mirror of https://github.com/A2osX/A2osX.git
801 lines
14 KiB
Plaintext
801 lines
14 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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CORE.Init lda #PUSHD.STACK
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tay
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sta (pdata),y
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lda #CODE.STACK
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tay
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sta (pdata),y
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.9 rts
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*--------------------------------------
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CORE.FUNCRESET >LDA.G hFunctions
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beq .8
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>SYSCALL SListFree
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>STZ.G hFunctions
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.8 rts
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*--------------------------------------
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* stack-6,7 old InputBuf
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* stack-4,5 old InputBufPtr
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* stack-3 old ARGC
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* stack-2 old ARGV
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* stack-1 new hCode
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* stack
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*--------------------------------------
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CORE.Load.YAX stx LOAD.hCode X = Code to Execute
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>SYSCALL ArgVDup Y,A = ArgV
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bcs .9
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stx LOAD.hArgs X = hARGV
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sta LOAD.ArgCnt A = ARGC
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lda #8
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jsr STK.Check
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bcs .9
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>LDYA ZPInputBuf
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jsr STK.PushYA
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jsr STK.PushInputBufPtr
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ldy #S.PS.ARGC
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lda (pPS),y
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jsr STK.Push old ARGC
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ldy #S.PS.hARGV
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lda (pPS),y
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jsr STK.Push old hARGV
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ldy #S.PS.ARGC
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lda LOAD.ArgCnt new ARGC
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dec Skip ARG0 in count
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sta (pPS),y
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iny #S.PS.hARGV
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lda LOAD.hArgs
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sta (pPS),y new hARGV
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lda LOAD.hCode new code
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jsr STK.Push
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* lda LOAD.hCode
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>SYSCALL GetMemPtr
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>STYA ZPInputBuf
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>STYA ZPInputBufPtr
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* clc
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.9 rts
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*--------------------------------------
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* http://heirloom.sourceforge.net/sh/sh.1.html
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*--------------------------------------
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* CORE.Run
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* Input : ZPInputBufPtr (String)
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* Tokenize ZPArgVBuf
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* :LOOP
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* if CmdSep=| :
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* set hStdIn = hStdOut
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* set hStdOut = Std
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* GetCmd from line until | or EOL
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* if CmdSep=| :
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* create PIPE
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* set hStdOut -> PIPE
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* CORE.Exec &
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* :LOOP
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* else CORE.Exec
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*--------------------------------------
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* SET VAR = `cmd args`, FOR VAR IN `cmd args`
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* create PIPE
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* set hStdOut -> PIPE
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* CORE.Exec `cmd args` &
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* set READMODE
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* set hStdIn = hStdOut
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* set hStdOut = Std
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*--------------------------------------
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CORE.Run.EOF jsr STK.Pull
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bcs *
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cmp #$C0+C.. check CALL . CL context
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beq .1
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cmp #$C0+C.CALL
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beq .1
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cmp #$C0+C.CLEXEC
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bne .9
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.1 jsr CMD.EXIT.FILE
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jsr IO.Reset
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lda #0
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sec
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jmp CORE.Run.Exit Ending 0, CS,A=0
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.9 lda #E.UNEXPEOF
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sec
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jmp CORE.Run.Exit
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CORE.Run.RTS rts
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*--------------------------------------
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CORE.Run jsr IO.Reset
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>LDYAI 256
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>SYSCALL GetMem
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bcs CORE.Run.RTS
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>STYA ZPArgVBuf
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txa
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>STA.G CORE.hArgVBuf
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lda #bState.PipeIn
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trb bState
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CORE.Run.1 >LDYA ZPInputBufPtr Save Actual ptr for looping
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>STYA ZPInputCmdPtr
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>LDYA ZPArgVBuf Reset ArgV Buffer
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>STYA ZPArgVBufPtr
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lda #0
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sta (ZPArgVBuf)
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sec
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ror CORE.IntCmd assume external
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lda #S.PS.F.HOLD
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sta CORE.PSFlags
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jsr CORE.GetCharNB
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bcs CORE.Run.EOF
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cmp #C.CR empty line ?
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bne .33
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jsr CORE.GetNextChar skip CR...
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bra .8
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.33 cmp #'#' commented line?
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bne CORE.Run.3
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.12 jsr CORE.SkipLine
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.8 lda #0
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clc
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.9 jmp CORE.Run.Exit EOL, CS,A=0
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*--------------------------------------
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CORE.Run.3 >LDA.G hAliases
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beq CORE.Run.4
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>PUSHA
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>PUSHW ZPInputBufPtr
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>PUSHWZ ScopeID
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>SYSCALL SListLookup
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bcs CORE.Run.4
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>STYA ZPTmpW Save KeyID
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txa
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jsr CORE.SkipCharsA
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ldy #hAliases
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jsr CORE.SListGetData
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bcs .9
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jsr CORE.PushBufX
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bcc CORE.Run.3
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.9 rts
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*--------------------------------------
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CORE.Run.4 >LDYA L.CMD internal command ?
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jsr CORE.LookupInputBuf
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bcc .41
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.40 jsr CORE.ArgV.Add external cmd, go check context
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bra .42
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.41 stx CORE.IntCmd
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jsr CORE.SkipCharsA
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.42 jsr STK.Get
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bcs CORE.Run.5 no particular context, exec...
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tax
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lda CORE.IntCmd
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bmi .45
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and #$3F
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cmp #C.SWITCH SWITCH....FI ?
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bcs CORE.Run.5
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.45 txa
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bpl .43 context is FALSE, skip line
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asl
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bmi CORE.Run.5 parent context is true, exec
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.43 jsr CORE.GetCharNB
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bcs .44 EOF
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cmp #C.CR
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beq .44
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cmp #';' TODO ";"
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beq .44
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jsr CORE.GetNextChar
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bra .43
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.44 jsr CORE.GetNextCharNB Skip EoL char
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clc
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jmp CORE.Run.Exit
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*--------------------------------------
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CORE.Run.5 jsr CORE.GetCharNB
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bcs .8 Nothing to skip
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jsr CORE.IsEndCmd
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bcc .3
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>LDYA L.CORE.IO
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jsr CORE.LookupInputBuf
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bcs .2
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jsr CORE.SkipCharsA
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jsr CORE.IO.JMP
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bcc CORE.Run.5
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bcs .9
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.2 jsr CORE.ArgV.Add
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bcc CORE.Run.5
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.9 lda #E.SYN
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sec
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jmp CORE.Run.Exit
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.3 cmp #C.CR
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beq .7
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cmp #';'
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beq .7
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cmp #'|'
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bne .5
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jsr CORE.GetNextCharNB '|'
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lda #bState.PipeOut
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tsb bState
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bra CORE.Run.6
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.5 cmp #'&'
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bne .9
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jsr CORE.GetNextChar Skip '&'
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bcs .50
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cmp #'&'
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beq .6 &&
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.50 lda #S.PS.F.HOLD Run in the background...
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trb CORE.PSFlags
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bra .8
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.6 jsr CORE.GetNextChar Skip '&&'
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jsr CORE.ExecCmd
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bcc .60
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jsr CORE.SkipLine
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clc
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lda #0
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jmp CORE.Run.Exit
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.60 jmp CORE.Run.1
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.7 jsr CORE.GetNextCharNB Skip EoL char
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.8 lda #bState.PipeOut
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trb bState
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*--------------------------------------
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CORE.Run.6 lda bState
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bit #bState.PipeIn
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beq .1
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jsr IO.Pipe.In
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bcs CORE.Run.Exit
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lda bState
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.1 bit #bState.PipeOut
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beq .7
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jsr IO.Pipe.Out
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bcs CORE.Run.Exit
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lda #S.PS.F.HOLD Run in the background...
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trb CORE.PSFlags
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lda #S.PS.F.CLOSEONX ...and close PIPE OUT on exit
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tsb CORE.PSFlags
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jsr CORE.ExecCmd
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php
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pha
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lda CORE.IntCmd $ff if external
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eor #$80
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asl if cc Was external...
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jsr IO.Reset.OutC restore Output, NO close if EXTERNAL
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lda bState
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and #bState.PipeIn
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beq .6
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jsr IO.Pop.In restore Input
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.6 pla
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plp
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bcs CORE.Run.Exit
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lda #bState.PipeIn
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tsb bState
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jmp CORE.Run.1 Loop with Pipe IN
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.7 jsr CORE.ExecCmd
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*--------------------------------------
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CORE.Run.Exit php
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pha
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>LDA.G CORE.hArgVBuf
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beq .1
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>SYSCALL FreeMem
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>STZ.G CORE.hArgVBuf
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.1 pla
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plp
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rts
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*--------------------------------------
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* Input : ZPArgVBuf
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*--------------------------------------
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CORE.ExecCmd lda #0
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sta (ZPArgVBufPtr)
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>LDYA ZPArgVBuf
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>STYA ZPArgVBufPtr
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lda CORE.IntCmd
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bmi CORE.ExecExtCmd
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asl
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tax
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jmp (J.CMD,x)
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*--------------------------------------
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CORE.ExecExtCmd >PUSHW ZPArgVBuf
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>PUSHB CORE.PSFlags
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>SYSCALL ExecV
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bcs .9
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tax CPID
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lda CORE.PSFlags
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and #S.PS.F.HOLD
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bne .4
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lda bState
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bit #bState.PipeOut
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bne .4
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ldy #S.PS.hStdErr
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lda (pPS),y
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>PUSHA
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>PUSHW L.MSG.PID
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txa
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>PUSHA
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>PUSHBI 1
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>SYSCALL FPrintF
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rts
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.4 >SLEEP Suspend this PID
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sec
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ldy #S.PS.RC CPID will update S.PS.RC
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lda (pPS),y
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bne .9
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.8 clc
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.9 rts
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*--------------------------------------
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CORE.SkipLine jsr CORE.GetNextCharNB
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bcs .8 EOF
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cmp #C.CR EOL
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bne CORE.SkipLine
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jsr CORE.GetNextChar skip CR...
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.8 rts
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*--------------------------------------
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* search ZPInputBufPtr/ZPArgVBufPtr in Y,A table
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*--------------------------------------
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CORE.LookupInputBuf
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sec
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.HS 90 BCC
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CORE.LookupArgVBuf
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clc
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>STYA ZPPtr1 Keywords table
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>LDYA ZPArgVBufPtr
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bcc CORE.Lookup
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>LDYA ZPInputBufPtr
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CORE.Lookup >STYA ZPPtr2
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ldx #0
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.1 ldy #$ff
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.2 jsr .7 get next valid char in src text
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bcs .3
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.20 jsr ToUpperCase
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eor (ZPPtr1),y match table char ?
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asl compare only 7 bits
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bne .4 no match...get next table keyword
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bcc .2 not last char in this keyword
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jsr .7 next char in text...
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bcc .4 valid....failed
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.8 tya Keyword Len
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clc
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rts
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.3 dey
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lda (ZPPtr1),y was last char in this keyword ?
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bmi .8
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iny
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.41 jsr IncPtr1 skip chars to next keyword
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.4 lda (ZPPtr1)
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bpl .41
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jsr IncPtr1
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.6 inx
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lda (ZPPtr1) Array Ending 0, lookup failed
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bne .1
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lda #E.SYN
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.9 sec
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rts
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.7 iny
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lda (ZPPtr2),y Get Src text char...
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beq .9 end of text
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jsr CORE.IsSpaceOrEndCmd
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bcc .9 end of valid chars
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clc
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CORE.ArgV.Add.RTS
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rts
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*--------------------------------------
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* ArgV
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*--------------------------------------
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CORE.ArgV.Add lda #C.SPACE
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sta ZPTmpW
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ldy #0
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jsr CORE.GetCharNB
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bcs CORE.ArgV.Add.RTS
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cmp #'"'
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bne .10
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sta ZPTmpW
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bra .1
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.10 cmp #'('
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bne .11
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ldx #')'
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stx ZPTmpW
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bra .12
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.11 cmp #'`'
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bne .12
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sta ZPTmpW
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.12 sta (ZPArgVBufPtr),y
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iny
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.1 jsr CORE.GetNextChar
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bcs .7
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.2 cmp ZPTmpW
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bne .3
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jsr CORE.GetNextChar
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bra .7
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.3 ldx ZPTmpW
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cpx #C.SPACE
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bne .6
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jsr CORE.IsEndCmd
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bcc .7
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.6 sta (ZPArgVBufPtr),y
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iny
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jsr CORE.GetNextChar
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bcc .2
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.7 lda #0
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sta (ZPArgVBufPtr),y
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>LDYA ZPArgVBufPtr
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>STYA ZPArgVBufPrev
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>PUSHYA
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>PUSHW ZPArgVBufPtr
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>SYSCALL Expand
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bcs .9
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tya
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beq .8 Empty string....
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sec
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adc ZPArgVBufPtr
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sta ZPArgVBufPtr
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bcc .8
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inc ZPArgVBufPtr+1
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clc
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.8
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.9 rts
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*--------------------------------------
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CORE.ArgV.Next lda (ZPArgVBufPtr)
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beq .8
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>LDYA ZPArgVBufPtr
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>STYA ZPArgVBufPrev
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.1 jsr CORE.ArgV.NextChar
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lda (ZPArgVBufPtr)
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bne .1
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jsr CORE.ArgV.NextChar
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lda (ZPArgVBufPtr)
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.8 rts
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*--------------------------------------
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CORE.ArgV.NextChar
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inc ZPArgVBufPtr
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bne .8
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inc ZPArgVBufPtr+1
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.8 rts
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*--------------------------------------
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* IO
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*--------------------------------------
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CORE.IO.JMP txa
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asl
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tax
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jmp (J.CORE.IO,x)
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CORE.IO.IN lda #O.RDONLY+O.TEXT
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jsr CORE.IO.Open
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bcs CORE.IO.RTS
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jmp IO.Set.In
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CORE.IO.OUTA
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CORE.IO.1OUTA lda #O.WRONLY+O.APPEND+O.CREATE+O.TEXT
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bra CORE.IO.OUT.1
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CORE.IO.OUT
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CORE.IO.1OUT lda #O.WRONLY+O.TRUNC+O.CREATE+O.TEXT
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CORE.IO.OUT.1 jsr CORE.IO.Open
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bcs CORE.IO.RTS
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jmp IO.Set.Out
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CORE.IO.2OUTA lda #O.WRONLY+O.APPEND+O.CREATE+O.TEXT
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bra CORE.IO.2OUT.1
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CORE.IO.2OUT lda #O.WRONLY+O.TRUNC+O.CREATE+O.TEXT
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CORE.IO.2OUT.1 jsr CORE.IO.Open
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bcs CORE.IO.RTS
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jmp IO.Set.Err
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*--------------------------------------
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CORE.IO.Open pha Open Mode
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jsr CORE.GetCharNB
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bcs .9 no arg left....
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jsr CORE.ArgV.Add Get Filename
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>LDYA ZPArgVBufPrev
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>STYA ZPArgVBufPtr Discard filename
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plx
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jmp IO.FOpenYAX
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.9 pla
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lda #E.SYN
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sec
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CORE.IO.RTS rts
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*--------------------------------------
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* Input Buffer
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*--------------------------------------
|
||
CORE.IsSpaceOrEndCmd
|
||
cmp #C.SPACE
|
||
beq CORE.IsEndCmd.8
|
||
|
||
CORE.IsEndCmd cmp #';'
|
||
beq CORE.IsEndCmd.8
|
||
|
||
cmp #C.CR
|
||
beq CORE.IsEndCmd.8
|
||
|
||
cmp #'&'
|
||
beq CORE.IsEndCmd.8
|
||
|
||
cmp #'|'
|
||
beq CORE.IsEndCmd.8
|
||
|
||
sec
|
||
rts
|
||
|
||
CORE.IsEndCmd.8 clc
|
||
rts
|
||
*--------------------------------------
|
||
CORE.GetCharNB jsr CORE.GetChar
|
||
bcs CORE.GetNextCharNB.RTS
|
||
|
||
jsr CORE.CheckCharNB
|
||
bcc CORE.GetNextCharNB.RTS
|
||
*--------------------------------------
|
||
CORE.GetNextCharNB
|
||
jsr CORE.GetNextChar
|
||
bcs CORE.GetNextCharNB.RTS
|
||
|
||
jsr CORE.CheckCharNB
|
||
bcs CORE.GetNextCharNB
|
||
CORE.GetNextCharNB.RTS
|
||
rts
|
||
*--------------------------------------
|
||
CORE.CheckCharNB
|
||
cmp #C.SPACE
|
||
beq .9
|
||
|
||
cmp #C.LF
|
||
beq .9
|
||
|
||
cmp #C.TAB
|
||
beq .9
|
||
|
||
clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
CORE.GetNextChar
|
||
inc ZPInputBufPtr
|
||
bne CORE.GetChar
|
||
|
||
inc ZPInputBufPtr+1
|
||
*--------------------------------------
|
||
CORE.GetChar clc
|
||
lda (ZPInputBufPtr)
|
||
bne .8
|
||
|
||
jsr CORE.PopBuf
|
||
bcc CORE.GetChar
|
||
|
||
lda #0
|
||
|
||
.8 rts
|
||
*--------------------------------------
|
||
CORE.SkipCharsA clc
|
||
adc ZPInputBufPtr
|
||
sta ZPInputBufPtr
|
||
bcc .8
|
||
|
||
inc ZPInputBufPtr+1
|
||
|
||
.8 rts
|
||
*--------------------------------------
|
||
CORE.PushBufX >LDA.G CODE.STACK
|
||
cmp #CODE.STACK.MAX*5
|
||
beq .9
|
||
|
||
inc
|
||
tay
|
||
|
||
phx next hBuffer
|
||
|
||
ldx #0
|
||
|
||
.1 lda ZPInputBuf,x ZPInputBuf
|
||
sta (pData),y
|
||
inx ZPInputBufPtr
|
||
iny
|
||
cpx #6 ZPInputCmdPtr
|
||
bne .1
|
||
|
||
pla
|
||
pha
|
||
sta (pData),y
|
||
|
||
tya
|
||
>STA.G CODE.STACK
|
||
|
||
pla
|
||
>SYSCALL GetMemPtr
|
||
>STYA ZPInputBuf
|
||
>STYA ZPInputBufPtr
|
||
|
||
* clc
|
||
rts
|
||
|
||
.9 lda #E.STKOVERFLOW
|
||
* sec
|
||
rts
|
||
*--------------------------------------
|
||
CORE.PopBuf phy
|
||
|
||
>LDA.G CODE.STACK
|
||
cmp #CODE.STACK
|
||
beq .9
|
||
|
||
tay
|
||
lda (pData),y
|
||
phy
|
||
>SYSCALL FreeMem
|
||
ply
|
||
|
||
ldx #5
|
||
dey
|
||
|
||
.1 lda (pData),y ZPInputBuf
|
||
sta ZPInputBuf,x
|
||
dey ZPInputBufPtr
|
||
dex
|
||
bpl .1 ZPInputCmdPtr
|
||
|
||
tya
|
||
>STA.G CODE.STACK
|
||
|
||
ply
|
||
|
||
* clc
|
||
rts
|
||
|
||
.9 ply
|
||
|
||
lda #E.STACKERROR
|
||
* sec
|
||
rts
|
||
*--------------------------------------
|
||
CORE.SListGetData
|
||
>PUSHB (pData),y
|
||
>PUSHW ZPTmpW KeyID
|
||
>PUSHWZ Allocate
|
||
>PUSHWI $ffff All
|
||
>PUSHWZ from Start
|
||
>SYSCALL SListGetData X = hMem
|
||
rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE usr/src/bin/sh.s.core
|
||
LOAD usr/src/bin/sh.s
|
||
ASM
|