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59409d99
Commit
59409d99
authored
Feb 28, 2013
by
Alessandro Rubini
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libc-functions: use uClibc code
Signed-off-by:
Alessandro Rubini
<
rubini@gnudd.com
>
parent
a82a8054
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libc-functions.c
lib/libc-functions.c
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lib/libc-functions.c
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59409d99
/*
* Alessandro Rubini for CERN, 2011 -- GPL 2 or later (it includes u-boot code)
* (FIXME: turn to LGPL by using uclibc or equivalent -- avoid rewriting :)
* All code from uClibc-0.9.32. LGPL V2.1
*/
#include <ppsi/lib.h>
...
...
@@ -11,54 +10,62 @@ int puts(const char *s)
return
0
;
}
size_t
strnlen
(
const
char
*
s
,
size_t
maxlen
)
/* libc/string/strnlen.c */
size_t
strnlen
(
const
char
*
s
,
size_t
max
)
{
int
len
=
0
;
while
(
*
(
s
++
))
len
++
;
return
len
;
register
const
char
*
p
=
s
;
while
(
max
&&
*
p
)
{
++
p
;
--
max
;
}
return
p
-
s
;
}
void
*
memcpy
(
void
*
dest
,
const
void
*
src
,
size_t
count
)
/* libc/string/memcpy.c */
void
*
memcpy
(
void
*
s1
,
const
void
*
s2
,
size_t
n
)
{
/* from u-boot-1.1.2 */
char
*
tmp
=
(
char
*
)
dest
,
*
s
=
(
char
*
)
src
;
while
(
count
--
)
*
tmp
++
=
*
s
++
;
register
char
*
r1
=
s1
;
register
const
char
*
r2
=
s2
;
return
dest
;
while
(
n
)
{
*
r1
++
=
*
r2
++
;
--
n
;
}
return
s1
;
}
int
memcmp
(
const
void
*
cs
,
const
void
*
ct
,
size_t
count
)
/* libc/string/memcmp.c */
int
memcmp
(
const
void
*
s1
,
const
void
*
s2
,
size_t
n
)
{
/* from u-boot-1.1.2 */
const
unsigned
char
*
su1
,
*
su
2
;
int
r
es
=
0
;
register
const
unsigned
char
*
r1
=
s1
;
register
const
unsigned
char
*
r2
=
s
2
;
int
r
=
0
;
for
(
su1
=
cs
,
su2
=
ct
;
0
<
count
;
++
su1
,
++
su2
,
count
--
)
if
((
res
=
*
su1
-
*
su2
)
!=
0
)
break
;
return
res
;
while
(
n
--
&&
((
r
=
((
int
)(
*
r1
++
))
-
*
r2
++
)
==
0
))
;
return
r
;
}
void
*
memset
(
void
*
s
,
int
c
,
size_t
count
)
/* libc/string/memset.c */
void
*
memset
(
void
*
s
,
int
c
,
size_t
n
)
{
/* from u-boot-1.1.2 */
char
*
xs
=
(
char
*
)
s
;
while
(
count
--
)
*
xs
++
=
c
;
register
unsigned
char
*
p
=
s
;
while
(
n
)
{
*
p
++
=
(
unsigned
char
)
c
;
--
n
;
}
return
s
;
}
char
*
strcpy
(
char
*
dest
,
const
char
*
src
)
/* libc/string/strcpy.c */
char
*
strcpy
(
char
*
s1
,
const
char
*
s2
)
{
/* from u-boot-1.1.2 */
char
*
tmp
=
dest
;
register
char
*
s
=
s1
;
while
(
(
*
dest
++
=
*
src
++
)
!=
'\0'
)
/* nothing */
;
return
tmp
;
while
(
(
*
s
++
=
*
s2
++
)
!=
0
)
;
return
s1
;
}
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