[Vm-dev] VM Maker: VMMaker.oscog-nice.2073.mcz
commits at source.squeak.org
commits at source.squeak.org
Thu Jan 5 20:01:05 UTC 2017
Nicolas Cellier uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-nice.2073.mcz
==================== Summary ====================
Name: VMMaker.oscog-nice.2073
Author: nice
Time: 5 January 2017, 8:59:38.809001 pm
UUID: ea25b651-c0f2-46a4-aae0-8acd00e7c6c2
Ancestors: VMMaker.oscog-rsf.2072
Fix access to 64 bits int from 32 bit VM in primitiveFFIIntegerAtPut
=============== Diff against VMMaker.oscog-rsf.2072 ===============
Item was changed:
----- Method: ThreadedFFIPlugin>>primitiveFFIIntegerAtPut (in category 'primitives') -----
primitiveFFIIntegerAtPut
"Store a (signed or unsigned) n byte integer at the given byte offset
in the receiver, using the platform's endianness."
| isSigned byteSize byteOffset rcvr addr value max valueOop |
<var: 'value' type: #sqLong>
<var: 'max' type: #sqLong>
<export: true>
<inline: false>
isSigned := interpreterProxy booleanValueOf: (interpreterProxy stackValue: 0).
byteSize := interpreterProxy stackIntegerValue: 1.
valueOop := interpreterProxy stackValue: 2.
byteOffset := interpreterProxy stackIntegerValue: 3.
rcvr := interpreterProxy stackObjectValue: 4.
interpreterProxy failed ifTrue:[^0].
(byteOffset > 0
and: [(byteSize between: 1 and: 8)
and: [(byteSize bitAnd: byteSize - 1) = 0 "a.k.a. isPowerOfTwo"]]) ifFalse:
[^interpreterProxy primitiveFail].
addr := self ffiAddressOf: rcvr startingAt: byteOffset size: byteSize.
interpreterProxy failed ifTrue:[^0].
isSigned
+ ifTrue:[value := interpreterProxy signed64BitValueOf: valueOop]
+ ifFalse:[value := interpreterProxy positive64BitValueOf: valueOop].
- ifTrue:[value := interpreterProxy signedMachineIntegerValueOf: valueOop]
- ifFalse:[value := interpreterProxy positiveMachineIntegerValueOf: valueOop].
interpreterProxy failed ifTrue:[^0].
+ byteSize < 8 ifTrue:
- byteSize < BytesPerWord ifTrue:
[isSigned
ifTrue:
[max := 1 asUnsignedLongLong << (8 * byteSize - 1).
(value >= (0 - max) and: [value < max]) ifFalse: [^interpreterProxy primitiveFail]]
ifFalse:
[value asUnsignedLongLong < (1 asUnsignedLongLong << (8 * byteSize)) ifFalse: [^interpreterProxy primitiveFail]]].
byteSize <= 2
ifTrue:
[byteSize = 1
ifTrue: [interpreterProxy byteAt: addr put: value]
ifFalse: [interpreterProxy shortAt: addr put: value]]
ifFalse:
[byteSize = 4
ifTrue: [interpreterProxy long32At: addr put: value]
ifFalse: [interpreterProxy long64At: addr put: value]].
^interpreterProxy pop: 5 thenPush: valueOop!
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