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| 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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| 157 Register dst, Register src, | 157 Register dst, Register src, |
| 158 JSObject* holder, int index) { | 158 JSObject* holder, int index) { |
| 159 // Adjust for the number of properties stored in the holder. | 159 // Adjust for the number of properties stored in the holder. |
| 160 index -= holder->map()->inobject_properties(); | 160 index -= holder->map()->inobject_properties(); |
| 161 if (index < 0) { | 161 if (index < 0) { |
| 162 // Get the property straight out of the holder. | 162 // Get the property straight out of the holder. |
| 163 int offset = holder->map()->instance_size() + (index * kPointerSize); | 163 int offset = holder->map()->instance_size() + (index * kPointerSize); |
| 164 __ ldr(dst, FieldMemOperand(src, offset)); | 164 __ ldr(dst, FieldMemOperand(src, offset)); |
| 165 } else { | 165 } else { |
| 166 // Calculate the offset into the properties array. | 166 // Calculate the offset into the properties array. |
| 167 int offset = index * kPointerSize + Array::kHeaderSize; | 167 int offset = index * kPointerSize + FixedArray::kHeaderSize; |
| 168 __ ldr(dst, FieldMemOperand(src, JSObject::kPropertiesOffset)); | 168 __ ldr(dst, FieldMemOperand(src, JSObject::kPropertiesOffset)); |
| 169 __ ldr(dst, FieldMemOperand(dst, offset)); | 169 __ ldr(dst, FieldMemOperand(dst, offset)); |
| 170 } | 170 } |
| 171 } | 171 } |
| 172 | 172 |
| 173 | 173 |
| 174 void StubCompiler::GenerateLoadArrayLength(MacroAssembler* masm, | 174 void StubCompiler::GenerateLoadArrayLength(MacroAssembler* masm, |
| 175 Register receiver, | 175 Register receiver, |
| 176 Register scratch, | 176 Register scratch, |
| 177 Label* miss_label) { | 177 Label* miss_label) { |
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| 323 // Skip updating write barrier if storing a smi. | 323 // Skip updating write barrier if storing a smi. |
| 324 __ tst(r0, Operand(kSmiTagMask)); | 324 __ tst(r0, Operand(kSmiTagMask)); |
| 325 __ b(eq, &exit); | 325 __ b(eq, &exit); |
| 326 | 326 |
| 327 // Update the write barrier for the array address. | 327 // Update the write barrier for the array address. |
| 328 // Pass the value being stored in the now unused name_reg. | 328 // Pass the value being stored in the now unused name_reg. |
| 329 __ mov(name_reg, Operand(offset)); | 329 __ mov(name_reg, Operand(offset)); |
| 330 __ RecordWrite(receiver_reg, name_reg, scratch); | 330 __ RecordWrite(receiver_reg, name_reg, scratch); |
| 331 } else { | 331 } else { |
| 332 // Write to the properties array. | 332 // Write to the properties array. |
| 333 int offset = index * kPointerSize + Array::kHeaderSize; | 333 int offset = index * kPointerSize + FixedArray::kHeaderSize; |
| 334 // Get the properties array | 334 // Get the properties array |
| 335 __ ldr(scratch, FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset)); | 335 __ ldr(scratch, FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset)); |
| 336 __ str(r0, FieldMemOperand(scratch, offset)); | 336 __ str(r0, FieldMemOperand(scratch, offset)); |
| 337 | 337 |
| 338 // Skip updating write barrier if storing a smi. | 338 // Skip updating write barrier if storing a smi. |
| 339 __ tst(r0, Operand(kSmiTagMask)); | 339 __ tst(r0, Operand(kSmiTagMask)); |
| 340 __ b(eq, &exit); | 340 __ b(eq, &exit); |
| 341 | 341 |
| 342 // Update the write barrier for the array address. | 342 // Update the write barrier for the array address. |
| 343 // Ok to clobber receiver_reg and name_reg, since we return. | 343 // Ok to clobber receiver_reg and name_reg, since we return. |
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| 1328 __ Jump(ic, RelocInfo::CODE_TARGET); | 1328 __ Jump(ic, RelocInfo::CODE_TARGET); |
| 1329 | 1329 |
| 1330 // Return the generated code. | 1330 // Return the generated code. |
| 1331 return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); | 1331 return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); |
| 1332 } | 1332 } |
| 1333 | 1333 |
| 1334 | 1334 |
| 1335 #undef __ | 1335 #undef __ |
| 1336 | 1336 |
| 1337 } } // namespace v8::internal | 1337 } } // namespace v8::internal |
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