mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-25 03:36:02 +00:00
29358dc593
Before the MMU is up, all reads/writes must be aligned; the optimized memcpy implementation does not guarantee all reads/writes it performs are aligned. This commit splits the libc impl to be separate for kernel/kernel_ldr, and so now only kernel will use the optimized impl. This is safe, as the MMU is brought up before kernel begins executing.
673 lines
16 KiB
C
673 lines
16 KiB
C
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <string.h>
|
|
#include <stddef.h>
|
|
#include <limits.h>
|
|
#include "kern_libc_config.h"
|
|
|
|
/* Note: copied from newlib */
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
FUNCTION
|
|
<<memmove>>---move possibly overlapping memory
|
|
INDEX
|
|
memmove
|
|
SYNOPSIS
|
|
#include <string.h>
|
|
void *memmove(void *<[dst]>, const void *<[src]>, size_t <[length]>);
|
|
DESCRIPTION
|
|
This function moves <[length]> characters from the block of
|
|
memory starting at <<*<[src]>>> to the memory starting at
|
|
<<*<[dst]>>>. <<memmove>> reproduces the characters correctly
|
|
at <<*<[dst]>>> even if the two areas overlap.
|
|
RETURNS
|
|
The function returns <[dst]> as passed.
|
|
PORTABILITY
|
|
<<memmove>> is ANSI C.
|
|
<<memmove>> requires no supporting OS subroutines.
|
|
QUICKREF
|
|
memmove ansi pure
|
|
*/
|
|
|
|
/* Nonzero if either X or Y is not aligned on a "long" boundary. */
|
|
#define UNALIGNED(X, Y) \
|
|
(((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
|
|
|
|
/* How many bytes are copied each iteration of the 4X unrolled loop. */
|
|
#define BIGBLOCKSIZE (sizeof (long) << 2)
|
|
|
|
/* How many bytes are copied each iteration of the word copy loop. */
|
|
#define LITTLEBLOCKSIZE (sizeof (long))
|
|
|
|
/* Threshhold for punting to the byte copier. */
|
|
#undef TOO_SMALL
|
|
#define TOO_SMALL(LEN) ((LEN) < BIGBLOCKSIZE)
|
|
|
|
#if MESOSPHERE_LIBC_MEMMOVE_GENERIC
|
|
|
|
/*SUPPRESS 20*/
|
|
void *
|
|
//__inhibit_loop_to_libcall
|
|
__attribute__((weak))
|
|
memmove (void *dst_void,
|
|
const void *src_void,
|
|
size_t length)
|
|
{
|
|
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
|
char *dst = dst_void;
|
|
const char *src = src_void;
|
|
|
|
if (src < dst && dst < src + length)
|
|
{
|
|
/* Have to copy backwards */
|
|
src += length;
|
|
dst += length;
|
|
while (length--)
|
|
{
|
|
*--dst = *--src;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (length--)
|
|
{
|
|
*dst++ = *src++;
|
|
}
|
|
}
|
|
|
|
return dst_void;
|
|
#else
|
|
char *dst = dst_void;
|
|
const char *src = src_void;
|
|
long *aligned_dst;
|
|
const long *aligned_src;
|
|
|
|
if (src < dst && dst < src + length)
|
|
{
|
|
/* Destructive overlap...have to copy backwards */
|
|
src += length;
|
|
dst += length;
|
|
while (length--)
|
|
{
|
|
*--dst = *--src;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Use optimizing algorithm for a non-destructive copy to closely
|
|
match memcpy. If the size is small or either SRC or DST is unaligned,
|
|
then punt into the byte copy loop. This should be rare. */
|
|
if (!TOO_SMALL(length) && !UNALIGNED (src, dst))
|
|
{
|
|
aligned_dst = (long*)dst;
|
|
aligned_src = (long*)src;
|
|
|
|
/* Copy 4X long words at a time if possible. */
|
|
while (length >= BIGBLOCKSIZE)
|
|
{
|
|
*aligned_dst++ = *aligned_src++;
|
|
*aligned_dst++ = *aligned_src++;
|
|
*aligned_dst++ = *aligned_src++;
|
|
*aligned_dst++ = *aligned_src++;
|
|
length -= BIGBLOCKSIZE;
|
|
}
|
|
|
|
/* Copy one long word at a time if possible. */
|
|
while (length >= LITTLEBLOCKSIZE)
|
|
{
|
|
*aligned_dst++ = *aligned_src++;
|
|
length -= LITTLEBLOCKSIZE;
|
|
}
|
|
|
|
/* Pick up any residual with a byte copier. */
|
|
dst = (char*)aligned_dst;
|
|
src = (char*)aligned_src;
|
|
}
|
|
|
|
while (length--)
|
|
{
|
|
*dst++ = *src++;
|
|
}
|
|
}
|
|
|
|
return dst_void;
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
}
|
|
|
|
#endif /* MESOSPHERE_LIBC_MEMMOVE_GENERIC */
|
|
|
|
/*
|
|
FUNCTION
|
|
<<memcpy>>---copy memory regions
|
|
SYNOPSIS
|
|
#include <string.h>
|
|
void* memcpy(void *restrict <[out]>, const void *restrict <[in]>,
|
|
size_t <[n]>);
|
|
DESCRIPTION
|
|
This function copies <[n]> bytes from the memory region
|
|
pointed to by <[in]> to the memory region pointed to by
|
|
<[out]>.
|
|
If the regions overlap, the behavior is undefined.
|
|
RETURNS
|
|
<<memcpy>> returns a pointer to the first byte of the <[out]>
|
|
region.
|
|
PORTABILITY
|
|
<<memcpy>> is ANSI C.
|
|
<<memcpy>> requires no supporting OS subroutines.
|
|
QUICKREF
|
|
memcpy ansi pure
|
|
*/
|
|
|
|
#if MESOSPHERE_LIBC_MEMCPY_GENERIC
|
|
|
|
void *
|
|
__attribute__((weak))
|
|
memcpy (void * dst0,
|
|
const void * __restrict src0,
|
|
size_t len0)
|
|
{
|
|
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
|
char *dst = (char *) dst0;
|
|
char *src = (char *) src0;
|
|
|
|
void *save = dst0;
|
|
|
|
while (len0--)
|
|
{
|
|
*dst++ = *src++;
|
|
}
|
|
|
|
return save;
|
|
#else
|
|
char *dst = dst0;
|
|
const char *src = src0;
|
|
long *aligned_dst;
|
|
const long *aligned_src;
|
|
|
|
/* If the size is small, or either SRC or DST is unaligned,
|
|
then punt into the byte copy loop. This should be rare. */
|
|
if (!TOO_SMALL(len0) && !UNALIGNED (src, dst))
|
|
{
|
|
aligned_dst = (long*)dst;
|
|
aligned_src = (long*)src;
|
|
|
|
/* Copy 4X long words at a time if possible. */
|
|
while (len0 >= BIGBLOCKSIZE)
|
|
{
|
|
*aligned_dst++ = *aligned_src++;
|
|
*aligned_dst++ = *aligned_src++;
|
|
*aligned_dst++ = *aligned_src++;
|
|
*aligned_dst++ = *aligned_src++;
|
|
len0 -= BIGBLOCKSIZE;
|
|
}
|
|
|
|
/* Copy one long word at a time if possible. */
|
|
while (len0 >= LITTLEBLOCKSIZE)
|
|
{
|
|
*aligned_dst++ = *aligned_src++;
|
|
len0 -= LITTLEBLOCKSIZE;
|
|
}
|
|
|
|
/* Pick up any residual with a byte copier. */
|
|
dst = (char*)aligned_dst;
|
|
src = (char*)aligned_src;
|
|
}
|
|
|
|
while (len0--)
|
|
*dst++ = *src++;
|
|
|
|
return dst0;
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
}
|
|
|
|
#endif /* MESOSPHERE_LIBC_MEMCPY_GENERIC */
|
|
|
|
/*
|
|
FUNCTION
|
|
<<memset>>---set an area of memory
|
|
INDEX
|
|
memset
|
|
SYNOPSIS
|
|
#include <string.h>
|
|
void *memset(void *<[dst]>, int <[c]>, size_t <[length]>);
|
|
DESCRIPTION
|
|
This function converts the argument <[c]> into an unsigned
|
|
char and fills the first <[length]> characters of the array
|
|
pointed to by <[dst]> to the value.
|
|
RETURNS
|
|
<<memset>> returns the value of <[dst]>.
|
|
PORTABILITY
|
|
<<memset>> is ANSI C.
|
|
<<memset>> requires no supporting OS subroutines.
|
|
QUICKREF
|
|
memset ansi pure
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#undef LBLOCKSIZE
|
|
#undef UNALIGNED
|
|
#undef TOO_SMALL
|
|
|
|
#define LBLOCKSIZE (sizeof(long))
|
|
#define UNALIGNED(X) ((long)X & (LBLOCKSIZE - 1))
|
|
#define TOO_SMALL(LEN) ((LEN) < LBLOCKSIZE)
|
|
|
|
#if MESOSPHERE_LIBC_MEMSET_GENERIC
|
|
|
|
void *
|
|
__attribute__((weak))
|
|
memset (void *m,
|
|
int c,
|
|
size_t n)
|
|
{
|
|
char *s = (char *) m;
|
|
|
|
#if !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__)
|
|
unsigned int i;
|
|
unsigned long buffer;
|
|
unsigned long *aligned_addr;
|
|
unsigned int d = c & 0xff; /* To avoid sign extension, copy C to an
|
|
unsigned variable. */
|
|
|
|
while (UNALIGNED (s))
|
|
{
|
|
if (n--)
|
|
*s++ = (char) c;
|
|
else
|
|
return m;
|
|
}
|
|
|
|
if (!TOO_SMALL (n))
|
|
{
|
|
/* If we get this far, we know that n is large and s is word-aligned. */
|
|
aligned_addr = (unsigned long *) s;
|
|
|
|
/* Store D into each char sized location in BUFFER so that
|
|
we can set large blocks quickly. */
|
|
buffer = (d << 8) | d;
|
|
buffer |= (buffer << 16);
|
|
for (i = 32; i < LBLOCKSIZE * 8; i <<= 1)
|
|
buffer = (buffer << i) | buffer;
|
|
|
|
/* Unroll the loop. */
|
|
while (n >= LBLOCKSIZE*4)
|
|
{
|
|
*aligned_addr++ = buffer;
|
|
*aligned_addr++ = buffer;
|
|
*aligned_addr++ = buffer;
|
|
*aligned_addr++ = buffer;
|
|
n -= 4*LBLOCKSIZE;
|
|
}
|
|
|
|
while (n >= LBLOCKSIZE)
|
|
{
|
|
*aligned_addr++ = buffer;
|
|
n -= LBLOCKSIZE;
|
|
}
|
|
/* Pick up the remainder with a bytewise loop. */
|
|
s = (char*)aligned_addr;
|
|
}
|
|
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
|
|
while (n--)
|
|
*s++ = (char) c;
|
|
|
|
return m;
|
|
}
|
|
|
|
#endif /* MESOSPHERE_LIBC_MEMSET_GENERIC */
|
|
|
|
/*
|
|
FUNCTION
|
|
<<memcmp>>---compare two memory areas
|
|
INDEX
|
|
memcmp
|
|
SYNOPSIS
|
|
#include <string.h>
|
|
int memcmp(const void *<[s1]>, const void *<[s2]>, size_t <[n]>);
|
|
DESCRIPTION
|
|
This function compares not more than <[n]> characters of the
|
|
object pointed to by <[s1]> with the object pointed to by <[s2]>.
|
|
RETURNS
|
|
The function returns an integer greater than, equal to or
|
|
less than zero according to whether the object pointed to by
|
|
<[s1]> is greater than, equal to or less than the object
|
|
pointed to by <[s2]>.
|
|
PORTABILITY
|
|
<<memcmp>> is ANSI C.
|
|
<<memcmp>> requires no supporting OS subroutines.
|
|
QUICKREF
|
|
memcmp ansi pure
|
|
*/
|
|
|
|
#undef LBLOCKSIZE
|
|
#undef UNALIGNED
|
|
#undef TOO_SMALL
|
|
|
|
/* Nonzero if either X or Y is not aligned on a "long" boundary. */
|
|
#define UNALIGNED(X, Y) \
|
|
(((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
|
|
|
|
/* How many bytes are copied each iteration of the word copy loop. */
|
|
#define LBLOCKSIZE (sizeof (long))
|
|
|
|
/* Threshhold for punting to the byte copier. */
|
|
#define TOO_SMALL(LEN) ((LEN) < LBLOCKSIZE)
|
|
|
|
#if MESOSPHERE_LIBC_MEMCMP_GENERIC
|
|
|
|
int
|
|
__attribute__((weak))
|
|
memcmp (const void *m1,
|
|
const void *m2,
|
|
size_t n)
|
|
{
|
|
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
|
unsigned char *s1 = (unsigned char *) m1;
|
|
unsigned char *s2 = (unsigned char *) m2;
|
|
|
|
while (n--)
|
|
{
|
|
if (*s1 != *s2)
|
|
{
|
|
return *s1 - *s2;
|
|
}
|
|
s1++;
|
|
s2++;
|
|
}
|
|
return 0;
|
|
#else
|
|
unsigned char *s1 = (unsigned char *) m1;
|
|
unsigned char *s2 = (unsigned char *) m2;
|
|
unsigned long *a1;
|
|
unsigned long *a2;
|
|
|
|
/* If the size is too small, or either pointer is unaligned,
|
|
then we punt to the byte compare loop. Hopefully this will
|
|
not turn up in inner loops. */
|
|
if (!TOO_SMALL(n) && !UNALIGNED(s1,s2))
|
|
{
|
|
/* Otherwise, load and compare the blocks of memory one
|
|
word at a time. */
|
|
a1 = (unsigned long*) s1;
|
|
a2 = (unsigned long*) s2;
|
|
while (n >= LBLOCKSIZE)
|
|
{
|
|
if (*a1 != *a2)
|
|
break;
|
|
a1++;
|
|
a2++;
|
|
n -= LBLOCKSIZE;
|
|
}
|
|
|
|
/* check m mod LBLOCKSIZE remaining characters */
|
|
|
|
s1 = (unsigned char*)a1;
|
|
s2 = (unsigned char*)a2;
|
|
}
|
|
|
|
while (n--)
|
|
{
|
|
if (*s1 != *s2)
|
|
return *s1 - *s2;
|
|
s1++;
|
|
s2++;
|
|
}
|
|
|
|
return 0;
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
}
|
|
|
|
#endif /* MESOSPHERE_LIBC_MEMCMP_GENERIC */
|
|
|
|
/*
|
|
FUNCTION
|
|
<<strncpy>>---counted copy string
|
|
INDEX
|
|
strncpy
|
|
SYNOPSIS
|
|
#include <string.h>
|
|
char *strncpy(char *restrict <[dst]>, const char *restrict <[src]>,
|
|
size_t <[length]>);
|
|
DESCRIPTION
|
|
<<strncpy>> copies not more than <[length]> characters from the
|
|
the string pointed to by <[src]> (including the terminating
|
|
null character) to the array pointed to by <[dst]>. If the
|
|
string pointed to by <[src]> is shorter than <[length]>
|
|
characters, null characters are appended to the destination
|
|
array until a total of <[length]> characters have been
|
|
written.
|
|
RETURNS
|
|
This function returns the initial value of <[dst]>.
|
|
PORTABILITY
|
|
<<strncpy>> is ANSI C.
|
|
<<strncpy>> requires no supporting OS subroutines.
|
|
QUICKREF
|
|
strncpy ansi pure
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <limits.h>
|
|
|
|
/*SUPPRESS 560*/
|
|
/*SUPPRESS 530*/
|
|
|
|
/* Nonzero if either X or Y is not aligned on a "long" boundary. */
|
|
#define UNALIGNED(X, Y) \
|
|
(((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
|
|
|
|
#if LONG_MAX == 2147483647L
|
|
#define DETECTNULL(X) (((X) - 0x01010101) & ~(X) & 0x80808080)
|
|
#else
|
|
#if LONG_MAX == 9223372036854775807L
|
|
/* Nonzero if X (a long int) contains a NULL byte. */
|
|
#define DETECTNULL(X) (((X) - 0x0101010101010101) & ~(X) & 0x8080808080808080)
|
|
#else
|
|
#error long int is not a 32bit or 64bit type.
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef DETECTNULL
|
|
#error long int is not a 32bit or 64bit byte
|
|
#endif
|
|
|
|
#undef TOO_SMALL
|
|
#define TOO_SMALL(LEN) ((LEN) < sizeof (long))
|
|
|
|
#if MESOSPHERE_LIBC_STRNCMP_GENERIC
|
|
|
|
char *
|
|
strncpy (char *__restrict dst0,
|
|
const char *__restrict src0,
|
|
size_t count)
|
|
{
|
|
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
|
char *dscan;
|
|
const char *sscan;
|
|
|
|
dscan = dst0;
|
|
sscan = src0;
|
|
while (count > 0)
|
|
{
|
|
--count;
|
|
if ((*dscan++ = *sscan++) == '\0')
|
|
break;
|
|
}
|
|
while (count-- > 0)
|
|
*dscan++ = '\0';
|
|
|
|
return dst0;
|
|
#else
|
|
char *dst = dst0;
|
|
const char *src = src0;
|
|
long *aligned_dst;
|
|
const long *aligned_src;
|
|
|
|
/* If SRC and DEST is aligned and count large enough, then copy words. */
|
|
if (!UNALIGNED (src, dst) && !TOO_SMALL (count))
|
|
{
|
|
aligned_dst = (long*)dst;
|
|
aligned_src = (long*)src;
|
|
|
|
/* SRC and DEST are both "long int" aligned, try to do "long int"
|
|
sized copies. */
|
|
while (count >= sizeof (long int) && !DETECTNULL(*aligned_src))
|
|
{
|
|
count -= sizeof (long int);
|
|
*aligned_dst++ = *aligned_src++;
|
|
}
|
|
|
|
dst = (char*)aligned_dst;
|
|
src = (char*)aligned_src;
|
|
}
|
|
|
|
while (count > 0)
|
|
{
|
|
--count;
|
|
if ((*dst++ = *src++) == '\0')
|
|
break;
|
|
}
|
|
|
|
while (count-- > 0)
|
|
*dst++ = '\0';
|
|
|
|
return dst0;
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
}
|
|
|
|
#endif /* MESOSPHERE_LIBC_STRNCPY_GENERIC */
|
|
|
|
/*
|
|
FUNCTION
|
|
<<strncmp>>---character string compare
|
|
|
|
INDEX
|
|
strncmp
|
|
SYNOPSIS
|
|
#include <string.h>
|
|
int strncmp(const char *<[a]>, const char * <[b]>, size_t <[length]>);
|
|
DESCRIPTION
|
|
<<strncmp>> compares up to <[length]> characters
|
|
from the string at <[a]> to the string at <[b]>.
|
|
RETURNS
|
|
If <<*<[a]>>> sorts lexicographically after <<*<[b]>>>,
|
|
<<strncmp>> returns a number greater than zero. If the two
|
|
strings are equivalent, <<strncmp>> returns zero. If <<*<[a]>>>
|
|
sorts lexicographically before <<*<[b]>>>, <<strncmp>> returns a
|
|
number less than zero.
|
|
PORTABILITY
|
|
<<strncmp>> is ANSI C.
|
|
<<strncmp>> requires no supporting OS subroutines.
|
|
QUICKREF
|
|
strncmp ansi pure
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <limits.h>
|
|
|
|
/* Nonzero if either X or Y is not aligned on a "long" boundary. */
|
|
#define UNALIGNED(X, Y) \
|
|
(((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
|
|
|
|
/* DETECTNULL returns nonzero if (long)X contains a NULL byte. */
|
|
#if LONG_MAX == 2147483647L
|
|
#define DETECTNULL(X) (((X) - 0x01010101) & ~(X) & 0x80808080)
|
|
#else
|
|
#if LONG_MAX == 9223372036854775807L
|
|
#define DETECTNULL(X) (((X) - 0x0101010101010101) & ~(X) & 0x8080808080808080)
|
|
#else
|
|
#error long int is not a 32bit or 64bit type.
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef DETECTNULL
|
|
#error long int is not a 32bit or 64bit byte
|
|
#endif
|
|
|
|
#if MESOSPHERE_LIBC_STRNCMP_GENERIC
|
|
|
|
int
|
|
strncmp (const char *s1,
|
|
const char *s2,
|
|
size_t n)
|
|
{
|
|
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
|
if (n == 0)
|
|
return 0;
|
|
|
|
while (n-- != 0 && *s1 == *s2)
|
|
{
|
|
if (n == 0 || *s1 == '\0')
|
|
break;
|
|
s1++;
|
|
s2++;
|
|
}
|
|
|
|
return (*(unsigned char *) s1) - (*(unsigned char *) s2);
|
|
#else
|
|
unsigned long *a1;
|
|
unsigned long *a2;
|
|
|
|
if (n == 0)
|
|
return 0;
|
|
|
|
/* If s1 or s2 are unaligned, then compare bytes. */
|
|
if (!UNALIGNED (s1, s2))
|
|
{
|
|
/* If s1 and s2 are word-aligned, compare them a word at a time. */
|
|
a1 = (unsigned long*)s1;
|
|
a2 = (unsigned long*)s2;
|
|
while (n >= sizeof (long) && *a1 == *a2)
|
|
{
|
|
n -= sizeof (long);
|
|
|
|
/* If we've run out of bytes or hit a null, return zero
|
|
since we already know *a1 == *a2. */
|
|
if (n == 0 || DETECTNULL (*a1))
|
|
return 0;
|
|
|
|
a1++;
|
|
a2++;
|
|
}
|
|
|
|
/* A difference was detected in last few bytes of s1, so search bytewise */
|
|
s1 = (char*)a1;
|
|
s2 = (char*)a2;
|
|
}
|
|
|
|
while (n-- > 0 && *s1 == *s2)
|
|
{
|
|
/* If we've run out of bytes or hit a null, return zero
|
|
since we already know *s1 == *s2. */
|
|
if (n == 0 || *s1 == '\0')
|
|
return 0;
|
|
s1++;
|
|
s2++;
|
|
}
|
|
return (*(unsigned char *) s1) - (*(unsigned char *) s2);
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
}
|
|
|
|
#endif /* MESOSPHERE_LIBC_STRNCMP_GENERIC */
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|