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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef VM_STACK_FRAME_MIPS_H_ | 5 #ifndef VM_STACK_FRAME_MIPS_H_ |
| 6 #define VM_STACK_FRAME_MIPS_H_ | 6 #define VM_STACK_FRAME_MIPS_H_ |
| 7 | 7 |
| 8 namespace dart { | 8 namespace dart { |
| 9 | 9 |
| 10 /* MIPS Dart Frame Layout | 10 /* MIPS Dart Frame Layout |
| 11 | 11 |
| 12 | | <- TOS | 12 | | <- TOS |
| 13 Callee frame | ... | | 13 Callee frame | ... | |
| 14 | current RA | (PC of current frame) | 14 | current RA | (PC of current frame) |
| 15 | callee's PC marker | | 15 | callee's PC marker | |
| 16 +--------------------+ | 16 +--------------------+ |
| 17 Current frame | ... T| <- SP of current frame | 17 Current frame | ... T| <- SP of current frame |
| 18 | first local T| | 18 | first local T| |
| 19 | caller's PP T| | 19 | caller's PP T| |
| 20 | CODE_REG T| (current frame's code object) | |
| 21 | caller's FP | <- FP of current frame | 20 | caller's FP | <- FP of current frame |
| 22 | caller's RA | (PC of caller frame) | 21 | caller's RA | (PC of caller frame) |
| 22 | PC marker | (current frame's code entry + offset) |
| 23 +--------------------+ | 23 +--------------------+ |
| 24 Caller frame | last parameter | <- SP of caller frame | 24 Caller frame | last parameter | <- SP of caller frame |
| 25 | ... | | 25 | ... | |
| 26 | 26 |
| 27 T against a slot indicates it needs to be traversed during GC. | 27 T against a slot indicates it needs to be traversed during GC. |
| 28 */ | 28 */ |
| 29 | 29 |
| 30 static const int kDartFrameFixedSize = 4; // PP, FP, RA, PC marker. | 30 static const int kDartFrameFixedSize = 4; // PP, FP, RA, PC marker. |
| 31 static const int kSavedPcSlotFromSp = -1; | 31 static const int kSavedPcSlotFromSp = -2; |
| 32 | 32 |
| 33 static const int kFirstObjectSlotFromFp = -1; // Used by GC to traverse stack. | 33 static const int kFirstObjectSlotFromFp = -1; // Used by GC to traverse stack. |
| 34 | 34 |
| 35 static const int kFirstLocalSlotFromFp = -3; | 35 static const int kFirstLocalSlotFromFp = -2; |
| 36 static const int kSavedCallerPpSlotFromFp = -2; | 36 static const int kSavedCallerPpSlotFromFp = -1; |
| 37 static const int kPcMarkerSlotFromFp = -1; | |
| 38 static const int kSavedCallerFpSlotFromFp = 0; | 37 static const int kSavedCallerFpSlotFromFp = 0; |
| 39 static const int kSavedCallerPcSlotFromFp = 1; | 38 static const int kSavedCallerPcSlotFromFp = 1; |
| 40 static const int kParamEndSlotFromFp = 1; // One slot past last parameter. | 39 static const int kPcMarkerSlotFromFp = 2; |
| 41 static const int kCallerSpSlotFromFp = 2; | 40 static const int kParamEndSlotFromFp = 2; // One slot past last parameter. |
| 41 static const int kCallerSpSlotFromFp = 3; |
| 42 | 42 |
| 43 // Entry and exit frame layout. | 43 // Entry and exit frame layout. |
| 44 static const int kExitLinkSlotFromEntryFp = -23; | 44 static const int kExitLinkSlotFromEntryFp = -23; |
| 45 | 45 |
| 46 } // namespace dart | 46 } // namespace dart |
| 47 | 47 |
| 48 #endif // VM_STACK_FRAME_MIPS_H_ | 48 #endif // VM_STACK_FRAME_MIPS_H_ |
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Chromium Code Reviews
Issue 1343373003:
Revert "VM: New calling convention for generated code." (Closed)
Base URL: git@github.com:dart-lang/sdk.git@master