diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 06:10:25 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-12-04 12:17:19 -0500 |
commit | 478b8fecda511942404ac232897a718cecd13e48 (patch) | |
tree | e022fce8ca92f93a000e1cd686255f0b126e9fd5 /arch/sparc/lib/ipcsum.S | |
parent | 18269c0fd4db9bec2668f895f21d742486ccb90f (diff) |
sparc,sparc64: unify lib/
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>
Diffstat (limited to 'arch/sparc/lib/ipcsum.S')
-rw-r--r-- | arch/sparc/lib/ipcsum.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/sparc/lib/ipcsum.S b/arch/sparc/lib/ipcsum.S new file mode 100644 index 000000000000..58ca5b9a8778 --- /dev/null +++ b/arch/sparc/lib/ipcsum.S | |||
@@ -0,0 +1,34 @@ | |||
1 | .text | ||
2 | .align 32 | ||
3 | .globl ip_fast_csum | ||
4 | .type ip_fast_csum,#function | ||
5 | ip_fast_csum: /* %o0 = iph, %o1 = ihl */ | ||
6 | sub %o1, 4, %g7 | ||
7 | lduw [%o0 + 0x00], %o2 | ||
8 | lduw [%o0 + 0x04], %g2 | ||
9 | lduw [%o0 + 0x08], %g3 | ||
10 | addcc %g2, %o2, %o2 | ||
11 | lduw [%o0 + 0x0c], %g2 | ||
12 | addccc %g3, %o2, %o2 | ||
13 | lduw [%o0 + 0x10], %g3 | ||
14 | |||
15 | addccc %g2, %o2, %o2 | ||
16 | addc %o2, %g0, %o2 | ||
17 | 1: addcc %g3, %o2, %o2 | ||
18 | add %o0, 4, %o0 | ||
19 | addccc %o2, %g0, %o2 | ||
20 | subcc %g7, 1, %g7 | ||
21 | be,a,pt %icc, 2f | ||
22 | sll %o2, 16, %g2 | ||
23 | |||
24 | lduw [%o0 + 0x10], %g3 | ||
25 | ba,pt %xcc, 1b | ||
26 | nop | ||
27 | 2: addcc %o2, %g2, %g2 | ||
28 | srl %g2, 16, %o2 | ||
29 | addc %o2, %g0, %o2 | ||
30 | xnor %g0, %o2, %o2 | ||
31 | set 0xffff, %o1 | ||
32 | retl | ||
33 | and %o2, %o1, %o0 | ||
34 | .size ip_fast_csum, .-ip_fast_csum | ||