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 2 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, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #ifndef _SIM_ENDIAN_H_
  23 #define _SIM_ENDIAN_H_
  24
  25
  26 /* C byte conversion functions */
  27
  28 INLINE_SIM_ENDIAN(unsigned_1) endian_h2t_1(unsigned_1 x);
  29 INLINE_SIM_ENDIAN(unsigned_2) endian_h2t_2(unsigned_2 x);
  30 INLINE_SIM_ENDIAN(unsigned_4) endian_h2t_4(unsigned_4 x);
  31 INLINE_SIM_ENDIAN(unsigned_8) endian_h2t_8(unsigned_8 x);
  32
  33 INLINE_SIM_ENDIAN(unsigned_1) endian_t2h_1(unsigned_1 x);
  34 INLINE_SIM_ENDIAN(unsigned_2) endian_t2h_2(unsigned_2 x);
  35 INLINE_SIM_ENDIAN(unsigned_4) endian_t2h_4(unsigned_4 x);
  36 INLINE_SIM_ENDIAN(unsigned_8) endian_t2h_8(unsigned_8 x);
  37
  38 INLINE_SIM_ENDIAN(unsigned_1) swap_1(unsigned_1 x);
  39 INLINE_SIM_ENDIAN(unsigned_2) swap_2(unsigned_2 x);
  40 INLINE_SIM_ENDIAN(unsigned_4) swap_4(unsigned_4 x);
  41 INLINE_SIM_ENDIAN(unsigned_8) swap_8(unsigned_8 x);
  42
  43 INLINE_SIM_ENDIAN(unsigned_1) endian_h2be_1(unsigned_1 x);
  44 INLINE_SIM_ENDIAN(unsigned_2) endian_h2be_2(unsigned_2 x);
  45 INLINE_SIM_ENDIAN(unsigned_4) endian_h2be_4(unsigned_4 x);
  46 INLINE_SIM_ENDIAN(unsigned_8) endian_h2be_8(unsigned_8 x);
  47
  48 INLINE_SIM_ENDIAN(unsigned_1) endian_be2h_1(unsigned_1 x);
  49 INLINE_SIM_ENDIAN(unsigned_2) endian_be2h_2(unsigned_2 x);
  50 INLINE_SIM_ENDIAN(unsigned_4) endian_be2h_4(unsigned_4 x);
  51 INLINE_SIM_ENDIAN(unsigned_8) endian_be2h_8(unsigned_8 x);
  52
  53 INLINE_SIM_ENDIAN(unsigned_1) endian_h2le_1(unsigned_1 x);
  54 INLINE_SIM_ENDIAN(unsigned_2) endian_h2le_2(unsigned_2 x);
  55 INLINE_SIM_ENDIAN(unsigned_4) endian_h2le_4(unsigned_4 x);
  56 INLINE_SIM_ENDIAN(unsigned_8) endian_h2le_8(unsigned_8 x);
  57
  58 INLINE_SIM_ENDIAN(unsigned_1) endian_le2h_1(unsigned_1 x);
  59 INLINE_SIM_ENDIAN(unsigned_2) endian_le2h_2(unsigned_2 x);
  60 INLINE_SIM_ENDIAN(unsigned_4) endian_le2h_4(unsigned_4 x);
  61 INLINE_SIM_ENDIAN(unsigned_8) endian_le2h_8(unsigned_8 x);
  62
  63
  64 /* Host dependant:
  65
  66    The CPP below defines information about the compilation host.  In
  67    particular it defines the macro's:
  68
  69         WITH_HOST_BYTE_ORDER    The byte order of the host. Could
  70                                 be any of LITTLE_ENDIAN, BIG_ENDIAN
  71                                 or 0 (unknown).  Those macro's also
  72                                 need to be defined.
  73
  74  */
  75
  76
  77 /* NetBSD:
  78
  79    NetBSD is easy, everything you could ever want is in a header file
  80    (well almost :-) */
  81
  82 #if defined(__NetBSD__)
  83 # include <machine/endian.h>
  84 # if (WITH_HOST_BYTE_ORDER == 0)
  85 #  undef WITH_HOST_BYTE_ORDER
  86 #  define WITH_HOST_BYTE_ORDER BYTE_ORDER
  87 # endif
  88 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
  89 #  error "host endian incorrectly configured, check config.h"
  90 # endif
  91 #endif
  92
  93 /* Linux is similarly easy.  */
  94
  95 #if defined(__linux__)
  96 # include <endian.h>
  97 # include <asm/byteorder.h>
  98 # if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN)
  99 #  define LITTLE_ENDIAN __LITTLE_ENDIAN
 100 # endif
 101 # if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN)
 102 #  define BIG_ENDIAN __BIG_ENDIAN
 103 # endif
 104 # if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
 105 #  define BYTE_ORDER __BYTE_ORDER
 106 # endif
 107 # if (WITH_HOST_BYTE_ORDER == 0)
 108 #  undef WITH_HOST_BYTE_ORDER
 109 #  define WITH_HOST_BYTE_ORDER BYTE_ORDER
 110 # endif
 111 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
 112 #  error "host endian incorrectly configured, check config.h"
 113 # endif
 114 #endif
 115
 116 /* INSERT HERE - hosts that have available LITTLE_ENDIAN and
 117    BIG_ENDIAN macro's */
 118
 119
 120 /* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */
 121
 122 #ifndef LITTLE_ENDIAN
 123 #define LITTLE_ENDIAN 1234
 124 #endif
 125 #ifndef BIG_ENDIAN
 126 #define BIG_ENDIAN 4321
 127 #endif
 128
 129
 130 /* SunOS on SPARC:
 131
 132    Big endian last time I looked */
 133
 134 #if defined(sparc) || defined(__sparc__)
 135 # if (WITH_HOST_BYTE_ORDER == 0)
 136 #  undef WITH_HOST_BYTE_ORDER
 137 #  define WITH_HOST_BYTE_ORDER BIG_ENDIAN
 138 # endif
 139 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
 140 #  error "sun was big endian last time I looked ..."
 141 # endif
 142 #endif
 143
 144
 145 /* Random x86
 146
 147    Little endian last time I looked */
 148
 149 #if defined(i386) || defined(i486) || defined(i586) || defined (i686) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined (__i686__)
 150 # if (WITH_HOST_BYTE_ORDER == 0)
 151 #  undef WITH_HOST_BYTE_ORDER
 152 #  define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
 153 # endif
 154 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
 155 #  error "x86 was little endian last time I looked ..."
 156 # endif
 157 #endif
 158
 159 #if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
 160 #undef  htonl
 161 #undef  ntohl
 162 #define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
 163 #define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
 164 #endif
 165
 166 /* Power or PowerPC running AIX  */
 167 #if defined(_POWER) && defined(_AIX)
 168 # if (WITH_HOST_BYTE_ORDER == 0)
 169 #  undef WITH_HOST_BYTE_ORDER
 170 #  define WITH_HOST_BYTE_ORDER BIG_ENDIAN
 171 # endif
 172 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
 173 #  error "Power/PowerPC AIX was big endian last time I looked ..."
 174 # endif
 175 #endif
 176
 177 /* Solaris running PowerPC */
 178 #if defined(__PPC) && defined(__sun__)
 179 # if (WITH_HOST_BYTE_ORDER == 0)
 180 #  undef WITH_HOST_BYTE_ORDER
 181 #  define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
 182 # endif
 183 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
 184 #  error "Solaris on PowerPCs was little endian last time I looked ..."
 185 # endif
 186 #endif
 187
 188 /* HP/PA */
 189 #if defined(__hppa__)
 190 # if (WITH_HOST_BYTE_ORDER == 0)
 191 #  undef WITH_HOST_BYTE_ORDER
 192 #  define WITH_HOST_BYTE_ORDER BIG_ENDIAN
 193 # endif
 194 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
 195 #  error "HP/PA was big endian last time I looked ..."
 196 # endif
 197 #endif
 198
 199 /* Big endian MIPS */
 200 #if defined(__MIPSEB__)
 201 # if (WITH_HOST_BYTE_ORDER == 0)
 202 #  undef WITH_HOST_BYTE_ORDER
 203 #  define WITH_HOST_BYTE_ORDER BIG_ENDIAN
 204 # endif
 205 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
 206 #  error "MIPSEB was big endian last time I looked ..."
 207 # endif
 208 #endif
 209
 210 /* Little endian MIPS */
 211 #if defined(__MIPSEL__)
 212 # if (WITH_HOST_BYTE_ORDER == 0)
 213 #  undef WITH_HOST_BYTE_ORDER
 214 #  define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
 215 # endif
 216 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
 217 #  error "MIPSEL was little endian last time I looked ..."
 218 # endif
 219 #endif
 220
 221 /* Windows NT */
 222 #if defined(__WIN32__)
 223 # if (WITH_HOST_BYTE_ORDER == 0)
 224 #  undef WITH_HOST_BYTE_ORDER
 225 #  define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
 226 # endif
 227 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
 228 #  error "Windows NT was little endian last time I looked ..."
 229 # endif
 230 #endif
 231
 232 /* Alpha running DEC unix */
 233 #if defined(__osf__) && defined(__alpha__)
 234 # if (WITH_HOST_BYTE_ORDER == 0)
 235 #  undef WITH_HOST_BYTE_ORDER
 236 #  define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
 237 # endif
 238 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
 239 #  error "AXP running DEC unix was little endian last time I looked ..."
 240 # endif
 241 #endif
 242
 243
 244 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
 245    BIG_ENDIAN definitions available.  */
 246
 247 /* SWAP */
 248
 249 #define SWAP_1 swap_1
 250 #define SWAP_2 swap_2
 251 #define SWAP_4 swap_4
 252 #define SWAP_8 swap_8
 253
 254
 255 /* HOST to BE */
 256
 257 #define H2BE_1 endian_h2be_1
 258 #define H2BE_2 endian_h2be_2
 259 #define H2BE_4 endian_h2be_4
 260 #define H2BE_8 endian_h2be_8
 261 #define BE2H_1 endian_be2h_1
 262 #define BE2H_2 endian_be2h_2
 263 #define BE2H_4 endian_be2h_4
 264 #define BE2H_8 endian_be2h_8
 265
 266
 267 /* HOST to LE */
 268
 269 #define H2LE_1 endian_h2le_1
 270 #define H2LE_2 endian_h2le_2
 271 #define H2LE_4 endian_h2le_4
 272 #define H2LE_8 endian_h2le_8
 273 #define LE2H_1 endian_le2h_1
 274 #define LE2H_2 endian_le2h_2
 275 #define LE2H_4 endian_le2h_4
 276 #define LE2H_8 endian_le2h_8
 277
 278
 279 /* HOST to TARGET */
 280
 281 #define H2T_1 endian_h2t_1
 282 #define H2T_2 endian_h2t_2
 283 #define H2T_4 endian_h2t_4
 284 #define H2T_8 endian_h2t_8
 285 #define T2H_1 endian_t2h_1
 286 #define T2H_2 endian_t2h_2
 287 #define T2H_4 endian_t2h_4
 288 #define T2H_8 endian_t2h_8
 289
 290
 291 /* CONVERT IN PLACE
 292
 293    These macros, given an argument of unknown size, swap its value in
 294    place if a host/target conversion is required. */
 295
 296 #define H2T(VARIABLE) \
 297 do { \
 298   switch (sizeof(VARIABLE)) { \
 299   case 1: VARIABLE = H2T_1(VARIABLE); break; \
 300   case 2: VARIABLE = H2T_2(VARIABLE); break; \
 301   case 4: VARIABLE = H2T_4(VARIABLE); break; \
 302   case 8: VARIABLE = H2T_8(VARIABLE); break; \
 303   } \
 304 } while (0)
 305
 306 #define T2H(VARIABLE) \
 307 do { \
 308   switch (sizeof(VARIABLE)) { \
 309   case 1: VARIABLE = T2H_1(VARIABLE); break; \
 310   case 2: VARIABLE = T2H_2(VARIABLE); break; \
 311   case 4: VARIABLE = T2H_4(VARIABLE); break; \
 312   case 8: VARIABLE = T2H_8(VARIABLE); break; \
 313   } \
 314 } while (0)
 315
 316 #define SWAP(VARIABLE) \
 317 do { \
 318   switch (sizeof(VARIABLE)) { \
 319   case 1: VARIABLE = SWAP_1(VARIABLE); break; \
 320   case 2: VARIABLE = SWAP_2(VARIABLE); break; \
 321   case 4: VARIABLE = SWAP_4(VARIABLE); break; \
 322   case 8: VARIABLE = SWAP_8(VARIABLE); break; \
 323   } \
 324 } while (0)
 325
 326 #define H2BE(VARIABLE) \
 327 do { \
 328   switch (sizeof(VARIABLE)) { \
 329   case 1: VARIABLE = H2BE_1(VARIABLE); break; \
 330   case 2: VARIABLE = H2BE_2(VARIABLE); break; \
 331   case 4: VARIABLE = H2BE_4(VARIABLE); break; \
 332   case 8: VARIABLE = H2BE_8(VARIABLE); break; \
 333   } \
 334 } while (0)
 335
 336 #define BE2H(VARIABLE) \
 337 do { \
 338   switch (sizeof(VARIABLE)) { \
 339   case 1: VARIABLE = BE2H_1(VARIABLE); break; \
 340   case 2: VARIABLE = BE2H_2(VARIABLE); break; \
 341   case 4: VARIABLE = BE2H_4(VARIABLE); break; \
 342   case 8: VARIABLE = BE2H_8(VARIABLE); break; \
 343   } \
 344 } while (0)
 345
 346 #define H2LE(VARIABLE) \
 347 do { \
 348   switch (sizeof(VARIABLE)) { \
 349   case 1: VARIABLE = H2LE_1(VARIABLE); break; \
 350   case 2: VARIABLE = H2LE_2(VARIABLE); break; \
 351   case 4: VARIABLE = H2LE_4(VARIABLE); break; \
 352   case 8: VARIABLE = H2LE_8(VARIABLE); break; \
 353   } \
 354 } while (0)
 355
 356 #define LE2H(VARIABLE) \
 357 do { \
 358   switch (sizeof(VARIABLE)) { \
 359   case 1: VARIABLE = LE2H_1(VARIABLE); break; \
 360   case 2: VARIABLE = LE2H_2(VARIABLE); break; \
 361   case 4: VARIABLE = LE2H_4(VARIABLE); break; \
 362   case 8: VARIABLE = LE2H_8(VARIABLE); break; \
 363   } \
 364 } while (0)
 365
 366
 367
 368 /* TARGET WORD:
 369
 370    Byte swap a quantity the size of the targets word */
 371
 372 #if (WITH_TARGET_WORD_BITSIZE == 64)
 373 #define H2T_word H2T_8
 374 #define T2H_word T2H_8
 375 #define H2BE_word H2BE_8
 376 #define BE2H_word BE2H_8
 377 #define H2LE_word H2LE_8
 378 #define LE2H_word LE2H_8
 379 #define SWAP_word SWAP_8
 380 #endif
 381 #if (WITH_TARGET_WORD_BITSIZE == 32)
 382 #define H2T_word H2T_4
 383 #define T2H_word T2H_4
 384 #define H2BE_word H2BE_4
 385 #define BE2H_word BE2H_4
 386 #define H2LE_word H2LE_4
 387 #define LE2H_word LE2H_4
 388 #define SWAP_word SWAP_4
 389 #endif
 390
 391
 392 /* TARGET CELL:
 393
 394    Byte swap a quantity the size of the targets IEEE 1275 memory cell */
 395
 396 #define H2T_cell H2T_4
 397 #define T2H_cell T2H_4
 398 #define H2BE_cell H2BE_4
 399 #define BE2H_cell BE2H_4
 400 #define H2LE_cell H2LE_4
 401 #define LE2H_cell LE2H_4
 402 #define SWAP_cell SWAP_4
 403
 404
 405 #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
 406 # include "sim-endian.c"
 407 #endif
 408
 409 #endif /* _SIM_ENDIAN_H_ */