Commit | Line | Data |
---|---|---|
f2de7dfd AC |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1997, 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_CORE_C_ | |
23 | #define _SIM_CORE_C_ | |
24 | ||
c967f187 DE |
25 | #include "sim-main.h" |
26 | #include "sim-assert.h" | |
f2de7dfd AC |
27 | |
28 | ||
c967f187 | 29 | /* "core" module install handler. |
cd0d873d | 30 | |
c967f187 DE |
31 | This is called via sim_module_install to install the "core" subsystem |
32 | into the simulator. */ | |
33 | ||
cd0d873d AC |
34 | static MODULE_INIT_FN sim_core_init; |
35 | static MODULE_UNINSTALL_FN sim_core_uninstall; | |
36 | ||
c967f187 DE |
37 | EXTERN_SIM_CORE\ |
38 | (SIM_RC) | |
39 | sim_core_install (SIM_DESC sd) | |
40 | { | |
50a2a691 | 41 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
c967f187 DE |
42 | sim_module_add_uninstall_fn (sd, sim_core_uninstall); |
43 | sim_module_add_init_fn (sd, sim_core_init); | |
44 | return SIM_RC_OK; | |
45 | } | |
46 | ||
47 | ||
48 | /* Uninstall the "core" subsystem from the simulator. */ | |
49 | ||
cd0d873d | 50 | STATIC_SIM_CORE\ |
f2de7dfd | 51 | (void) |
c967f187 DE |
52 | sim_core_uninstall (SIM_DESC sd) |
53 | { | |
54 | /* FIXME: free buffers, etc. */ | |
55 | } | |
56 | ||
57 | ||
cd0d873d | 58 | STATIC_SIM_CORE\ |
c967f187 DE |
59 | (SIM_RC) |
60 | sim_core_init (SIM_DESC sd) | |
f2de7dfd | 61 | { |
f90b720b | 62 | sim_core *core = STATE_CORE(sd); |
c967f187 | 63 | sim_core_maps map; |
f90b720b | 64 | for (map = 0; map < nr_sim_core_maps; map++) { |
f2de7dfd | 65 | /* blow away old mappings */ |
f90b720b | 66 | sim_core_mapping *curr = core->common.map[map].first; |
f2de7dfd | 67 | while (curr != NULL) { |
c967f187 | 68 | sim_core_mapping *tbd = curr; |
f2de7dfd AC |
69 | curr = curr->next; |
70 | if (tbd->free_buffer) { | |
c967f187 | 71 | SIM_ASSERT(tbd->buffer != NULL); |
f2de7dfd AC |
72 | zfree(tbd->buffer); |
73 | } | |
74 | zfree(tbd); | |
75 | } | |
f90b720b AC |
76 | core->common.map[map].first = NULL; |
77 | } | |
78 | core->byte_xor = 0; | |
79 | /* Just copy this map to each of the processor specific data structures. | |
80 | FIXME - later this will be replaced by true processor specific | |
81 | maps. */ | |
82 | { | |
83 | int i; | |
84 | for (i = 0; i < MAX_NR_PROCESSORS; i++) | |
85 | { | |
86 | int j; | |
87 | CPU_CORE (STATE_CPU (sd, i))->common = STATE_CORE (sd)->common; | |
88 | for (j = 0; j < WITH_XOR_ENDIAN; j++) | |
89 | CPU_CORE (STATE_CPU (sd, i))->xor [j] = 0; | |
90 | } | |
f2de7dfd | 91 | } |
c967f187 | 92 | return SIM_RC_OK; |
f2de7dfd AC |
93 | } |
94 | ||
95 | ||
96 | ||
50a2a691 AC |
97 | #ifndef SIM_CORE_SIGNAL |
98 | #define SIM_CORE_SIGNAL(SD,CPU,CIA,MAP,NR_BYTES,ADDR,TRANSFER,ERROR) \ | |
99 | sim_core_signal ((SD), (CPU), (CIA), (MAP), (NR_BYTES), (ADDR), (TRANSFER), (ERROR)) | |
100 | ||
cd0d873d AC |
101 | STATIC_SIM_CORE\ |
102 | (void) | |
50a2a691 AC |
103 | sim_core_signal (SIM_DESC sd, |
104 | sim_cpu *cpu, | |
105 | sim_cia cia, | |
106 | sim_core_maps map, | |
107 | int nr_bytes, | |
108 | address_word addr, | |
109 | transfer_type transfer, | |
110 | sim_core_signals sig) | |
111 | { | |
112 | const char *copy = (transfer == read_transfer ? "read" : "write"); | |
113 | switch (sig) | |
114 | { | |
115 | case sim_core_unmapped_signal: | |
116 | sim_engine_abort (sd, cpu, cia, "sim-core: %d byte %s to unmaped address 0x%lx", | |
117 | nr_bytes, copy, (unsigned long) addr); | |
118 | break; | |
119 | case sim_core_unaligned_signal: | |
120 | sim_engine_abort (sd, cpu, cia, "sim-core: %d byte misaligned %s to address 0x%lx", | |
121 | nr_bytes, copy, (unsigned long) addr); | |
122 | break; | |
123 | default: | |
124 | sim_engine_abort (sd, cpu, cia, "sim_core_signal - internal error - bad switch"); | |
125 | } | |
126 | } | |
50a2a691 AC |
127 | #endif |
128 | ||
cd0d873d | 129 | |
1fe05280 AC |
130 | STATIC_INLINE_SIM_CORE\ |
131 | (const char *) | |
132 | sim_core_map_to_str (sim_core_maps map) | |
133 | { | |
134 | switch (map) | |
135 | { | |
136 | case sim_core_read_map: return "read"; | |
137 | case sim_core_write_map: return "write"; | |
138 | case sim_core_execute_map: return "exec"; | |
139 | default: return "(invalid-map)"; | |
140 | } | |
141 | } | |
142 | ||
143 | ||
cd0d873d | 144 | STATIC_SIM_CORE\ |
c967f187 DE |
145 | (sim_core_mapping *) |
146 | new_sim_core_mapping(SIM_DESC sd, | |
50a2a691 AC |
147 | attach_type attach, |
148 | int space, | |
cd0d873d | 149 | address_word addr, |
50a2a691 AC |
150 | unsigned nr_bytes, |
151 | device *device, | |
152 | void *buffer, | |
153 | int free_buffer) | |
f2de7dfd | 154 | { |
c967f187 | 155 | sim_core_mapping *new_mapping = ZALLOC(sim_core_mapping); |
f2de7dfd AC |
156 | /* common */ |
157 | new_mapping->level = attach; | |
158 | new_mapping->space = space; | |
159 | new_mapping->base = addr; | |
160 | new_mapping->nr_bytes = nr_bytes; | |
161 | new_mapping->bound = addr + (nr_bytes - 1); | |
162 | if (attach == attach_raw_memory) { | |
163 | new_mapping->buffer = buffer; | |
164 | new_mapping->free_buffer = free_buffer; | |
165 | } | |
166 | else if (attach >= attach_callback) { | |
167 | new_mapping->device = device; | |
168 | } | |
169 | else { | |
c967f187 | 170 | sim_io_error (sd, "new_sim_core_mapping - internal error - unknown attach type %d\n", |
f2de7dfd AC |
171 | attach); |
172 | } | |
173 | return new_mapping; | |
174 | } | |
175 | ||
176 | ||
cd0d873d | 177 | STATIC_SIM_CORE\ |
f2de7dfd | 178 | (void) |
c967f187 | 179 | sim_core_map_attach(SIM_DESC sd, |
7a418800 AC |
180 | sim_core_map *access_map, |
181 | attach_type attach, | |
182 | int space, | |
cd0d873d | 183 | address_word addr, |
7a418800 AC |
184 | unsigned nr_bytes, /* host limited */ |
185 | device *client, /*callback/default*/ | |
186 | void *buffer, /*raw_memory*/ | |
187 | int free_buffer) /*raw_memory*/ | |
f2de7dfd AC |
188 | { |
189 | /* find the insertion point for this additional mapping and then | |
190 | insert */ | |
c967f187 DE |
191 | sim_core_mapping *next_mapping; |
192 | sim_core_mapping **last_mapping; | |
f2de7dfd | 193 | |
c967f187 | 194 | SIM_ASSERT((attach >= attach_callback && client != NULL && buffer == NULL && !free_buffer) |
f2de7dfd AC |
195 | || (attach == attach_raw_memory && client == NULL && buffer != NULL)); |
196 | ||
197 | /* actually do occasionally get a zero size map */ | |
198 | if (nr_bytes == 0) { | |
199 | #if (WITH_DEVICES) | |
c967f187 | 200 | device_error(client, "called on sim_core_map_attach with size zero"); |
f2de7dfd | 201 | #else |
c967f187 | 202 | sim_io_error (sd, "called on sim_core_map_attach with size zero"); |
f2de7dfd AC |
203 | #endif |
204 | } | |
205 | ||
206 | /* find the insertion point (between last/next) */ | |
207 | next_mapping = access_map->first; | |
208 | last_mapping = &access_map->first; | |
209 | while(next_mapping != NULL | |
f90b720b AC |
210 | && (next_mapping->level < (int) attach |
211 | || (next_mapping->level == (int) attach | |
f2de7dfd AC |
212 | && next_mapping->bound < addr))) { |
213 | /* provided levels are the same */ | |
214 | /* assert: next_mapping->base > all bases before next_mapping */ | |
215 | /* assert: next_mapping->bound >= all bounds before next_mapping */ | |
216 | last_mapping = &next_mapping->next; | |
217 | next_mapping = next_mapping->next; | |
218 | } | |
219 | ||
220 | /* check insertion point correct */ | |
f90b720b AC |
221 | SIM_ASSERT (next_mapping == NULL || next_mapping->level >= (int) attach); |
222 | if (next_mapping != NULL && next_mapping->level == (int) attach | |
f2de7dfd AC |
223 | && next_mapping->base < (addr + (nr_bytes - 1))) { |
224 | #if (WITH_DEVICES) | |
225 | device_error(client, "map overlap when attaching %d:0x%lx (%ld)", | |
226 | space, (long)addr, (long)nr_bytes); | |
227 | #else | |
c967f187 | 228 | sim_io_error (sd, "map overlap when attaching %d:0x%lx (%ld)", |
f2de7dfd AC |
229 | space, (long)addr, (long)nr_bytes); |
230 | #endif | |
231 | } | |
232 | ||
233 | /* create/insert the new mapping */ | |
c967f187 | 234 | *last_mapping = new_sim_core_mapping(sd, |
f2de7dfd AC |
235 | attach, |
236 | space, addr, nr_bytes, | |
237 | client, buffer, free_buffer); | |
238 | (*last_mapping)->next = next_mapping; | |
239 | } | |
240 | ||
241 | ||
cd0d873d | 242 | EXTERN_SIM_CORE\ |
f2de7dfd | 243 | (void) |
c967f187 | 244 | sim_core_attach(SIM_DESC sd, |
7a418800 AC |
245 | sim_cpu *cpu, |
246 | attach_type attach, | |
247 | access_type access, | |
248 | int space, | |
cd0d873d | 249 | address_word addr, |
7a418800 AC |
250 | unsigned nr_bytes, /* host limited */ |
251 | device *client, | |
252 | void *optional_buffer) | |
f2de7dfd | 253 | { |
1fe05280 | 254 | sim_core *memory = STATE_CORE(sd); |
c967f187 | 255 | sim_core_maps map; |
f2de7dfd AC |
256 | void *buffer; |
257 | int buffer_freed; | |
7a418800 AC |
258 | |
259 | /* check for for attempt to use unimplemented per-processor core map */ | |
260 | if (cpu != NULL) | |
261 | sim_io_error (sd, "sim_core_map_attach - processor specific memory map not yet supported"); | |
262 | ||
f2de7dfd AC |
263 | if ((access & access_read_write_exec) == 0 |
264 | || (access & ~access_read_write_exec) != 0) { | |
265 | #if (WITH_DEVICES) | |
266 | device_error(client, "invalid access for core attach"); | |
267 | #else | |
c967f187 | 268 | sim_io_error (sd, "invalid access for core attach"); |
f2de7dfd AC |
269 | #endif |
270 | } | |
271 | /* verify the attach type */ | |
272 | if (attach == attach_raw_memory) { | |
273 | if (optional_buffer == NULL) { | |
274 | buffer = zalloc(nr_bytes); | |
275 | buffer_freed = 0; | |
276 | } | |
277 | else { | |
278 | buffer = optional_buffer; | |
279 | buffer_freed = 1; | |
280 | } | |
281 | } | |
282 | else if (attach >= attach_callback) { | |
283 | buffer = NULL; | |
284 | buffer_freed = 1; | |
285 | } | |
286 | else { | |
287 | #if (WITH_DEVICES) | |
c967f187 | 288 | device_error(client, "sim_core_attach - conflicting buffer and attach arguments"); |
f2de7dfd | 289 | #else |
c967f187 | 290 | sim_io_error (sd, "sim_core_attach - conflicting buffer and attach arguments"); |
f2de7dfd AC |
291 | #endif |
292 | buffer = NULL; | |
293 | buffer_freed = 1; | |
294 | } | |
295 | /* attach the region to all applicable access maps */ | |
296 | for (map = 0; | |
c967f187 | 297 | map < nr_sim_core_maps; |
f2de7dfd AC |
298 | map++) { |
299 | switch (map) { | |
c967f187 | 300 | case sim_core_read_map: |
f2de7dfd | 301 | if (access & access_read) |
f90b720b AC |
302 | sim_core_map_attach(sd, &memory->common.map[map], |
303 | attach, | |
304 | space, addr, nr_bytes, | |
305 | client, buffer, !buffer_freed); | |
f2de7dfd AC |
306 | buffer_freed ++; |
307 | break; | |
c967f187 | 308 | case sim_core_write_map: |
f2de7dfd | 309 | if (access & access_write) |
f90b720b | 310 | sim_core_map_attach(sd, &memory->common.map[map], |
f2de7dfd AC |
311 | attach, |
312 | space, addr, nr_bytes, | |
313 | client, buffer, !buffer_freed); | |
314 | buffer_freed ++; | |
315 | break; | |
c967f187 | 316 | case sim_core_execute_map: |
f2de7dfd | 317 | if (access & access_exec) |
f90b720b | 318 | sim_core_map_attach(sd, &memory->common.map[map], |
f2de7dfd AC |
319 | attach, |
320 | space, addr, nr_bytes, | |
321 | client, buffer, !buffer_freed); | |
322 | buffer_freed ++; | |
323 | break; | |
c967f187 DE |
324 | case nr_sim_core_maps: |
325 | sim_io_error (sd, "sim_core_attach - internal error - bad switch"); | |
f2de7dfd AC |
326 | break; |
327 | } | |
328 | } | |
7a418800 AC |
329 | |
330 | /* Just copy this map to each of the processor specific data structures. | |
331 | FIXME - later this will be replaced by true processor specific | |
332 | maps. */ | |
f90b720b AC |
333 | { |
334 | int i; | |
335 | for (i = 0; i < MAX_NR_PROCESSORS; i++) | |
336 | { | |
337 | CPU_CORE (STATE_CPU (sd, i))->common = STATE_CORE (sd)->common; | |
338 | } | |
339 | } | |
f2de7dfd AC |
340 | } |
341 | ||
342 | ||
343 | STATIC_INLINE_SIM_CORE\ | |
c967f187 | 344 | (sim_core_mapping *) |
f90b720b | 345 | sim_core_find_mapping(sim_core_common *core, |
c967f187 | 346 | sim_core_maps map, |
cd0d873d | 347 | address_word addr, |
f2de7dfd | 348 | unsigned nr_bytes, |
50a2a691 | 349 | transfer_type transfer, |
7a418800 AC |
350 | int abort, /*either 0 or 1 - hint to inline/-O */ |
351 | sim_cpu *cpu, /* abort => cpu != NULL */ | |
1fe05280 | 352 | sim_cia cia) |
f2de7dfd | 353 | { |
7a418800 AC |
354 | sim_core_mapping *mapping = core->map[map].first; |
355 | ASSERT ((addr & (nr_bytes - 1)) == 0); /* must be aligned */ | |
356 | ASSERT ((addr + (nr_bytes - 1)) >= addr); /* must not wrap */ | |
357 | ASSERT (!abort || cpu != NULL); /* abort needs a non null CPU */ | |
358 | while (mapping != NULL) | |
359 | { | |
360 | if (addr >= mapping->base | |
361 | && (addr + (nr_bytes - 1)) <= mapping->bound) | |
362 | return mapping; | |
363 | mapping = mapping->next; | |
364 | } | |
f2de7dfd | 365 | if (abort) |
7a418800 | 366 | { |
50a2a691 AC |
367 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, nr_bytes, addr, transfer, |
368 | sim_core_unmapped_signal); | |
7a418800 | 369 | } |
f2de7dfd AC |
370 | return NULL; |
371 | } | |
372 | ||
373 | ||
374 | STATIC_INLINE_SIM_CORE\ | |
375 | (void *) | |
f90b720b AC |
376 | sim_core_translate (sim_core_mapping *mapping, |
377 | address_word addr) | |
f2de7dfd AC |
378 | { |
379 | return (void *)(((char *)mapping->buffer) + addr - mapping->base); | |
380 | } | |
381 | ||
382 | ||
cd0d873d | 383 | EXTERN_SIM_CORE\ |
f2de7dfd | 384 | (unsigned) |
f90b720b AC |
385 | sim_core_read_buffer (SIM_DESC sd, |
386 | sim_cpu *cpu, | |
387 | sim_core_maps map, | |
388 | void *buffer, | |
389 | address_word addr, | |
390 | unsigned len) | |
f2de7dfd | 391 | { |
f90b720b | 392 | sim_core_common *core = (cpu == NULL ? &STATE_CORE (sd)->common : &CPU_CORE (cpu)->common); |
f2de7dfd AC |
393 | unsigned count = 0; |
394 | while (count < len) { | |
395 | unsigned_word raddr = addr + count; | |
c967f187 | 396 | sim_core_mapping *mapping = |
f90b720b | 397 | sim_core_find_mapping(core, map, |
50a2a691 AC |
398 | raddr, /*nr-bytes*/1, |
399 | read_transfer, | |
f90b720b | 400 | 0 /*dont-abort*/, NULL, NULL_CIA); |
f2de7dfd AC |
401 | if (mapping == NULL) |
402 | break; | |
403 | #if (WITH_DEVICES) | |
404 | if (mapping->device != NULL) { | |
405 | int nr_bytes = len - count; | |
406 | if (raddr + nr_bytes - 1> mapping->bound) | |
407 | nr_bytes = mapping->bound - raddr + 1; | |
408 | if (device_io_read_buffer(mapping->device, | |
409 | (unsigned_1*)buffer + count, | |
410 | mapping->space, | |
411 | raddr, | |
412 | nr_bytes) != nr_bytes) | |
413 | break; | |
414 | count += nr_bytes; | |
415 | } | |
416 | else | |
417 | #endif | |
418 | { | |
419 | ((unsigned_1*)buffer)[count] = | |
c967f187 | 420 | *(unsigned_1*)sim_core_translate(mapping, raddr); |
f2de7dfd AC |
421 | count += 1; |
422 | } | |
423 | } | |
424 | return count; | |
425 | } | |
426 | ||
427 | ||
cd0d873d | 428 | EXTERN_SIM_CORE\ |
f2de7dfd | 429 | (unsigned) |
f90b720b AC |
430 | sim_core_write_buffer (SIM_DESC sd, |
431 | sim_cpu *cpu, | |
432 | sim_core_maps map, | |
433 | const void *buffer, | |
434 | address_word addr, | |
435 | unsigned len) | |
f2de7dfd | 436 | { |
f90b720b | 437 | sim_core_common *core = (cpu == NULL ? &STATE_CORE (sd)->common : &CPU_CORE (cpu)->common); |
f2de7dfd AC |
438 | unsigned count = 0; |
439 | while (count < len) { | |
440 | unsigned_word raddr = addr + count; | |
f90b720b AC |
441 | sim_core_mapping *mapping = |
442 | sim_core_find_mapping(core, map, | |
443 | raddr, /*nr-bytes*/1, | |
444 | write_transfer, | |
445 | 0 /*dont-abort*/, NULL, NULL_CIA); | |
f2de7dfd AC |
446 | if (mapping == NULL) |
447 | break; | |
448 | #if (WITH_DEVICES) | |
449 | if (WITH_CALLBACK_MEMORY | |
450 | && mapping->device != NULL) { | |
451 | int nr_bytes = len - count; | |
452 | if (raddr + nr_bytes - 1 > mapping->bound) | |
453 | nr_bytes = mapping->bound - raddr + 1; | |
454 | if (device_io_write_buffer(mapping->device, | |
455 | (unsigned_1*)buffer + count, | |
456 | mapping->space, | |
457 | raddr, | |
458 | nr_bytes) != nr_bytes) | |
459 | break; | |
460 | count += nr_bytes; | |
461 | } | |
462 | else | |
463 | #endif | |
464 | { | |
c967f187 | 465 | *(unsigned_1*)sim_core_translate(mapping, raddr) = |
f2de7dfd AC |
466 | ((unsigned_1*)buffer)[count]; |
467 | count += 1; | |
468 | } | |
469 | } | |
470 | return count; | |
471 | } | |
472 | ||
473 | ||
cd0d873d AC |
474 | EXTERN_SIM_CORE\ |
475 | (void) | |
f90b720b AC |
476 | sim_core_set_xor (SIM_DESC sd, |
477 | sim_cpu *cpu, | |
cd0d873d AC |
478 | int is_xor) |
479 | { | |
f90b720b | 480 | /* set up the XOR map if required. */ |
cd0d873d AC |
481 | if (WITH_XOR_ENDIAN) { |
482 | { | |
f90b720b AC |
483 | sim_core *core = STATE_CORE (sd); |
484 | sim_cpu_core *cpu_core = (cpu != NULL ? CPU_CORE (cpu) : NULL); | |
485 | if (cpu_core != NULL) | |
cd0d873d | 486 | { |
f90b720b AC |
487 | int i = 1; |
488 | unsigned mask; | |
489 | if (is_xor) | |
490 | mask = WITH_XOR_ENDIAN - 1; | |
491 | else | |
492 | mask = 0; | |
493 | while (i - 1 < WITH_XOR_ENDIAN) | |
494 | { | |
495 | cpu_core->xor[i-1] = mask; | |
496 | mask = (mask << 1) & (WITH_XOR_ENDIAN - 1); | |
497 | i = (i << 1); | |
498 | } | |
cd0d873d | 499 | } |
f90b720b AC |
500 | else |
501 | { | |
502 | if (is_xor) | |
503 | core->byte_xor = WITH_XOR_ENDIAN - 1; | |
504 | else | |
505 | core->byte_xor = 0; | |
506 | } | |
cd0d873d AC |
507 | } |
508 | } | |
509 | else { | |
510 | if (is_xor) | |
f90b720b | 511 | sim_engine_abort (sd, cpu, NULL_CIA, |
cd0d873d AC |
512 | "Attempted to enable xor-endian mode when permenantly disabled."); |
513 | } | |
514 | } | |
515 | ||
f90b720b AC |
516 | STATIC_INLINE_SIM_CORE\ |
517 | (void) | |
518 | reverse_n (unsigned_1 *dest, | |
519 | const unsigned_1 *src, | |
520 | int nr_bytes) | |
521 | { | |
522 | int i; | |
523 | for (i = 0; i < nr_bytes; i++) | |
524 | { | |
525 | dest [nr_bytes - i - 1] = src [i]; | |
526 | } | |
527 | } | |
528 | ||
529 | ||
530 | EXTERN_SIM_CORE\ | |
531 | (unsigned) | |
532 | sim_core_xor_read_buffer (SIM_DESC sd, | |
533 | sim_cpu *cpu, | |
534 | sim_core_maps map, | |
535 | void *buffer, | |
536 | address_word addr, | |
537 | unsigned nr_bytes) | |
538 | { | |
539 | address_word byte_xor = (cpu == NULL ? STATE_CORE (sd)->byte_xor : CPU_CORE (cpu)->xor[0]); | |
540 | if (!WITH_XOR_ENDIAN || !byte_xor) | |
541 | return sim_core_read_buffer (sd, cpu, map, buffer, addr, nr_bytes); | |
542 | else | |
543 | /* only break up transfers when xor-endian is both selected and enabled */ | |
544 | { | |
545 | unsigned_1 x[WITH_XOR_ENDIAN]; | |
546 | unsigned nr_transfered = 0; | |
547 | address_word start = addr; | |
548 | unsigned nr_this_transfer = (WITH_XOR_ENDIAN - (addr & ~(WITH_XOR_ENDIAN - 1))); | |
549 | address_word stop; | |
550 | /* initial and intermediate transfers are broken when they cross | |
551 | an XOR endian boundary */ | |
552 | while (nr_transfered + nr_this_transfer < nr_bytes) | |
553 | /* initial/intermediate transfers */ | |
554 | { | |
555 | /* since xor-endian is enabled stop^xor defines the start | |
556 | address of the transfer */ | |
557 | stop = start + nr_this_transfer - 1; | |
558 | SIM_ASSERT (start <= stop); | |
559 | SIM_ASSERT ((stop ^ byte_xor) <= (start ^ byte_xor)); | |
560 | if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer) | |
561 | != nr_this_transfer) | |
562 | return nr_transfered; | |
563 | reverse_n (&((unsigned_1*)buffer)[nr_transfered], x, nr_this_transfer); | |
564 | nr_transfered += nr_this_transfer; | |
565 | nr_this_transfer = WITH_XOR_ENDIAN; | |
566 | start = stop + 1; | |
567 | } | |
568 | /* final transfer */ | |
569 | nr_this_transfer = nr_bytes - nr_transfered; | |
570 | stop = start + nr_this_transfer - 1; | |
571 | SIM_ASSERT (stop == (addr + nr_bytes - 1)); | |
572 | if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer) | |
573 | != nr_this_transfer) | |
574 | return nr_transfered; | |
575 | reverse_n (&((unsigned_1*)buffer)[nr_transfered], x, nr_this_transfer); | |
576 | return nr_bytes; | |
577 | } | |
578 | } | |
579 | ||
580 | ||
581 | EXTERN_SIM_CORE\ | |
582 | (unsigned) | |
583 | sim_core_xor_write_buffer (SIM_DESC sd, | |
584 | sim_cpu *cpu, | |
585 | sim_core_maps map, | |
586 | const void *buffer, | |
587 | address_word addr, | |
588 | unsigned nr_bytes) | |
589 | { | |
590 | address_word byte_xor = (cpu == NULL ? STATE_CORE (sd)->byte_xor : CPU_CORE (cpu)->xor[0]); | |
591 | if (!WITH_XOR_ENDIAN || !byte_xor) | |
592 | return sim_core_write_buffer (sd, cpu, map, buffer, addr, nr_bytes); | |
593 | else | |
594 | /* only break up transfers when xor-endian is both selected and enabled */ | |
595 | { | |
596 | unsigned_1 x[WITH_XOR_ENDIAN]; | |
597 | unsigned nr_transfered = 0; | |
598 | address_word start = addr; | |
599 | unsigned nr_this_transfer = (WITH_XOR_ENDIAN - (addr & ~(WITH_XOR_ENDIAN - 1))); | |
600 | address_word stop; | |
601 | /* initial and intermediate transfers are broken when they cross | |
602 | an XOR endian boundary */ | |
603 | while (nr_transfered + nr_this_transfer < nr_bytes) | |
604 | /* initial/intermediate transfers */ | |
605 | { | |
606 | /* since xor-endian is enabled stop^xor defines the start | |
607 | address of the transfer */ | |
608 | stop = start + nr_this_transfer - 1; | |
609 | SIM_ASSERT (start <= stop); | |
610 | SIM_ASSERT ((stop ^ byte_xor) <= (start ^ byte_xor)); | |
611 | reverse_n (x, &((unsigned_1*)buffer)[nr_transfered], nr_this_transfer); | |
612 | if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer) | |
613 | != nr_this_transfer) | |
614 | return nr_transfered; | |
615 | nr_transfered += nr_this_transfer; | |
616 | nr_this_transfer = WITH_XOR_ENDIAN; | |
617 | start = stop + 1; | |
618 | } | |
619 | /* final transfer */ | |
620 | nr_this_transfer = nr_bytes - nr_transfered; | |
621 | stop = start + nr_this_transfer - 1; | |
622 | SIM_ASSERT (stop == (addr + nr_bytes - 1)); | |
623 | reverse_n (x, &((unsigned_1*)buffer)[nr_transfered], nr_this_transfer); | |
624 | if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer) | |
625 | != nr_this_transfer) | |
626 | return nr_transfered; | |
627 | return nr_bytes; | |
628 | } | |
629 | } | |
cd0d873d AC |
630 | |
631 | ||
632 | ||
f2de7dfd AC |
633 | /* define the read/write 1/2/4/8/word functions */ |
634 | ||
635 | #define N 1 | |
636 | #include "sim-n-core.h" | |
637 | #undef N | |
638 | ||
639 | #define N 2 | |
640 | #include "sim-n-core.h" | |
641 | #undef N | |
642 | ||
643 | #define N 4 | |
644 | #include "sim-n-core.h" | |
645 | #undef N | |
646 | ||
647 | #define N 8 | |
648 | #include "sim-n-core.h" | |
649 | #undef N | |
650 | ||
651 | #define N word | |
652 | #include "sim-n-core.h" | |
653 | #undef N | |
654 | ||
655 | #endif |