BarrierSetC1
0 /*
1 * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
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0 /*
1 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
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514 public:
515 ArrayCopyStub(LIR_OpArrayCopy* op): _op(op) { }
516
517 LIR_Opr src() const { return _op->src(); }
518 LIR_Opr src_pos() const { return _op->src_pos(); }
519 LIR_Opr dst() const { return _op->dst(); }
520 LIR_Opr dst_pos() const { return _op->dst_pos(); }
521 LIR_Opr length() const { return _op->length(); }
522 LIR_Opr tmp() const { return _op->tmp(); }
523
524 virtual void emit_code(LIR_Assembler* e);
525 virtual CodeEmitInfo* info() const { return _op->info(); }
526 virtual void visit(LIR_OpVisitState* visitor) {
527 // don't pass in the code emit info since it's processed in the fast path
528 visitor->do_slow_case();
529 }
530 #ifndef PRODUCT
531 virtual void print_name(outputStream* out) const { out->print("ArrayCopyStub"); }
532 #endif // PRODUCT
533 };
534
535 //////////////////////////////////////////////////////////////////////////////////////////
536 #if INCLUDE_ALL_GCS
537
538 // Code stubs for Garbage-First barriers.
539 class G1PreBarrierStub: public CodeStub {
540 private:
541 bool _do_load;
542 LIR_Opr _addr;
543 LIR_Opr _pre_val;
544 LIR_PatchCode _patch_code;
545 CodeEmitInfo* _info;
546
547 public:
548 // Version that _does_ generate a load of the previous value from addr.
549 // addr (the address of the field to be read) must be a LIR_Address
550 // pre_val (a temporary register) must be a register;
551 G1PreBarrierStub(LIR_Opr addr, LIR_Opr pre_val, LIR_PatchCode patch_code, CodeEmitInfo* info) :
552 _addr(addr), _pre_val(pre_val), _do_load(true),
553 _patch_code(patch_code), _info(info)
554 {
555 assert(_pre_val->is_register(), "should be temporary register");
556 assert(_addr->is_address(), "should be the address of the field");
557 }
558
559 // Version that _does not_ generate load of the previous value; the
560 // previous value is assumed to have already been loaded into pre_val.
561 G1PreBarrierStub(LIR_Opr pre_val) :
562 _addr(LIR_OprFact::illegalOpr), _pre_val(pre_val), _do_load(false),
563 _patch_code(lir_patch_none), _info(NULL)
564 {
565 assert(_pre_val->is_register(), "should be a register");
566 }
567
568 LIR_Opr addr() const { return _addr; }
569 LIR_Opr pre_val() const { return _pre_val; }
570 LIR_PatchCode patch_code() const { return _patch_code; }
571 CodeEmitInfo* info() const { return _info; }
572 bool do_load() const { return _do_load; }
573
574 virtual void emit_code(LIR_Assembler* e);
575 virtual void visit(LIR_OpVisitState* visitor) {
576 if (_do_load) {
577 // don't pass in the code emit info since it's processed in the fast
578 // path
579 if (_info != NULL)
580 visitor->do_slow_case(_info);
581 else
582 visitor->do_slow_case();
583
584 visitor->do_input(_addr);
585 visitor->do_temp(_pre_val);
586 } else {
587 visitor->do_slow_case();
588 visitor->do_input(_pre_val);
589 }
590 }
591 #ifndef PRODUCT
592 virtual void print_name(outputStream* out) const { out->print("G1PreBarrierStub"); }
593 #endif // PRODUCT
594 };
595
596 class G1PostBarrierStub: public CodeStub {
597 private:
598 LIR_Opr _addr;
599 LIR_Opr _new_val;
600
601 public:
602 // addr (the address of the object head) and new_val must be registers.
603 G1PostBarrierStub(LIR_Opr addr, LIR_Opr new_val): _addr(addr), _new_val(new_val) { }
604
605 LIR_Opr addr() const { return _addr; }
606 LIR_Opr new_val() const { return _new_val; }
607
608 virtual void emit_code(LIR_Assembler* e);
609 virtual void visit(LIR_OpVisitState* visitor) {
610 // don't pass in the code emit info since it's processed in the fast path
611 visitor->do_slow_case();
612 visitor->do_input(_addr);
613 visitor->do_input(_new_val);
614 }
615 #ifndef PRODUCT
616 virtual void print_name(outputStream* out) const { out->print("G1PostBarrierStub"); }
617 #endif // PRODUCT
618 };
619
620 #endif // INCLUDE_ALL_GCS
621 //////////////////////////////////////////////////////////////////////////////////////////
622
623 #endif // SHARE_VM_C1_C1_CODESTUBS_HPP
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514 public:
515 ArrayCopyStub(LIR_OpArrayCopy* op): _op(op) { }
516
517 LIR_Opr src() const { return _op->src(); }
518 LIR_Opr src_pos() const { return _op->src_pos(); }
519 LIR_Opr dst() const { return _op->dst(); }
520 LIR_Opr dst_pos() const { return _op->dst_pos(); }
521 LIR_Opr length() const { return _op->length(); }
522 LIR_Opr tmp() const { return _op->tmp(); }
523
524 virtual void emit_code(LIR_Assembler* e);
525 virtual CodeEmitInfo* info() const { return _op->info(); }
526 virtual void visit(LIR_OpVisitState* visitor) {
527 // don't pass in the code emit info since it's processed in the fast path
528 visitor->do_slow_case();
529 }
530 #ifndef PRODUCT
531 virtual void print_name(outputStream* out) const { out->print("ArrayCopyStub"); }
532 #endif // PRODUCT
533 };
534
535 #endif // SHARE_VM_C1_C1_CODESTUBS_HPP
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