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c906108c | 1 | /* Simulator memory option handling. |
9b254dd1 | 2 | Copyright (C) 1996-1999, 2007, 2008 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support. |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
c906108c SS |
11 | |
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
4744ac1b JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c | 19 | |
764f1408 FCE |
20 | #include "cconfig.h" |
21 | ||
c906108c SS |
22 | #include "sim-main.h" |
23 | #include "sim-assert.h" | |
24 | #include "sim-options.h" | |
25 | ||
26 | #ifdef HAVE_STRING_H | |
27 | #include <string.h> | |
28 | #else | |
29 | #ifdef HAVE_STRINGS_H | |
30 | #include <strings.h> | |
31 | #endif | |
32 | #endif | |
33 | #ifdef HAVE_STDLIB_H | |
34 | #include <stdlib.h> | |
35 | #endif | |
764f1408 FCE |
36 | #ifdef HAVE_ERRNO_H |
37 | #include <errno.h> | |
38 | #endif | |
39 | #ifdef HAVE_FCNTL_H | |
40 | #include <fcntl.h> | |
41 | #endif | |
42 | #ifdef HAVE_SYS_MMAN_H | |
43 | #include <sys/mman.h> | |
44 | #endif | |
45 | #ifdef HAVE_SYS_STAT_H | |
46 | #include <sys/stat.h> | |
47 | #endif | |
bf962092 AC |
48 | #ifdef HAVE_UNISTD_H |
49 | #include <unistd.h> | |
50 | #endif | |
c906108c | 51 | |
764f1408 | 52 | /* Memory fill byte. */ |
c906108c SS |
53 | static unsigned8 fill_byte_value; |
54 | static int fill_byte_flag = 0; | |
55 | ||
764f1408 FCE |
56 | /* Memory mapping; see OPTION_MEMORY_MAPFILE. */ |
57 | static int mmap_next_fd = -1; | |
58 | ||
c906108c SS |
59 | /* Memory command line options. */ |
60 | ||
61 | enum { | |
62 | OPTION_MEMORY_DELETE = OPTION_START, | |
63 | OPTION_MEMORY_REGION, | |
64 | OPTION_MEMORY_SIZE, | |
65 | OPTION_MEMORY_INFO, | |
66 | OPTION_MEMORY_ALIAS, | |
67 | OPTION_MEMORY_CLEAR, | |
764f1408 FCE |
68 | OPTION_MEMORY_FILL, |
69 | OPTION_MEMORY_MAPFILE | |
c906108c SS |
70 | }; |
71 | ||
72 | static DECLARE_OPTION_HANDLER (memory_option_handler); | |
73 | ||
74 | static const OPTION memory_options[] = | |
75 | { | |
76 | { {"memory-delete", required_argument, NULL, OPTION_MEMORY_DELETE }, | |
77 | '\0', "ADDRESS|all", "Delete memory at ADDRESS (all addresses)", | |
78 | memory_option_handler }, | |
79 | { {"delete-memory", required_argument, NULL, OPTION_MEMORY_DELETE }, | |
80 | '\0', "ADDRESS", NULL, | |
81 | memory_option_handler }, | |
82 | ||
83 | { {"memory-region", required_argument, NULL, OPTION_MEMORY_REGION }, | |
84 | '\0', "ADDRESS,SIZE[,MODULO]", "Add a memory region", | |
85 | memory_option_handler }, | |
86 | ||
87 | { {"memory-alias", required_argument, NULL, OPTION_MEMORY_ALIAS }, | |
88 | '\0', "ADDRESS,SIZE{,ADDRESS}", "Add memory shadow", | |
89 | memory_option_handler }, | |
90 | ||
91 | { {"memory-size", required_argument, NULL, OPTION_MEMORY_SIZE }, | |
f40f1a01 NC |
92 | '\0', "<size>[in bytes, Kb (k suffix), Mb (m suffix) or Gb (g suffix)]", |
93 | "Add memory at address zero", memory_option_handler }, | |
c906108c SS |
94 | |
95 | { {"memory-fill", required_argument, NULL, OPTION_MEMORY_FILL }, | |
96 | '\0', "VALUE", "Fill subsequently added memory regions", | |
97 | memory_option_handler }, | |
98 | ||
99 | { {"memory-clear", no_argument, NULL, OPTION_MEMORY_CLEAR }, | |
100 | '\0', NULL, "Clear subsequently added memory regions", | |
101 | memory_option_handler }, | |
102 | ||
764f1408 FCE |
103 | #if defined(HAVE_MMAP) && defined(HAVE_MUNMAP) |
104 | { {"memory-mapfile", required_argument, NULL, OPTION_MEMORY_MAPFILE }, | |
105 | '\0', "FILE", "Memory-map next memory region from file", | |
106 | memory_option_handler }, | |
107 | #endif | |
108 | ||
c906108c SS |
109 | { {"memory-info", no_argument, NULL, OPTION_MEMORY_INFO }, |
110 | '\0', NULL, "List configurable memory regions", | |
111 | memory_option_handler }, | |
112 | { {"info-memory", no_argument, NULL, OPTION_MEMORY_INFO }, | |
113 | '\0', NULL, NULL, | |
114 | memory_option_handler }, | |
115 | ||
116 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } | |
117 | }; | |
118 | ||
119 | ||
120 | static sim_memopt * | |
121 | do_memopt_add (SIM_DESC sd, | |
122 | int level, | |
123 | int space, | |
124 | address_word addr, | |
125 | address_word nr_bytes, | |
126 | unsigned modulo, | |
127 | sim_memopt **entry, | |
128 | void *buffer) | |
129 | { | |
130 | void *fill_buffer; | |
131 | unsigned fill_length; | |
132 | void *free_buffer; | |
764f1408 | 133 | unsigned long free_length; |
c906108c SS |
134 | |
135 | if (buffer != NULL) | |
136 | { | |
137 | /* Buffer already given. sim_memory_uninstall will free it. */ | |
138 | sim_core_attach (sd, NULL, | |
139 | level, access_read_write_exec, space, | |
140 | addr, nr_bytes, modulo, NULL, buffer); | |
141 | ||
142 | free_buffer = buffer; | |
764f1408 | 143 | free_length = 0; |
c906108c SS |
144 | fill_buffer = buffer; |
145 | fill_length = (modulo == 0) ? nr_bytes : modulo; | |
146 | } | |
147 | else | |
148 | { | |
149 | /* Allocate new well-aligned buffer, just as sim_core_attach(). */ | |
150 | void *aligned_buffer; | |
151 | int padding = (addr % sizeof (unsigned64)); | |
152 | unsigned long bytes = (modulo == 0 ? nr_bytes : modulo) + padding; | |
153 | ||
764f1408 FCE |
154 | free_buffer = NULL; |
155 | free_length = bytes; | |
c906108c | 156 | |
764f1408 FCE |
157 | #ifdef HAVE_MMAP |
158 | /* Memory map or malloc(). */ | |
159 | if (mmap_next_fd >= 0) | |
160 | { | |
161 | /* Check that given file is big enough. */ | |
162 | struct stat s; | |
163 | int rc; | |
164 | ||
165 | /* Some kernels will SIGBUS the application if mmap'd file | |
166 | is not large enough. */ | |
167 | rc = fstat (mmap_next_fd, &s); | |
168 | if (rc < 0 || s.st_size < bytes) | |
169 | { | |
170 | sim_io_error (sd, | |
171 | "Error, cannot confirm that mmap file is large enough " | |
bf962092 | 172 | "(>= %ld bytes)\n", bytes); |
764f1408 FCE |
173 | } |
174 | ||
175 | free_buffer = mmap (0, bytes, PROT_READ|PROT_WRITE, MAP_SHARED, mmap_next_fd, 0); | |
176 | if (free_buffer == 0 || free_buffer == (char*)-1) /* MAP_FAILED */ | |
177 | { | |
178 | sim_io_error (sd, "Error, cannot mmap file (%s).\n", | |
179 | strerror(errno)); | |
180 | } | |
181 | } | |
182 | #endif | |
183 | ||
184 | /* Need heap allocation? */ | |
185 | if (free_buffer == NULL) | |
186 | { | |
187 | /* If filling with non-zero value, do not use clearing allocator. */ | |
188 | if (fill_byte_flag && fill_byte_value != 0) | |
189 | free_buffer = xmalloc (bytes); /* don't clear */ | |
190 | else | |
191 | free_buffer = zalloc (bytes); /* clear */ | |
192 | } | |
c906108c SS |
193 | |
194 | aligned_buffer = (char*) free_buffer + padding; | |
195 | ||
196 | sim_core_attach (sd, NULL, | |
197 | level, access_read_write_exec, space, | |
198 | addr, nr_bytes, modulo, NULL, aligned_buffer); | |
199 | ||
200 | fill_buffer = aligned_buffer; | |
201 | fill_length = (modulo == 0) ? nr_bytes : modulo; | |
202 | ||
203 | /* If we just used a clearing allocator, and are about to fill with | |
204 | zero, truncate the redundant fill operation. */ | |
205 | ||
206 | if (fill_byte_flag && fill_byte_value == 0) | |
207 | fill_length = 1; /* avoid boundary length=0 case */ | |
208 | } | |
209 | ||
210 | if (fill_byte_flag) | |
211 | { | |
212 | ASSERT (fill_buffer != 0); | |
213 | memset ((char*) fill_buffer, fill_byte_value, fill_length); | |
214 | } | |
215 | ||
216 | while ((*entry) != NULL) | |
217 | entry = &(*entry)->next; | |
218 | (*entry) = ZALLOC (sim_memopt); | |
219 | (*entry)->level = level; | |
220 | (*entry)->space = space; | |
221 | (*entry)->addr = addr; | |
222 | (*entry)->nr_bytes = nr_bytes; | |
223 | (*entry)->modulo = modulo; | |
224 | (*entry)->buffer = free_buffer; | |
225 | ||
764f1408 FCE |
226 | /* Record memory unmapping info. */ |
227 | if (mmap_next_fd >= 0) | |
228 | { | |
229 | (*entry)->munmap_length = free_length; | |
230 | close (mmap_next_fd); | |
231 | mmap_next_fd = -1; | |
232 | } | |
233 | else | |
234 | (*entry)->munmap_length = 0; | |
235 | ||
c906108c SS |
236 | return (*entry); |
237 | } | |
238 | ||
239 | static SIM_RC | |
240 | do_memopt_delete (SIM_DESC sd, | |
241 | int level, | |
242 | int space, | |
243 | address_word addr) | |
244 | { | |
245 | sim_memopt **entry = &STATE_MEMOPT (sd); | |
246 | sim_memopt *alias; | |
247 | while ((*entry) != NULL | |
248 | && ((*entry)->level != level | |
249 | || (*entry)->space != space | |
250 | || (*entry)->addr != addr)) | |
251 | entry = &(*entry)->next; | |
252 | if ((*entry) == NULL) | |
253 | { | |
254 | sim_io_eprintf (sd, "Memory at 0x%lx not found, not deleted\n", | |
255 | (long) addr); | |
256 | return SIM_RC_FAIL; | |
257 | } | |
258 | /* delete any buffer */ | |
259 | if ((*entry)->buffer != NULL) | |
764f1408 FCE |
260 | { |
261 | #ifdef HAVE_MUNMAP | |
262 | if ((*entry)->munmap_length > 0) | |
263 | munmap ((*entry)->buffer, (*entry)->munmap_length); | |
264 | else | |
265 | #endif | |
266 | zfree ((*entry)->buffer); | |
267 | } | |
268 | ||
c906108c SS |
269 | /* delete it and its aliases */ |
270 | alias = *entry; | |
271 | *entry = (*entry)->next; | |
272 | while (alias != NULL) | |
273 | { | |
274 | sim_memopt *dead = alias; | |
275 | alias = alias->alias; | |
276 | sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr); | |
277 | zfree (dead); | |
278 | } | |
279 | return SIM_RC_OK; | |
280 | } | |
281 | ||
282 | ||
283 | static char * | |
284 | parse_size (char *chp, | |
285 | address_word *nr_bytes, | |
286 | unsigned *modulo) | |
287 | { | |
f40f1a01 | 288 | /* <nr_bytes>[K|M|G] [ "%" <modulo> ] */ |
c906108c | 289 | *nr_bytes = strtoul (chp, &chp, 0); |
f40f1a01 | 290 | switch (*chp) |
c906108c | 291 | { |
f40f1a01 | 292 | case '%': |
c906108c | 293 | *modulo = strtoul (chp + 1, &chp, 0); |
f40f1a01 NC |
294 | break; |
295 | case 'g': case 'G': /* Gigabyte suffix. */ | |
296 | *nr_bytes <<= 10; | |
297 | /* Fall through. */ | |
298 | case 'm': case 'M': /* Megabyte suffix. */ | |
299 | *nr_bytes <<= 10; | |
300 | /* Fall through. */ | |
301 | case 'k': case 'K': /* Kilobyte suffix. */ | |
302 | *nr_bytes <<= 10; | |
303 | /* Check for a modulo specifier after the suffix. */ | |
304 | ++ chp; | |
305 | if (* chp == 'b' || * chp == 'B') | |
306 | ++ chp; | |
307 | if (* chp == '%') | |
308 | *modulo = strtoul (chp + 1, &chp, 0); | |
309 | break; | |
c906108c SS |
310 | } |
311 | return chp; | |
312 | } | |
313 | ||
314 | static char * | |
315 | parse_ulong_value (char *chp, | |
316 | unsigned long *value) | |
317 | { | |
318 | *value = strtoul (chp, &chp, 0); | |
319 | return chp; | |
320 | } | |
321 | ||
322 | static char * | |
323 | parse_addr (char *chp, | |
324 | int *level, | |
325 | int *space, | |
326 | address_word *addr) | |
327 | { | |
328 | /* [ <space> ": " ] <addr> [ "@" <level> ] */ | |
329 | *addr = (unsigned long) strtoul (chp, &chp, 0); | |
330 | if (*chp == ':') | |
331 | { | |
332 | *space = *addr; | |
333 | *addr = (unsigned long) strtoul (chp + 1, &chp, 0); | |
334 | } | |
335 | if (*chp == '@') | |
336 | { | |
337 | *level = strtoul (chp + 1, &chp, 0); | |
338 | } | |
339 | return chp; | |
340 | } | |
341 | ||
342 | ||
343 | static SIM_RC | |
344 | memory_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, | |
345 | char *arg, int is_command) | |
346 | { | |
347 | switch (opt) | |
348 | { | |
349 | ||
350 | case OPTION_MEMORY_DELETE: | |
351 | if (strcasecmp (arg, "all") == 0) | |
352 | { | |
353 | while (STATE_MEMOPT (sd) != NULL) | |
354 | do_memopt_delete (sd, | |
355 | STATE_MEMOPT (sd)->level, | |
356 | STATE_MEMOPT (sd)->space, | |
357 | STATE_MEMOPT (sd)->addr); | |
358 | return SIM_RC_OK; | |
359 | } | |
360 | else | |
361 | { | |
362 | int level = 0; | |
363 | int space = 0; | |
364 | address_word addr = 0; | |
365 | parse_addr (arg, &level, &space, &addr); | |
366 | return do_memopt_delete (sd, level, space, addr); | |
367 | } | |
368 | ||
369 | case OPTION_MEMORY_REGION: | |
370 | { | |
371 | char *chp = arg; | |
372 | int level = 0; | |
373 | int space = 0; | |
374 | address_word addr = 0; | |
375 | address_word nr_bytes = 0; | |
376 | unsigned modulo = 0; | |
377 | /* parse the arguments */ | |
378 | chp = parse_addr (chp, &level, &space, &addr); | |
379 | if (*chp != ',') | |
380 | { | |
381 | sim_io_eprintf (sd, "Missing size for memory-region\n"); | |
382 | return SIM_RC_FAIL; | |
383 | } | |
384 | chp = parse_size (chp + 1, &nr_bytes, &modulo); | |
385 | /* old style */ | |
386 | if (*chp == ',') | |
387 | modulo = strtoul (chp + 1, &chp, 0); | |
388 | /* try to attach/insert it */ | |
389 | do_memopt_add (sd, level, space, addr, nr_bytes, modulo, | |
390 | &STATE_MEMOPT (sd), NULL); | |
391 | return SIM_RC_OK; | |
392 | } | |
393 | ||
394 | case OPTION_MEMORY_ALIAS: | |
395 | { | |
396 | char *chp = arg; | |
397 | int level = 0; | |
398 | int space = 0; | |
399 | address_word addr = 0; | |
400 | address_word nr_bytes = 0; | |
401 | unsigned modulo = 0; | |
402 | sim_memopt *entry; | |
403 | /* parse the arguments */ | |
404 | chp = parse_addr (chp, &level, &space, &addr); | |
405 | if (*chp != ',') | |
406 | { | |
407 | sim_io_eprintf (sd, "Missing size for memory-region\n"); | |
408 | return SIM_RC_FAIL; | |
409 | } | |
410 | chp = parse_size (chp + 1, &nr_bytes, &modulo); | |
411 | /* try to attach/insert the main record */ | |
412 | entry = do_memopt_add (sd, level, space, addr, nr_bytes, modulo, | |
413 | &STATE_MEMOPT (sd), | |
414 | NULL); | |
415 | /* now attach all the aliases */ | |
416 | while (*chp == ',') | |
417 | { | |
418 | int a_level = level; | |
419 | int a_space = space; | |
420 | address_word a_addr = addr; | |
421 | chp = parse_addr (chp + 1, &a_level, &a_space, &a_addr); | |
422 | do_memopt_add (sd, a_level, a_space, a_addr, nr_bytes, modulo, | |
423 | &entry->alias, entry->buffer); | |
424 | } | |
425 | return SIM_RC_OK; | |
426 | } | |
427 | ||
428 | case OPTION_MEMORY_SIZE: | |
429 | { | |
430 | int level = 0; | |
431 | int space = 0; | |
432 | address_word addr = 0; | |
433 | address_word nr_bytes = 0; | |
434 | unsigned modulo = 0; | |
435 | /* parse the arguments */ | |
436 | parse_size (arg, &nr_bytes, &modulo); | |
437 | /* try to attach/insert it */ | |
438 | do_memopt_add (sd, level, space, addr, nr_bytes, modulo, | |
439 | &STATE_MEMOPT (sd), NULL); | |
440 | return SIM_RC_OK; | |
441 | } | |
442 | ||
443 | case OPTION_MEMORY_CLEAR: | |
444 | { | |
445 | fill_byte_value = (unsigned8) 0; | |
446 | fill_byte_flag = 1; | |
447 | return SIM_RC_OK; | |
448 | break; | |
449 | } | |
450 | ||
451 | case OPTION_MEMORY_FILL: | |
452 | { | |
453 | unsigned long fill_value; | |
454 | parse_ulong_value (arg, &fill_value); | |
455 | if (fill_value > 255) | |
456 | { | |
457 | sim_io_eprintf (sd, "Missing fill value between 0 and 255\n"); | |
458 | return SIM_RC_FAIL; | |
459 | } | |
460 | fill_byte_value = (unsigned8) fill_value; | |
461 | fill_byte_flag = 1; | |
462 | return SIM_RC_OK; | |
463 | break; | |
464 | } | |
465 | ||
764f1408 FCE |
466 | case OPTION_MEMORY_MAPFILE: |
467 | { | |
468 | if (mmap_next_fd >= 0) | |
469 | { | |
470 | sim_io_eprintf (sd, "Duplicate memory-mapfile option\n"); | |
471 | return SIM_RC_FAIL; | |
472 | } | |
473 | ||
474 | mmap_next_fd = open (arg, O_RDWR); | |
475 | if (mmap_next_fd < 0) | |
476 | { | |
477 | sim_io_eprintf (sd, "Cannot open file `%s': %s\n", | |
478 | arg, strerror(errno)); | |
479 | return SIM_RC_FAIL; | |
480 | } | |
481 | ||
482 | return SIM_RC_OK; | |
483 | } | |
484 | ||
c906108c SS |
485 | case OPTION_MEMORY_INFO: |
486 | { | |
487 | sim_memopt *entry; | |
488 | sim_io_printf (sd, "Memory maps:\n"); | |
489 | for (entry = STATE_MEMOPT (sd); entry != NULL; entry = entry->next) | |
490 | { | |
491 | sim_memopt *alias; | |
492 | sim_io_printf (sd, " memory"); | |
493 | if (entry->alias == NULL) | |
494 | sim_io_printf (sd, " region "); | |
495 | else | |
496 | sim_io_printf (sd, " alias "); | |
497 | if (entry->space != 0) | |
498 | sim_io_printf (sd, "0x%lx:", (long) entry->space); | |
499 | sim_io_printf (sd, "0x%08lx", (long) entry->addr); | |
500 | if (entry->level != 0) | |
501 | sim_io_printf (sd, "@0x%lx", (long) entry->level); | |
502 | sim_io_printf (sd, ",0x%lx", | |
503 | (long) entry->nr_bytes); | |
504 | if (entry->modulo != 0) | |
505 | sim_io_printf (sd, "%%0x%lx", (long) entry->modulo); | |
506 | for (alias = entry->alias; | |
507 | alias != NULL; | |
508 | alias = alias->next) | |
509 | { | |
510 | if (alias->space != 0) | |
511 | sim_io_printf (sd, "0x%lx:", (long) alias->space); | |
512 | sim_io_printf (sd, ",0x%08lx", (long) alias->addr); | |
513 | if (alias->level != 0) | |
514 | sim_io_printf (sd, "@0x%lx", (long) alias->level); | |
515 | } | |
516 | sim_io_printf (sd, "\n"); | |
517 | } | |
518 | return SIM_RC_OK; | |
519 | break; | |
520 | } | |
521 | ||
522 | default: | |
523 | sim_io_eprintf (sd, "Unknown memory option %d\n", opt); | |
524 | return SIM_RC_FAIL; | |
525 | ||
526 | } | |
527 | ||
528 | return SIM_RC_FAIL; | |
529 | } | |
530 | ||
531 | ||
532 | /* "memory" module install handler. | |
533 | ||
534 | This is called via sim_module_install to install the "memory" subsystem | |
535 | into the simulator. */ | |
536 | ||
537 | static MODULE_INIT_FN sim_memory_init; | |
538 | static MODULE_UNINSTALL_FN sim_memory_uninstall; | |
539 | ||
540 | SIM_RC | |
541 | sim_memopt_install (SIM_DESC sd) | |
542 | { | |
543 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
544 | sim_add_option_table (sd, NULL, memory_options); | |
545 | sim_module_add_uninstall_fn (sd, sim_memory_uninstall); | |
546 | sim_module_add_init_fn (sd, sim_memory_init); | |
547 | return SIM_RC_OK; | |
548 | } | |
549 | ||
550 | ||
551 | /* Uninstall the "memory" subsystem from the simulator. */ | |
552 | ||
553 | static void | |
554 | sim_memory_uninstall (SIM_DESC sd) | |
555 | { | |
556 | sim_memopt **entry = &STATE_MEMOPT (sd); | |
557 | sim_memopt *alias; | |
558 | ||
559 | while ((*entry) != NULL) | |
560 | { | |
561 | /* delete any buffer */ | |
562 | if ((*entry)->buffer != NULL) | |
764f1408 FCE |
563 | { |
564 | #ifdef HAVE_MUNMAP | |
565 | if ((*entry)->munmap_length > 0) | |
566 | munmap ((*entry)->buffer, (*entry)->munmap_length); | |
567 | else | |
568 | #endif | |
569 | zfree ((*entry)->buffer); | |
570 | } | |
c906108c SS |
571 | |
572 | /* delete it and its aliases */ | |
573 | alias = *entry; | |
7a292a7a SS |
574 | |
575 | /* next victim */ | |
576 | *entry = (*entry)->next; | |
577 | ||
c906108c SS |
578 | while (alias != NULL) |
579 | { | |
580 | sim_memopt *dead = alias; | |
581 | alias = alias->alias; | |
582 | sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr); | |
583 | zfree (dead); | |
584 | } | |
c906108c SS |
585 | } |
586 | } | |
587 | ||
588 | ||
589 | static SIM_RC | |
590 | sim_memory_init (SIM_DESC sd) | |
591 | { | |
764f1408 FCE |
592 | /* Reinitialize option modifier flags, in case they were left |
593 | over from a previous sim startup event. */ | |
594 | fill_byte_flag = 0; | |
595 | mmap_next_fd = -1; | |
596 | ||
c906108c SS |
597 | return SIM_RC_OK; |
598 | } |