Commit | Line | Data |
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c906108c | 1 | /* Simulator memory option handling. |
dc3cf14f JB |
2 | Copyright (C) 1996-1999, 2007, 2008, 2009, 2010 |
3 | Free Software Foundation, Inc. | |
c906108c SS |
4 | Contributed by Cygnus Support. |
5 | ||
6 | This file is part of GDB, the GNU debugger. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
10 | the Free Software Foundation; either version 3 of the License, or |
11 | (at your option) any later version. | |
c906108c SS |
12 | |
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
4744ac1b JB |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c | 20 | |
764f1408 FCE |
21 | #include "cconfig.h" |
22 | ||
c906108c SS |
23 | #include "sim-main.h" |
24 | #include "sim-assert.h" | |
25 | #include "sim-options.h" | |
26 | ||
27 | #ifdef HAVE_STRING_H | |
28 | #include <string.h> | |
29 | #else | |
30 | #ifdef HAVE_STRINGS_H | |
31 | #include <strings.h> | |
32 | #endif | |
33 | #endif | |
34 | #ifdef HAVE_STDLIB_H | |
35 | #include <stdlib.h> | |
36 | #endif | |
764f1408 FCE |
37 | #ifdef HAVE_ERRNO_H |
38 | #include <errno.h> | |
39 | #endif | |
40 | #ifdef HAVE_FCNTL_H | |
41 | #include <fcntl.h> | |
42 | #endif | |
43 | #ifdef HAVE_SYS_MMAN_H | |
44 | #include <sys/mman.h> | |
45 | #endif | |
46 | #ifdef HAVE_SYS_STAT_H | |
47 | #include <sys/stat.h> | |
48 | #endif | |
bf962092 AC |
49 | #ifdef HAVE_UNISTD_H |
50 | #include <unistd.h> | |
51 | #endif | |
c906108c | 52 | |
764f1408 | 53 | /* Memory fill byte. */ |
c906108c SS |
54 | static unsigned8 fill_byte_value; |
55 | static int fill_byte_flag = 0; | |
56 | ||
764f1408 FCE |
57 | /* Memory mapping; see OPTION_MEMORY_MAPFILE. */ |
58 | static int mmap_next_fd = -1; | |
59 | ||
c906108c SS |
60 | /* Memory command line options. */ |
61 | ||
62 | enum { | |
63 | OPTION_MEMORY_DELETE = OPTION_START, | |
64 | OPTION_MEMORY_REGION, | |
65 | OPTION_MEMORY_SIZE, | |
66 | OPTION_MEMORY_INFO, | |
67 | OPTION_MEMORY_ALIAS, | |
68 | OPTION_MEMORY_CLEAR, | |
764f1408 | 69 | OPTION_MEMORY_FILL, |
bef6be3d MF |
70 | OPTION_MEMORY_MAPFILE, |
71 | OPTION_MAP_INFO | |
c906108c SS |
72 | }; |
73 | ||
74 | static DECLARE_OPTION_HANDLER (memory_option_handler); | |
75 | ||
76 | static const OPTION memory_options[] = | |
77 | { | |
78 | { {"memory-delete", required_argument, NULL, OPTION_MEMORY_DELETE }, | |
79 | '\0', "ADDRESS|all", "Delete memory at ADDRESS (all addresses)", | |
80 | memory_option_handler }, | |
81 | { {"delete-memory", required_argument, NULL, OPTION_MEMORY_DELETE }, | |
82 | '\0', "ADDRESS", NULL, | |
83 | memory_option_handler }, | |
84 | ||
85 | { {"memory-region", required_argument, NULL, OPTION_MEMORY_REGION }, | |
86 | '\0', "ADDRESS,SIZE[,MODULO]", "Add a memory region", | |
87 | memory_option_handler }, | |
88 | ||
89 | { {"memory-alias", required_argument, NULL, OPTION_MEMORY_ALIAS }, | |
90 | '\0', "ADDRESS,SIZE{,ADDRESS}", "Add memory shadow", | |
91 | memory_option_handler }, | |
92 | ||
93 | { {"memory-size", required_argument, NULL, OPTION_MEMORY_SIZE }, | |
f40f1a01 NC |
94 | '\0', "<size>[in bytes, Kb (k suffix), Mb (m suffix) or Gb (g suffix)]", |
95 | "Add memory at address zero", memory_option_handler }, | |
c906108c SS |
96 | |
97 | { {"memory-fill", required_argument, NULL, OPTION_MEMORY_FILL }, | |
98 | '\0', "VALUE", "Fill subsequently added memory regions", | |
99 | memory_option_handler }, | |
100 | ||
101 | { {"memory-clear", no_argument, NULL, OPTION_MEMORY_CLEAR }, | |
102 | '\0', NULL, "Clear subsequently added memory regions", | |
103 | memory_option_handler }, | |
104 | ||
764f1408 FCE |
105 | #if defined(HAVE_MMAP) && defined(HAVE_MUNMAP) |
106 | { {"memory-mapfile", required_argument, NULL, OPTION_MEMORY_MAPFILE }, | |
107 | '\0', "FILE", "Memory-map next memory region from file", | |
108 | memory_option_handler }, | |
109 | #endif | |
110 | ||
c906108c SS |
111 | { {"memory-info", no_argument, NULL, OPTION_MEMORY_INFO }, |
112 | '\0', NULL, "List configurable memory regions", | |
113 | memory_option_handler }, | |
114 | { {"info-memory", no_argument, NULL, OPTION_MEMORY_INFO }, | |
115 | '\0', NULL, NULL, | |
116 | memory_option_handler }, | |
bef6be3d MF |
117 | { {"map-info", no_argument, NULL, OPTION_MAP_INFO }, |
118 | '\0', NULL, "List mapped regions", | |
119 | memory_option_handler }, | |
c906108c SS |
120 | |
121 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } | |
122 | }; | |
123 | ||
124 | ||
125 | static sim_memopt * | |
126 | do_memopt_add (SIM_DESC sd, | |
127 | int level, | |
128 | int space, | |
129 | address_word addr, | |
130 | address_word nr_bytes, | |
131 | unsigned modulo, | |
132 | sim_memopt **entry, | |
133 | void *buffer) | |
134 | { | |
135 | void *fill_buffer; | |
136 | unsigned fill_length; | |
137 | void *free_buffer; | |
764f1408 | 138 | unsigned long free_length; |
c906108c SS |
139 | |
140 | if (buffer != NULL) | |
141 | { | |
142 | /* Buffer already given. sim_memory_uninstall will free it. */ | |
143 | sim_core_attach (sd, NULL, | |
144 | level, access_read_write_exec, space, | |
145 | addr, nr_bytes, modulo, NULL, buffer); | |
146 | ||
147 | free_buffer = buffer; | |
764f1408 | 148 | free_length = 0; |
c906108c SS |
149 | fill_buffer = buffer; |
150 | fill_length = (modulo == 0) ? nr_bytes : modulo; | |
151 | } | |
152 | else | |
153 | { | |
154 | /* Allocate new well-aligned buffer, just as sim_core_attach(). */ | |
155 | void *aligned_buffer; | |
156 | int padding = (addr % sizeof (unsigned64)); | |
157 | unsigned long bytes = (modulo == 0 ? nr_bytes : modulo) + padding; | |
158 | ||
764f1408 FCE |
159 | free_buffer = NULL; |
160 | free_length = bytes; | |
c906108c | 161 | |
764f1408 FCE |
162 | #ifdef HAVE_MMAP |
163 | /* Memory map or malloc(). */ | |
164 | if (mmap_next_fd >= 0) | |
165 | { | |
166 | /* Check that given file is big enough. */ | |
167 | struct stat s; | |
168 | int rc; | |
169 | ||
170 | /* Some kernels will SIGBUS the application if mmap'd file | |
171 | is not large enough. */ | |
172 | rc = fstat (mmap_next_fd, &s); | |
173 | if (rc < 0 || s.st_size < bytes) | |
174 | { | |
175 | sim_io_error (sd, | |
176 | "Error, cannot confirm that mmap file is large enough " | |
bf962092 | 177 | "(>= %ld bytes)\n", bytes); |
764f1408 FCE |
178 | } |
179 | ||
180 | free_buffer = mmap (0, bytes, PROT_READ|PROT_WRITE, MAP_SHARED, mmap_next_fd, 0); | |
181 | if (free_buffer == 0 || free_buffer == (char*)-1) /* MAP_FAILED */ | |
182 | { | |
183 | sim_io_error (sd, "Error, cannot mmap file (%s).\n", | |
184 | strerror(errno)); | |
185 | } | |
186 | } | |
187 | #endif | |
188 | ||
189 | /* Need heap allocation? */ | |
190 | if (free_buffer == NULL) | |
191 | { | |
192 | /* If filling with non-zero value, do not use clearing allocator. */ | |
193 | if (fill_byte_flag && fill_byte_value != 0) | |
194 | free_buffer = xmalloc (bytes); /* don't clear */ | |
195 | else | |
196 | free_buffer = zalloc (bytes); /* clear */ | |
197 | } | |
c906108c SS |
198 | |
199 | aligned_buffer = (char*) free_buffer + padding; | |
200 | ||
201 | sim_core_attach (sd, NULL, | |
202 | level, access_read_write_exec, space, | |
203 | addr, nr_bytes, modulo, NULL, aligned_buffer); | |
204 | ||
205 | fill_buffer = aligned_buffer; | |
206 | fill_length = (modulo == 0) ? nr_bytes : modulo; | |
207 | ||
208 | /* If we just used a clearing allocator, and are about to fill with | |
209 | zero, truncate the redundant fill operation. */ | |
210 | ||
211 | if (fill_byte_flag && fill_byte_value == 0) | |
212 | fill_length = 1; /* avoid boundary length=0 case */ | |
213 | } | |
214 | ||
215 | if (fill_byte_flag) | |
216 | { | |
217 | ASSERT (fill_buffer != 0); | |
218 | memset ((char*) fill_buffer, fill_byte_value, fill_length); | |
219 | } | |
220 | ||
221 | while ((*entry) != NULL) | |
222 | entry = &(*entry)->next; | |
223 | (*entry) = ZALLOC (sim_memopt); | |
224 | (*entry)->level = level; | |
225 | (*entry)->space = space; | |
226 | (*entry)->addr = addr; | |
227 | (*entry)->nr_bytes = nr_bytes; | |
228 | (*entry)->modulo = modulo; | |
229 | (*entry)->buffer = free_buffer; | |
230 | ||
764f1408 FCE |
231 | /* Record memory unmapping info. */ |
232 | if (mmap_next_fd >= 0) | |
233 | { | |
234 | (*entry)->munmap_length = free_length; | |
235 | close (mmap_next_fd); | |
236 | mmap_next_fd = -1; | |
237 | } | |
238 | else | |
239 | (*entry)->munmap_length = 0; | |
240 | ||
c906108c SS |
241 | return (*entry); |
242 | } | |
243 | ||
244 | static SIM_RC | |
245 | do_memopt_delete (SIM_DESC sd, | |
246 | int level, | |
247 | int space, | |
248 | address_word addr) | |
249 | { | |
250 | sim_memopt **entry = &STATE_MEMOPT (sd); | |
251 | sim_memopt *alias; | |
252 | while ((*entry) != NULL | |
253 | && ((*entry)->level != level | |
254 | || (*entry)->space != space | |
255 | || (*entry)->addr != addr)) | |
256 | entry = &(*entry)->next; | |
257 | if ((*entry) == NULL) | |
258 | { | |
259 | sim_io_eprintf (sd, "Memory at 0x%lx not found, not deleted\n", | |
260 | (long) addr); | |
261 | return SIM_RC_FAIL; | |
262 | } | |
263 | /* delete any buffer */ | |
264 | if ((*entry)->buffer != NULL) | |
764f1408 FCE |
265 | { |
266 | #ifdef HAVE_MUNMAP | |
267 | if ((*entry)->munmap_length > 0) | |
268 | munmap ((*entry)->buffer, (*entry)->munmap_length); | |
269 | else | |
270 | #endif | |
271 | zfree ((*entry)->buffer); | |
272 | } | |
273 | ||
c906108c SS |
274 | /* delete it and its aliases */ |
275 | alias = *entry; | |
276 | *entry = (*entry)->next; | |
277 | while (alias != NULL) | |
278 | { | |
279 | sim_memopt *dead = alias; | |
280 | alias = alias->alias; | |
281 | sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr); | |
282 | zfree (dead); | |
283 | } | |
284 | return SIM_RC_OK; | |
285 | } | |
286 | ||
287 | ||
288 | static char * | |
289 | parse_size (char *chp, | |
290 | address_word *nr_bytes, | |
291 | unsigned *modulo) | |
292 | { | |
f40f1a01 | 293 | /* <nr_bytes>[K|M|G] [ "%" <modulo> ] */ |
c906108c | 294 | *nr_bytes = strtoul (chp, &chp, 0); |
f40f1a01 | 295 | switch (*chp) |
c906108c | 296 | { |
f40f1a01 | 297 | case '%': |
c906108c | 298 | *modulo = strtoul (chp + 1, &chp, 0); |
f40f1a01 NC |
299 | break; |
300 | case 'g': case 'G': /* Gigabyte suffix. */ | |
301 | *nr_bytes <<= 10; | |
302 | /* Fall through. */ | |
303 | case 'm': case 'M': /* Megabyte suffix. */ | |
304 | *nr_bytes <<= 10; | |
305 | /* Fall through. */ | |
306 | case 'k': case 'K': /* Kilobyte suffix. */ | |
307 | *nr_bytes <<= 10; | |
308 | /* Check for a modulo specifier after the suffix. */ | |
309 | ++ chp; | |
310 | if (* chp == 'b' || * chp == 'B') | |
311 | ++ chp; | |
312 | if (* chp == '%') | |
313 | *modulo = strtoul (chp + 1, &chp, 0); | |
314 | break; | |
c906108c SS |
315 | } |
316 | return chp; | |
317 | } | |
318 | ||
319 | static char * | |
320 | parse_ulong_value (char *chp, | |
321 | unsigned long *value) | |
322 | { | |
323 | *value = strtoul (chp, &chp, 0); | |
324 | return chp; | |
325 | } | |
326 | ||
327 | static char * | |
328 | parse_addr (char *chp, | |
329 | int *level, | |
330 | int *space, | |
331 | address_word *addr) | |
332 | { | |
333 | /* [ <space> ": " ] <addr> [ "@" <level> ] */ | |
334 | *addr = (unsigned long) strtoul (chp, &chp, 0); | |
335 | if (*chp == ':') | |
336 | { | |
337 | *space = *addr; | |
338 | *addr = (unsigned long) strtoul (chp + 1, &chp, 0); | |
339 | } | |
340 | if (*chp == '@') | |
341 | { | |
342 | *level = strtoul (chp + 1, &chp, 0); | |
343 | } | |
344 | return chp; | |
345 | } | |
346 | ||
347 | ||
348 | static SIM_RC | |
349 | memory_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, | |
350 | char *arg, int is_command) | |
351 | { | |
352 | switch (opt) | |
353 | { | |
354 | ||
355 | case OPTION_MEMORY_DELETE: | |
356 | if (strcasecmp (arg, "all") == 0) | |
357 | { | |
358 | while (STATE_MEMOPT (sd) != NULL) | |
359 | do_memopt_delete (sd, | |
360 | STATE_MEMOPT (sd)->level, | |
361 | STATE_MEMOPT (sd)->space, | |
362 | STATE_MEMOPT (sd)->addr); | |
363 | return SIM_RC_OK; | |
364 | } | |
365 | else | |
366 | { | |
367 | int level = 0; | |
368 | int space = 0; | |
369 | address_word addr = 0; | |
370 | parse_addr (arg, &level, &space, &addr); | |
371 | return do_memopt_delete (sd, level, space, addr); | |
372 | } | |
373 | ||
374 | case OPTION_MEMORY_REGION: | |
375 | { | |
376 | char *chp = arg; | |
377 | int level = 0; | |
378 | int space = 0; | |
379 | address_word addr = 0; | |
380 | address_word nr_bytes = 0; | |
381 | unsigned modulo = 0; | |
382 | /* parse the arguments */ | |
383 | chp = parse_addr (chp, &level, &space, &addr); | |
384 | if (*chp != ',') | |
385 | { | |
386 | sim_io_eprintf (sd, "Missing size for memory-region\n"); | |
387 | return SIM_RC_FAIL; | |
388 | } | |
389 | chp = parse_size (chp + 1, &nr_bytes, &modulo); | |
390 | /* old style */ | |
391 | if (*chp == ',') | |
392 | modulo = strtoul (chp + 1, &chp, 0); | |
393 | /* try to attach/insert it */ | |
394 | do_memopt_add (sd, level, space, addr, nr_bytes, modulo, | |
395 | &STATE_MEMOPT (sd), NULL); | |
396 | return SIM_RC_OK; | |
397 | } | |
398 | ||
399 | case OPTION_MEMORY_ALIAS: | |
400 | { | |
401 | char *chp = arg; | |
402 | int level = 0; | |
403 | int space = 0; | |
404 | address_word addr = 0; | |
405 | address_word nr_bytes = 0; | |
406 | unsigned modulo = 0; | |
407 | sim_memopt *entry; | |
408 | /* parse the arguments */ | |
409 | chp = parse_addr (chp, &level, &space, &addr); | |
410 | if (*chp != ',') | |
411 | { | |
412 | sim_io_eprintf (sd, "Missing size for memory-region\n"); | |
413 | return SIM_RC_FAIL; | |
414 | } | |
415 | chp = parse_size (chp + 1, &nr_bytes, &modulo); | |
416 | /* try to attach/insert the main record */ | |
417 | entry = do_memopt_add (sd, level, space, addr, nr_bytes, modulo, | |
418 | &STATE_MEMOPT (sd), | |
419 | NULL); | |
420 | /* now attach all the aliases */ | |
421 | while (*chp == ',') | |
422 | { | |
423 | int a_level = level; | |
424 | int a_space = space; | |
425 | address_word a_addr = addr; | |
426 | chp = parse_addr (chp + 1, &a_level, &a_space, &a_addr); | |
427 | do_memopt_add (sd, a_level, a_space, a_addr, nr_bytes, modulo, | |
428 | &entry->alias, entry->buffer); | |
429 | } | |
430 | return SIM_RC_OK; | |
431 | } | |
432 | ||
433 | case OPTION_MEMORY_SIZE: | |
434 | { | |
435 | int level = 0; | |
436 | int space = 0; | |
437 | address_word addr = 0; | |
438 | address_word nr_bytes = 0; | |
439 | unsigned modulo = 0; | |
440 | /* parse the arguments */ | |
441 | parse_size (arg, &nr_bytes, &modulo); | |
442 | /* try to attach/insert it */ | |
443 | do_memopt_add (sd, level, space, addr, nr_bytes, modulo, | |
444 | &STATE_MEMOPT (sd), NULL); | |
445 | return SIM_RC_OK; | |
446 | } | |
447 | ||
448 | case OPTION_MEMORY_CLEAR: | |
449 | { | |
450 | fill_byte_value = (unsigned8) 0; | |
451 | fill_byte_flag = 1; | |
452 | return SIM_RC_OK; | |
453 | break; | |
454 | } | |
455 | ||
456 | case OPTION_MEMORY_FILL: | |
457 | { | |
458 | unsigned long fill_value; | |
459 | parse_ulong_value (arg, &fill_value); | |
460 | if (fill_value > 255) | |
461 | { | |
462 | sim_io_eprintf (sd, "Missing fill value between 0 and 255\n"); | |
463 | return SIM_RC_FAIL; | |
464 | } | |
465 | fill_byte_value = (unsigned8) fill_value; | |
466 | fill_byte_flag = 1; | |
467 | return SIM_RC_OK; | |
468 | break; | |
469 | } | |
470 | ||
764f1408 FCE |
471 | case OPTION_MEMORY_MAPFILE: |
472 | { | |
473 | if (mmap_next_fd >= 0) | |
474 | { | |
475 | sim_io_eprintf (sd, "Duplicate memory-mapfile option\n"); | |
476 | return SIM_RC_FAIL; | |
477 | } | |
478 | ||
479 | mmap_next_fd = open (arg, O_RDWR); | |
480 | if (mmap_next_fd < 0) | |
481 | { | |
482 | sim_io_eprintf (sd, "Cannot open file `%s': %s\n", | |
483 | arg, strerror(errno)); | |
484 | return SIM_RC_FAIL; | |
485 | } | |
486 | ||
487 | return SIM_RC_OK; | |
488 | } | |
489 | ||
c906108c SS |
490 | case OPTION_MEMORY_INFO: |
491 | { | |
492 | sim_memopt *entry; | |
493 | sim_io_printf (sd, "Memory maps:\n"); | |
494 | for (entry = STATE_MEMOPT (sd); entry != NULL; entry = entry->next) | |
495 | { | |
496 | sim_memopt *alias; | |
497 | sim_io_printf (sd, " memory"); | |
498 | if (entry->alias == NULL) | |
499 | sim_io_printf (sd, " region "); | |
500 | else | |
501 | sim_io_printf (sd, " alias "); | |
502 | if (entry->space != 0) | |
503 | sim_io_printf (sd, "0x%lx:", (long) entry->space); | |
504 | sim_io_printf (sd, "0x%08lx", (long) entry->addr); | |
505 | if (entry->level != 0) | |
506 | sim_io_printf (sd, "@0x%lx", (long) entry->level); | |
507 | sim_io_printf (sd, ",0x%lx", | |
508 | (long) entry->nr_bytes); | |
509 | if (entry->modulo != 0) | |
510 | sim_io_printf (sd, "%%0x%lx", (long) entry->modulo); | |
511 | for (alias = entry->alias; | |
512 | alias != NULL; | |
513 | alias = alias->next) | |
514 | { | |
515 | if (alias->space != 0) | |
516 | sim_io_printf (sd, "0x%lx:", (long) alias->space); | |
517 | sim_io_printf (sd, ",0x%08lx", (long) alias->addr); | |
518 | if (alias->level != 0) | |
519 | sim_io_printf (sd, "@0x%lx", (long) alias->level); | |
520 | } | |
521 | sim_io_printf (sd, "\n"); | |
522 | } | |
523 | return SIM_RC_OK; | |
524 | break; | |
525 | } | |
526 | ||
bef6be3d MF |
527 | case OPTION_MAP_INFO: |
528 | { | |
529 | sim_core *memory = STATE_CORE (sd); | |
530 | unsigned nr_map; | |
531 | ||
532 | for (nr_map = 0; nr_map < nr_maps; ++nr_map) | |
533 | { | |
534 | sim_core_map *map = &memory->common.map[nr_map]; | |
535 | sim_core_mapping *mapping = map->first; | |
536 | ||
537 | if (!mapping) | |
538 | continue; | |
539 | ||
540 | sim_io_printf (sd, "%s maps:\n", map_to_str (nr_map)); | |
541 | do | |
542 | { | |
543 | unsigned modulo; | |
544 | ||
545 | sim_io_printf (sd, " map "); | |
546 | if (mapping->space != 0) | |
547 | sim_io_printf (sd, "0x%x:", mapping->space); | |
548 | sim_io_printf (sd, "0x%08lx", (long) mapping->base); | |
549 | if (mapping->level != 0) | |
550 | sim_io_printf (sd, "@0x%x", mapping->level); | |
551 | sim_io_printf (sd, ",0x%lx", (long) mapping->nr_bytes); | |
552 | modulo = mapping->mask + 1; | |
553 | if (modulo != 0) | |
554 | sim_io_printf (sd, "%%0x%x", modulo); | |
555 | sim_io_printf (sd, "\n"); | |
556 | ||
557 | mapping = mapping->next; | |
558 | } | |
559 | while (mapping); | |
560 | } | |
561 | ||
562 | return SIM_RC_OK; | |
563 | break; | |
564 | } | |
565 | ||
c906108c SS |
566 | default: |
567 | sim_io_eprintf (sd, "Unknown memory option %d\n", opt); | |
568 | return SIM_RC_FAIL; | |
569 | ||
570 | } | |
571 | ||
572 | return SIM_RC_FAIL; | |
573 | } | |
574 | ||
575 | ||
576 | /* "memory" module install handler. | |
577 | ||
578 | This is called via sim_module_install to install the "memory" subsystem | |
579 | into the simulator. */ | |
580 | ||
581 | static MODULE_INIT_FN sim_memory_init; | |
582 | static MODULE_UNINSTALL_FN sim_memory_uninstall; | |
583 | ||
584 | SIM_RC | |
585 | sim_memopt_install (SIM_DESC sd) | |
586 | { | |
587 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
588 | sim_add_option_table (sd, NULL, memory_options); | |
589 | sim_module_add_uninstall_fn (sd, sim_memory_uninstall); | |
590 | sim_module_add_init_fn (sd, sim_memory_init); | |
591 | return SIM_RC_OK; | |
592 | } | |
593 | ||
594 | ||
595 | /* Uninstall the "memory" subsystem from the simulator. */ | |
596 | ||
597 | static void | |
598 | sim_memory_uninstall (SIM_DESC sd) | |
599 | { | |
600 | sim_memopt **entry = &STATE_MEMOPT (sd); | |
601 | sim_memopt *alias; | |
602 | ||
603 | while ((*entry) != NULL) | |
604 | { | |
605 | /* delete any buffer */ | |
606 | if ((*entry)->buffer != NULL) | |
764f1408 FCE |
607 | { |
608 | #ifdef HAVE_MUNMAP | |
609 | if ((*entry)->munmap_length > 0) | |
610 | munmap ((*entry)->buffer, (*entry)->munmap_length); | |
611 | else | |
612 | #endif | |
613 | zfree ((*entry)->buffer); | |
614 | } | |
c906108c SS |
615 | |
616 | /* delete it and its aliases */ | |
617 | alias = *entry; | |
7a292a7a SS |
618 | |
619 | /* next victim */ | |
620 | *entry = (*entry)->next; | |
621 | ||
c906108c SS |
622 | while (alias != NULL) |
623 | { | |
624 | sim_memopt *dead = alias; | |
625 | alias = alias->alias; | |
626 | sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr); | |
627 | zfree (dead); | |
628 | } | |
c906108c SS |
629 | } |
630 | } | |
631 | ||
632 | ||
633 | static SIM_RC | |
634 | sim_memory_init (SIM_DESC sd) | |
635 | { | |
764f1408 FCE |
636 | /* Reinitialize option modifier flags, in case they were left |
637 | over from a previous sim startup event. */ | |
638 | fill_byte_flag = 0; | |
639 | mmap_next_fd = -1; | |
640 | ||
c906108c SS |
641 | return SIM_RC_OK; |
642 | } |