48 lines
586 B
ArmAsm
48 lines
586 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* unsigned long __xdiv64_32(unsigned long long n, unsigned long d);
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
.text
|
|
ENTRY(__xdiv64_32)
|
|
#ifdef CONFIG_CPU_LITTLE_ENDIAN
|
|
mov r4, r0
|
|
mov r5, r1
|
|
#else
|
|
mov r4, r1
|
|
mov r5, r0
|
|
#endif
|
|
cmp/hs r6, r1
|
|
bf.s 1f
|
|
mov #0, r2
|
|
|
|
mov r1, r2
|
|
mov #0, r3
|
|
div0u
|
|
.rept 32
|
|
rotcl r2
|
|
div1 r6, r3
|
|
.endr
|
|
rotcl r2
|
|
mul.l r6, r2
|
|
sts macl, r3
|
|
sub r3, r1
|
|
1:
|
|
div0u
|
|
.rept 32
|
|
rotcl r0
|
|
div1 r6, r1
|
|
.endr
|
|
#ifdef CONFIG_CPU_LITTLE_ENDIAN
|
|
mov r2, r1
|
|
rts
|
|
rotcl r0
|
|
#else
|
|
rotcl r0
|
|
mov r0, r1
|
|
rts
|
|
mov r2, r0
|
|
#endif
|