Commit | Line | Data |
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8d027a04 MK |
1 | /* Solaris threads debugging interface. |
2 | ||
6aba47ca | 3 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
4c38e0a4 | 4 | 2007, 2008, 2009, 2010 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" |
d1a7880c | 69 | #include "procfs.h" |
6f4492c8 | 70 | |
c906108c | 71 | struct target_ops sol_thread_ops; |
c906108c | 72 | |
117de6a9 | 73 | extern char *procfs_pid_to_str (struct target_ops *ops, ptid_t ptid); |
c906108c | 74 | |
c60c0f5f MS |
75 | /* Prototypes for supply_gregset etc. */ |
76 | #include "gregset.h" | |
c906108c | 77 | |
8d027a04 MK |
78 | /* This struct is defined by us, but mainly used for the proc_service |
79 | interface. We don't have much use for it, except as a handy place | |
80 | to get a real PID for memory accesses. */ | |
c906108c SS |
81 | |
82 | struct ps_prochandle | |
8d027a04 MK |
83 | { |
84 | ptid_t ptid; | |
85 | }; | |
c906108c SS |
86 | |
87 | struct string_map | |
8d027a04 MK |
88 | { |
89 | int num; | |
90 | char *str; | |
91 | }; | |
c906108c SS |
92 | |
93 | static struct ps_prochandle main_ph; | |
94 | static td_thragent_t *main_ta; | |
95 | static int sol_thread_active = 0; | |
96 | ||
a14ed312 | 97 | static void init_sol_thread_ops (void); |
c906108c | 98 | |
8d027a04 MK |
99 | /* Default definitions: These must be defined in tm.h if they are to |
100 | be shared with a process module such as procfs. */ | |
d4f3574e | 101 | |
ca6724c1 KB |
102 | #define GET_PID(ptid) ptid_get_pid (ptid) |
103 | #define GET_LWP(ptid) ptid_get_lwp (ptid) | |
104 | #define GET_THREAD(ptid) ptid_get_tid (ptid) | |
105 | ||
106 | #define is_lwp(ptid) (GET_LWP (ptid) != 0) | |
107 | #define is_thread(ptid) (GET_THREAD (ptid) != 0) | |
108 | ||
109 | #define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) | |
110 | #define BUILD_THREAD(tid, pid) ptid_build (pid, 0, tid) | |
c906108c | 111 | |
8d027a04 MK |
112 | /* Pointers to routines from libthread_db resolved by dlopen(). */ |
113 | ||
114 | static void (*p_td_log)(const int on_off); | |
115 | static td_err_e (*p_td_ta_new)(const struct ps_prochandle *ph_p, | |
116 | td_thragent_t **ta_pp); | |
117 | static td_err_e (*p_td_ta_delete)(td_thragent_t *ta_p); | |
118 | static td_err_e (*p_td_init)(void); | |
119 | static td_err_e (*p_td_ta_get_ph)(const td_thragent_t *ta_p, | |
120 | struct ps_prochandle **ph_pp); | |
121 | static td_err_e (*p_td_ta_get_nthreads)(const td_thragent_t *ta_p, | |
122 | int *nthread_p); | |
123 | static td_err_e (*p_td_ta_tsd_iter)(const td_thragent_t *ta_p, | |
124 | td_key_iter_f *cb, void *cbdata_p); | |
125 | static td_err_e (*p_td_ta_thr_iter)(const td_thragent_t *ta_p, | |
126 | td_thr_iter_f *cb, void *cbdata_p, | |
127 | td_thr_state_e state, int ti_pri, | |
128 | sigset_t *ti_sigmask_p, | |
129 | unsigned ti_user_flags); | |
130 | static td_err_e (*p_td_thr_validate)(const td_thrhandle_t *th_p); | |
131 | static td_err_e (*p_td_thr_tsd)(const td_thrhandle_t * th_p, | |
132 | const thread_key_t key, void **data_pp); | |
133 | static td_err_e (*p_td_thr_get_info)(const td_thrhandle_t *th_p, | |
134 | td_thrinfo_t *ti_p); | |
135 | static td_err_e (*p_td_thr_getfpregs)(const td_thrhandle_t *th_p, | |
136 | prfpregset_t *fpregset); | |
137 | static td_err_e (*p_td_thr_getxregsize)(const td_thrhandle_t *th_p, | |
138 | int *xregsize); | |
139 | static td_err_e (*p_td_thr_getxregs)(const td_thrhandle_t *th_p, | |
140 | const caddr_t xregset); | |
141 | static td_err_e (*p_td_thr_sigsetmask)(const td_thrhandle_t *th_p, | |
142 | const sigset_t ti_sigmask); | |
143 | static td_err_e (*p_td_thr_setprio)(const td_thrhandle_t *th_p, | |
144 | const int ti_pri); | |
145 | static td_err_e (*p_td_thr_setsigpending)(const td_thrhandle_t *th_p, | |
146 | const uchar_t ti_pending_flag, | |
147 | const sigset_t ti_pending); | |
148 | static td_err_e (*p_td_thr_setfpregs)(const td_thrhandle_t *th_p, | |
149 | const prfpregset_t *fpregset); | |
150 | static td_err_e (*p_td_thr_setxregs)(const td_thrhandle_t *th_p, | |
151 | const caddr_t xregset); | |
152 | static td_err_e (*p_td_ta_map_id2thr)(const td_thragent_t *ta_p, | |
153 | thread_t tid, | |
154 | td_thrhandle_t *th_p); | |
155 | static td_err_e (*p_td_ta_map_lwp2thr)(const td_thragent_t *ta_p, | |
156 | lwpid_t lwpid, | |
157 | td_thrhandle_t *th_p); | |
158 | static td_err_e (*p_td_thr_getgregs)(const td_thrhandle_t *th_p, | |
159 | prgregset_t regset); | |
160 | static td_err_e (*p_td_thr_setgregs)(const td_thrhandle_t *th_p, | |
161 | const prgregset_t regset); | |
162 | \f | |
c906108c | 163 | |
8d027a04 MK |
164 | /* Return the libthread_db error string associated with ERRCODE. If |
165 | ERRCODE is unknown, return an appropriate message. */ | |
c906108c SS |
166 | |
167 | static char * | |
fba45db2 | 168 | td_err_string (td_err_e errcode) |
c906108c | 169 | { |
8d027a04 | 170 | static struct string_map td_err_table[] = |
c5aa993b | 171 | { |
8d027a04 MK |
172 | { TD_OK, "generic \"call succeeded\"" }, |
173 | { TD_ERR, "generic error." }, | |
174 | { TD_NOTHR, "no thread can be found to satisfy query" }, | |
175 | { TD_NOSV, "no synch. variable can be found to satisfy query" }, | |
176 | { TD_NOLWP, "no lwp can be found to satisfy query" }, | |
177 | { TD_BADPH, "invalid process handle" }, | |
178 | { TD_BADTH, "invalid thread handle" }, | |
179 | { TD_BADSH, "invalid synchronization handle" }, | |
180 | { TD_BADTA, "invalid thread agent" }, | |
181 | { TD_BADKEY, "invalid key" }, | |
182 | { TD_NOMSG, "td_thr_event_getmsg() called when there was no message" }, | |
183 | { TD_NOFPREGS, "FPU register set not available for given thread" }, | |
184 | { TD_NOLIBTHREAD, "application not linked with libthread" }, | |
185 | { TD_NOEVENT, "requested event is not supported" }, | |
186 | { TD_NOCAPAB, "capability not available" }, | |
187 | { TD_DBERR, "Debugger service failed" }, | |
188 | { TD_NOAPLIC, "Operation not applicable to" }, | |
189 | { TD_NOTSD, "No thread specific data for this thread" }, | |
190 | { TD_MALLOC, "Malloc failed" }, | |
191 | { TD_PARTIALREG, "Only part of register set was written/read" }, | |
192 | { TD_NOXREGS, "X register set not available for given thread" } | |
c5aa993b | 193 | }; |
c906108c SS |
194 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
195 | int i; | |
196 | static char buf[50]; | |
197 | ||
198 | for (i = 0; i < td_err_size; i++) | |
199 | if (td_err_table[i].num == errcode) | |
200 | return td_err_table[i].str; | |
c5aa993b | 201 | |
8d027a04 | 202 | sprintf (buf, "Unknown libthread_db error code: %d", errcode); |
c906108c SS |
203 | |
204 | return buf; | |
205 | } | |
c906108c | 206 | |
8d027a04 MK |
207 | /* Return the the libthread_db state string assicoated with STATECODE. |
208 | If STATECODE is unknown, return an appropriate message. */ | |
c906108c SS |
209 | |
210 | static char * | |
fba45db2 | 211 | td_state_string (td_thr_state_e statecode) |
c906108c | 212 | { |
8d027a04 | 213 | static struct string_map td_thr_state_table[] = |
c5aa993b | 214 | { |
8d027a04 MK |
215 | { TD_THR_ANY_STATE, "any state" }, |
216 | { TD_THR_UNKNOWN, "unknown" }, | |
217 | { TD_THR_STOPPED, "stopped" }, | |
218 | { TD_THR_RUN, "run" }, | |
219 | { TD_THR_ACTIVE, "active" }, | |
220 | { TD_THR_ZOMBIE, "zombie" }, | |
221 | { TD_THR_SLEEP, "sleep" }, | |
222 | { TD_THR_STOPPED_ASLEEP, "stopped asleep" } | |
c5aa993b | 223 | }; |
8d027a04 MK |
224 | const int td_thr_state_table_size = |
225 | sizeof td_thr_state_table / sizeof (struct string_map); | |
c906108c SS |
226 | int i; |
227 | static char buf[50]; | |
228 | ||
229 | for (i = 0; i < td_thr_state_table_size; i++) | |
230 | if (td_thr_state_table[i].num == statecode) | |
231 | return td_thr_state_table[i].str; | |
c5aa993b | 232 | |
8d027a04 | 233 | sprintf (buf, "Unknown libthread_db state code: %d", statecode); |
c906108c SS |
234 | |
235 | return buf; | |
236 | } | |
237 | \f | |
c906108c | 238 | |
8d027a04 MK |
239 | /* Convert a POSIX or Solaris thread ID into a LWP ID. If THREAD_ID |
240 | doesn't exist, that's an error. If it's an inactive thread, return | |
2689673f | 241 | DEFAULT_LWP. |
c906108c | 242 | |
8d027a04 | 243 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 244 | |
39f77062 KB |
245 | static ptid_t |
246 | thread_to_lwp (ptid_t thread_id, int default_lwp) | |
c906108c SS |
247 | { |
248 | td_thrinfo_t ti; | |
249 | td_thrhandle_t th; | |
250 | td_err_e val; | |
251 | ||
252 | if (is_lwp (thread_id)) | |
8d027a04 | 253 | return thread_id; /* It's already an LWP ID. */ |
c906108c | 254 | |
8d027a04 | 255 | /* It's a thread. Convert to LWP. */ |
c906108c SS |
256 | |
257 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); | |
258 | if (val == TD_NOTHR) | |
8d027a04 | 259 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 260 | else if (val != TD_OK) |
8a3fe4f8 | 261 | error (_("thread_to_lwp: td_ta_map_id2thr %s"), td_err_string (val)); |
c906108c SS |
262 | |
263 | val = p_td_thr_get_info (&th, &ti); | |
264 | if (val == TD_NOTHR) | |
8d027a04 | 265 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 266 | else if (val != TD_OK) |
8a3fe4f8 | 267 | error (_("thread_to_lwp: td_thr_get_info: %s"), td_err_string (val)); |
c906108c SS |
268 | |
269 | if (ti.ti_state != TD_THR_ACTIVE) | |
270 | { | |
271 | if (default_lwp != -1) | |
39f77062 | 272 | return pid_to_ptid (default_lwp); |
8a3fe4f8 | 273 | error (_("thread_to_lwp: thread state not active: %s"), |
c906108c SS |
274 | td_state_string (ti.ti_state)); |
275 | } | |
276 | ||
277 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); | |
278 | } | |
c906108c | 279 | |
8d027a04 MK |
280 | /* Convert an LWP ID into a POSIX or Solaris thread ID. If LWP_ID |
281 | doesn't exists, that's an error. | |
c906108c | 282 | |
8d027a04 | 283 | NOTE: This function probably shouldn't call error(). */ |
c906108c | 284 | |
39f77062 KB |
285 | static ptid_t |
286 | lwp_to_thread (ptid_t lwp) | |
c906108c SS |
287 | { |
288 | td_thrinfo_t ti; | |
289 | td_thrhandle_t th; | |
290 | td_err_e val; | |
291 | ||
292 | if (is_thread (lwp)) | |
8d027a04 | 293 | return lwp; /* It's already a thread ID. */ |
c906108c | 294 | |
8d027a04 | 295 | /* It's an LWP. Convert it to a thread ID. */ |
c906108c | 296 | |
28439f5e | 297 | if (!target_thread_alive (lwp)) |
8d027a04 | 298 | return pid_to_ptid (-1); /* Must be a defunct LPW. */ |
c906108c SS |
299 | |
300 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); | |
301 | if (val == TD_NOTHR) | |
8d027a04 | 302 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 303 | else if (val != TD_OK) |
8a3fe4f8 | 304 | error (_("lwp_to_thread: td_ta_map_lwp2thr: %s."), td_err_string (val)); |
c906108c SS |
305 | |
306 | val = p_td_thr_validate (&th); | |
307 | if (val == TD_NOTHR) | |
8d027a04 | 308 | return lwp; /* Unknown to libthread; just return LPW, */ |
c906108c | 309 | else if (val != TD_OK) |
8a3fe4f8 | 310 | error (_("lwp_to_thread: td_thr_validate: %s."), td_err_string (val)); |
c906108c SS |
311 | |
312 | val = p_td_thr_get_info (&th, &ti); | |
313 | if (val == TD_NOTHR) | |
8d027a04 | 314 | return pid_to_ptid (-1); /* Thread must have terminated. */ |
c906108c | 315 | else if (val != TD_OK) |
8a3fe4f8 | 316 | error (_("lwp_to_thread: td_thr_get_info: %s."), td_err_string (val)); |
c906108c SS |
317 | |
318 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); | |
319 | } | |
320 | \f | |
c906108c | 321 | |
8d027a04 | 322 | /* Most target vector functions from here on actually just pass |
28439f5e PA |
323 | through to the layer beneath, as they don't need to do anything |
324 | specific for threads. */ | |
c906108c | 325 | |
8d027a04 MK |
326 | /* Take a program previously attached to and detaches it. The program |
327 | resumes execution and will no longer stop on signals, etc. We'd | |
328 | better not have left any breakpoints in the program or it'll die | |
329 | when it hits one. For this to work, it may be necessary for the | |
330 | process to have been previously attached. It *might* work if the | |
331 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
332 | |
333 | static void | |
136d6dae | 334 | sol_thread_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c | 335 | { |
28439f5e PA |
336 | struct target_ops *beneath = find_target_beneath (ops); |
337 | ||
2689673f | 338 | sol_thread_active = 0; |
39f77062 | 339 | inferior_ptid = pid_to_ptid (PIDGET (main_ph.ptid)); |
28439f5e PA |
340 | unpush_target (ops); |
341 | beneath->to_detach (beneath, args, from_tty); | |
c906108c SS |
342 | } |
343 | ||
8d027a04 MK |
344 | /* Resume execution of process PTID. If STEP is nozero, then just |
345 | single step it. If SIGNAL is nonzero, restart it with that signal | |
346 | activated. We may have to convert PTID from a thread ID to an LWP | |
347 | ID for procfs. */ | |
c906108c SS |
348 | |
349 | static void | |
28439f5e PA |
350 | sol_thread_resume (struct target_ops *ops, |
351 | ptid_t ptid, int step, enum target_signal signo) | |
c906108c SS |
352 | { |
353 | struct cleanup *old_chain; | |
28439f5e | 354 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c | 355 | |
39f77062 | 356 | old_chain = save_inferior_ptid (); |
c906108c | 357 | |
39f77062 KB |
358 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
359 | if (PIDGET (inferior_ptid) == -1) | |
360 | inferior_ptid = procfs_first_available (); | |
c906108c | 361 | |
39f77062 | 362 | if (PIDGET (ptid) != -1) |
c906108c | 363 | { |
39f77062 | 364 | ptid_t save_ptid = ptid; |
c906108c | 365 | |
39f77062 | 366 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 367 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 368 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 369 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 370 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 371 | GET_THREAD (save_ptid)); |
c906108c SS |
372 | } |
373 | ||
28439f5e | 374 | beneath->to_resume (beneath, ptid, step, signo); |
c906108c SS |
375 | |
376 | do_cleanups (old_chain); | |
377 | } | |
378 | ||
2689673f | 379 | /* Wait for any threads to stop. We may have to convert PTID from a |
8d027a04 | 380 | thread ID to an LWP ID, and vice versa on the way out. */ |
c906108c | 381 | |
39f77062 | 382 | static ptid_t |
117de6a9 | 383 | sol_thread_wait (struct target_ops *ops, |
47608cb1 | 384 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
c906108c | 385 | { |
39f77062 KB |
386 | ptid_t rtnval; |
387 | ptid_t save_ptid; | |
28439f5e | 388 | struct target_ops *beneath = find_target_beneath (ops); |
c906108c SS |
389 | struct cleanup *old_chain; |
390 | ||
39f77062 KB |
391 | save_ptid = inferior_ptid; |
392 | old_chain = save_inferior_ptid (); | |
c906108c | 393 | |
39f77062 KB |
394 | inferior_ptid = thread_to_lwp (inferior_ptid, PIDGET (main_ph.ptid)); |
395 | if (PIDGET (inferior_ptid) == -1) | |
396 | inferior_ptid = procfs_first_available (); | |
c906108c | 397 | |
39f77062 | 398 | if (PIDGET (ptid) != -1) |
c906108c | 399 | { |
39f77062 | 400 | ptid_t save_ptid = ptid; |
c906108c | 401 | |
39f77062 | 402 | ptid = thread_to_lwp (ptid, -2); |
8d027a04 | 403 | if (PIDGET (ptid) == -2) /* Inactive thread. */ |
8a3fe4f8 | 404 | error (_("This version of Solaris can't start inactive threads.")); |
39f77062 | 405 | if (info_verbose && PIDGET (ptid) == -1) |
8a3fe4f8 | 406 | warning (_("Specified thread %ld seems to have terminated"), |
39f77062 | 407 | GET_THREAD (save_ptid)); |
c906108c SS |
408 | } |
409 | ||
47608cb1 | 410 | rtnval = beneath->to_wait (beneath, ptid, ourstatus, options); |
c906108c SS |
411 | |
412 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) | |
413 | { | |
8d027a04 | 414 | /* Map the LWP of interest back to the appropriate thread ID. */ |
c906108c | 415 | rtnval = lwp_to_thread (rtnval); |
39f77062 KB |
416 | if (PIDGET (rtnval) == -1) |
417 | rtnval = save_ptid; | |
c906108c | 418 | |
8d027a04 | 419 | /* See if we have a new thread. */ |
c906108c | 420 | if (is_thread (rtnval) |
39f77062 | 421 | && !ptid_equal (rtnval, save_ptid) |
2689673f PA |
422 | && (!in_thread_list (rtnval) |
423 | || is_exited (rtnval))) | |
93815fbf | 424 | add_thread (rtnval); |
c906108c SS |
425 | } |
426 | ||
8d027a04 MK |
427 | /* During process initialization, we may get here without the thread |
428 | package being initialized, since that can only happen after we've | |
429 | found the shared libs. */ | |
c906108c SS |
430 | |
431 | do_cleanups (old_chain); | |
432 | ||
433 | return rtnval; | |
434 | } | |
435 | ||
436 | static void | |
28439f5e PA |
437 | sol_thread_fetch_registers (struct target_ops *ops, |
438 | struct regcache *regcache, int regnum) | |
c906108c SS |
439 | { |
440 | thread_t thread; | |
441 | td_thrhandle_t thandle; | |
442 | td_err_e val; | |
443 | prgregset_t gregset; | |
444 | prfpregset_t fpregset; | |
e71c308d DJ |
445 | gdb_gregset_t *gregset_p = &gregset; |
446 | gdb_fpregset_t *fpregset_p = &fpregset; | |
28439f5e | 447 | struct target_ops *beneath = find_target_beneath (ops); |
e71c308d | 448 | |
c906108c SS |
449 | #if 0 |
450 | int xregsize; | |
451 | caddr_t xregset; | |
452 | #endif | |
453 | ||
39f77062 | 454 | if (!is_thread (inferior_ptid)) |
8d027a04 | 455 | { |
28439f5e PA |
456 | /* It's an LWP; pass the request on to the layer beneath. */ |
457 | beneath->to_fetch_registers (beneath, regcache, regnum); | |
c906108c SS |
458 | return; |
459 | } | |
460 | ||
8d027a04 | 461 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 462 | thread = GET_THREAD (inferior_ptid); |
c906108c | 463 | if (thread == 0) |
8a3fe4f8 | 464 | error (_("sol_thread_fetch_registers: thread == 0")); |
c906108c SS |
465 | |
466 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
467 | if (val != TD_OK) | |
8a3fe4f8 | 468 | error (_("sol_thread_fetch_registers: td_ta_map_id2thr: %s"), |
c906108c SS |
469 | td_err_string (val)); |
470 | ||
8d027a04 | 471 | /* Get the general-purpose registers. */ |
c906108c SS |
472 | |
473 | val = p_td_thr_getgregs (&thandle, gregset); | |
8d027a04 | 474 | if (val != TD_OK && val != TD_PARTIALREG) |
8a3fe4f8 | 475 | error (_("sol_thread_fetch_registers: td_thr_getgregs %s"), |
c906108c SS |
476 | td_err_string (val)); |
477 | ||
8d027a04 MK |
478 | /* For SPARC, TD_PARTIALREG means that only %i0...%i7, %l0..%l7, %pc |
479 | and %sp are saved (by a thread context switch). */ | |
c906108c | 480 | |
8d027a04 | 481 | /* And, now the floating-point registers. */ |
c906108c SS |
482 | |
483 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
8d027a04 | 484 | if (val != TD_OK && val != TD_NOFPREGS) |
8a3fe4f8 | 485 | error (_("sol_thread_fetch_registers: td_thr_getfpregs %s"), |
c906108c SS |
486 | td_err_string (val)); |
487 | ||
8d027a04 MK |
488 | /* Note that we must call supply_gregset and supply_fpregset *after* |
489 | calling the td routines because the td routines call ps_lget* | |
490 | which affect the values stored in the registers array. */ | |
c906108c | 491 | |
e71c308d DJ |
492 | supply_gregset (regcache, (const gdb_gregset_t *) gregset_p); |
493 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p); | |
c906108c SS |
494 | |
495 | #if 0 | |
8d027a04 | 496 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
497 | val = td_thr_getxregsize (&thandle, &xregsize); |
498 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 499 | error (_("sol_thread_fetch_registers: td_thr_getxregsize %s"), |
c906108c SS |
500 | td_err_string (val)); |
501 | ||
502 | if (val == TD_OK) | |
503 | { | |
504 | xregset = alloca (xregsize); | |
505 | val = td_thr_getxregs (&thandle, xregset); | |
506 | if (val != TD_OK) | |
8a3fe4f8 | 507 | error (_("sol_thread_fetch_registers: td_thr_getxregs %s"), |
c906108c SS |
508 | td_err_string (val)); |
509 | } | |
510 | #endif | |
511 | } | |
512 | ||
513 | static void | |
28439f5e PA |
514 | sol_thread_store_registers (struct target_ops *ops, |
515 | struct regcache *regcache, int regnum) | |
c906108c SS |
516 | { |
517 | thread_t thread; | |
518 | td_thrhandle_t thandle; | |
519 | td_err_e val; | |
8d027a04 | 520 | prgregset_t gregset; |
c906108c SS |
521 | prfpregset_t fpregset; |
522 | #if 0 | |
523 | int xregsize; | |
524 | caddr_t xregset; | |
525 | #endif | |
526 | ||
39f77062 | 527 | if (!is_thread (inferior_ptid)) |
8d027a04 | 528 | { |
28439f5e PA |
529 | struct target_ops *beneath = find_target_beneath (ops); |
530 | ||
531 | /* It's an LWP; pass the request on to the layer beneath. */ | |
532 | beneath->to_store_registers (beneath, regcache, regnum); | |
c906108c SS |
533 | return; |
534 | } | |
535 | ||
8d027a04 | 536 | /* Solaris thread: convert INFERIOR_PTID into a td_thrhandle_t. */ |
39f77062 | 537 | thread = GET_THREAD (inferior_ptid); |
c906108c SS |
538 | |
539 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); | |
540 | if (val != TD_OK) | |
8a3fe4f8 | 541 | error (_("sol_thread_store_registers: td_ta_map_id2thr %s"), |
c906108c SS |
542 | td_err_string (val)); |
543 | ||
8d027a04 MK |
544 | if (regnum != -1) |
545 | { | |
546 | /* Not writing all the registers. */ | |
87232496 | 547 | char old_value[MAX_REGISTER_SIZE]; |
6034ae49 | 548 | |
87232496 | 549 | /* Save new register value. */ |
56be3814 | 550 | regcache_raw_collect (regcache, regnum, old_value); |
c906108c | 551 | |
c60c0f5f | 552 | val = p_td_thr_getgregs (&thandle, gregset); |
c906108c | 553 | if (val != TD_OK) |
8a3fe4f8 | 554 | error (_("sol_thread_store_registers: td_thr_getgregs %s"), |
c906108c SS |
555 | td_err_string (val)); |
556 | val = p_td_thr_getfpregs (&thandle, &fpregset); | |
557 | if (val != TD_OK) | |
8a3fe4f8 | 558 | error (_("sol_thread_store_registers: td_thr_getfpregs %s"), |
c906108c SS |
559 | td_err_string (val)); |
560 | ||
87232496 | 561 | /* Restore new register value. */ |
56be3814 | 562 | regcache_raw_supply (regcache, regnum, old_value); |
c906108c SS |
563 | |
564 | #if 0 | |
8d027a04 | 565 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
566 | val = td_thr_getxregsize (&thandle, &xregsize); |
567 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 568 | error (_("sol_thread_store_registers: td_thr_getxregsize %s"), |
c906108c SS |
569 | td_err_string (val)); |
570 | ||
571 | if (val == TD_OK) | |
572 | { | |
573 | xregset = alloca (xregsize); | |
574 | val = td_thr_getxregs (&thandle, xregset); | |
575 | if (val != TD_OK) | |
8a3fe4f8 | 576 | error (_("sol_thread_store_registers: td_thr_getxregs %s"), |
c906108c SS |
577 | td_err_string (val)); |
578 | } | |
579 | #endif | |
580 | } | |
581 | ||
56be3814 UW |
582 | fill_gregset (regcache, (gdb_gregset_t *) &gregset, regnum); |
583 | fill_fpregset (regcache, (gdb_fpregset_t *) &fpregset, regnum); | |
c906108c | 584 | |
c60c0f5f | 585 | val = p_td_thr_setgregs (&thandle, gregset); |
c906108c | 586 | if (val != TD_OK) |
8a3fe4f8 | 587 | error (_("sol_thread_store_registers: td_thr_setgregs %s"), |
c906108c SS |
588 | td_err_string (val)); |
589 | val = p_td_thr_setfpregs (&thandle, &fpregset); | |
590 | if (val != TD_OK) | |
8a3fe4f8 | 591 | error (_("sol_thread_store_registers: td_thr_setfpregs %s"), |
c906108c SS |
592 | td_err_string (val)); |
593 | ||
594 | #if 0 | |
8d027a04 | 595 | /* FIXME: libthread_db doesn't seem to handle this right. */ |
c906108c SS |
596 | val = td_thr_getxregsize (&thandle, &xregsize); |
597 | if (val != TD_OK && val != TD_NOXREGS) | |
8a3fe4f8 | 598 | error (_("sol_thread_store_registers: td_thr_getxregsize %s"), |
c906108c SS |
599 | td_err_string (val)); |
600 | ||
8d027a04 MK |
601 | /* ??? Should probably do something about writing the xregs here, |
602 | but what are they? */ | |
c906108c SS |
603 | #endif |
604 | } | |
605 | ||
8d027a04 MK |
606 | /* Perform partial transfers on OBJECT. See target_read_partial and |
607 | target_write_partial for details of each variant. One, and only | |
608 | one, of readbuf or writebuf must be non-NULL. */ | |
6034ae49 RM |
609 | |
610 | static LONGEST | |
611 | sol_thread_xfer_partial (struct target_ops *ops, enum target_object object, | |
b6958cfb MK |
612 | const char *annex, gdb_byte *readbuf, |
613 | const gdb_byte *writebuf, | |
614 | ULONGEST offset, LONGEST len) | |
6034ae49 RM |
615 | { |
616 | int retval; | |
617 | struct cleanup *old_chain; | |
28439f5e | 618 | struct target_ops *beneath = find_target_beneath (ops); |
6034ae49 RM |
619 | |
620 | old_chain = save_inferior_ptid (); | |
621 | ||
8d027a04 MK |
622 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
623 | { | |
624 | /* It's either a thread or an LWP that isn't alive. Any live | |
625 | LWP will do so use the first available. | |
626 | ||
627 | NOTE: We don't need to call switch_to_thread; we're just | |
628 | reading memory. */ | |
629 | inferior_ptid = procfs_first_available (); | |
630 | } | |
6034ae49 | 631 | |
28439f5e PA |
632 | retval = beneath->to_xfer_partial (beneath, object, annex, |
633 | readbuf, writebuf, offset, len); | |
6034ae49 RM |
634 | |
635 | do_cleanups (old_chain); | |
636 | ||
637 | return retval; | |
638 | } | |
639 | ||
c906108c | 640 | static void |
28439f5e | 641 | check_for_thread_db (void) |
c906108c | 642 | { |
28439f5e PA |
643 | td_err_e err; |
644 | ptid_t ptid; | |
c906108c | 645 | |
28439f5e PA |
646 | /* Do nothing if we couldn't load libthread_db.so.1. */ |
647 | if (p_td_ta_new == NULL) | |
648 | return; | |
c906108c | 649 | |
28439f5e PA |
650 | if (sol_thread_active) |
651 | /* Nothing to do. The thread library was already detected and the | |
652 | target vector was already activated. */ | |
653 | return; | |
c906108c | 654 | |
28439f5e PA |
655 | /* Now, initialize libthread_db. This needs to be done after the |
656 | shared libraries are located because it needs information from | |
657 | the user's thread library. */ | |
c906108c | 658 | |
28439f5e PA |
659 | err = p_td_init (); |
660 | if (err != TD_OK) | |
661 | { | |
662 | warning (_("sol_thread_new_objfile: td_init: %s"), td_err_string (err)); | |
663 | return; | |
664 | } | |
c906108c | 665 | |
28439f5e PA |
666 | /* Now attempt to open a connection to the thread library. */ |
667 | err = p_td_ta_new (&main_ph, &main_ta); | |
668 | switch (err) | |
c906108c | 669 | { |
28439f5e PA |
670 | case TD_NOLIBTHREAD: |
671 | /* No thread library was detected. */ | |
672 | break; | |
2689673f | 673 | |
28439f5e PA |
674 | case TD_OK: |
675 | printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n")); | |
c906108c | 676 | |
28439f5e | 677 | /* The thread library was detected. Activate the sol_thread target. */ |
c906108c | 678 | push_target (&sol_thread_ops); |
28439f5e | 679 | sol_thread_active = 1; |
c906108c | 680 | |
28439f5e | 681 | main_ph.ptid = inferior_ptid; /* Save for xfer_memory. */ |
2689673f PA |
682 | ptid = lwp_to_thread (inferior_ptid); |
683 | if (PIDGET (ptid) != -1) | |
28439f5e PA |
684 | inferior_ptid = ptid; |
685 | ||
686 | target_find_new_threads (); | |
687 | break; | |
688 | ||
689 | default: | |
690 | warning (_("Cannot initialize thread debugging library: %s"), | |
691 | td_err_string (err)); | |
692 | break; | |
c906108c SS |
693 | } |
694 | } | |
695 | ||
8d027a04 MK |
696 | /* This routine is called whenever a new symbol table is read in, or |
697 | when all symbol tables are removed. libthread_db can only be | |
698 | initialized when it finds the right variables in libthread.so. | |
699 | Since it's a shared library, those variables don't show up until | |
06d3b283 | 700 | the library gets mapped and the symbol table is read in. */ |
c906108c | 701 | |
06d3b283 | 702 | static void |
fba45db2 | 703 | sol_thread_new_objfile (struct objfile *objfile) |
c906108c | 704 | { |
28439f5e PA |
705 | if (objfile != NULL) |
706 | check_for_thread_db (); | |
c906108c SS |
707 | } |
708 | ||
709 | /* Clean up after the inferior dies. */ | |
710 | ||
711 | static void | |
136d6dae | 712 | sol_thread_mourn_inferior (struct target_ops *ops) |
c906108c | 713 | { |
28439f5e PA |
714 | struct target_ops *beneath = find_target_beneath (ops); |
715 | ||
2689673f | 716 | sol_thread_active = 0; |
c906108c | 717 | |
28439f5e | 718 | unpush_target (ops); |
c906108c | 719 | |
28439f5e | 720 | beneath->to_mourn_inferior (beneath); |
c906108c SS |
721 | } |
722 | ||
8d027a04 MK |
723 | /* Return true if PTID is still active in the inferior. */ |
724 | ||
c906108c | 725 | static int |
28439f5e | 726 | sol_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 727 | { |
8d027a04 | 728 | if (is_thread (ptid)) |
c906108c | 729 | { |
8d027a04 | 730 | /* It's a (user-level) thread. */ |
c906108c SS |
731 | td_err_e val; |
732 | td_thrhandle_t th; | |
39f77062 | 733 | int pid; |
c906108c | 734 | |
39f77062 | 735 | pid = GET_THREAD (ptid); |
c906108c | 736 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
8d027a04 | 737 | return 0; /* Thread not found. */ |
c906108c | 738 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
8d027a04 MK |
739 | return 0; /* Thread not valid. */ |
740 | return 1; /* Known thread. */ | |
c906108c | 741 | } |
c5aa993b | 742 | else |
c906108c | 743 | { |
28439f5e PA |
744 | struct target_ops *beneath = find_target_beneath (ops); |
745 | ||
746 | /* It's an LPW; pass the request on to the layer below. */ | |
747 | return beneath->to_thread_alive (beneath, ptid); | |
c906108c SS |
748 | } |
749 | } | |
750 | ||
c906108c | 751 | \f |
8d027a04 MK |
752 | /* These routines implement the lower half of the thread_db interface, |
753 | i.e. the ps_* routines. */ | |
c906108c | 754 | |
8d027a04 MK |
755 | /* Various versions of <proc_service.h> have slightly different |
756 | function prototypes. In particular, we have | |
c906108c | 757 | |
c5aa993b JM |
758 | NEWER OLDER |
759 | struct ps_prochandle * const struct ps_prochandle * | |
760 | void* char* | |
8d027a04 MK |
761 | const void* char* |
762 | int size_t | |
c906108c | 763 | |
8d027a04 MK |
764 | Which one you have depends on the Solaris version and what patches |
765 | you've applied. On the theory that there are only two major | |
766 | variants, we have configure check the prototype of ps_pdwrite (), | |
767 | and use that info to make appropriate typedefs here. */ | |
c906108c SS |
768 | |
769 | #ifdef PROC_SERVICE_IS_OLD | |
c5aa993b JM |
770 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
771 | typedef char *gdb_ps_read_buf_t; | |
772 | typedef char *gdb_ps_write_buf_t; | |
c906108c | 773 | typedef int gdb_ps_size_t; |
76e1ee85 | 774 | typedef psaddr_t gdb_ps_addr_t; |
c906108c | 775 | #else |
c5aa993b JM |
776 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
777 | typedef void *gdb_ps_read_buf_t; | |
778 | typedef const void *gdb_ps_write_buf_t; | |
c906108c | 779 | typedef size_t gdb_ps_size_t; |
291dcb3e | 780 | typedef psaddr_t gdb_ps_addr_t; |
c906108c SS |
781 | #endif |
782 | ||
8d027a04 MK |
783 | /* The next four routines are called by libthread_db to tell us to |
784 | stop and stop a particular process or lwp. Since GDB ensures that | |
785 | these are all stopped by the time we call anything in thread_db, | |
786 | these routines need to do nothing. */ | |
c906108c | 787 | |
8d027a04 | 788 | /* Process stop. */ |
d4f3574e | 789 | |
c906108c SS |
790 | ps_err_e |
791 | ps_pstop (gdb_ps_prochandle_t ph) | |
792 | { | |
793 | return PS_OK; | |
794 | } | |
795 | ||
8d027a04 | 796 | /* Process continue. */ |
d4f3574e | 797 | |
c906108c SS |
798 | ps_err_e |
799 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
800 | { | |
801 | return PS_OK; | |
802 | } | |
803 | ||
8d027a04 | 804 | /* LWP stop. */ |
d4f3574e | 805 | |
c906108c SS |
806 | ps_err_e |
807 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
808 | { | |
809 | return PS_OK; | |
810 | } | |
811 | ||
8d027a04 | 812 | /* LWP continue. */ |
d4f3574e | 813 | |
c906108c SS |
814 | ps_err_e |
815 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
816 | { | |
817 | return PS_OK; | |
818 | } | |
819 | ||
d4f3574e SS |
820 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
821 | ||
c906108c SS |
822 | ps_err_e |
823 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, | |
8d027a04 | 824 | const char *ld_symbol_name, gdb_ps_addr_t *ld_symbol_addr) |
c906108c SS |
825 | { |
826 | struct minimal_symbol *ms; | |
827 | ||
828 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); | |
c906108c SS |
829 | if (!ms) |
830 | return PS_NOSYM; | |
831 | ||
832 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); | |
c906108c SS |
833 | return PS_OK; |
834 | } | |
835 | ||
836 | /* Common routine for reading and writing memory. */ | |
837 | ||
838 | static ps_err_e | |
291dcb3e | 839 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
c906108c SS |
840 | char *buf, int size) |
841 | { | |
28439f5e | 842 | int ret; |
c906108c SS |
843 | struct cleanup *old_chain; |
844 | ||
39f77062 | 845 | old_chain = save_inferior_ptid (); |
c906108c | 846 | |
8d027a04 MK |
847 | if (is_thread (inferior_ptid) || !target_thread_alive (inferior_ptid)) |
848 | { | |
849 | /* It's either a thread or an LWP that isn't alive. Any live | |
850 | LWP will do so use the first available. | |
851 | ||
852 | NOTE: We don't need to call switch_to_thread; we're just | |
853 | reading memory. */ | |
854 | inferior_ptid = procfs_first_available (); | |
855 | } | |
c906108c | 856 | |
23e04971 MS |
857 | #if defined (__sparcv9) |
858 | /* For Sparc64 cross Sparc32, make sure the address has not been | |
859 | accidentally sign-extended (or whatever) to beyond 32 bits. */ | |
359431fb | 860 | if (bfd_get_arch_size (exec_bfd) == 32) |
23e04971 MS |
861 | addr &= 0xffffffff; |
862 | #endif | |
863 | ||
28439f5e PA |
864 | if (dowrite) |
865 | ret = target_write_memory (addr, buf, size); | |
866 | else | |
867 | ret = target_read_memory (addr, buf, size); | |
c906108c SS |
868 | |
869 | do_cleanups (old_chain); | |
870 | ||
28439f5e | 871 | return (ret == 0 ? PS_OK : PS_ERR); |
c906108c SS |
872 | } |
873 | ||
d4f3574e SS |
874 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
875 | ||
c906108c | 876 | ps_err_e |
291dcb3e | 877 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
878 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
879 | { | |
880 | return rw_common (0, ph, addr, buf, size); | |
881 | } | |
882 | ||
d4f3574e SS |
883 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
884 | ||
c906108c | 885 | ps_err_e |
291dcb3e | 886 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
887 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
888 | { | |
c5aa993b | 889 | return rw_common (1, ph, addr, (char *) buf, size); |
c906108c SS |
890 | } |
891 | ||
d4f3574e SS |
892 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
893 | ||
c906108c | 894 | ps_err_e |
291dcb3e | 895 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
896 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
897 | { | |
898 | return rw_common (0, ph, addr, buf, size); | |
899 | } | |
900 | ||
d4f3574e SS |
901 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
902 | ||
c906108c | 903 | ps_err_e |
291dcb3e | 904 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
c906108c SS |
905 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
906 | { | |
c5aa993b | 907 | return rw_common (1, ph, addr, (char *) buf, size); |
c906108c SS |
908 | } |
909 | ||
8d027a04 | 910 | /* Get general-purpose registers for LWP. */ |
c906108c SS |
911 | |
912 | ps_err_e | |
8d027a04 | 913 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) |
c906108c SS |
914 | { |
915 | struct cleanup *old_chain; | |
594f7785 | 916 | struct regcache *regcache; |
c906108c | 917 | |
39f77062 | 918 | old_chain = save_inferior_ptid (); |
c906108c | 919 | |
39f77062 | 920 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 921 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c5aa993b | 922 | |
28439f5e | 923 | target_fetch_registers (regcache, -1); |
594f7785 | 924 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); |
c906108c SS |
925 | |
926 | do_cleanups (old_chain); | |
927 | ||
928 | return PS_OK; | |
929 | } | |
930 | ||
8d027a04 | 931 | /* Set general-purpose registers for LWP. */ |
c906108c SS |
932 | |
933 | ps_err_e | |
934 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
935 | const prgregset_t gregset) | |
936 | { | |
937 | struct cleanup *old_chain; | |
594f7785 | 938 | struct regcache *regcache; |
c906108c | 939 | |
39f77062 | 940 | old_chain = save_inferior_ptid (); |
c906108c | 941 | |
39f77062 | 942 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 943 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c5aa993b | 944 | |
594f7785 | 945 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
28439f5e | 946 | target_store_registers (regcache, -1); |
c906108c SS |
947 | |
948 | do_cleanups (old_chain); | |
949 | ||
950 | return PS_OK; | |
951 | } | |
952 | ||
d4f3574e SS |
953 | /* Log a message (sends to gdb_stderr). */ |
954 | ||
c906108c | 955 | void |
8d027a04 | 956 | ps_plog (const char *fmt, ...) |
c906108c SS |
957 | { |
958 | va_list args; | |
959 | ||
960 | va_start (args, fmt); | |
961 | ||
962 | vfprintf_filtered (gdb_stderr, fmt, args); | |
963 | } | |
964 | ||
965 | /* Get size of extra register set. Currently a noop. */ | |
966 | ||
967 | ps_err_e | |
968 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
969 | { | |
970 | #if 0 | |
971 | int lwp_fd; | |
972 | int regsize; | |
973 | ps_err_e val; | |
974 | ||
975 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
976 | if (val != PS_OK) | |
977 | return val; | |
978 | ||
979 | if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) | |
980 | { | |
981 | if (errno == EINVAL) | |
982 | return PS_NOFREGS; /* XXX Wrong code, but this is the closest | |
983 | thing in proc_service.h */ | |
984 | ||
985 | print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); | |
986 | return PS_ERR; | |
987 | } | |
988 | #endif | |
989 | ||
990 | return PS_OK; | |
991 | } | |
992 | ||
993 | /* Get extra register set. Currently a noop. */ | |
994 | ||
995 | ps_err_e | |
996 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
997 | { | |
998 | #if 0 | |
999 | int lwp_fd; | |
1000 | ps_err_e val; | |
1001 | ||
1002 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1003 | if (val != PS_OK) | |
1004 | return val; | |
1005 | ||
1006 | if (ioctl (lwp_fd, PIOCGXREG, xregset)) | |
1007 | { | |
1008 | print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); | |
1009 | return PS_ERR; | |
1010 | } | |
1011 | #endif | |
1012 | ||
1013 | return PS_OK; | |
1014 | } | |
1015 | ||
1016 | /* Set extra register set. Currently a noop. */ | |
1017 | ||
1018 | ps_err_e | |
1019 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
1020 | { | |
1021 | #if 0 | |
1022 | int lwp_fd; | |
1023 | ps_err_e val; | |
1024 | ||
1025 | val = get_lwp_fd (ph, lwpid, &lwp_fd); | |
1026 | if (val != PS_OK) | |
1027 | return val; | |
1028 | ||
1029 | if (ioctl (lwp_fd, PIOCSXREG, xregset)) | |
1030 | { | |
1031 | print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); | |
1032 | return PS_ERR; | |
1033 | } | |
1034 | #endif | |
1035 | ||
1036 | return PS_OK; | |
1037 | } | |
1038 | ||
8d027a04 | 1039 | /* Get floating-point registers for LWP. */ |
c906108c SS |
1040 | |
1041 | ps_err_e | |
1042 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
8d027a04 | 1043 | prfpregset_t *fpregset) |
c906108c SS |
1044 | { |
1045 | struct cleanup *old_chain; | |
594f7785 | 1046 | struct regcache *regcache; |
c906108c | 1047 | |
39f77062 | 1048 | old_chain = save_inferior_ptid (); |
c906108c | 1049 | |
39f77062 | 1050 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 1051 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c906108c | 1052 | |
28439f5e | 1053 | target_fetch_registers (regcache, -1); |
594f7785 | 1054 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); |
c906108c SS |
1055 | |
1056 | do_cleanups (old_chain); | |
1057 | ||
1058 | return PS_OK; | |
1059 | } | |
1060 | ||
d4f3574e | 1061 | /* Set floating-point regs for LWP */ |
c906108c SS |
1062 | |
1063 | ps_err_e | |
1064 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
c5aa993b | 1065 | const prfpregset_t * fpregset) |
c906108c SS |
1066 | { |
1067 | struct cleanup *old_chain; | |
594f7785 | 1068 | struct regcache *regcache; |
c906108c | 1069 | |
39f77062 | 1070 | old_chain = save_inferior_ptid (); |
c906108c | 1071 | |
39f77062 | 1072 | inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid)); |
c2250ad1 | 1073 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch); |
c5aa993b | 1074 | |
594f7785 | 1075 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
28439f5e | 1076 | target_store_registers (regcache, -1); |
c906108c SS |
1077 | |
1078 | do_cleanups (old_chain); | |
1079 | ||
1080 | return PS_OK; | |
1081 | } | |
1082 | ||
23715f29 | 1083 | #ifdef PR_MODEL_LP64 |
8d027a04 MK |
1084 | /* Identify process as 32-bit or 64-bit. At the moment we're using |
1085 | BFD to do this. There might be a more Solaris-specific | |
1086 | (e.g. procfs) method, but this ought to work. */ | |
23e04971 MS |
1087 | |
1088 | ps_err_e | |
1089 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) | |
1090 | { | |
1091 | if (exec_bfd == 0) | |
a95ac8b6 PS |
1092 | *data_model = PR_MODEL_UNKNOWN; |
1093 | else if (bfd_get_arch_size (exec_bfd) == 32) | |
23e04971 MS |
1094 | *data_model = PR_MODEL_ILP32; |
1095 | else | |
1096 | *data_model = PR_MODEL_LP64; | |
1097 | ||
1098 | return PS_OK; | |
1099 | } | |
23715f29 | 1100 | #endif /* PR_MODEL_LP64 */ |
23e04971 | 1101 | |
965b60ee | 1102 | #if (defined(__i386__) || defined(__x86_64__)) && defined (sun) |
c906108c | 1103 | |
965b60ee JB |
1104 | /* Reads the local descriptor table of a LWP. |
1105 | ||
1106 | This function is necessary on x86-solaris only. Without it, the loading | |
1107 | of libthread_db would fail because of ps_lgetLDT being undefined. */ | |
d4f3574e | 1108 | |
c906108c SS |
1109 | ps_err_e |
1110 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
1111 | struct ssd *pldt) | |
1112 | { | |
8d027a04 | 1113 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c. */ |
39f77062 | 1114 | extern struct ssd *procfs_find_LDT_entry (ptid_t); |
05e28a7b | 1115 | struct ssd *ret; |
c906108c | 1116 | |
8d027a04 MK |
1117 | /* FIXME: can't I get the process ID from the prochandle or |
1118 | something? */ | |
2f09097b | 1119 | |
39f77062 | 1120 | if (PIDGET (inferior_ptid) <= 0 || lwpid <= 0) |
2f09097b ND |
1121 | return PS_BADLID; |
1122 | ||
39f77062 | 1123 | ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_ptid))); |
05e28a7b | 1124 | if (ret) |
c906108c | 1125 | { |
05e28a7b AC |
1126 | memcpy (pldt, ret, sizeof (struct ssd)); |
1127 | return PS_OK; | |
c906108c | 1128 | } |
8d027a04 MK |
1129 | else |
1130 | /* LDT not found. */ | |
c906108c | 1131 | return PS_ERR; |
c5aa993b | 1132 | } |
965b60ee | 1133 | #endif |
c906108c | 1134 | \f |
8d027a04 MK |
1135 | |
1136 | /* Convert PTID to printable form. */ | |
c906108c SS |
1137 | |
1138 | char * | |
117de6a9 | 1139 | solaris_pid_to_str (struct target_ops *ops, ptid_t ptid) |
c906108c SS |
1140 | { |
1141 | static char buf[100]; | |
1142 | ||
39f77062 | 1143 | if (is_thread (ptid)) |
c906108c | 1144 | { |
39f77062 | 1145 | ptid_t lwp; |
c906108c | 1146 | |
39f77062 | 1147 | lwp = thread_to_lwp (ptid, -2); |
c906108c | 1148 | |
39f77062 KB |
1149 | if (PIDGET (lwp) == -1) |
1150 | sprintf (buf, "Thread %ld (defunct)", GET_THREAD (ptid)); | |
1151 | else if (PIDGET (lwp) != -2) | |
8d027a04 MK |
1152 | sprintf (buf, "Thread %ld (LWP %ld)", |
1153 | GET_THREAD (ptid), GET_LWP (lwp)); | |
c906108c | 1154 | else |
39f77062 | 1155 | sprintf (buf, "Thread %ld ", GET_THREAD (ptid)); |
c906108c | 1156 | } |
39f77062 KB |
1157 | else if (GET_LWP (ptid) != 0) |
1158 | sprintf (buf, "LWP %ld ", GET_LWP (ptid)); | |
c906108c | 1159 | else |
39f77062 | 1160 | sprintf (buf, "process %d ", PIDGET (ptid)); |
c906108c SS |
1161 | |
1162 | return buf; | |
1163 | } | |
1164 | \f | |
1165 | ||
8d027a04 MK |
1166 | /* Worker bee for find_new_threads. Callback function that gets |
1167 | called once per user-level thread (i.e. not for LWP's). */ | |
c906108c SS |
1168 | |
1169 | static int | |
fba45db2 | 1170 | sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) |
c906108c SS |
1171 | { |
1172 | td_err_e retval; | |
1173 | td_thrinfo_t ti; | |
39f77062 | 1174 | ptid_t ptid; |
c906108c | 1175 | |
8d027a04 MK |
1176 | retval = p_td_thr_get_info (th, &ti); |
1177 | if (retval != TD_OK) | |
1178 | return -1; | |
1179 | ||
39f77062 | 1180 | ptid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_ptid)); |
2689673f | 1181 | if (!in_thread_list (ptid) || is_exited (ptid)) |
39f77062 | 1182 | add_thread (ptid); |
c906108c SS |
1183 | |
1184 | return 0; | |
1185 | } | |
1186 | ||
d4f3574e | 1187 | static void |
28439f5e | 1188 | sol_find_new_threads (struct target_ops *ops) |
c906108c | 1189 | { |
28439f5e | 1190 | struct target_ops *beneath = find_target_beneath (ops); |
8d027a04 MK |
1191 | |
1192 | /* First Find any new LWP's. */ | |
28439f5e PA |
1193 | if (beneath->to_find_new_threads != NULL) |
1194 | beneath->to_find_new_threads (beneath); | |
8d027a04 MK |
1195 | |
1196 | /* Then find any new user-level threads. */ | |
c5aa993b | 1197 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
c906108c SS |
1198 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1199 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1200 | } | |
1201 | ||
8d027a04 MK |
1202 | /* Worker bee for the "info sol-thread" command. This is a callback |
1203 | function that gets called once for each Solaris user-level thread | |
1204 | (i.e. not for LWPs) in the inferior. Print anything interesting | |
1205 | that we can think of. */ | |
c906108c | 1206 | |
c5aa993b | 1207 | static int |
fba45db2 | 1208 | info_cb (const td_thrhandle_t *th, void *s) |
c906108c SS |
1209 | { |
1210 | td_err_e ret; | |
1211 | td_thrinfo_t ti; | |
c906108c | 1212 | |
8d027a04 MK |
1213 | ret = p_td_thr_get_info (th, &ti); |
1214 | if (ret == TD_OK) | |
c906108c | 1215 | { |
c5aa993b JM |
1216 | printf_filtered ("%s thread #%d, lwp %d, ", |
1217 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", | |
c906108c | 1218 | ti.ti_tid, ti.ti_lid); |
c5aa993b JM |
1219 | switch (ti.ti_state) |
1220 | { | |
c906108c | 1221 | default: |
c5aa993b JM |
1222 | case TD_THR_UNKNOWN: |
1223 | printf_filtered ("<unknown state>"); | |
1224 | break; | |
1225 | case TD_THR_STOPPED: | |
1226 | printf_filtered ("(stopped)"); | |
1227 | break; | |
1228 | case TD_THR_RUN: | |
1229 | printf_filtered ("(run) "); | |
1230 | break; | |
1231 | case TD_THR_ACTIVE: | |
1232 | printf_filtered ("(active) "); | |
1233 | break; | |
1234 | case TD_THR_ZOMBIE: | |
1235 | printf_filtered ("(zombie) "); | |
1236 | break; | |
1237 | case TD_THR_SLEEP: | |
1238 | printf_filtered ("(asleep) "); | |
1239 | break; | |
1240 | case TD_THR_STOPPED_ASLEEP: | |
1241 | printf_filtered ("(stopped asleep)"); | |
1242 | break; | |
1243 | } | |
8d027a04 | 1244 | /* Print thr_create start function. */ |
c906108c | 1245 | if (ti.ti_startfunc != 0) |
4ce44c66 JM |
1246 | { |
1247 | struct minimal_symbol *msym; | |
1248 | msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc); | |
1249 | if (msym) | |
8d027a04 | 1250 | printf_filtered (" startfunc: %s\n", |
3567439c | 1251 | SYMBOL_PRINT_NAME (msym)); |
4ce44c66 | 1252 | else |
5af949e3 UW |
1253 | printf_filtered (" startfunc: %s\n", |
1254 | paddress (target_gdbarch, ti.ti_startfunc)); | |
4ce44c66 | 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 | 1265 | else |
5af949e3 UW |
1266 | printf_filtered (" - Sleep func: %s\n", |
1267 | paddress (target_gdbarch, ti.ti_startfunc)); | |
4ce44c66 | 1268 | } |
c906108c | 1269 | |
8d027a04 | 1270 | /* Wrap up line, if necessary. */ |
c906108c SS |
1271 | if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) |
1272 | printf_filtered ("\n"); /* don't you hate counting newlines? */ | |
1273 | } | |
1274 | else | |
8a3fe4f8 | 1275 | warning (_("info sol-thread: failed to get info for thread.")); |
c906108c | 1276 | |
c5aa993b | 1277 | return 0; |
c906108c SS |
1278 | } |
1279 | ||
8d027a04 MK |
1280 | /* List some state about each Solaris user-level thread in the |
1281 | inferior. */ | |
c906108c SS |
1282 | |
1283 | static void | |
fba45db2 | 1284 | info_solthreads (char *args, int from_tty) |
c906108c | 1285 | { |
c5aa993b | 1286 | p_td_ta_thr_iter (main_ta, info_cb, args, |
c906108c SS |
1287 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
1288 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
1289 | } | |
c906108c | 1290 | |
c906108c | 1291 | static void |
fba45db2 | 1292 | init_sol_thread_ops (void) |
c906108c SS |
1293 | { |
1294 | sol_thread_ops.to_shortname = "solaris-threads"; | |
1295 | sol_thread_ops.to_longname = "Solaris threads and pthread."; | |
1296 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; | |
c906108c SS |
1297 | sol_thread_ops.to_detach = sol_thread_detach; |
1298 | sol_thread_ops.to_resume = sol_thread_resume; | |
1299 | sol_thread_ops.to_wait = sol_thread_wait; | |
1300 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; | |
1301 | sol_thread_ops.to_store_registers = sol_thread_store_registers; | |
6034ae49 | 1302 | sol_thread_ops.to_xfer_partial = sol_thread_xfer_partial; |
c906108c | 1303 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
c906108c | 1304 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
ed9a39eb | 1305 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
b83266a0 | 1306 | sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
28439f5e | 1307 | sol_thread_ops.to_stratum = thread_stratum; |
c906108c SS |
1308 | sol_thread_ops.to_magic = OPS_MAGIC; |
1309 | } | |
1310 | ||
c906108c | 1311 | void |
fba45db2 | 1312 | _initialize_sol_thread (void) |
c906108c SS |
1313 | { |
1314 | void *dlhandle; | |
1315 | ||
1316 | init_sol_thread_ops (); | |
c906108c SS |
1317 | |
1318 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); | |
1319 | if (!dlhandle) | |
1320 | goto die; | |
1321 | ||
1322 | #define resolve(X) \ | |
1323 | if (!(p_##X = dlsym (dlhandle, #X))) \ | |
1324 | goto die; | |
1325 | ||
1326 | resolve (td_log); | |
1327 | resolve (td_ta_new); | |
1328 | resolve (td_ta_delete); | |
1329 | resolve (td_init); | |
1330 | resolve (td_ta_get_ph); | |
1331 | resolve (td_ta_get_nthreads); | |
1332 | resolve (td_ta_tsd_iter); | |
1333 | resolve (td_ta_thr_iter); | |
1334 | resolve (td_thr_validate); | |
1335 | resolve (td_thr_tsd); | |
1336 | resolve (td_thr_get_info); | |
1337 | resolve (td_thr_getfpregs); | |
1338 | resolve (td_thr_getxregsize); | |
1339 | resolve (td_thr_getxregs); | |
1340 | resolve (td_thr_sigsetmask); | |
1341 | resolve (td_thr_setprio); | |
1342 | resolve (td_thr_setsigpending); | |
1343 | resolve (td_thr_setfpregs); | |
1344 | resolve (td_thr_setxregs); | |
1345 | resolve (td_ta_map_id2thr); | |
1346 | resolve (td_ta_map_lwp2thr); | |
1347 | resolve (td_thr_getgregs); | |
1348 | resolve (td_thr_setgregs); | |
1349 | ||
1350 | add_target (&sol_thread_ops); | |
1351 | ||
c5aa993b | 1352 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
1a966eab | 1353 | _("Show info on Solaris user threads."), &maintenanceinfolist); |
c906108c | 1354 | |
8d027a04 | 1355 | /* Hook into new_objfile notification. */ |
06d3b283 | 1356 | observer_attach_new_objfile (sol_thread_new_objfile); |
c906108c SS |
1357 | return; |
1358 | ||
8d027a04 MK |
1359 | die: |
1360 | fprintf_unfiltered (gdb_stderr, "\ | |
1361 | [GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); | |
c906108c SS |
1362 | |
1363 | if (dlhandle) | |
1364 | dlclose (dlhandle); | |
1365 | ||
c906108c SS |
1366 | return; |
1367 | } |