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  */
  24 
  25 #include "precompiled.hpp"
  26 #include "asm/macroAssembler.inline.hpp"
  27 #include "c1/c1_LIRAssembler.hpp"
  28 #include "c1/c1_MacroAssembler.hpp"
  29 #include "gc/g1/c1/g1BarrierSetC1.hpp"
  30 #include "gc/g1/g1BarrierSet.hpp"
  31 #include "gc/g1/g1BarrierSetAssembler.hpp"
  32 #include "gc/g1/g1BarrierSetRuntime.hpp"
  33 #include "gc/g1/g1CardTable.hpp"
  34 #include "gc/g1/g1ThreadLocalData.hpp"
  35 #include "gc/g1/heapRegion.hpp"
  36 #include "gc/shared/collectedHeap.hpp"
  37 #include "runtime/sharedRuntime.hpp"
  38 #include "runtime/thread.hpp"
  39 #include "interpreter/interp_masm.hpp"
  40 #include "runtime/sharedRuntime.hpp"





  41 
  42 #define __ masm->
  43 
  44 void G1BarrierSetAssembler::gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
  45                                                             Register addr, Register count, RegSet saved_regs) {
  46   bool dest_uninitialized = (decorators & IS_DEST_UNINITIALIZED) != 0;
  47   if (!dest_uninitialized) {
  48     __ push(saved_regs, sp);
  49     if (count == c_rarg0) {
  50       if (addr == c_rarg1) {
  51         // exactly backwards!!
  52         __ mov(rscratch1, c_rarg0);
  53         __ mov(c_rarg0, c_rarg1);
  54         __ mov(c_rarg1, rscratch1);
  55       } else {
  56         __ mov(c_rarg1, count);
  57         __ mov(c_rarg0, addr);
  58       }
  59     } else {
  60       __ mov(c_rarg0, addr);

   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  */
  24 
  25 #include "precompiled.hpp"
  26 #include "asm/macroAssembler.inline.hpp"



  27 #include "gc/g1/g1BarrierSet.hpp"
  28 #include "gc/g1/g1BarrierSetAssembler.hpp"
  29 #include "gc/g1/g1BarrierSetRuntime.hpp"
  30 #include "gc/g1/g1CardTable.hpp"
  31 #include "gc/g1/g1ThreadLocalData.hpp"
  32 #include "gc/g1/heapRegion.hpp"
  33 #include "gc/shared/collectedHeap.hpp"
  34 #include "runtime/sharedRuntime.hpp"
  35 #include "runtime/thread.hpp"
  36 #include "interpreter/interp_masm.hpp"
  37 #include "runtime/sharedRuntime.hpp"
  38 #ifdef COMPILER1
  39 #include "c1/c1_LIRAssembler.hpp"
  40 #include "c1/c1_MacroAssembler.hpp"
  41 #include "gc/g1/c1/g1BarrierSetC1.hpp"
  42 #endif
  43 
  44 #define __ masm->
  45 
  46 void G1BarrierSetAssembler::gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
  47                                                             Register addr, Register count, RegSet saved_regs) {
  48   bool dest_uninitialized = (decorators & IS_DEST_UNINITIALIZED) != 0;
  49   if (!dest_uninitialized) {
  50     __ push(saved_regs, sp);
  51     if (count == c_rarg0) {
  52       if (addr == c_rarg1) {
  53         // exactly backwards!!
  54         __ mov(rscratch1, c_rarg0);
  55         __ mov(c_rarg0, c_rarg1);
  56         __ mov(c_rarg1, rscratch1);
  57       } else {
  58         __ mov(c_rarg1, count);
  59         __ mov(c_rarg0, addr);
  60       }
  61     } else {
  62       __ mov(c_rarg0, addr);