[Vm-dev] VM Maker: BytecodeSets-eem.3.mcz
commits at source.squeak.org
commits at source.squeak.org
Mon Jul 7 16:29:59 UTC 2014
Eliot Miranda uploaded a new version of BytecodeSets to project VM Maker:
http://source.squeak.org/VMMaker/BytecodeSets-eem.3.mcz
==================== Summary ====================
Name: BytecodeSets-eem.3
Author: eem
Time: 7 July 2014, 9:29:53.349 am
UUID: 811864c1-641a-48ce-a3d5-ca6ed3a5c672
Ancestors: BytecodeSets-eem.2
Add some missing Newspeak V3 & V4 methods.
=============== Diff against BytecodeSets-eem.2 ===============
Item was changed:
+ ----- Method: InstructionClient>>pushExplicitOuter: (in category '*BytecodeSets-NewsqueakV3-decoding') -----
- ----- Method: InstructionClient>>pushExplicitOuter: (in category '*BytecodeSets-NewsqueakV3-instruction decoding') -----
pushExplicitOuter: n
"Push the Active Context's Receiver for an outer send at level n."
self subclassResponsibility!
Item was added:
+ ----- Method: InstructionClient>>sendToAbsentDynamicSuperclass:numArgs: (in category '*BytecodeSets-NewsqueakV4-decoding') -----
+ sendToAbsentDynamicSuperclass: selector "<Symbol>" numArgs: arity "<SmallInteger>"
+ "Send Message With Selector, selector to the dynamic superclass.
+ The arguments of the message are found in the top numArgs locations
+ on the stack and the receiver is implicitly the receiver of the current method activation."!
Item was changed:
+ ----- Method: InstructionPrinter>>pushExplicitOuter: (in category '*BytecodeSets-NewsqueakV3-decoding') -----
- ----- Method: InstructionPrinter>>pushExplicitOuter: (in category '*BytecodeSets-NewsqueakV3-instruction decoding') -----
pushExplicitOuter: n
"Print the Push the Active Context's Receiver for an outer send at level (method literalAt: litIndex) bytecode."
self print: 'pushExplicitOuter: ', n asString!
Item was changed:
+ ----- Method: InstructionPrinter>>pushImplicitReceiverForMessage: (in category '*BytecodeSets-NewsqueakV3-decoding') -----
- ----- Method: InstructionPrinter>>pushImplicitReceiverForMessage: (in category '*BytecodeSets-NewsqueakV3-instruction decoding') -----
pushImplicitReceiverForMessage: aSymbol
"Print the Push Active Context's Receiver for an outer send of aSymbol on Top Of Stack bytecode."
self print: 'pushImplicitReceiverFor: ', aSymbol asString!
Item was changed:
+ ----- Method: InstructionPrinter>>sendToAbsentDynamicSuperclass:numArgs: (in category '*BytecodeSets-NewsqueakV4-decoding') -----
+ sendToAbsentDynamicSuperclass: selector "<Symbol>" numArgs: numArgs "<SmallInteger>"
+ self print: '(absent receiver) dynamicSuperSend: ' , (self stringForSelector: selector numArgs: numArgs)!
- ----- Method: InstructionPrinter>>sendToAbsentDynamicSuperclass:numArgs: (in category '*BytecodeSets-NewsqueakV4-instruction decoding') -----
- sendToAbsentDynamicSuperclass: selector "<Symbol>" numArgs: arity "<SmallInteger>"
- self print: '(absent receiver) dynamicSuperSend: ', selector!
Item was changed:
+ ----- Method: InstructionPrinter>>sendToAbsentImplicitReceiver:numArgs: (in category '*BytecodeSets-NewsqueakV4-decoding') -----
- ----- Method: InstructionPrinter>>sendToAbsentImplicitReceiver:numArgs: (in category '*BytecodeSets-NewsqueakV4-instruction decoding') -----
sendToAbsentImplicitReceiver: selector "<Symbol>" numArgs: arity "<SmallInteger>"
self print: '(absent receiver) implicitReceiverSend: ', selector!
Item was added:
+ ----- Method: InstructionStream>>interpretNSV4ExtendedPush:for: (in category '*BytecodeSets-NewsqueakV4-decoding') -----
+ interpretNSV4ExtendedPush: extB for: client
+ "Implement the extended push for non-zero extensions."
+ "77 01001101 Push false [* 1:true, 2:nil, 3:thisContext, ..., -N: pushExplicitOuter: N, N = Extend B]"
+ extB < 0 ifTrue:
+ [^client pushExplicitOuter: extB negated].
+ extB < 2 ifTrue:
+ [^client pushConstant: extB = 1].
+ extB = 2 ifTrue:
+ [^client pushConstant: nil].
+ extB = 3 ifTrue:
+ [^client pushActiveContext].
+ self error: 'undefined extended push'!
Item was changed:
----- Method: InstructionStream>>interpretNextNSV4InstructionFor: (in category '*BytecodeSets-NewsqueakV4-decoding') -----
interpretNextNSV4InstructionFor: client
"Send to the argument, client, a message that specifies the next instruction."
| byte div16 offset method extA extB savedPC |
method := self method.
"For a table of the bytecode set, see EncoderForNewsqueakV2's class comment."
"consume and compute any extensions first."
extA := extB := 0.
savedPC := pc.
[byte := self method at: pc.
pc := pc + 1.
byte >= 224 and: [byte <= 225]] whileTrue:
[| extByte |
extByte := self method at: pc.
pc := pc + 1.
byte = 224
ifTrue:
[extA := (extA bitShift: 8) + extByte]
ifFalse:
[extB := (extB = 0 and: [extByte > 127])
ifTrue: [extByte - 256]
ifFalse: [(extB bitShift: 8) + extByte]]].
div16 := byte // 16.
offset := byte \\ 16.
"We do an inline quasi-binary search on each of the possible 16 values of div16"
div16 < 12 ifTrue:
[div16 < 4 ifTrue:
[div16 < 2 ifTrue:
[div16 = 0 ifTrue:
[^client pushReceiverVariable: offset].
^client pushLiteralVariable: (method literalAt: offset + 1)]. "div16 = 1"
^client pushConstant: (method literalAt: byte \\ 32 + 1)].
div16 = 4 ifTrue:
[offset < 12 ifTrue:
[^client pushTemporaryVariable: offset].
offset < 14 ifTrue:
[offset = 12 ifTrue:
[^client pushReceiver].
extB = 0 ifTrue:
[^client pushConstant: false].
+ ^self interpretNSV4ExtendedPush: extB for: client].
- ^self alternateInterpretExtendedPush: extB for: client].
^client pushConstant: offset - 14]. "0 & 1"
"short sends"
div16 < 7 ifTrue: "special selector sends"
[div16 = 5 ifTrue:
[^client
send: (Smalltalk specialSelectorAt: offset + 1)
super: false
numArgs: (Smalltalk specialNargsAt: offset + 1)].
^client
send: (Smalltalk specialSelectorAt: offset + 17)
super: false
numArgs: (Smalltalk specialNargsAt: offset + 17)].
div16 < 10 ifTrue: "vanilla sends, div16 = 7, 8 & 9"
[^client
send: (method literalAt: offset + 1)
super: false
numArgs: div16 - 7].
"implicit receiver send, div16 = 10"
div16 = 10 ifTrue:
[^client
sendToAbsentImplicitReceiver: (method literalAt: offset + 1)
numArgs: 0].
"short store pops"
offset < 8 ifTrue:
[^client popIntoReceiverVariable: offset].
^client popIntoTemporaryVariable: offset - 8].
"div16 >= 12"
div16 < 14 ifTrue:
[div16 = 12 ifTrue:
[offset < 8 ifTrue:
[^client jump: offset + 1].
^client jump: offset - 7 if: true].
offset < 8 ifTrue:
[^client jump: offset + 1 if: false].
offset < 11 ifTrue:
[offset = 8 ifTrue: [^client methodReturnReceiver].
offset = 9 ifTrue: [^client methodReturnTop].
extA > 0 ifTrue:
[^client blockReturnTopFromLevel: extA].
^client blockReturnTop].
offset = 11 ifTrue:
[^client doDup].
offset = 12 ifTrue:
[^client doPop].
offset = 13 ifTrue:
[^client doNop].
"222 11011110 break ? could have blockCopy: send break, but need a receiver and a pop result"
"223 11011111 UNASSIGNED"
^self unusedBytecode: client at: savedPC].
"2 byte and 3 byte codes"
byte < 249 ifTrue:
[^self interpretNext2ByteNSV4Instruction: byte for: client extA: extA extB: extB startPC: savedPC].
^self interpretNext3ByteNSV4Instruction: byte for: client extA: extA extB: extB startPC: savedPC!
Item was added:
+ ----- Method: InstructionStream>>pushExplicitOuter: (in category '*BytecodeSets-NewsqueakV4-decoding') -----
+ pushExplicitOuter: n "<Integer>"
+ self subclassResponsibility!
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