mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-19 18:46:30 +00:00
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Move half-word library function.
|
|
Copyright (C) 2000-2019 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 3, 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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
void
|
|
__cmovh (short *dest, const short *src, unsigned len)
|
|
{
|
|
unsigned i;
|
|
unsigned num = len >> 1;
|
|
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];
|
|
|
|
if ((len & 1) != 0)
|
|
dest_byte[len-1] = src_byte[len-1];
|
|
}
|
|
else
|
|
{
|
|
while (len-- > 0)
|
|
dest_byte[len] = src_byte[len];
|
|
}
|
|
}
|