include/io.h

   1 /* -------------------------------- Arctic Core ------------------------------
   2  * Copyright (C) 2009-2011 ArcCore AB <contact@arccore.com>
   3  * Licensed under ArcCore Embedded Software License Agreement.
   4  * -------------------------------- Arctic Core ------------------------------*/
   5
   6 #ifndef IO_H_
   7 #define IO_H_
   8
   9 #define WRITE8(address, value)      (*(uint8_t*)(address) = (value))
  10 #define READ8(address)              ((uint8_t)(*(uint8_t*)(address)))
  11
  12 #define WRITE16(address, value)     (*(vuint16_t*)(address) = (value))
  13 #define READ16(address)             ((uint16_t)(*(vuint16_t*)(address)))
  14
  15 #define WRITE32(address, value)     (*(vuint32_t*)(address) = (value))
  16 #define READ32(address)             ((uint32_t)(*(vuint32_t*)(address)))
  17
  18 #define WRITE64(address, value)     (*(vuint64_t*)(address) = (value))
  19 #define READ64(address)             ((uint64_t)(*(vuint64_t*)(address)))
  20
  21 /* Not aligned reads */
  22 #define READ32_NA(address )                     ( (((uint32_t)(((uint8_t *)address)[0]))<<24) + \
  23                                                                           (((uint32_t)(((uint8_t *)address)[1]))<<16) + \
  24                                                                           (((uint32_t)(((uint8_t *)address)[2]))<<8) +  \
  25                                                                           ((uint32_t)(((uint8_t *)address)[3])) )
  26
  27 #define READ16_NA(address )                     ( (((uint32_t)(((uint8_t *)address)[0]))<<8) +  \
  28                                                                           (((uint32_t)(((uint8_t *)address)[1]))) )
  29
  30 #define WRITE32_NA(address, value ) \
  31         do { \
  32         ((uint8_t *)address)[0] = ((value&0xff)<<24); \
  33         ((uint8_t *)address)[1] = ((value&0xff)<<16); \
  34         ((uint8_t *)address)[2] = ((value&0xff)<<8);  \
  35         ((uint8_t *)address)[3] = ((value&0xff)); \
  36         } while(0)
  37
  38 #define WRITE16_NA(address, value ) \
  39         do { \
  40         ((uint8_t *)address)[0] = ((value&0xff)<<8); \
  41         ((uint8_t *)address)[1] = ((value&0xff)); \
  42         } while(0)
  43
  44
  45
  46 #endif /* IO_H_ */