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 <stddef.h>
30 #include <_ansi.h>
31
32 /* According to the run-time ABI for the ARM Architecture, this
33 function is allowed to corrupt only the integer core register
34 permitted to be corrupted by the [AAPCS] (r0-r3, ip, lr, and
35 CPSR).
36
37 Therefore, we can't just simply use alias to support the function
38 aeabi_memset for the targets with FP register. Instead, versions
39 for these specific targets are written in assembler (in
40 aeabi_memset-soft.S). */
41
42 /* NOTE: This ifdef MUST match the one in aeabi_memset-soft.S. */
43 #if !defined (__SOFTFP__)
44
45 /* Defined in aeabi_memset-soft.S. */
46
47 #else
48 /* Support the alias for the __aeabi_memset which may
49 assume memory alignment. */
50 void __aeabi_memset4 (void *dest, size_t n, int c)
51 _ATTRIBUTE ((alias ("__aeabi_memset")));
52
53 void __aeabi_memset8 (void *dest, size_t n, int c)
54 _ATTRIBUTE ((alias ("__aeabi_memset")));
55
56 /* Support the routine __aeabi_memset. Can't alias to memset
57 because it's not defined in the same translation unit. */
__aeabi_memset(void * dest,size_t n,int c)58 void __aeabi_memset (void *dest, size_t n, int c)
59 {
60 /*Note that relative to ANSI memset, __aeabi_memset hase the order
61 of its second and third arguments reversed. */
62 extern void memset (void *dest, int c, size_t n);
63 memset (dest, c, n);
64 }
65 #endif
66