A2osX/SBIN/INITD.S.txt

NEW
PREFIX
AUTO 4,1								Enable MASM3 auto line num
				.LIST OFF
				.OP	65C02				Target CPU, must match CPU level in header
				.OR	$2000				usualy $2000, but any value > $100 allowed
				.TF sbin/initd
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
*--------------------------------------
* Zero Page Segment, up to 32 bytes
*--------------------------------------
				.DUMMY
				.OR ZPBIN
ZS.START
* MyPtr			.BS 2
ZS.END
				.ED
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp (.1,x)
				.DA #$61				6502,Level 1 (65c02)
				.DA #1					BIN Layout Version 1
				.DA #0					S.PS.F.EVENT
				.DA #0
				.DA CS.END-CS.START		Code Size (without Constants)
				.DA DS.END-DS.START		Data SegmentSize
				.DA #16					Stack Size
				.DA #ZS.END-ZS.START	Zero Page Size
				.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1				.DA CS.INIT
				.DA CS.RUN
				.DA CS.DOEVENT		
				.DA	CS.QUIT
L.MSG.CTRLR		.DA MSG.CTRLR
L.MSG.ETCINIT	.DA MSG.ETCINIT
L.BINSHELL		.DA BINSHELL
L.ETCINIT		.DA ETCINIT		
L.MSG.RUNNING	.DA MSG.RUNNING		
				.DA 0
*--------------------------------------
* Called once at process creation
* Put code for loading LIB here
*--------------------------------------
CS.INIT			clc
				rts
*--------------------------------------
* Called until exit with CS
* if RUN exits with CC, RN entered again
*--------------------------------------
CS.RUN			ldy #S.PS.PID
				lda (pPS),y
				cmp #1
				bne .9
				>SYSCALL getchar
				bcs .1
				cmp #$12					CTRL-R for Root mode
				bne .1
				>LDYA L.MSG.CTRLR
				>SYSCALL puts
				>PUSHW L.BINSHELL
				>PUSHBI S.PS.F.HOLD
				>SYSCALL ExecL
				>SLEEP
.1				>LDYA L.MSG.ETCINIT
				>SYSCALL puts
				>PUSHW L.ETCINIT
				>PUSHBI S.PS.F.HOLD
				>SYSCALL ExecL
				>SLEEP
				>LDYA L.MSG.RUNNING
				>SYSCALL puts
				ldy #S.PS.F.HOLD
				ora (pPS),y
				sta (pPS),y
				>SLEEP
				lda #0
				sec
				rts
.9				lda #E.SYN
				sec
				rts
*--------------------------------------
* Called if option S.PS.F.EVENT enabled in Header
* Timer Event : every 10th seconds
*--------------------------------------
CS.DOEVENT		sec
				rts
*--------------------------------------
* Called once, when RUN exited with CS
* Put code for unloading LIB here
*--------------------------------------
CS.QUIT			clc
				rts
*--------------------------------------
CS.END
*--------------------------------------
* Initialized DATA
*--------------------------------------
MSG.CTRLR		.AZ "INITD:Ctrl-R Pressed, entering ROOT mode..."
MSG.ETCINIT		.AS "INITD:Executing ETC/INIT Script:"
ETCINIT			.AZ "${ROOT}etc/init"
BINSHELL		.AZ "${ROOT}bin/sh"
MSG.RUNNING		.AZ "INITD:Running..."
MSH.SHUTDOWN	.AZ "INITD:Shutting down..."
*--------------------------------------
* Per Process DATA segement (0 filled before INIT)
*--------------------------------------
				.DUMMY
				.OR 0
DS.START
DS.END
				.ED
*--------------------------------------
MAN
SAVE USR/SRC/SBIN/INITD
ASM