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c906108c SS |
1 | /* Low level interface for debugging Solaris threads for GDB, the GNU debugger. |
2 | Copyright 1996, 1997, 1998 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, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | /* This module implements a sort of half target that sits between the | |
21 | machine-independent parts of GDB and the /proc interface (procfs.c) to | |
22 | provide access to the Solaris user-mode thread implementation. | |
23 | ||
24 | Solaris threads are true user-mode threads, which are invoked via the thr_* | |
25 | and pthread_* (native and Posix respectivly) interfaces. These are mostly | |
26 | implemented in user-space, with all thread context kept in various | |
27 | structures that live in the user's heap. These should not be confused with | |
28 | lightweight processes (LWPs), which are implemented by the kernel, and | |
29 | scheduled without explicit intervention by the process. | |
30 | ||
31 | Just to confuse things a little, Solaris threads (both native and Posix) are | |
32 | actually implemented using LWPs. In general, there are going to be more | |
33 | threads than LWPs. There is no fixed correspondence between a thread and an | |
34 | LWP. When a thread wants to run, it gets scheduled onto the first available | |
35 | LWP and can therefore migrate from one LWP to another as time goes on. A | |
36 | sleeping thread may not be associated with an LWP at all! | |
37 | ||
38 | To make it possible to mess with threads, Sun provides a library called | |
39 | libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't | |
40 | have a published interface). This interface has an upper part, which it | |
41 | provides, and a lower part which I provide. The upper part consists of the | |
42 | td_* routines, which allow me to find all the threads, query their state, | |
43 | etc... The lower part consists of all of the ps_*, which are used by the | |
44 | td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc... | |
45 | The ps_* routines actually do most of their work by calling functions in | |
46 | procfs.c. */ | |
47 | ||
48 | #include "defs.h" | |
49 | #include <thread.h> | |
50 | #include <proc_service.h> | |
51 | #include <thread_db.h> | |
52 | #include "gdbthread.h" | |
53 | #include "target.h" | |
54 | #include "inferior.h" | |
55 | #include <fcntl.h> | |
56 | #include <unistd.h> | |
57 | #include <sys/stat.h> | |
58 | #include <dlfcn.h> | |
59 | #include "gdbcmd.h" | |
60 | ||
61 | extern struct target_ops sol_thread_ops; /* Forward declaration */ | |
62 | extern struct target_ops sol_core_ops; /* Forward declaration */ | |
63 | ||
64 | /* place to store core_ops before we overwrite it */ | |
65 | static struct target_ops orig_core_ops; | |
66 | ||
67 | struct target_ops sol_thread_ops; | |
68 | struct target_ops sol_core_ops; | |
69 | ||
70 | extern int procfs_suppress_run; | |
71 | extern struct target_ops procfs_ops; /* target vector for procfs.c */ | |
72 | extern struct target_ops core_ops; /* target vector for corelow.c */ | |
73 | extern char *procfs_pid_to_str PARAMS ((int pid)); | |
74 | ||
75 | /* Note that these prototypes differ slightly from those used in procfs.c | |
76 | for of two reasons. One, we can't use gregset_t, as that's got a whole | |
77 | different meaning under Solaris (also, see above). Two, we can't use the | |
78 | pointer form here as these are actually arrays of ints (for Sparc's at | |
79 | least), and are automatically coerced into pointers to ints when used as | |
80 | parameters. That makes it impossible to avoid a compiler warning when | |
81 | passing pr{g fp}regset_t's from a parameter to an argument of one of | |
82 | these functions. */ | |
83 | ||
84 | extern void supply_gregset PARAMS ((const prgregset_t)); | |
85 | extern void fill_gregset PARAMS ((prgregset_t, int)); | |
86 | extern void supply_fpregset PARAMS ((const prfpregset_t *)); | |
87 | extern void fill_fpregset PARAMS ((prfpregset_t *, int)); | |
88 | ||
89 | /* This struct is defined by us, but mainly used for the proc_service interface. | |
90 | We don't have much use for it, except as a handy place to get a real pid | |
91 | for memory accesses. */ | |
92 | ||
93 | struct ps_prochandle | |
94 | { | |
95 | pid_t pid; | |
96 | }; | |
97 | ||
98 | struct string_map | |
99 | { | |
100 | int num; | |
101 | char *str; | |
102 | }; | |
103 | ||
104 | static struct ps_prochandle main_ph; | |
105 | static td_thragent_t *main_ta; | |
106 | static int sol_thread_active = 0; | |
107 | ||
108 | static struct cleanup * save_inferior_pid PARAMS ((void)); | |
109 | static void restore_inferior_pid PARAMS ((int pid)); | |
110 | static char *td_err_string PARAMS ((td_err_e errcode)); | |
111 | static char *td_state_string PARAMS ((td_thr_state_e statecode)); | |
112 | static int thread_to_lwp PARAMS ((int thread_id, int default_lwp)); | |
113 | static void sol_thread_resume PARAMS ((int pid, int step, | |
114 | enum target_signal signo)); | |
115 | static int lwp_to_thread PARAMS ((int lwp)); | |
116 | static int sol_thread_alive PARAMS ((int pid)); | |
117 | static void sol_core_close PARAMS ((int quitting)); | |
118 | ||
119 | static void init_sol_thread_ops PARAMS ((void)); | |
120 | static void init_sol_core_ops PARAMS ((void)); | |
121 | ||
122 | #define THREAD_FLAG 0x80000000 | |
123 | #define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0) | |
124 | #define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0) | |
125 | #define GET_LWP(LWP_ID) (TIDGET(LWP_ID)) | |
126 | #define GET_THREAD(THREAD_ID) (((THREAD_ID) >> 16) & 0x7fff) | |
127 | #define BUILD_LWP(LWP_ID, PID) ((LWP_ID) << 16 | (PID)) | |
128 | #define BUILD_THREAD(THREAD_ID, PID) (THREAD_FLAG | BUILD_LWP (THREAD_ID, PID)) | |
129 | ||
130 | /* Pointers to routines from lithread_db resolved by dlopen() */ | |
131 | ||
132 | static void | |
133 | (*p_td_log) (const int on_off); | |
134 | static td_err_e | |
135 | (*p_td_ta_new) (const struct ps_prochandle *ph_p, td_thragent_t **ta_pp); | |
136 | static td_err_e | |
137 | (*p_td_ta_delete) (td_thragent_t *ta_p); | |
138 | static td_err_e | |
139 | (*p_td_init) (void); | |
140 | static td_err_e | |
141 | (*p_td_ta_get_ph) (const td_thragent_t *ta_p, struct ps_prochandle **ph_pp); | |
142 | static td_err_e | |
143 | (*p_td_ta_get_nthreads) (const td_thragent_t *ta_p, int *nthread_p); | |
144 | static td_err_e | |
145 | (*p_td_ta_tsd_iter) (const td_thragent_t *ta_p, td_key_iter_f *cb, void *cbdata_p); | |
146 | static td_err_e | |
147 | (*p_td_ta_thr_iter) (const td_thragent_t *ta_p, td_thr_iter_f *cb, void *cbdata_p, td_thr_state_e state, | |
148 | int ti_pri, sigset_t *ti_sigmask_p, unsigned ti_user_flags); | |
149 | static td_err_e | |
150 | (*p_td_thr_validate) (const td_thrhandle_t *th_p); | |
151 | static td_err_e | |
152 | (*p_td_thr_tsd) (const td_thrhandle_t *th_p, const thread_key_t key, void **data_pp); | |
153 | static td_err_e | |
154 | (*p_td_thr_get_info) (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p); | |
155 | static td_err_e | |
156 | (*p_td_thr_getfpregs) (const td_thrhandle_t *th_p, prfpregset_t *fpregset); | |
157 | static td_err_e | |
158 | (*p_td_thr_getxregsize) (const td_thrhandle_t *th_p, int *xregsize); | |
159 | static td_err_e | |
160 | (*p_td_thr_getxregs) (const td_thrhandle_t *th_p, const caddr_t xregset); | |
161 | static td_err_e | |
162 | (*p_td_thr_sigsetmask) (const td_thrhandle_t *th_p, const sigset_t ti_sigmask); | |
163 | static td_err_e | |
164 | (*p_td_thr_setprio) (const td_thrhandle_t *th_p, const int ti_pri); | |
165 | static td_err_e | |
166 | (*p_td_thr_setsigpending) (const td_thrhandle_t *th_p, const uchar_t ti_pending_flag, const sigset_t ti_pending); | |
167 | static td_err_e | |
168 | (*p_td_thr_setfpregs) (const td_thrhandle_t *th_p, const prfpregset_t *fpregset); | |
169 | static td_err_e | |
170 | (*p_td_thr_setxregs) (const td_thrhandle_t *th_p, const caddr_t xregset); | |
171 | static td_err_e | |
172 | (*p_td_ta_map_id2thr) (const td_thragent_t *ta_p, thread_t tid, td_thrhandle_t *th_p); | |
173 | static td_err_e | |
174 | (*p_td_ta_map_lwp2thr) (const td_thragent_t *ta_p, lwpid_t lwpid, td_thrhandle_t *th_p); | |
175 | static td_err_e | |
176 | (*p_td_thr_getgregs) (const td_thrhandle_t *th_p, prgregset_t regset); | |
177 | static td_err_e | |
178 | (*p_td_thr_setgregs) (const td_thrhandle_t *th_p, const prgregset_t regset); | |
179 | \f | |
180 | /* | |
181 | ||
182 | LOCAL FUNCTION | |
183 | ||
184 | td_err_string - Convert a thread_db error code to a string | |
185 | ||
186 | SYNOPSIS | |
187 | ||
188 | char * td_err_string (errcode) | |
189 | ||
190 | DESCRIPTION | |
191 | ||
192 | Return the thread_db error string associated with errcode. If errcode | |
193 | is unknown, then return a message. | |
194 | ||
195 | */ | |
196 | ||
197 | static char * | |
198 | td_err_string (errcode) | |
199 | td_err_e errcode; | |
200 | { | |
201 | static struct string_map | |
202 | td_err_table[] = { | |
203 | {TD_OK, "generic \"call succeeded\""}, | |
204 | {TD_ERR, "generic error."}, | |
205 | {TD_NOTHR, "no thread can be found to satisfy query"}, | |
206 | {TD_NOSV, "no synch. variable can be found to satisfy query"}, | |
207 | {TD_NOLWP, "no lwp can be found to satisfy query"}, | |
208 | {TD_BADPH, "invalid process handle"}, | |
209 | {TD_BADTH, "invalid thread handle"}, | |
210 | {TD_BADSH, "invalid synchronization handle"}, | |
211 | {TD_BADTA, "invalid thread agent"}, | |
212 | {TD_BADKEY, "invalid key"}, | |
213 | {TD_NOMSG, "td_thr_event_getmsg() called when there was no message"}, | |
214 | {TD_NOFPREGS, "FPU register set not available for given thread"}, | |
215 | {TD_NOLIBTHREAD, "application not linked with libthread"}, | |
216 | {TD_NOEVENT, "requested event is not supported"}, | |
217 | {TD_NOCAPAB, "capability not available"}, | |
218 | {TD_DBERR, "Debugger service failed"}, | |
219 | {TD_NOAPLIC, "Operation not applicable to"}, | |
220 | {TD_NOTSD, "No thread specific data for this thread"}, | |
221 | {TD_MALLOC, "Malloc failed"}, | |
222 | {TD_PARTIALREG, "Only part of register set was writen/read"}, | |
223 | {TD_NOXREGS, "X register set not available for given thread"} | |
224 | }; | |
225 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); | |
226 | int i; | |
227 | static char buf[50]; | |
228 | ||
229 | for (i = 0; i < td_err_size; i++) | |
230 | if (td_err_table[i].num == errcode) | |
231 | return td_err_table[i].str; | |
232 | ||
233 | sprintf (buf, "Unknown thread_db error code: %d", errcode); | |
234 | ||
235 | return buf; | |
236 | } | |
237 | \f | |
238 | /* | |
239 | ||
240 | LOCAL FUNCTION | |
241 | ||
242 | td_state_string - Convert a thread_db state code to a string | |
243 | ||
244 | SYNOPSIS | |
245 | ||
246 | char * td_state_string (statecode) | |
247 | ||
248 | DESCRIPTION | |
249 | ||
250 | Return the thread_db state string associated with statecode. If | |
251 | statecode is unknown, then return a message. | |
252 | ||
253 | */ | |
254 | ||
255 | static char * | |
256 | td_state_string (statecode) | |
257 | td_thr_state_e statecode; | |
258 | { | |
259 | static struct string_map | |
260 | td_thr_state_table[] = { | |
261 | {TD_THR_ANY_STATE, "any state"}, | |
262 | {TD_THR_UNKNOWN, "unknown"}, | |
263 | {TD_THR_STOPPED, "stopped"}, | |
264 | {TD_THR_RUN, "run"}, | |
265 | {TD_THR_ACTIVE, "active"}, | |
266 | {TD_THR_ZOMBIE, "zombie"}, | |
267 | {TD_THR_SLEEP, "sleep"}, | |
268 | {TD_THR_STOPPED_ASLEEP, "stopped asleep"} | |
269 | }; | |
270 | const int td_thr_state_table_size = sizeof td_thr_state_table / sizeof (struct string_map); | |
271 | int i; | |
272 | static char buf[50]; | |
273 | ||
274 | for (i = 0; i < td_thr_state_table_size; i++) | |
275 | if (td_thr_state_table[i].num == statecode) | |
276 | return td_thr_state_table[i].str; | |
277 | ||
278 | sprintf (buf, "Unknown thread_db state code: %d", statecode); | |
279 | ||
280 | return buf; | |
281 | } | |
282 | \f | |
283 | /* | |
284 | ||
285 | LOCAL FUNCTION | |
286 | ||
287 | thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id. | |
288 | ||
289 | SYNOPSIS | |
290 | ||
291 | int thread_to_lwp (thread_id, default_lwp) | |
292 | ||
293 | DESCRIPTION | |
294 | ||
295 | This function converts a Posix or Solaris thread id to a lightweight | |
296 | process id. If thread_id is non-existent, that's an error. If it's | |
297 | an inactive thread, then we return default_lwp. | |
298 | ||
299 | NOTES | |
300 | ||
301 | This function probably shouldn't call error()... | |
302 | ||
303 | */ | |
304 | ||
305 | static int | |
306 | thread_to_lwp (thread_id, default_lwp) | |
307 | int thread_id; | |
308 | int default_lwp; | |
309 | { | |
310 | td_thrinfo_t ti; | |
311 | td_thrhandle_t th; | |
312 | td_err_e val; | |
313 | ||
314 | if (is_lwp (thread_id)) | |
315 | return thread_id; /* It's already an LWP id */ | |
316 | ||
317 | /* It's a thread. Convert to lwp */ | |
318 | ||
319 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); | |
320 | if (val == TD_NOTHR) | |
321 | return -1; /* thread must have terminated */ | |
322 | else if (val != TD_OK) | |
323 | error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val)); | |
324 | ||
325 | val = p_td_thr_get_info (&th, &ti); | |
326 | if (val == TD_NOTHR) | |
327 | return -1; /* thread must have terminated */ | |
328 | else if (val != TD_OK) | |
329 | error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val)); | |
330 | ||
331 | if (ti.ti_state != TD_THR_ACTIVE) | |
332 | { | |
333 | if (default_lwp != -1) | |
334 | return default_lwp; | |
335 | error ("thread_to_lwp: thread state not active: %s", | |
336 | td_state_string (ti.ti_state)); | |
337 | } | |
338 | ||
339 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); | |
340 | } | |
341 | \f | |
342 | /* | |
343 | ||
344 | LOCAL FUNCTION | |
345 | ||
346 | lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id. | |
347 | ||
348 | SYNOPSIS | |
349 | ||
350 | int lwp_to_thread (lwp_id) | |
351 | ||
352 | DESCRIPTION | |
353 | ||
354 | This function converts a lightweight process id to a Posix or Solaris | |
355 | thread id. If thread_id is non-existent, that's an error. | |
356 | ||
357 | NOTES | |
358 | ||
359 | This function probably shouldn't call error()... | |
360 | ||
361 | */ | |
362 | ||
363 | static int | |
364 | lwp_to_thread (lwp) | |
365 | int lwp; | |
366 | { | |
367 | td_thrinfo_t ti; | |
368 | td_thrhandle_t th; | |
369 | td_err_e val; | |
370 | ||
371 | if (is_thread (lwp)) | |
372 | return lwp; /* It's already a thread id */ | |
373 | ||
374 | /* It's an lwp. Convert it to a thread id. */ | |
375 | ||
376 | if (!sol_thread_alive (lwp)) | |
377 | return -1; /* defunct lwp */ | |
378 | ||
379 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); | |
380 | if (val == TD_NOTHR) | |
381 | return -1; /* thread must have terminated */ | |
382 | else if (val != TD_OK) | |
383 | error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val)); | |
384 | ||
385 | val = p_td_thr_validate (&th); | |
386 | if (val == TD_NOTHR) | |
387 | return lwp; /* libthread doesn't know about it, just return lwp */ | |
388 | else if (val != TD_OK) | |
389 | error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val)); | |
390 | ||
391 | val = p_td_thr_get_info (&th, &ti); | |
392 | if (val == TD_NOTHR) | |
393 | return -1; /* thread must have terminated */ | |
394 | else if (val != TD_OK) | |
395 | error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val)); | |
396 | ||
397 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); | |
398 | } | |
399 | \f | |
400 | /* | |
401 | ||
402 | LOCAL FUNCTION | |
403 | ||
404 | save_inferior_pid - Save inferior_pid on the cleanup list | |
405 | restore_inferior_pid - Restore inferior_pid from the cleanup list | |
406 | ||
407 | SYNOPSIS | |
408 | ||
409 | struct cleanup *save_inferior_pid () | |
410 | void restore_inferior_pid (int pid) | |
411 | ||
412 | DESCRIPTION | |
413 | ||
414 | These two functions act in unison to restore inferior_pid in | |
415 | case of an error. | |
416 | ||
417 | NOTES | |
418 | ||
419 | inferior_pid is a global variable that needs to be changed by many of | |
420 | these routines before calling functions in procfs.c. In order to | |
421 | guarantee that inferior_pid gets restored (in case of errors), you | |
422 | need to call save_inferior_pid before changing it. At the end of the | |
423 | function, you should invoke do_cleanups to restore it. | |
424 | ||
425 | */ | |
426 | ||
427 | ||
428 | static struct cleanup * | |
429 | save_inferior_pid () | |
430 | { | |
431 | return make_cleanup (restore_inferior_pid, inferior_pid); | |
432 | } | |
433 | ||
434 | static void | |
435 | restore_inferior_pid (pid) | |
436 | int pid; | |
437 | { | |
438 | inferior_pid = pid; | |
439 | } | |
440 | \f | |
441 | ||
442 | /* Most target vector functions from here on actually just pass through to | |
443 | procfs.c, as they don't need to do anything specific for threads. */ | |
444 | ||
445 | ||
446 | /* ARGSUSED */ | |
447 | static void | |
448 | sol_thread_open (arg, from_tty) | |
449 | char *arg; | |
450 | int from_tty; | |
451 | { | |
452 | procfs_ops.to_open (arg, from_tty); | |
453 | } | |
454 | ||
455 | /* Attach to process PID, then initialize for debugging it | |
456 | and wait for the trace-trap that results from attaching. */ | |
457 | ||
458 | static void | |
459 | sol_thread_attach (args, from_tty) | |
460 | char *args; | |
461 | int from_tty; | |
462 | { | |
463 | procfs_ops.to_attach (args, from_tty); | |
464 | /* Must get symbols from solibs before libthread_db can run! */ | |
465 | SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0); | |
466 | if (sol_thread_active) | |
467 | { | |
468 | printf_filtered ("sol-thread active.\n"); | |
469 | main_ph.pid = inferior_pid; /* Save for xfer_memory */ | |
470 | push_target (&sol_thread_ops); | |
471 | inferior_pid = lwp_to_thread (inferior_pid); | |
472 | if (inferior_pid == -1) | |
473 | inferior_pid = main_ph.pid; | |
474 | else | |
475 | add_thread (inferior_pid); | |
476 | } | |
477 | /* XXX - might want to iterate over all the threads and register them. */ | |
478 | } | |
479 | ||
480 | /* Take a program previously attached to and detaches it. | |
481 | The program resumes execution and will no longer stop | |
482 | on signals, etc. We'd better not have left any breakpoints | |
483 | in the program or it'll die when it hits one. For this | |
484 | to work, it may be necessary for the process to have been | |
485 | previously attached. It *might* work if the program was | |
486 | started via the normal ptrace (PTRACE_TRACEME). */ | |
487 | ||
488 | static void | |
489 | sol_thread_detach (args, from_tty) | |
490 | char *args; | |
491 | int from_tty; | |
492 | { | |
493 | unpush_target (&sol_thread_ops); | |
494 | procfs_ops.to_detach (args, from_tty); | |
495 | } | |
496 | ||
497 | /* Resume execution of process PID. If STEP is nozero, then | |
498 | just single step it. If SIGNAL is nonzero, restart it with that | |
499 | signal activated. We may have to convert pid from a thread-id to an LWP id | |
500 | for procfs. */ | |
501 | ||
502 | static void | |
503 | sol_thread_resume (pid, step, signo) | |
504 | int pid; | |
505 | int step; | |
506 | enum target_signal signo; | |
507 | { | |
508 | struct cleanup *old_chain; | |
509 | ||
510 | old_chain = save_inferior_pid (); | |
511 | ||
512 | inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); | |
513 | if (inferior_pid == -1) | |
514 | inferior_pid = procfs_first_available (); | |
515 | ||
516 | if (pid != -1) | |
517 | { | |
518 | int save_pid = pid; | |
519 | ||
520 | pid = thread_to_lwp (pid, -2); | |
521 | if (pid == -2) /* Inactive thread */ | |
522 | error ("This version of Solaris can't start inactive threads."); | |
523 | if (info_verbose && pid == -1) | |
524 | warning ("Specified thread %d seems to have terminated", | |
525 | GET_THREAD (save_pid)); | |
526 | } | |
527 | ||
528 | procfs_ops.to_resume (pid, step, signo); | |
529 | ||
530 | do_cleanups (old_chain); | |
531 | } | |
532 | ||
533 | /* Wait for any threads to stop. We may have to convert PID from a thread id | |
534 | to a LWP id, and vice versa on the way out. */ | |
535 | ||
536 | static int | |
537 | sol_thread_wait (pid, ourstatus) | |
538 | int pid; | |
539 | struct target_waitstatus *ourstatus; | |
540 | { | |
541 | int rtnval; | |
542 | int save_pid; | |
543 | struct cleanup *old_chain; | |
544 | ||
545 | save_pid = inferior_pid; | |
546 | old_chain = save_inferior_pid (); | |
547 | ||
548 | inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); | |
549 | if (inferior_pid == -1) | |
550 | inferior_pid = procfs_first_available (); | |
551 | ||
552 | if (pid != -1) | |
553 | { | |
554 | int save_pid = pid; | |
555 | ||
556 | pid = thread_to_lwp (pid, -2); | |
557 | if (pid == -2) /* Inactive thread */ | |
558 | error ("This version of Solaris can't start inactive threads."); | |
559 | if (info_verbose && pid == -1) | |
560 | warning ("Specified thread %d seems to have terminated", | |
561 | GET_THREAD (save_pid)); | |
562 | } | |
563 | ||
564 | rtnval = procfs_ops.to_wait (pid, ourstatus); | |
565 | ||
566 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
567 | { | |
568 | /* Map the LWP of interest back to the appropriate thread ID */ | |
569 | rtnval = lwp_to_thread (rtnval); | |
570 | if (rtnval == -1) | |
571 | rtnval = save_pid; | |
572 | ||
573 | /* See if we have a new thread */ | |
574 | if (is_thread (rtnval) | |
575 | && rtnval != save_pid | |
576 | && !in_thread_list (rtnval)) | |
577 | { | |
578 | printf_filtered ("[New %s]\n", target_pid_to_str (rtnval)); | |
579 | add_thread (rtnval); | |
580 | } | |
581 | } | |
582 | ||
583 | /* During process initialization, we may get here without the thread package | |
584 | being initialized, since that can only happen after we've found the shared | |
585 | libs. */ | |
586 | ||
587 | do_cleanups (old_chain); | |
588 | ||
589 | return rtnval; | |
590 | } | |
591 | ||
592 | static void | |
593 | sol_thread_fetch_registers (regno) | |
594 | int regno; | |
595 | { | |
596 | thread_t thread; | |
597 | td_thrhandle_t thandle; | |
598 | td_err_e val; | |
599 | prgregset_t gregset; | |
600 | prfpregset_t fpregset; | |
601 | #if 0 | |
602 | int xregsize; | |
603 | caddr_t xregset; | |
604 | #endif | |
605 | ||
606 | if (!is_thread (inferior_pid)) | |
607 | { /* LWP: pass the request on to procfs.c */ | |
608 | if (target_has_execution) | |
609 | procfs_ops.to_fetch_registers (regno); | |
610 | else | |
611 | orig_core_ops.to_fetch_registers (regno); | |
612 | return; | |
613 | } | |
614 | ||
615 | /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ | |
616 | ||
617 | thread = GET_THREAD (inferior_pid); | |
618 | ||
619 | if (thread == 0) | |
620 | error ("sol_thread_fetch_registers: thread == 0"); | |
621 | ||
622 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
623 | if (val != TD_OK) | |
624 | error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s", | |
625 | td_err_string (val)); | |
626 | ||
627 | /* Get the integer regs */ | |
628 | ||
629 | val = p_td_thr_getgregs (&thandle, gregset); | |
630 | if (val != TD_OK | |
631 | && val != TD_PARTIALREG) | |
632 | error ("sol_thread_fetch_registers: td_thr_getgregs %s", | |
633 | td_err_string (val)); | |
634 | ||
635 | /* For the sparc, TD_PARTIALREG means that only i0->i7, l0->l7, pc and sp | |
636 | are saved (by a thread context switch). */ | |
637 | ||
638 | /* And, now the fp regs */ | |
639 | ||
640 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
641 | if (val != TD_OK | |
642 | && val != TD_NOFPREGS) | |
643 | error ("sol_thread_fetch_registers: td_thr_getfpregs %s", | |
644 | td_err_string (val)); | |
645 | ||
646 | /* Note that we must call supply_{g fp}regset *after* calling the td routines | |
647 | because the td routines call ps_lget* which affect the values stored in the | |
648 | registers array. */ | |
649 | ||
650 | supply_gregset (gregset); | |
651 | supply_fpregset (&fpregset); | |
652 | ||
653 | #if 0 | |
654 | /* thread_db doesn't seem to handle this right */ | |
655 | val = td_thr_getxregsize (&thandle, &xregsize); | |
656 | if (val != TD_OK && val != TD_NOXREGS) | |
657 | error ("sol_thread_fetch_registers: td_thr_getxregsize %s", | |
658 | td_err_string (val)); | |
659 | ||
660 | if (val == TD_OK) | |
661 | { | |
662 | xregset = alloca (xregsize); | |
663 | val = td_thr_getxregs (&thandle, xregset); | |
664 | if (val != TD_OK) | |
665 | error ("sol_thread_fetch_registers: td_thr_getxregs %s", | |
666 | td_err_string (val)); | |
667 | } | |
668 | #endif | |
669 | } | |
670 | ||
671 | static void | |
672 | sol_thread_store_registers (regno) | |
673 | int regno; | |
674 | { | |
675 | thread_t thread; | |
676 | td_thrhandle_t thandle; | |
677 | td_err_e val; | |
678 | prgregset_t regset; | |
679 | prfpregset_t fpregset; | |
680 | #if 0 | |
681 | int xregsize; | |
682 | caddr_t xregset; | |
683 | #endif | |
684 | ||
685 | if (!is_thread (inferior_pid)) | |
686 | { /* LWP: pass the request on to procfs.c */ | |
687 | procfs_ops.to_store_registers (regno); | |
688 | return; | |
689 | } | |
690 | ||
691 | /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ | |
692 | ||
693 | thread = GET_THREAD (inferior_pid); | |
694 | ||
695 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
696 | if (val != TD_OK) | |
697 | error ("sol_thread_store_registers: td_ta_map_id2thr %s", | |
698 | td_err_string (val)); | |
699 | ||
700 | if (regno != -1) | |
701 | { /* Not writing all the regs */ | |
702 | /* save new register value */ | |
703 | char old_value[REGISTER_SIZE]; | |
704 | memcpy(old_value, & registers[REGISTER_BYTE(regno)], REGISTER_SIZE); | |
705 | ||
706 | val = p_td_thr_getgregs (&thandle, regset); | |
707 | if (val != TD_OK) | |
708 | error ("sol_thread_store_registers: td_thr_getgregs %s", | |
709 | td_err_string (val)); | |
710 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
711 | if (val != TD_OK) | |
712 | error ("sol_thread_store_registers: td_thr_getfpregs %s", | |
713 | td_err_string (val)); | |
714 | ||
715 | /* restore new register value */ | |
716 | memcpy(& registers[REGISTER_BYTE(regno)], old_value, REGISTER_SIZE); | |
717 | ||
718 | #if 0 | |
719 | /* thread_db doesn't seem to handle this right */ | |
720 | val = td_thr_getxregsize (&thandle, &xregsize); | |
721 | if (val != TD_OK && val != TD_NOXREGS) | |
722 | error ("sol_thread_store_registers: td_thr_getxregsize %s", | |
723 | td_err_string (val)); | |
724 | ||
725 | if (val == TD_OK) | |
726 | { | |
727 | xregset = alloca (xregsize); | |
728 | val = td_thr_getxregs (&thandle, xregset); | |
729 | if (val != TD_OK) | |
730 | error ("sol_thread_store_registers: td_thr_getxregs %s", | |
731 | td_err_string (val)); | |
732 | } | |
733 | #endif | |
734 | } | |
735 | ||
736 | fill_gregset (regset, regno); | |
737 | fill_fpregset (&fpregset, regno); | |
738 | ||
739 | val = p_td_thr_setgregs (&thandle, regset); | |
740 | if (val != TD_OK) | |
741 | error ("sol_thread_store_registers: td_thr_setgregs %s", | |
742 | td_err_string (val)); | |
743 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
744 | if (val != TD_OK) | |
745 | error ("sol_thread_store_registers: td_thr_setfpregs %s", | |
746 | td_err_string (val)); | |
747 | ||
748 | #if 0 | |
749 | /* thread_db doesn't seem to handle this right */ | |
750 | val = td_thr_getxregsize (&thandle, &xregsize); | |
751 | if (val != TD_OK && val != TD_NOXREGS) | |
752 | error ("sol_thread_store_registers: td_thr_getxregsize %s", | |
753 | td_err_string (val)); | |
754 | ||
755 | /* Should probably do something about writing the xregs here, but what are | |
756 | they? */ | |
757 | #endif | |
758 | } | |
759 | ||
760 | /* Get ready to modify the registers array. On machines which store | |
761 | individual registers, this doesn't need to do anything. On machines | |
762 | which store all the registers in one fell swoop, this makes sure | |
763 | that registers contains all the registers from the program being | |
764 | debugged. */ | |
765 | ||
766 | static void | |
767 | sol_thread_prepare_to_store () | |
768 | { | |
769 | procfs_ops.to_prepare_to_store (); | |
770 | } | |
771 | ||
772 | static int | |
773 | sol_thread_xfer_memory (memaddr, myaddr, len, dowrite, target) | |
774 | CORE_ADDR memaddr; | |
775 | char *myaddr; | |
776 | int len; | |
777 | int dowrite; | |
778 | struct target_ops *target; /* ignored */ | |
779 | { | |
780 | int retval; | |
781 | struct cleanup *old_chain; | |
782 | ||
783 | old_chain = save_inferior_pid (); | |
784 | ||
785 | if (is_thread (inferior_pid) || /* A thread */ | |
786 | !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ | |
787 | inferior_pid = procfs_first_available (); /* Find any live lwp. */ | |
788 | /* Note: don't need to call switch_to_thread; we're just reading memory. */ | |
789 | ||
790 | if (target_has_execution) | |
791 | retval = procfs_ops.to_xfer_memory (memaddr, myaddr, len, dowrite, target); | |
792 | else | |
793 | retval = orig_core_ops.to_xfer_memory (memaddr, myaddr, len, | |
794 | dowrite, target); | |
795 | ||
796 | do_cleanups (old_chain); | |
797 | ||
798 | return retval; | |
799 | } | |
800 | ||
801 | /* Print status information about what we're accessing. */ | |
802 | ||
803 | static void | |
804 | sol_thread_files_info (ignore) | |
805 | struct target_ops *ignore; | |
806 | { | |
807 | procfs_ops.to_files_info (ignore); | |
808 | } | |
809 | ||
810 | static void | |
811 | sol_thread_kill_inferior () | |
812 | { | |
813 | procfs_ops.to_kill (); | |
814 | } | |
815 | ||
816 | static void | |
817 | sol_thread_notice_signals (pid) | |
818 | int pid; | |
819 | { | |
820 | procfs_ops.to_notice_signals (PIDGET (pid)); | |
821 | } | |
822 | ||
823 | /* Fork an inferior process, and start debugging it with /proc. */ | |
824 | ||
825 | static void | |
826 | sol_thread_create_inferior (exec_file, allargs, env) | |
827 | char *exec_file; | |
828 | char *allargs; | |
829 | char **env; | |
830 | { | |
831 | procfs_ops.to_create_inferior (exec_file, allargs, env); | |
832 | ||
833 | if (sol_thread_active && inferior_pid != 0) | |
834 | { | |
835 | main_ph.pid = inferior_pid; /* Save for xfer_memory */ | |
836 | ||
837 | push_target (&sol_thread_ops); | |
838 | ||
839 | inferior_pid = lwp_to_thread (inferior_pid); | |
840 | if (inferior_pid == -1) | |
841 | inferior_pid = main_ph.pid; | |
842 | ||
843 | add_thread (inferior_pid); | |
844 | } | |
845 | } | |
846 | ||
847 | /* This routine is called whenever a new symbol table is read in, or when all | |
848 | symbol tables are removed. libthread_db can only be initialized when it | |
849 | finds the right variables in libthread.so. Since it's a shared library, | |
850 | those variables don't show up until the library gets mapped and the symbol | |
851 | table is read in. */ | |
852 | ||
853 | void | |
854 | sol_thread_new_objfile (objfile) | |
855 | struct objfile *objfile; | |
856 | { | |
857 | td_err_e val; | |
858 | ||
859 | if (!objfile) | |
860 | { | |
861 | sol_thread_active = 0; | |
862 | ||
863 | return; | |
864 | } | |
865 | ||
866 | /* don't do anything if init failed to resolve the libthread_db library */ | |
867 | if (!procfs_suppress_run) | |
868 | return; | |
869 | ||
870 | /* Now, initialize the thread debugging library. This needs to be done after | |
871 | the shared libraries are located because it needs information from the | |
872 | user's thread library. */ | |
873 | ||
874 | val = p_td_init (); | |
875 | if (val != TD_OK) | |
876 | error ("target_new_objfile: td_init: %s", td_err_string (val)); | |
877 | ||
878 | val = p_td_ta_new (&main_ph, &main_ta); | |
879 | if (val == TD_NOLIBTHREAD) | |
880 | return; | |
881 | else if (val != TD_OK) | |
882 | error ("target_new_objfile: td_ta_new: %s", td_err_string (val)); | |
883 | ||
884 | sol_thread_active = 1; | |
885 | } | |
886 | ||
887 | /* Clean up after the inferior dies. */ | |
888 | ||
889 | static void | |
890 | sol_thread_mourn_inferior () | |
891 | { | |
892 | unpush_target (&sol_thread_ops); | |
893 | procfs_ops.to_mourn_inferior (); | |
894 | } | |
895 | ||
896 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ | |
897 | ||
898 | static int | |
899 | sol_thread_can_run () | |
900 | { | |
901 | return procfs_suppress_run; | |
902 | } | |
903 | ||
904 | /* | |
905 | ||
906 | LOCAL FUNCTION | |
907 | ||
908 | sol_thread_alive - test thread for "aliveness" | |
909 | ||
910 | SYNOPSIS | |
911 | ||
912 | static bool sol_thread_alive (int pid); | |
913 | ||
914 | DESCRIPTION | |
915 | ||
916 | returns true if thread still active in inferior. | |
917 | ||
918 | */ | |
919 | ||
920 | static int | |
921 | sol_thread_alive (pid) | |
922 | int pid; | |
923 | { | |
924 | if (is_thread (pid)) /* non-kernel thread */ | |
925 | { | |
926 | td_err_e val; | |
927 | td_thrhandle_t th; | |
928 | ||
929 | pid = GET_THREAD (pid); | |
930 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) | |
931 | return 0; /* thread not found */ | |
932 | if ((val = p_td_thr_validate (&th)) != TD_OK) | |
933 | return 0; /* thread not valid */ | |
934 | return 1; /* known thread: return true */ | |
935 | } | |
936 | else /* kernel thread (LWP): let procfs test it */ | |
937 | { | |
938 | if (target_has_execution) | |
939 | return procfs_ops.to_thread_alive (pid); | |
940 | else | |
941 | return orig_core_ops.to_thread_alive (pid); | |
942 | } | |
943 | } | |
944 | ||
945 | static void | |
946 | sol_thread_stop () | |
947 | { | |
948 | procfs_ops.to_stop (); | |
949 | } | |
950 | \f | |
951 | /* These routines implement the lower half of the thread_db interface. Ie: the | |
952 | ps_* routines. */ | |
953 | ||
954 | /* Various versions of <proc_service.h> have slightly | |
955 | different function prototypes. In particular, we have | |
956 | ||
957 | NEWER OLDER | |
958 | struct ps_prochandle * const struct ps_prochandle * | |
959 | void* char* | |
960 | const void* char* | |
961 | int size_t | |
962 | ||
963 | Which one you have depends on solaris version and what | |
964 | patches you've applied. On the theory that there are | |
965 | only two major variants, we have configure check the | |
966 | prototype of ps_pdwrite (), and use that info to make | |
967 | appropriate typedefs here. */ | |
968 | ||
969 | #ifdef PROC_SERVICE_IS_OLD | |
970 | typedef const struct ps_prochandle * gdb_ps_prochandle_t; | |
971 | typedef char * gdb_ps_read_buf_t; | |
972 | typedef char * gdb_ps_write_buf_t; | |
973 | typedef int gdb_ps_size_t; | |
974 | #else | |
975 | typedef struct ps_prochandle * gdb_ps_prochandle_t; | |
976 | typedef void * gdb_ps_read_buf_t; | |
977 | typedef const void * gdb_ps_write_buf_t; | |
978 | typedef size_t gdb_ps_size_t; | |
979 | #endif | |
980 | ||
981 | ||
982 | /* The next four routines are called by thread_db to tell us to stop and stop | |
983 | a particular process or lwp. Since GDB ensures that these are all stopped | |
984 | by the time we call anything in thread_db, these routines need to do | |
985 | nothing. */ | |
986 | ||
987 | ps_err_e | |
988 | ps_pstop (gdb_ps_prochandle_t ph) | |
989 | { | |
990 | return PS_OK; | |
991 | } | |
992 | ||
993 | ps_err_e | |
994 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
995 | { | |
996 | return PS_OK; | |
997 | } | |
998 | ||
999 | ps_err_e | |
1000 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
1001 | { | |
1002 | return PS_OK; | |
1003 | } | |
1004 | ||
1005 | ps_err_e | |
1006 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
1007 | { | |
1008 | return PS_OK; | |
1009 | } | |
1010 | ||
1011 | ps_err_e | |
1012 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
1013 | const char *ld_symbol_name, paddr_t *ld_symbol_addr) | |
1014 | { | |
1015 | struct minimal_symbol *ms; | |
1016 | ||
1017 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
1018 | ||
1019 | if (!ms) | |
1020 | return PS_NOSYM; | |
1021 | ||
1022 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); | |
1023 | ||
1024 | return PS_OK; | |
1025 | } | |
1026 | ||
1027 | /* Common routine for reading and writing memory. */ | |
1028 | ||
1029 | static ps_err_e | |
1030 | rw_common (int dowrite, const struct ps_prochandle *ph, paddr_t addr, | |
1031 | char *buf, int size) | |
1032 | { | |
1033 | struct cleanup *old_chain; | |
1034 | ||
1035 | old_chain = save_inferior_pid (); | |
1036 | ||
1037 | if (is_thread (inferior_pid) || /* A thread */ | |
1038 | !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ | |
1039 | inferior_pid = procfs_first_available (); /* Find any live lwp. */ | |
1040 | /* Note: don't need to call switch_to_thread; we're just reading memory. */ | |
1041 | ||
1042 | while (size > 0) | |
1043 | { | |
1044 | int cc; | |
1045 | ||
1046 | if (target_has_execution) | |
1047 | cc = procfs_ops.to_xfer_memory (addr, buf, size, dowrite, &procfs_ops); | |
1048 | else | |
1049 | cc = orig_core_ops.to_xfer_memory (addr, buf, size, dowrite, &core_ops); | |
1050 | ||
1051 | if (cc < 0) | |
1052 | { | |
1053 | if (dowrite == 0) | |
1054 | print_sys_errmsg ("rw_common (): read", errno); | |
1055 | else | |
1056 | print_sys_errmsg ("rw_common (): write", errno); | |
1057 | ||
1058 | do_cleanups (old_chain); | |
1059 | ||
1060 | return PS_ERR; | |
1061 | } | |
1062 | size -= cc; | |
1063 | buf += cc; | |
1064 | } | |
1065 | ||
1066 | do_cleanups (old_chain); | |
1067 | ||
1068 | return PS_OK; | |
1069 | } | |
1070 | ||
1071 | ps_err_e | |
1072 | ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr, | |
1073 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) | |
1074 | { | |
1075 | return rw_common (0, ph, addr, buf, size); | |
1076 | } | |
1077 | ||
1078 | ps_err_e | |
1079 | ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr, | |
1080 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) | |
1081 | { | |
1082 | return rw_common (1, ph, addr, (char*) buf, size); | |
1083 | } | |
1084 | ||
1085 | ps_err_e | |
1086 | ps_ptread (gdb_ps_prochandle_t ph, paddr_t addr, | |
1087 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) | |
1088 | { | |
1089 | return rw_common (0, ph, addr, buf, size); | |
1090 | } | |
1091 | ||
1092 | ps_err_e | |
1093 | ps_ptwrite (gdb_ps_prochandle_t ph, paddr_t addr, | |
1094 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) | |
1095 | { | |
1096 | return rw_common (1, ph, addr, (char*) buf, size); | |
1097 | } | |
1098 | ||
1099 | /* Get integer regs */ | |
1100 | ||
1101 | ps_err_e | |
1102 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1103 | prgregset_t gregset) | |
1104 | { | |
1105 | struct cleanup *old_chain; | |
1106 | ||
1107 | old_chain = save_inferior_pid (); | |
1108 | ||
1109 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); | |
1110 | ||
1111 | if (target_has_execution) | |
1112 | procfs_ops.to_fetch_registers (-1); | |
1113 | else | |
1114 | orig_core_ops.to_fetch_registers (-1); | |
1115 | fill_gregset (gregset, -1); | |
1116 | ||
1117 | do_cleanups (old_chain); | |
1118 | ||
1119 | return PS_OK; | |
1120 | } | |
1121 | ||
1122 | /* Set integer regs */ | |
1123 | ||
1124 | ps_err_e | |
1125 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1126 | const prgregset_t gregset) | |
1127 | { | |
1128 | struct cleanup *old_chain; | |
1129 | ||
1130 | old_chain = save_inferior_pid (); | |
1131 | ||
1132 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); | |
1133 | ||
1134 | supply_gregset (gregset); | |
1135 | if (target_has_execution) | |
1136 | procfs_ops.to_store_registers (-1); | |
1137 | else | |
1138 | orig_core_ops.to_store_registers (-1); | |
1139 | ||
1140 | do_cleanups (old_chain); | |
1141 | ||
1142 | return PS_OK; | |
1143 | } | |
1144 | ||
1145 | void | |
1146 | ps_plog (const char *fmt, ...) | |
1147 | { | |
1148 | va_list args; | |
1149 | ||
1150 | va_start (args, fmt); | |
1151 | ||
1152 | vfprintf_filtered (gdb_stderr, fmt, args); | |
1153 | } | |
1154 | ||
1155 | /* Get size of extra register set. Currently a noop. */ | |
1156 | ||
1157 | ps_err_e | |
1158 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
1159 | { | |
1160 | #if 0 | |
1161 | int lwp_fd; | |
1162 | int regsize; | |
1163 | ps_err_e val; | |
1164 | ||
1165 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1166 | if (val != PS_OK) | |
1167 | return val; | |
1168 | ||
1169 | if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) | |
1170 | { | |
1171 | if (errno == EINVAL) | |
1172 | return PS_NOFREGS; /* XXX Wrong code, but this is the closest | |
1173 | thing in proc_service.h */ | |
1174 | ||
1175 | print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); | |
1176 | return PS_ERR; | |
1177 | } | |
1178 | #endif | |
1179 | ||
1180 | return PS_OK; | |
1181 | } | |
1182 | ||
1183 | /* Get extra register set. Currently a noop. */ | |
1184 | ||
1185 | ps_err_e | |
1186 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
1187 | { | |
1188 | #if 0 | |
1189 | int lwp_fd; | |
1190 | ps_err_e val; | |
1191 | ||
1192 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1193 | if (val != PS_OK) | |
1194 | return val; | |
1195 | ||
1196 | if (ioctl (lwp_fd, PIOCGXREG, xregset)) | |
1197 | { | |
1198 | print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); | |
1199 | return PS_ERR; | |
1200 | } | |
1201 | #endif | |
1202 | ||
1203 | return PS_OK; | |
1204 | } | |
1205 | ||
1206 | /* Set extra register set. Currently a noop. */ | |
1207 | ||
1208 | ps_err_e | |
1209 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
1210 | { | |
1211 | #if 0 | |
1212 | int lwp_fd; | |
1213 | ps_err_e val; | |
1214 | ||
1215 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1216 | if (val != PS_OK) | |
1217 | return val; | |
1218 | ||
1219 | if (ioctl (lwp_fd, PIOCSXREG, xregset)) | |
1220 | { | |
1221 | print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); | |
1222 | return PS_ERR; | |
1223 | } | |
1224 | #endif | |
1225 | ||
1226 | return PS_OK; | |
1227 | } | |
1228 | ||
1229 | /* Get floating-point regs. */ | |
1230 | ||
1231 | ps_err_e | |
1232 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1233 | prfpregset_t *fpregset) | |
1234 | { | |
1235 | struct cleanup *old_chain; | |
1236 | ||
1237 | old_chain = save_inferior_pid (); | |
1238 | ||
1239 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); | |
1240 | ||
1241 | if (target_has_execution) | |
1242 | procfs_ops.to_fetch_registers (-1); | |
1243 | else | |
1244 | orig_core_ops.to_fetch_registers (-1); | |
1245 | fill_fpregset (fpregset, -1); | |
1246 | ||
1247 | do_cleanups (old_chain); | |
1248 | ||
1249 | return PS_OK; | |
1250 | } | |
1251 | ||
1252 | /* Set floating-point regs. */ | |
1253 | ||
1254 | ps_err_e | |
1255 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1256 | const prfpregset_t *fpregset) | |
1257 | { | |
1258 | struct cleanup *old_chain; | |
1259 | ||
1260 | old_chain = save_inferior_pid (); | |
1261 | ||
1262 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); | |
1263 | ||
1264 | supply_fpregset (fpregset); | |
1265 | if (target_has_execution) | |
1266 | procfs_ops.to_store_registers (-1); | |
1267 | else | |
1268 | orig_core_ops.to_store_registers (-1); | |
1269 | ||
1270 | do_cleanups (old_chain); | |
1271 | ||
1272 | return PS_OK; | |
1273 | } | |
1274 | ||
1275 | #ifdef TM_I386SOL2_H | |
1276 | ||
1277 | /* Get local descriptor table. */ | |
1278 | ||
1279 | #include <sys/procfs.h> | |
1280 | #include <sys/reg.h> | |
1281 | #include <sys/sysi86.h> | |
1282 | ||
1283 | static int nldt_allocated = 0; | |
1284 | static struct ssd *ldt_bufp = NULL; | |
1285 | ||
1286 | ps_err_e | |
1287 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1288 | struct ssd *pldt) | |
1289 | { | |
1290 | gregset_t gregset; | |
1291 | int lwp_fd; | |
1292 | ps_err_e val; | |
1293 | int nldt; | |
1294 | int i; | |
1295 | ||
1296 | /* Get procfs file descriptor for the LWP. */ | |
1297 | lwp_fd = procfs_get_pid_fd (BUILD_LWP (lwpid, PIDGET (inferior_pid))); | |
1298 | if (lwp_fd < 0) | |
1299 | return PS_BADLID; | |
1300 | ||
1301 | /* Fetch registers und LDT descriptors. */ | |
1302 | if (ioctl (lwp_fd, PIOCGREG, &gregset) == -1) | |
1303 | return PS_ERR; | |
1304 | ||
1305 | if (ioctl (lwp_fd, PIOCNLDT, &nldt) == -1) | |
1306 | return PS_ERR; | |
1307 | ||
1308 | if (nldt_allocated < nldt) | |
1309 | { | |
1310 | ldt_bufp | |
1311 | = (struct ssd *) xrealloc (ldt_bufp, (nldt + 1) * sizeof (struct ssd)); | |
1312 | nldt_allocated = nldt; | |
1313 | } | |
1314 | ||
1315 | if (ioctl (lwp_fd, PIOCLDT, ldt_bufp) == -1) | |
1316 | return PS_ERR; | |
1317 | ||
1318 | /* Search LDT for the LWP via register GS. */ | |
1319 | for (i = 0; i < nldt; i++) | |
1320 | { | |
1321 | if (ldt_bufp[i].sel == (gregset[GS] & 0xffff)) | |
1322 | { | |
1323 | *pldt = ldt_bufp[i]; | |
1324 | return PS_OK; | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | /* LDT not found. */ | |
1329 | return PS_ERR; | |
1330 | } | |
1331 | #endif /* TM_I386SOL2_H */ | |
1332 | \f | |
1333 | /* Convert a pid to printable form. */ | |
1334 | ||
1335 | char * | |
1336 | solaris_pid_to_str (pid) | |
1337 | int pid; | |
1338 | { | |
1339 | static char buf[100]; | |
1340 | ||
1341 | /* in case init failed to resolve the libthread_db library */ | |
1342 | if (!procfs_suppress_run) | |
1343 | return procfs_pid_to_str (pid); | |
1344 | ||
1345 | if (is_thread (pid)) | |
1346 | { | |
1347 | int lwp; | |
1348 | ||
1349 | lwp = thread_to_lwp (pid, -2); | |
1350 | ||
1351 | if (lwp == -1) | |
1352 | sprintf (buf, "Thread %d (defunct)", GET_THREAD (pid)); | |
1353 | else if (lwp != -2) | |
1354 | sprintf (buf, "Thread %d (LWP %d)", GET_THREAD (pid), GET_LWP (lwp)); | |
1355 | else | |
1356 | sprintf (buf, "Thread %d ", GET_THREAD (pid)); | |
1357 | } | |
1358 | else if (GET_LWP (pid) != 0) | |
1359 | sprintf (buf, "LWP %d ", GET_LWP (pid)); | |
1360 | else | |
1361 | sprintf (buf, "process %d ", PIDGET (pid)); | |
1362 | ||
1363 | return buf; | |
1364 | } | |
1365 | \f | |
1366 | ||
1367 | /* Worker bee for find_new_threads | |
1368 | Callback function that gets called once per USER thread (i.e., not | |
1369 | kernel) thread. */ | |
1370 | ||
1371 | static int | |
1372 | sol_find_new_threads_callback(th, ignored) | |
1373 | const td_thrhandle_t *th; | |
1374 | void *ignored; | |
1375 | { | |
1376 | td_err_e retval; | |
1377 | td_thrinfo_t ti; | |
1378 | int pid; | |
1379 | ||
1380 | if ((retval = p_td_thr_get_info(th, &ti)) != TD_OK) | |
1381 | { | |
1382 | return -1; | |
1383 | } | |
1384 | pid = BUILD_THREAD(ti.ti_tid, PIDGET(inferior_pid)); | |
1385 | if (!in_thread_list(pid)) | |
1386 | add_thread(pid); | |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | void | |
1392 | sol_find_new_threads() | |
1393 | { | |
1394 | /* don't do anything if init failed to resolve the libthread_db library */ | |
1395 | if (!procfs_suppress_run) | |
1396 | return; | |
1397 | ||
1398 | if (inferior_pid == -1) | |
1399 | { | |
1400 | printf_filtered("No process.\n"); | |
1401 | return; | |
1402 | } | |
1403 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *)0, | |
1404 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, | |
1405 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1406 | } | |
1407 | ||
1408 | static void | |
1409 | sol_core_open (filename, from_tty) | |
1410 | char *filename; | |
1411 | int from_tty; | |
1412 | { | |
1413 | orig_core_ops.to_open (filename, from_tty); | |
1414 | } | |
1415 | ||
1416 | static void | |
1417 | sol_core_close (quitting) | |
1418 | int quitting; | |
1419 | { | |
1420 | orig_core_ops.to_close (quitting); | |
1421 | } | |
1422 | ||
1423 | static void | |
1424 | sol_core_detach (args, from_tty) | |
1425 | char *args; | |
1426 | int from_tty; | |
1427 | { | |
1428 | unpush_target (&core_ops); | |
1429 | orig_core_ops.to_detach (args, from_tty); | |
1430 | } | |
1431 | ||
1432 | static void | |
1433 | sol_core_files_info (t) | |
1434 | struct target_ops *t; | |
1435 | { | |
1436 | orig_core_ops.to_files_info (t); | |
1437 | } | |
1438 | ||
1439 | #ifdef MAINTENANCE_CMDS | |
1440 | /* Worker bee for info sol-thread command. This is a callback function that | |
1441 | gets called once for each Solaris thread (ie. not kernel thread) in the | |
1442 | inferior. Print anything interesting that we can think of. */ | |
1443 | ||
1444 | static int | |
1445 | info_cb (th, s) | |
1446 | const td_thrhandle_t *th; | |
1447 | void *s; | |
1448 | { | |
1449 | td_err_e ret; | |
1450 | td_thrinfo_t ti; | |
1451 | struct minimal_symbol *msym; | |
1452 | ||
1453 | if ((ret = p_td_thr_get_info (th, &ti)) == TD_OK) | |
1454 | { | |
1455 | printf_filtered ("%s thread #%d, lwp %d, ", | |
1456 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
1457 | ti.ti_tid, ti.ti_lid); | |
1458 | switch (ti.ti_state) { | |
1459 | default: | |
1460 | case TD_THR_UNKNOWN: printf_filtered ("<unknown state>"); break; | |
1461 | case TD_THR_STOPPED: printf_filtered ("(stopped)"); break; | |
1462 | case TD_THR_RUN: printf_filtered ("(run) "); break; | |
1463 | case TD_THR_ACTIVE: printf_filtered ("(active) "); break; | |
1464 | case TD_THR_ZOMBIE: printf_filtered ("(zombie) "); break; | |
1465 | case TD_THR_SLEEP: printf_filtered ("(asleep) "); break; | |
1466 | case TD_THR_STOPPED_ASLEEP: | |
1467 | printf_filtered ("(stopped asleep)"); break; | |
1468 | } | |
1469 | /* Print thr_create start function: */ | |
1470 | if (ti.ti_startfunc != 0) | |
1471 | if (msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc)) | |
1472 | printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym)); | |
1473 | else | |
1474 | printf_filtered (" startfunc: 0x%08x\n", ti.ti_startfunc); | |
1475 | ||
1476 | /* If thread is asleep, print function that went to sleep: */ | |
1477 | if (ti.ti_state == TD_THR_SLEEP) | |
1478 | if (msym = lookup_minimal_symbol_by_pc (ti.ti_pc)) | |
1479 | printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym)); | |
1480 | else | |
1481 | printf_filtered (" - Sleep func: 0x%08x\n", ti.ti_startfunc); | |
1482 | ||
1483 | /* Wrap up line, if necessary */ | |
1484 | if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) | |
1485 | printf_filtered ("\n"); /* don't you hate counting newlines? */ | |
1486 | } | |
1487 | else | |
1488 | warning ("info sol-thread: failed to get info for thread."); | |
1489 | ||
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | /* List some state about each Solaris user thread in the inferior. */ | |
1494 | ||
1495 | static void | |
1496 | info_solthreads (args, from_tty) | |
1497 | char *args; | |
1498 | int from_tty; | |
1499 | { | |
1500 | p_td_ta_thr_iter (main_ta, info_cb, args, | |
1501 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, | |
1502 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1503 | } | |
1504 | #endif /* MAINTENANCE_CMDS */ | |
1505 | ||
1506 | static int | |
1507 | ignore (addr, contents) | |
1508 | CORE_ADDR addr; | |
1509 | char *contents; | |
1510 | { | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | ||
1515 | static void | |
1516 | init_sol_thread_ops () | |
1517 | { | |
1518 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1519 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1520 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
1521 | sol_thread_ops.to_open = sol_thread_open; | |
1522 | sol_thread_ops.to_close = 0; | |
1523 | sol_thread_ops.to_attach = sol_thread_attach; | |
1524 | sol_thread_ops.to_detach = sol_thread_detach; | |
1525 | sol_thread_ops.to_resume = sol_thread_resume; | |
1526 | sol_thread_ops.to_wait = sol_thread_wait; | |
1527 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1528 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
1529 | sol_thread_ops.to_prepare_to_store = sol_thread_prepare_to_store; | |
1530 | sol_thread_ops.to_xfer_memory = sol_thread_xfer_memory; | |
1531 | sol_thread_ops.to_files_info = sol_thread_files_info; | |
1532 | sol_thread_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
1533 | sol_thread_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
1534 | sol_thread_ops.to_terminal_init = terminal_init_inferior; | |
1535 | sol_thread_ops.to_terminal_inferior = terminal_inferior; | |
1536 | sol_thread_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1537 | sol_thread_ops.to_terminal_ours = terminal_ours; | |
1538 | sol_thread_ops.to_terminal_info = child_terminal_info; | |
1539 | sol_thread_ops.to_kill = sol_thread_kill_inferior; | |
1540 | sol_thread_ops.to_load = 0; | |
1541 | sol_thread_ops.to_lookup_symbol = 0; | |
1542 | sol_thread_ops.to_create_inferior = sol_thread_create_inferior; | |
1543 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; | |
1544 | sol_thread_ops.to_can_run = sol_thread_can_run; | |
1545 | sol_thread_ops.to_notice_signals = sol_thread_notice_signals; | |
1546 | sol_thread_ops.to_thread_alive = sol_thread_alive; | |
1547 | sol_thread_ops.to_stop = sol_thread_stop; | |
1548 | sol_thread_ops.to_stratum = process_stratum; | |
1549 | sol_thread_ops.to_has_all_memory = 1; | |
1550 | sol_thread_ops.to_has_memory = 1; | |
1551 | sol_thread_ops.to_has_stack = 1; | |
1552 | sol_thread_ops.to_has_registers = 1; | |
1553 | sol_thread_ops.to_has_execution = 1; | |
1554 | sol_thread_ops.to_has_thread_control = tc_none; | |
1555 | sol_thread_ops.to_sections = 0; | |
1556 | sol_thread_ops.to_sections_end = 0; | |
1557 | sol_thread_ops.to_magic = OPS_MAGIC; | |
1558 | } | |
1559 | ||
1560 | ||
1561 | static void | |
1562 | init_sol_core_ops () | |
1563 | { | |
1564 | sol_core_ops.to_shortname = "solaris-core"; | |
1565 | sol_core_ops.to_longname = "Solaris core threads and pthread."; | |
1566 | sol_core_ops.to_doc = "Solaris threads and pthread support for core files."; | |
1567 | sol_core_ops.to_open = sol_core_open; | |
1568 | sol_core_ops.to_close = sol_core_close; | |
1569 | sol_core_ops.to_attach = sol_thread_attach; | |
1570 | sol_core_ops.to_detach = sol_core_detach; | |
1571 | /* sol_core_ops.to_resume = 0; */ | |
1572 | /* sol_core_ops.to_wait = 0; */ | |
1573 | sol_core_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1574 | /* sol_core_ops.to_store_registers = 0; */ | |
1575 | /* sol_core_ops.to_prepare_to_store = 0; */ | |
1576 | sol_core_ops.to_xfer_memory = sol_thread_xfer_memory; | |
1577 | sol_core_ops.to_files_info = sol_core_files_info; | |
1578 | sol_core_ops.to_insert_breakpoint = ignore; | |
1579 | sol_core_ops.to_remove_breakpoint = ignore; | |
1580 | /* sol_core_ops.to_terminal_init = 0; */ | |
1581 | /* sol_core_ops.to_terminal_inferior = 0; */ | |
1582 | /* sol_core_ops.to_terminal_ours_for_output = 0; */ | |
1583 | /* sol_core_ops.to_terminal_ours = 0; */ | |
1584 | /* sol_core_ops.to_terminal_info = 0; */ | |
1585 | /* sol_core_ops.to_kill = 0; */ | |
1586 | /* sol_core_ops.to_load = 0; */ | |
1587 | /* sol_core_ops.to_lookup_symbol = 0; */ | |
1588 | sol_core_ops.to_create_inferior = sol_thread_create_inferior; | |
1589 | sol_core_ops.to_stratum = core_stratum; | |
1590 | sol_core_ops.to_has_all_memory = 0; | |
1591 | sol_core_ops.to_has_memory = 1; | |
1592 | sol_core_ops.to_has_stack = 1; | |
1593 | sol_core_ops.to_has_registers = 1; | |
1594 | sol_core_ops.to_has_execution = 0; | |
1595 | sol_core_ops.to_has_thread_control = tc_none; | |
1596 | sol_core_ops.to_sections = 0; | |
1597 | sol_core_ops.to_sections_end = 0; | |
1598 | sol_core_ops.to_magic = OPS_MAGIC; | |
1599 | } | |
1600 | ||
1601 | /* we suppress the call to add_target of core_ops in corelow because | |
1602 | if there are two targets in the stratum core_stratum, find_core_target | |
1603 | won't know which one to return. see corelow.c for an additonal | |
1604 | comment on coreops_suppress_target. */ | |
1605 | int coreops_suppress_target = 1; | |
1606 | ||
1607 | void | |
1608 | _initialize_sol_thread () | |
1609 | { | |
1610 | void *dlhandle; | |
1611 | ||
1612 | init_sol_thread_ops (); | |
1613 | init_sol_core_ops (); | |
1614 | ||
1615 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1616 | if (!dlhandle) | |
1617 | goto die; | |
1618 | ||
1619 | #define resolve(X) \ | |
1620 | if (!(p_##X = dlsym (dlhandle, #X))) \ | |
1621 | goto die; | |
1622 | ||
1623 | resolve (td_log); | |
1624 | resolve (td_ta_new); | |
1625 | resolve (td_ta_delete); | |
1626 | resolve (td_init); | |
1627 | resolve (td_ta_get_ph); | |
1628 | resolve (td_ta_get_nthreads); | |
1629 | resolve (td_ta_tsd_iter); | |
1630 | resolve (td_ta_thr_iter); | |
1631 | resolve (td_thr_validate); | |
1632 | resolve (td_thr_tsd); | |
1633 | resolve (td_thr_get_info); | |
1634 | resolve (td_thr_getfpregs); | |
1635 | resolve (td_thr_getxregsize); | |
1636 | resolve (td_thr_getxregs); | |
1637 | resolve (td_thr_sigsetmask); | |
1638 | resolve (td_thr_setprio); | |
1639 | resolve (td_thr_setsigpending); | |
1640 | resolve (td_thr_setfpregs); | |
1641 | resolve (td_thr_setxregs); | |
1642 | resolve (td_ta_map_id2thr); | |
1643 | resolve (td_ta_map_lwp2thr); | |
1644 | resolve (td_thr_getgregs); | |
1645 | resolve (td_thr_setgregs); | |
1646 | ||
1647 | add_target (&sol_thread_ops); | |
1648 | ||
1649 | procfs_suppress_run = 1; | |
1650 | ||
1651 | #ifdef MAINTENANCE_CMDS | |
1652 | add_cmd ("sol-threads", class_maintenance, info_solthreads, | |
1653 | "Show info on Solaris user threads.\n", &maintenanceinfolist); | |
1654 | #endif /* MAINTENANCE_CMDS */ | |
1655 | ||
1656 | memcpy(&orig_core_ops, &core_ops, sizeof (struct target_ops)); | |
1657 | memcpy(&core_ops, &sol_core_ops, sizeof (struct target_ops)); | |
1658 | add_target (&core_ops); | |
1659 | ||
1660 | return; | |
1661 | ||
1662 | die: | |
1663 | ||
1664 | fprintf_unfiltered (gdb_stderr, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
1665 | ||
1666 | if (dlhandle) | |
1667 | dlclose (dlhandle); | |
1668 | ||
1669 | /* allow the user to debug non-threaded core files */ | |
1670 | add_target(&core_ops); | |
1671 | ||
1672 | return; | |
1673 | } |