Contiki-NG
arm-def.h
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2017, George Oikonomou - http://www.spd.gr
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  *
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holder nor the names of its
15  * contributors may be used to endorse or promote products derived
16  * from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29  * OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 /*---------------------------------------------------------------------------*/
32 /**
33  * \addtogroup arm
34  * @{
35  *
36  * \file
37  * Compiler and data type definitions for all ARM-based CPUs
38  */
39 /*---------------------------------------------------------------------------*/
40 #ifndef ARM_DEF_
41 #define ARM_DEF_
42 /*---------------------------------------------------------------------------*/
43 #include <stdint.h>
44 /*---------------------------------------------------------------------------*/
45 /**
46  * \name Macros and typedefs
47  *
48  * Those values are not meant to be modified by the user
49  * @{
50  */
51 #define CLOCK_CONF_SECOND 128
52 
53 /* Clock (time) comparison macro */
54 #define CLOCK_LT(a, b) ((signed long)((a) - (b)) < 0)
55 
56 /* Platform typedefs */
57 typedef uint32_t clock_time_t;
58 typedef uint32_t uip_stats_t;
59 
60 /** @} */
61 
62 /*
63  * The stdio.h that ships with the arm-gcc toolchain does this:
64  *
65  * int _EXFUN(putchar, (int));
66  * [...]
67  * #define putchar(x) putc(x, stdout)
68  *
69  * This causes us a lot of trouble: For platforms using this toolchain, every
70  * time we use putchar we need to first #undef putchar. What we do here is to
71  * #undef putchar across the board. The resulting code will cause the linker
72  * to search for a symbol named putchar and this allows us to use the
73  * implementation under os/lib/dbg-io.
74  *
75  * This will fail if stdio.h is included before contiki.h, but it is common
76  * practice to include contiki.h first
77  */
78 #include <stdio.h>
79 #undef putchar
80 /*---------------------------------------------------------------------------*/
81 #endif /* ARM_DEF_ */
82 /*---------------------------------------------------------------------------*/
83 /** @} */