[Vm-dev] VM Maker: VMMaker.oscog-rmacnak.1460.mcz
commits at source.squeak.org
commits at source.squeak.org
Tue Sep 22 05:16:16 UTC 2015
Ryan Macnak uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-rmacnak.1460.mcz
==================== Summary ====================
Name: VMMaker.oscog-rmacnak.1460
Author: rmacnak
Time: 21 September 2015, 10:15:06.87 pm
UUID: 1e805848-96e9-4317-9750-726ab918b8bc
Ancestors: VMMaker.oscog-eem.1459
Remove some hardcoded word sizes from Alien.
=============== Diff against VMMaker.oscog-eem.1459 ===============
Item was changed:
----- Method: IA32ABIPlugin>>primAllocateExecutablePage (in category 'primitives-memory management') -----
primAllocateExecutablePage
"Answer an Alien for an executable page; for thunks"
"primAllocateExecutablePage ^<Alien>
<primitive: 'primAllocateExecutablePage' error: errorCode module: 'IA32ABI'>"
| byteSize ptr mem alien |
<export: true>
<var: #byteSize type: 'long'>
<var: #ptr type: 'long *'>
<var: #mem type: 'void *'>
self cCode: 'mem = allocateExecutablePage(&byteSize)'
inSmalltalk: [self error: 'not yet implemented'. mem := 0. byteSize := 0].
mem = 0 ifTrue:
[^interpreterProxy primitiveFailFor: PrimErrNoCMemory].
alien := interpreterProxy
instantiateClass: interpreterProxy classAlien
+ indexableSize: 2 * interpreterProxy bytesPerOop.
- indexableSize: 8.
interpreterProxy failed ifTrue:
[^interpreterProxy primitiveFailFor: PrimErrNoMemory].
ptr := interpreterProxy firstIndexableField: alien.
ptr at: 0 put: 0 - byteSize. "indirect mem indicated by negative size. Slang doesn't grok negated"
ptr at: 1 put: (self cCoerce: mem to: 'long').
interpreterProxy methodReturnValue: alien!
Item was changed:
----- Method: IA32ABIPlugin>>primStrlenThroughPointerAtIndex (in category 'primitives-accessing') -----
primStrlenThroughPointerAtIndex
"Answer the number of non-null bytes starting at the byte addressed by
the 4-byte pointer at index."
"<Alien> strlenThroughPointerAt: index <Integer> ^<Integer>
<primitive: 'primStrlenThroughPointerAtIndex' error: errorCode module: 'IA32ABI'>"
| byteOffset rcvr ptr addr |
<export: true>
<var: #ptr type: #'char *'>
byteOffset := (interpreterProxy stackPositiveMachineIntegerValue: 0) - 1.
rcvr := interpreterProxy stackObjectValue: 1.
interpreterProxy failed ifTrue:
[^interpreterProxy primitiveFailFor: PrimErrBadArgument].
+ (self index: byteOffset length: interpreterProxy bytesPerOop inRange: rcvr) ifFalse:
- (self index: byteOffset length: 4 inRange: rcvr) ifFalse:
[^interpreterProxy primitiveFailFor: PrimErrBadIndex].
addr := (self startOfData: rcvr) + byteOffset.
ptr := self cCoerce: (self longAt: addr) to: #'char *'.
^interpreterProxy methodReturnValue: (interpreterProxy positive32BitIntegerFor: (self strlen: ptr))!
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