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| author | Giuseppe Cavallaro <peppe.cavallaro@st.com> | 2009-06-18 10:38:06 +0200 |
|---|---|---|
| committer | Carmelo Amoroso <carmelo.amoroso@st.com> | 2009-09-27 09:58:52 +0200 |
| commit | 905c5ab688ad9a5cff7e014884ed6e995cee51ca (patch) | |
| tree | 80b4b301655d3808269e93420f7ce0ccf79618d7 /libc | |
| parent | af2e5dd9301f2659e6edbad8264d1260537b9cee (diff) | |
| download | uClibc-alpine-905c5ab688ad9a5cff7e014884ed6e995cee51ca.tar.bz2 uClibc-alpine-905c5ab688ad9a5cff7e014884ed6e995cee51ca.tar.xz | |
sh: add assembly memchr from Kernel
Faster assembly implementation of memchr taken from Linux kernel.
Adapted to uClibc.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/string/sh/memchr.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libc/string/sh/memchr.S b/libc/string/sh/memchr.S new file mode 100644 index 000000000..6b7142f69 --- /dev/null +++ b/libc/string/sh/memchr.S @@ -0,0 +1,30 @@ +/* $Id: memchr.S,v 1.1 2000/04/14 16:49:01 mjd Exp $ + * + * "memchr" implementation of SuperH + * + * Copyright (C) 1999 Niibe Yutaka + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* + * void *memchr(const void *s, int c, size_t n); + */ + +#include <sysdep.h> + +ENTRY(memchr) + tst r6,r6 + bt/s 2f + exts.b r5,r5 +1: mov.b @r4,r1 + cmp/eq r1,r5 + bt/s 3f + dt r6 + bf/s 1b + add #1,r4 +2: mov #0,r4 +3: rts + mov r4,r0 +END(memchr) +libc_hidden_def (memchr) |