Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Miscellaneous simulator utilities. |
e4d013fc | 2 | Copyright (C) 1997, 1998, 2007, 2008, 2009 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 SS |
19 | |
20 | #include "sim-main.h" | |
21 | #include "sim-assert.h" | |
22 | ||
23 | #ifdef HAVE_STDLIB_H | |
24 | #include <stdlib.h> | |
25 | #endif | |
26 | ||
27 | #ifdef HAVE_TIME_H | |
28 | #include <time.h> | |
29 | #endif | |
30 | ||
31 | #ifdef HAVE_SYS_TIME_H | |
32 | #include <sys/time.h> /* needed by sys/resource.h */ | |
33 | #endif | |
34 | ||
35 | #ifdef HAVE_SYS_RESOURCE_H | |
36 | #include <sys/resource.h> | |
37 | #endif | |
38 | ||
39 | #ifdef HAVE_STRING_H | |
40 | #include <string.h> | |
41 | #else | |
42 | #ifdef HAVE_STRINGS_H | |
43 | #include <strings.h> | |
44 | #endif | |
45 | #endif | |
46 | ||
47 | #include "libiberty.h" | |
48 | #include "bfd.h" | |
49 | #include "sim-utils.h" | |
50 | ||
51 | /* Global pointer to all state data. | |
52 | Set by sim_resume. */ | |
53 | struct sim_state *current_state; | |
54 | ||
982807ce | 55 | /* Allocate zero filled memory with xcalloc - xcalloc aborts if the |
c906108c SS |
56 | allocation fails. */ |
57 | ||
58 | void * | |
59 | zalloc (unsigned long size) | |
60 | { | |
982807ce | 61 | return xcalloc (1, size); |
c906108c SS |
62 | } |
63 | ||
64 | void | |
65 | zfree (void *data) | |
66 | { | |
67 | free (data); | |
68 | } | |
69 | ||
70 | /* Allocate a sim_state struct. */ | |
71 | ||
72 | SIM_DESC | |
73 | sim_state_alloc (SIM_OPEN_KIND kind, | |
74 | host_callback *callback) | |
75 | { | |
76 | SIM_DESC sd = ZALLOC (struct sim_state); | |
77 | ||
78 | STATE_MAGIC (sd) = SIM_MAGIC_NUMBER; | |
79 | STATE_CALLBACK (sd) = callback; | |
80 | STATE_OPEN_KIND (sd) = kind; | |
81 | ||
82 | #if 0 | |
83 | { | |
84 | int cpu_nr; | |
85 | ||
86 | /* Initialize the back link from the cpu struct to the state struct. */ | |
87 | /* ??? I can envision a design where the state struct contains an array | |
88 | of pointers to cpu structs, rather than an array of structs themselves. | |
89 | Implementing this is trickier as one may not know what to allocate until | |
90 | one has parsed the args. Parsing the args twice wouldn't be unreasonable, | |
91 | IMHO. If the state struct ever does contain an array of pointers then we | |
92 | can't do this here. | |
93 | ??? See also sim_post_argv_init*/ | |
94 | for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++) | |
95 | { | |
96 | CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd; | |
97 | CPU_INDEX (STATE_CPU (sd, cpu_nr)) = cpu_nr; | |
98 | } | |
99 | } | |
100 | #endif | |
101 | ||
102 | #ifdef SIM_STATE_INIT | |
103 | SIM_STATE_INIT (sd); | |
104 | #endif | |
105 | ||
106 | return sd; | |
107 | } | |
108 | ||
109 | /* Free a sim_state struct. */ | |
110 | ||
111 | void | |
112 | sim_state_free (SIM_DESC sd) | |
113 | { | |
114 | ASSERT (sd->base.magic == SIM_MAGIC_NUMBER); | |
115 | ||
116 | #ifdef SIM_STATE_FREE | |
117 | SIM_STATE_FREE (sd); | |
118 | #endif | |
119 | ||
120 | zfree (sd); | |
121 | } | |
122 | ||
123 | /* Return a pointer to the cpu data for CPU_NAME, or NULL if not found. */ | |
124 | ||
125 | sim_cpu * | |
126 | sim_cpu_lookup (SIM_DESC sd, const char *cpu_name) | |
127 | { | |
128 | int i; | |
129 | ||
130 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
131 | if (strcmp (cpu_name, CPU_NAME (STATE_CPU (sd, i))) == 0) | |
132 | return STATE_CPU (sd, i); | |
133 | return NULL; | |
134 | } | |
135 | ||
136 | /* Return the prefix to use for a CPU specific message (typically an | |
137 | error message). */ | |
138 | ||
139 | const char * | |
140 | sim_cpu_msg_prefix (sim_cpu *cpu) | |
141 | { | |
142 | #if MAX_NR_PROCESSORS == 1 | |
143 | return ""; | |
144 | #else | |
145 | static char *prefix; | |
146 | ||
147 | if (prefix == NULL) | |
148 | { | |
149 | int maxlen = 0; | |
150 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
151 | { | |
152 | int len = strlen (CPU_NAME (STATE_CPU (sd, i))); | |
153 | if (len > maxlen) | |
154 | maxlen = len; | |
155 | } | |
156 | prefix = (char *) xmalloc (maxlen + 5); | |
157 | } | |
158 | sprintf (prefix, "%s: ", CPU_NAME (cpu)); | |
159 | return prefix; | |
160 | #endif | |
161 | } | |
162 | ||
163 | /* Cover fn to sim_io_eprintf. */ | |
164 | ||
165 | void | |
166 | sim_io_eprintf_cpu (sim_cpu *cpu, const char *fmt, ...) | |
167 | { | |
168 | SIM_DESC sd = CPU_STATE (cpu); | |
169 | va_list ap; | |
170 | ||
171 | va_start (ap, fmt); | |
172 | sim_io_eprintf (sd, sim_cpu_msg_prefix (cpu)); | |
173 | sim_io_evprintf (sd, fmt, ap); | |
174 | va_end (ap); | |
175 | } | |
176 | ||
177 | /* Turn VALUE into a string with commas. */ | |
178 | ||
179 | char * | |
180 | sim_add_commas (char *buf, int sizeof_buf, unsigned long value) | |
181 | { | |
182 | int comma = 3; | |
183 | char *endbuf = buf + sizeof_buf - 1; | |
184 | ||
185 | *--endbuf = '\0'; | |
186 | do { | |
187 | if (comma-- == 0) | |
188 | { | |
189 | *--endbuf = ','; | |
190 | comma = 2; | |
191 | } | |
192 | ||
193 | *--endbuf = (value % 10) + '0'; | |
194 | } while ((value /= 10) != 0); | |
195 | ||
196 | return endbuf; | |
197 | } | |
198 | ||
199 | /* Analyze PROG_NAME/PROG_BFD and set these fields in the state struct: | |
200 | STATE_ARCHITECTURE, if not set already and can be determined from the bfd | |
201 | STATE_PROG_BFD | |
202 | STATE_START_ADDR | |
203 | STATE_TEXT_SECTION | |
204 | STATE_TEXT_START | |
205 | STATE_TEXT_END | |
206 | ||
207 | PROG_NAME is the file name of the executable or NULL. | |
208 | PROG_BFD is its bfd or NULL. | |
209 | ||
210 | If both PROG_NAME and PROG_BFD are NULL, this function returns immediately. | |
211 | If PROG_BFD is not NULL, PROG_NAME is ignored. | |
212 | ||
213 | Implicit inputs: STATE_MY_NAME(sd), STATE_TARGET(sd), | |
214 | STATE_ARCHITECTURE(sd). | |
215 | ||
216 | A new bfd is created so the app isn't required to keep its copy of the | |
217 | bfd open. */ | |
218 | ||
219 | SIM_RC | |
220 | sim_analyze_program (sd, prog_name, prog_bfd) | |
221 | SIM_DESC sd; | |
222 | char *prog_name; | |
223 | bfd *prog_bfd; | |
224 | { | |
225 | asection *s; | |
226 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
227 | ||
228 | if (prog_bfd != NULL) | |
229 | { | |
230 | if (prog_bfd == STATE_PROG_BFD (sd)) | |
231 | /* already analyzed */ | |
232 | return SIM_RC_OK; | |
233 | else | |
234 | /* duplicate needed, save the name of the file to be re-opened */ | |
235 | prog_name = bfd_get_filename (prog_bfd); | |
236 | } | |
237 | ||
238 | /* do we need to duplicate anything? */ | |
239 | if (prog_name == NULL) | |
240 | return SIM_RC_OK; | |
241 | ||
242 | /* open a new copy of the prog_bfd */ | |
243 | prog_bfd = bfd_openr (prog_name, STATE_TARGET (sd)); | |
244 | if (prog_bfd == NULL) | |
245 | { | |
246 | sim_io_eprintf (sd, "%s: can't open \"%s\": %s\n", | |
247 | STATE_MY_NAME (sd), | |
248 | prog_name, | |
249 | bfd_errmsg (bfd_get_error ())); | |
250 | return SIM_RC_FAIL; | |
251 | } | |
252 | if (!bfd_check_format (prog_bfd, bfd_object)) | |
253 | { | |
254 | sim_io_eprintf (sd, "%s: \"%s\" is not an object file: %s\n", | |
255 | STATE_MY_NAME (sd), | |
256 | prog_name, | |
257 | bfd_errmsg (bfd_get_error ())); | |
258 | bfd_close (prog_bfd); | |
259 | return SIM_RC_FAIL; | |
260 | } | |
261 | if (STATE_ARCHITECTURE (sd) != NULL) | |
262 | bfd_set_arch_info (prog_bfd, STATE_ARCHITECTURE (sd)); | |
263 | else | |
264 | { | |
265 | if (bfd_get_arch (prog_bfd) != bfd_arch_unknown | |
266 | && bfd_get_arch (prog_bfd) != bfd_arch_obscure) | |
267 | { | |
268 | STATE_ARCHITECTURE (sd) = bfd_get_arch_info (prog_bfd); | |
269 | } | |
270 | } | |
271 | ||
272 | /* update the sim structure */ | |
273 | if (STATE_PROG_BFD (sd) != NULL) | |
274 | bfd_close (STATE_PROG_BFD (sd)); | |
275 | STATE_PROG_BFD (sd) = prog_bfd; | |
276 | STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd); | |
277 | ||
278 | for (s = prog_bfd->sections; s; s = s->next) | |
279 | if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0) | |
280 | { | |
281 | STATE_TEXT_SECTION (sd) = s; | |
282 | STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s); | |
283 | STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s); | |
284 | break; | |
285 | } | |
286 | ||
2836ee25 FCE |
287 | bfd_cache_close (prog_bfd); |
288 | ||
c906108c SS |
289 | return SIM_RC_OK; |
290 | } | |
291 | \f | |
292 | /* Simulator timing support. */ | |
293 | ||
294 | /* Called before sim_elapsed_time_since to get a reference point. */ | |
295 | ||
296 | SIM_ELAPSED_TIME | |
297 | sim_elapsed_time_get () | |
298 | { | |
299 | #ifdef HAVE_GETRUSAGE | |
300 | struct rusage mytime; | |
301 | if (getrusage (RUSAGE_SELF, &mytime) == 0) | |
302 | return 1 + (SIM_ELAPSED_TIME) (((double) mytime.ru_utime.tv_sec * 1000) + (((double) mytime.ru_utime.tv_usec + 500) / 1000)); | |
303 | return 1; | |
304 | #else | |
305 | #ifdef HAVE_TIME | |
306 | return 1 + (SIM_ELAPSED_TIME) time ((time_t) 0); | |
307 | #else | |
308 | return 1; | |
309 | #endif | |
310 | #endif | |
311 | } | |
312 | ||
313 | /* Return the elapsed time in milliseconds since START. | |
6439295f | 314 | The actual time may be cpu usage (preferred) or wall clock. */ |
c906108c SS |
315 | |
316 | unsigned long | |
317 | sim_elapsed_time_since (start) | |
318 | SIM_ELAPSED_TIME start; | |
319 | { | |
320 | #ifdef HAVE_GETRUSAGE | |
321 | return sim_elapsed_time_get () - start; | |
322 | #else | |
323 | #ifdef HAVE_TIME | |
324 | return (sim_elapsed_time_get () - start) * 1000; | |
325 | #else | |
326 | return 0; | |
327 | #endif | |
328 | #endif | |
329 | } | |
330 | ||
331 | ||
332 | ||
333 | /* do_command but with printf style formatting of the arguments */ | |
334 | void | |
335 | sim_do_commandf (SIM_DESC sd, | |
336 | const char *fmt, | |
337 | ...) | |
338 | { | |
339 | va_list ap; | |
340 | char *buf; | |
341 | va_start (ap, fmt); | |
342 | vasprintf (&buf, fmt, ap); | |
343 | sim_do_command (sd, buf); | |
344 | va_end (ap); | |
345 | free (buf); | |
346 | } | |
347 | ||
348 | ||
349 | /* sim-basics.h defines a number of enumerations, convert each of them | |
350 | to a string representation */ | |
351 | const char * | |
352 | map_to_str (unsigned map) | |
353 | { | |
354 | switch (map) | |
355 | { | |
356 | case read_map: return "read"; | |
357 | case write_map: return "write"; | |
358 | case exec_map: return "exec"; | |
359 | case io_map: return "io"; | |
360 | default: | |
361 | { | |
362 | static char str[10]; | |
363 | sprintf (str, "(%ld)", (long) map); | |
364 | return str; | |
365 | } | |
366 | } | |
367 | } | |
368 | ||
369 | const char * | |
370 | access_to_str (unsigned access) | |
371 | { | |
372 | switch (access) | |
373 | { | |
374 | case access_invalid: return "invalid"; | |
375 | case access_read: return "read"; | |
376 | case access_write: return "write"; | |
377 | case access_exec: return "exec"; | |
378 | case access_io: return "io"; | |
379 | case access_read_write: return "read_write"; | |
380 | case access_read_exec: return "read_exec"; | |
381 | case access_write_exec: return "write_exec"; | |
382 | case access_read_write_exec: return "read_write_exec"; | |
383 | case access_read_io: return "read_io"; | |
384 | case access_write_io: return "write_io"; | |
385 | case access_read_write_io: return "read_write_io"; | |
386 | case access_exec_io: return "exec_io"; | |
387 | case access_read_exec_io: return "read_exec_io"; | |
388 | case access_write_exec_io: return "write_exec_io"; | |
389 | case access_read_write_exec_io: return "read_write_exec_io"; | |
390 | default: | |
391 | { | |
392 | static char str[10]; | |
393 | sprintf (str, "(%ld)", (long) access); | |
394 | return str; | |
395 | } | |
396 | } | |
397 | } | |
398 | ||
399 | const char * | |
400 | transfer_to_str (unsigned transfer) | |
401 | { | |
402 | switch (transfer) | |
403 | { | |
404 | case read_transfer: return "read"; | |
405 | case write_transfer: return "write"; | |
406 | default: return "(error)"; | |
407 | } | |
408 | } | |
409 | ||
410 |