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56 lines
1.3 KiB
ArmAsm
56 lines
1.3 KiB
ArmAsm
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; 2019-12-27, Greg King
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;
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; int __fastcall__ clock_settime (clockid_t clk_id, const struct timespec *tp);
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;
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.include "time.inc"
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.include "cx16.inc"
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.importzp ptr1
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.import pushax, pusheax, ldax0sp, ldeaxidx
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.import tosdiveax, incsp3, return0
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.import load_jiffy
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.import CLOCK_SET_DATE_TIME
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.macro COPY reg, offset
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ldy #offset
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lda (ptr1),y
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sta gREG::reg
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.endmac
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;----------------------------------------------------------------------------
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.proc _clock_settime
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jsr pushax
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.assert timespec::tv_sec = 0, error
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jsr _localtime
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sta ptr1
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stx ptr1+1
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COPY r0L, tm::tm_year
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COPY r0H, tm::tm_mon
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inc gREG::r0H
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COPY r1L, tm::tm_mday
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COPY r1H, tm::tm_hour
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COPY r2L, tm::tm_min
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COPY r2H, tm::tm_sec
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jsr ldax0sp ; Get tp
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ldy #timespec::tv_nsec+3
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jsr ldeaxidx ; Get nanoseconds
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jsr pusheax
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jsr load_jiffy
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jsr tosdiveax
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sta gREG::r3L ; Put number of jiffies
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jsr CLOCK_SET_DATE_TIME
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jsr incsp3
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jmp return0
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.endproc
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