55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* Move double-word library function.
|
|
Copyright (C) 2000, 2003 Free Software Foundation, Inc.
|
|
Contributed by Red Hat, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC 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.
|
|
|
|
GCC 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 GCC; 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. */
|
|
|
|
void
|
|
__cmovd (long long *dest, const long long *src, unsigned len)
|
|
{
|
|
unsigned i;
|
|
unsigned num = len >> 3;
|
|
unsigned xlen = len & ~7;
|
|
char *dest_byte = (char *)dest;
|
|
const char *src_byte = (const char *)src;
|
|
|
|
if (dest_byte < src_byte || dest_byte > src_byte+len)
|
|
{
|
|
for (i = 0; i < num; i++)
|
|
dest[i] = src[i];
|
|
|
|
while (len > xlen)
|
|
{
|
|
dest_byte[xlen] = src_byte[xlen];
|
|
xlen++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (len-- > 0)
|
|
dest_byte[len] = src_byte[len];
|
|
}
|
|
}
|