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VMCompiledCodeBuilder.class.st
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VMCompiledCodeBuilder.class.st
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Class {
#name : #VMCompiledCodeBuilder,
#superclass : #VMAbstractBuilder,
#instVars : [
'slotSize',
'numberOfTemporaries',
'isSmall',
'literals',
'method',
'bytecodes',
'numberOfArguments',
'isPrimitive',
'originalLiterals'
],
#pools : [
'VMObjectIndices'
],
#category : #'VMMakerTests-Builders'
}
{ #category : #accessing }
VMCompiledCodeBuilder >> address [
^ method
]
{ #category : #deprecated }
VMCompiledCodeBuilder >> build [
self
deprecated: 'Use #buildMethod instead'
transformWith: '`@r build' -> '`@r buildMethod'.
^ self buildMethod
]
{ #category : #building }
VMCompiledCodeBuilder >> buildMethod [
self instantiateMethod.
self fillMethod.
^ method
]
{ #category : #building }
VMCompiledCodeBuilder >> buildMethodHeader [
^ (numberOfArguments bitShift: 24)
+ (numberOfTemporaries bitShift: 18)
+ (isSmall ifTrue: [ 0 ] ifFalse: [ 1 bitShift: 17 ])
+ literals size
+ (isPrimitive asBit << 16)
]
{ #category : #helper }
VMCompiledCodeBuilder >> bytecodeAt: anIndex forMethod: aMethodOop [
| methodHeader |
"1 based"
methodHeader := memory methodHeaderOf: aMethodOop.
^ (interpreter initialIPForHeader: methodHeader method: aMethodOop) + anIndex - 1.
]
{ #category : #accessing }
VMCompiledCodeBuilder >> bytecodes [
^ bytecodes
]
{ #category : #accessing }
VMCompiledCodeBuilder >> bytecodes: anObject [
bytecodes := anObject
]
{ #category : #filling }
VMCompiledCodeBuilder >> classIndexToUse [
| newClass |
memory nilObject = (memory splObj: 16) ifTrue: [
"initialization of a fake compiled method class"
newClass := memory
allocateSlotsInOldSpace: 3
format: memory nonIndexablePointerFormat
classIndex: memory arrayClassIndexPun.
memory storePointer: SuperclassIndex ofObject: newClass withValue: memory nilObject.
memory storePointer: MethodDictionaryIndex ofObject: newClass withValue: memory nilObject.
memory storePointer: InstanceSpecificationIndex ofObject: newClass withValue: (memory integerObjectOf: 42).
memory splObj: 16 put: newClass.
].
^ memory classTagForClass: (memory splObj: 16)
]
{ #category : #filling }
VMCompiledCodeBuilder >> fillFromPharoMethod: aCompiledMethod [
self newMethod.
self numberOfTemporaries: aCompiledMethod numTemps.
self numberOfArguments: aCompiledMethod numArgs.
self bytecodes: aCompiledMethod bytecodes.
self isPrimitive: aCompiledMethod isPrimitive.
self fillLiteralsFromPharo: aCompiledMethod allLiterals
]
{ #category : #filling }
VMCompiledCodeBuilder >> fillLiteralsFromPharo: pharoLiterals [
originalLiterals := pharoLiterals copy.
literals := originalLiterals collect: [ :e | memory nilObject ].
]
{ #category : #filling }
VMCompiledCodeBuilder >> fillMethod [
self putHeaderInMethod.
self putLiteralInMethod.
self putBytecodesInMethod.
]
{ #category : #initialization }
VMCompiledCodeBuilder >> initialize [
bytecodes := #[1 2 3 4 5 6 7 8 9 0].
literals := OrderedCollection new.
originalLiterals := OrderedCollection new.
isSmall := true.
isPrimitive := false.
numberOfArguments := 0.
numberOfTemporaries := 0.
"We reuse initialize to reset the builder, so we nil those objects"
method := nil.
slotSize := nil.
]
{ #category : #inspecting }
VMCompiledCodeBuilder >> inspectMethodIn: aBuilder [
<inspectorPresentationOrder: 0 title: 'Items'>
| items |
items :={
#currentMethodOop -> method.
#literals -> literals.
#numberOfArguments -> numberOfArguments.
#bytecodes -> bytecodes.
#context -> (isSmall ifTrue: [ 'Small context '] ifFalse: [ 'Big context' ] ).
#isPrimitive -> isPrimitive.
#slotSize -> slotSize.
}.
^ aBuilder newTable
addColumn: (SpStringTableColumn
title: 'Key'
evaluated: [ :each | StObjectPrinter asTruncatedTextFrom: each key ])
beSortable;
addColumn: (SpStringTableColumn
title: 'Value'
evaluated: [ :each | StObjectPrinter asTruncatedTextFrom: each value ])
beSortable;
items: items;
yourself
]
{ #category : #building }
VMCompiledCodeBuilder >> instantiateMethod [
slotSize := literals size
+ (bytecodes size / memory wordSize) ceiling
+ 1 "method header".
method :=
memory allocateSlotsInOldSpace: slotSize
format: (memory compiledMethodFormatForNumBytes: bytecodes size)
classIndex: self classIndexToUse.
method ifNotNil: [ memory fillObj: method numSlots: slotSize with: memory nilObject ].
]
{ #category : #accessing }
VMCompiledCodeBuilder >> isPrimitive [
^ isPrimitive
]
{ #category : #accessing }
VMCompiledCodeBuilder >> isPrimitive: anObject [
isPrimitive := anObject
]
{ #category : #accessing }
VMCompiledCodeBuilder >> isSmall [
^ isSmall
]
{ #category : #accessing }
VMCompiledCodeBuilder >> isSmall: anObject [
isSmall := anObject
]
{ #category : #accessing }
VMCompiledCodeBuilder >> literalAt: anIndex put: anOop [
self collection: literals at: anIndex put: anOop
]
{ #category : #accessing }
VMCompiledCodeBuilder >> literals [
^ literals
]
{ #category : #accessing }
VMCompiledCodeBuilder >> literals: anObject [
literals := anObject.
]
{ #category : #accessing }
VMCompiledCodeBuilder >> method [
^ method
]
{ #category : #building }
VMCompiledCodeBuilder >> newMethod [
self initialize.
]
{ #category : #accessing }
VMCompiledCodeBuilder >> numberOfArguments [
^ numberOfArguments
]
{ #category : #accessing }
VMCompiledCodeBuilder >> numberOfArguments: anObject [
numberOfArguments := anObject
]
{ #category : #accessing }
VMCompiledCodeBuilder >> numberOfTemporaries [
^ numberOfTemporaries
]
{ #category : #accessing }
VMCompiledCodeBuilder >> numberOfTemporaries: anObject [
numberOfTemporaries := anObject
]
{ #category : #filling }
VMCompiledCodeBuilder >> putBytecodesInMethod [
bytecodes doWithIndex:[ :aBytecode :anIndex |
memory storeByte:
(memory wordSize "First word is the header"
+ (literals size * memory wordSize) "bytecodes are stored after literals"
+ anIndex
- 1) "0 based"
ofObject: method
withValue: aBytecode
]
]
{ #category : #filling }
VMCompiledCodeBuilder >> putHeaderInMethod [
memory storePointer: 0
ofObject: method
withValue: (memory integerObjectOf: self buildMethodHeader)
]
{ #category : #filling }
VMCompiledCodeBuilder >> putLiteralInMethod [
originalLiterals doWithIndex: [ :aLiteral :anIndex |
"I will only transform the literals that has not been overriden."
"I Skip the last 2 literals (selector/additional, association)"
((literals at: anIndex) = memory nilObject and: [
anIndex < (originalLiterals size - 1) ]) ifTrue: [
literals
at: anIndex
put: (aLiteral forMemory: memory inMethod: self) ] ].
"the vm is 0 based, but anIndex will take the values 1 --- n,
and the 0 indexed element is the header so it's okay."
literals doWithIndex: [ :aLiteral :anIndex |
memory storePointer: anIndex ofObject: method withValue: aLiteral ]
]
{ #category : #filling }
VMCompiledCodeBuilder >> setOuterCode: aVMCompiledCodeBuilder [
"In the case of CompiledBlocks we need to put the outerCode object (the last literal).
We use the number of literals, as the VM is 0 based but the header is occupying the 0th index, everything works"
literals at: literals size put: aVMCompiledCodeBuilder address
]
{ #category : #accessing }
VMCompiledCodeBuilder >> slotSize [
"Do not set by hand !"
^ slotSize
]