runtime/vm/stack_frame_x64.h - Issue 22825023: Uses an object pool on x64

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Issue 22825023: Uses an object pool on x64 (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 7 years, 3 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_X64_H_	5 #ifndef VM_STACK_FRAME_X64_H_

6 #define VM_STACK_FRAME_X64_H_	6 #define VM_STACK_FRAME_X64_H_

7	7

8 namespace dart {	8 namespace dart {

9	9

10 /* X64 Dart Frame Layout	10 /* X64 Dart Frame Layout

11	11

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

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

	14 \| saved PP \|

	15 \| callee's PC marker \|

14 \| saved RBP \| (RBP of current frame)	16 \| saved RBP \| (RBP of current frame)

15 \| saved PC \| (PC of current frame)	17 \| saved PC \| (PC of current frame)

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

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

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

	21 \| caller's PP \|

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

20 \| caller's RBP \| <- RBP of current frame	23 \| caller's RBP \| <- RBP of current frame

21 \| caller's ret addr \| (PC of caller frame)	24 \| caller's ret addr \| (PC of caller frame)

22 +--------------------+	25 +--------------------+

23 Caller frame \| last parameter \| <- RSP of caller frame	26 Caller frame \| last parameter \| <- RSP of caller frame

24 \| ... \|	27 \| ... \|

25 */	28 */

26	29

27 static const int kDartFrameFixedSize = 3; // PC marker, RBP, PC.	30 static const int kDartFrameFixedSize = 4; // PC marker, RBP, PP, PC.

28 static const int kSavedPcSlotFromSp = -1;	31 static const int kSavedPcSlotFromSp = -1;

29 static const int kFirstLocalSlotFromFp = -2;	32

	33 static const int kFirstLocalSlotFromFp = -3;

	34 static const int kSavedCallerPpSlotFromFp = -2;

30 static const int kPcMarkerSlotFromFp = -1;	35 static const int kPcMarkerSlotFromFp = -1;

31 static const int kSavedCallerFpSlotFromFp = 0;	36 static const int kSavedCallerFpSlotFromFp = 0;

32 static const int kSavedCallerPcSlotFromFp = 1;	37 static const int kSavedCallerPcSlotFromFp = 1;

	38

33 static const int kParamEndSlotFromFp = 1; // One slot past last parameter.	39 static const int kParamEndSlotFromFp = 1; // One slot past last parameter.

34 static const int kCallerSpSlotFromFp = 2;	40 static const int kCallerSpSlotFromFp = 2;

35	41 static const int kSavedAboveReturnAddress = 3; // Saved above return address.

36 // No pool pointer on X64 (indicated by aliasing saved fp).

37 static const int kSavedCallerPpSlotFromFp = kSavedCallerFpSlotFromFp;

38	42

39 // Entry and exit frame layout.	43 // Entry and exit frame layout.

40 static const int kSavedContextSlotFromEntryFp = -9;	44 static const int kSavedContextSlotFromEntryFp = -10;

41 static const int kExitLinkSlotFromEntryFp = -8;	45 static const int kExitLinkSlotFromEntryFp = -9;

42	46

43 } // namespace dart	47 } // namespace dart

44	48

45 #endif // VM_STACK_FRAME_X64_H_	49 #endif // VM_STACK_FRAME_X64_H_

46	50

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