1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * unsigned long __xdiv64_32(unsigned long lon
4 */
5
6 #include <linux/linkage.h>
7
8 .text
9 ENTRY(__xdiv64_32)
10 #ifdef CONFIG_CPU_LITTLE_ENDIAN
11 mov r4, r0
12 mov r5, r1
13 #else
14 mov r4, r1
15 mov r5, r0
16 #endif
17 cmp/hs r6, r1
18 bf.s 1f
19 mov #0, r2
20
21 mov r1, r2
22 mov #0, r3
23 div0u
24 .rept 32
25 rotcl r2
26 div1 r6, r3
27 .endr
28 rotcl r2
29 mul.l r6, r2
30 sts macl, r3
31 sub r3, r1
32 1:
33 div0u
34 .rept 32
35 rotcl r0
36 div1 r6, r1
37 .endr
38 #ifdef CONFIG_CPU_LITTLE_ENDIAN
39 mov r2, r1
40 rts
41 rotcl r0
42 #else
43 rotcl r0
44 mov r0, r1
45 rts
46 mov r2, r0
47 #endif
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