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cc65/libsrc/runtime/land.s
uz aa7d419165 More entry points for long ops that clear the high word of the lhs.
git-svn-id: svn://svn.cc65.org/cc65/trunk@4025 b7a2c559-68d2-44c3-8de9-860c34a00d81
2009-08-15 21:06:06 +00:00

37 lines
521 B
ArmAsm

;
; Ullrich von Bassewitz, 06.08.1998
;
; CC65 runtime: and on longs
;
.export tosand0ax, tosandeax
.import addysp1
.importzp sp, sreg, tmp1
tosand0ax:
ldy #$00
sty sreg
sty sreg+1
tosandeax:
ldy #0
and (sp),y ; byte 0
sta tmp1
iny
txa
and (sp),y ; byte 1
tax
iny
lda sreg
and (sp),y ; byte 2
sta sreg
iny
lda sreg+1
and (sp),y ; byte 3
sta sreg+1
lda tmp1
jmp addysp1