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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/sh/lib/strlen.S | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
| download | FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.gz FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.bz2 FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.zip | |
dirty fix to merging
Diffstat (limited to 'arch/sh/lib/strlen.S')
| -rw-r--r-- | arch/sh/lib/strlen.S | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/sh/lib/strlen.S b/arch/sh/lib/strlen.S new file mode 100644 index 00000000..1bcc13f0 --- /dev/null +++ b/arch/sh/lib/strlen.S @@ -0,0 +1,70 @@ +/* $Id: strlen.S,v 1.2 2001/06/29 14:07:15 gniibe Exp $ + * + * "strlen" implementation of SuperH + * + * Copyright (C) 1999 Kaz Kojima + * + */ + +/* size_t strlen (const char *s) */ + +#include <linux/linkage.h> +ENTRY(strlen) + mov r4,r0 + and #3,r0 + tst r0,r0 + bt/s 1f + mov #0,r2 + + add #-1,r0 + shll2 r0 + shll r0 + braf r0 + nop + + mov.b @r4+,r1 + tst r1,r1 + bt 8f + add #1,r2 + + mov.b @r4+,r1 + tst r1,r1 + bt 8f + add #1,r2 + + mov.b @r4+,r1 + tst r1,r1 + bt 8f + add #1,r2 + +1: + mov #0,r3 +2: + mov.l @r4+,r1 + cmp/str r3,r1 + bf/s 2b + add #4,r2 + + add #-4,r2 +#ifndef __LITTLE_ENDIAN__ + swap.b r1,r1 + swap.w r1,r1 + swap.b r1,r1 +#endif + extu.b r1,r0 + tst r0,r0 + bt/s 8f + shlr8 r1 + add #1,r2 + extu.b r1,r0 + tst r0,r0 + bt/s 8f + shlr8 r1 + add #1,r2 + extu.b r1,r0 + tst r0,r0 + bt 8f + add #1,r2 +8: + rts + mov r2,r0 |