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 #ifdef HAVE_STDINT_H
  30 #include <stdint.h>
  31 #endif
  32
  33 #ifndef u8
  34 typedef unsigned char u8;
  35 #endif
  36
  37 #ifndef u16
  38 typedef unsigned short u16;
  39 #endif
  40
  41 #ifndef u32
  42 typedef unsigned int u32;
  43 #endif
  44
  45 #ifndef u64
  46 typedef unsigned long long u64;
  47 #endif
  48
  49 typedef struct jtag_tap_s jtag_tap_t;
  50
  51 #ifdef HAVE_STDBOOL_H
  52 #include <stdbool.h>
  53 #else   /* HAVE_STDBOOL_H */
  54 #define __bool_true_false_are_defined 1
  55
  56 #ifndef HAVE__BOOL
  57 #ifndef __cplusplus
  58
  59 #define false   0
  60 #define true            1
  61
  62 typedef int _Bool;
  63 #else
  64 typedef bool _Bool;
  65 #endif  /* __cplusplus */
  66 #endif  /* HAVE__BOOL */
  67
  68 #define bool _Bool
  69
  70 #endif  /* HAVE_STDBOOL_H */
  71
  72 /* DANGER!!!! here be dragons!
  73  *
  74  * Leave these fn's as byte accesses because it is safe
  75  * across architectures. Clever usage of 32 bit access
  76  * will create problems on some hosts.
  77  *
  78  * Note that the "buf" pointer in memory is probably unaligned.
  79  *
  80  * Were these functions to be re-written to take a 32 bit wide or 16 bit wide
  81  * memory access shortcut, then on some CPU's, i.e. ARM7, the 2 lsbytes of the address are
  82  * ignored for 32 bit access, whereas on other CPU's a 32 bit wide unaligned memory access
  83  * will cause an exception, and lastly on x86, an unaligned "greater than bytewide"
  84  * memory access works as if aligned.  So what follows below will work for all
  85  * platforms and gives the compiler leeway to do its own platform specific optimizations.
  86  *
  87  * Again, note that the "buf" pointer in memory is probably unaligned.
  88  */
  89
  90
  91 static inline u32 le_to_h_u32(const u8* buf)
  92 {
  93         return (u32)(buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24);
  94 }
  95
  96 static inline u16 le_to_h_u16(const u8* buf)
  97 {
  98         return (u16)(buf[0] | buf[1] << 8);
  99 }
 100
 101 static inline u32 be_to_h_u32(const u8* buf)
 102 {
 103         return (u32)(buf[3] | buf[2] << 8 | buf[1] << 16 | buf[0] << 24);
 104 }
 105
 106 static inline u16 be_to_h_u16(const u8* buf)
 107 {
 108         return (u16)(buf[1] | buf[0] << 8);
 109 }
 110
 111 static inline void h_u32_to_le(u8* buf, int val)
 112 {
 113         buf[3] = (u8) (val >> 24);
 114         buf[2] = (u8) (val >> 16);
 115         buf[1] = (u8) (val >> 8);
 116         buf[0] = (u8) (val >> 0);
 117 }
 118
 119 static inline void h_u32_to_be(u8* buf, int val)
 120 {
 121         buf[0] = (u8) (val >> 24);
 122         buf[1] = (u8) (val >> 16);
 123         buf[2] = (u8) (val >> 8);
 124         buf[3] = (u8) (val >> 0);
 125 }
 126
 127 static inline void h_u16_to_le(u8* buf, int val)
 128 {
 129         buf[1] = (u8) (val >> 8);
 130         buf[0] = (u8) (val >> 0);
 131 }
 132
 133 static inline void h_u16_to_be(u8* buf, int val)
 134 {
 135         buf[0] = (u8) (val >> 8);
 136         buf[1] = (u8) (val >> 0);
 137 }
 138
 139 #ifdef __ECOS
 140 /* eCos plain lacks this definition... */
 141 typedef CYG_ADDRWORD intptr_t;
 142 typedef int64_t intmax_t;
 143 typedef uint64_t uintmax_t;
 144 #define INT8_MAX 0x7f
 145 #define INT8_MIN (-INT8_MAX - 1)
 146 #define UINT8_MAX (__CONCAT(INT8_MAX, U) * 2U + 1U)
 147 #define INT16_MAX 0x7fff
 148 #define INT16_MIN (-INT16_MAX - 1)
 149 #define UINT16_MAX (__CONCAT(INT16_MAX, U) * 2U + 1U)
 150 #define INT32_MAX 0x7fffffffL
 151 #define INT32_MIN (-INT32_MAX - 1L)
 152 #define UINT32_MAX (__CONCAT(INT32_MAX, U) * 2UL + 1UL)
 153 #define INT64_MAX 0x7fffffffffffffffLL
 154 #define INT64_MIN (-INT64_MAX - 1LL)
 155 #define UINT64_MAX (__CONCAT(INT64_MAX, U) * 2ULL + 1ULL)
 156 #endif
 157
 158 #endif /* TYPES_H */