sim/common/sim-n-endian.h

   1 /* The common simulator framework for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007, 2008, 2009 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney and Red Hat.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22
  23 #ifndef N
  24 #error "N must be #defined"
  25 #endif
  26
  27 #include "symcat.h"
  28
  29 /* NOTE: See end of file for #undef */
  30 #define unsigned_N XCONCAT2(unsigned_,N)
  31 #define endian_t2h_N XCONCAT2(endian_t2h_,N)
  32 #define endian_h2t_N XCONCAT2(endian_h2t_,N)
  33 #define _SWAP_N XCONCAT2(_SWAP_,N)
  34 #define swap_N XCONCAT2(swap_,N)
  35 #define endian_h2be_N XCONCAT2(endian_h2be_,N)
  36 #define endian_be2h_N XCONCAT2(endian_be2h_,N)
  37 #define endian_h2le_N XCONCAT2(endian_h2le_,N)
  38 #define endian_le2h_N XCONCAT2(endian_le2h_,N)
  39 #define offset_N XCONCAT2(offset_,N)
  40
  41 /* TAGS: endian_t2h_1 endian_t2h_2 endian_t2h_4 endian_t2h_8 endian_t2h_16 */
  42
  43 INLINE_SIM_ENDIAN\
  44 (unsigned_N)
  45 endian_t2h_N(unsigned_N raw_in)
  46 {
  47   if (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER) {
  48     return raw_in;
  49   }
  50   else {
  51     _SWAP_N(return,raw_in);
  52   }
  53 }
  54
  55 /* TAGS: endian_h2t_1 endian_h2t_2 endian_h2t_4 endian_h2t_8 endian_h2t_16 */
  56
  57 INLINE_SIM_ENDIAN\
  58 (unsigned_N)
  59 endian_h2t_N(unsigned_N raw_in)
  60 {
  61   if (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER) {
  62     return raw_in;
  63   }
  64   else {
  65     _SWAP_N(return,raw_in);
  66   }
  67 }
  68
  69 /* TAGS: swap_1 swap_2 swap_4 swap_8 swap_16 */
  70
  71 INLINE_SIM_ENDIAN\
  72 (unsigned_N)
  73 swap_N(unsigned_N raw_in)
  74 {
  75   _SWAP_N(return,raw_in);
  76 }
  77
  78 /* TAGS: endian_h2be_1 endian_h2be_2 endian_h2be_4 endian_h2be_8 endian_h2be_16 */
  79
  80 INLINE_SIM_ENDIAN\
  81 (unsigned_N)
  82 endian_h2be_N(unsigned_N raw_in)
  83 {
  84   if (CURRENT_HOST_BYTE_ORDER == BIG_ENDIAN) {
  85     return raw_in;
  86   }
  87   else {
  88     _SWAP_N(return,raw_in);
  89   }
  90 }
  91
  92 /* TAGS: endian_be2h_1 endian_be2h_2 endian_be2h_4 endian_be2h_8 endian_be2h_16 */
  93
  94 INLINE_SIM_ENDIAN\
  95 (unsigned_N)
  96 endian_be2h_N(unsigned_N raw_in)
  97 {
  98   if (CURRENT_HOST_BYTE_ORDER == BIG_ENDIAN) {
  99     return raw_in;
 100   }
 101   else {
 102     _SWAP_N(return,raw_in);
 103   }
 104 }
 105
 106 /* TAGS: endian_h2le_1 endian_h2le_2 endian_h2le_4 endian_h2le_8 endian_h2le_16 */
 107
 108 INLINE_SIM_ENDIAN\
 109 (unsigned_N)
 110 endian_h2le_N(unsigned_N raw_in)
 111 {
 112   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) {
 113     return raw_in;
 114   }
 115   else {
 116     _SWAP_N(return,raw_in);
 117   }
 118 }
 119
 120 /* TAGS: endian_le2h_1 endian_le2h_2 endian_le2h_4 endian_le2h_8 endian_le2h_16 */
 121
 122 INLINE_SIM_ENDIAN\
 123 (unsigned_N)
 124 endian_le2h_N(unsigned_N raw_in)
 125 {
 126   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) {
 127     return raw_in;
 128   }
 129   else {
 130     _SWAP_N(return,raw_in);
 131   }
 132 }
 133
 134 /* TAGS: offset_1 offset_2 offset_4 offset_8 offset_16 */
 135
 136 INLINE_SIM_ENDIAN\
 137 (void*)
 138 offset_N (unsigned_N *x,
 139           unsigned sizeof_word,
 140           unsigned word)
 141 {
 142   char *in = (char*)x;
 143   char *out;
 144   unsigned offset = sizeof_word * word;
 145   ASSERT (offset + sizeof_word <= sizeof(unsigned_N));
 146   ASSERT (word < (sizeof (unsigned_N) / sizeof_word));
 147   ASSERT ((sizeof (unsigned_N) % sizeof_word) == 0);
 148   if (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 149     {
 150       out = in + sizeof (unsigned_N) - offset - sizeof_word;
 151     }
 152   else
 153     {
 154       out = in + offset;
 155     }
 156   return out;
 157 }
 158
 159
 160 /* NOTE: See start of file for #define */
 161 #undef unsigned_N
 162 #undef endian_t2h_N
 163 #undef endian_h2t_N
 164 #undef _SWAP_N
 165 #undef swap_N
 166 #undef endian_h2be_N
 167 #undef endian_be2h_N
 168 #undef endian_h2le_N
 169 #undef endian_le2h_N
 170 #undef offset_N