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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 #if V8_TARGET_ARCH_MIPS64 | 5 #if V8_TARGET_ARCH_MIPS64 |
6 | 6 |
7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
8 #include "src/debug/debug.h" | 8 #include "src/debug/debug.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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2137 | 2137 |
2138 Register arguments_list = a0; | 2138 Register arguments_list = a0; |
2139 Register target = a1; | 2139 Register target = a1; |
2140 Register new_target = a3; | 2140 Register new_target = a3; |
2141 | 2141 |
2142 Register args = a0; | 2142 Register args = a0; |
2143 Register len = a2; | 2143 Register len = a2; |
2144 | 2144 |
2145 // Create the list of arguments from the array-like argumentsList. | 2145 // Create the list of arguments from the array-like argumentsList. |
2146 { | 2146 { |
2147 Label create_arguments, create_array, create_runtime, done_create; | 2147 Label create_arguments, create_array, create_holey_array, create_runtime, |
| 2148 done_create; |
2148 __ JumpIfSmi(arguments_list, &create_runtime); | 2149 __ JumpIfSmi(arguments_list, &create_runtime); |
2149 | 2150 |
2150 // Load the map of argumentsList into a2. | 2151 // Load the map of argumentsList into a2. |
2151 Register arguments_list_map = a2; | 2152 Register arguments_list_map = a2; |
2152 __ ld(arguments_list_map, | 2153 __ ld(arguments_list_map, |
2153 FieldMemOperand(arguments_list, HeapObject::kMapOffset)); | 2154 FieldMemOperand(arguments_list, HeapObject::kMapOffset)); |
2154 | 2155 |
2155 // Load native context into a4. | 2156 // Load native context into a4. |
2156 Register native_context = a4; | 2157 Register native_context = a4; |
2157 __ ld(native_context, NativeContextMemOperand()); | 2158 __ ld(native_context, NativeContextMemOperand()); |
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2185 __ bind(&create_arguments); | 2186 __ bind(&create_arguments); |
2186 __ lw(len, UntagSmiFieldMemOperand(arguments_list, | 2187 __ lw(len, UntagSmiFieldMemOperand(arguments_list, |
2187 JSArgumentsObject::kLengthOffset)); | 2188 JSArgumentsObject::kLengthOffset)); |
2188 __ ld(a4, FieldMemOperand(arguments_list, JSObject::kElementsOffset)); | 2189 __ ld(a4, FieldMemOperand(arguments_list, JSObject::kElementsOffset)); |
2189 __ lw(at, UntagSmiFieldMemOperand(a4, FixedArray::kLengthOffset)); | 2190 __ lw(at, UntagSmiFieldMemOperand(a4, FixedArray::kLengthOffset)); |
2190 __ Branch(&create_runtime, ne, len, Operand(at)); | 2191 __ Branch(&create_runtime, ne, len, Operand(at)); |
2191 __ mov(args, a4); | 2192 __ mov(args, a4); |
2192 | 2193 |
2193 __ Branch(&done_create); | 2194 __ Branch(&done_create); |
2194 | 2195 |
| 2196 // For holey JSArrays we need to check that the array prototype chain |
| 2197 // protector is intact and our prototype is the Array.prototype actually. |
| 2198 __ bind(&create_holey_array); |
| 2199 __ ld(a2, FieldMemOperand(a2, Map::kPrototypeOffset)); |
| 2200 __ ld(at, ContextMemOperand(t0, Context::INITIAL_ARRAY_PROTOTYPE_INDEX)); |
| 2201 __ Branch(&create_runtime, ne, a2, Operand(at)); |
| 2202 __ LoadRoot(t0, Heap::kArrayProtectorRootIndex); |
| 2203 __ lw(a2, UntagSmiFieldMemOperand(t0, PropertyCell::kValueOffset)); |
| 2204 __ Branch(&create_runtime, ne, a2, |
| 2205 Operand(Smi::FromInt(Isolate::kProtectorValid))); |
| 2206 __ lw(a2, UntagSmiFieldMemOperand(a0, JSArray::kLengthOffset)); |
| 2207 __ ld(a0, FieldMemOperand(a0, JSArray::kElementsOffset)); |
| 2208 __ Branch(&done_create); |
| 2209 |
2195 // Try to create the list from a JSArray object. | 2210 // Try to create the list from a JSArray object. |
2196 __ bind(&create_array); | 2211 __ bind(&create_array); |
2197 __ ld(a2, FieldMemOperand(a2, Map::kBitField2Offset)); | 2212 __ ld(a2, FieldMemOperand(a2, Map::kBitField2Offset)); |
2198 __ DecodeField<Map::ElementsKindBits>(a2); | 2213 __ DecodeField<Map::ElementsKindBits>(a2); |
2199 STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); | 2214 STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
2200 STATIC_ASSERT(FAST_ELEMENTS == 2); | 2215 STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 2216 STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
| 2217 __ Branch(&create_holey_array, eq, a2, Operand(FAST_HOLEY_SMI_ELEMENTS)); |
| 2218 __ Branch(&create_holey_array, eq, a2, Operand(FAST_HOLEY_ELEMENTS)); |
2201 __ andi(a2, a2, uint16_t(~FAST_ELEMENTS)); // works if enum ElementsKind | 2219 __ andi(a2, a2, uint16_t(~FAST_ELEMENTS)); // works if enum ElementsKind |
2202 // has less than 2^16 elements | 2220 // has less than 2^16 elements |
2203 __ Branch(&create_runtime, ne, a2, Operand(int64_t(0))); | 2221 __ Branch(&create_runtime, ne, a2, Operand(int64_t(0))); |
2204 __ lw(a2, UntagSmiFieldMemOperand(arguments_list, JSArray::kLengthOffset)); | 2222 __ lw(a2, UntagSmiFieldMemOperand(arguments_list, JSArray::kLengthOffset)); |
2205 __ ld(a0, FieldMemOperand(arguments_list, JSArray::kElementsOffset)); | 2223 __ ld(a0, FieldMemOperand(arguments_list, JSArray::kElementsOffset)); |
2206 | 2224 |
2207 __ bind(&done_create); | 2225 __ bind(&done_create); |
2208 } | 2226 } |
2209 | 2227 |
2210 // Check for stack overflow. | 2228 // Check for stack overflow. |
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2226 // ----------- S t a t e ------------- | 2244 // ----------- S t a t e ------------- |
2227 // -- a1 : target | 2245 // -- a1 : target |
2228 // -- a0 : args (a FixedArray built from argumentsList) | 2246 // -- a0 : args (a FixedArray built from argumentsList) |
2229 // -- a2 : len (number of elements to push from args) | 2247 // -- a2 : len (number of elements to push from args) |
2230 // -- a3 : new.target (checked to be constructor or undefined) | 2248 // -- a3 : new.target (checked to be constructor or undefined) |
2231 // -- sp[0] : thisArgument | 2249 // -- sp[0] : thisArgument |
2232 // ----------------------------------- | 2250 // ----------------------------------- |
2233 | 2251 |
2234 // Push arguments onto the stack (thisArgument is already on the stack). | 2252 // Push arguments onto the stack (thisArgument is already on the stack). |
2235 { | 2253 { |
2236 Label done, loop; | 2254 Label done, push, loop; |
2237 Register src = a4; | 2255 Register src = a4; |
2238 Register scratch = len; | 2256 Register scratch = len; |
2239 | 2257 |
2240 __ daddiu(src, args, FixedArray::kHeaderSize - kHeapObjectTag); | 2258 __ daddiu(src, args, FixedArray::kHeaderSize - kHeapObjectTag); |
2241 __ Branch(&done, eq, len, Operand(zero_reg), i::USE_DELAY_SLOT); | 2259 __ Branch(&done, eq, len, Operand(zero_reg), i::USE_DELAY_SLOT); |
2242 __ mov(a0, len); // The 'len' argument for Call() or Construct(). | 2260 __ mov(a0, len); // The 'len' argument for Call() or Construct(). |
2243 __ dsll(scratch, len, kPointerSizeLog2); | 2261 __ dsll(scratch, len, kPointerSizeLog2); |
2244 __ Dsubu(scratch, sp, Operand(scratch)); | 2262 __ Dsubu(scratch, sp, Operand(scratch)); |
| 2263 __ LoadRoot(t1, Heap::kTheHoleValueRootIndex); |
2245 __ bind(&loop); | 2264 __ bind(&loop); |
2246 __ ld(a5, MemOperand(src)); | 2265 __ ld(a5, MemOperand(src)); |
| 2266 __ Branch(&push, ne, a5, Operand(t1)); |
| 2267 __ LoadRoot(a5, Heap::kUndefinedValueRootIndex); |
| 2268 __ bind(&push); |
2247 __ daddiu(src, src, kPointerSize); | 2269 __ daddiu(src, src, kPointerSize); |
2248 __ Push(a5); | 2270 __ Push(a5); |
2249 __ Branch(&loop, ne, scratch, Operand(sp)); | 2271 __ Branch(&loop, ne, scratch, Operand(sp)); |
2250 __ bind(&done); | 2272 __ bind(&done); |
2251 } | 2273 } |
2252 | 2274 |
2253 // ----------- S t a t e ------------- | 2275 // ----------- S t a t e ------------- |
2254 // -- a0 : argument count (len) | 2276 // -- a0 : argument count (len) |
2255 // -- a1 : target | 2277 // -- a1 : target |
2256 // -- a3 : new.target (checked to be constructor or undefinded) | 2278 // -- a3 : new.target (checked to be constructor or undefinded) |
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2970 __ break_(0xCC); | 2992 __ break_(0xCC); |
2971 } | 2993 } |
2972 } | 2994 } |
2973 | 2995 |
2974 #undef __ | 2996 #undef __ |
2975 | 2997 |
2976 } // namespace internal | 2998 } // namespace internal |
2977 } // namespace v8 | 2999 } // namespace v8 |
2978 | 3000 |
2979 #endif // V8_TARGET_ARCH_MIPS64 | 3001 #endif // V8_TARGET_ARCH_MIPS64 |
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