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dc285bcbc0
A2osX/SYS/KERNEL.S.STDIO.txt
Rémy GIBERT dc285bcbc0 Kernel 0.9.2
2018-07-26 17:26:39 +02:00

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NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
*/--------------------------------------
* # FPutC
* Print A (char) to hFILE
* ## C
* `int fputc ( int character, hFILE stream );`
* ## ASM
* **In:**
* A : character
* Y : stream
* **Out:**
* CC = success
*\--------------------------------------
K.FPutC sta K.IOBuf
tya
bra K.PutChar.1
*/--------------------------------------
* # PutChar
* ## C
* `int putchar ( int character );`
* ## ASM
* Print A (char) to StdOut
* **In:**
* A : char to print
* **Out:**
* CC = success
*\--------------------------------------
K.PutChar sta K.IOBuf
ldy #S.PS.hStdOut
lda (pPs),y
K.PutChar.1 jsr IO.SELECT
ldx #1
K.PutChar.X >LDYAI K.IOBuf
>STYA K.S.IOCTL+S.IOCTL.BUFPTR
stx K.S.IOCTL+S.IOCTL.BYTECNT
stz K.S.IOCTL+S.IOCTL.BYTECNT+1
jmp IO.Write.I
*/--------------------------------------
* # PutS
* Write Str to StdOut, appends '\r\n'
* ## C
* `int puts ( const char * str );`
* **In:**
* Y,A : str
* **Out:**
* CC = success
*\--------------------------------------
K.PutS >STYA K.S.IOCTL+S.IOCTL.BUFPTR
>STYA ZPPtr1
ldy #S.PS.hStdOut
lda (pPs),y
jsr K.FPutS.I
bcs .9
lda #13
sta K.IOBuf
lda #10
sta K.IOBuf+1
ldx #2
bra K.PutChar.X
.9 rts
*/--------------------------------------
* # FPutS
* Write Str to FILE
* ## C
* `int fputs (hFILE stream, const char * str );`
* **In:**
* PUSHB : hFILE
* Y,A: str
* **Out:**
* CC = success
*\--------------------------------------
K.FPutS >STYA K.S.IOCTL+S.IOCTL.BUFPTR
>STYA ZPPtr1
>PULLA
K.FPutS.I jsr IO.SELECT
ldy #0
ldx #0
.1 lda (ZPPtr1),y
beq .2
iny
bne .1
inx
inc ZPPtr1+1
bra .1
.2 sty K.S.IOCTL+S.IOCTL.BYTECNT
stx K.S.IOCTL+S.IOCTL.BYTECNT+1
jmp IO.Write.I
*/--------------------------------------
* # FGetS
* read bytes from stream into the array
* pointed to by s, until n-1 bytes are read, or a <newline> is read and
* transferred to s, or an end-of-file condition is encountered. The
* string is then terminated with a null byte.
* ## C
* `char *fgets(hFILE stream, char * s, int n);`
* ## ASM
* **In:**
* `>PUSHW n`
* `>PUSHW s`
* `lda hFILE`
* `>SYSCALL fgets`
* **Out:**
* Y,A: s
* CC = success
*\--------------------------------------
K.FGetS
clc
rts
*/--------------------------------------
* # PrintF/SPrintF/FPrintF
* Prints C-Style String
* ## C
* `int printf ( const char * format, ... );`
* `int sprintf ( char * str, const char * format, ... );`
* `int fprintf ( hFILE stream, const char * format, ... );`
* ## ASM
* **In:**
* PrintF : (example is for printing Y,A as integer : format="Y,A= %I", 2 bytes)
* `>PUSHYA`
* `...`
* `>PUSHBI bytecount`
* `>LDYAI format`
* `>SYSCALL printf`
* SPrintF :
* `>PUSHYA`
* `...`
* `>PUSHBI bytecount`
* `>PUSHWI format`
* `>LDYAI str`
* `>SYSCALL sprintf`
* FPrintF :
* `>PUSHYA`
* `...`
* `>PUSHBI bytecount`
* `>PUSHWI format`
* `lda hFILE`
* `>SYSCALL fprintf`
* **Out:**
* CC : success, Y,A = bytes sent
* CS : error, A = code from Output
* Specifiers :
* + %b : pull 1 byte to Print BIN
* + %B : pull 2 bytes to Print BIN
* + %d : pull 1 byte unsigned DEC 0..255
* + %D : pull 2 bytes unsigned DEC 0..65535
* + %u : pull 4 bytes long unsigned DEC 0..4294967295
* + %e : pull 5 Bytes float (-)1.23456789e+12
* + %f : pull 5 Bytes float (-)3.1415
* + %h : pull 1 byte to Print HEX
* + %H : pull 2 bytes to Print HEX
* + %i : pull 1 byte to Print signed DEC -128..127
* + %I : pull 2 bytes to Print signed DEC -32768..32767
* + %L : pull 4 bytes signed DEC -2147483648..2147483647
* + %n : pull 1 byte to Print low Nibble HEX
* + %N : pull 1 byte to Print high Nibble HEX
* + %s : pull 2 bytes ptr to C-Style String
* + %S : pull 2 bytes ptr to P-Style String
* + \b : Print 'BS' (08)
* + \e : Print 'ESC' ($1B,27)
* + \f : Print 'FF' ($0C,12)
* + \n : Print 'LF' ($0A,10)
* + \r : Print 'CR' ($0D,13)
* + \\\\ : Print \
* + \\% : Print %
* Modifiers for len and padding :
* + %d : '9' '12'
* + %2d : ' 9' '12'
* + %02d : '09' '12'
* + %11s : 'ABCDEFGH '
* + %011s : 'ABCDEFGH000'
* + %2f : '3.14'
*\--------------------------------------
K.SPrintF >STYA pIOBuf Out Buffer
>PULLW ZPPtr1 format
bra K.PrintF.1
K.FPrintF jsr IO.SELECT A = hFILE
>PULLW ZPPtr1 format
bra K.PrintF.0
K.PrintF >STYA ZPPtr1 format
ldy #S.PS.hStdOut
lda (pPs),y
jsr IO.SELECT
K.PrintF.0 >LDYAI K.IOBuf
>STYA pIOBuf
>STYA K.S.IOCTL+S.IOCTL.BUFPTR
K.PrintF.1 stz K.S.IOCTL+S.IOCTL.BYTECNT
stz K.S.IOCTL+S.IOCTL.BYTECNT+1
ldy #0
.1 lda (ZPPtr1),y
beq .8 end of format..
iny
cmp #'%'
bne .10
stz K.PrintF.PadL
lda #' '
sta K.PrintF.PadC
.2 ldx #PrintFTBL2-PrintFTBL1-1
lda (ZPPtr1),y
beq .99
iny
.3 cmp PrintFTBL1,x do we have a %x command?
beq .6 yes, jmp to it!
dex
bpl .3 no valid letter...
cmp #'0' ...a 0...mmm... padding char?
bne .4
ldx K.PrintF.PadL K.PrintF.PadL is not nul, so this 0 is second digit
bne .5
* lda #'0'
sta K.PrintF.PadC no, this is the first 0, so make it K.PrintF.PadC
bra .2
.4 jsr MEM.IsDigit
bcs .99
.5 and #$0F we have a digit
pha save it...
lda K.PrintF.PadL starts K.PrintF.PadL * 10
asl
asl A=times 4
adc K.PrintF.PadL CC by ASL, A=times 5
asl times 10
sta K.PrintF.PadL
pla get back digit
adc K.PrintF.PadL
sta K.PrintF.PadL
bra .2 go get next char...
.6 phy
txa
asl
tax
jsr PrintF.ESC
ply
bcc .1
rts
.8 jmp PrintF.Flush
.10 cmp #'\'
bne .20
ldx #PrintFTBL2.OUT-PrintFTBL2-1
lda (ZPPtr1),y
beq .99
iny
.12 cmp PrintFTBL2,x
beq .13
dex
bpl .12
bra .1
.13 lda PrintFTBL2.OUT,x
.20 jsr PrintF.COut
bcc .1
.99 rts
*--------------------------------------
PrintF.ESC jmp (.1,x)
.1 .DA PrintF.B,PrintF.BB
.DA PrintF.D,PrintF.DD,PrintF.U
.DA PrintF.E,PrintF.F
.DA PrintF.H,PrintF.HH
.DA PrintF.I,PrintF.II,PrintF.L
.DA PrintF.N,PrintF.NN
.DA PrintF.S,PrintF.SS
*--------------------------------------
PrintFTBL1 .AS "bBdDuefhHiILnNsS"
PrintFTBL2 .AS "befnr\%"
PrintFTBL2.OUT .HS 08.1B.0C.0A.0D \b\e\f\n\r
.DA #'\' \\
.DA #'%' \%
*--------------------------------------
PrintF.BB >PULLA
pha
jsr PrintF.B
pla
bcc PrintF.B.1
PrintF.BB.RTS rts
*--------------------------------------
PrintF.B >PULLA
PrintF.B.1 ldx #8
.1 asl
pha
lda #'0'
adc #0 add Carry
jsr PrintF.COut
pla
bcs PrintF.BB.RTS
dex
bne .1
rts
*--------------------------------------
PrintF.I sec signed short
.HS 90 BCC
PrintF.D clc unsigned short (BYTE)
ldx #0 one byte
>PULLB HEXBUF
stz HEXBUF+1
bra PrintF.DD.1
PrintF.II sec signed int
.HS 90 BCC
PrintF.DD clc unsigned int (WORD)
ldx #1 two bytes
>PULLW HEXBUF
PrintF.DD.1 stz HEXBUF+2
stz HEXBUF+3
bra PrintF.U.1
PrintF.L sec signed long
.HS 90 BCC
PrintF.U clc unsigned long (DWORD)
ldx #3 4 bytes
>PULLW HEXBUF
>PULLW HEXBUF+2
PrintF.U.1 bcc PrintF.Hex2Dec unsigned, nothing to check
lda HEXBUF,x get sign
bpl PrintF.Hex2Dec
* sec
ldy #0
.1 lda HEXBUF,y two's complement of X bytes
eor #$ff
adc #0
sta HEXBUF,y
iny
dex
bpl .1
sec tell to print a "-" sign....
*--------------------------------------
* Convert HEXBUF to ASCBUF decimal padded with 0
*--------------------------------------
PrintF.Hex2Dec ror .31+1
ldx #4
.1 stz BCDBUF,x Clear all 5 bytes
dex
bpl .1
sed switch to BCD mode
ldx #32 let's roll 32 bits
.2 asl HEXBUF
rol HEXBUF+1
rol HEXBUF+2
rol HEXBUF+3
ldy #4
.3 lda BCDBUF,y
adc BCDBUF,y
sta BCDBUF,y
dey
bpl .3
dex
bne .2
cld
.31 bit #$ff SELF MODIFIED -sign to print before digits ?
bpl .9
lda #'-'
jsr PrintF.COut
.9 lda K.PrintF.PadL any Len format ?
beq .4 no
lda #10
sec yes, Print only digits starting at pos 10-K.PrintF.PadL
sbc K.PrintF.PadL
.4 tax x=0 if no K.PrintF.PadL, or x=10-K.PrintF.PadL
.5 txa X range 0 to 9
lsr CS if lo nibble (1,3,5,7,9)
tay
lda BCDBUF,y
bcs .6
lsr
lsr
lsr
lsr
.6 and #$0F
ora #$30
cmp #$30
beq .7 a zero?
inc K.PrintF.PadL found a non zero, Print all digits, even if 0, next time
ldy #'0'
sty K.PrintF.PadC
bra .8
.7 cpx #9 last digit ?
beq .8 Print always
ldy K.PrintF.PadL no pad to fill, do not Print 0
beq .10
lda K.PrintF.PadC fill with K.PrintF.PadC
.8 jsr PrintF.COut
bcs .99
.10 inx
cpx #10
bne .5
clc
.99 rts
*--------------------------------------
* EXP(8) 1(s) 1significants(31)
* http://apple2.org.za/gswv/a2zine/GS.WorldView/Resources/GS.TECH.INFO/AppleSoft/
*--------------------------------------
PrintF.E sec Force "E+12"
.HS 90 BCC
PrintF.F clc
lda pStack+1
sta INDEX+1
lda pStack
sta INDEX
clc
adc #5
sta pStack
ldx #ROM.SETFAC
jsr GP.ROMCALL
ldy #3 In order not to trash A2osX.SaveSM,A2osX.SaveSX
ldx #ROM.FOUT
jsr GP.ROMCALL
ldy #0
.2 lda $102,y
beq .8
jsr PrintF.COut
iny
bne .2
.8 clc
.9 rts
*--------------------------------------
PrintF.HH >PULLA
pha
jsr PrintF.H
pla
bra PrintF.H.1
*--------------------------------------
PrintF.H >PULLA
PrintF.H.1 pha
jsr PrintF.NN.1
pla
bra PrintF.N.1
*--------------------------------------
PrintF.N >PULLA
PrintF.N.1 and #$0F
bra PrintF.NN.2
PrintF.NN >PULLA
PrintF.NN.1 lsr
lsr
lsr
lsr
PrintF.NN.2 ora #$30
cmp #$3A
bcc .1
adc #6
.1 jmp PrintF.COut
*--------------------------------------
PrintF.S ldy #$ff CSTR
.HS 2C bit abs
PrintF.SS ldy #$00 PSTR
>PULLW ZPPtr2
lda (ZPPtr2) if CSTR:last char=0, if PSTR:len=0
beq .8
sty .1+1
.1 lda #$ff Self Modified
bne .11 CSTR
tya PSTR
cmp (ZPPtr2) len check
beq .2
.11 iny
lda (ZPPtr2),y
beq .2
jsr PrintF.COut
bcs .9
lda K.PrintF.PadL
beq .1
cpy K.PrintF.PadL
bne .1
clc
rts
.2 lda K.PrintF.PadL
beq .8
.3 cpy K.PrintF.PadL
beq .8
lda K.PrintF.PadC
jsr PrintF.COut
bcs .9
iny
bne .3
.8 clc
.9 rts
*--------------------------------------
PrintF.COut phy
ldy K.S.IOCTL+S.IOCTL.BYTECNT
sta (pIOBuf),y
inc K.S.IOCTL+S.IOCTL.BYTECNT
bne .8
lda pIOBuf+1
eor /K.IOBuf
bne .7
* we are printing to IObuf, flush!
lda K.S.IOCTL+S.IOCTL.BYTECNT+1
pha
lda #1 Flush $100 bytes
sta K.S.IOCTL+S.IOCTL.BYTECNT+1
pla
inc
sta K.S.IOCTL+S.IOCTL.BYTECNT+1
.7 inc pIOBuf+1
inc K.S.IOCTL+S.IOCTL.BYTECNT+1
.8 ply
clc
rts
*--------------------------------------
PrintF.Flush jmp IO.Write.I
*/--------------------------------------
* # GetChar
* Get char from StdIn
* **In:**
* none.
* **Out:**
* CC = success
* A = char
*\--------------------------------------
K.GetChar ldy #S.PS.hStdIn
lda (pPs),y
*/--------------------------------------
* # GetC
* Get char from Node
* ## C
* `int getc ( FILE * stream );`
* ## ASM
* **In:**
* A = hNODE
* **Out:**
* CC = success
* A = char
*\--------------------------------------
K.GetC jsr IO.SELECT
bcs .9
>LDYAI K.IOBuf
>STYA K.S.IOCTL+S.IOCTL.BUFPTR
lda #1
sta K.S.IOCTL+S.IOCTL.BYTECNT
stz K.S.IOCTL+S.IOCTL.BYTECNT+1
jsr IO.READ.I
bcs .9
lda K.IOBuf
.9 rts
*--------------------------------------
*K.PrintF.PadL .BS 1
*K.PrintF.PadC .BS 1
*HEXBUF .BS 4
*BCDBUF .BS 5 5, enough to handle 10 digits (32bits)
*--------------------------------------
HEXBUF .EQ FAC
K.PrintF.PadL .EQ FAC+4
K.PrintF.PadC .EQ FAC+5
BCDBUF .EQ ARG
*/--------------------------------------
* # SScanF
* Read formatted data from string
* ## C
* `int sscanf ( const char * s, const char * format, ... );`
* ## ASM
* **In:**
* `>PUSHBI Argument Byte count`
* + %i : short int
* + %d : byte
* + %I : int
* + %D : word
* + %L : long int
* + %U : dword
* + %h : HEX byte
* + %H : HEX word
* + %s : string
* `>PUSHW ptr`
* `...`
* `>PUSHBI bytecount`
* `>PUSHWI format`
* `>LDYA s`
* **Out:**
* Y,A = Number of arguments filled.
*\--------------------------------------
K.SScanF >STYA ZPPtr2 String to Scan
>PULLW ZPPtr1 format
>PULLB K.SScanF.ByteCnt
stz K.SScanF.ByteIdx
.1 lda (ZPPtr1) End Of format?
beq .8
inc ZPPtr1
bne .11
inc ZPPtr1+1
.11 cmp #'%' Escape?
beq .2
cmp (ZPPtr2) Same char in string?
bne .9
inc ZPPtr2
bne .1
inc ZPPtr2+1
bra .1
.2 lda (ZPPtr1) Get specifier after %
beq .9 unexpected End of format after "%" ?
inc ZPPtr1
bne .21
inc ZPPtr1+1
.21 ldx #K.SScanFCNT-K.SScanFTBL-1
.3 cmp K.SScanFTBL,x
beq .4
dex
bpl .3
.9 jsr .8
lda #MLI.E.EOF
sec
rts
.4 jsr .5
bcs .9
bra .1
.8 lda pStack
clc
adc K.SScanF.ByteCnt ...
sta pStack CC
.99 rts
*--------------------------------------
.5 ldy K.SScanF.ByteIdx
cpy K.SScanF.ByteCnt
beq .99 CS
lda (pStack),y
sta ZPPtr3
iny
lda (pStack),y
sta ZPPtr3+1 get VAR Ptr
iny
sty K.SScanF.ByteIdx
jmp (K.SScanFJMP,x)
*--------------------------------------
K.SScanF.ByteCnt .BS 1
K.SScanF.ByteIdx .BS 1
*--------------------------------------
K.SScanFTBL .DA #'i,#'d,#'I,#'D,#'l,#'u,#'h,#'H,#'s
K.SScanFCNT .DA #1, #1, #2, #2, #4, #4, #1, #2
K.SScanFJMP .DA K.SScanF.I
.DA K.SScanF.D
.DA K.SScanF.II
.DA K.SScanF.DD
.DA K.SScanF.L
.DA K.SScanF.U
.DA K.SScanF.H
.DA K.SScanF.HH
.DA K.SScanF.S
*--------------------------------------
K.SScanF.I
K.SScanF.D
K.SScanF.II
K.SScanF.DD
K.SScanF.L
K.SScanF.U lda K.SScanFTBL+1,x Get VAR size
pha Save VAL size
jsr STDLIB.GetDec
bra K.SScanF.GetVAL
*--------------------------------------
K.SScanF.HH
K.SScanF.H lda K.SScanFTBL+1,x Get VAR size
pha
jsr STDLIB.GetHex
K.SScanF.GetVAL jsr K.SScanF.Fwd Y=char count parsed
.1 ply get back VAL size
.2 lda STDLIB.32-1,y
dey
sta (ZPPtr3),y
bne .2
.9 rts
*--------------------------------------
K.SScanF.S ldy #$ff
.1 iny
lda (ZPPtr2),y
sta (ZPPtr3),y
beq K.SScanF.Fwd
cmp #' '
bne .1
iny
K.SScanF.Fwd tya Y=char count parsed
clc
adc ZPPtr2
sta ZPPtr2
bcc .8
inc ZPPtr2+1
.8 rts
*/--------------------------------------
* # FOpen
* Open a file
* ## C
* `hFILE fopen ( const char * filename, short int mode, short int ftype, int auxtype );`
* **In:**
* ## ASM
* `>PUSHWI auxtype`
* `>PUSHBI ftype`
* `>PUSHBI mode`
* + SYS.FOpen.R : if R and !exists -> ERROR
* + SYS.FOpen.W : if W and !exists -> CREATE
* + SYS.FOpen.A : Append
* + SYS.FOpen.T : Open/Append in Text mode
* + SYS.FOpen.X : Create if not exists
* http://man7.org/linux/man-pages/man3/fopen.3.html
* r = O_RDONLY
* w = O_WRONLY | O_CREAT | O_TRUNC
* a = O_WRONLY | O_CREAT | O_APPEND
* r+ = O_RDWR
* w+ = O_RDWR | O_CREAT | O_TRUNC
* a+ = O_RDWR | O_CREAT | O_APPEND
*
* TODO: mode="w+t=TYP,x=AUXTYPE"
* `>LDYAI filename`
* **Out:**
* CC : A = hFILE
* CS : A = EC
*\--------------------------------------
K.FOpen jsr PFT.CheckPathYA
jsr STDIO.SetMLIPathYA
>PULLB K.FOpen.MODE
>PULLB K.FOpen.TYPE
>PULLW K.FOpen.AUXTYPE
>MLICALL MLIGETFILEINFO
bcc K.FOpen.10 Already Exists
bit K.FOpen.MODE Create if not exists ?
bpl K.FOpen.9 No, return MLI error
lda #S.FI.A.FULL Yes, Create...
sta K.MLI.PARAMS+3 Access
lda K.FOpen.TYPE
sta K.MLI.PARAMS+4 File type
>LDYA K.FOpen.AUXTYPE
>STYA K.MLI.PARAMS+5 Aux type
lda #S.FI.ST.STD
sta K.MLI.PARAMS+7
ldx #3
.1 lda DATELO,x
sta K.MLI.PARAMS+8,x
dex
bpl .1
>MLICALL MLICREATE
bcc K.FOpen.10
K.FOpen.9 rts
K.FOpen.10 >LDYAI S.FD.REG
jsr K.GetMem0
bcs K.FOpen.9
>STYA ZPPtr1
stx .8+1
* ldy #S.FD.T Done by GetMem0
* lda #S.FD.T.REG
* sta (ZPPtr1),y
jsr STDIO.SetIOBUF
bcs .98
>MLICALL MLIOPEN
bcs .98
lda K.MLI.PARAMS+5 get ref_num
ldy #S.FD.REG.REF
sta (ZPPtr1),y
sta K.MLI.PARAMS+1 Next MLI Calls are REF_NUM based
lda K.FOpen.MODE
bit #SYS.FOpen.W
beq .20 Write mode ?
and #SYS.FOpen.A Append ?
bne .11 yes, go to end of file
stz K.MLI.PARAMS+2
stz K.MLI.PARAMS+3
stz K.MLI.PARAMS+4
>MLICALL MLISETEOF no, reset size to 0
bra .21
.11 >MLICALL MLIGETEOF
bcs .98
>MLICALL MLISETMARK
.21 bcs .98
.20 lda K.FOpen.MODE
and #SYS.FOpen.T Text Mode ?
beq .8
lda #$FF
sta K.MLI.PARAMS+2
lda #$0D
sta K.MLI.PARAMS+3
>MLICALL MLINEWLINE
.8 lda #$ff Self Modified
clc
rts CC
.98 pha save MLI error
lda .8+1
jsr K.FClose
pla get back MLI error
sec
rts
*--------------------------------------
K.FOpen.MODE .BS 1
K.FOpen.TYPE .BS 1
K.FOpen.AUXTYPE .BS 2
*/--------------------------------------
* # FClose
* Close a file
* ## C
* int fclose ( hFILE streamm );
* ## ASM
* **In:**
* A = hFILE
* **Out:**
*\--------------------------------------
K.FClose jsr PFT.CheckNodeA
sta .8+1
jsr K.GetMemPtr
>STYA ZPPtr1
ldy #S.FD.REG.REF
lda (ZPPtr1),y
beq .1
sta K.MLI.PARAMS+1
>MLICALL MLICLOSE
.1 ldy #S.FD.REG.IOBUF
lda (ZPPtr1),y
beq .8
jsr K.FreeMem
.8 lda #$ff Self Modified
jmp K.FreeMem
.9 rts
*/--------------------------------------
* # FRead
* int fread (hFILE stream, void * ptr, int count );
* Read bytes from file
* **In:**
* `>PUSHWI count`
* `>PUSHW ptr`
* `lda hFILE`
* `>SYSCALL fread`
* **Out:**
* Y,A = Bytes Read
*\--------------------------------------
K.FRead jsr PFT.CheckNodeA
ldx #MLIREAD
bra K.FReadWrite.1
*/--------------------------------------
* # FWrite
* Write bytes to file
* ## C
* `int fwrite (hFILE stream, const void * ptr, int count );`
* ## ASM
* **In:**
* `>PUSHWI count`
* `>PUSHW ptr`
* `lda hFILE`
* `>SYSCALL fwrite`
* # Out:
* Y,A = Bytes Written
*\--------------------------------------
K.FWrite jsr PFT.CheckNodeA
ldx #MLIWRITE
K.FReadWrite.1 jsr STDIO.GetRefNum
>PULLW K.MLI.PARAMS+2
>PULLW K.MLI.PARAMS+4
lda #4 Param Count = 4 for MLIREAD & MLIWRITE
jsr GP.MLICall
bcs .9
>LDYA K.MLI.PARAMS+6
.9 rts
*/--------------------------------------
* # FFlush
* ## C
* int fflush(hFILE stream);
* ## ASM
* **In:**
* A = hFILE
*\--------------------------------------
K.FFlush jsr PFT.CheckNodeA
jsr STDIO.GetRefNum
>MLICALL MLIFLUSH
rts
*/-------------------------------------
* # FSeek
* Set the file-position indicator for hFILE
* ## C
* `int fseek(hFILE stream, long offset, int whence);`
* ## ASM
* **In:**
* PUSHW = Ptr to Offset (DWORD)
* PUSHB = From
* PUSHB = hFILE
*\-------------------------------------
K.FSeek jsr PFT.CheckNodeSTK
>PULLA
jsr STDIO.GetRefNum
>PULLA FROM
tax
>PULLW ZPPtr1
cpx #SYS.FSeek.END+1
bcs .98
txa
asl
tax
jmp (.1,x)
.1 .DA .10
.DA .20
.DA .30
* K.FSeek.SET
.10 stz K.MLI.PARAMS+2
stz K.MLI.PARAMS+3
stz K.MLI.PARAMS+4
bra .8
* K.FSeek.CUR
.20 >MLICALL MLIGETMARK
bcc .8
rts
* K.FSeek.END
.30 >MLICALL MLIGETEOF
bcs .9
.8 ldy #0
ldx #3 3 bytes, 24 bits!!!
clc
.81 lda K.MLI.PARAMS+2,y
adc (ZPPtr1),y
sta K.MLI.PARAMS+2,y
iny
dex
bne .81
bcs .99 Offset out of range!
.82 >MLICALL MLISETMARK
bcc .9
cmp #MLI.E.BEYEOF
bne .9
>MLICALL MLISETEOF
bcc .82
.9 rts
.98 lda #K.E.SYN
.HS 2C bit abs
.99 lda #K.E.FTB
sec
rts
*/--------------------------------------
* # FEOF
* Test the end-of-file indicator for hFILE
* **In:**
* A = hFILE
* **Out:**
* CC :
* A=0 EOF
* A !=0 NOT EOF
* CS :
*\--------------------------------------
K.FEOF jsr PFT.CheckNodeA
jsr STDIO.GetRefNum
>MLICALL MLIGETMARK
bcs .9
ldy #2
.1 lda K.MLI.PARAMS+2,y
sta K.FEOF.MARK,y
dey
bpl .1
>MLICALL MLIGETEOF
bcs .9
ldy #2
.2 lda K.MLI.PARAMS+2,y
eor K.FEOF.MARK,y
bne .8
dey
bpl .2
.8 clc
.9 rts
K.FEOF.MARK .BS 3
*/--------------------------------------
* # FTell
* Return the current value of the file-position indicator
* ## C
* `long ftell(hFILE stream);`
* ## ASM
* **In:**
* PUSHW = Ptr to Offset (DWORD)
* PUSHB = hFILE
* **Out:**
* Offset = Offset
*\--------------------------------------
K.FTell jsr PFT.CheckNodeSTK
>PULLA
jsr STDIO.GetRefNum
>PULLW ZPPtr1
>MLICALL MLIGETMARK
bcs .9
ldy #3
lda #0
sta (ZPPtr1),y
dey
.1 lda K.MLI.PARAMS+2,y
sta (ZPPtr1),y
dey
bpl .1
.9 rts
*/--------------------------------------
* # Remove
*\--------------------------------------
K.Remove jsr PFT.CheckPathYA
jsr STDIO.SetMLIPathYA
>MLICALL MLIDESTROY
rts
*/--------------------------------------
* # Rename
* Rename a file
* **In:**
* PUSHW = New Name
* PUSHW = Old Name
* **Out:**
*\--------------------------------------
K.Rename jsr PFT.CheckPathSTK
jsr STDIO.PullMLIPath
>PULLW .1+1
ldy #0
.1 lda $ffff,y Self Modified
beq .8
iny
sta K.Buf256,y
cpy #MLI.MAXPATH
bne .1
.8 sty K.Buf256
>LDYAI K.Buf256
>STYA K.MLI.PARAMS+3
>MLICALL MLIRENAME
rts
*--------------------------------------
STDIO.PullMLIPath
>PULLYA
STDIO.SetMLIPathYA
>STYA .1+1
ldy #0
.1 lda $ffff,y Self Modified
beq .8
iny
sta K.MLI.PATH,y
cpy #MLI.MAXPATH
bne .1
.8 sty K.MLI.PATH
>LDYAI K.MLI.PATH
>STYA K.MLI.PARAMS+1
rts
*--------------------------------------
STDIO.SetIOBUF >LDYAI 1024 get a ProDOS IOBUF
ldx #S.MEM.F.ALIGN+S.MEM.F.NOMOVE
jsr MEM.GetMem.YAX
bcs .9
>STYA K.MLI.PARAMS+3 Save Ptr to IOBUF for MLIOPEN call
txa
ldy #S.FD.REG.IOBUF
sta (ZPPtr1),y
.9 rts
*--------------------------------------
STDIO.GetRefNum jsr K.GetMemPtr
>STYA ZPPtr1
ldy #S.FD.REG.REF
lda (ZPPtr1),y
sta K.MLI.PARAMS+1
rts
*--------------------------------------
STDIO.IOERR lda #MLI.E.IO
sec
rts
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SYS/KERNEL.S.STDIO
LOAD /A2OSX.SRC/SYS/KERNEL.S
ASM
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