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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. | 
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without | 
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are | 
| 4 // met: | 4 // met: | 
| 5 // | 5 // | 
| 6 //     * Redistributions of source code must retain the above copyright | 6 //     * Redistributions of source code must retain the above copyright | 
| 7 //       notice, this list of conditions and the following disclaimer. | 7 //       notice, this list of conditions and the following disclaimer. | 
| 8 //     * Redistributions in binary form must reproduce the above | 8 //     * Redistributions in binary form must reproduce the above | 
| 9 //       copyright notice, this list of conditions and the following | 9 //       copyright notice, this list of conditions and the following | 
| 10 //       disclaimer in the documentation and/or other materials provided | 10 //       disclaimer in the documentation and/or other materials provided | 
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| 5019     __ CheckPageFlag(regs_.object(), | 5019     __ CheckPageFlag(regs_.object(), | 
| 5020                      regs_.scratch0(), | 5020                      regs_.scratch0(), | 
| 5021                      1 << MemoryChunk::SCAN_ON_SCAVENGE, | 5021                      1 << MemoryChunk::SCAN_ON_SCAVENGE, | 
| 5022                      ne, | 5022                      ne, | 
| 5023                      &dont_need_remembered_set); | 5023                      &dont_need_remembered_set); | 
| 5024 | 5024 | 
| 5025     // First notify the incremental marker if necessary, then update the | 5025     // First notify the incremental marker if necessary, then update the | 
| 5026     // remembered set. | 5026     // remembered set. | 
| 5027     CheckNeedsToInformIncrementalMarker( | 5027     CheckNeedsToInformIncrementalMarker( | 
| 5028         masm, kUpdateRememberedSetOnNoNeedToInformIncrementalMarker, mode); | 5028         masm, kUpdateRememberedSetOnNoNeedToInformIncrementalMarker, mode); | 
| 5029     InformIncrementalMarker(masm, mode); | 5029     InformIncrementalMarker(masm); | 
| 5030     regs_.Restore(masm); | 5030     regs_.Restore(masm); | 
| 5031     __ RememberedSetHelper(object_, | 5031     __ RememberedSetHelper(object_, | 
| 5032                            address_, | 5032                            address_, | 
| 5033                            value_, | 5033                            value_, | 
| 5034                            save_fp_regs_mode_, | 5034                            save_fp_regs_mode_, | 
| 5035                            MacroAssembler::kReturnAtEnd); | 5035                            MacroAssembler::kReturnAtEnd); | 
| 5036 | 5036 | 
| 5037     __ bind(&dont_need_remembered_set); | 5037     __ bind(&dont_need_remembered_set); | 
| 5038   } | 5038   } | 
| 5039 | 5039 | 
| 5040   CheckNeedsToInformIncrementalMarker( | 5040   CheckNeedsToInformIncrementalMarker( | 
| 5041       masm, kReturnOnNoNeedToInformIncrementalMarker, mode); | 5041       masm, kReturnOnNoNeedToInformIncrementalMarker, mode); | 
| 5042   InformIncrementalMarker(masm, mode); | 5042   InformIncrementalMarker(masm); | 
| 5043   regs_.Restore(masm); | 5043   regs_.Restore(masm); | 
| 5044   __ Ret(); | 5044   __ Ret(); | 
| 5045 } | 5045 } | 
| 5046 | 5046 | 
| 5047 | 5047 | 
| 5048 void RecordWriteStub::InformIncrementalMarker(MacroAssembler* masm, Mode mode) { | 5048 void RecordWriteStub::InformIncrementalMarker(MacroAssembler* masm) { | 
| 5049   regs_.SaveCallerSaveRegisters(masm, save_fp_regs_mode_); | 5049   regs_.SaveCallerSaveRegisters(masm, save_fp_regs_mode_); | 
| 5050   int argument_count = 3; | 5050   int argument_count = 3; | 
| 5051   __ PrepareCallCFunction(argument_count, regs_.scratch0()); | 5051   __ PrepareCallCFunction(argument_count, regs_.scratch0()); | 
| 5052   Register address = | 5052   Register address = | 
| 5053       a0.is(regs_.address()) ? regs_.scratch0() : regs_.address(); | 5053       a0.is(regs_.address()) ? regs_.scratch0() : regs_.address(); | 
| 5054   ASSERT(!address.is(regs_.object())); | 5054   ASSERT(!address.is(regs_.object())); | 
| 5055   ASSERT(!address.is(a0)); | 5055   ASSERT(!address.is(a0)); | 
| 5056   __ Move(address, regs_.address()); | 5056   __ Move(address, regs_.address()); | 
| 5057   __ Move(a0, regs_.object()); | 5057   __ Move(a0, regs_.object()); | 
| 5058   __ Move(a1, address); | 5058   __ Move(a1, address); | 
| 5059   __ li(a2, Operand(ExternalReference::isolate_address(masm->isolate()))); | 5059   __ li(a2, Operand(ExternalReference::isolate_address(masm->isolate()))); | 
| 5060 | 5060 | 
| 5061   AllowExternalCallThatCantCauseGC scope(masm); | 5061   AllowExternalCallThatCantCauseGC scope(masm); | 
| 5062   if (mode == INCREMENTAL_COMPACTION) { | 5062   __ CallCFunction( | 
| 5063     __ CallCFunction( | 5063       ExternalReference::incremental_marking_record_write_function( | 
| 5064         ExternalReference::incremental_evacuation_record_write_function( | 5064           masm->isolate()), | 
| 5065             masm->isolate()), | 5065       argument_count); | 
| 5066         argument_count); |  | 
| 5067   } else { |  | 
| 5068     ASSERT(mode == INCREMENTAL); |  | 
| 5069     __ CallCFunction( |  | 
| 5070         ExternalReference::incremental_marking_record_write_function( |  | 
| 5071             masm->isolate()), |  | 
| 5072         argument_count); |  | 
| 5073   } |  | 
| 5074   regs_.RestoreCallerSaveRegisters(masm, save_fp_regs_mode_); | 5066   regs_.RestoreCallerSaveRegisters(masm, save_fp_regs_mode_); | 
| 5075 } | 5067 } | 
| 5076 | 5068 | 
| 5077 | 5069 | 
| 5078 void RecordWriteStub::CheckNeedsToInformIncrementalMarker( | 5070 void RecordWriteStub::CheckNeedsToInformIncrementalMarker( | 
| 5079     MacroAssembler* masm, | 5071     MacroAssembler* masm, | 
| 5080     OnNoNeedToInformIncrementalMarker on_no_need, | 5072     OnNoNeedToInformIncrementalMarker on_no_need, | 
| 5081     Mode mode) { | 5073     Mode mode) { | 
| 5082   Label on_black; | 5074   Label on_black; | 
| 5083   Label need_incremental; | 5075   Label need_incremental; | 
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| 5760                               MemOperand(fp, 6 * kPointerSize), | 5752                               MemOperand(fp, 6 * kPointerSize), | 
| 5761                               NULL); | 5753                               NULL); | 
| 5762 } | 5754 } | 
| 5763 | 5755 | 
| 5764 | 5756 | 
| 5765 #undef __ | 5757 #undef __ | 
| 5766 | 5758 | 
| 5767 } }  // namespace v8::internal | 5759 } }  // namespace v8::internal | 
| 5768 | 5760 | 
| 5769 #endif  // V8_TARGET_ARCH_MIPS | 5761 #endif  // V8_TARGET_ARCH_MIPS | 
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