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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_H_ | 5 #ifndef V8_COMPILER_LINKAGE_H_ |
6 #define V8_COMPILER_LINKAGE_H_ | 6 #define V8_COMPILER_LINKAGE_H_ |
7 | 7 |
8 #include "src/base/flags.h" | 8 #include "src/base/flags.h" |
9 #include "src/compiler/frame.h" | 9 #include "src/compiler/frame.h" |
10 #include "src/compiler/machine-type.h" | 10 #include "src/compiler/machine-type.h" |
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306 LinkageLocation GetReturnLocation() const { | 306 LinkageLocation GetReturnLocation() const { |
307 return incoming_->GetReturnLocation(0); | 307 return incoming_->GetReturnLocation(0); |
308 } | 308 } |
309 | 309 |
310 // Get the machine type of this function's return value. | 310 // Get the machine type of this function's return value. |
311 MachineType GetReturnType() const { return incoming_->GetReturnType(0); } | 311 MachineType GetReturnType() const { return incoming_->GetReturnType(0); } |
312 | 312 |
313 // Get the frame offset for a given spill slot. The location depends on the | 313 // Get the frame offset for a given spill slot. The location depends on the |
314 // calling convention and the specific frame layout, and may thus be | 314 // calling convention and the specific frame layout, and may thus be |
315 // architecture-specific. Negative spill slots indicate arguments on the | 315 // architecture-specific. Negative spill slots indicate arguments on the |
316 // caller's frame. The {extra} parameter indicates an additional offset from | 316 // caller's frame. |
317 // the frame offset, e.g. to index into part of a double slot. | 317 FrameOffset GetFrameOffset(int spill_slot, Frame* frame) const; |
318 FrameOffset GetFrameOffset(int spill_slot, Frame* frame, int extra = 0) const; | |
319 | 318 |
320 static int FrameStateInputCount(Runtime::FunctionId function); | 319 static int FrameStateInputCount(Runtime::FunctionId function); |
321 | 320 |
322 // Get the location where an incoming OSR value is stored. | 321 // Get the location where an incoming OSR value is stored. |
323 LinkageLocation GetOsrValueLocation(int index) const; | 322 LinkageLocation GetOsrValueLocation(int index) const; |
324 | 323 |
325 // A special parameter index for JSCalls that represents the closure. | 324 // A special parameter index for JSCalls that represents the closure. |
326 static const int kJSFunctionCallClosureParamIndex = -1; | 325 static const int kJSFunctionCallClosureParamIndex = -1; |
327 | 326 |
328 // A special {OsrValue} index to indicate the context spill slot. | 327 // A special {OsrValue} index to indicate the context spill slot. |
329 static const int kOsrContextSpillSlotIndex = -1; | 328 static const int kOsrContextSpillSlotIndex = -1; |
330 | 329 |
331 // Special parameter indices used to pass fixed register data through | 330 // Special parameter indices used to pass fixed register data through |
332 // interpreter dispatches. | 331 // interpreter dispatches. |
333 static const int kInterpreterBytecodeOffsetParameter = 0; | 332 static const int kInterpreterBytecodeOffsetParameter = 0; |
334 static const int kInterpreterBytecodeArrayParameter = 1; | 333 static const int kInterpreterBytecodeArrayParameter = 1; |
335 static const int kInterpreterDispatchTableParameter = 2; | 334 static const int kInterpreterDispatchTableParameter = 2; |
336 | 335 |
337 private: | 336 private: |
338 CallDescriptor* const incoming_; | 337 CallDescriptor* const incoming_; |
339 | 338 |
340 DISALLOW_COPY_AND_ASSIGN(Linkage); | 339 DISALLOW_COPY_AND_ASSIGN(Linkage); |
341 }; | 340 }; |
342 | 341 |
343 } // namespace compiler | 342 } // namespace compiler |
344 } // namespace internal | 343 } // namespace internal |
345 } // namespace v8 | 344 } // namespace v8 |
346 | 345 |
347 #endif // V8_COMPILER_LINKAGE_H_ | 346 #endif // V8_COMPILER_LINKAGE_H_ |
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