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arm64: Expand HWCAP2 to be 64 bit
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1 /*-
2  * Copyright (c) 2015 The FreeBSD Foundation
3  *
4  * This software was developed by Andrew Turner under
5  * sponsorship from the FreeBSD Foundation.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28
29 #ifndef _MACHINE_IODEV_H_
30 #define _MACHINE_IODEV_H_
31
32 #define iodev_read_1(a)                                                 \
33 ({                                                                      \
34         uint8_t val;                                                    \
35         __asm __volatile("ldrb  %w0, [%1]" : "=&r" (val) : "r"(a));     \
36         val;                                                            \
37 })
38
39 #define iodev_read_2(a)                                                 \
40 ({                                                                      \
41         uint16_t val;                                                   \
42         __asm __volatile("ldrh  %w0, [%1]" : "=&r" (val) : "r"(a));     \
43         val;                                                            \
44 })
45
46 #define iodev_read_4(a)                                                 \
47 ({                                                                      \
48         uint32_t val;                                                   \
49         __asm __volatile("ldr   %w0, [%1]" : "=&r" (val) : "r"(a));     \
50         val;                                                            \
51 })
52
53 #define iodev_write_1(a, v)                                             \
54         __asm __volatile("strb  %w0, [%1]" :: "r" (v), "r"(a))
55
56 #define iodev_write_2(a, v)                                             \
57         __asm __volatile("strh  %w0, [%1]" :: "r" (v), "r"(a))
58
59 #define iodev_write_4(a, v)                                             \
60         __asm __volatile("str   %w0, [%1]" :: "r" (v), "r"(a))
61
62 #endif /* _MACHINE_IODEV_H_ */