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
  81
  82         typedef uint32_t cpu_flags_t;
  83         typedef uint32_t cpu_atomic_t;
  84         typedef uint32_t cpu_stack_t;
  85         typedef uint64_t cpu_aligned_stack_t;
  86         #define SIZEOF_CPUSTACK_T 4
  87         #define SIZEOF_CPUALIGNED_T 8
  88
  89 #elif CPU_PPC
  90
  91         /* Get cpu_flags_t definition from the hosting environment. */
  92         #include <cfg/os.h>
  93         #if OS_EMBEDDED
  94                 typedef uint32_t cpu_flags_t;
  95         #endif
  96
  97         typedef uint32_t cpu_atomic_t;
  98         typedef uint32_t cpu_stack_t;
  99         typedef  cpu_stack_t cpu_aligned_stack_t;
 100         #define SIZEOF_CPUSTACK_T 4
 101         #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
 102
 103 #elif CPU_DSP56K
 104
 105         typedef uint16_t cpu_flags_t;
 106         typedef uint16_t cpu_atomic_t;
 107         typedef unsigned int cpu_stack_t;
 108         typedef cpu_stack_t cpu_aligned_stack_t;
 109         #warning Verify following costant
 110         #define SIZEOF_CPUSTACK_T 2
 111         #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
 112
 113 #elif CPU_AVR
 114
 115         typedef uint8_t cpu_flags_t;
 116         typedef uint8_t cpu_atomic_t;
 117         typedef uint8_t cpu_stack_t;
 118         typedef cpu_stack_t cpu_aligned_stack_t;
 119         #define SIZEOF_CPUSTACK_T 1
 120         #define SIZEOF_CPUALIGNED_T SIZEOF_CPUSTACK_T
 121
 122 #else
 123         #error No CPU_... defined.
 124 #endif
 125
 126 /**
 127  * \name Default type sizes.
 128  *
 129  * These defaults are reasonable for most 16/32bit machines.
 130  * Some of these macros may be overridden by CPU-specific code above.
 131  *
 132  * ANSI C requires that the following equations be true:
 133  * \code
 134  *   sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long)
 135  *   sizeof(float) <= sizeof(double)
 136  *   CPU_BITS_PER_CHAR  >= 8
 137  *   CPU_BITS_PER_SHORT >= 8
 138  *   CPU_BITS_PER_INT   >= 16
 139  *   CPU_BITS_PER_LONG  >= 32
 140  * \endcode
 141  * \{
 142  */
 143 #ifndef SIZEOF_CHAR
 144 #define SIZEOF_CHAR  1
 145 #endif
 146
 147 #ifndef SIZEOF_SHORT
 148 #define SIZEOF_SHORT  2
 149 #endif
 150
 151 #ifndef SIZEOF_INT
 152 #if CPU_REG_BITS < 32
 153         #define SIZEOF_INT  2
 154 #else
 155         #define SIZEOF_INT  4
 156 #endif
 157 #endif /* !SIZEOF_INT */
 158
 159 #ifndef SIZEOF_LONG
 160 #if CPU_REG_BITS > 32
 161         #define SIZEOF_LONG  8
 162 #else
 163         #define SIZEOF_LONG  4
 164 #endif
 165 #endif
 166
 167 #ifndef SIZEOF_PTR
 168 #if CPU_REG_BITS < 32
 169         #define SIZEOF_PTR   2
 170 #elif CPU_REG_BITS == 32
 171         #define SIZEOF_PTR   4
 172 #else /* CPU_REG_BITS > 32 */
 173         #define SIZEOF_PTR   8
 174 #endif
 175 #endif
 176
 177 #ifndef SIZEOF_SIZE_T
 178 #if CPU_REG_BITS < 32
 179         #define SIZEOF_SIZE_T   2
 180 #elif CPU_REG_BITS == 32
 181         #define SIZEOF_SIZE_T   4
 182 #else /* CPU_REG_BITS > 32 */
 183         #define SIZEOF_SIZE_T   8
 184 #endif
 185 #endif
 186
 187 #ifndef CPU_BITS_PER_CHAR
 188 #define CPU_BITS_PER_CHAR   (SIZEOF_CHAR * 8)
 189 #endif
 190
 191 #ifndef CPU_BITS_PER_SHORT
 192 #define CPU_BITS_PER_SHORT  (SIZEOF_SHORT * CPU_BITS_PER_CHAR)
 193 #endif
 194
 195 #ifndef CPU_BITS_PER_INT
 196 #define CPU_BITS_PER_INT    (SIZEOF_INT * CPU_BITS_PER_CHAR)
 197 #endif
 198
 199 #ifndef CPU_BITS_PER_LONG
 200 #define CPU_BITS_PER_LONG   (SIZEOF_LONG * CPU_BITS_PER_CHAR)
 201 #endif
 202
 203 #ifndef CPU_BITS_PER_PTR
 204 #define CPU_BITS_PER_PTR    (SIZEOF_PTR * CPU_BITS_PER_CHAR)
 205 #endif
 206
 207
 208 /*\}*/
 209
 210 #ifndef INT_MAX
 211         #define INT_MAX ((int)((unsigned int)~0 >> 1))
 212         #define INT_MIN (-INT_MAX - 1)
 213 #endif
 214
 215 /* Sanity checks for the above definitions */
 216 STATIC_ASSERT(sizeof(char) == SIZEOF_CHAR);
 217 STATIC_ASSERT(sizeof(short) == SIZEOF_SHORT);
 218 STATIC_ASSERT(sizeof(long) == SIZEOF_LONG);
 219 STATIC_ASSERT(sizeof(int) == SIZEOF_INT);
 220 STATIC_ASSERT(sizeof(void *) == SIZEOF_PTR);
 221 STATIC_ASSERT(sizeof(int8_t) * CPU_BITS_PER_CHAR == 8);
 222 STATIC_ASSERT(sizeof(uint8_t) * CPU_BITS_PER_CHAR == 8);
 223 STATIC_ASSERT(sizeof(int16_t) * CPU_BITS_PER_CHAR == 16);
 224 STATIC_ASSERT(sizeof(uint16_t) * CPU_BITS_PER_CHAR == 16);
 225 STATIC_ASSERT(sizeof(int32_t) * CPU_BITS_PER_CHAR == 32);
 226 STATIC_ASSERT(sizeof(uint32_t) * CPU_BITS_PER_CHAR == 32);
 227 #ifdef __HAS_INT64_T__
 228 STATIC_ASSERT(sizeof(int64_t) * CPU_BITS_PER_CHAR == 64);
 229 STATIC_ASSERT(sizeof(uint64_t) * CPU_BITS_PER_CHAR == 64);
 230 #endif
 231 STATIC_ASSERT(sizeof(cpu_stack_t) == SIZEOF_CPUSTACK_T);
 232 STATIC_ASSERT(sizeof(cpu_aligned_stack_t) == SIZEOF_CPUALIGNED_T);
 233 STATIC_ASSERT(sizeof(size_t) == SIZEOF_SIZE_T);
 234
 235 #endif /* CPU_TYPES_H */