Commit | Line | Data |
---|---|---|
8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
6aba47ca | 3 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
0fb0cc75 | 4 | 2007, 2008, 2009 Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | /* This module implements a sort of half target that sits between the | |
8d027a04 MK |
22 | machine-independent parts of GDB and the /proc interface (procfs.c) |
23 | to provide access to the Solaris user-mode thread implementation. | |
24 | ||
25 | Solaris threads are true user-mode threads, which are invoked via | |
26 | the thr_* and pthread_* (native and POSIX respectivly) interfaces. | |
27 | These are mostly implemented in user-space, with all thread context | |
28 | kept in various structures that live in the user's heap. These | |
29 | should not be confused with lightweight processes (LWPs), which are | |
30 | implemented by the kernel, and scheduled without explicit | |
31 | intervention by the process. | |
32 | ||
33 | Just to confuse things a little, Solaris threads (both native and | |
34 | POSIX) are actually implemented using LWPs. In general, there are | |
35 | going to be more threads than LWPs. There is no fixed | |
36 | correspondence between a thread and an LWP. When a thread wants to | |
37 | run, it gets scheduled onto the first available LWP and can | |
38 | therefore migrate from one LWP to another as time goes on. A | |
c906108c SS |
39 | sleeping thread may not be associated with an LWP at all! |
40 | ||
8d027a04 MK |
41 | To make it possible to mess with threads, Sun provides a library |
42 | called libthread_db.so.1 (not to be confused with | |
43 | libthread_db.so.0, which doesn't have a published interface). This | |
44 | interface has an upper part, which it provides, and a lower part | |
45 | which we provide. The upper part consists of the td_* routines, | |
46 | which allow us to find all the threads, query their state, etc... | |
47 | The lower part consists of all of the ps_*, which are used by the | |
48 | td_* routines to read/write memory, manipulate LWPs, lookup | |
49 | symbols, etc... The ps_* routines actually do most of their work | |
50 | by calling functions in procfs.c. */ | |
c906108c SS |
51 | |
52 | #include "defs.h" | |
53 | #include <thread.h> | |
54 | #include <proc_service.h> | |
55 | #include <thread_db.h> | |
56 | #include "gdbthread.h" | |
57 | #include "target.h" | |
58 | #include "inferior.h" | |
59 | #include <fcntl.h> | |
b8a92b82 | 60 | #include "gdb_stat.h" |
c906108c SS |
61 | #include <dlfcn.h> |
62 | #include "gdbcmd.h" | |
23e04971 | 63 | #include "gdbcore.h" |
4e052eda | 64 | #include "regcache.h" |
d45b6f32 | 65 | #include "solib.h" |
990f9fe3 | 66 | #include "symfile.h" |
06d3b283 | 67 | #include "observer.h" |
6f4492c8 | 68 | #include "gdb_string.h" |
cc35222d PA |
69 | #include <sys/procfs.h> |
70 | #include "proc-utils.h" | |
6f4492c8 | 71 | |
c906108c | 72 | struct target_ops sol_thread_ops; |
c906108c | 73 | |
117de6a9 | 74 | extern char *procfs_pid_to_str (struct target_ops *ops, ptid_t ptid); |
c906108c | 75 | |
c60c0f5f MS |
76 | /* Prototypes for supply_gregset etc. */ |
77 | #include "gregset.h" | |
c906108c | 78 | |
8d027a04 MK |
79 | /* This struct is defined by us, but mainly used for the proc_service |
80 | interface. We don't have much use for it, except as a handy place | |
81 | to get a real PID for memory accesses. */ | |
c906108c SS |
82 | |
83 | struct ps_prochandle | |
8d027a04 MK |
84 | { |
85 | ptid_t ptid; | |
86 | }; | |
c906108c SS |
87 | |
88 | struct string_map | |
8d027a04 MK |
89 | { |
90 | int num; | |
91 | char *str; | |
92 | }; | |
c906108c SS |
93 | |
94 | static struct ps_prochandle main_ph; | |
95 | static td_thragent_t *main_ta; | |
96 | static int sol_thread_active = 0; | |
97 | ||
a14ed312 | 98 | static void init_sol_thread_ops (void); |
c906108c | 99 | |
8d027a04 MK |
100 | /* Default definitions: These must be defined in tm.h if they are to |
101 | be shared with a process module such as procfs. */ | |
d4f3574e | 102 | |
ca6724c1 KB |
103 | #define GET_PID(ptid) ptid_get_pid (ptid) |
104 | #define GET_LWP(ptid) ptid_get_lwp (ptid) | |
105 | #define GET_THREAD(ptid) ptid_get_tid (ptid) | |
106 | ||
107 | #define is_lwp(ptid) (GET_LWP (ptid) != 0) | |
108 | #define is_thread(ptid) (GET_THREAD (ptid) != 0) | |
109 | ||
110 | #define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) | |
111 | #define BUILD_THREAD(tid, pid) ptid_build (pid, 0, tid) | |
c906108c | 112 | |
8d027a04 MK |
113 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
114 | ||
115 | static void (*p_td_log)(const int on_off); | |
116 | static td_err_e (*p_td_ta_new)(const struct ps_prochandle *ph_p, | |
117 | td_thragent_t **ta_pp); | |
118 | static td_err_e (*p_td_ta_delete)(td_thragent_t *ta_p); | |
119 | static td_err_e (*p_td_init)(void); | |
120 | static td_err_e (*p_td_ta_get_ph)(const td_thragent_t *ta_p, | |
121 | struct ps_prochandle **ph_pp); | |
122 | static td_err_e (*p_td_ta_get_nthreads)(const td_thragent_t *ta_p, | |
123 | int *nthread_p); | |
124 | static td_err_e (*p_td_ta_tsd_iter)(const td_thragent_t *ta_p, | |
125 | td_key_iter_f *cb, void *cbdata_p); | |
126 | static td_err_e (*p_td_ta_thr_iter)(const td_thragent_t *ta_p, | |
127 | td_thr_iter_f *cb, void *cbdata_p, | |
128 | td_thr_state_e state, int ti_pri, | |
129 | sigset_t *ti_sigmask_p, | |
130 | unsigned ti_user_flags); | |
131 | static td_err_e (*p_td_thr_validate)(const td_thrhandle_t *th_p); | |
132 | static td_err_e (*p_td_thr_tsd)(const td_thrhandle_t * th_p, | |
133 | const thread_key_t key, void **data_pp); | |
134 | static td_err_e (*p_td_thr_get_info)(const td_thrhandle_t *th_p, | |
135 | td_thrinfo_t *ti_p); | |
136 | static td_err_e (*p_td_thr_getfpregs)(const td_thrhandle_t *th_p, | |
137 | prfpregset_t *fpregset); | |
138 | static td_err_e (*p_td_thr_getxregsize)(const td_thrhandle_t *th_p, | |
139 | int *xregsize); | |
140 | static td_err_e (*p_td_thr_getxregs)(const td_thrhandle_t *th_p, | |
141 | const caddr_t xregset); | |
142 | static td_err_e (*p_td_thr_sigsetmask)(const td_thrhandle_t *th_p, | |
143 | const sigset_t ti_sigmask); | |
144 | static td_err_e (*p_td_thr_setprio)(const td_thrhandle_t *th_p, | |
145 | const int ti_pri); | |
146 | static td_err_e (*p_td_thr_setsigpending)(const td_thrhandle_t *th_p, | |
147 | const uchar_t ti_pending_flag, | |
148 | const sigset_t ti_pending); | |
149 | static td_err_e (*p_td_thr_setfpregs)(const td_thrhandle_t *th_p, | |
150 | const prfpregset_t *fpregset); | |
151 | static td_err_e (*p_td_thr_setxregs)(const td_thrhandle_t *th_p, | |
152 | const caddr_t xregset); | |
153 | static td_err_e (*p_td_ta_map_id2thr)(const td_thragent_t *ta_p, | |
154 | thread_t tid, | |
155 | td_thrhandle_t *th_p); | |
156 | static td_err_e (*p_td_ta_map_lwp2thr)(const td_thragent_t *ta_p, | |
157 | lwpid_t lwpid, | |
158 | td_thrhandle_t *th_p); | |
159 | static td_err_e (*p_td_thr_getgregs)(const td_thrhandle_t *th_p, | |
160 | prgregset_t regset); | |
161 | static td_err_e (*p_td_thr_setgregs)(const td_thrhandle_t *th_p, | |
162 | const prgregset_t regset); | |
163 | \f | |
c906108c | 164 | |
8d027a04 MK |
165 | /* Return the libthread_db error string associated with ERRCODE. If |
166 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c SS |
167 | |
168 | static char * | |
fba45db2 | 169 | td_err_string (td_err_e errcode) |
c906108c | 170 | { |
8d027a04 | 171 | static struct string_map td_err_table[] = |
c5aa993b | 172 | { |
8d027a04 MK |
173 | { TD_OK, "generic \"call succeeded\"" }, |
174 | { TD_ERR, "generic error." }, | |
175 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
176 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
177 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
178 | { TD_BADPH, "invalid process handle" }, | |
179 | { TD_BADTH, "invalid thread handle" }, | |
180 | { TD_BADSH, "invalid synchronization handle" }, | |
181 | { TD_BADTA, "invalid thread agent" }, | |
182 | { TD_BADKEY, "invalid key" }, | |
183 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
184 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
185 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
186 | { TD_NOEVENT, "requested event is not supported" }, | |
187 | { TD_NOCAPAB, "capability not available" }, | |
188 | { TD_DBERR, "Debugger service failed" }, | |
189 | { TD_NOAPLIC, "Operation not applicable to" }, | |
190 | { TD_NOTSD, "No thread specific data for this thread" }, | |
191 | { TD_MALLOC, "Malloc failed" }, | |
192 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
193 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 194 | }; |
c906108c SS |
195 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
196 | int i; | |
197 | static char buf[50]; | |
198 | ||
199 | for (i = 0; i < td_err_size; i++) | |
200 | if (td_err_table[i].num == errcode) | |
201 | return td_err_table[i].str; | |
c5aa993b | 202 | |
8d027a04 | 203 | sprintf (buf, "Unknown libthread_db error code: %d", errcode); |
c906108c SS |
204 | |
205 | return buf; | |
206 | } | |
c906108c | 207 | |
8d027a04 MK |
208 | /* Return the the libthread_db state string assicoated with STATECODE. |
209 | If STATECODE is unknown, return an appropriate message. */ | |
c906108c SS |
210 | |
211 | static char * | |
fba45db2 | 212 | td_state_string (td_thr_state_e statecode) |
c906108c | 213 | { |
8d027a04 | 214 | static struct string_map td_thr_state_table[] = |
c5aa993b | 215 | { |
8d027a04 MK |
216 | { TD_THR_ANY_STATE, "any state" }, |
217 | { TD_THR_UNKNOWN, "unknown" }, | |
218 | { TD_THR_STOPPED, "stopped" }, | |
219 | { TD_THR_RUN, "run" }, | |
220 | { TD_THR_ACTIVE, "active" }, | |
221 | { TD_THR_ZOMBIE, "zombie" }, | |
222 | { TD_THR_SLEEP, "sleep" }, | |
223 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 224 | }; |
8d027a04 MK |
225 | const int td_thr_state_table_size = |
226 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
227 | int i; |
228 | static char buf[50]; | |
229 | ||
230 | for (i = 0; i < td_thr_state_table_size; i++) | |
231 | if (td_thr_state_table[i].num == statecode) | |
232 | return td_thr_state_table[i].str; | |
c5aa993b | 233 | |
8d027a04 | 234 | sprintf (buf, "Unknown libthread_db state code: %d", statecode); |
c906108c SS |
235 | |
236 | return buf; | |
237 | } | |
238 | \f | |
c906108c | 239 | |
8d027a04 MK |
240 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
241 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 242 | DEFAULT_LWP. |
c906108c | 243 | |
8d027a04 | 244 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 245 | |
39f77062 KB |
246 | static ptid_t |
247 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
248 | { |
249 | td_thrinfo_t ti; | |
250 | td_thrhandle_t th; | |
251 | td_err_e val; | |
252 | ||
253 | if (is_lwp (thread_id)) | |
8d027a04 | 254 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 255 | |
8d027a04 | 256 | /* It's a thread. Convert to LWP. */ |
c906108c SS |
257 | |
258 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); | |
259 | if (val == TD_NOTHR) | |
8d027a04 | 260 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 261 | else if (val != TD_OK) |
8a3fe4f8 | 262 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
263 | |
264 | val = p_td_thr_get_info (&th, &ti); | |
265 | if (val == TD_NOTHR) | |
8d027a04 | 266 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 267 | else if (val != TD_OK) |
8a3fe4f8 | 268 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
269 | |
270 | if (ti.ti_state != TD_THR_ACTIVE) | |
271 | { | |
272 | if (default_lwp != -1) | |
39f77062 | 273 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 274 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
275 | td_state_string (ti.ti_state)); |
276 | } | |
277 | ||
278 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); | |
279 | } | |
c906108c | 280 | |
8d027a04 MK |
281 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
282 | doesn't exists, that's an error. | |
c906108c | 283 | |
8d027a04 | 284 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 285 | |
39f77062 KB |
286 | static ptid_t |
287 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
288 | { |
289 | td_thrinfo_t ti; | |
290 | td_thrhandle_t th; | |
291 | td_err_e val; | |
292 | ||
293 | if (is_thread (lwp)) | |
8d027a04 | 294 | return lwp; /* It's already a thread ID. */ |
c906108c | 295 | |
8d027a04 | 296 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 297 | |
28439f5e | 298 | if (!target_thread_alive (lwp)) |
8d027a04 | 299 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c SS |
300 | |
301 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); | |
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_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
306 | |
307 | val = p_td_thr_validate (&th); | |
308 | if (val == TD_NOTHR) | |
8d027a04 | 309 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 310 | else if (val != TD_OK) |
8a3fe4f8 | 311 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
312 | |
313 | val = p_td_thr_get_info (&th, &ti); | |
314 | if (val == TD_NOTHR) | |
8d027a04 | 315 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 316 | else if (val != TD_OK) |
8a3fe4f8 | 317 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c SS |
318 | |
319 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); | |
320 | } | |
321 | \f | |
c906108c | 322 | |
8d027a04 | 323 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
324 | through to the layer beneath, as they don't need to do anything |
325 | specific for threads. */ | |
c906108c | 326 | |
8d027a04 MK |
327 | /* Take a program previously attached to and detaches it. The program |
328 | resumes execution and will no longer stop on signals, etc. We'd | |
329 | better not have left any breakpoints in the program or it'll die | |
330 | when it hits one. For this to work, it may be necessary for the | |
331 | process to have been previously attached. It *might* work if the | |
332 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
333 | |
334 | static void | |
136d6dae | 335 | sol_thread_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c | 336 | { |
28439f5e PA |
337 | struct target_ops *beneath = find_target_beneath (ops); |
338 | ||
2689673f | 339 | sol_thread_active = 0; |
39f77062 | 340 | inferior_ptid = pid_to_ptid (PIDGET (main_ph.ptid)); |
28439f5e PA |
341 | unpush_target (ops); |
342 | beneath->to_detach (beneath, args, from_tty); | |
c906108c SS |
343 | } |
344 | ||
8d027a04 MK |
345 | /* Resume execution of process PTID. If STEP is nozero, then just |
346 | single step it. If SIGNAL is nonzero, restart it with that signal | |
347 | activated. We may have to convert PTID from a thread ID to an LWP | |
348 | ID for procfs. */ | |
c906108c SS |
349 | |
350 | static void | |
28439f5e PA |
351 | sol_thread_resume (struct target_ops *ops, |
352 | ptid_t ptid, int step, enum target_signal signo) | |
c906108c SS |
353 | { |
354 | struct cleanup *old_chain; | |
28439f5e | 355 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c | 356 | |
39f77062 | 357 | old_chain = save_inferior_ptid (); |
c906108c | 358 | |
39f77062 KB |
359 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
360 | if (PIDGET (inferior_ptid) == -1) | |
361 | inferior_ptid = procfs_first_available (); | |
c906108c | 362 | |
39f77062 | 363 | if (PIDGET (ptid) != -1) |
c906108c | 364 | { |
39f77062 | 365 | ptid_t save_ptid = ptid; |
c906108c | 366 | |
39f77062 | 367 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 368 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 369 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 370 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 371 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 372 | GET_THREAD (save_ptid)); |
c906108c SS |
373 | } |
374 | ||
28439f5e | 375 | beneath->to_resume (beneath, ptid, step, signo); |
c906108c SS |
376 | |
377 | do_cleanups (old_chain); | |
378 | } | |
379 | ||
2689673f | 380 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 381 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 382 | |
39f77062 | 383 | static ptid_t |
117de6a9 | 384 | sol_thread_wait (struct target_ops *ops, |
47608cb1 | 385 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
c906108c | 386 | { |
39f77062 KB |
387 | ptid_t rtnval; |
388 | ptid_t save_ptid; | |
28439f5e | 389 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c SS |
390 | struct cleanup *old_chain; |
391 | ||
39f77062 KB |
392 | save_ptid = inferior_ptid; |
393 | old_chain = save_inferior_ptid (); | |
c906108c | 394 | |
39f77062 KB |
395 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
396 | if (PIDGET (inferior_ptid) == -1) | |
397 | inferior_ptid = procfs_first_available (); | |
c906108c | 398 | |
39f77062 | 399 | if (PIDGET (ptid) != -1) |
c906108c | 400 | { |
39f77062 | 401 | ptid_t save_ptid = ptid; |
c906108c | 402 | |
39f77062 | 403 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 404 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 405 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 406 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 407 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 408 | GET_THREAD (save_ptid)); |
c906108c SS |
409 | } |
410 | ||
47608cb1 | 411 | rtnval = beneath->to_wait (beneath, ptid, ourstatus, options); |
c906108c SS |
412 | |
413 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
414 | { | |
8d027a04 | 415 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 416 | rtnval = lwp_to_thread (rtnval); |
39f77062 KB |
417 | if (PIDGET (rtnval) == -1) |
418 | rtnval = save_ptid; | |
c906108c | 419 | |
8d027a04 | 420 | /* See if we have a new thread. */ |
c906108c | 421 | if (is_thread (rtnval) |
39f77062 | 422 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
423 | && (!in_thread_list (rtnval) |
424 | || is_exited (rtnval))) | |
93815fbf | 425 | add_thread (rtnval); |
c906108c SS |
426 | } |
427 | ||
8d027a04 MK |
428 | /* During process initialization, we may get here without the thread |
429 | package being initialized, since that can only happen after we've | |
430 | found the shared libs. */ | |
c906108c SS |
431 | |
432 | do_cleanups (old_chain); | |
433 | ||
434 | return rtnval; | |
435 | } | |
436 | ||
437 | static void | |
28439f5e PA |
438 | sol_thread_fetch_registers (struct target_ops *ops, |
439 | struct regcache *regcache, int regnum) | |
c906108c SS |
440 | { |
441 | thread_t thread; | |
442 | td_thrhandle_t thandle; | |
443 | td_err_e val; | |
444 | prgregset_t gregset; | |
445 | prfpregset_t fpregset; | |
e71c308d DJ |
446 | gdb_gregset_t *gregset_p = &gregset; |
447 | gdb_fpregset_t *fpregset_p = &fpregset; | |
28439f5e | 448 | struct target_ops *beneath = find_target_beneath (ops); |
e71c308d | 449 | |
c906108c SS |
450 | #if 0 |
451 | int xregsize; | |
452 | caddr_t xregset; | |
453 | #endif | |
454 | ||
39f77062 | 455 | if (!is_thread (inferior_ptid)) |
8d027a04 | 456 | { |
28439f5e PA |
457 | /* It's an LWP; pass the request on to the layer beneath. */ |
458 | beneath->to_fetch_registers (beneath, regcache, regnum); | |
c906108c SS |
459 | return; |
460 | } | |
461 | ||
8d027a04 | 462 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 463 | thread = GET_THREAD (inferior_ptid); |
c906108c | 464 | if (thread == 0) |
8a3fe4f8 | 465 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
466 | |
467 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
468 | if (val != TD_OK) | |
8a3fe4f8 | 469 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
470 | td_err_string (val)); |
471 | ||
8d027a04 | 472 | /* Get the general-purpose registers. */ |
c906108c SS |
473 | |
474 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 475 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 476 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
477 | td_err_string (val)); |
478 | ||
8d027a04 MK |
479 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
480 | and %sp are saved (by a thread context switch). */ | |
c906108c | 481 | |
8d027a04 | 482 | /* And, now the floating-point registers. */ |
c906108c SS |
483 | |
484 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 485 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 486 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
487 | td_err_string (val)); |
488 | ||
8d027a04 MK |
489 | /* Note that we must call supply_gregset and supply_fpregset *after* |
490 | calling the td routines because the td routines call ps_lget* | |
491 | which affect the values stored in the registers array. */ | |
c906108c | 492 | |
e71c308d DJ |
493 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
494 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
495 | |
496 | #if 0 | |
8d027a04 | 497 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
498 | val = td_thr_getxregsize (&thandle, &xregsize); |
499 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 500 | error (_("sol_thread_fetch_registers: td_thr_getxregsize %s"), |
c906108c SS |
501 | td_err_string (val)); |
502 | ||
503 | if (val == TD_OK) | |
504 | { | |
505 | xregset = alloca (xregsize); | |
506 | val = td_thr_getxregs (&thandle, xregset); | |
507 | if (val != TD_OK) | |
8a3fe4f8 | 508 | error (_("sol_thread_fetch_registers: td_thr_getxregs %s"), |
c906108c SS |
509 | td_err_string (val)); |
510 | } | |
511 | #endif | |
512 | } | |
513 | ||
514 | static void | |
28439f5e PA |
515 | sol_thread_store_registers (struct target_ops *ops, |
516 | struct regcache *regcache, int regnum) | |
c906108c SS |
517 | { |
518 | thread_t thread; | |
519 | td_thrhandle_t thandle; | |
520 | td_err_e val; | |
8d027a04 | 521 | prgregset_t gregset; |
c906108c SS |
522 | prfpregset_t fpregset; |
523 | #if 0 | |
524 | int xregsize; | |
525 | caddr_t xregset; | |
526 | #endif | |
527 | ||
39f77062 | 528 | if (!is_thread (inferior_ptid)) |
8d027a04 | 529 | { |
28439f5e PA |
530 | struct target_ops *beneath = find_target_beneath (ops); |
531 | ||
532 | /* It's an LWP; pass the request on to the layer beneath. */ | |
533 | beneath->to_store_registers (beneath, regcache, regnum); | |
c906108c SS |
534 | return; |
535 | } | |
536 | ||
8d027a04 | 537 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 538 | thread = GET_THREAD (inferior_ptid); |
c906108c SS |
539 | |
540 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
541 | if (val != TD_OK) | |
8a3fe4f8 | 542 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
543 | td_err_string (val)); |
544 | ||
8d027a04 MK |
545 | if (regnum != -1) |
546 | { | |
547 | /* Not writing all the registers. */ | |
87232496 | 548 | char old_value[MAX_REGISTER_SIZE]; |
6034ae49 | 549 | |
87232496 | 550 | /* Save new register value. */ |
56be3814 | 551 | regcache_raw_collect (regcache, regnum, old_value); |
c906108c | 552 | |
c60c0f5f | 553 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 554 | if (val != TD_OK) |
8a3fe4f8 | 555 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
556 | td_err_string (val)); |
557 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
558 | if (val != TD_OK) | |
8a3fe4f8 | 559 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c SS |
560 | td_err_string (val)); |
561 | ||
87232496 | 562 | /* Restore new register value. */ |
56be3814 | 563 | regcache_raw_supply (regcache, regnum, old_value); |
c906108c SS |
564 | |
565 | #if 0 | |
8d027a04 | 566 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
567 | val = td_thr_getxregsize (&thandle, &xregsize); |
568 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 569 | error (_("sol_thread_store_registers: td_thr_getxregsize %s"), |
c906108c SS |
570 | td_err_string (val)); |
571 | ||
572 | if (val == TD_OK) | |
573 | { | |
574 | xregset = alloca (xregsize); | |
575 | val = td_thr_getxregs (&thandle, xregset); | |
576 | if (val != TD_OK) | |
8a3fe4f8 | 577 | error (_("sol_thread_store_registers: td_thr_getxregs %s"), |
c906108c SS |
578 | td_err_string (val)); |
579 | } | |
580 | #endif | |
581 | } | |
582 | ||
56be3814 UW |
583 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
584 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 585 | |
c60c0f5f | 586 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 587 | if (val != TD_OK) |
8a3fe4f8 | 588 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
589 | td_err_string (val)); |
590 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
591 | if (val != TD_OK) | |
8a3fe4f8 | 592 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c SS |
593 | td_err_string (val)); |
594 | ||
595 | #if 0 | |
8d027a04 | 596 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
597 | val = td_thr_getxregsize (&thandle, &xregsize); |
598 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 599 | error (_("sol_thread_store_registers: td_thr_getxregsize %s"), |
c906108c SS |
600 | td_err_string (val)); |
601 | ||
8d027a04 MK |
602 | /* ??? Should probably do something about writing the xregs here, |
603 | but what are they? */ | |
c906108c SS |
604 | #endif |
605 | } | |
606 | ||
8d027a04 MK |
607 | /* Perform partial transfers on OBJECT. See target_read_partial and |
608 | target_write_partial for details of each variant. One, and only | |
609 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 RM |
610 | |
611 | static LONGEST | |
612 | sol_thread_xfer_partial (struct target_ops *ops, enum target_object object, | |
b6958cfb MK |
613 | const char *annex, gdb_byte *readbuf, |
614 | const gdb_byte *writebuf, | |
615 | ULONGEST offset, LONGEST len) | |
6034ae49 RM |
616 | { |
617 | int retval; | |
618 | struct cleanup *old_chain; | |
28439f5e | 619 | struct target_ops *beneath = find_target_beneath (ops); |
6034ae49 RM |
620 | |
621 | old_chain = save_inferior_ptid (); | |
622 | ||
8d027a04 MK |
623 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
624 | { | |
625 | /* It's either a thread or an LWP that isn't alive. Any live | |
626 | LWP will do so use the first available. | |
627 | ||
628 | NOTE: We don't need to call switch_to_thread; we're just | |
629 | reading memory. */ | |
630 | inferior_ptid = procfs_first_available (); | |
631 | } | |
6034ae49 | 632 | |
28439f5e PA |
633 | retval = beneath->to_xfer_partial (beneath, object, annex, |
634 | readbuf, writebuf, offset, len); | |
6034ae49 RM |
635 | |
636 | do_cleanups (old_chain); | |
637 | ||
638 | return retval; | |
639 | } | |
640 | ||
c906108c | 641 | static void |
28439f5e | 642 | check_for_thread_db (void) |
c906108c | 643 | { |
28439f5e PA |
644 | td_err_e err; |
645 | ptid_t ptid; | |
c906108c | 646 | |
28439f5e PA |
647 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
648 | if (p_td_ta_new == NULL) | |
649 | return; | |
c906108c | 650 | |
28439f5e PA |
651 | if (sol_thread_active) |
652 | /* Nothing to do. The thread library was already detected and the | |
653 | target vector was already activated. */ | |
654 | return; | |
c906108c | 655 | |
28439f5e PA |
656 | /* Now, initialize libthread_db. This needs to be done after the |
657 | shared libraries are located because it needs information from | |
658 | the user's thread library. */ | |
c906108c | 659 | |
28439f5e PA |
660 | err = p_td_init (); |
661 | if (err != TD_OK) | |
662 | { | |
663 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
664 | return; | |
665 | } | |
c906108c | 666 | |
28439f5e PA |
667 | /* Now attempt to open a connection to the thread library. */ |
668 | err = p_td_ta_new (&main_ph, &main_ta); | |
669 | switch (err) | |
c906108c | 670 | { |
28439f5e PA |
671 | case TD_NOLIBTHREAD: |
672 | /* No thread library was detected. */ | |
673 | break; | |
2689673f | 674 | |
28439f5e PA |
675 | case TD_OK: |
676 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 677 | |
28439f5e | 678 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 679 | push_target (&sol_thread_ops); |
28439f5e | 680 | sol_thread_active = 1; |
c906108c | 681 | |
28439f5e | 682 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f PA |
683 | ptid = lwp_to_thread (inferior_ptid); |
684 | if (PIDGET (ptid) != -1) | |
28439f5e PA |
685 | inferior_ptid = ptid; |
686 | ||
687 | target_find_new_threads (); | |
688 | break; | |
689 | ||
690 | default: | |
691 | warning (_("Cannot initialize thread debugging library: %s"), | |
692 | td_err_string (err)); | |
693 | break; | |
c906108c SS |
694 | } |
695 | } | |
696 | ||
8d027a04 MK |
697 | /* This routine is called whenever a new symbol table is read in, or |
698 | when all symbol tables are removed. libthread_db can only be | |
699 | initialized when it finds the right variables in libthread.so. | |
700 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 701 | the library gets mapped and the symbol table is read in. */ |
c906108c | 702 | |
06d3b283 | 703 | static void |
fba45db2 | 704 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 705 | { |
28439f5e PA |
706 | if (objfile != NULL) |
707 | check_for_thread_db (); | |
c906108c SS |
708 | } |
709 | ||
710 | /* Clean up after the inferior dies. */ | |
711 | ||
712 | static void | |
136d6dae | 713 | sol_thread_mourn_inferior (struct target_ops *ops) |
c906108c | 714 | { |
28439f5e PA |
715 | struct target_ops *beneath = find_target_beneath (ops); |
716 | ||
2689673f | 717 | sol_thread_active = 0; |
c906108c | 718 | |
28439f5e | 719 | unpush_target (ops); |
c906108c | 720 | |
28439f5e | 721 | beneath->to_mourn_inferior (beneath); |
c906108c SS |
722 | } |
723 | ||
8d027a04 MK |
724 | /* Return true if PTID is still active in the inferior. */ |
725 | ||
c906108c | 726 | static int |
28439f5e | 727 | sol_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 728 | { |
8d027a04 | 729 | if (is_thread (ptid)) |
c906108c | 730 | { |
8d027a04 | 731 | /* It's a (user-level) thread. */ |
c906108c SS |
732 | td_err_e val; |
733 | td_thrhandle_t th; | |
39f77062 | 734 | int pid; |
c906108c | 735 | |
39f77062 | 736 | pid = GET_THREAD (ptid); |
c906108c | 737 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
8d027a04 | 738 | return 0; /* Thread not found. */ |
c906108c | 739 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
8d027a04 MK |
740 | return 0; /* Thread not valid. */ |
741 | return 1; /* Known thread. */ | |
c906108c | 742 | } |
c5aa993b | 743 | else |
c906108c | 744 | { |
28439f5e PA |
745 | struct target_ops *beneath = find_target_beneath (ops); |
746 | ||
747 | /* It's an LPW; pass the request on to the layer below. */ | |
748 | return beneath->to_thread_alive (beneath, ptid); | |
c906108c SS |
749 | } |
750 | } | |
751 | ||
c906108c | 752 | \f |
8d027a04 MK |
753 | /* These routines implement the lower half of the thread_db interface, |
754 | i.e. the ps_* routines. */ | |
c906108c | 755 | |
8d027a04 MK |
756 | /* Various versions of <proc_service.h> have slightly different |
757 | function prototypes. In particular, we have | |
c906108c | 758 | |
c5aa993b JM |
759 | NEWER OLDER |
760 | struct ps_prochandle * const struct ps_prochandle * | |
761 | void* char* | |
8d027a04 MK |
762 | const void* char* |
763 | int size_t | |
c906108c | 764 | |
8d027a04 MK |
765 | Which one you have depends on the Solaris version and what patches |
766 | you've applied. On the theory that there are only two major | |
767 | variants, we have configure check the prototype of ps_pdwrite (), | |
768 | and use that info to make appropriate typedefs here. */ | |
c906108c SS |
769 | |
770 | #ifdef PROC_SERVICE_IS_OLD | |
c5aa993b JM |
771 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
772 | typedef char *gdb_ps_read_buf_t; | |
773 | typedef char *gdb_ps_write_buf_t; | |
c906108c | 774 | typedef int gdb_ps_size_t; |
76e1ee85 | 775 | typedef psaddr_t gdb_ps_addr_t; |
c906108c | 776 | #else |
c5aa993b JM |
777 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
778 | typedef void *gdb_ps_read_buf_t; | |
779 | typedef const void *gdb_ps_write_buf_t; | |
c906108c | 780 | typedef size_t gdb_ps_size_t; |
291dcb3e | 781 | typedef psaddr_t gdb_ps_addr_t; |
c906108c SS |
782 | #endif |
783 | ||
8d027a04 MK |
784 | /* The next four routines are called by libthread_db to tell us to |
785 | stop and stop a particular process or lwp. Since GDB ensures that | |
786 | these are all stopped by the time we call anything in thread_db, | |
787 | these routines need to do nothing. */ | |
c906108c | 788 | |
8d027a04 | 789 | /* Process stop. */ |
d4f3574e | 790 | |
c906108c SS |
791 | ps_err_e |
792 | ps_pstop (gdb_ps_prochandle_t ph) | |
793 | { | |
794 | return PS_OK; | |
795 | } | |
796 | ||
8d027a04 | 797 | /* Process continue. */ |
d4f3574e | 798 | |
c906108c SS |
799 | ps_err_e |
800 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
801 | { | |
802 | return PS_OK; | |
803 | } | |
804 | ||
8d027a04 | 805 | /* LWP stop. */ |
d4f3574e | 806 | |
c906108c SS |
807 | ps_err_e |
808 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
809 | { | |
810 | return PS_OK; | |
811 | } | |
812 | ||
8d027a04 | 813 | /* LWP continue. */ |
d4f3574e | 814 | |
c906108c SS |
815 | ps_err_e |
816 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
817 | { | |
818 | return PS_OK; | |
819 | } | |
820 | ||
d4f3574e SS |
821 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
822 | ||
c906108c SS |
823 | ps_err_e |
824 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
8d027a04 | 825 | const char *ld_symbol_name, gdb_ps_addr_t *ld_symbol_addr) |
c906108c SS |
826 | { |
827 | struct minimal_symbol *ms; | |
828 | ||
829 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
c906108c SS |
830 | if (!ms) |
831 | return PS_NOSYM; | |
832 | ||
833 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); | |
c906108c SS |
834 | return PS_OK; |
835 | } | |
836 | ||
837 | /* Common routine for reading and writing memory. */ | |
838 | ||
839 | static ps_err_e | |
291dcb3e | 840 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
c906108c SS |
841 | char *buf, int size) |
842 | { | |
28439f5e | 843 | int ret; |
c906108c SS |
844 | struct cleanup *old_chain; |
845 | ||
39f77062 | 846 | old_chain = save_inferior_ptid (); |
c906108c | 847 | |
8d027a04 MK |
848 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
849 | { | |
850 | /* It's either a thread or an LWP that isn't alive. Any live | |
851 | LWP will do so use the first available. | |
852 | ||
853 | NOTE: We don't need to call switch_to_thread; we're just | |
854 | reading memory. */ | |
855 | inferior_ptid = procfs_first_available (); | |
856 | } | |
c906108c | 857 | |
23e04971 MS |
858 | #if defined (__sparcv9) |
859 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
860 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 861 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
862 | addr &= 0xffffffff; |
863 | #endif | |
864 | ||
28439f5e PA |
865 | if (dowrite) |
866 | ret = target_write_memory (addr, buf, size); | |
867 | else | |
868 | ret = target_read_memory (addr, buf, size); | |
c906108c SS |
869 | |
870 | do_cleanups (old_chain); | |
871 | ||
28439f5e | 872 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
873 | } |
874 | ||
d4f3574e SS |
875 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
876 | ||
c906108c | 877 | ps_err_e |
291dcb3e | 878 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
879 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
880 | { | |
881 | return rw_common (0, ph, addr, buf, size); | |
882 | } | |
883 | ||
d4f3574e SS |
884 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
885 | ||
c906108c | 886 | ps_err_e |
291dcb3e | 887 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
888 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
889 | { | |
c5aa993b | 890 | return rw_common (1, ph, addr, (char *) buf, size); |
c906108c SS |
891 | } |
892 | ||
d4f3574e SS |
893 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
894 | ||
c906108c | 895 | ps_err_e |
291dcb3e | 896 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
897 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
898 | { | |
899 | return rw_common (0, ph, addr, buf, size); | |
900 | } | |
901 | ||
d4f3574e SS |
902 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
903 | ||
c906108c | 904 | ps_err_e |
291dcb3e | 905 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
906 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
907 | { | |
c5aa993b | 908 | return rw_common (1, ph, addr, (char *) buf, size); |
c906108c SS |
909 | } |
910 | ||
8d027a04 | 911 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
912 | |
913 | ps_err_e | |
8d027a04 | 914 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c SS |
915 | { |
916 | struct cleanup *old_chain; | |
594f7785 | 917 | struct regcache *regcache; |
c906108c | 918 | |
39f77062 | 919 | old_chain = save_inferior_ptid (); |
c906108c | 920 | |
39f77062 | 921 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
594f7785 | 922 | regcache = get_thread_regcache (inferior_ptid); |
c5aa993b | 923 | |
28439f5e | 924 | target_fetch_registers (regcache, -1); |
594f7785 | 925 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c SS |
926 | |
927 | do_cleanups (old_chain); | |
928 | ||
929 | return PS_OK; | |
930 | } | |
931 | ||
8d027a04 | 932 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
933 | |
934 | ps_err_e | |
935 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
936 | const prgregset_t gregset) | |
937 | { | |
938 | struct cleanup *old_chain; | |
594f7785 | 939 | struct regcache *regcache; |
c906108c | 940 | |
39f77062 | 941 | old_chain = save_inferior_ptid (); |
c906108c | 942 | |
39f77062 | 943 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
594f7785 | 944 | regcache = get_thread_regcache (inferior_ptid); |
c5aa993b | 945 | |
594f7785 | 946 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 947 | target_store_registers (regcache, -1); |
c906108c SS |
948 | |
949 | do_cleanups (old_chain); | |
950 | ||
951 | return PS_OK; | |
952 | } | |
953 | ||
d4f3574e SS |
954 | /* Log a message (sends to gdb_stderr). */ |
955 | ||
c906108c | 956 | void |
8d027a04 | 957 | ps_plog (const char *fmt, ...) |
c906108c SS |
958 | { |
959 | va_list args; | |
960 | ||
961 | va_start (args, fmt); | |
962 | ||
963 | vfprintf_filtered (gdb_stderr, fmt, args); | |
964 | } | |
965 | ||
966 | /* Get size of extra register set. Currently a noop. */ | |
967 | ||
968 | ps_err_e | |
969 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
970 | { | |
971 | #if 0 | |
972 | int lwp_fd; | |
973 | int regsize; | |
974 | ps_err_e val; | |
975 | ||
976 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
977 | if (val != PS_OK) | |
978 | return val; | |
979 | ||
980 | if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) | |
981 | { | |
982 | if (errno == EINVAL) | |
983 | return PS_NOFREGS; /* XXX Wrong code, but this is the closest | |
984 | thing in proc_service.h */ | |
985 | ||
986 | print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); | |
987 | return PS_ERR; | |
988 | } | |
989 | #endif | |
990 | ||
991 | return PS_OK; | |
992 | } | |
993 | ||
994 | /* Get extra register set. Currently a noop. */ | |
995 | ||
996 | ps_err_e | |
997 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
998 | { | |
999 | #if 0 | |
1000 | int lwp_fd; | |
1001 | ps_err_e val; | |
1002 | ||
1003 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1004 | if (val != PS_OK) | |
1005 | return val; | |
1006 | ||
1007 | if (ioctl (lwp_fd, PIOCGXREG, xregset)) | |
1008 | { | |
1009 | print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); | |
1010 | return PS_ERR; | |
1011 | } | |
1012 | #endif | |
1013 | ||
1014 | return PS_OK; | |
1015 | } | |
1016 | ||
1017 | /* Set extra register set. Currently a noop. */ | |
1018 | ||
1019 | ps_err_e | |
1020 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
1021 | { | |
1022 | #if 0 | |
1023 | int lwp_fd; | |
1024 | ps_err_e val; | |
1025 | ||
1026 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1027 | if (val != PS_OK) | |
1028 | return val; | |
1029 | ||
1030 | if (ioctl (lwp_fd, PIOCSXREG, xregset)) | |
1031 | { | |
1032 | print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); | |
1033 | return PS_ERR; | |
1034 | } | |
1035 | #endif | |
1036 | ||
1037 | return PS_OK; | |
1038 | } | |
1039 | ||
8d027a04 | 1040 | /* Get floating-point registers for LWP. */ |
c906108c SS |
1041 | |
1042 | ps_err_e | |
1043 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
8d027a04 | 1044 | prfpregset_t *fpregset) |
c906108c SS |
1045 | { |
1046 | struct cleanup *old_chain; | |
594f7785 | 1047 | struct regcache *regcache; |
c906108c | 1048 | |
39f77062 | 1049 | old_chain = save_inferior_ptid (); |
c906108c | 1050 | |
39f77062 | 1051 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
594f7785 | 1052 | regcache = get_thread_regcache (inferior_ptid); |
c906108c | 1053 | |
28439f5e | 1054 | target_fetch_registers (regcache, -1); |
594f7785 | 1055 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c SS |
1056 | |
1057 | do_cleanups (old_chain); | |
1058 | ||
1059 | return PS_OK; | |
1060 | } | |
1061 | ||
d4f3574e | 1062 | /* Set floating-point regs for LWP */ |
c906108c SS |
1063 | |
1064 | ps_err_e | |
1065 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
c5aa993b | 1066 | const prfpregset_t * fpregset) |
c906108c SS |
1067 | { |
1068 | struct cleanup *old_chain; | |
594f7785 | 1069 | struct regcache *regcache; |
c906108c | 1070 | |
39f77062 | 1071 | old_chain = save_inferior_ptid (); |
c906108c | 1072 | |
39f77062 | 1073 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
594f7785 | 1074 | regcache = get_thread_regcache (inferior_ptid); |
c5aa993b | 1075 | |
594f7785 | 1076 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 1077 | target_store_registers (regcache, -1); |
c906108c SS |
1078 | |
1079 | do_cleanups (old_chain); | |
1080 | ||
1081 | return PS_OK; | |
1082 | } | |
1083 | ||
23715f29 | 1084 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
1085 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
1086 | BFD to do this. There might be a more Solaris-specific | |
1087 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
1088 | |
1089 | ps_err_e | |
1090 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) | |
1091 | { | |
1092 | if (exec_bfd == 0) | |
a95ac8b6 PS |
1093 | *data_model = PR_MODEL_UNKNOWN; |
1094 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
1095 | *data_model = PR_MODEL_ILP32; |
1096 | else | |
1097 | *data_model = PR_MODEL_LP64; | |
1098 | ||
1099 | return PS_OK; | |
1100 | } | |
23715f29 | 1101 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 1102 | |
965b60ee | 1103 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 1104 | |
965b60ee JB |
1105 | /* Reads the local descriptor table of a LWP. |
1106 | ||
1107 | This function is necessary on x86-solaris only. Without it, the loading | |
1108 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 1109 | |
c906108c SS |
1110 | ps_err_e |
1111 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1112 | struct ssd *pldt) | |
1113 | { | |
8d027a04 | 1114 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
39f77062 | 1115 | extern struct ssd *procfs_find_LDT_entry (ptid_t); |
05e28a7b | 1116 | struct ssd *ret; |
c906108c | 1117 | |
8d027a04 MK |
1118 | /* FIXME: can't I get the process ID from the prochandle or |
1119 | something? */ | |
2f09097b | 1120 | |
39f77062 | 1121 | if (PIDGET (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
1122 | return PS_BADLID; |
1123 | ||
39f77062 | 1124 | ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_ptid))); |
05e28a7b | 1125 | if (ret) |
c906108c | 1126 | { |
05e28a7b AC |
1127 | memcpy (pldt, ret, sizeof (struct ssd)); |
1128 | return PS_OK; | |
c906108c | 1129 | } |
8d027a04 MK |
1130 | else |
1131 | /* LDT not found. */ | |
c906108c | 1132 | return PS_ERR; |
c5aa993b | 1133 | } |
965b60ee | 1134 | #endif |
c906108c | 1135 | \f |
8d027a04 MK |
1136 | |
1137 | /* Convert PTID to printable form. */ | |
c906108c SS |
1138 | |
1139 | char * | |
117de6a9 | 1140 | solaris_pid_to_str (struct target_ops *ops, ptid_t ptid) |
c906108c SS |
1141 | { |
1142 | static char buf[100]; | |
1143 | ||
39f77062 | 1144 | if (is_thread (ptid)) |
c906108c | 1145 | { |
39f77062 | 1146 | ptid_t lwp; |
c906108c | 1147 | |
39f77062 | 1148 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1149 | |
39f77062 KB |
1150 | if (PIDGET (lwp) == -1) |
1151 | sprintf (buf, "Thread %ld (defunct)", GET_THREAD (ptid)); | |
1152 | else if (PIDGET (lwp) != -2) | |
8d027a04 MK |
1153 | sprintf (buf, "Thread %ld (LWP %ld)", |
1154 | GET_THREAD (ptid), GET_LWP (lwp)); | |
c906108c | 1155 | else |
39f77062 | 1156 | sprintf (buf, "Thread %ld ", GET_THREAD (ptid)); |
c906108c | 1157 | } |
39f77062 KB |
1158 | else if (GET_LWP (ptid) != 0) |
1159 | sprintf (buf, "LWP %ld ", GET_LWP (ptid)); | |
c906108c | 1160 | else |
39f77062 | 1161 | sprintf (buf, "process %d ", PIDGET (ptid)); |
c906108c SS |
1162 | |
1163 | return buf; | |
1164 | } | |
1165 | \f | |
1166 | ||
8d027a04 MK |
1167 | /* Worker bee for find_new_threads. Callback function that gets |
1168 | called once per user-level thread (i.e. not for LWP's). */ | |
c906108c SS |
1169 | |
1170 | static int | |
fba45db2 | 1171 | sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1172 | { |
1173 | td_err_e retval; | |
1174 | td_thrinfo_t ti; | |
39f77062 | 1175 | ptid_t ptid; |
c906108c | 1176 | |
8d027a04 MK |
1177 | retval = p_td_thr_get_info (th, &ti); |
1178 | if (retval != TD_OK) | |
1179 | return -1; | |
1180 | ||
39f77062 | 1181 | ptid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_ptid)); |
2689673f | 1182 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1183 | add_thread (ptid); |
c906108c SS |
1184 | |
1185 | return 0; | |
1186 | } | |
1187 | ||
d4f3574e | 1188 | static void |
28439f5e | 1189 | sol_find_new_threads (struct target_ops *ops) |
c906108c | 1190 | { |
28439f5e | 1191 | struct target_ops *beneath = find_target_beneath (ops); |
8d027a04 MK |
1192 | |
1193 | /* First Find any new LWP's. */ | |
28439f5e PA |
1194 | if (beneath->to_find_new_threads != NULL) |
1195 | beneath->to_find_new_threads (beneath); | |
8d027a04 MK |
1196 | |
1197 | /* Then find any new user-level threads. */ | |
c5aa993b | 1198 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
c906108c SS |
1199 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1200 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1201 | } | |
1202 | ||
8d027a04 MK |
1203 | /* Worker bee for the "info sol-thread" command. This is a callback |
1204 | function that gets called once for each Solaris user-level thread | |
1205 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1206 | that we can think of. */ | |
c906108c | 1207 | |
c5aa993b | 1208 | static int |
fba45db2 | 1209 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1210 | { |
1211 | td_err_e ret; | |
1212 | td_thrinfo_t ti; | |
c906108c | 1213 | |
8d027a04 MK |
1214 | ret = p_td_thr_get_info (th, &ti); |
1215 | if (ret == TD_OK) | |
c906108c | 1216 | { |
c5aa993b JM |
1217 | printf_filtered ("%s thread #%d, lwp %d, ", |
1218 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1219 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1220 | switch (ti.ti_state) |
1221 | { | |
c906108c | 1222 | default: |
c5aa993b JM |
1223 | case TD_THR_UNKNOWN: |
1224 | printf_filtered ("<unknown state>"); | |
1225 | break; | |
1226 | case TD_THR_STOPPED: | |
1227 | printf_filtered ("(stopped)"); | |
1228 | break; | |
1229 | case TD_THR_RUN: | |
1230 | printf_filtered ("(run) "); | |
1231 | break; | |
1232 | case TD_THR_ACTIVE: | |
1233 | printf_filtered ("(active) "); | |
1234 | break; | |
1235 | case TD_THR_ZOMBIE: | |
1236 | printf_filtered ("(zombie) "); | |
1237 | break; | |
1238 | case TD_THR_SLEEP: | |
1239 | printf_filtered ("(asleep) "); | |
1240 | break; | |
1241 | case TD_THR_STOPPED_ASLEEP: | |
1242 | printf_filtered ("(stopped asleep)"); | |
1243 | break; | |
1244 | } | |
8d027a04 | 1245 | /* Print thr_create start function. */ |
c906108c | 1246 | if (ti.ti_startfunc != 0) |
4ce44c66 JM |
1247 | { |
1248 | struct minimal_symbol *msym; | |
1249 | msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1250 | if (msym) | |
8d027a04 | 1251 | printf_filtered (" startfunc: %s\n", |
3567439c | 1252 | SYMBOL_PRINT_NAME (msym)); |
4ce44c66 JM |
1253 | else |
1254 | printf_filtered (" startfunc: 0x%s\n", paddr (ti.ti_startfunc)); | |
1255 | } | |
c906108c | 1256 | |
8d027a04 | 1257 | /* If thread is asleep, print function that went to sleep. */ |
c906108c | 1258 | if (ti.ti_state == TD_THR_SLEEP) |
4ce44c66 JM |
1259 | { |
1260 | struct minimal_symbol *msym; | |
1261 | msym = lookup_minimal_symbol_by_pc (ti.ti_pc); | |
1262 | if (msym) | |
8d027a04 | 1263 | printf_filtered (" - Sleep func: %s\n", |
3567439c | 1264 | SYMBOL_PRINT_NAME (msym)); |
4ce44c66 JM |
1265 | else |
1266 | printf_filtered (" - Sleep func: 0x%s\n", paddr (ti.ti_startfunc)); | |
1267 | } | |
c906108c | 1268 | |
8d027a04 | 1269 | /* Wrap up line, if necessary. */ |
c906108c SS |
1270 | if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) |
1271 | printf_filtered ("\n"); /* don't you hate counting newlines? */ | |
1272 | } | |
1273 | else | |
8a3fe4f8 | 1274 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1275 | |
c5aa993b | 1276 | return 0; |
c906108c SS |
1277 | } |
1278 | ||
8d027a04 MK |
1279 | /* List some state about each Solaris user-level thread in the |
1280 | inferior. */ | |
c906108c SS |
1281 | |
1282 | static void | |
fba45db2 | 1283 | info_solthreads (char *args, int from_tty) |
c906108c | 1284 | { |
c5aa993b | 1285 | p_td_ta_thr_iter (main_ta, info_cb, args, |
c906108c SS |
1286 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1287 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1288 | } | |
c906108c | 1289 | |
c906108c | 1290 | static void |
fba45db2 | 1291 | init_sol_thread_ops (void) |
c906108c SS |
1292 | { |
1293 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1294 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1295 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
c906108c SS |
1296 | sol_thread_ops.to_detach = sol_thread_detach; |
1297 | sol_thread_ops.to_resume = sol_thread_resume; | |
1298 | sol_thread_ops.to_wait = sol_thread_wait; | |
1299 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1300 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
6034ae49 | 1301 | sol_thread_ops.to_xfer_partial = sol_thread_xfer_partial; |
c906108c | 1302 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
c906108c | 1303 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
ed9a39eb | 1304 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
b83266a0 | 1305 | sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
28439f5e | 1306 | sol_thread_ops.to_stratum = thread_stratum; |
c906108c SS |
1307 | sol_thread_ops.to_magic = OPS_MAGIC; |
1308 | } | |
1309 | ||
c906108c | 1310 | void |
fba45db2 | 1311 | _initialize_sol_thread (void) |
c906108c SS |
1312 | { |
1313 | void *dlhandle; | |
1314 | ||
1315 | init_sol_thread_ops (); | |
c906108c SS |
1316 | |
1317 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1318 | if (!dlhandle) | |
1319 | goto die; | |
1320 | ||
1321 | #define resolve(X) \ | |
1322 | if (!(p_##X = dlsym (dlhandle, #X))) \ | |
1323 | goto die; | |
1324 | ||
1325 | resolve (td_log); | |
1326 | resolve (td_ta_new); | |
1327 | resolve (td_ta_delete); | |
1328 | resolve (td_init); | |
1329 | resolve (td_ta_get_ph); | |
1330 | resolve (td_ta_get_nthreads); | |
1331 | resolve (td_ta_tsd_iter); | |
1332 | resolve (td_ta_thr_iter); | |
1333 | resolve (td_thr_validate); | |
1334 | resolve (td_thr_tsd); | |
1335 | resolve (td_thr_get_info); | |
1336 | resolve (td_thr_getfpregs); | |
1337 | resolve (td_thr_getxregsize); | |
1338 | resolve (td_thr_getxregs); | |
1339 | resolve (td_thr_sigsetmask); | |
1340 | resolve (td_thr_setprio); | |
1341 | resolve (td_thr_setsigpending); | |
1342 | resolve (td_thr_setfpregs); | |
1343 | resolve (td_thr_setxregs); | |
1344 | resolve (td_ta_map_id2thr); | |
1345 | resolve (td_ta_map_lwp2thr); | |
1346 | resolve (td_thr_getgregs); | |
1347 | resolve (td_thr_setgregs); | |
1348 | ||
1349 | add_target (&sol_thread_ops); | |
1350 | ||
c5aa993b | 1351 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1352 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1353 | |
8d027a04 | 1354 | /* Hook into new_objfile notification. */ |
06d3b283 | 1355 | observer_attach_new_objfile (sol_thread_new_objfile); |
c906108c SS |
1356 | return; |
1357 | ||
8d027a04 MK |
1358 | die: |
1359 | fprintf_unfiltered (gdb_stderr, "\ | |
1360 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1361 | |
1362 | if (dlhandle) | |
1363 | dlclose (dlhandle); | |
1364 | ||
c906108c SS |
1365 | return; |
1366 | } |