linux/arch/sparc/lib/hweight.S
David S. Miller ef7c4d4675 sparc: Use popc if possible for hweight routines.
Just like powerpc, we code patch at boot time.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-02 21:28:50 -07:00

52 lines
846 B
ArmAsm

#include <linux/linkage.h>
.text
.align 32
ENTRY(__arch_hweight8)
ba,pt %xcc, __sw_hweight8
nop
nop
ENDPROC(__arch_hweight8)
.section .popc_3insn_patch, "ax"
.word __arch_hweight8
sllx %o0, 64-8, %g1
retl
popc %g1, %o0
.previous
ENTRY(__arch_hweight16)
ba,pt %xcc, __sw_hweight16
nop
nop
ENDPROC(__arch_hweight16)
.section .popc_3insn_patch, "ax"
.word __arch_hweight16
sllx %o0, 64-16, %g1
retl
popc %g1, %o0
.previous
ENTRY(__arch_hweight32)
ba,pt %xcc, __sw_hweight32
nop
nop
ENDPROC(__arch_hweight32)
.section .popc_3insn_patch, "ax"
.word __arch_hweight32
sllx %o0, 64-32, %g1
retl
popc %g1, %o0
.previous
ENTRY(__arch_hweight64)
ba,pt %xcc, __sw_hweight64
nop
nop
ENDPROC(__arch_hweight64)
.section .popc_3insn_patch, "ax"
.word __arch_hweight64
retl
popc %o0, %o0
nop
.previous