Christoph Thiede uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-ct.1489.mcz
==================== Summary ====================
Name: Kernel-ct.1489 Author: ct Time: 20 September 2022, 7:37:02.446047 pm UUID: 3802342b-ecab-394f-9719-376ed6f8dd9a Ancestors: Kernel-eem.1488
Fixes a slip in simulation of primitive 83 (primitivePerform). If the selector is not a symbol, do not attempt to check its arity like the VM does, so an invalid message is sent, but the simulator does not crash.
=============== Diff against Kernel-eem.1488 ===============
Item was changed: ----- Method: Context>>doPrimitive:method:receiver:args: (in category 'private') ----- doPrimitive: primitiveIndex method: meth receiver: receiver args: arguments "Simulate a primitive method whose index is primitiveIndex. The simulated receiver and arguments are given as arguments to this message. If successful, push result and return resuming context, else ^ {errCode, PrimitiveFailToken}. Any primitive which provokes execution needs to be intercepted and simulated to avoid execution running away."
| value | "Judicious use of primitive 19 (a null primitive that doesn't do anything) prevents the debugger from entering various run-away activities such as spawning a new process, etc. Injudicious use results in the debugger not being able to debug interesting code, such as the debugger itself. Hence use primitive 19 with care :-)" "SystemNavigation new browseAllSelect: [:m| m primitive = 19]" primitiveIndex = 19 ifTrue: [ [self notify: ('The code being simulated is trying to control a process ({1}). Process controlling cannot be simulated. If you proceed, things may happen outside the observable area of the simulator.' translated format: {meth reference})] ifCurtailed: [self push: nil "Cheap fix of the context's internal state"]]. ((primitiveIndex between: 201 and: 222) and: [(self objectClass: receiver) includesBehavior: BlockClosure]) ifTrue: [(primitiveIndex = 206 or: [primitiveIndex = 208]) ifTrue: "[Full]BlockClosure>>valueWithArguments:" [^receiver simulateValueWithArguments: arguments first caller: self]. ((primitiveIndex between: 201 and: 209) "[Full]BlockClosure>>value[:value:...]" or: [primitiveIndex between: 221 and: 222]) ifTrue: "[Full]BlockClosure>>valueNoContextSwitch[:]" [^receiver simulateValueWithArguments: arguments caller: self]].
primitiveIndex = 83 ifTrue: "afr 9/11/1998 19:50" "Object>>perform:[with:...]" [| selector | selector := arguments at: 1 ifAbsent: [^ self class primitiveFailTokenFor: #'bad argument']. + (selector isSymbol and: [arguments size - 1 ~= selector numArgs]) ifTrue: - arguments size - 1 = selector numArgs ifFalse: [^ self class primitiveFailTokenFor: #'bad number of arguments']. ^self send: selector to: receiver with: arguments allButFirst]. primitiveIndex = 84 ifTrue: "afr 9/11/1998 19:50 & eem 8/18/2009 17:04" "Object>>perform:withArguments:" [| selector args | arguments size = 2 ifFalse: [^ self class primitiveFailTokenFor: #'bad argument']. selector := arguments first. args := arguments second. args isArray ifFalse: [^ self class primitiveFailTokenFor: #'bad argument']. args size = selector numArgs ifFalse: [^ self class primitiveFailTokenFor: #'bad number of arguments']. ^self send: selector to: receiver with: args]. primitiveIndex = 100 ifTrue: "eem 8/18/2009 16:57" "Object>>perform:withArguments:inSuperclass:" [| rcvr selector args superclass | arguments size caseOf: { [3] -> [ rcvr := receiver. selector := arguments first. args := arguments second. superclass := arguments third]. [4] -> ["mirror primitive" rcvr := arguments first. selector := arguments second. args := arguments third. superclass := arguments fourth] } otherwise: [^ self class primitiveFailTokenFor: #'bad number of arguments']. args isArray ifFalse: [^ self class primitiveFailTokenFor: #'bad argument']. args size = selector numArgs ifFalse: [^ self class primitiveFailTokenFor: #'bad number of arguments']. ((self objectClass: rcvr) includesBehavior: superclass) ifFalse: [^ self class primitiveFailTokenFor: #'bad argument']. ^self send: selector to: rcvr with: args lookupIn: superclass].
"Mutex>>primitiveEnterCriticalSection Mutex>>primitiveTestAndSetOwnershipOfCriticalSection" (primitiveIndex = 186 or: [primitiveIndex = 187]) ifTrue: [| effective | effective := Processor activeProcess effectiveProcess. "active == effective" value := primitiveIndex = 186 ifTrue: [receiver primitiveEnterCriticalSectionOnBehalfOf: effective] ifFalse: [receiver primitiveTestAndSetOwnershipOfCriticalSectionOnBehalfOf: effective]. ^(self isPrimFailToken: value) ifTrue: [value] ifFalse: [self push: value]].
primitiveIndex = 188 ifTrue: "Object>>withArgs:executeMethod: CompiledMethod class>>receiver:withArguments:executeMethod: VMMirror>>ifFail:object:with:executeMethod: et al" [| n args methodArg thisReceiver | ((n := arguments size) between: 2 and: 4) ifFalse: [^self class primitiveFailTokenFor: #'unsupported operation']. ((self objectClass: (args := arguments at: n - 1)) == Array and: [(self objectClass: (methodArg := arguments at: n)) includesBehavior: CompiledMethod]) ifFalse: [^self class primitiveFailTokenFor: #'bad argument']. methodArg numArgs = args size ifFalse: [^self class primitiveFailTokenFor: #'bad number of arguments']. thisReceiver := arguments at: n - 2 ifAbsent: [receiver]. methodArg primitive > 0 ifTrue: [methodArg isQuick ifTrue: [^self push: (methodArg valueWithReceiver: thisReceiver arguments: args)]. ^self doPrimitive: methodArg primitive method: methodArg receiver: thisReceiver args: args]. ^self activateMethod: methodArg withArgs: args receiver: thisReceiver].
primitiveIndex = 118 ifTrue: "[receiver:]tryPrimitive:withArgs:; avoid recursing in the VM" [(arguments size = 3 and: [(self objectClass: arguments second) == SmallInteger and: [(self objectClass: arguments last) == Array]]) ifTrue: [^self doPrimitive: arguments second method: meth receiver: arguments first args: arguments last]. (arguments size = 2 and: [(self objectClass: arguments first) == SmallInteger and: [(self objectClass: arguments last) == Array]]) ifFalse: [^self class primitiveFailTokenFor: nil]. ^self doPrimitive: arguments first method: meth receiver: receiver args: arguments last].
value := primitiveIndex = 120 "FFI method" ifTrue: [(meth literalAt: 1) tryInvokeWithArguments: arguments] ifFalse: [primitiveIndex = 117 "named primitives" ifTrue: [self tryNamedPrimitiveIn: meth for: receiver withArgs: arguments] ifFalse: "should use self receiver: receiver tryPrimitive: primitiveIndex withArgs: arguments but this is only in later VMs (and appears to be broken)" [receiver tryPrimitive: primitiveIndex withArgs: arguments]].
^(self isPrimFailToken: value) ifTrue: [value] ifFalse: [self push: value]!