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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
0b302171 | 3 | Copyright (C) 1996-2005, 2007-2012 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> | |
b8a92b82 | 59 | #include "gdb_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" |
6f4492c8 | 67 | #include "gdb_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 | |
ca6724c1 KB |
99 | #define GET_PID(ptid) ptid_get_pid (ptid) |
100 | #define GET_LWP(ptid) ptid_get_lwp (ptid) | |
101 | #define GET_THREAD(ptid) ptid_get_tid (ptid) | |
102 | ||
103 | #define is_lwp(ptid) (GET_LWP (ptid) != 0) | |
104 | #define is_thread(ptid) (GET_THREAD (ptid) != 0) | |
105 | ||
106 | #define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) | |
107 | #define BUILD_THREAD(tid, pid) ptid_build (pid, 0, tid) | |
c906108c | 108 | |
8d027a04 MK |
109 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
110 | ||
111 | static void (*p_td_log)(const int on_off); | |
112 | static td_err_e (*p_td_ta_new)(const struct ps_prochandle *ph_p, | |
113 | td_thragent_t **ta_pp); | |
114 | static td_err_e (*p_td_ta_delete)(td_thragent_t *ta_p); | |
115 | static td_err_e (*p_td_init)(void); | |
116 | static td_err_e (*p_td_ta_get_ph)(const td_thragent_t *ta_p, | |
117 | struct ps_prochandle **ph_pp); | |
118 | static td_err_e (*p_td_ta_get_nthreads)(const td_thragent_t *ta_p, | |
119 | int *nthread_p); | |
120 | static td_err_e (*p_td_ta_tsd_iter)(const td_thragent_t *ta_p, | |
121 | td_key_iter_f *cb, void *cbdata_p); | |
122 | static td_err_e (*p_td_ta_thr_iter)(const td_thragent_t *ta_p, | |
123 | td_thr_iter_f *cb, void *cbdata_p, | |
124 | td_thr_state_e state, int ti_pri, | |
125 | sigset_t *ti_sigmask_p, | |
126 | unsigned ti_user_flags); | |
127 | static td_err_e (*p_td_thr_validate)(const td_thrhandle_t *th_p); | |
128 | static td_err_e (*p_td_thr_tsd)(const td_thrhandle_t * th_p, | |
129 | const thread_key_t key, void **data_pp); | |
130 | static td_err_e (*p_td_thr_get_info)(const td_thrhandle_t *th_p, | |
131 | td_thrinfo_t *ti_p); | |
132 | static td_err_e (*p_td_thr_getfpregs)(const td_thrhandle_t *th_p, | |
133 | prfpregset_t *fpregset); | |
134 | static td_err_e (*p_td_thr_getxregsize)(const td_thrhandle_t *th_p, | |
135 | int *xregsize); | |
136 | static td_err_e (*p_td_thr_getxregs)(const td_thrhandle_t *th_p, | |
137 | const caddr_t xregset); | |
138 | static td_err_e (*p_td_thr_sigsetmask)(const td_thrhandle_t *th_p, | |
139 | const sigset_t ti_sigmask); | |
140 | static td_err_e (*p_td_thr_setprio)(const td_thrhandle_t *th_p, | |
141 | const int ti_pri); | |
142 | static td_err_e (*p_td_thr_setsigpending)(const td_thrhandle_t *th_p, | |
143 | const uchar_t ti_pending_flag, | |
144 | const sigset_t ti_pending); | |
145 | static td_err_e (*p_td_thr_setfpregs)(const td_thrhandle_t *th_p, | |
146 | const prfpregset_t *fpregset); | |
147 | static td_err_e (*p_td_thr_setxregs)(const td_thrhandle_t *th_p, | |
148 | const caddr_t xregset); | |
149 | static td_err_e (*p_td_ta_map_id2thr)(const td_thragent_t *ta_p, | |
150 | thread_t tid, | |
151 | td_thrhandle_t *th_p); | |
152 | static td_err_e (*p_td_ta_map_lwp2thr)(const td_thragent_t *ta_p, | |
153 | lwpid_t lwpid, | |
154 | td_thrhandle_t *th_p); | |
155 | static td_err_e (*p_td_thr_getgregs)(const td_thrhandle_t *th_p, | |
156 | prgregset_t regset); | |
157 | static td_err_e (*p_td_thr_setgregs)(const td_thrhandle_t *th_p, | |
158 | const prgregset_t regset); | |
159 | \f | |
c906108c | 160 | |
8d027a04 MK |
161 | /* Return the libthread_db error string associated with ERRCODE. If |
162 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c SS |
163 | |
164 | static char * | |
fba45db2 | 165 | td_err_string (td_err_e errcode) |
c906108c | 166 | { |
8d027a04 | 167 | static struct string_map td_err_table[] = |
c5aa993b | 168 | { |
8d027a04 MK |
169 | { TD_OK, "generic \"call succeeded\"" }, |
170 | { TD_ERR, "generic error." }, | |
171 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
172 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
173 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
174 | { TD_BADPH, "invalid process handle" }, | |
175 | { TD_BADTH, "invalid thread handle" }, | |
176 | { TD_BADSH, "invalid synchronization handle" }, | |
177 | { TD_BADTA, "invalid thread agent" }, | |
178 | { TD_BADKEY, "invalid key" }, | |
179 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
180 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
181 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
182 | { TD_NOEVENT, "requested event is not supported" }, | |
183 | { TD_NOCAPAB, "capability not available" }, | |
184 | { TD_DBERR, "Debugger service failed" }, | |
185 | { TD_NOAPLIC, "Operation not applicable to" }, | |
186 | { TD_NOTSD, "No thread specific data for this thread" }, | |
187 | { TD_MALLOC, "Malloc failed" }, | |
188 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
189 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 190 | }; |
c906108c SS |
191 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
192 | int i; | |
193 | static char buf[50]; | |
194 | ||
195 | for (i = 0; i < td_err_size; i++) | |
196 | if (td_err_table[i].num == errcode) | |
197 | return td_err_table[i].str; | |
c5aa993b | 198 | |
8d027a04 | 199 | sprintf (buf, "Unknown libthread_db error code: %d", errcode); |
c906108c SS |
200 | |
201 | return buf; | |
202 | } | |
c906108c | 203 | |
b021a221 | 204 | /* Return the libthread_db state string assicoated with STATECODE. |
8d027a04 | 205 | If STATECODE is unknown, return an appropriate message. */ |
c906108c SS |
206 | |
207 | static char * | |
fba45db2 | 208 | td_state_string (td_thr_state_e statecode) |
c906108c | 209 | { |
8d027a04 | 210 | static struct string_map td_thr_state_table[] = |
c5aa993b | 211 | { |
8d027a04 MK |
212 | { TD_THR_ANY_STATE, "any state" }, |
213 | { TD_THR_UNKNOWN, "unknown" }, | |
214 | { TD_THR_STOPPED, "stopped" }, | |
215 | { TD_THR_RUN, "run" }, | |
216 | { TD_THR_ACTIVE, "active" }, | |
217 | { TD_THR_ZOMBIE, "zombie" }, | |
218 | { TD_THR_SLEEP, "sleep" }, | |
219 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 220 | }; |
8d027a04 MK |
221 | const int td_thr_state_table_size = |
222 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
223 | int i; |
224 | static char buf[50]; | |
225 | ||
226 | for (i = 0; i < td_thr_state_table_size; i++) | |
227 | if (td_thr_state_table[i].num == statecode) | |
228 | return td_thr_state_table[i].str; | |
c5aa993b | 229 | |
8d027a04 | 230 | sprintf (buf, "Unknown libthread_db state code: %d", statecode); |
c906108c SS |
231 | |
232 | return buf; | |
233 | } | |
234 | \f | |
c906108c | 235 | |
8d027a04 MK |
236 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
237 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 238 | DEFAULT_LWP. |
c906108c | 239 | |
8d027a04 | 240 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 241 | |
39f77062 KB |
242 | static ptid_t |
243 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
244 | { |
245 | td_thrinfo_t ti; | |
246 | td_thrhandle_t th; | |
247 | td_err_e val; | |
248 | ||
249 | if (is_lwp (thread_id)) | |
8d027a04 | 250 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 251 | |
8d027a04 | 252 | /* It's a thread. Convert to LWP. */ |
c906108c SS |
253 | |
254 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); | |
255 | if (val == TD_NOTHR) | |
8d027a04 | 256 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 257 | else if (val != TD_OK) |
8a3fe4f8 | 258 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
259 | |
260 | val = p_td_thr_get_info (&th, &ti); | |
261 | if (val == TD_NOTHR) | |
8d027a04 | 262 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 263 | else if (val != TD_OK) |
8a3fe4f8 | 264 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
265 | |
266 | if (ti.ti_state != TD_THR_ACTIVE) | |
267 | { | |
268 | if (default_lwp != -1) | |
39f77062 | 269 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 270 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
271 | td_state_string (ti.ti_state)); |
272 | } | |
273 | ||
274 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); | |
275 | } | |
c906108c | 276 | |
8d027a04 MK |
277 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
278 | doesn't exists, that's an error. | |
c906108c | 279 | |
8d027a04 | 280 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 281 | |
39f77062 KB |
282 | static ptid_t |
283 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
284 | { |
285 | td_thrinfo_t ti; | |
286 | td_thrhandle_t th; | |
287 | td_err_e val; | |
288 | ||
289 | if (is_thread (lwp)) | |
8d027a04 | 290 | return lwp; /* It's already a thread ID. */ |
c906108c | 291 | |
8d027a04 | 292 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 293 | |
28439f5e | 294 | if (!target_thread_alive (lwp)) |
8d027a04 | 295 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c SS |
296 | |
297 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); | |
298 | if (val == TD_NOTHR) | |
8d027a04 | 299 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 300 | else if (val != TD_OK) |
8a3fe4f8 | 301 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
302 | |
303 | val = p_td_thr_validate (&th); | |
304 | if (val == TD_NOTHR) | |
8d027a04 | 305 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 306 | else if (val != TD_OK) |
8a3fe4f8 | 307 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
308 | |
309 | val = p_td_thr_get_info (&th, &ti); | |
310 | if (val == TD_NOTHR) | |
8d027a04 | 311 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 312 | else if (val != TD_OK) |
8a3fe4f8 | 313 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c SS |
314 | |
315 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); | |
316 | } | |
317 | \f | |
c906108c | 318 | |
8d027a04 | 319 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
320 | through to the layer beneath, as they don't need to do anything |
321 | specific for threads. */ | |
c906108c | 322 | |
8d027a04 MK |
323 | /* Take a program previously attached to and detaches it. The program |
324 | resumes execution and will no longer stop on signals, etc. We'd | |
325 | better not have left any breakpoints in the program or it'll die | |
326 | when it hits one. For this to work, it may be necessary for the | |
327 | process to have been previously attached. It *might* work if the | |
328 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
329 | |
330 | static void | |
136d6dae | 331 | sol_thread_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c | 332 | { |
28439f5e PA |
333 | struct target_ops *beneath = find_target_beneath (ops); |
334 | ||
2689673f | 335 | sol_thread_active = 0; |
39f77062 | 336 | inferior_ptid = pid_to_ptid (PIDGET (main_ph.ptid)); |
28439f5e PA |
337 | unpush_target (ops); |
338 | beneath->to_detach (beneath, args, from_tty); | |
c906108c SS |
339 | } |
340 | ||
8d027a04 MK |
341 | /* Resume execution of process PTID. If STEP is nozero, then just |
342 | single step it. If SIGNAL is nonzero, restart it with that signal | |
343 | activated. We may have to convert PTID from a thread ID to an LWP | |
344 | ID for procfs. */ | |
c906108c SS |
345 | |
346 | static void | |
28439f5e PA |
347 | sol_thread_resume (struct target_ops *ops, |
348 | ptid_t ptid, int step, enum target_signal signo) | |
c906108c SS |
349 | { |
350 | struct cleanup *old_chain; | |
28439f5e | 351 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c | 352 | |
39f77062 | 353 | old_chain = save_inferior_ptid (); |
c906108c | 354 | |
39f77062 KB |
355 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
356 | if (PIDGET (inferior_ptid) == -1) | |
357 | inferior_ptid = procfs_first_available (); | |
c906108c | 358 | |
39f77062 | 359 | if (PIDGET (ptid) != -1) |
c906108c | 360 | { |
39f77062 | 361 | ptid_t save_ptid = ptid; |
c906108c | 362 | |
39f77062 | 363 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 364 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 365 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 366 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 367 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 368 | GET_THREAD (save_ptid)); |
c906108c SS |
369 | } |
370 | ||
28439f5e | 371 | beneath->to_resume (beneath, ptid, step, signo); |
c906108c SS |
372 | |
373 | do_cleanups (old_chain); | |
374 | } | |
375 | ||
2689673f | 376 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 377 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 378 | |
39f77062 | 379 | static ptid_t |
117de6a9 | 380 | sol_thread_wait (struct target_ops *ops, |
47608cb1 | 381 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
c906108c | 382 | { |
39f77062 KB |
383 | ptid_t rtnval; |
384 | ptid_t save_ptid; | |
28439f5e | 385 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c SS |
386 | struct cleanup *old_chain; |
387 | ||
39f77062 KB |
388 | save_ptid = inferior_ptid; |
389 | old_chain = save_inferior_ptid (); | |
c906108c | 390 | |
39f77062 KB |
391 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
392 | if (PIDGET (inferior_ptid) == -1) | |
393 | inferior_ptid = procfs_first_available (); | |
c906108c | 394 | |
39f77062 | 395 | if (PIDGET (ptid) != -1) |
c906108c | 396 | { |
39f77062 | 397 | ptid_t save_ptid = ptid; |
c906108c | 398 | |
39f77062 | 399 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 400 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 401 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 402 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 403 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 404 | GET_THREAD (save_ptid)); |
c906108c SS |
405 | } |
406 | ||
47608cb1 | 407 | rtnval = beneath->to_wait (beneath, ptid, ourstatus, options); |
c906108c SS |
408 | |
409 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
410 | { | |
8d027a04 | 411 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 412 | rtnval = lwp_to_thread (rtnval); |
39f77062 KB |
413 | if (PIDGET (rtnval) == -1) |
414 | rtnval = save_ptid; | |
c906108c | 415 | |
8d027a04 | 416 | /* See if we have a new thread. */ |
c906108c | 417 | if (is_thread (rtnval) |
39f77062 | 418 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
419 | && (!in_thread_list (rtnval) |
420 | || is_exited (rtnval))) | |
93815fbf | 421 | add_thread (rtnval); |
c906108c SS |
422 | } |
423 | ||
8d027a04 MK |
424 | /* During process initialization, we may get here without the thread |
425 | package being initialized, since that can only happen after we've | |
426 | found the shared libs. */ | |
c906108c SS |
427 | |
428 | do_cleanups (old_chain); | |
429 | ||
430 | return rtnval; | |
431 | } | |
432 | ||
433 | static void | |
28439f5e PA |
434 | sol_thread_fetch_registers (struct target_ops *ops, |
435 | struct regcache *regcache, int regnum) | |
c906108c SS |
436 | { |
437 | thread_t thread; | |
438 | td_thrhandle_t thandle; | |
439 | td_err_e val; | |
440 | prgregset_t gregset; | |
441 | prfpregset_t fpregset; | |
e71c308d DJ |
442 | gdb_gregset_t *gregset_p = &gregset; |
443 | gdb_fpregset_t *fpregset_p = &fpregset; | |
28439f5e | 444 | struct target_ops *beneath = find_target_beneath (ops); |
e71c308d | 445 | |
c906108c SS |
446 | #if 0 |
447 | int xregsize; | |
448 | caddr_t xregset; | |
449 | #endif | |
450 | ||
39f77062 | 451 | if (!is_thread (inferior_ptid)) |
8d027a04 | 452 | { |
28439f5e PA |
453 | /* It's an LWP; pass the request on to the layer beneath. */ |
454 | beneath->to_fetch_registers (beneath, regcache, regnum); | |
c906108c SS |
455 | return; |
456 | } | |
457 | ||
8d027a04 | 458 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 459 | thread = GET_THREAD (inferior_ptid); |
c906108c | 460 | if (thread == 0) |
8a3fe4f8 | 461 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
462 | |
463 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
464 | if (val != TD_OK) | |
8a3fe4f8 | 465 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
466 | td_err_string (val)); |
467 | ||
8d027a04 | 468 | /* Get the general-purpose registers. */ |
c906108c SS |
469 | |
470 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 471 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 472 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
473 | td_err_string (val)); |
474 | ||
8d027a04 MK |
475 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
476 | and %sp are saved (by a thread context switch). */ | |
c906108c | 477 | |
8d027a04 | 478 | /* And, now the floating-point registers. */ |
c906108c SS |
479 | |
480 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 481 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 482 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
483 | td_err_string (val)); |
484 | ||
8d027a04 MK |
485 | /* Note that we must call supply_gregset and supply_fpregset *after* |
486 | calling the td routines because the td routines call ps_lget* | |
487 | which affect the values stored in the registers array. */ | |
c906108c | 488 | |
e71c308d DJ |
489 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
490 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
491 | |
492 | #if 0 | |
8d027a04 | 493 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
494 | val = td_thr_getxregsize (&thandle, &xregsize); |
495 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 496 | error (_("sol_thread_fetch_registers: td_thr_getxregsize %s"), |
c906108c SS |
497 | td_err_string (val)); |
498 | ||
499 | if (val == TD_OK) | |
500 | { | |
501 | xregset = alloca (xregsize); | |
502 | val = td_thr_getxregs (&thandle, xregset); | |
503 | if (val != TD_OK) | |
8a3fe4f8 | 504 | error (_("sol_thread_fetch_registers: td_thr_getxregs %s"), |
c906108c SS |
505 | td_err_string (val)); |
506 | } | |
507 | #endif | |
508 | } | |
509 | ||
510 | static void | |
28439f5e PA |
511 | sol_thread_store_registers (struct target_ops *ops, |
512 | struct regcache *regcache, int regnum) | |
c906108c SS |
513 | { |
514 | thread_t thread; | |
515 | td_thrhandle_t thandle; | |
516 | td_err_e val; | |
8d027a04 | 517 | prgregset_t gregset; |
c906108c SS |
518 | prfpregset_t fpregset; |
519 | #if 0 | |
520 | int xregsize; | |
521 | caddr_t xregset; | |
522 | #endif | |
523 | ||
39f77062 | 524 | if (!is_thread (inferior_ptid)) |
8d027a04 | 525 | { |
28439f5e PA |
526 | struct target_ops *beneath = find_target_beneath (ops); |
527 | ||
528 | /* It's an LWP; pass the request on to the layer beneath. */ | |
529 | beneath->to_store_registers (beneath, regcache, regnum); | |
c906108c SS |
530 | return; |
531 | } | |
532 | ||
8d027a04 | 533 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 534 | thread = GET_THREAD (inferior_ptid); |
c906108c SS |
535 | |
536 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
537 | if (val != TD_OK) | |
8a3fe4f8 | 538 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
539 | td_err_string (val)); |
540 | ||
8d027a04 MK |
541 | if (regnum != -1) |
542 | { | |
543 | /* Not writing all the registers. */ | |
87232496 | 544 | char old_value[MAX_REGISTER_SIZE]; |
6034ae49 | 545 | |
87232496 | 546 | /* Save new register value. */ |
56be3814 | 547 | regcache_raw_collect (regcache, regnum, old_value); |
c906108c | 548 | |
c60c0f5f | 549 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 550 | if (val != TD_OK) |
8a3fe4f8 | 551 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
552 | td_err_string (val)); |
553 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
554 | if (val != TD_OK) | |
8a3fe4f8 | 555 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c SS |
556 | td_err_string (val)); |
557 | ||
87232496 | 558 | /* Restore new register value. */ |
56be3814 | 559 | regcache_raw_supply (regcache, regnum, old_value); |
c906108c SS |
560 | |
561 | #if 0 | |
8d027a04 | 562 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
563 | val = td_thr_getxregsize (&thandle, &xregsize); |
564 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 565 | error (_("sol_thread_store_registers: td_thr_getxregsize %s"), |
c906108c SS |
566 | td_err_string (val)); |
567 | ||
568 | if (val == TD_OK) | |
569 | { | |
570 | xregset = alloca (xregsize); | |
571 | val = td_thr_getxregs (&thandle, xregset); | |
572 | if (val != TD_OK) | |
8a3fe4f8 | 573 | error (_("sol_thread_store_registers: td_thr_getxregs %s"), |
c906108c SS |
574 | td_err_string (val)); |
575 | } | |
576 | #endif | |
577 | } | |
578 | ||
56be3814 UW |
579 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
580 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 581 | |
c60c0f5f | 582 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 583 | if (val != TD_OK) |
8a3fe4f8 | 584 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
585 | td_err_string (val)); |
586 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
587 | if (val != TD_OK) | |
8a3fe4f8 | 588 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c SS |
589 | td_err_string (val)); |
590 | ||
591 | #if 0 | |
8d027a04 | 592 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
593 | val = td_thr_getxregsize (&thandle, &xregsize); |
594 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 595 | error (_("sol_thread_store_registers: td_thr_getxregsize %s"), |
c906108c SS |
596 | td_err_string (val)); |
597 | ||
8d027a04 MK |
598 | /* ??? Should probably do something about writing the xregs here, |
599 | but what are they? */ | |
c906108c SS |
600 | #endif |
601 | } | |
602 | ||
8d027a04 MK |
603 | /* Perform partial transfers on OBJECT. See target_read_partial and |
604 | target_write_partial for details of each variant. One, and only | |
605 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 RM |
606 | |
607 | static LONGEST | |
608 | sol_thread_xfer_partial (struct target_ops *ops, enum target_object object, | |
b6958cfb MK |
609 | const char *annex, gdb_byte *readbuf, |
610 | const gdb_byte *writebuf, | |
611 | ULONGEST offset, LONGEST len) | |
6034ae49 RM |
612 | { |
613 | int retval; | |
614 | struct cleanup *old_chain; | |
28439f5e | 615 | struct target_ops *beneath = find_target_beneath (ops); |
6034ae49 RM |
616 | |
617 | old_chain = save_inferior_ptid (); | |
618 | ||
8d027a04 MK |
619 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
620 | { | |
621 | /* It's either a thread or an LWP that isn't alive. Any live | |
622 | LWP will do so use the first available. | |
623 | ||
624 | NOTE: We don't need to call switch_to_thread; we're just | |
625 | reading memory. */ | |
626 | inferior_ptid = procfs_first_available (); | |
627 | } | |
6034ae49 | 628 | |
28439f5e PA |
629 | retval = beneath->to_xfer_partial (beneath, object, annex, |
630 | readbuf, writebuf, offset, len); | |
6034ae49 RM |
631 | |
632 | do_cleanups (old_chain); | |
633 | ||
634 | return retval; | |
635 | } | |
636 | ||
c906108c | 637 | static void |
28439f5e | 638 | check_for_thread_db (void) |
c906108c | 639 | { |
28439f5e PA |
640 | td_err_e err; |
641 | ptid_t ptid; | |
c906108c | 642 | |
28439f5e PA |
643 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
644 | if (p_td_ta_new == NULL) | |
645 | return; | |
c906108c | 646 | |
28439f5e PA |
647 | if (sol_thread_active) |
648 | /* Nothing to do. The thread library was already detected and the | |
649 | target vector was already activated. */ | |
650 | return; | |
c906108c | 651 | |
28439f5e PA |
652 | /* Now, initialize libthread_db. This needs to be done after the |
653 | shared libraries are located because it needs information from | |
654 | the user's thread library. */ | |
c906108c | 655 | |
28439f5e PA |
656 | err = p_td_init (); |
657 | if (err != TD_OK) | |
658 | { | |
659 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
660 | return; | |
661 | } | |
c906108c | 662 | |
28439f5e PA |
663 | /* Now attempt to open a connection to the thread library. */ |
664 | err = p_td_ta_new (&main_ph, &main_ta); | |
665 | switch (err) | |
c906108c | 666 | { |
28439f5e PA |
667 | case TD_NOLIBTHREAD: |
668 | /* No thread library was detected. */ | |
669 | break; | |
2689673f | 670 | |
28439f5e PA |
671 | case TD_OK: |
672 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 673 | |
28439f5e | 674 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 675 | push_target (&sol_thread_ops); |
28439f5e | 676 | sol_thread_active = 1; |
c906108c | 677 | |
28439f5e | 678 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f PA |
679 | ptid = lwp_to_thread (inferior_ptid); |
680 | if (PIDGET (ptid) != -1) | |
28439f5e PA |
681 | inferior_ptid = ptid; |
682 | ||
683 | target_find_new_threads (); | |
684 | break; | |
685 | ||
686 | default: | |
687 | warning (_("Cannot initialize thread debugging library: %s"), | |
688 | td_err_string (err)); | |
689 | break; | |
c906108c SS |
690 | } |
691 | } | |
692 | ||
8d027a04 MK |
693 | /* This routine is called whenever a new symbol table is read in, or |
694 | when all symbol tables are removed. libthread_db can only be | |
695 | initialized when it finds the right variables in libthread.so. | |
696 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 697 | the library gets mapped and the symbol table is read in. */ |
c906108c | 698 | |
06d3b283 | 699 | static void |
fba45db2 | 700 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 701 | { |
28439f5e PA |
702 | if (objfile != NULL) |
703 | check_for_thread_db (); | |
c906108c SS |
704 | } |
705 | ||
706 | /* Clean up after the inferior dies. */ | |
707 | ||
708 | static void | |
136d6dae | 709 | sol_thread_mourn_inferior (struct target_ops *ops) |
c906108c | 710 | { |
28439f5e PA |
711 | struct target_ops *beneath = find_target_beneath (ops); |
712 | ||
2689673f | 713 | sol_thread_active = 0; |
c906108c | 714 | |
28439f5e | 715 | unpush_target (ops); |
c906108c | 716 | |
28439f5e | 717 | beneath->to_mourn_inferior (beneath); |
c906108c SS |
718 | } |
719 | ||
8d027a04 MK |
720 | /* Return true if PTID is still active in the inferior. */ |
721 | ||
c906108c | 722 | static int |
28439f5e | 723 | sol_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 724 | { |
8d027a04 | 725 | if (is_thread (ptid)) |
c906108c | 726 | { |
8d027a04 | 727 | /* It's a (user-level) thread. */ |
c906108c SS |
728 | td_err_e val; |
729 | td_thrhandle_t th; | |
39f77062 | 730 | int pid; |
c906108c | 731 | |
39f77062 | 732 | pid = GET_THREAD (ptid); |
c906108c | 733 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
8d027a04 | 734 | return 0; /* Thread not found. */ |
c906108c | 735 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
8d027a04 MK |
736 | return 0; /* Thread not valid. */ |
737 | return 1; /* Known thread. */ | |
c906108c | 738 | } |
c5aa993b | 739 | else |
c906108c | 740 | { |
28439f5e PA |
741 | struct target_ops *beneath = find_target_beneath (ops); |
742 | ||
743 | /* It's an LPW; pass the request on to the layer below. */ | |
744 | return beneath->to_thread_alive (beneath, ptid); | |
c906108c SS |
745 | } |
746 | } | |
747 | ||
c906108c | 748 | \f |
8d027a04 MK |
749 | /* These routines implement the lower half of the thread_db interface, |
750 | i.e. the ps_* routines. */ | |
c906108c | 751 | |
8d027a04 MK |
752 | /* Various versions of <proc_service.h> have slightly different |
753 | function prototypes. In particular, we have | |
c906108c | 754 | |
c5aa993b JM |
755 | NEWER OLDER |
756 | struct ps_prochandle * const struct ps_prochandle * | |
757 | void* char* | |
8d027a04 MK |
758 | const void* char* |
759 | int size_t | |
c906108c | 760 | |
8d027a04 MK |
761 | Which one you have depends on the Solaris version and what patches |
762 | you've applied. On the theory that there are only two major | |
763 | variants, we have configure check the prototype of ps_pdwrite (), | |
c378eb4e | 764 | and use that info to make appropriate typedefs here. */ |
c906108c SS |
765 | |
766 | #ifdef PROC_SERVICE_IS_OLD | |
c5aa993b JM |
767 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
768 | typedef char *gdb_ps_read_buf_t; | |
769 | typedef char *gdb_ps_write_buf_t; | |
c906108c | 770 | typedef int gdb_ps_size_t; |
76e1ee85 | 771 | typedef psaddr_t gdb_ps_addr_t; |
c906108c | 772 | #else |
c5aa993b JM |
773 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
774 | typedef void *gdb_ps_read_buf_t; | |
775 | typedef const void *gdb_ps_write_buf_t; | |
c906108c | 776 | typedef size_t gdb_ps_size_t; |
291dcb3e | 777 | typedef psaddr_t gdb_ps_addr_t; |
c906108c SS |
778 | #endif |
779 | ||
8d027a04 MK |
780 | /* The next four routines are called by libthread_db to tell us to |
781 | stop and stop a particular process or lwp. Since GDB ensures that | |
782 | these are all stopped by the time we call anything in thread_db, | |
783 | these routines need to do nothing. */ | |
c906108c | 784 | |
8d027a04 | 785 | /* Process stop. */ |
d4f3574e | 786 | |
c906108c SS |
787 | ps_err_e |
788 | ps_pstop (gdb_ps_prochandle_t ph) | |
789 | { | |
790 | return PS_OK; | |
791 | } | |
792 | ||
8d027a04 | 793 | /* Process continue. */ |
d4f3574e | 794 | |
c906108c SS |
795 | ps_err_e |
796 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
797 | { | |
798 | return PS_OK; | |
799 | } | |
800 | ||
8d027a04 | 801 | /* LWP stop. */ |
d4f3574e | 802 | |
c906108c SS |
803 | ps_err_e |
804 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
805 | { | |
806 | return PS_OK; | |
807 | } | |
808 | ||
8d027a04 | 809 | /* LWP continue. */ |
d4f3574e | 810 | |
c906108c SS |
811 | ps_err_e |
812 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
813 | { | |
814 | return PS_OK; | |
815 | } | |
816 | ||
d4f3574e SS |
817 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
818 | ||
c906108c SS |
819 | ps_err_e |
820 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
8d027a04 | 821 | const char *ld_symbol_name, gdb_ps_addr_t *ld_symbol_addr) |
c906108c SS |
822 | { |
823 | struct minimal_symbol *ms; | |
824 | ||
825 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
c906108c SS |
826 | if (!ms) |
827 | return PS_NOSYM; | |
828 | ||
829 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); | |
c906108c SS |
830 | return PS_OK; |
831 | } | |
832 | ||
833 | /* Common routine for reading and writing memory. */ | |
834 | ||
835 | static ps_err_e | |
291dcb3e | 836 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
c906108c SS |
837 | char *buf, int size) |
838 | { | |
28439f5e | 839 | int ret; |
c906108c SS |
840 | struct cleanup *old_chain; |
841 | ||
39f77062 | 842 | old_chain = save_inferior_ptid (); |
c906108c | 843 | |
8d027a04 MK |
844 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
845 | { | |
846 | /* It's either a thread or an LWP that isn't alive. Any live | |
847 | LWP will do so use the first available. | |
848 | ||
849 | NOTE: We don't need to call switch_to_thread; we're just | |
850 | reading memory. */ | |
851 | inferior_ptid = procfs_first_available (); | |
852 | } | |
c906108c | 853 | |
23e04971 MS |
854 | #if defined (__sparcv9) |
855 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
856 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 857 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
858 | addr &= 0xffffffff; |
859 | #endif | |
860 | ||
28439f5e PA |
861 | if (dowrite) |
862 | ret = target_write_memory (addr, buf, size); | |
863 | else | |
864 | ret = target_read_memory (addr, buf, size); | |
c906108c SS |
865 | |
866 | do_cleanups (old_chain); | |
867 | ||
28439f5e | 868 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
869 | } |
870 | ||
d4f3574e SS |
871 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
872 | ||
c906108c | 873 | ps_err_e |
291dcb3e | 874 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
875 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
876 | { | |
877 | return rw_common (0, ph, addr, buf, size); | |
878 | } | |
879 | ||
d4f3574e SS |
880 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
881 | ||
c906108c | 882 | ps_err_e |
291dcb3e | 883 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
884 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
885 | { | |
c5aa993b | 886 | return rw_common (1, ph, addr, (char *) buf, size); |
c906108c SS |
887 | } |
888 | ||
d4f3574e SS |
889 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
890 | ||
c906108c | 891 | ps_err_e |
291dcb3e | 892 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
893 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
894 | { | |
895 | return rw_common (0, ph, addr, buf, size); | |
896 | } | |
897 | ||
d4f3574e SS |
898 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
899 | ||
c906108c | 900 | ps_err_e |
291dcb3e | 901 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
902 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
903 | { | |
c5aa993b | 904 | return rw_common (1, ph, addr, (char *) buf, size); |
c906108c SS |
905 | } |
906 | ||
8d027a04 | 907 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
908 | |
909 | ps_err_e | |
8d027a04 | 910 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c SS |
911 | { |
912 | struct cleanup *old_chain; | |
594f7785 | 913 | struct regcache *regcache; |
c906108c | 914 | |
39f77062 | 915 | old_chain = save_inferior_ptid (); |
c906108c | 916 | |
39f77062 | 917 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 918 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c5aa993b | 919 | |
28439f5e | 920 | target_fetch_registers (regcache, -1); |
594f7785 | 921 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c SS |
922 | |
923 | do_cleanups (old_chain); | |
924 | ||
925 | return PS_OK; | |
926 | } | |
927 | ||
8d027a04 | 928 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
929 | |
930 | ps_err_e | |
931 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
932 | const prgregset_t gregset) | |
933 | { | |
934 | struct cleanup *old_chain; | |
594f7785 | 935 | struct regcache *regcache; |
c906108c | 936 | |
39f77062 | 937 | old_chain = save_inferior_ptid (); |
c906108c | 938 | |
39f77062 | 939 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 940 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c5aa993b | 941 | |
594f7785 | 942 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 943 | target_store_registers (regcache, -1); |
c906108c SS |
944 | |
945 | do_cleanups (old_chain); | |
946 | ||
947 | return PS_OK; | |
948 | } | |
949 | ||
d4f3574e SS |
950 | /* Log a message (sends to gdb_stderr). */ |
951 | ||
c906108c | 952 | void |
8d027a04 | 953 | ps_plog (const char *fmt, ...) |
c906108c SS |
954 | { |
955 | va_list args; | |
956 | ||
957 | va_start (args, fmt); | |
958 | ||
959 | vfprintf_filtered (gdb_stderr, fmt, args); | |
960 | } | |
961 | ||
962 | /* Get size of extra register set. Currently a noop. */ | |
963 | ||
964 | ps_err_e | |
965 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
966 | { | |
967 | #if 0 | |
968 | int lwp_fd; | |
969 | int regsize; | |
970 | ps_err_e val; | |
971 | ||
972 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
973 | if (val != PS_OK) | |
974 | return val; | |
975 | ||
976 | if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) | |
977 | { | |
978 | if (errno == EINVAL) | |
979 | return PS_NOFREGS; /* XXX Wrong code, but this is the closest | |
980 | thing in proc_service.h */ | |
981 | ||
982 | print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); | |
983 | return PS_ERR; | |
984 | } | |
985 | #endif | |
986 | ||
987 | return PS_OK; | |
988 | } | |
989 | ||
990 | /* Get extra register set. Currently a noop. */ | |
991 | ||
992 | ps_err_e | |
993 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
994 | { | |
995 | #if 0 | |
996 | int lwp_fd; | |
997 | ps_err_e val; | |
998 | ||
999 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1000 | if (val != PS_OK) | |
1001 | return val; | |
1002 | ||
1003 | if (ioctl (lwp_fd, PIOCGXREG, xregset)) | |
1004 | { | |
1005 | print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); | |
1006 | return PS_ERR; | |
1007 | } | |
1008 | #endif | |
1009 | ||
1010 | return PS_OK; | |
1011 | } | |
1012 | ||
1013 | /* Set extra register set. Currently a noop. */ | |
1014 | ||
1015 | ps_err_e | |
1016 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
1017 | { | |
1018 | #if 0 | |
1019 | int lwp_fd; | |
1020 | ps_err_e val; | |
1021 | ||
1022 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1023 | if (val != PS_OK) | |
1024 | return val; | |
1025 | ||
1026 | if (ioctl (lwp_fd, PIOCSXREG, xregset)) | |
1027 | { | |
1028 | print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); | |
1029 | return PS_ERR; | |
1030 | } | |
1031 | #endif | |
1032 | ||
1033 | return PS_OK; | |
1034 | } | |
1035 | ||
8d027a04 | 1036 | /* Get floating-point registers for LWP. */ |
c906108c SS |
1037 | |
1038 | ps_err_e | |
1039 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
8d027a04 | 1040 | prfpregset_t *fpregset) |
c906108c SS |
1041 | { |
1042 | struct cleanup *old_chain; | |
594f7785 | 1043 | struct regcache *regcache; |
c906108c | 1044 | |
39f77062 | 1045 | old_chain = save_inferior_ptid (); |
c906108c | 1046 | |
39f77062 | 1047 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 1048 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c906108c | 1049 | |
28439f5e | 1050 | target_fetch_registers (regcache, -1); |
594f7785 | 1051 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c SS |
1052 | |
1053 | do_cleanups (old_chain); | |
1054 | ||
1055 | return PS_OK; | |
1056 | } | |
1057 | ||
c378eb4e | 1058 | /* Set floating-point regs for LWP. */ |
c906108c SS |
1059 | |
1060 | ps_err_e | |
1061 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
c5aa993b | 1062 | const prfpregset_t * fpregset) |
c906108c SS |
1063 | { |
1064 | struct cleanup *old_chain; | |
594f7785 | 1065 | struct regcache *regcache; |
c906108c | 1066 | |
39f77062 | 1067 | old_chain = save_inferior_ptid (); |
c906108c | 1068 | |
39f77062 | 1069 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 1070 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c5aa993b | 1071 | |
594f7785 | 1072 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 1073 | target_store_registers (regcache, -1); |
c906108c SS |
1074 | |
1075 | do_cleanups (old_chain); | |
1076 | ||
1077 | return PS_OK; | |
1078 | } | |
1079 | ||
23715f29 | 1080 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
1081 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
1082 | BFD to do this. There might be a more Solaris-specific | |
1083 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
1084 | |
1085 | ps_err_e | |
1086 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) | |
1087 | { | |
1088 | if (exec_bfd == 0) | |
a95ac8b6 PS |
1089 | *data_model = PR_MODEL_UNKNOWN; |
1090 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
1091 | *data_model = PR_MODEL_ILP32; |
1092 | else | |
1093 | *data_model = PR_MODEL_LP64; | |
1094 | ||
1095 | return PS_OK; | |
1096 | } | |
23715f29 | 1097 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 1098 | |
965b60ee | 1099 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 1100 | |
965b60ee JB |
1101 | /* Reads the local descriptor table of a LWP. |
1102 | ||
1103 | This function is necessary on x86-solaris only. Without it, the loading | |
1104 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 1105 | |
c906108c SS |
1106 | ps_err_e |
1107 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1108 | struct ssd *pldt) | |
1109 | { | |
8d027a04 | 1110 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
39f77062 | 1111 | extern struct ssd *procfs_find_LDT_entry (ptid_t); |
05e28a7b | 1112 | struct ssd *ret; |
c906108c | 1113 | |
8d027a04 MK |
1114 | /* FIXME: can't I get the process ID from the prochandle or |
1115 | something? */ | |
2f09097b | 1116 | |
39f77062 | 1117 | if (PIDGET (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
1118 | return PS_BADLID; |
1119 | ||
39f77062 | 1120 | ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_ptid))); |
05e28a7b | 1121 | if (ret) |
c906108c | 1122 | { |
05e28a7b AC |
1123 | memcpy (pldt, ret, sizeof (struct ssd)); |
1124 | return PS_OK; | |
c906108c | 1125 | } |
8d027a04 MK |
1126 | else |
1127 | /* LDT not found. */ | |
c906108c | 1128 | return PS_ERR; |
c5aa993b | 1129 | } |
965b60ee | 1130 | #endif |
c906108c | 1131 | \f |
8d027a04 MK |
1132 | |
1133 | /* Convert PTID to printable form. */ | |
c906108c | 1134 | |
02f1df11 | 1135 | static char * |
117de6a9 | 1136 | solaris_pid_to_str (struct target_ops *ops, ptid_t ptid) |
c906108c SS |
1137 | { |
1138 | static char buf[100]; | |
1139 | ||
39f77062 | 1140 | if (is_thread (ptid)) |
c906108c | 1141 | { |
39f77062 | 1142 | ptid_t lwp; |
c906108c | 1143 | |
39f77062 | 1144 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1145 | |
39f77062 KB |
1146 | if (PIDGET (lwp) == -1) |
1147 | sprintf (buf, "Thread %ld (defunct)", GET_THREAD (ptid)); | |
1148 | else if (PIDGET (lwp) != -2) | |
8d027a04 MK |
1149 | sprintf (buf, "Thread %ld (LWP %ld)", |
1150 | GET_THREAD (ptid), GET_LWP (lwp)); | |
c906108c | 1151 | else |
39f77062 | 1152 | sprintf (buf, "Thread %ld ", GET_THREAD (ptid)); |
c906108c | 1153 | } |
39f77062 KB |
1154 | else if (GET_LWP (ptid) != 0) |
1155 | sprintf (buf, "LWP %ld ", GET_LWP (ptid)); | |
c906108c | 1156 | else |
39f77062 | 1157 | sprintf (buf, "process %d ", PIDGET (ptid)); |
c906108c SS |
1158 | |
1159 | return buf; | |
1160 | } | |
1161 | \f | |
1162 | ||
8d027a04 MK |
1163 | /* Worker bee for find_new_threads. Callback function that gets |
1164 | called once per user-level thread (i.e. not for LWP's). */ | |
c906108c SS |
1165 | |
1166 | static int | |
fba45db2 | 1167 | sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1168 | { |
1169 | td_err_e retval; | |
1170 | td_thrinfo_t ti; | |
39f77062 | 1171 | ptid_t ptid; |
c906108c | 1172 | |
8d027a04 MK |
1173 | retval = p_td_thr_get_info (th, &ti); |
1174 | if (retval != TD_OK) | |
1175 | return -1; | |
1176 | ||
39f77062 | 1177 | ptid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_ptid)); |
2689673f | 1178 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1179 | add_thread (ptid); |
c906108c SS |
1180 | |
1181 | return 0; | |
1182 | } | |
1183 | ||
d4f3574e | 1184 | static void |
28439f5e | 1185 | sol_find_new_threads (struct target_ops *ops) |
c906108c | 1186 | { |
28439f5e | 1187 | struct target_ops *beneath = find_target_beneath (ops); |
8d027a04 MK |
1188 | |
1189 | /* First Find any new LWP's. */ | |
28439f5e PA |
1190 | if (beneath->to_find_new_threads != NULL) |
1191 | beneath->to_find_new_threads (beneath); | |
8d027a04 MK |
1192 | |
1193 | /* Then find any new user-level threads. */ | |
c5aa993b | 1194 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
c906108c SS |
1195 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1196 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1197 | } | |
1198 | ||
8d027a04 MK |
1199 | /* Worker bee for the "info sol-thread" command. This is a callback |
1200 | function that gets called once for each Solaris user-level thread | |
1201 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1202 | that we can think of. */ | |
c906108c | 1203 | |
c5aa993b | 1204 | static int |
fba45db2 | 1205 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1206 | { |
1207 | td_err_e ret; | |
1208 | td_thrinfo_t ti; | |
c906108c | 1209 | |
8d027a04 MK |
1210 | ret = p_td_thr_get_info (th, &ti); |
1211 | if (ret == TD_OK) | |
c906108c | 1212 | { |
c5aa993b JM |
1213 | printf_filtered ("%s thread #%d, lwp %d, ", |
1214 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1215 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1216 | switch (ti.ti_state) |
1217 | { | |
c906108c | 1218 | default: |
c5aa993b JM |
1219 | case TD_THR_UNKNOWN: |
1220 | printf_filtered ("<unknown state>"); | |
1221 | break; | |
1222 | case TD_THR_STOPPED: | |
1223 | printf_filtered ("(stopped)"); | |
1224 | break; | |
1225 | case TD_THR_RUN: | |
1226 | printf_filtered ("(run) "); | |
1227 | break; | |
1228 | case TD_THR_ACTIVE: | |
1229 | printf_filtered ("(active) "); | |
1230 | break; | |
1231 | case TD_THR_ZOMBIE: | |
1232 | printf_filtered ("(zombie) "); | |
1233 | break; | |
1234 | case TD_THR_SLEEP: | |
1235 | printf_filtered ("(asleep) "); | |
1236 | break; | |
1237 | case TD_THR_STOPPED_ASLEEP: | |
1238 | printf_filtered ("(stopped asleep)"); | |
1239 | break; | |
1240 | } | |
8d027a04 | 1241 | /* Print thr_create start function. */ |
c906108c | 1242 | if (ti.ti_startfunc != 0) |
4ce44c66 JM |
1243 | { |
1244 | struct minimal_symbol *msym; | |
1245 | msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1246 | if (msym) | |
8d027a04 | 1247 | printf_filtered (" startfunc: %s\n", |
3567439c | 1248 | SYMBOL_PRINT_NAME (msym)); |
4ce44c66 | 1249 | else |
5af949e3 UW |
1250 | printf_filtered (" startfunc: %s\n", |
1251 | paddress (target_gdbarch, ti.ti_startfunc)); | |
4ce44c66 | 1252 | } |
c906108c | 1253 | |
8d027a04 | 1254 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1255 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 JM |
1256 | { |
1257 | struct minimal_symbol *msym; | |
1258 | msym = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1259 | if (msym) | |
8d027a04 | 1260 | printf_filtered (" - Sleep func: %s\n", |
3567439c | 1261 | SYMBOL_PRINT_NAME (msym)); |
4ce44c66 | 1262 | else |
5af949e3 UW |
1263 | printf_filtered (" - Sleep func: %s\n", |
1264 | paddress (target_gdbarch, ti.ti_startfunc)); | |
4ce44c66 | 1265 | } |
c906108c | 1266 | |
8d027a04 | 1267 | /* Wrap up line, if necessary. */ |
c906108c | 1268 | if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) |
c378eb4e | 1269 | printf_filtered ("\n"); /* don't you hate counting newlines? */ |
c906108c SS |
1270 | } |
1271 | else | |
8a3fe4f8 | 1272 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1273 | |
c5aa993b | 1274 | return 0; |
c906108c SS |
1275 | } |
1276 | ||
8d027a04 MK |
1277 | /* List some state about each Solaris user-level thread in the |
1278 | inferior. */ | |
c906108c SS |
1279 | |
1280 | static void | |
fba45db2 | 1281 | info_solthreads (char *args, int from_tty) |
c906108c | 1282 | { |
c5aa993b | 1283 | p_td_ta_thr_iter (main_ta, info_cb, args, |
c906108c SS |
1284 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1285 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1286 | } | |
c906108c | 1287 | |
3caf13b4 JB |
1288 | /* Callback routine used to find a thread based on the TID part of |
1289 | its PTID. */ | |
1290 | ||
1291 | static int | |
1292 | thread_db_find_thread_from_tid (struct thread_info *thread, void *data) | |
1293 | { | |
1294 | long *tid = (long *) data; | |
1295 | ||
1296 | if (ptid_get_tid (thread->ptid) == *tid) | |
1297 | return 1; | |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | static ptid_t | |
1303 | sol_get_ada_task_ptid (long lwp, long thread) | |
1304 | { | |
1305 | struct thread_info *thread_info = | |
1306 | iterate_over_threads (thread_db_find_thread_from_tid, &thread); | |
1307 | ||
1308 | if (thread_info == NULL) | |
1309 | { | |
1310 | /* The list of threads is probably not up to date. Find any | |
1311 | thread that is missing from the list, and try again. */ | |
1312 | sol_find_new_threads (¤t_target); | |
1313 | thread_info = iterate_over_threads (thread_db_find_thread_from_tid, | |
1314 | &thread); | |
1315 | } | |
1316 | ||
1317 | gdb_assert (thread_info != NULL); | |
1318 | ||
1319 | return (thread_info->ptid); | |
1320 | } | |
1321 | ||
c906108c | 1322 | static void |
fba45db2 | 1323 | init_sol_thread_ops (void) |
c906108c SS |
1324 | { |
1325 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1326 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1327 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
c906108c SS |
1328 | sol_thread_ops.to_detach = sol_thread_detach; |
1329 | sol_thread_ops.to_resume = sol_thread_resume; | |
1330 | sol_thread_ops.to_wait = sol_thread_wait; | |
1331 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1332 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
6034ae49 | 1333 | sol_thread_ops.to_xfer_partial = sol_thread_xfer_partial; |
c906108c | 1334 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
c906108c | 1335 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
ed9a39eb | 1336 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
b83266a0 | 1337 | sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
28439f5e | 1338 | sol_thread_ops.to_stratum = thread_stratum; |
3caf13b4 | 1339 | sol_thread_ops.to_get_ada_task_ptid = sol_get_ada_task_ptid; |
c906108c SS |
1340 | sol_thread_ops.to_magic = OPS_MAGIC; |
1341 | } | |
1342 | ||
02f1df11 JB |
1343 | /* Silence -Wmissing-prototypes. */ |
1344 | extern void _initialize_sol_thread (void); | |
1345 | ||
c906108c | 1346 | void |
fba45db2 | 1347 | _initialize_sol_thread (void) |
c906108c SS |
1348 | { |
1349 | void *dlhandle; | |
1350 | ||
1351 | init_sol_thread_ops (); | |
c906108c SS |
1352 | |
1353 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1354 | if (!dlhandle) | |
1355 | goto die; | |
1356 | ||
1357 | #define resolve(X) \ | |
1358 | if (!(p_##X = dlsym (dlhandle, #X))) \ | |
1359 | goto die; | |
1360 | ||
1361 | resolve (td_log); | |
1362 | resolve (td_ta_new); | |
1363 | resolve (td_ta_delete); | |
1364 | resolve (td_init); | |
1365 | resolve (td_ta_get_ph); | |
1366 | resolve (td_ta_get_nthreads); | |
1367 | resolve (td_ta_tsd_iter); | |
1368 | resolve (td_ta_thr_iter); | |
1369 | resolve (td_thr_validate); | |
1370 | resolve (td_thr_tsd); | |
1371 | resolve (td_thr_get_info); | |
1372 | resolve (td_thr_getfpregs); | |
1373 | resolve (td_thr_getxregsize); | |
1374 | resolve (td_thr_getxregs); | |
1375 | resolve (td_thr_sigsetmask); | |
1376 | resolve (td_thr_setprio); | |
1377 | resolve (td_thr_setsigpending); | |
1378 | resolve (td_thr_setfpregs); | |
1379 | resolve (td_thr_setxregs); | |
1380 | resolve (td_ta_map_id2thr); | |
1381 | resolve (td_ta_map_lwp2thr); | |
1382 | resolve (td_thr_getgregs); | |
1383 | resolve (td_thr_setgregs); | |
1384 | ||
1385 | add_target (&sol_thread_ops); | |
1386 | ||
c5aa993b | 1387 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1388 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1389 | |
8d027a04 | 1390 | /* Hook into new_objfile notification. */ |
06d3b283 | 1391 | observer_attach_new_objfile (sol_thread_new_objfile); |
c906108c SS |
1392 | return; |
1393 | ||
8d027a04 MK |
1394 | die: |
1395 | fprintf_unfiltered (gdb_stderr, "\ | |
1396 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1397 | |
1398 | if (dlhandle) | |
1399 | dlclose (dlhandle); | |
1400 | ||
c906108c SS |
1401 | return; |
1402 | } |