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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 "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_MIPS | 7 #if V8_TARGET_ARCH_MIPS |
8 | 8 |
9 // Note on Mips implementation: | 9 // Note on Mips implementation: |
10 // | 10 // |
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849 // 'undefined') because we may have a (legal) redeclaration and we | 849 // 'undefined') because we may have a (legal) redeclaration and we |
850 // must not destroy the current value. | 850 // must not destroy the current value. |
851 if (hole_init) { | 851 if (hole_init) { |
852 __ LoadRoot(a0, Heap::kTheHoleValueRootIndex); | 852 __ LoadRoot(a0, Heap::kTheHoleValueRootIndex); |
853 __ Push(cp, a2, a1, a0); | 853 __ Push(cp, a2, a1, a0); |
854 } else { | 854 } else { |
855 ASSERT(Smi::FromInt(0) == 0); | 855 ASSERT(Smi::FromInt(0) == 0); |
856 __ mov(a0, zero_reg); // Smi::FromInt(0) indicates no initial value. | 856 __ mov(a0, zero_reg); // Smi::FromInt(0) indicates no initial value. |
857 __ Push(cp, a2, a1, a0); | 857 __ Push(cp, a2, a1, a0); |
858 } | 858 } |
859 __ CallRuntime(Runtime::kDeclareContextSlot, 4); | 859 __ CallRuntime(Runtime::kDeclareLookupSlot, 4); |
860 break; | 860 break; |
861 } | 861 } |
862 } | 862 } |
863 } | 863 } |
864 | 864 |
865 | 865 |
866 void FullCodeGenerator::VisitFunctionDeclaration( | 866 void FullCodeGenerator::VisitFunctionDeclaration( |
867 FunctionDeclaration* declaration) { | 867 FunctionDeclaration* declaration) { |
868 VariableProxy* proxy = declaration->proxy(); | 868 VariableProxy* proxy = declaration->proxy(); |
869 Variable* variable = proxy->var(); | 869 Variable* variable = proxy->var(); |
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905 break; | 905 break; |
906 } | 906 } |
907 | 907 |
908 case Variable::LOOKUP: { | 908 case Variable::LOOKUP: { |
909 Comment cmnt(masm_, "[ FunctionDeclaration"); | 909 Comment cmnt(masm_, "[ FunctionDeclaration"); |
910 __ li(a2, Operand(variable->name())); | 910 __ li(a2, Operand(variable->name())); |
911 __ li(a1, Operand(Smi::FromInt(NONE))); | 911 __ li(a1, Operand(Smi::FromInt(NONE))); |
912 __ Push(cp, a2, a1); | 912 __ Push(cp, a2, a1); |
913 // Push initial value for function declaration. | 913 // Push initial value for function declaration. |
914 VisitForStackValue(declaration->fun()); | 914 VisitForStackValue(declaration->fun()); |
915 __ CallRuntime(Runtime::kDeclareContextSlot, 4); | 915 __ CallRuntime(Runtime::kDeclareLookupSlot, 4); |
916 break; | 916 break; |
917 } | 917 } |
918 } | 918 } |
919 } | 919 } |
920 | 920 |
921 | 921 |
922 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { | 922 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { |
923 Variable* variable = declaration->proxy()->var(); | 923 Variable* variable = declaration->proxy()->var(); |
924 ASSERT(variable->location() == Variable::CONTEXT); | 924 ASSERT(variable->location() == Variable::CONTEXT); |
925 ASSERT(variable->interface()->IsFrozen()); | 925 ASSERT(variable->interface()->IsFrozen()); |
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2445 if (var->IsContextSlot()) { | 2445 if (var->IsContextSlot()) { |
2446 // RecordWrite may destroy all its register arguments. | 2446 // RecordWrite may destroy all its register arguments. |
2447 __ Move(a3, result_register()); | 2447 __ Move(a3, result_register()); |
2448 int offset = Context::SlotOffset(var->index()); | 2448 int offset = Context::SlotOffset(var->index()); |
2449 __ RecordWriteContextSlot( | 2449 __ RecordWriteContextSlot( |
2450 a1, offset, a3, a2, kRAHasBeenSaved, kDontSaveFPRegs); | 2450 a1, offset, a3, a2, kRAHasBeenSaved, kDontSaveFPRegs); |
2451 } | 2451 } |
2452 } | 2452 } |
2453 | 2453 |
2454 | 2454 |
2455 void FullCodeGenerator::EmitCallStoreContextSlot( | |
2456 Handle<String> name, StrictMode strict_mode) { | |
2457 __ li(a1, Operand(name)); | |
2458 __ li(a0, Operand(Smi::FromInt(strict_mode))); | |
2459 __ Push(v0, cp, a1, a0); // Value, context, name, strict mode. | |
2460 __ CallRuntime(Runtime::kStoreContextSlot, 4); | |
2461 } | |
2462 | |
2463 | |
2464 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op) { | 2455 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op) { |
2465 if (var->IsUnallocated()) { | 2456 if (var->IsUnallocated()) { |
2466 // Global var, const, or let. | 2457 // Global var, const, or let. |
2467 __ mov(StoreIC::ValueRegister(), result_register()); | 2458 __ mov(StoreIC::ValueRegister(), result_register()); |
2468 __ li(StoreIC::NameRegister(), Operand(var->name())); | 2459 __ li(StoreIC::NameRegister(), Operand(var->name())); |
2469 __ lw(StoreIC::ReceiverRegister(), GlobalObjectOperand()); | 2460 __ lw(StoreIC::ReceiverRegister(), GlobalObjectOperand()); |
2470 CallStoreIC(); | 2461 CallStoreIC(); |
2471 | 2462 |
2472 } else if (op == Token::INIT_CONST_LEGACY) { | 2463 } else if (op == Token::INIT_CONST_LEGACY) { |
2473 // Const initializers need a write barrier. | 2464 // Const initializers need a write barrier. |
2474 ASSERT(!var->IsParameter()); // No const parameters. | 2465 ASSERT(!var->IsParameter()); // No const parameters. |
2475 if (var->IsLookupSlot()) { | 2466 if (var->IsLookupSlot()) { |
2476 __ li(a0, Operand(var->name())); | 2467 __ li(a0, Operand(var->name())); |
2477 __ Push(v0, cp, a0); // Context and name. | 2468 __ Push(v0, cp, a0); // Context and name. |
2478 __ CallRuntime(Runtime::kInitializeConstContextSlot, 3); | 2469 __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot, 3); |
2479 } else { | 2470 } else { |
2480 ASSERT(var->IsStackAllocated() || var->IsContextSlot()); | 2471 ASSERT(var->IsStackAllocated() || var->IsContextSlot()); |
2481 Label skip; | 2472 Label skip; |
2482 MemOperand location = VarOperand(var, a1); | 2473 MemOperand location = VarOperand(var, a1); |
2483 __ lw(a2, location); | 2474 __ lw(a2, location); |
2484 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | 2475 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
2485 __ Branch(&skip, ne, a2, Operand(at)); | 2476 __ Branch(&skip, ne, a2, Operand(at)); |
2486 EmitStoreToStackLocalOrContextSlot(var, location); | 2477 EmitStoreToStackLocalOrContextSlot(var, location); |
2487 __ bind(&skip); | 2478 __ bind(&skip); |
2488 } | 2479 } |
2489 | 2480 |
2490 } else if (var->mode() == LET && op != Token::INIT_LET) { | 2481 } else if (var->mode() == LET && op != Token::INIT_LET) { |
2491 // Non-initializing assignment to let variable needs a write barrier. | 2482 // Non-initializing assignment to let variable needs a write barrier. |
2492 if (var->IsLookupSlot()) { | 2483 ASSERT(!var->IsLookupSlot()); |
2493 EmitCallStoreContextSlot(var->name(), strict_mode()); | 2484 ASSERT(var->IsStackAllocated() || var->IsContextSlot()); |
2494 } else { | 2485 Label assign; |
2495 ASSERT(var->IsStackAllocated() || var->IsContextSlot()); | 2486 MemOperand location = VarOperand(var, a1); |
2496 Label assign; | 2487 __ lw(a3, location); |
2497 MemOperand location = VarOperand(var, a1); | 2488 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
2498 __ lw(a3, location); | 2489 __ Branch(&assign, ne, a3, Operand(t0)); |
2499 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); | 2490 __ li(a3, Operand(var->name())); |
2500 __ Branch(&assign, ne, a3, Operand(t0)); | 2491 __ push(a3); |
2501 __ li(a3, Operand(var->name())); | 2492 __ CallRuntime(Runtime::kThrowReferenceError, 1); |
2502 __ push(a3); | 2493 // Perform the assignment. |
2503 __ CallRuntime(Runtime::kThrowReferenceError, 1); | 2494 __ bind(&assign); |
2504 // Perform the assignment. | 2495 EmitStoreToStackLocalOrContextSlot(var, location); |
2505 __ bind(&assign); | |
2506 EmitStoreToStackLocalOrContextSlot(var, location); | |
2507 } | |
2508 | 2496 |
2509 } else if (!var->is_const_mode() || op == Token::INIT_CONST) { | 2497 } else if (!var->is_const_mode() || op == Token::INIT_CONST) { |
2510 // Assignment to var or initializing assignment to let/const | |
2511 // in harmony mode. | |
2512 if (var->IsLookupSlot()) { | 2498 if (var->IsLookupSlot()) { |
2513 EmitCallStoreContextSlot(var->name(), strict_mode()); | 2499 ASSERT(op == Token::ASSIGN || op == Token::INIT_VAR || |
| 2500 op == Token::ASSIGN_ADD); |
| 2501 // Assignment to var. |
| 2502 __ li(a1, Operand(var->name())); |
| 2503 __ li(a0, Operand(Smi::FromInt(strict_mode()))); |
| 2504 __ Push(v0, cp, a1, a0); // Value, context, name, strict mode. |
| 2505 __ CallRuntime(Runtime::kStoreLookupSlot, 4); |
2514 } else { | 2506 } else { |
| 2507 // Assignment to var or initializing assignment to let/const in harmony |
| 2508 // mode. |
2515 ASSERT((var->IsStackAllocated() || var->IsContextSlot())); | 2509 ASSERT((var->IsStackAllocated() || var->IsContextSlot())); |
2516 MemOperand location = VarOperand(var, a1); | 2510 MemOperand location = VarOperand(var, a1); |
2517 if (generate_debug_code_ && op == Token::INIT_LET) { | 2511 if (generate_debug_code_ && op == Token::INIT_LET) { |
2518 // Check for an uninitialized let binding. | 2512 // Check for an uninitialized let binding. |
2519 __ lw(a2, location); | 2513 __ lw(a2, location); |
2520 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); | 2514 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
2521 __ Check(eq, kLetBindingReInitialization, a2, Operand(t0)); | 2515 __ Check(eq, kLetBindingReInitialization, a2, Operand(t0)); |
2522 } | 2516 } |
2523 EmitStoreToStackLocalOrContextSlot(var, location); | 2517 EmitStoreToStackLocalOrContextSlot(var, location); |
2524 } | 2518 } |
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4862 Assembler::target_address_at(pc_immediate_load_address)) == | 4856 Assembler::target_address_at(pc_immediate_load_address)) == |
4863 reinterpret_cast<uint32_t>( | 4857 reinterpret_cast<uint32_t>( |
4864 isolate->builtins()->OsrAfterStackCheck()->entry())); | 4858 isolate->builtins()->OsrAfterStackCheck()->entry())); |
4865 return OSR_AFTER_STACK_CHECK; | 4859 return OSR_AFTER_STACK_CHECK; |
4866 } | 4860 } |
4867 | 4861 |
4868 | 4862 |
4869 } } // namespace v8::internal | 4863 } } // namespace v8::internal |
4870 | 4864 |
4871 #endif // V8_TARGET_ARCH_MIPS | 4865 #endif // V8_TARGET_ARCH_MIPS |
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