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A2osX/BIN/ASM.S.SRC.txt

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Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
.LIST OFF
.OP 65C02
*---------------------------------------
SRC.OpenFileA sta hFileName
>SYSCALL SYS.GetMemPtrA
>STYA ZPPtr1
ldy #1
lda (ZPPtr1),y
cmp #'/'
beq .1
>PUSHB hFileName
ldy #S.PS.hPREFIX
lda (pPs),y
>PUSHA
>SYSCALL SYS.PStrCat
sta hFileName
>SYSCALL SYS.GetMemPtrA
>STYA ZPPtr1
.1 >PUSHW ZPPtr1
>PUSHW L.MSG.SRC.FILE
>LIBCALL hLIBSTR,LIBSTR.PRINTF
ldy #SRC.COUNT
lda (pData),y
cmp #SRC.IN.DEPTH.MAX
bne .10
lda #ERR.SRC.TOO.MANY.IN
sec
rts
.10 lda hFileName
>SYSCALL SYS.MLIOpenA
bcs .99
pha
ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hREFNUMS
tay
pla
sta (pData),y
ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hBUFFERS
tay
txa
sta (pData),y
lda hFileName
>SYSCALL SYS.MLIGetFileInfoA
bcs .99
>STYA ZPQuickPtr1
ldy #1
lda (ZPQuickPtr1),y
tax
ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hFILETYPES
tay
txa
sta (pData),y
cmp #$FA S-C/BAS?
beq .8
cmp #$04 TXT ?
bne .98
>PUSHBI $0D Line separator for TXT file
>PUSHBI $FF
ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hREFNUMS
tay
lda (pData),y
>PUSHA
>SYSCALL SYS.MLINewLine
bcs .99
.8 ldy #SRC.COUNT
lda (pData),y
inc
sta (pData),y
clc
rts
.98 lda #ERR.SRC.INV.TYPE
.99 sec
rts
*---------------------------------------
SRC.ReadLine ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hFILETYPES-1
tay
lda (pData),y
bmi .10
>PUSHWI 256
>PUSHWI TmpBuffer256
jsr SRC.ReadFromFile
bcs .19
lda #0 replace ending $0D with $00
sta TmpBuffer256,y
.19 rts
.10 >PUSHWI 3
>PUSHW L.SRC.Buffer
jsr SRC.ReadFromFile
bcs .9
lda SRC.Buffer+1
sta SRC.LINENUM
lda SRC.Buffer+2
sta SRC.LINENUM+1
lda SRC.Buffer LEN
sec
sbc #3
bcc .9 LEN should be at least 3
tay
lda #0
>PUSHYA
>PUSHW L.SRC.BUFFER
jsr SRC.ReadFromFile
ldy #0
ldx #0
.1 lda SRC.Buffer,y
bmi .2
sta TmpBuffer256,x
beq .8 Ending 00
inx
beq .99
iny
bne .1
bra .99
.2 cmp #$C0 REPEAT char?
bne .5
iny
beq .99
lda SRC.Buffer,y
iny
beq .99
.3 pha
lda SRC.Buffer,y
sta TmpBuffer256,x
pla
inx
beq .99
dec
bne .3
iny
bne .1
bra .99
.5 and #$3F Compute blank count
.6 pha
lda #$20
sta TmpBuffer256,x
pla
inx
beq .99
dec
bne .6
iny
bne .1
bra .99
.8 clc
.9 rts
.99 lda #ERR.LINE.TOO.LONG
sec
rts
*--------------------------------------
SRC.ReadFromFile ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hREFNUMS-1
tay
lda (pData),y
>PUSHA
>SYSCALL SYS.MLIRead
bcs .9
tax $100 byte transfered ?
beq .9
lda #ERR.LINE.TOO.LONG
sec
.9 rts
*---------------------------------------
SRC.FileClose ldy #SRC.COUNT
lda (pData),y
beq .8
clc
adc #SRC.hREFNUMS-1
tay
lda (pData),y
>SYSCALL SYS.MLICloseA
ldy #SRC.COUNT
lda (pData),y
clc
adc #SRC.hBUFFERS-1
tay
lda (pData),y
>SYSCALL SYS.FreeMemA
ldy #SRC.COUNT
lda (pData),y
dec
sta (pData),y
.8 clc
rts
*---------------------------------------
SRC.ParseLine stz SRC.Label.Flags
stz SRC.BufPtr
Work In Progress (ASM)
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ldx TmpBuffer256
beq SRC.ParseLine.Skip
Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
Work In Progress (ASM)
2015-10-09 15:53:30 +00:00
cpx #'*' Comment?
beq SRC.ParseLine.Skip
cpx #';' Comment?
beq SRC.ParseLine.Skip
Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
Work In Progress (ASM)
2015-10-09 15:53:30 +00:00
cpx #' ' no label...go scan dir/opcode
beq .4
Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
Work In Progress (ASM)
2015-10-09 15:53:30 +00:00
ldy #ASM.MA.ON Macro learning mode ?
lda (pData),y
bpl .1 go Label check
Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
Work In Progress (ASM)
2015-10-09 15:53:30 +00:00
.10 jsr SRC.GetChar skip label
beq SRC.ParseLine.skip
cmp #' '
bne .10
bra .4
Work In Progress (ASM)
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Work In Progress (ASM)
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.1 cpx #'.' local symbol?
bne .2
jsr SRC.ParseLine.SymL
bra .3
Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
Work In Progress (ASM)
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.2 jsr SRC.ParseLine.SymG
.3 bcs SRC.ParseLine.Err
.4 jsr SRC.GetCharNB Scan for an Opcode...
Work In Progress (ASM)
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beq SRC.ParseLine.Ok
cmp #'.'
Work In Progress (ASM)
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bne .5
Work In Progress (ASM)
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Work In Progress (ASM)
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jsr SRC.ParseLine.Dir
bcs SRC.ParseLine.Err
Work In Progress (ASM)
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bra SRC.ParseLine.Ok
Work In Progress (ASM)
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.5 jsr SRC.ParseLine.OpCode
bcs SRC.ParseLine.Err
Work In Progress (ASM)
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SRC.ParseLine.Ok lda SRC.Label.Flags
Work In Progress (ASM)
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beq .1
jsr SYM.Add
.1 ldy #ASM.MA.ON Macro learning mode ?
lda (pData),y
bpl .2
Work In Progress (ASM)
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Work In Progress (ASM)
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ldy #ASM.PASS If Pass#2, ignore
lda (pData),y
bne SRC.ParseLine.skip
jsr SRC.ParseLine.Macro
Work In Progress (ASM)
2015-10-06 16:14:48 +00:00
Work In Progress (ASM)
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.2
SRC.ParseLine.skip clc
Work In Progress (ASM)
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rts
SRC.ParseLine.Err1 lda #ERR.INVALID.LABEL
SRC.ParseLine.Err sec
rts
*---------------------------------------
Work In Progress (ASM)
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SRC.ParseLine.SymP jsr SRC.GetChar
beq SRC.ParseLine.SymE
jsr SRC.GetDecimal
bcs SRC.ParseLine.SymR
jmp SYM.AddPrivate
*---------------------------------------
SRC.ParseLine.SymL jsr SRC.GetChar
beq SRC.ParseLine.SymE
jsr SRC.GetDecimal
bcs SRC.ParseLine.SymR
jmp SYM.AddLocal
*---------------------------------------
SRC.ParseLine.SymG jsr SYM.ClearLocal
jsr SRC.GetLabel
bcs SRC.ParseLine.SymE
inc SRC.Label.Flags Remember to Add Label
ldx #3 Makes Current Label = PC for now
ldy #ASM.PC
lda (pdata),y
.1 sta SRC.LabelValue,x
dey
dex
bpl .1
clc
rts
SRC.ParseLine.SymE lda #ERR.INVALID.LABEL
sec
SRC.ParseLine.SymR rts
*---------------------------------------
Work In Progress (ASM)
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SRC.ParseLine.Dir >LDYA L.T.DIRECTIVES
jsr SRC.GetKeyword
bcs .9
jmp (J.DIRECTIVES,x)
.9 lda #ERR.INVALID.DIRECTIVE
sec
rts
*---------------------------------------
Work In Progress (ASM)
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SRC.ParseLine.OpCode
clc
rts
*---------------------------------------
Work In Progress (ASM)
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SRC.ParseLine.Macro
clc
rts
*---------------------------------------
Work In Progress (ASM)
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SRC.PrintLine bcs .8 if CS, unconditional
Work In Progress (ASM)
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ldy #ASM.MA.ON
lda (pData),y
bpl .1
ldy #ASM.LI.CON
lda (pData),y
bpl .9
bmi .8
.1 ldy #ASM.LI.ON
lda (pData),y
bpl .9
.8 >PUSHWI TmpBuffer256
>PUSHW SRC.LINENUM
>PUSHW L.MSG.SRCLINE
>LIBCALL hLIBSTR,LIBSTR.PRINTF
.9 rts
*---------------------------------------
SRC.GetDecimal stz SRC.ACC+1
stz SRC.ACC+2
stz SRC.ACC+3
jsr SRC.GetChar
beq .99
jsr SRC.IsDigit10
bcs .99
and #$0F
sta SRC.ACC
.1 jsr SRC.GetChar
beq .8
cmp #' '
beq .8
jsr SRC.IsDigit10
bcs .99
and #$0F
pha
jsr SRC.ACC10
pla
bcs .9
clc
adc SRC.ACC
sta SRC.ACC
bcc .1
inc SRC.ACC+1
bne .1
inc SRC.ACC+2
bne .1
inc SRC.ACC+3
bne .1
.9 lda #ERR.VAL.TOO.BIG
sec
rts
.8 clc
rts
.99 lda #ERR.SYNTAX.ERROR
sec
rts
*---------------------------------------
SRC.GetLabel jsr SRC.GetCharUC
beq .9
jsr SRC.IsLetter
bcs .9
sta SRC.Label
ldy #1
.1 jsr SRC.GetCharUC
beq .8
cmp #' '
beq .8
cmp #'.'
beq .2
jsr SRC.IsLetterOrDigit
bcs .9
.2 sta SRC.Label,y
iny
cpy #SRC.LABEL.MAXLEN
bne .1 if equ Carry is set
.9 sec
rts
.8 lda #0
sta SRC.Label,y
clc
rts
*---------------------------------------
SRC.GetKeyword >STYA ZPPtr1
jsr SRC.GetArg
bcs .9
stz SRC.Keyword.ID
ldy #0
.3 lda (ZPPtr1),y
beq .9
cmp SRC.Buffer
bne .6
phy
ldx #0
.4 iny
inx
lda (ZPPtr1),y
cmp SRC.Buffer,x
bne .5
cpx SRC.Buffer
bne .4
ply
ldx SRC.Keyword.ID
clc
rts
.5 ply
.6 tya
sec Add keyword Len+1
adc (ZPPtr1),y
tay
inc SRC.Keyword.ID
inc SRC.Keyword.ID
bra .3
.9 sec
rts
*---------------------------------------
SRC.GetArg jsr SRC.GetCharUC
beq .9
sta SRC.Buffer+1
ldy #1
.1 jsr SRC.GetCharUC
beq .2
cmp #' '
beq .2
cmp #','
iny
sta SRC.Buffer,y
bra .1
.2 sty SRC.Buffer
clc
rts
.9 sec
rts
*---------------------------------------
SRC.IsLetterOrDigit jsr SRC.IsDigit10
bcc SRC.IsLetterRTS
*---------------------------------------
SRC.IsLetter cmp #'A'
bcc .9
cmp #'['
bcc SRC.IsLetterRTS
cmp #'a'
bcc .9
cmp #'{'
rts CC if lowercase
.9 sec
SRC.IsLetterRTS rts
*---------------------------------------
SRC.IsDigit10 cmp #'0'
bcc .9
cmp #':'
rts cc if ok, cs if not
.9 sec
rts
*---------------------------------------
Work In Progress (ASM)
2015-10-09 15:53:30 +00:00
SRC.GetCharNB jsr SRC.GetCharUC
Work In Progress (ASM)
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beq .9
cmp #' '
beq SRC.GetCharNB
.9 rts
*---------------------------------------
SRC.GetCharUC jsr SRC.GetChar
beq .9
cmp #'a'
bcc .9
cmp #'{'
bcs .9
eor #$20 to Uppercase
.9 rts
*---------------------------------------
SRC.GetChar ldx SRC.BufPtr
lda TmpBuffer256,x
inc SRC.BufPtr
and #$7f
rts
*---------------------------------------
SRC.ACC10 lda SRC.ACC ACC*2-> ACC & ACCTMP
asl
sta SRC.ACC
sta SRC.ACCTMP
lda SRC.ACC+1
rol
sta SRC.ACC+1
sta SRC.ACCTMP+1
lda SRC.ACC+2
rol
sta SRC.ACC+2
sta SRC.ACCTMP+2
lda SRC.ACC+3
rol
sta SRC.ACC+3
sta SRC.ACCTMP+3
bcs .9
ldx #1
.1 asl SRC.ACC ACC=ACC*8
rol SRC.ACC+1
rol SRC.ACC+2
rol SRC.ACC+3
bcs .9
dex
bne .1
lda SRC.ACC CC from ROL SRC.ACC+3
adc SRC.ACCTMP
sta SRC.ACC
lda SRC.ACC+1
adc SRC.ACCTMP+1
sta SRC.ACC+1
lda SRC.ACC+2
adc SRC.ACCTMP+2
sta SRC.ACC+2
lda SRC.ACC+3
adc SRC.ACCTMP+3
sta SRC.ACC+3 CS if overflow
.9 rts
*---------------------------------------
MAN
SAVE BIN/ASM.S.SRC
LOAD BIN/ASM.S
ASM
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