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cc65/libsrc/runtime/ldeaxysp.s

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;
; Ullrich von Bassewitz, 22.06.1998
;
; CC65 runtime: Load a long from somewhere in the stack
;
; Beware: The optimizer knows about the register contents after calling
; this function!
;
.export ldeax0sp, ldeaxysp
.importzp sreg, sp
ldeax0sp:
ldy #3
ldeaxysp:
lda (sp),y
sta sreg+1
dey
lda (sp),y
sta sreg
dey
lda (sp),y
tax
dey
lda (sp),y
rts