1 /* This file is part of the program psim.
3 Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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.
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.
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.
22 #ifndef _SIM_ENDIAN_H_
23 #define _SIM_ENDIAN_H_
26 /* C byte conversion functions */
28 INLINE_PSIM_ENDIAN(unsigned_1
) endian_h2t_1(unsigned_1 x
);
29 INLINE_PSIM_ENDIAN(unsigned_2
) endian_h2t_2(unsigned_2 x
);
30 INLINE_PSIM_ENDIAN(unsigned_4
) endian_h2t_4(unsigned_4 x
);
31 INLINE_PSIM_ENDIAN(unsigned_8
) endian_h2t_8(unsigned_8 x
);
33 INLINE_PSIM_ENDIAN(unsigned_1
) endian_t2h_1(unsigned_1 x
);
34 INLINE_PSIM_ENDIAN(unsigned_2
) endian_t2h_2(unsigned_2 x
);
35 INLINE_PSIM_ENDIAN(unsigned_4
) endian_t2h_4(unsigned_4 x
);
36 INLINE_PSIM_ENDIAN(unsigned_8
) endian_t2h_8(unsigned_8 x
);
38 INLINE_PSIM_ENDIAN(unsigned_1
) swap_1(unsigned_1 x
);
39 INLINE_PSIM_ENDIAN(unsigned_2
) swap_2(unsigned_2 x
);
40 INLINE_PSIM_ENDIAN(unsigned_4
) swap_4(unsigned_4 x
);
41 INLINE_PSIM_ENDIAN(unsigned_8
) swap_8(unsigned_8 x
);
43 INLINE_PSIM_ENDIAN(unsigned_1
) endian_h2be_1(unsigned_1 x
);
44 INLINE_PSIM_ENDIAN(unsigned_2
) endian_h2be_2(unsigned_2 x
);
45 INLINE_PSIM_ENDIAN(unsigned_4
) endian_h2be_4(unsigned_4 x
);
46 INLINE_PSIM_ENDIAN(unsigned_8
) endian_h2be_8(unsigned_8 x
);
48 INLINE_PSIM_ENDIAN(unsigned_1
) endian_be2h_1(unsigned_1 x
);
49 INLINE_PSIM_ENDIAN(unsigned_2
) endian_be2h_2(unsigned_2 x
);
50 INLINE_PSIM_ENDIAN(unsigned_4
) endian_be2h_4(unsigned_4 x
);
51 INLINE_PSIM_ENDIAN(unsigned_8
) endian_be2h_8(unsigned_8 x
);
53 INLINE_PSIM_ENDIAN(unsigned_1
) endian_h2le_1(unsigned_1 x
);
54 INLINE_PSIM_ENDIAN(unsigned_2
) endian_h2le_2(unsigned_2 x
);
55 INLINE_PSIM_ENDIAN(unsigned_4
) endian_h2le_4(unsigned_4 x
);
56 INLINE_PSIM_ENDIAN(unsigned_8
) endian_h2le_8(unsigned_8 x
);
58 INLINE_PSIM_ENDIAN(unsigned_1
) endian_le2h_1(unsigned_1 x
);
59 INLINE_PSIM_ENDIAN(unsigned_2
) endian_le2h_2(unsigned_2 x
);
60 INLINE_PSIM_ENDIAN(unsigned_4
) endian_le2h_4(unsigned_4 x
);
61 INLINE_PSIM_ENDIAN(unsigned_8
) endian_le2h_8(unsigned_8 x
);
66 The CPP below defines information about the compilation host. In
67 particular it defines the macro's:
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
79 NetBSD is easy, everything you could ever want is in a header file
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
88 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
89 # error "host endian incorrectly configured, check config.h"
93 /* Linux is similarly easy. */
95 #if defined(__linux__)
97 # if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN)
98 # define LITTLE_ENDIAN __LITTLE_ENDIAN
100 # if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN)
101 # define BIG_ENDIAN __BIG_ENDIAN
103 # if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
104 # define BYTE_ORDER __BYTE_ORDER
106 # if (WITH_HOST_BYTE_ORDER == 0)
107 # undef WITH_HOST_BYTE_ORDER
108 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
110 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
111 # error "host endian incorrectly configured, check config.h"
115 /* INSERT HERE - hosts that have available LITTLE_ENDIAN and
116 BIG_ENDIAN macro's */
119 /* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */
121 #ifndef LITTLE_ENDIAN
122 #define LITTLE_ENDIAN 1234
125 #define BIG_ENDIAN 4321
131 Big endian last time I looked */
133 #if defined(sparc) || defined(__sparc__)
134 # if (WITH_HOST_BYTE_ORDER == 0)
135 # undef WITH_HOST_BYTE_ORDER
136 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
138 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
139 # error "sun was big endian last time I looked ..."
146 Little endian last time I looked */
148 #if defined(i386) || defined(i486) || defined(i586) || defined (i686) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined (__i686__)
149 # if (WITH_HOST_BYTE_ORDER == 0)
150 # undef WITH_HOST_BYTE_ORDER
151 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
153 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
154 # error "x86 was little endian last time I looked ..."
158 #if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
161 #define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
162 #define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
165 /* Power or PowerPC running AIX */
166 #if defined(_POWER) && defined(_AIX)
167 # if (WITH_HOST_BYTE_ORDER == 0)
168 # undef WITH_HOST_BYTE_ORDER
169 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
171 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
172 # error "Power/PowerPC AIX was big endian last time I looked ..."
176 /* Solaris running PowerPC */
177 #if defined(__PPC) && defined(__sun__)
178 # if (WITH_HOST_BYTE_ORDER == 0)
179 # undef WITH_HOST_BYTE_ORDER
180 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
182 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
183 # error "Solaris on PowerPCs was little endian last time I looked ..."
188 #if defined(__hppa__)
189 # if (WITH_HOST_BYTE_ORDER == 0)
190 # undef WITH_HOST_BYTE_ORDER
191 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
193 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
194 # error "HP/PA was big endian last time I looked ..."
198 /* Big endian MIPS */
199 #if defined(__MIPSEB__)
200 # if (WITH_HOST_BYTE_ORDER == 0)
201 # undef WITH_HOST_BYTE_ORDER
202 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
204 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
205 # error "MIPSEB was big endian last time I looked ..."
209 /* Little endian MIPS */
210 #if defined(__MIPSEL__)
211 # if (WITH_HOST_BYTE_ORDER == 0)
212 # undef WITH_HOST_BYTE_ORDER
213 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
215 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
216 # error "MIPSEL was little endian last time I looked ..."
221 #if defined(__WIN32__)
222 # if (WITH_HOST_BYTE_ORDER == 0)
223 # undef WITH_HOST_BYTE_ORDER
224 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
226 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
227 # error "Windows NT was little endian last time I looked ..."
231 /* Alpha running DEC unix */
232 #if defined(__osf__) && defined(__alpha__)
233 # if (WITH_HOST_BYTE_ORDER == 0)
234 # undef WITH_HOST_BYTE_ORDER
235 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
237 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
238 # error "AXP running DEC unix was little endian last time I looked ..."
243 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
244 BIG_ENDIAN definitions available. */
248 #define SWAP_1 swap_1
249 #define SWAP_2 swap_2
250 #define SWAP_4 swap_4
251 #define SWAP_8 swap_8
256 #define H2BE_1 endian_h2be_1
257 #define H2BE_2 endian_h2be_2
258 #define H2BE_4 endian_h2be_4
259 #define H2BE_8 endian_h2be_8
260 #define BE2H_1 endian_be2h_1
261 #define BE2H_2 endian_be2h_2
262 #define BE2H_4 endian_be2h_4
263 #define BE2H_8 endian_be2h_8
268 #define H2LE_1 endian_h2le_1
269 #define H2LE_2 endian_h2le_2
270 #define H2LE_4 endian_h2le_4
271 #define H2LE_8 endian_h2le_8
272 #define LE2H_1 endian_le2h_1
273 #define LE2H_2 endian_le2h_2
274 #define LE2H_4 endian_le2h_4
275 #define LE2H_8 endian_le2h_8
280 #define H2T_1 endian_h2t_1
281 #define H2T_2 endian_h2t_2
282 #define H2T_4 endian_h2t_4
283 #define H2T_8 endian_h2t_8
284 #define T2H_1 endian_t2h_1
285 #define T2H_2 endian_t2h_2
286 #define T2H_4 endian_t2h_4
287 #define T2H_8 endian_t2h_8
292 These macros, given an argument of unknown size, swap its value in
293 place if a host/target conversion is required. */
295 #define H2T(VARIABLE) \
297 switch (sizeof(VARIABLE)) { \
298 case 1: VARIABLE = H2T_1(VARIABLE); break; \
299 case 2: VARIABLE = H2T_2(VARIABLE); break; \
300 case 4: VARIABLE = H2T_4(VARIABLE); break; \
301 case 8: VARIABLE = H2T_8(VARIABLE); break; \
305 #define T2H(VARIABLE) \
307 switch (sizeof(VARIABLE)) { \
308 case 1: VARIABLE = T2H_1(VARIABLE); break; \
309 case 2: VARIABLE = T2H_2(VARIABLE); break; \
310 case 4: VARIABLE = T2H_4(VARIABLE); break; \
311 case 8: VARIABLE = T2H_8(VARIABLE); break; \
315 #define SWAP(VARIABLE) \
317 switch (sizeof(VARIABLE)) { \
318 case 1: VARIABLE = SWAP_1(VARIABLE); break; \
319 case 2: VARIABLE = SWAP_2(VARIABLE); break; \
320 case 4: VARIABLE = SWAP_4(VARIABLE); break; \
321 case 8: VARIABLE = SWAP_8(VARIABLE); break; \
325 #define H2BE(VARIABLE) \
327 switch (sizeof(VARIABLE)) { \
328 case 1: VARIABLE = H2BE_1(VARIABLE); break; \
329 case 2: VARIABLE = H2BE_2(VARIABLE); break; \
330 case 4: VARIABLE = H2BE_4(VARIABLE); break; \
331 case 8: VARIABLE = H2BE_8(VARIABLE); break; \
335 #define BE2H(VARIABLE) \
337 switch (sizeof(VARIABLE)) { \
338 case 1: VARIABLE = BE2H_1(VARIABLE); break; \
339 case 2: VARIABLE = BE2H_2(VARIABLE); break; \
340 case 4: VARIABLE = BE2H_4(VARIABLE); break; \
341 case 8: VARIABLE = BE2H_8(VARIABLE); break; \
345 #define H2LE(VARIABLE) \
347 switch (sizeof(VARIABLE)) { \
348 case 1: VARIABLE = H2LE_1(VARIABLE); break; \
349 case 2: VARIABLE = H2LE_2(VARIABLE); break; \
350 case 4: VARIABLE = H2LE_4(VARIABLE); break; \
351 case 8: VARIABLE = H2LE_8(VARIABLE); break; \
355 #define LE2H(VARIABLE) \
357 switch (sizeof(VARIABLE)) { \
358 case 1: VARIABLE = LE2H_1(VARIABLE); break; \
359 case 2: VARIABLE = LE2H_2(VARIABLE); break; \
360 case 4: VARIABLE = LE2H_4(VARIABLE); break; \
361 case 8: VARIABLE = LE2H_8(VARIABLE); break; \
369 Byte swap a quantity the size of the targets word */
371 #if (WITH_TARGET_WORD_BITSIZE == 64)
372 #define H2T_word H2T_8
373 #define T2H_word T2H_8
374 #define H2BE_word H2BE_8
375 #define BE2H_word BE2H_8
376 #define H2LE_word H2LE_8
377 #define LE2H_word LE2H_8
378 #define SWAP_word SWAP_8
380 #if (WITH_TARGET_WORD_BITSIZE == 32)
381 #define H2T_word H2T_4
382 #define T2H_word T2H_4
383 #define H2BE_word H2BE_4
384 #define BE2H_word BE2H_4
385 #define H2LE_word H2LE_4
386 #define LE2H_word LE2H_4
387 #define SWAP_word SWAP_4
393 Byte swap a quantity the size of the targets IEEE 1275 memory cell */
395 #define H2T_cell H2T_4
396 #define T2H_cell T2H_4
397 #define H2BE_cell H2BE_4
398 #define BE2H_cell BE2H_4
399 #define H2LE_cell H2LE_4
400 #define LE2H_cell LE2H_4
401 #define SWAP_cell SWAP_4
404 #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
405 # include "sim-endian.c"
408 #endif /* _SIM_ENDIAN_H_ */
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