mirror of https://github.com/A2osX/A2osX.git
240 lines
5.2 KiB
Plaintext
240 lines
5.2 KiB
Plaintext
NEW
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AUTO 3,1
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*/--------------------------------------
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* # open
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* ## C
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* `hFD open(const char *pathname, short int flags);`
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* ## ASM
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* **In:**
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* `>PUSHB flags`
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* `>LDYA pathname`
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* `>SYSCALL open`
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* ## RETURN VALUE
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* A = hFD
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* REG File created on ProDOS : T=TXT,X=$0000
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*\--------------------------------------
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K.Open jsr PFT.YAToMLIPATH
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>PULLB IO.Open.FLAGS
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lda #S.FI.T.TXT
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sta IO.Open.TYPE
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stz IO.Open.AUXTYPE
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stz IO.Open.AUXTYPE+1
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*--------------------------------------
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UNISTD.Open ldx #5 /dev/
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cpx K.MLI.PATH
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bcs .8
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.1 lda K.MLI.PATH,x
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cmp UNISTD.DEV-1,x
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bne .8
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dex
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bne .1
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*--------------------------------------
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* /DEV/xxxxxx (CDEV,BDEV,DSOCK,SSOCK,PIPE)
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*--------------------------------------
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>LDYAI K.MLI.PATH+6 skip $/dev/
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jsr K.GetDevByName
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bcs .9
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*--------------------------------------
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stx IO.hDevNod pFD set by GetDevByName
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lda (pFD) #S.FD.T
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tax
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jmp (.2-2,x)
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.2
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* .DA STDIO.IOERR REG
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.DA STDIO.IOERR DIR
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.DA IO.OPEN.CDEV
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.DA IO.OPEN.BDEV
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.DA STDIO.IOERR LNK
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.DA IO.OPEN.DSOCK
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.DA IO.OPEN.SSOCK
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.DA IO.OPEN.PIPE
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.8 jmp FS.OPEN.REG
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.9 rts
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*/--------------------------------------
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* # close
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* ## C
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* `int close(hFD fd);`
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* ## ASM
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* **In:**
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* `lda fd`
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* `>SYSCALL close`
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*\--------------------------------------
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K.Close jsr DEV.GetPFD
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UNISTD.Close lda (pFD) #S.FD.T
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tax
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jmp (.1,x)
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.1 .DA FS.CLOSE.REG
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.DA FS.CLOSE.DIR
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.DA IO.CLOSE.CDEV
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.DA IO.CLOSE.BDEV
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.DA STDIO.IOERR LNK
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.DA IO.CLOSE.DSOCK
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.DA IO.CLOSE.SSOCK
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.DA IO.CLOSE.PIPE
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*/--------------------------------------
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* # read
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* ## C
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* `int read(hFD fd, void *buf, int count);`
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* ## ASM
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* **In:**
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* `>PUSHWI count`
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* `>PUSHW buf`
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* `lda fd`
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* `>SYSCALL read`
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* ## RETURN VALUE
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* CC: Y,A = bytes read
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* CS: A = EC
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*\--------------------------------------
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K.Read jsr DEV.GetPFD
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UNISTD.Read lda (pFD) #S.FD.T
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tax
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jmp (.1,x)
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.1 .DA FS.READ.REG
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.DA STDIO.IOERR DIR
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.DA IO.READ.CDEV
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.DA STDIO.IOERR BDEV
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.DA STDIO.IOERR LNK
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.DA STDIO.IOERR DSOCK
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.DA IO.READ.SSOCK
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.DA IO.READ.PIPE
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*/--------------------------------------
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* # write
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* ## C
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* `int write(hFD fd, const void *buf, int count);`
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* ## ASM
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* **In:**
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* `>PUSHWI count`
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* `>PUSHW buf`
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* `lda fd`
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* `>SYSCALL write`
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* ## RETURN VALUE
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* CC: Y,A = bytes written
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* CS: A = EC
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*\--------------------------------------
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K.Write jsr DEV.GetPFD
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UNISTD.Write lda (pFD) #S.FD.T
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tax
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jmp (.1,x)
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.1 .DA FS.WRITE.REG
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.DA STDIO.IOERR DIR
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.DA IO.WRITE.CDEV
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.DA STDIO.IOERR BDEV
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.DA STDIO.IOERR LNK
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.DA STDIO.IOERR DSOCK
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.DA IO.WRITE.SSOCK
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.DA IO.WRITE.PIPE
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*--------------------------------------
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IO.OPEN.CDEV
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IO.OPEN.BDEV ldx #IOCTL.OPEN
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lda IO.hDevNod
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jsr DEV.pDrvJmp
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bcs IO.WRITE.CDEV.RTS
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*--------------------------------------
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IO.OPEN.DSOCK
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IO.OPEN.SSOCK lda IO.hDevNod
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clc
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rts
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*--------------------------------------
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IO.CLOSE.CDEV
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IO.CLOSE.BDEV ldx #IOCTL.CLOSE
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lda IO.hDevNod
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jmp DEV.pDrvJmp
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*--------------------------------------
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IO.READ.CDEV ldx #IOCTL.READ
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.HS 2C BIT ABS
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*--------------------------------------
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IO.WRITE.CDEV ldx #IOCTL.WRITE
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>PULLW K.S.IOCTL+S.IOCTL.BUFPTR
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>PULLW K.S.IOCTL+S.IOCTL.BYTECNT
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>LDYAI K.S.IOCTL
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jsr DEV.pDrvJmp
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bcs .9
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>LDYA K.S.IOCTL+S.IOCTL.BYTECNT
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.9
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IO.WRITE.CDEV.RTS
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rts
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*--------------------------------------
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IO.CLOSE.DSOCK
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IO.CLOSE.SSOCK
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ldy #S.FD.SSOCK.CLOSE
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.HS 2C BIT ABS
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*--------------------------------------
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IO.EOF.SSOCK ldy #S.FD.SSOCK.EOF
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.HS 2C BIT ABS
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*--------------------------------------
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IO.READ.SSOCK ldy #S.FD.SSOCK.READ
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.HS 2C BIT ABS
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*--------------------------------------
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IO.WRITE.SSOCK ldy #S.FD.SSOCK.WRITE
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lda (pFD),y
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tax Function Offset in LIB
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ldy #S.FD.SSOCK.IOHANDLER
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lda (pFD),y
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jsr K.GetMemPtr
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>STYA .1+1
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lda IO.hFD
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.1 jmp $FFFF SELF MODIFIED
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*--------------------------------------
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IO.EOF.CDEV lda #S.IOCTL.STATCODE.EOF
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jmp DEV.GetDevStatus
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*/--------------------------------------
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* # ChOwn
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* ## C
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* `short int chown(const char *pathname, short int owner, short int group);`
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* ## ASM
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* **In:**
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* `>PUSHW pathname`
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* `>PUSHB owner`
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* `>PUSHB group`
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* `>SYSCALL chown`
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* ## RETURN VALUE
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*\--------------------------------------
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K.ChOwn jsr PFT.CheckPath2
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bcs K.ChOwn.RET4
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stz K.MLI.PARAMS+3+S.FIEX.ACL read mode
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>MLICALL MLIACL
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bcs K.ChOwn.RET4
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lda (pStack)
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bmi .1
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sta K.MLI.PARAMS+3+S.FIEX.ACL.GID
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.1 ldy #1
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lda (pStack),y
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bmi .2
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sta K.MLI.PARAMS+3+S.FIEX.ACL.UID
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.2 lda #$57 write mode
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sta K.MLI.PARAMS+3+S.FIEX.ACL
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>MLICALL MLIACL
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K.ChOwn.RET4 >RET 4
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*--------------------------------------
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UNISTD.DEV .AS "/dev/"
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*--------------------------------------
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MAN
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SAVE usr/src/sys/kernel.s.unistd
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LOAD usr/src/sys/kernel.s
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ASM
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