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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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5398 // v0: JSArray, tagged. | 5398 // v0: JSArray, tagged. |
5399 // a3: FixedArray, tagged. | 5399 // a3: FixedArray, tagged. |
5400 // t1: Number of elements in array, untagged. | 5400 // t1: Number of elements in array, untagged. |
5401 | 5401 |
5402 // Set map. | 5402 // Set map. |
5403 __ li(a2, Operand(masm->isolate()->factory()->fixed_array_map())); | 5403 __ li(a2, Operand(masm->isolate()->factory()->fixed_array_map())); |
5404 __ sw(a2, FieldMemOperand(a3, HeapObject::kMapOffset)); | 5404 __ sw(a2, FieldMemOperand(a3, HeapObject::kMapOffset)); |
5405 // Set FixedArray length. | 5405 // Set FixedArray length. |
5406 __ sll(t2, t1, kSmiTagSize); | 5406 __ sll(t2, t1, kSmiTagSize); |
5407 __ sw(t2, FieldMemOperand(a3, FixedArray::kLengthOffset)); | 5407 __ sw(t2, FieldMemOperand(a3, FixedArray::kLengthOffset)); |
5408 // Fill contents of fixed-array with undefined. | 5408 // Fill contents of fixed-array with the-hole. |
5409 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); | 5409 __ li(a2, Operand(masm->isolate()->factory()->the_hole_value())); |
5410 __ Addu(a3, a3, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | 5410 __ Addu(a3, a3, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
5411 // Fill fixed array elements with undefined. | 5411 // Fill fixed array elements with hole. |
5412 // v0: JSArray, tagged. | 5412 // v0: JSArray, tagged. |
5413 // a2: undefined. | 5413 // a2: the hole. |
5414 // a3: Start of elements in FixedArray. | 5414 // a3: Start of elements in FixedArray. |
5415 // t1: Number of elements to fill. | 5415 // t1: Number of elements to fill. |
5416 Label loop; | 5416 Label loop; |
5417 __ sll(t1, t1, kPointerSizeLog2); // Convert num elements to num bytes. | 5417 __ sll(t1, t1, kPointerSizeLog2); // Convert num elements to num bytes. |
5418 __ addu(t1, t1, a3); // Point past last element to store. | 5418 __ addu(t1, t1, a3); // Point past last element to store. |
5419 __ bind(&loop); | 5419 __ bind(&loop); |
5420 __ Branch(&done, ge, a3, Operand(t1)); // Break when a3 past end of elem. | 5420 __ Branch(&done, ge, a3, Operand(t1)); // Break when a3 past end of elem. |
5421 __ sw(a2, MemOperand(a3)); | 5421 __ sw(a2, MemOperand(a3)); |
5422 __ Branch(&loop, USE_DELAY_SLOT); | 5422 __ Branch(&loop, USE_DELAY_SLOT); |
5423 __ addiu(a3, a3, kPointerSize); // In branch delay slot. | 5423 __ addiu(a3, a3, kPointerSize); // In branch delay slot. |
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7505 RecordWriteStub stub(entry->object, | 7505 RecordWriteStub stub(entry->object, |
7506 entry->value, | 7506 entry->value, |
7507 entry->address, | 7507 entry->address, |
7508 entry->action, | 7508 entry->action, |
7509 kDontSaveFPRegs); | 7509 kDontSaveFPRegs); |
7510 stub.GetCode()->set_is_pregenerated(true); | 7510 stub.GetCode()->set_is_pregenerated(true); |
7511 } | 7511 } |
7512 } | 7512 } |
7513 | 7513 |
7514 | 7514 |
7515 bool CodeStub::CanUseFPRegisters() { | |
7516 return CpuFeatures::IsSupported(FPU); | |
7517 } | |
7518 | |
7519 | |
7520 // Takes the input in 3 registers: address_ value_ and object_. A pointer to | 7515 // Takes the input in 3 registers: address_ value_ and object_. A pointer to |
7521 // the value has just been written into the object, now this stub makes sure | 7516 // the value has just been written into the object, now this stub makes sure |
7522 // we keep the GC informed. The word in the object where the value has been | 7517 // we keep the GC informed. The word in the object where the value has been |
7523 // written is in the address register. | 7518 // written is in the address register. |
7524 void RecordWriteStub::Generate(MacroAssembler* masm) { | 7519 void RecordWriteStub::Generate(MacroAssembler* masm) { |
7525 Label skip_to_incremental_noncompacting; | 7520 Label skip_to_incremental_noncompacting; |
7526 Label skip_to_incremental_compacting; | 7521 Label skip_to_incremental_compacting; |
7527 | 7522 |
7528 // The first two branch+nop instructions are generated with labels so as to | 7523 // The first two branch+nop instructions are generated with labels so as to |
7529 // get the offset fixed up correctly by the bind(Label*) call. We patch it | 7524 // get the offset fixed up correctly by the bind(Label*) call. We patch it |
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7831 __ Pop(ra, t1, a1); | 7826 __ Pop(ra, t1, a1); |
7832 __ Ret(); | 7827 __ Ret(); |
7833 } | 7828 } |
7834 | 7829 |
7835 | 7830 |
7836 #undef __ | 7831 #undef __ |
7837 | 7832 |
7838 } } // namespace v8::internal | 7833 } } // namespace v8::internal |
7839 | 7834 |
7840 #endif // V8_TARGET_ARCH_MIPS | 7835 #endif // V8_TARGET_ARCH_MIPS |
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