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70 lines
1.2 KiB
ArmAsm
70 lines
1.2 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 __systime
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.import __errno
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.importzp ptr1, sreg, tmp1
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.include "errno.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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jsr __systime ; Get the time (machine dependent)
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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
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pla
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sta ptr1+1 ; Restore timep
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ora ptr1 ; 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 less than zero, set ERRNO
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@L1: ldy sreg+1
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bpl @L2
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lda #$00
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sta __errno+1
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lda #ENOSYS ; Function not implemented
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sta __errno
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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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