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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
61baf725 | 3 | Copyright (C) 1996-2017 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" |
06d3b283 | 66 | #include "observer.h" |
d1a7880c | 67 | #include "procfs.h" |
d3c1a85f JB |
68 | #include "symtab.h" |
69 | #include "minsyms.h" | |
70 | #include "objfiles.h" | |
6f4492c8 | 71 | |
c906108c | 72 | struct target_ops sol_thread_ops; |
c906108c | 73 | |
c378eb4e | 74 | /* Prototypes for supply_gregset etc. */ |
c60c0f5f | 75 | #include "gregset.h" |
c906108c | 76 | |
8d027a04 MK |
77 | /* This struct is defined by us, but mainly used for the proc_service |
78 | interface. We don't have much use for it, except as a handy place | |
79 | to get a real PID for memory accesses. */ | |
c906108c SS |
80 | |
81 | struct ps_prochandle | |
8d027a04 MK |
82 | { |
83 | ptid_t ptid; | |
84 | }; | |
c906108c SS |
85 | |
86 | struct string_map | |
8d027a04 MK |
87 | { |
88 | int num; | |
89 | char *str; | |
90 | }; | |
c906108c SS |
91 | |
92 | static struct ps_prochandle main_ph; | |
93 | static td_thragent_t *main_ta; | |
94 | static int sol_thread_active = 0; | |
95 | ||
a14ed312 | 96 | static void init_sol_thread_ops (void); |
c906108c | 97 | |
8d027a04 MK |
98 | /* Default definitions: These must be defined in tm.h if they are to |
99 | be shared with a process module such as procfs. */ | |
d4f3574e | 100 | |
b196bc4c RO |
101 | /* Types of the libthread_db functions. */ |
102 | ||
103 | typedef void (td_log_ftype)(const int on_off); | |
104 | typedef td_err_e (td_ta_new_ftype)(const struct ps_prochandle *ph_p, | |
105 | td_thragent_t **ta_pp); | |
106 | typedef td_err_e (td_ta_delete_ftype)(td_thragent_t *ta_p); | |
107 | typedef td_err_e (td_init_ftype)(void); | |
108 | typedef td_err_e (td_ta_get_ph_ftype)(const td_thragent_t *ta_p, | |
109 | struct ps_prochandle **ph_pp); | |
110 | typedef td_err_e (td_ta_get_nthreads_ftype)(const td_thragent_t *ta_p, | |
111 | int *nthread_p); | |
112 | typedef td_err_e (td_ta_tsd_iter_ftype)(const td_thragent_t *ta_p, | |
113 | td_key_iter_f *cb, void *cbdata_p); | |
114 | typedef td_err_e (td_ta_thr_iter_ftype)(const td_thragent_t *ta_p, | |
115 | td_thr_iter_f *cb, void *cbdata_p, | |
116 | td_thr_state_e state, int ti_pri, | |
117 | sigset_t *ti_sigmask_p, | |
118 | unsigned ti_user_flags); | |
119 | typedef td_err_e (td_thr_validate_ftype)(const td_thrhandle_t *th_p); | |
120 | typedef td_err_e (td_thr_tsd_ftype)(const td_thrhandle_t * th_p, | |
121 | const thread_key_t key, void **data_pp); | |
122 | typedef td_err_e (td_thr_get_info_ftype)(const td_thrhandle_t *th_p, | |
123 | td_thrinfo_t *ti_p); | |
124 | typedef td_err_e (td_thr_getfpregs_ftype)(const td_thrhandle_t *th_p, | |
125 | prfpregset_t *fpregset); | |
126 | typedef td_err_e (td_thr_getxregsize_ftype)(const td_thrhandle_t *th_p, | |
127 | int *xregsize); | |
128 | typedef td_err_e (td_thr_getxregs_ftype)(const td_thrhandle_t *th_p, | |
129 | const caddr_t xregset); | |
130 | typedef td_err_e (td_thr_sigsetmask_ftype)(const td_thrhandle_t *th_p, | |
131 | const sigset_t ti_sigmask); | |
132 | typedef td_err_e (td_thr_setprio_ftype)(const td_thrhandle_t *th_p, | |
133 | const int ti_pri); | |
134 | typedef td_err_e (td_thr_setsigpending_ftype)(const td_thrhandle_t *th_p, | |
135 | const uchar_t ti_pending_flag, | |
136 | const sigset_t ti_pending); | |
137 | typedef td_err_e (td_thr_setfpregs_ftype)(const td_thrhandle_t *th_p, | |
138 | const prfpregset_t *fpregset); | |
139 | typedef td_err_e (td_thr_setxregs_ftype)(const td_thrhandle_t *th_p, | |
140 | const caddr_t xregset); | |
141 | typedef td_err_e (td_ta_map_id2thr_ftype)(const td_thragent_t *ta_p, | |
142 | thread_t tid, | |
143 | td_thrhandle_t *th_p); | |
144 | typedef td_err_e (td_ta_map_lwp2thr_ftype)(const td_thragent_t *ta_p, | |
145 | lwpid_t lwpid, | |
146 | td_thrhandle_t *th_p); | |
147 | typedef td_err_e (td_thr_getgregs_ftype)(const td_thrhandle_t *th_p, | |
148 | prgregset_t regset); | |
149 | typedef td_err_e (td_thr_setgregs_ftype)(const td_thrhandle_t *th_p, | |
150 | const prgregset_t regset); | |
151 | ||
8d027a04 MK |
152 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
153 | ||
b196bc4c RO |
154 | static td_log_ftype *p_td_log; |
155 | static td_ta_new_ftype *p_td_ta_new; | |
156 | static td_ta_delete_ftype *p_td_ta_delete; | |
157 | static td_init_ftype *p_td_init; | |
158 | static td_ta_get_ph_ftype *p_td_ta_get_ph; | |
159 | static td_ta_get_nthreads_ftype *p_td_ta_get_nthreads; | |
160 | static td_ta_tsd_iter_ftype *p_td_ta_tsd_iter; | |
161 | static td_ta_thr_iter_ftype *p_td_ta_thr_iter; | |
162 | static td_thr_validate_ftype *p_td_thr_validate; | |
163 | static td_thr_tsd_ftype *p_td_thr_tsd; | |
164 | static td_thr_get_info_ftype *p_td_thr_get_info; | |
165 | static td_thr_getfpregs_ftype *p_td_thr_getfpregs; | |
166 | static td_thr_getxregsize_ftype *p_td_thr_getxregsize; | |
167 | static td_thr_getxregs_ftype *p_td_thr_getxregs; | |
168 | static td_thr_sigsetmask_ftype *p_td_thr_sigsetmask; | |
169 | static td_thr_setprio_ftype *p_td_thr_setprio; | |
170 | static td_thr_setsigpending_ftype *p_td_thr_setsigpending; | |
171 | static td_thr_setfpregs_ftype *p_td_thr_setfpregs; | |
172 | static td_thr_setxregs_ftype *p_td_thr_setxregs; | |
173 | static td_ta_map_id2thr_ftype *p_td_ta_map_id2thr; | |
174 | static td_ta_map_lwp2thr_ftype *p_td_ta_map_lwp2thr; | |
175 | static td_thr_getgregs_ftype *p_td_thr_getgregs; | |
176 | static td_thr_setgregs_ftype *p_td_thr_setgregs; | |
8d027a04 | 177 | \f |
c906108c | 178 | |
8d027a04 MK |
179 | /* Return the libthread_db error string associated with ERRCODE. If |
180 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c SS |
181 | |
182 | static char * | |
fba45db2 | 183 | td_err_string (td_err_e errcode) |
c906108c | 184 | { |
8d027a04 | 185 | static struct string_map td_err_table[] = |
c5aa993b | 186 | { |
8d027a04 MK |
187 | { TD_OK, "generic \"call succeeded\"" }, |
188 | { TD_ERR, "generic error." }, | |
189 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
190 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
191 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
192 | { TD_BADPH, "invalid process handle" }, | |
193 | { TD_BADTH, "invalid thread handle" }, | |
194 | { TD_BADSH, "invalid synchronization handle" }, | |
195 | { TD_BADTA, "invalid thread agent" }, | |
196 | { TD_BADKEY, "invalid key" }, | |
197 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
198 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
199 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
200 | { TD_NOEVENT, "requested event is not supported" }, | |
201 | { TD_NOCAPAB, "capability not available" }, | |
202 | { TD_DBERR, "Debugger service failed" }, | |
203 | { TD_NOAPLIC, "Operation not applicable to" }, | |
204 | { TD_NOTSD, "No thread specific data for this thread" }, | |
205 | { TD_MALLOC, "Malloc failed" }, | |
206 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
207 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 208 | }; |
c906108c SS |
209 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
210 | int i; | |
211 | static char buf[50]; | |
212 | ||
213 | for (i = 0; i < td_err_size; i++) | |
214 | if (td_err_table[i].num == errcode) | |
215 | return td_err_table[i].str; | |
c5aa993b | 216 | |
8c042590 PM |
217 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db error code: %d", |
218 | errcode); | |
c906108c SS |
219 | |
220 | return buf; | |
221 | } | |
c906108c | 222 | |
b021a221 | 223 | /* Return the libthread_db state string assicoated with STATECODE. |
8d027a04 | 224 | If STATECODE is unknown, return an appropriate message. */ |
c906108c SS |
225 | |
226 | static char * | |
fba45db2 | 227 | td_state_string (td_thr_state_e statecode) |
c906108c | 228 | { |
8d027a04 | 229 | static struct string_map td_thr_state_table[] = |
c5aa993b | 230 | { |
8d027a04 MK |
231 | { TD_THR_ANY_STATE, "any state" }, |
232 | { TD_THR_UNKNOWN, "unknown" }, | |
233 | { TD_THR_STOPPED, "stopped" }, | |
234 | { TD_THR_RUN, "run" }, | |
235 | { TD_THR_ACTIVE, "active" }, | |
236 | { TD_THR_ZOMBIE, "zombie" }, | |
237 | { TD_THR_SLEEP, "sleep" }, | |
238 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 239 | }; |
8d027a04 MK |
240 | const int td_thr_state_table_size = |
241 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
242 | int i; |
243 | static char buf[50]; | |
244 | ||
245 | for (i = 0; i < td_thr_state_table_size; i++) | |
246 | if (td_thr_state_table[i].num == statecode) | |
247 | return td_thr_state_table[i].str; | |
c5aa993b | 248 | |
8c042590 PM |
249 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db state code: %d", |
250 | statecode); | |
c906108c SS |
251 | |
252 | return buf; | |
253 | } | |
254 | \f | |
c906108c | 255 | |
8d027a04 MK |
256 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
257 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 258 | DEFAULT_LWP. |
c906108c | 259 | |
8d027a04 | 260 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 261 | |
39f77062 KB |
262 | static ptid_t |
263 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
264 | { |
265 | td_thrinfo_t ti; | |
266 | td_thrhandle_t th; | |
267 | td_err_e val; | |
268 | ||
dfd4cc63 | 269 | if (ptid_lwp_p (thread_id)) |
8d027a04 | 270 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 271 | |
8d027a04 | 272 | /* It's a thread. Convert to LWP. */ |
c906108c | 273 | |
dfd4cc63 | 274 | val = p_td_ta_map_id2thr (main_ta, ptid_get_tid (thread_id), &th); |
c906108c | 275 | if (val == TD_NOTHR) |
8d027a04 | 276 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 277 | else if (val != TD_OK) |
8a3fe4f8 | 278 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
279 | |
280 | val = p_td_thr_get_info (&th, &ti); | |
281 | if (val == TD_NOTHR) | |
8d027a04 | 282 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 283 | else if (val != TD_OK) |
8a3fe4f8 | 284 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
285 | |
286 | if (ti.ti_state != TD_THR_ACTIVE) | |
287 | { | |
288 | if (default_lwp != -1) | |
39f77062 | 289 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 290 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
291 | td_state_string (ti.ti_state)); |
292 | } | |
293 | ||
dfd4cc63 | 294 | return ptid_build (ptid_get_pid (thread_id), ti.ti_lid, 0); |
c906108c | 295 | } |
c906108c | 296 | |
8d027a04 MK |
297 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
298 | doesn't exists, that's an error. | |
c906108c | 299 | |
8d027a04 | 300 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 301 | |
39f77062 KB |
302 | static ptid_t |
303 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
304 | { |
305 | td_thrinfo_t ti; | |
306 | td_thrhandle_t th; | |
307 | td_err_e val; | |
308 | ||
dfd4cc63 | 309 | if (ptid_tid_p (lwp)) |
8d027a04 | 310 | return lwp; /* It's already a thread ID. */ |
c906108c | 311 | |
8d027a04 | 312 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 313 | |
28439f5e | 314 | if (!target_thread_alive (lwp)) |
8d027a04 | 315 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c | 316 | |
dfd4cc63 | 317 | val = p_td_ta_map_lwp2thr (main_ta, ptid_get_lwp (lwp), &th); |
c906108c | 318 | if (val == TD_NOTHR) |
8d027a04 | 319 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 320 | else if (val != TD_OK) |
8a3fe4f8 | 321 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
322 | |
323 | val = p_td_thr_validate (&th); | |
324 | if (val == TD_NOTHR) | |
8d027a04 | 325 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 326 | else if (val != TD_OK) |
8a3fe4f8 | 327 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
328 | |
329 | val = p_td_thr_get_info (&th, &ti); | |
330 | if (val == TD_NOTHR) | |
8d027a04 | 331 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 332 | else if (val != TD_OK) |
8a3fe4f8 | 333 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c | 334 | |
dfd4cc63 | 335 | return ptid_build (ptid_get_pid (lwp), 0 , ti.ti_tid); |
c906108c SS |
336 | } |
337 | \f | |
c906108c | 338 | |
8d027a04 | 339 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
340 | through to the layer beneath, as they don't need to do anything |
341 | specific for threads. */ | |
c906108c | 342 | |
8d027a04 MK |
343 | /* Take a program previously attached to and detaches it. The program |
344 | resumes execution and will no longer stop on signals, etc. We'd | |
345 | better not have left any breakpoints in the program or it'll die | |
346 | when it hits one. For this to work, it may be necessary for the | |
347 | process to have been previously attached. It *might* work if the | |
348 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
349 | |
350 | static void | |
52554a0e | 351 | sol_thread_detach (struct target_ops *ops, const char *args, int from_tty) |
c906108c | 352 | { |
28439f5e PA |
353 | struct target_ops *beneath = find_target_beneath (ops); |
354 | ||
2689673f | 355 | sol_thread_active = 0; |
dfd4cc63 | 356 | inferior_ptid = pid_to_ptid (ptid_get_pid (main_ph.ptid)); |
28439f5e PA |
357 | unpush_target (ops); |
358 | beneath->to_detach (beneath, args, from_tty); | |
c906108c SS |
359 | } |
360 | ||
8d027a04 MK |
361 | /* Resume execution of process PTID. If STEP is nozero, then just |
362 | single step it. If SIGNAL is nonzero, restart it with that signal | |
363 | activated. We may have to convert PTID from a thread ID to an LWP | |
364 | ID for procfs. */ | |
c906108c SS |
365 | |
366 | static void | |
28439f5e | 367 | sol_thread_resume (struct target_ops *ops, |
2ea28649 | 368 | ptid_t ptid, int step, enum gdb_signal signo) |
c906108c SS |
369 | { |
370 | struct cleanup *old_chain; | |
28439f5e | 371 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c | 372 | |
39f77062 | 373 | old_chain = save_inferior_ptid (); |
c906108c | 374 | |
dfd4cc63 LM |
375 | inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid)); |
376 | if (ptid_get_pid (inferior_ptid) == -1) | |
39f77062 | 377 | inferior_ptid = procfs_first_available (); |
c906108c | 378 | |
dfd4cc63 | 379 | if (ptid_get_pid (ptid) != -1) |
c906108c | 380 | { |
39f77062 | 381 | ptid_t save_ptid = ptid; |
c906108c | 382 | |
39f77062 | 383 | ptid = thread_to_lwp (ptid, -2); |
dfd4cc63 | 384 | if (ptid_get_pid (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 385 | error (_("This version of Solaris can't start inactive threads.")); |
dfd4cc63 | 386 | if (info_verbose && ptid_get_pid (ptid) == -1) |
8a3fe4f8 | 387 | warning (_("Specified thread %ld seems to have terminated"), |
dfd4cc63 | 388 | ptid_get_tid (save_ptid)); |
c906108c SS |
389 | } |
390 | ||
28439f5e | 391 | beneath->to_resume (beneath, ptid, step, signo); |
c906108c SS |
392 | |
393 | do_cleanups (old_chain); | |
394 | } | |
395 | ||
2689673f | 396 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 397 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 398 | |
39f77062 | 399 | static ptid_t |
117de6a9 | 400 | sol_thread_wait (struct target_ops *ops, |
47608cb1 | 401 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
c906108c | 402 | { |
39f77062 KB |
403 | ptid_t rtnval; |
404 | ptid_t save_ptid; | |
28439f5e | 405 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c SS |
406 | struct cleanup *old_chain; |
407 | ||
39f77062 KB |
408 | save_ptid = inferior_ptid; |
409 | old_chain = save_inferior_ptid (); | |
c906108c | 410 | |
dfd4cc63 LM |
411 | inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid)); |
412 | if (ptid_get_pid (inferior_ptid) == -1) | |
39f77062 | 413 | inferior_ptid = procfs_first_available (); |
c906108c | 414 | |
dfd4cc63 | 415 | if (ptid_get_pid (ptid) != -1) |
c906108c | 416 | { |
39f77062 | 417 | ptid_t save_ptid = ptid; |
c906108c | 418 | |
39f77062 | 419 | ptid = thread_to_lwp (ptid, -2); |
dfd4cc63 | 420 | if (ptid_get_pid (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 421 | error (_("This version of Solaris can't start inactive threads.")); |
dfd4cc63 | 422 | if (info_verbose && ptid_get_pid (ptid) == -1) |
8a3fe4f8 | 423 | warning (_("Specified thread %ld seems to have terminated"), |
dfd4cc63 | 424 | ptid_get_tid (save_ptid)); |
c906108c SS |
425 | } |
426 | ||
47608cb1 | 427 | rtnval = beneath->to_wait (beneath, ptid, ourstatus, options); |
c906108c SS |
428 | |
429 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
430 | { | |
8d027a04 | 431 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 432 | rtnval = lwp_to_thread (rtnval); |
dfd4cc63 | 433 | if (ptid_get_pid (rtnval) == -1) |
39f77062 | 434 | rtnval = save_ptid; |
c906108c | 435 | |
8d027a04 | 436 | /* See if we have a new thread. */ |
dfd4cc63 | 437 | if (ptid_tid_p (rtnval) |
39f77062 | 438 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
439 | && (!in_thread_list (rtnval) |
440 | || is_exited (rtnval))) | |
93815fbf | 441 | add_thread (rtnval); |
c906108c SS |
442 | } |
443 | ||
8d027a04 MK |
444 | /* During process initialization, we may get here without the thread |
445 | package being initialized, since that can only happen after we've | |
446 | found the shared libs. */ | |
c906108c SS |
447 | |
448 | do_cleanups (old_chain); | |
449 | ||
450 | return rtnval; | |
451 | } | |
452 | ||
453 | static void | |
28439f5e PA |
454 | sol_thread_fetch_registers (struct target_ops *ops, |
455 | struct regcache *regcache, int regnum) | |
c906108c SS |
456 | { |
457 | thread_t thread; | |
458 | td_thrhandle_t thandle; | |
459 | td_err_e val; | |
460 | prgregset_t gregset; | |
461 | prfpregset_t fpregset; | |
e71c308d DJ |
462 | gdb_gregset_t *gregset_p = &gregset; |
463 | gdb_fpregset_t *fpregset_p = &fpregset; | |
28439f5e | 464 | struct target_ops *beneath = find_target_beneath (ops); |
bcc0c096 | 465 | ptid_t ptid = regcache_get_ptid (regcache); |
e71c308d | 466 | |
bcc0c096 | 467 | if (!ptid_tid_p (ptid)) |
8d027a04 | 468 | { |
28439f5e PA |
469 | /* It's an LWP; pass the request on to the layer beneath. */ |
470 | beneath->to_fetch_registers (beneath, regcache, regnum); | |
c906108c SS |
471 | return; |
472 | } | |
473 | ||
bcc0c096 SM |
474 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
475 | thread = ptid_get_tid (ptid); | |
c906108c | 476 | if (thread == 0) |
8a3fe4f8 | 477 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
478 | |
479 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
480 | if (val != TD_OK) | |
8a3fe4f8 | 481 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
482 | td_err_string (val)); |
483 | ||
8d027a04 | 484 | /* Get the general-purpose registers. */ |
c906108c SS |
485 | |
486 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 487 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 488 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
489 | td_err_string (val)); |
490 | ||
8d027a04 MK |
491 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
492 | and %sp are saved (by a thread context switch). */ | |
c906108c | 493 | |
8d027a04 | 494 | /* And, now the floating-point registers. */ |
c906108c SS |
495 | |
496 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 497 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 498 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
499 | td_err_string (val)); |
500 | ||
8d027a04 MK |
501 | /* Note that we must call supply_gregset and supply_fpregset *after* |
502 | calling the td routines because the td routines call ps_lget* | |
503 | which affect the values stored in the registers array. */ | |
c906108c | 504 | |
e71c308d DJ |
505 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
506 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
507 | } |
508 | ||
509 | static void | |
28439f5e PA |
510 | sol_thread_store_registers (struct target_ops *ops, |
511 | struct regcache *regcache, int regnum) | |
c906108c SS |
512 | { |
513 | thread_t thread; | |
514 | td_thrhandle_t thandle; | |
515 | td_err_e val; | |
8d027a04 | 516 | prgregset_t gregset; |
c906108c | 517 | prfpregset_t fpregset; |
bcc0c096 | 518 | ptid_t ptid = regcache_get_ptid (regcache); |
c906108c | 519 | |
bcc0c096 | 520 | if (!ptid_tid_p (ptid)) |
8d027a04 | 521 | { |
28439f5e PA |
522 | struct target_ops *beneath = find_target_beneath (ops); |
523 | ||
524 | /* It's an LWP; pass the request on to the layer beneath. */ | |
525 | beneath->to_store_registers (beneath, regcache, regnum); | |
c906108c SS |
526 | return; |
527 | } | |
528 | ||
bcc0c096 SM |
529 | /* Solaris thread: convert PTID into a td_thrhandle_t. */ |
530 | thread = ptid_get_tid (ptid); | |
c906108c SS |
531 | |
532 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
533 | if (val != TD_OK) | |
8a3fe4f8 | 534 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
535 | td_err_string (val)); |
536 | ||
8d027a04 MK |
537 | if (regnum != -1) |
538 | { | |
c60c0f5f | 539 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 540 | if (val != TD_OK) |
8a3fe4f8 | 541 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
542 | td_err_string (val)); |
543 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
544 | if (val != TD_OK) | |
8a3fe4f8 | 545 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c | 546 | td_err_string (val)); |
c906108c SS |
547 | } |
548 | ||
56be3814 UW |
549 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
550 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 551 | |
c60c0f5f | 552 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 553 | if (val != TD_OK) |
8a3fe4f8 | 554 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
555 | td_err_string (val)); |
556 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
557 | if (val != TD_OK) | |
8a3fe4f8 | 558 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c | 559 | td_err_string (val)); |
c906108c SS |
560 | } |
561 | ||
8d027a04 MK |
562 | /* Perform partial transfers on OBJECT. See target_read_partial and |
563 | target_write_partial for details of each variant. One, and only | |
564 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 | 565 | |
9b409511 | 566 | static enum target_xfer_status |
6034ae49 | 567 | sol_thread_xfer_partial (struct target_ops *ops, enum target_object object, |
b6958cfb MK |
568 | const char *annex, gdb_byte *readbuf, |
569 | const gdb_byte *writebuf, | |
9b409511 | 570 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
6034ae49 | 571 | { |
9b409511 | 572 | enum target_xfer_status retval; |
6034ae49 | 573 | struct cleanup *old_chain; |
28439f5e | 574 | struct target_ops *beneath = find_target_beneath (ops); |
6034ae49 RM |
575 | |
576 | old_chain = save_inferior_ptid (); | |
577 | ||
dfd4cc63 | 578 | if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
579 | { |
580 | /* It's either a thread or an LWP that isn't alive. Any live | |
581 | LWP will do so use the first available. | |
582 | ||
583 | NOTE: We don't need to call switch_to_thread; we're just | |
584 | reading memory. */ | |
585 | inferior_ptid = procfs_first_available (); | |
586 | } | |
6034ae49 | 587 | |
9b409511 YQ |
588 | retval = beneath->to_xfer_partial (beneath, object, annex, readbuf, |
589 | writebuf, offset, len, xfered_len); | |
6034ae49 RM |
590 | |
591 | do_cleanups (old_chain); | |
592 | ||
593 | return retval; | |
594 | } | |
595 | ||
c906108c | 596 | static void |
28439f5e | 597 | check_for_thread_db (void) |
c906108c | 598 | { |
28439f5e PA |
599 | td_err_e err; |
600 | ptid_t ptid; | |
c906108c | 601 | |
9a362b9a PA |
602 | /* Don't attempt to use thread_db for remote targets. */ |
603 | if (!(target_can_run (¤t_target) || core_bfd)) | |
604 | return; | |
605 | ||
28439f5e PA |
606 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
607 | if (p_td_ta_new == NULL) | |
608 | return; | |
c906108c | 609 | |
28439f5e PA |
610 | if (sol_thread_active) |
611 | /* Nothing to do. The thread library was already detected and the | |
612 | target vector was already activated. */ | |
613 | return; | |
c906108c | 614 | |
28439f5e PA |
615 | /* Now, initialize libthread_db. This needs to be done after the |
616 | shared libraries are located because it needs information from | |
617 | the user's thread library. */ | |
c906108c | 618 | |
28439f5e PA |
619 | err = p_td_init (); |
620 | if (err != TD_OK) | |
621 | { | |
622 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
623 | return; | |
624 | } | |
c906108c | 625 | |
28439f5e PA |
626 | /* Now attempt to open a connection to the thread library. */ |
627 | err = p_td_ta_new (&main_ph, &main_ta); | |
628 | switch (err) | |
c906108c | 629 | { |
28439f5e PA |
630 | case TD_NOLIBTHREAD: |
631 | /* No thread library was detected. */ | |
632 | break; | |
2689673f | 633 | |
28439f5e PA |
634 | case TD_OK: |
635 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 636 | |
28439f5e | 637 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 638 | push_target (&sol_thread_ops); |
28439f5e | 639 | sol_thread_active = 1; |
c906108c | 640 | |
28439f5e | 641 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f | 642 | ptid = lwp_to_thread (inferior_ptid); |
dfd4cc63 | 643 | if (ptid_get_pid (ptid) != -1) |
28439f5e PA |
644 | inferior_ptid = ptid; |
645 | ||
e8032dde | 646 | target_update_thread_list (); |
28439f5e PA |
647 | break; |
648 | ||
649 | default: | |
650 | warning (_("Cannot initialize thread debugging library: %s"), | |
651 | td_err_string (err)); | |
652 | break; | |
c906108c SS |
653 | } |
654 | } | |
655 | ||
8d027a04 MK |
656 | /* This routine is called whenever a new symbol table is read in, or |
657 | when all symbol tables are removed. libthread_db can only be | |
658 | initialized when it finds the right variables in libthread.so. | |
659 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 660 | the library gets mapped and the symbol table is read in. */ |
c906108c | 661 | |
06d3b283 | 662 | static void |
fba45db2 | 663 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 664 | { |
28439f5e PA |
665 | if (objfile != NULL) |
666 | check_for_thread_db (); | |
c906108c SS |
667 | } |
668 | ||
669 | /* Clean up after the inferior dies. */ | |
670 | ||
671 | static void | |
136d6dae | 672 | sol_thread_mourn_inferior (struct target_ops *ops) |
c906108c | 673 | { |
28439f5e PA |
674 | struct target_ops *beneath = find_target_beneath (ops); |
675 | ||
2689673f | 676 | sol_thread_active = 0; |
c906108c | 677 | |
28439f5e | 678 | unpush_target (ops); |
c906108c | 679 | |
28439f5e | 680 | beneath->to_mourn_inferior (beneath); |
c906108c SS |
681 | } |
682 | ||
8d027a04 MK |
683 | /* Return true if PTID is still active in the inferior. */ |
684 | ||
c906108c | 685 | static int |
28439f5e | 686 | sol_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 687 | { |
dfd4cc63 | 688 | if (ptid_tid_p (ptid)) |
c906108c | 689 | { |
8d027a04 | 690 | /* It's a (user-level) thread. */ |
c906108c SS |
691 | td_err_e val; |
692 | td_thrhandle_t th; | |
39f77062 | 693 | int pid; |
c906108c | 694 | |
dfd4cc63 | 695 | pid = ptid_get_tid (ptid); |
c906108c | 696 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
8d027a04 | 697 | return 0; /* Thread not found. */ |
c906108c | 698 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
8d027a04 MK |
699 | return 0; /* Thread not valid. */ |
700 | return 1; /* Known thread. */ | |
c906108c | 701 | } |
c5aa993b | 702 | else |
c906108c | 703 | { |
28439f5e PA |
704 | struct target_ops *beneath = find_target_beneath (ops); |
705 | ||
706 | /* It's an LPW; pass the request on to the layer below. */ | |
707 | return beneath->to_thread_alive (beneath, ptid); | |
c906108c SS |
708 | } |
709 | } | |
710 | ||
c906108c | 711 | \f |
8d027a04 MK |
712 | /* These routines implement the lower half of the thread_db interface, |
713 | i.e. the ps_* routines. */ | |
c906108c | 714 | |
8d027a04 MK |
715 | /* Various versions of <proc_service.h> have slightly different |
716 | function prototypes. In particular, we have | |
c906108c | 717 | |
c5aa993b JM |
718 | NEWER OLDER |
719 | struct ps_prochandle * const struct ps_prochandle * | |
720 | void* char* | |
8d027a04 MK |
721 | const void* char* |
722 | int size_t | |
c906108c | 723 | |
8d027a04 MK |
724 | Which one you have depends on the Solaris version and what patches |
725 | you've applied. On the theory that there are only two major | |
726 | variants, we have configure check the prototype of ps_pdwrite (), | |
c378eb4e | 727 | and use that info to make appropriate typedefs here. */ |
c906108c SS |
728 | |
729 | #ifdef PROC_SERVICE_IS_OLD | |
c5aa993b JM |
730 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
731 | typedef char *gdb_ps_read_buf_t; | |
732 | typedef char *gdb_ps_write_buf_t; | |
c906108c | 733 | typedef int gdb_ps_size_t; |
76e1ee85 | 734 | typedef psaddr_t gdb_ps_addr_t; |
c906108c | 735 | #else |
c5aa993b JM |
736 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
737 | typedef void *gdb_ps_read_buf_t; | |
738 | typedef const void *gdb_ps_write_buf_t; | |
c906108c | 739 | typedef size_t gdb_ps_size_t; |
291dcb3e | 740 | typedef psaddr_t gdb_ps_addr_t; |
c906108c SS |
741 | #endif |
742 | ||
8d027a04 MK |
743 | /* The next four routines are called by libthread_db to tell us to |
744 | stop and stop a particular process or lwp. Since GDB ensures that | |
745 | these are all stopped by the time we call anything in thread_db, | |
746 | these routines need to do nothing. */ | |
c906108c | 747 | |
8d027a04 | 748 | /* Process stop. */ |
d4f3574e | 749 | |
c906108c SS |
750 | ps_err_e |
751 | ps_pstop (gdb_ps_prochandle_t ph) | |
752 | { | |
753 | return PS_OK; | |
754 | } | |
755 | ||
8d027a04 | 756 | /* Process continue. */ |
d4f3574e | 757 | |
c906108c SS |
758 | ps_err_e |
759 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
760 | { | |
761 | return PS_OK; | |
762 | } | |
763 | ||
8d027a04 | 764 | /* LWP stop. */ |
d4f3574e | 765 | |
c906108c SS |
766 | ps_err_e |
767 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
768 | { | |
769 | return PS_OK; | |
770 | } | |
771 | ||
8d027a04 | 772 | /* LWP continue. */ |
d4f3574e | 773 | |
c906108c SS |
774 | ps_err_e |
775 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
776 | { | |
777 | return PS_OK; | |
778 | } | |
779 | ||
d4f3574e SS |
780 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
781 | ||
c906108c SS |
782 | ps_err_e |
783 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
8d027a04 | 784 | const char *ld_symbol_name, gdb_ps_addr_t *ld_symbol_addr) |
c906108c | 785 | { |
3b7344d5 | 786 | struct bound_minimal_symbol ms; |
c906108c SS |
787 | |
788 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
3b7344d5 | 789 | if (!ms.minsym) |
c906108c SS |
790 | return PS_NOSYM; |
791 | ||
d3c1a85f | 792 | *ld_symbol_addr = BMSYMBOL_VALUE_ADDRESS (ms); |
c906108c SS |
793 | return PS_OK; |
794 | } | |
795 | ||
796 | /* Common routine for reading and writing memory. */ | |
797 | ||
798 | static ps_err_e | |
291dcb3e | 799 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
019c1128 | 800 | gdb_byte *buf, int size) |
c906108c | 801 | { |
28439f5e | 802 | int ret; |
c906108c SS |
803 | struct cleanup *old_chain; |
804 | ||
39f77062 | 805 | old_chain = save_inferior_ptid (); |
c906108c | 806 | |
dfd4cc63 | 807 | if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
808 | { |
809 | /* It's either a thread or an LWP that isn't alive. Any live | |
810 | LWP will do so use the first available. | |
811 | ||
812 | NOTE: We don't need to call switch_to_thread; we're just | |
813 | reading memory. */ | |
814 | inferior_ptid = procfs_first_available (); | |
815 | } | |
c906108c | 816 | |
23e04971 MS |
817 | #if defined (__sparcv9) |
818 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
819 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 820 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
821 | addr &= 0xffffffff; |
822 | #endif | |
823 | ||
28439f5e | 824 | if (dowrite) |
0c4f667c | 825 | ret = target_write_memory (addr, (gdb_byte *) buf, size); |
28439f5e | 826 | else |
0c4f667c | 827 | ret = target_read_memory (addr, (gdb_byte *) buf, size); |
c906108c SS |
828 | |
829 | do_cleanups (old_chain); | |
830 | ||
28439f5e | 831 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
832 | } |
833 | ||
d4f3574e SS |
834 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
835 | ||
c906108c | 836 | ps_err_e |
291dcb3e | 837 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
838 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
839 | { | |
b196bc4c | 840 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
841 | } |
842 | ||
d4f3574e SS |
843 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
844 | ||
c906108c | 845 | ps_err_e |
291dcb3e | 846 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
847 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
848 | { | |
019c1128 | 849 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
850 | } |
851 | ||
d4f3574e SS |
852 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
853 | ||
c906108c | 854 | ps_err_e |
291dcb3e | 855 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
856 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
857 | { | |
b196bc4c | 858 | return rw_common (0, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
859 | } |
860 | ||
d4f3574e SS |
861 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
862 | ||
c906108c | 863 | ps_err_e |
291dcb3e | 864 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
865 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
866 | { | |
019c1128 | 867 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
868 | } |
869 | ||
8d027a04 | 870 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
871 | |
872 | ps_err_e | |
8d027a04 | 873 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c | 874 | { |
3e00d44f SM |
875 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
876 | struct regcache *regcache | |
877 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c5aa993b | 878 | |
28439f5e | 879 | target_fetch_registers (regcache, -1); |
594f7785 | 880 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c | 881 | |
c906108c SS |
882 | return PS_OK; |
883 | } | |
884 | ||
8d027a04 | 885 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
886 | |
887 | ps_err_e | |
888 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
889 | const prgregset_t gregset) | |
890 | { | |
3e00d44f SM |
891 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
892 | struct regcache *regcache | |
893 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c5aa993b | 894 | |
594f7785 | 895 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 896 | target_store_registers (regcache, -1); |
c906108c | 897 | |
c906108c SS |
898 | return PS_OK; |
899 | } | |
900 | ||
d4f3574e SS |
901 | /* Log a message (sends to gdb_stderr). */ |
902 | ||
c906108c | 903 | void |
8d027a04 | 904 | ps_plog (const char *fmt, ...) |
c906108c SS |
905 | { |
906 | va_list args; | |
907 | ||
908 | va_start (args, fmt); | |
909 | ||
910 | vfprintf_filtered (gdb_stderr, fmt, args); | |
911 | } | |
912 | ||
c1357578 JB |
913 | /* Get size of extra register set. Currently a noop. */ |
914 | ||
915 | ps_err_e | |
916 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
917 | { | |
918 | return PS_OK; | |
919 | } | |
920 | ||
921 | /* Get extra register set. Currently a noop. */ | |
922 | ||
923 | ps_err_e | |
924 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
925 | { | |
926 | return PS_OK; | |
927 | } | |
928 | ||
929 | /* Set extra register set. Currently a noop. */ | |
930 | ||
931 | ps_err_e | |
932 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
933 | { | |
934 | return PS_OK; | |
935 | } | |
936 | ||
8d027a04 | 937 | /* Get floating-point registers for LWP. */ |
c906108c SS |
938 | |
939 | ps_err_e | |
940 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
8d027a04 | 941 | prfpregset_t *fpregset) |
c906108c | 942 | { |
3e00d44f SM |
943 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
944 | struct regcache *regcache | |
945 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c906108c | 946 | |
28439f5e | 947 | target_fetch_registers (regcache, -1); |
594f7785 | 948 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c | 949 | |
c906108c SS |
950 | return PS_OK; |
951 | } | |
952 | ||
c378eb4e | 953 | /* Set floating-point regs for LWP. */ |
c906108c SS |
954 | |
955 | ps_err_e | |
956 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
c5aa993b | 957 | const prfpregset_t * fpregset) |
c906108c | 958 | { |
3e00d44f SM |
959 | ptid_t ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
960 | struct regcache *regcache | |
961 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
c5aa993b | 962 | |
594f7785 | 963 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 964 | target_store_registers (regcache, -1); |
c906108c | 965 | |
c906108c SS |
966 | return PS_OK; |
967 | } | |
968 | ||
23715f29 | 969 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
970 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
971 | BFD to do this. There might be a more Solaris-specific | |
972 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
973 | |
974 | ps_err_e | |
975 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) | |
976 | { | |
977 | if (exec_bfd == 0) | |
a95ac8b6 PS |
978 | *data_model = PR_MODEL_UNKNOWN; |
979 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
980 | *data_model = PR_MODEL_ILP32; |
981 | else | |
982 | *data_model = PR_MODEL_LP64; | |
983 | ||
984 | return PS_OK; | |
985 | } | |
23715f29 | 986 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 987 | |
965b60ee | 988 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 989 | |
965b60ee JB |
990 | /* Reads the local descriptor table of a LWP. |
991 | ||
992 | This function is necessary on x86-solaris only. Without it, the loading | |
993 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 994 | |
c906108c SS |
995 | ps_err_e |
996 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
997 | struct ssd *pldt) | |
998 | { | |
8d027a04 | 999 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
05e28a7b | 1000 | struct ssd *ret; |
c906108c | 1001 | |
8d027a04 MK |
1002 | /* FIXME: can't I get the process ID from the prochandle or |
1003 | something? */ | |
2f09097b | 1004 | |
dfd4cc63 | 1005 | if (ptid_get_pid (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
1006 | return PS_BADLID; |
1007 | ||
dfd4cc63 LM |
1008 | ret = procfs_find_LDT_entry (ptid_build (ptid_get_pid (inferior_ptid), |
1009 | lwpid, 0)); | |
05e28a7b | 1010 | if (ret) |
c906108c | 1011 | { |
05e28a7b AC |
1012 | memcpy (pldt, ret, sizeof (struct ssd)); |
1013 | return PS_OK; | |
c906108c | 1014 | } |
8d027a04 MK |
1015 | else |
1016 | /* LDT not found. */ | |
c906108c | 1017 | return PS_ERR; |
c5aa993b | 1018 | } |
965b60ee | 1019 | #endif |
c906108c | 1020 | \f |
8d027a04 MK |
1021 | |
1022 | /* Convert PTID to printable form. */ | |
c906108c | 1023 | |
7a114964 | 1024 | static const char * |
117de6a9 | 1025 | solaris_pid_to_str (struct target_ops *ops, ptid_t ptid) |
c906108c SS |
1026 | { |
1027 | static char buf[100]; | |
1028 | ||
dfd4cc63 | 1029 | if (ptid_tid_p (ptid)) |
c906108c | 1030 | { |
39f77062 | 1031 | ptid_t lwp; |
c906108c | 1032 | |
39f77062 | 1033 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1034 | |
dfd4cc63 | 1035 | if (ptid_get_pid (lwp) == -1) |
8c042590 | 1036 | xsnprintf (buf, sizeof (buf), "Thread %ld (defunct)", |
dfd4cc63 LM |
1037 | ptid_get_tid (ptid)); |
1038 | else if (ptid_get_pid (lwp) != -2) | |
8c042590 | 1039 | xsnprintf (buf, sizeof (buf), "Thread %ld (LWP %ld)", |
dfd4cc63 | 1040 | ptid_get_tid (ptid), ptid_get_lwp (lwp)); |
c906108c | 1041 | else |
dfd4cc63 LM |
1042 | xsnprintf (buf, sizeof (buf), "Thread %ld ", |
1043 | ptid_get_tid (ptid)); | |
c906108c | 1044 | } |
dfd4cc63 LM |
1045 | else if (ptid_get_lwp (ptid) != 0) |
1046 | xsnprintf (buf, sizeof (buf), "LWP %ld ", ptid_get_lwp (ptid)); | |
c906108c | 1047 | else |
dfd4cc63 | 1048 | xsnprintf (buf, sizeof (buf), "process %d ", ptid_get_pid (ptid)); |
c906108c SS |
1049 | |
1050 | return buf; | |
1051 | } | |
1052 | \f | |
1053 | ||
e8032dde | 1054 | /* Worker bee for update_thread_list. Callback function that gets |
8d027a04 | 1055 | called once per user-level thread (i.e. not for LWP's). */ |
c906108c SS |
1056 | |
1057 | static int | |
e8032dde | 1058 | sol_update_thread_list_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1059 | { |
1060 | td_err_e retval; | |
1061 | td_thrinfo_t ti; | |
39f77062 | 1062 | ptid_t ptid; |
c906108c | 1063 | |
8d027a04 MK |
1064 | retval = p_td_thr_get_info (th, &ti); |
1065 | if (retval != TD_OK) | |
1066 | return -1; | |
1067 | ||
dfd4cc63 | 1068 | ptid = ptid_build (ptid_get_pid (inferior_ptid), 0, ti.ti_tid); |
2689673f | 1069 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1070 | add_thread (ptid); |
c906108c SS |
1071 | |
1072 | return 0; | |
1073 | } | |
1074 | ||
d4f3574e | 1075 | static void |
e8032dde | 1076 | sol_update_thread_list (struct target_ops *ops) |
c906108c | 1077 | { |
28439f5e | 1078 | struct target_ops *beneath = find_target_beneath (ops); |
8d027a04 | 1079 | |
e8032dde PA |
1080 | /* Delete dead threads. */ |
1081 | prune_threads (); | |
1082 | ||
1083 | /* Find any new LWP's. */ | |
1084 | beneath->to_update_thread_list (beneath); | |
8d027a04 MK |
1085 | |
1086 | /* Then find any new user-level threads. */ | |
e8032dde | 1087 | p_td_ta_thr_iter (main_ta, sol_update_thread_list_callback, (void *) 0, |
c906108c SS |
1088 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1089 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1090 | } | |
1091 | ||
8d027a04 MK |
1092 | /* Worker bee for the "info sol-thread" command. This is a callback |
1093 | function that gets called once for each Solaris user-level thread | |
1094 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1095 | that we can think of. */ | |
c906108c | 1096 | |
c5aa993b | 1097 | static int |
fba45db2 | 1098 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1099 | { |
1100 | td_err_e ret; | |
1101 | td_thrinfo_t ti; | |
c906108c | 1102 | |
8d027a04 MK |
1103 | ret = p_td_thr_get_info (th, &ti); |
1104 | if (ret == TD_OK) | |
c906108c | 1105 | { |
c5aa993b JM |
1106 | printf_filtered ("%s thread #%d, lwp %d, ", |
1107 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1108 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1109 | switch (ti.ti_state) |
1110 | { | |
c906108c | 1111 | default: |
c5aa993b JM |
1112 | case TD_THR_UNKNOWN: |
1113 | printf_filtered ("<unknown state>"); | |
1114 | break; | |
1115 | case TD_THR_STOPPED: | |
1116 | printf_filtered ("(stopped)"); | |
1117 | break; | |
1118 | case TD_THR_RUN: | |
1119 | printf_filtered ("(run) "); | |
1120 | break; | |
1121 | case TD_THR_ACTIVE: | |
1122 | printf_filtered ("(active) "); | |
1123 | break; | |
1124 | case TD_THR_ZOMBIE: | |
1125 | printf_filtered ("(zombie) "); | |
1126 | break; | |
1127 | case TD_THR_SLEEP: | |
1128 | printf_filtered ("(asleep) "); | |
1129 | break; | |
1130 | case TD_THR_STOPPED_ASLEEP: | |
1131 | printf_filtered ("(stopped asleep)"); | |
1132 | break; | |
1133 | } | |
8d027a04 | 1134 | /* Print thr_create start function. */ |
c906108c | 1135 | if (ti.ti_startfunc != 0) |
4ce44c66 | 1136 | { |
5812197c JB |
1137 | const struct bound_minimal_symbol msym |
1138 | = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1139 | ||
17e760ae JB |
1140 | printf_filtered (" startfunc=%s", |
1141 | msym.minsym | |
d3c1a85f | 1142 | ? MSYMBOL_PRINT_NAME (msym.minsym) |
17e760ae | 1143 | : paddress (target_gdbarch (), ti.ti_startfunc)); |
4ce44c66 | 1144 | } |
c906108c | 1145 | |
8d027a04 | 1146 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1147 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 | 1148 | { |
5812197c JB |
1149 | const struct bound_minimal_symbol msym |
1150 | = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1151 | ||
17e760ae JB |
1152 | printf_filtered (" sleepfunc=%s", |
1153 | msym.minsym | |
d3c1a85f | 1154 | ? MSYMBOL_PRINT_NAME (msym.minsym) |
17e760ae | 1155 | : paddress (target_gdbarch (), ti.ti_pc)); |
4ce44c66 | 1156 | } |
c906108c | 1157 | |
c0f5f490 | 1158 | printf_filtered ("\n"); |
c906108c SS |
1159 | } |
1160 | else | |
8a3fe4f8 | 1161 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1162 | |
c5aa993b | 1163 | return 0; |
c906108c SS |
1164 | } |
1165 | ||
8d027a04 MK |
1166 | /* List some state about each Solaris user-level thread in the |
1167 | inferior. */ | |
c906108c SS |
1168 | |
1169 | static void | |
fba45db2 | 1170 | info_solthreads (char *args, int from_tty) |
c906108c | 1171 | { |
c5aa993b | 1172 | p_td_ta_thr_iter (main_ta, info_cb, args, |
c906108c SS |
1173 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1174 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1175 | } | |
c906108c | 1176 | |
3caf13b4 JB |
1177 | /* Callback routine used to find a thread based on the TID part of |
1178 | its PTID. */ | |
1179 | ||
1180 | static int | |
1181 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1182 | { | |
1183 | long *tid = (long *) data; | |
1184 | ||
1185 | if (ptid_get_tid (thread->ptid) == *tid) | |
1186 | return 1; | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | static ptid_t | |
1e6b91a4 | 1192 | sol_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
3caf13b4 JB |
1193 | { |
1194 | struct thread_info *thread_info = | |
1195 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1196 | ||
1197 | if (thread_info == NULL) | |
1198 | { | |
1199 | /* The list of threads is probably not up to date. Find any | |
1200 | thread that is missing from the list, and try again. */ | |
e8032dde | 1201 | sol_update_thread_list (¤t_target); |
3caf13b4 JB |
1202 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, |
1203 | &thread); | |
1204 | } | |
1205 | ||
1206 | gdb_assert (thread_info != NULL); | |
1207 | ||
1208 | return (thread_info->ptid); | |
1209 | } | |
1210 | ||
c906108c | 1211 | static void |
fba45db2 | 1212 | init_sol_thread_ops (void) |
c906108c SS |
1213 | { |
1214 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1215 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1216 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
c906108c SS |
1217 | sol_thread_ops.to_detach = sol_thread_detach; |
1218 | sol_thread_ops.to_resume = sol_thread_resume; | |
1219 | sol_thread_ops.to_wait = sol_thread_wait; | |
1220 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1221 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
6034ae49 | 1222 | sol_thread_ops.to_xfer_partial = sol_thread_xfer_partial; |
c906108c | 1223 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
c906108c | 1224 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
ed9a39eb | 1225 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
e8032dde | 1226 | sol_thread_ops.to_update_thread_list = sol_update_thread_list; |
28439f5e | 1227 | sol_thread_ops.to_stratum = thread_stratum; |
3caf13b4 | 1228 | sol_thread_ops.to_get_ada_task_ptid = sol_get_ada_task_ptid; |
c906108c SS |
1229 | sol_thread_ops.to_magic = OPS_MAGIC; |
1230 | } | |
1231 | ||
02f1df11 JB |
1232 | /* Silence -Wmissing-prototypes. */ |
1233 | extern void _initialize_sol_thread (void); | |
1234 | ||
c906108c | 1235 | void |
fba45db2 | 1236 | _initialize_sol_thread (void) |
c906108c SS |
1237 | { |
1238 | void *dlhandle; | |
1239 | ||
1240 | init_sol_thread_ops (); | |
c906108c SS |
1241 | |
1242 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1243 | if (!dlhandle) | |
1244 | goto die; | |
1245 | ||
1246 | #define resolve(X) \ | |
b196bc4c | 1247 | if (!(p_##X = (X ## _ftype *) dlsym (dlhandle, #X))) \ |
c906108c SS |
1248 | goto die; |
1249 | ||
1250 | resolve (td_log); | |
1251 | resolve (td_ta_new); | |
1252 | resolve (td_ta_delete); | |
1253 | resolve (td_init); | |
1254 | resolve (td_ta_get_ph); | |
1255 | resolve (td_ta_get_nthreads); | |
1256 | resolve (td_ta_tsd_iter); | |
1257 | resolve (td_ta_thr_iter); | |
1258 | resolve (td_thr_validate); | |
1259 | resolve (td_thr_tsd); | |
1260 | resolve (td_thr_get_info); | |
1261 | resolve (td_thr_getfpregs); | |
1262 | resolve (td_thr_getxregsize); | |
1263 | resolve (td_thr_getxregs); | |
1264 | resolve (td_thr_sigsetmask); | |
1265 | resolve (td_thr_setprio); | |
1266 | resolve (td_thr_setsigpending); | |
1267 | resolve (td_thr_setfpregs); | |
1268 | resolve (td_thr_setxregs); | |
1269 | resolve (td_ta_map_id2thr); | |
1270 | resolve (td_ta_map_lwp2thr); | |
1271 | resolve (td_thr_getgregs); | |
1272 | resolve (td_thr_setgregs); | |
1273 | ||
12070676 | 1274 | complete_target_initialization (&sol_thread_ops); |
c906108c | 1275 | |
c5aa993b | 1276 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1277 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1278 | |
8d027a04 | 1279 | /* Hook into new_objfile notification. */ |
06d3b283 | 1280 | observer_attach_new_objfile (sol_thread_new_objfile); |
c906108c SS |
1281 | return; |
1282 | ||
8d027a04 MK |
1283 | die: |
1284 | fprintf_unfiltered (gdb_stderr, "\ | |
1285 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1286 | |
1287 | if (dlhandle) | |
1288 | dlclose (dlhandle); | |
1289 | ||
c906108c SS |
1290 | return; |
1291 | } |