"
COPYRIGHT (c) 1989 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
Parser subclass:#ByteCodeCompiler
instanceVariableNames:'codeBytes codeIndex litArray stackDelta extra lineno extraLiteral
maxStackDepth relocList methodTempVars numTemp maxNumTemp'
classVariableNames:'JumpToAbsJump SequenceNumber STCCompilationDefines
STCCompilationIncludes STCCompilationOptions STCCompilation
ShareCode STCKeepSTIntermediate STCKeepCIntermediate
STCModulePath CCCompilationOptions CC ListCompiledMethods'
poolDictionaries:''
category:'System-Compiler'
!
!ByteCodeCompiler class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 1989 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
!
documentation
"
This class performs compilation into ByteCodes.
First, parsing is done using superclass methods,
then the parse-tree is converted into an array of symbolic codes
and a relocation table;
these two are finally combined into a byteArray of the codes.
(the intermediate step through symbolic codes is for debugging
only - it may vanish in future releases)
There are many dependencies to the run-time-system (especially the
interpreter) in here - be careful when playing around ...
[Instance variables:]
codeBytes <ByteArry> bytecodes
codeIndex <SmallInteger> next index to put into code array
litArray <OrderedCollection> literals
stackDelta <SmallInteger> return value of byteCodeFor:
extra <Symbol> return value of byteCodeFor:
lineno <Boolean> return value of byteCodeFor:
extraLiteral <Symbol> return value of byteCodeFor:
maxStackDepth <SmallInteger> stack need of method
relocList <Array> used temporary for relocation
[Class variables:]
JumpToAbsJump <Dictionary> internal table to map opcodes
SequenceNumber <Integer> counting intermediate stc-compiled
objects (for unique o-file naming)
STCCompilationDefines passed to stc as command line arguments
STCCompilationIncludes
STCCompilationOptions
<String>
STCCompilation <Symbol> #always, #primitiveOnly or #never
controls when stc compilation is wanted
ShareCode <Boolean> reuse byteArrays for common (simple) code sequences
This is normally a 'good' optimization,
expect if you plan to modify the byteCodes.
[author:]
Claus Gittinger
"
! !
!ByteCodeCompiler class methodsFor:'initialization'!
initialize
ShareCode := true.
STCKeepCIntermediate := false.
STCKeepSTIntermediate := false.
STCModulePath := './modules'.
ListCompiledMethods := false.
"Modified: 31.8.1997 / 08:47:49 / cg"
! !
!ByteCodeCompiler class methodsFor:'compiling methods'!
compile:methodText forClass:classToCompileFor
"compile a source-string for a method in classToCompileFor"
^ self compile:methodText
forClass:classToCompileFor
inCategory:'others'
notifying:nil
install:true
skipIfSame:false
silent:false
!
compile:aString forClass:aClass inCategory:cat
"compile a source-string for a method in classToCompileFor.
The method will get cat as category"
^ self compile:aString
forClass:aClass
inCategory:cat
notifying:nil
install:true
skipIfSame:false
silent:false
!
compile:aString forClass:aClass inCategory:cat notifying:requestor
"compile a source-string for a method in classToCompileFor.
errors are forwarded to requestor.
The method will get cat as category"
^ self compile:aString
forClass:aClass
inCategory:cat
notifying:requestor
install:true
skipIfSame:false
silent:false
!
compile:aString forClass:aClass inCategory:cat notifying:requestor install:install
"compile a source-string for a method in classToCompileFor.
The install-argument controls if the method is to be installed into the
classes method-dictionary, or just to be compiled and a method object to be returned.
Errors are forwarded to requestor. The method will get cat as category"
^ self compile:aString
forClass:aClass
inCategory:cat
notifying:requestor
install:install
skipIfSame:false
silent:false
!
compile:aString forClass:aClass inCategory:cat notifying:requestor
install:install skipIfSame:skipIfSame
"compile a source-string for a method in classToCompileFor.
The install-argument controls if the method is to be installed into the
classes method-dictionary, or just to be compiled and a method object to be returned.
Errors are forwarded to requestor. The method will get cat as category.
If skipIsSame is true, and the source is the same as an existing
methods source, this is a noop (for fast fileIn)."
^ self compile:aString
forClass:aClass
inCategory:cat
notifying:requestor
install:install
skipIfSame:skipIfSame
silent:false
!
compile:aString forClass:aClass inCategory:cat notifying:requestor
install:install skipIfSame:skipIfSame silent:silent
^ self
compile:aString
forClass:aClass
inCategory:cat
notifying:requestor
install:install
skipIfSame:skipIfSame
silent:silent
foldConstants:true
!
compile:aString forClass:aClass inCategory:cat notifying:requestor
install:install skipIfSame:skipIfSame silent:silent foldConstants:fold
"the basic workhorse method for compiling:
compile a source-string for a method in classToCompileFor.
errors are forwarded to requestor (report on Transcript and return
#Error, if requestor is nil).
The new method will get cat as category.
If install is true, the method will go into the classes method-table,
otherwise the method is simply returned (for anonymous methods).
If skipIsSame is true, and the source is the same as an existing
methods source, this is a noop (for fast fileIn).
The argument, silent controls if errors are to be reported."
|compiler newMethod tree symbolicCodeArray oldMethod lazy silencio
sourceFile sourceStream newSource primNr pos sel keptOldCode msg answer
pkg|
aString isNil ifTrue:[^ nil].
silencio := silent
or:[Smalltalk silentLoading == true
or:[ListCompiledMethods == false]].
"lazy compilation is EXPERIMENTAL"
lazy := (LazyCompilation == true) and:[install].
"create a compiler, let it parse and create the parsetree"
compiler := self for:(ReadStream on:aString) in:aClass.
compiler parseForCode.
fold ifFalse:[compiler foldConstants:nil].
compiler notifying:requestor.
silent ifTrue:[
"/ compiler ignoreErrors.
compiler ignoreWarnings.
compiler warnUndeclared:false.
].
"/ compiler nextToken.
(compiler parseMethodSpec == #Error) ifTrue:[
compiler parseError:'syntax error in method specification'.
tree := #Error
] ifFalse:[
lazy ifTrue:[
"/
"/ that one method IS required
"/
(aClass isMeta and:[compiler selector == #version]) ifTrue:[
lazy := false
]
].
lazy ifFalse:[
"check if same source"
(skipIfSame and:[(sel := compiler selector) notNil]) ifTrue:[
oldMethod := aClass compiledMethodAt:sel.
oldMethod notNil ifTrue:[
oldMethod source = aString ifTrue:[
oldMethod isInvalid ifFalse:[
silencio ifFalse:[
Transcript showCR:(' unchanged: ',aClass name,' ',compiler selector)
].
"
same. however, category may be different
"
(cat notNil and:[cat ~= oldMethod category]) ifTrue:[
oldMethod category:cat.
oldMethod changed:#category.
"/ aClass updateRevisionString.
aClass addChangeRecordForMethodCategory:oldMethod category:cat.
silencio ifFalse:[
Transcript showCR:(' (category change only)')
].
].
"
and package may be too.
"
pkg := Class packageQuerySignal raise.
(pkg notNil and:[pkg ~~ oldMethod package]) ifTrue:[
oldMethod package:pkg.
silencio ifFalse:[
Transcript showCR:(' (package-id change only)')
].
].
^ oldMethod
]
]
]
].
tree := compiler parseMethodBody.
compiler tree:tree.
]
].
(compiler errorFlag or:[tree == #Error]) ifTrue:[
compiler showErrorMessageForClass:aClass.
^ #Error
].
sel := compiler selector.
"if no error and also no selector ..."
sel isNil ifTrue:[
"... it was just a comment or other empty stuff"
^ nil
].
lazy ifFalse:[
"
freak-out support ...
"
((compiler hasNonOptionalPrimitiveCode
or:[(compiler hasPrimitiveCode and:[self canCreateMachineCode])
or:[STCCompilation == #always and:[sel ~~ #doIt]]])
and:[STCCompilation ~~ #never]) ifTrue:[
newMethod := compiler
compileToMachineCode:aString
forClass:aClass
inCategory:cat
notifying:requestor
install:install
skipIfSame:skipIfSame
silent:silent.
newMethod == #Error ifTrue:[
compiler showErrorMessageForClass:aClass.
^ #Error
].
(newMethod == #CannotLoad) ifTrue:[
newMethod := compiler trappingStubMethodFor:aString inCategory:cat.
keptOldCode := false.
install ifTrue:[
"/
"/ be very careful with existing methods
"/ (otherwise, you could easily make your system unusable in systems which cannot load)
"/
sel notNil ifTrue:[
oldMethod := aClass compiledMethodAt:sel
].
(oldMethod notNil and:[oldMethod code ~= newMethod code]) ifTrue:[
answer := Dialog
confirm:
'installation of binary code for ''' , aClass name , '>>' , compiler selector , '''
is not possible or disabled.
Shall I use the old methods functionality
or instead create a dummy trap method for it ?
Hint:
if that method is needed by the system, you better leave the
original functionality in the system.
Close this warnBox to abort the compilation.
'
yesLabel:'trap code'
noLabel:'keep old'.
answer isNil ifTrue:[
^ #Error
].
answer == false ifTrue:[
newMethod code:(oldMethod code).
keptOldCode := true.
].
].
aClass addSelector:sel withMethod:newMethod
].
Transcript show:'*** '.
sel notNil ifTrue:[
Transcript show:(sel ,' ')
].
keptOldCode ifTrue:[
msg := 'not really compiled - method still shows previous behavior'.
] ifFalse:[
msg := 'not compiled to machine code - created a stub instead.'.
].
Transcript showCR:msg.
].
^ newMethod
].
].
"
EXPERIMENTAL: quick loading
only create a lazyMethod, which has no byteCode and will
compile itself when first called.
"
lazy ifTrue:[
newMethod := LazyMethod new.
(ClassCategoryReader sourceMode == #sourceReference) ifTrue:[
sourceFile := ObjectMemory nameForSources.
sourceFile notNil ifTrue:[
sourceStream := sourceFile asFilename appendingWriteStream.
]
].
sourceStream isNil ifTrue:[
newMethod source:aString.
] ifFalse:[
sourceStream setToEnd.
pos := sourceStream position.
sourceStream nextChunkPut:aString.
sourceStream close.
newMethod sourceFilename:sourceFile position:pos.
].
newMethod category:cat.
newMethod package:(Class packageQuerySignal raise).
"/ Project notNil ifTrue:[
"/ newMethod package:(Project currentPackageName)
"/ ].
aClass addSelector:sel withLazyMethod:newMethod.
^ newMethod
].
(primNr := compiler primitiveNumber) isNil ifTrue:[
"
produce symbolic code first
"
symbolicCodeArray := compiler genSymbolicCode.
(symbolicCodeArray == #Error) ifTrue:[
Transcript show:' '.
sel notNil ifTrue:[
Transcript show:(sel ,' ')
].
Transcript showCR:'translation error'.
^ #Error
].
"
take this, producing bytecode
(someone willin' to make machine code :-)
"
((compiler genByteCodeFrom:symbolicCodeArray) == #Error) ifTrue:[
Transcript show:' '.
sel notNil ifTrue:[
Transcript show:(sel ,' ')
].
Transcript showCR:'relocation error - must be simplified'.
^ #Error
].
].
"
finally create the new method-object
"
newMethod := compiler createMethod.
primNr notNil ifTrue:[
newMethod code:(compiler checkForPrimitiveCode:primNr).
] ifFalse:[
newMethod byteCode:(compiler code).
].
"/ newMethod numberOfMethodVars:(compiler numberOfMethodVars).
"/ newMethod numberOfMethodArgs:(compiler numberOfMethodArgs).
"/ newMethod stackSize:(compiler maxStackDepth).
"
if there where any corrections, install the updated source
"
(newSource := compiler correctedSource) notNil ifTrue:[
newMethod source:newSource
] ifFalse:[
newMethod source:aString.
].
newMethod category:cat.
newMethod package:(Class packageQuerySignal raise).
"/ Project notNil ifTrue:[
"/ newMethod package:(Project currentPackageName)
"/ ].
install ifTrue:[
aClass addSelector:sel withMethod:newMethod
].
silencio ifFalse:[
Transcript showCR:(' compiled: ', aClass name,' ', sel)
].
^ newMethod
"Created: / 29.10.1995 / 19:59:36 / cg"
"Modified: / 24.6.1996 / 12:41:13 / stefan"
"Modified: / 25.2.1998 / 14:46:30 / cg"
!
compile:methodText forClass:classToCompileFor notifying:requestor
"compile a source-string for a method in classToCompileFor.
Errors are forwarded to requestor."
^ self compile:methodText
forClass:classToCompileFor
inCategory:'others'
notifying:requestor
install:true
skipIfSame:false
silent:false
!
compile:textOrStream in:aClass notifying:requestor ifFail:exceptionBlock
"name alias for ST-80 compatibility"
|m|
m := self
compile:textOrStream
forClass:aClass
inCategory:'others'
notifying:requestor
install:true
skipIfSame:false
silent:false.
m == #Error ifTrue:[
^ exceptionBlock value
].
^ m
! !
!ByteCodeCompiler class methodsFor:'constants'!
byteCodeFor:aSymbol
"returns the numeric code for some symbolic bytecodes."
(aSymbol == #retNil) ifTrue:[^ 1].
(aSymbol == #retTrue) ifTrue:[^ 2].
(aSymbol == #retFalse) ifTrue:[^ 3].
(aSymbol == #ret0) ifTrue:[^ 4].
(aSymbol == #retTop) ifTrue:[^ 0].
(aSymbol == #push0) ifTrue:[^120].
(aSymbol == #push1) ifTrue:[^121].
(aSymbol == #push2) ifTrue:[^139].
(aSymbol == #pushMinus1) ifTrue:[^122].
(aSymbol == #pushNil) ifTrue:[^ 10].
(aSymbol == #pushTrue) ifTrue:[^ 11].
(aSymbol == #pushFalse) ifTrue:[^ 12].
(aSymbol == #pushSelf) ifTrue:[^ 15].
self error
! !
!ByteCodeCompiler class methodsFor:'stc compilation defaults'!
canCreateMachineCode
"return true, if compilation to machine code is supported.
Currently, all SYSV4 and Linux systems do so;
REAL/IX, AIX and HPUX do not (due to the need for dynamic loading
of object files, which is not supported by those).
MIPS ULTRIX is almost finished, but not yet released.
However, if no compiler is around (i.e. the demo distribution),
there is no chance ..."
ObjectFileLoader isNil ifTrue:[^ false].
ObjectFileLoader canLoadObjectFiles ifFalse:[^ false].
"/ no chance, if no stc is available
^ self incrementalStcPath notNil
"
Compiler canCreateMachineCode
"
"Modified: 13.9.1995 / 15:15:11 / claus"
!
ccCompilationOptions
"return the options used with cc compilation"
CCCompilationOptions isNil ifTrue:[^ ''].
^ CCCompilationOptions
"
Compiler ccCompilationOptions
"
"Modified: 5.11.1996 / 17:38:56 / cg"
!
ccCompilationOptions:aString
"define the compilation options
to be used when compiling to machine code.
These are passed to cc. Can be set from your private.rc file."
CCCompilationOptions := aString
"
Compiler ccCompilationOptions:'-O'
Compiler ccCompilationOptions
"
"Created: 5.11.1996 / 17:37:05 / cg"
"Modified: 5.11.1996 / 17:38:32 / cg"
!
ccPath
"return the path to the stc command for incremental method compilation,
or nil if not found."
CC isNil ifTrue:[
^ 'cc'
].
^ CC
"
Compiler ccPath
Compiler ccPath:'gcc'
"
"Modified: 13.9.1995 / 15:15:04 / claus"
"Created: 5.11.1996 / 17:35:40 / cg"
"Modified: 5.11.1996 / 17:37:42 / cg"
!
ccPath:aPathOrCommandName
"set the path to the cc command for incremental method compilation"
CC := aPathOrCommandName
"
Compiler ccPath
Compiler ccPath:'gcc'
"
"Modified: 13.9.1995 / 15:15:04 / claus"
"Created: 5.11.1996 / 17:38:11 / cg"
!
incrementalStcPath
"return the path to the stc command for incremental method compilation,
or nil if not found."
|f|
(f := self stcPathOf:'stc') notNil ifTrue:[^ f].
^ self stcPathOf:'demostc'
"
Compiler incrementalStcPath
"
"Created: 13.9.1995 / 14:36:36 / claus"
"Modified: 13.9.1995 / 15:15:04 / claus"
!
stcCompilation
"return the flag which controls compilation to machine code.
If #always, methods are always compiled to machine code (which takes
longer, but provides faster code). If #none, methods are never compiled
to machine code, instead for non-primitive ones, compilation is to bytecode
and for primitive ones, a trapping stub is generated.
Anything else lets the compiler compile to bytecode,
except for methods containing primitive code.
This can be set from your private.rc file or from a workspace
for selective compilation to machine code."
^ STCCompilation
"
Compiler stcCompilation
"
!
stcCompilation:how
"set the flag which controls compilation to machine code.
If #always, methods are always compiled to machine code (which takes
longer, but provides faster code). If #none, methods are never compiled
to machine code, instead for non-primitive ones, compilation is to bytecode
and for primitive ones, a trapping stub is generated.
Anything else lets the compiler compile to bytecode,
except for methods containing primitive code.
This can be set from your private.rc file or from a workspace
for selective compilation to machine code."
|ret|
ret := STCCompilation.
STCCompilation := how.
^ ret
"
Compiler stcCompilation:#always
Compiler stcCompilation:#never
Compiler stcCompilation:#default
"
!
stcCompilationDefines
"return the defines used with stc compilation"
^ STCCompilationDefines
!
stcCompilationDefines:aString
"define the flags (for example, additional -D defines)
to be used when compiling to machine code.
These are passed to stc. Can be set from your private.rc file."
STCCompilationDefines := aString
"
Compiler stcCompilationDefines:'-DVGL -DDEBUG'
"
!
stcCompilationIncludes
"return the includes used with stc compilation"
^ STCCompilationIncludes
!
stcCompilationIncludes:aString
"define the include directories via additional -I flags.
These are passed to stc. Can be set in your private.rc file"
|libDir incDir|
STCCompilationIncludes := aString.
"/ if STX_LIBDIR is defined, and not in passed argument,
"/ add it here.
libDir := OperatingSystem getEnvironment:'STX_LIBDIR'.
(libDir notNil and:[libDir asFilename exists]) ifTrue:[
incDir := libDir asFilename construct:'include'.
incDir exists ifTrue:[
(STCCompilationIncludes asCollectionOfWords includes:('-I' , incDir pathName)) ifFalse:[
STCCompilationIncludes := aString , ' ' , ('-I' , incDir pathName).
]
]
]
"
Compiler stcCompilationIncludes:'-I/usr/local/include -I../../include'
Compiler stcCompilationIncludes:(Compiler stcCompilationIncludes , ' -I../../libxt')
"
"Modified: 18.7.1997 / 18:04:25 / cg"
!
stcCompilationOptions
"return the options used with stc compilation"
^ STCCompilationOptions
!
stcCompilationOptions:aString
"define the compilation options
to be used when compiling to machine code.
These are passed to stc. Can be set from your private.rc file."
STCCompilationOptions := aString
"
Compiler stcCompilationOptions:'+optinline'
"
!
stcModulePath
"return the path, where temporary modules are created"
^ STCModulePath
"Created: 12.7.1996 / 12:15:26 / cg"
!
stcModulePath:aPath
"set the path to the directory, where temporary modules are created"
STCModulePath := aPath
"Created: 12.7.1996 / 12:15:49 / cg"
!
stcPath
"return the path to the stc command, or nil if not found."
^ self stcPathOf:'stc'
"
Compiler stcPath
"
"Modified: 13.9.1995 / 14:37:26 / claus"
!
stcPathOf:command
"return the path to an stc command, or nil if not found."
|f d reqdSuffix cmd|
"/
"/ care for executable suffix
"/
cmd := command.
OperatingSystem isMSDOSlike ifTrue:[
reqdSuffix := 'exe'
] ifFalse:[
OperatingSystem isVMSlike ifTrue:[
reqdSuffix := 'EXE'
].
].
reqdSuffix notNil ifTrue:[
cmd asFilename suffix isEmpty ifTrue:[
cmd := cmd , reqdSuffix
]
].
"/
"/ for our convenience, also check in current
"/ and parent directories; even if PATH does not
"/ include them ...
"/
d := Filename currentDirectory.
(f := d construct:cmd) isExecutable ifTrue:[
^ f pathName
].
d := d construct:'..'.
(f := (d construct:'stc') construct:cmd) isExecutable ifTrue:[
^ f pathName
].
d := d construct:'..'.
(f := (d construct:'stc') construct:cmd) isExecutable ifTrue:[
^ f pathName
].
"/
"/ ok, stc must be installed in some directory along the PATH
"/
^ OperatingSystem pathOfCommand:command
"
Compiler stcPathOf:'stc'
"
"Created: 13.9.1995 / 14:37:16 / claus"
! !
!ByteCodeCompiler methodsFor:'ST-80 compatibility'!
compile:textOrStream in:aClass notifying:requestor ifFail:exceptionBlock
"name alias for ST-80 compatibility"
^ self class
compile:textOrStream
in:aClass
notifying:requestor
ifFail:exceptionBlock
"/ |m|
"/
"/ m := self class
"/ compile:textOrStream
"/ forClass:aClass
"/ inCategory:'no category'
"/ notifying:requestor
"/ install:true
"/ skipIfSame:false
"/ silent:false.
"/ m == #Error ifTrue:[
"/ ^ exceptionBlock value
"/ ].
"/ ^ m
! !
!ByteCodeCompiler methodsFor:'accessing'!
code
"return the bytecode array - only valid after code-generation"
^ codeBytes
!
literalArray
"return the literal array - only valid after parsing"
^ litArray
!
maxStackDepth
"return the stack-need of the method - only valid after code-generation"
^ maxStackDepth
! !
!ByteCodeCompiler methodsFor:'code generation'!
absJumpFromJump:code
"given a jump-symbolic code, return corresponding absolute jump"
JumpToAbsJump isNil ifTrue:[
JumpToAbsJump := IdentityDictionary new.
JumpToAbsJump at:#jump put:#jumpabs.
JumpToAbsJump at:#trueJump put:#trueJumpabs.
JumpToAbsJump at:#falseJump put:#falseJumpabs.
JumpToAbsJump at:#nilJump put:#nilJumpabs.
JumpToAbsJump at:#notNilJump put:#notNilJumpabs.
JumpToAbsJump at:#eqJump put:#eqJumpabs.
JumpToAbsJump at:#notEqJump put:#notEqJumpabs.
JumpToAbsJump at:#zeroJump put:#zeroJumpabs.
JumpToAbsJump at:#notZeroJump put:#notZeroJumpabs.
JumpToAbsJump at:#makeBlock put:#makeBlockabs.
].
^ JumpToAbsJump at:code
!
addLiteral:anObject
"add a literal to the literalArray - watch for and eliminate
duplicates. return the index of the literal in the Array"
|index "{ Class: SmallInteger }" class|
litArray isNil ifTrue:[
litArray := Array with:anObject.
^ 1
].
index := litArray identityIndexOf:anObject.
(index == 0) ifTrue:[
"
reuse constants if same value and same class
"
class := anObject class.
((class == Float)
or:[class == Fraction
or:[class == LargeInteger
"or:[class == String] --only if literalString option has been added---" ]]) ifTrue:[
index := litArray indexOf:anObject.
].
((index == 0) or:[(litArray at:index) class ~~ class]) ifTrue:[
litArray := litArray copyWith:anObject.
^ litArray size
].
].
^ index
"Modified: / 12.11.1997 / 18:49:43 / cg"
!
addReloc:symIndex
"remember to relocate offset at symIndex later ..."
relocList isNil ifTrue:[
relocList := OrderedCollection new.
].
relocList add:symIndex
!
appendByte:aByte
"append a byte to the code-Array, checking for byte-range (debug-only)"
|idx "{Class: SmallInteger }"|
idx := codeIndex.
(aByte between:0 and:255) ifTrue:[
codeBytes at:idx put:aByte.
codeIndex := idx + 1
] ifFalse:[
self error:'byte range error'.
errorFlag := #Error
]
!
appendByteCodeFor:codeSymbol
"append the byteCode for an instructionSymbol to the code-Array"
|idx "{Class: SmallInteger }"|
idx := codeIndex.
codeBytes at:idx put:(self byteCodeFor:codeSymbol).
codeIndex := idx + 1
!
appendEmptyByte
"append an empty byte to the code-Array"
|idx "{Class: SmallInteger }"|
idx := codeIndex.
codeBytes at:idx put:0.
codeIndex := idx + 1
!
appendEmptyLong
"append an empty long (4 bytes) to the code-Array"
|idx "{Class: SmallInteger }"|
idx := codeIndex.
codeBytes at:idx put:0.
codeBytes at:idx+1 put:0.
codeBytes at:idx+2 put:0.
codeBytes at:idx+3 put:0.
codeIndex := idx + 4
!
appendEmptyShort
"append an empty short (2 bytes) to the code-Array"
|idx "{Class: SmallInteger }"|
idx := codeIndex.
codeBytes at:idx put:0.
codeBytes at:idx+1 put:0.
codeIndex := idx + 2
!
appendSignedByte:aByte
"append a signedbyte (as in jump-offsets) to the code-Array,
check range and report an error if invalid"
|b "{Class: SmallInteger }"
idx "{Class: SmallInteger }"|
idx := codeIndex.
b := aByte.
(b >= 0) ifTrue:[
(b > 127) ifTrue:[
self error:'jump-range error'.
errorFlag := #Error
].
codeBytes at:idx put:b
] ifFalse:[
(b < -128) ifTrue:[
self error:'jump-range error'.
errorFlag := #Error
].
b := 256 + b
].
codeBytes at:idx put:b.
codeIndex := idx + 1
!
appendSignedWord:aWord
"append a signed word to the code-Array,
check range and report an error if invalid"
|w "{Class: SmallInteger }"|
w := aWord.
(w >= 0) ifTrue:[
(w > 16r7FFFF) ifTrue:[
self error:'word-range error'.
errorFlag := #Error
].
] ifFalse:[
(w < 16r-8000) ifTrue:[
self error:'word-range error'.
errorFlag := #Error
].
w := (16r10000 + w).
].
self appendWord:w
!
appendWord:aWord
"append an unsigned word (low-high) to the code-Array,
checking for word-range (debug-only)"
|idx "{Class: SmallInteger }"|
idx := codeIndex.
(aWord between:0 and:16rFFFF) ifTrue:[
codeBytes at:idx put:(aWord bitAnd:16rFF).
idx := idx + 1.
codeBytes at:idx put:(aWord bitShift:-8).
codeIndex := idx + 1
] ifFalse:[
self error:'word range error'.
errorFlag := #Error
]
!
byteCodeFor:aSymbol
"given a symbolic instruction, return the corresponding bytecode.
as a side-effect, leave number of bytes pushed/popped by this instr.
in stackDelta, and, if the instruction needs extra arguments, leave
this info in extra. Also lineno is set to true, if this code has line
information and extraLiteral is set if any hidden send is performed by it."
"standard bytecodes"
(aSymbol == #pushNil) ifTrue:[stackDelta := 1. ^ 10].
(aSymbol == #pushTrue) ifTrue:[stackDelta := 1. ^ 11].
(aSymbol == #pushFalse) ifTrue:[stackDelta := 1. ^ 12].
(aSymbol == #pushLit) ifTrue:[stackDelta := 1. extra := #lit. ^ 14].
(aSymbol == #pushLitS) ifTrue:[stackDelta := 1. extra := #index. ^ 14].
(aSymbol == #pushSelf) ifTrue:[stackDelta := 1. ^ 15].
(aSymbol == #pushNum) ifTrue:[stackDelta := 1. extra := #number. ^ 16].
(aSymbol == #pushMethodArg) ifTrue:[stackDelta := 1. extra := #index. ^ 30].
(aSymbol == #pushMethodVar) ifTrue:[stackDelta := 1. extra := #index. ^ 31].
(aSymbol == #pushBlockArg) ifTrue:[stackDelta := 1. extra := #index. ^ 32].
(aSymbol == #pushBlockVar) ifTrue:[stackDelta := 1. extra := #index. ^ 33].
(aSymbol == #pushInstVar) ifTrue:[stackDelta := 1. extra := #index. ^ 34].
(aSymbol == #pushOuterBlockArg) ifTrue:[stackDelta := 1. extra := #indexLevel. ^ 42].
(aSymbol == #pushOuterBlockVar) ifTrue:[stackDelta := 1. extra := #indexLevel. ^ 128].
(aSymbol == #retTop) ifTrue:[stackDelta := -1. ^ 0].
(aSymbol == #retSelf) ifTrue:[^5].
(aSymbol == #==) ifTrue:[stackDelta := -1. extraLiteral := aSymbol. ^ 45].
(aSymbol == #~~) ifTrue:[stackDelta := -1. extraLiteral := aSymbol. ^ 46].
(aSymbol == #falseJump) ifTrue:[stackDelta := -1. extra := #offset. ^ 50].
(aSymbol == #trueJump) ifTrue:[stackDelta := -1. extra := #offset. ^ 51].
(aSymbol == #nilJump) ifTrue:[stackDelta := -1. extra := #offset. ^ 52].
(aSymbol == #notNilJump) ifTrue:[stackDelta := -1. extra := #offset. ^ 53].
(aSymbol == #jump) ifTrue:[extra := #offset. ^ 54].
(aSymbol == #makeBlock) ifTrue:[stackDelta := 1. extra := #offsetNvarNarg. ^ 55].
(aSymbol == #zeroJump) ifTrue:[stackDelta := -1. extra := #offset. ^ 56].
(aSymbol == #notZeroJump) ifTrue:[stackDelta := -1. extra := #offset. ^ 57].
(aSymbol == #eqJump) ifTrue:[stackDelta := -2. extra := #offset. ^ 58].
(aSymbol == #notEqJump) ifTrue:[stackDelta := -2. extra := #offset. ^ 59].
(aSymbol == #lineno) ifTrue:[lineno := true. ^ 8].
(aSymbol == #lineno16) ifTrue:[lineno := true. ^ 9].
(aSymbol == #send) ifTrue:[lineno := true. extra := #special. ^ 19].
(aSymbol == #superSend) ifTrue:[lineno := true. extra := #special. ^ 20].
(aSymbol == #hereSend) ifTrue:[lineno := true. extra := #special. ^ 20].
(aSymbol == #sendSelf) ifTrue:[lineno := true. extra := #special. ^ 13].
(aSymbol == #drop) ifTrue:[stackDelta := -1. ^ 18].
(aSymbol == #dup) ifTrue:[stackDelta := 1. ^ 47].
(aSymbol == #storeMethodVar) ifTrue:[extra := #index. stackDelta := -1. ^ 37].
(aSymbol == #storeBlockVar) ifTrue:[extra := #index. stackDelta := -1. ^ 38].
(aSymbol == #storeInstVar) ifTrue:[extra := #index. stackDelta := -1. ^ 39].
(aSymbol == #pushClassVarS) ifTrue:[stackDelta := 1. extra := #speciallitS. ^ 35].
(aSymbol == #pushGlobalS) ifTrue:[stackDelta := 1. extra := #speciallitS. ^ 36].
(aSymbol == #storeClassVarS) ifTrue:[extra := #speciallitS.stackDelta := -1. ^ 40].
(aSymbol == #storeGlobalS) ifTrue:[extra := #speciallitS. stackDelta := -1. ^ 41].
(aSymbol == #pushSpecialGlobal) ifTrue:[stackDelta := 1. extra := #index. ^ 200].
(aSymbol == #storeOuterBlockVar) ifTrue:[stackDelta := -1. extra := #indexLevel. ^ 129].
(aSymbol == #pushClassInstVar) ifTrue:[stackDelta := 1. extra := #index. ^ 176].
(aSymbol == #storeClassInstVar) ifTrue:[extra := #index.stackDelta := -1. ^ 177].
"optimized bytecodes"
(aSymbol == #retNil) ifTrue:[^ 1].
(aSymbol == #retTrue) ifTrue:[^ 2].
(aSymbol == #retFalse) ifTrue:[^ 3].
(aSymbol == #ret0) ifTrue:[^ 4].
(aSymbol == #retNum) ifTrue:[extra := #number. ^ 127].
(aSymbol == #homeRetTop) ifTrue:[^ 7].
(aSymbol == #pushNum16) ifTrue:[stackDelta := 1. extra := #number16. ^ 17].
(aSymbol == #push0) ifTrue:[stackDelta := 1. ^120].
(aSymbol == #push1) ifTrue:[stackDelta := 1. ^121].
(aSymbol == #push2) ifTrue:[stackDelta := 1. ^139].
(aSymbol == #pushMinus1) ifTrue:[stackDelta := 1. ^122].
(aSymbol == #send0) ifTrue:[lineno := true. extra := #index. ^21].
(aSymbol == #send1) ifTrue:[lineno := true. extra := #index. stackDelta := -1. ^22].
(aSymbol == #send2) ifTrue:[lineno := true. extra := #index. stackDelta := -2. ^23].
(aSymbol == #send3) ifTrue:[lineno := true. extra := #index. stackDelta := -3. ^24].
(aSymbol == #sendSelf0) ifTrue:[lineno := true. extra := #index. stackDelta := 1. ^180].
(aSymbol == #sendSelf1) ifTrue:[lineno := true. extra := #index. ^181].
(aSymbol == #sendSelf2) ifTrue:[lineno := true. extra := #index. stackDelta := -1. ^182].
(aSymbol == #sendSelf3) ifTrue:[lineno := true. extra := #index. stackDelta := -2. ^183].
(aSymbol == #sendSelfDrop0) ifTrue:[lineno := true. extra := #index. ^184].
(aSymbol == #sendSelfDrop1) ifTrue:[lineno := true. extra := #index. stackDelta := -1. ^185].
(aSymbol == #sendSelfDrop2) ifTrue:[lineno := true. extra := #index. stackDelta := -2. ^186].
(aSymbol == #sendSelfDrop3) ifTrue:[lineno := true. extra := #index. stackDelta := -3. ^187].
(aSymbol == #sendDrop) ifTrue:[lineno := true. extra := #special. ^25].
(aSymbol == #sendDrop0) ifTrue:[lineno := true. extra := #index. stackDelta := -1. ^26].
(aSymbol == #sendDrop1) ifTrue:[lineno := true. extra := #index. stackDelta := -2. ^27].
(aSymbol == #sendDrop2) ifTrue:[lineno := true. extra := #index. stackDelta := -3. ^28].
(aSymbol == #sendDrop3) ifTrue:[lineno := true. extra := #index. stackDelta := -4. ^29].
(aSymbol == #pushMethodVar1) ifTrue:[stackDelta := 1. ^80].
(aSymbol == #pushMethodVar2) ifTrue:[stackDelta := 1. ^81].
(aSymbol == #pushMethodVar3) ifTrue:[stackDelta := 1. ^82].
(aSymbol == #pushMethodVar4) ifTrue:[stackDelta := 1. ^83].
(aSymbol == #pushMethodVar5) ifTrue:[stackDelta := 1. ^84].
(aSymbol == #pushMethodVar6) ifTrue:[stackDelta := 1. ^85].
(aSymbol == #pushMethodArg1) ifTrue:[stackDelta := 1. ^86].
(aSymbol == #pushMethodArg2) ifTrue:[stackDelta := 1. ^87].
(aSymbol == #pushMethodArg3) ifTrue:[stackDelta := 1. ^88].
(aSymbol == #pushMethodArg4) ifTrue:[stackDelta := 1. ^89].
(aSymbol == #pushInstVar1) ifTrue:[stackDelta := 1. ^90].
(aSymbol == #pushInstVar2) ifTrue:[stackDelta := 1. ^91].
(aSymbol == #pushInstVar3) ifTrue:[stackDelta := 1. ^92].
(aSymbol == #pushInstVar4) ifTrue:[stackDelta := 1. ^93].
(aSymbol == #pushInstVar5) ifTrue:[stackDelta := 1. ^94].
(aSymbol == #pushInstVar6) ifTrue:[stackDelta := 1. ^95].
(aSymbol == #pushInstVar7) ifTrue:[stackDelta := 1. ^96].
(aSymbol == #pushInstVar8) ifTrue:[stackDelta := 1. ^97].
(aSymbol == #pushInstVar9) ifTrue:[stackDelta := 1. ^98].
(aSymbol == #pushInstVar10) ifTrue:[stackDelta := 1. ^99].
(aSymbol == #storeMethodVar1) ifTrue:[stackDelta := -1. ^100].
(aSymbol == #storeMethodVar2) ifTrue:[stackDelta := -1. ^101].
(aSymbol == #storeMethodVar3) ifTrue:[stackDelta := -1. ^102].
(aSymbol == #storeMethodVar4) ifTrue:[stackDelta := -1. ^103].
(aSymbol == #storeMethodVar5) ifTrue:[stackDelta := -1. ^104].
(aSymbol == #storeMethodVar6) ifTrue:[stackDelta := -1. ^105].
(aSymbol == #storeInstVar1) ifTrue:[stackDelta := -1. ^110].
(aSymbol == #storeInstVar2) ifTrue:[stackDelta := -1. ^111].
(aSymbol == #storeInstVar3) ifTrue:[stackDelta := -1. ^112].
(aSymbol == #storeInstVar4) ifTrue:[stackDelta := -1. ^113].
(aSymbol == #storeInstVar5) ifTrue:[stackDelta := -1. ^114].
(aSymbol == #storeInstVar6) ifTrue:[stackDelta := -1. ^115].
(aSymbol == #storeInstVar7) ifTrue:[stackDelta := -1. ^116].
(aSymbol == #storeInstVar8) ifTrue:[stackDelta := -1. ^117].
(aSymbol == #storeInstVar9) ifTrue:[stackDelta := -1. ^118].
(aSymbol == #storeInstVar10) ifTrue:[stackDelta := -1. ^119].
(aSymbol == #pushLit1) ifTrue:[stackDelta := 1. ^ 222].
(aSymbol == #pushLit2) ifTrue:[stackDelta := 1. ^ 223].
(aSymbol == #pushLit3) ifTrue:[stackDelta := 1. ^ 224].
(aSymbol == #pushLit4) ifTrue:[stackDelta := 1. ^ 225].
(aSymbol == #pushLit5) ifTrue:[stackDelta := 1. ^ 226].
(aSymbol == #pushLit6) ifTrue:[stackDelta := 1. ^ 227].
(aSymbol == #pushLit7) ifTrue:[stackDelta := 1. ^ 228].
(aSymbol == #pushLit8) ifTrue:[stackDelta := 1. ^ 229].
(aSymbol == #retMethodVar1) ifTrue:[^160].
(aSymbol == #retMethodVar2) ifTrue:[^161].
(aSymbol == #retMethodVar3) ifTrue:[^162].
(aSymbol == #retMethodVar4) ifTrue:[^163].
(aSymbol == #retMethodVar5) ifTrue:[^164].
(aSymbol == #retMethodVar6) ifTrue:[^165].
(aSymbol == #retInstVar1) ifTrue:[^166].
(aSymbol == #retInstVar2) ifTrue:[^167].
(aSymbol == #retInstVar3) ifTrue:[^168].
(aSymbol == #retInstVar4) ifTrue:[^169].
(aSymbol == #retInstVar5) ifTrue:[^170].
(aSymbol == #retInstVar6) ifTrue:[^171].
(aSymbol == #retInstVar7) ifTrue:[^172].
(aSymbol == #retInstVar8) ifTrue:[^173].
(aSymbol == #retMethodArg1) ifTrue:[^174].
(aSymbol == #retMethodArg2) ifTrue:[^175].
(aSymbol == #pushBlockArg1) ifTrue:[stackDelta := 1. ^140].
(aSymbol == #pushBlockArg2) ifTrue:[stackDelta := 1. ^141].
(aSymbol == #pushBlockArg3) ifTrue:[stackDelta := 1. ^142].
(aSymbol == #pushBlockArg4) ifTrue:[stackDelta := 1. ^143].
(aSymbol == #pushOuter1BlockArg) ifTrue:[stackDelta := 1. extra := #index. ^ 43].
(aSymbol == #pushOuter2BlockArg) ifTrue:[stackDelta := 1. extra := #index. ^ 44].
(aSymbol == #=) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^130].
(aSymbol == #+) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^131].
(aSymbol == #~=) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^132].
(aSymbol == #-) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^133].
(aSymbol == #*) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^230].
(aSymbol == #class) ifTrue:[extraLiteral := aSymbol. ^134].
"/ (aSymbol == #x) ifTrue:[lineno := true. extraLiteral := aSymbol. ^106].
"/ (aSymbol == #y) ifTrue:[lineno := true. extraLiteral := aSymbol. ^107].
"/ (aSymbol == #width) ifTrue:[lineno := true. extraLiteral := aSymbol. ^108].
"/ (aSymbol == #height) ifTrue:[lineno := true. extraLiteral := aSymbol. ^109].
"/ (aSymbol == #origin) ifTrue:[lineno := true. extraLiteral := aSymbol. ^154].
"/ (aSymbol == #extent) ifTrue:[lineno := true. extraLiteral := aSymbol. ^155].
(aSymbol == #at:) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^135].
(aSymbol == #at:put:)ifTrue:[lineno := true. stackDelta := -2. extraLiteral := aSymbol. ^136].
(aSymbol == #bitAnd:) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^137].
(aSymbol == #bitOr:) ifTrue:[lineno := true. stackDelta := -1. extraLiteral := aSymbol. ^138].
(aSymbol == #plus1) ifTrue:[lineno := true. extraLiteral := #+. ^123].
(aSymbol == #minus1) ifTrue:[lineno := true. extraLiteral := #-. ^124].
(aSymbol == #incMethodVar) ifTrue:[lineno := true. extraLiteral := #+. extra := #index. ^125].
(aSymbol == #decMethodVar) ifTrue:[lineno := true. extraLiteral := #-. extra := #index. ^126].
(aSymbol == #eq0) ifTrue:[extraLiteral := #==. ^48].
(aSymbol == #ne0) ifTrue:[extraLiteral := #~~. ^49].
(aSymbol == #>) ifTrue:[lineno := true. extraLiteral := aSymbol. stackDelta := -1. ^ 145].
(aSymbol == #>=) ifTrue:[lineno := true. extraLiteral := aSymbol. stackDelta := -1. ^ 146].
(aSymbol == #<) ifTrue:[lineno := true. extraLiteral := aSymbol. stackDelta := -1. ^ 147].
(aSymbol == #<=) ifTrue:[lineno := true. extraLiteral := aSymbol. stackDelta := -1. ^ 148].
"/ (aSymbol == #next) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 149].
"/ (aSymbol == #peek) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 150].
(aSymbol == #value) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 151].
(aSymbol == #value:) ifTrue:[lineno := true. extraLiteral := aSymbol. stackDelta := -1. ^ 152].
(aSymbol == #value:value:) ifTrue:[lineno := true. extraLiteral := aSymbol. stackDelta := -2. ^ 178].
(aSymbol == #size) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 153].
"/ (aSymbol == #asInteger) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 158].
"/ (aSymbol == #rounded) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 159].
(aSymbol == #mk0Block) ifTrue:[^ 156].
(aSymbol == #mkNilBlock) ifTrue:[^ 157].
(aSymbol == #gt0) ifTrue:[lineno := true. extraLiteral := #>. ^ 212].
(aSymbol == #pushgt0) ifTrue:[lineno := true. stackDelta := 1. extraLiteral := #>. ^ 208].
(aSymbol == #basicNew) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 211].
(aSymbol == #new) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 213].
(aSymbol == #basicNew:) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 214].
(aSymbol == #new:) ifTrue:[lineno := true. extraLiteral := aSymbol. ^ 215].
(aSymbol == #pushBlockVar1) ifTrue:[stackDelta := 1. ^ 232].
(aSymbol == #pushBlockVar2) ifTrue:[stackDelta := 1. ^ 233].
(aSymbol == #pushBlockVar3) ifTrue:[stackDelta := 1. ^ 234].
(aSymbol == #storeBlockVar1) ifTrue:[stackDelta := -1. ^ 235].
(aSymbol == #storeBlockVar2) ifTrue:[stackDelta := -1. ^ 236].
(aSymbol == #storeBlockVar3) ifTrue:[stackDelta := -1. ^ 237].
(aSymbol == #falseJumpabs) ifTrue:[stackDelta := -1. extra := #absoffset. ^ 190].
(aSymbol == #trueJumpabs) ifTrue:[stackDelta := -1. extra := #absoffset. ^ 191].
(aSymbol == #nilJumpabs) ifTrue:[stackDelta := -1. extra := #absoffset. ^ 192].
(aSymbol == #notNilJumpabs) ifTrue:[stackDelta := -1. extra := #absoffset. ^ 193].
(aSymbol == #jumpabs) ifTrue:[extra := #absoffset. ^ 194].
(aSymbol == #makeBlockabs) ifTrue:[stackDelta := 1. extra := #absoffsetNvarNarg. ^ 195].
(aSymbol == #zeroJumpabs) ifTrue:[stackDelta := -1. extra := #absoffset. ^ 196].
(aSymbol == #notZeroJumpabs) ifTrue:[stackDelta := -1. extra := #absoffset. ^ 197].
(aSymbol == #eqJumpabs) ifTrue:[stackDelta := -2. extra := #absoffset. ^ 198].
(aSymbol == #notEqJumpabs) ifTrue:[stackDelta := -2. extra := #absoffset. ^ 199].
(aSymbol == #pushThisContext) ifTrue:[stackDelta := 1. ^ 144].
(aSymbol == #isNil) ifTrue:[extraLiteral := aSymbol. ^ 188].
(aSymbol == #notNil) ifTrue:[extraLiteral := aSymbol. ^ 189].
(aSymbol == #not) ifTrue:[extraLiteral := aSymbol. lineno := true. ^ 179].
(aSymbol == #&) ifTrue:[extraLiteral := aSymbol. lineno := true. ^ 216].
(aSymbol == #|) ifTrue:[extraLiteral := aSymbol. lineno := true. ^ 217].
(aSymbol == #pushClassVarL) ifTrue:[stackDelta := 1. extra := #speciallitL. ^ 218].
(aSymbol == #pushGlobalL) ifTrue:[stackDelta := 1. extra := #speciallitL. ^ 218].
(aSymbol == #storeClassVarL) ifTrue:[extra := #speciallitL.stackDelta := -1. ^ 219].
(aSymbol == #storeGlobalL) ifTrue:[extra := #speciallitL. stackDelta := -1. ^ 219].
(aSymbol == #pushLitL) ifTrue:[stackDelta := 1. extra := #unsigned16. ^ 201].
(aSymbol == #sendL) ifTrue:[lineno := true. extra := #specialL. ^ 205].
(aSymbol == #sendSelfL) ifTrue:[lineno := true. extra := #specialL. ^ 207].
(aSymbol == #sendDropL) ifTrue:[lineno := true. extra := #specialL. ^ 204].
(aSymbol == #superSendL) ifTrue:[lineno := true. extra := #specialL. ^ 206].
(aSymbol == #hereSendL) ifTrue:[lineno := true. extra := #specialL. ^ 206].
(aSymbol == #top) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #bottom) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #left) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #right) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #x) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #y) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #width) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #height) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #origin) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #extent) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #next) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #peek) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #asInteger) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #rounded) ifTrue:[lineno := true. extraLiteral := aSymbol. extra := #specialSend. ^ 231].
(aSymbol == #blockRef) ifTrue:[stackDelta := 0. ^ 238].
(aSymbol == #over) ifTrue:[stackDelta := 1. ^ 6].
self error:'invalid code symbol'.
errorFlag := #Error
"Modified: 3.9.1995 / 12:58:47 / claus"
"Modified: 25.6.1997 / 11:47:26 / cg"
!
checkForCommonCode:symbolicCodeArray
"hook to return the code for common code sequences.
This reduces the in-memory number of byteArrays somewhat.
Not yet fully implemented - just an idea ... theres certainly more to do here
(does it make sense to scan all methods, collect code in a set and unify things
automatically in the background - or upon request ?)"
|sz insn1|
(sz := symbolicCodeArray size) == 2 ifTrue:[
"/
"/ a very common sequence: return the first literal
"/
(insn1 := symbolicCodeArray at:1) == #pushLit1 ifTrue:[
(symbolicCodeArray at:2) == #retTop ifTrue:[
^ #[222 0]
]
]
].
sz == 1 ifTrue:[
"/
"/ another common sequence: return the receiver
"/
(insn1 := symbolicCodeArray at:1) == #retSelf ifTrue:[
^ #[5]
].
insn1 == #retTrue ifTrue:[
^ #[2]
].
insn1 == #retFalse ifTrue:[
^ #[3]
].
].
^ nil
!
checkForPrimitiveCode:nr
"return the code for an ST-80 primitive method.
Since many primitives available on ST-80 should also be available
somewhere in ST/X, this may work for many primitive numbers.
However, more information is needed and more things to be added below.
This was added to allow emulation of (some) ST-80
primitives (to fileIn RemoteInvocation & Monitor41 packages)"
|cls sel|
(nr == 75) ifTrue:[ cls := Object. sel := #identityHash ].
(nr == 110) ifTrue:[ cls := Object. sel := #== ].
(nr == 111) ifTrue:[ cls := Object. sel := #class ].
"
should add more here, to be able to fileIn ST-80 methods
containing primitive calls (who gives me the numbers ... ?)
mhmh - got some ..."
"/ 18 Number @
"/ 21 LargePositiveInteger +
"/ 22 LargePositiveInteger -
"/ 29 LargePositiveInteger *
"/ 30 LargePositiveInteger /
"/ 31 LargePositiveInteger \\
"/ 32 LargePositiveInteger //
"/ 34 LargePositiveInteger bitAnd:
"/ 35 LargePositiveInteger bitOr:
"/ 36 LargePositiveInteger bitXor:
"/ 37 LargePositiveInteger bitShift:
"/ 40 SmallInteger asFloat
"/ 41 Float +
"/ 42 Float -
"/ 49 Float *
"/ 50 Float /
"/ 52 Float fractionPart
"/ 54 Float timesTwoPower:
"/ 70 Behavior basicNew
"/ 71 Behavior basicNew:
"/ 89 Behavior flushVMmethodCache
"/ 91 InputState primCursorLocPut:
"/ 105 ByteArray replaceElementsFrom:to:withByteArray:startingAt:
"/ 223 ByteString =
"/ 306 ObjectMemory class sizesAtStartup
"/ 307 ObjectMemory class defaultSizesAtStartup
"/ 309 ObjectMemory class defaultThresholds
"/ 326 ObjectMemory class getMemoryUsageAndZeroFragmentationStatisticsIf:
"/ 395 ExternalInterface ???
"/ 400 FormBitmap class newWidth:height:
"/ 414 TwoByteString replaceElementsFrom:to:withTwoByteString:startingAt:
"/ 415 TwoByteString =
"/ 417 String trueCompare:
"/ 418 ByteString nextIndexOf:from:to:
"/ 419 ByteString prevIndexOf:from:to:
"/ 422 WeakArray indexOf:replaceWith:startingAt:stoppingAt:
"/ 522 Behavior flushVMmethodCacheEntriesFor:
"/ 524 Context nFromVPC:
"/ 525 Context vFromNPC:
"/ 532 Object shallowCopy
"/ 536 Behavior atomicAllInstances
"/ 537 Object allOwners
"/ 538 ObjectMemory class allObjects
"/ 546 UninterpretedBytes longAt:
"/ 548 UninterpretedBytes floatAt:
"/ 550 UninterpretedBytes longFloatAt:
"/ 544 UninterpretedBytes unsignedLongAt:
"/ 559 ByteArray replaceBytesFrom:to:with:startingAt:
"/ 560 Double class fromNumber:
"/ 561 Double +
"/ 562 Double -
"/ 569 Double *
"/ 570 Double /
"/ 572 Double fractionPart
"/ 574 Double timesTwoPower:
"/ 576 Double sin
"/ 577 Double cos
"/ 578 Double tan
"/ 579 Double arcSin
"/ 580 Double arcCos
"/ 581 Double arcTan
"/ 582 Double sqrt
"/ 583 Double ln
"/ 584 Double exp
"/ 585 Double raisedTo:
"/ 587 Double floorLog10
"/ 588 Double asFloat
"/ 591 Float cos
"/ 592 Float arcSin
"/ 593 Float arcCos
"/ 600 Float sin
"/ 601 Float tan
"/ 602 Float arcTan
"/ 603 Float sqrt
"/ 604 Float ln
"/ 605 Float exp
"/ 606 Float raisedTo:
"/ 609 Float floorLog10
"/ 610 Filename getDatesErrInto:
"/ 614 DosFilename class getVolumes
"/ 615 UnixFilename primSetProtection:errInto:
"/ 616 UnixFilename class primSetCreationMask:errInto:
"/ 617 UnixFilename primGetProtectionErrInto:
"/ 620 Filename listDirectoryErrInto:
"/ 621 Filename deleteErrInto:
"/ 622 Filename isDirectoryErrInto:
"/ 623 Filename renameTo:errInto:
"/ 624 Filename makeDirectoryErrInto:
"/ 625 Filename class defaultDirectoryErrInto:
"/ 626 Filename fileSizeErrInto:
"/ 627 Filename isWritableErrInto:
"/ 628 Filename setWritable:errInto:
"/ 629 Filename existsErrInto:
"/ 630 SocketAccessor setOptionsLevel:name:value:
"/ 631 SocketAccessor getOptionsLevel:name:
"/ 632 SocketAccessor primGetName
"/ 633 SocketAccessor primGetPeer
"/ 634 SocketAccessor atMark
"/ 637 UnixTtyAccessor primGetOptions
"/ 638 UnixTtyAccessor setOptions:
"/ 639 UnixRealTtyAccessor modemBits:mask:sendBreak:
"/ 640 IPSocketAddress class primHostAddressByName:
"/ 641 IPSocketAddress class netAddressByName:
"/ 642 IPSocketAddress class protocolNumberByName:
"/ 643 IPSocketAddress class servicePortByName:
"/ 645 IPSocketAddress class primHostNameByAddress:
"/ 646 IPSocketAddress class netNameByAddress:
"/ 647 IPSocketAddress class protocolNameByNumber:
"/ 648 IPSocketAddress class serviceNameByPort:
"/ 649 SocketAccessor class getHostname
"/ 650 Filename primOpenFileNamed:direction:creation:errorInto:
"/ 651 IOAccessor primClose
"/ 652 UnixPipeAccessor class primPipeErrorInto:
"/ 653 UnixPseudoTtyAccessor class primPtyErrorInto:
"/ 654 SocketAccessor class primPairErrorInto:
"/ 655 UnixRealTtyAccessor class primOpen:errInto:
"/ 660 IOAccessor primReadInto:startingAt:for:
"/ 661 IOAccessor primWriteFrom:startingAt:for:
"/ 662 IOAccessor primSeekTo:
"/ 664 IOAccessor truncateTo:
"/ 665 DosDiskFileAccessor commit
"/ 666 IOAccessor primGetSize
"/ 667 MacDiskFileAccessor lock:for:
"/ 669 UnixIOAccessor bytesForRead
"/ 670 SocketAccessor class primFamily:type:protocol:errInto:
"/ 671 SocketAccessor primAccept
"/ 672 SocketAccessor bindTo:
"/ 673 SocketAccessor listenFor:
"/ 674 SocketAccessor primConnectTo:
"/ 675 SocketAccessor primReceiveFrom:buffer:start:for:flags:
"/ 676 SocketAccessor sendTo:buffer:start:for:flags:
"/ 677 SocketAccessor shutdown:
"/ 681 UnixProcess class primFork:arguments:environment:descriptors:errorTo:
"/ 682 UnixProcess class reapOne
"/ 683 UnixProcess kill:
"/ 690 CEnvironment class primEnvironment
"/ 697 OSErrorHolder class errorDescriptionFor:
"/ 697 ErrorHolder class errorDescriptionFor:
"/ 698 SocketAccessor class primInit:
"/ 700 ParagraphEditor class getExternalSelectionOrNil:
"/ 701 ParagraphEditor class putExternalSelection:with:
"/ 705 Screen ringBell
"/ 706 Cursor class primOpenImage:mask:hotSpotX:hotSpotY:background:foreground:
"/ 707 Cursor primBeCursor
"/ 708 Cursor primFreeCursor
"/ 772 SoundManager enumerateSoundsFrom:
"/ 773 SoundManager playSoundFrom:sound:
"/ 774 SoundManager simpleBeep:
"/ 775 Pixmap primFromClipboard
"/ 776 Pixmap toClipboard
"/ 808 Context findNextMarkedUpTo:
"/ 809 Context terminateTo:
"/ 710 DosTtyAccessor class primOpen:errInto:
"/ 711 DosTtyAccessor primClose
"/ 712 DosTtyAccessor primReadInto:startingAt:for:
"/ 713 DosTtyAccessor primWriteFrom:startingAt:for:
"/ 714 DosTtyAccessor primGetOptions
"/ 715 DosTtyAccessor primSetOptions:
"/ 716 DosTtyAccessor setSem:forWrite:
"/ 717 DosTtyAccessor modemBits:mask:sendBreak:
"/ 750 MacFilename class getVolumes
"/ 752 MacFilename primSetCreator:type:errInto:
"/ 754 MacIOAccessor class getAccessories
"/ 755 MacIOAccessor class runAccessory:
"/ 756 MacOSFilename class getFileTypes:errInto:
"/ 757 MacOSFilename putFileWithPrompt:errInto:
"/ 758 MacOSFilename getFileInfoErrInto:
"/ 759 MacOSFilename stringFromVRefErrInto:
"/ 761 MacOSFilename class getStartupFilesErrInto:
"/ 770 DosFilename printPSFileErrInto:
"/ 771 DosFilename printTextFileErrInto:
"/ 780 MacTtyAccessor class primOpen:errInto:
"/ 781 MacTtyAccessor primClose
"/ 782 MacTtyAccessor primReadInto:startingAt:for:
"/ 783 MacTtyAccessor primWriteFrom:startingAt:for:
"/ 786 MacTtyAccessor primGetOptions
"/ 787 MacTtyAccessor setOptions:
"/ 788 MacTtyAccessor primBreak:
"/ 790 MacTtyAccessor primGetStatus
"/ 792 MacTtyAccessor setSem:forWrite:
"/ 793 MacTtyAccessor primAssertDTR:
"/ 794 MacTtyAccessor primGetSize
"/ 933 ByteArray copyBitsClippedStride:...
"/ 934 ByteArray tileBits32By32Stride:...
"/ 935 Screen dragShape:...
"/ 936 Screen resizeRectangle...
"/ 937 Screen displayShape:...
"/ 938 Window resizeFromUserWithMinimum:maximum:
"/ 940 Window primClose
"/ 942 Window getDimensions
"/ 943 Window moveTo:resize:
"/ 944 Window primMap
"/ 945 Window class primNewAt:extent:min:max:windowType:
"/ 946 Screen flush
"/ 947 Screen getScreenDimensions
"/ 948 Window unmap
"/ 950 Screen sync
"/ 951 Window setIconMask:
"/ 952 Window label:iconLabel:
"/ 953 Window raise
"/ 954 Window lower
"/ 955 Screen queryStackingOrder
"/ 956 TextMeasurer primScanCharactersFrom:...
"/ 957 GraphicsContext displayMappedString:from:to:at:withMap:
"/ 959 Window setBackgroundPixel:
"/ 960 Screen class primOpen:
"/ 965 UnmappableSurface contentsOfAreaOriginX:y:width:height:
"/ 966 Window contentsOfAreaOriginX:y:width:height:
"/ 967 Screen contentsOfAreaOriginX:y:width:height:
"/ 970 Mask class primExtent:depth:
"/ 971 Mask privateClose
"/ 976 GraphicsContext displayCharacterOfIndex:at:
"/ 978 DeviceFont class listFonts
"/ 979 DeviceFont primLoadFont
"/ 980 DeviceFont primUnLoadFont
"/ 985 GraphicsContext displayLineFrom:to:
"/ 986 GraphicsContext displayPolyline:at:
"/ 987 GraphicsContext displayPolygon:at:
"/ 988 GraphicsContext primDisplayRectangleOrigin:extent:
"/ 989 GraphicsContext primDisplayRectangularBorderOrigin:extent:
"/ 990 GraphicsContext primDisplayArcBBoxOrigin:extent:startAngle:sweepAngle:
"/ 991 GraphicsContext primDisplayWedgeBBoxOrigin:extent:startAngle:sweepAngle:
"/ 992 GraphicsContext displayMask:at:"
"/ 993 GraphicsContext displayUninterpretedImageBits:at:
"/ 994 GraphicsContext primCopyRectangularAreaExtent:from:sourceOffset:destinationOffset:
"/ 995 GraphicsContext primCopyMaskedArea:from:sourceOffset:destinationOffset:
"/ 996 Screen deviceColormap
"/ 998 GraphicsContext displayUninterpretedMonoImageBits:foreground:background:at:
cls notNil ifTrue:[
^ (cls compiledMethodAt:sel) code
].
^ nil
!
createMethod
|newMethod|
newMethod := Method new:(litArray size).
litArray notNil ifTrue:[
"/ fixup CheapBlocks method-field in literal array,
litArray do:[:aLiteral |
(aLiteral isMemberOf:CheapBlock) ifTrue:[
aLiteral setMethod:newMethod.
]
].
newMethod literals:litArray
].
newMethod numberOfVars:(self numberOfMethodVars + (maxNumTemp ? 0)).
newMethod numberOfArgs:(self numberOfMethodArgs).
newMethod stackSize:(self maxStackDepth).
primitiveResource notNil ifTrue:[
newMethod setResourceFlag
].
^ newMethod
"Created: 18.5.1996 / 16:33:17 / cg"
"Modified: 24.6.1996 / 12:32:50 / stefan"
"Modified: 1.8.1997 / 00:27:29 / cg"
!
genByteCodeFrom:symbolicCodeArray
"convert symbolicCode into bytecodes"
|symIndex "{Class: SmallInteger }"
codeSize "{Class: SmallInteger }"
symCodeSize "{Class: SmallInteger }"
index nextSym addr
codeSymbol nargs needRetry
stackDepth relocInfo level nvars round|
symbolicCodeArray isNil ifTrue:[^ self].
round := 0.
needRetry := true.
symCodeSize := symbolicCodeArray size.
ShareCode ifTrue:[
codeBytes := self checkForCommonCode:symbolicCodeArray.
codeBytes notNil ifTrue:[
^ self
].
].
codeSize := symCodeSize.
[needRetry] whileTrue:[
stackDepth := 0.
maxStackDepth := 0.
codeBytes := ByteArray uninitializedNew:codeSize.
relocInfo := Array basicNew:(codeSize + 1).
symIndex := 1.
codeIndex := 1.
needRetry := false.
round := round + 1.
[symIndex <= symCodeSize] whileTrue:[
relocInfo at:symIndex put:codeIndex.
codeSymbol := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
stackDelta := 0.
extra := extraLiteral := nil.
lineno := false.
self appendByteCodeFor:codeSymbol.
extraLiteral notNil ifTrue:[
self addLiteral:extraLiteral
].
lineno ifTrue:[
self appendByte:((symbolicCodeArray at:symIndex) min:255).
symIndex := symIndex + 1.
codeSymbol == #lineno16 ifTrue:[
self appendByte:((symbolicCodeArray at:symIndex) min:255).
symIndex := symIndex + 1
]
].
extra notNil ifTrue:[
nextSym := symbolicCodeArray at:symIndex.
(extra == #number) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
self appendSignedByte:index
] ifFalse:[ (extra == #number16) ifTrue:[
index := nextSym.
symIndex := symIndex + 2.
self appendSignedWord:index
] ifFalse:[ (extra == #unsigned16) ifTrue:[
index := nextSym.
symIndex := symIndex + 2.
self appendWord:index
] ifFalse:[ (extra == #index) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
self appendByte:index
] ifFalse:[ (extra == #lit) ifTrue:[
index := self addLiteral:nextSym.
symIndex := symIndex + 1.
self appendByte:index
] ifFalse:[ (extra == #speciallit) ifTrue:[
index := self addLiteral:nextSym.
index > 255 ifTrue:[
self parseError:'too many globals (' ,
(symbolicCodeArray at:symIndex) ,
' index=' , index printString ,
') in method - please simplify'.
^ #Error
].
symIndex := symIndex + 1.
self appendByte:index.
] ifFalse:[ (extra == #speciallitS) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
self appendByte:index.
] ifFalse:[ (extra == #speciallitL) ifTrue:[
index := nextSym.
symIndex := symIndex + 2.
self appendWord:index.
] ifFalse:[ (extra == #offset) ifTrue:[
relocInfo at:symIndex put:codeIndex.
self addReloc:symIndex.
symIndex := symIndex + 1.
self appendByte:0
] ifFalse:[ (extra == #indexLevel) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
self appendByte:index.
level := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:level
] ifFalse:[ (extra == #offsetNvarNarg) ifTrue:[
relocInfo at:symIndex put:codeIndex.
self addReloc:symIndex.
symIndex := symIndex + 1.
self appendEmptyByte.
nvars := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:nvars.
level := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:level
] ifFalse:[ (extra == #absoffset) ifTrue:[
relocInfo at:symIndex put:codeIndex.
self addReloc:symIndex.
addr := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:(addr bitAnd:16rFF).
self appendByte:((addr bitShift:-8) bitAnd:16rFF).
] ifFalse:[ (extra == #absoffsetNvarNarg) ifTrue:[
relocInfo at:symIndex put:codeIndex.
self addReloc:symIndex.
addr := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:(addr bitAnd:16rFF).
self appendByte:((addr bitShift:-8) bitAnd:16rFF).
nvars := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:nvars.
level := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:level
] ifFalse:[ (extra == #special) ifTrue:[
((codeSymbol == #send)
or:[codeSymbol == #sendSelf
or:[codeSymbol == #superSend
or:[codeSymbol == #hereSend]]]) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
nargs := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:nargs.
self appendByte:index.
(codeSymbol == #superSend
or:[codeSymbol == #hereSend]) ifTrue:[
index := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:index
].
stackDelta := nargs negated.
codeSymbol == #sendSelf ifTrue:[
stackDelta := stackDelta + 1
]
] ifFalse:[ (codeSymbol == #sendDrop) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
nargs := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:nargs.
self appendByte:index.
stackDelta := (nargs + 1) negated
]]
] ifFalse:[ (extra == #specialL) ifTrue:[
((codeSymbol == #sendL)
or:[codeSymbol == #sendSelfL
or:[codeSymbol == #superSendL
or:[codeSymbol == #hereSendL]]]) ifTrue:[
index := nextSym.
symIndex := symIndex + 2.
nargs := symbolicCodeArray at:symIndex.
symIndex := symIndex + 1.
self appendByte:nargs.
self appendWord:index.
(codeSymbol == #superSendL
or:[codeSymbol == #hereSendL]) ifTrue:[
index := symbolicCodeArray at:symIndex.
symIndex := symIndex + 2.
self appendWord:index.
].
stackDelta := nargs negated.
codeSymbol == #sendSelfL ifTrue:[
stackDelta := stackDelta + 1
]
]
] ifFalse:[ (extra == #specialSend) ifTrue:[
index := nextSym.
symIndex := symIndex + 1.
self appendByte:index.
] ifFalse:[
"/ self halt:'internal error'
]]]]]]]]]]]]]]]]
].
stackDepth := stackDepth + stackDelta.
(stackDepth > maxStackDepth) ifTrue:[
maxStackDepth := stackDepth
]
].
relocInfo at:symIndex put:codeIndex.
needRetry ifFalse:[
"
now relocate - returns true if ok, false if we have to do it again
(when short jumps have been changed to long jumps)
"
relocList notNil ifTrue:[
needRetry := (self relocateWith:symbolicCodeArray relocInfo:relocInfo) not.
"
if returned with false, a relative jump was made into
an absolute jump - need to start over with one more byte space
"
needRetry ifTrue:[
relocList := nil.
codeSize := codeSize + 1.
]
]
] ifTrue:[
'Compiler [info]: compiling again ...' infoPrintCR.
]
].
"code printNL."
^ errorFlag
"Modified: 3.9.1995 / 12:59:43 / claus"
"Modified: 10.1.1997 / 15:17:51 / cg"
!
genSymbolicCode
"traverse the parse-tree producing symbolicCode - return the codeArray"
|codeStream code thisStatement lastStatement|
litArray := nil.
codeStream := WriteStream on:(OrderedCollection new:100).
thisStatement := tree.
[thisStatement notNil] whileTrue:[
lastStatement := thisStatement.
thisStatement codeForSideEffectOn:codeStream inBlock:nil for:self.
thisStatement := thisStatement nextStatement
].
(lastStatement isNil or:[lastStatement isReturnNode not])
ifTrue:[
"not a return - add retSelf"
"
if the last statement was a send for side-effect,
replace the previous drop by a retSelf.
In this case we have to keep an extra retSelf bacause
it could be a jump target.
"
(lastStatement notNil
and:[(code := codeStream contents) notNil
and:[code size > 0
and:[code last == #drop]]]) ifTrue:[
codeStream backStep.
codeStream nextPut:#retSelf
].
codeStream nextPut:#retSelf
].
^ codeStream contents
"Modified: 15.8.1996 / 17:35:02 / stefan"
!
hasLineNumber:sel
"return true, if special send code needs lineNr"
(sel == #==) ifTrue:[^ false].
(sel == #~~) ifTrue:[^ false].
(sel == #class) ifTrue:[^ false].
(sel == #isNil) ifTrue:[^ false].
(sel == #notNil) ifTrue:[^ false].
^ true
!
isBuiltIn1ArgSelector:sel forReceiver:receiver
"return true, if selector sel is built-in.
(i.e. there is a single bytecode for it)"
(sel == #at:) ifTrue:[^ true].
(sel == #value:) ifTrue:[^ true].
(sel == #bitAnd:) ifTrue:[^ true].
(sel == #bitOr:) ifTrue:[^ true].
(sel == #new:) ifTrue:[^ true].
(sel == #basicNew:) ifTrue:[
"/ this one is critical - some redefine it
receiver isGlobal ifTrue:[
(#('String' 'ByteArray' 'Array'
'Point' 'Rectangle' 'Object')
includes:receiver name) ifTrue:[^ true].
].
].
^ false
"Created: 17.4.1996 / 22:33:13 / cg"
"Modified: 4.6.1997 / 12:24:18 / cg"
!
isBuiltIn2ArgSelector:sel forReceiver:receiver
"return true, if selector sel is built-in.
(i.e. there is a single bytecode for it)"
(sel == #at:put:) ifTrue:[^ true].
^ false
"Created: 17.4.1996 / 22:33:16 / cg"
!
isBuiltInBinarySelector:sel forReceiver:receiver
"return true, if binary selector sel is built-in.
(i.e. there is a single bytecode for it)"
sel == #== ifTrue:[^ true].
sel == #~~ ifTrue:[^ true].
sel == #= ifTrue:[^ true].
sel == #~= ifTrue:[^ true].
sel == #+ ifTrue:[^ true].
sel == #- ifTrue:[^ true].
sel == #< ifTrue:[^ true].
sel == #<= ifTrue:[^ true].
sel == #> ifTrue:[^ true].
sel == #>= ifTrue:[^ true].
sel == #* ifTrue:[^ true].
sel == #& ifTrue:[^ true].
sel == #| ifTrue:[^ true].
^ false
"Created: 17.4.1996 / 22:34:27 / cg"
"Modified: 4.6.1997 / 12:24:00 / cg"
!
isBuiltInUnarySelector:sel forReceiver:receiver
"return true, if unary selector sel is built-in.
(i.e. there is a single bytecode for it)"
(sel == #value) ifTrue:[^ true].
(sel == #class) ifTrue:[^ true].
(sel == #size) ifTrue:[^ true].
(sel == #isNil) ifTrue:[^ true].
(sel == #notNil) ifTrue:[^ true].
(sel == #not) ifTrue:[^ true].
(sel == #new) ifTrue:[^ true].
(sel == #basicNew) ifTrue:[
"/ this one is critical - some redefine it
receiver isGlobal ifTrue:[
(#('String' 'ByteArray' 'Array'
'Point' 'Rectangle' 'Object')
includes:receiver name) ifTrue:[^ true].
].
].
^ false
"Created: 17.4.1996 / 22:32:16 / cg"
"Modified: 4.6.1997 / 12:23:30 / cg"
!
moveGlobalsToFront
"move all global-literals to the front of the literal array.
This may be the last chance to compile the method, since
for globals, the maximum literal index is 255 - while for normal
literals its a stress-less 65535"
litArray isNil ifTrue:[
^ self error:'oops compiler botch'.
].
litArray sort:[:a :b | "a < b -> #(a b)"
(a isMemberOf:Symbol) ifFalse:[false]
ifTrue:[
(b isMemberOf:Symbol) ifFalse:[true]
ifTrue:[
(a at:1) isUppercase ifFalse:[false]
ifTrue:[
(b at:1) isUppercase ifFalse:[true]
ifTrue:[a < b].
]
]
]
].
"
#(#A #c #B #D #E #a #b #F)
sort:[:a :b |
(a isMemberOf:Symbol) ifFalse:[false]
ifTrue:[
(b isMemberOf:Symbol) ifFalse:[true]
ifTrue:[
(a at:1) isUppercase ifFalse:[false]
ifTrue:[
(b at:1) isUppercase ifFalse:[true]
ifTrue:[(a < b)].
]
]
]
].
"
!
relocateWith:symbolicCodeArray relocInfo:relocInfo
"helper for genByteCodeFrom - relocate code using relocInfo.
if relocation fails badly (due to long relative jumps) patch
symbolicCode to use absolute jumps instead and return false
(genByteCodeFrom will then try again). Otherwise return true.
Also, on the fly, jumps to jumps and jumps to return are handled."
|delta "{Class: SmallInteger }"
codePos "{Class: SmallInteger }"
opCodePos "{Class: SmallInteger }"
codeOffset "{Class: SmallInteger }"
symOffset
opcode "{Class: SmallInteger }"
dstOpcode jumpTarget
jumpCode deleteSet|
deleteSet := OrderedCollection new.
relocList do:[:sIndex |
"have to relocate symCode at sIndex ..."
symOffset := symbolicCodeArray at:sIndex. "the target in the symbolic code"
codePos := relocInfo at:sIndex. "position of the offet in byte code"
codeOffset := relocInfo at:symOffset. "position of the target in byte code"
delta := codeOffset - codePos - 1.
opCodePos := codePos - 1.
opcode := codeBytes at:opCodePos.
(opcode between:190 and:199) ifTrue:[
"an absolute jump/makeBlock"
codeBytes at:codePos put:(codeOffset bitAnd:16rFF).
codeBytes at:(codePos + 1) put:(codeOffset bitShift:-8)
] ifFalse:[
"get jump-code from long and vlong codes"
(opcode between:50 and:59) ifFalse:[
(opcode between:60 and:69) ifTrue:[
opcode := opcode - 10
] ifFalse:[
(opcode between:70 and:79) ifTrue:[
opcode := opcode - 20
] ifFalse:[
self error:'invalid code to relocate'
]
].
].
"optimize jump to return and jump to jump"
(opcode == 54) ifTrue:[
"a jump"
dstOpcode := symbolicCodeArray at:symOffset.
(#(retSelf retTop retNil retTrue retFalse ret0 "blockRetTop") includes:dstOpcode) ifTrue:[
"a jump to a return - put in the return instead jump"
symbolicCodeArray at:(sIndex - 1) put:dstOpcode.
symbolicCodeArray at:sIndex put:dstOpcode.
codeBytes at:opCodePos put:(self byteCodeFor:dstOpcode).
delta := 0.
deleteSet add:sIndex.
"
'jump to return at: ' print. (sIndex - 1) printNL.
"
] ifFalse:[
(dstOpcode == #jump) ifTrue:[
"jump to jump to be done soon"
jumpTarget := symbolicCodeArray at:(symOffset + 1).
"
'jump to jump at: ' print. (sIndex - 1) print.
' newTarget:' print. jumpTarget printNL.
"
symbolicCodeArray at:sIndex put:jumpTarget.
symOffset := jumpTarget.
codeOffset := relocInfo at:symOffset.
delta := codeOffset - codePos - 1.
"continue with new delta"
]
]
].
(#(50 51 52 53 56 57 58 59) includes:opcode) ifTrue:[
"a conditional jump"
dstOpcode := symbolicCodeArray at:symOffset.
(dstOpcode == #jump) ifTrue:[
"conditional jump to unconditional jump"
jumpTarget := symbolicCodeArray at:(symOffset + 1).
"
'cond jump to jump at: ' print. (sIndex - 1) print.
' newTarget:' print. jumpTarget printNL.
"
symbolicCodeArray at:sIndex put:jumpTarget.
symOffset := jumpTarget.
codeOffset := relocInfo at:symOffset.
delta := codeOffset - codePos - 1.
"continue with new delta"
].
].
(delta >= 0) ifTrue:[
(delta > 127) ifTrue:[
(opcode between:50 and:59) ifFalse:[
self error:'invalid code to relocate'
] ifTrue:[
(delta > 255) ifTrue:[
"change jmp into vljmp ..."
codeBytes at:opCodePos put:(opcode + 20).
delta := delta - 256
] ifFalse:[
"change jmp into ljmp ..."
codeBytes at:opCodePos put:(opcode + 10).
delta := delta - 128
].
(delta > 127) ifTrue:[
"change symbolic into a jump absolute and fail"
jumpCode := symbolicCodeArray at:(sIndex - 1).
symbolicCodeArray at:(sIndex - 1) put:(self absJumpFromJump:jumpCode).
symbolicCodeArray at:sIndex put:symOffset.
"
'change short into abs jump' printNL.
"
deleteSet do:[:d | relocList remove:d].
^ false
]
].
].
codeBytes at:codePos put:delta
] ifFalse:[
(delta < -128) ifTrue:[
(opcode between:50 and:59) ifFalse:[
self error:'invalid code to relocate'
] ifTrue:[
(delta < -256) ifTrue:[
"change jmp into vljmp ..."
codeBytes at:opCodePos put:(opcode + 20).
delta := delta + 256
] ifFalse:[
"change jmp into ljmp ..."
codeBytes at:opCodePos put:(opcode + 10).
delta := delta + 128
].
(delta < -128) ifTrue:[
"change symbolic into a jump absolute and fail"
jumpCode := symbolicCodeArray at:(sIndex - 1).
symbolicCodeArray at:(sIndex - 1) put:(self absJumpFromJump:jumpCode).
symbolicCodeArray at:sIndex put:symOffset.
"
'change short into abs jump' printNL.
"
deleteSet do:[:d | relocList remove:d].
^ false
]
]
].
codeBytes at:codePos put:(256 + delta)
]
]
].
(errorFlag == #Error) ifTrue:[
self error:'relocation range error'
].
^ true
!
specialGlobalCodeFor:aSymbol
"codeExtension for globals,
which can be accessed by specialGlobal opCode"
|idx|
idx := self specialGlobals identityIndexOf:aSymbol ifAbsent:nil.
idx isNil ifTrue:[^ idx].
^ idx - 1.
"Modified: 4.6.1997 / 12:31:22 / cg"
!
specialGlobals
"list of globals which can be accessed by specialGlobal opCode;
adding any here requires a new VM (i.e. you cannot change it)"
^ #(
#Array "/ 0
#String "/ 1
#FloatArray "/ 2
#DoubleArray "/ 3
#Point "/ 4
#Symbol "/ 5
#Smalltalk "/ 6
#Processor "/ 7
#SmallInteger "/ 8
#Character "/ 9
#Float "/ 10
#Process "/ 11
#Set "/ 12
#IdentitySet "/ 13
#Dictionary "/ 14
#IdentityDictionary "/ 15
#Sempahore "/ 16
#OrderedCollection "/ 17
)
"Created: 4.6.1997 / 12:17:47 / cg"
"Modified: 4.6.1997 / 12:31:35 / cg"
!
specialSendCodeFor:sel
"return the codeExtension for sends,
which can be performed by specialSend opCode"
|idx|
idx := self specialSends identityIndexOf:sel ifAbsent:nil.
idx isNil ifTrue:[^ idx].
^ idx - 1.
"Modified: 4.6.1997 / 12:31:08 / cg"
!
specialSends
"list of selectors which can be sent by specialSend opCode;
adding any here requires a new VM (i.e. you cannot change it)"
^ #(
#top "/ 0
#bottom "/ 1
#left "/ 2
#right "/ 3
#x "/ 4
#y "/ 5
#width "/ 6
#height "/ 7
#origin "/ 8
#extent "/ 9
#asInteger "/ 10
#rounded "/ 11
#next "/ 12
#peek "/ 13
)
"Created: 4.6.1997 / 12:20:28 / cg"
"Modified: 4.6.1997 / 12:31:56 / cg"
! !
!ByteCodeCompiler methodsFor:'code generation helpers'!
addTempVar
"add a temporary variable; return its position (1-based).
Used when a block with args/locals is inlined."
numTemp isNil ifTrue:[numTemp := maxNumTemp := 0].
numTemp := numTemp + 1.
maxNumTemp := maxNumTemp max:numTemp.
^ numTemp + methodVars size
"Modified: 26.6.1997 / 10:22:23 / cg"
!
removeTempVar
"remove a temporary variable"
numTemp := numTemp - 1
"Created: 25.6.1997 / 14:03:00 / cg"
"Modified: 25.6.1997 / 15:06:10 / cg"
! !
!ByteCodeCompiler methodsFor:'machine code generation'!
compileToMachineCode:aString forClass:aClass inCategory:cat
notifying:requestor install:install skipIfSame:skipIfSame silent:silent
"this is called to compile primitive code.
This is EXPERIMENTAL and going to be changed to raise an error,
an redefined in subclasses which can do it (either by direct compilation, or by calling
the external stc do do it.
For a description of the arguments, see compile:forClass....."
|stFileName stream handle address stcFlags cFlags
command oFileName cFileName
initName newMethod ok status className sep class stcPath ccPath
errorStream errorMessages eMsg m supers mP moduleFileName dummyHandle|
(mP := STCModulePath asFilename) exists ifFalse:[
mP makeDirectory
].
(mP isDirectory
and:[mP isReadable
and:[mP isWritable]]) ifFalse:[
self parseError:('no access to tempDir: ' , mP pathName) position:1.
^ #CannotLoad
].
ObjectFileLoader isNil ifTrue:[^ #CannotLoad].
STCCompilation == #never ifTrue:[^ #CannotLoad].
(stcPath := self class incrementalStcPath) isNil ifTrue:[
self parseError:'no stc compiler available - cannot create machine code' position:1.
^ #CannotLoad
].
(ccPath := self class ccPath) isNil ifTrue:[
self parseError:'no cc compiler available - cannot create machine code' position:1.
^ #CannotLoad
].
"/ generate a unique name, consisting of my processID and a sequence number
"/ the processId is added to allow filein of modules from different
"/ lifes
SequenceNumber isNil ifTrue:[
SequenceNumber := 0.
].
SequenceNumber := SequenceNumber + 1.
initName := 'm_' , OperatingSystem getProcessId printString, '_' , SequenceNumber printString.
stFileName := './' , initName , '.st'.
stream := stFileName asFilename writeStream.
stream isNil ifTrue:[
self parseError:'cannot create temporary sourcefile for compilation'.
^ #CannotLoad
].
[
sep := stream class chunkSeparator.
class := aClass.
class isMeta ifTrue:[
class := aClass soleInstance
].
supers := class allSuperclasses.
supers notNil ifTrue:[
supers reverseDo:[:cls|
cls ~~ Object ifTrue:[
cls isLoaded ifFalse:[
stream close.
^ #CannotLoad
].
cls fileOutDefinitionOn:stream.
stream nextPut:sep; cr.
]
]
].
class fileOutDefinitionOn:stream.
stream nextPut:sep; cr.
class privateClassesSorted do:[:aPrivateClass |
aPrivateClass fileOutDefinitionOn:stream.
stream nextPut:sep; cr.
].
class fileOutPrimitiveDefinitionsOn:stream.
stream nextPut:sep.
className := class name.
stream nextPutAll:className.
aClass isMeta ifTrue:[
stream nextPutAll:' class'.
].
stream nextPutAll:' methodsFor:'''; nextPutAll:cat; nextPutAll:''''.
stream nextPut:sep; cr.
stream nextPutLine:'"{ Line: 0 }"';
nextChunkPut:aString;
space; nextPut:sep.
stream close.
"
call stc to compile it
"
oFileName := './' , initName , '.o'.
cFileName := './' , initName , '.c'.
oFileName asFilename delete.
cFileName asFilename delete.
stcFlags := '-commonSymbols +sharedLibCode +newIncremental -E:errorOutput -N' , initName .
cFlags := OperatingSystem getOSDefine.
cFlags isNil ifTrue:[
cFlags := ''
].
STCCompilationDefines notNil ifTrue:[
cFlags := cFlags , ' ' , STCCompilationDefines
].
STCCompilationIncludes notNil ifTrue:[
stcFlags := STCCompilationIncludes , ' ' , stcFlags.
cFlags := cFlags , ' ' , STCCompilationIncludes.
].
STCCompilationOptions notNil ifTrue:[
stcFlags := STCCompilationOptions , ' ' , stcFlags
].
CCCompilationOptions notNil ifTrue:[
cFlags := cFlags , ' ' , CCCompilationOptions
].
command := stcPath , ' ' , stcFlags , ' -C ' , stFileName.
"/ 'executing: ' infoPrint. command infoPrintCR.
errorStream := 'errorOutput' asFilename writeStream.
self activityNotification:'compiling (stc)'.
ok := OperatingSystem
executeCommand:command
inputFrom:nil
outputTo:errorStream
errorTo:errorStream
onError:[:stat|
status := stat.
false
].
cFileName asFilename exists ifTrue:[
ok ifFalse:[
'Compiler [info]: oops - system says it failed - but c-file is there ...' infoPrintCR.
ok := true
]
] ifFalse:[
ok := false
].
ok ifTrue:[
"/ now compile to machine code
command := ccPath , ' ' , cFlags , ' -c ' , cFileName.
"/ 'executing: ' infoPrint. command infoPrintCR.
self activityNotification:'compiling (cc)'.
ok := OperatingSystem
executeCommand:command
inputFrom:nil
outputTo:errorStream
errorTo:errorStream
onError:[:stat|
status := stat.
false
].
oFileName asFilename exists ifTrue:[
ok ifFalse:[
'Compiler [info]: system says it failed - but o-file is there ...' infoPrintCR.
ok := true
]
] ifFalse:[
ok := false
].
"for debugging - leave c intermediate"
STCKeepCIntermediate == true ifFalse:[
OperatingSystem removeFile:cFileName.
].
].
ok ifFalse:[
(status notNil and:[status couldNotExecute]) ifTrue:[
eMsg := 'oops, no STC - cannot create machine code'
] ifFalse:[
errorStream := 'errorOutput' asFilename readStream.
errorStream notNil ifTrue:[
errorMessages := errorStream contents.
errorMessages notNil ifTrue:[
errorMessages := errorMessages asStringCollection.
errorMessages size > 20 ifTrue:[
errorMessages := (errorMessages copyTo:20) copyWith:'... more messages skipped'
].
"/ errorMessages := errorMessages collect:[:line |
"/ (line startsWith:(stFileName , ':')) ifTrue:[
"/ 'Line: ' , (line copyFrom:(stFileName size + 2))
"/ ] ifFalse:[
"/ line
"/ ]
"/ ].
errorMessages := errorMessages asString
].
].
errorMessages isNil ifTrue:[
errorMessages := ''
].
errorMessages isEmpty ifTrue:[
eMsg := 'STC / CC error during compilation:\\unspecified error'
] ifFalse:[
eMsg := 'STC / CC error during compilation:\\',errorMessages
].
eMsg := eMsg withCRs
].
'errorOutput' asFilename remove.
self activityNotification:'compilation failed'.
self parseError:eMsg position:1.
OperatingSystem removeFile:oFileName.
OperatingSystem removeFile:'errorOutput'.
self activityNotification:''.
^ #Error
].
self activityNotification:''.
OperatingSystem removeFile:'errorOutput'.
(ObjectFileLoader notNil
and:[ObjectFileLoader canLoadObjectFiles]) ifFalse:[
self parseError:'no dynamic load configured - cannot load machine code' position:1.
OperatingSystem removeFile:cFileName.
OperatingSystem removeFile:oFileName.
^ #CannotLoad
].
"
if required, make a shared or otherwise loadable object file for it
"
self activityNotification:'linking'.
oFileName := ObjectFileLoader createLoadableObjectFor:initName.
oFileName isNil ifTrue:[
"/ something went wrong
self parseError:(ObjectFileLoader lastError) position:1.
^ #CannotLoad
].
oFileName asFilename exists ifFalse:[
OperatingSystem removeFile:oFileName.
self parseError:'link failed - cannot create machine code' position:1.
^ #CannotLoad
].
"
move it into the modules directory
"
moduleFileName := STCModulePath , '/' , initName , '.' , (oFileName asFilename suffix).
oFileName asFilename moveTo:moduleFileName.
oFileName := moduleFileName.
"
load the objectfile
"
self activityNotification:'loading'.
handle := ObjectFileLoader loadDynamicObject:moduleFileName.
handle isNil ifTrue:[
OperatingSystem removeFile:moduleFileName.
self parseError:'dynamic load failed - cannot create machine code' position:1.
^ #CannotLoad
].
"/ ('handle is ' , handle printString) infoPrintCR.
"/ try libs to resolve symbols.
address := ObjectFileLoader getFunction:'__' , initName , '_Init' from:handle.
address isNil ifTrue:[
address := ObjectFileLoader getFunction:'_' , initName , '_Init' from:handle.
address isNil ifTrue:[
(ObjectFileLoader hasUndefinedSymbolsIn:handle) ifTrue:[
ObjectFileLoader searchedLibraries do:[:libName |
(ObjectFileLoader hasUndefinedSymbolsIn:handle) ifTrue:[
Transcript showCR:' ... trying ' , libName , ' to resolve undefined symbols ...'.
dummyHandle := Array new:4.
dummyHandle := ObjectFileLoader primLoadDynamicObject:libName into:dummyHandle.
dummyHandle isNil ifTrue:[
Transcript showCR:' ... load of library ' , libName , ' failed.'.
]
]
].
(ObjectFileLoader hasUndefinedSymbolsIn:handle) isNil ifTrue:[
Transcript showCR:('LOADER: still undefined symbols in ',initName,'.').
].
].
]
].
address := ObjectFileLoader getFunction:'__' , initName , '_Init' from:handle.
address isNil ifTrue:[
address := ObjectFileLoader getFunction:'_' , initName , '_Init' from:handle.
address isNil ifTrue:[
(ObjectFileLoader getListOfUndefinedSymbolsFrom:handle) size > 0 ifTrue:[
ObjectFileLoader listUndefinedSymbolsIn:handle.
eMsg := 'undefined symbols in primitive code'.
] ifFalse:[
eMsg := initName , '_Init() lookup failed'
].
ObjectFileLoader unloadDynamicObject:handle.
OperatingSystem removeFile:moduleFileName.
self parseError:(eMsg , ' - cannot create machine code') position:1.
^ #CannotLoad
]
].
"/ ('init at ' , address printString) infoPrintCR.
m := ObjectFileLoader
callInitFunctionAt:address
specialInit:true
forceOld:true
interruptable:false
argument:2
identifyAs:handle
returnsObject:true.
"
did it work ?
"
newMethod := aClass compiledMethodAt:selector.
newMethod notNil ifTrue:[
m ~~ newMethod ifTrue:[
'Compiler [warning]: loaded method installed itself in another class' errorPrintCR.
].
newMethod source:aString.
newMethod package:(Class packageQuerySignal raise).
"/ Project notNil ifTrue:[
"/ newMethod package:(Project currentPackageName)
"/ ].
"/ aClass updateRevisionString.
aClass addChangeRecordForMethod:newMethod.
(silent or:[Smalltalk silentLoading == true]) ifFalse:[
Transcript showCR:(' compiled: ', className,' ',selector,' - machine code')
].
ObjectMemory flushCaches.
handle method:newMethod.
"/ check for obsolete loaded objects and unload them
ObjectFileLoader loadedObjectHandlesDo:[:anotherHandle |
anotherHandle isMethodHandle ifTrue:[
anotherHandle method isNil ifTrue:[
ObjectFileLoader unloadObjectFile:anotherHandle pathName.
OperatingSystem removeFile:anotherHandle pathName.
]
]
].
^ newMethod.
].
OperatingSystem removeFile:moduleFileName.
self parseError:'dynamic load failed' position:1.
^ #CannotLoad
] valueNowOrOnUnwindDo:[
STCKeepSTIntermediate ifFalse:[
OperatingSystem removeFile:stFileName.
].
].
"
|m|
Object subclass:#Test
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'tests'.
m := ByteCodeCompiler
compile:'foo ^ ''hello'''
forClass:Test
inCategory:'tests'
notifying:nil
install:false
skipIfSame:false.
m inspect
"
"
|m|
Object subclass:#Test
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'tests'.
m := ByteCodeCompiler
compileToMachineCode:'foo %{ RETURN (_MKSMALLINT(1)); %}'
forClass:Test
inCategory:'tests'
notifying:nil
install:false
skipIfSame:false
silent:false.
m inspect
"
"Modified: 14.9.1995 / 22:33:04 / claus"
"Modified: 16.4.1997 / 18:50:54 / cg"
"Modified: 11.8.1997 / 12:25:49 / stefan"
!
trappingStubMethodFor:aString inCategory:cat
"return a stub method which traps and reports an error whenever
called."
|newMethod|
newMethod := Method new:(litArray size).
litArray notNil ifTrue:[
newMethod literals:litArray
].
newMethod makeUncompiled.
newMethod numberOfVars:(self numberOfMethodVars).
newMethod numberOfArgs:(self numberOfMethodArgs).
newMethod source:aString.
newMethod category:cat.
newMethod package:(Class packageQuerySignal raise).
"/ Project notNil ifTrue:[
"/ newMethod package:(Project currentPackageName)
"/ ].
^ newMethod
"Modified: 24.6.1996 / 12:28:24 / stefan"
"Modified: 1.8.1997 / 00:27:32 / cg"
! !
!ByteCodeCompiler methodsFor:'queries'!
numberOfTempVars
"return the number of additional temporary variables which
were created from inlined blocks (valid after parsing)"
^ maxNumTemp ? 0
"Created: 25.6.1997 / 13:54:29 / cg"
"Modified: 25.6.1997 / 15:21:34 / cg"
! !
!ByteCodeCompiler class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libcomp/Attic/BCompiler.st,v 1.129 1998-02-25 14:12:54 cg Exp $'
! !
ByteCodeCompiler initialize!