cc65/libsrc/gamate/clock.s

;
; clock_t clock (void);
;

        .include        "gamate.inc"
        .include        "extzp.inc"

        .export         _clock
        .forceimport    ticktock
        .importzp       sreg
        .constructor    initclock


.proc   _clock

        lda     tickcount+3
        sta     sreg+1
        lda     tickcount+2
        sta     sreg
        ldx     tickcount+1
        lda     tickcount
        rts

.endproc

        .segment        "ONCE"
initclock:
        lda     #0
        ldx     #3
@lp:    sta     tickcount,x
        dex
        bpl     @lp
        rts
conio and most other stuff working now 2015-11-29 00:14:59 +00:00			`;`
			`; clock_t clock (void);`
			`;`

			`.include "gamate.inc"`
			`.include "extzp.inc"`

			`.export _clock`
			`.forceimport ticktock`
			`.importzp sreg`
			`.constructor initclock`


			`.proc _clock`

			`lda tickcount+3`
			`sta sreg+1`
			`lda tickcount+2`
			`sta sreg`
			`ldx tickcount+1`
			`lda tickcount`
			`rts`

			`.endproc`

Renamed INITBSS to INIT and INIT to ONCE. The way we want to use the INITBSS segment - and especially the fact that it won't have the type bss on all ROM based targets - means that the name INITBSS is misleading. After all INIT is the best name from my perspective as it serves several purposes and therefore needs a rather generic name. Unfortunately this means that the current INIT segment needs to be renamed too. Looking for a short (ideally 4 letter) name I came up with ONCE as it contains all code (and data) accessed only once during initialization. 2016-03-06 20:26:22 +00:00			`.segment "ONCE"`
conio and most other stuff working now 2015-11-29 00:14:59 +00:00			`initclock:`
			`lda #0`
			`ldx #3`
			`@lp: sta tickcount,x`
			`dex`
			`bpl @lp`
			`rts`