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.
21 *
22 */
23
24 #include "precompiled.hpp"
25 #include "asm/macroAssembler.inline.hpp"
26 #include "gc/shared/barrierSet.hpp"
27 #include "gc/shared/cardTable.hpp"
28 #include "gc/shared/cardTableBarrierSet.hpp"
29 #include "gc/shared/cardTableModRefBSCodeGen.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "runtime/globals.hpp"
32
33 #define __ masm->
34
35 #ifdef PRODUCT
36 #define BLOCK_COMMENT(str) /* nothing */
37 #else
38 #define BLOCK_COMMENT(str) __ block_comment(str)
39 #endif
40
41 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
42
43 void CardTableModRefBSCodeGen::gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
44 Register addr, Register count, Register tmp) {
45 BLOCK_COMMENT("CardTablePostBarrier");
46 CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
47 CardTable* ct = ctbs->card_table();
48 assert(sizeof(*ct->byte_map_base()) == sizeof(jbyte), "adjust this code");
49
50 Label L_cardtable_loop, L_done;
51
52 __ cbz_32(count, L_done); // zero count - nothing to do
53
54 __ add_ptr_scaled_int32(count, addr, count, LogBytesPerHeapOop);
55 __ sub(count, count, BytesPerHeapOop); // last addr
56
57 __ logical_shift_right(addr, addr, CardTable::card_shift);
58 __ logical_shift_right(count, count, CardTable::card_shift);
59 __ sub(count, count, addr); // nb of cards
60
61 // warning: Rthread has not been preserved
62 __ mov_address(tmp, (address) ct->byte_map_base(), symbolic_Relocation::card_table_reference);
63 __ add(addr,tmp, addr);
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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.
21 *
22 */
23
24 #include "precompiled.hpp"
25 #include "asm/macroAssembler.inline.hpp"
26 #include "gc/shared/barrierSet.hpp"
27 #include "gc/shared/cardTable.hpp"
28 #include "gc/shared/cardTableBarrierSet.hpp"
29 #include "gc/shared/cardTableBarrierSetAssembler.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "runtime/globals.hpp"
32
33 #define __ masm->
34
35 #ifdef PRODUCT
36 #define BLOCK_COMMENT(str) /* nothing */
37 #else
38 #define BLOCK_COMMENT(str) __ block_comment(str)
39 #endif
40
41 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
42
43 void CardTableBarrierSetAssembler::gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
44 Register addr, Register count, Register tmp) {
45 BLOCK_COMMENT("CardTablePostBarrier");
46 CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
47 CardTable* ct = ctbs->card_table();
48 assert(sizeof(*ct->byte_map_base()) == sizeof(jbyte), "adjust this code");
49
50 Label L_cardtable_loop, L_done;
51
52 __ cbz_32(count, L_done); // zero count - nothing to do
53
54 __ add_ptr_scaled_int32(count, addr, count, LogBytesPerHeapOop);
55 __ sub(count, count, BytesPerHeapOop); // last addr
56
57 __ logical_shift_right(addr, addr, CardTable::card_shift);
58 __ logical_shift_right(count, count, CardTable::card_shift);
59 __ sub(count, count, addr); // nb of cards
60
61 // warning: Rthread has not been preserved
62 __ mov_address(tmp, (address) ct->byte_map_base(), symbolic_Relocation::card_table_reference);
63 __ add(addr,tmp, addr);
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