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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 #if V8_TARGET_ARCH_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
| 6 | 6 |
| 7 // Note on Mips implementation: | 7 // Note on Mips implementation: |
| 8 // | 8 // |
| 9 // The result_register() for mips is the 'v0' register, which is defined | 9 // The result_register() for mips is the 'v0' register, which is defined |
| 10 // by the ABI to contain function return values. However, the first | 10 // by the ABI to contain function return values. However, the first |
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| 193 // Possibly allocate a local context. | 193 // Possibly allocate a local context. |
| 194 if (info->scope()->num_heap_slots() > 0) { | 194 if (info->scope()->num_heap_slots() > 0) { |
| 195 Comment cmnt(masm_, "[ Allocate context"); | 195 Comment cmnt(masm_, "[ Allocate context"); |
| 196 // Argument to NewContext is the function, which is still in a1. | 196 // Argument to NewContext is the function, which is still in a1. |
| 197 bool need_write_barrier = true; | 197 bool need_write_barrier = true; |
| 198 int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; | 198 int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 199 if (info->scope()->is_script_scope()) { | 199 if (info->scope()->is_script_scope()) { |
| 200 __ push(a1); | 200 __ push(a1); |
| 201 __ Push(info->scope()->GetScopeInfo(info->isolate())); | 201 __ Push(info->scope()->GetScopeInfo(info->isolate())); |
| 202 __ CallRuntime(Runtime::kNewScriptContext, 2); | 202 __ CallRuntime(Runtime::kNewScriptContext, 2); |
| 203 PrepareForBailoutForId(BailoutId::ScriptContext(), TOS_REG); |
| 203 } else if (slots <= FastNewContextStub::kMaximumSlots) { | 204 } else if (slots <= FastNewContextStub::kMaximumSlots) { |
| 204 FastNewContextStub stub(isolate(), slots); | 205 FastNewContextStub stub(isolate(), slots); |
| 205 __ CallStub(&stub); | 206 __ CallStub(&stub); |
| 206 // Result of FastNewContextStub is always in new space. | 207 // Result of FastNewContextStub is always in new space. |
| 207 need_write_barrier = false; | 208 need_write_barrier = false; |
| 208 } else { | 209 } else { |
| 209 __ push(a1); | 210 __ push(a1); |
| 210 __ CallRuntime(Runtime::kNewFunctionContext, 1); | 211 __ CallRuntime(Runtime::kNewFunctionContext, 1); |
| 211 } | 212 } |
| 212 function_in_register_a1 = false; | 213 function_in_register_a1 = false; |
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| 234 cp, target.offset(), a0, a3, kRAHasBeenSaved, kDontSaveFPRegs); | 235 cp, target.offset(), a0, a3, kRAHasBeenSaved, kDontSaveFPRegs); |
| 235 } else if (FLAG_debug_code) { | 236 } else if (FLAG_debug_code) { |
| 236 Label done; | 237 Label done; |
| 237 __ JumpIfInNewSpace(cp, a0, &done); | 238 __ JumpIfInNewSpace(cp, a0, &done); |
| 238 __ Abort(kExpectedNewSpaceObject); | 239 __ Abort(kExpectedNewSpaceObject); |
| 239 __ bind(&done); | 240 __ bind(&done); |
| 240 } | 241 } |
| 241 } | 242 } |
| 242 } | 243 } |
| 243 } | 244 } |
| 245 PrepareForBailoutForId(BailoutId::FunctionContext(), NO_REGISTERS); |
| 244 | 246 |
| 245 PrepareForBailoutForId(BailoutId::Prologue(), NO_REGISTERS); | |
| 246 // Function register is trashed in case we bailout here. But since that | 247 // Function register is trashed in case we bailout here. But since that |
| 247 // could happen only when we allocate a context the value of | 248 // could happen only when we allocate a context the value of |
| 248 // |function_in_register_a1| is correct. | 249 // |function_in_register_a1| is correct. |
| 249 | 250 |
| 250 // Possibly set up a local binding to the this function which is used in | 251 // Possibly set up a local binding to the this function which is used in |
| 251 // derived constructors with super calls. | 252 // derived constructors with super calls. |
| 252 Variable* this_function_var = scope()->this_function_var(); | 253 Variable* this_function_var = scope()->this_function_var(); |
| 253 if (this_function_var != nullptr) { | 254 if (this_function_var != nullptr) { |
| 254 Comment cmnt(masm_, "[ This function"); | 255 Comment cmnt(masm_, "[ This function"); |
| 255 if (!function_in_register_a1) { | 256 if (!function_in_register_a1) { |
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| 5189 reinterpret_cast<uint32_t>( | 5190 reinterpret_cast<uint32_t>( |
| 5190 isolate->builtins()->OsrAfterStackCheck()->entry())); | 5191 isolate->builtins()->OsrAfterStackCheck()->entry())); |
| 5191 return OSR_AFTER_STACK_CHECK; | 5192 return OSR_AFTER_STACK_CHECK; |
| 5192 } | 5193 } |
| 5193 | 5194 |
| 5194 | 5195 |
| 5195 } // namespace internal | 5196 } // namespace internal |
| 5196 } // namespace v8 | 5197 } // namespace v8 |
| 5197 | 5198 |
| 5198 #endif // V8_TARGET_ARCH_MIPS | 5199 #endif // V8_TARGET_ARCH_MIPS |
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