[Vm-dev] VM Maker: VMMaker.oscog-eem.1956.mcz
commits at source.squeak.org
commits at source.squeak.org
Sat Oct 1 23:43:28 UTC 2016
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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