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 3 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, see <http://www.gnu.org/licenses/>.
21 #ifndef _SIM_ENDIAN_H_
22 #define _SIM_ENDIAN_H_
25 /* C byte conversion functions */
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);
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);
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);
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);
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);
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);
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);
65 The CPP below defines information about the compilation host. In
66 particular it defines the macro's:
68 WITH_HOST_BYTE_ORDER The byte order of the host. Could
69 be any of LITTLE_ENDIAN, BIG_ENDIAN
70 or 0 (unknown). Those macro's also
78 NetBSD is easy, everything you could ever want is in a header file
81 #if defined(__NetBSD__)
82 # include <machine/endian.h>
83 # if (WITH_HOST_BYTE_ORDER == 0)
84 # undef WITH_HOST_BYTE_ORDER
85 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
87 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
88 # error "host endian incorrectly configured, check config.h"
92 /* Linux is similarly easy. */
94 #if defined(__linux__)
96 # if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN)
97 # define LITTLE_ENDIAN __LITTLE_ENDIAN
99 # if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN)
100 # define BIG_ENDIAN __BIG_ENDIAN
102 # if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
103 # define BYTE_ORDER __BYTE_ORDER
105 # if (WITH_HOST_BYTE_ORDER == 0)
106 # undef WITH_HOST_BYTE_ORDER
107 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
109 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
110 # error "host endian incorrectly configured, check config.h"
114 /* INSERT HERE - hosts that have available LITTLE_ENDIAN and
115 BIG_ENDIAN macro's */
118 /* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */
120 #ifndef LITTLE_ENDIAN
121 #define LITTLE_ENDIAN 1234
124 #define BIG_ENDIAN 4321
130 Big endian last time I looked */
132 #if defined(sparc) || defined(__sparc__)
133 # if (WITH_HOST_BYTE_ORDER == 0)
134 # undef WITH_HOST_BYTE_ORDER
135 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
137 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
138 # error "sun was big endian last time I looked ..."
145 Little endian last time I looked */
147 #if defined(i386) || defined(i486) || defined(i586) || defined (i686) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined (__i686__)
148 # if (WITH_HOST_BYTE_ORDER == 0)
149 # undef WITH_HOST_BYTE_ORDER
150 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
152 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
153 # error "x86 was little endian last time I looked ..."
157 #if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
160 #define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
161 #define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
164 /* Power or PowerPC running AIX */
165 #if defined(_POWER) && defined(_AIX)
166 # if (WITH_HOST_BYTE_ORDER == 0)
167 # undef WITH_HOST_BYTE_ORDER
168 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
170 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
171 # error "Power/PowerPC AIX was big endian last time I looked ..."
175 /* Solaris running PowerPC */
176 #if defined(__PPC) && defined(__sun__)
177 # if (WITH_HOST_BYTE_ORDER == 0)
178 # undef WITH_HOST_BYTE_ORDER
179 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
181 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
182 # error "Solaris on PowerPCs was little endian last time I looked ..."
187 #if defined(__hppa__)
188 # if (WITH_HOST_BYTE_ORDER == 0)
189 # undef WITH_HOST_BYTE_ORDER
190 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
192 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
193 # error "HP/PA was big endian last time I looked ..."
197 /* Big endian MIPS */
198 #if defined(__MIPSEB__)
199 # if (WITH_HOST_BYTE_ORDER == 0)
200 # undef WITH_HOST_BYTE_ORDER
201 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
203 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
204 # error "MIPSEB was big endian last time I looked ..."
208 /* Little endian MIPS */
209 #if defined(__MIPSEL__)
210 # if (WITH_HOST_BYTE_ORDER == 0)
211 # undef WITH_HOST_BYTE_ORDER
212 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
214 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
215 # error "MIPSEL was little endian last time I looked ..."
220 #if defined(__WIN32__)
221 # if (WITH_HOST_BYTE_ORDER == 0)
222 # undef WITH_HOST_BYTE_ORDER
223 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
225 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
226 # error "Windows NT was little endian last time I looked ..."
230 /* Alpha running DEC unix */
231 #if defined(__osf__) && defined(__alpha__)
232 # if (WITH_HOST_BYTE_ORDER == 0)
233 # undef WITH_HOST_BYTE_ORDER
234 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
236 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
237 # error "AXP running DEC unix was little endian last time I looked ..."
242 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
243 BIG_ENDIAN definitions available. */
247 #define SWAP_1 swap_1
248 #define SWAP_2 swap_2
249 #define SWAP_4 swap_4
250 #define SWAP_8 swap_8
255 #define H2BE_1 endian_h2be_1
256 #define H2BE_2 endian_h2be_2
257 #define H2BE_4 endian_h2be_4
258 #define H2BE_8 endian_h2be_8
259 #define BE2H_1 endian_be2h_1
260 #define BE2H_2 endian_be2h_2
261 #define BE2H_4 endian_be2h_4
262 #define BE2H_8 endian_be2h_8
267 #define H2LE_1 endian_h2le_1
268 #define H2LE_2 endian_h2le_2
269 #define H2LE_4 endian_h2le_4
270 #define H2LE_8 endian_h2le_8
271 #define LE2H_1 endian_le2h_1
272 #define LE2H_2 endian_le2h_2
273 #define LE2H_4 endian_le2h_4
274 #define LE2H_8 endian_le2h_8
279 #define H2T_1 endian_h2t_1
280 #define H2T_2 endian_h2t_2
281 #define H2T_4 endian_h2t_4
282 #define H2T_8 endian_h2t_8
283 #define T2H_1 endian_t2h_1
284 #define T2H_2 endian_t2h_2
285 #define T2H_4 endian_t2h_4
286 #define T2H_8 endian_t2h_8
291 These macros, given an argument of unknown size, swap its value in
292 place if a host/target conversion is required. */
294 #define H2T(VARIABLE) \
296 switch (sizeof(VARIABLE)) { \
297 case 1: VARIABLE = H2T_1(VARIABLE); break; \
298 case 2: VARIABLE = H2T_2(VARIABLE); break; \
299 case 4: VARIABLE = H2T_4(VARIABLE); break; \
300 case 8: VARIABLE = H2T_8(VARIABLE); break; \
304 #define T2H(VARIABLE) \
306 switch (sizeof(VARIABLE)) { \
307 case 1: VARIABLE = T2H_1(VARIABLE); break; \
308 case 2: VARIABLE = T2H_2(VARIABLE); break; \
309 case 4: VARIABLE = T2H_4(VARIABLE); break; \
310 case 8: VARIABLE = T2H_8(VARIABLE); break; \
314 #define SWAP(VARIABLE) \
316 switch (sizeof(VARIABLE)) { \
317 case 1: VARIABLE = SWAP_1(VARIABLE); break; \
318 case 2: VARIABLE = SWAP_2(VARIABLE); break; \
319 case 4: VARIABLE = SWAP_4(VARIABLE); break; \
320 case 8: VARIABLE = SWAP_8(VARIABLE); break; \
324 #define H2BE(VARIABLE) \
326 switch (sizeof(VARIABLE)) { \
327 case 1: VARIABLE = H2BE_1(VARIABLE); break; \
328 case 2: VARIABLE = H2BE_2(VARIABLE); break; \
329 case 4: VARIABLE = H2BE_4(VARIABLE); break; \
330 case 8: VARIABLE = H2BE_8(VARIABLE); break; \
334 #define BE2H(VARIABLE) \
336 switch (sizeof(VARIABLE)) { \
337 case 1: VARIABLE = BE2H_1(VARIABLE); break; \
338 case 2: VARIABLE = BE2H_2(VARIABLE); break; \
339 case 4: VARIABLE = BE2H_4(VARIABLE); break; \
340 case 8: VARIABLE = BE2H_8(VARIABLE); break; \
344 #define H2LE(VARIABLE) \
346 switch (sizeof(VARIABLE)) { \
347 case 1: VARIABLE = H2LE_1(VARIABLE); break; \
348 case 2: VARIABLE = H2LE_2(VARIABLE); break; \
349 case 4: VARIABLE = H2LE_4(VARIABLE); break; \
350 case 8: VARIABLE = H2LE_8(VARIABLE); break; \
354 #define LE2H(VARIABLE) \
356 switch (sizeof(VARIABLE)) { \
357 case 1: VARIABLE = LE2H_1(VARIABLE); break; \
358 case 2: VARIABLE = LE2H_2(VARIABLE); break; \
359 case 4: VARIABLE = LE2H_4(VARIABLE); break; \
360 case 8: VARIABLE = LE2H_8(VARIABLE); break; \
368 Byte swap a quantity the size of the targets word */
370 #if (WITH_TARGET_WORD_BITSIZE == 64)
371 #define H2T_word H2T_8
372 #define T2H_word T2H_8
373 #define H2BE_word H2BE_8
374 #define BE2H_word BE2H_8
375 #define H2LE_word H2LE_8
376 #define LE2H_word LE2H_8
377 #define SWAP_word SWAP_8
379 #if (WITH_TARGET_WORD_BITSIZE == 32)
380 #define H2T_word H2T_4
381 #define T2H_word T2H_4
382 #define H2BE_word H2BE_4
383 #define BE2H_word BE2H_4
384 #define H2LE_word H2LE_4
385 #define LE2H_word LE2H_4
386 #define SWAP_word SWAP_4
392 Byte swap a quantity the size of the targets IEEE 1275 memory cell */
394 #define H2T_cell H2T_4
395 #define T2H_cell T2H_4
396 #define H2BE_cell H2BE_4
397 #define BE2H_cell BE2H_4
398 #define H2LE_cell H2LE_4
399 #define LE2H_cell LE2H_4
400 #define SWAP_cell SWAP_4
403 #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
404 # include "sim-endian.c"
407 #endif /* _SIM_ENDIAN_H_ */