8199604_cardtablemodrefbs_rename
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/codeBuffer.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "compiler/disassembler.hpp"
29 #include "gc/shared/cardTable.hpp"
30 #include "gc/shared/collectedHeap.inline.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "gc/shared/cardTableModRefBS.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "memory/universe.hpp"
35 #include "oops/klass.inline.hpp"
36 #include "opto/compile.hpp"
37 #include "opto/intrinsicnode.hpp"
38 #include "opto/matcher.hpp"
39 #include "prims/methodHandles.hpp"
40 #include "registerSaver_s390.hpp"
41 #include "runtime/biasedLocking.hpp"
42 #include "runtime/icache.hpp"
43 #include "runtime/interfaceSupport.hpp"
44 #include "runtime/objectMonitor.hpp"
45 #include "runtime/os.hpp"
46 #include "runtime/safepoint.hpp"
47 #include "runtime/safepointMechanism.hpp"
48 #include "runtime/sharedRuntime.hpp"
49 #include "runtime/stubRoutines.hpp"
50 #include "utilities/events.hpp"
51 #include "utilities/macros.hpp"
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12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/codeBuffer.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "compiler/disassembler.hpp"
29 #include "gc/shared/cardTable.hpp"
30 #include "gc/shared/collectedHeap.inline.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "gc/shared/cardTableBarrierSet.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "memory/universe.hpp"
35 #include "oops/klass.inline.hpp"
36 #include "opto/compile.hpp"
37 #include "opto/intrinsicnode.hpp"
38 #include "opto/matcher.hpp"
39 #include "prims/methodHandles.hpp"
40 #include "registerSaver_s390.hpp"
41 #include "runtime/biasedLocking.hpp"
42 #include "runtime/icache.hpp"
43 #include "runtime/interfaceSupport.hpp"
44 #include "runtime/objectMonitor.hpp"
45 #include "runtime/os.hpp"
46 #include "runtime/safepoint.hpp"
47 #include "runtime/safepointMechanism.hpp"
48 #include "runtime/sharedRuntime.hpp"
49 #include "runtime/stubRoutines.hpp"
50 #include "utilities/events.hpp"
51 #include "utilities/macros.hpp"
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3487 load_and_test_long(temp, Address(currentHeader, OM_OFFSET_NO_MONITOR_VALUE_TAG(owner)));
3488 z_brne(done);
3489 load_and_test_long(temp, Address(currentHeader, OM_OFFSET_NO_MONITOR_VALUE_TAG(EntryList)));
3490 z_brne(done);
3491 load_and_test_long(temp, Address(currentHeader, OM_OFFSET_NO_MONITOR_VALUE_TAG(cxq)));
3492 z_brne(done);
3493 z_release();
3494 z_stg(temp/*=0*/, OM_OFFSET_NO_MONITOR_VALUE_TAG(owner), currentHeader);
3495 }
3496
3497 bind(done);
3498
3499 BLOCK_COMMENT("} compiler_fast_unlock_object");
3500 // flag == EQ indicates success
3501 // flag == NE indicates failure
3502 }
3503
3504 // Write to card table for modification at store_addr - register is destroyed afterwards.
3505 void MacroAssembler::card_write_barrier_post(Register store_addr, Register tmp) {
3506 BarrierSet* bs = Universe::heap()->barrier_set();
3507 CardTableModRefBS* ctbs = barrier_set_cast<CardTableModRefBS>(bs);
3508 CardTable* ct = ctbs->card_table();
3509 assert(bs->kind() == BarrierSet::CardTableModRef, "wrong barrier");
3510 assert_different_registers(store_addr, tmp);
3511 z_srlg(store_addr, store_addr, CardTable::card_shift);
3512 load_absolute_address(tmp, (address)ct->byte_map_base());
3513 z_agr(store_addr, tmp);
3514 z_mvi(0, store_addr, 0); // Store byte 0.
3515 }
3516
3517 void MacroAssembler::resolve_jobject(Register value, Register tmp1, Register tmp2) {
3518 NearLabel Ldone;
3519 z_ltgr(tmp1, value);
3520 z_bre(Ldone); // Use NULL result as-is.
3521
3522 z_nill(value, ~JNIHandles::weak_tag_mask);
3523 z_lg(value, 0, value); // Resolve (untagged) jobject.
3524
3525 #if INCLUDE_ALL_GCS
3526 if (UseG1GC) {
3527 NearLabel Lnot_weak;
3528 z_tmll(tmp1, JNIHandles::weak_tag_mask); // Test for jweak tag.
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3487 load_and_test_long(temp, Address(currentHeader, OM_OFFSET_NO_MONITOR_VALUE_TAG(owner)));
3488 z_brne(done);
3489 load_and_test_long(temp, Address(currentHeader, OM_OFFSET_NO_MONITOR_VALUE_TAG(EntryList)));
3490 z_brne(done);
3491 load_and_test_long(temp, Address(currentHeader, OM_OFFSET_NO_MONITOR_VALUE_TAG(cxq)));
3492 z_brne(done);
3493 z_release();
3494 z_stg(temp/*=0*/, OM_OFFSET_NO_MONITOR_VALUE_TAG(owner), currentHeader);
3495 }
3496
3497 bind(done);
3498
3499 BLOCK_COMMENT("} compiler_fast_unlock_object");
3500 // flag == EQ indicates success
3501 // flag == NE indicates failure
3502 }
3503
3504 // Write to card table for modification at store_addr - register is destroyed afterwards.
3505 void MacroAssembler::card_write_barrier_post(Register store_addr, Register tmp) {
3506 BarrierSet* bs = Universe::heap()->barrier_set();
3507 CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
3508 CardTable* ct = ctbs->card_table();
3509 assert(bs->kind() == BarrierSet::CardTableBarrierSet, "wrong barrier");
3510 assert_different_registers(store_addr, tmp);
3511 z_srlg(store_addr, store_addr, CardTable::card_shift);
3512 load_absolute_address(tmp, (address)ct->byte_map_base());
3513 z_agr(store_addr, tmp);
3514 z_mvi(0, store_addr, 0); // Store byte 0.
3515 }
3516
3517 void MacroAssembler::resolve_jobject(Register value, Register tmp1, Register tmp2) {
3518 NearLabel Ldone;
3519 z_ltgr(tmp1, value);
3520 z_bre(Ldone); // Use NULL result as-is.
3521
3522 z_nill(value, ~JNIHandles::weak_tag_mask);
3523 z_lg(value, 0, value); // Resolve (untagged) jobject.
3524
3525 #if INCLUDE_ALL_GCS
3526 if (UseG1GC) {
3527 NearLabel Lnot_weak;
3528 z_tmll(tmp1, JNIHandles::weak_tag_mask); // Test for jweak tag.
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