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Issue 1259963002: [stubs] Don't pass name to Load/StoreGlobalViaContext stubs. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix rebase Created 5 years, 4 months ago
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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_ARM 7 #if V8_TARGET_ARCH_ARM
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/bootstrapper.h" 10 #include "src/bootstrapper.h"
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5054 5054
5055 __ bind(&fast_elements_case); 5055 __ bind(&fast_elements_case);
5056 GenerateCase(masm, FAST_ELEMENTS); 5056 GenerateCase(masm, FAST_ELEMENTS);
5057 } 5057 }
5058 5058
5059 5059
5060 void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) { 5060 void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) {
5061 Register context = cp; 5061 Register context = cp;
5062 Register result = r0; 5062 Register result = r0;
5063 Register slot = r2; 5063 Register slot = r2;
5064 Register name = r3;
5065 Label slow_case;
5066 5064
5067 // Go up the context chain to the script context. 5065 // Go up the context chain to the script context.
5068 for (int i = 0; i < depth(); ++i) { 5066 for (int i = 0; i < depth(); ++i) {
5069 __ ldr(result, ContextOperand(context, Context::PREVIOUS_INDEX)); 5067 __ ldr(result, ContextOperand(context, Context::PREVIOUS_INDEX));
5070 context = result; 5068 context = result;
5071 } 5069 }
5072 5070
5073 // Load the PropertyCell value at the specified slot. 5071 // Load the PropertyCell value at the specified slot.
5074 __ add(result, context, Operand(slot, LSL, kPointerSizeLog2)); 5072 __ add(result, context, Operand(slot, LSL, kPointerSizeLog2));
5075 __ ldr(result, ContextOperand(result)); 5073 __ ldr(result, ContextOperand(result));
5076 __ ldr(result, FieldMemOperand(result, PropertyCell::kValueOffset)); 5074 __ ldr(result, FieldMemOperand(result, PropertyCell::kValueOffset));
5077 5075
5078 // If the result is not the_hole, return. Otherwise, handle in the runtime. 5076 // If the result is not the_hole, return. Otherwise, handle in the runtime.
5079 __ CompareRoot(result, Heap::kTheHoleValueRootIndex); 5077 __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
5080 __ Ret(ne); 5078 __ Ret(ne);
5081 5079
5082 // Fallback to runtime. 5080 // Fallback to runtime.
5083 __ bind(&slow_case);
5084 __ SmiTag(slot); 5081 __ SmiTag(slot);
5085 __ push(slot); 5082 __ push(slot);
5086 __ push(name); 5083 __ TailCallRuntime(Runtime::kLoadGlobalViaContext, 1, 1);
5087 __ TailCallRuntime(Runtime::kLoadGlobalViaContext, 2, 1);
5088 } 5084 }
5089 5085
5090 5086
5091 void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) { 5087 void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) {
5092 Register value = r0; 5088 Register value = r0;
5093 Register slot = r2; 5089 Register slot = r2;
5094 Register name = r3;
5095 5090
5096 Register cell = r1; 5091 Register cell = r1;
5097 Register cell_details = r4; 5092 Register cell_details = r4;
5098 Register cell_value = r5; 5093 Register cell_value = r5;
5099 Register cell_value_map = r6; 5094 Register cell_value_map = r6;
5100 Register scratch = r9; 5095 Register scratch = r9;
5101 5096
5102 Register context = cp; 5097 Register context = cp;
5103 Register context_temp = cell; 5098 Register context_temp = cell;
5104 5099
5105 Label fast_heapobject_case, fast_smi_case, slow_case; 5100 Label fast_heapobject_case, fast_smi_case, slow_case;
5106 5101
5107 if (FLAG_debug_code) { 5102 if (FLAG_debug_code) {
5108 __ CompareRoot(value, Heap::kTheHoleValueRootIndex); 5103 __ CompareRoot(value, Heap::kTheHoleValueRootIndex);
5109 __ Check(ne, kUnexpectedValue); 5104 __ Check(ne, kUnexpectedValue);
5110 __ AssertName(name);
5111 } 5105 }
5112 5106
5113 // Go up the context chain to the script context. 5107 // Go up the context chain to the script context.
5114 for (int i = 0; i < depth(); i++) { 5108 for (int i = 0; i < depth(); i++) {
5115 __ ldr(context_temp, ContextOperand(context, Context::PREVIOUS_INDEX)); 5109 __ ldr(context_temp, ContextOperand(context, Context::PREVIOUS_INDEX));
5116 context = context_temp; 5110 context = context_temp;
5117 } 5111 }
5118 5112
5119 // Load the PropertyCell at the specified slot. 5113 // Load the PropertyCell at the specified slot.
5120 __ add(cell, context, Operand(slot, LSL, kPointerSizeLog2)); 5114 __ add(cell, context, Operand(slot, LSL, kPointerSizeLog2));
(...skipping 79 matching lines...) Expand 10 before | Expand all | Expand 10 after
5200 __ JumpIfSmi(cell_value, &slow_case); 5194 __ JumpIfSmi(cell_value, &slow_case);
5201 5195
5202 __ ldr(cell_value_map, FieldMemOperand(cell_value, HeapObject::kMapOffset)); 5196 __ ldr(cell_value_map, FieldMemOperand(cell_value, HeapObject::kMapOffset));
5203 __ ldr(scratch, FieldMemOperand(value, HeapObject::kMapOffset)); 5197 __ ldr(scratch, FieldMemOperand(value, HeapObject::kMapOffset));
5204 __ cmp(cell_value_map, scratch); 5198 __ cmp(cell_value_map, scratch);
5205 __ b(eq, &fast_heapobject_case); 5199 __ b(eq, &fast_heapobject_case);
5206 5200
5207 // Fallback to runtime. 5201 // Fallback to runtime.
5208 __ bind(&slow_case); 5202 __ bind(&slow_case);
5209 __ SmiTag(slot); 5203 __ SmiTag(slot);
5210 __ push(slot); 5204 __ Push(slot, value);
5211 __ push(name);
5212 __ push(value);
5213 __ TailCallRuntime(is_strict(language_mode()) 5205 __ TailCallRuntime(is_strict(language_mode())
5214 ? Runtime::kStoreGlobalViaContext_Strict 5206 ? Runtime::kStoreGlobalViaContext_Strict
5215 : Runtime::kStoreGlobalViaContext_Sloppy, 5207 : Runtime::kStoreGlobalViaContext_Sloppy,
5216 3, 1); 5208 2, 1);
5217 } 5209 }
5218 5210
5219 5211
5220 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { 5212 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) {
5221 return ref0.address() - ref1.address(); 5213 return ref0.address() - ref1.address();
5222 } 5214 }
5223 5215
5224 5216
5225 // Calls an API function. Allocates HandleScope, extracts returned value 5217 // Calls an API function. Allocates HandleScope, extracts returned value
5226 // from handle and propagates exceptions. Restores context. stack_space 5218 // from handle and propagates exceptions. Restores context. stack_space
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5532 MemOperand(fp, 6 * kPointerSize), NULL); 5524 MemOperand(fp, 6 * kPointerSize), NULL);
5533 } 5525 }
5534 5526
5535 5527
5536 #undef __ 5528 #undef __
5537 5529
5538 } // namespace internal 5530 } // namespace internal
5539 } // namespace v8 5531 } // namespace v8
5540 5532
5541 #endif // V8_TARGET_ARCH_ARM 5533 #endif // V8_TARGET_ARCH_ARM
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