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cc65/libsrc/atari/getres.s

52 lines
1.1 KiB
ArmAsm

;
; Oliver Schmidt, 15.8.2018
; Christian Groessler, 27.9.2018
;
; int __fastcall__ clock_getres (clockid_t clk_id, struct timespec *res);
;
.include "atari.inc"
.include "time.inc"
.include "errno.inc"
.importzp ptr1
.import incsp1, return0, __dos_type
;----------------------------------------------------------------------------
.code
_clock_getres:
sta ptr1
stx ptr1+1
; Cleanup stack
jsr incsp1
; Check for SpartaDOS-X 4.40 or newer
ldy #SPARTADOS
cpy __dos_type
bne enosys
ldy SDX_VERSION
cpy #$44
bcc enosys
ldy #.sizeof(timespec)-1
@L1: lda time,y
sta (ptr1),y
dey
bpl @L1
jmp return0
enosys: lda #ENOSYS
; Set __errno
jmp ___directerrno
;----------------------------------------------------------------------------
; timespec struct with tv_sec set to 1 second
.rodata
time: .dword 1
.dword 0