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