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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/assembler.h" | 5 #include "src/assembler.h" |
6 #include "src/macro-assembler.h" | 6 #include "src/macro-assembler.h" |
7 | 7 |
8 #include "src/compiler/linkage.h" | 8 #include "src/compiler/linkage.h" |
9 | 9 |
10 #include "src/zone.h" | 10 #include "src/zone.h" |
11 | 11 |
12 namespace v8 { | 12 namespace v8 { |
13 namespace internal { | 13 namespace internal { |
14 namespace compiler { | 14 namespace compiler { |
15 | 15 |
16 namespace { | 16 namespace { |
17 LinkageLocation regloc(Register reg) { | 17 LinkageLocation regloc(Register reg, MachineType type) { |
18 return LinkageLocation::ForRegister(reg.code()); | 18 return LinkageLocation::ForRegister(reg.code(), type); |
19 } | 19 } |
20 | 20 |
21 | 21 |
22 // Platform-specific configuration for C calling convention. | 22 // Platform-specific configuration for C calling convention. |
23 #if V8_TARGET_ARCH_IA32 | 23 #if V8_TARGET_ARCH_IA32 |
24 // =========================================================================== | 24 // =========================================================================== |
25 // == ia32 =================================================================== | 25 // == ia32 =================================================================== |
26 // =========================================================================== | 26 // =========================================================================== |
27 #define CALLEE_SAVE_REGISTERS esi.bit() | edi.bit() | ebx.bit() | 27 #define CALLEE_SAVE_REGISTERS esi.bit() | edi.bit() | ebx.bit() |
28 | 28 |
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175 // This method should not be called on unknown architectures. | 175 // This method should not be called on unknown architectures. |
176 V8_Fatal(__FILE__, __LINE__, | 176 V8_Fatal(__FILE__, __LINE__, |
177 "requested C call descriptor on unsupported architecture"); | 177 "requested C call descriptor on unsupported architecture"); |
178 return nullptr; | 178 return nullptr; |
179 #endif | 179 #endif |
180 | 180 |
181 // Add return location(s). | 181 // Add return location(s). |
182 CHECK(locations.return_count_ <= 2); | 182 CHECK(locations.return_count_ <= 2); |
183 | 183 |
184 if (locations.return_count_ > 0) { | 184 if (locations.return_count_ > 0) { |
185 locations.AddReturn(regloc(kReturnRegister0)); | 185 locations.AddReturn(regloc(kReturnRegister0, msig->GetReturn(0))); |
186 } | 186 } |
187 if (locations.return_count_ > 1) { | 187 if (locations.return_count_ > 1) { |
188 locations.AddReturn(regloc(kReturnRegister1)); | 188 locations.AddReturn(regloc(kReturnRegister1, msig->GetReturn(1))); |
189 } | 189 } |
190 | 190 |
191 const int parameter_count = static_cast<int>(msig->parameter_count()); | 191 const int parameter_count = static_cast<int>(msig->parameter_count()); |
192 | 192 |
193 #ifdef PARAM_REGISTERS | 193 #ifdef PARAM_REGISTERS |
194 static const Register kParamRegisters[] = {PARAM_REGISTERS}; | 194 static const Register kParamRegisters[] = {PARAM_REGISTERS}; |
195 static const int kParamRegisterCount = | 195 static const int kParamRegisterCount = |
196 static_cast<int>(arraysize(kParamRegisters)); | 196 static_cast<int>(arraysize(kParamRegisters)); |
197 #else | 197 #else |
198 static const Register* kParamRegisters = nullptr; | 198 static const Register* kParamRegisters = nullptr; |
199 static const int kParamRegisterCount = 0; | 199 static const int kParamRegisterCount = 0; |
200 #endif | 200 #endif |
201 | 201 |
202 #ifdef STACK_SHADOW_WORDS | 202 #ifdef STACK_SHADOW_WORDS |
203 int stack_offset = STACK_SHADOW_WORDS; | 203 int stack_offset = STACK_SHADOW_WORDS; |
204 #else | 204 #else |
205 int stack_offset = 0; | 205 int stack_offset = 0; |
206 #endif | 206 #endif |
207 // Add register and/or stack parameter(s). | 207 // Add register and/or stack parameter(s). |
208 for (int i = 0; i < parameter_count; i++) { | 208 for (int i = 0; i < parameter_count; i++) { |
209 if (i < kParamRegisterCount) { | 209 if (i < kParamRegisterCount) { |
210 locations.AddParam(regloc(kParamRegisters[i])); | 210 locations.AddParam(regloc(kParamRegisters[i], msig->GetParam(i))); |
211 } else { | 211 } else { |
212 locations.AddParam( | 212 locations.AddParam(LinkageLocation::ForCallerFrameSlot( |
213 LinkageLocation::ForCallerFrameSlot(-1 - stack_offset)); | 213 -1 - stack_offset, msig->GetParam(i))); |
214 stack_offset++; | 214 stack_offset++; |
215 } | 215 } |
216 } | 216 } |
217 | 217 |
218 #ifdef CALLEE_SAVE_REGISTERS | 218 #ifdef CALLEE_SAVE_REGISTERS |
219 const RegList kCalleeSaveRegisters = CALLEE_SAVE_REGISTERS; | 219 const RegList kCalleeSaveRegisters = CALLEE_SAVE_REGISTERS; |
220 #else | 220 #else |
221 const RegList kCalleeSaveRegisters = 0; | 221 const RegList kCalleeSaveRegisters = 0; |
222 #endif | 222 #endif |
223 | 223 |
224 #ifdef CALLEE_SAVE_FP_REGISTERS | 224 #ifdef CALLEE_SAVE_FP_REGISTERS |
225 const RegList kCalleeSaveFPRegisters = CALLEE_SAVE_FP_REGISTERS; | 225 const RegList kCalleeSaveFPRegisters = CALLEE_SAVE_FP_REGISTERS; |
226 #else | 226 #else |
227 const RegList kCalleeSaveFPRegisters = 0; | 227 const RegList kCalleeSaveFPRegisters = 0; |
228 #endif | 228 #endif |
229 | 229 |
230 // The target for C calls is always an address (i.e. machine pointer). | 230 // The target for C calls is always an address (i.e. machine pointer). |
231 MachineType target_type = MachineType::Pointer(); | 231 MachineType target_type = MachineType::Pointer(); |
232 LinkageLocation target_loc = LinkageLocation::ForAnyRegister(); | 232 LinkageLocation target_loc = LinkageLocation::ForAnyRegister(target_type); |
233 CallDescriptor::Flags flags = CallDescriptor::kUseNativeStack; | 233 CallDescriptor::Flags flags = CallDescriptor::kUseNativeStack; |
234 if (set_initialize_root_flag) { | 234 if (set_initialize_root_flag) { |
235 flags |= CallDescriptor::kInitializeRootRegister; | 235 flags |= CallDescriptor::kInitializeRootRegister; |
236 } | 236 } |
237 | 237 |
238 return new (zone) CallDescriptor( // -- | 238 return new (zone) CallDescriptor( // -- |
239 CallDescriptor::kCallAddress, // kind | 239 CallDescriptor::kCallAddress, // kind |
240 target_type, // target MachineType | 240 target_type, // target MachineType |
241 target_loc, // target location | 241 target_loc, // target location |
242 msig, // machine_sig | |
243 locations.Build(), // location_sig | 242 locations.Build(), // location_sig |
244 0, // stack_parameter_count | 243 0, // stack_parameter_count |
245 Operator::kNoProperties, // properties | 244 Operator::kNoProperties, // properties |
246 kCalleeSaveRegisters, // callee-saved registers | 245 kCalleeSaveRegisters, // callee-saved registers |
247 kCalleeSaveFPRegisters, // callee-saved fp regs | 246 kCalleeSaveFPRegisters, // callee-saved fp regs |
248 flags, "c-call"); | 247 flags, "c-call"); |
249 } | 248 } |
250 | 249 |
251 } // namespace compiler | 250 } // namespace compiler |
252 } // namespace internal | 251 } // namespace internal |
253 } // namespace v8 | 252 } // namespace v8 |
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