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CogAbstractInstruction.class.st
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CogAbstractInstruction.class.st
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"
I am an abstract instruction generated by the Cogit. I am subsequently concretized to machine code for the current processor. A sequence of concretized CogAbstractInstructions are concatenated to form the code for a CogMethod. I am an abstract class. My concrete subclasses concretize to the machine code of a specific processor.
Instance Variables
address: <Integer>
bcpc: <Integer>
cogit: <Cogit>
dependent: <AbstractInstruction|nil>
machineCode: <CArray on: (ByteArray|Array)>
machineCodeSize: <Integer>
maxSize: <Integer>
objectMemory: <NewCoObjectMemory|SpurCoMemoryManager etc>
opcode: <Integer>
operands: <CArray on: Array>
address
- the address at which the instruction will be generated
bcpc
- the bytecode pc for which the instruction was generated; simulation only
cogit
- the Cogit assembling the receiver; simulation only
dependent
- a reference to another instruction which depends on the receiver, if any; in C this is a pointer
machineCode
- the array of machine code the receiver generates when concretized
machineCodeSize
- the size of machineCode in bytes
maxSize
- the maximum size of machine code that the current instruction will generate, in bytes
objectMemory
- the memory manager for the system; simulation only
opcode
- the opcode for the receiver which defines which abstract opcode it represents; see CogRTLOpcodes class>>initialize and CogAbstractInstruction subclass initialize methods
operands
- the array containing any operands the instruction may have; the opcode defines implicitly how many operands are consdered
"
Class {
#name : #CogAbstractInstruction,
#superclass : #VMStructType,
#instVars : [
'opcode',
'machineCodeSize',
'maxSize',
'annotation',
'machineCode',
'operands',
'address',
'dependent',
'cogit',
'objectMemory',
'bcpc'
],
#classVars : [
'NumOperands'
],
#pools : [
'CogAbstractRegisters',
'CogCompilationConstants',
'CogRTLOpcodes'
],
#category : #'VMMaker-JIT'
}
{ #category : #translation }
CogAbstractInstruction class >> ISA [
"Answer the name of the ISA the receiver's subclass implements."
^self subclassResponsibility
]
{ #category : #'simulation only' }
CogAbstractInstruction class >> byteSizeForSimulator: aVMClass [
"Answer an approximation of the byte size of an AbstractInstruction struct.
This is for estimating the alloca in allocateOpcodes:bytecodes:ifFail:
self allSubclasses collect: [:ea| {ea. ea byteSizeForSimulator: ea basicNew}]"
| ptrsize |
ptrsize := self == CogAbstractInstruction ifTrue: [VMClass bytesPerWord] ifFalse: [self wordSize].
^CogCompilerClass instSize
- 4 "cogit, objectMemory, bcpc, machineCode"
- 4 + 1
"opcode machineCodeSize maxSize annotation are all bytes -> 1 long" * ptrsize
+ CogCompilerClass basicNew machineCodeBytes
roundTo: ptrsize
]
{ #category : #translation }
CogAbstractInstruction class >> defaultCompilerClass [
^self
]
{ #category : #translation }
CogAbstractInstruction class >> filteredInstVarNames [
"Eliminate bcpc, which is development-time only."
^super filteredInstVarNames copyWithout: 'bcpc'
]
{ #category : #'instance creation' }
CogAbstractInstruction class >> for: aCogit [
^self new cogit: aCogit
]
{ #category : #translation }
CogAbstractInstruction class >> identifyingPredefinedMacros [
"Answer the predefined macros that identify the processors a subclass handles, if any.
If the subclass isn't yet ready for production (a work in progress) simply answer nil."
^nil
]
{ #category : #translation }
CogAbstractInstruction class >> ifTranslateableAddWithOptionsTo: aCollection [
(self wordSize = Cogit objectMemoryClass wordSize
and: [self identifyingPredefinedMacros notNil]) ifTrue:
[aCollection add: {self. {#ISA. self ISA}}]
]
{ #category : #'class initialization' }
CogAbstractInstruction class >> initialize [
NumOperands := 4
]
{ #category : #'class initialization' }
CogAbstractInstruction class >> initializeAbstractRegisters [
"Assign the abstract registers with the identities/indices of the relevant concrete registers,
and assign CallerSavedRegisterMask appropriately.
First set all abstract registers to #undefined via CogAbstractRegisters initialize, and then,
each subclasses assigns the subset they choose with values of specific concrete registers."
CallerSavedRegisterMask := #undefined.
CogAbstractRegisters initialize
]
{ #category : #'class initialization' }
CogAbstractInstruction class >> initializeSpecificOpcodes: opcodeSymbolSequence in: initializeMethod [
"Declare as class variables, the opcodes in opcodeSymbolSequence.
Assign values to them from LastRTLOpcode on.
This method should be used by subclasses wishing to declare
their own specific opcodes."
| pool classVariablesDefinedInMethod |
self assert: self ~~ CogAbstractInstruction.
pool := initializeMethod methodClass classPool.
LastRTLCode ifNil:
[CogRTLOpcodes initialize].
classVariablesDefinedInMethod := (initializeMethod allLiterals select: [:l| l isVariableBinding and: [pool includesKey: l key]]) collect:
[:ea| ea key].
"Declare opcodeSymbolSequence's elements from LastRTLCode on up."
opcodeSymbolSequence withIndexDo:
[:classVarName :value|
pool
declare: classVarName from: Undeclared;
at: classVarName put: value + LastRTLCode - 1]
]
{ #category : #translation }
CogAbstractInstruction class >> instVarNamesAndTypesForTranslationDo: aBinaryBlock [
"Enumerate aBinaryBlock with the names and C type strings for the inst vars to include in an AbstractInstruction struct."
"(CogAbstractInstruction withAllSubclasses reject: [:c| c name includesSubString: 'ForTests']) do:
[:c| Transcript print: c; cr. c printTypedefOn: Transcript]"
(self filteredInstVarNames copyWithout: 'machineCode'), #('machineCode') do:
[:ivn|
aBinaryBlock
value: ivn
value: (ivn caseOf: {
['address'] -> [#usqInt]. "usqInt is always large enough to contain a pointer; we do not need to use usqIntptr_t"
['machineCode'] -> [self machineCodeDeclaration].
['operands'] -> [{#usqInt. '[', NumOperands printString, ']'}].
['dependent'] -> ['struct _AbstractInstruction *']}
otherwise:
[#'unsigned char'])]
]
{ #category : #testing }
CogAbstractInstruction class >> isAbstract [
^self == CogAbstractInstruction
]
{ #category : #translation }
CogAbstractInstruction class >> isAccessor: aSelector [
^(#(cogit coInterpreter objectMemory) includes: aSelector) not
and: [super isAccessor: aSelector]
]
{ #category : #testing }
CogAbstractInstruction class >> isRISCTempRegister: reg [
"For tests to filter-out bogus values left in the RISCTempRegister, if any."
^self subclassResponsibility
]
{ #category : #'accessing class hierarchy' }
CogAbstractInstruction class >> literalsManagerClass [
"Answer the manager that generates in-line literals;
subclasses that use out-of-line literals override."
^InLineLiteralsManager
]
{ #category : #printing }
CogAbstractInstruction class >> localNameForOpcode: opcode [
^(self classPool keyAtValue: opcode ifAbsent: nil)
ifNotNil: [:opcodeName| opcodeName]
ifNil: [self == CogAbstractInstruction
ifTrue: [opcode printString]
ifFalse: [superclass localNameForOpcode: opcode]]
]
{ #category : #translation }
CogAbstractInstruction class >> machineCodeDeclaration [
"Answer a dummy declaration. Subclasses will override to provide the real one."
^#(#'unsigned char' '[4]')
]
{ #category : #translation }
CogAbstractInstruction class >> moduleName [
"CogAbstractInstruction subclasses collect: [:ea| ea moduleName]"
^'cogit', self ISA
]
{ #category : #'debug printing' }
CogAbstractInstruction class >> nameForOpcode: opcode [ "<Integer>"
^(CogRTLOpcodes nameForOpcode: opcode)
ifNotNil:
[:opcodeName| opcodeName]
ifNil:
[self localNameForOpcode: opcode]
]
{ #category : #'debug printing' }
CogAbstractInstruction class >> printFormatForOpcodeName: opcodeName [
"Answer a sequence of $r, $f or nil for the operands in the opcode, used for printing, where
r => integer register, f => floating point register, and nil => numeric or address operand.
Subclasses can override to provide a format string for their own private opcodes."
^#()
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg [
^Cogit basicNew registerMaskFor: reg
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 [
^Cogit basicNew registerMaskFor: reg1 and: reg2
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 and: reg8 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 and: reg8
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 and: reg8 and: reg9 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 and: reg8 and: reg9
]
{ #category : #'register management' }
CogAbstractInstruction class >> registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 and: reg8 and: reg9 and: reg10 [
^Cogit basicNew registerMaskFor: reg1 and: reg2 and: reg3 and: reg4 and: reg5 and: reg6 and: reg7 and: reg8 and: reg9 and: reg10
]
{ #category : #translation }
CogAbstractInstruction class >> requiredMethodNames: options [
^self selectors reject:
[:s| | m |
(self isAccessor: s)
or: [((m := self compiledMethodAt: s) isQuick and: [m pragmas isEmpty])
or: [(m pragmaAt: #doNotGenerate) notNil
or: [(m pragmaAt: #inline:) notNil and: [(m pragmaAt: #inline:) arguments first == true]]]]]
]
{ #category : #verification }
CogAbstractInstruction class >> specificOpcodes [
^self subclassResponsibility
]
{ #category : #translation }
CogAbstractInstruction class >> structTypeName [
^'AbstractInstruction'
]
{ #category : #translation }
CogAbstractInstruction class >> translateableSubclassesAndOptions [
"CogAbstractInstruction translateableSubclassesAndOptions"
| translateableSubclassesAndOptions |
translateableSubclassesAndOptions := OrderedCollection new.
self subclasses do:
[:subclass|
subclass ifTranslateableAddWithOptionsTo: translateableSubclassesAndOptions].
^translateableSubclassesAndOptions sort:
[:a :b|
a first name < b first name
or: [a first name = b first name "If equal, sort on the ABI"
and: [a last last < b last last]]]
]
{ #category : #translation }
CogAbstractInstruction class >> typeForSelf [
"Answer the type to give self if appropriate, or nil if not.
In C all subclasses are mapped to the AbstractInstruction type."
^#'AbstractInstruction *'
]
{ #category : #verification }
CogAbstractInstruction class >> unimplementedOpcodes [
"Check computeMaximumSize and dispatchConcretize for unimplemented opcodes."
"self subclasses collect: [:compiler| {compiler. compiler unimplementedOpcodes}]"
| opcodes cmsLiterals dcLiterals |
opcodes := CogRTLOpcodes opcodes, self specificOpcodes.
cmsLiterals := (self >> #computeMaximumSize) literals
select: [:l| l isVariableBinding]
thenCollect: [:l| l key].
dcLiterals := (self >> #dispatchConcretize) literals
select: [:l| l isVariableBinding]
thenCollect: [:l| l key].
^Dictionary new
at: #computeMaximumSize put: (opcodes reject: [:opcode| cmsLiterals includes: opcode]);
at: #dispatchConcretize put: (opcodes reject: [:opcode| dcLiterals includes: opcode]);
yourself
]
{ #category : #verification }
CogAbstractInstruction class >> usedUnimplementedOpcodes [
"Check for uses of unimplemented opcodes"
"self subclasses collect: [:compiler| {compiler. compiler usedUnimplementedOpcodes}]"
| genericUnimplementedOpcodeBindings specificUnimplementedOpcodeBindings |
genericUnimplementedOpcodeBindings := Set new.
specificUnimplementedOpcodeBindings := Set new.
self unimplementedOpcodes do:
[:arrayOfOpcodes|
arrayOfOpcodes do:
[:opcode|
(self bindingOf: opcode)
ifNotNil: [:b| specificUnimplementedOpcodeBindings add: b]
ifNil: [genericUnimplementedOpcodeBindings add: (CogRTLOpcodes bindingOf: opcode)]]].
^ { (SystemNavigation new allCallsOn: genericUnimplementedOpcodeBindings localToPackage: #VMMaker)
inject: Set new
into: [:them :methodRef| "These should be in Cogit's abstract instructions category"
them
addAll: (SystemNavigation new allCallsOn: methodRef method selector localToPackage: #VMMaker);
yourself].
SystemNavigation new allCallsOn: specificUnimplementedOpcodeBindings localToPackage: #VMMaker }
]
{ #category : #translation }
CogAbstractInstruction class >> wordSize [
"Answer either 4 or 8 depending on the processor's basic architacture."
self subclassResponsibility
]
{ #category : #comparing }
CogAbstractInstruction >> <= anAbstractInstruction [
"Support for Cogit>>abstractInstruction:follows: and CogBytecodeFixup>targetInstruction testing:"
<doNotGenerate>
| opcodesArray |
anAbstractInstruction isInteger ifTrue:
[self assert: anAbstractInstruction < 16.
^false].
opcodesArray := cogit abstractOpcodes object.
^(opcodesArray identityIndexOf: self) <= (opcodesArray identityIndexOf: anAbstractInstruction)
]
{ #category : #comparing }
CogAbstractInstruction >> > anAbstractInstruction [
"Support for Cogit>>abstractInstruction:follows: and CogBytecodeFixup>targetInstruction testing:"
<doNotGenerate>
| opcodesArray |
anAbstractInstruction isInteger ifTrue:
[self assert: anAbstractInstruction < 16.
^true].
opcodesArray := cogit abstractOpcodes object.
^(opcodesArray identityIndexOf: self) > (opcodesArray identityIndexOf: anAbstractInstruction)
]
{ #category : #comparing }
CogAbstractInstruction >> >= anAbstractInstruction [
"Support for Cogit>>abstractInstruction:follows: and CogBytecodeFixup>targetInstruction testing:"
<doNotGenerate>
| opcodesArray |
anAbstractInstruction isInteger ifTrue:
[self assert: anAbstractInstruction < 16.
^true].
opcodesArray := cogit abstractOpcodes object.
^(opcodesArray identityIndexOf: self) >= (opcodesArray identityIndexOf: anAbstractInstruction)
]
{ #category : #accessing }
CogAbstractInstruction >> addDependent: anInstruction [
<var: #anInstruction type: #'AbstractInstruction *'>
<returnTypeC: #'AbstractInstruction *'>
dependent ifNotNil:
[anInstruction dependent: dependent].
^dependent := anInstruction
]
{ #category : #accessing }
CogAbstractInstruction >> address [
^address
]
{ #category : #accessing }
CogAbstractInstruction >> address: theAddress [
^address := theAddress
]
{ #category : #accessing }
CogAbstractInstruction >> annotation [
^annotation
]
{ #category : #accessing }
CogAbstractInstruction >> annotation: aByte [
^annotation := aByte
]
{ #category : #coercion }
CogAbstractInstruction >> asInteger [
<doNotGenerate>
^self
]
{ #category : #coercion }
CogAbstractInstruction >> asIntegerPtr [
<doNotGenerate>
^self
]
{ #category : #coercion }
CogAbstractInstruction >> asUnsignedInteger [
<doNotGenerate>
^self
]
{ #category : #coercion }
CogAbstractInstruction >> asUnsignedIntegerPtr [
<doNotGenerate>
^self
]
{ #category : #'register allocation' }
CogAbstractInstruction >> availableFloatRegisterOrNoneFor: liveRegsMask [
"Answer an unused abstract register in the liveRegMask.
Subclasses with more registers can override to answer them."
<returnTypeC: #sqInt>
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg0)) ifFalse:
[^DPFPReg0].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg1)) ifFalse:
[^DPFPReg1].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg2)) ifFalse:
[^DPFPReg2].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg3)) ifFalse:
[^DPFPReg3].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg4)) ifFalse:
[^DPFPReg4].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg5)) ifFalse:
[^DPFPReg5].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg6)) ifFalse:
[^DPFPReg6].
(liveRegsMask anyMask: (cogit registerMaskFor: DPFPReg7)) ifFalse:
[^DPFPReg7].
^ NoReg
]
{ #category : #'register allocation' }
CogAbstractInstruction >> availableRegisterOrNoneFor: liveRegsMask [
"Answer an unused abstract register in the liveRegMask.
Subclasses with more registers can override to answer them.
N.B. Do /not/ allocate TempReg."
<returnTypeC: #sqInt>
(cogit register: Arg1Reg isInMask: liveRegsMask) ifFalse:
[^Arg1Reg].
(cogit register: Arg0Reg isInMask: liveRegsMask) ifFalse:
[^Arg0Reg].
(cogit register: SendNumArgsReg isInMask: liveRegsMask) ifFalse:
[^SendNumArgsReg].
(cogit register: ClassReg isInMask: liveRegsMask) ifFalse:
[^ClassReg].
(cogit register: ReceiverResultReg isInMask: liveRegsMask) ifFalse:
[^ReceiverResultReg].
^NoReg
]
{ #category : #'register allocation' }
CogAbstractInstruction >> availableVectorRegisterOrNoneFor: liveRegsMask [
"Answer an unused abstract vector register in the liveRegMask.
Subclasses with more registers can override to answer them."
<returnTypeC: #sqInt>
(cogit register: VReg0 isInMask: liveRegsMask) ifFalse:
[^VReg0].
(cogit register: VReg1 isInMask: liveRegsMask) ifFalse:
[^VReg1].
(cogit register: VReg2 isInMask: liveRegsMask) ifFalse:
[^VReg2].
(cogit register: VReg3 isInMask: liveRegsMask) ifFalse:
[^VReg3].
(cogit register: VReg4 isInMask: liveRegsMask) ifFalse:
[^VReg4].
(cogit register: VReg5 isInMask: liveRegsMask) ifFalse:
[^VReg5].
(cogit register: VReg6 isInMask: liveRegsMask) ifFalse:
[^VReg6].
(cogit register: VReg7 isInMask: liveRegsMask) ifFalse:
[^VReg7].
^NoReg
]
{ #category : #accessing }
CogAbstractInstruction >> bcpc [
^bcpc
]
{ #category : #accessing }
CogAbstractInstruction >> bcpc: theBcpc [
^bcpc := theBcpc
]
{ #category : #comparing }
CogAbstractInstruction >> between: min and: max [
"Support for CogBytecodeFixup>targetInstruction testing:"
<doNotGenerate>
| opcodesArray |
(min isInteger and: [max isInteger]) ifTrue:
[^false].
opcodesArray := cogit abstractOpcodes object.
^(opcodesArray identityIndexOf: self)
between: (opcodesArray identityIndexOf: min)
and: (opcodesArray identityIndexOf: max)
]
{ #category : #testing }
CogAbstractInstruction >> byteReadsZeroExtend [
"Answer if a byte read, via MoveAbR, MoveMbrR, or MoveXbrRR zero-extends
into the full register, or merely affects the least significant 8 bits of the
the register. By default the code generator assumes that byte reads
to not zero extend. Note that byte reads /must not/ sign extend."
^false
]
{ #category : #accessing }
CogAbstractInstruction >> cResultRegister [
"Answer the register through which C funcitons return integral results."
<inline: true>
self subclassResponsibility
]
{ #category : #accessing }
CogAbstractInstruction >> cStackPointer [
"Return the SP register for the current platform used by C code"
self subclassResponsibility
]
{ #category : #accessing }
CogAbstractInstruction >> callInstructionByteSize [
self subclassResponsibility
]
{ #category : #testing }
CogAbstractInstruction >> canDivQuoRem [
<inline: true>
^self subclassResponsibility
]
{ #category : #testing }
CogAbstractInstruction >> canMulRR [
<inline: true>
^self subclassResponsibility
]
{ #category : #testing }
CogAbstractInstruction >> canPushPopMultipleRegisters [
<inline: true>
^false
]
{ #category : #testing }
CogAbstractInstruction >> canSignExtend [
"Answer if the processor provides native sign extension instructions. If it does it must be able to generate
SignExtend8RR SignExtend16RR
and if 64-bits, SignExtend32RR."
<inline: true>
^false
]
{ #category : #testing }
CogAbstractInstruction >> canZeroExtend [
"Answer if the processor provides native zero extension instructions. If it does it must be able to generate
ZeroExtend8RR ZeroExtend16RR
and if 64-bits, ZeroExtend32RR."
<inline: true>
^false
]
{ #category : #initialization }
CogAbstractInstruction >> cloneLiteralFrom: existingLiteral [
"For out-of-line literal support, clone a literal from a literal."
<var: 'existingLiteral' type: #'AbstractInstruction *'>
self assert: (existingLiteral opcode = Literal and: [dependent isNil and: [address isNil]]).
opcode := Literal.
annotation := existingLiteral annotation.
operands
at: 0 put: (existingLiteral operands at: 0);
at: 1 put: (existingLiteral operands at: 1);
at: 2 put: (existingLiteral operands at: 2)
]
{ #category : #accessing }
CogAbstractInstruction >> cmpC32RTempByteSize [
self subclassResponsibility
]
{ #category : #accessing }
CogAbstractInstruction >> codeGranularity [
"Answer the size in bytes of a unit of machine code."
<inline: true>
^self subclassResponsibility
]
{ #category : #initialization }
CogAbstractInstruction >> cogit: aCogit [
<doNotGenerate>
cogit := aCogit.
objectMemory := aCogit objectMemory
]
{ #category : #'generate machine code' }
CogAbstractInstruction >> computeJumpTargetOffsetPlus: anPCOffset [
"Since it's an extraction from other methods."
<inline: true>
<var: #jumpTarget type: #sqInt>
| jumpTarget |
jumpTarget := self jumpTargetAddress.
^ jumpTarget - (cogit cCoerceSimple: address + anPCOffset to: #sqInt)
]
{ #category : #'generate machine code' }
CogAbstractInstruction >> concretizeAt: actualAddress [
"Generate concrete machine code for the instruction at actualAddress,
setting machineCodeSize, and answer the following address."
address := actualAddress.
self dispatchConcretize.
self assert: (maxSize = nil or: [maxSize >= machineCodeSize]).
^actualAddress + machineCodeSize
]
{ #category : #'generate machine code' }
CogAbstractInstruction >> concretizeFill32 [
"fill with operand 0 according to the processor's endianness"
self subclassResponsibility
]
{ #category : #'generate machine code' }
CogAbstractInstruction >> concretizeLabel [
<inline: true>
<var: #dependentChain type: #'AbstractInstruction *'>
| dependentChain |
dependentChain := dependent.
[dependentChain isNil] whileFalse:
[dependentChain updateLabel: self.
dependentChain := dependentChain dependent].
^machineCodeSize := 0
]
{ #category : #'as yet unclassified' }
CogAbstractInstruction >> concretizeMovePatcheableC32R [
"Move a 32 bit literal to a register.
This is patcheable instruction so it needs to be a fixed size instruction.
Subclasses decide to store the literal in many instructions or use a literal, depending on the literal manager strategy.
This instruction generator should never try to generate compact instructions, even if possible.
Or it should complete the size with NOPs"
self subclassResponsibility
]
{ #category : #simulation }
CogAbstractInstruction >> configureStackAlignment [
self subclassResponsibility
]
{ #category : #accessing }
CogAbstractInstruction >> dependent [
^dependent
]
{ #category : #accessing }
CogAbstractInstruction >> dependent: anInstruction [
^dependent := anInstruction
]
{ #category : #'full transfer run-time support' }
CogAbstractInstruction >> disassemble [
<doNotGenerate>
self disassembleOn: Transcript
]
{ #category : #'full transfer run-time support' }
CogAbstractInstruction >> disassembleOn: aStream [
<doNotGenerate>
cogit processor
disassembleFrom: 0
to: machineCodeSize - 1
in: machineCode object
on: aStream
]
{ #category : #accessing }
CogAbstractInstruction >> fillFrom: startMemoryAddr until: endMemoryAddr with: fillReg usingVr: vectorRegister [
<inline: true>
| fillLoop |
fillLoop := cogit MoveR: fillReg Mw: 0 r: startMemoryAddr.
cogit AddCq: 8 R: startMemoryAddr.
cogit CmpR: startMemoryAddr R: endMemoryAddr.
cogit JumpAbove: fillLoop.
^0 "Necessary to keep Slang happy"
]
{ #category : #abi }
CogAbstractInstruction >> fullCallsAreRelative [
"Answer if CallFull and/or JumpFull are relative and hence need relocating on method
compation. If so, they are annotated with IsRelativeCall in methods and relocated in
relocateIfCallOrMethodReference:mcpc:delta:"
self subclassResponsibility
]
{ #category : #abi }
CogAbstractInstruction >> genAlignCStackSavingRegisters: regMask numArgs: numArgs wordAlignment: alignment [
<inline: true>
| regMaskCopy numRegsPushed wordsPushedModAlignment delta |
<var: 'regMaskCopy' type: #usqInt>
regMaskCopy := regMask asUnsignedInteger.
numRegsPushed := 0.
[regMaskCopy ~= 0] whileTrue:
[numRegsPushed := numRegsPushed + (regMaskCopy bitAnd: 1).
regMaskCopy := regMaskCopy bitShift: -1].
(numRegsPushed = 0
and: [self numIntRegArgs >= numArgs]) ifTrue:
[^0].
wordsPushedModAlignment := numRegsPushed + numArgs \\ alignment.
wordsPushedModAlignment ~= 0 ifTrue:
[delta := alignment - wordsPushedModAlignment.
cogit SubCq: delta * objectMemory wordSize R: SPReg].
^0
]
{ #category : #abi }
CogAbstractInstruction >> genCaptureCStackPointers: captureFramePointer [
self hasVarBaseRegister ifTrue:
[cogit
PushR: VarBaseReg;
MoveCq: cogit varBaseAddress R: VarBaseReg].
captureFramePointer ifTrue:
[cogit MoveR: FPReg Aw: cogit cFramePointerAddress].
"Capture the stack pointer prior to the call. If we've pushed VarBaseReg take that into account."
(self leafCallStackPointerDelta ~= 0
or: [self hasVarBaseRegister])
ifTrue:
[cogit MoveR: self cStackPointer R: TempReg.
cogit AddCq: (self hasVarBaseRegister
ifTrue: [self leafCallStackPointerDelta + objectMemory wordSize]
ifFalse: [self leafCallStackPointerDelta]) R: TempReg.
cogit MoveR: TempReg Aw: cogit cStackPointerAddress]
ifFalse: [cogit MoveR: self cStackPointer Aw: cogit cStackPointerAddress].
self hasVarBaseRegister ifTrue:
[cogit PopR: VarBaseReg].
cogit RetN: 0.
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpFPEqual: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit gen: JumpFPEqual operand: jumpTarget asInteger
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpFPGreater: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit gen: JumpFPGreater operand: jumpTarget asInteger
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpFPGreaterOrEqual: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit gen: JumpFPGreaterOrEqual operand: jumpTarget asInteger
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpFPLess: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit gen: JumpFPLess operand: jumpTarget asInteger
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpFPLessOrEqual: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit gen: JumpFPLessOrEqual operand: jumpTarget asInteger
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpFPNotEqual: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit gen: JumpFPNotEqual operand: jumpTarget asInteger
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genJumpMultiplyOverflow: jumpTarget [
<inline: true>
<returnTypeC: #'AbstractInstruction *'>
<var: #jumpTarget type: #'void *'>
^cogit JumpOverflow: jumpTarget
]
{ #category : #'smalltalk calling convention' }
CogAbstractInstruction >> genLoadCStackPointer [
"Load the stack pointer register with that of the C stack, effecting
a switch to the C stack. Used when machine code calls into the
CoInterpreter run-time (e.g. to invoke interpreter primitives)."
self subclassResponsibility
]
{ #category : #'smalltalk calling convention' }
CogAbstractInstruction >> genLoadCStackPointers [
"Load the frame and stack pointer registers with those of the C stack,
effecting a switch to the C stack. Used when machine code calls into
the CoInterpreter run-time (e.g. to invoke interpreter primitives)."
self subclassResponsibility
]
{ #category : #'smalltalk calling convention' }
CogAbstractInstruction >> genLoadStackPointers [
"Switch back to the Smalltalk stack. Assign SPReg first
because typically it is used immediately afterwards."
self subclassResponsibility
]
{ #category : #abi }
CogAbstractInstruction >> genMarshallNArgs: numArgs arg: regOrConst0 arg: regOrConst1 arg: regOrConst2 arg: regOrConst3 [
"Generate the code to pass up to four arguments in a C run-time call. Hack: each argument is
either a negative number, which encodes a constant, or a non-negative number, that of a register.
Run-time calls have no more than four arguments, so chosen so that on ARM, where in its C ABI the
first four integer arguments are passed in registers, all arguments can be passed in registers. We
defer to the back end to generate this code not so much that the back end knows whether it uses
the stack or registers to pass arguments (it does, but...). In fact we defer for an extremely evil reason.
Doing so allows the x64 (where up to 6 args are passed) to assign the register arguments in an order
that allows some of the argument registers to be used for specific abstract registers, specifically
ReceiverResultReg and ClassReg. This is evil, evil, evil, but also it's really nice to keep using the old
register assignments the original author has grown accustomed to."
<inline: true>
^self subclassResponsibility
]
{ #category : #abi }
CogAbstractInstruction >> genMarshallNArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3 [
"Generate the code to pass up to four arguments in a C run-time call. Hack: each argument is
either a negative number, which encodes a constant, or a non-negative number, that of a register.
Run-time calls have no more than four arguments, so chosen so that on ARM, where in its C ABI the
first four integer arguments are passed in registers, all arguments can be passed in registers. We
defer to the back end to generate this code not so much that the back end knows whether it uses
the stack or registers to pass arguments (it does, but...). In fact we defer for an extremely evil reason.
Doing so allows the x64 (where up to 6 args are passed) to assign the register arguments in an order
that allows some of the argument registers to be used for specific abstract registers, specifically
ReceiverResultReg and ClassReg. This is evil, evil, evil, but also it's really nice to keep using the old
register assignments the original author has grown accustomed to."
<inline: true>
^self subclassResponsibility
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genMulR: regSource R: regDest [
"Generate whatever code necessary to do a bytesPerOop x bytesPerOop multiplication,
answering the first instruction uin the sequence."
<returnTypeC: #'AbstractInstruction *'>
self subclassResponsibility
]
{ #category : #'smalltalk calling convention' }
CogAbstractInstruction >> genPushRegisterArgsForAbortMissNumArgs: numArgs [
"Ensure that the register args are pushed before the outer and
inner retpcs at an entry miss for arity <= self numRegArgs. The
outer retpc is that of a call at a send site. The inner is the call
from a method or PIC abort/miss to the trampoline."
"This won't be as clumsy on a RISC. But putting the receiver and
args above the return address means the CoInterpreter has a
single machine-code frame format which saves us a lot of work."
"Iff there are register args convert
base -> outerRetpc (send site retpc)
sp -> innerRetpc (PIC abort/miss retpc)
to
base -> receiver
(arg0)
(arg1)
outerRetpc
sp -> innerRetpc (PIC abort/miss retpc)"
self subclassResponsibility
]
{ #category : #'smalltalk calling convention' }
CogAbstractInstruction >> genPushRegisterArgsForNumArgs: numArgs scratchReg: scratchReg [
"Ensure that the register args are pushed before the retpc for arity <= self numRegArgs.
This isn't as clumsy on a RISC. But putting the receiver and
args above the return address means the CoInterpreter has a
single machine-code frame format which saves us a lot of work."
"Iff there are register args convert
sp -> retpc (send site retpc)
to
base -> receiver
(arg0)
(arg1)
sp -> retpc (send site retpc)"
self subclassResponsibility
]
{ #category : #'smalltalk calling convention' }
CogAbstractInstruction >> genSaveStackPointers [
"Save the frame and stack pointer registers to the framePointer
and stackPointer variables. Used to save the machine code frame
for use by the run-time when calling into the CoInterpreter run-time."
self subclassResponsibility
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genSubstituteReturnAddress: retpc [
"Fake the return address for a call/jump so that the ``call'' returns
to retpc given that the ``call'' will be made by a following jump."
self subclassResponsibility
]
{ #category : #'abstract instructions' }
CogAbstractInstruction >> genSwapR: regA R: regB Scratch: regTmp [
"Generic register swap code. Subclasses for processors that have a true exchange operation will override to use it."
| first |
<var: 'first' type: #'AbstractInstruction *'>
first :=
cogit MoveR: regA R: regTmp.
cogit MoveR: regB R: regA.
cogit MoveR: TempReg R: regB.
^first
]
{ #category : #abi }
CogAbstractInstruction >> genWriteCResultIntoReg: abstractRegister [
| cResultReg |
cResultReg := self cResultRegister.
abstractRegister ~= cResultReg ifTrue:
[cogit gen: MoveRR operand: cResultReg operand: abstractRegister]
]