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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "vm/globals.h" | 5 #include "vm/globals.h" |
| 6 #if defined(TARGET_ARCH_MIPS) | 6 #if defined(TARGET_ARCH_MIPS) |
| 7 | 7 |
| 8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
| 9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
| 10 #include "vm/compiler.h" | 10 #include "vm/compiler.h" |
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| 755 __ StoreIntoObjectNoBarrier( | 755 __ StoreIntoObjectNoBarrier( |
| 756 V0, | 756 V0, |
| 757 FieldAddress(V0, Array::length_offset()), | 757 FieldAddress(V0, Array::length_offset()), |
| 758 A1); | 758 A1); |
| 759 | 759 |
| 760 // Calculate the size tag. | 760 // Calculate the size tag. |
| 761 // V0: new object start as a tagged pointer. | 761 // V0: new object start as a tagged pointer. |
| 762 // A1: Array length as Smi. | 762 // A1: Array length as Smi. |
| 763 // T2: new object end address. | 763 // T2: new object end address. |
| 764 // T3: array size. | 764 // T3: array size. |
| 765 const intptr_t shift = RawObject::kSizeTagBit - kObjectAlignmentLog2; | 765 const intptr_t shift = RawObject::kSizeTagPos - kObjectAlignmentLog2; |
| 766 // If no size tag overflow, shift T3 left, else set T3 to zero. | 766 // If no size tag overflow, shift T3 left, else set T3 to zero. |
| 767 __ LoadImmediate(T4, RawObject::SizeTag::kMaxSizeTag); | 767 __ LoadImmediate(T4, RawObject::SizeTag::kMaxSizeTag); |
| 768 __ sltu(CMPRES1, T4, T3); // CMPRES1 = T4 < T3 ? 1 : 0 | 768 __ sltu(CMPRES1, T4, T3); // CMPRES1 = T4 < T3 ? 1 : 0 |
| 769 __ sll(TMP, T3, shift); // TMP = T3 << shift; | 769 __ sll(TMP, T3, shift); // TMP = T3 << shift; |
| 770 __ movz(T3, TMP, CMPRES1); // T3 = T4 >= T3 ? 0 : T3 | 770 __ movz(T3, TMP, CMPRES1); // T3 = T4 >= T3 ? 0 : T3 |
| 771 __ movn(T3, ZR, CMPRES1); // T3 = T4 < T3 ? TMP : T3 | 771 __ movn(T3, ZR, CMPRES1); // T3 = T4 < T3 ? TMP : T3 |
| 772 | 772 |
| 773 // Get the class index and insert it into the tags. | 773 // Get the class index and insert it into the tags. |
| 774 __ LoadImmediate(TMP, RawObject::ClassIdTag::encode(kArrayCid)); | 774 __ LoadImmediate(TMP, RawObject::ClassIdTag::encode(kArrayCid)); |
| 775 __ or_(T3, T3, TMP); | 775 __ or_(T3, T3, TMP); |
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| 1038 // T2: object size. | 1038 // T2: object size. |
| 1039 // T3: next object start. | 1039 // T3: next object start. |
| 1040 __ sw(T3, Address(T5, 0)); | 1040 __ sw(T3, Address(T5, 0)); |
| 1041 __ addiu(V0, V0, Immediate(kHeapObjectTag)); | 1041 __ addiu(V0, V0, Immediate(kHeapObjectTag)); |
| 1042 __ UpdateAllocationStatsWithSize(context_class.id(), T2, T5); | 1042 __ UpdateAllocationStatsWithSize(context_class.id(), T2, T5); |
| 1043 | 1043 |
| 1044 // Calculate the size tag. | 1044 // Calculate the size tag. |
| 1045 // V0: new object. | 1045 // V0: new object. |
| 1046 // T1: number of context variables. | 1046 // T1: number of context variables. |
| 1047 // T2: object size. | 1047 // T2: object size. |
| 1048 const intptr_t shift = RawObject::kSizeTagBit - kObjectAlignmentLog2; | 1048 const intptr_t shift = RawObject::kSizeTagPos - kObjectAlignmentLog2; |
| 1049 __ LoadImmediate(TMP, RawObject::SizeTag::kMaxSizeTag); | 1049 __ LoadImmediate(TMP, RawObject::SizeTag::kMaxSizeTag); |
| 1050 __ sltu(CMPRES1, TMP, T2); // CMPRES1 = T2 > TMP ? 1 : 0. | 1050 __ sltu(CMPRES1, TMP, T2); // CMPRES1 = T2 > TMP ? 1 : 0. |
| 1051 __ movn(T2, ZR, CMPRES1); // T2 = CMPRES1 != 0 ? 0 : T2. | 1051 __ movn(T2, ZR, CMPRES1); // T2 = CMPRES1 != 0 ? 0 : T2. |
| 1052 __ sll(TMP, T2, shift); // TMP = T2 << shift. | 1052 __ sll(TMP, T2, shift); // TMP = T2 << shift. |
| 1053 __ movz(T2, TMP, CMPRES1); // T2 = CMPRES1 == 0 ? TMP : T2. | 1053 __ movz(T2, TMP, CMPRES1); // T2 = CMPRES1 == 0 ? TMP : T2. |
| 1054 | 1054 |
| 1055 // Get the class index and insert it into the tags. | 1055 // Get the class index and insert it into the tags. |
| 1056 // T2: size and bit tags. | 1056 // T2: size and bit tags. |
| 1057 __ LoadImmediate(TMP, RawObject::ClassIdTag::encode(context_class.id())); | 1057 __ LoadImmediate(TMP, RawObject::ClassIdTag::encode(context_class.id())); |
| 1058 __ or_(T2, T2, TMP); | 1058 __ or_(T2, T2, TMP); |
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| 2101 const Register right = T0; | 2101 const Register right = T0; |
| 2102 __ lw(left, Address(SP, 1 * kWordSize)); | 2102 __ lw(left, Address(SP, 1 * kWordSize)); |
| 2103 __ lw(right, Address(SP, 0 * kWordSize)); | 2103 __ lw(right, Address(SP, 0 * kWordSize)); |
| 2104 GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp1, temp2); | 2104 GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp1, temp2); |
| 2105 __ Ret(); | 2105 __ Ret(); |
| 2106 } | 2106 } |
| 2107 | 2107 |
| 2108 } // namespace dart | 2108 } // namespace dart |
| 2109 | 2109 |
| 2110 #endif // defined TARGET_ARCH_MIPS | 2110 #endif // defined TARGET_ARCH_MIPS |
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