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Issue 145013010: MIPS: Turn FastNewContextStub into a HydrogenCodeStub. (Closed) Base URL: https://github.com/v8/v8.git@gbl
Patch Set: Created 6 years, 11 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 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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204 } 204 }
205 } 205 }
206 206
207 bool function_in_register = true; 207 bool function_in_register = true;
208 208
209 // Possibly allocate a local context. 209 // Possibly allocate a local context.
210 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; 210 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
211 if (heap_slots > 0) { 211 if (heap_slots > 0) {
212 Comment cmnt(masm_, "[ Allocate context"); 212 Comment cmnt(masm_, "[ Allocate context");
213 // Argument to NewContext is the function, which is still in a1. 213 // Argument to NewContext is the function, which is still in a1.
214 __ push(a1);
215 if (FLAG_harmony_scoping && info->scope()->is_global_scope()) { 214 if (FLAG_harmony_scoping && info->scope()->is_global_scope()) {
215 __ push(a1);
216 __ Push(info->scope()->GetScopeInfo()); 216 __ Push(info->scope()->GetScopeInfo());
217 __ CallRuntime(Runtime::kNewGlobalContext, 2); 217 __ CallRuntime(Runtime::kNewGlobalContext, 2);
218 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { 218 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) {
219 FastNewContextStub stub(heap_slots); 219 FastNewContextStub stub(heap_slots);
220 __ CallStub(&stub); 220 __ CallStub(&stub);
221 } else { 221 } else {
222 __ push(a1);
222 __ CallRuntime(Runtime::kNewFunctionContext, 1); 223 __ CallRuntime(Runtime::kNewFunctionContext, 1);
223 } 224 }
224 function_in_register = false; 225 function_in_register = false;
225 // Context is returned in both v0 and cp. It replaces the context 226 // Context is returned in v0. It replaces the context passed to us.
226 // passed to us. It's saved in the stack and kept live in cp. 227 // It's saved in the stack and kept live in cp.
227 __ sw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); 228 __ mov(cp, v0);
229 __ sw(v0, MemOperand(fp, StandardFrameConstants::kContextOffset));
228 // Copy any necessary parameters into the context. 230 // Copy any necessary parameters into the context.
229 int num_parameters = info->scope()->num_parameters(); 231 int num_parameters = info->scope()->num_parameters();
230 for (int i = 0; i < num_parameters; i++) { 232 for (int i = 0; i < num_parameters; i++) {
231 Variable* var = scope()->parameter(i); 233 Variable* var = scope()->parameter(i);
232 if (var->IsContextSlot()) { 234 if (var->IsContextSlot()) {
233 int parameter_offset = StandardFrameConstants::kCallerSPOffset + 235 int parameter_offset = StandardFrameConstants::kCallerSPOffset +
234 (num_parameters - 1 - i) * kPointerSize; 236 (num_parameters - 1 - i) * kPointerSize;
235 // Load parameter from stack. 237 // Load parameter from stack.
236 __ lw(a0, MemOperand(fp, parameter_offset)); 238 __ lw(a0, MemOperand(fp, parameter_offset));
237 // Store it in the context. 239 // Store it in the context.
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4959 Assembler::target_address_at(pc_immediate_load_address)) == 4961 Assembler::target_address_at(pc_immediate_load_address)) ==
4960 reinterpret_cast<uint32_t>( 4962 reinterpret_cast<uint32_t>(
4961 isolate->builtins()->OsrAfterStackCheck()->entry())); 4963 isolate->builtins()->OsrAfterStackCheck()->entry()));
4962 return OSR_AFTER_STACK_CHECK; 4964 return OSR_AFTER_STACK_CHECK;
4963 } 4965 }
4964 4966
4965 4967
4966 } } // namespace v8::internal 4968 } } // namespace v8::internal
4967 4969
4968 #endif // V8_TARGET_ARCH_MIPS 4970 #endif // V8_TARGET_ARCH_MIPS
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