A2osX/SYS/KERNEL.S.FILE.txt

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PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
* For All SYS.xxxx calls, X = #SYSCall
* Must be kept in X before calling
* K.PFTCheck*
*--------------------------------------
* K.FOPEN
* In :
* PULLW = PATH (PSTR)
* PULLB = MODE
* SYS.FOPEN.R .EQ $01 if R and !exists -> ERROR
* SYS.FOPEN.W .EQ $02 if W and !exists -> CREATE
* SYS.FOPEN.A .EQ $04 Append
* SYS.FOPEN.T .EQ $08 Open/Append in Text mode
* SYS.FOPEN.X .EQ $80 Create if not exists
* PULLB = TYPE
* PULLW = AUXTYPE
* Out :
* CC : A = hFILE
* CS : A = EC
*--------------------------------------
K.FOPEN jsr K.PFTCheckPathSTK
>PULLW MLICALL.PARAMS+1
>PULLB K.FOPEN.MODE
>PULLB K.FOPEN.TYPE
>PULLW K.FOPEN.AUXTYPE
>MLICALL MLIGETFILEINFO
bcc .10 Already Exists
bit K.FOPEN.MODE Create if not exists ?
bpl .9 No, return MLI error
lda #S.FILEINFO.ACCESS.FULL Yes, Create...
sta MLICALL.PARAMS+3 Access
lda K.FOPEN.TYPE
sta MLICALL.PARAMS+4 File type
>LDYA K.FOPEN.AUXTYPE
>STYA MLICALL.PARAMS+5 Aux type
lda #S.FILEINFO.STORETYPE.STD
sta MLICALL.PARAMS+7
>MLICALL MLICREATE
bcc .10
.9 rts
.10 >PUSHWI S.FILE.PRODOS
>PUSHBI S.MEM.F.INIT0
jsr K.GetMem
bcs .99
>STYA ZPQuickPtr1
stx hFILE
>PUSHWI 1024 get a ProDOS IOBUF
>PUSHBI S.MEM.F.ALIGN+S.MEM.F.NOMOVE
jsr K.GetMem
bcs .98
>STYA MLICALL.PARAMS+3 Save Ptr to IOBUF for MLIOPEN call
txa
ldy #S.FILE.PRODOS.IOBUF
sta (ZPQuickPtr1),y
>MLICALL MLIOPEN
bcs .98
lda MLICALL.PARAMS+5 get ref_num
ldy #S.FILE.PRODOS.REF
sta (ZPQuickPtr1),y
sta MLICALL.PARAMS+1 Next MLI Calls are REF_NUM based
lda K.FOPEN.MODE
and #SYS.FOPEN.A Append ?
beq .20
>MLICALL MLIGETEOF
bcs .98
>MLICALL MLISETMARK
bcs .98
.20 lda K.FOPEN.MODE
and #SYS.FOPEN.T Text Mode ?
beq .30
lda #$FF
sta MLICALL.PARAMS+2
lda #$0D
sta MLICALL.PARAMS+3
>MLICALL MLINEWLINE
.30 lda hFILE
clc
rts CC
.98 pha save MLI error
jsr K.FCLOSEA.1
pla get back MLI error
sec
.99 rts
*--------------------------------------
K.FOPEN.MODE .BS 1
K.FOPEN.TYPE .BS 1
K.FOPEN.AUXTYPE .BS 2
hFILE .BS 1
*--------------------------------------
* K.FCLOSEA
* In :
* A = hFILE
*--------------------------------------
K.FCLOSEA jsr K.PFTCheckFileA
sta hFILE
jsr K.GetMemPtrA
>STYA ZPQuickPtr1
K.FCLOSEA.1 ldy #S.FILE.PRODOS.REF
lda (ZPQuickPtr1),y
beq .1
sta MLICALL.PARAMS+1
>MLICALL MLICLOSE
.1 ldy #S.FILE.PRODOS.IOBUF
lda (ZPQuickPtr1),y
beq .2
jsr K.FreeMemA
.2 lda hFILE
jsr K.FreeMemA
rts
*--------------------------------------
* K.FREAD
* In :
* PULLB = hFILE
* PULLW = Bytes To Read
* PULLW = Dest Ptr
* Out :
* Y,A = Bytes Read
*--------------------------------------
K.FREAD jsr K.PFTCheckFileSTK
ldx #MLIREAD
bra K.FREAD.1
*--------------------------------------
* K.FWRITE
* In :
* PULLB = hFILE
* PULLW = Bytes To Write
* PULLW = Src Ptr
* Out :
* Y,A = Bytes Written
*--------------------------------------
K.FWRITE jsr K.PFTCheckFileSTK
>PULLA
ldx #MLIWRITE
K.FREAD.1 jsr FILE.SetupPrt1A
>PULLW MLICALL.PARAMS+4
>PULLW MLICALL.PARAMS+2
* >MLICALL MLIWRITE
lda #4 Param Count = 4 for MLIREAD & MLIWRITE
jsr A2osX.MLICALL
bcs .9
>LDYA MLICALL.PARAMS+6
.9 rts
*--------------------------------------
* K.FFLUSHA
* In :
* A = hFILE
*--------------------------------------
K.FFLUSHA jsr K.PFTCheckFileA
jsr FILE.SetupPrt1A
>MLICALL MLIFLUSH
rts
*--------------------------------------
* K.FSEEK
* In :
* PULLB = hFILE
* PULLB = From
* PULLW = OffsetLo
* PULLW = OffsetHi
*--------------------------------------
K.FSEEK jsr K.PFTCheckFileSTK
>PULLA
jsr FILE.SetupPrt1A
>PULLB K.FSEEK.FROM
>PULLW K.FSEEK.OFFSET
>PULLW K.FSEEK.OFFSET+2
lda K.FSEEK.FROM
* cmp #SYS.FSEEK.SET =0
bne .1
stz MLICALL.PARAMS+2
stz MLICALL.PARAMS+3
stz MLICALL.PARAMS+4
bra .8
.1 cmp #SYS.FSEEK.CUR
bne .2
>MLICALL MLIGETMARK
bcc .8
rts
.2 cmp #SYS.FSEEK.END
bne .98
>MLICALL MLIGETEOF
bcs .9
.8 lda MLICALL.PARAMS+2
adc K.FSEEK.OFFSET
sta MLICALL.PARAMS+2
lda MLICALL.PARAMS+3
adc K.FSEEK.OFFSET+1
sta MLICALL.PARAMS+3
lda MLICALL.PARAMS+4
adc K.FSEEK.OFFSET+2
sta MLICALL.PARAMS+4
bcs .99 Offset out of range!
>MLICALL MLISETMARK
.9 rts
.98 lda #SYSMGR.ERRSYN
.HS 2C bit abs
.99 lda #SYSMGR.ERRFTB
sec
rts
*--------------------------------------
K.FSEEK.FROM .BS 1
K.FSEEK.OFFSET .BS 4
*--------------------------------------
* K.FTELLA
* In :
* A = hFILE
* Out :
* Y,A,X = Offset
*--------------------------------------
K.FTELLA jsr K.PFTCheckFileA
K.FTELLA.1 jsr FILE.SetupPrt1A
>MLICALL MLIGETMARK
bcs .9
>LDYA MLICALL.PARAMS+2
ldx MLICALL.PARAMS+4
.9 rts
*--------------------------------------
* K.FEOFA
* In :
* A = hFILE
* Out :
* CC :
* A=0 EOF
* A !=0 NOT EOF
* CS :
*--------------------------------------
K.FEOFA jsr K.PFTCheckFileA
jsr FILE.SetupPrt1A
jsr K.FTELLA.1
bcs .9
>STYA K.FEOFA.MARK
stx K.FEOFA.MARK+2
>MLICALL MLIGETEOF
bcs .9
sec
lda MLICALL.PARAMS+2
sbc K.FEOFA.MARK
bne .8
lda MLICALL.PARAMS+3
sbc K.FEOFA.MARK+1
bne .8
lda MLICALL.PARAMS+4
sbc K.FEOFA.MARK+2
.8 clc
.9 rts
K.FEOFA.MARK .BS 3
*--------------------------------------
* K.REMOVEYA
*--------------------------------------
K.REMOVEYA jsr K.PFTCheckPathYA
>STYA MLICALL.PARAMS+1
>MLICALL MLIDESTROY
rts
*--------------------------------------
* K.RENAME
* In :
* PULLW = Old Name
* PULLW = New Name
*--------------------------------------
K.RENAME jsr K.PFTCheckPathSTK
>PULLW MLICALL.PARAMS+1
>PULLW MLICALL.PARAMS+3
>MLICALL MLIRENAME
rts
*--------------------------------------
* K.STAT
* In :
* PULLW = PTR to Filename
* PULLW = PTR to S.STAT buffer
*--------------------------------------
K.STAT jsr K.PFTCheckPathSTK
>PULLW MLICALL.PARAMS+1
>PULLW ZPQuickPtr2
>MLICALL MLIGETFILEINFO
bcs .9
jsr FILE.MLI2STAT.Types
clc
.9 rts
*--------------------------------------
FILE.SetupPrt1A jsr K.GetMemPtrA
>STYA ZPQuickPtr1
ldy #S.FILE.PRODOS.REF
lda (ZPQuickPtr1),y
sta MLICALL.PARAMS+1
rts
*--------------------------------------
FILE.MLI2STAT.Types
lda MLICALL.PARAMS+S.FILEINFO.ACCESS
cmp #S.FILEINFO.ACCESS.FULL
bne .1
lda #S.STAT.MODE.XO+S.STAT.MODE.WO+S.STAT.MODE.RO
bra .2
.1 and #S.FILEINFO.ACCESS.R
beq .2
lda #S.STAT.MODE.XO+S.STAT.MODE.RO
.2 ldy #S.STAT.MODE
sta (ZPQuickPtr3),y
ldy #S.STAT.BLOCKS
lda MLICALL.PARAMS+S.FILEINFO.AUXTYPE
sta (ZPQuickPtr3),y
iny
lda MLICALL.PARAMS+S.FILEINFO.AUXTYPE+1
sta (ZPQuickPtr3),y
rts
*--------------------------------------
MAN
SAVE SYS/KERNEL.S.FILE
LOAD SYS/KERNEL.S
ASM