File: lumod.s

package info (click to toggle)
cc65 2.19-2
  • links: PTS
  • area: main
  • in suites: forky, sid, trixie
  • size: 20,268 kB
  • sloc: ansic: 117,151; asm: 66,339; pascal: 4,248; makefile: 1,009; perl: 607
file content (34 lines) | stat: -rw-r--r-- 824 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
;
; Ullrich von Bassewitz, 27.09.1998
; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
;
; CC65 runtime: modulo operation for long unsigned ints
;

        .export         tosumod0ax, tosumodeax
        .import         getlop, udiv32
        .importzp       sreg, tmp3, tmp4, ptr2

        .macpack        cpu

tosumod0ax:                          
.if (.cpu .bitand ::CPU_ISET_65SC02)
        stz     sreg
        stz     sreg+1
.else
        ldy     #$00
        sty     sreg
        sty     sreg+1
.endif

tosumodeax:
        jsr     getlop          ; Get the paramameters
        jsr     udiv32          ; Do the division
        lda     tmp3            ; Remainder is in ptr2:tmp3:tmp4
        sta     sreg
        lda     tmp4
        sta     sreg+1
        lda     ptr2
        ldx     ptr2+1
        rts