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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
e2882c85 | 3 | Copyright (C) 1996-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | /* This module implements a sort of half target that sits between the | |
8d027a04 MK |
21 | machine-independent parts of GDB and the /proc interface (procfs.c) |
22 | to provide access to the Solaris user-mode thread implementation. | |
23 | ||
24 | Solaris threads are true user-mode threads, which are invoked via | |
25 | the thr_* and pthread_* (native and POSIX respectivly) interfaces. | |
26 | These are mostly implemented in user-space, with all thread context | |
27 | kept in various structures that live in the user's heap. These | |
28 | should not be confused with lightweight processes (LWPs), which are | |
29 | implemented by the kernel, and scheduled without explicit | |
30 | intervention by the process. | |
31 | ||
32 | Just to confuse things a little, Solaris threads (both native and | |
33 | POSIX) are actually implemented using LWPs. In general, there are | |
34 | going to be more threads than LWPs. There is no fixed | |
35 | correspondence between a thread and an LWP. When a thread wants to | |
36 | run, it gets scheduled onto the first available LWP and can | |
37 | therefore migrate from one LWP to another as time goes on. A | |
c906108c SS |
38 | sleeping thread may not be associated with an LWP at all! |
39 | ||
8d027a04 MK |
40 | To make it possible to mess with threads, Sun provides a library |
41 | called libthread_db.so.1 (not to be confused with | |
42 | libthread_db.so.0, which doesn't have a published interface). This | |
43 | interface has an upper part, which it provides, and a lower part | |
44 | which we provide. The upper part consists of the td_* routines, | |
45 | which allow us to find all the threads, query their state, etc... | |
46 | The lower part consists of all of the ps_*, which are used by the | |
47 | td_* routines to read/write memory, manipulate LWPs, lookup | |
48 | symbols, etc... The ps_* routines actually do most of their work | |
49 | by calling functions in procfs.c. */ | |
c906108c SS |
50 | |
51 | #include "defs.h" | |
52 | #include <thread.h> | |
53 | #include <proc_service.h> | |
54 | #include <thread_db.h> | |
55 | #include "gdbthread.h" | |
56 | #include "target.h" | |
57 | #include "inferior.h" | |
58 | #include <fcntl.h> | |
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 | |
f6ac5f3d PA |
72 | class sol_thread_target final : public target_ops |
73 | { | |
74 | public: | |
75 | sol_thread_target () | |
76 | { this->to_stratum = thread_stratum; } | |
77 | ||
78 | const char *shortname () override | |
79 | { return "solaris-threads"; } | |
80 | const char *longname () override | |
81 | { return _("Solaris threads and pthread."); } | |
82 | const char *doc () override | |
83 | { return _("Solaris threads and pthread support."); } | |
84 | ||
85 | void detach (inferior *, int) override; | |
86 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
87 | void resume (ptid_t, int, enum gdb_signal) override; | |
88 | void mourn_inferior () override; | |
89 | const char *pid_to_str (ptid_t) override; | |
90 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
91 | ||
92 | void fetch_registers (struct regcache *, int) override; | |
93 | void store_registers (struct regcache *, int) override; | |
94 | ||
95 | enum target_xfer_status xfer_partial (enum target_object object, | |
96 | const char *annex, | |
97 | gdb_byte *readbuf, | |
98 | const gdb_byte *writebuf, | |
99 | ULONGEST offset, ULONGEST len, | |
100 | ULONGEST *xfered_len) override; | |
101 | ||
57810aa7 | 102 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
103 | void update_thread_list () override; |
104 | }; | |
105 | ||
106 | static sol_thread_target sol_thread_ops; | |
c906108c | 107 | |
c378eb4e | 108 | /* Prototypes for supply_gregset etc. */ |
c60c0f5f | 109 | #include "gregset.h" |
c906108c | 110 | |
8d027a04 MK |
111 | /* This struct is defined by us, but mainly used for the proc_service |
112 | interface. We don't have much use for it, except as a handy place | |
113 | to get a real PID for memory accesses. */ | |
c906108c SS |
114 | |
115 | struct ps_prochandle | |
8d027a04 MK |
116 | { |
117 | ptid_t ptid; | |
118 | }; | |
c906108c SS |
119 | |
120 | struct string_map | |
8d027a04 MK |
121 | { |
122 | int num; | |
995816ba | 123 | const char *str; |
8d027a04 | 124 | }; |
c906108c SS |
125 | |
126 | static struct ps_prochandle main_ph; | |
127 | static td_thragent_t *main_ta; | |
128 | static int sol_thread_active = 0; | |
129 | ||
8d027a04 MK |
130 | /* Default definitions: These must be defined in tm.h if they are to |
131 | be shared with a process module such as procfs. */ | |
d4f3574e | 132 | |
b196bc4c RO |
133 | /* Types of the libthread_db functions. */ |
134 | ||
135 | typedef void (td_log_ftype)(const int on_off); | |
136 | typedef td_err_e (td_ta_new_ftype)(const struct ps_prochandle *ph_p, | |
137 | td_thragent_t **ta_pp); | |
138 | typedef td_err_e (td_ta_delete_ftype)(td_thragent_t *ta_p); | |
139 | typedef td_err_e (td_init_ftype)(void); | |
140 | typedef td_err_e (td_ta_get_ph_ftype)(const td_thragent_t *ta_p, | |
141 | struct ps_prochandle **ph_pp); | |
142 | typedef td_err_e (td_ta_get_nthreads_ftype)(const td_thragent_t *ta_p, | |
143 | int *nthread_p); | |
144 | typedef td_err_e (td_ta_tsd_iter_ftype)(const td_thragent_t *ta_p, | |
145 | td_key_iter_f *cb, void *cbdata_p); | |
146 | typedef td_err_e (td_ta_thr_iter_ftype)(const td_thragent_t *ta_p, | |
147 | td_thr_iter_f *cb, void *cbdata_p, | |
148 | td_thr_state_e state, int ti_pri, | |
149 | sigset_t *ti_sigmask_p, | |
150 | unsigned ti_user_flags); | |
151 | typedef td_err_e (td_thr_validate_ftype)(const td_thrhandle_t *th_p); | |
152 | typedef td_err_e (td_thr_tsd_ftype)(const td_thrhandle_t * th_p, | |
153 | const thread_key_t key, void **data_pp); | |
154 | typedef td_err_e (td_thr_get_info_ftype)(const td_thrhandle_t *th_p, | |
155 | td_thrinfo_t *ti_p); | |
156 | typedef td_err_e (td_thr_getfpregs_ftype)(const td_thrhandle_t *th_p, | |
157 | prfpregset_t *fpregset); | |
158 | typedef td_err_e (td_thr_getxregsize_ftype)(const td_thrhandle_t *th_p, | |
159 | int *xregsize); | |
160 | typedef td_err_e (td_thr_getxregs_ftype)(const td_thrhandle_t *th_p, | |
161 | const caddr_t xregset); | |
162 | typedef td_err_e (td_thr_sigsetmask_ftype)(const td_thrhandle_t *th_p, | |
163 | const sigset_t ti_sigmask); | |
164 | typedef td_err_e (td_thr_setprio_ftype)(const td_thrhandle_t *th_p, | |
165 | const int ti_pri); | |
166 | typedef td_err_e (td_thr_setsigpending_ftype)(const td_thrhandle_t *th_p, | |
167 | const uchar_t ti_pending_flag, | |
168 | const sigset_t ti_pending); | |
169 | typedef td_err_e (td_thr_setfpregs_ftype)(const td_thrhandle_t *th_p, | |
170 | const prfpregset_t *fpregset); | |
171 | typedef td_err_e (td_thr_setxregs_ftype)(const td_thrhandle_t *th_p, | |
172 | const caddr_t xregset); | |
173 | typedef td_err_e (td_ta_map_id2thr_ftype)(const td_thragent_t *ta_p, | |
174 | thread_t tid, | |
175 | td_thrhandle_t *th_p); | |
176 | typedef td_err_e (td_ta_map_lwp2thr_ftype)(const td_thragent_t *ta_p, | |
177 | lwpid_t lwpid, | |
178 | td_thrhandle_t *th_p); | |
179 | typedef td_err_e (td_thr_getgregs_ftype)(const td_thrhandle_t *th_p, | |
180 | prgregset_t regset); | |
181 | typedef td_err_e (td_thr_setgregs_ftype)(const td_thrhandle_t *th_p, | |
182 | const prgregset_t regset); | |
183 | ||
8d027a04 MK |
184 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
185 | ||
b196bc4c RO |
186 | static td_log_ftype *p_td_log; |
187 | static td_ta_new_ftype *p_td_ta_new; | |
188 | static td_ta_delete_ftype *p_td_ta_delete; | |
189 | static td_init_ftype *p_td_init; | |
190 | static td_ta_get_ph_ftype *p_td_ta_get_ph; | |
191 | static td_ta_get_nthreads_ftype *p_td_ta_get_nthreads; | |
192 | static td_ta_tsd_iter_ftype *p_td_ta_tsd_iter; | |
193 | static td_ta_thr_iter_ftype *p_td_ta_thr_iter; | |
194 | static td_thr_validate_ftype *p_td_thr_validate; | |
195 | static td_thr_tsd_ftype *p_td_thr_tsd; | |
196 | static td_thr_get_info_ftype *p_td_thr_get_info; | |
197 | static td_thr_getfpregs_ftype *p_td_thr_getfpregs; | |
198 | static td_thr_getxregsize_ftype *p_td_thr_getxregsize; | |
199 | static td_thr_getxregs_ftype *p_td_thr_getxregs; | |
200 | static td_thr_sigsetmask_ftype *p_td_thr_sigsetmask; | |
201 | static td_thr_setprio_ftype *p_td_thr_setprio; | |
202 | static td_thr_setsigpending_ftype *p_td_thr_setsigpending; | |
203 | static td_thr_setfpregs_ftype *p_td_thr_setfpregs; | |
204 | static td_thr_setxregs_ftype *p_td_thr_setxregs; | |
205 | static td_ta_map_id2thr_ftype *p_td_ta_map_id2thr; | |
206 | static td_ta_map_lwp2thr_ftype *p_td_ta_map_lwp2thr; | |
207 | static td_thr_getgregs_ftype *p_td_thr_getgregs; | |
208 | static td_thr_setgregs_ftype *p_td_thr_setgregs; | |
8d027a04 | 209 | \f |
c906108c | 210 | |
8d027a04 MK |
211 | /* Return the libthread_db error string associated with ERRCODE. If |
212 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c | 213 | |
995816ba | 214 | static const char * |
fba45db2 | 215 | td_err_string (td_err_e errcode) |
c906108c | 216 | { |
8d027a04 | 217 | static struct string_map td_err_table[] = |
c5aa993b | 218 | { |
8d027a04 MK |
219 | { TD_OK, "generic \"call succeeded\"" }, |
220 | { TD_ERR, "generic error." }, | |
221 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
222 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
223 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
224 | { TD_BADPH, "invalid process handle" }, | |
225 | { TD_BADTH, "invalid thread handle" }, | |
226 | { TD_BADSH, "invalid synchronization handle" }, | |
227 | { TD_BADTA, "invalid thread agent" }, | |
228 | { TD_BADKEY, "invalid key" }, | |
229 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
230 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
231 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
232 | { TD_NOEVENT, "requested event is not supported" }, | |
233 | { TD_NOCAPAB, "capability not available" }, | |
234 | { TD_DBERR, "Debugger service failed" }, | |
235 | { TD_NOAPLIC, "Operation not applicable to" }, | |
236 | { TD_NOTSD, "No thread specific data for this thread" }, | |
237 | { TD_MALLOC, "Malloc failed" }, | |
238 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
239 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 240 | }; |
c906108c SS |
241 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
242 | int i; | |
243 | static char buf[50]; | |
244 | ||
245 | for (i = 0; i < td_err_size; i++) | |
246 | if (td_err_table[i].num == errcode) | |
247 | return td_err_table[i].str; | |
c5aa993b | 248 | |
8c042590 PM |
249 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db error code: %d", |
250 | errcode); | |
c906108c SS |
251 | |
252 | return buf; | |
253 | } | |
c906108c | 254 | |
b021a221 | 255 | /* Return the libthread_db state string assicoated with STATECODE. |
8d027a04 | 256 | If STATECODE is unknown, return an appropriate message. */ |
c906108c | 257 | |
995816ba | 258 | static const char * |
fba45db2 | 259 | td_state_string (td_thr_state_e statecode) |
c906108c | 260 | { |
8d027a04 | 261 | static struct string_map td_thr_state_table[] = |
c5aa993b | 262 | { |
8d027a04 MK |
263 | { TD_THR_ANY_STATE, "any state" }, |
264 | { TD_THR_UNKNOWN, "unknown" }, | |
265 | { TD_THR_STOPPED, "stopped" }, | |
266 | { TD_THR_RUN, "run" }, | |
267 | { TD_THR_ACTIVE, "active" }, | |
268 | { TD_THR_ZOMBIE, "zombie" }, | |
269 | { TD_THR_SLEEP, "sleep" }, | |
270 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 271 | }; |
8d027a04 MK |
272 | const int td_thr_state_table_size = |
273 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
274 | int i; |
275 | static char buf[50]; | |
276 | ||
277 | for (i = 0; i < td_thr_state_table_size; i++) | |
278 | if (td_thr_state_table[i].num == statecode) | |
279 | return td_thr_state_table[i].str; | |
c5aa993b | 280 | |
8c042590 PM |
281 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db state code: %d", |
282 | statecode); | |
c906108c SS |
283 | |
284 | return buf; | |
285 | } | |
286 | \f | |
c906108c | 287 | |
8d027a04 MK |
288 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
289 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 290 | DEFAULT_LWP. |
c906108c | 291 | |
8d027a04 | 292 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 293 | |
39f77062 KB |
294 | static ptid_t |
295 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
296 | { |
297 | td_thrinfo_t ti; | |
298 | td_thrhandle_t th; | |
299 | td_err_e val; | |
300 | ||
dfd4cc63 | 301 | if (ptid_lwp_p (thread_id)) |
8d027a04 | 302 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 303 | |
8d027a04 | 304 | /* It's a thread. Convert to LWP. */ |
c906108c | 305 | |
dfd4cc63 | 306 | val = p_td_ta_map_id2thr (main_ta, ptid_get_tid (thread_id), &th); |
c906108c | 307 | if (val == TD_NOTHR) |
8d027a04 | 308 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 309 | else if (val != TD_OK) |
8a3fe4f8 | 310 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
311 | |
312 | val = p_td_thr_get_info (&th, &ti); | |
313 | if (val == TD_NOTHR) | |
8d027a04 | 314 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 315 | else if (val != TD_OK) |
8a3fe4f8 | 316 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
317 | |
318 | if (ti.ti_state != TD_THR_ACTIVE) | |
319 | { | |
320 | if (default_lwp != -1) | |
39f77062 | 321 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 322 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
323 | td_state_string (ti.ti_state)); |
324 | } | |
325 | ||
dfd4cc63 | 326 | return ptid_build (ptid_get_pid (thread_id), ti.ti_lid, 0); |
c906108c | 327 | } |
c906108c | 328 | |
8d027a04 MK |
329 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
330 | doesn't exists, that's an error. | |
c906108c | 331 | |
8d027a04 | 332 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 333 | |
39f77062 KB |
334 | static ptid_t |
335 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
336 | { |
337 | td_thrinfo_t ti; | |
338 | td_thrhandle_t th; | |
339 | td_err_e val; | |
340 | ||
dfd4cc63 | 341 | if (ptid_tid_p (lwp)) |
8d027a04 | 342 | return lwp; /* It's already a thread ID. */ |
c906108c | 343 | |
8d027a04 | 344 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 345 | |
28439f5e | 346 | if (!target_thread_alive (lwp)) |
8d027a04 | 347 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c | 348 | |
dfd4cc63 | 349 | val = p_td_ta_map_lwp2thr (main_ta, ptid_get_lwp (lwp), &th); |
c906108c | 350 | if (val == TD_NOTHR) |
8d027a04 | 351 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 352 | else if (val != TD_OK) |
8a3fe4f8 | 353 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
354 | |
355 | val = p_td_thr_validate (&th); | |
356 | if (val == TD_NOTHR) | |
8d027a04 | 357 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 358 | else if (val != TD_OK) |
8a3fe4f8 | 359 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
360 | |
361 | val = p_td_thr_get_info (&th, &ti); | |
362 | if (val == TD_NOTHR) | |
8d027a04 | 363 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 364 | else if (val != TD_OK) |
8a3fe4f8 | 365 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c | 366 | |
dfd4cc63 | 367 | return ptid_build (ptid_get_pid (lwp), 0 , ti.ti_tid); |
c906108c SS |
368 | } |
369 | \f | |
c906108c | 370 | |
8d027a04 | 371 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
372 | through to the layer beneath, as they don't need to do anything |
373 | specific for threads. */ | |
c906108c | 374 | |
8d027a04 MK |
375 | /* Take a program previously attached to and detaches it. The program |
376 | resumes execution and will no longer stop on signals, etc. We'd | |
377 | better not have left any breakpoints in the program or it'll die | |
378 | when it hits one. For this to work, it may be necessary for the | |
379 | process to have been previously attached. It *might* work if the | |
380 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c | 381 | |
f6ac5f3d PA |
382 | void |
383 | sol_thread_target::detach (inferior *inf, int from_tty) | |
c906108c | 384 | { |
f6ac5f3d | 385 | struct target_ops *beneath = find_target_beneath (this); |
28439f5e | 386 | |
2689673f | 387 | sol_thread_active = 0; |
dfd4cc63 | 388 | inferior_ptid = pid_to_ptid (ptid_get_pid (main_ph.ptid)); |
f6ac5f3d PA |
389 | unpush_target (this); |
390 | beneath->detach (inf, from_tty); | |
c906108c SS |
391 | } |
392 | ||
8d027a04 MK |
393 | /* Resume execution of process PTID. If STEP is nozero, then just |
394 | single step it. If SIGNAL is nonzero, restart it with that signal | |
395 | activated. We may have to convert PTID from a thread ID to an LWP | |
396 | ID for procfs. */ | |
c906108c | 397 | |
f6ac5f3d PA |
398 | void |
399 | sol_thread_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
c906108c | 400 | { |
f6ac5f3d | 401 | struct target_ops *beneath = find_target_beneath (this); |
c906108c | 402 | |
2989a365 | 403 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 404 | |
dfd4cc63 LM |
405 | inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid)); |
406 | if (ptid_get_pid (inferior_ptid) == -1) | |
39f77062 | 407 | inferior_ptid = procfs_first_available (); |
c906108c | 408 | |
dfd4cc63 | 409 | if (ptid_get_pid (ptid) != -1) |
c906108c | 410 | { |
39f77062 | 411 | ptid_t save_ptid = ptid; |
c906108c | 412 | |
39f77062 | 413 | ptid = thread_to_lwp (ptid, -2); |
dfd4cc63 | 414 | if (ptid_get_pid (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 415 | error (_("This version of Solaris can't start inactive threads.")); |
dfd4cc63 | 416 | if (info_verbose && ptid_get_pid (ptid) == -1) |
8a3fe4f8 | 417 | warning (_("Specified thread %ld seems to have terminated"), |
dfd4cc63 | 418 | ptid_get_tid (save_ptid)); |
c906108c SS |
419 | } |
420 | ||
f6ac5f3d | 421 | beneath->resume (ptid, step, signo); |
c906108c SS |
422 | } |
423 | ||
2689673f | 424 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 425 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 426 | |
f6ac5f3d PA |
427 | ptid_t |
428 | sol_thread_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
429 | int options) | |
c906108c | 430 | { |
39f77062 KB |
431 | ptid_t rtnval; |
432 | ptid_t save_ptid; | |
f6ac5f3d | 433 | struct target_ops *beneath = find_target_beneath (this); |
c906108c | 434 | |
39f77062 | 435 | save_ptid = inferior_ptid; |
2989a365 | 436 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 437 | |
dfd4cc63 LM |
438 | inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid)); |
439 | if (ptid_get_pid (inferior_ptid) == -1) | |
39f77062 | 440 | inferior_ptid = procfs_first_available (); |
c906108c | 441 | |
dfd4cc63 | 442 | if (ptid_get_pid (ptid) != -1) |
c906108c | 443 | { |
39f77062 | 444 | ptid_t save_ptid = ptid; |
c906108c | 445 | |
39f77062 | 446 | ptid = thread_to_lwp (ptid, -2); |
dfd4cc63 | 447 | if (ptid_get_pid (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 448 | error (_("This version of Solaris can't start inactive threads.")); |
dfd4cc63 | 449 | if (info_verbose && ptid_get_pid (ptid) == -1) |
8a3fe4f8 | 450 | warning (_("Specified thread %ld seems to have terminated"), |
dfd4cc63 | 451 | ptid_get_tid (save_ptid)); |
c906108c SS |
452 | } |
453 | ||
f6ac5f3d | 454 | rtnval = beneath->wait (ptid, ourstatus, options); |
c906108c SS |
455 | |
456 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
457 | { | |
8d027a04 | 458 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 459 | rtnval = lwp_to_thread (rtnval); |
dfd4cc63 | 460 | if (ptid_get_pid (rtnval) == -1) |
39f77062 | 461 | rtnval = save_ptid; |
c906108c | 462 | |
8d027a04 | 463 | /* See if we have a new thread. */ |
dfd4cc63 | 464 | if (ptid_tid_p (rtnval) |
39f77062 | 465 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
466 | && (!in_thread_list (rtnval) |
467 | || is_exited (rtnval))) | |
93815fbf | 468 | add_thread (rtnval); |
c906108c SS |
469 | } |
470 | ||
8d027a04 MK |
471 | /* During process initialization, we may get here without the thread |
472 | package being initialized, since that can only happen after we've | |
473 | found the shared libs. */ | |
c906108c | 474 | |
c906108c SS |
475 | return rtnval; |
476 | } | |
477 | ||
f6ac5f3d PA |
478 | void |
479 | sol_thread_target::fetch_registers (struct regcache *regcache, int regnum) | |
c906108c SS |
480 | { |
481 | thread_t thread; | |
482 | td_thrhandle_t thandle; | |
483 | td_err_e val; | |
484 | prgregset_t gregset; | |
485 | prfpregset_t fpregset; | |
e71c308d DJ |
486 | gdb_gregset_t *gregset_p = &gregset; |
487 | gdb_fpregset_t *fpregset_p = &fpregset; | |
f6ac5f3d | 488 | struct target_ops *beneath = find_target_beneath (this); |
bcc0c096 | 489 | ptid_t ptid = regcache_get_ptid (regcache); |
e71c308d | 490 | |
bcc0c096 | 491 | if (!ptid_tid_p (ptid)) |
8d027a04 | 492 | { |
28439f5e | 493 | /* It's an LWP; pass the request on to the layer beneath. */ |
f6ac5f3d | 494 | beneath->fetch_registers (regcache, regnum); |
c906108c SS |
495 | return; |
496 | } | |
497 | ||
bcc0c096 SM |
498 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
499 | thread = ptid_get_tid (ptid); | |
c906108c | 500 | if (thread == 0) |
8a3fe4f8 | 501 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
502 | |
503 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
504 | if (val != TD_OK) | |
8a3fe4f8 | 505 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
506 | td_err_string (val)); |
507 | ||
8d027a04 | 508 | /* Get the general-purpose registers. */ |
c906108c SS |
509 | |
510 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 511 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 512 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
513 | td_err_string (val)); |
514 | ||
8d027a04 MK |
515 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
516 | and %sp are saved (by a thread context switch). */ | |
c906108c | 517 | |
8d027a04 | 518 | /* And, now the floating-point registers. */ |
c906108c SS |
519 | |
520 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 521 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 522 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
523 | td_err_string (val)); |
524 | ||
8d027a04 MK |
525 | /* Note that we must call supply_gregset and supply_fpregset *after* |
526 | calling the td routines because the td routines call ps_lget* | |
527 | which affect the values stored in the registers array. */ | |
c906108c | 528 | |
e71c308d DJ |
529 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
530 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
531 | } |
532 | ||
f6ac5f3d PA |
533 | void |
534 | sol_thread_target::store_registers (struct regcache *regcache, int regnum) | |
c906108c SS |
535 | { |
536 | thread_t thread; | |
537 | td_thrhandle_t thandle; | |
538 | td_err_e val; | |
8d027a04 | 539 | prgregset_t gregset; |
c906108c | 540 | prfpregset_t fpregset; |
bcc0c096 | 541 | ptid_t ptid = regcache_get_ptid (regcache); |
c906108c | 542 | |
bcc0c096 | 543 | if (!ptid_tid_p (ptid)) |
8d027a04 | 544 | { |
f6ac5f3d | 545 | struct target_ops *beneath = find_target_beneath (this); |
28439f5e PA |
546 | |
547 | /* It's an LWP; pass the request on to the layer beneath. */ | |
f6ac5f3d | 548 | beneath->store_registers (regcache, regnum); |
c906108c SS |
549 | return; |
550 | } | |
551 | ||
bcc0c096 SM |
552 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
553 | thread = ptid_get_tid (ptid); | |
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 | { |
f6ac5f3d | 596 | struct target_ops *beneath = find_target_beneath (this); |
6034ae49 | 597 | |
2989a365 | 598 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6034ae49 | 599 | |
dfd4cc63 | 600 | if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
601 | { |
602 | /* It's either a thread or an LWP that isn't alive. Any live | |
603 | LWP will do so use the first available. | |
604 | ||
605 | NOTE: We don't need to call switch_to_thread; we're just | |
606 | reading memory. */ | |
607 | inferior_ptid = procfs_first_available (); | |
608 | } | |
6034ae49 | 609 | |
f6ac5f3d PA |
610 | return beneath->xfer_partial (object, annex, readbuf, |
611 | writebuf, offset, len, xfered_len); | |
6034ae49 RM |
612 | } |
613 | ||
c906108c | 614 | static void |
28439f5e | 615 | check_for_thread_db (void) |
c906108c | 616 | { |
28439f5e PA |
617 | td_err_e err; |
618 | ptid_t ptid; | |
c906108c | 619 | |
9a362b9a | 620 | /* Don't attempt to use thread_db for remote targets. */ |
f6ac5f3d | 621 | if (!(target_can_run () || core_bfd)) |
9a362b9a PA |
622 | return; |
623 | ||
28439f5e PA |
624 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
625 | if (p_td_ta_new == NULL) | |
626 | return; | |
c906108c | 627 | |
28439f5e PA |
628 | if (sol_thread_active) |
629 | /* Nothing to do. The thread library was already detected and the | |
630 | target vector was already activated. */ | |
631 | return; | |
c906108c | 632 | |
28439f5e PA |
633 | /* Now, initialize libthread_db. This needs to be done after the |
634 | shared libraries are located because it needs information from | |
635 | the user's thread library. */ | |
c906108c | 636 | |
28439f5e PA |
637 | err = p_td_init (); |
638 | if (err != TD_OK) | |
639 | { | |
640 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
641 | return; | |
642 | } | |
c906108c | 643 | |
28439f5e PA |
644 | /* Now attempt to open a connection to the thread library. */ |
645 | err = p_td_ta_new (&main_ph, &main_ta); | |
646 | switch (err) | |
c906108c | 647 | { |
28439f5e PA |
648 | case TD_NOLIBTHREAD: |
649 | /* No thread library was detected. */ | |
650 | break; | |
2689673f | 651 | |
28439f5e PA |
652 | case TD_OK: |
653 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 654 | |
28439f5e | 655 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 656 | push_target (&sol_thread_ops); |
28439f5e | 657 | sol_thread_active = 1; |
c906108c | 658 | |
28439f5e | 659 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f | 660 | ptid = lwp_to_thread (inferior_ptid); |
dfd4cc63 | 661 | if (ptid_get_pid (ptid) != -1) |
28439f5e PA |
662 | inferior_ptid = ptid; |
663 | ||
e8032dde | 664 | target_update_thread_list (); |
28439f5e PA |
665 | break; |
666 | ||
667 | default: | |
668 | warning (_("Cannot initialize thread debugging library: %s"), | |
669 | td_err_string (err)); | |
670 | break; | |
c906108c SS |
671 | } |
672 | } | |
673 | ||
8d027a04 MK |
674 | /* This routine is called whenever a new symbol table is read in, or |
675 | when all symbol tables are removed. libthread_db can only be | |
676 | initialized when it finds the right variables in libthread.so. | |
677 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 678 | the library gets mapped and the symbol table is read in. */ |
c906108c | 679 | |
06d3b283 | 680 | static void |
fba45db2 | 681 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 682 | { |
28439f5e PA |
683 | if (objfile != NULL) |
684 | check_for_thread_db (); | |
c906108c SS |
685 | } |
686 | ||
687 | /* Clean up after the inferior dies. */ | |
688 | ||
f6ac5f3d PA |
689 | void |
690 | sol_thread_target::mourn_inferior () | |
c906108c | 691 | { |
f6ac5f3d | 692 | struct target_ops *beneath = find_target_beneath (this); |
28439f5e | 693 | |
2689673f | 694 | sol_thread_active = 0; |
c906108c | 695 | |
f6ac5f3d | 696 | unpush_target (this); |
c906108c | 697 | |
f6ac5f3d | 698 | beneath->mourn_inferior (); |
c906108c SS |
699 | } |
700 | ||
8d027a04 MK |
701 | /* Return true if PTID is still active in the inferior. */ |
702 | ||
57810aa7 | 703 | bool |
f6ac5f3d | 704 | sol_thread_target::thread_alive (ptid_t ptid) |
c906108c | 705 | { |
dfd4cc63 | 706 | if (ptid_tid_p (ptid)) |
c906108c | 707 | { |
8d027a04 | 708 | /* It's a (user-level) thread. */ |
c906108c SS |
709 | td_err_e val; |
710 | td_thrhandle_t th; | |
39f77062 | 711 | int pid; |
c906108c | 712 | |
dfd4cc63 | 713 | pid = ptid_get_tid (ptid); |
c906108c | 714 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
57810aa7 | 715 | return false; /* Thread not found. */ |
c906108c | 716 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
57810aa7 PA |
717 | return false; /* Thread not valid. */ |
718 | return true; /* Known thread. */ | |
c906108c | 719 | } |
c5aa993b | 720 | else |
c906108c | 721 | { |
f6ac5f3d | 722 | struct target_ops *beneath = find_target_beneath (this); |
28439f5e PA |
723 | |
724 | /* It's an LPW; pass the request on to the layer below. */ | |
f6ac5f3d | 725 | return beneath->thread_alive (ptid); |
c906108c SS |
726 | } |
727 | } | |
728 | ||
c906108c | 729 | \f |
8d027a04 MK |
730 | /* These routines implement the lower half of the thread_db interface, |
731 | i.e. the ps_* routines. */ | |
c906108c | 732 | |
8d027a04 MK |
733 | /* The next four routines are called by libthread_db to tell us to |
734 | stop and stop a particular process or lwp. Since GDB ensures that | |
735 | these are all stopped by the time we call anything in thread_db, | |
736 | these routines need to do nothing. */ | |
c906108c | 737 | |
8d027a04 | 738 | /* Process stop. */ |
d4f3574e | 739 | |
c906108c | 740 | ps_err_e |
281c4447 | 741 | ps_pstop (struct ps_prochandle *ph) |
c906108c SS |
742 | { |
743 | return PS_OK; | |
744 | } | |
745 | ||
8d027a04 | 746 | /* Process continue. */ |
d4f3574e | 747 | |
c906108c | 748 | ps_err_e |
281c4447 | 749 | ps_pcontinue (struct ps_prochandle *ph) |
c906108c SS |
750 | { |
751 | return PS_OK; | |
752 | } | |
753 | ||
8d027a04 | 754 | /* LWP stop. */ |
d4f3574e | 755 | |
c906108c | 756 | ps_err_e |
281c4447 | 757 | ps_lstop (struct ps_prochandle *ph, lwpid_t lwpid) |
c906108c SS |
758 | { |
759 | return PS_OK; | |
760 | } | |
761 | ||
8d027a04 | 762 | /* LWP continue. */ |
d4f3574e | 763 | |
c906108c | 764 | ps_err_e |
281c4447 | 765 | ps_lcontinue (struct ps_prochandle *ph, lwpid_t lwpid) |
c906108c SS |
766 | { |
767 | return PS_OK; | |
768 | } | |
769 | ||
d4f3574e SS |
770 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
771 | ||
c906108c | 772 | ps_err_e |
281c4447 RO |
773 | ps_pglobal_lookup (struct ps_prochandle *ph, const char *ld_object_name, |
774 | const char *ld_symbol_name, psaddr_t *ld_symbol_addr) | |
c906108c | 775 | { |
3b7344d5 | 776 | struct bound_minimal_symbol ms; |
c906108c SS |
777 | |
778 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
3b7344d5 | 779 | if (!ms.minsym) |
c906108c SS |
780 | return PS_NOSYM; |
781 | ||
d3c1a85f | 782 | *ld_symbol_addr = BMSYMBOL_VALUE_ADDRESS (ms); |
c906108c SS |
783 | return PS_OK; |
784 | } | |
785 | ||
786 | /* Common routine for reading and writing memory. */ | |
787 | ||
788 | static ps_err_e | |
281c4447 | 789 | rw_common (int dowrite, const struct ps_prochandle *ph, psaddr_t addr, |
019c1128 | 790 | gdb_byte *buf, int size) |
c906108c | 791 | { |
28439f5e | 792 | int ret; |
c906108c | 793 | |
2989a365 | 794 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
c906108c | 795 | |
dfd4cc63 | 796 | if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
797 | { |
798 | /* It's either a thread or an LWP that isn't alive. Any live | |
799 | LWP will do so use the first available. | |
800 | ||
801 | NOTE: We don't need to call switch_to_thread; we're just | |
802 | reading memory. */ | |
803 | inferior_ptid = procfs_first_available (); | |
804 | } | |
c906108c | 805 | |
23e04971 MS |
806 | #if defined (__sparcv9) |
807 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
808 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 809 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
810 | addr &= 0xffffffff; |
811 | #endif | |
812 | ||
28439f5e | 813 | if (dowrite) |
0c4f667c | 814 | ret = target_write_memory (addr, (gdb_byte *) buf, size); |
28439f5e | 815 | else |
0c4f667c | 816 | ret = target_read_memory (addr, (gdb_byte *) buf, size); |
c906108c | 817 | |
28439f5e | 818 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
819 | } |
820 | ||
d4f3574e SS |
821 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
822 | ||
c906108c | 823 | ps_err_e |
281c4447 | 824 | ps_pdread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
c906108c | 825 | { |
b196bc4c | 826 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
827 | } |
828 | ||
d4f3574e SS |
829 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
830 | ||
c906108c | 831 | ps_err_e |
281c4447 RO |
832 | ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr, |
833 | const void *buf, size_t size) | |
c906108c | 834 | { |
019c1128 | 835 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
836 | } |
837 | ||
d4f3574e SS |
838 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
839 | ||
c906108c | 840 | ps_err_e |
281c4447 | 841 | ps_ptread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
c906108c | 842 | { |
b196bc4c | 843 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
844 | } |
845 | ||
d4f3574e SS |
846 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
847 | ||
c906108c | 848 | ps_err_e |
281c4447 RO |
849 | ps_ptwrite (struct ps_prochandle *ph, psaddr_t addr, |
850 | const void *buf, size_t size) | |
c906108c | 851 | { |
019c1128 | 852 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
853 | } |
854 | ||
8d027a04 | 855 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
856 | |
857 | ps_err_e | |
281c4447 | 858 | ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c | 859 | { |
3e00d44f SM |
860 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
861 | struct regcache *regcache | |
862 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c5aa993b | 863 | |
28439f5e | 864 | target_fetch_registers (regcache, -1); |
594f7785 | 865 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c | 866 | |
c906108c SS |
867 | return PS_OK; |
868 | } | |
869 | ||
8d027a04 | 870 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
871 | |
872 | ps_err_e | |
281c4447 | 873 | ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, |
c906108c SS |
874 | const prgregset_t gregset) |
875 | { | |
3e00d44f SM |
876 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
877 | struct regcache *regcache | |
878 | = get_thread_arch_regcache (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 | { |
3e00d44f SM |
928 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
929 | struct regcache *regcache | |
930 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c906108c | 931 | |
28439f5e | 932 | target_fetch_registers (regcache, -1); |
594f7785 | 933 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c | 934 | |
c906108c SS |
935 | return PS_OK; |
936 | } | |
937 | ||
c378eb4e | 938 | /* Set floating-point regs for LWP. */ |
c906108c SS |
939 | |
940 | ps_err_e | |
281c4447 | 941 | ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
c5aa993b | 942 | const prfpregset_t * fpregset) |
c906108c | 943 | { |
3e00d44f SM |
944 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
945 | struct regcache *regcache | |
946 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c5aa993b | 947 | |
594f7785 | 948 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 949 | target_store_registers (regcache, -1); |
c906108c | 950 | |
c906108c SS |
951 | return PS_OK; |
952 | } | |
953 | ||
23715f29 | 954 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
955 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
956 | BFD to do this. There might be a more Solaris-specific | |
957 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
958 | |
959 | ps_err_e | |
281c4447 | 960 | ps_pdmodel (struct ps_prochandle *ph, int *data_model) |
23e04971 MS |
961 | { |
962 | if (exec_bfd == 0) | |
a95ac8b6 PS |
963 | *data_model = PR_MODEL_UNKNOWN; |
964 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
965 | *data_model = PR_MODEL_ILP32; |
966 | else | |
967 | *data_model = PR_MODEL_LP64; | |
968 | ||
969 | return PS_OK; | |
970 | } | |
23715f29 | 971 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 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 |
281c4447 | 981 | ps_lgetLDT (struct ps_prochandle *ph, lwpid_t lwpid, |
c906108c SS |
982 | struct ssd *pldt) |
983 | { | |
8d027a04 | 984 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
05e28a7b | 985 | struct ssd *ret; |
c906108c | 986 | |
8d027a04 MK |
987 | /* FIXME: can't I get the process ID from the prochandle or |
988 | something? */ | |
2f09097b | 989 | |
dfd4cc63 | 990 | if (ptid_get_pid (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
991 | return PS_BADLID; |
992 | ||
dfd4cc63 LM |
993 | ret = procfs_find_LDT_entry (ptid_build (ptid_get_pid (inferior_ptid), |
994 | lwpid, 0)); | |
05e28a7b | 995 | if (ret) |
c906108c | 996 | { |
05e28a7b AC |
997 | memcpy (pldt, ret, sizeof (struct ssd)); |
998 | return PS_OK; | |
c906108c | 999 | } |
8d027a04 MK |
1000 | else |
1001 | /* LDT not found. */ | |
c906108c | 1002 | return PS_ERR; |
c5aa993b | 1003 | } |
965b60ee | 1004 | #endif |
c906108c | 1005 | \f |
8d027a04 MK |
1006 | |
1007 | /* Convert PTID to printable form. */ | |
c906108c | 1008 | |
f6ac5f3d PA |
1009 | const char * |
1010 | sol_thread_target::pid_to_str (ptid_t ptid) | |
c906108c SS |
1011 | { |
1012 | static char buf[100]; | |
1013 | ||
dfd4cc63 | 1014 | if (ptid_tid_p (ptid)) |
c906108c | 1015 | { |
39f77062 | 1016 | ptid_t lwp; |
c906108c | 1017 | |
39f77062 | 1018 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1019 | |
dfd4cc63 | 1020 | if (ptid_get_pid (lwp) == -1) |
8c042590 | 1021 | xsnprintf (buf, sizeof (buf), "Thread %ld (defunct)", |
dfd4cc63 LM |
1022 | ptid_get_tid (ptid)); |
1023 | else if (ptid_get_pid (lwp) != -2) | |
8c042590 | 1024 | xsnprintf (buf, sizeof (buf), "Thread %ld (LWP %ld)", |
dfd4cc63 | 1025 | ptid_get_tid (ptid), ptid_get_lwp (lwp)); |
c906108c | 1026 | else |
dfd4cc63 LM |
1027 | xsnprintf (buf, sizeof (buf), "Thread %ld ", |
1028 | ptid_get_tid (ptid)); | |
c906108c | 1029 | } |
dfd4cc63 LM |
1030 | else if (ptid_get_lwp (ptid) != 0) |
1031 | xsnprintf (buf, sizeof (buf), "LWP %ld ", ptid_get_lwp (ptid)); | |
c906108c | 1032 | else |
dfd4cc63 | 1033 | xsnprintf (buf, sizeof (buf), "process %d ", ptid_get_pid (ptid)); |
c906108c SS |
1034 | |
1035 | return buf; | |
1036 | } | |
1037 | \f | |
1038 | ||
e8032dde | 1039 | /* Worker bee for update_thread_list. Callback function that gets |
8d027a04 | 1040 | called once per user-level thread (i.e. not for LWP's). */ |
c906108c SS |
1041 | |
1042 | static int | |
e8032dde | 1043 | sol_update_thread_list_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1044 | { |
1045 | td_err_e retval; | |
1046 | td_thrinfo_t ti; | |
39f77062 | 1047 | ptid_t ptid; |
c906108c | 1048 | |
8d027a04 MK |
1049 | retval = p_td_thr_get_info (th, &ti); |
1050 | if (retval != TD_OK) | |
1051 | return -1; | |
1052 | ||
dfd4cc63 | 1053 | ptid = ptid_build (ptid_get_pid (inferior_ptid), 0, ti.ti_tid); |
2689673f | 1054 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1055 | add_thread (ptid); |
c906108c SS |
1056 | |
1057 | return 0; | |
1058 | } | |
1059 | ||
f6ac5f3d PA |
1060 | void |
1061 | sol_thread_target::update_thread_list () | |
c906108c | 1062 | { |
f6ac5f3d | 1063 | struct target_ops *beneath = find_target_beneath (this); |
8d027a04 | 1064 | |
e8032dde PA |
1065 | /* Delete dead threads. */ |
1066 | prune_threads (); | |
1067 | ||
1068 | /* Find any new LWP's. */ | |
f6ac5f3d | 1069 | beneath->update_thread_list (); |
8d027a04 MK |
1070 | |
1071 | /* Then find any new user-level threads. */ | |
e8032dde | 1072 | p_td_ta_thr_iter (main_ta, sol_update_thread_list_callback, (void *) 0, |
c906108c SS |
1073 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1074 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1075 | } | |
1076 | ||
8d027a04 MK |
1077 | /* Worker bee for the "info sol-thread" command. This is a callback |
1078 | function that gets called once for each Solaris user-level thread | |
1079 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1080 | that we can think of. */ | |
c906108c | 1081 | |
c5aa993b | 1082 | static int |
fba45db2 | 1083 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1084 | { |
1085 | td_err_e ret; | |
1086 | td_thrinfo_t ti; | |
c906108c | 1087 | |
8d027a04 MK |
1088 | ret = p_td_thr_get_info (th, &ti); |
1089 | if (ret == TD_OK) | |
c906108c | 1090 | { |
c5aa993b JM |
1091 | printf_filtered ("%s thread #%d, lwp %d, ", |
1092 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1093 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1094 | switch (ti.ti_state) |
1095 | { | |
c906108c | 1096 | default: |
c5aa993b JM |
1097 | case TD_THR_UNKNOWN: |
1098 | printf_filtered ("<unknown state>"); | |
1099 | break; | |
1100 | case TD_THR_STOPPED: | |
1101 | printf_filtered ("(stopped)"); | |
1102 | break; | |
1103 | case TD_THR_RUN: | |
1104 | printf_filtered ("(run) "); | |
1105 | break; | |
1106 | case TD_THR_ACTIVE: | |
1107 | printf_filtered ("(active) "); | |
1108 | break; | |
1109 | case TD_THR_ZOMBIE: | |
1110 | printf_filtered ("(zombie) "); | |
1111 | break; | |
1112 | case TD_THR_SLEEP: | |
1113 | printf_filtered ("(asleep) "); | |
1114 | break; | |
1115 | case TD_THR_STOPPED_ASLEEP: | |
1116 | printf_filtered ("(stopped asleep)"); | |
1117 | break; | |
1118 | } | |
8d027a04 | 1119 | /* Print thr_create start function. */ |
c906108c | 1120 | if (ti.ti_startfunc != 0) |
4ce44c66 | 1121 | { |
5812197c JB |
1122 | const struct bound_minimal_symbol msym |
1123 | = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1124 | ||
17e760ae JB |
1125 | printf_filtered (" startfunc=%s", |
1126 | msym.minsym | |
d3c1a85f | 1127 | ? MSYMBOL_PRINT_NAME (msym.minsym) |
17e760ae | 1128 | : paddress (target_gdbarch (), ti.ti_startfunc)); |
4ce44c66 | 1129 | } |
c906108c | 1130 | |
8d027a04 | 1131 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1132 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 | 1133 | { |
5812197c JB |
1134 | const struct bound_minimal_symbol msym |
1135 | = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1136 | ||
17e760ae JB |
1137 | printf_filtered (" sleepfunc=%s", |
1138 | msym.minsym | |
d3c1a85f | 1139 | ? MSYMBOL_PRINT_NAME (msym.minsym) |
17e760ae | 1140 | : paddress (target_gdbarch (), ti.ti_pc)); |
4ce44c66 | 1141 | } |
c906108c | 1142 | |
c0f5f490 | 1143 | printf_filtered ("\n"); |
c906108c SS |
1144 | } |
1145 | else | |
8a3fe4f8 | 1146 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1147 | |
c5aa993b | 1148 | return 0; |
c906108c SS |
1149 | } |
1150 | ||
8d027a04 MK |
1151 | /* List some state about each Solaris user-level thread in the |
1152 | inferior. */ | |
c906108c SS |
1153 | |
1154 | static void | |
e8020e54 | 1155 | info_solthreads (const char *args, int from_tty) |
c906108c | 1156 | { |
e8020e54 | 1157 | p_td_ta_thr_iter (main_ta, info_cb, (void *) args, |
c906108c SS |
1158 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1159 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1160 | } | |
c906108c | 1161 | |
3caf13b4 JB |
1162 | /* Callback routine used to find a thread based on the TID part of |
1163 | its PTID. */ | |
1164 | ||
1165 | static int | |
1166 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1167 | { | |
1168 | long *tid = (long *) data; | |
1169 | ||
1170 | if (ptid_get_tid (thread->ptid) == *tid) | |
1171 | return 1; | |
1172 | ||
1173 | return 0; | |
1174 | } | |
1175 | ||
f6ac5f3d PA |
1176 | ptid_t |
1177 | sol_thread_target::get_ada_task_ptid (long lwp, long thread) | |
3caf13b4 JB |
1178 | { |
1179 | struct thread_info *thread_info = | |
1180 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1181 | ||
1182 | if (thread_info == NULL) | |
1183 | { | |
1184 | /* The list of threads is probably not up to date. Find any | |
1185 | thread that is missing from the list, and try again. */ | |
f6ac5f3d | 1186 | update_thread_list (); |
3caf13b4 JB |
1187 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, |
1188 | &thread); | |
1189 | } | |
1190 | ||
1191 | gdb_assert (thread_info != NULL); | |
1192 | ||
1193 | return (thread_info->ptid); | |
1194 | } | |
1195 | ||
c906108c | 1196 | void |
fba45db2 | 1197 | _initialize_sol_thread (void) |
c906108c SS |
1198 | { |
1199 | void *dlhandle; | |
1200 | ||
c906108c SS |
1201 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); |
1202 | if (!dlhandle) | |
1203 | goto die; | |
1204 | ||
1205 | #define resolve(X) \ | |
b196bc4c | 1206 | if (!(p_##X = (X ## _ftype *) dlsym (dlhandle, #X))) \ |
c906108c SS |
1207 | goto die; |
1208 | ||
1209 | resolve (td_log); | |
1210 | resolve (td_ta_new); | |
1211 | resolve (td_ta_delete); | |
1212 | resolve (td_init); | |
1213 | resolve (td_ta_get_ph); | |
1214 | resolve (td_ta_get_nthreads); | |
1215 | resolve (td_ta_tsd_iter); | |
1216 | resolve (td_ta_thr_iter); | |
1217 | resolve (td_thr_validate); | |
1218 | resolve (td_thr_tsd); | |
1219 | resolve (td_thr_get_info); | |
1220 | resolve (td_thr_getfpregs); | |
1221 | resolve (td_thr_getxregsize); | |
1222 | resolve (td_thr_getxregs); | |
1223 | resolve (td_thr_sigsetmask); | |
1224 | resolve (td_thr_setprio); | |
1225 | resolve (td_thr_setsigpending); | |
1226 | resolve (td_thr_setfpregs); | |
1227 | resolve (td_thr_setxregs); | |
1228 | resolve (td_ta_map_id2thr); | |
1229 | resolve (td_ta_map_lwp2thr); | |
1230 | resolve (td_thr_getgregs); | |
1231 | resolve (td_thr_setgregs); | |
1232 | ||
c5aa993b | 1233 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1234 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1235 | |
8d027a04 | 1236 | /* Hook into new_objfile notification. */ |
76727919 | 1237 | gdb::observers::new_objfile.attach (sol_thread_new_objfile); |
c906108c SS |
1238 | return; |
1239 | ||
8d027a04 MK |
1240 | die: |
1241 | fprintf_unfiltered (gdb_stderr, "\ | |
1242 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1243 | |
1244 | if (dlhandle) | |
1245 | dlclose (dlhandle); | |
1246 | ||
c906108c SS |
1247 | return; |
1248 | } |