mirror of https://github.com/cc65/cc65.git
64 lines
1.2 KiB
ArmAsm
64 lines
1.2 KiB
ArmAsm
;
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; Oliver Schmidt, 15.08.2018
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;
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; int __fastcall__ clock_getres (clockid_t clk_id, struct timespec *res);
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;
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.import __dos_type
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.import incsp1, return0
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.include "time.inc"
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.include "zeropage.inc"
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.include "errno.inc"
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.include "mli.inc"
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_clock_getres:
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sta ptr1
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stx ptr1+1
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; Cleanup stack
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jsr incsp1
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; Check for ProDOS 8
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lda __dos_type
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beq enosys
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; Presume day resolution
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ldx #<day_res
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ldy #>day_res
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; Check for realtme clock
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lda MACHID
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lsr a
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bcc :+
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; Switch to minute resolution
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ldx #<min_res
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ldy #>min_res
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; Copy timespec
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: stx ptr2
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sty ptr2+1
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ldy #.sizeof(timespec)-1
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: lda (ptr2),y
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sta (ptr1),y
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dey
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bpl :-
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; Return success
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jmp return0
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; Load errno code
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enosys: lda #ENOSYS
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; Set __errno
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jmp ___directerrno
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.rodata
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min_res:.dword 60
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.dword 0
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day_res:.dword 60 * 60 * 24
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.dword 0
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