src/helper/types.h

   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2005 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifndef TYPES_H
  24 #define TYPES_H
  25
  26 #ifdef HAVE_SYS_TYPES_H
  27 #include <sys/types.h>
  28 #endif
  29 #include <stdint.h>
  30
  31 typedef struct jtag_tap_s jtag_tap_t;
  32
  33 #ifdef HAVE_STDBOOL_H
  34 #include <stdbool.h>
  35 #else   /* HAVE_STDBOOL_H */
  36 #define __bool_true_false_are_defined 1
  37
  38 #ifndef HAVE__BOOL
  39 #ifndef __cplusplus
  40
  41 #define false   0
  42 #define true            1
  43
  44 typedef int _Bool;
  45 #else
  46 typedef bool _Bool;
  47 #endif  /* __cplusplus */
  48 #endif  /* HAVE__BOOL */
  49
  50 #define bool _Bool
  51
  52 #endif  /* HAVE_STDBOOL_H */
  53
  54 /* DANGER!!!! here be dragons!
  55  *
  56  * Leave these fn's as byte accesses because it is safe
  57  * across architectures. Clever usage of 32 bit access
  58  * will create problems on some hosts.
  59  *
  60  * Note that the "buf" pointer in memory is probably unaligned.
  61  *
  62  * Were these functions to be re-written to take a 32 bit wide or 16 bit wide
  63  * memory access shortcut, then on some CPU's, i.e. ARM7, the 2 lsbytes of the address are
  64  * ignored for 32 bit access, whereas on other CPU's a 32 bit wide unaligned memory access
  65  * will cause an exception, and lastly on x86, an unaligned "greater than bytewide"
  66  * memory access works as if aligned.  So what follows below will work for all
  67  * platforms and gives the compiler leeway to do its own platform specific optimizations.
  68  *
  69  * Again, note that the "buf" pointer in memory is probably unaligned.
  70  */
  71
  72
  73 static inline uint32_t le_to_h_u32(const uint8_t* buf)
  74 {
  75         return (uint32_t)(buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24);
  76 }
  77
  78 static inline uint16_t le_to_h_u16(const uint8_t* buf)
  79 {
  80         return (uint16_t)(buf[0] | buf[1] << 8);
  81 }
  82
  83 static inline uint32_t be_to_h_u32(const uint8_t* buf)
  84 {
  85         return (uint32_t)(buf[3] | buf[2] << 8 | buf[1] << 16 | buf[0] << 24);
  86 }
  87
  88 static inline uint16_t be_to_h_u16(const uint8_t* buf)
  89 {
  90         return (uint16_t)(buf[1] | buf[0] << 8);
  91 }
  92
  93 static inline void h_u32_to_le(uint8_t* buf, int val)
  94 {
  95         buf[3] = (uint8_t) (val >> 24);
  96         buf[2] = (uint8_t) (val >> 16);
  97         buf[1] = (uint8_t) (val >> 8);
  98         buf[0] = (uint8_t) (val >> 0);
  99 }
 100
 101 static inline void h_u32_to_be(uint8_t* buf, int val)
 102 {
 103         buf[0] = (uint8_t) (val >> 24);
 104         buf[1] = (uint8_t) (val >> 16);
 105         buf[2] = (uint8_t) (val >> 8);
 106         buf[3] = (uint8_t) (val >> 0);
 107 }
 108
 109 static inline void h_u16_to_le(uint8_t* buf, int val)
 110 {
 111         buf[1] = (uint8_t) (val >> 8);
 112         buf[0] = (uint8_t) (val >> 0);
 113 }
 114
 115 static inline void h_u16_to_be(uint8_t* buf, int val)
 116 {
 117         buf[0] = (uint8_t) (val >> 8);
 118         buf[1] = (uint8_t) (val >> 0);
 119 }
 120
 121 #ifdef __ECOS
 122
 123 /* eCos plain lacks this definition... */
 124 typedef CYG_ADDRWORD intptr_t;
 125 typedef int64_t intmax_t;
 126 typedef uint64_t uintmax_t;
 127 #define INT8_MAX 0x7f
 128 #define INT8_MIN (-INT8_MAX - 1)
 129 # define UINT8_MAX              (255)
 130 #define INT16_MAX 0x7fff
 131 #define INT16_MIN (-INT16_MAX - 1)
 132 # define UINT16_MAX             (65535)
 133 #define INT32_MAX 0x7fffffffL
 134 #define INT32_MIN (-INT32_MAX - 1L)
 135 # define UINT32_MAX             (4294967295U)
 136 #define INT64_MAX 0x7fffffffffffffffLL
 137 #define INT64_MIN (-INT64_MAX - 1LL)
 138 #define UINT64_MAX (__CONCAT(INT64_MAX, U) * 2ULL + 1ULL)
 139
 140
 141
 142
 143 #endif
 144
 145 #endif /* TYPES_H */