1 /*
2 * Copyright (c) 2015 ARM Ltd
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the company may not be used to endorse or promote
14 * products derived from this software without specific prior written
15 * permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
22 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <picolibc.h>
30
31 #include <stddef.h>
32 #include <string.h>
33
34 /* Support the alias for the __aeabi_memset which may
35 assume memory alignment. */
36 void __aeabi_memset4 (void *dest, size_t n, int c)
37 _ATTRIBUTE ((alias ("__aeabi_memset"), weak));
38
39 void __aeabi_memset8 (void *dest, size_t n, int c)
40 _ATTRIBUTE ((alias ("__aeabi_memset"), weak));
41
42 /* Support the routine __aeabi_memset. Can't alias to memset
43 because the arguments are in a different order */
44 /*
45 *__attribute__((used)) added so that building with clang -flto
46 * doesn't discard this function
47 */
48
49 #undef memset
50
51 void __attribute__((used, weak)) __aeabi_memset (void *dest, size_t n, int c);
52
__aeabi_memset(void * dest,size_t n,int c)53 void __attribute__((used, weak)) __aeabi_memset (void *dest, size_t n, int c)
54 {
55 /*Note that relative to ANSI memset, __aeabi_memset hase the order
56 of its second and third arguments reversed. */
57 memset (dest, c, n);
58 }
59
