mirror of
https://github.com/A2osX/A2osX.git
synced 2024-12-02 05:49:24 +00:00
403 lines
6.8 KiB
Plaintext
403 lines
6.8 KiB
Plaintext
NEW
|
||
PREFIX
|
||
AUTO 4,1
|
||
*---------------------------------------
|
||
* EXP.Modifiers:
|
||
* # : 8b,Byte 1
|
||
* / : 8b,Byte 2
|
||
* ^ : 8b,Byte 3
|
||
* < : 24b,Byte 1,2,3
|
||
* > : 32b
|
||
*---------------------------------------
|
||
* Num Format : 0-9 -> decimal
|
||
* $ = Hex
|
||
* % = binary
|
||
* & = octal
|
||
* * = PC
|
||
*---------------------------------------
|
||
EXP.Eval.Missing
|
||
lda #ERR.MISSING.EXP
|
||
sec
|
||
rts
|
||
|
||
EXP.Eval >STZ.G EXP.Modifier
|
||
>STZ.G EXP.Prefix
|
||
>STZ.G EXP.Operator
|
||
|
||
jsr SRC.GetChar
|
||
bcs EXP.Eval.Missing
|
||
|
||
jsr SRC.IsMODReserved
|
||
bcs EXP.Eval.Next
|
||
|
||
txa
|
||
>STA.G EXP.Modifier
|
||
lda #'#'
|
||
>STA.G EXP.Prefix
|
||
|
||
EXP.Eval.Next0 jsr SRC.GetNextChar
|
||
|
||
EXP.Eval.Next lda #2
|
||
sta SRC.ACC.SIZE Default To WORD (2 bytes)
|
||
|
||
stz SRC.ACC
|
||
stz SRC.ACC+1
|
||
stz SRC.ACC+2
|
||
stz SRC.ACC+3
|
||
|
||
jsr SRC.GetChar
|
||
bcs EXP.Eval.Missing
|
||
|
||
cmp #'.' Local Label?
|
||
bne .12
|
||
|
||
jsr EXP.GetSymL
|
||
bcs .14
|
||
|
||
jmp EXP.EvalOperator
|
||
.14 rts
|
||
|
||
.12 cmp #'*'
|
||
bne .10
|
||
|
||
ldy #ASM.PC+3
|
||
ldx #3
|
||
|
||
.11 lda (pData),y
|
||
sta SRC.ACC,x
|
||
dey
|
||
dex
|
||
bpl .11
|
||
|
||
jsr SRC.GetNextChar
|
||
jmp EXP.EvalOperator
|
||
|
||
.10 jsr SRC.IsDigit10 Decimal constant ?
|
||
bcs .1
|
||
|
||
jsr SRC.GetDecimal
|
||
|
||
bcs EXP.EvalExitRTS
|
||
bra EXP.EvalOperator
|
||
|
||
.1 cmp #'$' Hex?
|
||
bne .2
|
||
|
||
jsr SRC.GetHex
|
||
|
||
bcs EXP.EvalExitRTS
|
||
bra EXP.EvalOperator
|
||
|
||
|
||
.2 cmp #'%' binary?
|
||
bne .3
|
||
|
||
jsr SRC.GetBinary
|
||
|
||
bcs EXP.EvalExitRTS
|
||
bra EXP.EvalOperator
|
||
|
||
|
||
.3 cmp #'&' octal?
|
||
bne .4
|
||
jsr SRC.GetOctal
|
||
|
||
bcs EXP.EvalExitRTS
|
||
bra EXP.EvalOperator
|
||
|
||
.4 cmp #'''
|
||
bne .43
|
||
jsr SRC.GetNextChar
|
||
bcs EXP.EvalExitSYN
|
||
|
||
jsr EXP.SetAccA
|
||
jsr SRC.GetNextChar
|
||
bcs EXP.EvalOperator
|
||
cmp #'''
|
||
bne EXP.EvalExitSYN
|
||
jsr SRC.GetNextChar
|
||
bra EXP.EvalOperator
|
||
|
||
.43 cmp #'"'
|
||
bne .42
|
||
jsr SRC.GetNextChar
|
||
bcs EXP.EvalExitSYN
|
||
ora #$80
|
||
jsr EXP.SetAccA
|
||
jsr SRC.GetNextChar
|
||
bcs EXP.EvalOperator
|
||
cmp #'"'
|
||
bne EXP.EvalExitSYN
|
||
jsr SRC.GetNextChar
|
||
bra EXP.EvalOperator
|
||
|
||
.42 jsr SRC.IsLetter Symbol ?
|
||
bcs EXP.EvalExitSYN
|
||
|
||
jsr EXP.GetSymG
|
||
bcs EXP.EvalExitUND
|
||
bra EXP.EvalOperator
|
||
|
||
EXP.EvalExitOK >LDA.G EXP.Modifier
|
||
beq .8
|
||
asl
|
||
tax
|
||
jmp (J.EXP.MOD-2,x)
|
||
|
||
.8 clc
|
||
EXP.EvalExitRTS rts
|
||
|
||
EXP.EvalExitSYN lda #ERR.SYNTAX.ERROR
|
||
sec
|
||
rts
|
||
|
||
EXP.EvalExitUND lda #ERR.UNDEF.SYMBOL
|
||
sec
|
||
rts
|
||
*---------------------------------------
|
||
EXP.EvalOperator
|
||
>LDA.G EXP.Operator
|
||
beq .7
|
||
|
||
jsr EXP.Compute
|
||
bcs EXP.EvalExitRTS
|
||
|
||
.7 jsr SRC.GetChar
|
||
bcs EXP.EvalExitOK
|
||
|
||
cmp #' '
|
||
beq EXP.EvalExitOK
|
||
|
||
jsr SRC.IsAMReserved
|
||
bcc EXP.EvalExitOK
|
||
|
||
jsr SRC.IsEXPReserved
|
||
bcs EXP.EvalExitSYN
|
||
txa
|
||
>STA.G EXP.Operator
|
||
|
||
ldx #4
|
||
|
||
.8 lda SRC.ACC.SIZE,x
|
||
sta SRC.ARG.SIZE,x
|
||
dex
|
||
bpl .8
|
||
|
||
jmp EXP.Eval.Next0
|
||
*---------------------------------------
|
||
EXP.GetSymL jsr SRC.GetNextChar
|
||
bcs .9
|
||
|
||
jsr SRC.GetDecimal
|
||
bcs EXP.EvalExitSYN
|
||
lda SRC.ACC+1
|
||
ora SRC.ACC+2
|
||
ora SRC.ACC+3
|
||
bne EXP.EvalExitSYN Max .255
|
||
lda SRC.ACC
|
||
beq EXP.EvalExitSYN .0 is not allowed
|
||
|
||
jsr SYM.LookupLocal
|
||
bcc .8
|
||
|
||
>LDA.G ASM.PASS pass#2?
|
||
bne EXP.EvalExitUND
|
||
lda #0 Mark ACC as pending
|
||
sta SRC.ACC.SIZE
|
||
clc
|
||
rts
|
||
|
||
.9 lda #ERR.SYNTAX.ERROR
|
||
sec
|
||
.8 rts
|
||
*---------------------------------------
|
||
EXP.GetSymG jsr SYM.LookupGlobal
|
||
bcs .2
|
||
|
||
jsr SYM.Lookup2Acc
|
||
|
||
clc
|
||
rts
|
||
|
||
.2 >LDA.G ASM.PASS pass#2?
|
||
bne EXP.EvalExitUND yes, undefined symbol
|
||
|
||
lda #0 Mark ACC as pending
|
||
sta SRC.ACC.SIZE
|
||
|
||
.3 jsr SRC.GetNextChar
|
||
bcs .8
|
||
|
||
jsr SRC.IsLetterOrDigit
|
||
bcc .3
|
||
cmp #'.'
|
||
beq .3
|
||
cmp #'_'
|
||
beq .3
|
||
|
||
.8 clc
|
||
rts
|
||
|
||
.99 lda #ERR.UNDEF.SYMBOL
|
||
sec
|
||
.9 rts
|
||
*---------------------------------------
|
||
EXP.MOD.8.3 lda SRC.ACC+2
|
||
bra EXP.MOD.8
|
||
EXP.MOD.8.2 lda SRC.ACC+1
|
||
EXP.MOD.8 sta SRC.ACC
|
||
EXP.MOD.8.1 lda #1
|
||
sta SRC.ACC.SIZE
|
||
clc
|
||
rts
|
||
EXP.MOD.24 lda #3
|
||
sta SRC.ACC.SIZE
|
||
clc
|
||
rts
|
||
EXP.MOD.32 lda #4
|
||
sta SRC.ACC.SIZE
|
||
clc
|
||
rts
|
||
*---------------------------------------
|
||
EXP.Compute ldx SRC.ACC.SIZE
|
||
beq .1
|
||
ldx SRC.ARG.SIZE
|
||
beq .1
|
||
|
||
asl
|
||
tax
|
||
jmp (J.EXP.OP-2,x)
|
||
|
||
.1 >LDA.G ASM.PASS
|
||
beq .8
|
||
|
||
lda #ERR.UNDEF.SYMBOL
|
||
sec
|
||
rts
|
||
|
||
.8 clc
|
||
rts
|
||
*---------------------------------------
|
||
EXP.OP.EOR ldx #3
|
||
|
||
.1 lda SRC.ARG,x
|
||
eor SRC.ACC,x
|
||
sta SRC.ACC,x
|
||
dex
|
||
bpl .1
|
||
rts
|
||
*---------------------------------------
|
||
EXP.OP.ORA ldx #3
|
||
|
||
.1 lda SRC.ARG,x
|
||
ora SRC.ACC,x
|
||
sta SRC.ACC,x
|
||
dex
|
||
bpl .1
|
||
rts
|
||
*---------------------------------------
|
||
EXP.OP.AND ldx #3
|
||
|
||
.1 lda SRC.ARG,x
|
||
and SRC.ACC,x
|
||
sta SRC.ACC,x
|
||
dex
|
||
bpl .1
|
||
rts
|
||
*---------------------------------------
|
||
EXP.OP.LOW jsr EXP.OP.SUB
|
||
|
||
lda #0
|
||
rol
|
||
|
||
jmp EXP.SetAccA
|
||
*---------------------------------------
|
||
EXP.OP.EQU ldx #0 ARG-ACC->ACC
|
||
ldy #4
|
||
|
||
clc il not Equals, return 0
|
||
|
||
.1 lda SRC.ARG,x
|
||
eor SRC.ACC,x
|
||
bne .2
|
||
inx
|
||
dey
|
||
bne .1
|
||
|
||
sec equals, return 1
|
||
|
||
.2 lda #0
|
||
rol
|
||
sta SRC.ACC
|
||
|
||
lda #1
|
||
sta SRC.ACC.SIZE
|
||
|
||
.9 rts
|
||
*---------------------------------------
|
||
EXP.OP.GRT jsr EXP.OP.SUB
|
||
|
||
lda #0
|
||
rol
|
||
eor #1
|
||
|
||
jmp EXP.SetAccA
|
||
*---------------------------------------
|
||
EXP.OP.ADD ldx #0 ARG-ACC->ACC
|
||
ldy #4
|
||
|
||
clc
|
||
|
||
.1 lda SRC.ARG,x
|
||
adc SRC.ACC,x
|
||
sta SRC.ACC,x
|
||
inx
|
||
dey
|
||
bne .1
|
||
|
||
bcc .8
|
||
|
||
lda #ERR.VAL.TOO.BIG
|
||
.8 rts
|
||
*---------------------------------------
|
||
EXP.OP.SUB ldx #0 ARG-ACC->ACC
|
||
ldy #4
|
||
|
||
sec
|
||
|
||
.1 lda SRC.ARG,x
|
||
sbc SRC.ACC,x
|
||
sta SRC.ACC,x
|
||
inx
|
||
dey
|
||
bne .1
|
||
|
||
bcs .8
|
||
|
||
lda #ERR.VAL.TOO.BIG
|
||
sec
|
||
rts
|
||
|
||
.8 clc
|
||
rts
|
||
*---------------------------------------
|
||
EXP.OP.MUL
|
||
*---------------------------------------
|
||
EXP.OP.DIV
|
||
clc
|
||
rts
|
||
*---------------------------------------
|
||
EXP.SetAccA sta SRC.ACC
|
||
stz SRC.ACC+1
|
||
stz SRC.ACC+2
|
||
stz SRC.ACC+3
|
||
lda #1
|
||
sta SRC.ACC.SIZE
|
||
clc
|
||
rts
|
||
*---------------------------------------
|
||
MAN
|
||
SAVE /A2OSX.BUILD/BIN/DEV/ASM.S.EXP
|
||
LOAD /A2OSX.BUILD/BIN/DEV/ASM.S
|
||
ASM
|