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Issue 886503002: Extract LoadAccessor into a masm function. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix whitespace Created 5 years, 10 months ago
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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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include <limits.h> // For LONG_MIN, LONG_MAX. 5 #include <limits.h> // For LONG_MIN, LONG_MAX.
6 6
7 #include "src/v8.h" 7 #include "src/v8.h"
8 8
9 #if V8_TARGET_ARCH_MIPS 9 #if V8_TARGET_ARCH_MIPS
10 10
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5877 5877
5878 5878
5879 void MacroAssembler::EnumLength(Register dst, Register map) { 5879 void MacroAssembler::EnumLength(Register dst, Register map) {
5880 STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); 5880 STATIC_ASSERT(Map::EnumLengthBits::kShift == 0);
5881 lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); 5881 lw(dst, FieldMemOperand(map, Map::kBitField3Offset));
5882 And(dst, dst, Operand(Map::EnumLengthBits::kMask)); 5882 And(dst, dst, Operand(Map::EnumLengthBits::kMask));
5883 SmiTag(dst); 5883 SmiTag(dst);
5884 } 5884 }
5885 5885
5886 5886
5887 void MacroAssembler::LoadAccessor(Register dst, Register holder,
5888 int accessor_index,
5889 AccessorComponent accessor) {
5890 lw(dst, FieldMemOperand(holder, HeapObject::kMapOffset));
5891 LoadInstanceDescriptors(dst, dst);
5892 lw(dst,
5893 FieldMemOperand(dst, DescriptorArray::GetValueOffset(accessor_index)));
5894 int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset
5895 : AccessorPair::kSetterOffset;
5896 lw(dst, FieldMemOperand(dst, offset));
5897 }
5898
5899
5887 void MacroAssembler::CheckEnumCache(Register null_value, Label* call_runtime) { 5900 void MacroAssembler::CheckEnumCache(Register null_value, Label* call_runtime) {
5888 Register empty_fixed_array_value = t2; 5901 Register empty_fixed_array_value = t2;
5889 LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); 5902 LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex);
5890 Label next, start; 5903 Label next, start;
5891 mov(a2, a0); 5904 mov(a2, a0);
5892 5905
5893 // Check if the enum length field is properly initialized, indicating that 5906 // Check if the enum length field is properly initialized, indicating that
5894 // there is an enum cache. 5907 // there is an enum cache.
5895 lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); 5908 lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset));
5896 5909
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6144 } 6157 }
6145 if (mag.shift > 0) sra(result, result, mag.shift); 6158 if (mag.shift > 0) sra(result, result, mag.shift);
6146 srl(at, dividend, 31); 6159 srl(at, dividend, 31);
6147 Addu(result, result, Operand(at)); 6160 Addu(result, result, Operand(at));
6148 } 6161 }
6149 6162
6150 6163
6151 } } // namespace v8::internal 6164 } } // namespace v8::internal
6152 6165
6153 #endif // V8_TARGET_ARCH_MIPS 6166 #endif // V8_TARGET_ARCH_MIPS
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