CfgUSBLoader/cios/odip_plugin/source/utils.c
2015-01-17 10:11:08 +00:00

55 lines
1.3 KiB
C

/*
* Copyright (C) 2010 Spaceman Spiff
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <utils.h>
void dip_memset(u8 *buf, u32 ch, u32 size)
{
u32 unaligned;
u8 c = (u8) ch;
int cnt = 0;
if (size == 0)
return;
unaligned = (4 - ((u32) buf & 0x3)) & 0x3;
if (unaligned > size)
unaligned = size;
if (unaligned)
while (unaligned--) {
buf[cnt] = c;
cnt++;
};
// Process aligned bytes
u32 c32 = (ch << 24) | (ch << 16) | (ch << 8) | ch;
u32 *buf32 = (u32 *) (buf + cnt);
while (cnt + 4 <= size) {
*(buf32++) = c32;
cnt += 4;
}
// Process unaligned tail bytes
while (cnt++ < size)
buf[cnt] = c;
}