1/* EABI unaligned read/write functions.
2
3   Copyright (C) 2005-2022 Free Software Foundation, Inc.
4   Contributed by CodeSourcery, LLC.
5
6   This file is free software; you can redistribute it and/or modify it
7   under the terms of the GNU General Public License as published by the
8   Free Software Foundation; either version 3, or (at your option) any
9   later version.
10
11   This file is distributed in the hope that it will be useful, but
12   WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   General Public License for more details.
15
16   Under Section 7 of GPL version 3, you are granted additional
17   permissions described in the GCC Runtime Library Exception, version
18   3.1, as published by the Free Software Foundation.
19
20   You should have received a copy of the GNU General Public License and
21   a copy of the GCC Runtime Library Exception along with this program;
22   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23   <http://www.gnu.org/licenses/>.  */
24
25int __aeabi_uread4 (void *);
26int __aeabi_uwrite4 (int, void *);
27long long __aeabi_uread8 (void *);
28long long __aeabi_uwrite8 (long long, void *);
29
30struct __attribute__((packed)) u4 { int data; };
31struct __attribute__((packed)) u8 { long long data; };
32
33int
34__aeabi_uread4 (void *ptr)
35{
36  return ((struct u4 *) ptr)->data;
37}
38
39int
40__aeabi_uwrite4 (int data, void *ptr)
41{
42  ((struct u4 *) ptr)->data = data;
43  return data;
44}
45
46long long
47__aeabi_uread8 (void *ptr)
48{
49  return ((struct u8 *) ptr)->data;
50}
51
52long long
53__aeabi_uwrite8 (long long data, void *ptr)
54{
55  ((struct u8 *) ptr)->data = data;
56  return data;
57}
58