diff options
| author | LEROY Christophe <christophe.leroy@c-s.fr> | 2015-05-19 17:18:57 +0200 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-08-07 22:59:19 -0500 |
| commit | 501c8de7b061d2dc0c21a0a79fee3eddf30af8dd (patch) | |
| tree | e06b9dcf4206de9f6a00cce28fca21929a6373ec /arch/powerpc/mm/mem.c | |
| parent | 92c985f1d76c228abe202cb3004f03c9b45860d1 (diff) | |
| download | linux-next-501c8de7b061d2dc0c21a0a79fee3eddf30af8dd.tar.gz | |
powerpc: add support for csum_add()
The C version of csum_add() as defined in include/net/checksum.h gives
the following assembly in ppc32:
0: 7c 04 1a 14 add r0,r4,r3
4: 7c 64 00 10 subfc r3,r4,r0
8: 7c 63 19 10 subfe r3,r3,r3
c: 7c 63 00 50 subf r3,r3,r0
and the following in ppc64:
0xc000000000001af8 <+0>: add r3,r3,r4
0xc000000000001afc <+4>: cmplw cr7,r3,r4
0xc000000000001b00 <+8>: mfcr r4
0xc000000000001b04 <+12>: rlwinm r4,r4,29,31,31
0xc000000000001b08 <+16>: add r3,r4,r3
0xc000000000001b0c <+20>: clrldi r3,r3,32
0xc000000000001b10 <+24>: blr
include/net/checksum.h also offers the possibility to define an arch
specific function. This patch provides a specific csum_add() inline
function.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'arch/powerpc/mm/mem.c')
0 files changed, 0 insertions, 0 deletions