1 /*
2 * Copyright (c) 1999, 2013, 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 *
464 assert(pre_val()->is_register(), "Precondition.");
465 Register pre_val_reg = pre_val()->as_register();
466
467 if (do_load()) {
468 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/);
469 }
470
471 if (__ is_in_wdisp16_range(_continuation)) {
472 __ br_null(pre_val_reg, /*annul*/false, Assembler::pt, _continuation);
473 } else {
474 __ cmp(pre_val_reg, G0);
475 __ brx(Assembler::equal, false, Assembler::pn, _continuation);
476 }
477 __ delayed()->nop();
478
479 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
480 __ delayed()->mov(pre_val_reg, G4);
481 __ br(Assembler::always, false, Assembler::pt, _continuation);
482 __ delayed()->nop();
483
484 }
485
486 jbyte* G1PostBarrierStub::_byte_map_base = NULL;
487
488 jbyte* G1PostBarrierStub::byte_map_base_slow() {
489 BarrierSet* bs = Universe::heap()->barrier_set();
490 assert(bs->is_a(BarrierSet::G1SATBCTLogging),
491 "Must be if we're using this.");
492 return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
493 }
494
495 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
496 __ bind(_entry);
497
498 assert(addr()->is_register(), "Precondition.");
499 assert(new_val()->is_register(), "Precondition.");
500 Register addr_reg = addr()->as_pointer_register();
501 Register new_val_reg = new_val()->as_register();
502
503 if (__ is_in_wdisp16_range(_continuation)) {
504 __ br_null(new_val_reg, /*annul*/false, Assembler::pt, _continuation);
505 } else {
506 __ cmp(new_val_reg, G0);
507 __ brx(Assembler::equal, false, Assembler::pn, _continuation);
508 }
509 __ delayed()->nop();
510
511 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
512 __ delayed()->mov(addr_reg, G4);
|
1 /*
2 * Copyright (c) 1999, 2015, 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 *
464 assert(pre_val()->is_register(), "Precondition.");
465 Register pre_val_reg = pre_val()->as_register();
466
467 if (do_load()) {
468 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/);
469 }
470
471 if (__ is_in_wdisp16_range(_continuation)) {
472 __ br_null(pre_val_reg, /*annul*/false, Assembler::pt, _continuation);
473 } else {
474 __ cmp(pre_val_reg, G0);
475 __ brx(Assembler::equal, false, Assembler::pn, _continuation);
476 }
477 __ delayed()->nop();
478
479 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
480 __ delayed()->mov(pre_val_reg, G4);
481 __ br(Assembler::always, false, Assembler::pt, _continuation);
482 __ delayed()->nop();
483
484 }
485
486 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
487 __ bind(_entry);
488
489 assert(addr()->is_register(), "Precondition.");
490 assert(new_val()->is_register(), "Precondition.");
491 Register addr_reg = addr()->as_pointer_register();
492 Register new_val_reg = new_val()->as_register();
493
494 if (__ is_in_wdisp16_range(_continuation)) {
495 __ br_null(new_val_reg, /*annul*/false, Assembler::pt, _continuation);
496 } else {
497 __ cmp(new_val_reg, G0);
498 __ brx(Assembler::equal, false, Assembler::pn, _continuation);
499 }
500 __ delayed()->nop();
501
502 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
503 __ delayed()->mov(addr_reg, G4);
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