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Added real-time clock functions to the cx16 library.

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Greg King
2019-12-27 18:07:37 -05:00
parent f067c4530f
commit b56ba8f073
6 changed files with 229 additions and 48 deletions
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56
libsrc/cx16/gettime.s Normal file
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;
; 2019-12-27, Greg King
;
; int __fastcall__ clock_gettime (clockid_t clk_id, struct timespec *tp);
;
.include "time.inc"
.include "cx16.inc"
.import pushax, pusheax, tosmul0ax, steaxspidx, incsp1, return0
.import TM, load_jiffy
.import CLOCK_GET_DATE_TIME
;----------------------------------------------------------------------------
.proc _clock_gettime
jsr pushax
jsr pushax
jsr CLOCK_GET_DATE_TIME
lda gREG::r0L
sta TM + tm::tm_year
lda gREG::r0H
dec a
sta TM + tm::tm_mon
lda gREG::r1L
sta TM + tm::tm_mday
lda gREG::r1H
sta TM + tm::tm_hour
lda gREG::r2L
sta TM + tm::tm_min
lda gREG::r2H
sta TM + tm::tm_sec
lda #<TM
ldx #>TM
jsr _mktime
ldy #timespec::tv_sec
jsr steaxspidx ; Pops address pushed by 2. pushax
jsr load_jiffy
jsr pusheax
lda gREG::r3L
ldx #>$0000
jsr tosmul0ax
ldy #timespec::tv_nsec
jsr steaxspidx ; Pops address pushed by 1. pushax
jsr incsp1
jmp return0
.endproc