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;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Convert tos from int to long
;
.export tosulong, toslong
.import decsp2
.importzp sp
.macpack cpu
; Convert TOS from int to long
tosulong:
pha
jsr decsp2 ; Make room
ldy #2
lda (sp),y
.if (.cpu .bitand CPU_ISET_65SC02)
sta (sp) ; 65C02 version
iny ; Y = 3
.else
ldy #0
sta (sp),y
ldy #3
.endif
lda (sp),y
toslong1:
ldy #1
sta (sp),y
lda #0 ; Zero extend
toslong2:
iny
sta (sp),y
iny
sta (sp),y
pla
rts
toslong:
pha
jsr decsp2 ; Make room
ldy #2
lda (sp),y
.if (.cpu .bitand CPU_ISET_65SC02)
sta (sp) ; 65C02 version
iny ; Y = 3
.else
ldy #0
sta (sp),y
ldy #3
.endif
lda (sp),y
bpl toslong1 ; Jump if positive, high word is zero
ldy #1
sta (sp),y
lda #$FF
bne toslong2 ; Branch always
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