android_kernel_xiaomi_sm8350/arch/sh/lib/div64.S
Paul Mundt 04c7d9579f sh: Correct __xdiv64_32/div64_32 return value size.
These should be returning a uint32_t, whereas they were erroneously
returning a u64 before. As the register sizes are 32-bits, this doesn't
really make a lot of sense.

Reported-by: Katsuya MATSUBARA <matsu@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-06 10:58:04 +09:00

47 lines
547 B
ArmAsm

/*
* 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