1 /***************************************************************************
2 * Copyright (C) 2004, 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
27 #ifdef HAVE_SYS_TYPES_H
28 #include <sys/types.h>
33 #ifdef HAVE_INTTYPES_H
39 #else /* HAVE_STDBOOL_H */
40 #define __bool_true_false_are_defined 1
51 #endif /* __cplusplus */
52 #endif /* HAVE__BOOL */
56 #endif /* HAVE_STDBOOL_H */
58 /// turns a macro argument into a string constant
59 #define stringify(s) __stringify(s)
60 #define __stringify(s) #s
64 * Cast a member of a structure out to the containing structure.
65 * @param ptr The pointer to the member.
66 * @param type The type of the container struct this is embedded in.
67 * @param member The name of the member within the struct.
69 * This is a mechanism which is used throughout the Linux kernel.
71 #define container_of(ptr, type, member) ({ \
72 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
73 (type *)( (char *)__mptr - offsetof(type,member) );})
77 * Rounds @c m up to the nearest multiple of @c n using division.
78 * @params m The value to round up to @c n.
79 * @params n Round @c m up to a multiple of this number.
80 * @returns The rounded integer value.
82 #define DIV_ROUND_UP(m, n) (((m) + (n) - 1) / (n))
85 /* DANGER!!!! here be dragons!
87 * Leave these fn's as byte accesses because it is safe
88 * across architectures. Clever usage of 32 bit access
89 * will create problems on some hosts.
91 * Note that the "buf" pointer in memory is probably unaligned.
93 * Were these functions to be re-written to take a 32 bit wide or 16 bit wide
94 * memory access shortcut, then on some CPU's, i.e. ARM7, the 2 lsbytes of the address are
95 * ignored for 32 bit access, whereas on other CPU's a 32 bit wide unaligned memory access
96 * will cause an exception, and lastly on x86, an unaligned "greater than bytewide"
97 * memory access works as if aligned. So what follows below will work for all
98 * platforms and gives the compiler leeway to do its own platform specific optimizations.
100 * Again, note that the "buf" pointer in memory is probably unaligned.
104 static inline uint32_t le_to_h_u32(const uint8_t* buf)
106 return (uint32_t)(buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24);
109 static inline uint16_t le_to_h_u16(const uint8_t* buf)
111 return (uint16_t)(buf[0] | buf[1] << 8);
114 static inline uint32_t be_to_h_u32(const uint8_t* buf)
116 return (uint32_t)(buf[3] | buf[2] << 8 | buf[1] << 16 | buf[0] << 24);
119 static inline uint16_t be_to_h_u16(const uint8_t* buf)
121 return (uint16_t)(buf[1] | buf[0] << 8);
124 static inline void h_u32_to_le(uint8_t* buf, int val)
126 buf[3] = (uint8_t) (val >> 24);
127 buf[2] = (uint8_t) (val >> 16);
128 buf[1] = (uint8_t) (val >> 8);
129 buf[0] = (uint8_t) (val >> 0);
132 static inline void h_u32_to_be(uint8_t* buf, int val)
134 buf[0] = (uint8_t) (val >> 24);
135 buf[1] = (uint8_t) (val >> 16);
136 buf[2] = (uint8_t) (val >> 8);
137 buf[3] = (uint8_t) (val >> 0);
140 static inline void h_u16_to_le(uint8_t* buf, int val)
142 buf[1] = (uint8_t) (val >> 8);
143 buf[0] = (uint8_t) (val >> 0);
146 static inline void h_u16_to_be(uint8_t* buf, int val)
148 buf[0] = (uint8_t) (val >> 8);
149 buf[1] = (uint8_t) (val >> 0);
154 /* eCos plain lacks these definition... A series of upstream patches
155 * could probably repair it, but it seems like too much work to be
159 #if !defined(_STDINT_H)
166 typedef CYG_ADDRWORD intptr_t;
167 typedef int64_t intmax_t;
168 typedef uint64_t uintmax_t;
169 #define INT8_MAX 0x7f
170 #define INT8_MIN (-INT8_MAX - 1)
171 # define UINT8_MAX (255)
172 #define INT16_MAX 0x7fff
173 #define INT16_MIN (-INT16_MAX - 1)
174 # define UINT16_MAX (65535)
175 #define INT32_MAX 0x7fffffffL
176 #define INT32_MIN (-INT32_MAX - 1L)
177 # define UINT32_MAX (4294967295U)
178 #define INT64_MAX 0x7fffffffffffffffLL
179 #define INT64_MIN (-INT64_MAX - 1LL)
180 #define UINT64_MAX (__CONCAT(INT64_MAX, U) * 2ULL + 1ULL)
184 #define ULLONG_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
185 #define LLONG_MAX INT64_C(0x7FFFFFFFFFFFFFFF)
186 #define LLONG_MIN ULLONG_MAX
190 #define ULLONG_MAX 18446744073709551615
192 /* C99, eCos is C90 compliant (with bits of C99) */
193 #define isblank(c) ((c) == ' ' || (c) == '\t')