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The Trunk: Kernel-ct.1448.mcz
by commits@source.squeak.org
02 Mar '24
02 Mar '24
Christoph Thiede uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-ct.1448.mcz
==================== Summary ==================== Name: Kernel-ct.1448 Author: ct Time: 12 March 2022, 12:42:08.516359 am UUID: 7659c202-5fcc-084e-84b4-a5d233717b2d Ancestors: Kernel-nice.1447 Implements missing simulation of primitive 189 primitiveExecuteMethod (Object>>with:...executeMethod:). =============== Diff against Kernel-nice.1447 =============== 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']. 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 argument']. 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 or: [primitiveIndex = 189]) ifTrue: - - primitiveIndex = 188 ifTrue: "Object>>withArgs:executeMethod: - CompiledMethod class>>receiver:withArguments:executeMethod: - VMMirror>>ifFail:object:with:executeMethod: et al" [| n args methodArg thisReceiver | + primitiveIndex caseOf: + {[188 "primitiveExecuteMethodArgsArray"] -> + ["Object>>withArgs:executeMethod: + CompiledMethod class>>receiver:withArguments:executeMethod: + VMMirror>>ifFail:object:with:executeMethod: et al" + ((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']. + thisReceiver := arguments at: n - 2 ifAbsent: [receiver]]. + [189 "primitiveExecuteMethod"] -> + ["Object>>executeMethod: + Object>>with:...executeMethod:" + (arguments size > 0) ifFalse: + [^self class primitiveFailTokenFor: #'bad argument']. + ((self objectClass: (methodArg := arguments atLast: 1)) includesBehavior: CompiledMethod) ifFalse: + [^self class primitiveFailTokenFor: #'bad argument']. + args := arguments allButLast. + thisReceiver := receiver]}. - ((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: meth 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]!
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