src/string/generic/bzero.c

   1 /*
   2  * Copyright (c) 2013 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include <platform/string.h>
  25
  26 #if !_PLATFORM_OPTIMIZED_MEMSET
  27
  28 void *
  29 _platform_memset(void *b, int c, size_t len) {
  30         unsigned char pattern[4];
  31
  32         pattern[0] = (unsigned char)c;
  33         pattern[1] = (unsigned char)c;
  34         pattern[2] = (unsigned char)c;
  35         pattern[3] = (unsigned char)c;
  36
  37         _platform_memset_pattern4(b, pattern, len);
  38         return b;
  39 }
  40
  41 #if VARIANT_STATIC
  42 void *
  43 memset(void *b, int c, size_t len) {
  44         return _platform_memset(b, c, len);
  45 }
  46 #endif
  47
  48 #endif
  49
  50
  51 #if !_PLATFORM_OPTIMIZED_BZERO
  52
  53 void
  54 _platform_bzero(void *s, size_t n)
  55 {
  56         _platform_memset(s, 0, n);
  57 }
  58
  59 #if VARIANT_STATIC
  60 void
  61 bzero(void *s, size_t n) {
  62         _platform_bzero(s, n);
  63 }
  64
  65 void
  66 __bzero(void *s, size_t n) {
  67         _platform_bzero(s, n);
  68 }
  69 #endif
  70
  71 #endif