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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
28e7fd62 | 3 | Copyright (C) 1996-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | /* This module implements a sort of half target that sits between the | |
8d027a04 MK |
21 | machine-independent parts of GDB and the /proc interface (procfs.c) |
22 | to provide access to the Solaris user-mode thread implementation. | |
23 | ||
24 | Solaris threads are true user-mode threads, which are invoked via | |
25 | the thr_* and pthread_* (native and POSIX respectivly) interfaces. | |
26 | These are mostly implemented in user-space, with all thread context | |
27 | kept in various structures that live in the user's heap. These | |
28 | should not be confused with lightweight processes (LWPs), which are | |
29 | implemented by the kernel, and scheduled without explicit | |
30 | intervention by the process. | |
31 | ||
32 | Just to confuse things a little, Solaris threads (both native and | |
33 | POSIX) are actually implemented using LWPs. In general, there are | |
34 | going to be more threads than LWPs. There is no fixed | |
35 | correspondence between a thread and an LWP. When a thread wants to | |
36 | run, it gets scheduled onto the first available LWP and can | |
37 | therefore migrate from one LWP to another as time goes on. A | |
c906108c SS |
38 | sleeping thread may not be associated with an LWP at all! |
39 | ||
8d027a04 MK |
40 | To make it possible to mess with threads, Sun provides a library |
41 | called libthread_db.so.1 (not to be confused with | |
42 | libthread_db.so.0, which doesn't have a published interface). This | |
43 | interface has an upper part, which it provides, and a lower part | |
44 | which we provide. The upper part consists of the td_* routines, | |
45 | which allow us to find all the threads, query their state, etc... | |
46 | The lower part consists of all of the ps_*, which are used by the | |
47 | td_* routines to read/write memory, manipulate LWPs, lookup | |
48 | symbols, etc... The ps_* routines actually do most of their work | |
49 | by calling functions in procfs.c. */ | |
c906108c SS |
50 | |
51 | #include "defs.h" | |
52 | #include <thread.h> | |
53 | #include <proc_service.h> | |
54 | #include <thread_db.h> | |
55 | #include "gdbthread.h" | |
56 | #include "target.h" | |
57 | #include "inferior.h" | |
58 | #include <fcntl.h> | |
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" |
0e9f083f | 67 | #include <string.h> |
d1a7880c | 68 | #include "procfs.h" |
6f4492c8 | 69 | |
c906108c | 70 | struct target_ops sol_thread_ops; |
c906108c | 71 | |
c378eb4e | 72 | /* Prototypes for supply_gregset etc. */ |
c60c0f5f | 73 | #include "gregset.h" |
c906108c | 74 | |
8d027a04 MK |
75 | /* This struct is defined by us, but mainly used for the proc_service |
76 | interface. We don't have much use for it, except as a handy place | |
77 | to get a real PID for memory accesses. */ | |
c906108c SS |
78 | |
79 | struct ps_prochandle | |
8d027a04 MK |
80 | { |
81 | ptid_t ptid; | |
82 | }; | |
c906108c SS |
83 | |
84 | struct string_map | |
8d027a04 MK |
85 | { |
86 | int num; | |
87 | char *str; | |
88 | }; | |
c906108c SS |
89 | |
90 | static struct ps_prochandle main_ph; | |
91 | static td_thragent_t *main_ta; | |
92 | static int sol_thread_active = 0; | |
93 | ||
a14ed312 | 94 | static void init_sol_thread_ops (void); |
c906108c | 95 | |
8d027a04 MK |
96 | /* Default definitions: These must be defined in tm.h if they are to |
97 | be shared with a process module such as procfs. */ | |
d4f3574e | 98 | |
8d027a04 MK |
99 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
100 | ||
101 | static void (*p_td_log)(const int on_off); | |
102 | static td_err_e (*p_td_ta_new)(const struct ps_prochandle *ph_p, | |
103 | td_thragent_t **ta_pp); | |
104 | static td_err_e (*p_td_ta_delete)(td_thragent_t *ta_p); | |
105 | static td_err_e (*p_td_init)(void); | |
106 | static td_err_e (*p_td_ta_get_ph)(const td_thragent_t *ta_p, | |
107 | struct ps_prochandle **ph_pp); | |
108 | static td_err_e (*p_td_ta_get_nthreads)(const td_thragent_t *ta_p, | |
109 | int *nthread_p); | |
110 | static td_err_e (*p_td_ta_tsd_iter)(const td_thragent_t *ta_p, | |
111 | td_key_iter_f *cb, void *cbdata_p); | |
112 | static td_err_e (*p_td_ta_thr_iter)(const td_thragent_t *ta_p, | |
113 | td_thr_iter_f *cb, void *cbdata_p, | |
114 | td_thr_state_e state, int ti_pri, | |
115 | sigset_t *ti_sigmask_p, | |
116 | unsigned ti_user_flags); | |
117 | static td_err_e (*p_td_thr_validate)(const td_thrhandle_t *th_p); | |
118 | static td_err_e (*p_td_thr_tsd)(const td_thrhandle_t * th_p, | |
119 | const thread_key_t key, void **data_pp); | |
120 | static td_err_e (*p_td_thr_get_info)(const td_thrhandle_t *th_p, | |
121 | td_thrinfo_t *ti_p); | |
122 | static td_err_e (*p_td_thr_getfpregs)(const td_thrhandle_t *th_p, | |
123 | prfpregset_t *fpregset); | |
124 | static td_err_e (*p_td_thr_getxregsize)(const td_thrhandle_t *th_p, | |
125 | int *xregsize); | |
126 | static td_err_e (*p_td_thr_getxregs)(const td_thrhandle_t *th_p, | |
127 | const caddr_t xregset); | |
128 | static td_err_e (*p_td_thr_sigsetmask)(const td_thrhandle_t *th_p, | |
129 | const sigset_t ti_sigmask); | |
130 | static td_err_e (*p_td_thr_setprio)(const td_thrhandle_t *th_p, | |
131 | const int ti_pri); | |
132 | static td_err_e (*p_td_thr_setsigpending)(const td_thrhandle_t *th_p, | |
133 | const uchar_t ti_pending_flag, | |
134 | const sigset_t ti_pending); | |
135 | static td_err_e (*p_td_thr_setfpregs)(const td_thrhandle_t *th_p, | |
136 | const prfpregset_t *fpregset); | |
137 | static td_err_e (*p_td_thr_setxregs)(const td_thrhandle_t *th_p, | |
138 | const caddr_t xregset); | |
139 | static td_err_e (*p_td_ta_map_id2thr)(const td_thragent_t *ta_p, | |
140 | thread_t tid, | |
141 | td_thrhandle_t *th_p); | |
142 | static td_err_e (*p_td_ta_map_lwp2thr)(const td_thragent_t *ta_p, | |
143 | lwpid_t lwpid, | |
144 | td_thrhandle_t *th_p); | |
145 | static td_err_e (*p_td_thr_getgregs)(const td_thrhandle_t *th_p, | |
146 | prgregset_t regset); | |
147 | static td_err_e (*p_td_thr_setgregs)(const td_thrhandle_t *th_p, | |
148 | const prgregset_t regset); | |
149 | \f | |
c906108c | 150 | |
8d027a04 MK |
151 | /* Return the libthread_db error string associated with ERRCODE. If |
152 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c SS |
153 | |
154 | static char * | |
fba45db2 | 155 | td_err_string (td_err_e errcode) |
c906108c | 156 | { |
8d027a04 | 157 | static struct string_map td_err_table[] = |
c5aa993b | 158 | { |
8d027a04 MK |
159 | { TD_OK, "generic \"call succeeded\"" }, |
160 | { TD_ERR, "generic error." }, | |
161 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
162 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
163 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
164 | { TD_BADPH, "invalid process handle" }, | |
165 | { TD_BADTH, "invalid thread handle" }, | |
166 | { TD_BADSH, "invalid synchronization handle" }, | |
167 | { TD_BADTA, "invalid thread agent" }, | |
168 | { TD_BADKEY, "invalid key" }, | |
169 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
170 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
171 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
172 | { TD_NOEVENT, "requested event is not supported" }, | |
173 | { TD_NOCAPAB, "capability not available" }, | |
174 | { TD_DBERR, "Debugger service failed" }, | |
175 | { TD_NOAPLIC, "Operation not applicable to" }, | |
176 | { TD_NOTSD, "No thread specific data for this thread" }, | |
177 | { TD_MALLOC, "Malloc failed" }, | |
178 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
179 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 180 | }; |
c906108c SS |
181 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
182 | int i; | |
183 | static char buf[50]; | |
184 | ||
185 | for (i = 0; i < td_err_size; i++) | |
186 | if (td_err_table[i].num == errcode) | |
187 | return td_err_table[i].str; | |
c5aa993b | 188 | |
8c042590 PM |
189 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db error code: %d", |
190 | errcode); | |
c906108c SS |
191 | |
192 | return buf; | |
193 | } | |
c906108c | 194 | |
b021a221 | 195 | /* Return the libthread_db state string assicoated with STATECODE. |
8d027a04 | 196 | If STATECODE is unknown, return an appropriate message. */ |
c906108c SS |
197 | |
198 | static char * | |
fba45db2 | 199 | td_state_string (td_thr_state_e statecode) |
c906108c | 200 | { |
8d027a04 | 201 | static struct string_map td_thr_state_table[] = |
c5aa993b | 202 | { |
8d027a04 MK |
203 | { TD_THR_ANY_STATE, "any state" }, |
204 | { TD_THR_UNKNOWN, "unknown" }, | |
205 | { TD_THR_STOPPED, "stopped" }, | |
206 | { TD_THR_RUN, "run" }, | |
207 | { TD_THR_ACTIVE, "active" }, | |
208 | { TD_THR_ZOMBIE, "zombie" }, | |
209 | { TD_THR_SLEEP, "sleep" }, | |
210 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 211 | }; |
8d027a04 MK |
212 | const int td_thr_state_table_size = |
213 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
214 | int i; |
215 | static char buf[50]; | |
216 | ||
217 | for (i = 0; i < td_thr_state_table_size; i++) | |
218 | if (td_thr_state_table[i].num == statecode) | |
219 | return td_thr_state_table[i].str; | |
c5aa993b | 220 | |
8c042590 PM |
221 | xsnprintf (buf, sizeof (buf), "Unknown libthread_db state code: %d", |
222 | statecode); | |
c906108c SS |
223 | |
224 | return buf; | |
225 | } | |
226 | \f | |
c906108c | 227 | |
8d027a04 MK |
228 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
229 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 230 | DEFAULT_LWP. |
c906108c | 231 | |
8d027a04 | 232 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 233 | |
39f77062 KB |
234 | static ptid_t |
235 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
236 | { |
237 | td_thrinfo_t ti; | |
238 | td_thrhandle_t th; | |
239 | td_err_e val; | |
240 | ||
dfd4cc63 | 241 | if (ptid_lwp_p (thread_id)) |
8d027a04 | 242 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 243 | |
8d027a04 | 244 | /* It's a thread. Convert to LWP. */ |
c906108c | 245 | |
dfd4cc63 | 246 | val = p_td_ta_map_id2thr (main_ta, ptid_get_tid (thread_id), &th); |
c906108c | 247 | if (val == TD_NOTHR) |
8d027a04 | 248 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 249 | else if (val != TD_OK) |
8a3fe4f8 | 250 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
251 | |
252 | val = p_td_thr_get_info (&th, &ti); | |
253 | if (val == TD_NOTHR) | |
8d027a04 | 254 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 255 | else if (val != TD_OK) |
8a3fe4f8 | 256 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
257 | |
258 | if (ti.ti_state != TD_THR_ACTIVE) | |
259 | { | |
260 | if (default_lwp != -1) | |
39f77062 | 261 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 262 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
263 | td_state_string (ti.ti_state)); |
264 | } | |
265 | ||
dfd4cc63 | 266 | return ptid_build (ptid_get_pid (thread_id), ti.ti_lid, 0); |
c906108c | 267 | } |
c906108c | 268 | |
8d027a04 MK |
269 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
270 | doesn't exists, that's an error. | |
c906108c | 271 | |
8d027a04 | 272 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 273 | |
39f77062 KB |
274 | static ptid_t |
275 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
276 | { |
277 | td_thrinfo_t ti; | |
278 | td_thrhandle_t th; | |
279 | td_err_e val; | |
280 | ||
dfd4cc63 | 281 | if (ptid_tid_p (lwp)) |
8d027a04 | 282 | return lwp; /* It's already a thread ID. */ |
c906108c | 283 | |
8d027a04 | 284 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 285 | |
28439f5e | 286 | if (!target_thread_alive (lwp)) |
8d027a04 | 287 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c | 288 | |
dfd4cc63 | 289 | val = p_td_ta_map_lwp2thr (main_ta, ptid_get_lwp (lwp), &th); |
c906108c | 290 | if (val == TD_NOTHR) |
8d027a04 | 291 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 292 | else if (val != TD_OK) |
8a3fe4f8 | 293 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
294 | |
295 | val = p_td_thr_validate (&th); | |
296 | if (val == TD_NOTHR) | |
8d027a04 | 297 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 298 | else if (val != TD_OK) |
8a3fe4f8 | 299 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
300 | |
301 | val = p_td_thr_get_info (&th, &ti); | |
302 | if (val == TD_NOTHR) | |
8d027a04 | 303 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 304 | else if (val != TD_OK) |
8a3fe4f8 | 305 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c | 306 | |
dfd4cc63 | 307 | return ptid_build (ptid_get_pid (lwp), 0 , ti.ti_tid); |
c906108c SS |
308 | } |
309 | \f | |
c906108c | 310 | |
8d027a04 | 311 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
312 | through to the layer beneath, as they don't need to do anything |
313 | specific for threads. */ | |
c906108c | 314 | |
8d027a04 MK |
315 | /* Take a program previously attached to and detaches it. The program |
316 | resumes execution and will no longer stop on signals, etc. We'd | |
317 | better not have left any breakpoints in the program or it'll die | |
318 | when it hits one. For this to work, it may be necessary for the | |
319 | process to have been previously attached. It *might* work if the | |
320 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
321 | |
322 | static void | |
52554a0e | 323 | sol_thread_detach (struct target_ops *ops, const char *args, int from_tty) |
c906108c | 324 | { |
28439f5e PA |
325 | struct target_ops *beneath = find_target_beneath (ops); |
326 | ||
2689673f | 327 | sol_thread_active = 0; |
dfd4cc63 | 328 | inferior_ptid = pid_to_ptid (ptid_get_pid (main_ph.ptid)); |
28439f5e PA |
329 | unpush_target (ops); |
330 | beneath->to_detach (beneath, args, from_tty); | |
c906108c SS |
331 | } |
332 | ||
8d027a04 MK |
333 | /* Resume execution of process PTID. If STEP is nozero, then just |
334 | single step it. If SIGNAL is nonzero, restart it with that signal | |
335 | activated. We may have to convert PTID from a thread ID to an LWP | |
336 | ID for procfs. */ | |
c906108c SS |
337 | |
338 | static void | |
28439f5e | 339 | sol_thread_resume (struct target_ops *ops, |
2ea28649 | 340 | ptid_t ptid, int step, enum gdb_signal signo) |
c906108c SS |
341 | { |
342 | struct cleanup *old_chain; | |
28439f5e | 343 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c | 344 | |
39f77062 | 345 | old_chain = save_inferior_ptid (); |
c906108c | 346 | |
dfd4cc63 LM |
347 | inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid)); |
348 | if (ptid_get_pid (inferior_ptid) == -1) | |
39f77062 | 349 | inferior_ptid = procfs_first_available (); |
c906108c | 350 | |
dfd4cc63 | 351 | if (ptid_get_pid (ptid) != -1) |
c906108c | 352 | { |
39f77062 | 353 | ptid_t save_ptid = ptid; |
c906108c | 354 | |
39f77062 | 355 | ptid = thread_to_lwp (ptid, -2); |
dfd4cc63 | 356 | if (ptid_get_pid (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 357 | error (_("This version of Solaris can't start inactive threads.")); |
dfd4cc63 | 358 | if (info_verbose && ptid_get_pid (ptid) == -1) |
8a3fe4f8 | 359 | warning (_("Specified thread %ld seems to have terminated"), |
dfd4cc63 | 360 | ptid_get_tid (save_ptid)); |
c906108c SS |
361 | } |
362 | ||
28439f5e | 363 | beneath->to_resume (beneath, ptid, step, signo); |
c906108c SS |
364 | |
365 | do_cleanups (old_chain); | |
366 | } | |
367 | ||
2689673f | 368 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 369 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 370 | |
39f77062 | 371 | static ptid_t |
117de6a9 | 372 | sol_thread_wait (struct target_ops *ops, |
47608cb1 | 373 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
c906108c | 374 | { |
39f77062 KB |
375 | ptid_t rtnval; |
376 | ptid_t save_ptid; | |
28439f5e | 377 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c SS |
378 | struct cleanup *old_chain; |
379 | ||
39f77062 KB |
380 | save_ptid = inferior_ptid; |
381 | old_chain = save_inferior_ptid (); | |
c906108c | 382 | |
dfd4cc63 LM |
383 | inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid)); |
384 | if (ptid_get_pid (inferior_ptid) == -1) | |
39f77062 | 385 | inferior_ptid = procfs_first_available (); |
c906108c | 386 | |
dfd4cc63 | 387 | if (ptid_get_pid (ptid) != -1) |
c906108c | 388 | { |
39f77062 | 389 | ptid_t save_ptid = ptid; |
c906108c | 390 | |
39f77062 | 391 | ptid = thread_to_lwp (ptid, -2); |
dfd4cc63 | 392 | if (ptid_get_pid (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 393 | error (_("This version of Solaris can't start inactive threads.")); |
dfd4cc63 | 394 | if (info_verbose && ptid_get_pid (ptid) == -1) |
8a3fe4f8 | 395 | warning (_("Specified thread %ld seems to have terminated"), |
dfd4cc63 | 396 | ptid_get_tid (save_ptid)); |
c906108c SS |
397 | } |
398 | ||
47608cb1 | 399 | rtnval = beneath->to_wait (beneath, ptid, ourstatus, options); |
c906108c SS |
400 | |
401 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
402 | { | |
8d027a04 | 403 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 404 | rtnval = lwp_to_thread (rtnval); |
dfd4cc63 | 405 | if (ptid_get_pid (rtnval) == -1) |
39f77062 | 406 | rtnval = save_ptid; |
c906108c | 407 | |
8d027a04 | 408 | /* See if we have a new thread. */ |
dfd4cc63 | 409 | if (ptid_tid_p (rtnval) |
39f77062 | 410 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
411 | && (!in_thread_list (rtnval) |
412 | || is_exited (rtnval))) | |
93815fbf | 413 | add_thread (rtnval); |
c906108c SS |
414 | } |
415 | ||
8d027a04 MK |
416 | /* During process initialization, we may get here without the thread |
417 | package being initialized, since that can only happen after we've | |
418 | found the shared libs. */ | |
c906108c SS |
419 | |
420 | do_cleanups (old_chain); | |
421 | ||
422 | return rtnval; | |
423 | } | |
424 | ||
425 | static void | |
28439f5e PA |
426 | sol_thread_fetch_registers (struct target_ops *ops, |
427 | struct regcache *regcache, int regnum) | |
c906108c SS |
428 | { |
429 | thread_t thread; | |
430 | td_thrhandle_t thandle; | |
431 | td_err_e val; | |
432 | prgregset_t gregset; | |
433 | prfpregset_t fpregset; | |
e71c308d DJ |
434 | gdb_gregset_t *gregset_p = &gregset; |
435 | gdb_fpregset_t *fpregset_p = &fpregset; | |
28439f5e | 436 | struct target_ops *beneath = find_target_beneath (ops); |
e71c308d | 437 | |
dfd4cc63 | 438 | if (!ptid_tid_p (inferior_ptid)) |
8d027a04 | 439 | { |
28439f5e PA |
440 | /* It's an LWP; pass the request on to the layer beneath. */ |
441 | beneath->to_fetch_registers (beneath, regcache, regnum); | |
c906108c SS |
442 | return; |
443 | } | |
444 | ||
8d027a04 | 445 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
dfd4cc63 | 446 | thread = ptid_get_tid (inferior_ptid); |
c906108c | 447 | if (thread == 0) |
8a3fe4f8 | 448 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
449 | |
450 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
451 | if (val != TD_OK) | |
8a3fe4f8 | 452 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
453 | td_err_string (val)); |
454 | ||
8d027a04 | 455 | /* Get the general-purpose registers. */ |
c906108c SS |
456 | |
457 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 458 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 459 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
460 | td_err_string (val)); |
461 | ||
8d027a04 MK |
462 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
463 | and %sp are saved (by a thread context switch). */ | |
c906108c | 464 | |
8d027a04 | 465 | /* And, now the floating-point registers. */ |
c906108c SS |
466 | |
467 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 468 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 469 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
470 | td_err_string (val)); |
471 | ||
8d027a04 MK |
472 | /* Note that we must call supply_gregset and supply_fpregset *after* |
473 | calling the td routines because the td routines call ps_lget* | |
474 | which affect the values stored in the registers array. */ | |
c906108c | 475 | |
e71c308d DJ |
476 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
477 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
478 | } |
479 | ||
480 | static void | |
28439f5e PA |
481 | sol_thread_store_registers (struct target_ops *ops, |
482 | struct regcache *regcache, int regnum) | |
c906108c SS |
483 | { |
484 | thread_t thread; | |
485 | td_thrhandle_t thandle; | |
486 | td_err_e val; | |
8d027a04 | 487 | prgregset_t gregset; |
c906108c | 488 | prfpregset_t fpregset; |
c906108c | 489 | |
dfd4cc63 | 490 | if (!ptid_tid_p (inferior_ptid)) |
8d027a04 | 491 | { |
28439f5e PA |
492 | struct target_ops *beneath = find_target_beneath (ops); |
493 | ||
494 | /* It's an LWP; pass the request on to the layer beneath. */ | |
495 | beneath->to_store_registers (beneath, regcache, regnum); | |
c906108c SS |
496 | return; |
497 | } | |
498 | ||
8d027a04 | 499 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
dfd4cc63 | 500 | thread = ptid_get_tid (inferior_ptid); |
c906108c SS |
501 | |
502 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
503 | if (val != TD_OK) | |
8a3fe4f8 | 504 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
505 | td_err_string (val)); |
506 | ||
8d027a04 MK |
507 | if (regnum != -1) |
508 | { | |
509 | /* Not writing all the registers. */ | |
87232496 | 510 | char old_value[MAX_REGISTER_SIZE]; |
6034ae49 | 511 | |
87232496 | 512 | /* Save new register value. */ |
56be3814 | 513 | regcache_raw_collect (regcache, regnum, old_value); |
c906108c | 514 | |
c60c0f5f | 515 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 516 | if (val != TD_OK) |
8a3fe4f8 | 517 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
518 | td_err_string (val)); |
519 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
520 | if (val != TD_OK) | |
8a3fe4f8 | 521 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c SS |
522 | td_err_string (val)); |
523 | ||
87232496 | 524 | /* Restore new register value. */ |
56be3814 | 525 | regcache_raw_supply (regcache, regnum, old_value); |
c906108c SS |
526 | } |
527 | ||
56be3814 UW |
528 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
529 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 530 | |
c60c0f5f | 531 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 532 | if (val != TD_OK) |
8a3fe4f8 | 533 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
534 | td_err_string (val)); |
535 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
536 | if (val != TD_OK) | |
8a3fe4f8 | 537 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c | 538 | td_err_string (val)); |
c906108c SS |
539 | } |
540 | ||
8d027a04 MK |
541 | /* Perform partial transfers on OBJECT. See target_read_partial and |
542 | target_write_partial for details of each variant. One, and only | |
543 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 RM |
544 | |
545 | static LONGEST | |
546 | sol_thread_xfer_partial (struct target_ops *ops, enum target_object object, | |
b6958cfb MK |
547 | const char *annex, gdb_byte *readbuf, |
548 | const gdb_byte *writebuf, | |
549 | ULONGEST offset, LONGEST len) | |
6034ae49 RM |
550 | { |
551 | int retval; | |
552 | struct cleanup *old_chain; | |
28439f5e | 553 | struct target_ops *beneath = find_target_beneath (ops); |
6034ae49 RM |
554 | |
555 | old_chain = save_inferior_ptid (); | |
556 | ||
dfd4cc63 | 557 | if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
558 | { |
559 | /* It's either a thread or an LWP that isn't alive. Any live | |
560 | LWP will do so use the first available. | |
561 | ||
562 | NOTE: We don't need to call switch_to_thread; we're just | |
563 | reading memory. */ | |
564 | inferior_ptid = procfs_first_available (); | |
565 | } | |
6034ae49 | 566 | |
28439f5e PA |
567 | retval = beneath->to_xfer_partial (beneath, object, annex, |
568 | readbuf, writebuf, offset, len); | |
6034ae49 RM |
569 | |
570 | do_cleanups (old_chain); | |
571 | ||
572 | return retval; | |
573 | } | |
574 | ||
c906108c | 575 | static void |
28439f5e | 576 | check_for_thread_db (void) |
c906108c | 577 | { |
28439f5e PA |
578 | td_err_e err; |
579 | ptid_t ptid; | |
c906108c | 580 | |
28439f5e PA |
581 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
582 | if (p_td_ta_new == NULL) | |
583 | return; | |
c906108c | 584 | |
28439f5e PA |
585 | if (sol_thread_active) |
586 | /* Nothing to do. The thread library was already detected and the | |
587 | target vector was already activated. */ | |
588 | return; | |
c906108c | 589 | |
28439f5e PA |
590 | /* Now, initialize libthread_db. This needs to be done after the |
591 | shared libraries are located because it needs information from | |
592 | the user's thread library. */ | |
c906108c | 593 | |
28439f5e PA |
594 | err = p_td_init (); |
595 | if (err != TD_OK) | |
596 | { | |
597 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
598 | return; | |
599 | } | |
c906108c | 600 | |
28439f5e PA |
601 | /* Now attempt to open a connection to the thread library. */ |
602 | err = p_td_ta_new (&main_ph, &main_ta); | |
603 | switch (err) | |
c906108c | 604 | { |
28439f5e PA |
605 | case TD_NOLIBTHREAD: |
606 | /* No thread library was detected. */ | |
607 | break; | |
2689673f | 608 | |
28439f5e PA |
609 | case TD_OK: |
610 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 611 | |
28439f5e | 612 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 613 | push_target (&sol_thread_ops); |
28439f5e | 614 | sol_thread_active = 1; |
c906108c | 615 | |
28439f5e | 616 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f | 617 | ptid = lwp_to_thread (inferior_ptid); |
dfd4cc63 | 618 | if (ptid_get_pid (ptid) != -1) |
28439f5e PA |
619 | inferior_ptid = ptid; |
620 | ||
621 | target_find_new_threads (); | |
622 | break; | |
623 | ||
624 | default: | |
625 | warning (_("Cannot initialize thread debugging library: %s"), | |
626 | td_err_string (err)); | |
627 | break; | |
c906108c SS |
628 | } |
629 | } | |
630 | ||
8d027a04 MK |
631 | /* This routine is called whenever a new symbol table is read in, or |
632 | when all symbol tables are removed. libthread_db can only be | |
633 | initialized when it finds the right variables in libthread.so. | |
634 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 635 | the library gets mapped and the symbol table is read in. */ |
c906108c | 636 | |
06d3b283 | 637 | static void |
fba45db2 | 638 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 639 | { |
28439f5e PA |
640 | if (objfile != NULL) |
641 | check_for_thread_db (); | |
c906108c SS |
642 | } |
643 | ||
644 | /* Clean up after the inferior dies. */ | |
645 | ||
646 | static void | |
136d6dae | 647 | sol_thread_mourn_inferior (struct target_ops *ops) |
c906108c | 648 | { |
28439f5e PA |
649 | struct target_ops *beneath = find_target_beneath (ops); |
650 | ||
2689673f | 651 | sol_thread_active = 0; |
c906108c | 652 | |
28439f5e | 653 | unpush_target (ops); |
c906108c | 654 | |
28439f5e | 655 | beneath->to_mourn_inferior (beneath); |
c906108c SS |
656 | } |
657 | ||
8d027a04 MK |
658 | /* Return true if PTID is still active in the inferior. */ |
659 | ||
c906108c | 660 | static int |
28439f5e | 661 | sol_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 662 | { |
dfd4cc63 | 663 | if (ptid_tid_p (ptid)) |
c906108c | 664 | { |
8d027a04 | 665 | /* It's a (user-level) thread. */ |
c906108c SS |
666 | td_err_e val; |
667 | td_thrhandle_t th; | |
39f77062 | 668 | int pid; |
c906108c | 669 | |
dfd4cc63 | 670 | pid = ptid_get_tid (ptid); |
c906108c | 671 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
8d027a04 | 672 | return 0; /* Thread not found. */ |
c906108c | 673 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
8d027a04 MK |
674 | return 0; /* Thread not valid. */ |
675 | return 1; /* Known thread. */ | |
c906108c | 676 | } |
c5aa993b | 677 | else |
c906108c | 678 | { |
28439f5e PA |
679 | struct target_ops *beneath = find_target_beneath (ops); |
680 | ||
681 | /* It's an LPW; pass the request on to the layer below. */ | |
682 | return beneath->to_thread_alive (beneath, ptid); | |
c906108c SS |
683 | } |
684 | } | |
685 | ||
c906108c | 686 | \f |
8d027a04 MK |
687 | /* These routines implement the lower half of the thread_db interface, |
688 | i.e. the ps_* routines. */ | |
c906108c | 689 | |
8d027a04 MK |
690 | /* Various versions of <proc_service.h> have slightly different |
691 | function prototypes. In particular, we have | |
c906108c | 692 | |
c5aa993b JM |
693 | NEWER OLDER |
694 | struct ps_prochandle * const struct ps_prochandle * | |
695 | void* char* | |
8d027a04 MK |
696 | const void* char* |
697 | int size_t | |
c906108c | 698 | |
8d027a04 MK |
699 | Which one you have depends on the Solaris version and what patches |
700 | you've applied. On the theory that there are only two major | |
701 | variants, we have configure check the prototype of ps_pdwrite (), | |
c378eb4e | 702 | and use that info to make appropriate typedefs here. */ |
c906108c SS |
703 | |
704 | #ifdef PROC_SERVICE_IS_OLD | |
c5aa993b JM |
705 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
706 | typedef char *gdb_ps_read_buf_t; | |
707 | typedef char *gdb_ps_write_buf_t; | |
c906108c | 708 | typedef int gdb_ps_size_t; |
76e1ee85 | 709 | typedef psaddr_t gdb_ps_addr_t; |
c906108c | 710 | #else |
c5aa993b JM |
711 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
712 | typedef void *gdb_ps_read_buf_t; | |
713 | typedef const void *gdb_ps_write_buf_t; | |
c906108c | 714 | typedef size_t gdb_ps_size_t; |
291dcb3e | 715 | typedef psaddr_t gdb_ps_addr_t; |
c906108c SS |
716 | #endif |
717 | ||
8d027a04 MK |
718 | /* The next four routines are called by libthread_db to tell us to |
719 | stop and stop a particular process or lwp. Since GDB ensures that | |
720 | these are all stopped by the time we call anything in thread_db, | |
721 | these routines need to do nothing. */ | |
c906108c | 722 | |
8d027a04 | 723 | /* Process stop. */ |
d4f3574e | 724 | |
c906108c SS |
725 | ps_err_e |
726 | ps_pstop (gdb_ps_prochandle_t ph) | |
727 | { | |
728 | return PS_OK; | |
729 | } | |
730 | ||
8d027a04 | 731 | /* Process continue. */ |
d4f3574e | 732 | |
c906108c SS |
733 | ps_err_e |
734 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
735 | { | |
736 | return PS_OK; | |
737 | } | |
738 | ||
8d027a04 | 739 | /* LWP stop. */ |
d4f3574e | 740 | |
c906108c SS |
741 | ps_err_e |
742 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
743 | { | |
744 | return PS_OK; | |
745 | } | |
746 | ||
8d027a04 | 747 | /* LWP continue. */ |
d4f3574e | 748 | |
c906108c SS |
749 | ps_err_e |
750 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
751 | { | |
752 | return PS_OK; | |
753 | } | |
754 | ||
d4f3574e SS |
755 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
756 | ||
c906108c SS |
757 | ps_err_e |
758 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
8d027a04 | 759 | const char *ld_symbol_name, gdb_ps_addr_t *ld_symbol_addr) |
c906108c SS |
760 | { |
761 | struct minimal_symbol *ms; | |
762 | ||
763 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
c906108c SS |
764 | if (!ms) |
765 | return PS_NOSYM; | |
766 | ||
767 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); | |
c906108c SS |
768 | return PS_OK; |
769 | } | |
770 | ||
771 | /* Common routine for reading and writing memory. */ | |
772 | ||
773 | static ps_err_e | |
291dcb3e | 774 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
019c1128 | 775 | gdb_byte *buf, int size) |
c906108c | 776 | { |
28439f5e | 777 | int ret; |
c906108c SS |
778 | struct cleanup *old_chain; |
779 | ||
39f77062 | 780 | old_chain = save_inferior_ptid (); |
c906108c | 781 | |
dfd4cc63 | 782 | if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
8d027a04 MK |
783 | { |
784 | /* It's either a thread or an LWP that isn't alive. Any live | |
785 | LWP will do so use the first available. | |
786 | ||
787 | NOTE: We don't need to call switch_to_thread; we're just | |
788 | reading memory. */ | |
789 | inferior_ptid = procfs_first_available (); | |
790 | } | |
c906108c | 791 | |
23e04971 MS |
792 | #if defined (__sparcv9) |
793 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
794 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 795 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
796 | addr &= 0xffffffff; |
797 | #endif | |
798 | ||
28439f5e | 799 | if (dowrite) |
0c4f667c | 800 | ret = target_write_memory (addr, (gdb_byte *) buf, size); |
28439f5e | 801 | else |
0c4f667c | 802 | ret = target_read_memory (addr, (gdb_byte *) buf, size); |
c906108c SS |
803 | |
804 | do_cleanups (old_chain); | |
805 | ||
28439f5e | 806 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
807 | } |
808 | ||
d4f3574e SS |
809 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
810 | ||
c906108c | 811 | ps_err_e |
291dcb3e | 812 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
813 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
814 | { | |
815 | return rw_common (0, ph, addr, buf, size); | |
816 | } | |
817 | ||
d4f3574e SS |
818 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
819 | ||
c906108c | 820 | ps_err_e |
291dcb3e | 821 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
822 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
823 | { | |
019c1128 | 824 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
825 | } |
826 | ||
d4f3574e SS |
827 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
828 | ||
c906108c | 829 | ps_err_e |
291dcb3e | 830 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
831 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
832 | { | |
833 | return rw_common (0, ph, addr, buf, size); | |
834 | } | |
835 | ||
d4f3574e SS |
836 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
837 | ||
c906108c | 838 | ps_err_e |
291dcb3e | 839 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
840 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
841 | { | |
019c1128 | 842 | return rw_common (1, ph, addr, (gdb_byte *) buf, size); |
c906108c SS |
843 | } |
844 | ||
8d027a04 | 845 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
846 | |
847 | ps_err_e | |
8d027a04 | 848 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c SS |
849 | { |
850 | struct cleanup *old_chain; | |
594f7785 | 851 | struct regcache *regcache; |
c906108c | 852 | |
39f77062 | 853 | old_chain = save_inferior_ptid (); |
c906108c | 854 | |
dfd4cc63 | 855 | inferior_ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
f5656ead | 856 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c5aa993b | 857 | |
28439f5e | 858 | target_fetch_registers (regcache, -1); |
594f7785 | 859 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c SS |
860 | |
861 | do_cleanups (old_chain); | |
862 | ||
863 | return PS_OK; | |
864 | } | |
865 | ||
8d027a04 | 866 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
867 | |
868 | ps_err_e | |
869 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
870 | const prgregset_t gregset) | |
871 | { | |
872 | struct cleanup *old_chain; | |
594f7785 | 873 | struct regcache *regcache; |
c906108c | 874 | |
39f77062 | 875 | old_chain = save_inferior_ptid (); |
c906108c | 876 | |
dfd4cc63 | 877 | inferior_ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
f5656ead | 878 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c5aa993b | 879 | |
594f7785 | 880 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 881 | target_store_registers (regcache, -1); |
c906108c SS |
882 | |
883 | do_cleanups (old_chain); | |
884 | ||
885 | return PS_OK; | |
886 | } | |
887 | ||
d4f3574e SS |
888 | /* Log a message (sends to gdb_stderr). */ |
889 | ||
c906108c | 890 | void |
8d027a04 | 891 | ps_plog (const char *fmt, ...) |
c906108c SS |
892 | { |
893 | va_list args; | |
894 | ||
895 | va_start (args, fmt); | |
896 | ||
897 | vfprintf_filtered (gdb_stderr, fmt, args); | |
898 | } | |
899 | ||
c1357578 JB |
900 | /* Get size of extra register set. Currently a noop. */ |
901 | ||
902 | ps_err_e | |
903 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
904 | { | |
905 | return PS_OK; | |
906 | } | |
907 | ||
908 | /* Get extra register set. Currently a noop. */ | |
909 | ||
910 | ps_err_e | |
911 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
912 | { | |
913 | return PS_OK; | |
914 | } | |
915 | ||
916 | /* Set extra register set. Currently a noop. */ | |
917 | ||
918 | ps_err_e | |
919 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
920 | { | |
921 | return PS_OK; | |
922 | } | |
923 | ||
8d027a04 | 924 | /* Get floating-point registers for LWP. */ |
c906108c SS |
925 | |
926 | ps_err_e | |
927 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
8d027a04 | 928 | prfpregset_t *fpregset) |
c906108c SS |
929 | { |
930 | struct cleanup *old_chain; | |
594f7785 | 931 | struct regcache *regcache; |
c906108c | 932 | |
39f77062 | 933 | old_chain = save_inferior_ptid (); |
c906108c | 934 | |
dfd4cc63 | 935 | inferior_ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
f5656ead | 936 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c906108c | 937 | |
28439f5e | 938 | target_fetch_registers (regcache, -1); |
594f7785 | 939 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c SS |
940 | |
941 | do_cleanups (old_chain); | |
942 | ||
943 | return PS_OK; | |
944 | } | |
945 | ||
c378eb4e | 946 | /* Set floating-point regs for LWP. */ |
c906108c SS |
947 | |
948 | ps_err_e | |
949 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
c5aa993b | 950 | const prfpregset_t * fpregset) |
c906108c SS |
951 | { |
952 | struct cleanup *old_chain; | |
594f7785 | 953 | struct regcache *regcache; |
c906108c | 954 | |
39f77062 | 955 | old_chain = save_inferior_ptid (); |
c906108c | 956 | |
dfd4cc63 | 957 | inferior_ptid = ptid_build (ptid_get_pid (inferior_ptid), lwpid, 0); |
f5656ead | 958 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
c5aa993b | 959 | |
594f7785 | 960 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 961 | target_store_registers (regcache, -1); |
c906108c SS |
962 | |
963 | do_cleanups (old_chain); | |
964 | ||
965 | return PS_OK; | |
966 | } | |
967 | ||
23715f29 | 968 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
969 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
970 | BFD to do this. There might be a more Solaris-specific | |
971 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
972 | |
973 | ps_err_e | |
974 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) | |
975 | { | |
976 | if (exec_bfd == 0) | |
a95ac8b6 PS |
977 | *data_model = PR_MODEL_UNKNOWN; |
978 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
979 | *data_model = PR_MODEL_ILP32; |
980 | else | |
981 | *data_model = PR_MODEL_LP64; | |
982 | ||
983 | return PS_OK; | |
984 | } | |
23715f29 | 985 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 986 | |
965b60ee | 987 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 988 | |
965b60ee JB |
989 | /* Reads the local descriptor table of a LWP. |
990 | ||
991 | This function is necessary on x86-solaris only. Without it, the loading | |
992 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 993 | |
c906108c SS |
994 | ps_err_e |
995 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
996 | struct ssd *pldt) | |
997 | { | |
8d027a04 | 998 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
05e28a7b | 999 | struct ssd *ret; |
c906108c | 1000 | |
8d027a04 MK |
1001 | /* FIXME: can't I get the process ID from the prochandle or |
1002 | something? */ | |
2f09097b | 1003 | |
dfd4cc63 | 1004 | if (ptid_get_pid (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
1005 | return PS_BADLID; |
1006 | ||
dfd4cc63 LM |
1007 | ret = procfs_find_LDT_entry (ptid_build (ptid_get_pid (inferior_ptid), |
1008 | lwpid, 0)); | |
05e28a7b | 1009 | if (ret) |
c906108c | 1010 | { |
05e28a7b AC |
1011 | memcpy (pldt, ret, sizeof (struct ssd)); |
1012 | return PS_OK; | |
c906108c | 1013 | } |
8d027a04 MK |
1014 | else |
1015 | /* LDT not found. */ | |
c906108c | 1016 | return PS_ERR; |
c5aa993b | 1017 | } |
965b60ee | 1018 | #endif |
c906108c | 1019 | \f |
8d027a04 MK |
1020 | |
1021 | /* Convert PTID to printable form. */ | |
c906108c | 1022 | |
02f1df11 | 1023 | static char * |
117de6a9 | 1024 | solaris_pid_to_str (struct target_ops *ops, ptid_t ptid) |
c906108c SS |
1025 | { |
1026 | static char buf[100]; | |
1027 | ||
dfd4cc63 | 1028 | if (ptid_tid_p (ptid)) |
c906108c | 1029 | { |
39f77062 | 1030 | ptid_t lwp; |
c906108c | 1031 | |
39f77062 | 1032 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1033 | |
dfd4cc63 | 1034 | if (ptid_get_pid (lwp) == -1) |
8c042590 | 1035 | xsnprintf (buf, sizeof (buf), "Thread %ld (defunct)", |
dfd4cc63 LM |
1036 | ptid_get_tid (ptid)); |
1037 | else if (ptid_get_pid (lwp) != -2) | |
8c042590 | 1038 | xsnprintf (buf, sizeof (buf), "Thread %ld (LWP %ld)", |
dfd4cc63 | 1039 | ptid_get_tid (ptid), ptid_get_lwp (lwp)); |
c906108c | 1040 | else |
dfd4cc63 LM |
1041 | xsnprintf (buf, sizeof (buf), "Thread %ld ", |
1042 | ptid_get_tid (ptid)); | |
c906108c | 1043 | } |
dfd4cc63 LM |
1044 | else if (ptid_get_lwp (ptid) != 0) |
1045 | xsnprintf (buf, sizeof (buf), "LWP %ld ", ptid_get_lwp (ptid)); | |
c906108c | 1046 | else |
dfd4cc63 | 1047 | xsnprintf (buf, sizeof (buf), "process %d ", ptid_get_pid (ptid)); |
c906108c SS |
1048 | |
1049 | return buf; | |
1050 | } | |
1051 | \f | |
1052 | ||
8d027a04 MK |
1053 | /* Worker bee for find_new_threads. Callback function that gets |
1054 | called once per user-level thread (i.e. not for LWP's). */ | |
c906108c SS |
1055 | |
1056 | static int | |
fba45db2 | 1057 | sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1058 | { |
1059 | td_err_e retval; | |
1060 | td_thrinfo_t ti; | |
39f77062 | 1061 | ptid_t ptid; |
c906108c | 1062 | |
8d027a04 MK |
1063 | retval = p_td_thr_get_info (th, &ti); |
1064 | if (retval != TD_OK) | |
1065 | return -1; | |
1066 | ||
dfd4cc63 | 1067 | ptid = ptid_build (ptid_get_pid (inferior_ptid), 0, ti.ti_tid); |
2689673f | 1068 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1069 | add_thread (ptid); |
c906108c SS |
1070 | |
1071 | return 0; | |
1072 | } | |
1073 | ||
d4f3574e | 1074 | static void |
28439f5e | 1075 | sol_find_new_threads (struct target_ops *ops) |
c906108c | 1076 | { |
28439f5e | 1077 | struct target_ops *beneath = find_target_beneath (ops); |
8d027a04 MK |
1078 | |
1079 | /* First Find any new LWP's. */ | |
28439f5e PA |
1080 | if (beneath->to_find_new_threads != NULL) |
1081 | beneath->to_find_new_threads (beneath); | |
8d027a04 MK |
1082 | |
1083 | /* Then find any new user-level threads. */ | |
c5aa993b | 1084 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
c906108c SS |
1085 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1086 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1087 | } | |
1088 | ||
8d027a04 MK |
1089 | /* Worker bee for the "info sol-thread" command. This is a callback |
1090 | function that gets called once for each Solaris user-level thread | |
1091 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1092 | that we can think of. */ | |
c906108c | 1093 | |
c5aa993b | 1094 | static int |
fba45db2 | 1095 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1096 | { |
1097 | td_err_e ret; | |
1098 | td_thrinfo_t ti; | |
c906108c | 1099 | |
8d027a04 MK |
1100 | ret = p_td_thr_get_info (th, &ti); |
1101 | if (ret == TD_OK) | |
c906108c | 1102 | { |
c5aa993b JM |
1103 | printf_filtered ("%s thread #%d, lwp %d, ", |
1104 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1105 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1106 | switch (ti.ti_state) |
1107 | { | |
c906108c | 1108 | default: |
c5aa993b JM |
1109 | case TD_THR_UNKNOWN: |
1110 | printf_filtered ("<unknown state>"); | |
1111 | break; | |
1112 | case TD_THR_STOPPED: | |
1113 | printf_filtered ("(stopped)"); | |
1114 | break; | |
1115 | case TD_THR_RUN: | |
1116 | printf_filtered ("(run) "); | |
1117 | break; | |
1118 | case TD_THR_ACTIVE: | |
1119 | printf_filtered ("(active) "); | |
1120 | break; | |
1121 | case TD_THR_ZOMBIE: | |
1122 | printf_filtered ("(zombie) "); | |
1123 | break; | |
1124 | case TD_THR_SLEEP: | |
1125 | printf_filtered ("(asleep) "); | |
1126 | break; | |
1127 | case TD_THR_STOPPED_ASLEEP: | |
1128 | printf_filtered ("(stopped asleep)"); | |
1129 | break; | |
1130 | } | |
8d027a04 | 1131 | /* Print thr_create start function. */ |
c906108c | 1132 | if (ti.ti_startfunc != 0) |
4ce44c66 | 1133 | { |
5812197c JB |
1134 | const struct bound_minimal_symbol msym |
1135 | = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1136 | ||
17e760ae JB |
1137 | printf_filtered (" startfunc=%s", |
1138 | msym.minsym | |
1139 | ? SYMBOL_PRINT_NAME (msym.minsym) | |
1140 | : paddress (target_gdbarch (), ti.ti_startfunc)); | |
4ce44c66 | 1141 | } |
c906108c | 1142 | |
8d027a04 | 1143 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1144 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 | 1145 | { |
5812197c JB |
1146 | const struct bound_minimal_symbol msym |
1147 | = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1148 | ||
17e760ae JB |
1149 | printf_filtered (" sleepfunc=%s", |
1150 | msym.minsym | |
1151 | ? SYMBOL_PRINT_NAME (msym.minsym) | |
1152 | : paddress (target_gdbarch (), ti.ti_pc)); | |
4ce44c66 | 1153 | } |
c906108c | 1154 | |
c0f5f490 | 1155 | printf_filtered ("\n"); |
c906108c SS |
1156 | } |
1157 | else | |
8a3fe4f8 | 1158 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1159 | |
c5aa993b | 1160 | return 0; |
c906108c SS |
1161 | } |
1162 | ||
8d027a04 MK |
1163 | /* List some state about each Solaris user-level thread in the |
1164 | inferior. */ | |
c906108c SS |
1165 | |
1166 | static void | |
fba45db2 | 1167 | info_solthreads (char *args, int from_tty) |
c906108c | 1168 | { |
c5aa993b | 1169 | p_td_ta_thr_iter (main_ta, info_cb, args, |
c906108c SS |
1170 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1171 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1172 | } | |
c906108c | 1173 | |
3caf13b4 JB |
1174 | /* Callback routine used to find a thread based on the TID part of |
1175 | its PTID. */ | |
1176 | ||
1177 | static int | |
1178 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1179 | { | |
1180 | long *tid = (long *) data; | |
1181 | ||
1182 | if (ptid_get_tid (thread->ptid) == *tid) | |
1183 | return 1; | |
1184 | ||
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | static ptid_t | |
1189 | sol_get_ada_task_ptid (long lwp, long thread) | |
1190 | { | |
1191 | struct thread_info *thread_info = | |
1192 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1193 | ||
1194 | if (thread_info == NULL) | |
1195 | { | |
1196 | /* The list of threads is probably not up to date. Find any | |
1197 | thread that is missing from the list, and try again. */ | |
1198 | sol_find_new_threads (¤t_target); | |
1199 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, | |
1200 | &thread); | |
1201 | } | |
1202 | ||
1203 | gdb_assert (thread_info != NULL); | |
1204 | ||
1205 | return (thread_info->ptid); | |
1206 | } | |
1207 | ||
c906108c | 1208 | static void |
fba45db2 | 1209 | init_sol_thread_ops (void) |
c906108c SS |
1210 | { |
1211 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1212 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1213 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
c906108c SS |
1214 | sol_thread_ops.to_detach = sol_thread_detach; |
1215 | sol_thread_ops.to_resume = sol_thread_resume; | |
1216 | sol_thread_ops.to_wait = sol_thread_wait; | |
1217 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1218 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
6034ae49 | 1219 | sol_thread_ops.to_xfer_partial = sol_thread_xfer_partial; |
c906108c | 1220 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
c906108c | 1221 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
ed9a39eb | 1222 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
b83266a0 | 1223 | sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
28439f5e | 1224 | sol_thread_ops.to_stratum = thread_stratum; |
3caf13b4 | 1225 | sol_thread_ops.to_get_ada_task_ptid = sol_get_ada_task_ptid; |
c906108c SS |
1226 | sol_thread_ops.to_magic = OPS_MAGIC; |
1227 | } | |
1228 | ||
02f1df11 JB |
1229 | /* Silence -Wmissing-prototypes. */ |
1230 | extern void _initialize_sol_thread (void); | |
1231 | ||
c906108c | 1232 | void |
fba45db2 | 1233 | _initialize_sol_thread (void) |
c906108c SS |
1234 | { |
1235 | void *dlhandle; | |
1236 | ||
1237 | init_sol_thread_ops (); | |
c906108c SS |
1238 | |
1239 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1240 | if (!dlhandle) | |
1241 | goto die; | |
1242 | ||
1243 | #define resolve(X) \ | |
1244 | if (!(p_##X = dlsym (dlhandle, #X))) \ | |
1245 | goto die; | |
1246 | ||
1247 | resolve (td_log); | |
1248 | resolve (td_ta_new); | |
1249 | resolve (td_ta_delete); | |
1250 | resolve (td_init); | |
1251 | resolve (td_ta_get_ph); | |
1252 | resolve (td_ta_get_nthreads); | |
1253 | resolve (td_ta_tsd_iter); | |
1254 | resolve (td_ta_thr_iter); | |
1255 | resolve (td_thr_validate); | |
1256 | resolve (td_thr_tsd); | |
1257 | resolve (td_thr_get_info); | |
1258 | resolve (td_thr_getfpregs); | |
1259 | resolve (td_thr_getxregsize); | |
1260 | resolve (td_thr_getxregs); | |
1261 | resolve (td_thr_sigsetmask); | |
1262 | resolve (td_thr_setprio); | |
1263 | resolve (td_thr_setsigpending); | |
1264 | resolve (td_thr_setfpregs); | |
1265 | resolve (td_thr_setxregs); | |
1266 | resolve (td_ta_map_id2thr); | |
1267 | resolve (td_ta_map_lwp2thr); | |
1268 | resolve (td_thr_getgregs); | |
1269 | resolve (td_thr_setgregs); | |
1270 | ||
12070676 | 1271 | complete_target_initialization (&sol_thread_ops); |
c906108c | 1272 | |
c5aa993b | 1273 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1274 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1275 | |
8d027a04 | 1276 | /* Hook into new_objfile notification. */ |
06d3b283 | 1277 | observer_attach_new_objfile (sol_thread_new_objfile); |
c906108c SS |
1278 | return; |
1279 | ||
8d027a04 MK |
1280 | die: |
1281 | fprintf_unfiltered (gdb_stderr, "\ | |
1282 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1283 | |
1284 | if (dlhandle) | |
1285 | dlclose (dlhandle); | |
1286 | ||
c906108c SS |
1287 | return; |
1288 | } |