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 | ||
30 | /* FIXME: While this conflicts with the enum defined in breakpoint.h, | |
31 | I used them to be consistant with how breakpoints, tracepoints, and | |
32 | displays are implemented. It doesn't lose now because breakpoint.h | |
33 | is not included. */ | |
34 | enum enable | |
35 | { | |
36 | disabled, | |
37 | enabled | |
38 | }; | |
39 | ||
40 | const struct mem_attrib default_mem_attrib = | |
41 | { | |
42 | MEM_RW, /* mode */ | |
43 | MEM_WIDTH_UNSPECIFIED, | |
44 | false, /* hwbreak */ | |
45 | false, /* cache */ | |
46 | false /* verify */ | |
47 | }; | |
48 | ||
49 | static struct mem_region *mem_region_chain = NULL; | |
f4d650ec | 50 | static int mem_number = 0; |
29e57380 C |
51 | |
52 | static struct mem_region * | |
53 | create_mem_region (CORE_ADDR lo, CORE_ADDR hi, | |
54 | const struct mem_attrib *attrib) | |
55 | { | |
3172dc30 | 56 | struct mem_region *n, *new; |
29e57380 C |
57 | |
58 | if (lo > hi) | |
59 | { | |
60 | printf_unfiltered ("invalid memory region\n"); | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | n = mem_region_chain; | |
65 | while (n) | |
66 | { | |
67 | /* overlapping node */ | |
68 | if ((lo >= n->lo && lo <= n->hi) || | |
69 | (hi >= n->lo && hi <= n->hi)) | |
70 | { | |
71 | printf_unfiltered ("overlapping memory region\n"); | |
72 | return NULL; | |
73 | } | |
2ed3d0b5 | 74 | n = n->next; |
29e57380 C |
75 | } |
76 | ||
77 | new = xmalloc (sizeof (struct mem_region)); | |
78 | new->lo = lo; | |
79 | new->hi = hi; | |
80 | new->number = ++mem_number; | |
81 | new->status = enabled; | |
82 | new->attrib = *attrib; | |
83 | ||
84 | /* link in new node */ | |
85 | new->next = mem_region_chain; | |
86 | mem_region_chain = new; | |
87 | ||
88 | return new; | |
89 | } | |
90 | ||
91 | static void | |
92 | delete_mem_region (struct mem_region *m) | |
93 | { | |
f4d650ec | 94 | xfree (m); |
29e57380 C |
95 | } |
96 | ||
97 | /* | |
98 | * Look up the memory region cooresponding to ADDR. | |
99 | */ | |
100 | struct mem_region * | |
101 | lookup_mem_region (CORE_ADDR addr) | |
102 | { | |
103 | static struct mem_region region; | |
104 | struct mem_region *m; | |
105 | CORE_ADDR lo; | |
106 | CORE_ADDR hi; | |
107 | ||
108 | /* First we initialize LO and HI so that they describe the entire | |
109 | memory space. As we process the memory region chain, they are | |
110 | redefined to describe the minimal region containing ADDR. LO | |
111 | and HI are used in the case where no memory region is defined | |
112 | that contains ADDR. If a memory region is disabled, it is | |
113 | treated as if it does not exist. */ | |
114 | ||
115 | lo = (CORE_ADDR) 0; | |
116 | hi = (CORE_ADDR) ~ 0; | |
117 | ||
118 | for (m = mem_region_chain; m; m = m->next) | |
119 | { | |
120 | if (m->status == enabled) | |
121 | { | |
122 | if (addr >= m->lo && addr < m->hi) | |
123 | return m; | |
124 | ||
125 | if (addr >= m->hi && lo < m->hi) | |
126 | lo = m->hi; | |
127 | ||
128 | if (addr <= m->lo && hi > m->lo) | |
129 | hi = m->lo; | |
130 | } | |
131 | } | |
132 | ||
133 | /* Because no region was found, we must cons up one based on what | |
134 | was learned above. */ | |
135 | region.lo = lo; | |
136 | region.hi = hi; | |
137 | region.attrib = default_mem_attrib; | |
138 | return ®ion; | |
139 | } | |
140 | \f | |
141 | ||
142 | static void | |
143 | mem_command (char *args, int from_tty) | |
144 | { | |
145 | CORE_ADDR lo, hi; | |
146 | char *tok; | |
147 | struct mem_attrib attrib; | |
148 | ||
149 | if (!args) | |
150 | error_no_arg ("No mem"); | |
151 | ||
152 | tok = strtok (args, " \t"); | |
153 | if (!tok) | |
154 | error ("no lo address"); | |
155 | lo = parse_and_eval_address (tok); | |
156 | ||
157 | tok = strtok (NULL, " \t"); | |
158 | if (!tok) | |
159 | error ("no hi address"); | |
160 | hi = parse_and_eval_address (tok); | |
161 | ||
162 | attrib = default_mem_attrib; | |
163 | while ((tok = strtok (NULL, " \t")) != NULL) | |
164 | { | |
165 | if (strcmp (tok, "rw") == 0) | |
166 | attrib.mode = MEM_RW; | |
167 | else if (strcmp (tok, "ro") == 0) | |
168 | attrib.mode = MEM_RO; | |
169 | else if (strcmp (tok, "wo") == 0) | |
170 | attrib.mode = MEM_WO; | |
171 | ||
172 | else if (strcmp (tok, "8") == 0) | |
173 | attrib.width = MEM_WIDTH_8; | |
174 | else if (strcmp (tok, "16") == 0) | |
175 | { | |
176 | if ((lo % 2 != 0) || (hi % 2 != 0)) | |
177 | error ("region bounds not 16 bit aligned"); | |
178 | attrib.width = MEM_WIDTH_16; | |
179 | } | |
180 | else if (strcmp (tok, "32") == 0) | |
181 | { | |
182 | if ((lo % 4 != 0) || (hi % 4 != 0)) | |
183 | error ("region bounds not 32 bit aligned"); | |
184 | attrib.width = MEM_WIDTH_32; | |
185 | } | |
186 | else if (strcmp (tok, "64") == 0) | |
187 | { | |
188 | if ((lo % 8 != 0) || (hi % 8 != 0)) | |
189 | error ("region bounds not 64 bit aligned"); | |
190 | attrib.width = MEM_WIDTH_64; | |
191 | } | |
192 | ||
193 | #if 0 | |
194 | else if (strcmp (tok, "hwbreak") == 0) | |
195 | attrib.hwbreak = true; | |
196 | else if (strcmp (tok, "swbreak") == 0) | |
197 | attrib.hwbreak = false; | |
198 | #endif | |
199 | ||
200 | else if (strcmp (tok, "cache") == 0) | |
201 | attrib.cache = true; | |
202 | else if (strcmp (tok, "nocache") == 0) | |
203 | attrib.cache = false; | |
204 | ||
205 | #if 0 | |
206 | else if (strcmp (tok, "verify") == 0) | |
207 | attrib.verify = true; | |
208 | else if (strcmp (tok, "noverify") == 0) | |
209 | attrib.verify = false; | |
210 | #endif | |
211 | ||
212 | else | |
213 | error ("unknown attribute: %s", tok); | |
214 | } | |
215 | ||
216 | create_mem_region (lo, hi, &attrib); | |
217 | } | |
218 | \f | |
219 | ||
220 | static void | |
221 | mem_info_command (char *args, int from_tty) | |
222 | { | |
223 | struct mem_region *m; | |
224 | struct mem_attrib *attrib; | |
225 | ||
226 | if (!mem_region_chain) | |
227 | { | |
228 | printf_unfiltered ("There are no memory regions defined.\n"); | |
229 | return; | |
230 | } | |
231 | ||
ab35b611 EZ |
232 | printf_filtered ("Num "); |
233 | printf_filtered ("Enb "); | |
234 | printf_filtered ("Low Addr "); | |
235 | if (TARGET_ADDR_BIT > 32) | |
236 | printf_filtered (" "); | |
237 | printf_filtered ("High Addr "); | |
238 | if (TARGET_ADDR_BIT > 32) | |
239 | printf_filtered (" "); | |
240 | printf_filtered ("Attrs "); | |
241 | printf_filtered ("\n"); | |
242 | ||
29e57380 C |
243 | for (m = mem_region_chain; m; m = m->next) |
244 | { | |
ab35b611 EZ |
245 | char *tmp; |
246 | printf_filtered ("%-3d %-3c\t", | |
29e57380 C |
247 | m->number, |
248 | m->status ? 'y' : 'n'); | |
ab35b611 EZ |
249 | if (TARGET_ADDR_BIT <= 32) |
250 | tmp = longest_local_hex_string_custom ((unsigned long) m->lo, "08l"); | |
251 | else | |
252 | tmp = longest_local_hex_string_custom ((unsigned long) m->lo, "016l"); | |
253 | ||
254 | printf_filtered ("%s ", tmp); | |
255 | ||
256 | if (TARGET_ADDR_BIT <= 32) | |
257 | tmp = longest_local_hex_string_custom ((unsigned long) m->hi, "08l"); | |
258 | else | |
259 | tmp = longest_local_hex_string_custom ((unsigned long) m->hi, "016l"); | |
260 | ||
261 | printf_filtered ("%s ", tmp); | |
29e57380 C |
262 | |
263 | /* Print a token for each attribute. | |
264 | ||
265 | * FIXME: Should we output a comma after each token? It may | |
266 | * make it easier for users to read, but we'd lose the ability | |
267 | * to cut-and-paste the list of attributes when defining a new | |
268 | * region. Perhaps that is not important. | |
269 | * | |
270 | * FIXME: If more attributes are added to GDB, the output may | |
271 | * become cluttered and difficult for users to read. At that | |
272 | * time, we may want to consider printing tokens only if they | |
273 | * are different from the default attribute. */ | |
274 | ||
275 | attrib = &m->attrib; | |
276 | switch (attrib->mode) | |
277 | { | |
278 | case MEM_RW: | |
279 | printf_filtered ("rw "); | |
280 | break; | |
281 | case MEM_RO: | |
282 | printf_filtered ("ro "); | |
283 | break; | |
284 | case MEM_WO: | |
285 | printf_filtered ("wo "); | |
286 | break; | |
287 | } | |
288 | ||
289 | switch (attrib->width) | |
290 | { | |
291 | case MEM_WIDTH_8: | |
292 | printf_filtered ("8 "); | |
293 | break; | |
294 | case MEM_WIDTH_16: | |
295 | printf_filtered ("16 "); | |
296 | break; | |
297 | case MEM_WIDTH_32: | |
298 | printf_filtered ("32 "); | |
299 | break; | |
300 | case MEM_WIDTH_64: | |
301 | printf_filtered ("64 "); | |
302 | break; | |
303 | case MEM_WIDTH_UNSPECIFIED: | |
304 | break; | |
305 | } | |
306 | ||
307 | #if 0 | |
308 | if (attrib->hwbreak) | |
309 | printf_filtered ("hwbreak"); | |
310 | else | |
311 | printf_filtered ("swbreak"); | |
312 | #endif | |
313 | ||
314 | if (attrib->cache) | |
315 | printf_filtered ("cache "); | |
316 | else | |
317 | printf_filtered ("nocache "); | |
318 | ||
319 | #if 0 | |
320 | if (attrib->verify) | |
321 | printf_filtered ("verify "); | |
322 | else | |
323 | printf_filtered ("noverify "); | |
324 | #endif | |
325 | ||
326 | printf_filtered ("\n"); | |
327 | ||
328 | gdb_flush (gdb_stdout); | |
329 | } | |
330 | } | |
331 | \f | |
332 | ||
333 | /* Enable the memory region number NUM. */ | |
334 | ||
335 | static void | |
336 | mem_enable (int num) | |
337 | { | |
338 | struct mem_region *m; | |
339 | ||
340 | for (m = mem_region_chain; m; m = m->next) | |
341 | if (m->number == num) | |
342 | { | |
343 | m->status = enabled; | |
344 | return; | |
345 | } | |
346 | printf_unfiltered ("No memory region number %d.\n", num); | |
347 | } | |
348 | ||
349 | static void | |
350 | mem_enable_command (char *args, int from_tty) | |
351 | { | |
352 | char *p = args; | |
353 | char *p1; | |
354 | int num; | |
355 | struct mem_region *m; | |
356 | ||
357 | dcache_invalidate (target_dcache); | |
358 | ||
359 | if (p == 0) | |
360 | { | |
361 | for (m = mem_region_chain; m; m = m->next) | |
362 | m->status = enabled; | |
363 | } | |
364 | else | |
365 | while (*p) | |
366 | { | |
367 | p1 = p; | |
368 | while (*p1 >= '0' && *p1 <= '9') | |
369 | p1++; | |
370 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
371 | error ("Arguments must be memory region numbers."); | |
372 | ||
373 | num = atoi (p); | |
374 | mem_enable (num); | |
375 | ||
376 | p = p1; | |
377 | while (*p == ' ' || *p == '\t') | |
378 | p++; | |
379 | } | |
380 | } | |
381 | \f | |
382 | ||
383 | /* Disable the memory region number NUM. */ | |
384 | ||
385 | static void | |
386 | mem_disable (int num) | |
387 | { | |
388 | struct mem_region *m; | |
389 | ||
390 | for (m = mem_region_chain; m; m = m->next) | |
391 | if (m->number == num) | |
392 | { | |
393 | m->status = disabled; | |
394 | return; | |
395 | } | |
396 | printf_unfiltered ("No memory region number %d.\n", num); | |
397 | } | |
398 | ||
399 | static void | |
400 | mem_disable_command (char *args, int from_tty) | |
401 | { | |
402 | char *p = args; | |
403 | char *p1; | |
404 | int num; | |
405 | struct mem_region *m; | |
406 | ||
407 | dcache_invalidate (target_dcache); | |
408 | ||
409 | if (p == 0) | |
410 | { | |
411 | for (m = mem_region_chain; m; m = m->next) | |
412 | m->status = disabled; | |
413 | } | |
414 | else | |
415 | while (*p) | |
416 | { | |
417 | p1 = p; | |
418 | while (*p1 >= '0' && *p1 <= '9') | |
419 | p1++; | |
420 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
421 | error ("Arguments must be memory region numbers."); | |
422 | ||
423 | num = atoi (p); | |
424 | mem_disable (num); | |
425 | ||
426 | p = p1; | |
427 | while (*p == ' ' || *p == '\t') | |
428 | p++; | |
429 | } | |
430 | } | |
431 | ||
432 | /* Clear memory region list */ | |
433 | ||
434 | static void | |
435 | mem_clear (void) | |
436 | { | |
437 | struct mem_region *m; | |
438 | ||
439 | while ((m = mem_region_chain) != 0) | |
440 | { | |
441 | mem_region_chain = m->next; | |
442 | delete_mem_region (m); | |
443 | } | |
444 | } | |
445 | ||
446 | /* Delete the memory region number NUM. */ | |
447 | ||
448 | static void | |
449 | mem_delete (int num) | |
450 | { | |
451 | struct mem_region *m1, *m; | |
452 | ||
453 | if (!mem_region_chain) | |
454 | { | |
455 | printf_unfiltered ("No memory region number %d.\n", num); | |
456 | return; | |
457 | } | |
458 | ||
459 | if (mem_region_chain->number == num) | |
460 | { | |
461 | m1 = mem_region_chain; | |
462 | mem_region_chain = m1->next; | |
463 | delete_mem_region (m1); | |
464 | } | |
465 | else | |
466 | for (m = mem_region_chain; m->next; m = m->next) | |
467 | { | |
468 | if (m->next->number == num) | |
469 | { | |
470 | m1 = m->next; | |
471 | m->next = m1->next; | |
472 | delete_mem_region (m1); | |
473 | break; | |
474 | } | |
475 | } | |
476 | } | |
477 | ||
478 | static void | |
479 | mem_delete_command (char *args, int from_tty) | |
480 | { | |
481 | char *p = args; | |
482 | char *p1; | |
483 | int num; | |
484 | ||
485 | dcache_invalidate (target_dcache); | |
486 | ||
487 | if (p == 0) | |
488 | { | |
489 | if (query ("Delete all memory regions? ")) | |
490 | mem_clear (); | |
491 | dont_repeat (); | |
492 | return; | |
493 | } | |
494 | ||
495 | while (*p) | |
496 | { | |
497 | p1 = p; | |
498 | while (*p1 >= '0' && *p1 <= '9') | |
499 | p1++; | |
500 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
501 | error ("Arguments must be memory region numbers."); | |
502 | ||
503 | num = atoi (p); | |
504 | mem_delete (num); | |
505 | ||
506 | p = p1; | |
507 | while (*p == ' ' || *p == '\t') | |
508 | p++; | |
509 | } | |
510 | ||
511 | dont_repeat (); | |
512 | } | |
513 | \f | |
514 | void | |
515 | _initialize_mem () | |
516 | { | |
517 | add_com ("mem", class_vars, mem_command, | |
ab35b611 EZ |
518 | "Define attributes for memory region.\n\ |
519 | Usage: mem <lo addr> <hi addr> [<mode> <width> <cache>]"); | |
29e57380 C |
520 | |
521 | add_cmd ("mem", class_vars, mem_enable_command, | |
522 | "Enable memory region.\n\ | |
523 | Arguments are the code numbers of the memory regions to enable.\n\ | |
ab35b611 | 524 | Usage: enable mem <code number>\n\ |
29e57380 C |
525 | Do \"info mem\" to see current list of code numbers.", &enablelist); |
526 | ||
527 | add_cmd ("mem", class_vars, mem_disable_command, | |
528 | "Disable memory region.\n\ | |
529 | Arguments are the code numbers of the memory regions to disable.\n\ | |
ab35b611 | 530 | Usage: disable mem <code number>\n\ |
29e57380 C |
531 | Do \"info mem\" to see current list of code numbers.", &disablelist); |
532 | ||
533 | add_cmd ("mem", class_vars, mem_delete_command, | |
534 | "Delete memory region.\n\ | |
535 | Arguments are the code numbers of the memory regions to delete.\n\ | |
ab35b611 | 536 | Usage: delete mem <code number>\n\ |
29e57380 C |
537 | Do \"info mem\" to see current list of code numbers.", &deletelist); |
538 | ||
539 | add_info ("mem", mem_info_command, | |
540 | "Memory region attributes"); | |
541 | } |