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CogObjectRepresentation.class.st
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CogObjectRepresentation.class.st
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"
I am an abstract superclass for object representations whose job it is to generate abstract instructions for accessing objects. It is hoped that this level of indirection between the Cogit code generator and object access makes it easier to adapt the code generator to different garbage collectors, object representations and languages.
"
Class {
#name : #CogObjectRepresentation,
#superclass : #CogClass,
#instVars : [
'cogit',
'methodZone',
'objectMemory',
'coInterpreter',
'ceStoreCheckTrampoline',
'ceByteSizeOfTrampoline',
'ceInstantiateClassTrampoline',
'ceInstantiateClassIndexableSizeTrampoline',
'ceFloatObjectOfTrampoline',
'ceFloatValueOfTrampoline',
'ceSigned64BitIntegerTrampoline',
'ceSigned64BitValueOfTrampoline',
'cePositive64BitIntegerTrampoline',
'cePositive64BitValueOfTrampoline'
],
#pools : [
'CogAbstractRegisters',
'CogCompilationConstants',
'CogMethodConstants',
'CogRTLOpcodes',
'VMBasicConstants',
'VMObjectIndices',
'VMSqueakClassIndices',
'VMStackFrameOffsets'
],
#category : #'VMMaker-JIT'
}
{ #category : #'instance creation' }
CogObjectRepresentation class >> forCogit: aCogit methodZone: methodZone [
^self new setCogit: aCogit methodZone: methodZone
]
{ #category : #translation }
CogObjectRepresentation class >> implicitReturnTypeFor: aSelector [
"Answer the return type for methods that don't have an explicit return."
^#void
]
{ #category : #initialization }
CogObjectRepresentation class >> initializeMiscConstants [
"Override to avoid inheriting (and hence repeating) VMClass class>>initializeMiscConstants.
Subclasses that have misc constants to initialize will override further."
]
{ #category : #accessing }
CogObjectRepresentation class >> numTrampolines [
^1 "ceStoreCheckTrampoline" + (LowcodeVM ifTrue: [ 9 ] ifFalse: [ 0 ])
]
{ #category : #translation }
CogObjectRepresentation class >> typeForSelf [
^#implicit
]
{ #category : #accessing }
CogObjectRepresentation class >> wordSize [
^4
]
{ #category : #'garbage collection' }
CogObjectRepresentation >> allYoungObjectsAgeInFullGC [
^self subclassResponsibility
]
{ #category : #'sista support' }
CogObjectRepresentation >> allocateCounters: nCounters [
self subclassResponsibility
]
{ #category : #testing }
CogObjectRepresentation >> canPinObjects [
"Answer if the memory manager supports pinned objects."
^false
]
{ #category : #accessing }
CogObjectRepresentation >> ceStoreCheckTrampoline: anAddress [
<doNotGenerate>
ceStoreCheckTrampoline := anAddress
]
{ #category : #'garbage collection' }
CogObjectRepresentation >> checkValidObjectReference: anOop [
^(objectMemory isImmediate: anOop) not
and: [(objectMemory heapMapAtWord: (self pointerForOop: anOop)) ~= 0]
]
{ #category : #'in-line cacheing' }
CogObjectRepresentation >> classForInlineCacheTag: classIndex [
^self subclassResponsibility
]
{ #category : #'bytecode generator support' }
CogObjectRepresentation >> createsArraysInline [
"Answer if the object representation allocates arrays inline. By
default answer false. Better code can be generated when creating
arrays inline if values are /not/ flushed to the stack."
^false
]
{ #category : #'bytecode generator support' }
CogObjectRepresentation >> createsClosuresInline [
"Answer if the object representation allocates closures inline. By
default answer false. Better code can be generated when creating
closures inline if copied values are /not/ flushed to the stack."
^false
]
{ #category : #compilation }
CogObjectRepresentation >> ensureNoForwardedLiteralsIn: aMethodObj [
"Ensure there are no forwarded literals in the argument.
By default this is a noop. Subclasses redefine as necessary."
<inline: true>
]
{ #category : #'sista support' }
CogObjectRepresentation >> freeCounters: theCounters [
<var: #theCounters type: #usqInt>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genClearAndSetSmallIntegerTagsIn: scratchReg [
"Set the SmallInteger tag bits when the tag bits may be filled with garbage."
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genCmpClassFloatCompactIndexR: reg [
^cogit CmpCq: ClassFloatCompactIndex R: reg
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genCmpClassMethodContextCompactIndexR: reg [
^cogit CmpCq: ClassMethodContextCompactIndex R: reg
]
{ #category : #'sista support' }
CogObjectRepresentation >> genConvertSmallFloatToSmallFloatHashAsIntegerInReg: reg scratch: scratch [
^EncounteredUnknownBytecode
]
{ #category : #'bytecode generator support' }
CogObjectRepresentation >> genCreateClosureAt: bcpc numArgs: numArgs numCopied: numCopied contextNumArgs: ctxtNumArgs large: isLargeCtxt inBlock: isInBlock [
"Create a closure with the given startpc, numArgs and numCopied
within a context with ctxtNumArgs, large if isLargeCtxt that is in a
block if isInBlock. If numCopied > 0 pop those values off the stack."
self subclassResponsibility
]
{ #category : #'bytecode generator support' }
CogObjectRepresentation >> genCreateFullClosure: compiledBlock numArgs: numArgs numCopied: numCopied ignoreContext: ignoreContext contextNumArgs: contextNumArgs large: contextIsLarge inBlock: contextIsBlock [
"Create a full closure"
self subclassResponsibility
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genDoubleArithmetic: arithmeticOperator preOpCheck: preOpCheckOrNil [
<option: #DPFPReg0>
<var: #preOpCheckOrNil declareC: 'AbstractInstruction *(*preOpCheckOrNil)(int rcvrReg, int argReg)'>
| jumpFailClass jumpFailAlloc jumpFailCheck jumpImmediate jumpNonInt doOp |
<var: #jumpFailClass type: #'AbstractInstruction *'>
<var: #jumpFailAlloc type: #'AbstractInstruction *'>
<var: #jumpImmediate type: #'AbstractInstruction *'>
<var: #jumpNonInt type: #'AbstractInstruction *'>
<var: #jumpFailCheck type: #'AbstractInstruction *'>
<var: #doOp type: #'AbstractInstruction *'>
cogit processorHasDoublePrecisionFloatingPointSupport ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
self genGetDoubleValueOf: ReceiverResultReg into: DPFPReg0.
cogit MoveR: Arg0Reg R: ClassReg.
jumpImmediate := self genJumpImmediate: Arg0Reg.
self genGetCompactClassIndexNonImmOf: Arg0Reg into: SendNumArgsReg.
self genCmpClassFloatCompactIndexR: SendNumArgsReg.
jumpFailClass := cogit JumpNonZero: 0.
self genGetDoubleValueOf: Arg0Reg into: DPFPReg1.
doOp := cogit Label.
preOpCheckOrNil ifNotNil:
[jumpFailCheck := cogit perform: preOpCheckOrNil with: DPFPReg0 with: DPFPReg1].
cogit gen: arithmeticOperator operand: DPFPReg1 operand: DPFPReg0.
jumpFailAlloc := self
genAllocFloatValue: DPFPReg0
into: SendNumArgsReg
scratchReg: ClassReg
scratchReg: TempReg.
cogit MoveR: SendNumArgsReg R: ReceiverResultReg.
cogit genPrimReturn.
jumpImmediate jmpTarget: cogit Label.
self maybeGenConvertIfSmallFloatIn: Arg0Reg scratchReg: TempReg into: DPFPReg1 andJumpTo: doOp.
self smallIntegerIsOnlyImmediateType ifFalse:
[jumpNonInt := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg].
self genConvertSmallIntegerToIntegerInReg: ClassReg.
cogit ConvertR: ClassReg Rd: DPFPReg1.
cogit Jump: doOp.
jumpFailAlloc jmpTarget: (jumpFailClass jmpTarget: cogit Label).
self smallIntegerIsOnlyImmediateType ifFalse:
[jumpNonInt jmpTarget: jumpFailClass getJmpTarget].
preOpCheckOrNil ifNotNil:
[jumpFailCheck jmpTarget: jumpFailClass getJmpTarget].
^0
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genDoubleComparison: jumpOpcodeGenerator invert: invertComparison [
<option: #DPFPReg0>
<var: #jumpOpcodeGenerator declareC: 'AbstractInstruction * NoDbgRegParms (*jumpOpcodeGenerator)(void *)'>
| jumpFail jumpImmediate jumpNonInt jumpCond compare |
<var: #jumpImmediate type: #'AbstractInstruction *'>
<var: #jumpNonInt type: #'AbstractInstruction *'>
<var: #jumpCond type: #'AbstractInstruction *'>
<var: #compare type: #'AbstractInstruction *'>
<var: #jumpFail type: #'AbstractInstruction *'>
cogit processorHasDoublePrecisionFloatingPointSupport ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
self genGetDoubleValueOf: ReceiverResultReg into: DPFPReg0.
jumpImmediate := self genJumpImmediate: Arg0Reg.
self genGetCompactClassIndexNonImmOf: Arg0Reg into: SendNumArgsReg.
self genCmpClassFloatCompactIndexR: SendNumArgsReg.
jumpFail := cogit JumpNonZero: 0.
self genGetDoubleValueOf: Arg0Reg into: DPFPReg1.
invertComparison "May need to invert for NaNs"
ifTrue: [compare := cogit CmpRd: DPFPReg0 Rd: DPFPReg1]
ifFalse: [compare := cogit CmpRd: DPFPReg1 Rd: DPFPReg0].
jumpCond := cogit perform: jumpOpcodeGenerator with: 0. "FP jumps are a little weird"
cogit genMoveFalseR: ReceiverResultReg.
cogit genPrimReturn.
jumpCond jmpTarget: (cogit genMoveTrueR: ReceiverResultReg).
cogit genPrimReturn.
jumpImmediate jmpTarget: cogit Label.
self maybeGenConvertIfSmallFloatIn: Arg0Reg scratchReg: TempReg into: DPFPReg1 andJumpTo: compare.
self smallIntegerIsOnlyImmediateType ifFalse:
[jumpNonInt := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg].
self genConvertSmallIntegerToIntegerInReg: Arg0Reg.
cogit ConvertR: Arg0Reg Rd: DPFPReg1.
cogit Jump: compare.
jumpFail jmpTarget: cogit Label.
self smallIntegerIsOnlyImmediateType ifFalse:
[jumpNonInt jmpTarget: jumpFail getJmpTarget].
^CompletePrimitive
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genEnsureObjInRegNotForwarded: reg scratchReg: scratch [
"Make sure that the object in reg is not forwarded. By default there is
nothing to do. Subclasses for memory managers that forward will override."
<inline: true>
^0
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genEnsureOopInRegNotForwarded: reg scratchReg: scratch [
"Make sure that the oop in reg is not forwarded. By default there is
nothing to do. Subclasses for memory managers that forward will override."
<inline: true>
^0
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genEnsureOopInRegNotForwarded: reg scratchReg: scratch ifForwarder: fwdJumpTarget ifNotForwarder: nonFwdJumpTargetOrZero [
"Make sure that the oop in reg is not forwarded. By default there is
nothing to do. Subclasses for memory managers that forward will override."
<inline: true>
^0
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genEnsureOopInRegNotForwarded: reg scratchReg: scratch jumpBackTo: instruction [
"Make sure that the oop in reg is not forwarded. By default there is
nothing to do. Subclasses for memory managers that forward will override."
<var: #instruction type: #'AbstractInstruction *'>
<inline: true>
^0
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genEnsureOopInRegNotForwarded: reg scratchReg: scratch updatingMw: offset r: baseReg [
"Make sure that the oop in reg is not forwarded, updating the field at offset from baseReg.
By default there is nothing to do. Subclasses for memory managers that forward will override."
<inline: true>
^0
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genEnsureOopInRegNotForwarded: reg scratchReg: scratch updatingSlot: index in: objReg [
"Make sure that the oop in reg is not forwarded, updating the slot in objReg with the value."
<inline: true>
self flag: 'not safe unless there''s also a store check!!'.
self assert: false.
^self genEnsureOopInRegNotForwarded: reg
scratchReg: scratch
updatingMw: index * objectMemory wordSize + objectMemory baseHeaderSize
r: objReg
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genFastPrimFail [
<doNotGenerate>
^cogit genFastPrimFail
]
{ #category : #'bytecode generator support' }
CogObjectRepresentation >> genGetActiveContextNumArgs: numArgs large: isLargeContext inBlock: isInBlock [
"Get the active context into ReceiverResultReg, creating it if necessary."
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genGetFormatOf: srcReg into: destReg [
"Get the format field of the object in srcReg into destReg.
srcReg may equal destReg."
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genGetInlineCacheClassTagFrom: sourceReg into: destReg forEntry: forEntry [
"Extract the inline cache tag for the object in sourceReg into destReg. The inline cache tag
for a given object is the value loaded in inline caches to distinguish objects of different
classes. If forEntry is true answer the entry label at which control is to enter (cmEntryOffset).
If forEntry is false, control enters at the start."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genGetMethodHeaderOf: methodReg into: headerReg scratch: scratchReg [
"Get the method header (first word) of a CompiledMethod into headerReg.
Deal with the method possibly being cogged."
| jumpNotCogged |
<var: #jumpNotCogged type: #'AbstractInstruction *'>
cogit MoveMw: objectMemory baseHeaderSize r: methodReg R: headerReg.
jumpNotCogged := self genJumpSmallInteger: headerReg scratchReg: scratchReg.
cogit MoveMw: (cogit offset: CogMethod of: #methodHeader) r: headerReg R: headerReg.
jumpNotCogged jmpTarget: cogit Label.
^0
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genGetNumSlotsOf: srcReg into: destReg [
"Get the size in word-sized slots of the object in srcReg into destReg.
srcReg may equal destReg."
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpImmediate: aRegister [
"Generate a compare and branch to test if aRegister contains an immediate.
Answer the jump."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpIsSmallIntegerValue: aRegister scratch: scratchReg [
"Generate a test for aRegister containing an integer value in the SmallInteger range, and a jump if so, answering the jump."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpNotImmediate: aRegister [
"Generate a compare and branch to test if aRegister contains a non-immediate.
Answer the jump."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpNotSmallInteger: aRegister [
"Generate a compare and branch to test if aRegister contains other than a SmallInteger.
Answer the jump, or UnimplementedOperation if this cannot be done with a single register."
<returnTypeC: #'AbstractInstruction *'>
<inline: true>
^cogit cCoerceSimple: UnimplementedOperation to: #'AbstractInstruction *'
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpNotSmallInteger: aRegister scratchReg: scratch [
"Generate a compare and branch to test if aRegister contains other than a SmallInteger.
Answer the jump. Use scratch if required. Subclasses will override if scratch is needed."
<inline: true>
^self genJumpNotSmallInteger: aRegister
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpNotSmallIntegerInScratchReg: aRegister [
"Generate a test for aRegister containing an integer value outside the SmallInteger range, and a jump if so, answering the jump."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpNotSmallIntegerValue: aRegister scratch: scratchReg [
"Generate a test for aRegister containing an integer value outside the SmallInteger range, and a jump if so, answering the jump."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpNotSmallIntegersIn: aRegister and: bRegister scratch: scratchRegister [
"Generate a compare and branch to test if aRegister and bRegister contains other than SmallIntegers,
i.e. don't branch if both aRegister and bRegister contain SmallIntegers.
Answer the jump. Destroy scratchRegister if required."
<returnTypeC: #'AbstractInstruction *'>
<inline: true>
cogit
MoveR: aRegister R: scratchRegister;
AndR: bRegister R: scratchRegister.
^self genJumpNotSmallIntegerInScratchReg: scratchRegister
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpSmallInteger: aRegister [
"Generate a compare and branch to test if aRegister contains a SmallInteger.
Answer the jump, or UnimplementedOperation if this cannot be done with
a single register."
<returnTypeC: #'AbstractInstruction *'>
<inline: true>
^cogit cCoerceSimple: UnimplementedOperation to: #'AbstractInstruction *'
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genJumpSmallInteger: aRegister scratchReg: scratch [
"Generate a compare and branch to test if aRegister contains a SmallInteger.
Answer the jump. Use scratch if required. Subclasses will override if scratch is needed."
<inline: true>
^self genJumpSmallInteger: aRegister
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcByteSizeOf: oop to: resultRegister [
<option: #LowcodeVM>
"TODO: Optimize this one avoiding the trampoline"
oop ~= Arg0Reg ifTrue: [cogit MoveR: oop R: Arg0Reg ].
cogit CallRT: ceByteSizeOfTrampoline.
cogit MoveR: TempReg R: resultRegister.
cogit ssPushNativeRegister: resultRegister.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcFloat32: value toOop: object [
<option: #LowcodeVM>
cogit ConvertRs: value Rd: DPFPReg0.
cogit CallRT: ceFloatObjectOfTrampoline.
cogit MoveR: TempReg R: object.
cogit ssPushRegister: object.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcFloat64: value toOop: object [
<option: #LowcodeVM>
value ~= DPFPReg0 ifTrue: [ cogit MoveRd: value Rd: DPFPReg0].
cogit CallRT: ceFloatObjectOfTrampoline.
cogit MoveR: TempReg R: object.
cogit ssPushRegister: object.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcInstantiateOop: classOop [
<option: #LowcodeVM>
classOop ~= ReceiverResultReg ifTrue: [cogit MoveR: classOop R: ReceiverResultReg].
cogit CallRT: ceInstantiateClassTrampoline.
cogit MoveR: TempReg R: classOop.
cogit ssPushRegister: classOop.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcInstantiateOop: classOop constantIndexableSize: indexableSize [
<option: #LowcodeVM>
classOop ~= Arg0Reg ifTrue: [cogit MoveR: classOop R: Arg0Reg].
cogit MoveCq: indexableSize R: Arg1Reg.
cogit CallRT: ceInstantiateClassIndexableSizeTrampoline.
cogit MoveR: TempReg R: classOop.
cogit ssPushRegister: classOop.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcInstantiateOop: classOop indexableSize: indexableSize [
<option: #LowcodeVM>
classOop ~= Arg0Reg ifTrue: [
indexableSize = Arg0Reg ifTrue: [
cogit MoveR: indexableSize R: TempReg.
].
cogit MoveR: classOop R: Arg0Reg
].
indexableSize ~= Arg1Reg ifTrue: [
indexableSize = Arg0Reg ifTrue: [
cogit MoveR: TempReg R: Arg1Reg.
] ifFalse: [
cogit MoveR: indexableSize R: Arg1Reg.
]
].
cogit CallRT: ceInstantiateClassIndexableSizeTrampoline.
cogit MoveR: TempReg R: classOop.
cogit ssPushRegister: classOop.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcInt64ToOop: value [
<option: #LowcodeVM>
value ~= ReceiverResultReg ifTrue: [ cogit MoveR: value R: ReceiverResultReg.].
cogit CallRT: ceSigned64BitIntegerTrampoline.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit ssPushRegister: ReceiverResultReg.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcInt64ToOop: valueLow highPart: valueHigh [
<option: #LowcodeVM>
"Put the arguments in the correct registers"
valueLow ~= ReceiverResultReg ifTrue: [
valueHigh = ReceiverResultReg ifTrue: [
cogit MoveR: valueHigh R: TempReg.
].
cogit MoveR: valueLow R: ReceiverResultReg.
].
valueHigh ~= Arg0Reg ifTrue: [
valueHigh = ReceiverResultReg ifTrue: [
cogit MoveR: TempReg R: Arg0Reg.
] ifFalse: [
cogit MoveR: valueHigh R: Arg0Reg.
]
].
"Call the trampoline"
cogit CallRT: ceSigned64BitIntegerTrampoline.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit ssPushRegister: ReceiverResultReg.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOop: object toFloat32: value [
<option: #LowcodeVM>
object ~= ReceiverResultReg ifTrue: [ cogit MoveR: object R: ReceiverResultReg].
cogit CallRT: ceFloatValueOfTrampoline.
cogit ConvertRd: DPFPReg0 Rs: value.
cogit ssPushNativeRegisterSingleFloat: value.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOop: object toFloat64: value [
<option: #LowcodeVM>
object ~= ReceiverResultReg ifTrue: [ cogit MoveR: object R: ReceiverResultReg].
cogit CallRT: ceFloatValueOfTrampoline.
DPFPReg0 ~= value ifTrue: [cogit MoveRd: DPFPReg0 Rd: value.].
cogit ssPushNativeRegisterDoubleFloat: value.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOop: object toInt64: valueLow highPart: valueHigh [
<option: #LowcodeVM>
object ~= ReceiverResultReg ifTrue: [ cogit MoveR: object R: ReceiverResultReg.].
cogit CallRT: ceSigned64BitValueOfTrampoline.
Arg0Reg ~= valueHigh ifTrue: [cogit MoveR: Arg0Reg R: valueHigh].
cogit MoveR: TempReg R: valueLow.
cogit ssPushNativeRegister: valueLow secondRegister: valueHigh.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOop: object toUInt64: valueLow highPart: valueHigh [
<option: #LowcodeVM>
object ~= ReceiverResultReg ifTrue: [ cogit MoveR: object R: ReceiverResultReg.].
cogit CallRT: cePositive64BitValueOfTrampoline.
Arg0Reg ~= valueHigh ifTrue: [cogit MoveR: Arg0Reg R: valueHigh].
cogit MoveR: TempReg R: valueLow.
cogit ssPushNativeRegister: valueLow secondRegister: valueHigh.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOopToInt64: value [
<option: #LowcodeVM>
value ~= ReceiverResultReg ifTrue: [ cogit MoveR: value R: ReceiverResultReg.].
cogit CallRT: ceSigned64BitValueOfTrampoline.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit ssPushNativeRegister: ReceiverResultReg.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOopToPointer: object [
<option: #LowcodeVM>
"Assume this is always correct"
cogit MoveMw: BaseHeaderSize r: object R: object.
cogit ssPushNativeRegister: object.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcOopToUInt64: value [
<option: #LowcodeVM>
value ~= ReceiverResultReg ifTrue: [ cogit MoveR: value R: ReceiverResultReg.].
cogit CallRT: cePositive64BitValueOfTrampoline.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit ssPushNativeRegister: ReceiverResultReg.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcPointerToOop: pointer class: pointerClass [
<option: #LowcodeVM>
cogit PushR: pointer.
cogit annotate: (cogit MoveCw: pointerClass R: Arg0Reg) objRef: pointerClass.
cogit MoveCq: BytesPerOop R: Arg1Reg.
cogit CallRT: ceInstantiateClassIndexableSizeTrampoline.
cogit PopR: pointer.
cogit MoveR: pointer Mw: BaseHeaderSize r: TempReg.
cogit MoveR: TempReg R: pointer.
cogit ssPushRegister: pointer.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcUInt64ToOop: value [
<option: #LowcodeVM>
value ~= ReceiverResultReg ifTrue: [ cogit MoveR: value R: ReceiverResultReg.].
cogit CallRT: cePositive64BitIntegerTrampoline.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit ssPushRegister: ReceiverResultReg.
]
{ #category : #'inline primitive support' }
CogObjectRepresentation >> genLcUInt64ToOop: valueLow highPart: valueHigh [
<option: #LowcodeVM>
"Put the arguments in the correct registers"
valueLow ~= ReceiverResultReg ifTrue: [
valueHigh = ReceiverResultReg ifTrue: [
cogit MoveR: valueHigh R: TempReg.
].
cogit MoveR: valueLow R: ReceiverResultReg.
].
valueHigh ~= Arg0Reg ifTrue: [
valueHigh = ReceiverResultReg ifTrue: [
cogit MoveR: TempReg R: Arg0Reg.
] ifFalse: [
cogit MoveR: valueHigh R: Arg0Reg.
]
].
"Call the trampoline"
cogit CallRT: cePositive64BitIntegerTrampoline.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit ssPushRegister: ReceiverResultReg.
]
{ #category : #'compile abstract instructions' }
CogObjectRepresentation >> genLoadSlot: index sourceReg: sourceReg destReg: destReg [
cogit
MoveMw: index * objectMemory wordSize + objectMemory baseHeaderSize
r: sourceReg
R: destReg.
^0
]
{ #category : #'bytecode generator support' }
CogObjectRepresentation >> genNewArrayOfSize: size initialized: initialized [
"Generate a call to code that allocates a new Array of size.
The Array should be initialized with nils iff initialized is true.
The size arg is passed in SendNumArgsReg, the result
must come back in ReceiverResultReg."
self subclassResponsibility
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveAdd [
| jumpNotSI jumpOvfl |
<var: #jumpNotSI type: #'AbstractInstruction *'>
<var: #jumpOvfl type: #'AbstractInstruction *'>
cogit mclassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
cogit MoveR: Arg0Reg R: ClassReg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
self genRemoveSmallIntegerTagsInScratchReg: ClassReg.
cogit AddR: ReceiverResultReg R: ClassReg.
jumpOvfl := cogit JumpOverflow: 0.
cogit MoveR: ClassReg R: ReceiverResultReg.
cogit genPrimReturn.
jumpOvfl jmpTarget: (jumpNotSI jmpTarget: cogit Label).
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveAsCharacter [
"subclasses override if they can"
^UnimplementedPrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveAsFloat [
<option: #DPFPReg0>
| jumpFailAlloc |
<var: #jumpFailAlloc type: #'AbstractInstruction *'>
cogit processorHasDoublePrecisionFloatingPointSupport ifFalse:
[^UnimplementedPrimitive].
cogit MoveR: ReceiverResultReg R: TempReg.
self genConvertSmallIntegerToIntegerInReg: TempReg.
cogit ConvertR: TempReg Rd: DPFPReg0.
jumpFailAlloc := self
genAllocFloatValue: DPFPReg0
into: SendNumArgsReg
scratchReg: ClassReg
scratchReg: TempReg.
cogit MoveR: SendNumArgsReg R: ReceiverResultReg.
cogit genPrimReturn.
jumpFailAlloc jmpTarget: cogit Label.
^0
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveAt [
"subclasses override if they can"
^UnimplementedPrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveAtPut [
"subclasses override if they can"
^UnimplementedPrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveBitAnd [
| jumpNotSI |
<var: #jumpNotSI type: #'AbstractInstruction *'>
cogit mclassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
"Whether the SmallInteger tags are zero or non-zero, anding them together will preserve them."
cogit AndR: Arg0Reg R: ReceiverResultReg.
cogit genPrimReturn.
jumpNotSI jmpTarget: cogit Label.
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveBitOr [
| jumpNotSI |
<var: #jumpNotSI type: #'AbstractInstruction *'>
cogit mclassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
"Whether the SmallInteger tags are zero or non-zero, oring them together will preserve them."
cogit OrR: Arg0Reg R: ReceiverResultReg.
cogit genPrimReturn.
jumpNotSI jmpTarget: cogit Label.
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveBitShift [
"rTemp := rArg0
rClass := tTemp
rTemp := rTemp & 1
jz nonInt
rClass >>= 1
cmp 0,rClass
jge neg
cmp 31,rClass // numSmallIntegerBits, jge for sign
jge tooBig
rTemp := rReceiver
rTemp <<= rClass
rTemp >>= rClass (arithmetic)
cmp rTemp,rReceiver
jnz ovfl
rReceiver := rReceiver - 1
rReceiver := rReceiver <<= rClass
rReceiver := rReceiver + 1
ret
neg:
rClass := 0 - rClass
cmp 31,rClass // numSmallIntegerBits
jge inRange
rClass := 31
inRange
rReceiver := rReceiver >>= rClass.
rReceiver := rReceiver | smallIntegerTags.
ret
ovfl
tooBig
nonInt:
fail"
| jumpNotSI jumpOvfl jumpNegative jumpTooBig jumpInRange |
<var: #jumpNotSI type: #'AbstractInstruction *'>
<var: #jumpOvfl type: #'AbstractInstruction *'>
<var: #jumpNegative type: #'AbstractInstruction *'>
<var: #jumpTooBig type: #'AbstractInstruction *'>
<var: #jumpInRange type: #'AbstractInstruction *'>
cogit mclassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
cogit MoveR: Arg0Reg R: ClassReg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
self genConvertSmallIntegerToIntegerInReg: ClassReg.
(cogit lastOpcode setsConditionCodesFor: JumpNegative) ifFalse:
[cogit CmpCq: 0 R: ClassReg]. "N.B. FLAGS := ClassReg - 0"
jumpNegative := cogit JumpNegative: 0.
cogit CmpCq: self numSmallIntegerBits R: ClassReg. "N.B. FLAGS := ClassReg - numSmallIntegerBits"
jumpTooBig := cogit JumpGreaterOrEqual: 0.
cogit MoveR: ReceiverResultReg R: TempReg.
cogit LogicalShiftLeftR: ClassReg R: TempReg.
cogit ArithmeticShiftRightR: ClassReg R: TempReg.
cogit CmpR: TempReg R: ReceiverResultReg. "N.B. FLAGS := RRReg - TempReg"
jumpOvfl := cogit JumpNonZero: 0.
self genRemoveSmallIntegerTagsInScratchReg: ReceiverResultReg.
cogit LogicalShiftLeftR: ClassReg R: ReceiverResultReg.
self genAddSmallIntegerTagsTo: ReceiverResultReg.
cogit genPrimReturn.
jumpNegative jmpTarget: (cogit NegateR: ClassReg).
cogit CmpCq: self numSmallIntegerBits R: ClassReg. "N.B. FLAGS := ClassReg - numSmallIntegerBits"
jumpInRange := cogit JumpLessOrEqual: 0.
cogit MoveCq: self numSmallIntegerBits R: ClassReg.
jumpInRange jmpTarget: (cogit ArithmeticShiftRightR: ClassReg R: ReceiverResultReg).
self genClearAndSetSmallIntegerTagsIn: ReceiverResultReg.
cogit genPrimReturn.
jumpNotSI jmpTarget: (jumpTooBig jmpTarget: (jumpOvfl jmpTarget: cogit Label)).
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveBitXor [
| jumpNotSI |
<var: #jumpNotSI type: #'AbstractInstruction *'>
cogit mclassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
"Clear one or the other tag so that xoring will preserve them."
self genRemoveSmallIntegerTagsInScratchReg: Arg0Reg.
cogit XorR: Arg0Reg R: ReceiverResultReg.
cogit genPrimReturn.
jumpNotSI jmpTarget: cogit Label.
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveClass [
| reg |
reg := ReceiverResultReg.
cogit methodNumArgs > 0 ifTrue:
[cogit methodNumArgs > 1 ifTrue:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: (reg := Arg0Reg)].
(self
genGetClassObjectOf: reg
into: ReceiverResultReg
scratchReg: TempReg
instRegIsReceiver: reg = ReceiverResultReg) = BadRegisterSet ifTrue:
[self
genGetClassObjectOf: reg
into: ClassReg
scratchReg: TempReg
instRegIsReceiver: reg = ReceiverResultReg.
cogit MoveR: ClassReg R: ReceiverResultReg].
cogit genPrimReturn.
^UnfailingPrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveClosureValue [
"Defer to the cogit for this one. This is for two reasons:
a) Cogit's version speeds up cull: et al by not calling the interpreter primitive if numArgs is wrong.
Our convention for compiling the interpreter primitive call doesn't agree with this usage.
b) Cogit refuses to compile primitiveClosureValueNoContextSwitch until the blockNoContextSwitchOffset
is known, and that isn't information the CogObjectRepresentation is privvy to."
<doNotGenerate>
^cogit genPrimitiveClosureValue
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveDiv [
| jumpNotSI jumpIsSI jumpZero jumpExact jumpSameSign convert |
<var: #convert type: #'AbstractInstruction *'>
<var: #jumpIsSI type: #'AbstractInstruction *'>
<var: #jumpZero type: #'AbstractInstruction *'>
<var: #jumpNotSI type: #'AbstractInstruction *'>
<var: #jumpExact type: #'AbstractInstruction *'>
<var: #jumpSameSign type: #'AbstractInstruction *'>
cogit processorHasDivQuoRemAndMClassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
cogit MoveR: Arg0Reg R: ClassReg.
cogit MoveR: Arg0Reg R: Arg1Reg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
"We must shift away the tags, not just subtract them, so that the
overflow case doesn't actually overflow the machine instruction."
self genShiftAwaySmallIntegerTagsInScratchReg: ClassReg.
(cogit lastOpcode setsConditionCodesFor: JumpZero) ifFalse:
[cogit CmpCq: 0 R: ClassReg].
jumpZero := cogit JumpZero: 0.
cogit MoveR: ReceiverResultReg R: TempReg.
self genShiftAwaySmallIntegerTagsInScratchReg: TempReg.
cogit DivR: ClassReg R: TempReg Quo: TempReg Rem: ClassReg.
"If remainder is zero we must check for overflow."
cogit CmpCq: 0 R: ClassReg.
jumpExact := cogit JumpZero: 0.
"If arg and remainder signs are different we must round down."
cogit XorR: ClassReg R: Arg1Reg.
(cogit lastOpcode setsConditionCodesFor: JumpZero) ifFalse:
[cogit CmpCq: 0 R: Arg1Reg].
jumpSameSign := cogit JumpGreaterOrEqual: 0.
cogit SubCq: 1 R: TempReg.
jumpSameSign jmpTarget: (convert := cogit Label).
self genConvertIntegerToSmallIntegerInReg: TempReg.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit genPrimReturn.
"test for overflow; the only case is SmallInteger minVal // -1"
jumpExact jmpTarget: cogit Label.
jumpIsSI := self genJumpIsSmallIntegerValue: TempReg scratch: Arg1Reg.
jumpIsSI jmpTarget: convert.
jumpZero jmpTarget: (jumpNotSI jmpTarget: cogit Label).
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveDivide [
| jumpNotSI jumpZero jumpInexact jumpOverflow |
<var: #jumpNotSI type: #'AbstractInstruction *'>
<var: #jumpZero type: #'AbstractInstruction *'>
<var: #jumpInexact type: #'AbstractInstruction *'>
<var: #jumpOverflow type: #'AbstractInstruction *'>
cogit processorHasDivQuoRemAndMClassIsSmallInteger ifFalse:
[^UnimplementedPrimitive].
cogit genLoadArgAtDepth: 0 into: Arg0Reg.
cogit MoveR: Arg0Reg R: ClassReg.
jumpNotSI := self genJumpNotSmallInteger: Arg0Reg scratchReg: TempReg.
"We must shift away the tags, not just subtract them, so that the
overflow case doesn't actually overflow the machine instruction."
self genShiftAwaySmallIntegerTagsInScratchReg: ClassReg.
jumpZero := cogit JumpZero: 0.
cogit MoveR: ReceiverResultReg R: TempReg.
self genShiftAwaySmallIntegerTagsInScratchReg: TempReg.
cogit DivR: ClassReg R: TempReg Quo: TempReg Rem: ClassReg.
"If remainder is non-zero fail."
cogit CmpCq: 0 R: ClassReg.
jumpInexact := cogit JumpNonZero: 0.
"test for overflow; the only case is SmallInteger minVal / -1"
jumpOverflow := self genJumpNotSmallIntegerValue: TempReg scratch: Arg1Reg.
self genConvertIntegerToSmallIntegerInReg: TempReg.
cogit MoveR: TempReg R: ReceiverResultReg.
cogit genPrimReturn.
jumpOverflow jmpTarget: (jumpInexact jmpTarget: (jumpZero jmpTarget: (jumpNotSI jmpTarget: cogit Label))).
^CompletePrimitive
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveEqual [
^self
genSmallIntegerComparison: JumpZero
orDoubleComparison: #JumpFPEqual:
invert: false
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveFloatAdd [
<option: #DPFPReg0>
^self genDoubleArithmetic: AddRdRd preOpCheck: nil
]
{ #category : #'primitive generators' }
CogObjectRepresentation >> genPrimitiveFloatDivide [
<option: #DPFPReg0>
^self
genDoubleArithmetic: DivRdRd
preOpCheck: #genDoubleFailIfZeroArgRcvr:arg:
]
{ #category : #'primitive generators' }