OLD | NEW |
1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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/compiler/frame.h" | 5 #include "src/compiler/frame.h" |
6 | 6 |
7 #include "src/compiler/linkage.h" | 7 #include "src/compiler/linkage.h" |
8 #include "src/compiler/register-allocator.h" | 8 #include "src/compiler/register-allocator.h" |
9 #include "src/macro-assembler.h" | 9 #include "src/macro-assembler.h" |
10 | 10 |
11 namespace v8 { | 11 namespace v8 { |
12 namespace internal { | 12 namespace internal { |
13 namespace compiler { | 13 namespace compiler { |
14 | 14 |
15 Frame::Frame(int fixed_frame_size_in_slots) | 15 Frame::Frame(int fixed_frame_size_in_slots, const CallDescriptor* descriptor) |
16 : frame_slot_count_(fixed_frame_size_in_slots), | 16 : needs_frame_((descriptor != nullptr) && |
17 outgoing_parameter_slot_count_(0), | 17 descriptor->RequiresFrameAsIncoming()), |
| 18 frame_slot_count_(fixed_frame_size_in_slots), |
18 callee_saved_slot_count_(0), | 19 callee_saved_slot_count_(0), |
19 spill_slot_count_(0), | 20 spill_slot_count_(0), |
20 allocated_registers_(NULL), | 21 allocated_registers_(NULL), |
21 allocated_double_registers_(NULL) {} | 22 allocated_double_registers_(NULL) {} |
22 | 23 |
| 24 |
| 25 void FrameAccessState::SetFrameAccessToDefault() { |
| 26 if (frame()->needs_frame() && !FLAG_turbo_sp_frame_access) { |
| 27 SetFrameAccessToFP(); |
| 28 } else { |
| 29 SetFrameAccessToSP(); |
| 30 } |
| 31 } |
| 32 |
| 33 |
| 34 FrameOffset FrameAccessState::GetFrameOffset(int spill_slot) const { |
| 35 const int offset = |
| 36 (StandardFrameConstants::kFixedSlotCountAboveFp - spill_slot - 1) * |
| 37 kPointerSize; |
| 38 if (access_frame_with_fp()) { |
| 39 DCHECK(frame()->needs_frame()); |
| 40 return FrameOffset::FromFramePointer(offset); |
| 41 } else { |
| 42 // No frame. Retrieve all parameters relative to stack pointer. |
| 43 int sp_offset = |
| 44 offset + ((frame()->GetSpToFpSlotCount() + sp_delta()) * kPointerSize); |
| 45 return FrameOffset::FromStackPointer(sp_offset); |
| 46 } |
| 47 } |
| 48 |
| 49 |
23 } // namespace compiler | 50 } // namespace compiler |
24 } // namespace internal | 51 } // namespace internal |
25 } // namespace v8 | 52 } // namespace v8 |
OLD | NEW |