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 # include <asm/byteorder.h>
98 # if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN)
99 # define LITTLE_ENDIAN __LITTLE_ENDIAN
101 # if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN)
102 # define BIG_ENDIAN __BIG_ENDIAN
104 # if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
105 # define BYTE_ORDER __BYTE_ORDER
107 # if (WITH_HOST_BYTE_ORDER == 0)
108 # undef WITH_HOST_BYTE_ORDER
109 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
111 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
112 # error "host endian incorrectly configured, check config.h"
116 /* INSERT HERE - hosts that have available LITTLE_ENDIAN and
117 BIG_ENDIAN macro's */
120 /* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */
122 #ifndef LITTLE_ENDIAN
123 #define LITTLE_ENDIAN 1234
126 #define BIG_ENDIAN 4321
132 Big endian last time I looked */
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
139 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
140 # error "sun was big endian last time I looked ..."
147 Little endian last time I looked */
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
154 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
155 # error "x86 was little endian last time I looked ..."
159 #if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
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; })
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
172 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
173 # error "Power/PowerPC AIX was big endian last time I looked ..."
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
183 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
184 # error "Solaris on PowerPCs was little endian last time I looked ..."
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
194 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
195 # error "HP/PA was big endian last time I looked ..."
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
205 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
206 # error "MIPSEB was big endian last time I looked ..."
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
216 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
217 # error "MIPSEL was little endian last time I looked ..."
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
227 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
228 # error "Windows NT was little endian last time I looked ..."
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
238 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
239 # error "AXP running DEC unix was little endian last time I looked ..."
244 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
245 BIG_ENDIAN definitions available. */
249 #define SWAP_1 swap_1
250 #define SWAP_2 swap_2
251 #define SWAP_4 swap_4
252 #define SWAP_8 swap_8
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
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
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
293 These macros, given an argument of unknown size, swap its value in
294 place if a host/target conversion is required. */
296 #define H2T(VARIABLE) \
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; \
306 #define T2H(VARIABLE) \
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; \
316 #define SWAP(VARIABLE) \
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; \
326 #define H2BE(VARIABLE) \
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; \
336 #define BE2H(VARIABLE) \
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; \
346 #define H2LE(VARIABLE) \
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; \
356 #define LE2H(VARIABLE) \
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; \
370 Byte swap a quantity the size of the targets word */
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
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
394 Byte swap a quantity the size of the targets IEEE 1275 memory cell */
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
405 #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
406 # include "sim-endian.c"
409 #endif /* _SIM_ENDIAN_H_ */
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