4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2004, 2005, 2006, 2007 Develer S.r.l. (http://www.develer.com/)
30 * Copyright 2004 Giovanni Bajo
34 * \brief CPU-specific type definitions.
36 * \author Giovanni Bajo <rasky@develer.com>
37 * \author Bernie Innocenti <bernie@codewiz.org>
38 * \author Stefano Fedrigo <aleph@develer.com>
39 * \author Francesco Sacchi <batt@develer.com>
46 #include <cfg/compiler.h> /* for uintXX_t */
50 typedef uint16_t cpu_flags_t; // FIXME
51 typedef unsigned int cpu_stack_t;
52 typedef cpu_stack_t cpu_aligned_stack_t;
53 typedef unsigned int cpu_atomic_t;
54 #warning Verify following constant
55 #define SIZEOF_CPUSTACK_T 2
56 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
60 /* Get cpu_flags_t definition from the hosting environment. */
63 typedef uint32_t cpu_flags_t; // FIXME
64 #endif /* OS_EMBEDDED */
66 typedef uint32_t cpu_atomic_t;
69 typedef uint64_t cpu_stack_t;
70 typedef cpu_stack_t cpu_aligned_stack_t;
71 #define SIZEOF_CPUSTACK_T 8
72 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
74 typedef uint32_t cpu_stack_t;
75 typedef cpu_stack_t cpu_aligned_stack_t;
76 #define SIZEOF_CPUSTACK_T 4
77 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
80 #elif CPU_ARM || CPU_CM3
82 typedef uint32_t cpu_flags_t;
83 typedef uint32_t cpu_atomic_t;
84 typedef uint32_t cpu_stack_t;
85 #define SIZEOF_CPUSTACK_T 4
88 typedef uint64_t cpu_aligned_stack_t;
89 #define SIZEOF_CPUALIGNED_T 8
91 typedef uint32_t cpu_aligned_stack_t;
92 #define SIZEOF_CPUALIGNED_T 4
94 #error CPU configuration error
99 /* Get cpu_flags_t definition from the hosting environment. */
102 typedef uint32_t cpu_flags_t;
105 typedef uint32_t cpu_atomic_t;
106 typedef uint32_t cpu_stack_t;
107 typedef cpu_stack_t cpu_aligned_stack_t;
108 #define SIZEOF_CPUSTACK_T 4
109 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
113 typedef uint16_t cpu_flags_t;
114 typedef uint16_t cpu_atomic_t;
115 typedef unsigned int cpu_stack_t;
116 typedef cpu_stack_t cpu_aligned_stack_t;
117 #warning Verify following costant
118 #define SIZEOF_CPUSTACK_T 2
119 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
123 typedef uint8_t cpu_flags_t;
124 typedef uint8_t cpu_atomic_t;
125 typedef uint8_t cpu_stack_t;
126 typedef cpu_stack_t cpu_aligned_stack_t;
127 #define SIZEOF_CPUSTACK_T 1
128 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
131 #error No CPU_... defined.
135 * \name Default type sizes.
137 * These defaults are reasonable for most 16/32bit machines.
138 * Some of these macros may be overridden by CPU-specific code above.
140 * ANSI C requires that the following equations be true:
142 * sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long)
143 * sizeof(float) <= sizeof(double)
144 * CPU_BITS_PER_CHAR >= 8
145 * CPU_BITS_PER_SHORT >= 8
146 * CPU_BITS_PER_INT >= 16
147 * CPU_BITS_PER_LONG >= 32
152 #define SIZEOF_CHAR 1
156 #define SIZEOF_SHORT 2
160 #if CPU_REG_BITS < 32
165 #endif /* !SIZEOF_INT */
168 #if CPU_REG_BITS > 32
169 #define SIZEOF_LONG 8
171 #define SIZEOF_LONG 4
176 #if CPU_REG_BITS < 32
178 #elif CPU_REG_BITS == 32
180 #else /* CPU_REG_BITS > 32 */
185 #ifndef SIZEOF_SIZE_T
186 #if CPU_REG_BITS < 32
187 #define SIZEOF_SIZE_T 2
188 #elif CPU_REG_BITS == 32
189 #define SIZEOF_SIZE_T 4
190 #else /* CPU_REG_BITS > 32 */
191 #define SIZEOF_SIZE_T 8
195 #ifndef CPU_BITS_PER_CHAR
196 #define CPU_BITS_PER_CHAR (SIZEOF_CHAR * 8)
199 #ifndef CPU_BITS_PER_SHORT
200 #define CPU_BITS_PER_SHORT (SIZEOF_SHORT * CPU_BITS_PER_CHAR)
203 #ifndef CPU_BITS_PER_INT
204 #define CPU_BITS_PER_INT (SIZEOF_INT * CPU_BITS_PER_CHAR)
207 #ifndef CPU_BITS_PER_LONG
208 #define CPU_BITS_PER_LONG (SIZEOF_LONG * CPU_BITS_PER_CHAR)
211 #ifndef CPU_BITS_PER_PTR
212 #define CPU_BITS_PER_PTR (SIZEOF_PTR * CPU_BITS_PER_CHAR)
219 #define INT_MAX ((int)((unsigned int)~0 >> 1))
220 #define INT_MIN (-INT_MAX - 1)
223 /* Sanity checks for the above definitions */
224 STATIC_ASSERT(sizeof(char) == SIZEOF_CHAR);
225 STATIC_ASSERT(sizeof(short) == SIZEOF_SHORT);
226 STATIC_ASSERT(sizeof(long) == SIZEOF_LONG);
227 STATIC_ASSERT(sizeof(int) == SIZEOF_INT);
228 STATIC_ASSERT(sizeof(void *) == SIZEOF_PTR);
229 STATIC_ASSERT(sizeof(int8_t) * CPU_BITS_PER_CHAR == 8);
230 STATIC_ASSERT(sizeof(uint8_t) * CPU_BITS_PER_CHAR == 8);
231 STATIC_ASSERT(sizeof(int16_t) * CPU_BITS_PER_CHAR == 16);
232 STATIC_ASSERT(sizeof(uint16_t) * CPU_BITS_PER_CHAR == 16);
233 STATIC_ASSERT(sizeof(int32_t) * CPU_BITS_PER_CHAR == 32);
234 STATIC_ASSERT(sizeof(uint32_t) * CPU_BITS_PER_CHAR == 32);
235 #ifdef __HAS_INT64_T__
236 STATIC_ASSERT(sizeof(int64_t) * CPU_BITS_PER_CHAR == 64);
237 STATIC_ASSERT(sizeof(uint64_t) * CPU_BITS_PER_CHAR == 64);
239 STATIC_ASSERT(sizeof(cpu_stack_t) == SIZEOF_CPUSTACK_T);
240 STATIC_ASSERT(sizeof(cpu_aligned_stack_t) == SIZEOF_CPUALIGNED_T);
241 STATIC_ASSERT(sizeof(size_t) == SIZEOF_SIZE_T);
243 #endif /* CPU_TYPES_H */