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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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| 197   } | 197   } | 
| 198 | 198 | 
| 199   bool function_in_register = true; | 199   bool function_in_register = true; | 
| 200 | 200 | 
| 201   // Possibly allocate a local context. | 201   // Possibly allocate a local context. | 
| 202   int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; | 202   int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; | 
| 203   if (heap_slots > 0) { | 203   if (heap_slots > 0) { | 
| 204     Comment cmnt(masm_, "[ Allocate context"); | 204     Comment cmnt(masm_, "[ Allocate context"); | 
| 205     // Argument to NewContext is the function, which is still in a1. | 205     // Argument to NewContext is the function, which is still in a1. | 
| 206     bool need_write_barrier = true; | 206     bool need_write_barrier = true; | 
| 207     if (FLAG_harmony_scoping && info->scope()->is_global_scope()) { | 207     if (FLAG_harmony_scoping && info->scope()->is_script_scope()) { | 
| 208       __ push(a1); | 208       __ push(a1); | 
| 209       __ Push(info->scope()->GetScopeInfo()); | 209       __ Push(info->scope()->GetScopeInfo()); | 
| 210       __ CallRuntime(Runtime::kNewGlobalContext, 2); | 210       __ CallRuntime(Runtime::kNewScriptContext, 2); | 
| 211     } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { | 211     } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { | 
| 212       FastNewContextStub stub(isolate(), heap_slots); | 212       FastNewContextStub stub(isolate(), heap_slots); | 
| 213       __ CallStub(&stub); | 213       __ CallStub(&stub); | 
| 214       // Result of FastNewContextStub is always in new space. | 214       // Result of FastNewContextStub is always in new space. | 
| 215       need_write_barrier = false; | 215       need_write_barrier = false; | 
| 216     } else { | 216     } else { | 
| 217       __ push(a1); | 217       __ push(a1); | 
| 218       __ CallRuntime(Runtime::kNewFunctionContext, 1); | 218       __ CallRuntime(Runtime::kNewFunctionContext, 1); | 
| 219     } | 219     } | 
| 220     function_in_register = false; | 220     function_in_register = false; | 
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| 922 | 922 | 
| 923 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { | 923 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { | 
| 924   Variable* variable = declaration->proxy()->var(); | 924   Variable* variable = declaration->proxy()->var(); | 
| 925   DCHECK(variable->location() == Variable::CONTEXT); | 925   DCHECK(variable->location() == Variable::CONTEXT); | 
| 926   DCHECK(variable->interface()->IsFrozen()); | 926   DCHECK(variable->interface()->IsFrozen()); | 
| 927 | 927 | 
| 928   Comment cmnt(masm_, "[ ModuleDeclaration"); | 928   Comment cmnt(masm_, "[ ModuleDeclaration"); | 
| 929   EmitDebugCheckDeclarationContext(variable); | 929   EmitDebugCheckDeclarationContext(variable); | 
| 930 | 930 | 
| 931   // Load instance object. | 931   // Load instance object. | 
| 932   __ LoadContext(a1, scope_->ContextChainLength(scope_->GlobalScope())); | 932   __ LoadContext(a1, scope_->ContextChainLength(scope_->ScriptScope())); | 
| 933   __ lw(a1, ContextOperand(a1, variable->interface()->Index())); | 933   __ lw(a1, ContextOperand(a1, variable->interface()->Index())); | 
| 934   __ lw(a1, ContextOperand(a1, Context::EXTENSION_INDEX)); | 934   __ lw(a1, ContextOperand(a1, Context::EXTENSION_INDEX)); | 
| 935 | 935 | 
| 936   // Assign it. | 936   // Assign it. | 
| 937   __ sw(a1, ContextOperand(cp, variable->index())); | 937   __ sw(a1, ContextOperand(cp, variable->index())); | 
| 938   // We know that we have written a module, which is not a smi. | 938   // We know that we have written a module, which is not a smi. | 
| 939   __ RecordWriteContextSlot(cp, | 939   __ RecordWriteContextSlot(cp, | 
| 940                             Context::SlotOffset(variable->index()), | 940                             Context::SlotOffset(variable->index()), | 
| 941                             a1, | 941                             a1, | 
| 942                             a3, | 942                             a3, | 
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| 5038 } | 5038 } | 
| 5039 | 5039 | 
| 5040 | 5040 | 
| 5041 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { | 5041 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { | 
| 5042   __ lw(dst, ContextOperand(cp, context_index)); | 5042   __ lw(dst, ContextOperand(cp, context_index)); | 
| 5043 } | 5043 } | 
| 5044 | 5044 | 
| 5045 | 5045 | 
| 5046 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { | 5046 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { | 
| 5047   Scope* declaration_scope = scope()->DeclarationScope(); | 5047   Scope* declaration_scope = scope()->DeclarationScope(); | 
| 5048   if (declaration_scope->is_global_scope() || | 5048   if (declaration_scope->is_script_scope() || | 
| 5049       declaration_scope->is_module_scope()) { | 5049       declaration_scope->is_module_scope()) { | 
| 5050     // Contexts nested in the native context have a canonical empty function | 5050     // Contexts nested in the native context have a canonical empty function | 
| 5051     // as their closure, not the anonymous closure containing the global | 5051     // as their closure, not the anonymous closure containing the global | 
| 5052     // code.  Pass a smi sentinel and let the runtime look up the empty | 5052     // code.  Pass a smi sentinel and let the runtime look up the empty | 
| 5053     // function. | 5053     // function. | 
| 5054     __ li(at, Operand(Smi::FromInt(0))); | 5054     __ li(at, Operand(Smi::FromInt(0))); | 
| 5055   } else if (declaration_scope->is_eval_scope()) { | 5055   } else if (declaration_scope->is_eval_scope()) { | 
| 5056     // Contexts created by a call to eval have the same closure as the | 5056     // Contexts created by a call to eval have the same closure as the | 
| 5057     // context calling eval, not the anonymous closure containing the eval | 5057     // context calling eval, not the anonymous closure containing the eval | 
| 5058     // code.  Fetch it from the context. | 5058     // code.  Fetch it from the context. | 
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| 5240       Assembler::target_address_at(pc_immediate_load_address)) == | 5240       Assembler::target_address_at(pc_immediate_load_address)) == | 
| 5241          reinterpret_cast<uint32_t>( | 5241          reinterpret_cast<uint32_t>( | 
| 5242              isolate->builtins()->OsrAfterStackCheck()->entry())); | 5242              isolate->builtins()->OsrAfterStackCheck()->entry())); | 
| 5243   return OSR_AFTER_STACK_CHECK; | 5243   return OSR_AFTER_STACK_CHECK; | 
| 5244 } | 5244 } | 
| 5245 | 5245 | 
| 5246 | 5246 | 
| 5247 } }  // namespace v8::internal | 5247 } }  // namespace v8::internal | 
| 5248 | 5248 | 
| 5249 #endif  // V8_TARGET_ARCH_MIPS | 5249 #endif  // V8_TARGET_ARCH_MIPS | 
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