bertos/cpu/types.h

   1 /**
   2  * \file
   3  * <!--
   4  * This file is part of BeRTOS.
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  *
  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.
  28  *
  29  * Copyright 2004, 2005, 2006, 2007 Develer S.r.l. (http://www.develer.com/)
  30  * Copyright 2004 Giovanni Bajo
  31  *
  32  * -->
  33  *
  34  * \brief CPU-specific type definitions.
  35  *
  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>
  40  */
  41 #ifndef CPU_TYPES_H
  42 #define CPU_TYPES_H
  43
  44 #include "detect.h"
  45 #include "attr.h"
  46 #include <cfg/compiler.h> /* for uintXX_t */
  47
  48 #if CPU_I196
  49
  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
  57
  58 #elif CPU_X86
  59
  60         /* Get cpu_flags_t definition from the hosting environment. */
  61         #include <cfg/os.h>
  62         #if OS_EMBEDDED
  63                 typedef uint32_t cpu_flags_t; // FIXME
  64         #endif /* OS_EMBEDDED */
  65
  66         typedef uint32_t cpu_atomic_t;
  67
  68         #if CPU_X86_64
  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
  73         #else
  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
  78         #endif
  79
  80 #elif CPU_ARM || CPU_CM3
  81
  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
  86
  87         #if CPU_ARM
  88                 typedef uint64_t cpu_aligned_stack_t;
  89                 #define SIZEOF_CPUALIGNED_T 8
  90         #elif CPU_CM3
  91                 typedef uint32_t cpu_aligned_stack_t;
  92                 #define SIZEOF_CPUALIGNED_T 4
  93         #else
  94                 #error CPU configuration error
  95         #endif
  96
  97 #elif CPU_PPC
  98
  99         /* Get cpu_flags_t definition from the hosting environment. */
 100         #include <cfg/os.h>
 101         #if OS_EMBEDDED
 102                 typedef uint32_t cpu_flags_t;
 103         #endif
 104
 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
 110
 111 #elif CPU_DSP56K
 112
 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
 120
 121 #elif CPU_AVR
 122
 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
 129
 130 #else
 131         #error No CPU_... defined.
 132 #endif
 133
 134 /**
 135  * \name Default type sizes.
 136  *
 137  * These defaults are reasonable for most 16/32bit machines.
 138  * Some of these macros may be overridden by CPU-specific code above.
 139  *
 140  * ANSI C requires that the following equations be true:
 141  * \code
 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
 148  * \endcode
 149  * \{
 150  */
 151 #ifndef SIZEOF_CHAR
 152 #define SIZEOF_CHAR  1
 153 #endif
 154
 155 #ifndef SIZEOF_SHORT
 156 #define SIZEOF_SHORT  2
 157 #endif
 158
 159 #ifndef SIZEOF_INT
 160 #if CPU_REG_BITS < 32
 161         #define SIZEOF_INT  2
 162 #else
 163         #define SIZEOF_INT  4
 164 #endif
 165 #endif /* !SIZEOF_INT */
 166
 167 #ifndef SIZEOF_LONG
 168 #if CPU_REG_BITS > 32
 169         #define SIZEOF_LONG  8
 170 #else
 171         #define SIZEOF_LONG  4
 172 #endif
 173 #endif
 174
 175 #ifndef SIZEOF_PTR
 176 #if CPU_REG_BITS < 32
 177         #define SIZEOF_PTR   2
 178 #elif CPU_REG_BITS == 32
 179         #define SIZEOF_PTR   4
 180 #else /* CPU_REG_BITS > 32 */
 181         #define SIZEOF_PTR   8
 182 #endif
 183 #endif
 184
 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
 192 #endif
 193 #endif
 194
 195 #ifndef CPU_BITS_PER_CHAR
 196 #define CPU_BITS_PER_CHAR   (SIZEOF_CHAR * 8)
 197 #endif
 198
 199 #ifndef CPU_BITS_PER_SHORT
 200 #define CPU_BITS_PER_SHORT  (SIZEOF_SHORT * CPU_BITS_PER_CHAR)
 201 #endif
 202
 203 #ifndef CPU_BITS_PER_INT
 204 #define CPU_BITS_PER_INT    (SIZEOF_INT * CPU_BITS_PER_CHAR)
 205 #endif
 206
 207 #ifndef CPU_BITS_PER_LONG
 208 #define CPU_BITS_PER_LONG   (SIZEOF_LONG * CPU_BITS_PER_CHAR)
 209 #endif
 210
 211 #ifndef CPU_BITS_PER_PTR
 212 #define CPU_BITS_PER_PTR    (SIZEOF_PTR * CPU_BITS_PER_CHAR)
 213 #endif
 214
 215
 216 /*\}*/
 217
 218 #ifndef INT_MAX
 219         #define INT_MAX ((int)((unsigned int)~0 >> 1))
 220         #define INT_MIN (-INT_MAX - 1)
 221 #endif
 222
 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);
 238 #endif
 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);
 242
 243 #endif /* CPU_TYPES_H */