text: /*
   * arch/v850/lib/memset.c -- Memory initialization
   *
   *  Copyright (C) 2001,02,04  NEC Corporation
   *  Copyright (C) 2001,02,04  Miles Bader <miles@gnu.org>
   *
   * This file is subject to the terms and conditions of the GNU General
   * Public License.  See the file COPYING in the main directory of this
   * archive for more details.
   *
   * Written by Miles Bader <miles@gnu.org>
   */
  
  #include <linux/types.h>
  
  void *memset (void *dst, int val, __kernel_size_t count)
  {
  	if (count) {
  		register unsigned loop;
  		register void *ptr asm ("ep") = dst;
  
  		/* replicate VAL into a long.  */
  		val &= 0xff;
  		val |= val << 8;
  		val |= val << 16;
  
  		/* copy initial unaligned bytes.  */
  		if ((long)ptr & 1) {
  			*(char *)ptr = val;
  			ptr = (void *)((char *)ptr + 1);
  			count--;
  		}
  		if (count > 2 && ((long)ptr & 2)) {
  			*(short *)ptr = val;
  			ptr = (void *)((short *)ptr + 1);
  			count -= 2;
  		}
  
  		/* 32-byte copying loop.  */
  		for (loop = count / 32; loop; loop--) {
  			asm ("sst.w %0, 0[ep]; sst.w %0, 4[ep];"
  			     "sst.w %0, 8[ep]; sst.w %0, 12[ep];"
  			     "sst.w %0, 16[ep]; sst.w %0, 20[ep];"
  			     "sst.w %0, 24[ep]; sst.w %0, 28[ep]"
  			     :: "r" (val) : "memory");
  			ptr += 32;
  		}
  		count %= 32;
  
  		/* long copying loop.  */
  		for (loop = count / 4; loop; loop--) {
  			*(long *)ptr = val;
  			ptr = (void *)((long *)ptr + 1);
  		}
  		count %= 4;
  
  		/* finish up with any trailing bytes.  */
  		if (count & 2) {
  			*(short *)ptr = val;
  			ptr = (void *)((short *)ptr + 1);
  		}
  		if (count & 1) {
  			*(char *)ptr = val;
  		}
  	}
  
  	return dst;
  }
  