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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 | 86 | void detach (inferior *, int) override; |
b60cea74 | 87 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
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, | |
b60cea74 | 428 | target_wait_flags options) |
c906108c | 429 | { |
e99b03dc | 430 | if (ptid.pid () != -1) |
c906108c | 431 | { |
f8740dc5 | 432 | ptid_t ptid_for_warning = ptid; |
c906108c | 433 | |
39f77062 | 434 | ptid = thread_to_lwp (ptid, -2); |
e99b03dc | 435 | if (ptid.pid () == -2) /* Inactive thread. */ |
8a3fe4f8 | 436 | error (_("This version of Solaris can't start inactive threads.")); |
e99b03dc | 437 | if (info_verbose && ptid.pid () == -1) |
8a3fe4f8 | 438 | warning (_("Specified thread %ld seems to have terminated"), |
f8740dc5 | 439 | ptid_for_warning.tid ()); |
c906108c SS |
440 | } |
441 | ||
f8098322 | 442 | ptid_t rtnval = beneath ()->wait (ptid, ourstatus, options); |
c906108c SS |
443 | |
444 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
445 | { | |
8d027a04 | 446 | /* Map the LWP of interest back to the appropriate thread ID. */ |
f8098322 PA |
447 | ptid_t thr_ptid = lwp_to_thread (rtnval); |
448 | if (thr_ptid.pid () != -1) | |
449 | rtnval = thr_ptid; | |
c906108c | 450 | |
8d027a04 | 451 | /* See if we have a new thread. */ |
f8098322 | 452 | if (rtnval.tid_p ()) |
24bce9bb | 453 | { |
5b6d1e4f | 454 | thread_info *thr = find_thread_ptid (current_inferior (), rtnval); |
24bce9bb | 455 | if (thr == NULL || thr->state == THREAD_EXITED) |
5b6d1e4f PA |
456 | { |
457 | process_stratum_target *proc_target | |
458 | = current_inferior ()->process_target (); | |
459 | add_thread (proc_target, rtnval); | |
460 | } | |
24bce9bb | 461 | } |
c906108c SS |
462 | } |
463 | ||
8d027a04 MK |
464 | /* During process initialization, we may get here without the thread |
465 | package being initialized, since that can only happen after we've | |
466 | found the shared libs. */ | |
c906108c | 467 | |
c906108c SS |
468 | return rtnval; |
469 | } | |
470 | ||
f6ac5f3d PA |
471 | void |
472 | sol_thread_target::fetch_registers (struct regcache *regcache, int regnum) | |
c906108c SS |
473 | { |
474 | thread_t thread; | |
475 | td_thrhandle_t thandle; | |
476 | td_err_e val; | |
477 | prgregset_t gregset; | |
478 | prfpregset_t fpregset; | |
e71c308d DJ |
479 | gdb_gregset_t *gregset_p = &gregset; |
480 | gdb_fpregset_t *fpregset_p = &fpregset; | |
222312d3 | 481 | ptid_t ptid = regcache->ptid (); |
e71c308d | 482 | |
d2a107e3 | 483 | if (!ptid.tid_p ()) |
8d027a04 | 484 | { |
28439f5e | 485 | /* It's an LWP; pass the request on to the layer beneath. */ |
d6ca69cd | 486 | beneath ()->fetch_registers (regcache, regnum); |
c906108c SS |
487 | return; |
488 | } | |
489 | ||
bcc0c096 | 490 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
cc6bcb54 | 491 | thread = ptid.tid (); |
c906108c | 492 | if (thread == 0) |
8a3fe4f8 | 493 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
494 | |
495 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
496 | if (val != TD_OK) | |
8a3fe4f8 | 497 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
498 | td_err_string (val)); |
499 | ||
8d027a04 | 500 | /* Get the general-purpose registers. */ |
c906108c SS |
501 | |
502 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 503 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 504 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
505 | td_err_string (val)); |
506 | ||
8d027a04 MK |
507 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
508 | and %sp are saved (by a thread context switch). */ | |
c906108c | 509 | |
8d027a04 | 510 | /* And, now the floating-point registers. */ |
c906108c SS |
511 | |
512 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 513 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 514 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
515 | td_err_string (val)); |
516 | ||
8d027a04 MK |
517 | /* Note that we must call supply_gregset and supply_fpregset *after* |
518 | calling the td routines because the td routines call ps_lget* | |
519 | which affect the values stored in the registers array. */ | |
c906108c | 520 | |
e71c308d DJ |
521 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
522 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
523 | } |
524 | ||
f6ac5f3d PA |
525 | void |
526 | sol_thread_target::store_registers (struct regcache *regcache, int regnum) | |
c906108c SS |
527 | { |
528 | thread_t thread; | |
529 | td_thrhandle_t thandle; | |
530 | td_err_e val; | |
8d027a04 | 531 | prgregset_t gregset; |
c906108c | 532 | prfpregset_t fpregset; |
222312d3 | 533 | ptid_t ptid = regcache->ptid (); |
c906108c | 534 | |
d2a107e3 | 535 | if (!ptid.tid_p ()) |
8d027a04 | 536 | { |
28439f5e | 537 | /* It's an LWP; pass the request on to the layer beneath. */ |
d6ca69cd | 538 | beneath ()->store_registers (regcache, regnum); |
c906108c SS |
539 | return; |
540 | } | |
541 | ||
bcc0c096 | 542 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
cc6bcb54 | 543 | thread = ptid.tid (); |
c906108c SS |
544 | |
545 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
546 | if (val != TD_OK) | |
8a3fe4f8 | 547 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
548 | td_err_string (val)); |
549 | ||
8d027a04 MK |
550 | if (regnum != -1) |
551 | { | |
c60c0f5f | 552 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 553 | if (val != TD_OK) |
8a3fe4f8 | 554 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
555 | td_err_string (val)); |
556 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
557 | if (val != TD_OK) | |
8a3fe4f8 | 558 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c | 559 | td_err_string (val)); |
c906108c SS |
560 | } |
561 | ||
56be3814 UW |
562 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
563 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 564 | |
c60c0f5f | 565 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 566 | if (val != TD_OK) |
8a3fe4f8 | 567 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
568 | td_err_string (val)); |
569 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
570 | if (val != TD_OK) | |
8a3fe4f8 | 571 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c | 572 | td_err_string (val)); |
c906108c SS |
573 | } |
574 | ||
8d027a04 MK |
575 | /* Perform partial transfers on OBJECT. See target_read_partial and |
576 | target_write_partial for details of each variant. One, and only | |
577 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 | 578 | |
f6ac5f3d PA |
579 | enum target_xfer_status |
580 | sol_thread_target::xfer_partial (enum target_object object, | |
581 | const char *annex, gdb_byte *readbuf, | |
582 | const gdb_byte *writebuf, | |
583 | ULONGEST offset, ULONGEST len, | |
584 | ULONGEST *xfered_len) | |
6034ae49 | 585 | { |
2989a365 | 586 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6034ae49 | 587 | |
d2a107e3 | 588 | if (inferior_ptid.tid_p () || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
589 | { |
590 | /* It's either a thread or an LWP that isn't alive. Any live | |
dda83cd7 | 591 | LWP will do so use the first available. |
8d027a04 MK |
592 | |
593 | NOTE: We don't need to call switch_to_thread; we're just | |
594 | reading memory. */ | |
595 | inferior_ptid = procfs_first_available (); | |
596 | } | |
6034ae49 | 597 | |
d6ca69cd PA |
598 | return beneath ()->xfer_partial (object, annex, readbuf, |
599 | writebuf, offset, len, xfered_len); | |
6034ae49 RM |
600 | } |
601 | ||
c906108c | 602 | static void |
28439f5e | 603 | check_for_thread_db (void) |
c906108c | 604 | { |
28439f5e PA |
605 | td_err_e err; |
606 | ptid_t ptid; | |
c906108c | 607 | |
9a362b9a | 608 | /* Don't attempt to use thread_db for remote targets. */ |
f6ac5f3d | 609 | if (!(target_can_run () || core_bfd)) |
9a362b9a PA |
610 | return; |
611 | ||
28439f5e PA |
612 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
613 | if (p_td_ta_new == NULL) | |
614 | return; | |
c906108c | 615 | |
28439f5e PA |
616 | if (sol_thread_active) |
617 | /* Nothing to do. The thread library was already detected and the | |
618 | target vector was already activated. */ | |
619 | return; | |
c906108c | 620 | |
28439f5e PA |
621 | /* Now, initialize libthread_db. This needs to be done after the |
622 | shared libraries are located because it needs information from | |
623 | the user's thread library. */ | |
c906108c | 624 | |
28439f5e PA |
625 | err = p_td_init (); |
626 | if (err != TD_OK) | |
627 | { | |
628 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
629 | return; | |
630 | } | |
c906108c | 631 | |
28439f5e PA |
632 | /* Now attempt to open a connection to the thread library. */ |
633 | err = p_td_ta_new (&main_ph, &main_ta); | |
634 | switch (err) | |
c906108c | 635 | { |
28439f5e PA |
636 | case TD_NOLIBTHREAD: |
637 | /* No thread library was detected. */ | |
638 | break; | |
2689673f | 639 | |
28439f5e PA |
640 | case TD_OK: |
641 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 642 | |
28439f5e | 643 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 644 | push_target (&sol_thread_ops); |
28439f5e | 645 | sol_thread_active = 1; |
c906108c | 646 | |
28439f5e | 647 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f | 648 | ptid = lwp_to_thread (inferior_ptid); |
e99b03dc | 649 | if (ptid.pid () != -1) |
28439f5e PA |
650 | inferior_ptid = ptid; |
651 | ||
e8032dde | 652 | target_update_thread_list (); |
28439f5e PA |
653 | break; |
654 | ||
655 | default: | |
656 | warning (_("Cannot initialize thread debugging library: %s"), | |
657 | td_err_string (err)); | |
658 | break; | |
c906108c SS |
659 | } |
660 | } | |
661 | ||
8d027a04 MK |
662 | /* This routine is called whenever a new symbol table is read in, or |
663 | when all symbol tables are removed. libthread_db can only be | |
664 | initialized when it finds the right variables in libthread.so. | |
665 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 666 | the library gets mapped and the symbol table is read in. */ |
c906108c | 667 | |
06d3b283 | 668 | static void |
fba45db2 | 669 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 670 | { |
28439f5e PA |
671 | if (objfile != NULL) |
672 | check_for_thread_db (); | |
c906108c SS |
673 | } |
674 | ||
675 | /* Clean up after the inferior dies. */ | |
676 | ||
f6ac5f3d PA |
677 | void |
678 | sol_thread_target::mourn_inferior () | |
c906108c | 679 | { |
d6ca69cd | 680 | target_ops *beneath = this->beneath (); |
28439f5e | 681 | |
2689673f | 682 | sol_thread_active = 0; |
c906108c | 683 | |
f6ac5f3d | 684 | unpush_target (this); |
c906108c | 685 | |
f6ac5f3d | 686 | beneath->mourn_inferior (); |
c906108c SS |
687 | } |
688 | ||
8d027a04 MK |
689 | /* Return true if PTID is still active in the inferior. */ |
690 | ||
57810aa7 | 691 | bool |
f6ac5f3d | 692 | sol_thread_target::thread_alive (ptid_t ptid) |
c906108c | 693 | { |
d2a107e3 | 694 | if (ptid.tid_p ()) |
c906108c | 695 | { |
8d027a04 | 696 | /* It's a (user-level) thread. */ |
c906108c SS |
697 | td_err_e val; |
698 | td_thrhandle_t th; | |
39f77062 | 699 | int pid; |
c906108c | 700 | |
cc6bcb54 | 701 | pid = ptid.tid (); |
c475f569 RO |
702 | val = p_td_ta_map_id2thr (main_ta, pid, &th); |
703 | if (val != TD_OK) | |
57810aa7 | 704 | return false; /* Thread not found. */ |
c475f569 RO |
705 | val = p_td_thr_validate (&th); |
706 | if (val != TD_OK) | |
57810aa7 PA |
707 | return false; /* Thread not valid. */ |
708 | return true; /* Known thread. */ | |
c906108c | 709 | } |
c5aa993b | 710 | else |
c906108c | 711 | { |
28439f5e | 712 | /* It's an LPW; pass the request on to the layer below. */ |
d6ca69cd | 713 | return beneath ()->thread_alive (ptid); |
c906108c SS |
714 | } |
715 | } | |
716 | ||
c906108c | 717 | \f |
8d027a04 MK |
718 | /* These routines implement the lower half of the thread_db interface, |
719 | i.e. the ps_* routines. */ | |
c906108c | 720 | |
8d027a04 MK |
721 | /* The next four routines are called by libthread_db to tell us to |
722 | stop and stop a particular process or lwp. Since GDB ensures that | |
723 | these are all stopped by the time we call anything in thread_db, | |
724 | these routines need to do nothing. */ | |
c906108c | 725 | |
8d027a04 | 726 | /* Process stop. */ |
d4f3574e | 727 | |
c906108c | 728 | ps_err_e |
281c4447 | 729 | ps_pstop (struct ps_prochandle *ph) |
c906108c SS |
730 | { |
731 | return PS_OK; | |
732 | } | |
733 | ||
8d027a04 | 734 | /* Process continue. */ |
d4f3574e | 735 | |
c906108c | 736 | ps_err_e |
281c4447 | 737 | ps_pcontinue (struct ps_prochandle *ph) |
c906108c SS |
738 | { |
739 | return PS_OK; | |
740 | } | |
741 | ||
8d027a04 | 742 | /* LWP stop. */ |
d4f3574e | 743 | |
c906108c | 744 | ps_err_e |
281c4447 | 745 | ps_lstop (struct ps_prochandle *ph, lwpid_t lwpid) |
c906108c SS |
746 | { |
747 | return PS_OK; | |
748 | } | |
749 | ||
8d027a04 | 750 | /* LWP continue. */ |
d4f3574e | 751 | |
c906108c | 752 | ps_err_e |
281c4447 | 753 | ps_lcontinue (struct ps_prochandle *ph, lwpid_t lwpid) |
c906108c SS |
754 | { |
755 | return PS_OK; | |
756 | } | |
757 | ||
d4f3574e SS |
758 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
759 | ||
c906108c | 760 | ps_err_e |
281c4447 RO |
761 | ps_pglobal_lookup (struct ps_prochandle *ph, const char *ld_object_name, |
762 | const char *ld_symbol_name, psaddr_t *ld_symbol_addr) | |
c906108c | 763 | { |
3b7344d5 | 764 | struct bound_minimal_symbol ms; |
c906108c SS |
765 | |
766 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
3b7344d5 | 767 | if (!ms.minsym) |
c906108c SS |
768 | return PS_NOSYM; |
769 | ||
d3c1a85f | 770 | *ld_symbol_addr = BMSYMBOL_VALUE_ADDRESS (ms); |
c906108c SS |
771 | return PS_OK; |
772 | } | |
773 | ||
774 | /* Common routine for reading and writing memory. */ | |
775 | ||
776 | static ps_err_e | |
281c4447 | 777 | rw_common (int dowrite, const struct ps_prochandle *ph, psaddr_t addr, |
019c1128 | 778 | gdb_byte *buf, int size) |
c906108c | 779 | { |
28439f5e | 780 | int ret; |
c906108c | 781 | |
2989a365 | 782 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 783 | |
d2a107e3 | 784 | if (inferior_ptid.tid_p () || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
785 | { |
786 | /* It's either a thread or an LWP that isn't alive. Any live | |
dda83cd7 | 787 | LWP will do so use the first available. |
8d027a04 MK |
788 | |
789 | NOTE: We don't need to call switch_to_thread; we're just | |
790 | reading memory. */ | |
791 | inferior_ptid = procfs_first_available (); | |
792 | } | |
c906108c | 793 | |
23e04971 MS |
794 | #if defined (__sparcv9) |
795 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
796 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
7e10abd1 | 797 | if (bfd_get_arch_size (current_program_space->exec_bfd ()) == 32) |
23e04971 MS |
798 | addr &= 0xffffffff; |
799 | #endif | |
800 | ||
28439f5e | 801 | if (dowrite) |
0c4f667c | 802 | ret = target_write_memory (addr, (gdb_byte *) buf, size); |
28439f5e | 803 | else |
0c4f667c | 804 | ret = target_read_memory (addr, (gdb_byte *) buf, size); |
c906108c | 805 | |
28439f5e | 806 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
807 | } |
808 | ||
d4f3574e SS |
809 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
810 | ||
c906108c | 811 | ps_err_e |
281c4447 | 812 | ps_pdread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
c906108c | 813 | { |
b196bc4c | 814 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
815 | } |
816 | ||
d4f3574e SS |
817 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
818 | ||
c906108c | 819 | ps_err_e |
281c4447 RO |
820 | ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr, |
821 | const void *buf, size_t size) | |
c906108c | 822 | { |
019c1128 | 823 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
824 | } |
825 | ||
d4f3574e SS |
826 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
827 | ||
c906108c | 828 | ps_err_e |
281c4447 | 829 | ps_ptread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
c906108c | 830 | { |
b196bc4c | 831 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
832 | } |
833 | ||
d4f3574e SS |
834 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
835 | ||
c906108c | 836 | ps_err_e |
281c4447 RO |
837 | ps_ptwrite (struct ps_prochandle *ph, psaddr_t addr, |
838 | const void *buf, size_t size) | |
c906108c | 839 | { |
019c1128 | 840 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
841 | } |
842 | ||
8d027a04 | 843 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
844 | |
845 | ps_err_e | |
281c4447 | 846 | ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c | 847 | { |
f8098322 | 848 | ptid_t ptid = ptid_t (current_inferior ()->pid, lwpid, 0); |
3e00d44f | 849 | struct regcache *regcache |
5b6d1e4f PA |
850 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
851 | ptid, target_gdbarch ()); | |
c5aa993b | 852 | |
28439f5e | 853 | target_fetch_registers (regcache, -1); |
594f7785 | 854 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c | 855 | |
c906108c SS |
856 | return PS_OK; |
857 | } | |
858 | ||
8d027a04 | 859 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
860 | |
861 | ps_err_e | |
281c4447 | 862 | ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, |
c906108c SS |
863 | const prgregset_t gregset) |
864 | { | |
f8098322 | 865 | ptid_t ptid = ptid_t (current_inferior ()->pid, lwpid, 0); |
3e00d44f | 866 | struct regcache *regcache |
5b6d1e4f PA |
867 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
868 | ptid, target_gdbarch ()); | |
c5aa993b | 869 | |
594f7785 | 870 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 871 | target_store_registers (regcache, -1); |
c906108c | 872 | |
c906108c SS |
873 | return PS_OK; |
874 | } | |
875 | ||
d4f3574e SS |
876 | /* Log a message (sends to gdb_stderr). */ |
877 | ||
c906108c | 878 | void |
8d027a04 | 879 | ps_plog (const char *fmt, ...) |
c906108c SS |
880 | { |
881 | va_list args; | |
882 | ||
883 | va_start (args, fmt); | |
884 | ||
885 | vfprintf_filtered (gdb_stderr, fmt, args); | |
886 | } | |
887 | ||
c1357578 JB |
888 | /* Get size of extra register set. Currently a noop. */ |
889 | ||
890 | ps_err_e | |
281c4447 | 891 | ps_lgetxregsize (struct ps_prochandle *ph, lwpid_t lwpid, int *xregsize) |
c1357578 JB |
892 | { |
893 | return PS_OK; | |
894 | } | |
895 | ||
896 | /* Get extra register set. Currently a noop. */ | |
897 | ||
898 | ps_err_e | |
281c4447 | 899 | ps_lgetxregs (struct ps_prochandle *ph, lwpid_t lwpid, caddr_t xregset) |
c1357578 JB |
900 | { |
901 | return PS_OK; | |
902 | } | |
903 | ||
904 | /* Set extra register set. Currently a noop. */ | |
905 | ||
906 | ps_err_e | |
281c4447 | 907 | ps_lsetxregs (struct ps_prochandle *ph, lwpid_t lwpid, caddr_t xregset) |
c1357578 JB |
908 | { |
909 | return PS_OK; | |
910 | } | |
911 | ||
8d027a04 | 912 | /* Get floating-point registers for LWP. */ |
c906108c SS |
913 | |
914 | ps_err_e | |
281c4447 | 915 | ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
8d027a04 | 916 | prfpregset_t *fpregset) |
c906108c | 917 | { |
f8098322 | 918 | ptid_t ptid = ptid_t (current_inferior ()->pid, lwpid, 0); |
3e00d44f | 919 | struct regcache *regcache |
5b6d1e4f PA |
920 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
921 | ptid, target_gdbarch ()); | |
c906108c | 922 | |
28439f5e | 923 | target_fetch_registers (regcache, -1); |
594f7785 | 924 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c | 925 | |
c906108c SS |
926 | return PS_OK; |
927 | } | |
928 | ||
c378eb4e | 929 | /* Set floating-point regs for LWP. */ |
c906108c SS |
930 | |
931 | ps_err_e | |
281c4447 | 932 | ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
c5aa993b | 933 | const prfpregset_t * fpregset) |
c906108c | 934 | { |
f8098322 | 935 | ptid_t ptid = ptid_t (current_inferior ()->pid, lwpid, 0); |
3e00d44f | 936 | struct regcache *regcache |
5b6d1e4f PA |
937 | = get_thread_arch_regcache (current_inferior ()->process_target (), |
938 | ptid, target_gdbarch ()); | |
c5aa993b | 939 | |
594f7785 | 940 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 941 | target_store_registers (regcache, -1); |
c906108c | 942 | |
c906108c SS |
943 | return PS_OK; |
944 | } | |
945 | ||
8d027a04 MK |
946 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
947 | BFD to do this. There might be a more Solaris-specific | |
948 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
949 | |
950 | ps_err_e | |
281c4447 | 951 | ps_pdmodel (struct ps_prochandle *ph, int *data_model) |
23e04971 | 952 | { |
7e10abd1 | 953 | if (current_program_space->exec_bfd () == 0) |
a95ac8b6 | 954 | *data_model = PR_MODEL_UNKNOWN; |
7e10abd1 | 955 | else if (bfd_get_arch_size (current_program_space->exec_bfd ()) == 32) |
23e04971 MS |
956 | *data_model = PR_MODEL_ILP32; |
957 | else | |
958 | *data_model = PR_MODEL_LP64; | |
959 | ||
960 | return PS_OK; | |
961 | } | |
c906108c | 962 | \f |
8d027a04 MK |
963 | |
964 | /* Convert PTID to printable form. */ | |
c906108c | 965 | |
a068643d | 966 | std::string |
f6ac5f3d | 967 | sol_thread_target::pid_to_str (ptid_t ptid) |
c906108c | 968 | { |
d2a107e3 | 969 | if (ptid.tid_p ()) |
c906108c | 970 | { |
39f77062 | 971 | ptid_t lwp; |
c906108c | 972 | |
39f77062 | 973 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 974 | |
e99b03dc | 975 | if (lwp.pid () == -1) |
a068643d TT |
976 | return string_printf ("Thread %ld (defunct)", |
977 | ptid.tid ()); | |
e99b03dc | 978 | else if (lwp.pid () != -2) |
a068643d TT |
979 | return string_printf ("Thread %ld (LWP %ld)", |
980 | ptid.tid (), lwp.lwp ()); | |
c906108c | 981 | else |
a068643d TT |
982 | return string_printf ("Thread %ld ", |
983 | ptid.tid ()); | |
c906108c | 984 | } |
e38504b3 | 985 | else if (ptid.lwp () != 0) |
a068643d | 986 | return string_printf ("LWP %ld ", ptid.lwp ()); |
c906108c | 987 | else |
a068643d | 988 | return string_printf ("process %d ", ptid.pid ()); |
c906108c SS |
989 | } |
990 | \f | |
991 | ||
e8032dde | 992 | /* Worker bee for update_thread_list. Callback function that gets |
8d027a04 | 993 | called once per user-level thread (i.e. not for LWP's). */ |
c906108c SS |
994 | |
995 | static int | |
e8032dde | 996 | sol_update_thread_list_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
997 | { |
998 | td_err_e retval; | |
999 | td_thrinfo_t ti; | |
c906108c | 1000 | |
8d027a04 MK |
1001 | retval = p_td_thr_get_info (th, &ti); |
1002 | if (retval != TD_OK) | |
1003 | return -1; | |
1004 | ||
f8098322 | 1005 | ptid_t ptid = ptid_t (current_inferior ()->pid, 0, ti.ti_tid); |
5b6d1e4f | 1006 | thread_info *thr = find_thread_ptid (current_inferior (), ptid); |
24bce9bb | 1007 | if (thr == NULL || thr->state == THREAD_EXITED) |
5b6d1e4f PA |
1008 | { |
1009 | process_stratum_target *proc_target | |
1010 | = current_inferior ()->process_target (); | |
1011 | add_thread (proc_target, ptid); | |
1012 | } | |
c906108c SS |
1013 | |
1014 | return 0; | |
1015 | } | |
1016 | ||
f6ac5f3d PA |
1017 | void |
1018 | sol_thread_target::update_thread_list () | |
c906108c | 1019 | { |
e8032dde PA |
1020 | /* Delete dead threads. */ |
1021 | prune_threads (); | |
1022 | ||
1023 | /* Find any new LWP's. */ | |
d6ca69cd | 1024 | beneath ()->update_thread_list (); |
8d027a04 MK |
1025 | |
1026 | /* Then find any new user-level threads. */ | |
e8032dde | 1027 | p_td_ta_thr_iter (main_ta, sol_update_thread_list_callback, (void *) 0, |
c906108c SS |
1028 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1029 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1030 | } | |
1031 | ||
8d027a04 MK |
1032 | /* Worker bee for the "info sol-thread" command. This is a callback |
1033 | function that gets called once for each Solaris user-level thread | |
1034 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1035 | that we can think of. */ | |
c906108c | 1036 | |
c5aa993b | 1037 | static int |
fba45db2 | 1038 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1039 | { |
1040 | td_err_e ret; | |
1041 | td_thrinfo_t ti; | |
c906108c | 1042 | |
8d027a04 MK |
1043 | ret = p_td_thr_get_info (th, &ti); |
1044 | if (ret == TD_OK) | |
c906108c | 1045 | { |
c5aa993b JM |
1046 | printf_filtered ("%s thread #%d, lwp %d, ", |
1047 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1048 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1049 | switch (ti.ti_state) |
1050 | { | |
c906108c | 1051 | default: |
c5aa993b JM |
1052 | case TD_THR_UNKNOWN: |
1053 | printf_filtered ("<unknown state>"); | |
1054 | break; | |
1055 | case TD_THR_STOPPED: | |
1056 | printf_filtered ("(stopped)"); | |
1057 | break; | |
1058 | case TD_THR_RUN: | |
1059 | printf_filtered ("(run) "); | |
1060 | break; | |
1061 | case TD_THR_ACTIVE: | |
1062 | printf_filtered ("(active) "); | |
1063 | break; | |
1064 | case TD_THR_ZOMBIE: | |
1065 | printf_filtered ("(zombie) "); | |
1066 | break; | |
1067 | case TD_THR_SLEEP: | |
1068 | printf_filtered ("(asleep) "); | |
1069 | break; | |
1070 | case TD_THR_STOPPED_ASLEEP: | |
1071 | printf_filtered ("(stopped asleep)"); | |
1072 | break; | |
1073 | } | |
8d027a04 | 1074 | /* Print thr_create start function. */ |
c906108c | 1075 | if (ti.ti_startfunc != 0) |
4ce44c66 | 1076 | { |
5812197c JB |
1077 | const struct bound_minimal_symbol msym |
1078 | = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1079 | ||
17e760ae JB |
1080 | printf_filtered (" startfunc=%s", |
1081 | msym.minsym | |
c9d95fa3 | 1082 | ? msym.minsym->print_name () |
17e760ae | 1083 | : paddress (target_gdbarch (), ti.ti_startfunc)); |
4ce44c66 | 1084 | } |
c906108c | 1085 | |
8d027a04 | 1086 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1087 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 | 1088 | { |
5812197c JB |
1089 | const struct bound_minimal_symbol msym |
1090 | = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1091 | ||
17e760ae JB |
1092 | printf_filtered (" sleepfunc=%s", |
1093 | msym.minsym | |
c9d95fa3 | 1094 | ? msym.minsym->print_name () |
17e760ae | 1095 | : paddress (target_gdbarch (), ti.ti_pc)); |
4ce44c66 | 1096 | } |
c906108c | 1097 | |
c0f5f490 | 1098 | printf_filtered ("\n"); |
c906108c SS |
1099 | } |
1100 | else | |
8a3fe4f8 | 1101 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1102 | |
c5aa993b | 1103 | return 0; |
c906108c SS |
1104 | } |
1105 | ||
8d027a04 MK |
1106 | /* List some state about each Solaris user-level thread in the |
1107 | inferior. */ | |
c906108c SS |
1108 | |
1109 | static void | |
e8020e54 | 1110 | info_solthreads (const char *args, int from_tty) |
c906108c | 1111 | { |
e8020e54 | 1112 | p_td_ta_thr_iter (main_ta, info_cb, (void *) args, |
c906108c SS |
1113 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1114 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1115 | } | |
c906108c | 1116 | |
3caf13b4 JB |
1117 | /* Callback routine used to find a thread based on the TID part of |
1118 | its PTID. */ | |
1119 | ||
1120 | static int | |
1121 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1122 | { | |
1123 | long *tid = (long *) data; | |
1124 | ||
cc6bcb54 | 1125 | if (thread->ptid.tid () == *tid) |
3caf13b4 JB |
1126 | return 1; |
1127 | ||
1128 | return 0; | |
1129 | } | |
1130 | ||
f6ac5f3d PA |
1131 | ptid_t |
1132 | sol_thread_target::get_ada_task_ptid (long lwp, long thread) | |
3caf13b4 JB |
1133 | { |
1134 | struct thread_info *thread_info = | |
1135 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1136 | ||
1137 | if (thread_info == NULL) | |
1138 | { | |
1139 | /* The list of threads is probably not up to date. Find any | |
dda83cd7 | 1140 | thread that is missing from the list, and try again. */ |
f6ac5f3d | 1141 | update_thread_list (); |
3caf13b4 | 1142 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, |
dda83cd7 | 1143 | &thread); |
3caf13b4 JB |
1144 | } |
1145 | ||
1146 | gdb_assert (thread_info != NULL); | |
1147 | ||
1148 | return (thread_info->ptid); | |
1149 | } | |
1150 | ||
6c265988 | 1151 | void _initialize_sol_thread (); |
c906108c | 1152 | void |
6c265988 | 1153 | _initialize_sol_thread () |
c906108c SS |
1154 | { |
1155 | void *dlhandle; | |
1156 | ||
c906108c SS |
1157 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); |
1158 | if (!dlhandle) | |
1159 | goto die; | |
1160 | ||
1161 | #define resolve(X) \ | |
b196bc4c | 1162 | if (!(p_##X = (X ## _ftype *) dlsym (dlhandle, #X))) \ |
c906108c SS |
1163 | goto die; |
1164 | ||
1165 | resolve (td_log); | |
1166 | resolve (td_ta_new); | |
1167 | resolve (td_ta_delete); | |
1168 | resolve (td_init); | |
1169 | resolve (td_ta_get_ph); | |
1170 | resolve (td_ta_get_nthreads); | |
1171 | resolve (td_ta_tsd_iter); | |
1172 | resolve (td_ta_thr_iter); | |
1173 | resolve (td_thr_validate); | |
1174 | resolve (td_thr_tsd); | |
1175 | resolve (td_thr_get_info); | |
1176 | resolve (td_thr_getfpregs); | |
1177 | resolve (td_thr_getxregsize); | |
1178 | resolve (td_thr_getxregs); | |
1179 | resolve (td_thr_sigsetmask); | |
1180 | resolve (td_thr_setprio); | |
1181 | resolve (td_thr_setsigpending); | |
1182 | resolve (td_thr_setfpregs); | |
1183 | resolve (td_thr_setxregs); | |
1184 | resolve (td_ta_map_id2thr); | |
1185 | resolve (td_ta_map_lwp2thr); | |
1186 | resolve (td_thr_getgregs); | |
1187 | resolve (td_thr_setgregs); | |
1188 | ||
c5aa993b | 1189 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1190 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1191 | |
8d027a04 | 1192 | /* Hook into new_objfile notification. */ |
76727919 | 1193 | gdb::observers::new_objfile.attach (sol_thread_new_objfile); |
c906108c SS |
1194 | return; |
1195 | ||
8d027a04 MK |
1196 | die: |
1197 | fprintf_unfiltered (gdb_stderr, "\ | |
1198 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1199 | |
1200 | if (dlhandle) | |
1201 | dlclose (dlhandle); | |
1202 | ||
c906108c SS |
1203 | return; |
1204 | } |