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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_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
6 | 6 |
7 // Note on Mips implementation: | 7 // Note on Mips implementation: |
8 // | 8 // |
9 // The result_register() for mips is the 'v0' register, which is defined | 9 // The result_register() for mips is the 'v0' register, which is defined |
10 // by the ABI to contain function return values. However, the first | 10 // by the ABI to contain function return values. However, the first |
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1156 PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); | 1156 PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); |
1157 __ bind(&exit); | 1157 __ bind(&exit); |
1158 decrement_loop_depth(); | 1158 decrement_loop_depth(); |
1159 } | 1159 } |
1160 | 1160 |
1161 | 1161 |
1162 void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, | 1162 void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, |
1163 FeedbackVectorSlot slot) { | 1163 FeedbackVectorSlot slot) { |
1164 DCHECK(NeedsHomeObject(initializer)); | 1164 DCHECK(NeedsHomeObject(initializer)); |
1165 __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); | 1165 __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); |
1166 __ li(StoreDescriptor::NameRegister(), | |
1167 Operand(isolate()->factory()->home_object_symbol())); | |
1168 __ lw(StoreDescriptor::ValueRegister(), | 1166 __ lw(StoreDescriptor::ValueRegister(), |
1169 MemOperand(sp, offset * kPointerSize)); | 1167 MemOperand(sp, offset * kPointerSize)); |
1170 EmitLoadStoreICSlot(slot); | 1168 CallStoreIC(slot, isolate()->factory()->home_object_symbol()); |
1171 CallStoreIC(); | |
1172 } | 1169 } |
1173 | 1170 |
1174 | 1171 |
1175 void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, | 1172 void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, |
1176 int offset, | 1173 int offset, |
1177 FeedbackVectorSlot slot) { | 1174 FeedbackVectorSlot slot) { |
1178 DCHECK(NeedsHomeObject(initializer)); | 1175 DCHECK(NeedsHomeObject(initializer)); |
1179 __ Move(StoreDescriptor::ReceiverRegister(), v0); | 1176 __ Move(StoreDescriptor::ReceiverRegister(), v0); |
1180 __ li(StoreDescriptor::NameRegister(), | |
1181 Operand(isolate()->factory()->home_object_symbol())); | |
1182 __ lw(StoreDescriptor::ValueRegister(), | 1177 __ lw(StoreDescriptor::ValueRegister(), |
1183 MemOperand(sp, offset * kPointerSize)); | 1178 MemOperand(sp, offset * kPointerSize)); |
1184 EmitLoadStoreICSlot(slot); | 1179 CallStoreIC(slot, isolate()->factory()->home_object_symbol()); |
1185 CallStoreIC(); | |
1186 } | 1180 } |
1187 | 1181 |
1188 | 1182 |
1189 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, | 1183 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, |
1190 TypeofMode typeof_mode, | 1184 TypeofMode typeof_mode, |
1191 Label* slow) { | 1185 Label* slow) { |
1192 Register current = cp; | 1186 Register current = cp; |
1193 Register next = a1; | 1187 Register next = a1; |
1194 Register temp = a2; | 1188 Register temp = a2; |
1195 | 1189 |
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1412 // Fall through. | 1406 // Fall through. |
1413 case ObjectLiteral::Property::COMPUTED: | 1407 case ObjectLiteral::Property::COMPUTED: |
1414 // It is safe to use [[Put]] here because the boilerplate already | 1408 // It is safe to use [[Put]] here because the boilerplate already |
1415 // contains computed properties with an uninitialized value. | 1409 // contains computed properties with an uninitialized value. |
1416 if (key->IsStringLiteral()) { | 1410 if (key->IsStringLiteral()) { |
1417 DCHECK(key->IsPropertyName()); | 1411 DCHECK(key->IsPropertyName()); |
1418 if (property->emit_store()) { | 1412 if (property->emit_store()) { |
1419 VisitForAccumulatorValue(value); | 1413 VisitForAccumulatorValue(value); |
1420 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 1414 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
1421 DCHECK(StoreDescriptor::ValueRegister().is(a0)); | 1415 DCHECK(StoreDescriptor::ValueRegister().is(a0)); |
1422 __ li(StoreDescriptor::NameRegister(), Operand(key->value())); | |
1423 __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); | 1416 __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); |
1424 EmitLoadStoreICSlot(property->GetSlot(0)); | 1417 CallStoreIC(property->GetSlot(0), key->value()); |
1425 CallStoreIC(); | |
1426 PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS); | 1418 PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS); |
1427 | 1419 |
1428 if (NeedsHomeObject(value)) { | 1420 if (NeedsHomeObject(value)) { |
1429 EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); | 1421 EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); |
1430 } | 1422 } |
1431 } else { | 1423 } else { |
1432 VisitForEffect(value); | 1424 VisitForEffect(value); |
1433 } | 1425 } |
1434 break; | 1426 break; |
1435 } | 1427 } |
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1613 if (!result_saved) { | 1605 if (!result_saved) { |
1614 PushOperand(v0); // array literal | 1606 PushOperand(v0); // array literal |
1615 result_saved = true; | 1607 result_saved = true; |
1616 } | 1608 } |
1617 | 1609 |
1618 VisitForAccumulatorValue(subexpr); | 1610 VisitForAccumulatorValue(subexpr); |
1619 | 1611 |
1620 __ li(StoreDescriptor::NameRegister(), Operand(Smi::FromInt(array_index))); | 1612 __ li(StoreDescriptor::NameRegister(), Operand(Smi::FromInt(array_index))); |
1621 __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp, 0)); | 1613 __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
1622 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 1614 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
1623 EmitLoadStoreICSlot(expr->LiteralFeedbackSlot()); | 1615 CallKeyedStoreIC(expr->LiteralFeedbackSlot()); |
1624 CallKeyedStoreIC(); | |
1625 | 1616 |
1626 PrepareForBailoutForId(expr->GetIdForElement(array_index), | 1617 PrepareForBailoutForId(expr->GetIdForElement(array_index), |
1627 BailoutState::NO_REGISTERS); | 1618 BailoutState::NO_REGISTERS); |
1628 } | 1619 } |
1629 | 1620 |
1630 if (result_saved) { | 1621 if (result_saved) { |
1631 context()->PlugTOS(); | 1622 context()->PlugTOS(); |
1632 } else { | 1623 } else { |
1633 context()->Plug(v0); | 1624 context()->Plug(v0); |
1634 } | 1625 } |
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2053 Variable* var = expr->AsVariableProxy()->var(); | 2044 Variable* var = expr->AsVariableProxy()->var(); |
2054 EffectContext context(this); | 2045 EffectContext context(this); |
2055 EmitVariableAssignment(var, Token::ASSIGN, slot); | 2046 EmitVariableAssignment(var, Token::ASSIGN, slot); |
2056 break; | 2047 break; |
2057 } | 2048 } |
2058 case NAMED_PROPERTY: { | 2049 case NAMED_PROPERTY: { |
2059 PushOperand(result_register()); // Preserve value. | 2050 PushOperand(result_register()); // Preserve value. |
2060 VisitForAccumulatorValue(prop->obj()); | 2051 VisitForAccumulatorValue(prop->obj()); |
2061 __ mov(StoreDescriptor::ReceiverRegister(), result_register()); | 2052 __ mov(StoreDescriptor::ReceiverRegister(), result_register()); |
2062 PopOperand(StoreDescriptor::ValueRegister()); // Restore value. | 2053 PopOperand(StoreDescriptor::ValueRegister()); // Restore value. |
2063 __ li(StoreDescriptor::NameRegister(), | 2054 CallStoreIC(slot, prop->key()->AsLiteral()->value()); |
2064 Operand(prop->key()->AsLiteral()->value())); | |
2065 EmitLoadStoreICSlot(slot); | |
2066 CallStoreIC(); | |
2067 break; | 2055 break; |
2068 } | 2056 } |
2069 case NAMED_SUPER_PROPERTY: { | 2057 case NAMED_SUPER_PROPERTY: { |
2070 PushOperand(v0); | 2058 PushOperand(v0); |
2071 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); | 2059 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
2072 VisitForAccumulatorValue( | 2060 VisitForAccumulatorValue( |
2073 prop->obj()->AsSuperPropertyReference()->home_object()); | 2061 prop->obj()->AsSuperPropertyReference()->home_object()); |
2074 // stack: value, this; v0: home_object | 2062 // stack: value, this; v0: home_object |
2075 Register scratch = a2; | 2063 Register scratch = a2; |
2076 Register scratch2 = a3; | 2064 Register scratch2 = a3; |
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2103 EmitKeyedSuperPropertyStore(prop); | 2091 EmitKeyedSuperPropertyStore(prop); |
2104 break; | 2092 break; |
2105 } | 2093 } |
2106 case KEYED_PROPERTY: { | 2094 case KEYED_PROPERTY: { |
2107 PushOperand(result_register()); // Preserve value. | 2095 PushOperand(result_register()); // Preserve value. |
2108 VisitForStackValue(prop->obj()); | 2096 VisitForStackValue(prop->obj()); |
2109 VisitForAccumulatorValue(prop->key()); | 2097 VisitForAccumulatorValue(prop->key()); |
2110 __ mov(StoreDescriptor::NameRegister(), result_register()); | 2098 __ mov(StoreDescriptor::NameRegister(), result_register()); |
2111 PopOperands(StoreDescriptor::ValueRegister(), | 2099 PopOperands(StoreDescriptor::ValueRegister(), |
2112 StoreDescriptor::ReceiverRegister()); | 2100 StoreDescriptor::ReceiverRegister()); |
2113 EmitLoadStoreICSlot(slot); | 2101 CallKeyedStoreIC(slot); |
2114 CallKeyedStoreIC(); | |
2115 break; | 2102 break; |
2116 } | 2103 } |
2117 } | 2104 } |
2118 context()->Plug(v0); | 2105 context()->Plug(v0); |
2119 } | 2106 } |
2120 | 2107 |
2121 | 2108 |
2122 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( | 2109 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( |
2123 Variable* var, MemOperand location) { | 2110 Variable* var, MemOperand location) { |
2124 __ sw(result_register(), location); | 2111 __ sw(result_register(), location); |
2125 if (var->IsContextSlot()) { | 2112 if (var->IsContextSlot()) { |
2126 // RecordWrite may destroy all its register arguments. | 2113 // RecordWrite may destroy all its register arguments. |
2127 __ Move(a3, result_register()); | 2114 __ Move(a3, result_register()); |
2128 int offset = Context::SlotOffset(var->index()); | 2115 int offset = Context::SlotOffset(var->index()); |
2129 __ RecordWriteContextSlot( | 2116 __ RecordWriteContextSlot( |
2130 a1, offset, a3, a2, kRAHasBeenSaved, kDontSaveFPRegs); | 2117 a1, offset, a3, a2, kRAHasBeenSaved, kDontSaveFPRegs); |
2131 } | 2118 } |
2132 } | 2119 } |
2133 | 2120 |
2134 | 2121 |
2135 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, | 2122 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, |
2136 FeedbackVectorSlot slot) { | 2123 FeedbackVectorSlot slot) { |
2137 if (var->IsUnallocated()) { | 2124 if (var->IsUnallocated()) { |
2138 // Global var, const, or let. | 2125 // Global var, const, or let. |
2139 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 2126 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
2140 __ li(StoreDescriptor::NameRegister(), Operand(var->name())); | |
2141 __ LoadGlobalObject(StoreDescriptor::ReceiverRegister()); | 2127 __ LoadGlobalObject(StoreDescriptor::ReceiverRegister()); |
2142 EmitLoadStoreICSlot(slot); | 2128 CallStoreIC(slot, var->name()); |
2143 CallStoreIC(); | |
2144 | 2129 |
2145 } else if (IsLexicalVariableMode(var->mode()) && op != Token::INIT) { | 2130 } else if (IsLexicalVariableMode(var->mode()) && op != Token::INIT) { |
2146 DCHECK(!var->IsLookupSlot()); | 2131 DCHECK(!var->IsLookupSlot()); |
2147 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | 2132 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
2148 MemOperand location = VarOperand(var, a1); | 2133 MemOperand location = VarOperand(var, a1); |
2149 // Perform an initialization check for lexically declared variables. | 2134 // Perform an initialization check for lexically declared variables. |
2150 if (var->binding_needs_init()) { | 2135 if (var->binding_needs_init()) { |
2151 Label assign; | 2136 Label assign; |
2152 __ lw(a3, location); | 2137 __ lw(a3, location); |
2153 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); | 2138 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
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2202 } | 2187 } |
2203 | 2188 |
2204 | 2189 |
2205 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { | 2190 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
2206 // Assignment to a property, using a named store IC. | 2191 // Assignment to a property, using a named store IC. |
2207 Property* prop = expr->target()->AsProperty(); | 2192 Property* prop = expr->target()->AsProperty(); |
2208 DCHECK(prop != NULL); | 2193 DCHECK(prop != NULL); |
2209 DCHECK(prop->key()->IsLiteral()); | 2194 DCHECK(prop->key()->IsLiteral()); |
2210 | 2195 |
2211 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 2196 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
2212 __ li(StoreDescriptor::NameRegister(), | |
2213 Operand(prop->key()->AsLiteral()->value())); | |
2214 PopOperand(StoreDescriptor::ReceiverRegister()); | 2197 PopOperand(StoreDescriptor::ReceiverRegister()); |
2215 EmitLoadStoreICSlot(expr->AssignmentSlot()); | 2198 CallStoreIC(expr->AssignmentSlot(), prop->key()->AsLiteral()->value()); |
2216 CallStoreIC(); | |
2217 | 2199 |
2218 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 2200 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
2219 context()->Plug(v0); | 2201 context()->Plug(v0); |
2220 } | 2202 } |
2221 | 2203 |
2222 | 2204 |
2223 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { | 2205 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { |
2224 // Assignment to named property of super. | 2206 // Assignment to named property of super. |
2225 // v0 : value | 2207 // v0 : value |
2226 // stack : receiver ('this'), home_object | 2208 // stack : receiver ('this'), home_object |
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2254 // Call keyed store IC. | 2236 // Call keyed store IC. |
2255 // The arguments are: | 2237 // The arguments are: |
2256 // - a0 is the value, | 2238 // - a0 is the value, |
2257 // - a1 is the key, | 2239 // - a1 is the key, |
2258 // - a2 is the receiver. | 2240 // - a2 is the receiver. |
2259 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 2241 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
2260 PopOperands(StoreDescriptor::ReceiverRegister(), | 2242 PopOperands(StoreDescriptor::ReceiverRegister(), |
2261 StoreDescriptor::NameRegister()); | 2243 StoreDescriptor::NameRegister()); |
2262 DCHECK(StoreDescriptor::ValueRegister().is(a0)); | 2244 DCHECK(StoreDescriptor::ValueRegister().is(a0)); |
2263 | 2245 |
2264 EmitLoadStoreICSlot(expr->AssignmentSlot()); | 2246 CallKeyedStoreIC(expr->AssignmentSlot()); |
2265 CallKeyedStoreIC(); | |
2266 | 2247 |
2267 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 2248 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
2268 context()->Plug(v0); | 2249 context()->Plug(v0); |
2269 } | 2250 } |
2270 | 2251 |
2271 | 2252 |
2272 void FullCodeGenerator::CallIC(Handle<Code> code, | 2253 void FullCodeGenerator::CallIC(Handle<Code> code, |
2273 TypeFeedbackId id) { | 2254 TypeFeedbackId id) { |
2274 ic_total_count_++; | 2255 ic_total_count_++; |
2275 __ Call(code, RelocInfo::CODE_TARGET, id); | 2256 __ Call(code, RelocInfo::CODE_TARGET, id); |
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3303 } else { | 3284 } else { |
3304 EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), | 3285 EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
3305 Token::ASSIGN, expr->CountSlot()); | 3286 Token::ASSIGN, expr->CountSlot()); |
3306 PrepareForBailoutForId(expr->AssignmentId(), | 3287 PrepareForBailoutForId(expr->AssignmentId(), |
3307 BailoutState::TOS_REGISTER); | 3288 BailoutState::TOS_REGISTER); |
3308 context()->Plug(v0); | 3289 context()->Plug(v0); |
3309 } | 3290 } |
3310 break; | 3291 break; |
3311 case NAMED_PROPERTY: { | 3292 case NAMED_PROPERTY: { |
3312 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 3293 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
3313 __ li(StoreDescriptor::NameRegister(), | |
3314 Operand(prop->key()->AsLiteral()->value())); | |
3315 PopOperand(StoreDescriptor::ReceiverRegister()); | 3294 PopOperand(StoreDescriptor::ReceiverRegister()); |
3316 EmitLoadStoreICSlot(expr->CountSlot()); | 3295 CallStoreIC(expr->CountSlot(), prop->key()->AsLiteral()->value()); |
3317 CallStoreIC(); | |
3318 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 3296 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
3319 if (expr->is_postfix()) { | 3297 if (expr->is_postfix()) { |
3320 if (!context()->IsEffect()) { | 3298 if (!context()->IsEffect()) { |
3321 context()->PlugTOS(); | 3299 context()->PlugTOS(); |
3322 } | 3300 } |
3323 } else { | 3301 } else { |
3324 context()->Plug(v0); | 3302 context()->Plug(v0); |
3325 } | 3303 } |
3326 break; | 3304 break; |
3327 } | 3305 } |
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3346 } | 3324 } |
3347 } else { | 3325 } else { |
3348 context()->Plug(v0); | 3326 context()->Plug(v0); |
3349 } | 3327 } |
3350 break; | 3328 break; |
3351 } | 3329 } |
3352 case KEYED_PROPERTY: { | 3330 case KEYED_PROPERTY: { |
3353 __ mov(StoreDescriptor::ValueRegister(), result_register()); | 3331 __ mov(StoreDescriptor::ValueRegister(), result_register()); |
3354 PopOperands(StoreDescriptor::ReceiverRegister(), | 3332 PopOperands(StoreDescriptor::ReceiverRegister(), |
3355 StoreDescriptor::NameRegister()); | 3333 StoreDescriptor::NameRegister()); |
3356 EmitLoadStoreICSlot(expr->CountSlot()); | 3334 CallKeyedStoreIC(expr->CountSlot()); |
3357 CallKeyedStoreIC(); | |
3358 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 3335 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
3359 if (expr->is_postfix()) { | 3336 if (expr->is_postfix()) { |
3360 if (!context()->IsEffect()) { | 3337 if (!context()->IsEffect()) { |
3361 context()->PlugTOS(); | 3338 context()->PlugTOS(); |
3362 } | 3339 } |
3363 } else { | 3340 } else { |
3364 context()->Plug(v0); | 3341 context()->Plug(v0); |
3365 } | 3342 } |
3366 break; | 3343 break; |
3367 } | 3344 } |
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3732 reinterpret_cast<uint32_t>( | 3709 reinterpret_cast<uint32_t>( |
3733 isolate->builtins()->OnStackReplacement()->entry())); | 3710 isolate->builtins()->OnStackReplacement()->entry())); |
3734 return ON_STACK_REPLACEMENT; | 3711 return ON_STACK_REPLACEMENT; |
3735 } | 3712 } |
3736 | 3713 |
3737 | 3714 |
3738 } // namespace internal | 3715 } // namespace internal |
3739 } // namespace v8 | 3716 } // namespace v8 |
3740 | 3717 |
3741 #endif // V8_TARGET_ARCH_MIPS | 3718 #endif // V8_TARGET_ARCH_MIPS |
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