mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 09:36:25 +00:00
478b8fecda
o Renamed files in sparc64 to <name>_64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
35 lines
658 B
ArmAsm
35 lines
658 B
ArmAsm
.text
|
|
.align 32
|
|
.globl ip_fast_csum
|
|
.type ip_fast_csum,#function
|
|
ip_fast_csum: /* %o0 = iph, %o1 = ihl */
|
|
sub %o1, 4, %g7
|
|
lduw [%o0 + 0x00], %o2
|
|
lduw [%o0 + 0x04], %g2
|
|
lduw [%o0 + 0x08], %g3
|
|
addcc %g2, %o2, %o2
|
|
lduw [%o0 + 0x0c], %g2
|
|
addccc %g3, %o2, %o2
|
|
lduw [%o0 + 0x10], %g3
|
|
|
|
addccc %g2, %o2, %o2
|
|
addc %o2, %g0, %o2
|
|
1: addcc %g3, %o2, %o2
|
|
add %o0, 4, %o0
|
|
addccc %o2, %g0, %o2
|
|
subcc %g7, 1, %g7
|
|
be,a,pt %icc, 2f
|
|
sll %o2, 16, %g2
|
|
|
|
lduw [%o0 + 0x10], %g3
|
|
ba,pt %xcc, 1b
|
|
nop
|
|
2: addcc %o2, %g2, %g2
|
|
srl %g2, 16, %o2
|
|
addc %o2, %g0, %o2
|
|
xnor %g0, %o2, %o2
|
|
set 0xffff, %o1
|
|
retl
|
|
and %o2, %o1, %o0
|
|
.size ip_fast_csum, .-ip_fast_csum
|