Vm-dev October 2016

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[OpenSmalltalk/opensmalltalk-vm] 5793c4: fixes typos and formatting for README.md
by GitHub 02 Oct '16

02 Oct '16

Branch: refs/heads/Cog Home: https://github.com/OpenSmalltalk/opensmalltalk-vm Commit: 5793c43726eed24cd6803ad5bd0ddab159adae2c https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/5793c43726eed24cd6… Author: Gerardo Santana <gerardo.santana(a)gmail.com> Date: 2016-10-02 (Sun, 02 Oct 2016) Changed paths: M README.md Log Message: ----------- fixes typos and formatting for README.md Commit: 4f8e4990aa790947e3a945532587eb76af870dd1 https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/4f8e4990aa790947e3… Author: Nicolas Cellier <nicolas.cellier.aka.nice(a)gmail.com> Date: 2016-10-02 (Sun, 02 Oct 2016) Changed paths: M README.md Log Message: ----------- Merge pull request #68 from santana/docfix fixes typos and formatting for README.md Compare: https://github.com/OpenSmalltalk/opensmalltalk-vm/compare/31e4f881ceea...4f…

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VM Maker: VMMaker.oscog-eem.1956.mcz
by commits＠source.squeak.org 02 Oct '16

02 Oct '16

Eliot Miranda uploaded a new version of VMMaker to project VM Maker: http://source.squeak.org/VMMaker/VMMaker.oscog-eem.1956.mcz ==================== Summary ==================== Name: VMMaker.oscog-eem.1956 Author: eem Time: 1 October 2016, 4:41:38.186285 pm UUID: b3575eed-1a33-4094-9847-124892efeac2 Ancestors: VMMaker.oscog-EstebanLorenzano.1955 Fix a bogus assert fail in checkIsStillMarriedContext:currentFP: In the Cogit, eliminate stale dependent values in the instructions used for generating trampolines as part of each zeroOpcodeIndex. Split out the basic zeroing into zeroOpcodeIndexForNewOpcodes. Get non-Lowcode cogitFOO.c files to compile by marking the relevant routines as <option: #LowcodeVM> Fix some asserts by typing inlineCacheValueForSelector:in:at:. Although this looks like a regression in the inliner; inlineCacheValueForSelector:in:at: should be completely inlined but isn't. Was it ever? In 1956 the hard disk drive is invented by an IBM team led by Reynold B. Johnson, the submarine transatlantic telephone cable opens, and the Suez Crisis occurs. =============== Diff against VMMaker.oscog-EstebanLorenzano.1955 =============== Item was changed: ----- Method: CogAbstractInstruction>>genWriteCSecondResultIntoReg: (in category 'abi') ----- genWriteCSecondResultIntoReg: abstractRegister + <option: #LowcodeVM> | cResultReg | cResultReg := self cResultRegisterHigh. abstractRegister ~= cResultReg ifTrue: [cogit gen: MoveRR operand: cResultReg operand: abstractRegister]! Item was changed: ----- Method: CogObjectRepresentation>>generateLowcodeObjectTrampolines (in category 'initialization') ----- generateLowcodeObjectTrampolines + <option: #LowcodeVM> ceFloatObjectOfTrampoline := cogit genTrampolineFor: #floatObjectOf: called: 'ceFloatObjectOfTrampoline' floatArg: DPFPReg0 result: TempReg. ceFloatValueOfTrampoline := cogit genTrampolineFor: #floatValueOf: called: 'ceFloatValueOfTrampoline' arg: ReceiverResultReg floatResult: DPFPReg0. ceInstantiateClassIndexableSizeTrampoline := cogit genTrampolineFor: #instantiateClass:indexableSize: called: 'ceInstantiateClassIndexableSizeTrampoline' arg: ReceiverResultReg arg: Arg0Reg result: TempReg. ceInstantiateClassTrampoline := cogit genTrampolineFor: #instantiateClass:indexableSize: called: 'ceInstantiateClassTrampoline' arg: ReceiverResultReg arg: 0 result: TempReg. ceByteSizeOfTrampoline := cogit genTrampolineFor: #byteSizeOf: called: 'ceByteSizeOfTrampoline' arg: ReceiverResultReg arg: Arg0Reg result: TempReg. BytesPerOop = 4 ifTrue: [ cePositive64BitIntegerTrampoline := cogit genTrampolineFor: #positive64BitIntegerFor: called: 'cePositive64BitIntegerTrampoline' arg: ReceiverResultReg arg: Arg0Reg result: TempReg. cePositive64BitValueOfTrampoline := cogit genTrampolineFor: #positive64BitValueOf: called: 'cePositive64BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg result: Arg0Reg. ceSigned64BitIntegerTrampoline := cogit genTrampolineFor: #signed64BitIntegerFor: called: 'ceSigned64BitIntegerTrampoline' arg: ReceiverResultReg arg: Arg0Reg result: TempReg. ceSigned64BitValueOfTrampoline := cogit genTrampolineFor: #signed64BitValueOf: called: 'ceSigned64BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg result: Arg0Reg. ] ifFalse: [ cePositive64BitIntegerTrampoline := cogit genTrampolineFor: #positive64BitIntegerFor: called: 'cePositive64BitIntegerTrampoline' arg: ReceiverResultReg result: TempReg. cePositive64BitValueOfTrampoline := cogit genTrampolineFor: #positive64BitValueOf: called: 'cePositive64BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg. ceSigned64BitIntegerTrampoline := cogit genTrampolineFor: #signed64BitIntegerFor: called: 'ceSigned64BitIntegerTrampoline' arg: ReceiverResultReg result: TempReg. ceSigned64BitValueOfTrampoline := cogit genTrampolineFor: #signed64BitValueOf: called: 'ceSigned64BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg. ]! Item was changed: ----- Method: CogObjectRepresentationFor32BitSpur>>generateLowcodeObjectTrampolines (in category 'initialization') ----- generateLowcodeObjectTrampolines + <option: #LowcodeVM> super generateLowcodeObjectTrampolines. cePositive32BitIntegerTrampoline := cogit genTrampolineFor: #positive32BitIntegerFor: called: 'cePositive32BitIntegerTrampoline' arg: ReceiverResultReg result: TempReg. cePositive32BitValueOfTrampoline := cogit genTrampolineFor: #positive32BitValueOf: called: 'cePositive32BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg. ceSigned32BitIntegerTrampoline := cogit genTrampolineFor: #signed32BitIntegerFor: called: 'ceSigned32BitIntegerTrampoline' arg: ReceiverResultReg result: TempReg. ceSigned32BitValueOfTrampoline := cogit genTrampolineFor: #signed32BitValueOf: called: 'ceSigned32BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg.! Item was changed: ----- Method: CogObjectRepresentationForSqueakV3>>generateObjectRepresentationTrampolines (in category 'initialization') ----- generateObjectRepresentationTrampolines "Do the store check. Answer the argument for the benefit of the code generator; ReceiverResultReg may be caller-saved and hence smashed by this call. Answering it allows the code generator to reload ReceiverResultReg cheaply." + <option: #LowcodeVM> ceStoreCheckTrampoline := cogit genTrampolineFor: #ceStoreCheck: called: 'ceStoreCheckTrampoline' arg: ReceiverResultReg regsToSave: (CallerSavedRegisterMask bitClear: (cogit registerMaskFor: ReceiverResultReg)) result: cogit returnRegForStoreCheck. ceCreateNewArrayTrampoline := cogit genTrampolineFor: #ceNewArraySlotSize: called: 'ceCreateNewArrayTrampoline' arg: SendNumArgsReg regsToSave: (CallerSavedRegisterMask bitClear: (cogit registerMaskFor: ReceiverResultReg)) result: ReceiverResultReg. cePositive32BitIntegerTrampoline := cogit genTrampolineFor: #positive32BitIntegerFor: called: 'cePositive32BitIntegerTrampoline' arg: ReceiverResultReg regsToSave: (CallerSavedRegisterMask bitClear: (cogit registerMaskFor: ReceiverResultReg)) result: TempReg. ceActiveContextTrampoline := self genActiveContextTrampoline. ceClosureCopyTrampoline := cogit genTrampolineFor: #ceClosureCopyDescriptor: called: 'ceClosureCopyTrampoline' arg: SendNumArgsReg regsToSave: (CallerSavedRegisterMask bitClear: (cogit registerMaskFor: ReceiverResultReg)) result: ReceiverResultReg. + LowcodeVM ifTrue: + [cePositive32BitValueOfTrampoline := cogit genTrampolineFor: #positive32BitValueOf: - LowcodeVM ifTrue: [ - cePositive32BitValueOfTrampoline := cogit genTrampolineFor: #positive32BitValueOf: called: 'cePositive32BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg. ceSigned32BitIntegerTrampoline := cogit genTrampolineFor: #signed32BitIntegerFor: called: 'ceSigned32BitIntegerTrampoline' arg: ReceiverResultReg result: TempReg. ceSigned32BitValueOfTrampoline := cogit genTrampolineFor: #signed32BitValueOf: called: 'ceSigned32BitValueOfTrampoline' arg: ReceiverResultReg result: TempReg. + self generateLowcodeObjectTrampolines]! - self generateLowcodeObjectTrampolines - ]! Item was changed: ----- Method: CogRTLOpcodes class>>initialize (in category 'class initialization') ----- initialize "Abstract opcodes are a compound of a one word operation specifier and zero or more operand type specifiers. The assembler is in Cogit protocol abstract instructions and uses `at&t' syntax, assigning to the register on the right. e.g. MoveRR is the Move opcode with two register operand specifiers and defines a move register to register instruction from operand 0 to operand 1. The word and register size is assumed to be either 32-bits on a 32-bit architecture or 64-bits on a 64-bit architecture. The abstract machine is mostly a 2 address machine with the odd three address instruction added to better exploit RISCs. (self initialize) The operand specifiers are R - general purpose register Rs - single-precision floating-point register Rd - double-precision floating-point register Cq - a `quick' constant that can be encoded in the minimum space possible. Cw - a constant with word size where word is the default operand size for the Smalltalk VM, 32-bits for a 32-bit VM, 64-bits for a 64-bit VM. The generated constant must occupy the default number of bits. This allows e.g. a garbage collector to update the value without invalidating the code. C32 - a constant with 32 bit size. The generated constant must occupy 32 bits. C64 - a constant with 64 bit size. The generated constant must occupy 64 bits. Aw - memory word (32-bits for a 32-bit VM, 64-bits for a 64-bit VM) at an absolute address Ab - memory byte at an absolute address A32 - memory 32-bit halfword at an absolute address Mwr - memory word whose address is at a constant offset from an address in a register Mbr - memory byte whose address is at a constant offset from an address in a register (zero-extended on read) M16r - memory 16-bit halfword whose address is at a constant offset from an address in a register M32r - memory 32-bit halfword whose address is at a constant offset from an address in a register M64r - memory 64-bit doubleword whose address is at a constant offset from an address in a register Xbr - memory byte whose address is r * byte size away from an address in a register X16r - memory 16-bit halfword whose address is r * (2 bytes size) away from an address in a register X32r - memory 32-bit halfword whose address is r * (4 bytes size) away from an address in a register Xwr - memory word whose address is r * word size away from an address in a register Xowr - memory word whose address is o + (r * word size) away from an address in a register (scaled indexed) An alternative would be to decouple opcodes from operands, e.g. Move := 1. Add := 2. Sub := 3... RegisterOperand := 1. ConstantQuickOperand := 2. ConstantWordOperand := 3... But not all combinations make sense and even fewer are used so we stick with the simple compound approach. The assumption is that comparison and arithmetic instructions set condition codes and that move instructions leave the condition codes unaffected. In particular LoadEffectiveAddressMwrR does not set condition codes although it can be used to do arithmetic. On processors such as MIPS this distinction is invalid; there are no condition codes. So the backend is allowed to collapse operation, branch pairs to internal instruciton definitions (see sender and implementors of noteFollowingConditionalBranch:). Not all of the definitions in opcodeDefinitions below are implemented. In particular we do not implement the XowrR scaled index addressing mode since it requires 4 operands. Not all instructions make sense on all architectures. MoveRRd and MoveRdR aqre meaningful only on 64-bit machines. Note that there are no generic division instructions defined, but a processor may define some. Branch/Call ranges. Jump[Cond] can be generated as short as possible. Call/Jump[Cond]Long must be generated in the same number of bytes irrespective of displacement since their targets may be updated, but they need only span 16Mb, the maximum size of the code zone. This allows e.g. ARM to use single-word call and jump instructions for most calls and jumps. CallFull/JumpFull must also be generated in the same number of bytes irrespective of displacement for the same reason, but they must be able to span the full (32-bit or 64-bit) address space because they are used to call code in the C runtime, which may be distant from the code zone. CallFull/JumpFull are allowed to use the cResultRegister as a scratch if required (e.g. on x64 where there is no direct 64-bit call or jump). Byte reads. If the concrete compiler class answers true to byteReadsZeroExtend then byte reads must zero-extend the byte read into the destination register. If not, the other bits of the register should be left undisturbed and the Cogit will add an instruction to zero the register as required. Under no circumstances should byte reads sign-extend. 16-bit (and on 64-bits, 32-bit) reads. These /are/ expected to always zero-extend." | opcodeNames refs | opcodeNames := #("Noops & Pseudo Ops" Label Literal "a word-sized literal" AlignmentNops Fill32 "output four byte's worth of bytes with operand 0" Nop "Control" Call "call within the code zone" CallFull "call anywhere within the full address space" CallR RetN JumpR "Not a regular jump, i.e. not pc dependent." Stop "Halt the processor" + "N.B. Jumps are contiguous. Long and Full jumps are contiguous within them. See FirstJump et al below" - "N.B. Jumps are contiguous. Long and Full jumps are contigiuous within them. See FirstJump et al below" JumpFull "Jump anywhere within the address space" JumpLong "Jump anywhere within the 16mb code zone." JumpLongZero "a.k.a. JumpLongEqual" JumpLongNonZero "a.k.a. JumpLongNotEqual" Jump "short jumps; can be encoded in as few bytes as possible; will not be disturbed by GC or relocation." JumpZero "a.k.a. JumpEqual" JumpNonZero "a.k.a. JumpNotEqual" JumpNegative JumpNonNegative JumpOverflow JumpNoOverflow JumpCarry JumpNoCarry JumpLess "signed" JumpGreaterOrEqual JumpGreater JumpLessOrEqual JumpBelow "unsigned" JumpAboveOrEqual JumpAbove JumpBelowOrEqual JumpFPEqual JumpFPNotEqual JumpFPLess JumpFPLessOrEqual JumpFPGreater JumpFPGreaterOrEqual JumpFPOrdered JumpFPUnordered "Data Movement; destination is always last operand" MoveRR MoveAwR MoveA32R MoveRAw MoveRA32 MoveAbR MoveRAb MoveMwrR MoveRMwr MoveXwrRR MoveRXwrR MoveXowrR MoveRXowr MoveM8rR MoveMs8rR MoveRM8r MoveM16rR MoveRM16r MoveX16rRR MoveRX16rR MoveM32rR MoveRM32r MoveX32rRR MoveRX32rR MoveMbrR MoveRMbr MoveXbrRR MoveRXbrR MoveCqR MoveCwR MoveC32R MoveC64R MoveRRd MoveRdR MoveRdRd MoveM64rRd MoveRdM64r MoveRsRs MoveM32rRs MoveRsM32r PopR PushR PushCq PushCw PrefetchAw "Arithmetic; destination is always last operand except Cmp; CmpXR is SubRX with no update of result" LoadEffectiveAddressMwrR LoadEffectiveAddressXowrR "Variants of add/multiply" NegateR "2's complement negation" NotR ArithmeticShiftRightCqR ArithmeticShiftRightRR LogicalShiftRightCqR LogicalShiftRightRR LogicalShiftLeftCqR LogicalShiftLeftRR RotateLeftCqR RotateRightCqR CmpRR AddRR SubRR AndRR OrRR XorRR CmpCqR AddCqR SubCqR AndCqR OrCqR TstCqR XorCqR CmpCwR CmpC32R AddCwR SubCwR AndCwR OrCwR XorCwR AddcRR AddcCqR SubbRR AndCqRR "Three address ops for RISCs; feel free to add and extend" CmpRdRd AddRdRd SubRdRd MulRdRd DivRdRd SqrtRd XorRdRd CmpRsRs AddRsRs SubRsRs MulRsRs DivRsRs SqrtRs XorRsRs "Conversion" ConvertRRd ConvertRdR ConvertRsRd ConvertRdRs ConvertRsR ConvertRRs SignExtend8RR SignExtend16RR ZeroExtend8RR ZeroExtend16RR LastRTLCode). "Magic auto declaration. Add to the classPool any new variables and nuke any obsolete ones, and assign values" "Find the variables directly referenced by this method" refs := (thisContext method literals select: [:l| l isVariableBinding and: [classPool includesKey: l key]]) collect: [:ea| ea key]. "Move to Undeclared any opcodes in classPool not in opcodes or this method." (classPool keys reject: [:k| (opcodeNames includes: k) or: [refs includes: k]]) do: [:k| Undeclared declare: k from: classPool]. "Declare as class variables and number elements of opcodeArray above" opcodeNames withIndexDo: [:classVarName :value| self classPool declare: classVarName from: Undeclared; at: classVarName put: value]. "For CogAbstractInstruction>>isJump etc..." FirstJump := JumpFull. LastJump := JumpFPUnordered. FirstShortJump := Jump. "And now initialize the backends; they add their own opcodes and hence these must be reinitialized." (Smalltalk classNamed: #CogAbstractInstruction) ifNotNil: [:cogAbstractInstruction| cogAbstractInstruction allSubclasses do: [:sc| sc initialize]]! Item was changed: ----- Method: Cogit class>>declareCVarsIn: (in category 'translation') ----- declareCVarsIn: aCCodeGenerator #( 'coInterpreter' 'objectMemory' 'methodZone' 'objectRepresentation' 'cogBlockMethodSurrogateClass' 'cogMethodSurrogateClass' 'nsSendCacheSurrogateClass' 'threadManager' 'processor' 'lastNInstructions' 'simulatedAddresses' 'simulatedTrampolines' 'simulatedVariableGetters' 'simulatedVariableSetters' 'printRegisters' 'printInstructions' 'clickConfirm' 'singleStep') do: [:simulationVariableNotNeededForRealVM| aCCodeGenerator removeVariable: simulationVariableNotNeededForRealVM]. NewspeakVM ifFalse: [#( 'selfSendTrampolines' 'dynamicSuperSendTrampolines' 'implicitReceiverSendTrampolines' 'outerSendTrampolines' 'ceEnclosingObjectTrampoline' 'numIRCs' 'indexOfIRC' 'theIRCs') do: [:variableNotNeededInNormalVM| aCCodeGenerator removeVariable: variableNotNeededInNormalVM]]. aCCodeGenerator removeConstant: #COGMTVM. "this should be defined at compile time" aCCodeGenerator addHeaderFile:'<stddef.h>'; "for e.g. offsetof" addHeaderFile:'"sqCogStackAlignment.h"'; addHeaderFile:'"dispdbg.h"'; "must precede cointerp.h & cogit.h otherwise NoDbgRegParms gets screwed up" addHeaderFile:'"cogmethod.h"'. NewspeakVM ifTrue: [aCCodeGenerator addHeaderFile:'"nssendcache.h"']. aCCodeGenerator addHeaderFile:'#if COGMTVM'; addHeaderFile:'"cointerpmt.h"'; addHeaderFile:'#else'; addHeaderFile:'"cointerp.h"'; addHeaderFile:'#endif'; addHeaderFile:'"cogit.h"'. aCCodeGenerator var: #ceGetFP declareC: 'unsigned long (*ceGetFP)(void)'; var: #ceGetSP declareC: 'unsigned long (*ceGetSP)(void)'; var: #ceCaptureCStackPointers declareC: 'void (*ceCaptureCStackPointers)(void)'; var: #ceEnterCogCodePopReceiverReg declareC: 'void (*ceEnterCogCodePopReceiverReg)(void)'; var: #realCEEnterCogCodePopReceiverReg declareC: 'void (*realCEEnterCogCodePopReceiverReg)(void)'; var: #ceCallCogCodePopReceiverReg declareC: 'void (*ceCallCogCodePopReceiverReg)(void)'; var: #realCECallCogCodePopReceiverReg declareC: 'void (*realCECallCogCodePopReceiverReg)(void)'; var: #ceCallCogCodePopReceiverAndClassRegs declareC: 'void (*ceCallCogCodePopReceiverAndClassRegs)(void)'; var: #realCECallCogCodePopReceiverAndClassRegs declareC: 'void (*realCECallCogCodePopReceiverAndClassRegs)(void)'; var: #ceFlushICache declareC: 'static void (*ceFlushICache)(unsigned long from, unsigned long to)'; var: #ceCheckFeaturesFunction declareC: 'static unsigned long (*ceCheckFeaturesFunction)(void)'; var: #ceTryLockVMOwner declareC: 'unsigned long (*ceTryLockVMOwner)(void)'; var: #ceUnlockVMOwner declareC: 'void (*ceUnlockVMOwner)(void)'; var: #postCompileHook declareC: 'void (*postCompileHook)(CogMethod *)'; var: #openPICList declareC: 'CogMethod *openPICList = 0'; + var: #maxMethodBefore type: #'CogBlockMethod *'; + var: 'enumeratingCogMethod' type: #'CogMethod *'. - var: #maxMethodBefore type: #'CogBlockMethod *'. - self objectMemoryClass wordSize = 8 ifTrue: - [aCCodeGenerator var: 'enumeratingCogMethod' type: #'CogMethod *']. aCCodeGenerator declareVar: 'aMethodLabel' type: #'AbstractInstruction'; "Has to come lexicographically before backEnd & methodLabel" var: #backEnd declareC: 'AbstractInstruction * const backEnd = &aMethodLabel'; var: #methodLabel declareC: 'AbstractInstruction * const methodLabel = &aMethodLabel'. self declareC: #(abstractOpcodes stackCheckLabel blockEntryLabel blockEntryNoContextSwitch stackOverflowCall sendMiss entry noCheckEntry selfSendEntry dynSuperEntry fullBlockNoContextSwitchEntry fullBlockEntry picMNUAbort picInterpretAbort endCPICCase0 endCPICCase1 cPICEndOfCodeLabel) as: #'AbstractInstruction *' in: aCCodeGenerator. aCCodeGenerator declareVar: #blockStarts type: #'BlockStart *'; declareVar: #fixups type: #'BytecodeFixup *'. aCCodeGenerator var: #ordinarySendTrampolines declareC: 'sqInt ordinarySendTrampolines[NumSendTrampolines]'; var: #superSendTrampolines declareC: 'sqInt superSendTrampolines[NumSendTrampolines]'; var: #directedSuperSendTrampolines declareC: 'sqInt directedSuperSendTrampolines[NumSendTrampolines]'; var: #selfSendTrampolines declareC: 'sqInt selfSendTrampolines[NumSendTrampolines]'; var: #dynamicSuperSendTrampolines declareC: 'sqInt dynamicSuperSendTrampolines[NumSendTrampolines]'; var: #implicitReceiverSendTrampolines declareC: 'sqInt implicitReceiverSendTrampolines[NumSendTrampolines]'; var: #outerSendTrampolines declareC: 'sqInt outerSendTrampolines[NumSendTrampolines]'; var: #trampolineAddresses declareC: 'static char *trampolineAddresses[NumTrampolines*2]'; var: #objectReferencesInRuntime declareC: 'static usqInt objectReferencesInRuntime[NumObjRefsInRuntime]'; var: #labelCounter type: #int; var: #traceFlags declareC: 'int traceFlags = 8 /* prim trace log on by default */'; var: #cStackAlignment declareC: 'const int cStackAlignment = STACK_ALIGN_BYTES'. aCCodeGenerator declareVar: #CFramePointer type: #'void *'; declareVar: #CStackPointer type: #'void *'; declareVar: #minValidCallAddress type: #'unsigned long'; declareVar: #debugPrimCallStackOffset type: #'unsigned long'. aCCodeGenerator vmClass generatorTable ifNotNil: [:bytecodeGenTable| aCCodeGenerator var: #generatorTable declareC: 'static BytecodeDescriptor generatorTable[', bytecodeGenTable size, ']', (self tableInitializerFor: bytecodeGenTable in: aCCodeGenerator)]. "In C the abstract opcode names clash with the Smalltak generator syntactic sugar. Most of the syntactic sugar is inlined, but alas some remains. Rename the syntactic sugar to avoid the clash." (self organization listAtCategoryNamed: #'abstract instructions') do: [:s| aCCodeGenerator addSelectorTranslation: s to: 'g', (aCCodeGenerator cFunctionNameFor: s)]. aCCodeGenerator addSelectorTranslation: #halt: to: 'haltmsg'! Item was changed: ----- Method: Cogit>>allocateOpcodes:bytecodes: (in category 'initialization') ----- allocateOpcodes: numberOfAbstractOpcodes bytecodes: numberOfBytecodes "Allocate the various arrays needed to compile abstract instructions. Notionally we only need as many fixups as there are bytecodes. But we reuse fixups to record pc-dependent instructions in generateInstructionsAt: and so need at least as many as there are abstract opcodes. This *must* be inlined since the arrays are alloca'ed (stack allocated) so that they are freed when compilation is done. N.B. We do one single alloca to save embarrassing C optimizers that generate incorrect code as both gcc and the intel compiler do on x86." <inline: true> numAbstractOpcodes := numberOfAbstractOpcodes. self cCode: [| opcodeSize fixupSize| opcodeSize := (self sizeof: CogAbstractInstruction) * numAbstractOpcodes. fixupSize := (self sizeof: CogBytecodeFixup) * numAbstractOpcodes. abstractOpcodes := self alloca: opcodeSize + fixupSize. self b: abstractOpcodes zero: opcodeSize + fixupSize. fixups := (abstractOpcodes asUnsignedInteger + opcodeSize) asVoidPointer] inSmalltalk: [abstractOpcodes := CArrayAccessor on: ((1 to: numAbstractOpcodes) collect: [:ign| CogCompilerClass for: self]). fixups := CArrayAccessor on: ((1 to: numAbstractOpcodes) collect: [:ign| self bytecodeFixupClass for: self])]. + self zeroOpcodeIndexForNewOpcodes. - self zeroOpcodeIndex. labelCounter := 0! Item was changed: ----- Method: Cogit>>allocateOpcodes:bytecodes:ifFail: (in category 'initialization') ----- allocateOpcodes: numberOfAbstractOpcodes bytecodes: numberOfBytecodes ifFail: failBlock "Allocate the various arrays needed to compile abstract instructions, failing if the size needed is considered too high. Notionally we only need as many fixups as there are bytecodes. But we reuse fixups to record pc-dependent instructions in generateInstructionsAt: and so need at least as many as there are abstract opcodes. This *must* be inlined since the arrays are alloca'ed (stack allocated) so that they are freed when compilation is done. N.B. We do one single alloca to save embarrassing C optimizers that generate incorrect code as both gcc and the intel compiler do on x86." <inline: true> | opcodeBytes fixupBytes allocBytes | numAbstractOpcodes := numberOfAbstractOpcodes. opcodeBytes := (self sizeof: CogAbstractInstruction) * numAbstractOpcodes. fixupBytes := (self sizeof: CogBytecodeFixup) * numAbstractOpcodes. allocBytes := opcodeBytes + fixupBytes. allocBytes > MaxStackAllocSize ifTrue: [^failBlock value]. self cCode: [abstractOpcodes := self alloca: allocBytes. self b: abstractOpcodes zero: allocBytes. fixups := (abstractOpcodes asUnsignedInteger + opcodeBytes) asVoidPointer] inSmalltalk: [abstractOpcodes := CArrayAccessor on: ((1 to: numAbstractOpcodes) collect: [:ign| CogCompilerClass for: self]). fixups := CArrayAccessor on: ((1 to: numAbstractOpcodes) collect: [:ign| self bytecodeFixupClass for: self])]. + self zeroOpcodeIndexForNewOpcodes. - self zeroOpcodeIndex. labelCounter := 0! Item was changed: ----- Method: Cogit>>compileCallFor:numArgs:floatArg:floatArg:floatArg:floatArg:resultReg:regsToSave: (in category 'initialization') ----- compileCallFor: aRoutine numArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3 resultReg: resultRegOrNone regsToSave: regMask "Generate a call to aRoutine with up to 4 arguments. If resultRegOrNone is not NoReg assign the C result to resultRegOrNone. If saveRegs, save all registers. Hack: a negative arg value indicates an abstract register, a non-negative value indicates a constant." + <option: #LowcodeVM> <var: #aRoutine type: #'void *'> <inline: false> | regsToSave | regsToSave := resultRegOrNone = NoReg ifTrue: [regMask] ifFalse: [regMask bitClear: (self registerMaskFor: resultRegOrNone)]. cStackAlignment > objectMemory wordSize ifTrue: [backEnd genAlignCStackSavingRegisters: regsToSave numArgs: numArgs wordAlignment: cStackAlignment / objectMemory wordSize]. backEnd genSaveRegs: regsToSave; genMarshallNArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3. self CallFullRT: (self cCode: [aRoutine asUnsignedInteger] inSmalltalk: [self simulatedTrampolineFor: aRoutine]). resultRegOrNone ~= NoReg ifTrue: [backEnd genWriteCResultIntoReg: resultRegOrNone]. numArgs > 0 ifTrue: [backEnd genRemoveNFloatArgsFromStack: numArgs]. backEnd genRestoreRegs: regsToSave! Item was changed: ----- Method: Cogit>>compileTrampolineFor:numArgs:floatArg:floatArg:floatArg:floatArg:regsToSave:pushLinkReg:resultReg: (in category 'initialization') ----- compileTrampolineFor: aRoutine numArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3 regsToSave: regMask pushLinkReg: pushLinkReg resultReg: resultRegOrNone "Generate a trampoline with up to four arguments. Generate either a call or a jump to aRoutine as requested by callJumpBar. If generating a call and resultRegOrNone is not NoReg pass the C result back in resultRegOrNone. Hack: a negative value indicates an abstract register, a non-negative value indicates a constant." + <option: #LowcodeVM> <var: #aRoutine type: #'void *'> <inline: false> self genSmalltalkToCStackSwitch: pushLinkReg. self compileCallFor: aRoutine numArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3 resultReg: resultRegOrNone regsToSave: regMask. backEnd genLoadStackPointers. (pushLinkReg and: [backEnd hasLinkRegister]) ifTrue: [backEnd hasPCRegister ifTrue: [self PopR: PCReg] ifFalse: [self PopR: LinkReg. self RetN: 0]] ifFalse: [self RetN: 0]! Item was changed: ----- Method: Cogit>>genTrampolineFor:called:arg:result:result: (in category 'initialization') ----- genTrampolineFor: aRoutine called: aString arg: regOrConst0 result: resultReg result: resultReg2 "Generate a trampoline with one argument that answers a result. Hack: a negative value indicates an abstract register, a non-negative value indicates a constant." + <option: #LowcodeVM> <var: #aRoutine type: #'void *'> <var: #aString type: #'char *'> ^self genTrampolineFor: aRoutine called: aString numArgs: 1 arg: regOrConst0 arg: nil arg: nil arg: nil regsToSave: self emptyRegisterMask pushLinkReg: true resultReg: resultReg resultReg: resultReg2 appendOpcodes: false! Item was changed: ----- Method: Cogit>>genTrampolineFor:called:numArgs:floatArg:floatArg:floatArg:floatArg:regsToSave:pushLinkReg:resultReg:appendOpcodes: (in category 'initialization') ----- genTrampolineFor: aRoutine called: trampolineName numArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3 regsToSave: regMask pushLinkReg: pushLinkReg resultReg: resultRegOrNone appendOpcodes: appendBoolean "Generate a trampoline with up to four arguments. Generate either a call or a jump to aRoutineOrNil as requested by callJumpBar. If generating a call and resultRegOrNone is not NoReg pass the C result back in resultRegOrNone. Hack: a negative value indicates an abstract register, a non-negative value indicates a constant." + <option: #LowcodeVM> <var: #aRoutine type: #'void *'> <var: #trampolineName type: #'char *'> | startAddress | <inline: false> startAddress := methodZoneBase. appendBoolean ifFalse: [self zeroOpcodeIndex]. self compileTrampolineFor: aRoutine numArgs: numArgs floatArg: regOrConst0 floatArg: regOrConst1 floatArg: regOrConst2 floatArg: regOrConst3 regsToSave: regMask pushLinkReg: pushLinkReg resultReg: resultRegOrNone. self outputInstructionsForGeneratedRuntimeAt: startAddress. self recordGeneratedRunTime: trampolineName address: startAddress. self recordRunTimeObjectReferences. ^startAddress! Item was changed: ----- Method: Cogit>>inlineCacheValueForSelector:in:at: (in category 'in-line cacheing') ----- inlineCacheValueForSelector: selector in: aCogMethod at: mcpc "Answer the value to put in an inline-cache that is being loaded with the selector. Usually this is simply the selector, but in 64-bits the cache is only 32-bits wide and so the cache is loaded with the index of the selector." + <var: #aCogMethod type: #'CogMethod *'> <inline: true> ^self inlineCacheTagsAreIndexes ifTrue: [self indexForSelector: selector in: aCogMethod at: mcpc] ifFalse: [selector]! Item was changed: ----- Method: Cogit>>zeroOpcodeIndex (in category 'accessing') ----- zeroOpcodeIndex "Access for the object representations when they need to prepend code to trampolines." + "Eliminate stale dependent info." + 0 to: opcodeIndex - 1 do: + [:i| (abstractOpcodes at: i) dependent: nil]. + self zeroOpcodeIndexForNewOpcodes! - opcodeIndex := 0. - literalsManager resetLiterals! Item was added: + ----- Method: Cogit>>zeroOpcodeIndexForNewOpcodes (in category 'accessing') ----- + zeroOpcodeIndexForNewOpcodes + "Access for the object representations when they need to prepend code to trampolines." + opcodeIndex := 0. + literalsManager resetLiterals! Item was changed: ----- Method: StackInterpreter>>checkIsStillMarriedContext:currentFP: (in category 'frame access') ----- checkIsStillMarriedContext: aContext currentFP: currentFP "Another version of isWidowedContext: for debugging. This will not bereave a widowed context." | thePage maybeFP limitFP maybeFrameCtxt | <inline: false> <var: #currentFP type: #'char *'> <var: #thePage type: #'StackPage *'> <var: #maybeFP type: #'char *'> <var: #limitFP type: #'char *'> ((objectMemory isContext: aContext) and: [self isMarriedOrWidowedContext: aContext]) ifFalse: [^false]. maybeFP := self frameOfMarriedContext: aContext. thePage := stackPages stackPageFor: maybeFP. limitFP := (thePage = stackPage and: [currentFP notNil]) ifTrue: [currentFP] ifFalse: [thePage headFP]. (maybeFP >= limitFP and: [(objectMemory isNonImmediate: (self frameCallerFP: maybeFP) asInteger) and: [(self withSmallIntegerTags: (self frameCallerFP: maybeFP)) = (objectMemory fetchPointer: InstructionPointerIndex ofObject: aContext) and: [self frameHasContext: maybeFP]]]) ifFalse: [^false]. maybeFrameCtxt := self frameContext: maybeFP. "On Spur we need to follow the context to check for a match, but since the VM is only speculating about maybeFrame being a frame, and only speculating about maybeContext being a context, we need to be sure before we can safely follow." (objectMemory hasSpurMemoryManagerAPI + and: [(stackPages isFree: thePage) not and: [(self isFrame: maybeFP onPage: thePage) + and: [objectMemory isForwarded: maybeFrameCtxt]]]) ifTrue: - and: [objectMemory isForwarded: maybeFrameCtxt]]) ifTrue: [maybeFrameCtxt := objectMemory followForwarded: maybeFrameCtxt]. ^maybeFrameCtxt = aContext!

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Vm-dev October 2016