linux_dsm_epyc7002/arch/sparc/lib/hweight.S
David S. Miller 9289ea7f95 sparc64: Use indirect calls in hamming weight stubs
Otherwise, depending upon link order, the branch relocation
limits could be exceeded.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-30 08:59:55 +09:00

57 lines
1.1 KiB
ArmAsm

#include <linux/linkage.h>
#include <asm/export.h>
.text
.align 32
ENTRY(__arch_hweight8)
sethi %hi(__sw_hweight8), %g1
jmpl %g1 + %lo(__sw_hweight8), %g0
nop
ENDPROC(__arch_hweight8)
EXPORT_SYMBOL(__arch_hweight8)
.section .popc_3insn_patch, "ax"
.word __arch_hweight8
sllx %o0, 64-8, %g1
retl
popc %g1, %o0
.previous
ENTRY(__arch_hweight16)
sethi %hi(__sw_hweight16), %g1
jmpl %g1 + %lo(__sw_hweight16), %g0
nop
ENDPROC(__arch_hweight16)
EXPORT_SYMBOL(__arch_hweight16)
.section .popc_3insn_patch, "ax"
.word __arch_hweight16
sllx %o0, 64-16, %g1
retl
popc %g1, %o0
.previous
ENTRY(__arch_hweight32)
sethi %hi(__sw_hweight32), %g1
jmpl %g1 + %lo(__sw_hweight32), %g0
nop
ENDPROC(__arch_hweight32)
EXPORT_SYMBOL(__arch_hweight32)
.section .popc_3insn_patch, "ax"
.word __arch_hweight32
sllx %o0, 64-32, %g1
retl
popc %g1, %o0
.previous
ENTRY(__arch_hweight64)
sethi %hi(__sw_hweight16), %g1
jmpl %g1 + %lo(__sw_hweight16), %g0
nop
ENDPROC(__arch_hweight64)
EXPORT_SYMBOL(__arch_hweight64)
.section .popc_3insn_patch, "ax"
.word __arch_hweight64
retl
popc %o0, %o0
nop
.previous