Commit | Line | Data |
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80629b1b EZ |
1 | /* Memory attributes support, for GDB. |
2 | Copyright 2001 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
29e57380 C |
21 | #include "defs.h" |
22 | #include "command.h" | |
23 | #include "gdbcmd.h" | |
24 | #include "memattr.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "language.h" | |
28 | #include "gdb_string.h" | |
29 | ||
29e57380 C |
30 | const struct mem_attrib default_mem_attrib = |
31 | { | |
32 | MEM_RW, /* mode */ | |
33 | MEM_WIDTH_UNSPECIFIED, | |
34 | false, /* hwbreak */ | |
35 | false, /* cache */ | |
36 | false /* verify */ | |
37 | }; | |
38 | ||
39 | static struct mem_region *mem_region_chain = NULL; | |
f4d650ec | 40 | static int mem_number = 0; |
29e57380 C |
41 | |
42 | static struct mem_region * | |
43 | create_mem_region (CORE_ADDR lo, CORE_ADDR hi, | |
44 | const struct mem_attrib *attrib) | |
45 | { | |
3172dc30 | 46 | struct mem_region *n, *new; |
29e57380 | 47 | |
b6d1a1d5 AC |
48 | /* lo == hi is a useless empty region */ |
49 | if (lo >= hi) | |
29e57380 | 50 | { |
b6d1a1d5 | 51 | printf_unfiltered ("invalid memory region: low >= high\n"); |
29e57380 C |
52 | return NULL; |
53 | } | |
54 | ||
55 | n = mem_region_chain; | |
56 | while (n) | |
57 | { | |
58 | /* overlapping node */ | |
b6d1a1d5 AC |
59 | if ((lo >= n->lo && lo < n->hi) || |
60 | (hi > n->lo && hi <= n->hi)) | |
29e57380 C |
61 | { |
62 | printf_unfiltered ("overlapping memory region\n"); | |
63 | return NULL; | |
64 | } | |
2ed3d0b5 | 65 | n = n->next; |
29e57380 C |
66 | } |
67 | ||
68 | new = xmalloc (sizeof (struct mem_region)); | |
69 | new->lo = lo; | |
70 | new->hi = hi; | |
71 | new->number = ++mem_number; | |
b5de0fa7 | 72 | new->enabled_p = 1; |
29e57380 C |
73 | new->attrib = *attrib; |
74 | ||
75 | /* link in new node */ | |
76 | new->next = mem_region_chain; | |
77 | mem_region_chain = new; | |
78 | ||
79 | return new; | |
80 | } | |
81 | ||
82 | static void | |
83 | delete_mem_region (struct mem_region *m) | |
84 | { | |
f4d650ec | 85 | xfree (m); |
29e57380 C |
86 | } |
87 | ||
88 | /* | |
89 | * Look up the memory region cooresponding to ADDR. | |
90 | */ | |
91 | struct mem_region * | |
92 | lookup_mem_region (CORE_ADDR addr) | |
93 | { | |
94 | static struct mem_region region; | |
95 | struct mem_region *m; | |
96 | CORE_ADDR lo; | |
97 | CORE_ADDR hi; | |
98 | ||
99 | /* First we initialize LO and HI so that they describe the entire | |
100 | memory space. As we process the memory region chain, they are | |
101 | redefined to describe the minimal region containing ADDR. LO | |
102 | and HI are used in the case where no memory region is defined | |
103 | that contains ADDR. If a memory region is disabled, it is | |
104 | treated as if it does not exist. */ | |
105 | ||
106 | lo = (CORE_ADDR) 0; | |
107 | hi = (CORE_ADDR) ~ 0; | |
108 | ||
109 | for (m = mem_region_chain; m; m = m->next) | |
110 | { | |
b5de0fa7 | 111 | if (m->enabled_p == 1) |
29e57380 C |
112 | { |
113 | if (addr >= m->lo && addr < m->hi) | |
114 | return m; | |
115 | ||
116 | if (addr >= m->hi && lo < m->hi) | |
117 | lo = m->hi; | |
118 | ||
119 | if (addr <= m->lo && hi > m->lo) | |
120 | hi = m->lo; | |
121 | } | |
122 | } | |
123 | ||
124 | /* Because no region was found, we must cons up one based on what | |
125 | was learned above. */ | |
126 | region.lo = lo; | |
127 | region.hi = hi; | |
128 | region.attrib = default_mem_attrib; | |
129 | return ®ion; | |
130 | } | |
131 | \f | |
132 | ||
133 | static void | |
134 | mem_command (char *args, int from_tty) | |
135 | { | |
136 | CORE_ADDR lo, hi; | |
137 | char *tok; | |
138 | struct mem_attrib attrib; | |
139 | ||
140 | if (!args) | |
141 | error_no_arg ("No mem"); | |
142 | ||
143 | tok = strtok (args, " \t"); | |
144 | if (!tok) | |
145 | error ("no lo address"); | |
146 | lo = parse_and_eval_address (tok); | |
147 | ||
148 | tok = strtok (NULL, " \t"); | |
149 | if (!tok) | |
150 | error ("no hi address"); | |
151 | hi = parse_and_eval_address (tok); | |
152 | ||
153 | attrib = default_mem_attrib; | |
154 | while ((tok = strtok (NULL, " \t")) != NULL) | |
155 | { | |
156 | if (strcmp (tok, "rw") == 0) | |
157 | attrib.mode = MEM_RW; | |
158 | else if (strcmp (tok, "ro") == 0) | |
159 | attrib.mode = MEM_RO; | |
160 | else if (strcmp (tok, "wo") == 0) | |
161 | attrib.mode = MEM_WO; | |
162 | ||
163 | else if (strcmp (tok, "8") == 0) | |
164 | attrib.width = MEM_WIDTH_8; | |
165 | else if (strcmp (tok, "16") == 0) | |
166 | { | |
167 | if ((lo % 2 != 0) || (hi % 2 != 0)) | |
168 | error ("region bounds not 16 bit aligned"); | |
169 | attrib.width = MEM_WIDTH_16; | |
170 | } | |
171 | else if (strcmp (tok, "32") == 0) | |
172 | { | |
173 | if ((lo % 4 != 0) || (hi % 4 != 0)) | |
174 | error ("region bounds not 32 bit aligned"); | |
175 | attrib.width = MEM_WIDTH_32; | |
176 | } | |
177 | else if (strcmp (tok, "64") == 0) | |
178 | { | |
179 | if ((lo % 8 != 0) || (hi % 8 != 0)) | |
180 | error ("region bounds not 64 bit aligned"); | |
181 | attrib.width = MEM_WIDTH_64; | |
182 | } | |
183 | ||
184 | #if 0 | |
185 | else if (strcmp (tok, "hwbreak") == 0) | |
186 | attrib.hwbreak = true; | |
187 | else if (strcmp (tok, "swbreak") == 0) | |
188 | attrib.hwbreak = false; | |
189 | #endif | |
190 | ||
191 | else if (strcmp (tok, "cache") == 0) | |
192 | attrib.cache = true; | |
193 | else if (strcmp (tok, "nocache") == 0) | |
194 | attrib.cache = false; | |
195 | ||
196 | #if 0 | |
197 | else if (strcmp (tok, "verify") == 0) | |
198 | attrib.verify = true; | |
199 | else if (strcmp (tok, "noverify") == 0) | |
200 | attrib.verify = false; | |
201 | #endif | |
202 | ||
203 | else | |
204 | error ("unknown attribute: %s", tok); | |
205 | } | |
206 | ||
207 | create_mem_region (lo, hi, &attrib); | |
208 | } | |
209 | \f | |
210 | ||
211 | static void | |
212 | mem_info_command (char *args, int from_tty) | |
213 | { | |
214 | struct mem_region *m; | |
215 | struct mem_attrib *attrib; | |
216 | ||
217 | if (!mem_region_chain) | |
218 | { | |
219 | printf_unfiltered ("There are no memory regions defined.\n"); | |
220 | return; | |
221 | } | |
222 | ||
ab35b611 EZ |
223 | printf_filtered ("Num "); |
224 | printf_filtered ("Enb "); | |
225 | printf_filtered ("Low Addr "); | |
226 | if (TARGET_ADDR_BIT > 32) | |
227 | printf_filtered (" "); | |
228 | printf_filtered ("High Addr "); | |
229 | if (TARGET_ADDR_BIT > 32) | |
230 | printf_filtered (" "); | |
231 | printf_filtered ("Attrs "); | |
232 | printf_filtered ("\n"); | |
233 | ||
29e57380 C |
234 | for (m = mem_region_chain; m; m = m->next) |
235 | { | |
ab35b611 EZ |
236 | char *tmp; |
237 | printf_filtered ("%-3d %-3c\t", | |
29e57380 | 238 | m->number, |
b5de0fa7 | 239 | m->enabled_p ? 'y' : 'n'); |
ab35b611 EZ |
240 | if (TARGET_ADDR_BIT <= 32) |
241 | tmp = longest_local_hex_string_custom ((unsigned long) m->lo, "08l"); | |
242 | else | |
243 | tmp = longest_local_hex_string_custom ((unsigned long) m->lo, "016l"); | |
244 | ||
245 | printf_filtered ("%s ", tmp); | |
246 | ||
247 | if (TARGET_ADDR_BIT <= 32) | |
248 | tmp = longest_local_hex_string_custom ((unsigned long) m->hi, "08l"); | |
249 | else | |
250 | tmp = longest_local_hex_string_custom ((unsigned long) m->hi, "016l"); | |
251 | ||
252 | printf_filtered ("%s ", tmp); | |
29e57380 C |
253 | |
254 | /* Print a token for each attribute. | |
255 | ||
256 | * FIXME: Should we output a comma after each token? It may | |
257 | * make it easier for users to read, but we'd lose the ability | |
258 | * to cut-and-paste the list of attributes when defining a new | |
259 | * region. Perhaps that is not important. | |
260 | * | |
261 | * FIXME: If more attributes are added to GDB, the output may | |
262 | * become cluttered and difficult for users to read. At that | |
263 | * time, we may want to consider printing tokens only if they | |
264 | * are different from the default attribute. */ | |
265 | ||
266 | attrib = &m->attrib; | |
267 | switch (attrib->mode) | |
268 | { | |
269 | case MEM_RW: | |
270 | printf_filtered ("rw "); | |
271 | break; | |
272 | case MEM_RO: | |
273 | printf_filtered ("ro "); | |
274 | break; | |
275 | case MEM_WO: | |
276 | printf_filtered ("wo "); | |
277 | break; | |
278 | } | |
279 | ||
280 | switch (attrib->width) | |
281 | { | |
282 | case MEM_WIDTH_8: | |
283 | printf_filtered ("8 "); | |
284 | break; | |
285 | case MEM_WIDTH_16: | |
286 | printf_filtered ("16 "); | |
287 | break; | |
288 | case MEM_WIDTH_32: | |
289 | printf_filtered ("32 "); | |
290 | break; | |
291 | case MEM_WIDTH_64: | |
292 | printf_filtered ("64 "); | |
293 | break; | |
294 | case MEM_WIDTH_UNSPECIFIED: | |
295 | break; | |
296 | } | |
297 | ||
298 | #if 0 | |
299 | if (attrib->hwbreak) | |
300 | printf_filtered ("hwbreak"); | |
301 | else | |
302 | printf_filtered ("swbreak"); | |
303 | #endif | |
304 | ||
305 | if (attrib->cache) | |
306 | printf_filtered ("cache "); | |
307 | else | |
308 | printf_filtered ("nocache "); | |
309 | ||
310 | #if 0 | |
311 | if (attrib->verify) | |
312 | printf_filtered ("verify "); | |
313 | else | |
314 | printf_filtered ("noverify "); | |
315 | #endif | |
316 | ||
317 | printf_filtered ("\n"); | |
318 | ||
319 | gdb_flush (gdb_stdout); | |
320 | } | |
321 | } | |
322 | \f | |
323 | ||
324 | /* Enable the memory region number NUM. */ | |
325 | ||
326 | static void | |
327 | mem_enable (int num) | |
328 | { | |
329 | struct mem_region *m; | |
330 | ||
331 | for (m = mem_region_chain; m; m = m->next) | |
332 | if (m->number == num) | |
333 | { | |
b5de0fa7 | 334 | m->enabled_p = 1; |
29e57380 C |
335 | return; |
336 | } | |
337 | printf_unfiltered ("No memory region number %d.\n", num); | |
338 | } | |
339 | ||
340 | static void | |
341 | mem_enable_command (char *args, int from_tty) | |
342 | { | |
343 | char *p = args; | |
344 | char *p1; | |
345 | int num; | |
346 | struct mem_region *m; | |
347 | ||
348 | dcache_invalidate (target_dcache); | |
349 | ||
350 | if (p == 0) | |
351 | { | |
352 | for (m = mem_region_chain; m; m = m->next) | |
b5de0fa7 | 353 | m->enabled_p = 1; |
29e57380 C |
354 | } |
355 | else | |
356 | while (*p) | |
357 | { | |
358 | p1 = p; | |
359 | while (*p1 >= '0' && *p1 <= '9') | |
360 | p1++; | |
361 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
362 | error ("Arguments must be memory region numbers."); | |
363 | ||
364 | num = atoi (p); | |
365 | mem_enable (num); | |
366 | ||
367 | p = p1; | |
368 | while (*p == ' ' || *p == '\t') | |
369 | p++; | |
370 | } | |
371 | } | |
372 | \f | |
373 | ||
374 | /* Disable the memory region number NUM. */ | |
375 | ||
376 | static void | |
377 | mem_disable (int num) | |
378 | { | |
379 | struct mem_region *m; | |
380 | ||
381 | for (m = mem_region_chain; m; m = m->next) | |
382 | if (m->number == num) | |
383 | { | |
b5de0fa7 | 384 | m->enabled_p = 0; |
29e57380 C |
385 | return; |
386 | } | |
387 | printf_unfiltered ("No memory region number %d.\n", num); | |
388 | } | |
389 | ||
390 | static void | |
391 | mem_disable_command (char *args, int from_tty) | |
392 | { | |
393 | char *p = args; | |
394 | char *p1; | |
395 | int num; | |
396 | struct mem_region *m; | |
397 | ||
398 | dcache_invalidate (target_dcache); | |
399 | ||
400 | if (p == 0) | |
401 | { | |
402 | for (m = mem_region_chain; m; m = m->next) | |
b5de0fa7 | 403 | m->enabled_p = 0; |
29e57380 C |
404 | } |
405 | else | |
406 | while (*p) | |
407 | { | |
408 | p1 = p; | |
409 | while (*p1 >= '0' && *p1 <= '9') | |
410 | p1++; | |
411 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
412 | error ("Arguments must be memory region numbers."); | |
413 | ||
414 | num = atoi (p); | |
415 | mem_disable (num); | |
416 | ||
417 | p = p1; | |
418 | while (*p == ' ' || *p == '\t') | |
419 | p++; | |
420 | } | |
421 | } | |
422 | ||
423 | /* Clear memory region list */ | |
424 | ||
425 | static void | |
426 | mem_clear (void) | |
427 | { | |
428 | struct mem_region *m; | |
429 | ||
430 | while ((m = mem_region_chain) != 0) | |
431 | { | |
432 | mem_region_chain = m->next; | |
433 | delete_mem_region (m); | |
434 | } | |
435 | } | |
436 | ||
437 | /* Delete the memory region number NUM. */ | |
438 | ||
439 | static void | |
440 | mem_delete (int num) | |
441 | { | |
442 | struct mem_region *m1, *m; | |
443 | ||
444 | if (!mem_region_chain) | |
445 | { | |
446 | printf_unfiltered ("No memory region number %d.\n", num); | |
447 | return; | |
448 | } | |
449 | ||
450 | if (mem_region_chain->number == num) | |
451 | { | |
452 | m1 = mem_region_chain; | |
453 | mem_region_chain = m1->next; | |
454 | delete_mem_region (m1); | |
455 | } | |
456 | else | |
457 | for (m = mem_region_chain; m->next; m = m->next) | |
458 | { | |
459 | if (m->next->number == num) | |
460 | { | |
461 | m1 = m->next; | |
462 | m->next = m1->next; | |
463 | delete_mem_region (m1); | |
464 | break; | |
465 | } | |
466 | } | |
467 | } | |
468 | ||
469 | static void | |
470 | mem_delete_command (char *args, int from_tty) | |
471 | { | |
472 | char *p = args; | |
473 | char *p1; | |
474 | int num; | |
475 | ||
476 | dcache_invalidate (target_dcache); | |
477 | ||
478 | if (p == 0) | |
479 | { | |
480 | if (query ("Delete all memory regions? ")) | |
481 | mem_clear (); | |
482 | dont_repeat (); | |
483 | return; | |
484 | } | |
485 | ||
486 | while (*p) | |
487 | { | |
488 | p1 = p; | |
489 | while (*p1 >= '0' && *p1 <= '9') | |
490 | p1++; | |
491 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
492 | error ("Arguments must be memory region numbers."); | |
493 | ||
494 | num = atoi (p); | |
495 | mem_delete (num); | |
496 | ||
497 | p = p1; | |
498 | while (*p == ' ' || *p == '\t') | |
499 | p++; | |
500 | } | |
501 | ||
502 | dont_repeat (); | |
503 | } | |
504 | \f | |
505 | void | |
506 | _initialize_mem () | |
507 | { | |
508 | add_com ("mem", class_vars, mem_command, | |
ab35b611 | 509 | "Define attributes for memory region.\n\ |
f9ba0717 MS |
510 | Usage: mem <lo addr> <hi addr> [<mode> <width> <cache>], \n\ |
511 | where <mode> may be rw (read/write), ro (read-only) or wo (write-only), \n\ | |
512 | <width> may be 8, 16, 32, or 64, and \n\ | |
513 | <cache> may be cache or nocache"); | |
29e57380 C |
514 | |
515 | add_cmd ("mem", class_vars, mem_enable_command, | |
516 | "Enable memory region.\n\ | |
517 | Arguments are the code numbers of the memory regions to enable.\n\ | |
ab35b611 | 518 | Usage: enable mem <code number>\n\ |
29e57380 C |
519 | Do \"info mem\" to see current list of code numbers.", &enablelist); |
520 | ||
521 | add_cmd ("mem", class_vars, mem_disable_command, | |
522 | "Disable memory region.\n\ | |
523 | Arguments are the code numbers of the memory regions to disable.\n\ | |
ab35b611 | 524 | Usage: disable mem <code number>\n\ |
29e57380 C |
525 | Do \"info mem\" to see current list of code numbers.", &disablelist); |
526 | ||
527 | add_cmd ("mem", class_vars, mem_delete_command, | |
528 | "Delete memory region.\n\ | |
529 | Arguments are the code numbers of the memory regions to delete.\n\ | |
ab35b611 | 530 | Usage: delete mem <code number>\n\ |
29e57380 C |
531 | Do \"info mem\" to see current list of code numbers.", &deletelist); |
532 | ||
533 | add_info ("mem", mem_info_command, | |
534 | "Memory region attributes"); | |
535 | } |