Eliot Miranda uploaded a new version of Cog to project VM Maker:
http://source.squeak.org/VMMaker/Cog-eem.200.mcz==================== Summary ====================
Name: Cog-eem.200
Author: eem
Time: 28 August 2014, 3:11:42.019 pm
UUID: 336d4bed-fa80-49c8-8634-0c9ec36f8b1d
Ancestors: Cog-eem.199
SpurBootstrap:
Fix ClassBuilder>>format:variable:words:pointers:weak: for
non-pointer words.
=============== Diff against Cog-eem.199 ===============
Item was changed:
----- Method: SpurBootstrap class>>ClassBuilderPROTOTYPEformat:variable:words:pointers:weak: (in category 'method prototypes') -----
+ ClassBuilderPROTOTYPEformat: nInstVars variable: isVar words: is32BitWords pointers: isPointers weak: isWeak
- ClassBuilderPROTOTYPEformat: nInstVars variable: isVar words: isWords pointers: isPointers weak: isWeak
"Compute the format for the given instance specfication.
Above Cog Spur the class format is
<5 bits inst spec><16 bits inst size>
where the 5-bit inst spec is
0 = 0 sized objects (UndefinedObject True False et al)
1 = non-indexable objects with inst vars (Point et al)
2 = indexable objects with no inst vars (Array et al)
3 = indexable objects with inst vars (MethodContext AdditionalMethodState et al)
4 = weak indexable objects with inst vars (WeakArray et al)
5 = weak non-indexable objects with inst vars (ephemerons) (Ephemeron)
6 = unused
7 = immediates (SmallInteger, Character)
8 = unused
9 = reserved for 64-bit indexable
10-11 = 32-bit indexable (Bitmap)
12-15 = 16-bit indexable
16-23 = 8-bit indexable
24-31 = compiled methods (CompiledMethod)"
| instSpec |
instSpec := isWeak
ifTrue:
[isVar
ifTrue: [4]
ifFalse: [5]]
ifFalse:
[isPointers
ifTrue:
[isVar
ifTrue: [nInstVars > 0 ifTrue: [3] ifFalse: [2]]
ifFalse: [nInstVars > 0 ifTrue: [1] ifFalse: [0]]]
ifFalse:
[isVar
+ ifTrue: [is32BitWords ifTrue: [10] ifFalse: [16]]
- ifTrue: [isWords ifTrue: [12] ifFalse: [16]]
ifFalse: [7]]].
^(instSpec bitShift: 16) + nInstVars!
Locked
