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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 #if V8_TARGET_ARCH_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
| 6 | 6 |
| 7 #include "src/code-factory.h" | 7 #include "src/code-factory.h" |
| 8 #include "src/code-stubs.h" | 8 #include "src/code-stubs.h" |
| 9 #include "src/codegen.h" | 9 #include "src/codegen.h" |
| 10 #include "src/compiler.h" | 10 #include "src/compiler.h" |
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| 104 CompilationInfo* info = info_; | 104 CompilationInfo* info = info_; |
| 105 profiling_counter_ = isolate()->factory()->NewCell( | 105 profiling_counter_ = isolate()->factory()->NewCell( |
| 106 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); | 106 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
| 107 SetFunctionPosition(function()); | 107 SetFunctionPosition(function()); |
| 108 Comment cmnt(masm_, "[ Function compiled by full code generator"); | 108 Comment cmnt(masm_, "[ Function compiled by full code generator"); |
| 109 | 109 |
| 110 ProfileEntryHookStub::MaybeCallEntryHook(masm_); | 110 ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| 111 | 111 |
| 112 #ifdef DEBUG | 112 #ifdef DEBUG |
| 113 if (strlen(FLAG_stop_at) > 0 && | 113 if (strlen(FLAG_stop_at) > 0 && |
| 114 info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { | 114 info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| 115 __ Debug("stop-at", __LINE__, BREAK); | 115 __ Debug("stop-at", __LINE__, BREAK); |
| 116 } | 116 } |
| 117 #endif | 117 #endif |
| 118 | 118 |
| 119 // Sloppy mode functions and builtins need to replace the receiver with the | 119 // Sloppy mode functions and builtins need to replace the receiver with the |
| 120 // global proxy when called as functions (without an explicit receiver | 120 // global proxy when called as functions (without an explicit receiver |
| 121 // object). | 121 // object). |
| 122 if (is_sloppy(info->language_mode()) && !info->is_native() && | 122 if (is_sloppy(info->language_mode()) && !info->is_native() && |
| 123 info->MayUseThis() && info->scope()->has_this_declaration()) { | 123 info->MayUseThis() && info->scope()->has_this_declaration()) { |
| 124 Label ok; | 124 Label ok; |
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| 144 // Push(lr, fp, cp, x1); | 144 // Push(lr, fp, cp, x1); |
| 145 // Add(fp, jssp, 2 * kPointerSize); | 145 // Add(fp, jssp, 2 * kPointerSize); |
| 146 info->set_prologue_offset(masm_->pc_offset()); | 146 info->set_prologue_offset(masm_->pc_offset()); |
| 147 __ Prologue(info->IsCodePreAgingActive()); | 147 __ Prologue(info->IsCodePreAgingActive()); |
| 148 info->AddNoFrameRange(0, masm_->pc_offset()); | 148 info->AddNoFrameRange(0, masm_->pc_offset()); |
| 149 | 149 |
| 150 // Reserve space on the stack for locals. | 150 // Reserve space on the stack for locals. |
| 151 { Comment cmnt(masm_, "[ Allocate locals"); | 151 { Comment cmnt(masm_, "[ Allocate locals"); |
| 152 int locals_count = info->scope()->num_stack_slots(); | 152 int locals_count = info->scope()->num_stack_slots(); |
| 153 // Generators allocate locals, if any, in context slots. | 153 // Generators allocate locals, if any, in context slots. |
| 154 DCHECK(!IsGeneratorFunction(info->function()->kind()) || locals_count == 0); | 154 DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0); |
| 155 | 155 |
| 156 if (locals_count > 0) { | 156 if (locals_count > 0) { |
| 157 if (locals_count >= 128) { | 157 if (locals_count >= 128) { |
| 158 Label ok; | 158 Label ok; |
| 159 DCHECK(jssp.Is(__ StackPointer())); | 159 DCHECK(jssp.Is(__ StackPointer())); |
| 160 __ Sub(x10, jssp, locals_count * kPointerSize); | 160 __ Sub(x10, jssp, locals_count * kPointerSize); |
| 161 __ CompareRoot(x10, Heap::kRealStackLimitRootIndex); | 161 __ CompareRoot(x10, Heap::kRealStackLimitRootIndex); |
| 162 __ B(hs, &ok); | 162 __ B(hs, &ok); |
| 163 __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); | 163 __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); |
| 164 __ Bind(&ok); | 164 __ Bind(&ok); |
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| 1462 // | 1462 // |
| 1463 // The condition on the declaration scopes is a conservative check for | 1463 // The condition on the declaration scopes is a conservative check for |
| 1464 // nested functions that access a binding and are called before the | 1464 // nested functions that access a binding and are called before the |
| 1465 // binding is initialized: | 1465 // binding is initialized: |
| 1466 // function() { f(); let x = 1; function f() { x = 2; } } | 1466 // function() { f(); let x = 1; function f() { x = 2; } } |
| 1467 // | 1467 // |
| 1468 bool skip_init_check; | 1468 bool skip_init_check; |
| 1469 if (var->scope()->DeclarationScope() != scope()->DeclarationScope()) { | 1469 if (var->scope()->DeclarationScope() != scope()->DeclarationScope()) { |
| 1470 skip_init_check = false; | 1470 skip_init_check = false; |
| 1471 } else if (var->is_this()) { | 1471 } else if (var->is_this()) { |
| 1472 CHECK(info_->function() != nullptr && | 1472 CHECK(info_->has_literal() && |
| 1473 (info_->function()->kind() & kSubclassConstructor) != 0); | 1473 (info_->literal()->kind() & kSubclassConstructor) != 0); |
| 1474 // TODO(dslomov): implement 'this' hole check elimination. | 1474 // TODO(dslomov): implement 'this' hole check elimination. |
| 1475 skip_init_check = false; | 1475 skip_init_check = false; |
| 1476 } else { | 1476 } else { |
| 1477 // Check that we always have valid source position. | 1477 // Check that we always have valid source position. |
| 1478 DCHECK(var->initializer_position() != RelocInfo::kNoPosition); | 1478 DCHECK(var->initializer_position() != RelocInfo::kNoPosition); |
| 1479 DCHECK(proxy->position() != RelocInfo::kNoPosition); | 1479 DCHECK(proxy->position() != RelocInfo::kNoPosition); |
| 1480 skip_init_check = var->mode() != CONST_LEGACY && | 1480 skip_init_check = var->mode() != CONST_LEGACY && |
| 1481 var->initializer_position() < proxy->position(); | 1481 var->initializer_position() < proxy->position(); |
| 1482 } | 1482 } |
| 1483 | 1483 |
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| 5400 } | 5400 } |
| 5401 | 5401 |
| 5402 return INTERRUPT; | 5402 return INTERRUPT; |
| 5403 } | 5403 } |
| 5404 | 5404 |
| 5405 | 5405 |
| 5406 } // namespace internal | 5406 } // namespace internal |
| 5407 } // namespace v8 | 5407 } // namespace v8 |
| 5408 | 5408 |
| 5409 #endif // V8_TARGET_ARCH_ARM64 | 5409 #endif // V8_TARGET_ARCH_ARM64 |
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