sim/ppc/sim-endian.h

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, see <http://www.gnu.org/licenses/>.
  17
  18     */
  19
  20
  21 #ifndef _SIM_ENDIAN_H_
  22 #define _SIM_ENDIAN_H_
  23
  24
  25 /* C byte conversion functions */
  26
  27 INLINE_PSIM_ENDIAN(unsigned_1) endian_h2t_1(unsigned_1 x);
  28 INLINE_PSIM_ENDIAN(unsigned_2) endian_h2t_2(unsigned_2 x);
  29 INLINE_PSIM_ENDIAN(unsigned_4) endian_h2t_4(unsigned_4 x);
  30 INLINE_PSIM_ENDIAN(unsigned_8) endian_h2t_8(unsigned_8 x);
  31
  32 INLINE_PSIM_ENDIAN(unsigned_1) endian_t2h_1(unsigned_1 x);
  33 INLINE_PSIM_ENDIAN(unsigned_2) endian_t2h_2(unsigned_2 x);
  34 INLINE_PSIM_ENDIAN(unsigned_4) endian_t2h_4(unsigned_4 x);
  35 INLINE_PSIM_ENDIAN(unsigned_8) endian_t2h_8(unsigned_8 x);
  36
  37 INLINE_PSIM_ENDIAN(unsigned_1) swap_1(unsigned_1 x);
  38 INLINE_PSIM_ENDIAN(unsigned_2) swap_2(unsigned_2 x);
  39 INLINE_PSIM_ENDIAN(unsigned_4) swap_4(unsigned_4 x);
  40 INLINE_PSIM_ENDIAN(unsigned_8) swap_8(unsigned_8 x);
  41
  42 INLINE_PSIM_ENDIAN(unsigned_1) endian_h2be_1(unsigned_1 x);
  43 INLINE_PSIM_ENDIAN(unsigned_2) endian_h2be_2(unsigned_2 x);
  44 INLINE_PSIM_ENDIAN(unsigned_4) endian_h2be_4(unsigned_4 x);
  45 INLINE_PSIM_ENDIAN(unsigned_8) endian_h2be_8(unsigned_8 x);
  46
  47 INLINE_PSIM_ENDIAN(unsigned_1) endian_be2h_1(unsigned_1 x);
  48 INLINE_PSIM_ENDIAN(unsigned_2) endian_be2h_2(unsigned_2 x);
  49 INLINE_PSIM_ENDIAN(unsigned_4) endian_be2h_4(unsigned_4 x);
  50 INLINE_PSIM_ENDIAN(unsigned_8) endian_be2h_8(unsigned_8 x);
  51
  52 INLINE_PSIM_ENDIAN(unsigned_1) endian_h2le_1(unsigned_1 x);
  53 INLINE_PSIM_ENDIAN(unsigned_2) endian_h2le_2(unsigned_2 x);
  54 INLINE_PSIM_ENDIAN(unsigned_4) endian_h2le_4(unsigned_4 x);
  55 INLINE_PSIM_ENDIAN(unsigned_8) endian_h2le_8(unsigned_8 x);
  56
  57 INLINE_PSIM_ENDIAN(unsigned_1) endian_le2h_1(unsigned_1 x);
  58 INLINE_PSIM_ENDIAN(unsigned_2) endian_le2h_2(unsigned_2 x);
  59 INLINE_PSIM_ENDIAN(unsigned_4) endian_le2h_4(unsigned_4 x);
  60 INLINE_PSIM_ENDIAN(unsigned_8) endian_le2h_8(unsigned_8 x);
  61
  62
  63 /* SWAP */
  64
  65 #define SWAP_1 swap_1
  66 #define SWAP_2 swap_2
  67 #define SWAP_4 swap_4
  68 #define SWAP_8 swap_8
  69
  70
  71 /* HOST to BE */
  72
  73 #define H2BE_1 endian_h2be_1
  74 #define H2BE_2 endian_h2be_2
  75 #define H2BE_4 endian_h2be_4
  76 #define H2BE_8 endian_h2be_8
  77 #define BE2H_1 endian_be2h_1
  78 #define BE2H_2 endian_be2h_2
  79 #define BE2H_4 endian_be2h_4
  80 #define BE2H_8 endian_be2h_8
  81
  82
  83 /* HOST to LE */
  84
  85 #define H2LE_1 endian_h2le_1
  86 #define H2LE_2 endian_h2le_2
  87 #define H2LE_4 endian_h2le_4
  88 #define H2LE_8 endian_h2le_8
  89 #define LE2H_1 endian_le2h_1
  90 #define LE2H_2 endian_le2h_2
  91 #define LE2H_4 endian_le2h_4
  92 #define LE2H_8 endian_le2h_8
  93
  94
  95 /* HOST to TARGET */
  96
  97 #define H2T_1 endian_h2t_1
  98 #define H2T_2 endian_h2t_2
  99 #define H2T_4 endian_h2t_4
 100 #define H2T_8 endian_h2t_8
 101 #define T2H_1 endian_t2h_1
 102 #define T2H_2 endian_t2h_2
 103 #define T2H_4 endian_t2h_4
 104 #define T2H_8 endian_t2h_8
 105
 106
 107 /* CONVERT IN PLACE
 108
 109    These macros, given an argument of unknown size, swap its value in
 110    place if a host/target conversion is required. */
 111
 112 #define H2T(VARIABLE) \
 113 do { \
 114   switch (sizeof(VARIABLE)) { \
 115   case 1: VARIABLE = H2T_1(VARIABLE); break; \
 116   case 2: VARIABLE = H2T_2(VARIABLE); break; \
 117   case 4: VARIABLE = H2T_4(VARIABLE); break; \
 118   case 8: VARIABLE = H2T_8(VARIABLE); break; \
 119   } \
 120 } while (0)
 121
 122 #define T2H(VARIABLE) \
 123 do { \
 124   switch (sizeof(VARIABLE)) { \
 125   case 1: VARIABLE = T2H_1(VARIABLE); break; \
 126   case 2: VARIABLE = T2H_2(VARIABLE); break; \
 127   case 4: VARIABLE = T2H_4(VARIABLE); break; \
 128   case 8: VARIABLE = T2H_8(VARIABLE); break; \
 129   } \
 130 } while (0)
 131
 132 #define SWAP(VARIABLE) \
 133 do { \
 134   switch (sizeof(VARIABLE)) { \
 135   case 1: VARIABLE = SWAP_1(VARIABLE); break; \
 136   case 2: VARIABLE = SWAP_2(VARIABLE); break; \
 137   case 4: VARIABLE = SWAP_4(VARIABLE); break; \
 138   case 8: VARIABLE = SWAP_8(VARIABLE); break; \
 139   } \
 140 } while (0)
 141
 142 #define H2BE(VARIABLE) \
 143 do { \
 144   switch (sizeof(VARIABLE)) { \
 145   case 1: VARIABLE = H2BE_1(VARIABLE); break; \
 146   case 2: VARIABLE = H2BE_2(VARIABLE); break; \
 147   case 4: VARIABLE = H2BE_4(VARIABLE); break; \
 148   case 8: VARIABLE = H2BE_8(VARIABLE); break; \
 149   } \
 150 } while (0)
 151
 152 #define BE2H(VARIABLE) \
 153 do { \
 154   switch (sizeof(VARIABLE)) { \
 155   case 1: VARIABLE = BE2H_1(VARIABLE); break; \
 156   case 2: VARIABLE = BE2H_2(VARIABLE); break; \
 157   case 4: VARIABLE = BE2H_4(VARIABLE); break; \
 158   case 8: VARIABLE = BE2H_8(VARIABLE); break; \
 159   } \
 160 } while (0)
 161
 162 #define H2LE(VARIABLE) \
 163 do { \
 164   switch (sizeof(VARIABLE)) { \
 165   case 1: VARIABLE = H2LE_1(VARIABLE); break; \
 166   case 2: VARIABLE = H2LE_2(VARIABLE); break; \
 167   case 4: VARIABLE = H2LE_4(VARIABLE); break; \
 168   case 8: VARIABLE = H2LE_8(VARIABLE); break; \
 169   } \
 170 } while (0)
 171
 172 #define LE2H(VARIABLE) \
 173 do { \
 174   switch (sizeof(VARIABLE)) { \
 175   case 1: VARIABLE = LE2H_1(VARIABLE); break; \
 176   case 2: VARIABLE = LE2H_2(VARIABLE); break; \
 177   case 4: VARIABLE = LE2H_4(VARIABLE); break; \
 178   case 8: VARIABLE = LE2H_8(VARIABLE); break; \
 179   } \
 180 } while (0)
 181
 182
 183
 184 /* TARGET WORD:
 185
 186    Byte swap a quantity the size of the targets word */
 187
 188 #if (WITH_TARGET_WORD_BITSIZE == 64)
 189 #define H2T_word H2T_8
 190 #define T2H_word T2H_8
 191 #define H2BE_word H2BE_8
 192 #define BE2H_word BE2H_8
 193 #define H2LE_word H2LE_8
 194 #define LE2H_word LE2H_8
 195 #define SWAP_word SWAP_8
 196 #endif
 197 #if (WITH_TARGET_WORD_BITSIZE == 32)
 198 #define H2T_word H2T_4
 199 #define T2H_word T2H_4
 200 #define H2BE_word H2BE_4
 201 #define BE2H_word BE2H_4
 202 #define H2LE_word H2LE_4
 203 #define LE2H_word LE2H_4
 204 #define SWAP_word SWAP_4
 205 #endif
 206
 207
 208 /* TARGET CELL:
 209
 210    Byte swap a quantity the size of the targets IEEE 1275 memory cell */
 211
 212 #define H2T_cell H2T_4
 213 #define T2H_cell T2H_4
 214 #define H2BE_cell H2BE_4
 215 #define BE2H_cell BE2H_4
 216 #define H2LE_cell H2LE_4
 217 #define LE2H_cell LE2H_4
 218 #define SWAP_cell SWAP_4
 219
 220
 221 #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
 222 # include "sim-endian.c"
 223 #endif
 224
 225 #endif /* _SIM_ENDIAN_H_ */