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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_ARM64 | 7 #if V8_TARGET_ARCH_ARM64 |
| 8 | 8 |
| 9 #include "src/code-factory.h" | 9 #include "src/code-factory.h" |
| 10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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| 189 } | 189 } |
| 190 } | 190 } |
| 191 | 191 |
| 192 bool function_in_register_x1 = true; | 192 bool function_in_register_x1 = true; |
| 193 | 193 |
| 194 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; | 194 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 195 if (heap_slots > 0) { | 195 if (heap_slots > 0) { |
| 196 // Argument to NewContext is the function, which is still in x1. | 196 // Argument to NewContext is the function, which is still in x1. |
| 197 Comment cmnt(masm_, "[ Allocate context"); | 197 Comment cmnt(masm_, "[ Allocate context"); |
| 198 bool need_write_barrier = true; | 198 bool need_write_barrier = true; |
| 199 if (FLAG_harmony_scoping && info->scope()->is_global_scope()) { | 199 if (FLAG_harmony_scoping && info->scope()->is_script_scope()) { |
| 200 __ Mov(x10, Operand(info->scope()->GetScopeInfo())); | 200 __ Mov(x10, Operand(info->scope()->GetScopeInfo())); |
| 201 __ Push(x1, x10); | 201 __ Push(x1, x10); |
| 202 __ CallRuntime(Runtime::kNewGlobalContext, 2); | 202 __ CallRuntime(Runtime::kNewScriptContext, 2); |
| 203 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { | 203 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 204 FastNewContextStub stub(isolate(), heap_slots); | 204 FastNewContextStub stub(isolate(), heap_slots); |
| 205 __ CallStub(&stub); | 205 __ CallStub(&stub); |
| 206 // Result of FastNewContextStub is always in new space. | 206 // Result of FastNewContextStub is always in new space. |
| 207 need_write_barrier = false; | 207 need_write_barrier = false; |
| 208 } else { | 208 } else { |
| 209 __ Push(x1); | 209 __ Push(x1); |
| 210 __ CallRuntime(Runtime::kNewFunctionContext, 1); | 210 __ CallRuntime(Runtime::kNewFunctionContext, 1); |
| 211 } | 211 } |
| 212 function_in_register_x1 = false; | 212 function_in_register_x1 = false; |
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| 927 | 927 |
| 928 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { | 928 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { |
| 929 Variable* variable = declaration->proxy()->var(); | 929 Variable* variable = declaration->proxy()->var(); |
| 930 DCHECK(variable->location() == Variable::CONTEXT); | 930 DCHECK(variable->location() == Variable::CONTEXT); |
| 931 DCHECK(variable->interface()->IsFrozen()); | 931 DCHECK(variable->interface()->IsFrozen()); |
| 932 | 932 |
| 933 Comment cmnt(masm_, "[ ModuleDeclaration"); | 933 Comment cmnt(masm_, "[ ModuleDeclaration"); |
| 934 EmitDebugCheckDeclarationContext(variable); | 934 EmitDebugCheckDeclarationContext(variable); |
| 935 | 935 |
| 936 // Load instance object. | 936 // Load instance object. |
| 937 __ LoadContext(x1, scope_->ContextChainLength(scope_->GlobalScope())); | 937 __ LoadContext(x1, scope_->ContextChainLength(scope_->ScriptScope())); |
| 938 __ Ldr(x1, ContextMemOperand(x1, variable->interface()->Index())); | 938 __ Ldr(x1, ContextMemOperand(x1, variable->interface()->Index())); |
| 939 __ Ldr(x1, ContextMemOperand(x1, Context::EXTENSION_INDEX)); | 939 __ Ldr(x1, ContextMemOperand(x1, Context::EXTENSION_INDEX)); |
| 940 | 940 |
| 941 // Assign it. | 941 // Assign it. |
| 942 __ Str(x1, ContextMemOperand(cp, variable->index())); | 942 __ Str(x1, ContextMemOperand(cp, variable->index())); |
| 943 // We know that we have written a module, which is not a smi. | 943 // We know that we have written a module, which is not a smi. |
| 944 __ RecordWriteContextSlot(cp, | 944 __ RecordWriteContextSlot(cp, |
| 945 Context::SlotOffset(variable->index()), | 945 Context::SlotOffset(variable->index()), |
| 946 x1, | 946 x1, |
| 947 x3, | 947 x3, |
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| 5104 } | 5104 } |
| 5105 | 5105 |
| 5106 | 5106 |
| 5107 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { | 5107 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
| 5108 __ Ldr(dst, ContextMemOperand(cp, context_index)); | 5108 __ Ldr(dst, ContextMemOperand(cp, context_index)); |
| 5109 } | 5109 } |
| 5110 | 5110 |
| 5111 | 5111 |
| 5112 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { | 5112 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { |
| 5113 Scope* declaration_scope = scope()->DeclarationScope(); | 5113 Scope* declaration_scope = scope()->DeclarationScope(); |
| 5114 if (declaration_scope->is_global_scope() || | 5114 if (declaration_scope->is_script_scope() || |
| 5115 declaration_scope->is_module_scope()) { | 5115 declaration_scope->is_module_scope()) { |
| 5116 // Contexts nested in the native context have a canonical empty function | 5116 // Contexts nested in the native context have a canonical empty function |
| 5117 // as their closure, not the anonymous closure containing the global | 5117 // as their closure, not the anonymous closure containing the global |
| 5118 // code. Pass a smi sentinel and let the runtime look up the empty | 5118 // code. Pass a smi sentinel and let the runtime look up the empty |
| 5119 // function. | 5119 // function. |
| 5120 DCHECK(kSmiTag == 0); | 5120 DCHECK(kSmiTag == 0); |
| 5121 __ Push(xzr); | 5121 __ Push(xzr); |
| 5122 } else if (declaration_scope->is_eval_scope()) { | 5122 } else if (declaration_scope->is_eval_scope()) { |
| 5123 // Contexts created by a call to eval have the same closure as the | 5123 // Contexts created by a call to eval have the same closure as the |
| 5124 // context calling eval, not the anonymous closure containing the eval | 5124 // context calling eval, not the anonymous closure containing the eval |
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| 5323 return previous_; | 5323 return previous_; |
| 5324 } | 5324 } |
| 5325 | 5325 |
| 5326 | 5326 |
| 5327 #undef __ | 5327 #undef __ |
| 5328 | 5328 |
| 5329 | 5329 |
| 5330 } } // namespace v8::internal | 5330 } } // namespace v8::internal |
| 5331 | 5331 |
| 5332 #endif // V8_TARGET_ARCH_ARM64 | 5332 #endif // V8_TARGET_ARCH_ARM64 |
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