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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
28e7fd62 | 3 | Copyright (C) 1996-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | /* This module implements a sort of half target that sits between the | |
8d027a04 MK |
21 | machine-independent parts of GDB and the /proc interface (procfs.c) |
22 | to provide access to the Solaris user-mode thread implementation. | |
23 | ||
24 | Solaris threads are true user-mode threads, which are invoked via | |
25 | the thr_* and pthread_* (native and POSIX respectivly) interfaces. | |
26 | These are mostly implemented in user-space, with all thread context | |
27 | kept in various structures that live in the user's heap. These | |
28 | should not be confused with lightweight processes (LWPs), which are | |
29 | implemented by the kernel, and scheduled without explicit | |
30 | intervention by the process. | |
31 | ||
32 | Just to confuse things a little, Solaris threads (both native and | |
33 | POSIX) are actually implemented using LWPs. In general, there are | |
34 | going to be more threads than LWPs. There is no fixed | |
35 | correspondence between a thread and an LWP. When a thread wants to | |
36 | run, it gets scheduled onto the first available LWP and can | |
37 | therefore migrate from one LWP to another as time goes on. A | |
c906108c SS |
38 | sleeping thread may not be associated with an LWP at all! |
39 | ||
8d027a04 MK |
40 | To make it possible to mess with threads, Sun provides a library |
41 | called libthread_db.so.1 (not to be confused with | |
42 | libthread_db.so.0, which doesn't have a published interface). This | |
43 | interface has an upper part, which it provides, and a lower part | |
44 | which we provide. The upper part consists of the td_* routines, | |
45 | which allow us to find all the threads, query their state, etc... | |
46 | The lower part consists of all of the ps_*, which are used by the | |
47 | td_* routines to read/write memory, manipulate LWPs, lookup | |
48 | symbols, etc... The ps_* routines actually do most of their work | |
49 | by calling functions in procfs.c. */ | |
c906108c SS |
50 | |
51 | #include "defs.h" | |
52 | #include <thread.h> | |
53 | #include <proc_service.h> | |
54 | #include <thread_db.h> | |
55 | #include "gdbthread.h" | |
56 | #include "target.h" | |
57 | #include "inferior.h" | |
58 | #include <fcntl.h> | |
b8a92b82 | 59 | #include "gdb_stat.h" |
c906108c SS |
60 | #include <dlfcn.h> |
61 | #include "gdbcmd.h" | |
23e04971 | 62 | #include "gdbcore.h" |
4e052eda | 63 | #include "regcache.h" |
d45b6f32 | 64 | #include "solib.h" |
990f9fe3 | 65 | #include "symfile.h" |
06d3b283 | 66 | #include "observer.h" |
6f4492c8 | 67 | #include "gdb_string.h" |
d1a7880c | 68 | #include "procfs.h" |
6f4492c8 | 69 | |
c906108c | 70 | struct target_ops sol_thread_ops; |
c906108c | 71 | |
c378eb4e | 72 | /* Prototypes for supply_gregset etc. */ |
c60c0f5f | 73 | #include "gregset.h" |
c906108c | 74 | |
8d027a04 MK |
75 | /* This struct is defined by us, but mainly used for the proc_service |
76 | interface. We don't have much use for it, except as a handy place | |
77 | to get a real PID for memory accesses. */ | |
c906108c SS |
78 | |
79 | struct ps_prochandle | |
8d027a04 MK |
80 | { |
81 | ptid_t ptid; | |
82 | }; | |
c906108c SS |
83 | |
84 | struct string_map | |
8d027a04 MK |
85 | { |
86 | int num; | |
87 | char *str; | |
88 | }; | |
c906108c SS |
89 | |
90 | static struct ps_prochandle main_ph; | |
91 | static td_thragent_t *main_ta; | |
92 | static int sol_thread_active = 0; | |
93 | ||
a14ed312 | 94 | static void init_sol_thread_ops (void); |
c906108c | 95 | |
8d027a04 MK |
96 | /* Default definitions: These must be defined in tm.h if they are to |
97 | be shared with a process module such as procfs. */ | |
d4f3574e | 98 | |
ca6724c1 KB |
99 | #define GET_PID(ptid) ptid_get_pid (ptid) |
100 | #define GET_LWP(ptid) ptid_get_lwp (ptid) | |
101 | #define GET_THREAD(ptid) ptid_get_tid (ptid) | |
102 | ||
103 | #define is_lwp(ptid) (GET_LWP (ptid) != 0) | |
104 | #define is_thread(ptid) (GET_THREAD (ptid) != 0) | |
105 | ||
106 | #define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) | |
107 | #define BUILD_THREAD(tid, pid) ptid_build (pid, 0, tid) | |
c906108c | 108 | |
8d027a04 MK |
109 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
110 | ||
111 | static void (*p_td_log)(const int on_off); | |
112 | static td_err_e (*p_td_ta_new)(const struct ps_prochandle *ph_p, | |
113 | td_thragent_t **ta_pp); | |
114 | static td_err_e (*p_td_ta_delete)(td_thragent_t *ta_p); | |
115 | static td_err_e (*p_td_init)(void); | |
116 | static td_err_e (*p_td_ta_get_ph)(const td_thragent_t *ta_p, | |
117 | struct ps_prochandle **ph_pp); | |
118 | static td_err_e (*p_td_ta_get_nthreads)(const td_thragent_t *ta_p, | |
119 | int *nthread_p); | |
120 | static td_err_e (*p_td_ta_tsd_iter)(const td_thragent_t *ta_p, | |
121 | td_key_iter_f *cb, void *cbdata_p); | |
122 | static td_err_e (*p_td_ta_thr_iter)(const td_thragent_t *ta_p, | |
123 | td_thr_iter_f *cb, void *cbdata_p, | |
124 | td_thr_state_e state, int ti_pri, | |
125 | sigset_t *ti_sigmask_p, | |
126 | unsigned ti_user_flags); | |
127 | static td_err_e (*p_td_thr_validate)(const td_thrhandle_t *th_p); | |
128 | static td_err_e (*p_td_thr_tsd)(const td_thrhandle_t * th_p, | |
129 | const thread_key_t key, void **data_pp); | |
130 | static td_err_e (*p_td_thr_get_info)(const td_thrhandle_t *th_p, | |
131 | td_thrinfo_t *ti_p); | |
132 | static td_err_e (*p_td_thr_getfpregs)(const td_thrhandle_t *th_p, | |
133 | prfpregset_t *fpregset); | |
134 | static td_err_e (*p_td_thr_getxregsize)(const td_thrhandle_t *th_p, | |
135 | int *xregsize); | |
136 | static td_err_e (*p_td_thr_getxregs)(const td_thrhandle_t *th_p, | |
137 | const caddr_t xregset); | |
138 | static td_err_e (*p_td_thr_sigsetmask)(const td_thrhandle_t *th_p, | |
139 | const sigset_t ti_sigmask); | |
140 | static td_err_e (*p_td_thr_setprio)(const td_thrhandle_t *th_p, | |
141 | const int ti_pri); | |
142 | static td_err_e (*p_td_thr_setsigpending)(const td_thrhandle_t *th_p, | |
143 | const uchar_t ti_pending_flag, | |
144 | const sigset_t ti_pending); | |
145 | static td_err_e (*p_td_thr_setfpregs)(const td_thrhandle_t *th_p, | |
146 | const prfpregset_t *fpregset); | |
147 | static td_err_e (*p_td_thr_setxregs)(const td_thrhandle_t *th_p, | |
148 | const caddr_t xregset); | |
149 | static td_err_e (*p_td_ta_map_id2thr)(const td_thragent_t *ta_p, | |
150 | thread_t tid, | |
151 | td_thrhandle_t *th_p); | |
152 | static td_err_e (*p_td_ta_map_lwp2thr)(const td_thragent_t *ta_p, | |
153 | lwpid_t lwpid, | |
154 | td_thrhandle_t *th_p); | |
155 | static td_err_e (*p_td_thr_getgregs)(const td_thrhandle_t *th_p, | |
156 | prgregset_t regset); | |
157 | static td_err_e (*p_td_thr_setgregs)(const td_thrhandle_t *th_p, | |
158 | const prgregset_t regset); | |
159 | \f | |
c906108c | 160 | |
8d027a04 MK |
161 | /* Return the libthread_db error string associated with ERRCODE. If |
162 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c SS |
163 | |
164 | static char * | |
fba45db2 | 165 | td_err_string (td_err_e errcode) |
c906108c | 166 | { |
8d027a04 | 167 | static struct string_map td_err_table[] = |
c5aa993b | 168 | { |
8d027a04 MK |
169 | { TD_OK, "generic \"call succeeded\"" }, |
170 | { TD_ERR, "generic error." }, | |
171 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
172 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
173 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
174 | { TD_BADPH, "invalid process handle" }, | |
175 | { TD_BADTH, "invalid thread handle" }, | |
176 | { TD_BADSH, "invalid synchronization handle" }, | |
177 | { TD_BADTA, "invalid thread agent" }, | |
178 | { TD_BADKEY, "invalid key" }, | |
179 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
180 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
181 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
182 | { TD_NOEVENT, "requested event is not supported" }, | |
183 | { TD_NOCAPAB, "capability not available" }, | |
184 | { TD_DBERR, "Debugger service failed" }, | |
185 | { TD_NOAPLIC, "Operation not applicable to" }, | |
186 | { TD_NOTSD, "No thread specific data for this thread" }, | |
187 | { TD_MALLOC, "Malloc failed" }, | |
188 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
189 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 190 | }; |
c906108c SS |
191 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
192 | int i; | |
193 | static char buf[50]; | |
194 | ||
195 | for (i = 0; i < td_err_size; i++) | |
196 | if (td_err_table[i].num == errcode) | |
197 | return td_err_table[i].str; | |
c5aa993b | 198 | |
8c042590 PM |
199 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db error code: %d", |
200 | errcode); | |
c906108c SS |
201 | |
202 | return buf; | |
203 | } | |
c906108c | 204 | |
b021a221 | 205 | /* Return the libthread_db state string assicoated with STATECODE. |
8d027a04 | 206 | If STATECODE is unknown, return an appropriate message. */ |
c906108c SS |
207 | |
208 | static char * | |
fba45db2 | 209 | td_state_string (td_thr_state_e statecode) |
c906108c | 210 | { |
8d027a04 | 211 | static struct string_map td_thr_state_table[] = |
c5aa993b | 212 | { |
8d027a04 MK |
213 | { TD_THR_ANY_STATE, "any state" }, |
214 | { TD_THR_UNKNOWN, "unknown" }, | |
215 | { TD_THR_STOPPED, "stopped" }, | |
216 | { TD_THR_RUN, "run" }, | |
217 | { TD_THR_ACTIVE, "active" }, | |
218 | { TD_THR_ZOMBIE, "zombie" }, | |
219 | { TD_THR_SLEEP, "sleep" }, | |
220 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 221 | }; |
8d027a04 MK |
222 | const int td_thr_state_table_size = |
223 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
224 | int i; |
225 | static char buf[50]; | |
226 | ||
227 | for (i = 0; i < td_thr_state_table_size; i++) | |
228 | if (td_thr_state_table[i].num == statecode) | |
229 | return td_thr_state_table[i].str; | |
c5aa993b | 230 | |
8c042590 PM |
231 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db state code: %d", |
232 | statecode); | |
c906108c SS |
233 | |
234 | return buf; | |
235 | } | |
236 | \f | |
c906108c | 237 | |
8d027a04 MK |
238 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
239 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 240 | DEFAULT_LWP. |
c906108c | 241 | |
8d027a04 | 242 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 243 | |
39f77062 KB |
244 | static ptid_t |
245 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
246 | { |
247 | td_thrinfo_t ti; | |
248 | td_thrhandle_t th; | |
249 | td_err_e val; | |
250 | ||
251 | if (is_lwp (thread_id)) | |
8d027a04 | 252 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 253 | |
8d027a04 | 254 | /* It's a thread. Convert to LWP. */ |
c906108c SS |
255 | |
256 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); | |
257 | if (val == TD_NOTHR) | |
8d027a04 | 258 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 259 | else if (val != TD_OK) |
8a3fe4f8 | 260 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
261 | |
262 | val = p_td_thr_get_info (&th, &ti); | |
263 | if (val == TD_NOTHR) | |
8d027a04 | 264 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 265 | else if (val != TD_OK) |
8a3fe4f8 | 266 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
267 | |
268 | if (ti.ti_state != TD_THR_ACTIVE) | |
269 | { | |
270 | if (default_lwp != -1) | |
39f77062 | 271 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 272 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
273 | td_state_string (ti.ti_state)); |
274 | } | |
275 | ||
276 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); | |
277 | } | |
c906108c | 278 | |
8d027a04 MK |
279 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
280 | doesn't exists, that's an error. | |
c906108c | 281 | |
8d027a04 | 282 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 283 | |
39f77062 KB |
284 | static ptid_t |
285 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
286 | { |
287 | td_thrinfo_t ti; | |
288 | td_thrhandle_t th; | |
289 | td_err_e val; | |
290 | ||
291 | if (is_thread (lwp)) | |
8d027a04 | 292 | return lwp; /* It's already a thread ID. */ |
c906108c | 293 | |
8d027a04 | 294 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 295 | |
28439f5e | 296 | if (!target_thread_alive (lwp)) |
8d027a04 | 297 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c SS |
298 | |
299 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); | |
300 | if (val == TD_NOTHR) | |
8d027a04 | 301 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 302 | else if (val != TD_OK) |
8a3fe4f8 | 303 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
304 | |
305 | val = p_td_thr_validate (&th); | |
306 | if (val == TD_NOTHR) | |
8d027a04 | 307 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 308 | else if (val != TD_OK) |
8a3fe4f8 | 309 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
310 | |
311 | val = p_td_thr_get_info (&th, &ti); | |
312 | if (val == TD_NOTHR) | |
8d027a04 | 313 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 314 | else if (val != TD_OK) |
8a3fe4f8 | 315 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c SS |
316 | |
317 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); | |
318 | } | |
319 | \f | |
c906108c | 320 | |
8d027a04 | 321 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
322 | through to the layer beneath, as they don't need to do anything |
323 | specific for threads. */ | |
c906108c | 324 | |
8d027a04 MK |
325 | /* Take a program previously attached to and detaches it. The program |
326 | resumes execution and will no longer stop on signals, etc. We'd | |
327 | better not have left any breakpoints in the program or it'll die | |
328 | when it hits one. For this to work, it may be necessary for the | |
329 | process to have been previously attached. It *might* work if the | |
330 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
331 | |
332 | static void | |
136d6dae | 333 | sol_thread_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c | 334 | { |
28439f5e PA |
335 | struct target_ops *beneath = find_target_beneath (ops); |
336 | ||
2689673f | 337 | sol_thread_active = 0; |
39f77062 | 338 | inferior_ptid = pid_to_ptid (PIDGET (main_ph.ptid)); |
28439f5e PA |
339 | unpush_target (ops); |
340 | beneath->to_detach (beneath, args, from_tty); | |
c906108c SS |
341 | } |
342 | ||
8d027a04 MK |
343 | /* Resume execution of process PTID. If STEP is nozero, then just |
344 | single step it. If SIGNAL is nonzero, restart it with that signal | |
345 | activated. We may have to convert PTID from a thread ID to an LWP | |
346 | ID for procfs. */ | |
c906108c SS |
347 | |
348 | static void | |
28439f5e | 349 | sol_thread_resume (struct target_ops *ops, |
2ea28649 | 350 | ptid_t ptid, int step, enum gdb_signal signo) |
c906108c SS |
351 | { |
352 | struct cleanup *old_chain; | |
28439f5e | 353 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c | 354 | |
39f77062 | 355 | old_chain = save_inferior_ptid (); |
c906108c | 356 | |
39f77062 KB |
357 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
358 | if (PIDGET (inferior_ptid) == -1) | |
359 | inferior_ptid = procfs_first_available (); | |
c906108c | 360 | |
39f77062 | 361 | if (PIDGET (ptid) != -1) |
c906108c | 362 | { |
39f77062 | 363 | ptid_t save_ptid = ptid; |
c906108c | 364 | |
39f77062 | 365 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 366 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 367 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 368 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 369 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 370 | GET_THREAD (save_ptid)); |
c906108c SS |
371 | } |
372 | ||
28439f5e | 373 | beneath->to_resume (beneath, ptid, step, signo); |
c906108c SS |
374 | |
375 | do_cleanups (old_chain); | |
376 | } | |
377 | ||
2689673f | 378 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 379 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 380 | |
39f77062 | 381 | static ptid_t |
117de6a9 | 382 | sol_thread_wait (struct target_ops *ops, |
47608cb1 | 383 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
c906108c | 384 | { |
39f77062 KB |
385 | ptid_t rtnval; |
386 | ptid_t save_ptid; | |
28439f5e | 387 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c SS |
388 | struct cleanup *old_chain; |
389 | ||
39f77062 KB |
390 | save_ptid = inferior_ptid; |
391 | old_chain = save_inferior_ptid (); | |
c906108c | 392 | |
39f77062 KB |
393 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
394 | if (PIDGET (inferior_ptid) == -1) | |
395 | inferior_ptid = procfs_first_available (); | |
c906108c | 396 | |
39f77062 | 397 | if (PIDGET (ptid) != -1) |
c906108c | 398 | { |
39f77062 | 399 | ptid_t save_ptid = ptid; |
c906108c | 400 | |
39f77062 | 401 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 402 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 403 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 404 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 405 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 406 | GET_THREAD (save_ptid)); |
c906108c SS |
407 | } |
408 | ||
47608cb1 | 409 | rtnval = beneath->to_wait (beneath, ptid, ourstatus, options); |
c906108c SS |
410 | |
411 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
412 | { | |
8d027a04 | 413 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 414 | rtnval = lwp_to_thread (rtnval); |
39f77062 KB |
415 | if (PIDGET (rtnval) == -1) |
416 | rtnval = save_ptid; | |
c906108c | 417 | |
8d027a04 | 418 | /* See if we have a new thread. */ |
c906108c | 419 | if (is_thread (rtnval) |
39f77062 | 420 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
421 | && (!in_thread_list (rtnval) |
422 | || is_exited (rtnval))) | |
93815fbf | 423 | add_thread (rtnval); |
c906108c SS |
424 | } |
425 | ||
8d027a04 MK |
426 | /* During process initialization, we may get here without the thread |
427 | package being initialized, since that can only happen after we've | |
428 | found the shared libs. */ | |
c906108c SS |
429 | |
430 | do_cleanups (old_chain); | |
431 | ||
432 | return rtnval; | |
433 | } | |
434 | ||
435 | static void | |
28439f5e PA |
436 | sol_thread_fetch_registers (struct target_ops *ops, |
437 | struct regcache *regcache, int regnum) | |
c906108c SS |
438 | { |
439 | thread_t thread; | |
440 | td_thrhandle_t thandle; | |
441 | td_err_e val; | |
442 | prgregset_t gregset; | |
443 | prfpregset_t fpregset; | |
e71c308d DJ |
444 | gdb_gregset_t *gregset_p = &gregset; |
445 | gdb_fpregset_t *fpregset_p = &fpregset; | |
28439f5e | 446 | struct target_ops *beneath = find_target_beneath (ops); |
e71c308d | 447 | |
39f77062 | 448 | if (!is_thread (inferior_ptid)) |
8d027a04 | 449 | { |
28439f5e PA |
450 | /* It's an LWP; pass the request on to the layer beneath. */ |
451 | beneath->to_fetch_registers (beneath, regcache, regnum); | |
c906108c SS |
452 | return; |
453 | } | |
454 | ||
8d027a04 | 455 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 456 | thread = GET_THREAD (inferior_ptid); |
c906108c | 457 | if (thread == 0) |
8a3fe4f8 | 458 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
459 | |
460 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
461 | if (val != TD_OK) | |
8a3fe4f8 | 462 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
463 | td_err_string (val)); |
464 | ||
8d027a04 | 465 | /* Get the general-purpose registers. */ |
c906108c SS |
466 | |
467 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 468 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 469 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
470 | td_err_string (val)); |
471 | ||
8d027a04 MK |
472 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
473 | and %sp are saved (by a thread context switch). */ | |
c906108c | 474 | |
8d027a04 | 475 | /* And, now the floating-point registers. */ |
c906108c SS |
476 | |
477 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 478 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 479 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
480 | td_err_string (val)); |
481 | ||
8d027a04 MK |
482 | /* Note that we must call supply_gregset and supply_fpregset *after* |
483 | calling the td routines because the td routines call ps_lget* | |
484 | which affect the values stored in the registers array. */ | |
c906108c | 485 | |
e71c308d DJ |
486 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
487 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
488 | } |
489 | ||
490 | static void | |
28439f5e PA |
491 | sol_thread_store_registers (struct target_ops *ops, |
492 | struct regcache *regcache, int regnum) | |
c906108c SS |
493 | { |
494 | thread_t thread; | |
495 | td_thrhandle_t thandle; | |
496 | td_err_e val; | |
8d027a04 | 497 | prgregset_t gregset; |
c906108c | 498 | prfpregset_t fpregset; |
c906108c | 499 | |
39f77062 | 500 | if (!is_thread (inferior_ptid)) |
8d027a04 | 501 | { |
28439f5e PA |
502 | struct target_ops *beneath = find_target_beneath (ops); |
503 | ||
504 | /* It's an LWP; pass the request on to the layer beneath. */ | |
505 | beneath->to_store_registers (beneath, regcache, regnum); | |
c906108c SS |
506 | return; |
507 | } | |
508 | ||
8d027a04 | 509 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 510 | thread = GET_THREAD (inferior_ptid); |
c906108c SS |
511 | |
512 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
513 | if (val != TD_OK) | |
8a3fe4f8 | 514 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
515 | td_err_string (val)); |
516 | ||
8d027a04 MK |
517 | if (regnum != -1) |
518 | { | |
519 | /* Not writing all the registers. */ | |
87232496 | 520 | char old_value[MAX_REGISTER_SIZE]; |
6034ae49 | 521 | |
87232496 | 522 | /* Save new register value. */ |
56be3814 | 523 | regcache_raw_collect (regcache, regnum, old_value); |
c906108c | 524 | |
c60c0f5f | 525 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 526 | if (val != TD_OK) |
8a3fe4f8 | 527 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
528 | td_err_string (val)); |
529 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
530 | if (val != TD_OK) | |
8a3fe4f8 | 531 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c SS |
532 | td_err_string (val)); |
533 | ||
87232496 | 534 | /* Restore new register value. */ |
56be3814 | 535 | regcache_raw_supply (regcache, regnum, old_value); |
c906108c SS |
536 | } |
537 | ||
56be3814 UW |
538 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
539 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 540 | |
c60c0f5f | 541 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 542 | if (val != TD_OK) |
8a3fe4f8 | 543 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
544 | td_err_string (val)); |
545 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
546 | if (val != TD_OK) | |
8a3fe4f8 | 547 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c | 548 | td_err_string (val)); |
c906108c SS |
549 | } |
550 | ||
8d027a04 MK |
551 | /* Perform partial transfers on OBJECT. See target_read_partial and |
552 | target_write_partial for details of each variant. One, and only | |
553 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 RM |
554 | |
555 | static LONGEST | |
556 | sol_thread_xfer_partial (struct target_ops *ops, enum target_object object, | |
b6958cfb MK |
557 | const char *annex, gdb_byte *readbuf, |
558 | const gdb_byte *writebuf, | |
559 | ULONGEST offset, LONGEST len) | |
6034ae49 RM |
560 | { |
561 | int retval; | |
562 | struct cleanup *old_chain; | |
28439f5e | 563 | struct target_ops *beneath = find_target_beneath (ops); |
6034ae49 RM |
564 | |
565 | old_chain = save_inferior_ptid (); | |
566 | ||
8d027a04 MK |
567 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
568 | { | |
569 | /* It's either a thread or an LWP that isn't alive. Any live | |
570 | LWP will do so use the first available. | |
571 | ||
572 | NOTE: We don't need to call switch_to_thread; we're just | |
573 | reading memory. */ | |
574 | inferior_ptid = procfs_first_available (); | |
575 | } | |
6034ae49 | 576 | |
28439f5e PA |
577 | retval = beneath->to_xfer_partial (beneath, object, annex, |
578 | readbuf, writebuf, offset, len); | |
6034ae49 RM |
579 | |
580 | do_cleanups (old_chain); | |
581 | ||
582 | return retval; | |
583 | } | |
584 | ||
c906108c | 585 | static void |
28439f5e | 586 | check_for_thread_db (void) |
c906108c | 587 | { |
28439f5e PA |
588 | td_err_e err; |
589 | ptid_t ptid; | |
c906108c | 590 | |
28439f5e PA |
591 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
592 | if (p_td_ta_new == NULL) | |
593 | return; | |
c906108c | 594 | |
28439f5e PA |
595 | if (sol_thread_active) |
596 | /* Nothing to do. The thread library was already detected and the | |
597 | target vector was already activated. */ | |
598 | return; | |
c906108c | 599 | |
28439f5e PA |
600 | /* Now, initialize libthread_db. This needs to be done after the |
601 | shared libraries are located because it needs information from | |
602 | the user's thread library. */ | |
c906108c | 603 | |
28439f5e PA |
604 | err = p_td_init (); |
605 | if (err != TD_OK) | |
606 | { | |
607 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
608 | return; | |
609 | } | |
c906108c | 610 | |
28439f5e PA |
611 | /* Now attempt to open a connection to the thread library. */ |
612 | err = p_td_ta_new (&main_ph, &main_ta); | |
613 | switch (err) | |
c906108c | 614 | { |
28439f5e PA |
615 | case TD_NOLIBTHREAD: |
616 | /* No thread library was detected. */ | |
617 | break; | |
2689673f | 618 | |
28439f5e PA |
619 | case TD_OK: |
620 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 621 | |
28439f5e | 622 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 623 | push_target (&sol_thread_ops); |
28439f5e | 624 | sol_thread_active = 1; |
c906108c | 625 | |
28439f5e | 626 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f PA |
627 | ptid = lwp_to_thread (inferior_ptid); |
628 | if (PIDGET (ptid) != -1) | |
28439f5e PA |
629 | inferior_ptid = ptid; |
630 | ||
631 | target_find_new_threads (); | |
632 | break; | |
633 | ||
634 | default: | |
635 | warning (_("Cannot initialize thread debugging library: %s"), | |
636 | td_err_string (err)); | |
637 | break; | |
c906108c SS |
638 | } |
639 | } | |
640 | ||
8d027a04 MK |
641 | /* This routine is called whenever a new symbol table is read in, or |
642 | when all symbol tables are removed. libthread_db can only be | |
643 | initialized when it finds the right variables in libthread.so. | |
644 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 645 | the library gets mapped and the symbol table is read in. */ |
c906108c | 646 | |
06d3b283 | 647 | static void |
fba45db2 | 648 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 649 | { |
28439f5e PA |
650 | if (objfile != NULL) |
651 | check_for_thread_db (); | |
c906108c SS |
652 | } |
653 | ||
654 | /* Clean up after the inferior dies. */ | |
655 | ||
656 | static void | |
136d6dae | 657 | sol_thread_mourn_inferior (struct target_ops *ops) |
c906108c | 658 | { |
28439f5e PA |
659 | struct target_ops *beneath = find_target_beneath (ops); |
660 | ||
2689673f | 661 | sol_thread_active = 0; |
c906108c | 662 | |
28439f5e | 663 | unpush_target (ops); |
c906108c | 664 | |
28439f5e | 665 | beneath->to_mourn_inferior (beneath); |
c906108c SS |
666 | } |
667 | ||
8d027a04 MK |
668 | /* Return true if PTID is still active in the inferior. */ |
669 | ||
c906108c | 670 | static int |
28439f5e | 671 | sol_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 672 | { |
8d027a04 | 673 | if (is_thread (ptid)) |
c906108c | 674 | { |
8d027a04 | 675 | /* It's a (user-level) thread. */ |
c906108c SS |
676 | td_err_e val; |
677 | td_thrhandle_t th; | |
39f77062 | 678 | int pid; |
c906108c | 679 | |
39f77062 | 680 | pid = GET_THREAD (ptid); |
c906108c | 681 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
8d027a04 | 682 | return 0; /* Thread not found. */ |
c906108c | 683 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
8d027a04 MK |
684 | return 0; /* Thread not valid. */ |
685 | return 1; /* Known thread. */ | |
c906108c | 686 | } |
c5aa993b | 687 | else |
c906108c | 688 | { |
28439f5e PA |
689 | struct target_ops *beneath = find_target_beneath (ops); |
690 | ||
691 | /* It's an LPW; pass the request on to the layer below. */ | |
692 | return beneath->to_thread_alive (beneath, ptid); | |
c906108c SS |
693 | } |
694 | } | |
695 | ||
c906108c | 696 | \f |
8d027a04 MK |
697 | /* These routines implement the lower half of the thread_db interface, |
698 | i.e. the ps_* routines. */ | |
c906108c | 699 | |
8d027a04 MK |
700 | /* Various versions of <proc_service.h> have slightly different |
701 | function prototypes. In particular, we have | |
c906108c | 702 | |
c5aa993b JM |
703 | NEWER OLDER |
704 | struct ps_prochandle * const struct ps_prochandle * | |
705 | void* char* | |
8d027a04 MK |
706 | const void* char* |
707 | int size_t | |
c906108c | 708 | |
8d027a04 MK |
709 | Which one you have depends on the Solaris version and what patches |
710 | you've applied. On the theory that there are only two major | |
711 | variants, we have configure check the prototype of ps_pdwrite (), | |
c378eb4e | 712 | and use that info to make appropriate typedefs here. */ |
c906108c SS |
713 | |
714 | #ifdef PROC_SERVICE_IS_OLD | |
c5aa993b JM |
715 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
716 | typedef char *gdb_ps_read_buf_t; | |
717 | typedef char *gdb_ps_write_buf_t; | |
c906108c | 718 | typedef int gdb_ps_size_t; |
76e1ee85 | 719 | typedef psaddr_t gdb_ps_addr_t; |
c906108c | 720 | #else |
c5aa993b JM |
721 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
722 | typedef void *gdb_ps_read_buf_t; | |
723 | typedef const void *gdb_ps_write_buf_t; | |
c906108c | 724 | typedef size_t gdb_ps_size_t; |
291dcb3e | 725 | typedef psaddr_t gdb_ps_addr_t; |
c906108c SS |
726 | #endif |
727 | ||
8d027a04 MK |
728 | /* The next four routines are called by libthread_db to tell us to |
729 | stop and stop a particular process or lwp. Since GDB ensures that | |
730 | these are all stopped by the time we call anything in thread_db, | |
731 | these routines need to do nothing. */ | |
c906108c | 732 | |
8d027a04 | 733 | /* Process stop. */ |
d4f3574e | 734 | |
c906108c SS |
735 | ps_err_e |
736 | ps_pstop (gdb_ps_prochandle_t ph) | |
737 | { | |
738 | return PS_OK; | |
739 | } | |
740 | ||
8d027a04 | 741 | /* Process continue. */ |
d4f3574e | 742 | |
c906108c SS |
743 | ps_err_e |
744 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
745 | { | |
746 | return PS_OK; | |
747 | } | |
748 | ||
8d027a04 | 749 | /* LWP stop. */ |
d4f3574e | 750 | |
c906108c SS |
751 | ps_err_e |
752 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
753 | { | |
754 | return PS_OK; | |
755 | } | |
756 | ||
8d027a04 | 757 | /* LWP continue. */ |
d4f3574e | 758 | |
c906108c SS |
759 | ps_err_e |
760 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
761 | { | |
762 | return PS_OK; | |
763 | } | |
764 | ||
d4f3574e SS |
765 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
766 | ||
c906108c SS |
767 | ps_err_e |
768 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
8d027a04 | 769 | const char *ld_symbol_name, gdb_ps_addr_t *ld_symbol_addr) |
c906108c SS |
770 | { |
771 | struct minimal_symbol *ms; | |
772 | ||
773 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
c906108c SS |
774 | if (!ms) |
775 | return PS_NOSYM; | |
776 | ||
777 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); | |
c906108c SS |
778 | return PS_OK; |
779 | } | |
780 | ||
781 | /* Common routine for reading and writing memory. */ | |
782 | ||
783 | static ps_err_e | |
291dcb3e | 784 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
019c1128 | 785 | gdb_byte *buf, int size) |
c906108c | 786 | { |
28439f5e | 787 | int ret; |
c906108c SS |
788 | struct cleanup *old_chain; |
789 | ||
39f77062 | 790 | old_chain = save_inferior_ptid (); |
c906108c | 791 | |
8d027a04 MK |
792 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
793 | { | |
794 | /* It's either a thread or an LWP that isn't alive. Any live | |
795 | LWP will do so use the first available. | |
796 | ||
797 | NOTE: We don't need to call switch_to_thread; we're just | |
798 | reading memory. */ | |
799 | inferior_ptid = procfs_first_available (); | |
800 | } | |
c906108c | 801 | |
23e04971 MS |
802 | #if defined (__sparcv9) |
803 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
804 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 805 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
806 | addr &= 0xffffffff; |
807 | #endif | |
808 | ||
28439f5e | 809 | if (dowrite) |
0c4f667c | 810 | ret = target_write_memory (addr, (gdb_byte *) buf, size); |
28439f5e | 811 | else |
0c4f667c | 812 | ret = target_read_memory (addr, (gdb_byte *) buf, size); |
c906108c SS |
813 | |
814 | do_cleanups (old_chain); | |
815 | ||
28439f5e | 816 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
817 | } |
818 | ||
d4f3574e SS |
819 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
820 | ||
c906108c | 821 | ps_err_e |
291dcb3e | 822 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
823 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
824 | { | |
825 | return rw_common (0, ph, addr, buf, size); | |
826 | } | |
827 | ||
d4f3574e SS |
828 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
829 | ||
c906108c | 830 | ps_err_e |
291dcb3e | 831 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
832 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
833 | { | |
019c1128 | 834 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
835 | } |
836 | ||
d4f3574e SS |
837 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
838 | ||
c906108c | 839 | ps_err_e |
291dcb3e | 840 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
841 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
842 | { | |
843 | return rw_common (0, ph, addr, buf, size); | |
844 | } | |
845 | ||
d4f3574e SS |
846 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
847 | ||
c906108c | 848 | ps_err_e |
291dcb3e | 849 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
850 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
851 | { | |
019c1128 | 852 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
853 | } |
854 | ||
8d027a04 | 855 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
856 | |
857 | ps_err_e | |
8d027a04 | 858 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c SS |
859 | { |
860 | struct cleanup *old_chain; | |
594f7785 | 861 | struct regcache *regcache; |
c906108c | 862 | |
39f77062 | 863 | old_chain = save_inferior_ptid (); |
c906108c | 864 | |
39f77062 | 865 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
f5656ead | 866 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c5aa993b | 867 | |
28439f5e | 868 | target_fetch_registers (regcache, -1); |
594f7785 | 869 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c SS |
870 | |
871 | do_cleanups (old_chain); | |
872 | ||
873 | return PS_OK; | |
874 | } | |
875 | ||
8d027a04 | 876 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
877 | |
878 | ps_err_e | |
879 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
880 | const prgregset_t gregset) | |
881 | { | |
882 | struct cleanup *old_chain; | |
594f7785 | 883 | struct regcache *regcache; |
c906108c | 884 | |
39f77062 | 885 | old_chain = save_inferior_ptid (); |
c906108c | 886 | |
39f77062 | 887 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
f5656ead | 888 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c5aa993b | 889 | |
594f7785 | 890 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 891 | target_store_registers (regcache, -1); |
c906108c SS |
892 | |
893 | do_cleanups (old_chain); | |
894 | ||
895 | return PS_OK; | |
896 | } | |
897 | ||
d4f3574e SS |
898 | /* Log a message (sends to gdb_stderr). */ |
899 | ||
c906108c | 900 | void |
8d027a04 | 901 | ps_plog (const char *fmt, ...) |
c906108c SS |
902 | { |
903 | va_list args; | |
904 | ||
905 | va_start (args, fmt); | |
906 | ||
907 | vfprintf_filtered (gdb_stderr, fmt, args); | |
908 | } | |
909 | ||
c1357578 JB |
910 | /* Get size of extra register set. Currently a noop. */ |
911 | ||
912 | ps_err_e | |
913 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
914 | { | |
915 | return PS_OK; | |
916 | } | |
917 | ||
918 | /* Get extra register set. Currently a noop. */ | |
919 | ||
920 | ps_err_e | |
921 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
922 | { | |
923 | return PS_OK; | |
924 | } | |
925 | ||
926 | /* Set extra register set. Currently a noop. */ | |
927 | ||
928 | ps_err_e | |
929 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
930 | { | |
931 | return PS_OK; | |
932 | } | |
933 | ||
8d027a04 | 934 | /* Get floating-point registers for LWP. */ |
c906108c SS |
935 | |
936 | ps_err_e | |
937 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
8d027a04 | 938 | prfpregset_t *fpregset) |
c906108c SS |
939 | { |
940 | struct cleanup *old_chain; | |
594f7785 | 941 | struct regcache *regcache; |
c906108c | 942 | |
39f77062 | 943 | old_chain = save_inferior_ptid (); |
c906108c | 944 | |
39f77062 | 945 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
f5656ead | 946 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c906108c | 947 | |
28439f5e | 948 | target_fetch_registers (regcache, -1); |
594f7785 | 949 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c SS |
950 | |
951 | do_cleanups (old_chain); | |
952 | ||
953 | return PS_OK; | |
954 | } | |
955 | ||
c378eb4e | 956 | /* Set floating-point regs for LWP. */ |
c906108c SS |
957 | |
958 | ps_err_e | |
959 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
c5aa993b | 960 | const prfpregset_t * fpregset) |
c906108c SS |
961 | { |
962 | struct cleanup *old_chain; | |
594f7785 | 963 | struct regcache *regcache; |
c906108c | 964 | |
39f77062 | 965 | old_chain = save_inferior_ptid (); |
c906108c | 966 | |
39f77062 | 967 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
f5656ead | 968 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c5aa993b | 969 | |
594f7785 | 970 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 971 | target_store_registers (regcache, -1); |
c906108c SS |
972 | |
973 | do_cleanups (old_chain); | |
974 | ||
975 | return PS_OK; | |
976 | } | |
977 | ||
23715f29 | 978 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
979 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
980 | BFD to do this. There might be a more Solaris-specific | |
981 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
982 | |
983 | ps_err_e | |
984 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) | |
985 | { | |
986 | if (exec_bfd == 0) | |
a95ac8b6 PS |
987 | *data_model = PR_MODEL_UNKNOWN; |
988 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
989 | *data_model = PR_MODEL_ILP32; |
990 | else | |
991 | *data_model = PR_MODEL_LP64; | |
992 | ||
993 | return PS_OK; | |
994 | } | |
23715f29 | 995 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 996 | |
965b60ee | 997 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 998 | |
965b60ee JB |
999 | /* Reads the local descriptor table of a LWP. |
1000 | ||
1001 | This function is necessary on x86-solaris only. Without it, the loading | |
1002 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 1003 | |
c906108c SS |
1004 | ps_err_e |
1005 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1006 | struct ssd *pldt) | |
1007 | { | |
8d027a04 | 1008 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
05e28a7b | 1009 | struct ssd *ret; |
c906108c | 1010 | |
8d027a04 MK |
1011 | /* FIXME: can't I get the process ID from the prochandle or |
1012 | something? */ | |
2f09097b | 1013 | |
39f77062 | 1014 | if (PIDGET (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
1015 | return PS_BADLID; |
1016 | ||
39f77062 | 1017 | ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_ptid))); |
05e28a7b | 1018 | if (ret) |
c906108c | 1019 | { |
05e28a7b AC |
1020 | memcpy (pldt, ret, sizeof (struct ssd)); |
1021 | return PS_OK; | |
c906108c | 1022 | } |
8d027a04 MK |
1023 | else |
1024 | /* LDT not found. */ | |
c906108c | 1025 | return PS_ERR; |
c5aa993b | 1026 | } |
965b60ee | 1027 | #endif |
c906108c | 1028 | \f |
8d027a04 MK |
1029 | |
1030 | /* Convert PTID to printable form. */ | |
c906108c | 1031 | |
02f1df11 | 1032 | static char * |
117de6a9 | 1033 | solaris_pid_to_str (struct target_ops *ops, ptid_t ptid) |
c906108c SS |
1034 | { |
1035 | static char buf[100]; | |
1036 | ||
39f77062 | 1037 | if (is_thread (ptid)) |
c906108c | 1038 | { |
39f77062 | 1039 | ptid_t lwp; |
c906108c | 1040 | |
39f77062 | 1041 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1042 | |
39f77062 | 1043 | if (PIDGET (lwp) == -1) |
8c042590 PM |
1044 | xsnprintf (buf, sizeof (buf), "Thread %ld (defunct)", |
1045 | GET_THREAD (ptid)); | |
39f77062 | 1046 | else if (PIDGET (lwp) != -2) |
8c042590 | 1047 | xsnprintf (buf, sizeof (buf), "Thread %ld (LWP %ld)", |
8d027a04 | 1048 | GET_THREAD (ptid), GET_LWP (lwp)); |
c906108c | 1049 | else |
8c042590 | 1050 | xsnprintf (buf, sizeof (buf), "Thread %ld ", GET_THREAD (ptid)); |
c906108c | 1051 | } |
39f77062 | 1052 | else if (GET_LWP (ptid) != 0) |
8c042590 | 1053 | xsnprintf (buf, sizeof (buf), "LWP %ld ", GET_LWP (ptid)); |
c906108c | 1054 | else |
8c042590 | 1055 | xsnprintf (buf, sizeof (buf), "process %d ", PIDGET (ptid)); |
c906108c SS |
1056 | |
1057 | return buf; | |
1058 | } | |
1059 | \f | |
1060 | ||
8d027a04 MK |
1061 | /* Worker bee for find_new_threads. Callback function that gets |
1062 | called once per user-level thread (i.e. not for LWP's). */ | |
c906108c SS |
1063 | |
1064 | static int | |
fba45db2 | 1065 | sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1066 | { |
1067 | td_err_e retval; | |
1068 | td_thrinfo_t ti; | |
39f77062 | 1069 | ptid_t ptid; |
c906108c | 1070 | |
8d027a04 MK |
1071 | retval = p_td_thr_get_info (th, &ti); |
1072 | if (retval != TD_OK) | |
1073 | return -1; | |
1074 | ||
39f77062 | 1075 | ptid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_ptid)); |
2689673f | 1076 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1077 | add_thread (ptid); |
c906108c SS |
1078 | |
1079 | return 0; | |
1080 | } | |
1081 | ||
d4f3574e | 1082 | static void |
28439f5e | 1083 | sol_find_new_threads (struct target_ops *ops) |
c906108c | 1084 | { |
28439f5e | 1085 | struct target_ops *beneath = find_target_beneath (ops); |
8d027a04 MK |
1086 | |
1087 | /* First Find any new LWP's. */ | |
28439f5e PA |
1088 | if (beneath->to_find_new_threads != NULL) |
1089 | beneath->to_find_new_threads (beneath); | |
8d027a04 MK |
1090 | |
1091 | /* Then find any new user-level threads. */ | |
c5aa993b | 1092 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
c906108c SS |
1093 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1094 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1095 | } | |
1096 | ||
8d027a04 MK |
1097 | /* Worker bee for the "info sol-thread" command. This is a callback |
1098 | function that gets called once for each Solaris user-level thread | |
1099 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1100 | that we can think of. */ | |
c906108c | 1101 | |
c5aa993b | 1102 | static int |
fba45db2 | 1103 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1104 | { |
1105 | td_err_e ret; | |
1106 | td_thrinfo_t ti; | |
c906108c | 1107 | |
8d027a04 MK |
1108 | ret = p_td_thr_get_info (th, &ti); |
1109 | if (ret == TD_OK) | |
c906108c | 1110 | { |
c5aa993b JM |
1111 | printf_filtered ("%s thread #%d, lwp %d, ", |
1112 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1113 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1114 | switch (ti.ti_state) |
1115 | { | |
c906108c | 1116 | default: |
c5aa993b JM |
1117 | case TD_THR_UNKNOWN: |
1118 | printf_filtered ("<unknown state>"); | |
1119 | break; | |
1120 | case TD_THR_STOPPED: | |
1121 | printf_filtered ("(stopped)"); | |
1122 | break; | |
1123 | case TD_THR_RUN: | |
1124 | printf_filtered ("(run) "); | |
1125 | break; | |
1126 | case TD_THR_ACTIVE: | |
1127 | printf_filtered ("(active) "); | |
1128 | break; | |
1129 | case TD_THR_ZOMBIE: | |
1130 | printf_filtered ("(zombie) "); | |
1131 | break; | |
1132 | case TD_THR_SLEEP: | |
1133 | printf_filtered ("(asleep) "); | |
1134 | break; | |
1135 | case TD_THR_STOPPED_ASLEEP: | |
1136 | printf_filtered ("(stopped asleep)"); | |
1137 | break; | |
1138 | } | |
8d027a04 | 1139 | /* Print thr_create start function. */ |
c906108c | 1140 | if (ti.ti_startfunc != 0) |
4ce44c66 | 1141 | { |
5812197c JB |
1142 | const struct bound_minimal_symbol msym |
1143 | = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1144 | ||
17e760ae JB |
1145 | printf_filtered (" startfunc=%s", |
1146 | msym.minsym | |
1147 | ? SYMBOL_PRINT_NAME (msym.minsym) | |
1148 | : paddress (target_gdbarch (), ti.ti_startfunc)); | |
4ce44c66 | 1149 | } |
c906108c | 1150 | |
8d027a04 | 1151 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1152 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 | 1153 | { |
5812197c JB |
1154 | const struct bound_minimal_symbol msym |
1155 | = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1156 | ||
17e760ae JB |
1157 | printf_filtered (" sleepfunc=%s", |
1158 | msym.minsym | |
1159 | ? SYMBOL_PRINT_NAME (msym.minsym) | |
1160 | : paddress (target_gdbarch (), ti.ti_pc)); | |
4ce44c66 | 1161 | } |
c906108c | 1162 | |
c0f5f490 | 1163 | printf_filtered ("\n"); |
c906108c SS |
1164 | } |
1165 | else | |
8a3fe4f8 | 1166 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1167 | |
c5aa993b | 1168 | return 0; |
c906108c SS |
1169 | } |
1170 | ||
8d027a04 MK |
1171 | /* List some state about each Solaris user-level thread in the |
1172 | inferior. */ | |
c906108c SS |
1173 | |
1174 | static void | |
fba45db2 | 1175 | info_solthreads (char *args, int from_tty) |
c906108c | 1176 | { |
c5aa993b | 1177 | p_td_ta_thr_iter (main_ta, info_cb, args, |
c906108c SS |
1178 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1179 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1180 | } | |
c906108c | 1181 | |
3caf13b4 JB |
1182 | /* Callback routine used to find a thread based on the TID part of |
1183 | its PTID. */ | |
1184 | ||
1185 | static int | |
1186 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1187 | { | |
1188 | long *tid = (long *) data; | |
1189 | ||
1190 | if (ptid_get_tid (thread->ptid) == *tid) | |
1191 | return 1; | |
1192 | ||
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | static ptid_t | |
1197 | sol_get_ada_task_ptid (long lwp, long thread) | |
1198 | { | |
1199 | struct thread_info *thread_info = | |
1200 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1201 | ||
1202 | if (thread_info == NULL) | |
1203 | { | |
1204 | /* The list of threads is probably not up to date. Find any | |
1205 | thread that is missing from the list, and try again. */ | |
1206 | sol_find_new_threads (¤t_target); | |
1207 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, | |
1208 | &thread); | |
1209 | } | |
1210 | ||
1211 | gdb_assert (thread_info != NULL); | |
1212 | ||
1213 | return (thread_info->ptid); | |
1214 | } | |
1215 | ||
c906108c | 1216 | static void |
fba45db2 | 1217 | init_sol_thread_ops (void) |
c906108c SS |
1218 | { |
1219 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1220 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1221 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
c906108c SS |
1222 | sol_thread_ops.to_detach = sol_thread_detach; |
1223 | sol_thread_ops.to_resume = sol_thread_resume; | |
1224 | sol_thread_ops.to_wait = sol_thread_wait; | |
1225 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1226 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
6034ae49 | 1227 | sol_thread_ops.to_xfer_partial = sol_thread_xfer_partial; |
c906108c | 1228 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
c906108c | 1229 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
ed9a39eb | 1230 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
b83266a0 | 1231 | sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
28439f5e | 1232 | sol_thread_ops.to_stratum = thread_stratum; |
3caf13b4 | 1233 | sol_thread_ops.to_get_ada_task_ptid = sol_get_ada_task_ptid; |
c906108c SS |
1234 | sol_thread_ops.to_magic = OPS_MAGIC; |
1235 | } | |
1236 | ||
02f1df11 JB |
1237 | /* Silence -Wmissing-prototypes. */ |
1238 | extern void _initialize_sol_thread (void); | |
1239 | ||
c906108c | 1240 | void |
fba45db2 | 1241 | _initialize_sol_thread (void) |
c906108c SS |
1242 | { |
1243 | void *dlhandle; | |
1244 | ||
1245 | init_sol_thread_ops (); | |
c906108c SS |
1246 | |
1247 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1248 | if (!dlhandle) | |
1249 | goto die; | |
1250 | ||
1251 | #define resolve(X) \ | |
1252 | if (!(p_##X = dlsym (dlhandle, #X))) \ | |
1253 | goto die; | |
1254 | ||
1255 | resolve (td_log); | |
1256 | resolve (td_ta_new); | |
1257 | resolve (td_ta_delete); | |
1258 | resolve (td_init); | |
1259 | resolve (td_ta_get_ph); | |
1260 | resolve (td_ta_get_nthreads); | |
1261 | resolve (td_ta_tsd_iter); | |
1262 | resolve (td_ta_thr_iter); | |
1263 | resolve (td_thr_validate); | |
1264 | resolve (td_thr_tsd); | |
1265 | resolve (td_thr_get_info); | |
1266 | resolve (td_thr_getfpregs); | |
1267 | resolve (td_thr_getxregsize); | |
1268 | resolve (td_thr_getxregs); | |
1269 | resolve (td_thr_sigsetmask); | |
1270 | resolve (td_thr_setprio); | |
1271 | resolve (td_thr_setsigpending); | |
1272 | resolve (td_thr_setfpregs); | |
1273 | resolve (td_thr_setxregs); | |
1274 | resolve (td_ta_map_id2thr); | |
1275 | resolve (td_ta_map_lwp2thr); | |
1276 | resolve (td_thr_getgregs); | |
1277 | resolve (td_thr_setgregs); | |
1278 | ||
12070676 | 1279 | complete_target_initialization (&sol_thread_ops); |
c906108c | 1280 | |
c5aa993b | 1281 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1282 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1283 | |
8d027a04 | 1284 | /* Hook into new_objfile notification. */ |
06d3b283 | 1285 | observer_attach_new_objfile (sol_thread_new_objfile); |
c906108c SS |
1286 | return; |
1287 | ||
8d027a04 MK |
1288 | die: |
1289 | fprintf_unfiltered (gdb_stderr, "\ | |
1290 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1291 | |
1292 | if (dlhandle) | |
1293 | dlclose (dlhandle); | |
1294 | ||
c906108c SS |
1295 | return; |
1296 | } |