Apple-2-SW/A2osX
1
0
Fork 0
mirror of https://github.com/A2osX/A2osX.git synced 2024-11-26 13:49:18 +00:00
Code Issues Projects Releases Wiki Activity
939745ccbf
A2osX/SYS/KERNEL.S.ENV.txt
Rémy GIBERT cc7157abed Kernel 0.9.2
2018-06-28 17:26:34 +02:00

657 lines
12 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
*/--------------------------------------
* # ExpandStr
* **In:**
* Y,A = PTR to String to Expand (C-String)
* **Out:**
* X = hMem to Expanded String (C-String)
* Y,A = PTR to Expanded String
*\--------------------------------------
K.ExpandStr stz .88+1 Reset Intermediate string...
.1 >STYA ZPPtr2
stz ENV.BufLen init Expanded String len=0
stz .82+1 No var found yet
stz ENV.bNoExp Reset no expand flag
ldy #0
.10 stz ENV.VarLen
stz .23+1 reset In var flag
.11 lda (ZPPtr2),y End of CSTR?
beq .8
iny
cmp #'''
bne .21
lda ENV.bNoExp
eor #$ff
sta ENV.bNoExp toggle flag
bra .11
.21 bit ENV.bNoExp
bpl .23
.22 jsr ENV.AddAToBuf
bra .11
.23 ldx #$ff SELF MODIFIED already in a var?
bne .3 yes...
cmp #'$' no, found one ?
bne .22 no, store...
sta .82+1 Toggle Expanded flag
sta .23+1 Set In Var flag
bra .11 skip this char
.3 cmp #'{' we are in var, "{" after "$"?
bne .31
ldx ENV.VarLen No char in var yet ?
beq .11 normal, "${" syntax is ok,skip
bne .5 not allowed char in varname, end of var
.31 cmp #'}' end of var?
beq .50
jsr MEM.IsIDValid _,.,a-z,A-Z,0-9 ?
bcc .32 yes, add to varname
ldx ENV.VarLen
bne .5 varname has already chars...end of var
inx must be a $? or ?x.....go expand
stx ENV.VarLen
sta ENV.VarName
bra .51 go Expand....
.32 ldx ENV.VarLen
cpx #16
beq .11 varname longer than 15....ignore
sta ENV.VarName,x
inx
stx ENV.VarLen
bra .11
.5 dey last char was invalid...move back
.50 ldx ENV.VarLen
beq .52 var name is empty...start over
.51 stz ENV.VarName,x
phy save current index
jsr ENV.GetValue
ply restore index in string...
.52 jmp .10 reset start flag and continue
.8 ldx ENV.VarLen end of STR,are we in a var?
beq .80 no...exit...
stz ENV.VarName,x
jsr ENV.GetValue yes, expand and add to STR
.80 lda .88+1 working from our temp string ?
beq .81 no...
jsr K.FreeMem yes, discard....
.81 ldx ENV.BufLen
stz K.Buf256,x
>LDYAI K.Buf256
jsr K.NewStr
bcs .9
stx .88+1 save this as temp string, in case of recurse
.82 ldx #$ff SELF MODIFIED Did we expand something ?
beq .88
jmp .1 Yes, start over with hPStr
.88 ldx #$ff SELF MODIFIED
* or exit with Y,A from K.NewStrYA
.9 rts
*/--------------------------------------
* # FileSearch
* Search a file in the provided PATH list
* And return, if found, the full path to it.
* ## C
* `int filesearch ( char * filename, char * searchpath, char * fullpath, stat * filestat);`
* ## ASM
* **In:**
* `>PUSHWI filestat`
* `>PUSHWI fullpath`
* `>PUSHWI searchpath`
* `>LDYAI filename`
* **Out:**
* CC : success
* DstBuf = FilePath
* DstStat = S.STAT
* CS : not found
*\--------------------------------------
K.FileSearch pha
>PULLW K.FileSearch.SearchPath
>PULLW .2+1 DstBuf
>PULLW .4+1 DstStat
pla Y,A = filename
jsr K.FileSearch.YA
bcs .9
ldx #$ff
.1 inx
lda K.Buf256,x
.2 sta $ffff,x Self Modified
bne .1
ldx #S.STAT-1
.3 lda K.S.STAT,x
.4 sta $ffff,x Self Modified
dex
bpl .3
.9 rts
K.FileSearch.YA jsr K.ExpandStr Y,A = Search Path, Expand it
bcs .99
stx .98+1
>STYA .2+1 expanded search list ;
stz .1+1
.1 ldy #$0 Self Modified Index in Search list string
ldx #$0
.2 lda $ffff,y Self Modified, Search list string
beq .3 end of string, try it....
iny
cmp #';'
beq .3
sta K.Buf256,x
inx
bra .2
.3 txa
beq .98 String is empty....nothing to try
sty .1+1 save current index
ldy #$0
.4 lda $ffff,y Self Modified, Append Filename...
sta K.Buf256,x
beq .5
iny
inx
bra .4
.5 >PUSHWI K.S.STAT
>PUSHWI K.Buf256
>SYSCALL STAT -> BNK1
bcs .1 Failed...retry next path...
lda K.S.STAT+S.STAT.P.TYPE
cmp #S.FI.T.DIR Dir ?
beq .1
jsr .98 Discard Expanded hSrch list
clc
.99 rts
.98 lda #$ff SELF MODIFIED : Discard Expanded hSrch list
jsr K.FreeMem
lda #MLI.E.FNOTFND
sec
rts
*--------------------------------------
K.FileSearch.SearchPath .BS 2
*/--------------------------------------
* # PutEnv
* **In:**
* Y,A = PTR to String NAME=VALUE (C-String)
* **Out:**
*\--------------------------------------
K.PutEnv >STYA ZPPtr1 NAME=VALUE
ldy #0
.1 lda (ZPPtr1),y copy STR to K.Buf256
beq .9
cmp #'='
beq .2
sta K.Buf256,y
iny
bne .1
.2 lda #0
sta K.Buf256,y
tya
sec
adc ZPPtr1
sta ZPPtr2
lda ZPPtr1+1
adc #0
sta ZPPtr2+1
>LDYAI K.Buf256
>STYA ZPPtr1
bra K.SetEnv.I
.9 sec
rts
*/--------------------------------------
* # SetEnv
* **In:**
* PUSHW = PTR To Value (PSTR)
* PUSHW = PTR To Name (PSTR)
* **Out:**
*\--------------------------------------
K.SetEnv jsr MEM.PullP1P2 Ptr1=NAME,Ptr2=VALUE
K.SetEnv.I jsr K.UnsetEnv.I
jsr ENV.InitEnvP3 ZPPtr3 -> Env
ldy #0
ldx #0
.10 lda (ZPPtr3) End of ENV
beq .15
.11 iny Compute ENV size in X,Y
bne .12
inx
.12 inc ZPPtr3
bne .13
inc ZPPtr3+1
.13 lda (ZPPtr3) End of string
bne .11
iny
bne .14
inx
.14 inc ZPPtr3
bne .10
inc ZPPtr3+1
bra .10
.15 sty ZPPtr4
stx ZPPtr4+1
ldy #0
.16 lda (ZPPtr1),y
beq .17
iny
bne .16
.17 tya
sec
adc ZPPtr4
sta ZPPtr4
bcc .18
inc ZPPtr4+1
.18 ldy #0
.19 lda (ZPPtr2),y
beq .20
iny
bne .19
.20 tya
sec
adc ZPPtr4
tax
bcc .21
inc ZPPtr4+1
.21 cpx #K.ENV.SIZE
lda ZPPtr4+1
sbc /K.ENV.SIZE
bcs .99
ldy #$ff
.22 iny
lda (ZPPtr1),y
sta (ZPPtr3),y
bne .22
tya
sec
adc ZPPtr3
sta ZPPtr3
bcc .23
inc ZPPtr3+1
.23 ldy #$ff
.24 iny
lda (ZPPtr2),y
sta (ZPPtr3),y
bne .24
iny
sta (ZPPtr3),y don't forget array ending 0
clc
rts
.99 lda #K.E.ENVF
* sec
rts
*/--------------------------------------
* # GetEnv
* **In:**
* Y,A = PTR to NAME (PSTR)
* **Out:**
* CC : Y,A = PTR to VALUE (PSTR)
* CS : not found
*\--------------------------------------
K.GetEnv >STYA ZPPtr1
jsr ENV.FindVarP1
bcs .9
jsr ENV.NextEnvP3 Skip NAME
clc just in case ADC in NextEnvPtr1 disturb CC
.9 >LDYA ZPPtr3
rts
*/--------------------------------------
* # UnsetEnv
* **In:**
* Y,A = PTR To Name (PSTR)
* **Out:**
*\--------------------------------------
K.UnsetEnv >STYA ZPPtr1 Store VAR Name
K.UnsetEnv.I jsr ENV.FindVarP1
bcs K.UnsetEnv.I.8 not found, quit
jsr ENV.DelVarP3 Ptr3 -> ENVNAME
K.UnsetEnv.I.8 clc
K.UnsetEnv.I.9 rts
*--------------------------------------
* PRIVATE
*--------------------------------------
ENV.GetValue jsr ENV.ExpandSysVar
bcc K.UnsetEnv.I.9
>LDYAI ENV.VarName
jsr K.GetEnv
bcs K.UnsetEnv.I.9
*--------------------------------------
ENV.AddYAToBuf >STYA ZPPtr3
*--------------------------------------
ENV.AddP3ToBuf ldx ENV.BufLen
ldy #$ff
dex
.1 iny
inx
lda (ZPPtr3),y
sta K.Buf256,x
bne .1
stx ENV.BufLen
rts
*--------------------------------------
* ENV.ExpandSysVar
* In:
* ENV.VarLen,ENV.VarName
* Out:
* CC: Found
* Append VALUE to K.Buf256
* CS: Not Found
*--------------------------------------
ENV.ExpandSysVar
ldx ENV.VarLen
cpx #1 is name 1 char?
bne .9
lda ENV.VarName
jsr MEM.IsDigit $0...$9 ??
bcs .1
and #$0F
jsr K.GetArg
bcs K.UnsetEnv.I.8 Arg# is undefined, do not append anything
jmp ENV.AddYAToBuf
.1 ldx #ENV.SysVarsJmp-ENV.SysVars-1
.2 cmp ENV.SysVars,x
beq .3
dex
bpl .2
.9 sec
.99 rts
.3 txa
asl
tax
jmp (ENV.SysVarsJmp,x)
*--------------------------------------
ENV.SysVars .AS "*#?@$!"
*--------------------------------------
ENV.SysVarsJmp .DA ENV.SysVarsArgs
.DA ENV.SysVarsArgC
.DA ENV.SysVarsRC
.DA ENV.SysVarsPPID
.DA ENV.SysVarsPID
.DA ENV.SysVarsCPID
*--------------------------------------
ENV.SysVarsArgs lda #1
jsr K.GetArg
bcs .8
>STYA ZPPtr3
.1 lda (ZPPtr3)
beq .8
.2 jsr ENV.AddP3ToBuf
jsr ENV.NextEnvP3
lda (ZPPtr3)
beq .8
lda #' '
jsr ENV.AddAToBuf
bra .2
.8 clc
rts
*--------------------------------------
ENV.SysVarsArgC ldy #S.PS.ARGC
.HS 2C
ENV.SysVarsRC ldy #S.PS.RC
.HS 2C
ENV.SysVarsPPID ldy #S.PS.PPID
.HS 2C
ENV.SysVarsPID ldy #S.PS.PID
.HS 2C
ENV.SysVarsCPID ldy #S.PS.CPID
lda (pPS),y
stz .2+1
stz .3+1
ldx #8
sed
.1 asl
pha
.2 lda #$ff Self Modified
adc .2+1
sta .2+1
.3 lda #$ff Self Modified
adc .3+1
sta .3+1
pla
dex
bne .1
cld
lda .3+1
beq .4
jsr ENV.AddAToBuf30
.4 lda .2+1
pha
lsr
lsr
lsr
lsr
beq .5
jsr ENV.AddAToBuf30
.5 pla
and #$0f
.8 jsr ENV.AddAToBuf30
clc
rts
*--------------------------------------
* ENV.FindVarP1
* In:
* ZPPtr1 -> NAME
* Out:
* CC: Found
* ZPPtr1 -> NAME
* ZPPtr3 -> ENV.NAME
* CS: Not Found
* ZPPtr1 -> NAME
* ZPPtr3 -> PTR to Ending 0
*--------------------------------------
ENV.FindVarP1 jsr ENV.InitEnvP3 Store ENV
.1 lda (ZPPtr3)
beq .9 end of ENV
ldy #0
.2 lda (ZPPtr1),y
cmp (ZPPtr3),y
bne .3
ora #0
beq .8
iny
bne .2
.8 clc
rts
.3 jsr ENV.NextEnvP3 Skip NAME
jsr ENV.NextEnvP3 Skip VALUE
bra .1
.9 sec
rts
*--------------------------------------
* ENV.DelVarP3
* In:
* ZPPtr3 -> ENV.NAME to Discard
*--------------------------------------
ENV.DelVarP3 >LDYA ZPPtr3 save actual Ptr
>STYA ZPPtr4
jsr ENV.NextEnvP3 Skip current NAME....
jsr ENV.NextEnvP3 Skip current VALUE....
ldy #0
.1 lda (ZPPtr3),y Move back CSTRs...
.2 sta (ZPPtr4),y
beq .3 0 ended....
iny
bne .1
inc ZPPtr3+1
inc ZPPtr4+1
bra .1
.3 iny
bne .4
inc ZPPtr3+1
inc ZPPtr4+1
.4 lda (ZPPtr3),y
bne .2 Until array ending 0
sta (ZPPtr4),y
.8 rts
*--------------------------------------
ENV.InitEnvP3 ldy #S.PS.hENV
lda (pPs),y
jsr K.GetMemPtr
>STYA ZPPtr3 Store ENV
rts
*--------------------------------------
ENV.NextEnvP3 ldy #0
.1 lda (ZPPtr3),y
beq .2
iny
bne .1
.2 tya
sec
adc ZPPtr3
sta ZPPtr3
bcc .8
inc ZPPtr3+1
.8 rts
*--------------------------------------
ENV.AddAToBuf30 ora #$30
ENV.AddAToBuf ldx ENV.BufLen
sta K.Buf256,x
inc ENV.BufLen
rts
*--------------------------------------
ENV.BufLen .BS 1
ENV.bNoExp .BS 1
ENV.VarLen .BS 1
ENV.VarNamePtr .BS 2
ENV.VarName .BS 16
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SYS/KERNEL.S.ENV
LOAD /A2OSX.SRC/SYS/KERNEL.S
ASM
Reference in New Issue View Git Blame Copy Permalink