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 /* Power or PowerPC running AIX */
158 #if defined(_POWER) && defined(_AIX)
159 # if (WITH_HOST_BYTE_ORDER == 0)
160 # undef WITH_HOST_BYTE_ORDER
161 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
163 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
164 # error "Power/PowerPC AIX was big endian last time I looked ..."
168 /* Solaris running PowerPC */
169 #if defined(__PPC) && defined(__sun__)
170 # if (WITH_HOST_BYTE_ORDER == 0)
171 # undef WITH_HOST_BYTE_ORDER
172 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
174 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
175 # error "Solaris on PowerPCs was little endian last time I looked ..."
180 #if defined(__hppa__)
181 # if (WITH_HOST_BYTE_ORDER == 0)
182 # undef WITH_HOST_BYTE_ORDER
183 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
185 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
186 # error "HP/PA was big endian last time I looked ..."
190 /* Big endian MIPS */
191 #if defined(__MIPSEB__)
192 # if (WITH_HOST_BYTE_ORDER == 0)
193 # undef WITH_HOST_BYTE_ORDER
194 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
196 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
197 # error "MIPSEB was big endian last time I looked ..."
201 /* Little endian MIPS */
202 #if defined(__MIPSEL__)
203 # if (WITH_HOST_BYTE_ORDER == 0)
204 # undef WITH_HOST_BYTE_ORDER
205 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
207 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
208 # error "MIPSEL was little endian last time I looked ..."
213 #if defined(__WIN32__)
214 # if (WITH_HOST_BYTE_ORDER == 0)
215 # undef WITH_HOST_BYTE_ORDER
216 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
218 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
219 # error "Windows NT was little endian last time I looked ..."
223 /* Alpha running DEC unix */
224 #if defined(__osf__) && defined(__alpha__)
225 # if (WITH_HOST_BYTE_ORDER == 0)
226 # undef WITH_HOST_BYTE_ORDER
227 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
229 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
230 # error "AXP running DEC unix was little endian last time I looked ..."
235 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
236 BIG_ENDIAN definitions available. */
240 #define SWAP_1 swap_1
241 #define SWAP_2 swap_2
242 #define SWAP_4 swap_4
243 #define SWAP_8 swap_8
248 #define H2BE_1 endian_h2be_1
249 #define H2BE_2 endian_h2be_2
250 #define H2BE_4 endian_h2be_4
251 #define H2BE_8 endian_h2be_8
252 #define BE2H_1 endian_be2h_1
253 #define BE2H_2 endian_be2h_2
254 #define BE2H_4 endian_be2h_4
255 #define BE2H_8 endian_be2h_8
260 #define H2LE_1 endian_h2le_1
261 #define H2LE_2 endian_h2le_2
262 #define H2LE_4 endian_h2le_4
263 #define H2LE_8 endian_h2le_8
264 #define LE2H_1 endian_le2h_1
265 #define LE2H_2 endian_le2h_2
266 #define LE2H_4 endian_le2h_4
267 #define LE2H_8 endian_le2h_8
272 #define H2T_1 endian_h2t_1
273 #define H2T_2 endian_h2t_2
274 #define H2T_4 endian_h2t_4
275 #define H2T_8 endian_h2t_8
276 #define T2H_1 endian_t2h_1
277 #define T2H_2 endian_t2h_2
278 #define T2H_4 endian_t2h_4
279 #define T2H_8 endian_t2h_8
284 These macros, given an argument of unknown size, swap its value in
285 place if a host/target conversion is required. */
287 #define H2T(VARIABLE) \
289 switch (sizeof(VARIABLE)) { \
290 case 1: VARIABLE = H2T_1(VARIABLE); break; \
291 case 2: VARIABLE = H2T_2(VARIABLE); break; \
292 case 4: VARIABLE = H2T_4(VARIABLE); break; \
293 case 8: VARIABLE = H2T_8(VARIABLE); break; \
297 #define T2H(VARIABLE) \
299 switch (sizeof(VARIABLE)) { \
300 case 1: VARIABLE = T2H_1(VARIABLE); break; \
301 case 2: VARIABLE = T2H_2(VARIABLE); break; \
302 case 4: VARIABLE = T2H_4(VARIABLE); break; \
303 case 8: VARIABLE = T2H_8(VARIABLE); break; \
307 #define SWAP(VARIABLE) \
309 switch (sizeof(VARIABLE)) { \
310 case 1: VARIABLE = SWAP_1(VARIABLE); break; \
311 case 2: VARIABLE = SWAP_2(VARIABLE); break; \
312 case 4: VARIABLE = SWAP_4(VARIABLE); break; \
313 case 8: VARIABLE = SWAP_8(VARIABLE); break; \
317 #define H2BE(VARIABLE) \
319 switch (sizeof(VARIABLE)) { \
320 case 1: VARIABLE = H2BE_1(VARIABLE); break; \
321 case 2: VARIABLE = H2BE_2(VARIABLE); break; \
322 case 4: VARIABLE = H2BE_4(VARIABLE); break; \
323 case 8: VARIABLE = H2BE_8(VARIABLE); break; \
327 #define BE2H(VARIABLE) \
329 switch (sizeof(VARIABLE)) { \
330 case 1: VARIABLE = BE2H_1(VARIABLE); break; \
331 case 2: VARIABLE = BE2H_2(VARIABLE); break; \
332 case 4: VARIABLE = BE2H_4(VARIABLE); break; \
333 case 8: VARIABLE = BE2H_8(VARIABLE); break; \
337 #define H2LE(VARIABLE) \
339 switch (sizeof(VARIABLE)) { \
340 case 1: VARIABLE = H2LE_1(VARIABLE); break; \
341 case 2: VARIABLE = H2LE_2(VARIABLE); break; \
342 case 4: VARIABLE = H2LE_4(VARIABLE); break; \
343 case 8: VARIABLE = H2LE_8(VARIABLE); break; \
347 #define LE2H(VARIABLE) \
349 switch (sizeof(VARIABLE)) { \
350 case 1: VARIABLE = LE2H_1(VARIABLE); break; \
351 case 2: VARIABLE = LE2H_2(VARIABLE); break; \
352 case 4: VARIABLE = LE2H_4(VARIABLE); break; \
353 case 8: VARIABLE = LE2H_8(VARIABLE); break; \
361 Byte swap a quantity the size of the targets word */
363 #if (WITH_TARGET_WORD_BITSIZE == 64)
364 #define H2T_word H2T_8
365 #define T2H_word T2H_8
366 #define H2BE_word H2BE_8
367 #define BE2H_word BE2H_8
368 #define H2LE_word H2LE_8
369 #define LE2H_word LE2H_8
370 #define SWAP_word SWAP_8
372 #if (WITH_TARGET_WORD_BITSIZE == 32)
373 #define H2T_word H2T_4
374 #define T2H_word T2H_4
375 #define H2BE_word H2BE_4
376 #define BE2H_word BE2H_4
377 #define H2LE_word H2LE_4
378 #define LE2H_word LE2H_4
379 #define SWAP_word SWAP_4
385 Byte swap a quantity the size of the targets IEEE 1275 memory cell */
387 #define H2T_cell H2T_4
388 #define T2H_cell T2H_4
389 #define H2BE_cell H2BE_4
390 #define BE2H_cell BE2H_4
391 #define H2LE_cell H2LE_4
392 #define LE2H_cell LE2H_4
393 #define SWAP_cell SWAP_4
396 #if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
397 # include "sim-endian.c"
400 #endif /* _SIM_ENDIAN_H_ */
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