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>
47 #include <cfg/compiler.h> /* for uintXX_t */
51 typedef uint16_t cpu_flags_t; // FIXME
52 typedef unsigned int cpu_stack_t;
53 typedef cpu_stack_t cpu_aligned_stack_t;
54 typedef unsigned int cpu_atomic_t;
55 #warning Verify following constant
56 #define SIZEOF_CPUSTACK_T 2
57 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
61 /* Get cpu_flags_t definition from the hosting environment. */
64 typedef uint32_t cpu_flags_t; // FIXME
65 #endif /* OS_EMBEDDED */
67 typedef uint32_t cpu_atomic_t;
70 typedef uint64_t cpu_stack_t;
71 typedef cpu_stack_t cpu_aligned_stack_t;
72 #define SIZEOF_CPUSTACK_T 8
73 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
75 typedef uint32_t cpu_stack_t;
76 typedef cpu_stack_t cpu_aligned_stack_t;
77 #define SIZEOF_CPUSTACK_T 4
78 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
81 #elif CPU_ARM || CPU_CM3
83 typedef uint32_t cpu_flags_t;
84 typedef uint32_t cpu_atomic_t;
85 typedef uint32_t cpu_stack_t;
86 #define SIZEOF_CPUSTACK_T 4
88 typedef uint64_t cpu_aligned_stack_t;
89 #define SIZEOF_CPUALIGNED_T 8
93 /* Get cpu_flags_t definition from the hosting environment. */
96 typedef uint32_t cpu_flags_t;
99 typedef uint32_t cpu_atomic_t;
100 typedef uint32_t cpu_stack_t;
101 typedef cpu_stack_t cpu_aligned_stack_t;
102 #define SIZEOF_CPUSTACK_T 4
103 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
107 typedef uint16_t cpu_flags_t;
108 typedef uint16_t cpu_atomic_t;
109 typedef unsigned int cpu_stack_t;
110 typedef cpu_stack_t cpu_aligned_stack_t;
111 #warning Verify following costant
112 #define SIZEOF_CPUSTACK_T 2
113 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
117 typedef uint8_t cpu_flags_t;
118 typedef uint8_t cpu_atomic_t;
119 typedef uint8_t cpu_stack_t;
120 typedef cpu_stack_t cpu_aligned_stack_t;
121 #define SIZEOF_CPUSTACK_T 1
122 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
126 typedef uint16_t cpu_flags_t;
127 typedef uint16_t cpu_stack_t;
128 typedef cpu_stack_t cpu_aligned_stack_t;
129 #define SIZEOF_CPUSTACK_T 2
130 #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
133 #error No CPU_... defined.
137 * \name Default type sizes.
139 * These defaults are reasonable for most 16/32bit machines.
140 * Some of these macros may be overridden by CPU-specific code above.
142 * ANSI C requires that the following equations be true:
144 * sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long)
145 * sizeof(float) <= sizeof(double)
146 * CPU_BITS_PER_CHAR >= 8
147 * CPU_BITS_PER_SHORT >= 8
148 * CPU_BITS_PER_INT >= 16
149 * CPU_BITS_PER_LONG >= 32
154 #define SIZEOF_CHAR 1
158 #define SIZEOF_SHORT 2
162 #if CPU_REG_BITS < 32
167 #endif /* !SIZEOF_INT */
170 #if CPU_REG_BITS > 32
171 #define SIZEOF_LONG 8
173 #define SIZEOF_LONG 4
178 #if CPU_REG_BITS < 32
180 #elif CPU_REG_BITS == 32
182 #else /* CPU_REG_BITS > 32 */
187 #ifndef SIZEOF_SIZE_T
188 #if CPU_REG_BITS < 32
189 #define SIZEOF_SIZE_T 2
190 #elif CPU_REG_BITS == 32
191 #define SIZEOF_SIZE_T 4
192 #else /* CPU_REG_BITS > 32 */
193 #define SIZEOF_SIZE_T 8
197 #ifndef CPU_BITS_PER_CHAR
198 #define CPU_BITS_PER_CHAR (SIZEOF_CHAR * 8)
201 #ifndef CPU_BITS_PER_SHORT
202 #define CPU_BITS_PER_SHORT (SIZEOF_SHORT * CPU_BITS_PER_CHAR)
205 #ifndef CPU_BITS_PER_INT
206 #define CPU_BITS_PER_INT (SIZEOF_INT * CPU_BITS_PER_CHAR)
209 #ifndef CPU_BITS_PER_LONG
210 #define CPU_BITS_PER_LONG (SIZEOF_LONG * CPU_BITS_PER_CHAR)
213 #ifndef CPU_BITS_PER_PTR
214 #define CPU_BITS_PER_PTR (SIZEOF_PTR * CPU_BITS_PER_CHAR)
221 #define INT_MAX ((int)((unsigned int)~0 >> 1))
222 #define INT_MIN (-INT_MAX - 1)
225 /* Sanity checks for the above definitions */
226 STATIC_ASSERT(sizeof(char) == SIZEOF_CHAR);
227 STATIC_ASSERT(sizeof(short) == SIZEOF_SHORT);
228 STATIC_ASSERT(sizeof(long) == SIZEOF_LONG);
229 STATIC_ASSERT(sizeof(int) == SIZEOF_INT);
230 STATIC_ASSERT(sizeof(void *) == SIZEOF_PTR);
231 STATIC_ASSERT(sizeof(int8_t) * CPU_BITS_PER_CHAR == 8);
232 STATIC_ASSERT(sizeof(uint8_t) * CPU_BITS_PER_CHAR == 8);
233 STATIC_ASSERT(sizeof(int16_t) * CPU_BITS_PER_CHAR == 16);
234 STATIC_ASSERT(sizeof(uint16_t) * CPU_BITS_PER_CHAR == 16);
235 STATIC_ASSERT(sizeof(int32_t) * CPU_BITS_PER_CHAR == 32);
236 STATIC_ASSERT(sizeof(uint32_t) * CPU_BITS_PER_CHAR == 32);
237 #ifdef __HAS_INT64_T__
238 STATIC_ASSERT(sizeof(int64_t) * CPU_BITS_PER_CHAR == 64);
239 STATIC_ASSERT(sizeof(uint64_t) * CPU_BITS_PER_CHAR == 64);
241 STATIC_ASSERT(sizeof(cpu_stack_t) == SIZEOF_CPUSTACK_T);
242 STATIC_ASSERT(sizeof(cpu_aligned_stack_t) == SIZEOF_CPUALIGNED_T);
243 STATIC_ASSERT(sizeof(size_t) == SIZEOF_SIZE_T);
247 * Macros for hardware access, both direct and via the bit-band region.
250 #define HWREG(x) (*((reg32_t *)(x)))
251 #define HWREGH(x) (*((reg16_t *)(x)))
252 #define HWREGB(x) (*((reg8_t *)(x)))
255 #endif /* CPU_TYPES_H */