mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-31 00:45:43 +08:00
9bcfe71d16
* Makefile.in (STROBJS): Get memmove.o from configure.
* configure.in (RANLIB): Detect and substitute.
(memmove): Detect and substitute.
* memmove.c (memmove): Use size_t.
From-SVN: r34313
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/* Implement string-related runtime actions for CHILL.
|
|
Copyright (C) 1992,1993 Free Software Foundation, Inc.
|
|
Author: Bill Cox
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC is distributed in the hope that 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 GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* As a special exception, if you link this library with other files,
|
|
some of which are compiled with GCC, to produce an executable,
|
|
this library does not by itself cause the resulting executable
|
|
to be covered by the GNU General Public License.
|
|
This exception does not however invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public License. */
|
|
|
|
#ifdef __STDC__
|
|
#include <stddef.h>
|
|
#else
|
|
#define size_t unsigned long
|
|
#endif
|
|
|
|
|
|
/*
|
|
* function memmove
|
|
*
|
|
* parameters:
|
|
* S1 - pointer to destination string
|
|
* S2 - pointer to source string
|
|
* LEN - length of string
|
|
*
|
|
* returns:
|
|
* pointer to destination string
|
|
*
|
|
* exceptions:
|
|
* none
|
|
*
|
|
* abstract:
|
|
* copies a string safely, where the source and dest areas may overlap.
|
|
*
|
|
*/
|
|
|
|
void *
|
|
memmove (s1, s2, n)
|
|
void *s1;
|
|
const void *s2;
|
|
size_t n;
|
|
{
|
|
char *sc1 = s1;
|
|
const char *sc2 = s2;
|
|
|
|
if (sc2 < sc1 && (sc1 < sc2 + n))
|
|
for (sc1 += n, sc2 += n; 0 < n; --n)
|
|
*--sc1 = *--sc2;
|
|
else
|
|
#if 0
|
|
for (; 0 < n; --n)
|
|
*sc1++ = *sc2++;
|
|
#else
|
|
memcpy (sc1, sc2, n);
|
|
#endif
|
|
return s1;
|
|
}
|