runtime/vm/stack_frame_arm.h - Issue 15110003: Make deoptimization architecture dependent (it depends on the frame layout).

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Side by Side Diff: runtime/vm/stack_frame_arm.h

Issue 15110003: Make deoptimization architecture dependent (it depends on the frame layout). (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 7 years, 7 months ago

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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_ARM_H_	5 #ifndef VM_STACK_FRAME_ARM_H_

6 #define VM_STACK_FRAME_ARM_H_	6 #define VM_STACK_FRAME_ARM_H_

7	7

8 namespace dart {	8 namespace dart {

9	9

10 /* ARM Dart Frame Layout	10 /* ARM Dart Frame Layout

11	11

12 \| \| <- TOS	12 \| \| <- TOS

13 Callee frame \| ... \|	13 Callee frame \| ... \|

14 \| current LR \| (PC of current frame)	14 \| saved PP \| (PP of current frame)

	15 \| saved FP \| (FP of current frame)

	16 \| saved LR \| (PC of current frame)

15 \| callee's PC marker \|	17 \| callee's PC marker \|

16 +--------------------+	18 +--------------------+

17 Current frame \| ... \| <- SP of current frame	19 Current frame \| ... \| <- SP of current frame

18 \| first local \|	20 \| first local \|

19 \| caller's PP \|	21 \| caller's PP \|

20 \| caller's FP \| <- FP of current frame	22 \| caller's FP \| <- FP of current frame

21 \| caller's LR \| (PC of caller frame)	23 \| caller's LR \| (PC of caller frame)

22 \| PC marker \| (current frame's code entry + offset)	24 \| PC marker \| (current frame's code entry + offset)

23 +--------------------+	25 +--------------------+

24 Caller frame \| last parameter \| <- SP of caller frame	26 Caller frame \| last parameter \| <- SP of caller frame

25 \| ... \|	27 \| ... \|

26 */	28 */

27	29

	30 static const int kDartFrameFixedSize = 4; // PP, FP, LR, PC marker.

28 static const int kSavedPcSlotFromSp = -2;	31 static const int kSavedPcSlotFromSp = -2;

29 static const int kFirstLocalSlotFromFp = -2;	32 static const int kFirstLocalSlotFromFp = -2;

	33 static const int kSavedCallerPpSlotFromFp = -1;

30 static const int kSavedCallerFpSlotFromFp = 0;	34 static const int kSavedCallerFpSlotFromFp = 0;

	35 static const int kSavedCallerPcSlotFromFp = 1;

31 static const int kPcMarkerSlotFromFp = 2;	36 static const int kPcMarkerSlotFromFp = 2;

32 static const int kParamEndSlotFromFp = 2; // Same slot as current pc marker.	37 static const int kParamEndSlotFromFp = 2; // One slot past last parameter.

33 static const int kCallerSpSlotFromFp = 3;	38 static const int kCallerSpSlotFromFp = 3;

34	39

35 // Entry and exit frame layout.	40 // Entry and exit frame layout.

36 static const int kSavedContextSlotFromEntryFp = -10;	41 static const int kSavedContextSlotFromEntryFp = -10;

37 static const int kExitLinkSlotFromEntryFp = -9;	42 static const int kExitLinkSlotFromEntryFp = -9;

38	43

39 } // namespace dart	44 } // namespace dart

40	45

41 #endif // VM_STACK_FRAME_ARM_H_	46 #endif // VM_STACK_FRAME_ARM_H_

42	47

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