can_post_breakpoint()) {
198 Label L_fast_patch;
199 __ ldub(at_bcp(0), temp_reg);
200 __ cmp_and_br_short(temp_reg, Bytecodes::_breakpoint, Assembler::notEqual, Assembler::pt, L_fast_patch);
201 // perform the quickening, slowly, in the bowels of the breakpoint table
202 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), Lmethod, Lbcp, bc_reg);
203 __ ba_short(L_patch_done);
204 __ bind(L_fast_patch);
205 }
207 #ifdef ASSERT
208 Bytecodes::Code orig_bytecode = Bytecodes::java_code(bc);
209 Label L_okay;
210 __ ldub(at_bcp(0), temp_reg);
211 __ cmp(temp_reg, orig_bytecode);
212 __ br(Assembler::equal, false, Assembler::pt, L_okay);
213 __ delayed()->cmp(temp_reg, bc_reg);
214 __ br(Assembler::equal, false, Assembler::pt, L_okay);
215 __ delayed()->nop();
216 __ stop("patching the wrong bytecode");
217 __ bind(L_okay);
218 #endif
220 // patch bytecode
221 __ stb(bc_reg, at_bcp(0));
222 __ bind(L_patch_done);
223 }
225 //----------------------------------------------------------------------------------------------------
226 // Individual instructions
228 void TemplateTable::nop() {
229 transition(vtos, vtos);
230 // nothing to do
231 }
233 void TemplateTable::shouldnotreachhere() {
234 transition(vtos, vtos);
235 __ stop("shouldnotreachhere bytecode");
236 }
238 void TemplateTable::aconst_null() {
239 transition(vtos, atos);
240 __ clr(Otos_i);
241 }
244 void TemplateTable::iconst(int value) {
245 transition(vtos, itos);
246 __ set(value, Otos_i);
247 }
250 void TemplateTable::lconst(int value) {
251 transition(vtos, ltos);
252 assert(value >= 0, "check this code");
253 #ifdef _LP64
254 __ set(value, Otos_l);
255 #else
256 __ set(value, Otos_l2);
257 __ clr( Otos_l1);
258 #endif
259 }
262 void TemplateTable::fconst(int value) {
263 transition(vtos, ftos);
264 static float zero = 0.0, one = 1.0, two = 2.0;
265 float* p;
266 switch( value ) {
267 default: ShouldNotReachHere();
268 case 0: p = &zero; break;
269 case 1: p = &one; break;
270 case 2: p = &two; break;
271 }
272 AddressLiteral a(p);
273 __ sethi(a, G3_scratch);
274 __ ldf(FloatRegisterImpl::S, G3_scratch, a.low10(), Ftos_f);
275 }
278 void TemplateTable::dconst(int value) {
279 transition(vtos, dtos);
280 static double zero = 0.0, one = 1.0;
281 double* p;
282 switch( value ) {
283 default: ShouldNotReachHere();
284 case 0: p = &zero; break;
285 case 1: p = &one; break;
286 }
287 AddressLiteral a(p);
288 __ sethi(a, G3_scratch);
289 __ ldf(FloatRegisterImpl::D, G3_scratch, a.low10(), Ftos_d);
290 }
293 // %%%%% Should factore most snippet templates across platforms
295 void TemplateTable::bipush() {
296 transition(vtos, itos);
297 __ ldsb( at_bcp(1), Otos_i );
298 }
300 void TemplateTable::sipush() {
301 transition(vtos, itos);
302 __ get_2_byte_integer_at_bcp(1, G3_scratch, Otos_i, InterpreterMacroAssembler::Signed);
303 }
305 void TemplateTable::ldc(bool wide) {
306 transition(vtos, vtos);
307 Label call_ldc, notInt, isString, notString, notClass, exit;
309 if (wide) {
310 __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
311 } else {
312 __ ldub(Lbcp, 1, O1);
313 }
314 __ get_cpool_and_tags(O0, O2);
316 const int base_offset = ConstantPool::header_size() * wordSize;
317 const int tags_offset = Array<u1>::base_offset_in_bytes();
319 // get type from tags
320 __ add(O2, tags_offset, O2);
321 __ ldub(O2, O1, O2);
323 // unresolved class? If so, must resolve
324 __ cmp_and_brx_short(O2, JVM_CONSTANT_UnresolvedClass, Assembler::equal, Assembler::pt, call_ldc);
326 // unresolved class in error state
327 __ cmp_and_brx_short(O2, JVM_CONSTANT_UnresolvedClassInError, Assembler::equal, Assembler::pn, call_ldc);
329 __ cmp(O2, JVM_CONSTANT_Class); // need to call vm to get java mirror of the class
330 __ brx(Assembler::notEqual, true, Assembler::pt, notClass);
331 __ delayed()->add(O0, base_offset, O0);
333 __ bind(call_ldc);
334 __ set(wide, O1);
335 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), O1);
336 __ push(atos);
337 __ ba_short(exit);
339 __ bind(notClass);
340 // __ add(O0, base_offset, O0);
341 __ sll(O1, LogBytesPerWord, O1);
342 __ cmp(O2, JVM_CONSTANT_Integer);
343 __ brx(Assembler::notEqual, true, Assembler::pt, notInt);
344 __ delayed()->cmp(O2, JVM_CONSTANT_String);
345 __ ld(O0, O1, Otos_i);
346 __ push(itos);
347 __ ba_short(exit);
349 __ bind(notInt);
350 // __ cmp(O2, JVM_CONSTANT_String);
351 __ brx(Assembler::notEqual, true, Assembler::pt, notString);
352 __ delayed()->ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
353 __ bind(isString);
354 __ stop("string should be rewritten to fast_aldc");
355 __ ba_short(exit);
357 __ bind(notString);
358 // __ ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
359 __ push(ftos);
361 __ bind(exit);
362 }
364 // Fast path for caching oop constants.
365 // %%% We should use this to handle Class and String constants also.
366 // %%% It will simplify the ldc/primitive path considerably.
367 void TemplateTable::fast_aldc(bool wide) {
368 transition(vtos, atos);
370 int index_size = wide ? sizeof(u2) : sizeof(u1);
371 Label resolved;
373 // We are resolved if the resolved reference cache entry contains a
374 // non-null object (CallSite, etc.)
375 assert_different_registers(Otos_i, G3_scratch);
376 __ get_cache_index_at_bcp(Otos_i, G3_scratch, 1, index_size); // load index => G3_scratch
377 __ load_resolved_reference_at_index(Otos_i, G3_scratch);
378 __ tst(Otos_i);
379 __ br(Assembler::notEqual, false, Assembler::pt, resolved);
380 __ delayed()->set((int)bytecode(), O1);
382 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
384 // first time invocation - must resolve first
385 __ call_VM(Otos_i, entry, O1);
386 __ bind(resolved);
387 __ verify_oop(Otos_i);
388 }
391 void TemplateTable::ldc2_w() {
392 transition(vtos, vtos);
393 Label Long, exit;
395 __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
396 __ get_cpool_and_tags(O0, O2);
398 const int base_offset = ConstantPool::header_size() * wordSize;
399 const int tags_offset = Array<u1>::base_offset_in_bytes();
400 // get type from tags
401 __ add(O2, tags_offset, O2);
402 __ ldub(O2, O1, O2);
404 __ sll(O1, LogBytesPerWord, O1);
405 __ add(O0, O1, G3_scratch);
407 __ cmp_and_brx_short(O2, JVM_CONSTANT_Double, Assembler::notEqual, Assembler::pt, Long);
408 // A double can be placed at word-aligned locations in the constant pool.
409 // Check out Conversions.java for an example.
410 // Also ConstantPool::header_size() is 20, which makes it very difficult
411 // to double-align double on the constant pool. SG, 11/7/97
412 #ifdef _LP64
413 __ ldf(FloatRegisterImpl::D, G3_scratch, base_offset, Ftos_d);
414 #else
415 FloatRegister f = Ftos_d;
416 __ ldf(FloatRegisterImpl::S, G3_scratch, base_offset, f);
417 __ ldf(FloatRegisterImpl::S, G3_scratch, base_offset + sizeof(jdouble)/2,
418 f->successor());
419 #endif
420 __ push(dtos);
421 __ ba_short(exit);
423 __ bind(Long);
424 #ifdef _LP64
425 __ ldx(G3_scratch, base_offset, Otos_l);
426 #else
427 __ ld(G3_scratch, base_offset, Otos_l);
428 __ ld(G3_scratch, base_offset + sizeof(jlong)/2, Otos_l->successor());
429 #endif
430 __ push(ltos);
432 __ bind(exit);
433 }
436 void TemplateTable::locals_index(Register reg, int offset) {
437 __ ldub( at_bcp(offset), reg );
438 }
441 void TemplateTable::locals_index_wide(Register reg) {
442 // offset is 2, not 1, because Lbcp points to wide prefix code
443 __ get_2_byte_integer_at_bcp(2, G4_scratch, reg, InterpreterMacroAssembler::Unsigned);
444 }
446 void TemplateTable::iload() {
447 transition(vtos, itos);
448 // Rewrite iload,iload pair into fast_iload2
449 // iload,caload pair into fast_icaload
450 if (RewriteFrequentPairs) {
451 Label rewrite, done;
453 // get next byte
454 __ ldub(at_bcp(Bytecodes::length_for(Bytecodes::_iload)), G3_scratch);
456 // if _iload, wait to rewrite to iload2. We only want to rewrite the
457 // last two iloads in a pair. Comparing against fast_iload means that
458 // the next bytecode is neither an iload or a caload, and therefore
459 // an iload pair.
460 __ cmp_and_br_short(G3_scratch, (int)Bytecodes::_iload, Assembler::equal, Assembler::pn, done);
462 __ cmp(G3_scratch, (int)Bytecodes::_fast_iload);
463 __ br(Assembler::equal, false, Assembler::pn, rewrite);
464 __ delayed()->set(Bytecodes::_fast_iload2, G4_scratch);
466 __ cmp(G3_scratch, (int)Bytecodes::_caload);
467 __ br(Assembler::equal, false, Assembler::pn, rewrite);
468 __ delayed()->set(Bytecodes::_fast_icaload, G4_scratch);
470 __ set(Bytecodes::_fast_iload, G4_scratch); // don't check again
471 // rewrite
472 // G4_scratch: fast bytecode
473 __ bind(rewrite);
474 patch_bytecode(Bytecodes::_iload, G4_scratch, G3_scratch, false);
475 __ bind(done);
476 }
478 // Get the local value into tos
479 locals_index(G3_scratch);
480 __ access_local_int( G3_scratch, Otos_i );
481 }
483 void TemplateTable::fast_iload2() {
484 transition(vtos, itos);
485 locals_index(G3_scratch);
486 __ access_local_int( G3_scratch, Otos_i );
487 __ push_i();
488 locals_index(G3_scratch, 3); // get next bytecode's local index.
489 __ access_local_int( G3_scratch, Otos_i );
490 }
492 void TemplateTable::fast_iload() {
493 transition(vtos, itos);
494 locals_index(G3_scratch);
495 __ access_local_int( G3_scratch, Otos_i );
496 }
498 void TemplateTable::lload() {
499 transition(vtos, ltos);
500 locals_index(G3_scratch);
501 __ access_local_long( G3_scratch, Otos_l );
502 }
505 void TemplateTable::fload() {
506 transition(vtos, ftos);
507 locals_index(G3_scratch);
508 __ access_local_float( G3_scratch, Ftos_f );
509 }
512 void TemplateTable::dload() {
513 transition(vtos, dtos);
514 locals_index(G3_scratch);
515 __ access_local_double( G3_scratch, Ftos_d );
516 }
519 void TemplateTable::aload() {
520 transition(vtos, atos);
521 locals_index(G3_scratch);
522 __ access_local_ptr( G3_scratch, Otos_i);
523 }
526 void TemplateTable::wide_iload() {
527 transition(vtos, itos);
528 locals_index_wide(G3_scratch);
529 __ access_local_int( G3_scratch, Otos_i );
530 }
533 void TemplateTable::wide_lload() {
534 transition(vtos, ltos);
535 locals_index_wide(G3_scratch);
536 __ access_local_long( G3_scratch, Otos_l );
537 }
540 void TemplateTable::wide_fload() {
541 transition(vtos, ftos);
542 locals_index_wide(G3_scratch);
543 __ access_local_float( G3_scratch, Ftos_f );
544 }
547 void TemplateTable::wide_dload() {
548 transition(vtos, dtos);
549 locals_index_wide(G3_scratch);
550 __ access_local_double( G3_scratch, Ftos_d );
551 }
554 void TemplateTable::wide_aload() {
555 transition(vtos, atos);
556 locals_index_wide(G3_scratch);
557 __ access_local_ptr( G3_scratch, Otos_i );
558 __ verify_oop(Otos_i);
559 }
562 void TemplateTable::iaload() {
563 transition(itos, itos);
564 // Otos_i: index
565 // tos: array
566 __ index_check(O2, Otos_i, LogBytesPerInt, G3_scratch, O3);
567 __ ld(O3, arrayOopDesc::base_offset_in_bytes(T_INT), Otos_i);
568 }
571 void TemplateTable::laload() {
572 transition(itos, ltos);
573 // Otos_i: index
574 // O2: array
575 __ index_check(O2, Otos_i, LogBytesPerLong, G3_scratch, O3);
576 __ ld_long(O3, arrayOopDesc::base_offset_in_bytes(T_LONG), Otos_l);
577 }
580 void TemplateTable::faload() {
581 transition(itos, ftos);
582 // Otos_i: index
583 // O2: array
584 __ index_check(O2, Otos_i, LogBytesPerInt, G3_scratch, O3);
585 __ ldf(FloatRegisterImpl::S, O3, arrayOopDesc::base_offset_in_bytes(T_FLOAT), Ftos_f);
586 }
589 void TemplateTable::daload() {
590 transition(itos, dtos);
591 // Otos_i: index
592 // O2: array
593 __ index_check(O2, Otos_i, LogBytesPerLong, G3_scratch, O3);
594 __ ldf(FloatRegisterImpl::D, O3, arrayOopDesc::base_offset_in_bytes(T_DOUBLE), Ftos_d);
595 }
598 void TemplateTable::aaload() {
599 transition(itos, atos);
600 // Otos_i: index
601 // tos: array
602 __ index_check(O2, Otos_i, UseCompressedOops ? 2 : LogBytesPerWord, G3_scratch, O3);
603 __ load_heap_oop(O3, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i);
604 __ verify_oop(Otos_i);
605 }
608 void TemplateTable::baload() {
609 transition(itos, itos);
610 // Otos_i: index
611 // tos: array
612 __ index_check(O2, Otos_i, 0, G3_scratch, O3);
613 __ ldsb(O3, arrayOopDesc::base_offset_in_bytes(T_BYTE), Otos_i);
614 }
617 void TemplateTable::caload() {
618 transition(itos, itos);
619 // Otos_i: index
620 // tos: array
621 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
622 __ lduh(O3, arrayOopDesc::base_offset_in_bytes(T_CHAR), Otos_i);
623 }
625 void TemplateTable::fast_icaload() {
626 transition(vtos, itos);
627 // Otos_i: index
628 // tos: array
629 locals_index(G3_scratch);
630 __ access_local_int( G3_scratch, Otos_i );
631 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
632 __ lduh(O3, arrayOopDesc::base_offset_in_bytes(T_CHAR), Otos_i);
633 }
636 void TemplateTable::saload() {
637 transition(itos, itos);
638 // Otos_i: index
639 // tos: array
640 __ index_check(O2, Otos_i, LogBytesPerShort, G3_scratch, O3);
641 __ ldsh(O3, arrayOopDesc::base_offset_in_bytes(T_SHORT), Otos_i);
642 }
645 void TemplateTable::iload(int n) {
646 transition(vtos, itos);
647 __ ld( Llocals, Interpreter::local_offset_in_bytes(n), Otos_i );
648 }
651 void TemplateTable::lload(int n) {
652 transition(vtos, ltos);
653 assert(n+1 < Argument::n_register_parameters, "would need more code");
654 __ load_unaligned_long(Llocals, Interpreter::local_offset_in_bytes(n+1), Otos_l);
655 }
658 void TemplateTable::fload(int n) {
659 transition(vtos, ftos);
660 assert(n < Argument::n_register_parameters, "would need more code");
661 __ ldf( FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(n), Ftos_f );
662 }
665 void TemplateTable::dload(int n) {
666 transition(vtos, dtos);
667 FloatRegister dst = Ftos_d;
668 __ load_unaligned_double(Llocals, Interpreter::local_offset_in_bytes(n+1), dst);
669 }
672 void TemplateTable::aload(int n) {
673 transition(vtos, atos);
674 __ ld_ptr( Llocals, Interpreter::local_offset_in_bytes(n), Otos_i );
675 }
678 void TemplateTable::aload_0() {
679 transition(vtos, atos);
681 // According to bytecode histograms, the pairs:
682 //
683 // _aload_0, _fast_igetfield (itos)
684 // _aload_0, _fast_agetfield (atos)
685 // _aload_0, _fast_fgetfield (ftos)
686 //
687 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0
688 // bytecode checks the next bytecode and then rewrites the current
689 // bytecode into a pair bytecode; otherwise it rewrites the current
690 // bytecode into _fast_aload_0 that doesn't do the pair check anymore.
691 //
692 if (RewriteFrequentPairs) {
693 Label rewrite, done;
695 // get next byte
696 __ ldub(at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)), G3_scratch);
698 // do actual aload_0
699 aload(0);
701 // if _getfield then wait with rewrite
702 __ cmp_and_br_short(G3_scratch, (int)Bytecodes::_getfield, Assembler::equal, Assembler::pn, done);
704 // if _igetfield then rewrite to _fast_iaccess_0
705 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
706 __ cmp(G3_scratch, (int)Bytecodes::_fast_igetfield);
707 __ br(Assembler::equal, false, Assembler::pn, rewrite);
708 __ delayed()->set(Bytecodes::_fast_iaccess_0, G4_scratch);
710 // if _agetfield then rewrite to _fast_aaccess_0
711 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
712 __ cmp(G3_scratch, (int)Bytecodes::_fast_agetfield);
713 __ br(Assembler::equal, false, Assembler::pn, rewrite);
714 __ delayed()->set(Bytecodes::_fast_aaccess_0, G4_scratch);
716 // if _fgetfield then rewrite to _fast_faccess_0
717 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
718 __ cmp(G3_scratch, (int)Bytecodes::_fast_fgetfield);
719 __ br(Assembler::equal, false, Assembler::pn, rewrite);
720 __ delayed()->set(Bytecodes::_fast_faccess_0, G4_scratch);
722 // else rewrite to _fast_aload0
723 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "adjust fast bytecode def");
724 __ set(Bytecodes::_fast_aload_0, G4_scratch);
726 // rewrite
727 // G4_scratch: fast bytecode
728 __ bind(rewrite);
729 patch_bytecode(Bytecodes::_aload_0, G4_scratch, G3_scratch, false);
730 __ bind(done);
731 } else {
732 aload(0);
733 }
734 }
737 void TemplateTable::istore() {
738 transition(itos, vtos);
739 locals_index(G3_scratch);
740 __ store_local_int( G3_scratch, Otos_i );
741 }
744 void TemplateTable::lstore() {
745 transition(ltos, vtos);
746 locals_index(G3_scratch);
747 __ store_local_long( G3_scratch, Otos_l );
748 }
751 void TemplateTable::fstore() {
752 transition(ftos, vtos);
753 locals_index(G3_scratch);
754 __ store_local_float( G3_scratch, Ftos_f );
755 }
758 void TemplateTable::dstore() {
759 transition(dtos, vtos);
760 locals_index(G3_scratch);
761 __ store_local_double( G3_scratch, Ftos_d );
762 }
765 void TemplateTable::astore() {
766 transition(vtos, vtos);
767 __ load_ptr(0, Otos_i);
768 __ inc(Lesp, Interpreter::stackElementSize);
769 __ verify_oop_or_return_address(Otos_i, G3_scratch);
770 locals_index(G3_scratch);
771 __ store_local_ptr(G3_scratch, Otos_i);
772 }
775 void TemplateTable::wide_istore() {
776 transition(vtos, vtos);
777 __ pop_i();
778 locals_index_wide(G3_scratch);
779 __ store_local_int( G3_scratch, Otos_i );
780 }
783 void TemplateTable::wide_lstore() {
784 transition(vtos, vtos);
785 __ pop_l();
786 locals_index_wide(G3_scratch);
787 __ store_local_long( G3_scratch, Otos_l );
788 }
791 void TemplateTable::wide_fstore() {
792 transition(vtos, vtos);
793 __ pop_f();
794 locals_index_wide(G3_scratch);
795 __ store_local_float( G3_scratch, Ftos_f );
796 }
799 void TemplateTable::wide_dstore() {
800 transition(vtos, vtos);
801 __ pop_d();
802 locals_index_wide(G3_scratch);
803 __ store_local_double( G3_scratch, Ftos_d );
804 }
807 void TemplateTable::wide_astore() {
808 transition(vtos, vtos);
809 __ load_ptr(0, Otos_i);
810 __ inc(Lesp, Interpreter::stackElementSize);
811 __ verify_oop_or_return_address(Otos_i, G3_scratch);
812 locals_index_wide(G3_scratch);
813 __ store_local_ptr(G3_scratch, Otos_i);
814 }
817 void TemplateTable::iastore() {
818 transition(itos, vtos);
819 __ pop_i(O2); // index
820 // Otos_i: val
821 // O3: array
822 __ index_check(O3, O2, LogBytesPerInt, G3_scratch, O2);
823 __ st(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_INT));
824 }
827 void TemplateTable::lastore() {
828 transition(ltos, vtos);
829 __ pop_i(O2); // index
830 // Otos_l: val
831 // O3: array
832 __ index_check(O3, O2, LogBytesPerLong, G3_scratch, O2);
833 __ st_long(Otos_l, O2, arrayOopDesc::base_offset_in_bytes(T_LONG));
834 }
837 void TemplateTable::fastore() {
838 transition(ftos, vtos);
839 __ pop_i(O2); // index
840 // Ftos_f: val
841 // O3: array
842 __ index_check(O3, O2, LogBytesPerInt, G3_scratch, O2);
843 __ stf(FloatRegisterImpl::S, Ftos_f, O2, arrayOopDesc::base_offset_in_bytes(T_FLOAT));
844 }
847 void TemplateTable::dastore() {
848 transition(dtos, vtos);
849 __ pop_i(O2); // index
850 // Fos_d: val
851 // O3: array
852 __ index_check(O3, O2, LogBytesPerLong, G3_scratch, O2);
853 __ stf(FloatRegisterImpl::D, Ftos_d, O2, arrayOopDesc::base_offset_in_bytes(T_DOUBLE));
854 }
857 void TemplateTable::aastore() {
858 Label store_ok, is_null, done;
859 transition(vtos, vtos);
860 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
861 __ ld(Lesp, Interpreter::expr_offset_in_bytes(1), O2); // get index
862 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(2), O3); // get array
863 // Otos_i: val
864 // O2: index
865 // O3: array
866 __ verify_oop(Otos_i);
867 __ index_check_without_pop(O3, O2, UseCompressedOops ? 2 : LogBytesPerWord, G3_scratch, O1);
869 // do array store check - check for NULL value first
870 __ br_null_short( Otos_i, Assembler::pn, is_null );
872 __ load_klass(O3, O4); // get array klass
873 __ load_klass(Otos_i, O5); // get value klass
875 // do fast instanceof cache test
877 __ ld_ptr(O4, in_bytes(ObjArrayKlass::element_klass_offset()), O4);
879 assert(Otos_i == O0, "just checking");
881 // Otos_i: value
882 // O1: addr - offset
883 // O2: index
884 // O3: array
885 // O4: array element klass
886 // O5: value klass
888 // Address element(O1, 0, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
890 // Generate a fast subtype check. Branch to store_ok if no
891 // failure. Throw if failure.
892 __ gen_subtype_check( O5, O4, G3_scratch, G4_scratch, G1_scratch, store_ok );
894 // Not a subtype; so must throw exception
895 __ throw_if_not_x( Assembler::never, Interpreter::_throw_ArrayStoreException_entry, G3_scratch );
897 // Store is OK.
898 __ bind(store_ok);
899 do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i, G3_scratch, _bs->kind(), true);
901 __ ba(done);
902 __ delayed()->inc(Lesp, 3* Interpreter::stackElementSize); // adj sp (pops array, index and value)
904 __ bind(is_null);
905 do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), G0, G4_scratch, _bs->kind(), true);
907 __ profile_null_seen(G3_scratch);
908 __ inc(Lesp, 3* Interpreter::stackElementSize); // adj sp (pops array, index and value)
909 __ bind(done);
910 }
913 void TemplateTable::bastore() {
914 transition(itos, vtos);
915 __ pop_i(O2); // index
916 // Otos_i: val
917 // O2: index
918 // O3: array
919 __ index_check(O3, O2, 0, G3_scratch, O2);
920 // Need to check whether array is boolean or byte
921 // since both types share the bastore bytecode.
922 __ load_klass(O3, G4_scratch);
923 __ ld(G4_scratch, in_bytes(Klass::layout_helper_offset()), G4_scratch);
924 __ set(Klass::layout_helper_boolean_diffbit(), G3_scratch);
925 __ andcc(G3_scratch, G4_scratch, G0);
926 Label L_skip;
927 __ br(Assembler::zero, false, Assembler::pn, L_skip);
928 __ delayed()->nop();
929 __ and3(Otos_i, 1, Otos_i); // if it is a T_BOOLEAN array, mask the stored value to 0/1
930 __ bind(L_skip);
931 __ stb(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_BYTE));
932 }
935 void TemplateTable::castore() {
936 transition(itos, vtos);
937 __ pop_i(O2); // index
938 // Otos_i: val
939 // O3: array
940 __ index_check(O3, O2, LogBytesPerShort, G3_scratch, O2);
941 __ sth(Otos_i, O2, arrayOopDesc::base_offset_in_bytes(T_CHAR));
942 }
945 void TemplateTable::sastore() {
946 // %%%%% Factor across platform
947 castore();
948 }
951 void TemplateTable::istore(int n) {
952 transition(itos, vtos);
953 __ st(Otos_i, Llocals, Interpreter::local_offset_in_bytes(n));
954 }
957 void TemplateTable::lstore(int n) {
958 transition(ltos, vtos);
959 assert(n+1 < Argument::n_register_parameters, "only handle register cases");
960 __ store_unaligned_long(Otos_l, Llocals, Interpreter::local_offset_in_bytes(n+1));
962 }
965 void TemplateTable::fstore(int n) {
966 transition(ftos, vtos);
967 assert(n < Argument::n_register_parameters, "only handle register cases");
968 __ stf(FloatRegisterImpl::S, Ftos_f, Llocals, Interpreter::local_offset_in_bytes(n));
969 }
972 void TemplateTable::dstore(int n) {
973 transition(dtos, vtos);
974 FloatRegister src = Ftos_d;
975 __ store_unaligned_double(src, Llocals, Interpreter::local_offset_in_bytes(n+1));
976 }
979 void TemplateTable::astore(int n) {
980 transition(vtos, vtos);
981 __ load_ptr(0, Otos_i);
982 __ inc(Lesp, Interpreter::stackElementSize);
983 __ verify_oop_or_return_address(Otos_i, G3_scratch);
984 __ store_local_ptr(n, Otos_i);
985 }
988 void TemplateTable::pop() {
989 transition(vtos, vtos);
990 __ inc(Lesp, Interpreter::stackElementSize);
991 }
994 void TemplateTable::pop2() {
995 transition(vtos, vtos);
996 __ inc(Lesp, 2 * Interpreter::stackElementSize);
997 }
1000 void TemplateTable::dup() {
1001 transition(vtos, vtos);
1002 // stack: ..., a
1003 // load a and tag
1004 __ load_ptr(0, Otos_i);
1005 __ push_ptr(Otos_i);
1006 // stack: ..., a, a
1007 }
1010 void TemplateTable::dup_x1() {
1011 transition(vtos, vtos);
1012 // stack: ..., a, b
1013 __ load_ptr( 1, G3_scratch); // get a
1014 __ load_ptr( 0, Otos_l1); // get b
1015 __ store_ptr(1, Otos_l1); // put b
1016 __ store_ptr(0, G3_scratch); // put a - like swap
1017 __ push_ptr(Otos_l1); // push b
1018 // stack: ..., b, a, b
1019 }
1022 void TemplateTable::dup_x2() {
1023 transition(vtos, vtos);
1024 // stack: ..., a, b, c
1025 // get c and push on stack, reuse registers
1026 __ load_ptr( 0, G3_scratch); // get c
1027 __ push_ptr(G3_scratch); // push c with tag
1028 // stack: ..., a, b, c, c (c in reg) (Lesp - 4)
1029 // (stack offsets n+1 now)
1030 __ load_ptr( 3, Otos_l1); // get a
1031 __ store_ptr(3, G3_scratch); // put c at 3
1032 // stack: ..., c, b, c, c (a in reg)
1033 __ load_ptr( 2, G3_scratch); // get b
1034 __ store_ptr(2, Otos_l1); // put a at 2
1035 // stack: ..., c, a, c, c (b in reg)
1036 __ store_ptr(1, G3_scratch); // put b at 1
1037 // stack: ..., c, a, b, c
1038 }
1041 void TemplateTable::dup2() {
1042 transition(vtos, vtos);
1043 __ load_ptr(1, G3_scratch); // get a
1044 __ load_ptr(0, Otos_l1); // get b
1045 __ push_ptr(G3_scratch); // push a
1046 __ push_ptr(Otos_l1); // push b
1047 // stack: ..., a, b, a, b
1048 }
1051 void TemplateTable::dup2_x1() {
1052 transition(vtos, vtos);
1053 // stack: ..., a, b, c
1054 __ load_ptr( 1, Lscratch); // get b
1055 __ load_ptr( 2, Otos_l1); // get a
1056 __ store_ptr(2, Lscratch); // put b at a
1057 // stack: ..., b, b, c
1058 __ load_ptr( 0, G3_scratch); // get c
1059 __ store_ptr(1, G3_scratch); // put c at b
1060 // stack: ..., b, c, c
1061 __ store_ptr(0, Otos_l1); // put a at c
1062 // stack: ..., b, c, a
1063 __ push_ptr(Lscratch); // push b
1064 __ push_ptr(G3_scratch); // push c
1065 // stack: ..., b, c, a, b, c
1066 }
1069 // The spec says that these types can be a mixture of category 1 (1 word)
1070 // types and/or category 2 types (long and doubles)
1071 void TemplateTable::dup2_x2() {
1072 transition(vtos, vtos);
1073 // stack: ..., a, b, c, d
1074 __ load_ptr( 1, Lscratch); // get c
1075 __ load_ptr( 3, Otos_l1); // get a
1076 __ store_ptr(3, Lscratch); // put c at 3
1077 __ store_ptr(1, Otos_l1); // put a at 1
1078 // stack: ..., c, b, a, d
1079 __ load_ptr( 2, G3_scratch); // get b
1080 __ load_ptr( 0, Otos_l1); // get d
1081 __ store_ptr(0, G3_scratch); // put b at 0
1082 __ store_ptr(2, Otos_l1); // put d at 2
1083 // stack: ..., c, d, a, b
1084 __ push_ptr(Lscratch); // push c
1085 __ push_ptr(Otos_l1); // push d
1086 // stack: ..., c, d, a, b, c, d
1087 }
1090 void TemplateTable::swap() {
1091 transition(vtos, vtos);
1092 // stack: ..., a, b
1093 __ load_ptr( 1, G3_scratch); // get a
1094 __ load_ptr( 0, Otos_l1); // get b
1095 __ store_ptr(0, G3_scratch); // put b
1096 __ store_ptr(1, Otos_l1); // put a
1097 // stack: ..., b, a
1098 }
1101 void TemplateTable::iop2(Operation op) {
1102 transition(itos, itos);
1103 __ pop_i(O1);
1104 switch (op) {
1105 case add: __ add(O1, Otos_i, Otos_i); break;
1106 case sub: __ sub(O1, Otos_i, Otos_i); break;
1107 // %%%%% Mul may not exist: better to call .mul?
1108 case mul: __ smul(O1, Otos_i, Otos_i); break;
1109 case _and: __ and3(O1, Otos_i, Otos_i); break;
1110 case _or: __ or3(O1, Otos_i, Otos_i); break;
1111 case _xor: __ xor3(O1, Otos_i, Otos_i); break;
1112 case shl: __ sll(O1, Otos_i, Otos_i); break;
1113 case shr: __ sra(O1, Otos_i, Otos_i); break;
1114 case ushr: __ srl(O1, Otos_i, Otos_i); break;
1115 default: ShouldNotReachHere();
1116 }
1117 }
1120 void TemplateTable::lop2(Operation op) {
1121 transition(ltos, ltos);
1122 __ pop_l(O2);
1123 switch (op) {
1124 #ifdef _LP64
1125 case add: __ add(O2, Otos_l, Otos_l); break;
1126 case sub: __ sub(O2, Otos_l, Otos_l); break;
1127 case _and: __ and3(O2, Otos_l, Otos_l); break;
1128 case _or: __ or3(O2, Otos_l, Otos_l); break;
1129 case _xor: __ xor3(O2, Otos_l, Otos_l); break;
1130 #else
1131 case add: __ addcc(O3, Otos_l2, Otos_l2); __ addc(O2, Otos_l1, Otos_l1); break;
1132 case sub: __ subcc(O3, Otos_l2, Otos_l2); __ subc(O2, Otos_l1, Otos_l1); break;
1133 case _and: __ and3(O3, Otos_l2, Otos_l2); __ and3(O2, Otos_l1, Otos_l1); break;
1134 case _or: __ or3(O3, Otos_l2, Otos_l2); __ or3(O2, Otos_l1, Otos_l1); break;
1135 case _xor: __ xor3(O3, Otos_l2, Otos_l2); __ xor3(O2, Otos_l1, Otos_l1); break;
1136 #endif
1137 default: ShouldNotReachHere();
1138 }
1139 }
1142 void TemplateTable::idiv() {
1143 // %%%%% Later: ForSPARC/V7 call .sdiv library routine,
1144 // %%%%% Use ldsw...sdivx on pure V9 ABI. 64 bit safe.
1146 transition(itos, itos);
1147 __ pop_i(O1); // get 1st op
1149 // Y contains upper 32 bits of result, set it to 0 or all ones
1150 __ wry(G0);
1151 __ mov(~0, G3_scratch);
1153 __ tst(O1);
1154 Label neg;
1155 __ br(Assembler::negative, true, Assembler::pn, neg);
1156 __ delayed()->wry(G3_scratch);
1157 __ bind(neg);
1159 Label ok;
1160 __ tst(Otos_i);
1161 __ throw_if_not_icc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch );
1163 const int min_int = 0x80000000;
1164 Label regular;
1165 __ cmp(Otos_i, -1);
1166 __ br(Assembler::notEqual, false, Assembler::pt, regular);
1167 #ifdef _LP64
1168 // Don't put set in delay slot
1169 // Set will turn into multiple instructions in 64 bit mode
1170 __ delayed()->nop();
1171 __ set(min_int, G4_scratch);
1172 #else
1173 __ delayed()->set(min_int, G4_scratch);
1174 #endif
1175 Label done;
1176 __ cmp(O1, G4_scratch);
1177 __ br(Assembler::equal, true, Assembler::pt, done);
1178 __ delayed()->mov(O1, Otos_i); // (mov only executed if branch taken)
1180 __ bind(regular);
1181 __ sdiv(O1, Otos_i, Otos_i); // note: irem uses O1 after this instruction!
1182 __ bind(done);
1183 }
1186 void TemplateTable::irem() {
1187 transition(itos, itos);
1188 __ mov(Otos_i, O2); // save divisor
1189 idiv(); // %%%% Hack: exploits fact that idiv leaves dividend in O1
1190 __ smul(Otos_i, O2, Otos_i);
1191 __ sub(O1, Otos_i, Otos_i);
1192 }
1195 void TemplateTable::lmul() {
1196 transition(ltos, ltos);
1197 __ pop_l(O2);
1198 #ifdef _LP64
1199 __ mulx(Otos_l, O2, Otos_l);
1200 #else
1201 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::lmul));
1202 #endif
1204 }
1207 void TemplateTable::ldiv() {
1208 transition(ltos, ltos);
1210 // check for zero
1211 __ pop_l(O2);
1212 #ifdef _LP64
1213 __ tst(Otos_l);
1214 __ throw_if_not_xcc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1215 __ sdivx(O2, Otos_l, Otos_l);
1216 #else
1217 __ orcc(Otos_l1, Otos_l2, G0);
1218 __ throw_if_not_icc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1219 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::ldiv));
1220 #endif
1221 }
1224 void TemplateTable::lrem() {
1225 transition(ltos, ltos);
1227 // check for zero
1228 __ pop_l(O2);
1229 #ifdef _LP64
1230 __ tst(Otos_l);
1231 __ throw_if_not_xcc( Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1232 __ sdivx(O2, Otos_l, Otos_l2);
1233 __ mulx (Otos_l2, Otos_l, Otos_l2);
1234 __ sub (O2, Otos_l2, Otos_l);
1235 #else
1236 __ orcc(Otos_l1, Otos_l2, G0);
1237 __ throw_if_not_icc(Assembler::notZero, Interpreter::_throw_ArithmeticException_entry, G3_scratch);
1238 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::lrem));
1239 #endif
1240 }
1243 void TemplateTable::lshl() {
1244 transition(itos, ltos); // %%%% could optimize, fill delay slot or opt for ultra
1246 __ pop_l(O2); // shift value in O2, O3
1247 #ifdef _LP64
1248 __ sllx(O2, Otos_i, Otos_l);
1249 #else
1250 __ lshl(O2, O3, Otos_i, Otos_l1, Otos_l2, O4);
1251 #endif
1252 }
1255 void TemplateTable::lshr() {
1256 transition(itos, ltos); // %%%% see lshl comment
1258 __ pop_l(O2); // shift value in O2, O3
1259 #ifdef _LP64
1260 __ srax(O2, Otos_i, Otos_l);
1261 #else
1262 __ lshr(O2, O3, Otos_i, Otos_l1, Otos_l2, O4);
1263 #endif
1264 }
1268 void TemplateTable::lushr() {
1269 transition(itos, ltos); // %%%% see lshl comment
1271 __ pop_l(O2); // shift value in O2, O3
1272 #ifdef _LP64
1273 __ srlx(O2, Otos_i, Otos_l);
1274 #else
1275 __ lushr(O2, O3, Otos_i, Otos_l1, Otos_l2, O4);
1276 #endif
1277 }
1280 void TemplateTable::fop2(Operation op) {
1281 transition(ftos, ftos);
1282 switch (op) {
1283 case add: __ pop_f(F4); __ fadd(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1284 case sub: __ pop_f(F4); __ fsub(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1285 case mul: __ pop_f(F4); __ fmul(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1286 case div: __ pop_f(F4); __ fdiv(FloatRegisterImpl::S, F4, Ftos_f, Ftos_f); break;
1287 case rem:
1288 assert(Ftos_f == F0, "just checking");
1289 #ifdef _LP64
1290 // LP64 calling conventions use F1, F3 for passing 2 floats
1291 __ pop_f(F1);
1292 __ fmov(FloatRegisterImpl::S, Ftos_f, F3);
1293 #else
1294 __ pop_i(O0);
1295 __ stf(FloatRegisterImpl::S, Ftos_f, __ d_tmp);
1296 __ ld( __ d_tmp, O1 );
1297 #endif
1298 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::frem));
1299 assert( Ftos_f == F0, "fix this code" );
1300 break;
1302 default: ShouldNotReachHere();
1303 }
1304 }
1307 void TemplateTable::dop2(Operation op) {
1308 transition(dtos, dtos);
1309 switch (op) {
1310 case add: __ pop_d(F4); __ fadd(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1311 case sub: __ pop_d(F4); __ fsub(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1312 case mul: __ pop_d(F4); __ fmul(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1313 case div: __ pop_d(F4); __ fdiv(FloatRegisterImpl::D, F4, Ftos_d, Ftos_d); break;
1314 case rem:
1315 #ifdef _LP64
1316 // Pass arguments in D0, D2
1317 __ fmov(FloatRegisterImpl::D, Ftos_f, F2 );
1318 __ pop_d( F0 );
1319 #else
1320 // Pass arguments in O0O1, O2O3
1321 __ stf(FloatRegisterImpl::D, Ftos_f, __ d_tmp);
1322 __ ldd( __ d_tmp, O2 );
1323 __ pop_d(Ftos_f);
1324 __ stf(FloatRegisterImpl::D, Ftos_f, __ d_tmp);
1325 __ ldd( __ d_tmp, O0 );
1326 #endif
1327 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::drem));
1328 assert( Ftos_d == F0, "fix this code" );
1329 break;
1331 default: ShouldNotReachHere();
1332 }
1333 }
1336 void TemplateTable::ineg() {
1337 transition(itos, itos);
1338 __ neg(Otos_i);
1339 }
1342 void TemplateTable::lneg() {
1343 transition(ltos, ltos);
1344 #ifdef _LP64
1345 __ sub(G0, Otos_l, Otos_l);
1346 #else
1347 __ lneg(Otos_l1, Otos_l2);
1348 #endif
1349 }
1352 void TemplateTable::fneg() {
1353 transition(ftos, ftos);
1354 __ fneg(FloatRegisterImpl::S, Ftos_f, Ftos_f);
1355 }
1358 void TemplateTable::dneg() {
1359 transition(dtos, dtos);
1360 __ fneg(FloatRegisterImpl::D, Ftos_f, Ftos_f);
1361 }
1364 void TemplateTable::iinc() {
1365 transition(vtos, vtos);
1366 locals_index(G3_scratch);
1367 __ ldsb(Lbcp, 2, O2); // load constant
1368 __ access_local_int(G3_scratch, Otos_i);
1369 __ add(Otos_i, O2, Otos_i);
1370 __ st(Otos_i, G3_scratch, 0); // access_local_int puts E.A. in G3_scratch
1371 }
1374 void TemplateTable::wide_iinc() {
1375 transition(vtos, vtos);
1376 locals_index_wide(G3_scratch);
1377 __ get_2_byte_integer_at_bcp( 4, O2, O3, InterpreterMacroAssembler::Signed);
1378 __ access_local_int(G3_scratch, Otos_i);
1379 __ add(Otos_i, O3, Otos_i);
1380 __ st(Otos_i, G3_scratch, 0); // access_local_int puts E.A. in G3_scratch
1381 }
1384 void TemplateTable::convert() {
1385 // %%%%% Factor this first part accross platforms
1386 #ifdef ASSERT
1387 TosState tos_in = ilgl;
1388 TosState tos_out = ilgl;
1389 switch (bytecode()) {
1390 case Bytecodes::_i2l: // fall through
1391 case Bytecodes::_i2f: // fall through
1392 case Bytecodes::_i2d: // fall through
1393 case Bytecodes::_i2b: // fall through
1394 case Bytecodes::_i2c: // fall through
1395 case Bytecodes::_i2s: tos_in = itos; break;
1396 case Bytecodes::_l2i: // fall through
1397 case Bytecodes::_l2f: // fall through
1398 case Bytecodes::_l2d: tos_in = ltos; break;
1399 case Bytecodes::_f2i: // fall through
1400 case Bytecodes::_f2l: // fall through
1401 case Bytecodes::_f2d: tos_in = ftos; break;
1402 case Bytecodes::_d2i: // fall through
1403 case Bytecodes::_d2l: // fall through
1404 case Bytecodes::_d2f: tos_in = dtos; break;
1405 default : ShouldNotReachHere();
1406 }
1407 switch (bytecode()) {
1408 case Bytecodes::_l2i: // fall through
1409 case Bytecodes::_f2i: // fall through
1410 case Bytecodes::_d2i: // fall through
1411 case Bytecodes::_i2b: // fall through
1412 case Bytecodes::_i2c: // fall through
1413 case Bytecodes::_i2s: tos_out = itos; break;
1414 case Bytecodes::_i2l: // fall through
1415 case Bytecodes::_f2l: // fall through
1416 case Bytecodes::_d2l: tos_out = ltos; break;
1417 case Bytecodes::_i2f: // fall through
1418 case Bytecodes::_l2f: // fall through
1419 case Bytecodes::_d2f: tos_out = ftos; break;
1420 case Bytecodes::_i2d: // fall through
1421 case Bytecodes::_l2d: // fall through
1422 case Bytecodes::_f2d: tos_out = dtos; break;
1423 default : ShouldNotReachHere();
1424 }
1425 transition(tos_in, tos_out);
1426 #endif
1429 // Conversion
1430 Label done;
1431 switch (bytecode()) {
1432 case Bytecodes::_i2l:
1433 #ifdef _LP64
1434 // Sign extend the 32 bits
1435 __ sra ( Otos_i, 0, Otos_l );
1436 #else
1437 __ addcc(Otos_i, 0, Otos_l2);
1438 __ br(Assembler::greaterEqual, true, Assembler::pt, done);
1439 __ delayed()->clr(Otos_l1);
1440 __ set(~0, Otos_l1);
1441 #endif
1442 break;
1444 case Bytecodes::_i2f:
1445 __ st(Otos_i, __ d_tmp );
1446 __ ldf(FloatRegisterImpl::S, __ d_tmp, F0);
1447 __ fitof(FloatRegisterImpl::S, F0, Ftos_f);
1448 break;
1450 case Bytecodes::_i2d:
1451 __ st(Otos_i, __ d_tmp);
1452 __ ldf(FloatRegisterImpl::S, __ d_tmp, F0);
1453 __ fitof(FloatRegisterImpl::D, F0, Ftos_f);
1454 break;
1456 case Bytecodes::_i2b:
1457 __ sll(Otos_i, 24, Otos_i);
1458 __ sra(Otos_i, 24, Otos_i);
1459 break;
1461 case Bytecodes::_i2c:
1462 __ sll(Otos_i, 16, Otos_i);
1463 __ srl(Otos_i, 16, Otos_i);
1464 break;
1466 case Bytecodes::_i2s:
1467 __ sll(Otos_i, 16, Otos_i);
1468 __ sra(Otos_i, 16, Otos_i);
1469 break;
1471 case Bytecodes::_l2i:
1472 #ifndef _LP64
1473 __ mov(Otos_l2, Otos_i);
1474 #else
1475 // Sign-extend into the high 32 bits
1476 __ sra(Otos_l, 0, Otos_i);
1477 #endif
1478 break;
1480 case Bytecodes::_l2f:
1481 case Bytecodes::_l2d:
1482 __ st_long(Otos_l, __ d_tmp);
1483 __ ldf(FloatRegisterImpl::D, __ d_tmp, Ftos_d);
1485 if (bytecode() == Bytecodes::_l2f) {
1486 __ fxtof(FloatRegisterImpl::S, Ftos_d, Ftos_f);
1487 } else {
1488 __ fxtof(FloatRegisterImpl::D, Ftos_d, Ftos_d);
1489 }
1490 break;
1492 case Bytecodes::_f2i: {
1493 Label isNaN;
1494 // result must be 0 if value is NaN; test by comparing value to itself
1495 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, Ftos_f, Ftos_f);
1496 __ fb(Assembler::f_unordered, true, Assembler::pn, isNaN);
1497 __ delayed()->clr(Otos_i); // NaN
1498 __ ftoi(FloatRegisterImpl::S, Ftos_f, F30);
1499 __ stf(FloatRegisterImpl::S, F30, __ d_tmp);
1500 __ ld(__ d_tmp, Otos_i);
1501 __ bind(isNaN);
1502 }
1503 break;
1505 case Bytecodes::_f2l:
1506 // must uncache tos
1507 __ push_f();
1508 #ifdef _LP64
1509 __ pop_f(F1);
1510 #else
1511 __ pop_i(O0);
1512 #endif
1513 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, SharedRuntime::f2l));
1514 break;
1516 case Bytecodes::_f2d:
1517 __ ftof( FloatRegisterImpl::S, FloatRegisterImpl::D, Ftos_f, Ftos_f);
1518 break;
1520 case Bytecodes::_d2i:
1521 case Bytecodes::_d2l:
1522 // must uncache tos
1523 __ push_d();
1524 #ifdef _LP64
1525 // LP64 calling conventions pass first double arg in D0
1526 __ pop_d( Ftos_d );
1527 #else
1528 __ pop_i( O0 );
1529 __ pop_i( O1 );
1530 #endif
1531 __ call_VM_leaf(Lscratch,
1532 bytecode() == Bytecodes::_d2i
1533 ? CAST_FROM_FN_PTR(address, SharedRuntime::d2i)
1534 : CAST_FROM_FN_PTR(address, SharedRuntime::d2l));
1535 break;
1537 case Bytecodes::_d2f:
1538 __ ftof( FloatRegisterImpl::D, FloatRegisterImpl::S, Ftos_d, Ftos_f);
1539 break;
1541 default: ShouldNotReachHere();
1542 }
1543 __ bind(done);
1544 }
1547 void TemplateTable::lcmp() {
1548 transition(ltos, itos);
1550 #ifdef _LP64
1551 __ pop_l(O1); // pop off value 1, value 2 is in O0
1552 __ lcmp( O1, Otos_l, Otos_i );
1553 #else
1554 __ pop_l(O2); // cmp O2,3 to O0,1
1555 __ lcmp( O2, O3, Otos_l1, Otos_l2, Otos_i );
1556 #endif
1557 }
1560 void TemplateTable::float_cmp(bool is_float, int unordered_result) {
1562 if (is_float) __ pop_f(F2);
1563 else __ pop_d(F2);
1565 assert(Ftos_f == F0 && Ftos_d == F0, "alias checking:");
1567 __ float_cmp( is_float, unordered_result, F2, F0, Otos_i );
1568 }
1570 void TemplateTable::branch(bool is_jsr, bool is_wide) {
1571 // Note: on SPARC, we use InterpreterMacroAssembler::if_cmp also.
1572 __ verify_thread();
1574 const Register O2_bumped_count = O2;
1575 __ profile_taken_branch(G3_scratch, O2_bumped_count);
1577 // get (wide) offset to O1_disp
1578 const Register O1_disp = O1;
1579 if (is_wide) __ get_4_byte_integer_at_bcp( 1, G4_scratch, O1_disp, InterpreterMacroAssembler::set_CC);
1580 else __ get_2_byte_integer_at_bcp( 1, G4_scratch, O1_disp, InterpreterMacroAssembler::Signed, InterpreterMacroAssembler::set_CC);
1582 // Handle all the JSR stuff here, then exit.
1583 // It's much shorter and cleaner than intermingling with the
1584 // non-JSR normal-branch stuff occurring below.
1585 if( is_jsr ) {
1586 // compute return address as bci in Otos_i
1587 __ ld_ptr(Lmethod, Method::const_offset(), G3_scratch);
1588 __ sub(Lbcp, G3_scratch, G3_scratch);
1589 __ sub(G3_scratch, in_bytes(ConstMethod::codes_offset()) - (is_wide ? 5 : 3), Otos_i);
1591 // Bump Lbcp to target of JSR
1592 __ add(Lbcp, O1_disp, Lbcp);
1593 // Push returnAddress for "ret" on stack
1594 __ push_ptr(Otos_i);
1595 // And away we go!
1596 __ dispatch_next(vtos);
1597 return;
1598 }
1600 // Normal (non-jsr) branch handling
1602 // Save the current Lbcp
1603 const Register l_cur_bcp = Lscratch;
1604 __ mov( Lbcp, l_cur_bcp );
1606 bool increment_invocation_counter_for_backward_branches = UseCompiler && UseLoopCounter;
1607 if ( increment_invocation_counter_for_backward_branches ) {
1608 Label Lforward;
1609 // check branch direction
1610 __ br( Assembler::positive, false, Assembler::pn, Lforward );
1611 // Bump bytecode pointer by displacement (take the branch)
1612 __ delayed()->add( O1_disp, Lbcp, Lbcp ); // add to bc addr
1614 const Register Rcounters = G3_scratch;
1615 __ get_method_counters(Lmethod, Rcounters, Lforward);
1617 if (TieredCompilation) {
1618 Label Lno_mdo, Loverflow;
1619 int increment = InvocationCounter::count_increment;
1620 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift;
1621 if (ProfileInterpreter) {
1622 // If no method data exists, go to profile_continue.
1623 __ ld_ptr(Lmethod, Method::method_data_offset(), G4_scratch);
1624 __ br_null_short(G4_scratch, Assembler::pn, Lno_mdo);
1626 // Increment backedge counter in the MDO
1627 Address mdo_backedge_counter(G4_scratch, in_bytes(MethodData::backedge_counter_offset()) +
1628 in_bytes(InvocationCounter::counter_offset()));
1629 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, G3_scratch, O0,
1630 Assembler::notZero, &Lforward);
1631 __ ba_short(Loverflow);
1632 }
1634 // If there's no MDO, increment counter in MethodCounters*
1635 __ bind(Lno_mdo);
1636 Address backedge_counter(Rcounters,
1637 in_bytes(MethodCounters::backedge_counter_offset()) +
1638 in_bytes(InvocationCounter::counter_offset()));
1639 __ increment_mask_and_jump(backedge_counter, increment, mask, G4_scratch, O0,
1640 Assembler::notZero, &Lforward);
1641 __ bind(Loverflow);
1643 // notify point for loop, pass branch bytecode
1644 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), l_cur_bcp);
1646 // Was an OSR adapter generated?
1647 // O0 = osr nmethod
1648 __ br_null_short(O0, Assembler::pn, Lforward);
1650 // Has the nmethod been invalidated already?
1651 __ ld(O0, nmethod::entry_bci_offset(), O2);
1652 __ cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, Lforward);
1654 // migrate the interpreter frame off of the stack
1656 __ mov(G2_thread, L7);
1657 // save nmethod
1658 __ mov(O0, L6);
1659 __ set_last_Java_frame(SP, noreg);
1660 __ call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7);
1661 __ reset_last_Java_frame();
1662 __ mov(L7, G2_thread);
1664 // move OSR nmethod to I1
1665 __ mov(L6, I1);
1667 // OSR buffer to I0
1668 __ mov(O0, I0);
1670 // remove the interpreter frame
1671 __ restore(I5_savedSP, 0, SP);
1673 // Jump to the osr code.
1674 __ ld_ptr(O1, nmethod::osr_entry_point_offset(), O2);
1675 __ jmp(O2, G0);
1676 __ delayed()->nop();
1678 } else {
1679 // Update Backedge branch separately from invocations
1680 const Register G4_invoke_ctr = G4;
1681 __ increment_backedge_counter(Rcounters, G4_invoke_ctr, G1_scratch);
1682 if (ProfileInterpreter) {
1683 __ test_invocation_counter_for_mdp(G4_invoke_ctr, G3_scratch, Lforward);
1684 if (UseOnStackReplacement) {
1685 __ test_backedge_count_for_osr(O2_bumped_count, l_cur_bcp, G3_scratch);
1686 }
1687 } else {
1688 if (UseOnStackReplacement) {
1689 __ test_backedge_count_for_osr(G4_invoke_ctr, l_cur_bcp, G3_scratch);
1690 }
1691 }
1692 }
1694 __ bind(Lforward);
1695 } else
1696 // Bump bytecode pointer by displacement (take the branch)
1697 __ add( O1_disp, Lbcp, Lbcp );// add to bc addr
1699 // continue with bytecode @ target
1700 // %%%%% Like Intel, could speed things up by moving bytecode fetch to code above,
1701 // %%%%% and changing dispatch_next to dispatch_only
1702 __ dispatch_next(vtos);
1703 }
1706 // Note Condition in argument is TemplateTable::Condition
1707 // arg scope is within class scope
1709 void TemplateTable::if_0cmp(Condition cc) {
1710 // no pointers, integer only!
1711 transition(itos, vtos);
1712 // assume branch is more often taken than not (loops use backward branches)
1713 __ cmp( Otos_i, 0);
1714 __ if_cmp(ccNot(cc), false);
1715 }
1718 void TemplateTable::if_icmp(Condition cc) {
1719 transition(itos, vtos);
1720 __ pop_i(O1);
1721 __ cmp(O1, Otos_i);
1722 __ if_cmp(ccNot(cc), false);
1723 }
1726 void TemplateTable::if_nullcmp(Condition cc) {
1727 transition(atos, vtos);
1728 __ tst(Otos_i);
1729 __ if_cmp(ccNot(cc), true);
1730 }
1733 void TemplateTable::if_acmp(Condition cc) {
1734 transition(atos, vtos);
1735 __ pop_ptr(O1);
1736 __ verify_oop(O1);
1737 __ verify_oop(Otos_i);
1738 __ cmp(O1, Otos_i);
1739 __ if_cmp(ccNot(cc), true);
1740 }
1744 void TemplateTable::ret() {
1745 transition(vtos, vtos);
1746 locals_index(G3_scratch);
1747 __ access_local_returnAddress(G3_scratch, Otos_i);
1748 // Otos_i contains the bci, compute the bcp from that
1750 #ifdef _LP64
1751 #ifdef ASSERT
1752 // jsr result was labeled as an 'itos' not an 'atos' because we cannot GC
1753 // the result. The return address (really a BCI) was stored with an
1754 // 'astore' because JVM specs claim it's a pointer-sized thing. Hence in
1755 // the 64-bit build the 32-bit BCI is actually in the low bits of a 64-bit
1756 // loaded value.
1757 { Label zzz ;
1758 __ set (65536, G3_scratch) ;
1759 __ cmp (Otos_i, G3_scratch) ;
1760 __ bp( Assembler::lessEqualUnsigned, false, Assembler::xcc, Assembler::pn, zzz);
1761 __ delayed()->nop();
1762 __ stop("BCI is in the wrong register half?");
1763 __ bind (zzz) ;
1764 }
1765 #endif
1766 #endif
1768 __ profile_ret(vtos, Otos_i, G4_scratch);
1770 __ ld_ptr(Lmethod, Method::const_offset(), G3_scratch);
1771 __ add(G3_scratch, Otos_i, G3_scratch);
1772 __ add(G3_scratch, in_bytes(ConstMethod::codes_offset()), Lbcp);
1773 __ dispatch_next(vtos);
1774 }
1777 void TemplateTable::wide_ret() {
1778 transition(vtos, vtos);
1779 locals_index_wide(G3_scratch);
1780 __ access_local_returnAddress(G3_scratch, Otos_i);
1781 // Otos_i contains the bci, compute the bcp from that
1783 __ profile_ret(vtos, Otos_i, G4_scratch);
1785 __ ld_ptr(Lmethod, Method::const_offset(), G3_scratch);
1786 __ add(G3_scratch, Otos_i, G3_scratch);
1787 __ add(G3_scratch, in_bytes(ConstMethod::codes_offset()), Lbcp);
1788 __ dispatch_next(vtos);
1789 }
1792 void TemplateTable::tableswitch() {
1793 transition(itos, vtos);
1794 Label default_case, continue_execution;
1796 // align bcp
1797 __ add(Lbcp, BytesPerInt, O1);
1798 __ and3(O1, -BytesPerInt, O1);
1799 // load lo, hi
1800 __ ld(O1, 1 * BytesPerInt, O2); // Low Byte
1801 __ ld(O1, 2 * BytesPerInt, O3); // High Byte
1802 #ifdef _LP64
1803 // Sign extend the 32 bits
1804 __ sra ( Otos_i, 0, Otos_i );
1805 #endif /* _LP64 */
1807 // check against lo & hi
1808 __ cmp( Otos_i, O2);
1809 __ br( Assembler::less, false, Assembler::pn, default_case);
1810 __ delayed()->cmp( Otos_i, O3 );
1811 __ br( Assembler::greater, false, Assembler::pn, default_case);
1812 // lookup dispatch offset
1813 __ delayed()->sub(Otos_i, O2, O2);
1814 __ profile_switch_case(O2, O3, G3_scratch, G4_scratch);
1815 __ sll(O2, LogBytesPerInt, O2);
1816 __ add(O2, 3 * BytesPerInt, O2);
1817 __ ba(continue_execution);
1818 __ delayed()->ld(O1, O2, O2);
1819 // handle default
1820 __ bind(default_case);
1821 __ profile_switch_default(O3);
1822 __ ld(O1, 0, O2); // get default offset
1823 // continue execution
1824 __ bind(continue_execution);
1825 __ add(Lbcp, O2, Lbcp);
1826 __ dispatch_next(vtos);
1827 }
1830 void TemplateTable::lookupswitch() {
1831 transition(itos, itos);
1832 __ stop("lookupswitch bytecode should have been rewritten");
1833 }
1835 void TemplateTable::fast_linearswitch() {
1836 transition(itos, vtos);
1837 Label loop_entry, loop, found, continue_execution;
1838 // align bcp
1839 __ add(Lbcp, BytesPerInt, O1);
1840 __ and3(O1, -BytesPerInt, O1);
1841 // set counter
1842 __ ld(O1, BytesPerInt, O2);
1843 __ sll(O2, LogBytesPerInt + 1, O2); // in word-pairs
1844 __ add(O1, 2 * BytesPerInt, O3); // set first pair addr
1845 __ ba(loop_entry);
1846 __ delayed()->add(O3, O2, O2); // counter now points past last pair
1848 // table search
1849 __ bind(loop);
1850 __ cmp(O4, Otos_i);
1851 __ br(Assembler::equal, true, Assembler::pn, found);
1852 __ delayed()->ld(O3, BytesPerInt, O4); // offset -> O4
1853 __ inc(O3, 2 * BytesPerInt);
1855 __ bind(loop_entry);
1856 __ cmp(O2, O3);
1857 __ brx(Assembler::greaterUnsigned, true, Assembler::pt, loop);
1858 __ delayed()->ld(O3, 0, O4);
1860 // default case
1861 __ ld(O1, 0, O4); // get default offset
1862 if (ProfileInterpreter) {
1863 __ profile_switch_default(O3);
1864 __ ba_short(continue_execution);
1865 }
1867 // entry found -> get offset
1868 __ bind(found);
1869 if (ProfileInterpreter) {
1870 __ sub(O3, O1, O3);
1871 __ sub(O3, 2*BytesPerInt, O3);
1872 __ srl(O3, LogBytesPerInt + 1, O3); // in word-pairs
1873 __ profile_switch_case(O3, O1, O2, G3_scratch);
1875 __ bind(continue_execution);
1876 }
1877 __ add(Lbcp, O4, Lbcp);
1878 __ dispatch_next(vtos);
1879 }
1882 void TemplateTable::fast_binaryswitch() {
1883 transition(itos, vtos);
1884 // Implementation using the following core algorithm: (copied from Intel)
1885 //
1886 // int binary_search(int key, LookupswitchPair* array, int n) {
1887 // // Binary search according to "Methodik des Programmierens" by
1888 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
1889 // int i = 0;
1890 // int j = n;
1891 // while (i+1 < j) {
1892 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
1893 // // with Q: for all i: 0 <= i < n: key < a[i]
1894 // // where a stands for the array and assuming that the (inexisting)
1895 // // element a[n] is infinitely big.
1896 // int h = (i + j) >> 1;
1897 // // i < h < j
1898 // if (key < array[h].fast_match()) {
1899 // j = h;
1900 // } else {
1901 // i = h;
1902 // }
1903 // }
1904 // // R: a[i] <= key < a[i+1] or Q
1905 // // (i.e., if key is within array, i is the correct index)
1906 // return i;
1907 // }
1909 // register allocation
1910 assert(Otos_i == O0, "alias checking");
1911 const Register Rkey = Otos_i; // already set (tosca)
1912 const Register Rarray = O1;
1913 const Register Ri = O2;
1914 const Register Rj = O3;
1915 const Register Rh = O4;
1916 const Register Rscratch = O5;
1918 const int log_entry_size = 3;
1919 const int entry_size = 1 << log_entry_size;
1921 Label found;
1922 // Find Array start
1923 __ add(Lbcp, 3 * BytesPerInt, Rarray);
1924 __ and3(Rarray, -BytesPerInt, Rarray);
1925 // initialize i & j (in delay slot)
1926 __ clr( Ri );
1928 // and start
1929 Label entry;
1930 __ ba(entry);
1931 __ delayed()->ld( Rarray, -BytesPerInt, Rj);
1932 // (Rj is already in the native byte-ordering.)
1934 // binary search loop
1935 { Label loop;
1936 __ bind( loop );
1937 // int h = (i + j) >> 1;
1938 __ sra( Rh, 1, Rh );
1939 // if (key < array[h].fast_match()) {
1940 // j = h;
1941 // } else {
1942 // i = h;
1943 // }
1944 __ sll( Rh, log_entry_size, Rscratch );
1945 __ ld( Rarray, Rscratch, Rscratch );
1946 // (Rscratch is already in the native byte-ordering.)
1947 __ cmp( Rkey, Rscratch );
1948 __ movcc( Assembler::less, false, Assembler::icc, Rh, Rj ); // j = h if (key < array[h].fast_match())
1949 __ movcc( Assembler::greaterEqual, false, Assembler::icc, Rh, Ri ); // i = h if (key >= array[h].fast_match())
1951 // while (i+1 < j)
1952 __ bind( entry );
1953 __ add( Ri, 1, Rscratch );
1954 __ cmp(Rscratch, Rj);
1955 __ br( Assembler::less, true, Assembler::pt, loop );
1956 __ delayed()->add( Ri, Rj, Rh ); // start h = i + j >> 1;
1957 }
1959 // end of binary search, result index is i (must check again!)
1960 Label default_case;
1961 Label continue_execution;
1962 if (ProfileInterpreter) {
1963 __ mov( Ri, Rh ); // Save index in i for profiling
1964 }
1965 __ sll( Ri, log_entry_size, Ri );
1966 __ ld( Rarray, Ri, Rscratch );
1967 // (Rscratch is already in the native byte-ordering.)
1968 __ cmp( Rkey, Rscratch );
1969 __ br( Assembler::notEqual, true, Assembler::pn, default_case );
1970 __ delayed()->ld( Rarray, -2 * BytesPerInt, Rj ); // load default offset -> j
1972 // entry found -> j = offset
1973 __ inc( Ri, BytesPerInt );
1974 __ profile_switch_case(Rh, Rj, Rscratch, Rkey);
1975 __ ld( Rarray, Ri, Rj );
1976 // (Rj is already in the native byte-ordering.)
1978 if (ProfileInterpreter) {
1979 __ ba_short(continue_execution);
1980 }
1982 __ bind(default_case); // fall through (if not profiling)
1983 __ profile_switch_default(Ri);
1985 __ bind(continue_execution);
1986 __ add( Lbcp, Rj, Lbcp );
1987 __ dispatch_next( vtos );
1988 }
1991 void TemplateTable::_return(TosState state) {
1992 transition(state, state);
1993 assert(_desc->calls_vm(), "inconsistent calls_vm information");
1995 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
1996 assert(state == vtos, "only valid state");
1997 __ mov(G0, G3_scratch);
1998 __ access_local_ptr(G3_scratch, Otos_i);
1999 __ load_klass(Otos_i, O2);
2000 __ set(JVM_ACC_HAS_FINALIZER, G3);
2001 __ ld(O2, in_bytes(Klass::access_flags_offset()), O2);
2002 __ andcc(G3, O2, G0);
2003 Label skip_register_finalizer;
2004 __ br(Assembler::zero, false, Assembler::pn, skip_register_finalizer);
2005 __ delayed()->nop();
2007 // Call out to do finalizer registration
2008 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), Otos_i);
2010 __ bind(skip_register_finalizer);
2011 }
2013 // Narrow result if state is itos but result type is smaller.
2014 // Need to narrow in the return bytecode rather than in generate_return_entry
2015 // since compiled code callers expect the result to already be narrowed.
2016 if (state == itos) {
2017 __ narrow(Otos_i);
2018 }
2019 __ remove_activation(state, /* throw_monitor_exception */ true);
2021 // The caller's SP was adjusted upon method entry to accomodate
2022 // the callee's non-argument locals. Undo that adjustment.
2023 __ ret(); // return to caller
2024 __ delayed()->restore(I5_savedSP, G0, SP);
2025 }
2028 // ----------------------------------------------------------------------------
2029 // Volatile variables demand their effects be made known to all CPU's in
2030 // order. Store buffers on most chips allow reads & writes to reorder; the
2031 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of
2032 // memory barrier (i.e., it's not sufficient that the interpreter does not
2033 // reorder volatile references, the hardware also must not reorder them).
2034 //
2035 // According to the new Java Memory Model (JMM):
2036 // (1) All volatiles are serialized wrt to each other.
2037 // ALSO reads & writes act as aquire & release, so:
2038 // (2) A read cannot let unrelated NON-volatile memory refs that happen after
2039 // the read float up to before the read. It's OK for non-volatile memory refs
2040 // that happen before the volatile read to float down below it.
2041 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs
2042 // that happen BEFORE the write float down to after the write. It's OK for
2043 // non-volatile memory refs that happen after the volatile write to float up
2044 // before it.
2045 //
2046 // We only put in barriers around volatile refs (they are expensive), not
2047 // _between_ memory refs (that would require us to track the flavor of the
2048 // previous memory refs). Requirements (2) and (3) require some barriers
2049 // before volatile stores and after volatile loads. These nearly cover
2050 // requirement (1) but miss the volatile-store-volatile-load case. This final
2051 // case is placed after volatile-stores although it could just as well go
2052 // before volatile-loads.
2053 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint) {
2054 // Helper function to insert a is-volatile test and memory barrier
2055 // All current sparc implementations run in TSO, needing only StoreLoad
2056 if ((order_constraint & Assembler::StoreLoad) == 0) return;
2057 __ membar( order_constraint );
2058 }
2060 // ----------------------------------------------------------------------------
2061 void TemplateTable::resolve_cache_and_index(int byte_no,
2062 Register Rcache,
2063 Register index,
2064 size_t index_size) {
2065 // Depends on cpCacheOop layout!
2066 Label resolved;
2068 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
2069 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, Lbyte_code, byte_no, 1, index_size);
2070 __ cmp(Lbyte_code, (int) bytecode()); // have we resolved this bytecode?
2071 __ br(Assembler::equal, false, Assembler::pt, resolved);
2072 __ delayed()->set((int)bytecode(), O1);
2074 address entry;
2075 switch (bytecode()) {
2076 case Bytecodes::_getstatic : // fall through
2077 case Bytecodes::_putstatic : // fall through
2078 case Bytecodes::_getfield : // fall through
2079 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break;
2080 case Bytecodes::_invokevirtual : // fall through
2081 case Bytecodes::_invokespecial : // fall through
2082 case Bytecodes::_invokestatic : // fall through
2083 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
2084 case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break;
2085 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
2086 default:
2087 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode())));
2088 break;
2089 }
2090 // first time invocation - must resolve first
2091 __ call_VM(noreg, entry, O1);
2092 // Update registers with resolved info
2093 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
2094 __ bind(resolved);
2095 }
2097 void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
2098 Register method,
2099 Register itable_index,
2100 Register flags,
2101 bool is_invokevirtual,
2102 bool is_invokevfinal,
2103 bool is_invokedynamic) {
2104 // Uses both G3_scratch and G4_scratch
2105 Register cache = G3_scratch;
2106 Register index = G4_scratch;
2107 assert_different_registers(cache, method, itable_index);
2109 // determine constant pool cache field offsets
2110 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant");
2111 const int method_offset = in_bytes(
2112 ConstantPoolCache::base_offset() +
2113 ((byte_no == f2_byte)
2114 ? ConstantPoolCacheEntry::f2_offset()
2115 : ConstantPoolCacheEntry::f1_offset()
2116 )
2117 );
2118 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() +
2119 ConstantPoolCacheEntry::flags_offset());
2120 // access constant pool cache fields
2121 const int index_offset = in_bytes(ConstantPoolCache::base_offset() +
2122 ConstantPoolCacheEntry::f2_offset());
2124 if (is_invokevfinal) {
2125 __ get_cache_and_index_at_bcp(cache, index, 1);
2126 __ ld_ptr(Address(cache, method_offset), method);
2127 } else {
2128 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2));
2129 resolve_cache_and_index(byte_no, cache, index, index_size);
2130 __ ld_ptr(Address(cache, method_offset), method);
2131 }
2133 if (itable_index != noreg) {
2134 // pick up itable or appendix index from f2 also:
2135 __ ld_ptr(Address(cache, index_offset), itable_index);
2136 }
2137 __ ld_ptr(Address(cache, flags_offset), flags);
2138 }
2140 // The Rcache register must be set before call
2141 void TemplateTable::load_field_cp_cache_entry(Register Robj,
2142 Register Rcache,
2143 Register index,
2144 Register Roffset,
2145 Register Rflags,
2146 bool is_static) {
2147 assert_different_registers(Rcache, Rflags, Roffset);
2149 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2151 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2152 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2153 if (is_static) {
2154 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f1_offset(), Robj);
2155 const int mirror_offset = in_bytes(Klass::java_mirror_offset());
2156 __ ld_ptr( Robj, mirror_offset, Robj);
2157 }
2158 }
2160 // The registers Rcache and index expected to be set before call.
2161 // Correct values of the Rcache and index registers are preserved.
2162 void TemplateTable::jvmti_post_field_access(Register Rcache,
2163 Register index,
2164 bool is_static,
2165 bool has_tos) {
2166 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2168 if (JvmtiExport::can_post_field_access()) {
2169 // Check to see if a field access watch has been set before we take
2170 // the time to call into the VM.
2171 Label Label1;
2172 assert_different_registers(Rcache, index, G1_scratch);
2173 AddressLiteral get_field_access_count_addr(JvmtiExport::get_field_access_count_addr());
2174 __ load_contents(get_field_access_count_addr, G1_scratch);
2175 __ cmp_and_br_short(G1_scratch, 0, Assembler::equal, Assembler::pt, Label1);
2177 __ add(Rcache, in_bytes(cp_base_offset), Rcache);
2179 if (is_static) {
2180 __ clr(Otos_i);
2181 } else {
2182 if (has_tos) {
2183 // save object pointer before call_VM() clobbers it
2184 __ push_ptr(Otos_i); // put object on tos where GC wants it.
2185 } else {
2186 // Load top of stack (do not pop the value off the stack);
2187 __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
2188 }
2189 __ verify_oop(Otos_i);
2190 }
2191 // Otos_i: object pointer or NULL if static
2192 // Rcache: cache entry pointer
2193 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
2194 Otos_i, Rcache);
2195 if (!is_static && has_tos) {
2196 __ pop_ptr(Otos_i); // restore object pointer
2197 __ verify_oop(Otos_i);
2198 }
2199 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2200 __ bind(Label1);
2201 }
2202 }
2204 void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
2205 transition(vtos, vtos);
2207 Register Rcache = G3_scratch;
2208 Register index = G4_scratch;
2209 Register Rclass = Rcache;
2210 Register Roffset= G4_scratch;
2211 Register Rflags = G1_scratch;
2212 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2214 resolve_cache_and_index(byte_no, Rcache, index, sizeof(u2));
2215 jvmti_post_field_access(Rcache, index, is_static, false);
2216 load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
2218 if (!is_static) {
2219 pop_and_check_object(Rclass);
2220 } else {
2221 __ verify_oop(Rclass);
2222 }
2224 Label exit;
2226 Assembler::Membar_mask_bits membar_bits =
2227 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2229 if (__ membar_has_effect(membar_bits)) {
2230 // Get volatile flag
2231 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2232 __ and3(Rflags, Lscratch, Lscratch);
2233 }
2235 Label checkVolatile;
2237 // compute field type
2238 Label notByte, notBool, notInt, notShort, notChar, notLong, notFloat, notObj;
2239 __ srl(Rflags, ConstantPoolCacheEntry::tos_state_shift, Rflags);
2240 // Make sure we don't need to mask Rflags after the above shift
2241 ConstantPoolCacheEntry::verify_tos_state_shift();
2243 // Check atos before itos for getstatic, more likely (in Queens at least)
2244 __ cmp(Rflags, atos);
2245 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2246 __ delayed() ->cmp(Rflags, itos);
2248 // atos
2249 __ load_heap_oop(Rclass, Roffset, Otos_i);
2250 __ verify_oop(Otos_i);
2251 __ push(atos);
2252 if (!is_static) {
2253 patch_bytecode(Bytecodes::_fast_agetfield, G3_scratch, G4_scratch);
2254 }
2255 __ ba(checkVolatile);
2256 __ delayed()->tst(Lscratch);
2258 __ bind(notObj);
2260 // cmp(Rflags, itos);
2261 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2262 __ delayed() ->cmp(Rflags, ltos);
2264 // itos
2265 __ ld(Rclass, Roffset, Otos_i);
2266 __ push(itos);
2267 if (!is_static) {
2268 patch_bytecode(Bytecodes::_fast_igetfield, G3_scratch, G4_scratch);
2269 }
2270 __ ba(checkVolatile);
2271 __ delayed()->tst(Lscratch);
2273 __ bind(notInt);
2275 // cmp(Rflags, ltos);
2276 __ br(Assembler::notEqual, false, Assembler::pt, notLong);
2277 __ delayed() ->cmp(Rflags, btos);
2279 // ltos
2280 // load must be atomic
2281 __ ld_long(Rclass, Roffset, Otos_l);
2282 __ push(ltos);
2283 if (!is_static) {
2284 patch_bytecode(Bytecodes::_fast_lgetfield, G3_scratch, G4_scratch);
2285 }
2286 __ ba(checkVolatile);
2287 __ delayed()->tst(Lscratch);
2289 __ bind(notLong);
2291 // cmp(Rflags, btos);
2292 __ br(Assembler::notEqual, false, Assembler::pt, notByte);
2293 __ delayed() ->cmp(Rflags, ztos);
2295 // btos
2296 __ ldsb(Rclass, Roffset, Otos_i);
2297 __ push(itos);
2298 if (!is_static) {
2299 patch_bytecode(Bytecodes::_fast_bgetfield, G3_scratch, G4_scratch);
2300 }
2301 __ ba(checkVolatile);
2302 __ delayed()->tst(Lscratch);
2304 __ bind(notByte);
2306 // cmp(Rflags, ztos);
2307 __ br(Assembler::notEqual, false, Assembler::pt, notBool);
2308 __ delayed() ->cmp(Rflags, ctos);
2310 // ztos
2311 __ ldsb(Rclass, Roffset, Otos_i);
2312 __ push(itos);
2313 if (!is_static) {
2314 // use btos rewriting, no truncating to t/f bit is needed for getfield.
2315 patch_bytecode(Bytecodes::_fast_bgetfield, G3_scratch, G4_scratch);
2316 }
2317 __ ba(checkVolatile);
2318 __ delayed()->tst(Lscratch);
2320 __ bind(notBool);
2322 // cmp(Rflags, ctos);
2323 __ br(Assembler::notEqual, false, Assembler::pt, notChar);
2324 __ delayed() ->cmp(Rflags, stos);
2326 // ctos
2327 __ lduh(Rclass, Roffset, Otos_i);
2328 __ push(itos);
2329 if (!is_static) {
2330 patch_bytecode(Bytecodes::_fast_cgetfield, G3_scratch, G4_scratch);
2331 }
2332 __ ba(checkVolatile);
2333 __ delayed()->tst(Lscratch);
2335 __ bind(notChar);
2337 // cmp(Rflags, stos);
2338 __ br(Assembler::notEqual, false, Assembler::pt, notShort);
2339 __ delayed() ->cmp(Rflags, ftos);
2341 // stos
2342 __ ldsh(Rclass, Roffset, Otos_i);
2343 __ push(itos);
2344 if (!is_static) {
2345 patch_bytecode(Bytecodes::_fast_sgetfield, G3_scratch, G4_scratch);
2346 }
2347 __ ba(checkVolatile);
2348 __ delayed()->tst(Lscratch);
2350 __ bind(notShort);
2353 // cmp(Rflags, ftos);
2354 __ br(Assembler::notEqual, false, Assembler::pt, notFloat);
2355 __ delayed() ->tst(Lscratch);
2357 // ftos
2358 __ ldf(FloatRegisterImpl::S, Rclass, Roffset, Ftos_f);
2359 __ push(ftos);
2360 if (!is_static) {
2361 patch_bytecode(Bytecodes::_fast_fgetfield, G3_scratch, G4_scratch);
2362 }
2363 __ ba(checkVolatile);
2364 __ delayed()->tst(Lscratch);
2366 __ bind(notFloat);
2369 // dtos
2370 __ ldf(FloatRegisterImpl::D, Rclass, Roffset, Ftos_d);
2371 __ push(dtos);
2372 if (!is_static) {
2373 patch_bytecode(Bytecodes::_fast_dgetfield, G3_scratch, G4_scratch);
2374 }
2376 __ bind(checkVolatile);
2377 if (__ membar_has_effect(membar_bits)) {
2378 // __ tst(Lscratch); executed in delay slot
2379 __ br(Assembler::zero, false, Assembler::pt, exit);
2380 __ delayed()->nop();
2381 volatile_barrier(membar_bits);
2382 }
2384 __ bind(exit);
2385 }
2388 void TemplateTable::getfield(int byte_no) {
2389 getfield_or_static(byte_no, false);
2390 }
2392 void TemplateTable::getstatic(int byte_no) {
2393 getfield_or_static(byte_no, true);
2394 }
2397 void TemplateTable::fast_accessfield(TosState state) {
2398 transition(atos, state);
2399 Register Rcache = G3_scratch;
2400 Register index = G4_scratch;
2401 Register Roffset = G4_scratch;
2402 Register Rflags = Rcache;
2403 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2405 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2406 jvmti_post_field_access(Rcache, index, /*is_static*/false, /*has_tos*/true);
2408 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2410 __ null_check(Otos_i);
2411 __ verify_oop(Otos_i);
2413 Label exit;
2415 Assembler::Membar_mask_bits membar_bits =
2416 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2417 if (__ membar_has_effect(membar_bits)) {
2418 // Get volatile flag
2419 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Rflags);
2420 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2421 }
2423 switch (bytecode()) {
2424 case Bytecodes::_fast_bgetfield:
2425 __ ldsb(Otos_i, Roffset, Otos_i);
2426 break;
2427 case Bytecodes::_fast_cgetfield:
2428 __ lduh(Otos_i, Roffset, Otos_i);
2429 break;
2430 case Bytecodes::_fast_sgetfield:
2431 __ ldsh(Otos_i, Roffset, Otos_i);
2432 break;
2433 case Bytecodes::_fast_igetfield:
2434 __ ld(Otos_i, Roffset, Otos_i);
2435 break;
2436 case Bytecodes::_fast_lgetfield:
2437 __ ld_long(Otos_i, Roffset, Otos_l);
2438 break;
2439 case Bytecodes::_fast_fgetfield:
2440 __ ldf(FloatRegisterImpl::S, Otos_i, Roffset, Ftos_f);
2441 break;
2442 case Bytecodes::_fast_dgetfield:
2443 __ ldf(FloatRegisterImpl::D, Otos_i, Roffset, Ftos_d);
2444 break;
2445 case Bytecodes::_fast_agetfield:
2446 __ load_heap_oop(Otos_i, Roffset, Otos_i);
2447 break;
2448 default:
2449 ShouldNotReachHere();
2450 }
2452 if (__ membar_has_effect(membar_bits)) {
2453 __ btst(Lscratch, Rflags);
2454 __ br(Assembler::zero, false, Assembler::pt, exit);
2455 __ delayed()->nop();
2456 volatile_barrier(membar_bits);
2457 __ bind(exit);
2458 }
2460 if (state == atos) {
2461 __ verify_oop(Otos_i); // does not blow flags!
2462 }
2463 }
2465 void TemplateTable::jvmti_post_fast_field_mod() {
2466 if (JvmtiExport::can_post_field_modification()) {
2467 // Check to see if a field modification watch has been set before we take
2468 // the time to call into the VM.
2469 Label done;
2470 AddressLiteral get_field_modification_count_addr(JvmtiExport::get_field_modification_count_addr());
2471 __ load_contents(get_field_modification_count_addr, G4_scratch);
2472 __ cmp_and_br_short(G4_scratch, 0, Assembler::equal, Assembler::pt, done);
2473 __ pop_ptr(G4_scratch); // copy the object pointer from tos
2474 __ verify_oop(G4_scratch);
2475 __ push_ptr(G4_scratch); // put the object pointer back on tos
2476 __ get_cache_entry_pointer_at_bcp(G1_scratch, G3_scratch, 1);
2477 // Save tos values before call_VM() clobbers them. Since we have
2478 // to do it for every data type, we use the saved values as the
2479 // jvalue object.
2480 switch (bytecode()) { // save tos values before call_VM() clobbers them
2481 case Bytecodes::_fast_aputfield: __ push_ptr(Otos_i); break;
2482 case Bytecodes::_fast_bputfield: // fall through
2483 case Bytecodes::_fast_zputfield: // fall through
2484 case Bytecodes::_fast_sputfield: // fall through
2485 case Bytecodes::_fast_cputfield: // fall through
2486 case Bytecodes::_fast_iputfield: __ push_i(Otos_i); break;
2487 case Bytecodes::_fast_dputfield: __ push_d(Ftos_d); break;
2488 case Bytecodes::_fast_fputfield: __ push_f(Ftos_f); break;
2489 // get words in right order for use as jvalue object
2490 case Bytecodes::_fast_lputfield: __ push_l(Otos_l); break;
2491 }
2492 // setup pointer to jvalue object
2493 __ mov(Lesp, G3_scratch); __ inc(G3_scratch, wordSize);
2494 // G4_scratch: object pointer
2495 // G1_scratch: cache entry pointer
2496 // G3_scratch: jvalue object on the stack
2497 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), G4_scratch, G1_scratch, G3_scratch);
2498 switch (bytecode()) { // restore tos values
2499 case Bytecodes::_fast_aputfield: __ pop_ptr(Otos_i); break;
2500 case Bytecodes::_fast_bputfield: // fall through
2501 case Bytecodes::_fast_zputfield: // fall through
2502 case Bytecodes::_fast_sputfield: // fall through
2503 case Bytecodes::_fast_cputfield: // fall through
2504 case Bytecodes::_fast_iputfield: __ pop_i(Otos_i); break;
2505 case Bytecodes::_fast_dputfield: __ pop_d(Ftos_d); break;
2506 case Bytecodes::_fast_fputfield: __ pop_f(Ftos_f); break;
2507 case Bytecodes::_fast_lputfield: __ pop_l(Otos_l); break;
2508 }
2509 __ bind(done);
2510 }
2511 }
2513 // The registers Rcache and index expected to be set before call.
2514 // The function may destroy various registers, just not the Rcache and index registers.
2515 void TemplateTable::jvmti_post_field_mod(Register Rcache, Register index, bool is_static) {
2516 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2518 if (JvmtiExport::can_post_field_modification()) {
2519 // Check to see if a field modification watch has been set before we take
2520 // the time to call into the VM.
2521 Label Label1;
2522 assert_different_registers(Rcache, index, G1_scratch);
2523 AddressLiteral get_field_modification_count_addr(JvmtiExport::get_field_modification_count_addr());
2524 __ load_contents(get_field_modification_count_addr, G1_scratch);
2525 __ cmp_and_br_short(G1_scratch, 0, Assembler::zero, Assembler::pt, Label1);
2527 // The Rcache and index registers have been already set.
2528 // This allows to eliminate this call but the Rcache and index
2529 // registers must be correspondingly used after this line.
2530 __ get_cache_and_index_at_bcp(G1_scratch, G4_scratch, 1);
2532 __ add(G1_scratch, in_bytes(cp_base_offset), G3_scratch);
2533 if (is_static) {
2534 // Life is simple. Null out the object pointer.
2535 __ clr(G4_scratch);
2536 } else {
2537 Register Rflags = G1_scratch;
2538 // Life is harder. The stack holds the value on top, followed by the
2539 // object. We don't know the size of the value, though; it could be
2540 // one or two words depending on its type. As a result, we must find
2541 // the type to determine where the object is.
2543 Label two_word, valsizeknown;
2544 __ ld_ptr(G1_scratch, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2545 __ mov(Lesp, G4_scratch);
2546 __ srl(Rflags, ConstantPoolCacheEntry::tos_state_shift, Rflags);
2547 // Make sure we don't need to mask Rflags after the above shift
2548 ConstantPoolCacheEntry::verify_tos_state_shift();
2549 __ cmp(Rflags, ltos);
2550 __ br(Assembler::equal, false, Assembler::pt, two_word);
2551 __ delayed()->cmp(Rflags, dtos);
2552 __ br(Assembler::equal, false, Assembler::pt, two_word);
2553 __ delayed()->nop();
2554 __ inc(G4_scratch, Interpreter::expr_offset_in_bytes(1));
2555 __ ba_short(valsizeknown);
2556 __ bind(two_word);
2558 __ inc(G4_scratch, Interpreter::expr_offset_in_bytes(2));
2560 __ bind(valsizeknown);
2561 // setup object pointer
2562 __ ld_ptr(G4_scratch, 0, G4_scratch);
2563 __ verify_oop(G4_scratch);
2564 }
2565 // setup pointer to jvalue object
2566 __ mov(Lesp, G1_scratch); __ inc(G1_scratch, wordSize);
2567 // G4_scratch: object pointer or NULL if static
2568 // G3_scratch: cache entry pointer
2569 // G1_scratch: jvalue object on the stack
2570 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification),
2571 G4_scratch, G3_scratch, G1_scratch);
2572 __ get_cache_and_index_at_bcp(Rcache, index, 1);
2573 __ bind(Label1);
2574 }
2575 }
2577 void TemplateTable::pop_and_check_object(Register r) {
2578 __ pop_ptr(r);
2579 __ null_check(r); // for field access must check obj.
2580 __ verify_oop(r);
2581 }
2583 void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
2584 transition(vtos, vtos);
2585 Register Rcache = G3_scratch;
2586 Register index = G4_scratch;
2587 Register Rclass = Rcache;
2588 Register Roffset= G4_scratch;
2589 Register Rflags = G1_scratch;
2590 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2592 resolve_cache_and_index(byte_no, Rcache, index, sizeof(u2));
2593 jvmti_post_field_mod(Rcache, index, is_static);
2594 load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
2596 Assembler::Membar_mask_bits read_bits =
2597 Assembler::Membar_mask_bits(Assembler::LoadStore | Assembler::StoreStore);
2598 Assembler::Membar_mask_bits write_bits = Assembler::StoreLoad;
2600 Label notVolatile, checkVolatile, exit;
2601 if (__ membar_has_effect(read_bits) || __ membar_has_effect(write_bits)) {
2602 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2603 __ and3(Rflags, Lscratch, Lscratch);
2605 if (__ membar_has_effect(read_bits)) {
2606 __ cmp_and_br_short(Lscratch, 0, Assembler::equal, Assembler::pt, notVolatile);
2607 volatile_barrier(read_bits);
2608 __ bind(notVolatile);
2609 }
2610 }
2612 __ srl(Rflags, ConstantPoolCacheEntry::tos_state_shift, Rflags);
2613 // Make sure we don't need to mask Rflags after the above shift
2614 ConstantPoolCacheEntry::verify_tos_state_shift();
2616 // compute field type
2617 Label notInt, notShort, notChar, notObj, notByte, notBool, notLong, notFloat;
2619 if (is_static) {
2620 // putstatic with object type most likely, check that first
2621 __ cmp(Rflags, atos);
2622 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2623 __ delayed()->cmp(Rflags, itos);
2625 // atos
2626 {
2627 __ pop_ptr();
2628 __ verify_oop(Otos_i);
2629 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2630 __ ba(checkVolatile);
2631 __ delayed()->tst(Lscratch);
2632 }
2634 __ bind(notObj);
2635 // cmp(Rflags, itos);
2636 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2637 __ delayed()->cmp(Rflags, btos);
2639 // itos
2640 {
2641 __ pop_i();
2642 __ st(Otos_i, Rclass, Roffset);
2643 __ ba(checkVolatile);
2644 __ delayed()->tst(Lscratch);
2645 }
2647 __ bind(notInt);
2648 } else {
2649 // putfield with int type most likely, check that first
2650 __ cmp(Rflags, itos);
2651 __ br(Assembler::notEqual, false, Assembler::pt, notInt);
2652 __ delayed()->cmp(Rflags, atos);
2654 // itos
2655 {
2656 __ pop_i();
2657 pop_and_check_object(Rclass);
2658 __ st(Otos_i, Rclass, Roffset);
2659 patch_bytecode(Bytecodes::_fast_iputfield, G3_scratch, G4_scratch, true, byte_no);
2660 __ ba(checkVolatile);
2661 __ delayed()->tst(Lscratch);
2662 }
2664 __ bind(notInt);
2665 // cmp(Rflags, atos);
2666 __ br(Assembler::notEqual, false, Assembler::pt, notObj);
2667 __ delayed()->cmp(Rflags, btos);
2669 // atos
2670 {
2671 __ pop_ptr();
2672 pop_and_check_object(Rclass);
2673 __ verify_oop(Otos_i);
2674 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2675 patch_bytecode(Bytecodes::_fast_aputfield, G3_scratch, G4_scratch, true, byte_no);
2676 __ ba(checkVolatile);
2677 __ delayed()->tst(Lscratch);
2678 }
2680 __ bind(notObj);
2681 }
2683 // cmp(Rflags, btos);
2684 __ br(Assembler::notEqual, false, Assembler::pt, notByte);
2685 __ delayed()->cmp(Rflags, ztos);
2687 // btos
2688 {
2689 __ pop_i();
2690 if (!is_static) pop_and_check_object(Rclass);
2691 __ stb(Otos_i, Rclass, Roffset);
2692 if (!is_static) {
2693 patch_bytecode(Bytecodes::_fast_bputfield, G3_scratch, G4_scratch, true, byte_no);
2694 }
2695 __ ba(checkVolatile);
2696 __ delayed()->tst(Lscratch);
2697 }
2699 __ bind(notByte);
2701 // cmp(Rflags, btos);
2702 __ br(Assembler::notEqual, false, Assembler::pt, notBool);
2703 __ delayed()->cmp(Rflags, ltos);
2705 // ztos
2706 {
2707 __ pop_i();
2708 if (!is_static) pop_and_check_object(Rclass);
2709 __ and3(Otos_i, 1, Otos_i);
2710 __ stb(Otos_i, Rclass, Roffset);
2711 if (!is_static) {
2712 patch_bytecode(Bytecodes::_fast_zputfield, G3_scratch, G4_scratch, true, byte_no);
2713 }
2714 __ ba(checkVolatile);
2715 __ delayed()->tst(Lscratch);
2716 }
2718 __ bind(notBool);
2719 // cmp(Rflags, ltos);
2720 __ br(Assembler::notEqual, false, Assembler::pt, notLong);
2721 __ delayed()->cmp(Rflags, ctos);
2723 // ltos
2724 {
2725 __ pop_l();
2726 if (!is_static) pop_and_check_object(Rclass);
2727 __ st_long(Otos_l, Rclass, Roffset);
2728 if (!is_static) {
2729 patch_bytecode(Bytecodes::_fast_lputfield, G3_scratch, G4_scratch, true, byte_no);
2730 }
2731 __ ba(checkVolatile);
2732 __ delayed()->tst(Lscratch);
2733 }
2735 __ bind(notLong);
2736 // cmp(Rflags, ctos);
2737 __ br(Assembler::notEqual, false, Assembler::pt, notChar);
2738 __ delayed()->cmp(Rflags, stos);
2740 // ctos (char)
2741 {
2742 __ pop_i();
2743 if (!is_static) pop_and_check_object(Rclass);
2744 __ sth(Otos_i, Rclass, Roffset);
2745 if (!is_static) {
2746 patch_bytecode(Bytecodes::_fast_cputfield, G3_scratch, G4_scratch, true, byte_no);
2747 }
2748 __ ba(checkVolatile);
2749 __ delayed()->tst(Lscratch);
2750 }
2752 __ bind(notChar);
2753 // cmp(Rflags, stos);
2754 __ br(Assembler::notEqual, false, Assembler::pt, notShort);
2755 __ delayed()->cmp(Rflags, ftos);
2757 // stos (short)
2758 {
2759 __ pop_i();
2760 if (!is_static) pop_and_check_object(Rclass);
2761 __ sth(Otos_i, Rclass, Roffset);
2762 if (!is_static) {
2763 patch_bytecode(Bytecodes::_fast_sputfield, G3_scratch, G4_scratch, true, byte_no);
2764 }
2765 __ ba(checkVolatile);
2766 __ delayed()->tst(Lscratch);
2767 }
2769 __ bind(notShort);
2770 // cmp(Rflags, ftos);
2771 __ br(Assembler::notZero, false, Assembler::pt, notFloat);
2772 __ delayed()->nop();
2774 // ftos
2775 {
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, true, byte_no);
2781 }
2782 __ ba(checkVolatile);
2783 __ delayed()->tst(Lscratch);
2784 }
2786 __ bind(notFloat);
2788 // dtos
2789 {
2790 __ pop_d();
2791 if (!is_static) pop_and_check_object(Rclass);
2792 __ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
2793 if (!is_static) {
2794 patch_bytecode(Bytecodes::_fast_dputfield, G3_scratch, G4_scratch, true, byte_no);
2795 }
2796 }
2798 __ bind(checkVolatile);
2799 __ tst(Lscratch);
2801 if (__ membar_has_effect(write_bits)) {
2802 // __ tst(Lscratch); in delay slot
2803 __ br(Assembler::zero, false, Assembler::pt, exit);
2804 __ delayed()->nop();
2805 volatile_barrier(Assembler::StoreLoad);
2806 __ bind(exit);
2807 }
2808 }
2810 void TemplateTable::fast_storefield(TosState state) {
2811 transition(state, vtos);
2812 Register Rcache = G3_scratch;
2813 Register Rclass = Rcache;
2814 Register Roffset= G4_scratch;
2815 Register Rflags = G1_scratch;
2816 ByteSize cp_base_offset = ConstantPoolCache::base_offset();
2818 jvmti_post_fast_field_mod();
2820 __ get_cache_and_index_at_bcp(Rcache, G4_scratch, 1);
2822 Assembler::Membar_mask_bits read_bits =
2823 Assembler::Membar_mask_bits(Assembler::LoadStore | Assembler::StoreStore);
2824 Assembler::Membar_mask_bits write_bits = Assembler::StoreLoad;
2826 Label notVolatile, checkVolatile, exit;
2827 if (__ membar_has_effect(read_bits) || __ membar_has_effect(write_bits)) {
2828 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::flags_offset(), Rflags);
2829 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), Lscratch);
2830 __ and3(Rflags, Lscratch, Lscratch);
2831 if (__ membar_has_effect(read_bits)) {
2832 __ cmp_and_br_short(Lscratch, 0, Assembler::equal, Assembler::pt, notVolatile);
2833 volatile_barrier(read_bits);
2834 __ bind(notVolatile);
2835 }
2836 }
2838 __ ld_ptr(Rcache, cp_base_offset + ConstantPoolCacheEntry::f2_offset(), Roffset);
2839 pop_and_check_object(Rclass);
2841 switch (bytecode()) {
2842 case Bytecodes::_fast_zputfield: __ and3(Otos_i, 1, Otos_i); // fall through to bputfield
2843 case Bytecodes::_fast_bputfield: __ stb(Otos_i, Rclass, Roffset); break;
2844 case Bytecodes::_fast_cputfield: /* fall through */
2845 case Bytecodes::_fast_sputfield: __ sth(Otos_i, Rclass, Roffset); break;
2846 case Bytecodes::_fast_iputfield: __ st(Otos_i, Rclass, Roffset); break;
2847 case Bytecodes::_fast_lputfield: __ st_long(Otos_l, Rclass, Roffset); break;
2848 case Bytecodes::_fast_fputfield:
2849 __ stf(FloatRegisterImpl::S, Ftos_f, Rclass, Roffset);
2850 break;
2851 case Bytecodes::_fast_dputfield:
2852 __ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
2853 break;
2854 case Bytecodes::_fast_aputfield:
2855 do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
2856 break;
2857 default:
2858 ShouldNotReachHere();
2859 }
2861 if (__ membar_has_effect(write_bits)) {
2862 __ cmp_and_br_short(Lscratch, 0, Assembler::equal, Assembler::pt, exit);
2863 volatile_barrier(Assembler::StoreLoad);
2864 __ bind(exit);
2865 }
2866 }
2869 void TemplateTable::putfield(int byte_no) {
2870 putfield_or_static(byte_no, false);
2871 }
2873 void TemplateTable::putstatic(int byte_no) {
2874 putfield_or_static(byte_no, true);
2875 }
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;
2885 __ ld_ptr(Llocals, 0, Rreceiver);
2887 // access constant pool cache (is resolved)
2888 __ get_cache_and_index_at_bcp(Rcache, G4_scratch, 2);
2889 __ ld_ptr(Rcache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset(), Roffset);
2890 __ add(Lbcp, 1, Lbcp); // needed to report exception at the correct bcp
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 }
2904 Assembler::Membar_mask_bits membar_bits =
2905 Assembler::Membar_mask_bits(Assembler::LoadLoad | Assembler::LoadStore);
2906 if (__ membar_has_effect(membar_bits)) {
2908 // Get is_volatile value in Rflags and check if membar is needed
2909 __ ld_ptr(Rcache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset(), Rflags);
2911 // Test volatile
2912 Label notVolatile;
2913 __ set((1 << ConstantPoolCacheEntry::is_volatile_shift), 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 }
2921 __ interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
2922 __ sub(Lbcp, 1, Lbcp);
2923 }
2925 //----------------------------------------------------------------------------------------------------
2926 // Calls
2928 void TemplateTable::count_calls(Register method, Register temp) {
2929 // implemented elsewhere
2930 ShouldNotReachHere();
2931 }
2933 void TemplateTable::prepare_invoke(int byte_no,
2934 Register method, // linked method (or i-klass)
2935 Register ra, // return address
2936 Register index, // itable index, MethodType, etc.
2937 Register recv, // if caller wants to see it
2938 Register flags // if caller wants to test it
2939 ) {
2940 // determine flags
2941 const Bytecodes::Code code = bytecode();
2942 const bool is_invokeinterface = code == Bytecodes::_invokeinterface;
2943 const bool is_invokedynamic = code == Bytecodes::_invokedynamic;
2944 const bool is_invokehandle = code == Bytecodes::_invokehandle;
2945 const bool is_invokevirtual = code == Bytecodes::_invokevirtual;
2946 const bool is_invokespecial = code == Bytecodes::_invokespecial;
2947 const bool load_receiver = (recv != noreg);
2948 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), "");
2949 assert(recv == noreg || recv == O0, "");
2950 assert(flags == noreg || flags == O1, "");
2952 // setup registers & access constant pool cache
2953 if (recv == noreg) recv = O0;
2954 if (flags == noreg) flags = O1;
2955 const Register temp = O2;
2956 assert_different_registers(method, ra, index, recv, flags, temp);
2958 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
2960 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
2962 // maybe push appendix to arguments
2963 if (is_invokedynamic || is_invokehandle) {
2964 Label L_no_push;
2965 __ set((1 << ConstantPoolCacheEntry::has_appendix_shift), temp);
2966 __ btst(flags, temp);
2967 __ br(Assembler::zero, false, Assembler::pt, L_no_push);
2968 __ delayed()->nop();
2969 // Push the appendix as a trailing parameter.
2970 // This must be done before we get the receiver,
2971 // since the parameter_size includes it.
2972 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0");
2973 __ load_resolved_reference_at_index(temp, index);
2974 __ verify_oop(temp);
2975 __ push_ptr(temp); // push appendix (MethodType, CallSite, etc.)
2976 __ bind(L_no_push);
2977 }
2979 // load receiver if needed (after appendix is pushed so parameter size is correct)
2980 if (load_receiver) {
2981 __ and3(flags, ConstantPoolCacheEntry::parameter_size_mask, temp); // get parameter size
2982 __ load_receiver(temp, recv); // __ argument_address uses Gargs but we need Lesp
2983 __ verify_oop(recv);
2984 }
2986 // compute return type
2987 __ srl(flags, ConstantPoolCacheEntry::tos_state_shift, ra);
2988 // Make sure we don't need to mask flags after the above shift
2989 ConstantPoolCacheEntry::verify_tos_state_shift();
2990 // load return address
2991 {
2992 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
2993 AddressLiteral table(table_addr);
2994 __ set(table, temp);
2995 __ sll(ra, LogBytesPerWord, ra);
2996 __ ld_ptr(Address(temp, ra), ra);
2997 }
2998 }
3001 void TemplateTable::generate_vtable_call(Register Rrecv, Register Rindex, Register Rret) {
3002 Register Rcall = Rindex;
3003 assert_different_registers(Rcall, G5_method, Gargs, Rret);
3005 // get target Method* & entry point
3006 __ lookup_virtual_method(Rrecv, Rindex, G5_method);
3007 __ profile_arguments_type(G5_method, Rcall, Gargs, true);
3008 __ call_from_interpreter(Rcall, Gargs, Rret);
3009 }
3011 void TemplateTable::invokevirtual(int byte_no) {
3012 transition(vtos, vtos);
3013 assert(byte_no == f2_byte, "use this argument");
3015 Register Rscratch = G3_scratch;
3016 Register Rtemp = G4_scratch;
3017 Register Rret = Lscratch;
3018 Register O0_recv = O0;
3019 Label notFinal;
3021 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, true, false, false);
3022 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3024 // Check for vfinal
3025 __ set((1 << ConstantPoolCacheEntry::is_vfinal_shift), G4_scratch);
3026 __ btst(Rret, G4_scratch);
3027 __ br(Assembler::zero, false, Assembler::pt, notFinal);
3028 __ delayed()->and3(Rret, 0xFF, G4_scratch); // gets number of parameters
3030 patch_bytecode(Bytecodes::_fast_invokevfinal, Rscratch, Rtemp);
3032 invokevfinal_helper(Rscratch, Rret);
3034 __ bind(notFinal);
3036 __ mov(G5_method, Rscratch); // better scratch register
3037 __ load_receiver(G4_scratch, O0_recv); // gets receiverOop
3038 // receiver is in O0_recv
3039 __ verify_oop(O0_recv);
3041 // get return address
3042 AddressLiteral table(Interpreter::invoke_return_entry_table());
3043 __ set(table, Rtemp);
3044 __ srl(Rret, ConstantPoolCacheEntry::tos_state_shift, Rret); // get return type
3045 // Make sure we don't need to mask Rret after the above shift
3046 ConstantPoolCacheEntry::verify_tos_state_shift();
3047 __ sll(Rret, LogBytesPerWord, Rret);
3048 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3050 // get receiver klass
3051 __ null_check(O0_recv, oopDesc::klass_offset_in_bytes());
3052 __ load_klass(O0_recv, O0_recv);
3053 __ verify_klass_ptr(O0_recv);
3055 __ profile_virtual_call(O0_recv, O4);
3057 generate_vtable_call(O0_recv, Rscratch, Rret);
3058 }
3060 void TemplateTable::fast_invokevfinal(int byte_no) {
3061 transition(vtos, vtos);
3062 assert(byte_no == f2_byte, "use this argument");
3064 load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Lscratch, true,
3065 /*is_invokevfinal*/true, false);
3066 __ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
3067 invokevfinal_helper(G3_scratch, Lscratch);
3068 }
3070 void TemplateTable::invokevfinal_helper(Register Rscratch, Register Rret) {
3071 Register Rtemp = G4_scratch;
3073 // Load receiver from stack slot
3074 __ ld_ptr(G5_method, in_bytes(Method::const_offset()), G4_scratch);
3075 __ lduh(G4_scratch, in_bytes(ConstMethod::size_of_parameters_offset()), G4_scratch);
3076 __ load_receiver(G4_scratch, O0);
3078 // receiver NULL check
3079 __ null_check(O0);
3081 __ profile_final_call(O4);
3082 __ profile_arguments_type(G5_method, Rscratch, Gargs, true);
3084 // get return address
3085 AddressLiteral table(Interpreter::invoke_return_entry_table());
3086 __ set(table, Rtemp);
3087 __ srl(Rret, ConstantPoolCacheEntry::tos_state_shift, Rret); // get return type
3088 // Make sure we don't need to mask Rret after the above shift
3089 ConstantPoolCacheEntry::verify_tos_state_shift();
3090 __ sll(Rret, LogBytesPerWord, Rret);
3091 __ ld_ptr(Rtemp, Rret, Rret); // get return address
3094 // do the call
3095 __ call_from_interpreter(Rscratch, Gargs, Rret);
3096 }
3099 void TemplateTable::invokespecial(int byte_no) {
3100 transition(vtos, vtos);
3101 assert(byte_no == f1_byte, "use this argument");
3103 const Register Rret = Lscratch;
3104 const Register O0_recv = O0;
3105 const Register Rscratch = G3_scratch;
3107 prepare_invoke(byte_no, G5_method, Rret, noreg, O0_recv); // get receiver also for null check
3108 __ null_check(O0_recv);
3110 // do the call
3111 __ profile_call(O4);
3112 __ profile_arguments_type(G5_method, Rscratch, Gargs, false);
3113 __ call_from_interpreter(Rscratch, Gargs, Rret);
3114 }
3117 void TemplateTable::invokestatic(int byte_no) {
3118 transition(vtos, vtos);
3119 assert(byte_no == f1_byte, "use this argument");
3121 const Register Rret = Lscratch;
3122 const Register Rscratch = G3_scratch;
3124 prepare_invoke(byte_no, G5_method, Rret); // get f1 Method*
3126 // do the call
3127 __ profile_call(O4);
3128 __ profile_arguments_type(G5_method, Rscratch, Gargs, false);
3129 __ call_from_interpreter(Rscratch, Gargs, Rret);
3130 }
3132 void TemplateTable::invokeinterface_object_method(Register RKlass,
3133 Register Rcall,
3134 Register Rret,
3135 Register Rflags) {
3136 Register Rscratch = G4_scratch;
3137 Register Rindex = Lscratch;
3139 assert_different_registers(Rscratch, Rindex, Rret);
3141 Label notFinal;
3143 // Check for vfinal
3144 __ set((1 << ConstantPoolCacheEntry::is_vfinal_shift), Rscratch);
3145 __ btst(Rflags, Rscratch);
3146 __ br(Assembler::zero, false, Assembler::pt, notFinal);
3147 __ delayed()->nop();
3149 __ profile_final_call(O4);
3151 // do the call - the index (f2) contains the Method*
3152 assert_different_registers(G5_method, Gargs, Rcall);
3153 __ mov(Rindex, G5_method);
3154 __ profile_arguments_type(G5_method, Rcall, Gargs, true);
3155 __ call_from_interpreter(Rcall, Gargs, Rret);
3156 __ bind(notFinal);
3158 __ profile_virtual_call(RKlass, O4);
3159 generate_vtable_call(RKlass, Rindex, Rret);
3160 }
3163 void TemplateTable::invokeinterface(int byte_no) {
3164 transition(vtos, vtos);
3165 assert(byte_no == f1_byte, "use this argument");
3167 const Register Rinterface = G1_scratch;
3168 const Register Rmethod = Lscratch;
3169 const Register Rret = G3_scratch;
3170 const Register O0_recv = O0;
3171 const Register O1_flags = O1;
3172 const Register O2_Klass = O2;
3173 const Register Rscratch = G4_scratch;
3174 assert_different_registers(Rscratch, G5_method);
3176 prepare_invoke(byte_no, Rinterface, Rret, Rmethod, O0_recv, O1_flags);
3178 // get receiver klass
3179 __ null_check(O0_recv, oopDesc::klass_offset_in_bytes());
3180 __ load_klass(O0_recv, O2_Klass);
3182 // Special case of invokeinterface called for virtual method of
3183 // java.lang.Object. See cpCacheOop.cpp for details.
3184 // This code isn't produced by javac, but could be produced by
3185 // another compliant java compiler.
3186 Label notMethod;
3187 __ set((1 << ConstantPoolCacheEntry::is_forced_virtual_shift), Rscratch);
3188 __ btst(O1_flags, Rscratch);
3189 __ br(Assembler::zero, false, Assembler::pt, notMethod);
3190 __ delayed()->nop();
3192 invokeinterface_object_method(O2_Klass, Rinterface, Rret, O1_flags);
3194 __ bind(notMethod);
3196 Register Rtemp = O1_flags;
3198 Label L_no_such_interface;
3200 // Receiver subtype check against REFC.
3201 __ lookup_interface_method(// inputs: rec. class, interface, itable index
3202 O2_Klass, Rinterface, noreg,
3203 // outputs: temp reg1, temp reg2, temp reg3
3204 G5_method, Rscratch, Rtemp,
3205 L_no_such_interface,
3206 /*return_method=*/false);
3208 __ profile_virtual_call(O2_Klass, O4);
3210 //
3211 // find entry point to call
3212 //
3214 // Get declaring interface class from method
3215 __ ld_ptr(Rmethod, Method::const_offset(), Rinterface);
3216 __ ld_ptr(Rinterface, ConstMethod::constants_offset(), Rinterface);
3217 __ ld_ptr(Rinterface, ConstantPool::pool_holder_offset_in_bytes(), Rinterface);
3219 // Get itable index from method
3220 const Register Rindex = G5_method;
3221 __ ld(Rmethod, Method::itable_index_offset(), Rindex);
3222 __ sub(Rindex, Method::itable_index_max, Rindex);
3223 __ neg(Rindex);
3225 __ lookup_interface_method(// inputs: rec. class, interface, itable index
3226 O2_Klass, Rinterface, Rindex,
3227 // outputs: method, scan temp reg, temp reg
3228 G5_method, Rscratch, Rtemp,
3229 L_no_such_interface);
3231 // Check for abstract method error.
3232 {
3233 Label ok;
3234 __ br_notnull_short(G5_method, Assembler::pt, ok);
3235 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
3236 __ should_not_reach_here();
3237 __ bind(ok);
3238 }
3240 Register Rcall = Rinterface;
3241 assert_different_registers(Rcall, G5_method, Gargs, Rret);
3243 __ profile_arguments_type(G5_method, Rcall, Gargs, true);
3244 __ call_from_interpreter(Rcall, Gargs, Rret);
3246 __ bind(L_no_such_interface);
3247 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_IncompatibleClassChangeError));
3248 __ should_not_reach_here();
3249 }
3251 void TemplateTable::invokehandle(int byte_no) {
3252 transition(vtos, vtos);
3253 assert(byte_no == f1_byte, "use this argument");
3255 if (!EnableInvokeDynamic) {
3256 // rewriter does not generate this bytecode
3257 __ should_not_reach_here();
3258 return;
3259 }
3261 const Register Rret = Lscratch;
3262 const Register G4_mtype = G4_scratch;
3263 const Register O0_recv = O0;
3264 const Register Rscratch = G3_scratch;
3266 prepare_invoke(byte_no, G5_method, Rret, G4_mtype, O0_recv);
3267 __ null_check(O0_recv);
3269 // G4: MethodType object (from cpool->resolved_references[f1], if necessary)
3270 // G5: MH.invokeExact_MT method (from f2)
3272 // Note: G4_mtype is already pushed (if necessary) by prepare_invoke
3274 // do the call
3275 __ verify_oop(G4_mtype);
3276 __ profile_final_call(O4); // FIXME: profile the LambdaForm also
3277 __ profile_arguments_type(G5_method, Rscratch, Gargs, true);
3278 __ call_from_interpreter(Rscratch, Gargs, Rret);
3279 }
3282 void TemplateTable::invokedynamic(int byte_no) {
3283 transition(vtos, vtos);
3284 assert(byte_no == f1_byte, "use this argument");
3286 if (!EnableInvokeDynamic) {
3287 // We should not encounter this bytecode if !EnableInvokeDynamic.
3288 // The verifier will stop it. However, if we get past the verifier,
3289 // this will stop the thread in a reasonable way, without crashing the JVM.
3290 __ call_VM(noreg, CAST_FROM_FN_PTR(address,
3291 InterpreterRuntime::throw_IncompatibleClassChangeError));
3292 // the call_VM checks for exception, so we should never return here.
3293 __ should_not_reach_here();
3294 return;
3295 }
3297 const Register Rret = Lscratch;
3298 const Register G4_callsite = G4_scratch;
3299 const Register Rscratch = G3_scratch;
3301 prepare_invoke(byte_no, G5_method, Rret, G4_callsite);
3303 // G4: CallSite object (from cpool->resolved_references[f1])
3304 // G5: MH.linkToCallSite method (from f2)
3306 // Note: G4_callsite is already pushed by prepare_invoke
3308 // %%% should make a type profile for any invokedynamic that takes a ref argument
3309 // profile this call
3310 __ profile_call(O4);
3312 // do the call
3313 __ verify_oop(G4_callsite);
3314 __ profile_arguments_type(G5_method, Rscratch, Gargs, false);
3315 __ call_from_interpreter(Rscratch, Gargs, Rret);
3316 }
3319 //----------------------------------------------------------------------------------------------------
3320 // Allocation
3322 void TemplateTable::_new() {
3323 transition(vtos, atos);
3325 Label slow_case;
3326 Label done;
3327 Label initialize_header;
3328 Label initialize_object; // including clearing the fields
3330 Register RallocatedObject = Otos_i;
3331 Register RinstanceKlass = O1;
3332 Register Roffset = O3;
3333 Register Rscratch = O4;
3335 __ get_2_byte_integer_at_bcp(1, Rscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3336 __ get_cpool_and_tags(Rscratch, G3_scratch);
3337 // make sure the class we're about to instantiate has been resolved
3338 // This is done before loading InstanceKlass to be consistent with the order
3339 // how Constant Pool is updated (see ConstantPool::klass_at_put)
3340 __ add(G3_scratch, Array<u1>::base_offset_in_bytes(), G3_scratch);
3341 __ ldub(G3_scratch, Roffset, G3_scratch);
3342 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3343 __ br(Assembler::notEqual, false, Assembler::pn, slow_case);
3344 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3345 // get InstanceKlass
3346 //__ sll(Roffset, LogBytesPerWord, Roffset); // executed in delay slot
3347 __ add(Roffset, sizeof(ConstantPool), Roffset);
3348 __ ld_ptr(Rscratch, Roffset, RinstanceKlass);
3350 // make sure klass is fully initialized:
3351 __ ldub(RinstanceKlass, in_bytes(InstanceKlass::init_state_offset()), G3_scratch);
3352 __ cmp(G3_scratch, InstanceKlass::fully_initialized);
3353 __ br(Assembler::notEqual, false, Assembler::pn, slow_case);
3354 __ delayed()->ld(RinstanceKlass, in_bytes(Klass::layout_helper_offset()), Roffset);
3356 // get instance_size in InstanceKlass (already aligned)
3357 //__ ld(RinstanceKlass, in_bytes(Klass::layout_helper_offset()), Roffset);
3359 // make sure klass does not have has_finalizer, or is abstract, or interface or java/lang/Class
3360 __ btst(Klass::_lh_instance_slow_path_bit, Roffset);
3361 __ br(Assembler::notZero, false, Assembler::pn, slow_case);
3362 __ delayed()->nop();
3364 // allocate the instance
3365 // 1) Try to allocate in the TLAB
3366 // 2) if fail, and the TLAB is not full enough to discard, allocate in the shared Eden
3367 // 3) if the above fails (or is not applicable), go to a slow case
3368 // (creates a new TLAB, etc.)
3370 const bool allow_shared_alloc =
3371 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode;
3373 if(UseTLAB) {
3374 Register RoldTopValue = RallocatedObject;
3375 Register RtlabWasteLimitValue = G3_scratch;
3376 Register RnewTopValue = G1_scratch;
3377 Register RendValue = Rscratch;
3378 Register RfreeValue = RnewTopValue;
3380 // check if we can allocate in the TLAB
3381 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), RoldTopValue); // sets up RalocatedObject
3382 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_end_offset()), RendValue);
3383 __ add(RoldTopValue, Roffset, RnewTopValue);
3385 // if there is enough space, we do not CAS and do not clear
3386 __ cmp(RnewTopValue, RendValue);
3387 if(ZeroTLAB) {
3388 // the fields have already been cleared
3389 __ brx(Assembler::lessEqualUnsigned, true, Assembler::pt, initialize_header);
3390 } else {
3391 // initialize both the header and fields
3392 __ brx(Assembler::lessEqualUnsigned, true, Assembler::pt, initialize_object);
3393 }
3394 __ delayed()->st_ptr(RnewTopValue, G2_thread, in_bytes(JavaThread::tlab_top_offset()));
3396 if (allow_shared_alloc) {
3397 // Check if tlab should be discarded (refill_waste_limit >= free)
3398 __ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()), RtlabWasteLimitValue);
3399 __ sub(RendValue, RoldTopValue, RfreeValue);
3400 #ifdef _LP64
3401 __ srlx(RfreeValue, LogHeapWordSize, RfreeValue);
3402 #else
3403 __ srl(RfreeValue, LogHeapWordSize, RfreeValue);
3404 #endif
3405 __ cmp_and_brx_short(RtlabWasteLimitValue, RfreeValue, Assembler::greaterEqualUnsigned, Assembler::pt, slow_case); // tlab waste is small
3407 // increment waste limit to prevent getting stuck on this slow path
3408 __ add(RtlabWasteLimitValue, ThreadLocalAllocBuffer::refill_waste_limit_increment(), RtlabWasteLimitValue);
3409 __ st_ptr(RtlabWasteLimitValue, G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()));
3410 } else {
3411 // No allocation in the shared eden.
3412 __ ba_short(slow_case);
3413 }
3414 }
3416 // Allocation in the shared Eden
3417 if (allow_shared_alloc) {
3418 Register RoldTopValue = G1_scratch;
3419 Register RtopAddr = G3_scratch;
3420 Register RnewTopValue = RallocatedObject;
3421 Register RendValue = Rscratch;
3423 __ set((intptr_t)Universe::heap()->top_addr(), RtopAddr);
3425 Label retry;
3426 __ bind(retry);
3427 __ set((intptr_t)Universe::heap()->end_addr(), RendValue);
3428 __ ld_ptr(RendValue, 0, RendValue);
3429 __ ld_ptr(RtopAddr, 0, RoldTopValue);
3430 __ add(RoldTopValue, Roffset, RnewTopValue);
3432 // RnewTopValue contains the top address after the new object
3433 // has been allocated.
3434 __ cmp_and_brx_short(RnewTopValue, RendValue, Assembler::greaterUnsigned, Assembler::pn, slow_case);
3436 __ cas_ptr(RtopAddr, RoldTopValue, RnewTopValue);
3438 // if someone beat us on the allocation, try again, otherwise continue
3439 __ cmp_and_brx_short(RoldTopValue, RnewTopValue, Assembler::notEqual, Assembler::pn, retry);
3441 // bump total bytes allocated by this thread
3442 // RoldTopValue and RtopAddr are dead, so can use G1 and G3
3443 __ incr_allocated_bytes(Roffset, G1_scratch, G3_scratch);
3444 }
3446 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {
3447 // clear object fields
3448 __ bind(initialize_object);
3449 __ deccc(Roffset, sizeof(oopDesc));
3450 __ br(Assembler::zero, false, Assembler::pt, initialize_header);
3451 __ delayed()->add(RallocatedObject, sizeof(oopDesc), G3_scratch);
3453 // initialize remaining object fields
3454 if (UseBlockZeroing) {
3455 // Use BIS for zeroing
3456 __ bis_zeroing(G3_scratch, Roffset, G1_scratch, initialize_header);
3457 } else {
3458 Label loop;
3459 __ subcc(Roffset, wordSize, Roffset);
3460 __ bind(loop);
3461 //__ subcc(Roffset, wordSize, Roffset); // executed above loop or in delay slot
3462 __ st_ptr(G0, G3_scratch, Roffset);
3463 __ br(Assembler::notEqual, false, Assembler::pt, loop);
3464 __ delayed()->subcc(Roffset, wordSize, Roffset);
3465 }
3466 __ ba_short(initialize_header);
3467 }
3469 // slow case
3470 __ bind(slow_case);
3471 __ get_2_byte_integer_at_bcp(1, G3_scratch, O2, InterpreterMacroAssembler::Unsigned);
3472 __ get_constant_pool(O1);
3474 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), O1, O2);
3476 __ ba_short(done);
3478 // Initialize the header: mark, klass
3479 __ bind(initialize_header);
3481 if (UseBiasedLocking) {
3482 __ ld_ptr(RinstanceKlass, in_bytes(Klass::prototype_header_offset()), G4_scratch);
3483 } else {
3484 __ set((intptr_t)markOopDesc::prototype(), G4_scratch);
3485 }
3486 __ st_ptr(G4_scratch, RallocatedObject, oopDesc::mark_offset_in_bytes()); // mark
3487 __ store_klass_gap(G0, RallocatedObject); // klass gap if compressed
3488 __ store_klass(RinstanceKlass, RallocatedObject); // klass (last for cms)
3490 {
3491 SkipIfEqual skip_if(
3492 _masm, G4_scratch, &DTraceAllocProbes, Assembler::zero);
3493 // Trigger dtrace event
3494 __ push(atos);
3495 __ call_VM_leaf(noreg,
3496 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), O0);
3497 __ pop(atos);
3498 }
3500 // continue
3501 __ bind(done);
3502 }
3506 void TemplateTable::newarray() {
3507 transition(itos, atos);
3508 __ ldub(Lbcp, 1, O1);
3509 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), O1, Otos_i);
3510 }
3513 void TemplateTable::anewarray() {
3514 transition(itos, atos);
3515 __ get_constant_pool(O1);
3516 __ get_2_byte_integer_at_bcp(1, G4_scratch, O2, InterpreterMacroAssembler::Unsigned);
3517 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), O1, O2, Otos_i);
3518 }
3521 void TemplateTable::arraylength() {
3522 transition(atos, itos);
3523 Label ok;
3524 __ verify_oop(Otos_i);
3525 __ tst(Otos_i);
3526 __ throw_if_not_1_x( Assembler::notZero, ok );
3527 __ delayed()->ld(Otos_i, arrayOopDesc::length_offset_in_bytes(), Otos_i);
3528 __ throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ok);
3529 }
3532 void TemplateTable::checkcast() {
3533 transition(atos, atos);
3534 Label done, is_null, quicked, cast_ok, resolved;
3535 Register Roffset = G1_scratch;
3536 Register RobjKlass = O5;
3537 Register RspecifiedKlass = O4;
3539 // Check for casting a NULL
3540 __ br_null_short(Otos_i, Assembler::pn, is_null);
3542 // Get value klass in RobjKlass
3543 __ load_klass(Otos_i, RobjKlass); // get value klass
3545 // Get constant pool tag
3546 __ get_2_byte_integer_at_bcp(1, Lscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3548 // See if the checkcast has been quickened
3549 __ get_cpool_and_tags(Lscratch, G3_scratch);
3550 __ add(G3_scratch, Array<u1>::base_offset_in_bytes(), G3_scratch);
3551 __ ldub(G3_scratch, Roffset, G3_scratch);
3552 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3553 __ br(Assembler::equal, true, Assembler::pt, quicked);
3554 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3556 __ push_ptr(); // save receiver for result, and for GC
3557 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
3558 __ get_vm_result_2(RspecifiedKlass);
3559 __ pop_ptr(Otos_i, G3_scratch); // restore receiver
3561 __ ba_short(resolved);
3563 // Extract target class from constant pool
3564 __ bind(quicked);
3565 __ add(Roffset, sizeof(ConstantPool), Roffset);
3566 __ ld_ptr(Lscratch, Roffset, RspecifiedKlass);
3567 __ bind(resolved);
3568 __ load_klass(Otos_i, RobjKlass); // get value klass
3570 // Generate a fast subtype check. Branch to cast_ok if no
3571 // failure. Throw exception if failure.
3572 __ gen_subtype_check( RobjKlass, RspecifiedKlass, G3_scratch, G4_scratch, G1_scratch, cast_ok );
3574 // Not a subtype; so must throw exception
3575 __ throw_if_not_x( Assembler::never, Interpreter::_throw_ClassCastException_entry, G3_scratch );
3577 __ bind(cast_ok);
3579 if (ProfileInterpreter) {
3580 __ ba_short(done);
3581 }
3582 __ bind(is_null);
3583 __ profile_null_seen(G3_scratch);
3584 __ bind(done);
3585 }
3588 void TemplateTable::instanceof() {
3589 Label done, is_null, quicked, resolved;
3590 transition(atos, itos);
3591 Register Roffset = G1_scratch;
3592 Register RobjKlass = O5;
3593 Register RspecifiedKlass = O4;
3595 // Check for casting a NULL
3596 __ br_null_short(Otos_i, Assembler::pt, is_null);
3598 // Get value klass in RobjKlass
3599 __ load_klass(Otos_i, RobjKlass); // get value klass
3601 // Get constant pool tag
3602 __ get_2_byte_integer_at_bcp(1, Lscratch, Roffset, InterpreterMacroAssembler::Unsigned);
3604 // See if the checkcast has been quickened
3605 __ get_cpool_and_tags(Lscratch, G3_scratch);
3606 __ add(G3_scratch, Array<u1>::base_offset_in_bytes(), G3_scratch);
3607 __ ldub(G3_scratch, Roffset, G3_scratch);
3608 __ cmp(G3_scratch, JVM_CONSTANT_Class);
3609 __ br(Assembler::equal, true, Assembler::pt, quicked);
3610 __ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
3612 __ push_ptr(); // save receiver for result, and for GC
3613 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
3614 __ get_vm_result_2(RspecifiedKlass);
3615 __ pop_ptr(Otos_i, G3_scratch); // restore receiver
3617 __ ba_short(resolved);
3619 // Extract target class from constant pool
3620 __ bind(quicked);
3621 __ add(Roffset, sizeof(ConstantPool), Roffset);
3622 __ get_constant_pool(Lscratch);
3623 __ ld_ptr(Lscratch, Roffset, RspecifiedKlass);
3624 __ bind(resolved);
3625 __ load_klass(Otos_i, RobjKlass); // get value klass
3627 // Generate a fast subtype check. Branch to cast_ok if no
3628 // failure. Return 0 if failure.
3629 __ or3(G0, 1, Otos_i); // set result assuming quick tests succeed
3630 __ gen_subtype_check( RobjKlass, RspecifiedKlass, G3_scratch, G4_scratch, G1_scratch, done );
3631 // Not a subtype; return 0;
3632 __ clr( Otos_i );
3634 if (ProfileInterpreter) {
3635 __ ba_short(done);
3636 }
3637 __ bind(is_null);
3638 __ profile_null_seen(G3_scratch);
3639 __ bind(done);
3640 }
3642 void TemplateTable::_breakpoint() {
3644 // Note: We get here even if we are single stepping..
3645 // jbug inists on setting breakpoints at every bytecode
3646 // even if we are in single step mode.
3648 transition(vtos, vtos);
3649 // get the unpatched byte code
3650 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), Lmethod, Lbcp);
3651 __ mov(O0, Lbyte_code);
3653 // post the breakpoint event
3654 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), Lmethod, Lbcp);
3656 // complete the execution of original bytecode
3657 __ dispatch_normal(vtos);
3658 }
3661 //----------------------------------------------------------------------------------------------------
3662 // Exceptions
3664 void TemplateTable::athrow() {
3665 transition(atos, vtos);
3667 // This works because exception is cached in Otos_i which is same as O0,
3668 // which is same as what throw_exception_entry_expects
3669 assert(Otos_i == Oexception, "see explanation above");
3671 __ verify_oop(Otos_i);
3672 __ null_check(Otos_i);
3673 __ throw_if_not_x(Assembler::never, Interpreter::throw_exception_entry(), G3_scratch);
3674 }
3677 //----------------------------------------------------------------------------------------------------
3678 // Synchronization
3681 // See frame_sparc.hpp for monitor block layout.
3682 // Monitor elements are dynamically allocated by growing stack as needed.
3684 void TemplateTable::monitorenter() {
3685 transition(atos, vtos);
3686 __ verify_oop(Otos_i);
3687 // Try to acquire a lock on the object
3688 // Repeat until succeeded (i.e., until
3689 // monitorenter returns true).
3691 { Label ok;
3692 __ tst(Otos_i);
3693 __ throw_if_not_1_x( Assembler::notZero, ok);
3694 __ delayed()->mov(Otos_i, Lscratch); // save obj
3695 __ throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ok);
3696 }
3698 assert(O0 == Otos_i, "Be sure where the object to lock is");
3700 // find a free slot in the monitor block
3703 // initialize entry pointer
3704 __ clr(O1); // points to free slot or NULL
3706 {
3707 Label entry, loop, exit;
3708 __ add( __ top_most_monitor(), O2 ); // last one to check
3709 __ ba( entry );
3710 __ delayed()->mov( Lmonitors, O3 ); // first one to check
3713 __ bind( loop );
3715 __ verify_oop(O4); // verify each monitor's oop
3716 __ tst(O4); // is this entry unused?
3717 __ movcc( Assembler::zero, false, Assembler::ptr_cc, O3, O1);
3719 __ cmp(O4, O0); // check if current entry is for same object
3720 __ brx( Assembler::equal, false, Assembler::pn, exit );
3721 __ delayed()->inc( O3, frame::interpreter_frame_monitor_size() * wordSize ); // check next one
3723 __ bind( entry );
3725 __ cmp( O3, O2 );
3726 __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, loop );
3727 __ delayed()->ld_ptr(O3, BasicObjectLock::obj_offset_in_bytes(), O4);
3729 __ bind( exit );
3730 }
3732 { Label allocated;
3734 // found free slot?
3735 __ br_notnull_short(O1, Assembler::pn, allocated);
3737 __ add_monitor_to_stack( false, O2, O3 );
3738 __ mov(Lmonitors, O1);
3740 __ bind(allocated);
3741 }
3743 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly.
3744 // The object has already been poped from the stack, so the expression stack looks correct.
3745 __ inc(Lbcp);
3747 __ st_ptr(O0, O1, BasicObjectLock::obj_offset_in_bytes()); // store object
3748 __ lock_object(O1, O0);
3750 // check if there's enough space on the stack for the monitors after locking
3751 __ generate_stack_overflow_check(0);
3753 // The bcp has already been incremented. Just need to dispatch to next instruction.
3754 __ dispatch_next(vtos);
3755 }
3758 void TemplateTable::monitorexit() {
3759 transition(atos, vtos);
3760 __ verify_oop(Otos_i);
3761 __ tst(Otos_i);
3762 __ throw_if_not_x( Assembler::notZero, Interpreter::_throw_NullPointerException_entry, G3_scratch );
3764 assert(O0 == Otos_i, "just checking");
3766 { Label entry, loop, found;
3767 __ add( __ top_most_monitor(), O2 ); // last one to check
3768 __ ba(entry);
3769 // use Lscratch to hold monitor elem to check, start with most recent monitor,
3770 // By using a local it survives the call to the C routine.
3771 __ delayed()->mov( Lmonitors, Lscratch );
3773 __ bind( loop );
3775 __ verify_oop(O4); // verify each monitor's oop
3776 __ cmp(O4, O0); // check if current entry is for desired object
3777 __ brx( Assembler::equal, true, Assembler::pt, found );
3778 __ delayed()->mov(Lscratch, O1); // pass found entry as argument to monitorexit
3780 __ inc( Lscratch, frame::interpreter_frame_monitor_size() * wordSize ); // advance to next
3782 __ bind( entry );
3784 __ cmp( Lscratch, O2 );
3785 __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, loop );
3786 __ delayed()->ld_ptr(Lscratch, BasicObjectLock::obj_offset_in_bytes(), O4);
3788 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
3789 __ should_not_reach_here();
3791 __ bind(found);
3792 }
3793 __ unlock_object(O1);
3794 }
3797 //----------------------------------------------------------------------------------------------------
3798 // Wide instructions
3800 void TemplateTable::wide() {
3801 transition(vtos, vtos);
3802 __ ldub(Lbcp, 1, G3_scratch);// get next bc
3803 __ sll(G3_scratch, LogBytesPerWord, G3_scratch);
3804 AddressLiteral ep(Interpreter::_wentry_point);
3805 __ set(ep, G4_scratch);
3806 __ ld_ptr(G4_scratch, G3_scratch, G3_scratch);
3807 __ jmp(G3_scratch, G0);
3808 __ delayed()->nop();
3809 // Note: the Lbcp increment step is part of the individual wide bytecode implementations
3810 }
3813 //----------------------------------------------------------------------------------------------------
3814 // Multi arrays
3816 void TemplateTable::multianewarray() {
3817 transition(vtos, atos);
3818 // put ndims * wordSize into Lscratch
3819 __ ldub( Lbcp, 3, Lscratch);
3820 __ sll( Lscratch, Interpreter::logStackElementSize, Lscratch);
3821 // Lesp points past last_dim, so set to O1 to first_dim address
3822 __ add( Lesp, Lscratch, O1);
3823 call_VM(Otos_i, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), O1);
3824 __ add( Lesp, Lscratch, Lesp); // pop all dimensions off the stack
3825 }
3826 #endif /* !CC_INTERP */
