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419eb700b5
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.
34 lines
574 B
ArmAsm
34 lines
574 B
ArmAsm
;
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; clock_t clock (void);
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;
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.include "pce.inc"
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.include "extzp.inc"
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.export _clock
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.forceimport ticktock
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.importzp sreg
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.constructor initclock
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.proc _clock
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lda tickcount+3
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sta sreg+1
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lda tickcount+2
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sta sreg
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ldx tickcount+1
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lda tickcount
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rts
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.endproc
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.segment "ONCE"
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initclock:
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lda #0
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ldx #3
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@lp: sta tickcount,x
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dex
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bpl @lp
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rts
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