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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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132 Isolate* isolate, | 132 Isolate* isolate, |
133 CodeStubInterfaceDescriptor* descriptor) { | 133 CodeStubInterfaceDescriptor* descriptor) { |
134 static Register registers[] = { edx, ecx }; | 134 static Register registers[] = { edx, ecx }; |
135 descriptor->register_param_count_ = 2; | 135 descriptor->register_param_count_ = 2; |
136 descriptor->register_params_ = registers; | 136 descriptor->register_params_ = registers; |
137 descriptor->deoptimization_handler_ = | 137 descriptor->deoptimization_handler_ = |
138 FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure); | 138 FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure); |
139 } | 139 } |
140 | 140 |
141 | 141 |
| 142 void RegExpConstructResultStub::InitializeInterfaceDescriptor( |
| 143 Isolate* isolate, |
| 144 CodeStubInterfaceDescriptor* descriptor) { |
| 145 static Register registers[] = { ecx, ebx, eax }; |
| 146 descriptor->register_param_count_ = 3; |
| 147 descriptor->register_params_ = registers; |
| 148 descriptor->deoptimization_handler_ = |
| 149 Runtime::FunctionForId(Runtime::kRegExpConstructResult)->entry; |
| 150 } |
| 151 |
| 152 |
142 void LoadFieldStub::InitializeInterfaceDescriptor( | 153 void LoadFieldStub::InitializeInterfaceDescriptor( |
143 Isolate* isolate, | 154 Isolate* isolate, |
144 CodeStubInterfaceDescriptor* descriptor) { | 155 CodeStubInterfaceDescriptor* descriptor) { |
145 static Register registers[] = { edx }; | 156 static Register registers[] = { edx }; |
146 descriptor->register_param_count_ = 1; | 157 descriptor->register_param_count_ = 1; |
147 descriptor->register_params_ = registers; | 158 descriptor->register_params_ = registers; |
148 descriptor->deoptimization_handler_ = NULL; | 159 descriptor->deoptimization_handler_ = NULL; |
149 } | 160 } |
150 | 161 |
151 | 162 |
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1963 | 1974 |
1964 // (11) Sliced string. Replace subject with parent. Go to (5a). | 1975 // (11) Sliced string. Replace subject with parent. Go to (5a). |
1965 // Load offset into edi and replace subject string with parent. | 1976 // Load offset into edi and replace subject string with parent. |
1966 __ mov(edi, FieldOperand(eax, SlicedString::kOffsetOffset)); | 1977 __ mov(edi, FieldOperand(eax, SlicedString::kOffsetOffset)); |
1967 __ mov(eax, FieldOperand(eax, SlicedString::kParentOffset)); | 1978 __ mov(eax, FieldOperand(eax, SlicedString::kParentOffset)); |
1968 __ jmp(&check_underlying); // Go to (5a). | 1979 __ jmp(&check_underlying); // Go to (5a). |
1969 #endif // V8_INTERPRETED_REGEXP | 1980 #endif // V8_INTERPRETED_REGEXP |
1970 } | 1981 } |
1971 | 1982 |
1972 | 1983 |
1973 void RegExpConstructResultStub::Generate(MacroAssembler* masm) { | |
1974 const int kMaxInlineLength = 100; | |
1975 Label slowcase; | |
1976 Label done; | |
1977 __ mov(ebx, Operand(esp, kPointerSize * 3)); | |
1978 __ JumpIfNotSmi(ebx, &slowcase); | |
1979 __ cmp(ebx, Immediate(Smi::FromInt(kMaxInlineLength))); | |
1980 __ j(above, &slowcase); | |
1981 // Smi-tagging is equivalent to multiplying by 2. | |
1982 STATIC_ASSERT(kSmiTag == 0); | |
1983 STATIC_ASSERT(kSmiTagSize == 1); | |
1984 // Allocate RegExpResult followed by FixedArray with size in ebx. | |
1985 // JSArray: [Map][empty properties][Elements][Length-smi][index][input] | |
1986 // Elements: [Map][Length][..elements..] | |
1987 __ Allocate(JSRegExpResult::kSize + FixedArray::kHeaderSize, | |
1988 times_pointer_size, | |
1989 ebx, // In: Number of elements as a smi | |
1990 REGISTER_VALUE_IS_SMI, | |
1991 eax, // Out: Start of allocation (tagged). | |
1992 ecx, // Out: End of allocation. | |
1993 edx, // Scratch register | |
1994 &slowcase, | |
1995 TAG_OBJECT); | |
1996 // eax: Start of allocated area, object-tagged. | |
1997 | |
1998 // Set JSArray map to global.regexp_result_map(). | |
1999 // Set empty properties FixedArray. | |
2000 // Set elements to point to FixedArray allocated right after the JSArray. | |
2001 // Interleave operations for better latency. | |
2002 __ mov(edx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); | |
2003 Factory* factory = masm->isolate()->factory(); | |
2004 __ mov(ecx, Immediate(factory->empty_fixed_array())); | |
2005 __ lea(ebx, Operand(eax, JSRegExpResult::kSize)); | |
2006 __ mov(edx, FieldOperand(edx, GlobalObject::kNativeContextOffset)); | |
2007 __ mov(FieldOperand(eax, JSObject::kElementsOffset), ebx); | |
2008 __ mov(FieldOperand(eax, JSObject::kPropertiesOffset), ecx); | |
2009 __ mov(edx, ContextOperand(edx, Context::REGEXP_RESULT_MAP_INDEX)); | |
2010 __ mov(FieldOperand(eax, HeapObject::kMapOffset), edx); | |
2011 | |
2012 // Set input, index and length fields from arguments. | |
2013 __ mov(ecx, Operand(esp, kPointerSize * 1)); | |
2014 __ mov(FieldOperand(eax, JSRegExpResult::kInputOffset), ecx); | |
2015 __ mov(ecx, Operand(esp, kPointerSize * 2)); | |
2016 __ mov(FieldOperand(eax, JSRegExpResult::kIndexOffset), ecx); | |
2017 __ mov(ecx, Operand(esp, kPointerSize * 3)); | |
2018 __ mov(FieldOperand(eax, JSArray::kLengthOffset), ecx); | |
2019 | |
2020 // Fill out the elements FixedArray. | |
2021 // eax: JSArray. | |
2022 // ebx: FixedArray. | |
2023 // ecx: Number of elements in array, as smi. | |
2024 | |
2025 // Set map. | |
2026 __ mov(FieldOperand(ebx, HeapObject::kMapOffset), | |
2027 Immediate(factory->fixed_array_map())); | |
2028 // Set length. | |
2029 __ mov(FieldOperand(ebx, FixedArray::kLengthOffset), ecx); | |
2030 // Fill contents of fixed-array with undefined. | |
2031 __ SmiUntag(ecx); | |
2032 __ mov(edx, Immediate(factory->undefined_value())); | |
2033 __ lea(ebx, FieldOperand(ebx, FixedArray::kHeaderSize)); | |
2034 // Fill fixed array elements with undefined. | |
2035 // eax: JSArray. | |
2036 // ecx: Number of elements to fill. | |
2037 // ebx: Start of elements in FixedArray. | |
2038 // edx: undefined. | |
2039 Label loop; | |
2040 __ test(ecx, ecx); | |
2041 __ bind(&loop); | |
2042 __ j(less_equal, &done, Label::kNear); // Jump if ecx is negative or zero. | |
2043 __ sub(ecx, Immediate(1)); | |
2044 __ mov(Operand(ebx, ecx, times_pointer_size, 0), edx); | |
2045 __ jmp(&loop); | |
2046 | |
2047 __ bind(&done); | |
2048 __ ret(3 * kPointerSize); | |
2049 | |
2050 __ bind(&slowcase); | |
2051 __ TailCallRuntime(Runtime::kRegExpConstructResult, 3, 1); | |
2052 } | |
2053 | |
2054 | |
2055 static int NegativeComparisonResult(Condition cc) { | 1984 static int NegativeComparisonResult(Condition cc) { |
2056 ASSERT(cc != equal); | 1985 ASSERT(cc != equal); |
2057 ASSERT((cc == less) || (cc == less_equal) | 1986 ASSERT((cc == less) || (cc == less_equal) |
2058 || (cc == greater) || (cc == greater_equal)); | 1987 || (cc == greater) || (cc == greater_equal)); |
2059 return (cc == greater || cc == greater_equal) ? LESS : GREATER; | 1988 return (cc == greater || cc == greater_equal) ? LESS : GREATER; |
2060 } | 1989 } |
2061 | 1990 |
2062 | 1991 |
2063 static void CheckInputType(MacroAssembler* masm, | 1992 static void CheckInputType(MacroAssembler* masm, |
2064 Register input, | 1993 Register input, |
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5427 restore_context ? | 5356 restore_context ? |
5428 &context_restore_operand : NULL); | 5357 &context_restore_operand : NULL); |
5429 } | 5358 } |
5430 | 5359 |
5431 | 5360 |
5432 #undef __ | 5361 #undef __ |
5433 | 5362 |
5434 } } // namespace v8::internal | 5363 } } // namespace v8::internal |
5435 | 5364 |
5436 #endif // V8_TARGET_ARCH_IA32 | 5365 #endif // V8_TARGET_ARCH_IA32 |
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