mirror of https://github.com/GnoConsortium/gno.git
506 lines
7.8 KiB
NASM
506 lines
7.8 KiB
NASM
* $Id: console.asm,v 1.1 1998/02/02 08:17:54 taubert Exp $
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************************************************************
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*
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* CONSOLE device driver
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*
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************************************************************
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case on
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mcopy ../drivers/port.mac
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copy ../gno/inc/tty.inc
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copy ../drivers/console.equates
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copy ../drivers/kern.equates
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**************************************************************************
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consoleSem gequ $3C ; output code semaphore
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ConsoleHeader START
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contty ENTRY
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ds t_open
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* Line Discipline entry points
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dc i4'ConInit'
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dc i4'ConDeInit'
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dc i4'ConIOCTL'
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dc i4'0' ; ttread and ttwrite must be
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dc i4'0' ; set up by InstallDriver
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dc i4'CON_mutex'
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dc i4'CON_demutex'
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dc i4'CON_out_enq'
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dc i4'CON_in_enq'
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dc i4'CON_out_deq'
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dc i4'CON_in_deq'
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dc i4'CON_size_inq'
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dc i4'CON_size_outq'
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ds t_signalIO-editInd
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dc i4'CON_signalIO'
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dc i2'$FFFF' ; noone selecting
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dc i4'CON_select'
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dc i4'0' ; t_selwakeup set during install
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END
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CON_mutex START KERN2
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CON_demutex ENTRY
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CON_in_enq ENTRY
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CON_out_deq ENTRY
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rtl
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END
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CON_in_deq START KERN2
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; using InOutData
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; phd
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; lda >InOutDP
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; tcd
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jsl KEYIN
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; pld
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rtl
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END
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CON_select START KERN2
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res equ 0
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subroutine (2:ttyn,2:which,2:pid),2
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lda #1
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sta res
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lda which ; which I/O to check?
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cmp #SEL_READ
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bne trywrite
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jsl CON_size_inq ; # bytes in in q
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cmp #0
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bne done
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willwait anop
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* record that the process wants to do I/O
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lda >contty+t_select_proc ; see if someone's here already
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cmp #$FFFF ; nope
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beq nocollision
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cmp pid ; is it us?
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beq nocollision
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lda >contty+privFlags
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ora #TS_RCOLL
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sta >contty+privFlags
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bra none
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nocollision anop
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lda pid ; set select_proc field to
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sta >contty+t_select_proc ; current process ID
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bra none
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trywrite cmp #SEL_WRITE
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bne doexcept
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bra done ; we can always write to console
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doexcept anop ; there are no exceptions on console
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none lda #0 ; no data, return 0
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sta res
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done anop
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return 2:res
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END
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CON_size_inq START KERN2
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using ADBData
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php
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sei
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short m
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lda >head
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sec
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sbc >tail
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long m
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and #$00FF
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plp
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rtl
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END
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CON_size_outq START KERN2
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lda #0
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rtl
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END
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CON_out_enq START KERN2
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; using InOutData
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; phd
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; lda >InOutDP
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; tcd
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; lda 6,s
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lda 4,s
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jsl COUT
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; pld
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lda 2,s
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sta 4,s
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lda 1,s
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sta 3,s
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pla
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rtl
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END
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* This function does nothing in the console driver
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CON_signalIO START KERN2
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lda 2,s
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sta 4,s
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lda 1,s
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sta 3,s
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pla
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rtl
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END
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ConInit START
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dTermioPtr equ 0
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result equ 4
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subroutine (2:devNum),6
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ld4 contty,dTermioPtr
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stz result
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* Initialize default values for terminal settings
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ldy #sg_flags
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lda #CRMOD+ECHO
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sta [dTermioPtr],y
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short m
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lda #0
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sta [dTermioPtr] ; ispeed
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ldy #sg_ospeed
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sta [dTermioPtr],y ; ospeed
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ldy #t_intrc
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lda #'C'-64
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sta [dTermioPtr],y ; t_intrc
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ldy #t_suspc
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lda #'Z'-64
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sta [dTermioPtr],y
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ldy #t_quitc
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lda #'\'-64
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sta [dTermioPtr],y
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ldy #t_startc
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lda #'Q'-64
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sta [dTermioPtr],y
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ldy #t_stopc
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lda #'S'-64
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sta [dTermioPtr],y
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ldy #t_eofc
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lda #'D'-64
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sta [dTermioPtr],y
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ldy #t_brkc
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lda #-1
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sta [dTermioPtr],y
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ldy #t_dsuspc
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lda #'Y'-64
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sta [dTermioPtr],y
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ldy #t_rprntc
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lda #'R'-64
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sta [dTermioPtr],y
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ldy #sg_erase
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lda #$7F
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sta [dTermioPtr],y
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long m
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ldy #local
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lda #LCRTERA+LCTLECH
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sta [dTermioPtr],y
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ldy #ws_row
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lda #24
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sta [dTermioPtr],y
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ldy #ws_col
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lda #80
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sta [dTermioPtr],y
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ldy #ws_xpixel
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lda #0
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sta [dTermioPtr],y
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ldy #ws_ypixel
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sta [dTermioPtr],y
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return 2:result
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END
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ConDeInit START
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subroutine (2:devNum),0
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return
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END
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* Character translation & such is handled here, to keep it out
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* of TextTool's silly assumptions. Fortunately, pipes donna have this
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* prollem.
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ConIOCTL START KERN2
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using ADBData
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using InOutData
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retval equ 0
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subroutine (4:tioc,4:dataPtr,2:devNum),2
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lda tioc
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and #$FF00
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xba
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cmp #'f'
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beq chkfile
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cmp #'t'
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beq tioctl
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err lda #-1
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sta retval
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jmp goaway
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chkfile lda tioc
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and #$7F
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cmp #127
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bne err
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php
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sei
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short m
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lda >head
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sec
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sbc >tail
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long m
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and #$00FF
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* bpl okey
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* eor #$FFFF
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* inc a
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*okey anop
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sta [dataPtr]
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plp
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stz retval
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jmp goaway
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tioctl anop
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lda tioc
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and #$7F
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cmp #25
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bcc okay2
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eor #$7F
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cmp #26
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bcc okay1
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jmp invalid
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okay1 anop
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asl a
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asl a
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inc a
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inc a
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tax
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jmp (tNTable,x)
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okay2 anop
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asl a
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asl a
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inc a
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inc a
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tax
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jmp (tPTable,x)
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goaway return 2:retval
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tPTable anop
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dc i2'0',a2'TIOCGETD'
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dc i2'1',a2'TIOCSETD'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'8',a2'TIOCGETP'
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dc i2'9',a2'TIOCSETP'
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dc i2'10',a2'TIOCSETN'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'16',a2'TIOCFLUSH'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'19',a2'TIOCSETK'
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dc i2'20',a2'TIOCGETK'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'23',a2'TIOCSVECT'
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dc i2'24',a2'TIOCGVECT'
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tNTable anop
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dc i2'127',a2'invalid'
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dc i2'126',a2'invalid'
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dc i2'125',a2'invalid'
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dc i2'124',a2'invalid'
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dc i2'123',a2'invalid'
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dc i2'122',a2'invalid'
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dc i2'121',a2'invalid'
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dc i2'120',a2'invalid'
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dc i2'119',a2'invalid'
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dc i2'118',a2'invalid'
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dc i2'117',a2'invalid'
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dc i2'116',a2'invalid'
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dc i2'115',a2'TIOCOUTQ'
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dc i2'114',a2'TIOCSTI'
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dc i2'113',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'111',a2'TIOCSTOP'
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dc i2'110',a2'TIOCSTART'
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dc i2'109',a2'invalid'
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dc i2'108',a2'invalid'
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dc i2'107',a2'invalid'
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dc i2'106',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'104',a2'invalid'
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dc i2'103',a2'invalid'
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invalid lda #-1
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sta retval
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jmp goaway
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*****************************************************
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dc i2'0',a2'TIOCGETD'
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dc i2'1',a2'TIOCSETD'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'-1',a2'invalid'
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dc i2'8',a2'TIOCGETP'
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dc i2'9',a2'TIOCSETP'
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dc i2'10',a2'TIOCSETN'
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TIOCGETD anop
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TIOCSETD anop
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TIOCSETN anop
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TIOCSETP anop
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TIOCGETP stz retval
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jmp goaway
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TIOCGVECT anop
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php
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sei
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lda >COUT+1
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sta [dataPtr]
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ldy #2
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lda >COUT+3
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and #$00FF
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sta [dataPtr],y
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ldy #4
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lda >KEYIN+1
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sta [dataPtr],y
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ldy #6
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lda >KEYIN+3
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and #$00FF
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sta [dataPtr],y
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plp
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stz retval
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jmp goaway
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TIOCSVECT anop
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php
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sei
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lda [dataPtr]
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sta >COUT+1
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ldy #1
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lda [dataPtr],y
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sta >COUT+2
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ldy #4
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lda [dataPtr],y
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sta >KEYIN+1
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iny
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lda [dataPtr],y
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sta >KEYIN+2
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plp
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stz retval
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jmp goaway
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TIOCOUTQ lda #0
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sta [dataPtr]
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stz retval
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jmp goaway
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TIOCSTOP lda >OutStopped
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bne isStopped
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lda #1
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sta >OutStopped
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isStopped stz retval
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jmp goaway
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TIOCSTART lda >OutStopped
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beq isStopped
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lda #0
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sta >OutStopped
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bra isStopped
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TIOCFLUSH php
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sei
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short m
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lda >tail
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sta >head
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long m
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plp
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stz retval
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jmp goaway
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* simulate terminal input (this code is borrowed from INOUT.ASM/OurADB
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TIOCSTI anop
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php
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sei
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phd
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lda >InOutDP
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tcd
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short m
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lda >head
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tax
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lda [dataPtr]
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sta >keybuf,x
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ldy #1
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lda [dataPtr],y
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sta >modbuf,x
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inx
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txa
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sta >head
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; this chunk unblocks any process that was waiting on keyboard input
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long ai
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lda >blockCP
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cmp #$FFFF
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beq check4select
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ldy #2
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lda [IODP_procPtr],y
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cmp #pBlocked ; is it still blocked?
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bne done ; nope, leave it alone
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lda #pReady
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sta [IODP_procPtr],y ; restart the process
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lda #$FFFF
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sta >blockCP
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; check for select here.
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check4select lda >contty+t_select_proc
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cmp #$FFFF
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beq done
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* someone is selecting on us, so call selwakeup with the process ID
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* and our collision flag
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pha
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lda >contty+privFlags
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and #TS_RCOLL
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pha
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jsl contty+t_selwakeup
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lda >contty+privFlags
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and #TS_RCOLL.EOR.$FFFF
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sta >contty+privFlags
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lda #$FFFF
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sta >contty+t_select_proc
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done anop
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pld
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plp
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stz retval
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jmp goaway
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TIOCSETK anop
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lda [dataPtr]
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sta >keyMaps
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stz retval
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jmp goaway
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TIOCGETK anop
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lda >keyMaps
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sta [dataPtr]
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stz retval
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jmp goaway
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END
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