| 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(X) swap_1(X) |
| 250 | #define SWAP_2(X) swap_2(X) |
| 251 | #define SWAP_4(X) swap_4(X) |
| 252 | #define SWAP_8(X) swap_8(X) |
| 253 | |
| 254 | |
| 255 | /* HOST to BE */ |
| 256 | |
| 257 | #define H2BE_1(X) endian_h2be_1(X) |
| 258 | #define H2BE_2(X) endian_h2be_2(X) |
| 259 | #define H2BE_4(X) endian_h2be_4(X) |
| 260 | #define H2BE_8(X) endian_h2be_8(X) |
| 261 | #define BE2H_1(X) endian_be2h_1(X) |
| 262 | #define BE2H_2(X) endian_be2h_2(X) |
| 263 | #define BE2H_4(X) endian_be2h_4(X) |
| 264 | #define BE2H_8(X) endian_be2h_8(X) |
| 265 | |
| 266 | |
| 267 | /* HOST to LE */ |
| 268 | |
| 269 | #define H2LE_1(X) endian_h2le_1(X) |
| 270 | #define H2LE_2(X) endian_h2le_2(X) |
| 271 | #define H2LE_4(X) endian_h2le_4(X) |
| 272 | #define H2LE_8(X) endian_h2le_8(X) |
| 273 | #define LE2H_1(X) endian_le2h_1(X) |
| 274 | #define LE2H_2(X) endian_le2h_2(X) |
| 275 | #define LE2H_4(X) endian_le2h_4(X) |
| 276 | #define LE2H_8(X) endian_le2h_8(X) |
| 277 | |
| 278 | |
| 279 | /* HOST to TARGET */ |
| 280 | |
| 281 | #define H2T_1(X) endian_h2t_1(X) |
| 282 | #define H2T_2(X) endian_h2t_2(X) |
| 283 | #define H2T_4(X) endian_h2t_4(X) |
| 284 | #define H2T_8(X) endian_h2t_8(X) |
| 285 | #define T2H_1(X) endian_t2h_1(X) |
| 286 | #define T2H_2(X) endian_t2h_2(X) |
| 287 | #define T2H_4(X) endian_t2h_4(X) |
| 288 | #define T2H_8(X) endian_t2h_8(X) |
| 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(X) H2T_8(X) |
| 374 | #define T2H_word(X) T2H_8(X) |
| 375 | #define H2BE_word(X) H2BE_8(X) |
| 376 | #define BE2H_word(X) BE2H_8(X) |
| 377 | #define H2LE_word(X) H2LE_8(X) |
| 378 | #define LE2H_word(X) LE2H_8(X) |
| 379 | #define SWAP_word(X) SWAP_8(X) |
| 380 | #endif |
| 381 | #if (WITH_TARGET_WORD_BITSIZE == 32) |
| 382 | #define H2T_word(X) H2T_4(X) |
| 383 | #define T2H_word(X) T2H_4(X) |
| 384 | #define H2BE_word(X) H2BE_4(X) |
| 385 | #define BE2H_word(X) BE2H_4(X) |
| 386 | #define H2LE_word(X) H2LE_4(X) |
| 387 | #define LE2H_word(X) LE2H_4(X) |
| 388 | #define SWAP_word(X) SWAP_4(X) |
| 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(X) H2T_4(X) |
| 397 | #define T2H_cell(X) T2H_4(X) |
| 398 | #define H2BE_cell(X) H2BE_4(X) |
| 399 | #define BE2H_cell(X) BE2H_4(X) |
| 400 | #define H2LE_cell(X) H2LE_4(X) |
| 401 | #define LE2H_cell(X) LE2H_4(X) |
| 402 | #define SWAP_cell(X) SWAP_4(X) |
| 403 | |
| 404 | |
| 405 | #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE) |
| 406 | # include "sim-endian.c" |
| 407 | #endif |
| 408 | |
| 409 | #endif /* _SIM_ENDIAN_H_ */ |