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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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/code-stubs.h" | 5 #include "src/code-stubs.h" |
6 #include "src/compiler.h" | 6 #include "src/compiler.h" |
7 #include "src/compiler/common-operator.h" | 7 #include "src/compiler/common-operator.h" |
8 #include "src/compiler/frame.h" | 8 #include "src/compiler/frame.h" |
9 #include "src/compiler/linkage.h" | 9 #include "src/compiler/linkage.h" |
10 #include "src/compiler/node.h" | 10 #include "src/compiler/node.h" |
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140 // plus the receiver. | 140 // plus the receiver. |
141 SharedFunctionInfo* shared = info->closure()->shared(); | 141 SharedFunctionInfo* shared = info->closure()->shared(); |
142 return GetJSCallDescriptor(zone, info->is_osr(), | 142 return GetJSCallDescriptor(zone, info->is_osr(), |
143 1 + shared->internal_formal_parameter_count(), | 143 1 + shared->internal_formal_parameter_count(), |
144 CallDescriptor::kNoFlags); | 144 CallDescriptor::kNoFlags); |
145 } | 145 } |
146 return NULL; // TODO(titzer): ? | 146 return NULL; // TODO(titzer): ? |
147 } | 147 } |
148 | 148 |
149 | 149 |
150 FrameOffset Linkage::GetFrameOffset(int spill_slot, Frame* frame) const { | |
151 bool has_frame = frame->GetSpillSlotCount() > 0 || | |
152 incoming_->IsJSFunctionCall() || | |
153 incoming_->kind() == CallDescriptor::kCallAddress; | |
154 const int offset = | |
155 (StandardFrameConstants::kFixedSlotCountAboveFp - spill_slot - 1) * | |
156 kPointerSize; | |
157 if (has_frame) { | |
158 return FrameOffset::FromFramePointer(offset); | |
159 } else { | |
160 // No frame. Retrieve all parameters relative to stack pointer. | |
161 DCHECK(spill_slot < 0); // Must be a parameter. | |
162 int sp_offset = offset + (frame->GetSpToFpSlotCount() * kPointerSize); | |
163 return FrameOffset::FromStackPointer(sp_offset); | |
164 } | |
165 } | |
166 | |
167 | |
168 // static | 150 // static |
169 int Linkage::FrameStateInputCount(Runtime::FunctionId function) { | 151 int Linkage::FrameStateInputCount(Runtime::FunctionId function) { |
170 // Most runtime functions need a FrameState. A few chosen ones that we know | 152 // Most runtime functions need a FrameState. A few chosen ones that we know |
171 // not to call into arbitrary JavaScript, not to throw, and not to deoptimize | 153 // not to call into arbitrary JavaScript, not to throw, and not to deoptimize |
172 // are blacklisted here and can be called without a FrameState. | 154 // are blacklisted here and can be called without a FrameState. |
173 switch (function) { | 155 switch (function) { |
174 case Runtime::kAllocateInTargetSpace: | 156 case Runtime::kAllocateInTargetSpace: |
175 case Runtime::kDateField: | 157 case Runtime::kDateField: |
176 case Runtime::kDefineClassMethod: // TODO(jarin): Is it safe? | 158 case Runtime::kDefineClassMethod: // TODO(jarin): Is it safe? |
177 case Runtime::kDefineGetterPropertyUnchecked: // TODO(jarin): Is it safe? | 159 case Runtime::kDefineGetterPropertyUnchecked: // TODO(jarin): Is it safe? |
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542 } else { | 524 } else { |
543 DCHECK(loc == regloc(kContextRegister)); | 525 DCHECK(loc == regloc(kContextRegister)); |
544 return LinkageLocation::ForCalleeFrameSlot(Frame::kContextSlot); | 526 return LinkageLocation::ForCalleeFrameSlot(Frame::kContextSlot); |
545 } | 527 } |
546 } | 528 } |
547 | 529 |
548 | 530 |
549 } // namespace compiler | 531 } // namespace compiler |
550 } // namespace internal | 532 } // namespace internal |
551 } // namespace v8 | 533 } // namespace v8 |
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