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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 #ifndef V8_COMPILER_LINKAGE_IMPL_H_ | 5 #ifndef V8_COMPILER_LINKAGE_IMPL_H_ |
6 #define V8_COMPILER_LINKAGE_IMPL_H_ | 6 #define V8_COMPILER_LINKAGE_IMPL_H_ |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 namespace compiler { | 10 namespace compiler { |
11 | 11 |
12 class LinkageHelper { | 12 class LinkageHelper { |
13 public: | 13 public: |
14 static LinkageLocation TaggedStackSlot(int index) { | 14 static LinkageLocation TaggedStackSlot(int index) { |
15 DCHECK(index < 0); | 15 DCHECK(index < 0); |
16 return LinkageLocation(kMachAnyTagged, index); | 16 return LinkageLocation(kMachAnyTagged, index); |
17 } | 17 } |
18 | 18 |
19 static LinkageLocation TaggedRegisterLocation(Register reg) { | 19 static LinkageLocation TaggedRegisterLocation(Register reg) { |
20 return LinkageLocation(kMachAnyTagged, Register::ToAllocationIndex(reg)); | 20 return LinkageLocation(kMachAnyTagged, Register::ToAllocationIndex(reg)); |
21 } | 21 } |
22 | 22 |
23 static inline LinkageLocation WordRegisterLocation(Register reg) { | 23 static inline LinkageLocation WordRegisterLocation(Register reg) { |
24 return LinkageLocation(MachineOperatorBuilder::pointer_rep(), | 24 return LinkageLocation(kMachPtr, Register::ToAllocationIndex(reg)); |
25 Register::ToAllocationIndex(reg)); | |
26 } | 25 } |
27 | 26 |
28 static LinkageLocation UnconstrainedRegister(MachineType rep) { | 27 static LinkageLocation UnconstrainedRegister(MachineType rep) { |
29 return LinkageLocation(rep, LinkageLocation::ANY_REGISTER); | 28 return LinkageLocation(rep, LinkageLocation::ANY_REGISTER); |
30 } | 29 } |
31 | 30 |
32 static const RegList kNoCalleeSaved = 0; | 31 static const RegList kNoCalleeSaved = 0; |
33 | 32 |
34 // TODO(turbofan): cache call descriptors for JSFunction calls. | 33 // TODO(turbofan): cache call descriptors for JSFunction calls. |
35 template <typename LinkageTraits> | 34 template <typename LinkageTraits> |
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173 | 172 |
174 template <typename LinkageTraits> | 173 template <typename LinkageTraits> |
175 static CallDescriptor* GetSimplifiedCDescriptor( | 174 static CallDescriptor* GetSimplifiedCDescriptor( |
176 Zone* zone, int num_params, MachineType return_type, | 175 Zone* zone, int num_params, MachineType return_type, |
177 const MachineType* param_types) { | 176 const MachineType* param_types) { |
178 LinkageLocation* locations = | 177 LinkageLocation* locations = |
179 zone->NewArray<LinkageLocation>(num_params + 2); | 178 zone->NewArray<LinkageLocation>(num_params + 2); |
180 int index = 0; | 179 int index = 0; |
181 locations[index++] = | 180 locations[index++] = |
182 TaggedRegisterLocation(LinkageTraits::ReturnValueReg()); | 181 TaggedRegisterLocation(LinkageTraits::ReturnValueReg()); |
183 locations[index++] = LinkageHelper::UnconstrainedRegister( | 182 locations[index++] = LinkageHelper::UnconstrainedRegister(kMachPtr); |
184 MachineOperatorBuilder::pointer_rep()); | |
185 // TODO(dcarney): test with lots of parameters. | 183 // TODO(dcarney): test with lots of parameters. |
186 int i = 0; | 184 int i = 0; |
187 for (; i < LinkageTraits::CRegisterParametersLength() && i < num_params; | 185 for (; i < LinkageTraits::CRegisterParametersLength() && i < num_params; |
188 i++) { | 186 i++) { |
189 locations[index++] = LinkageLocation( | 187 locations[index++] = LinkageLocation( |
190 param_types[i], | 188 param_types[i], |
191 Register::ToAllocationIndex(LinkageTraits::CRegisterParameter(i))); | 189 Register::ToAllocationIndex(LinkageTraits::CRegisterParameter(i))); |
192 } | 190 } |
193 for (; i < num_params; i++) { | 191 for (; i < num_params; i++) { |
194 locations[index++] = LinkageLocation(param_types[i], -1 - i); | 192 locations[index++] = LinkageLocation(param_types[i], -1 - i); |
195 } | 193 } |
196 return new (zone) CallDescriptor( | 194 return new (zone) CallDescriptor( |
197 CallDescriptor::kCallAddress, 1, num_params, num_params + 1, locations, | 195 CallDescriptor::kCallAddress, 1, num_params, num_params + 1, locations, |
198 Operator::kNoProperties, LinkageTraits::CCalleeSaveRegisters(), | 196 Operator::kNoProperties, LinkageTraits::CCalleeSaveRegisters(), |
199 CallDescriptor::kNoDeoptimization); // TODO(jarin) should deoptimize! | 197 CallDescriptor::kNoDeoptimization); // TODO(jarin) should deoptimize! |
200 } | 198 } |
201 }; | 199 }; |
202 } | 200 } |
203 } | 201 } |
204 } // namespace v8::internal::compiler | 202 } // namespace v8::internal::compiler |
205 | 203 |
206 #endif // V8_COMPILER_LINKAGE_IMPL_H_ | 204 #endif // V8_COMPILER_LINKAGE_IMPL_H_ |
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