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linux/arch/sparc/lib/ffs.S
Masahiro Yamada 4cdb71b6ba sparc: replace #include <asm/export.h> with #include <linux/export.h>
Commit ddb5cdbafa ("kbuild: generate KSYMTAB entries by modpost")
deprecated <asm/export.h>, which is now a wrapper of <linux/export.h>.

Replace #include <asm/export.h> with #include <linux/export.h>.

After all the <asm/export.h> lines are converted, <asm/export.h> and
<asm-generic/export.h> will be removed.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
2023-08-22 18:12:25 +09:00

89 lines
1.3 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/export.h>
#include <linux/linkage.h>
.register %g2,#scratch
.text
.align 32
ENTRY(ffs)
brnz,pt %o0, 1f
mov 1, %o1
retl
clr %o0
nop
nop
ENTRY(__ffs)
sllx %o0, 32, %g1 /* 1 */
srlx %o0, 32, %g2
clr %o1 /* 2 */
movrz %g1, %g2, %o0
movrz %g1, 32, %o1 /* 3 */
1: clr %o2
sllx %o0, (64 - 16), %g1 /* 4 */
srlx %o0, 16, %g2
movrz %g1, %g2, %o0 /* 5 */
clr %o3
movrz %g1, 16, %o2 /* 6 */
clr %o4
and %o0, 0xff, %g1 /* 7 */
srlx %o0, 8, %g2
movrz %g1, %g2, %o0 /* 8 */
clr %o5
movrz %g1, 8, %o3 /* 9 */
add %o2, %o1, %o2
and %o0, 0xf, %g1 /* 10 */
srlx %o0, 4, %g2
movrz %g1, %g2, %o0 /* 11 */
add %o2, %o3, %o2
movrz %g1, 4, %o4 /* 12 */
and %o0, 0x3, %g1 /* 13 */
srlx %o0, 2, %g2
movrz %g1, %g2, %o0 /* 14 */
add %o2, %o4, %o2
movrz %g1, 2, %o5 /* 15 */
and %o0, 0x1, %g1 /* 16 */
add %o2, %o5, %o2 /* 17 */
xor %g1, 0x1, %g1
retl /* 18 */
add %o2, %g1, %o0
ENDPROC(ffs)
ENDPROC(__ffs)
EXPORT_SYMBOL(__ffs)
EXPORT_SYMBOL(ffs)
.section .popc_6insn_patch, "ax"
.word ffs
brz,pn %o0, 98f
neg %o0, %g1
xnor %o0, %g1, %o1
popc %o1, %o0
98: retl
nop
.word __ffs
neg %o0, %g1
xnor %o0, %g1, %o1
popc %o1, %o0
retl
sub %o0, 1, %o0
nop
.previous