mirror of https://github.com/A2osX/A2osX.git
669 lines
12 KiB
Plaintext
669 lines
12 KiB
Plaintext
NEW
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AUTO 3,1
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*/--------------------------------------
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* # putchar (BLOCKING)
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* Print A (char) to StdOut
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* ## C
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* `int putchar ( short int character );`
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* ## ASM
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* **In:**
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* `lda character`
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* `>SYSCALL putchar`
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* ## RETURN VALUE
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* CC = success
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*\--------------------------------------
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K.PutChar >PUSHA character
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ldy #S.PS.hStdOut
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lda (pPS),y
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jsr K.FPutC
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bcc .8
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tay
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bne .8
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>PULLA CS,A=0:BLOCKING, restore A
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.8 rts
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*/--------------------------------------
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* # fputc (BLOCKING)
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* Print A (char) to hFILE
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* ## C
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* `int fputc ( hFILE stream , short int character );`
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* ## ASM
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* **In:**
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* `>PUSHB character`
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* `lda stream`
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* `>SYSCALL fputc`
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* ## RETURN VALUE
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* CC = success
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*\--------------------------------------
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K.FPutC jsr PFT.CheckNodeA
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bcs .8
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lda (pStack) character
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sta K.IOBuf
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lda #0
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>PUSHA
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inc write 1 byte
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>PUSHA
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>PUSHWI K.IOBuf buf
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jsr UNISTD.Write
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bcc .8 pop char...
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cmp #E.NODATA
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sec
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bne .8
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inc CS,A=0:BLOCKING
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rts
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.8 >POP 1
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rts
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*/--------------------------------------
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* # puts (BLOCKING)
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* Write Str to StdOut, appends '\r\n'
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* ## C
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* `int puts ( const char * str );`
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* **In:**
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* ## ASM
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* `>LDYAI str`
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* `>SYSCALL PutS`
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* ## RETURN VALUE
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* CC = success
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*\--------------------------------------
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K.PutS >STYA .1+1
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ldy #0
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.1 lda $FFFF,y SELF MODIFIED
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beq .2
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sta K.IOBuf,y
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iny
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bne .1
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.9 lda #E.BUF
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sec
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rts
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.2 lda #C.CR
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sta K.IOBuf,y
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iny
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beq .9
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lda #C.LF
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sta K.IOBuf,y
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iny
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beq .9
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lda #0
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sta K.IOBuf,y
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ldy #S.PS.hStdOut
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lda (pPS),y
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>PUSHA
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>PUSHWI K.IOBuf
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jsr K.FPutS
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bcc K.PutS.RTS
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tay
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bne K.PutS.RTS
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>LDYA .1+1 CS,A=0:BLOCKING, restore Y,A
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K.PutS.RET3 >POP 3 pop StdOut & buffer
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K.PutS.RTS rts
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*/--------------------------------------
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* # fputs (BLOCKING)
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* Write Str to hFILE
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* ## C
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* `int fputs (hFILE stream, const char * str );`
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* ## ASM
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* **In:**
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* `>PUSHB stream`
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* `>PUSHW str`
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* `>SYSCALL fputs`
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* ## RETURN VALUE
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* CC = success
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*\--------------------------------------
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K.FPutS jsr PFT.CheckNode2 set IO.hFD
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bcs K.PutS.RET3
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lda (pStack)
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sta ZPPtr2 Get String
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ldy #1
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lda (pStack),y
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sta ZPPtr2+1
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ldy #0
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ldx #0
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.1 lda (ZPPtr2),y
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beq .2
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iny
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bne .1
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inx
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bra .1
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.2 txa
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>PUSHA push len HI
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tya
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>PUSHA push len LO
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>PUSHW ZPPtr2
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jsr UNISTD.Write
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bcc K.PutS.RET3
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cmp #E.NODATA
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sec
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bne K.PutS.RET3 IO Error
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inc FF-> 0 = BLOCKING
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K.FPutS.RTS rts
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*/--------------------------------------
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* # fgets (BLOCKING)
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* read bytes from stream into the array
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* pointed to by s, until n-1 bytes are read, or a <newline> is read and
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* transferred to s, or an end-of-file condition is encountered. The
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* string is then terminated with a null byte.
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* ## C
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* `char *fgets(hFILE stream, char * s, int n);`
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* ## ASM
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* **In:**
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* `>PUSHW n`
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* `>PUSHW s`
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* `lda hFILE`
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* `>SYSCALL fgets`
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* ## RETURN VALUE
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* Y,A: s
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* CC = success
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*\--------------------------------------
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* (pStack)+2 n
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* (pStack)+0 s
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*--------------------------------------
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K.FGetS jsr PFT.CheckNodeA
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bcs K.FPutS.RTS
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lda (pStack)
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sta ZPPtr2 s LO
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ldy #1
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lda (pStack),y
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sta ZPPtr2+1 s HI
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iny
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lda (pStack),y n LO
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sta ZPPtr1
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iny
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lda (pStack),y n HI
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sta ZPPtr1+1
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bmi .3 already something in buffer
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.1 jsr STDIO.Get.1
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bcc .2
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cmp #MLI.E.EOF
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beq .9
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cmp #E.NODATA
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sec
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bne .9 IO error
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lda #0 BLOCKING
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rts
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.2 lda K.IOBuf
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cmp #C.LF Discard any leading LF from a prev CR/LF
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beq .1
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cmp #C.CR
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beq .8 empty string
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jsr SHARED.PutCharPtr2
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lda ZPPtr1
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eor #$ff
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sta ZPPtr1
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lda ZPPtr1+1
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eor #$ff
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sta ZPPtr1+1
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*--------------------------------------
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.3 inc ZPPtr1
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bne .4
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inc ZPPtr1+1
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beq .8 Buffer full
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.4 jsr STDIO.Get.1
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bcs .5
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lda K.IOBuf
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cmp #C.CR
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beq .8
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jsr SHARED.PutCharPtr2
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bra .3
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.5 cmp #MLI.E.EOF
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beq .8 String terminated by EOF
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cmp #E.NODATA
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sec
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bne .9 I/O error
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lda ZPPtr2 NO DATA, but string not yet terminated
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sta (pStack) s
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ldy #1
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lda ZPPtr2+1
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sta (pStack),y s
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iny
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lda ZPPtr1
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sta (pStack),y !n LO
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iny
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lda ZPPtr1+1
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sta (pStack),y !n HI
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lda #0 BLOCKING
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* sec
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rts
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.8 lda #0
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sta (ZPPtr2) terminate string
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clc
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.9 >RET 4
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*/--------------------------------------
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* # getchar (BLOCKING)
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* Get char from StdIn
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* ## C
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* `short int getchar ( );`
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* ## ASM
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* **In:**
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* `>SYSCALL getchar`
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* ## RETURN VALUE
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* CC = success
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* A = char
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*\--------------------------------------
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K.GetChar ldy #S.PS.hStdIn
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lda (pPS),y
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*/--------------------------------------
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* # getc (BLOCKING)
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* Get char from Node
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* ## C
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* `short int getc ( short int stream );`
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* ## ASM
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* **In:**
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* `lda stream`
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* `>SYSCALL getc`
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* ## RETURN VALUE
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* CC = success
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* A = char
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*\--------------------------------------
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K.GetC jsr PFT.CheckNodeA
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bcs K.GetC.RTS
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jsr STDIO.Get.1
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bcc .8
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cmp #E.NODATA
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sec
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bne K.GetC.RTS I/O error
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inc 0 = BLOCKING
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rts
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.8 lda K.IOBuf
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K.GetC.RTS rts
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*--------------------------------------
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STDIO.Get.1 lda #0
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>PUSHA
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inc read 1 byte
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>PUSHA
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>PUSHWI K.IOBuf
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jmp UNISTD.READ
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*/--------------------------------------
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* # ungetc
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* push byte back into input stream
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* ## C
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* `short int ungetc(short int c, short int stream);`
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* ## ASM
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* `>PUSHB c`
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* `>PUSHB stream`
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* `>SYSCALL ungetc`
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* ## RETURN VALUE
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* CC = success
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* A = char
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*\--------------------------------------
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K.UngetC clc
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rts
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*/--------------------------------------
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* # FOpen
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* Open a file
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* ## C
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* `short int fopen ( const char *filename, short int flags, short int ftype, int auxtype );`
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* **In:**
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* ## ASM
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* `>PUSHW filename`
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* `>PUSHB flags`
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* + O.RDONLY : if R and !exists -> ERROR
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* + O.WRONLY : if W and !exists -> CREATE
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* + O.TRUNC : Reset Size To 0
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* + O.APPEND : Append
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* + O.TEXT : Open/Append in Text mode
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* + O.CREATE : Create if not exists
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* `>PUSHB ftype`
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* `>PUSHW auxtype`
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* TODO: replace flags/ftype/auxtype with mode="w+,t=TYP,x=AUXTYPE"
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* + r = O_RDONLY
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* + r+ = O_RDWR
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* + w = O_WRONLY | O_CREAT | O_TRUNC
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* + w+ = O_RDWR | O_CREAT | O_TRUNC
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* + a = O_WRONLY | O_CREAT | O_APPEND
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* + a+ = O_RDWR | O_CREAT | O_APPEND
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* + ,t=123 or t=$ff or t=TXT
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* + ,x=12345 or x=$ffff
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* ## RETURN VALUE
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* CC : A = hFILE
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* CS : A = EC
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*\--------------------------------------
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K.FOpen jsr PFT.CheckPath4
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bcs .9
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>PULLW IO.Open.AUXTYPE
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>PULLB IO.Open.TYPE
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>PULLB IO.Open.FLAGS
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inc pStack discard filename
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inc pStack
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jmp UNISTD.Open
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.9 >POP 6
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.99 rts
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*/--------------------------------------
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* # FClose
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* Close a file
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* ## C
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* `int fclose ( short int stream );`
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* ## ASM
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* **In:**
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* `lda stream`
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* `>SYSCALL FClose`
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* ## RETURN VALUE
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*\--------------------------------------
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K.FClose jsr PFT.CheckNodeA
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bcs K.FRead.RTS
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jmp UNISTD.Close
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*/--------------------------------------
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* # FRead (BLOCKING)
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* Read bytes from file
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* ## C
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* `int fread (short int stream, void * ptr, int count );`
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* ## ASM
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* **In:**
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* `>PUSHWI count`
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* `>PUSHW ptr`
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* `lda stream`
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* `>SYSCALL fread`
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* ## RETURN VALUE
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* Y,A = Bytes Read
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*\--------------------------------------
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K.FRead jsr PFT.CheckNodeA
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bcs K.FWrite.RET4
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jsr UNISTD.Read
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bcs K.FWrite.9
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K.FRead.RTS rts
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*/--------------------------------------
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* # FWrite (BLOCKING)
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* Write bytes to file
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* ## C
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* `int fwrite ( short int stream, const void * ptr, int count );`
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* ## ASM
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* **In:**
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* `>PUSHWI count`
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* `>PUSHW ptr`
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* `lda stream`
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* `>SYSCALL fwrite`
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* ## RETURN VALUE
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* Y,A = Bytes Written
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*\--------------------------------------
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K.FWrite jsr PFT.CheckNodeA
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bcs K.FWrite.RET4
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jsr UNISTD.Write
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bcc K.FWrite.RTS
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K.FWrite.9 cmp #E.NODATA
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sec
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bne K.FWrite.RTS IO Error
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dec pStack FF = NODATA
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dec pStack
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dec pStack
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dec pStack keep ptr & count on stack
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inc 0 = BLOCKING
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* sec
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K.FWrite.RTS rts
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K.FWrite.RET4 >RET 4
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*/--------------------------------------
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* # FFlush
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* ## C
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* `int fflush( short int stream );`
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* ## ASM
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* **In:**
|
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* `lda stream`
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* `>SYSCALL fflush`
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*\--------------------------------------
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K.FFlush jsr PFT.CheckNodeA
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bcs .9
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|
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lda (pFD)
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bne STDIO.IOERR
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>MLICALL MLIFLUSH
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.9 rts
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*--------------------------------------
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STDIO.IOERR lda #MLI.E.IO
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sec
|
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rts
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*/-------------------------------------
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* # FSeek
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* Set the file-position indicator for hFILE
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* ## C
|
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* `int fseek( short int stream, long offset, short int whence );`
|
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* ## ASM
|
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* **In:**
|
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* `>PUSHBI whence`
|
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* `>PUSHL offset`
|
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* `lda stream`
|
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* `>SYSCALL fseek`
|
||
*\-------------------------------------
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K.FSeek jsr PFT.CheckNodeA
|
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bcc .11
|
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|
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>RET 5
|
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|
||
.11 lda (pFD)
|
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bne STDIO.IOERR
|
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>PULLL ACC32
|
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>PULLA whence
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cmp #SEEK.END
|
||
beq .30
|
||
bcs .98
|
||
|
||
dec
|
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beq .20
|
||
|
||
stz K.MLI.PARAMS+2
|
||
stz K.MLI.PARAMS+3
|
||
stz K.MLI.PARAMS+4
|
||
bra .8
|
||
|
||
* SEEK.CUR
|
||
.20 >MLICALL MLIGETMARK
|
||
bcc .8
|
||
rts
|
||
|
||
* SEEK.END
|
||
.30 >MLICALL MLIGETEOF
|
||
bcs .9
|
||
|
||
.8 ldy #0
|
||
|
||
clc
|
||
|
||
.81 lda K.MLI.PARAMS+2,y
|
||
adc ACC32,y
|
||
sta K.MLI.PARAMS+2,y
|
||
|
||
iny
|
||
tya 3 bytes, 24 bits!!!
|
||
eor #3
|
||
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 #E.BADARG
|
||
.HS 2C bit abs
|
||
.99 lda #E.FTB
|
||
* sec
|
||
K.FSeek.RTS rts
|
||
*/--------------------------------------
|
||
* # FEOF
|
||
* Test the end-of-file indicator for hFILE
|
||
* ## C
|
||
* `int feof( short int stream );`
|
||
* ## ASM
|
||
* **In:**
|
||
* `lda stream`
|
||
* `>SYSCALL feof`
|
||
* ## RETURN VALUE
|
||
* CC :
|
||
* A = $ff EOF
|
||
* A = 0 NOT EOF
|
||
* CS :
|
||
*\--------------------------------------
|
||
K.FEOF jsr PFT.CheckNodeA
|
||
bcs K.FSeek.RTS
|
||
|
||
IO.EOF lda (pFD)
|
||
tax
|
||
jmp (.1,x)
|
||
.1 .DA FS.EOF.REG
|
||
.DA STDIO.IOERR DIR
|
||
.DA IO.EOF.CDEV
|
||
.DA STDIO.IOERR BDEV
|
||
.DA STDIO.IOERR LNK
|
||
.DA STDIO.IOERR DSOCK
|
||
.DA IO.EOF.SSOCK
|
||
.DA IO.EOF.PIPE
|
||
*/--------------------------------------
|
||
* # FTell
|
||
* Return the current value of the file-position indicator
|
||
* ## C
|
||
* `long ftell( short int stream );`
|
||
* ## ASM
|
||
* **In:**
|
||
* `lda stream`
|
||
* `>SYSCALL ftell`
|
||
* ## RETURN VALUE
|
||
* On stack (long)
|
||
*\--------------------------------------
|
||
K.FTell jsr PFT.CheckNodeA
|
||
bcs .9
|
||
>MLICALL MLIGETMARK
|
||
bcs .9
|
||
|
||
lda #0
|
||
>PUSHA
|
||
|
||
ldy #2
|
||
|
||
.1 lda K.MLI.PARAMS+2,y
|
||
>PUSHA
|
||
dey
|
||
bpl .1
|
||
|
||
.9 rts
|
||
*/--------------------------------------
|
||
* # Remove
|
||
* Remove a file or directory
|
||
* ## C
|
||
* `int remove ( const char *pathname );`
|
||
* ## ASM
|
||
* **In:**
|
||
* `>LDYA pathname`
|
||
* `>SYSCALL remove`
|
||
* ## RETURN VALUE
|
||
*\--------------------------------------
|
||
K.Remove jsr PFT.CheckPathYA
|
||
bcs .9
|
||
|
||
>MLICALL MLIDESTROY
|
||
.9 rts
|
||
*/--------------------------------------
|
||
* # Rename
|
||
* Rename a file
|
||
* ## C
|
||
* `int rename ( const char * oldpath, const char * newpath );`
|
||
* ## ASM
|
||
* **In:**
|
||
* `>PUSHW oldpath`
|
||
* `>PUSHW newpath`
|
||
* `>SYSCALL rename`
|
||
* ## RETURN VALUE
|
||
*\--------------------------------------
|
||
K.Rename jsr PFT.CheckPath2
|
||
bcs .9
|
||
|
||
lda (pStack)
|
||
sta ZPPtr1
|
||
|
||
ldy #1
|
||
lda (pStack),y
|
||
sta ZPPtr1+1
|
||
|
||
dey ldy #0
|
||
|
||
.1 lda (ZPPtr1),y
|
||
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
|
||
|
||
.9 >RET 4
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE usr/src/sys/kernel.s.stdio
|
||
LOAD usr/src/sys/kernel.s
|
||
ASM
|