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VMContextAccessTest.class.st
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VMContextAccessTest.class.st
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Class {
#name : #VMContextAccessTest,
#superclass : #VMSimpleStackBasedCogitAbstractTest,
#category : #'VMMakerTests-JitTests'
}
{ #category : #'as yet unclassified' }
VMContextAccessTest >> assertContext: newContext equals: contextOop onInstVar: anIndex [
| originalPC copiedPC |
interpreter longPrintOop: contextOop.
interpreter longPrintOop: newContext.
originalPC := interpreter instVar: anIndex ofContext: contextOop.
copiedPC := interpreter instVar: anIndex ofContext: newContext.
self assert: copiedPC equals: originalPC
]
{ #category : #tests }
VMContextAccessTest >> pushActiveContext [
interpreter pushActiveContextBytecode.
^ interpreter stackTop
]
{ #category : #running }
VMContextAccessTest >> setUp [
"taken from VMSimpleStackBasedCogitBytecodeTest >> #setup"
| newMethod ctx page |
super setUp.
"Create the root context with a valid method"
"Let's create a method with enough size. It should have at least a literal (4 or 8 bytes depending the word size) and some bytecodes, so we can put the IP inside the method"
newMethod := methodBuilder newMethod buildMethod.
"The context has 5 (in 32 bits) or 9 (in 64 bits) as initial IP, as method has at least one literal"
ctx := self
newSmallContextReceiver: memory nilObject
method: newMethod
arguments: #( )
temporaries: #( )
ip: self wordSize + 1.
"The base context has a trampoline as the savedIP so it can return to a context that is in the heap"
cogit ceBaseFrameReturnTrampoline: 16rAABBCCDD.
page := interpreter makeBaseFrameFor: ctx.
interpreter setStackPointersFromPage: page.
interpreter setStackPageAndLimit: page.
interpreter instructionPointer: interpreter popStack.
self setUpScheduler.
self setContextClassIntoClassTable.
self initializeOldSpaceForFullGC
]
{ #category : #tests }
VMContextAccessTest >> testCloningTopContextHasCorrectPC [
| contextOop newContext |
contextOop := self pushActiveContext.
interpreter primitiveClone.
newContext := interpreter popStack.
self assertContext: newContext equals: contextOop onInstVar: InstructionPointerIndex.
]
{ #category : #tests }
VMContextAccessTest >> testCloningTopContextHasCorrectPCAfterFullGC [
| contextOop newContext |
contextOop := self pushActiveContext.
CloneOnGC := false.
memory fullGC.
interpreter primitiveClone.
newContext := interpreter popStack.
self assertContext: newContext equals: contextOop onInstVar: InstructionPointerIndex.
]
{ #category : #tests }
VMContextAccessTest >> testCloningTopContextHasCorrectReceiver [
| contextOop newContext |
contextOop := self pushActiveContext.
interpreter primitiveClone.
newContext := interpreter popStack.
self assertContext: newContext equals: contextOop onInstVar: ReceiverIndex.
]
{ #category : #tests }
VMContextAccessTest >> testCloningTopContextHasCorrectSenderWhenItIsNil [
| contextOop newContext |
contextOop := self pushActiveContext.
interpreter primitiveClone.
newContext := interpreter popStack.
self assertContext: newContext equals: contextOop onInstVar: SenderIndex.
]