mirror of https://github.com/cc65/cc65.git
82 lines
1.5 KiB
ArmAsm
82 lines
1.5 KiB
ArmAsm
;
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; Ullrich von Bassewitz, 12.11.2002
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;
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; time_t __fastcall__ time (time_t* timep);
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;
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.export _time
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.import decsp1, ldeaxi
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.importzp ptr1, sreg, tmp1, tmp2
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.include "time.inc"
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.code
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.proc _time
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pha
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txa
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pha ; Save timep
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; Get the time (machine dependent)
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jsr decsp1
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lda #<time
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ldx #>time
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jsr _clock_gettime
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sta tmp2
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lda #<time
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ldx #>time
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.assert timespec::tv_sec = 0, error
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jsr ldeaxi
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sta tmp1 ; Save low byte of result
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; Restore timep and check if it is NULL
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pla
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sta ptr1+1
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pla
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sta ptr1 ; Restore timep
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ora ptr1+1 ; timep == 0?
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beq @L1
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; timep is not NULL, store the result there
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ldy #3
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lda sreg+1
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sta (ptr1),y
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dey
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lda sreg
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sta (ptr1),y
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dey
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txa
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sta (ptr1),y
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dey
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lda tmp1
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sta (ptr1),y
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; If the result is != 0, return -1
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@L1: lda tmp2
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beq @L2
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tax
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sta sreg
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sta sreg+1
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rts
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; Reload the low byte of the result and return
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@L2: lda tmp1
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rts
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.endproc
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; ------------------------------------------------------------------------
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; Data
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.bss
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time: .tag timespec
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