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;
; Ullrich von Bassewitz, 06.08.1998
; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
;
; CC65 runtime: xor on longs
;
.export tosxor0ax, tosxoreax
.import addysp1
.importzp sp, sreg, tmp1
.macpack cpu
tosxor0ax:
.if (.cpu .bitand ::CPU_ISET_65SC02)
stz sreg
stz sreg+1
.else
ldy #$00
sty sreg
sty sreg+1
.endif
tosxoreax:
.if (.cpu .bitand ::CPU_ISET_65SC02)
eor (sp) ; byte 0
ldy #1
.else
ldy #0
eor (sp),y ; byte 0
iny
.endif
sta tmp1
txa
eor (sp),y ; byte 1
tax
iny
lda sreg
eor (sp),y ; byte 2
sta sreg
iny
lda sreg+1
eor (sp),y ; byte 3
sta sreg+1
lda tmp1
jmp addysp1
|
