[Vm-dev] VM Maker: VMMaker.oscog-eem.177.mcz
commits at source.squeak.org
commits at source.squeak.org
Wed Jun 27 19:27:43 UTC 2012
Eliot Miranda uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-eem.177.mcz
==================== Summary ====================
Name: VMMaker.oscog-eem.177
Author: eem
Time: 27 June 2012, 12:25:12.409 pm
UUID: 4d05e29b-763c-451f-9354-f5f0cef201a1
Ancestors: VMMaker.oscog-eem.176
Add internalStackValue:put:.
Comment the purpose of the prim response routines.
=============== Diff against VMMaker.oscog-eem.176 ===============
Item was changed:
----- Method: CoInterpreter>>slowPrimitiveResponse (in category 'primitive support') -----
slowPrimitiveResponse
+ "Invoke a normal (non-quick) primitive.
+ Called under the assumption that primFunctionPtr has been preloaded"
- "Called under the assumption that primFunctionPtr has been preloaded"
| nArgs savedFramePointer savedStackPointer |
<inline: true>
<asmLabel: false>
<var: #savedFramePointer type: #'char *'>
<var: #savedStackPointer type: #'char *'>
cogit recordPrimTrace ifTrue:
[self fastLogPrim: messageSelector].
FailImbalancedPrimitives ifTrue:
[nArgs := argumentCount.
savedStackPointer := stackPointer.
savedFramePointer := framePointer].
self initPrimCall.
self dispatchFunctionPointer: primitiveFunctionPointer.
(FailImbalancedPrimitives
and: [self successful
and: [framePointer = savedFramePointer
and: [(self isMachineCodeFrame: framePointer) not]]]) ifTrue:"Don't fail if primitive has done something radical, e.g. perform:"
[stackPointer ~= (savedStackPointer + (nArgs * BytesPerWord)) ifTrue:
[self flag: 'Would be nice to make this a message send of e.g. unbalancedPrimitive to the current process or context'.
"This is necessary but insufficient; the result may still have been written to the stack.
At least we'll know something is wrong."
stackPointer := savedStackPointer.
self failUnbalancedPrimitive]].
"If we are profiling, take accurate primitive measures"
nextProfileTick > 0 ifTrue:
[self checkProfileTick: newMethod].
^self successful!
Item was changed:
----- Method: StackInterpreter>>externalQuickPrimitiveResponse (in category 'primitive support') -----
externalQuickPrimitiveResponse
+ "Invoke a quick primitive.
+ Called under the assumption that primFunctionPtr has been preloaded"
- "Called under the assumption that primFunctionPtr has been preloaded"
| localPrimIndex |
self assert: self isPrimitiveFunctionPointerAnIndex.
localPrimIndex := self cCoerceSimple: primitiveFunctionPointer to: #sqInt.
self assert: (localPrimIndex > 255 and: [localPrimIndex < 520]).
"Quick return inst vars"
localPrimIndex >= 264 ifTrue:
[self pop: 1 thenPush: (objectMemory fetchPointer: localPrimIndex - 264 ofObject: self stackTop).
^true].
"Quick return constants"
localPrimIndex = 256 ifTrue: [^true "return self"].
localPrimIndex = 257 ifTrue: [self pop: 1 thenPush: objectMemory trueObject. ^true].
localPrimIndex = 258 ifTrue: [self pop: 1 thenPush: objectMemory falseObject. ^true].
localPrimIndex = 259 ifTrue: [self pop: 1 thenPush: objectMemory nilObject. ^true].
self pop: 1 thenPush: (objectMemory integerObjectOf: localPrimIndex - 261).
^true!
Item was changed:
----- Method: StackInterpreter>>internalQuickPrimitiveResponse (in category 'primitive support') -----
internalQuickPrimitiveResponse
+ "Invoke a quick primitive.
+ Called under the assumption that primFunctionPtr has been preloaded"
- "Called under the assumption that primFunctionPtr has been preloaded"
| localPrimIndex |
self assert: self isPrimitiveFunctionPointerAnIndex.
localPrimIndex := self cCoerceSimple: primitiveFunctionPointer to: #sqInt.
self assert: (localPrimIndex > 255 and: [localPrimIndex < 520]).
"Quick return inst vars"
localPrimIndex >= 264 ifTrue:
[self internalStackTopPut: (objectMemory fetchPointer: localPrimIndex - 264 ofObject: self internalStackTop).
^true].
"Quick return constants"
localPrimIndex = 256 ifTrue: [^true "return self"].
localPrimIndex = 257 ifTrue: [self internalStackTopPut: objectMemory trueObject. ^true].
localPrimIndex = 258 ifTrue: [self internalStackTopPut: objectMemory falseObject. ^true].
localPrimIndex = 259 ifTrue: [self internalStackTopPut: objectMemory nilObject. ^true].
self internalStackTopPut: (objectMemory integerObjectOf: localPrimIndex - 261).
^true!
Item was added:
+ ----- Method: StackInterpreter>>internalStackValue:put: (in category 'internal interpreter access') -----
+ internalStackValue: offset put: aValue
+ "In the StackInterpreter stacks grow down."
+ ^stackPages longAtPointer: localSP + (offset * BytesPerWord) put: aValue!
Item was changed:
----- Method: StackInterpreter>>slowPrimitiveResponse (in category 'primitive support') -----
slowPrimitiveResponse
+ "Invoke a normal (non-quick) primitive.
+ Called under the assumption that primFunctionPtr has been preloaded"
- "Called under the assumption that primFunctionPtr has been preloaded"
| nArgs savedFramePointer savedStackPointer |
<inline: true>
<asmLabel: false>
<var: #savedFramePointer type: #'char *'>
<var: #savedStackPointer type: #'char *'>
FailImbalancedPrimitives ifTrue:
[nArgs := argumentCount.
savedStackPointer := stackPointer.
savedFramePointer := framePointer].
self initPrimCall.
self dispatchFunctionPointer: primitiveFunctionPointer.
(FailImbalancedPrimitives
and: [self successful
and: [framePointer = savedFramePointer]]) ifTrue:"Don't fail if primitive has done something radical, e.g. perform:"
[stackPointer ~= (savedStackPointer + (nArgs * BytesPerWord)) ifTrue:
[self flag: 'Would be nice to make this a message send of e.g. unbalancedPrimitive to the current process or context'.
"This is necessary but insufficient; the result may still have been written to the stack.
At least we'll know something is wrong."
stackPointer := savedStackPointer.
self failUnbalancedPrimitive]].
"If we are profiling, take accurate primitive measures"
nextProfileTick > 0 ifTrue:
[self checkProfileTick: newMethod].
^self successful!
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