xref: /openbmc/linux/arch/sh/lib/div64.S (revision 367b8112)
1/*
2 * unsigned long __xdiv64_32(unsigned long long n, unsigned long d);
3 */
4
5#include <linux/linkage.h>
6
7.text
8ENTRY(__xdiv64_32)
9#ifdef CONFIG_CPU_LITTLE_ENDIAN
10	mov	r4, r0
11	mov	r5, r1
12#else
13	mov	r4, r1
14	mov	r5, r0
15#endif
16	cmp/hs	r6, r1
17	bf.s	1f
18	 mov	#0, r2
19
20	mov	r1, r2
21	mov	#0, r3
22	div0u
23	.rept	32
24	rotcl	r2
25	div1	r6, r3
26	.endr
27	rotcl	r2
28	mul.l	r6, r2
29	sts	macl, r3
30	sub	r3, r1
311:
32	div0u
33	.rept	32
34	rotcl	r0
35	div1	r6, r1
36	.endr
37#ifdef CONFIG_CPU_LITTLE_ENDIAN
38	mov	r2, r1
39	rts
40	 rotcl	r0
41#else
42	rotcl	r0
43	mov	r0, r1
44	rts
45	 mov	r2, r0
46#endif
47