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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
b811d2c2 | 3 | Copyright (C) 1996-2020 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 | |
30baf67b | 25 | the thr_* and pthread_* (native and POSIX respectively) interfaces. |
8d027a04 MK |
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> | |
53ce3c39 | 59 | #include <sys/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" |
76727919 | 66 | #include "observable.h" |
d1a7880c | 67 | #include "procfs.h" |
d3c1a85f JB |
68 | #include "symtab.h" |
69 | #include "minsyms.h" | |
70 | #include "objfiles.h" | |
6f4492c8 | 71 | |
d9f719f1 PA |
72 | static const target_info thread_db_target_info = { |
73 | "solaris-threads", | |
74 | N_("Solaris threads and pthread."), | |
75 | N_("Solaris threads and pthread support.") | |
76 | }; | |
77 | ||
f6ac5f3d PA |
78 | class sol_thread_target final : public target_ops |
79 | { | |
80 | public: | |
d9f719f1 PA |
81 | const target_info &info () const override |
82 | { return thread_db_target_info; } | |
f6ac5f3d | 83 | |
66b4deae PA |
84 | strata stratum () const override { return thread_stratum; } |
85 | ||
f6ac5f3d PA |
86 | void detach (inferior *, int) override; |
87 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
88 | void resume (ptid_t, int, enum gdb_signal) override; | |
89 | void mourn_inferior () override; | |
a068643d | 90 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
91 | ptid_t get_ada_task_ptid (long lwp, long thread) override; |
92 | ||
93 | void fetch_registers (struct regcache *, int) override; | |
94 | void store_registers (struct regcache *, int) override; | |
95 | ||
96 | enum target_xfer_status xfer_partial (enum target_object object, | |
97 | const char *annex, | |
98 | gdb_byte *readbuf, | |
99 | const gdb_byte *writebuf, | |
100 | ULONGEST offset, ULONGEST len, | |
101 | ULONGEST *xfered_len) override; | |
102 | ||
57810aa7 | 103 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
104 | void update_thread_list () override; |
105 | }; | |
106 | ||
107 | static sol_thread_target sol_thread_ops; | |
c906108c | 108 | |
c378eb4e | 109 | /* Prototypes for supply_gregset etc. */ |
c60c0f5f | 110 | #include "gregset.h" |
c906108c | 111 | |
8d027a04 MK |
112 | /* This struct is defined by us, but mainly used for the proc_service |
113 | interface. We don't have much use for it, except as a handy place | |
114 | to get a real PID for memory accesses. */ | |
c906108c SS |
115 | |
116 | struct ps_prochandle | |
8d027a04 MK |
117 | { |
118 | ptid_t ptid; | |
119 | }; | |
c906108c SS |
120 | |
121 | struct string_map | |
8d027a04 MK |
122 | { |
123 | int num; | |
995816ba | 124 | const char *str; |
8d027a04 | 125 | }; |
c906108c SS |
126 | |
127 | static struct ps_prochandle main_ph; | |
128 | static td_thragent_t *main_ta; | |
129 | static int sol_thread_active = 0; | |
130 | ||
8d027a04 MK |
131 | /* Default definitions: These must be defined in tm.h if they are to |
132 | be shared with a process module such as procfs. */ | |
d4f3574e | 133 | |
b196bc4c RO |
134 | /* Types of the libthread_db functions. */ |
135 | ||
136 | typedef void (td_log_ftype)(const int on_off); | |
137 | typedef td_err_e (td_ta_new_ftype)(const struct ps_prochandle *ph_p, | |
138 | td_thragent_t **ta_pp); | |
139 | typedef td_err_e (td_ta_delete_ftype)(td_thragent_t *ta_p); | |
140 | typedef td_err_e (td_init_ftype)(void); | |
141 | typedef td_err_e (td_ta_get_ph_ftype)(const td_thragent_t *ta_p, | |
142 | struct ps_prochandle **ph_pp); | |
143 | typedef td_err_e (td_ta_get_nthreads_ftype)(const td_thragent_t *ta_p, | |
144 | int *nthread_p); | |
145 | typedef td_err_e (td_ta_tsd_iter_ftype)(const td_thragent_t *ta_p, | |
146 | td_key_iter_f *cb, void *cbdata_p); | |
147 | typedef td_err_e (td_ta_thr_iter_ftype)(const td_thragent_t *ta_p, | |
148 | td_thr_iter_f *cb, void *cbdata_p, | |
149 | td_thr_state_e state, int ti_pri, | |
150 | sigset_t *ti_sigmask_p, | |
151 | unsigned ti_user_flags); | |
152 | typedef td_err_e (td_thr_validate_ftype)(const td_thrhandle_t *th_p); | |
153 | typedef td_err_e (td_thr_tsd_ftype)(const td_thrhandle_t * th_p, | |
154 | const thread_key_t key, void **data_pp); | |
155 | typedef td_err_e (td_thr_get_info_ftype)(const td_thrhandle_t *th_p, | |
156 | td_thrinfo_t *ti_p); | |
157 | typedef td_err_e (td_thr_getfpregs_ftype)(const td_thrhandle_t *th_p, | |
158 | prfpregset_t *fpregset); | |
159 | typedef td_err_e (td_thr_getxregsize_ftype)(const td_thrhandle_t *th_p, | |
160 | int *xregsize); | |
161 | typedef td_err_e (td_thr_getxregs_ftype)(const td_thrhandle_t *th_p, | |
162 | const caddr_t xregset); | |
163 | typedef td_err_e (td_thr_sigsetmask_ftype)(const td_thrhandle_t *th_p, | |
164 | const sigset_t ti_sigmask); | |
165 | typedef td_err_e (td_thr_setprio_ftype)(const td_thrhandle_t *th_p, | |
166 | const int ti_pri); | |
167 | typedef td_err_e (td_thr_setsigpending_ftype)(const td_thrhandle_t *th_p, | |
168 | const uchar_t ti_pending_flag, | |
169 | const sigset_t ti_pending); | |
170 | typedef td_err_e (td_thr_setfpregs_ftype)(const td_thrhandle_t *th_p, | |
171 | const prfpregset_t *fpregset); | |
172 | typedef td_err_e (td_thr_setxregs_ftype)(const td_thrhandle_t *th_p, | |
173 | const caddr_t xregset); | |
174 | typedef td_err_e (td_ta_map_id2thr_ftype)(const td_thragent_t *ta_p, | |
175 | thread_t tid, | |
176 | td_thrhandle_t *th_p); | |
177 | typedef td_err_e (td_ta_map_lwp2thr_ftype)(const td_thragent_t *ta_p, | |
178 | lwpid_t lwpid, | |
179 | td_thrhandle_t *th_p); | |
180 | typedef td_err_e (td_thr_getgregs_ftype)(const td_thrhandle_t *th_p, | |
181 | prgregset_t regset); | |
182 | typedef td_err_e (td_thr_setgregs_ftype)(const td_thrhandle_t *th_p, | |
183 | const prgregset_t regset); | |
184 | ||
8d027a04 MK |
185 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
186 | ||
b196bc4c RO |
187 | static td_log_ftype *p_td_log; |
188 | static td_ta_new_ftype *p_td_ta_new; | |
189 | static td_ta_delete_ftype *p_td_ta_delete; | |
190 | static td_init_ftype *p_td_init; | |
191 | static td_ta_get_ph_ftype *p_td_ta_get_ph; | |
192 | static td_ta_get_nthreads_ftype *p_td_ta_get_nthreads; | |
193 | static td_ta_tsd_iter_ftype *p_td_ta_tsd_iter; | |
194 | static td_ta_thr_iter_ftype *p_td_ta_thr_iter; | |
195 | static td_thr_validate_ftype *p_td_thr_validate; | |
196 | static td_thr_tsd_ftype *p_td_thr_tsd; | |
197 | static td_thr_get_info_ftype *p_td_thr_get_info; | |
198 | static td_thr_getfpregs_ftype *p_td_thr_getfpregs; | |
199 | static td_thr_getxregsize_ftype *p_td_thr_getxregsize; | |
200 | static td_thr_getxregs_ftype *p_td_thr_getxregs; | |
201 | static td_thr_sigsetmask_ftype *p_td_thr_sigsetmask; | |
202 | static td_thr_setprio_ftype *p_td_thr_setprio; | |
203 | static td_thr_setsigpending_ftype *p_td_thr_setsigpending; | |
204 | static td_thr_setfpregs_ftype *p_td_thr_setfpregs; | |
205 | static td_thr_setxregs_ftype *p_td_thr_setxregs; | |
206 | static td_ta_map_id2thr_ftype *p_td_ta_map_id2thr; | |
207 | static td_ta_map_lwp2thr_ftype *p_td_ta_map_lwp2thr; | |
208 | static td_thr_getgregs_ftype *p_td_thr_getgregs; | |
209 | static td_thr_setgregs_ftype *p_td_thr_setgregs; | |
8d027a04 | 210 | \f |
c906108c | 211 | |
8d027a04 MK |
212 | /* Return the libthread_db error string associated with ERRCODE. If |
213 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c | 214 | |
995816ba | 215 | static const char * |
fba45db2 | 216 | td_err_string (td_err_e errcode) |
c906108c | 217 | { |
8d027a04 | 218 | static struct string_map td_err_table[] = |
c5aa993b | 219 | { |
8d027a04 MK |
220 | { TD_OK, "generic \"call succeeded\"" }, |
221 | { TD_ERR, "generic error." }, | |
222 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
223 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
224 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
225 | { TD_BADPH, "invalid process handle" }, | |
226 | { TD_BADTH, "invalid thread handle" }, | |
227 | { TD_BADSH, "invalid synchronization handle" }, | |
228 | { TD_BADTA, "invalid thread agent" }, | |
229 | { TD_BADKEY, "invalid key" }, | |
230 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
231 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
232 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
233 | { TD_NOEVENT, "requested event is not supported" }, | |
234 | { TD_NOCAPAB, "capability not available" }, | |
235 | { TD_DBERR, "Debugger service failed" }, | |
236 | { TD_NOAPLIC, "Operation not applicable to" }, | |
237 | { TD_NOTSD, "No thread specific data for this thread" }, | |
238 | { TD_MALLOC, "Malloc failed" }, | |
239 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
240 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 241 | }; |
c906108c SS |
242 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
243 | int i; | |
244 | static char buf[50]; | |
245 | ||
246 | for (i = 0; i < td_err_size; i++) | |
247 | if (td_err_table[i].num == errcode) | |
248 | return td_err_table[i].str; | |
c5aa993b | 249 | |
8c042590 PM |
250 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db error code: %d", |
251 | errcode); | |
c906108c SS |
252 | |
253 | return buf; | |
254 | } | |
c906108c | 255 | |
30baf67b | 256 | /* Return the libthread_db state string associated with STATECODE. |
8d027a04 | 257 | If STATECODE is unknown, return an appropriate message. */ |
c906108c | 258 | |
995816ba | 259 | static const char * |
fba45db2 | 260 | td_state_string (td_thr_state_e statecode) |
c906108c | 261 | { |
8d027a04 | 262 | static struct string_map td_thr_state_table[] = |
c5aa993b | 263 | { |
8d027a04 MK |
264 | { TD_THR_ANY_STATE, "any state" }, |
265 | { TD_THR_UNKNOWN, "unknown" }, | |
266 | { TD_THR_STOPPED, "stopped" }, | |
267 | { TD_THR_RUN, "run" }, | |
268 | { TD_THR_ACTIVE, "active" }, | |
269 | { TD_THR_ZOMBIE, "zombie" }, | |
270 | { TD_THR_SLEEP, "sleep" }, | |
271 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 272 | }; |
8d027a04 MK |
273 | const int td_thr_state_table_size = |
274 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
275 | int i; |
276 | static char buf[50]; | |
277 | ||
278 | for (i = 0; i < td_thr_state_table_size; i++) | |
279 | if (td_thr_state_table[i].num == statecode) | |
280 | return td_thr_state_table[i].str; | |
c5aa993b | 281 | |
8c042590 PM |
282 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db state code: %d", |
283 | statecode); | |
c906108c SS |
284 | |
285 | return buf; | |
286 | } | |
287 | \f | |
c906108c | 288 | |
8d027a04 MK |
289 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
290 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 291 | DEFAULT_LWP. |
c906108c | 292 | |
8d027a04 | 293 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 294 | |
39f77062 KB |
295 | static ptid_t |
296 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
297 | { |
298 | td_thrinfo_t ti; | |
299 | td_thrhandle_t th; | |
300 | td_err_e val; | |
301 | ||
15a9e13e | 302 | if (thread_id.lwp_p ()) |
8d027a04 | 303 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 304 | |
8d027a04 | 305 | /* It's a thread. Convert to LWP. */ |
c906108c | 306 | |
cc6bcb54 | 307 | val = p_td_ta_map_id2thr (main_ta, thread_id.tid (), &th); |
c906108c | 308 | if (val == TD_NOTHR) |
f2907e49 | 309 | return ptid_t (-1); /* Thread must have terminated. */ |
c906108c | 310 | else if (val != TD_OK) |
8a3fe4f8 | 311 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
312 | |
313 | val = p_td_thr_get_info (&th, &ti); | |
314 | if (val == TD_NOTHR) | |
f2907e49 | 315 | return ptid_t (-1); /* Thread must have terminated. */ |
c906108c | 316 | else if (val != TD_OK) |
8a3fe4f8 | 317 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
318 | |
319 | if (ti.ti_state != TD_THR_ACTIVE) | |
320 | { | |
321 | if (default_lwp != -1) | |
f2907e49 | 322 | return ptid_t (default_lwp); |
8a3fe4f8 | 323 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
324 | td_state_string (ti.ti_state)); |
325 | } | |
326 | ||
e99b03dc | 327 | return ptid_t (thread_id.pid (), ti.ti_lid, 0); |
c906108c | 328 | } |
c906108c | 329 | |
8d027a04 MK |
330 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
331 | doesn't exists, that's an error. | |
c906108c | 332 | |
8d027a04 | 333 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 334 | |
39f77062 KB |
335 | static ptid_t |
336 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
337 | { |
338 | td_thrinfo_t ti; | |
339 | td_thrhandle_t th; | |
340 | td_err_e val; | |
341 | ||
d2a107e3 | 342 | if (lwp.tid_p ()) |
8d027a04 | 343 | return lwp; /* It's already a thread ID. */ |
c906108c | 344 | |
8d027a04 | 345 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 346 | |
28439f5e | 347 | if (!target_thread_alive (lwp)) |
f2907e49 | 348 | return ptid_t (-1); /* Must be a defunct LPW. */ |
c906108c | 349 | |
e38504b3 | 350 | val = p_td_ta_map_lwp2thr (main_ta, lwp.lwp (), &th); |
c906108c | 351 | if (val == TD_NOTHR) |
f2907e49 | 352 | return ptid_t (-1); /* Thread must have terminated. */ |
c906108c | 353 | else if (val != TD_OK) |
8a3fe4f8 | 354 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
355 | |
356 | val = p_td_thr_validate (&th); | |
357 | if (val == TD_NOTHR) | |
8d027a04 | 358 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 359 | else if (val != TD_OK) |
8a3fe4f8 | 360 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
361 | |
362 | val = p_td_thr_get_info (&th, &ti); | |
363 | if (val == TD_NOTHR) | |
f2907e49 | 364 | return ptid_t (-1); /* Thread must have terminated. */ |
c906108c | 365 | else if (val != TD_OK) |
8a3fe4f8 | 366 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c | 367 | |
e99b03dc | 368 | return ptid_t (lwp.pid (), 0 , ti.ti_tid); |
c906108c SS |
369 | } |
370 | \f | |
c906108c | 371 | |
8d027a04 | 372 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
373 | through to the layer beneath, as they don't need to do anything |
374 | specific for threads. */ | |
c906108c | 375 | |
8d027a04 MK |
376 | /* Take a program previously attached to and detaches it. The program |
377 | resumes execution and will no longer stop on signals, etc. We'd | |
378 | better not have left any breakpoints in the program or it'll die | |
379 | when it hits one. For this to work, it may be necessary for the | |
380 | process to have been previously attached. It *might* work if the | |
381 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c | 382 | |
f6ac5f3d PA |
383 | void |
384 | sol_thread_target::detach (inferior *inf, int from_tty) | |
c906108c | 385 | { |
d6ca69cd | 386 | target_ops *beneath = this->beneath (); |
28439f5e | 387 | |
2689673f | 388 | sol_thread_active = 0; |
e99b03dc | 389 | inferior_ptid = ptid_t (main_ph.ptid.pid ()); |
f6ac5f3d PA |
390 | unpush_target (this); |
391 | beneath->detach (inf, from_tty); | |
c906108c SS |
392 | } |
393 | ||
85102364 | 394 | /* Resume execution of process PTID. If STEP is nonzero, then just |
8d027a04 MK |
395 | single step it. If SIGNAL is nonzero, restart it with that signal |
396 | activated. We may have to convert PTID from a thread ID to an LWP | |
397 | ID for procfs. */ | |
c906108c | 398 | |
f6ac5f3d PA |
399 | void |
400 | sol_thread_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
c906108c | 401 | { |
2989a365 | 402 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 403 | |
e99b03dc TT |
404 | inferior_ptid = thread_to_lwp (inferior_ptid, main_ph.ptid.pid ()); |
405 | if (inferior_ptid.pid () == -1) | |
39f77062 | 406 | inferior_ptid = procfs_first_available (); |
c906108c | 407 | |
e99b03dc | 408 | if (ptid.pid () != -1) |
c906108c | 409 | { |
39f77062 | 410 | ptid_t save_ptid = ptid; |
c906108c | 411 | |
39f77062 | 412 | ptid = thread_to_lwp (ptid, -2); |
e99b03dc | 413 | if (ptid.pid () == -2) /* Inactive thread. */ |
8a3fe4f8 | 414 | error (_("This version of Solaris can't start inactive threads.")); |
e99b03dc | 415 | if (info_verbose && ptid.pid () == -1) |
8a3fe4f8 | 416 | warning (_("Specified thread %ld seems to have terminated"), |
cc6bcb54 | 417 | save_ptid.tid ()); |
c906108c SS |
418 | } |
419 | ||
d6ca69cd | 420 | beneath ()->resume (ptid, step, signo); |
c906108c SS |
421 | } |
422 | ||
2689673f | 423 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 424 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 425 | |
f6ac5f3d PA |
426 | ptid_t |
427 | sol_thread_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
428 | int options) | |
c906108c | 429 | { |
39f77062 KB |
430 | ptid_t rtnval; |
431 | ptid_t save_ptid; | |
c906108c | 432 | |
39f77062 | 433 | save_ptid = inferior_ptid; |
2989a365 | 434 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 435 | |
e99b03dc TT |
436 | inferior_ptid = thread_to_lwp (inferior_ptid, main_ph.ptid.pid ()); |
437 | if (inferior_ptid.pid () == -1) | |
39f77062 | 438 | inferior_ptid = procfs_first_available (); |
c906108c | 439 | |
e99b03dc | 440 | if (ptid.pid () != -1) |
c906108c | 441 | { |
f8740dc5 | 442 | ptid_t ptid_for_warning = ptid; |
c906108c | 443 | |
39f77062 | 444 | ptid = thread_to_lwp (ptid, -2); |
e99b03dc | 445 | if (ptid.pid () == -2) /* Inactive thread. */ |
8a3fe4f8 | 446 | error (_("This version of Solaris can't start inactive threads.")); |
e99b03dc | 447 | if (info_verbose && ptid.pid () == -1) |
8a3fe4f8 | 448 | warning (_("Specified thread %ld seems to have terminated"), |
f8740dc5 | 449 | ptid_for_warning.tid ()); |
c906108c SS |
450 | } |
451 | ||
d6ca69cd | 452 | rtnval = beneath ()->wait (ptid, ourstatus, options); |
c906108c SS |
453 | |
454 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
455 | { | |
8d027a04 | 456 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 457 | rtnval = lwp_to_thread (rtnval); |
e99b03dc | 458 | if (rtnval.pid () == -1) |
39f77062 | 459 | rtnval = save_ptid; |
c906108c | 460 | |
8d027a04 | 461 | /* See if we have a new thread. */ |
24bce9bb PA |
462 | if (rtnval.tid_p () && rtnval != save_ptid) |
463 | { | |
5b6d1e4f | 464 | thread_info *thr = find_thread_ptid (current_inferior (), rtnval); |
24bce9bb | 465 | if (thr == NULL || thr->state == THREAD_EXITED) |
5b6d1e4f PA |
466 | { |
467 | process_stratum_target *proc_target | |
468 | = current_inferior ()->process_target (); | |
469 | add_thread (proc_target, rtnval); | |
470 | } | |
24bce9bb | 471 | } |
c906108c SS |
472 | } |
473 | ||
8d027a04 MK |
474 | /* During process initialization, we may get here without the thread |
475 | package being initialized, since that can only happen after we've | |
476 | found the shared libs. */ | |
c906108c | 477 | |
c906108c SS |
478 | return rtnval; |
479 | } | |
480 | ||
f6ac5f3d PA |
481 | void |
482 | sol_thread_target::fetch_registers (struct regcache *regcache, int regnum) | |
c906108c SS |
483 | { |
484 | thread_t thread; | |
485 | td_thrhandle_t thandle; | |
486 | td_err_e val; | |
487 | prgregset_t gregset; | |
488 | prfpregset_t fpregset; | |
e71c308d DJ |
489 | gdb_gregset_t *gregset_p = &gregset; |
490 | gdb_fpregset_t *fpregset_p = &fpregset; | |
222312d3 | 491 | ptid_t ptid = regcache->ptid (); |
e71c308d | 492 | |
d2a107e3 | 493 | if (!ptid.tid_p ()) |
8d027a04 | 494 | { |
28439f5e | 495 | /* It's an LWP; pass the request on to the layer beneath. */ |
d6ca69cd | 496 | beneath ()->fetch_registers (regcache, regnum); |
c906108c SS |
497 | return; |
498 | } | |
499 | ||
bcc0c096 | 500 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
cc6bcb54 | 501 | thread = ptid.tid (); |
c906108c | 502 | if (thread == 0) |
8a3fe4f8 | 503 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
504 | |
505 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
506 | if (val != TD_OK) | |
8a3fe4f8 | 507 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
508 | td_err_string (val)); |
509 | ||
8d027a04 | 510 | /* Get the general-purpose registers. */ |
c906108c SS |
511 | |
512 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 513 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 514 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
515 | td_err_string (val)); |
516 | ||
8d027a04 MK |
517 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
518 | and %sp are saved (by a thread context switch). */ | |
c906108c | 519 | |
8d027a04 | 520 | /* And, now the floating-point registers. */ |
c906108c SS |
521 | |
522 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 523 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 524 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
525 | td_err_string (val)); |
526 | ||
8d027a04 MK |
527 | /* Note that we must call supply_gregset and supply_fpregset *after* |
528 | calling the td routines because the td routines call ps_lget* | |
529 | which affect the values stored in the registers array. */ | |
c906108c | 530 | |
e71c308d DJ |
531 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
532 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
533 | } |
534 | ||
f6ac5f3d PA |
535 | void |
536 | sol_thread_target::store_registers (struct regcache *regcache, int regnum) | |
c906108c SS |
537 | { |
538 | thread_t thread; | |
539 | td_thrhandle_t thandle; | |
540 | td_err_e val; | |
8d027a04 | 541 | prgregset_t gregset; |
c906108c | 542 | prfpregset_t fpregset; |
222312d3 | 543 | ptid_t ptid = regcache->ptid (); |
c906108c | 544 | |
d2a107e3 | 545 | if (!ptid.tid_p ()) |
8d027a04 | 546 | { |
28439f5e | 547 | /* It's an LWP; pass the request on to the layer beneath. */ |
d6ca69cd | 548 | beneath ()->store_registers (regcache, regnum); |
c906108c SS |
549 | return; |
550 | } | |
551 | ||
bcc0c096 | 552 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
cc6bcb54 | 553 | thread = ptid.tid (); |
c906108c SS |
554 | |
555 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
556 | if (val != TD_OK) | |
8a3fe4f8 | 557 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
558 | td_err_string (val)); |
559 | ||
8d027a04 MK |
560 | if (regnum != -1) |
561 | { | |
c60c0f5f | 562 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 563 | if (val != TD_OK) |
8a3fe4f8 | 564 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
565 | td_err_string (val)); |
566 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
567 | if (val != TD_OK) | |
8a3fe4f8 | 568 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c | 569 | td_err_string (val)); |
c906108c SS |
570 | } |
571 | ||
56be3814 UW |
572 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
573 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 574 | |
c60c0f5f | 575 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 576 | if (val != TD_OK) |
8a3fe4f8 | 577 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
578 | td_err_string (val)); |
579 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
580 | if (val != TD_OK) | |
8a3fe4f8 | 581 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c | 582 | td_err_string (val)); |
c906108c SS |
583 | } |
584 | ||
8d027a04 MK |
585 | /* Perform partial transfers on OBJECT. See target_read_partial and |
586 | target_write_partial for details of each variant. One, and only | |
587 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 | 588 | |
f6ac5f3d PA |
589 | enum target_xfer_status |
590 | sol_thread_target::xfer_partial (enum target_object object, | |
591 | const char *annex, gdb_byte *readbuf, | |
592 | const gdb_byte *writebuf, | |
593 | ULONGEST offset, ULONGEST len, | |
594 | ULONGEST *xfered_len) | |
6034ae49 | 595 | { |
2989a365 | 596 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6034ae49 | 597 | |
d2a107e3 | 598 | if (inferior_ptid.tid_p () || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
599 | { |
600 | /* It's either a thread or an LWP that isn't alive. Any live | |
601 | LWP will do so use the first available. | |
602 | ||
603 | NOTE: We don't need to call switch_to_thread; we're just | |
604 | reading memory. */ | |
605 | inferior_ptid = procfs_first_available (); | |
606 | } | |
6034ae49 | 607 | |
d6ca69cd PA |
608 | return beneath ()->xfer_partial (object, annex, readbuf, |
609 | writebuf, offset, len, xfered_len); | |
6034ae49 RM |
610 | } |
611 | ||
c906108c | 612 | static void |
28439f5e | 613 | check_for_thread_db (void) |
c906108c | 614 | { |
28439f5e PA |
615 | td_err_e err; |
616 | ptid_t ptid; | |
c906108c | 617 | |
9a362b9a | 618 | /* Don't attempt to use thread_db for remote targets. */ |
f6ac5f3d | 619 | if (!(target_can_run () || core_bfd)) |
9a362b9a PA |
620 | return; |
621 | ||
28439f5e PA |
622 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
623 | if (p_td_ta_new == NULL) | |
624 | return; | |
c906108c | 625 | |
28439f5e PA |
626 | if (sol_thread_active) |
627 | /* Nothing to do. The thread library was already detected and the | |
628 | target vector was already activated. */ | |
629 | return; | |
c906108c | 630 | |
28439f5e PA |
631 | /* Now, initialize libthread_db. This needs to be done after the |
632 | shared libraries are located because it needs information from | |
633 | the user's thread library. */ | |
c906108c | 634 | |
28439f5e PA |
635 | err = p_td_init (); |
636 | if (err != TD_OK) | |
637 | { | |
638 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
639 | return; | |
640 | } | |
c906108c | 641 | |
28439f5e PA |
642 | /* Now attempt to open a connection to the thread library. */ |
643 | err = p_td_ta_new (&main_ph, &main_ta); | |
644 | switch (err) | |
c906108c | 645 | { |
28439f5e PA |
646 | case TD_NOLIBTHREAD: |
647 | /* No thread library was detected. */ | |
648 | break; | |
2689673f | 649 | |
28439f5e PA |
650 | case TD_OK: |
651 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 652 | |
28439f5e | 653 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 654 | push_target (&sol_thread_ops); |
28439f5e | 655 | sol_thread_active = 1; |
c906108c | 656 | |
28439f5e | 657 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f | 658 | ptid = lwp_to_thread (inferior_ptid); |
e99b03dc | 659 | if (ptid.pid () != -1) |
28439f5e PA |
660 | inferior_ptid = ptid; |
661 | ||
e8032dde | 662 | target_update_thread_list (); |
28439f5e PA |
663 | break; |
664 | ||
665 | default: | |
666 | warning (_("Cannot initialize thread debugging library: %s"), | |
667 | td_err_string (err)); | |
668 | break; | |
c906108c SS |
669 | } |
670 | } | |
671 | ||
8d027a04 MK |
672 | /* This routine is called whenever a new symbol table is read in, or |
673 | when all symbol tables are removed. libthread_db can only be | |
674 | initialized when it finds the right variables in libthread.so. | |
675 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 676 | the library gets mapped and the symbol table is read in. */ |
c906108c | 677 | |
06d3b283 | 678 | static void |
fba45db2 | 679 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 680 | { |
28439f5e PA |
681 | if (objfile != NULL) |
682 | check_for_thread_db (); | |
c906108c SS |
683 | } |
684 | ||
685 | /* Clean up after the inferior dies. */ | |
686 | ||
f6ac5f3d PA |
687 | void |
688 | sol_thread_target::mourn_inferior () | |
c906108c | 689 | { |
d6ca69cd | 690 | target_ops *beneath = this->beneath (); |
28439f5e | 691 | |
2689673f | 692 | sol_thread_active = 0; |
c906108c | 693 | |
f6ac5f3d | 694 | unpush_target (this); |
c906108c | 695 | |
f6ac5f3d | 696 | beneath->mourn_inferior (); |
c906108c SS |
697 | } |
698 | ||
8d027a04 MK |
699 | /* Return true if PTID is still active in the inferior. */ |
700 | ||
57810aa7 | 701 | bool |
f6ac5f3d | 702 | sol_thread_target::thread_alive (ptid_t ptid) |
c906108c | 703 | { |
d2a107e3 | 704 | if (ptid.tid_p ()) |
c906108c | 705 | { |
8d027a04 | 706 | /* It's a (user-level) thread. */ |
c906108c SS |
707 | td_err_e val; |
708 | td_thrhandle_t th; | |
39f77062 | 709 | int pid; |
c906108c | 710 | |
cc6bcb54 | 711 | pid = ptid.tid (); |
c475f569 RO |
712 | val = p_td_ta_map_id2thr (main_ta, pid, &th); |
713 | if (val != TD_OK) | |
57810aa7 | 714 | return false; /* Thread not found. */ |
c475f569 RO |
715 | val = p_td_thr_validate (&th); |
716 | if (val != TD_OK) | |
57810aa7 PA |
717 | return false; /* Thread not valid. */ |
718 | return true; /* Known thread. */ | |
c906108c | 719 | } |
c5aa993b | 720 | else |
c906108c | 721 | { |
28439f5e | 722 | /* It's an LPW; pass the request on to the layer below. */ |
d6ca69cd | 723 | return beneath ()->thread_alive (ptid); |
c906108c SS |
724 | } |
725 | } | |
726 | ||
c906108c | 727 | \f |
8d027a04 MK |
728 | /* These routines implement the lower half of the thread_db interface, |
729 | i.e. the ps_* routines. */ | |
c906108c | 730 | |
8d027a04 MK |
731 | /* The next four routines are called by libthread_db to tell us to |
732 | stop and stop a particular process or lwp. Since GDB ensures that | |
733 | these are all stopped by the time we call anything in thread_db, | |
734 | these routines need to do nothing. */ | |
c906108c | 735 | |
8d027a04 | 736 | /* Process stop. */ |
d4f3574e | 737 | |
c906108c | 738 | ps_err_e |
281c4447 | 739 | ps_pstop (struct ps_prochandle *ph) |
c906108c SS |
740 | { |
741 | return PS_OK; | |
742 | } | |
743 | ||
8d027a04 | 744 | /* Process continue. */ |
d4f3574e | 745 | |
c906108c | 746 | ps_err_e |
281c4447 | 747 | ps_pcontinue (struct ps_prochandle *ph) |
c906108c SS |
748 | { |
749 | return PS_OK; | |
750 | } | |
751 | ||
8d027a04 | 752 | /* LWP stop. */ |
d4f3574e | 753 | |
c906108c | 754 | ps_err_e |
281c4447 | 755 | ps_lstop (struct ps_prochandle *ph, lwpid_t lwpid) |
c906108c SS |
756 | { |
757 | return PS_OK; | |
758 | } | |
759 | ||
8d027a04 | 760 | /* LWP continue. */ |
d4f3574e | 761 | |
c906108c | 762 | ps_err_e |
281c4447 | 763 | ps_lcontinue (struct ps_prochandle *ph, lwpid_t lwpid) |
c906108c SS |
764 | { |
765 | return PS_OK; | |
766 | } | |
767 | ||
d4f3574e SS |
768 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
769 | ||
c906108c | 770 | ps_err_e |
281c4447 RO |
771 | ps_pglobal_lookup (struct ps_prochandle *ph, const char *ld_object_name, |
772 | const char *ld_symbol_name, psaddr_t *ld_symbol_addr) | |
c906108c | 773 | { |
3b7344d5 | 774 | struct bound_minimal_symbol ms; |
c906108c SS |
775 | |
776 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
3b7344d5 | 777 | if (!ms.minsym) |
c906108c SS |
778 | return PS_NOSYM; |
779 | ||
d3c1a85f | 780 | *ld_symbol_addr = BMSYMBOL_VALUE_ADDRESS (ms); |
c906108c SS |
781 | return PS_OK; |
782 | } | |
783 | ||
784 | /* Common routine for reading and writing memory. */ | |
785 | ||
786 | static ps_err_e | |
281c4447 | 787 | rw_common (int dowrite, const struct ps_prochandle *ph, psaddr_t addr, |
019c1128 | 788 | gdb_byte *buf, int size) |
c906108c | 789 | { |
28439f5e | 790 | int ret; |
c906108c | 791 | |
2989a365 | 792 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 793 | |
d2a107e3 | 794 | if (inferior_ptid.tid_p () || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
795 | { |
796 | /* It's either a thread or an LWP that isn't alive. Any live | |
797 | LWP will do so use the first available. | |
798 | ||
799 | NOTE: We don't need to call switch_to_thread; we're just | |
800 | reading memory. */ | |
801 | inferior_ptid = procfs_first_available (); | |
802 | } | |
c906108c | 803 | |
23e04971 MS |
804 | #if defined (__sparcv9) |
805 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
806 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 807 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
808 | addr &= 0xffffffff; |
809 | #endif | |
810 | ||
28439f5e | 811 | if (dowrite) |
0c4f667c | 812 | ret = target_write_memory (addr, (gdb_byte *) buf, size); |
28439f5e | 813 | else |
0c4f667c | 814 | ret = target_read_memory (addr, (gdb_byte *) buf, size); |
c906108c | 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 |
281c4447 | 822 | ps_pdread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
c906108c | 823 | { |
b196bc4c | 824 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
825 | } |
826 | ||
d4f3574e SS |
827 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
828 | ||
c906108c | 829 | ps_err_e |
281c4447 RO |
830 | ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr, |
831 | const void *buf, size_t size) | |
c906108c | 832 | { |
019c1128 | 833 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
834 | } |
835 | ||
d4f3574e SS |
836 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
837 | ||
c906108c | 838 | ps_err_e |
281c4447 | 839 | ps_ptread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
c906108c | 840 | { |
b196bc4c | 841 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
842 | } |
843 | ||
d4f3574e SS |
844 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
845 | ||
c906108c | 846 | ps_err_e |
281c4447 RO |
847 | ps_ptwrite (struct ps_prochandle *ph, psaddr_t addr, |
848 | const void *buf, size_t size) | |
c906108c | 849 | { |
019c1128 | 850 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
851 | } |
852 | ||
8d027a04 | 853 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
854 | |
855 | ps_err_e | |
281c4447 | 856 | ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c | 857 | { |
e99b03dc | 858 | ptid_t ptid = ptid_t (inferior_ptid.pid (), lwpid, 0); |
3e00d44f | 859 | struct regcache *regcache |
5b6d1e4f PA |
860 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
861 | ptid, target_gdbarch ()); | |
c5aa993b | 862 | |
28439f5e | 863 | target_fetch_registers (regcache, -1); |
594f7785 | 864 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c | 865 | |
c906108c SS |
866 | return PS_OK; |
867 | } | |
868 | ||
8d027a04 | 869 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
870 | |
871 | ps_err_e | |
281c4447 | 872 | ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, |
c906108c SS |
873 | const prgregset_t gregset) |
874 | { | |
e99b03dc | 875 | ptid_t ptid = ptid_t (inferior_ptid.pid (), lwpid, 0); |
3e00d44f | 876 | struct regcache *regcache |
5b6d1e4f PA |
877 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
878 | ptid, target_gdbarch ()); | |
c5aa993b | 879 | |
594f7785 | 880 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 881 | target_store_registers (regcache, -1); |
c906108c | 882 | |
c906108c SS |
883 | return PS_OK; |
884 | } | |
885 | ||
d4f3574e SS |
886 | /* Log a message (sends to gdb_stderr). */ |
887 | ||
c906108c | 888 | void |
8d027a04 | 889 | ps_plog (const char *fmt, ...) |
c906108c SS |
890 | { |
891 | va_list args; | |
892 | ||
893 | va_start (args, fmt); | |
894 | ||
895 | vfprintf_filtered (gdb_stderr, fmt, args); | |
896 | } | |
897 | ||
c1357578 JB |
898 | /* Get size of extra register set. Currently a noop. */ |
899 | ||
900 | ps_err_e | |
281c4447 | 901 | ps_lgetxregsize (struct ps_prochandle *ph, lwpid_t lwpid, int *xregsize) |
c1357578 JB |
902 | { |
903 | return PS_OK; | |
904 | } | |
905 | ||
906 | /* Get extra register set. Currently a noop. */ | |
907 | ||
908 | ps_err_e | |
281c4447 | 909 | ps_lgetxregs (struct ps_prochandle *ph, lwpid_t lwpid, caddr_t xregset) |
c1357578 JB |
910 | { |
911 | return PS_OK; | |
912 | } | |
913 | ||
914 | /* Set extra register set. Currently a noop. */ | |
915 | ||
916 | ps_err_e | |
281c4447 | 917 | ps_lsetxregs (struct ps_prochandle *ph, lwpid_t lwpid, caddr_t xregset) |
c1357578 JB |
918 | { |
919 | return PS_OK; | |
920 | } | |
921 | ||
8d027a04 | 922 | /* Get floating-point registers for LWP. */ |
c906108c SS |
923 | |
924 | ps_err_e | |
281c4447 | 925 | ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
8d027a04 | 926 | prfpregset_t *fpregset) |
c906108c | 927 | { |
e99b03dc | 928 | ptid_t ptid = ptid_t (inferior_ptid.pid (), lwpid, 0); |
3e00d44f | 929 | struct regcache *regcache |
5b6d1e4f PA |
930 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
931 | ptid, target_gdbarch ()); | |
c906108c | 932 | |
28439f5e | 933 | target_fetch_registers (regcache, -1); |
594f7785 | 934 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c | 935 | |
c906108c SS |
936 | return PS_OK; |
937 | } | |
938 | ||
c378eb4e | 939 | /* Set floating-point regs for LWP. */ |
c906108c SS |
940 | |
941 | ps_err_e | |
281c4447 | 942 | ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
c5aa993b | 943 | const prfpregset_t * fpregset) |
c906108c | 944 | { |
e99b03dc | 945 | ptid_t ptid = ptid_t (inferior_ptid.pid (), lwpid, 0); |
3e00d44f | 946 | struct regcache *regcache |
5b6d1e4f PA |
947 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
948 | ptid, target_gdbarch ()); | |
c5aa993b | 949 | |
594f7785 | 950 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 951 | target_store_registers (regcache, -1); |
c906108c | 952 | |
c906108c SS |
953 | return PS_OK; |
954 | } | |
955 | ||
8d027a04 MK |
956 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
957 | BFD to do this. There might be a more Solaris-specific | |
958 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
959 | |
960 | ps_err_e | |
281c4447 | 961 | ps_pdmodel (struct ps_prochandle *ph, int *data_model) |
23e04971 MS |
962 | { |
963 | if (exec_bfd == 0) | |
a95ac8b6 PS |
964 | *data_model = PR_MODEL_UNKNOWN; |
965 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
966 | *data_model = PR_MODEL_ILP32; |
967 | else | |
968 | *data_model = PR_MODEL_LP64; | |
969 | ||
970 | return PS_OK; | |
971 | } | |
972 | ||
965b60ee | 973 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 974 | |
965b60ee JB |
975 | /* Reads the local descriptor table of a LWP. |
976 | ||
977 | This function is necessary on x86-solaris only. Without it, the loading | |
978 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 979 | |
c906108c | 980 | ps_err_e |
c475f569 | 981 | ps_lgetLDT (struct ps_prochandle *ph, lwpid_t lwpid, struct ssd *pldt) /* ARI: editCase function */ |
c906108c | 982 | { |
8d027a04 | 983 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
05e28a7b | 984 | struct ssd *ret; |
c906108c | 985 | |
8d027a04 MK |
986 | /* FIXME: can't I get the process ID from the prochandle or |
987 | something? */ | |
2f09097b | 988 | |
e99b03dc | 989 | if (inferior_ptid.pid () <= 0 || lwpid <= 0) |
2f09097b ND |
990 | return PS_BADLID; |
991 | ||
e99b03dc | 992 | ret = procfs_find_LDT_entry (ptid_t (inferior_ptid.pid (), |
dfd4cc63 | 993 | lwpid, 0)); |
05e28a7b | 994 | if (ret) |
c906108c | 995 | { |
05e28a7b AC |
996 | memcpy (pldt, ret, sizeof (struct ssd)); |
997 | return PS_OK; | |
c906108c | 998 | } |
8d027a04 MK |
999 | else |
1000 | /* LDT not found. */ | |
c906108c | 1001 | return PS_ERR; |
c5aa993b | 1002 | } |
965b60ee | 1003 | #endif |
c906108c | 1004 | \f |
8d027a04 MK |
1005 | |
1006 | /* Convert PTID to printable form. */ | |
c906108c | 1007 | |
a068643d | 1008 | std::string |
f6ac5f3d | 1009 | sol_thread_target::pid_to_str (ptid_t ptid) |
c906108c | 1010 | { |
d2a107e3 | 1011 | if (ptid.tid_p ()) |
c906108c | 1012 | { |
39f77062 | 1013 | ptid_t lwp; |
c906108c | 1014 | |
39f77062 | 1015 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1016 | |
e99b03dc | 1017 | if (lwp.pid () == -1) |
a068643d TT |
1018 | return string_printf ("Thread %ld (defunct)", |
1019 | ptid.tid ()); | |
e99b03dc | 1020 | else if (lwp.pid () != -2) |
a068643d TT |
1021 | return string_printf ("Thread %ld (LWP %ld)", |
1022 | ptid.tid (), lwp.lwp ()); | |
c906108c | 1023 | else |
a068643d TT |
1024 | return string_printf ("Thread %ld ", |
1025 | ptid.tid ()); | |
c906108c | 1026 | } |
e38504b3 | 1027 | else if (ptid.lwp () != 0) |
a068643d | 1028 | return string_printf ("LWP %ld ", ptid.lwp ()); |
c906108c | 1029 | else |
a068643d | 1030 | return string_printf ("process %d ", ptid.pid ()); |
c906108c SS |
1031 | } |
1032 | \f | |
1033 | ||
e8032dde | 1034 | /* Worker bee for update_thread_list. Callback function that gets |
8d027a04 | 1035 | called once per user-level thread (i.e. not for LWP's). */ |
c906108c SS |
1036 | |
1037 | static int | |
e8032dde | 1038 | sol_update_thread_list_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1039 | { |
1040 | td_err_e retval; | |
1041 | td_thrinfo_t ti; | |
c906108c | 1042 | |
8d027a04 MK |
1043 | retval = p_td_thr_get_info (th, &ti); |
1044 | if (retval != TD_OK) | |
1045 | return -1; | |
1046 | ||
24bce9bb | 1047 | ptid_t ptid = ptid_t (inferior_ptid.pid (), 0, ti.ti_tid); |
5b6d1e4f | 1048 | thread_info *thr = find_thread_ptid (current_inferior (), ptid); |
24bce9bb | 1049 | if (thr == NULL || thr->state == THREAD_EXITED) |
5b6d1e4f PA |
1050 | { |
1051 | process_stratum_target *proc_target | |
1052 | = current_inferior ()->process_target (); | |
1053 | add_thread (proc_target, ptid); | |
1054 | } | |
c906108c SS |
1055 | |
1056 | return 0; | |
1057 | } | |
1058 | ||
f6ac5f3d PA |
1059 | void |
1060 | sol_thread_target::update_thread_list () | |
c906108c | 1061 | { |
e8032dde PA |
1062 | /* Delete dead threads. */ |
1063 | prune_threads (); | |
1064 | ||
1065 | /* Find any new LWP's. */ | |
d6ca69cd | 1066 | beneath ()->update_thread_list (); |
8d027a04 MK |
1067 | |
1068 | /* Then find any new user-level threads. */ | |
e8032dde | 1069 | p_td_ta_thr_iter (main_ta, sol_update_thread_list_callback, (void *) 0, |
c906108c SS |
1070 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1071 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1072 | } | |
1073 | ||
8d027a04 MK |
1074 | /* Worker bee for the "info sol-thread" command. This is a callback |
1075 | function that gets called once for each Solaris user-level thread | |
1076 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1077 | that we can think of. */ | |
c906108c | 1078 | |
c5aa993b | 1079 | static int |
fba45db2 | 1080 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1081 | { |
1082 | td_err_e ret; | |
1083 | td_thrinfo_t ti; | |
c906108c | 1084 | |
8d027a04 MK |
1085 | ret = p_td_thr_get_info (th, &ti); |
1086 | if (ret == TD_OK) | |
c906108c | 1087 | { |
c5aa993b JM |
1088 | printf_filtered ("%s thread #%d, lwp %d, ", |
1089 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1090 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1091 | switch (ti.ti_state) |
1092 | { | |
c906108c | 1093 | default: |
c5aa993b JM |
1094 | case TD_THR_UNKNOWN: |
1095 | printf_filtered ("<unknown state>"); | |
1096 | break; | |
1097 | case TD_THR_STOPPED: | |
1098 | printf_filtered ("(stopped)"); | |
1099 | break; | |
1100 | case TD_THR_RUN: | |
1101 | printf_filtered ("(run) "); | |
1102 | break; | |
1103 | case TD_THR_ACTIVE: | |
1104 | printf_filtered ("(active) "); | |
1105 | break; | |
1106 | case TD_THR_ZOMBIE: | |
1107 | printf_filtered ("(zombie) "); | |
1108 | break; | |
1109 | case TD_THR_SLEEP: | |
1110 | printf_filtered ("(asleep) "); | |
1111 | break; | |
1112 | case TD_THR_STOPPED_ASLEEP: | |
1113 | printf_filtered ("(stopped asleep)"); | |
1114 | break; | |
1115 | } | |
8d027a04 | 1116 | /* Print thr_create start function. */ |
c906108c | 1117 | if (ti.ti_startfunc != 0) |
4ce44c66 | 1118 | { |
5812197c JB |
1119 | const struct bound_minimal_symbol msym |
1120 | = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1121 | ||
17e760ae JB |
1122 | printf_filtered (" startfunc=%s", |
1123 | msym.minsym | |
c9d95fa3 | 1124 | ? msym.minsym->print_name () |
17e760ae | 1125 | : paddress (target_gdbarch (), ti.ti_startfunc)); |
4ce44c66 | 1126 | } |
c906108c | 1127 | |
8d027a04 | 1128 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1129 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 | 1130 | { |
5812197c JB |
1131 | const struct bound_minimal_symbol msym |
1132 | = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1133 | ||
17e760ae JB |
1134 | printf_filtered (" sleepfunc=%s", |
1135 | msym.minsym | |
c9d95fa3 | 1136 | ? msym.minsym->print_name () |
17e760ae | 1137 | : paddress (target_gdbarch (), ti.ti_pc)); |
4ce44c66 | 1138 | } |
c906108c | 1139 | |
c0f5f490 | 1140 | printf_filtered ("\n"); |
c906108c SS |
1141 | } |
1142 | else | |
8a3fe4f8 | 1143 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1144 | |
c5aa993b | 1145 | return 0; |
c906108c SS |
1146 | } |
1147 | ||
8d027a04 MK |
1148 | /* List some state about each Solaris user-level thread in the |
1149 | inferior. */ | |
c906108c SS |
1150 | |
1151 | static void | |
e8020e54 | 1152 | info_solthreads (const char *args, int from_tty) |
c906108c | 1153 | { |
e8020e54 | 1154 | p_td_ta_thr_iter (main_ta, info_cb, (void *) args, |
c906108c SS |
1155 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1156 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1157 | } | |
c906108c | 1158 | |
3caf13b4 JB |
1159 | /* Callback routine used to find a thread based on the TID part of |
1160 | its PTID. */ | |
1161 | ||
1162 | static int | |
1163 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1164 | { | |
1165 | long *tid = (long *) data; | |
1166 | ||
cc6bcb54 | 1167 | if (thread->ptid.tid () == *tid) |
3caf13b4 JB |
1168 | return 1; |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
f6ac5f3d PA |
1173 | ptid_t |
1174 | sol_thread_target::get_ada_task_ptid (long lwp, long thread) | |
3caf13b4 JB |
1175 | { |
1176 | struct thread_info *thread_info = | |
1177 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1178 | ||
1179 | if (thread_info == NULL) | |
1180 | { | |
1181 | /* The list of threads is probably not up to date. Find any | |
1182 | thread that is missing from the list, and try again. */ | |
f6ac5f3d | 1183 | update_thread_list (); |
3caf13b4 JB |
1184 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, |
1185 | &thread); | |
1186 | } | |
1187 | ||
1188 | gdb_assert (thread_info != NULL); | |
1189 | ||
1190 | return (thread_info->ptid); | |
1191 | } | |
1192 | ||
6c265988 | 1193 | void _initialize_sol_thread (); |
c906108c | 1194 | void |
6c265988 | 1195 | _initialize_sol_thread () |
c906108c SS |
1196 | { |
1197 | void *dlhandle; | |
1198 | ||
c906108c SS |
1199 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); |
1200 | if (!dlhandle) | |
1201 | goto die; | |
1202 | ||
1203 | #define resolve(X) \ | |
b196bc4c | 1204 | if (!(p_##X = (X ## _ftype *) dlsym (dlhandle, #X))) \ |
c906108c SS |
1205 | goto die; |
1206 | ||
1207 | resolve (td_log); | |
1208 | resolve (td_ta_new); | |
1209 | resolve (td_ta_delete); | |
1210 | resolve (td_init); | |
1211 | resolve (td_ta_get_ph); | |
1212 | resolve (td_ta_get_nthreads); | |
1213 | resolve (td_ta_tsd_iter); | |
1214 | resolve (td_ta_thr_iter); | |
1215 | resolve (td_thr_validate); | |
1216 | resolve (td_thr_tsd); | |
1217 | resolve (td_thr_get_info); | |
1218 | resolve (td_thr_getfpregs); | |
1219 | resolve (td_thr_getxregsize); | |
1220 | resolve (td_thr_getxregs); | |
1221 | resolve (td_thr_sigsetmask); | |
1222 | resolve (td_thr_setprio); | |
1223 | resolve (td_thr_setsigpending); | |
1224 | resolve (td_thr_setfpregs); | |
1225 | resolve (td_thr_setxregs); | |
1226 | resolve (td_ta_map_id2thr); | |
1227 | resolve (td_ta_map_lwp2thr); | |
1228 | resolve (td_thr_getgregs); | |
1229 | resolve (td_thr_setgregs); | |
1230 | ||
c5aa993b | 1231 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1232 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1233 | |
8d027a04 | 1234 | /* Hook into new_objfile notification. */ |
76727919 | 1235 | gdb::observers::new_objfile.attach (sol_thread_new_objfile); |
c906108c SS |
1236 | return; |
1237 | ||
8d027a04 MK |
1238 | die: |
1239 | fprintf_unfiltered (gdb_stderr, "\ | |
1240 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1241 | |
1242 | if (dlhandle) | |
1243 | dlclose (dlhandle); | |
1244 | ||
c906108c SS |
1245 | return; |
1246 | } |