/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <string.h>

#include <memcopy.h>

#undef memset

void *

inhibit_loop_to_libcall

memset (void *dstpp, int c, size_t len)

{

  long int dstp = (long int) dstpp;

  if (len >= 8)

    {

      size_t xlen;

      op_t cccc;

      cccc = (unsigned char) c;

      cccc |= cccc << 8;

      cccc |= cccc << 16;

      if (OPSIZ > 4)

	/* Do the shift in two steps to avoid warning if long has 32 bits.  */

	cccc |= (cccc << 16) << 16;

      /* There are at least some bytes to set.

	 No need to test for LEN == 0 in this alignment loop.  */

      while (dstp % OPSIZ != 0)

	{

	  ((byte *) dstp)[0] = c;

	  dstp += 1;

	  len -= 1;

	}

      /* Write 8 `op_t' per iteration until less than 8 `op_t' remain.  */

      xlen = len / (OPSIZ * 8);

      while (xlen > 0)

	{

	  ((op_t *) dstp)[0] = cccc;

	  ((op_t *) dstp)[1] = cccc;

	  ((op_t *) dstp)[2] = cccc;

	  ((op_t *) dstp)[3] = cccc;

	  ((op_t *) dstp)[4] = cccc;

	  ((op_t *) dstp)[5] = cccc;

	  ((op_t *) dstp)[6] = cccc;

	  ((op_t *) dstp)[7] = cccc;

	  dstp += 8 * OPSIZ;

	  xlen -= 1;

	}

      len %= OPSIZ * 8;

      /* Write 1 `op_t' per iteration until less than OPSIZ bytes remain.  */

      xlen = len / OPSIZ;

      while (xlen > 0)

	{

	  ((op_t *) dstp)[0] = cccc;

	  dstp += OPSIZ;

	  xlen -= 1;

	}

      len %= OPSIZ;

    }

  /* Write the last few bytes.  */

  while (len > 0)

    {

      ((byte *) dstp)[0] = c;

      dstp += 1;

      len -= 1;

    }

  return dstpp;

}

libc_hidden_builtin_def (memset)