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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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155 { Comment cmnt(masm_, "[ Allocate locals"); | 155 { Comment cmnt(masm_, "[ Allocate locals"); |
156 int locals_count = info->scope()->num_stack_slots(); | 156 int locals_count = info->scope()->num_stack_slots(); |
157 // Generators allocate locals, if any, in context slots. | 157 // Generators allocate locals, if any, in context slots. |
158 DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0); | 158 DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0); |
159 if (locals_count > 0) { | 159 if (locals_count > 0) { |
160 if (locals_count >= 128) { | 160 if (locals_count >= 128) { |
161 Label ok; | 161 Label ok; |
162 __ Subu(t5, sp, Operand(locals_count * kPointerSize)); | 162 __ Subu(t5, sp, Operand(locals_count * kPointerSize)); |
163 __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); | 163 __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); |
164 __ Branch(&ok, hs, t5, Operand(a2)); | 164 __ Branch(&ok, hs, t5, Operand(a2)); |
165 __ InvokeBuiltin(Context::STACK_OVERFLOW_BUILTIN_INDEX, CALL_FUNCTION); | 165 __ CallRuntime(Runtime::kThrowStackOverflow, 0); |
166 __ bind(&ok); | 166 __ bind(&ok); |
167 } | 167 } |
168 __ LoadRoot(t5, Heap::kUndefinedValueRootIndex); | 168 __ LoadRoot(t5, Heap::kUndefinedValueRootIndex); |
169 int kMaxPushes = FLAG_optimize_for_size ? 4 : 32; | 169 int kMaxPushes = FLAG_optimize_for_size ? 4 : 32; |
170 if (locals_count >= kMaxPushes) { | 170 if (locals_count >= kMaxPushes) { |
171 int loop_iterations = locals_count / kMaxPushes; | 171 int loop_iterations = locals_count / kMaxPushes; |
172 __ li(a2, Operand(loop_iterations)); | 172 __ li(a2, Operand(loop_iterations)); |
173 Label loop_header; | 173 Label loop_header; |
174 __ bind(&loop_header); | 174 __ bind(&loop_header); |
175 // Do pushes. | 175 // Do pushes. |
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5331 reinterpret_cast<uint32_t>( | 5331 reinterpret_cast<uint32_t>( |
5332 isolate->builtins()->OsrAfterStackCheck()->entry())); | 5332 isolate->builtins()->OsrAfterStackCheck()->entry())); |
5333 return OSR_AFTER_STACK_CHECK; | 5333 return OSR_AFTER_STACK_CHECK; |
5334 } | 5334 } |
5335 | 5335 |
5336 | 5336 |
5337 } // namespace internal | 5337 } // namespace internal |
5338 } // namespace v8 | 5338 } // namespace v8 |
5339 | 5339 |
5340 #endif // V8_TARGET_ARCH_MIPS | 5340 #endif // V8_TARGET_ARCH_MIPS |
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