UnicornARMv8Simulator.class.st

Class {
	#name : #UnicornARMv8Simulator,
	#superclass : #UnicornSimulator,
	#category : #'VMMakerTests-Unicorn'
}

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> arg0Register [
	
	^ UcARM64Registers x3
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> arg1Register [
	
	^ UcARM64Registers x4
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> arg2Register [
	
	^ UcARM64Registers x2
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> arg3Register [
	
	^ UcARM64Registers x3
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> argument1RegisterValue: anInteger [ 

	self writeRegister: UcARM64Registers x4 value: anInteger
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> baseRegister [

	^ UcARM64Registers x24
]

{ #category : #'c calling convention' }
UnicornARMv8Simulator >> cResultRegister [
	
	^ UcARM64Registers x0
]

{ #category : #'c calling convention' }
UnicornARMv8Simulator >> carg0Register [
	
	^ UcARM64Registers x0
]

{ #category : #'c calling convention' }
UnicornARMv8Simulator >> carg1Register [
	
	^ UcARM64Registers x1
]

{ #category : #'c calling convention' }
UnicornARMv8Simulator >> carg2Register [
	
	^ UcARM64Registers x2
]

{ #category : #'c calling convention' }
UnicornARMv8Simulator >> carg3Register [
	
	^ UcARM64Registers x3
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> carry [

	^ (self nzcv bitAnd: (1<<29))~= 0
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> classRegister [
	
	^ UcARM64Registers x22
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> cpacr_el1 [
	
	^ self readRegister: UcARM64Registers cpacr_el1
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> cpacr_el1: anInteger [ 
	
	self writeRegister: UcARM64Registers cpacr_el1 value: anInteger
]

{ #category : #initialization }
UnicornARMv8Simulator >> createUnicorn [

	simulator := Unicorn arm64.
	"Enable floating point..."
	self cpacr_el1: (self cpacr_el1 bitOr: 2r11 << 20).
	^ simulator
]

{ #category : #disassembling }
UnicornARMv8Simulator >> disassembler [
	
	^ LLVMARMDisassembler aarch64
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> doublePrecisionFloatingPointRegister0 [

	^ UcARM64Registers d0
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> doublePrecisionFloatingPointRegister1 [

	^ UcARM64Registers d1
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> doublePrecisionFloatingPointRegister2 [

	^ UcARM64Registers d2
]

{ #category : #disassembling }
UnicornARMv8Simulator >> extractDestinationRegisterFromAssembly: aLLVMInstruction [ 
	
	"In ARM, instructions are usually encoded asSpotterCandidateLink 
	
	INST Destination, Source
	"
	
	^ (aLLVMInstruction assemblyCodeString substrings: String tab, ',') second trimBoth.
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> framePointerRegister [
	
	^ UcARM64Registers fp
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> getReturnAddress [
	
	^ self linkRegisterValue
]

{ #category : #testing }
UnicornARMv8Simulator >> hasLinkRegister [
	^ true
]

{ #category : #initialization }
UnicornARMv8Simulator >> initializeRegisterAliases [

	registerAliases
		at: #x22 put: #classRegister;
		at: #x23 put: #receiverRegister;
		at: #x25 put: #sendNumberOfArgumentsRegister;
		at: #x24 put: #baseRegister;
		at: #x28 put: #vmStackPointer;
		at: #x29 put: #framePointerRegister;
		at: #x30 put: #linkRegister
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> instructionPointerRegister [

	^ UcARM64Registers pc
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> linkRegister [
	
	^ UcARM64Registers x30
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> negative [

	^ (self nzcv bitAnd: (1<<31))~= 0
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> nzcv [

	^ self readRegister: UcARM64Registers nzcv 
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> overflow [

	^ (self nzcv bitAnd: (1<<28)) ~= 0
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> postCallArgumentsNumArgs: numArgs "<Integer>" in: aMemory [ "<ByteArray|Bitmap>"
	"Answer an argument vector of the requested size after a vanilla
	 ABI call. For ARM the Procedure Calling Specification can be found in IHI0042D_aapcs.pdf.
	On ARM this typically means accessing r0 through r3 and fetching additional arguments from the stack, acording to pages 20f. aapcs.
	We assume that all arguments are single word arguments, which can not be supplied on co-processor-registers.
	 For compatibility with Cog/Slang we answer unsigned values."
	^(1 to: numArgs) collect: [:i |
		i < 5 
			ifTrue: [self perform: (self registerStateGetters at: i)]
			"ARM uses a full descending stack. Directly after calling a procedure, nothing but the arguments are pushed."
			ifFalse: [memory unsignedLongAt: self sp + (i-5)*4 bigEndian: false]].
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> receiverRegister [
	
	^ UcARM64Registers x23
]

{ #category : #accessing }
UnicornARMv8Simulator >> registerList [

	^ #(lr pc sp fp x28 x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x16 x19 x20 x21 x22 x23 x24 x25 x26 x27 zero negative carry overflow v0 v1 v2)

]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> registerStateGetters [

	^#(	x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x12 sp lr pc)
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> retpcIn: aMemory [ 

	^ memory longAt: self fp + 8
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> sendNumberOfArgumentsRegister [
	
	^ UcARM64Registers x25
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> simulateJumpCallOf: address memory: aMemory [
	"Simulate a frame-building jump of address.  Build a frame since
	a) this is used for calls into the run-time which are unlikely to be leaf-calls"
	"This method builds a stack frame as expected by the simulator, not as defined by ARM aapcs-abi.
	In ARM aapcs, every method can define for itself, wether it wants to push lr (nextpc), and wether it 
	uses a frame pointer. The standard never mentions a fp. It merely defines r4-r11 to be callee-saved."
	
	self assert: self sp \\ 8 = 0. "This check ensures, that we conform with ARM abi. Before doing anything to the stack, we ensure 2-word alignment."

	self pushWord: self linkRegisterValue.
	self pushWord: self fp.
	self framePointerRegisterValue: self stackPointerRegisterValue.

	self instructionPointerRegisterValue: address
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> simulateLeafCallOf: address nextpc: nextpc memory: aMemory [
	
	self lr: nextpc.
	self pc: address
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> simulateReturnIn: aSpurSimulatedMemory [ 

	self framePointerRegisterValue: self popWord.
	self linkRegisterValue: self popWord.

	self instructionPointerRegisterValue: self linkRegisterValue

]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> smalltalkStackPointerRegister [
	"Internally to execute Smalltalk code we use X28 as the stack pointer register"
	^ UcARM64Registers x28
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> smashCallerSavedRegistersWithValuesFrom: base by: step in: aMemory [

	#(x0: x1: x2: x3: x4: x5: lr:) withIndexDo:
		[:accessor :index|
		self perform: accessor with: index - 1 * step + base]
]

{ #category : #'simulation-support' }
UnicornARMv8Simulator >> smashRegisterAccessors [
	
	"Caller saved registers to smash"
	^#( x0: x1: x2: x3: x4: x5: x6: x7: x8: x9: x10: x11: x12: )
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> stackPointerRegister [
	
	^ UcARM64Registers sp
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> temporaryRegister [

	^ UcARM64Registers x1
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> v0 [

	^ self readRawRegister: UcARM64Registers v0 size: 16
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> v1 [

	^ self readRawRegister: UcARM64Registers v1 size: 16
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> v2 [

	^ self readRawRegister: UcARM64Registers v2 size: 16
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> vectorRegister0Value [

	^ simulator readRegisterId: UcARM64Registers v0 size:  16
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> vectorRegister1Value [

	^ simulator readRegisterId: UcARM64Registers v1 size:  16
]

{ #category : #'accessing-registers-abstract' }
UnicornARMv8Simulator >> vectorRegister2Value [

	^ simulator readRegisterId: UcARM64Registers v2 size:  16
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> w25: anInteger [ 

	self writeRegister: UcARM64Registers w25 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> w6: anInteger [ 

	self writeRegister: UcARM64Registers w6 value: anInteger
]

{ #category : #accessing }
UnicornARMv8Simulator >> wordSize [
	^ 8
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x0 [

	^ self readRegister: UcARM64Registers x0
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x0: anInteger [ 
	
	self writeRegister: UcARM64Registers x0 value: anInteger 
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x1 [

	^ self readRegister: UcARM64Registers x1
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x10 [

	^ self readRegister: UcARM64Registers x10
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x10: anInteger [ 

	^ self writeRegister: UcARM64Registers x10 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x11 [

	^ self readRegister: UcARM64Registers x11
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x11: anInteger [ 

	^ self writeRegister: UcARM64Registers x11 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x12 [

	^ self readRegister: UcARM64Registers x12
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x12: anInteger [ 

	^ self writeRegister: UcARM64Registers x12 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x13: anInteger [ 
	
	self writeRegister: UcARM64Registers x13 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x14: anInteger [ 

	self writeRegister: UcARM64Registers x14 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x15: anInteger [ 

	self writeRegister: UcARM64Registers x15 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x16 [
	
	^ self readRegister: UcARM64Registers x16
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x16: anInteger [ 
	
	self writeRegister: UcARM64Registers x16 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x17: anInteger [ 

	self writeRegister: UcARM64Registers x17 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x18: anInteger [ 

	self writeRegister: UcARM64Registers x18 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x19 [
	
	^ self readRegister: UcARM64Registers x19
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x19: anInteger [ 
	
	self writeRegister: UcARM64Registers x19 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x1: anInteger [ 

	^ self writeRegister: UcARM64Registers x1 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x2 [

	^ self readRegister: UcARM64Registers x2
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x20 [
	
	^ self readRegister: UcARM64Registers x20
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x20: anInteger [ 
	
	self writeRegister: UcARM64Registers x20 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x21 [

	^ self readRegister: UcARM64Registers x21
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x21: anInteger [ 
	
	self writeRegister: UcARM64Registers x21 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x22 [
	
	^ self readRegister: UcARM64Registers x22
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x22: anInteger [ 
	
	self writeRegister: UcARM64Registers x22 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x23 [

	^ self readRegister: UcARM64Registers x23
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x23: anInteger [ 
	
	self writeRegister: UcARM64Registers x23 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x24 [

	^ self readRegister: UcARM64Registers x24
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x24: anInteger [ 
	
	self writeRegister: UcARM64Registers x24 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x25 [

	^ self readRegister: UcARM64Registers x25
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x25: anInteger [ 
	
	self writeRegister: UcARM64Registers x25 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x26 [

	^ self readRegister: UcARM64Registers x26
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x26: anInteger [

	self writeRegister: UcARM64Registers x26 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x27 [

	^ self readRegister: UcARM64Registers x27
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x27: anInteger [

	self writeRegister: UcARM64Registers x27 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x28 [

	^ self readRegister: UcARM64Registers x28
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x28: anInteger [ 
	
	self writeRegister: UcARM64Registers x28 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x29: anInteger [ 
	
	^ self writeRegister: UcARM64Registers x29 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x2: anInteger [ 

	^ self writeRegister: UcARM64Registers x2 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x3 [

	^ self readRegister: UcARM64Registers x3
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x30: anInteger [ 
	
	self writeRegister: UcARM64Registers x30 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x3: anInteger [ 

	^ self writeRegister: UcARM64Registers x3 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x4 [

	^ self readRegister: UcARM64Registers x4
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x4: anInteger [ 

	^ self writeRegister: UcARM64Registers x4 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x5 [

	^ self readRegister: UcARM64Registers x5
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x5: anInteger [ 

	^ self writeRegister: UcARM64Registers x5 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x6 [

	^ self readRegister: UcARM64Registers x6
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x6: anInteger [ 

	^ self writeRegister: UcARM64Registers x6 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x7 [

	^ self readRegister: UcARM64Registers x7
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x7: anInteger [ 

	^ self writeRegister: UcARM64Registers x7 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x8 [

	^ self readRegister: UcARM64Registers x8
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x8: anInteger [ 

	^ self writeRegister: UcARM64Registers x8 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x9 [

	^ self readRegister: UcARM64Registers x9
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> x9: anInteger [ 

	^ self writeRegister: UcARM64Registers x9 value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> xzr [
	
	^ self readRegister: UcARM64Registers xzr
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> xzr: anInteger [ 

	^ self writeRegister: UcARM64Registers xzr value: anInteger
]

{ #category : #'accessing-registers-physical' }
UnicornARMv8Simulator >> zero [

	^ (self nzcv bitAnd: (1<<30)) ~= 0
]