runtime/vm/constants_x64.h - Issue 14812005: Cleanup deoptimization code to make it architecture independent (in progress).

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Unified Diff: runtime/vm/constants_x64.h

Issue 14812005: Cleanup deoptimization code to make it architecture independent (in progress). (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 7 years, 8 months ago

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Index: runtime/vm/constants_x64.h

===================================================================

--- runtime/vm/constants_x64.h (revision 22382)

+++ runtime/vm/constants_x64.h (working copy)

@@ -99,11 +99,29 @@

const Register kStackTraceObjectReg = RDX;

+// TODO(regis): Move these constants to stack_frame_x64.h.

// Dart stack frame layout.

-static const int kLastParamSlotIndex = 2;

-static const int kFirstLocalSlotIndex = -2;

+static const int kLastParamSlotIndex = 2; // From fp.

+static const int kFirstLocalSlotIndex = -2; // From fp.

+static const int kPcSlotIndexFromSp = -1;

+/* X64 Dart Frame Layout

+ | | <- TOS

+Callee frame | ... |

+ | current ret addr | (PC of current frame)

+ +-------------------+

+Current frame | ... | <- RSP of current frame

+ | first local |

+ | PC Marker | (current frame's code entry)

+ | caller's RBP | <- RBP of current frame

+ | caller's ret addr | (PC of caller frame)

+ +-------------------+

+Caller frame | last parameter |

+ | ... |

+*/

enum ScaleFactor {

TIMES_1 = 0,

TIMES_2 = 1,

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