1 /* Low level interface for debugging Solaris threads for GDB, the GNU debugger.
2 Copyright 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* This module implements a sort of half target that sits between the
22 machine-independent parts of GDB and the /proc interface (procfs.c) to
23 provide access to the Solaris user-mode thread implementation.
25 Solaris threads are true user-mode threads, which are invoked via the thr_*
26 and pthread_* (native and Posix respectivly) interfaces. These are mostly
27 implemented in user-space, with all thread context kept in various
28 structures that live in the user's heap. These should not be confused with
29 lightweight processes (LWPs), which are implemented by the kernel, and
30 scheduled without explicit intervention by the process.
32 Just to confuse things a little, Solaris threads (both native and Posix) are
33 actually implemented using LWPs. In general, there are going to be more
34 threads than LWPs. There is no fixed correspondence between a thread and an
35 LWP. When a thread wants to run, it gets scheduled onto the first available
36 LWP and can therefore migrate from one LWP to another as time goes on. A
37 sleeping thread may not be associated with an LWP at all!
39 To make it possible to mess with threads, Sun provides a library called
40 libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't
41 have a published interface). This interface has an upper part, which it
42 provides, and a lower part which I provide. The upper part consists of the
43 td_* routines, which allow me to find all the threads, query their state,
44 etc... The lower part consists of all of the ps_*, which are used by the
45 td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc...
46 The ps_* routines actually do most of their work by calling functions in
51 #include <proc_service.h>
52 #include <thread_db.h>
53 #include "gdbthread.h"
62 extern struct target_ops sol_thread_ops
; /* Forward declaration */
63 extern struct target_ops sol_core_ops
; /* Forward declaration */
65 /* place to store core_ops before we overwrite it */
66 static struct target_ops orig_core_ops
;
68 struct target_ops sol_thread_ops
;
69 struct target_ops sol_core_ops
;
71 extern int procfs_suppress_run
;
72 extern struct target_ops procfs_ops
; /* target vector for procfs.c */
73 extern struct target_ops core_ops
; /* target vector for corelow.c */
74 extern char *procfs_pid_to_str (int pid
);
76 /* Prototypes for supply_gregset etc. */
79 /* This struct is defined by us, but mainly used for the proc_service interface.
80 We don't have much use for it, except as a handy place to get a real pid
81 for memory accesses. */
94 static struct ps_prochandle main_ph
;
95 static td_thragent_t
*main_ta
;
96 static int sol_thread_active
= 0;
98 static struct cleanup
*save_inferior_pid (void);
99 static void restore_inferior_pid (void *pid
);
100 static char *td_err_string (td_err_e errcode
);
101 static char *td_state_string (td_thr_state_e statecode
);
102 static int thread_to_lwp (int thread_id
, int default_lwp
);
103 static void sol_thread_resume (int pid
, int step
, enum target_signal signo
);
104 static int lwp_to_thread (int lwp
);
105 static int sol_thread_alive (int pid
);
106 static void sol_core_close (int quitting
);
108 static void init_sol_thread_ops (void);
109 static void init_sol_core_ops (void);
111 /* Default definitions: These must be defined in tm.h
112 if they are to be shared with a process module such as procfs. */
114 #define THREAD_FLAG 0x80000000
115 #define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0)
116 #define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0)
117 #define GET_LWP(PID) TIDGET (PID)
118 #define GET_THREAD(PID) TIDGET (PID)
119 #define BUILD_LWP(TID, PID) MERGEPID (PID, TID)
121 #define BUILD_THREAD(TID, PID) (MERGEPID (PID, TID) | THREAD_FLAG)
123 /* Pointers to routines from lithread_db resolved by dlopen() */
125 static void (*p_td_log
) (const int on_off
);
126 static td_err_e (*p_td_ta_new
) (const struct ps_prochandle
* ph_p
,
127 td_thragent_t
** ta_pp
);
128 static td_err_e (*p_td_ta_delete
) (td_thragent_t
* ta_p
);
129 static td_err_e (*p_td_init
) (void);
130 static td_err_e (*p_td_ta_get_ph
) (const td_thragent_t
* ta_p
,
131 struct ps_prochandle
** ph_pp
);
132 static td_err_e (*p_td_ta_get_nthreads
) (const td_thragent_t
* ta_p
,
134 static td_err_e (*p_td_ta_tsd_iter
) (const td_thragent_t
* ta_p
,
137 static td_err_e (*p_td_ta_thr_iter
) (const td_thragent_t
* ta_p
,
140 td_thr_state_e state
,
142 sigset_t
* ti_sigmask_p
,
143 unsigned ti_user_flags
);
144 static td_err_e (*p_td_thr_validate
) (const td_thrhandle_t
* th_p
);
145 static td_err_e (*p_td_thr_tsd
) (const td_thrhandle_t
* th_p
,
146 const thread_key_t key
,
148 static td_err_e (*p_td_thr_get_info
) (const td_thrhandle_t
* th_p
,
149 td_thrinfo_t
* ti_p
);
150 static td_err_e (*p_td_thr_getfpregs
) (const td_thrhandle_t
* th_p
,
151 prfpregset_t
* fpregset
);
152 static td_err_e (*p_td_thr_getxregsize
) (const td_thrhandle_t
* th_p
,
154 static td_err_e (*p_td_thr_getxregs
) (const td_thrhandle_t
* th_p
,
155 const caddr_t xregset
);
156 static td_err_e (*p_td_thr_sigsetmask
) (const td_thrhandle_t
* th_p
,
157 const sigset_t ti_sigmask
);
158 static td_err_e (*p_td_thr_setprio
) (const td_thrhandle_t
* th_p
,
160 static td_err_e (*p_td_thr_setsigpending
) (const td_thrhandle_t
* th_p
,
161 const uchar_t ti_pending_flag
,
162 const sigset_t ti_pending
);
163 static td_err_e (*p_td_thr_setfpregs
) (const td_thrhandle_t
* th_p
,
164 const prfpregset_t
* fpregset
);
165 static td_err_e (*p_td_thr_setxregs
) (const td_thrhandle_t
* th_p
,
166 const caddr_t xregset
);
167 static td_err_e (*p_td_ta_map_id2thr
) (const td_thragent_t
* ta_p
,
169 td_thrhandle_t
* th_p
);
170 static td_err_e (*p_td_ta_map_lwp2thr
) (const td_thragent_t
* ta_p
,
172 td_thrhandle_t
* th_p
);
173 static td_err_e (*p_td_thr_getgregs
) (const td_thrhandle_t
* th_p
,
175 static td_err_e (*p_td_thr_setgregs
) (const td_thrhandle_t
* th_p
,
176 const prgregset_t regset
);
182 td_err_string - Convert a thread_db error code to a string
186 char * td_err_string (errcode)
190 Return the thread_db error string associated with errcode. If errcode
191 is unknown, then return a message.
196 td_err_string (td_err_e errcode
)
198 static struct string_map
201 {TD_OK
, "generic \"call succeeded\""},
202 {TD_ERR
, "generic error."},
203 {TD_NOTHR
, "no thread can be found to satisfy query"},
204 {TD_NOSV
, "no synch. variable can be found to satisfy query"},
205 {TD_NOLWP
, "no lwp can be found to satisfy query"},
206 {TD_BADPH
, "invalid process handle"},
207 {TD_BADTH
, "invalid thread handle"},
208 {TD_BADSH
, "invalid synchronization handle"},
209 {TD_BADTA
, "invalid thread agent"},
210 {TD_BADKEY
, "invalid key"},
211 {TD_NOMSG
, "td_thr_event_getmsg() called when there was no message"},
212 {TD_NOFPREGS
, "FPU register set not available for given thread"},
213 {TD_NOLIBTHREAD
, "application not linked with libthread"},
214 {TD_NOEVENT
, "requested event is not supported"},
215 {TD_NOCAPAB
, "capability not available"},
216 {TD_DBERR
, "Debugger service failed"},
217 {TD_NOAPLIC
, "Operation not applicable to"},
218 {TD_NOTSD
, "No thread specific data for this thread"},
219 {TD_MALLOC
, "Malloc failed"},
220 {TD_PARTIALREG
, "Only part of register set was writen/read"},
221 {TD_NOXREGS
, "X register set not available for given thread"}
223 const int td_err_size
= sizeof td_err_table
/ sizeof (struct string_map
);
227 for (i
= 0; i
< td_err_size
; i
++)
228 if (td_err_table
[i
].num
== errcode
)
229 return td_err_table
[i
].str
;
231 sprintf (buf
, "Unknown thread_db error code: %d", errcode
);
240 td_state_string - Convert a thread_db state code to a string
244 char * td_state_string (statecode)
248 Return the thread_db state string associated with statecode. If
249 statecode is unknown, then return a message.
254 td_state_string (td_thr_state_e statecode
)
256 static struct string_map
257 td_thr_state_table
[] =
259 {TD_THR_ANY_STATE
, "any state"},
260 {TD_THR_UNKNOWN
, "unknown"},
261 {TD_THR_STOPPED
, "stopped"},
263 {TD_THR_ACTIVE
, "active"},
264 {TD_THR_ZOMBIE
, "zombie"},
265 {TD_THR_SLEEP
, "sleep"},
266 {TD_THR_STOPPED_ASLEEP
, "stopped asleep"}
268 const int td_thr_state_table_size
= sizeof td_thr_state_table
/ sizeof (struct string_map
);
272 for (i
= 0; i
< td_thr_state_table_size
; i
++)
273 if (td_thr_state_table
[i
].num
== statecode
)
274 return td_thr_state_table
[i
].str
;
276 sprintf (buf
, "Unknown thread_db state code: %d", statecode
);
285 thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id.
289 int thread_to_lwp (thread_id, default_lwp)
293 This function converts a Posix or Solaris thread id to a lightweight
294 process id. If thread_id is non-existent, that's an error. If it's
295 an inactive thread, then we return default_lwp.
299 This function probably shouldn't call error()...
304 thread_to_lwp (int thread_id
, int default_lwp
)
310 if (is_lwp (thread_id
))
311 return thread_id
; /* It's already an LWP id */
313 /* It's a thread. Convert to lwp */
315 val
= p_td_ta_map_id2thr (main_ta
, GET_THREAD (thread_id
), &th
);
317 return -1; /* thread must have terminated */
318 else if (val
!= TD_OK
)
319 error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val
));
321 val
= p_td_thr_get_info (&th
, &ti
);
323 return -1; /* thread must have terminated */
324 else if (val
!= TD_OK
)
325 error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val
));
327 if (ti
.ti_state
!= TD_THR_ACTIVE
)
329 if (default_lwp
!= -1)
331 error ("thread_to_lwp: thread state not active: %s",
332 td_state_string (ti
.ti_state
));
335 return BUILD_LWP (ti
.ti_lid
, PIDGET (thread_id
));
342 lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id.
346 int lwp_to_thread (lwp_id)
350 This function converts a lightweight process id to a Posix or Solaris
351 thread id. If thread_id is non-existent, that's an error.
355 This function probably shouldn't call error()...
360 lwp_to_thread (int lwp
)
367 return lwp
; /* It's already a thread id */
369 /* It's an lwp. Convert it to a thread id. */
371 if (!sol_thread_alive (lwp
))
372 return -1; /* defunct lwp */
374 val
= p_td_ta_map_lwp2thr (main_ta
, GET_LWP (lwp
), &th
);
376 return -1; /* thread must have terminated */
377 else if (val
!= TD_OK
)
378 error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val
));
380 val
= p_td_thr_validate (&th
);
382 return lwp
; /* libthread doesn't know about it;
384 else if (val
!= TD_OK
)
385 error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val
));
387 val
= p_td_thr_get_info (&th
, &ti
);
389 return -1; /* thread must have terminated */
390 else if (val
!= TD_OK
)
391 error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val
));
393 return BUILD_THREAD (ti
.ti_tid
, PIDGET (lwp
));
400 save_inferior_pid - Save inferior_pid on the cleanup list
401 restore_inferior_pid - Restore inferior_pid from the cleanup list
405 struct cleanup *save_inferior_pid ()
406 void restore_inferior_pid (int pid)
410 These two functions act in unison to restore inferior_pid in
415 inferior_pid is a global variable that needs to be changed by many of
416 these routines before calling functions in procfs.c. In order to
417 guarantee that inferior_pid gets restored (in case of errors), you
418 need to call save_inferior_pid before changing it. At the end of the
419 function, you should invoke do_cleanups to restore it.
424 static struct cleanup
*
425 save_inferior_pid (void)
427 return make_cleanup (restore_inferior_pid
, (void *) inferior_pid
);
431 restore_inferior_pid (void *pid
)
433 inferior_pid
= (int) pid
;
437 /* Most target vector functions from here on actually just pass through to
438 procfs.c, as they don't need to do anything specific for threads. */
443 sol_thread_open (char *arg
, int from_tty
)
445 procfs_ops
.to_open (arg
, from_tty
);
448 /* Attach to process PID, then initialize for debugging it
449 and wait for the trace-trap that results from attaching. */
452 sol_thread_attach (char *args
, int from_tty
)
454 procfs_ops
.to_attach (args
, from_tty
);
456 /* Must get symbols from solibs before libthread_db can run! */
457 SOLIB_ADD ((char *) 0, from_tty
, (struct target_ops
*) 0);
459 if (sol_thread_active
)
461 printf_filtered ("sol-thread active.\n");
462 main_ph
.pid
= inferior_pid
; /* Save for xfer_memory */
463 push_target (&sol_thread_ops
);
464 inferior_pid
= lwp_to_thread (inferior_pid
);
465 if (inferior_pid
== -1)
466 inferior_pid
= main_ph
.pid
;
468 add_thread (inferior_pid
);
470 /* XXX - might want to iterate over all the threads and register them. */
473 /* Take a program previously attached to and detaches it.
474 The program resumes execution and will no longer stop
475 on signals, etc. We'd better not have left any breakpoints
476 in the program or it'll die when it hits one. For this
477 to work, it may be necessary for the process to have been
478 previously attached. It *might* work if the program was
479 started via the normal ptrace (PTRACE_TRACEME). */
482 sol_thread_detach (char *args
, int from_tty
)
484 inferior_pid
= PIDGET (main_ph
.pid
);
485 unpush_target (&sol_thread_ops
);
486 procfs_ops
.to_detach (args
, from_tty
);
489 /* Resume execution of process PID. If STEP is nozero, then
490 just single step it. If SIGNAL is nonzero, restart it with that
491 signal activated. We may have to convert pid from a thread-id to an LWP id
495 sol_thread_resume (int pid
, int step
, enum target_signal signo
)
497 struct cleanup
*old_chain
;
499 old_chain
= save_inferior_pid ();
501 inferior_pid
= thread_to_lwp (inferior_pid
, main_ph
.pid
);
502 if (inferior_pid
== -1)
503 inferior_pid
= procfs_first_available ();
509 pid
= thread_to_lwp (pid
, -2);
510 if (pid
== -2) /* Inactive thread */
511 error ("This version of Solaris can't start inactive threads.");
512 if (info_verbose
&& pid
== -1)
513 warning ("Specified thread %d seems to have terminated",
514 GET_THREAD (save_pid
));
517 procfs_ops
.to_resume (pid
, step
, signo
);
519 do_cleanups (old_chain
);
522 /* Wait for any threads to stop. We may have to convert PID from a thread id
523 to a LWP id, and vice versa on the way out. */
526 sol_thread_wait (int pid
, struct target_waitstatus
*ourstatus
)
530 struct cleanup
*old_chain
;
532 save_pid
= inferior_pid
;
533 old_chain
= save_inferior_pid ();
535 inferior_pid
= thread_to_lwp (inferior_pid
, main_ph
.pid
);
536 if (inferior_pid
== -1)
537 inferior_pid
= procfs_first_available ();
543 pid
= thread_to_lwp (pid
, -2);
544 if (pid
== -2) /* Inactive thread */
545 error ("This version of Solaris can't start inactive threads.");
546 if (info_verbose
&& pid
== -1)
547 warning ("Specified thread %d seems to have terminated",
548 GET_THREAD (save_pid
));
551 rtnval
= procfs_ops
.to_wait (pid
, ourstatus
);
553 if (ourstatus
->kind
!= TARGET_WAITKIND_EXITED
)
555 /* Map the LWP of interest back to the appropriate thread ID */
556 rtnval
= lwp_to_thread (rtnval
);
560 /* See if we have a new thread */
561 if (is_thread (rtnval
)
562 && rtnval
!= save_pid
563 && !in_thread_list (rtnval
))
565 printf_filtered ("[New %s]\n", target_pid_to_str (rtnval
));
570 /* During process initialization, we may get here without the thread package
571 being initialized, since that can only happen after we've found the shared
574 do_cleanups (old_chain
);
580 sol_thread_fetch_registers (int regno
)
583 td_thrhandle_t thandle
;
586 prfpregset_t fpregset
;
592 if (!is_thread (inferior_pid
))
593 { /* LWP: pass the request on to procfs.c */
594 if (target_has_execution
)
595 procfs_ops
.to_fetch_registers (regno
);
597 orig_core_ops
.to_fetch_registers (regno
);
601 /* Solaris thread: convert inferior_pid into a td_thrhandle_t */
603 thread
= GET_THREAD (inferior_pid
);
606 error ("sol_thread_fetch_registers: thread == 0");
608 val
= p_td_ta_map_id2thr (main_ta
, thread
, &thandle
);
610 error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s",
611 td_err_string (val
));
613 /* Get the integer regs */
615 val
= p_td_thr_getgregs (&thandle
, gregset
);
617 && val
!= TD_PARTIALREG
)
618 error ("sol_thread_fetch_registers: td_thr_getgregs %s",
619 td_err_string (val
));
621 /* For the sparc, TD_PARTIALREG means that only i0->i7, l0->l7, pc and sp
622 are saved (by a thread context switch). */
624 /* And, now the fp regs */
626 val
= p_td_thr_getfpregs (&thandle
, &fpregset
);
628 && val
!= TD_NOFPREGS
)
629 error ("sol_thread_fetch_registers: td_thr_getfpregs %s",
630 td_err_string (val
));
632 /* Note that we must call supply_{g fp}regset *after* calling the td routines
633 because the td routines call ps_lget* which affect the values stored in the
636 supply_gregset ((gdb_gregset_t
*) &gregset
);
637 supply_fpregset ((gdb_fpregset_t
*) &fpregset
);
640 /* thread_db doesn't seem to handle this right */
641 val
= td_thr_getxregsize (&thandle
, &xregsize
);
642 if (val
!= TD_OK
&& val
!= TD_NOXREGS
)
643 error ("sol_thread_fetch_registers: td_thr_getxregsize %s",
644 td_err_string (val
));
648 xregset
= alloca (xregsize
);
649 val
= td_thr_getxregs (&thandle
, xregset
);
651 error ("sol_thread_fetch_registers: td_thr_getxregs %s",
652 td_err_string (val
));
658 sol_thread_store_registers (int regno
)
661 td_thrhandle_t thandle
;
664 prfpregset_t fpregset
;
670 if (!is_thread (inferior_pid
))
671 { /* LWP: pass the request on to procfs.c */
672 procfs_ops
.to_store_registers (regno
);
676 /* Solaris thread: convert inferior_pid into a td_thrhandle_t */
678 thread
= GET_THREAD (inferior_pid
);
680 val
= p_td_ta_map_id2thr (main_ta
, thread
, &thandle
);
682 error ("sol_thread_store_registers: td_ta_map_id2thr %s",
683 td_err_string (val
));
686 { /* Not writing all the regs */
687 /* save new register value */
688 char old_value
[REGISTER_SIZE
];
689 memcpy (old_value
, ®isters
[REGISTER_BYTE (regno
)], REGISTER_SIZE
);
691 val
= p_td_thr_getgregs (&thandle
, gregset
);
693 error ("sol_thread_store_registers: td_thr_getgregs %s",
694 td_err_string (val
));
695 val
= p_td_thr_getfpregs (&thandle
, &fpregset
);
697 error ("sol_thread_store_registers: td_thr_getfpregs %s",
698 td_err_string (val
));
700 /* restore new register value */
701 memcpy (®isters
[REGISTER_BYTE (regno
)], old_value
, REGISTER_SIZE
);
704 /* thread_db doesn't seem to handle this right */
705 val
= td_thr_getxregsize (&thandle
, &xregsize
);
706 if (val
!= TD_OK
&& val
!= TD_NOXREGS
)
707 error ("sol_thread_store_registers: td_thr_getxregsize %s",
708 td_err_string (val
));
712 xregset
= alloca (xregsize
);
713 val
= td_thr_getxregs (&thandle
, xregset
);
715 error ("sol_thread_store_registers: td_thr_getxregs %s",
716 td_err_string (val
));
721 fill_gregset ((gdb_gregset_t
*) &gregset
, regno
);
722 fill_fpregset ((gdb_fpregset_t
*) &fpregset
, regno
);
724 val
= p_td_thr_setgregs (&thandle
, gregset
);
726 error ("sol_thread_store_registers: td_thr_setgregs %s",
727 td_err_string (val
));
728 val
= p_td_thr_setfpregs (&thandle
, &fpregset
);
730 error ("sol_thread_store_registers: td_thr_setfpregs %s",
731 td_err_string (val
));
734 /* thread_db doesn't seem to handle this right */
735 val
= td_thr_getxregsize (&thandle
, &xregsize
);
736 if (val
!= TD_OK
&& val
!= TD_NOXREGS
)
737 error ("sol_thread_store_registers: td_thr_getxregsize %s",
738 td_err_string (val
));
740 /* Should probably do something about writing the xregs here, but what are
745 /* Get ready to modify the registers array. On machines which store
746 individual registers, this doesn't need to do anything. On machines
747 which store all the registers in one fell swoop, this makes sure
748 that registers contains all the registers from the program being
752 sol_thread_prepare_to_store (void)
754 procfs_ops
.to_prepare_to_store ();
758 sol_thread_xfer_memory (memaddr
, myaddr
, len
, dowrite
, target
)
763 struct target_ops
*target
; /* ignored */
766 struct cleanup
*old_chain
;
768 old_chain
= save_inferior_pid ();
770 if (is_thread (inferior_pid
) || /* A thread */
771 !target_thread_alive (inferior_pid
)) /* An lwp, but not alive */
772 inferior_pid
= procfs_first_available (); /* Find any live lwp. */
773 /* Note: don't need to call switch_to_thread; we're just reading memory. */
775 if (target_has_execution
)
776 retval
= procfs_ops
.to_xfer_memory (memaddr
, myaddr
, len
, dowrite
, target
);
778 retval
= orig_core_ops
.to_xfer_memory (memaddr
, myaddr
, len
,
781 do_cleanups (old_chain
);
786 /* Print status information about what we're accessing. */
789 sol_thread_files_info (struct target_ops
*ignore
)
791 procfs_ops
.to_files_info (ignore
);
795 sol_thread_kill_inferior (void)
797 procfs_ops
.to_kill ();
801 sol_thread_notice_signals (int pid
)
803 procfs_ops
.to_notice_signals (PIDGET (pid
));
806 /* Fork an inferior process, and start debugging it with /proc. */
809 sol_thread_create_inferior (char *exec_file
, char *allargs
, char **env
)
811 procfs_ops
.to_create_inferior (exec_file
, allargs
, env
);
813 if (sol_thread_active
&& inferior_pid
!= 0)
815 main_ph
.pid
= inferior_pid
; /* Save for xfer_memory */
817 push_target (&sol_thread_ops
);
819 inferior_pid
= lwp_to_thread (inferior_pid
);
820 if (inferior_pid
== -1)
821 inferior_pid
= main_ph
.pid
;
823 if (!in_thread_list (inferior_pid
))
824 add_thread (inferior_pid
);
828 /* This routine is called whenever a new symbol table is read in, or when all
829 symbol tables are removed. libthread_db can only be initialized when it
830 finds the right variables in libthread.so. Since it's a shared library,
831 those variables don't show up until the library gets mapped and the symbol
834 /* This new_objfile event is now managed by a chained function pointer.
835 * It is the callee's responsability to call the next client on the chain.
838 /* Saved pointer to previous owner of the new_objfile event. */
839 static void (*target_new_objfile_chain
) (struct objfile
*);
842 sol_thread_new_objfile (struct objfile
*objfile
)
848 sol_thread_active
= 0;
852 /* don't do anything if init failed to resolve the libthread_db library */
853 if (!procfs_suppress_run
)
856 /* Now, initialize the thread debugging library. This needs to be done after
857 the shared libraries are located because it needs information from the
858 user's thread library. */
863 warning ("sol_thread_new_objfile: td_init: %s", td_err_string (val
));
867 val
= p_td_ta_new (&main_ph
, &main_ta
);
868 if (val
== TD_NOLIBTHREAD
)
870 else if (val
!= TD_OK
)
872 warning ("sol_thread_new_objfile: td_ta_new: %s", td_err_string (val
));
876 sol_thread_active
= 1;
878 /* Call predecessor on chain, if any. */
879 if (target_new_objfile_chain
)
880 target_new_objfile_chain (objfile
);
883 /* Clean up after the inferior dies. */
886 sol_thread_mourn_inferior (void)
888 unpush_target (&sol_thread_ops
);
889 procfs_ops
.to_mourn_inferior ();
892 /* Mark our target-struct as eligible for stray "run" and "attach" commands. */
895 sol_thread_can_run (void)
897 return procfs_suppress_run
;
904 sol_thread_alive - test thread for "aliveness"
908 static bool sol_thread_alive (int pid);
912 returns true if thread still active in inferior.
917 sol_thread_alive (int pid
)
919 if (is_thread (pid
)) /* non-kernel thread */
924 pid
= GET_THREAD (pid
);
925 if ((val
= p_td_ta_map_id2thr (main_ta
, pid
, &th
)) != TD_OK
)
926 return 0; /* thread not found */
927 if ((val
= p_td_thr_validate (&th
)) != TD_OK
)
928 return 0; /* thread not valid */
929 return 1; /* known thread: return true */
932 /* kernel thread (LWP): let procfs test it */
934 if (target_has_execution
)
935 return procfs_ops
.to_thread_alive (pid
);
937 return orig_core_ops
.to_thread_alive (pid
);
942 sol_thread_stop (void)
944 procfs_ops
.to_stop ();
947 /* These routines implement the lower half of the thread_db interface. Ie: the
950 /* Various versions of <proc_service.h> have slightly
951 different function prototypes. In particular, we have
954 struct ps_prochandle * const struct ps_prochandle *
959 Which one you have depends on solaris version and what
960 patches you've applied. On the theory that there are
961 only two major variants, we have configure check the
962 prototype of ps_pdwrite (), and use that info to make
963 appropriate typedefs here. */
965 #ifdef PROC_SERVICE_IS_OLD
966 typedef const struct ps_prochandle
*gdb_ps_prochandle_t
;
967 typedef char *gdb_ps_read_buf_t
;
968 typedef char *gdb_ps_write_buf_t
;
969 typedef int gdb_ps_size_t
;
970 typedef paddr_t gdb_ps_addr_t
;
972 typedef struct ps_prochandle
*gdb_ps_prochandle_t
;
973 typedef void *gdb_ps_read_buf_t
;
974 typedef const void *gdb_ps_write_buf_t
;
975 typedef size_t gdb_ps_size_t
;
976 typedef psaddr_t gdb_ps_addr_t
;
980 /* The next four routines are called by thread_db to tell us to stop and stop
981 a particular process or lwp. Since GDB ensures that these are all stopped
982 by the time we call anything in thread_db, these routines need to do
988 ps_pstop (gdb_ps_prochandle_t ph
)
993 /* Process continue */
996 ps_pcontinue (gdb_ps_prochandle_t ph
)
1004 ps_lstop (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
1012 ps_lcontinue (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
1017 /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */
1020 ps_pglobal_lookup (gdb_ps_prochandle_t ph
, const char *ld_object_name
,
1021 const char *ld_symbol_name
, gdb_ps_addr_t
* ld_symbol_addr
)
1023 struct minimal_symbol
*ms
;
1025 ms
= lookup_minimal_symbol (ld_symbol_name
, NULL
, NULL
);
1030 *ld_symbol_addr
= SYMBOL_VALUE_ADDRESS (ms
);
1035 /* Common routine for reading and writing memory. */
1038 rw_common (int dowrite
, const struct ps_prochandle
*ph
, gdb_ps_addr_t addr
,
1039 char *buf
, int size
)
1041 struct cleanup
*old_chain
;
1043 old_chain
= save_inferior_pid ();
1045 if (is_thread (inferior_pid
) || /* A thread */
1046 !target_thread_alive (inferior_pid
)) /* An lwp, but not alive */
1047 inferior_pid
= procfs_first_available (); /* Find any live lwp. */
1048 /* Note: don't need to call switch_to_thread; we're just reading memory. */
1050 #if defined (__sparcv9)
1051 /* For Sparc64 cross Sparc32, make sure the address has not been
1052 accidentally sign-extended (or whatever) to beyond 32 bits. */
1053 if (bfd_get_arch_size (exec_bfd
) == 32)
1061 if (target_has_execution
)
1062 cc
= procfs_ops
.to_xfer_memory (addr
, buf
, size
, dowrite
, &procfs_ops
);
1064 cc
= orig_core_ops
.to_xfer_memory (addr
, buf
, size
, dowrite
, &core_ops
);
1069 print_sys_errmsg ("rw_common (): read", errno
);
1071 print_sys_errmsg ("rw_common (): write", errno
);
1073 do_cleanups (old_chain
);
1080 warning ("rw_common (): unable to read at addr 0x%lx",
1083 warning ("rw_common (): unable to write at addr 0x%lx",
1086 do_cleanups (old_chain
);
1095 do_cleanups (old_chain
);
1100 /* Copies SIZE bytes from target process .data segment to debugger memory. */
1103 ps_pdread (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1104 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
1106 return rw_common (0, ph
, addr
, buf
, size
);
1109 /* Copies SIZE bytes from debugger memory .data segment to target process. */
1112 ps_pdwrite (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1113 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
1115 return rw_common (1, ph
, addr
, (char *) buf
, size
);
1118 /* Copies SIZE bytes from target process .text segment to debugger memory. */
1121 ps_ptread (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1122 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
1124 return rw_common (0, ph
, addr
, buf
, size
);
1127 /* Copies SIZE bytes from debugger memory .text segment to target process. */
1130 ps_ptwrite (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1131 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
1133 return rw_common (1, ph
, addr
, (char *) buf
, size
);
1136 /* Get integer regs for LWP */
1139 ps_lgetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1140 prgregset_t gregset
)
1142 struct cleanup
*old_chain
;
1144 old_chain
= save_inferior_pid ();
1146 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1148 if (target_has_execution
)
1149 procfs_ops
.to_fetch_registers (-1);
1151 orig_core_ops
.to_fetch_registers (-1);
1152 fill_gregset ((gdb_gregset_t
*) gregset
, -1);
1154 do_cleanups (old_chain
);
1159 /* Set integer regs for LWP */
1162 ps_lsetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1163 const prgregset_t gregset
)
1165 struct cleanup
*old_chain
;
1167 old_chain
= save_inferior_pid ();
1169 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1171 supply_gregset ((gdb_gregset_t
*) gregset
);
1172 if (target_has_execution
)
1173 procfs_ops
.to_store_registers (-1);
1175 orig_core_ops
.to_store_registers (-1);
1177 do_cleanups (old_chain
);
1182 /* Log a message (sends to gdb_stderr). */
1185 ps_plog (const char *fmt
,...)
1189 va_start (args
, fmt
);
1191 vfprintf_filtered (gdb_stderr
, fmt
, args
);
1194 /* Get size of extra register set. Currently a noop. */
1197 ps_lgetxregsize (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, int *xregsize
)
1204 val
= get_lwp_fd (ph
, lwpid
, &lwp_fd
);
1208 if (ioctl (lwp_fd
, PIOCGXREGSIZE
, ®size
))
1210 if (errno
== EINVAL
)
1211 return PS_NOFREGS
; /* XXX Wrong code, but this is the closest
1212 thing in proc_service.h */
1214 print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno
);
1222 /* Get extra register set. Currently a noop. */
1225 ps_lgetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
1231 val
= get_lwp_fd (ph
, lwpid
, &lwp_fd
);
1235 if (ioctl (lwp_fd
, PIOCGXREG
, xregset
))
1237 print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno
);
1245 /* Set extra register set. Currently a noop. */
1248 ps_lsetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
1254 val
= get_lwp_fd (ph
, lwpid
, &lwp_fd
);
1258 if (ioctl (lwp_fd
, PIOCSXREG
, xregset
))
1260 print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno
);
1268 /* Get floating-point regs for LWP */
1271 ps_lgetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1272 prfpregset_t
* fpregset
)
1274 struct cleanup
*old_chain
;
1276 old_chain
= save_inferior_pid ();
1278 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1280 if (target_has_execution
)
1281 procfs_ops
.to_fetch_registers (-1);
1283 orig_core_ops
.to_fetch_registers (-1);
1284 fill_fpregset ((gdb_fpregset_t
*) fpregset
, -1);
1286 do_cleanups (old_chain
);
1291 /* Set floating-point regs for LWP */
1294 ps_lsetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1295 const prfpregset_t
* fpregset
)
1297 struct cleanup
*old_chain
;
1299 old_chain
= save_inferior_pid ();
1301 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1303 supply_fpregset ((gdb_fpregset_t
*) fpregset
);
1304 if (target_has_execution
)
1305 procfs_ops
.to_store_registers (-1);
1307 orig_core_ops
.to_store_registers (-1);
1309 do_cleanups (old_chain
);
1314 #ifdef PR_MODEL_LP64
1315 /* Identify process as 32-bit or 64-bit.
1316 At the moment I'm using bfd to do this.
1317 There might be a more solaris-specific (eg. procfs) method,
1318 but this ought to work. */
1321 ps_pdmodel (gdb_ps_prochandle_t ph
, int *data_model
)
1324 *data_model
= PR_MODEL_UNKNOWN
;
1325 else if (bfd_get_arch_size (exec_bfd
) == 32)
1326 *data_model
= PR_MODEL_ILP32
;
1328 *data_model
= PR_MODEL_LP64
;
1332 #endif /* PR_MODEL_LP64 */
1334 #ifdef TM_I386SOL2_H
1336 /* Reads the local descriptor table of a LWP. */
1339 ps_lgetLDT (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1342 /* NOTE: only used on Solaris, therefore OK to refer to procfs.c */
1343 extern struct ssd
*procfs_find_LDT_entry (int);
1346 /* FIXME: can't I get the process ID from the prochandle or something?
1349 if (inferior_pid
<= 0 || lwpid
<= 0)
1352 ret
= procfs_find_LDT_entry (BUILD_LWP (lwpid
, PIDGET (inferior_pid
)));
1355 memcpy (pldt
, ret
, sizeof (struct ssd
));
1358 else /* LDT not found. */
1361 #endif /* TM_I386SOL2_H */
1363 /* Convert a pid to printable form. */
1366 solaris_pid_to_str (int pid
)
1368 static char buf
[100];
1370 /* in case init failed to resolve the libthread_db library */
1371 if (!procfs_suppress_run
)
1372 return procfs_pid_to_str (pid
);
1374 if (is_thread (pid
))
1378 lwp
= thread_to_lwp (pid
, -2);
1381 sprintf (buf
, "Thread %d (defunct)", GET_THREAD (pid
));
1383 sprintf (buf
, "Thread %d (LWP %d)", GET_THREAD (pid
), GET_LWP (lwp
));
1385 sprintf (buf
, "Thread %d ", GET_THREAD (pid
));
1387 else if (GET_LWP (pid
) != 0)
1388 sprintf (buf
, "LWP %d ", GET_LWP (pid
));
1390 sprintf (buf
, "process %d ", PIDGET (pid
));
1396 /* Worker bee for find_new_threads
1397 Callback function that gets called once per USER thread (i.e., not
1401 sol_find_new_threads_callback (const td_thrhandle_t
*th
, void *ignored
)
1407 if ((retval
= p_td_thr_get_info (th
, &ti
)) != TD_OK
)
1411 pid
= BUILD_THREAD (ti
.ti_tid
, PIDGET (inferior_pid
));
1412 if (!in_thread_list (pid
))
1419 sol_find_new_threads (void)
1421 /* don't do anything if init failed to resolve the libthread_db library */
1422 if (!procfs_suppress_run
)
1425 if (inferior_pid
== -1)
1427 printf_filtered ("No process.\n");
1430 procfs_find_new_threads (); /* first find new kernel threads. */
1431 p_td_ta_thr_iter (main_ta
, sol_find_new_threads_callback
, (void *) 0,
1432 TD_THR_ANY_STATE
, TD_THR_LOWEST_PRIORITY
,
1433 TD_SIGNO_MASK
, TD_THR_ANY_USER_FLAGS
);
1437 sol_core_open (char *filename
, int from_tty
)
1439 orig_core_ops
.to_open (filename
, from_tty
);
1443 sol_core_close (int quitting
)
1445 orig_core_ops
.to_close (quitting
);
1449 sol_core_detach (char *args
, int from_tty
)
1451 unpush_target (&core_ops
);
1452 orig_core_ops
.to_detach (args
, from_tty
);
1456 sol_core_files_info (struct target_ops
*t
)
1458 orig_core_ops
.to_files_info (t
);
1461 /* Worker bee for info sol-thread command. This is a callback function that
1462 gets called once for each Solaris thread (ie. not kernel thread) in the
1463 inferior. Print anything interesting that we can think of. */
1466 info_cb (const td_thrhandle_t
*th
, void *s
)
1471 if ((ret
= p_td_thr_get_info (th
, &ti
)) == TD_OK
)
1473 printf_filtered ("%s thread #%d, lwp %d, ",
1474 ti
.ti_type
== TD_THR_SYSTEM
? "system" : "user ",
1475 ti
.ti_tid
, ti
.ti_lid
);
1476 switch (ti
.ti_state
)
1479 case TD_THR_UNKNOWN
:
1480 printf_filtered ("<unknown state>");
1482 case TD_THR_STOPPED
:
1483 printf_filtered ("(stopped)");
1486 printf_filtered ("(run) ");
1489 printf_filtered ("(active) ");
1492 printf_filtered ("(zombie) ");
1495 printf_filtered ("(asleep) ");
1497 case TD_THR_STOPPED_ASLEEP
:
1498 printf_filtered ("(stopped asleep)");
1501 /* Print thr_create start function: */
1502 if (ti
.ti_startfunc
!= 0)
1504 struct minimal_symbol
*msym
;
1505 msym
= lookup_minimal_symbol_by_pc (ti
.ti_startfunc
);
1507 printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym
));
1509 printf_filtered (" startfunc: 0x%s\n", paddr (ti
.ti_startfunc
));
1512 /* If thread is asleep, print function that went to sleep: */
1513 if (ti
.ti_state
== TD_THR_SLEEP
)
1515 struct minimal_symbol
*msym
;
1516 msym
= lookup_minimal_symbol_by_pc (ti
.ti_pc
);
1518 printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym
));
1520 printf_filtered (" - Sleep func: 0x%s\n", paddr (ti
.ti_startfunc
));
1523 /* Wrap up line, if necessary */
1524 if (ti
.ti_state
!= TD_THR_SLEEP
&& ti
.ti_startfunc
== 0)
1525 printf_filtered ("\n"); /* don't you hate counting newlines? */
1528 warning ("info sol-thread: failed to get info for thread.");
1533 /* List some state about each Solaris user thread in the inferior. */
1536 info_solthreads (char *args
, int from_tty
)
1538 p_td_ta_thr_iter (main_ta
, info_cb
, args
,
1539 TD_THR_ANY_STATE
, TD_THR_LOWEST_PRIORITY
,
1540 TD_SIGNO_MASK
, TD_THR_ANY_USER_FLAGS
);
1544 ignore (CORE_ADDR addr
, char *contents
)
1551 init_sol_thread_ops (void)
1553 sol_thread_ops
.to_shortname
= "solaris-threads";
1554 sol_thread_ops
.to_longname
= "Solaris threads and pthread.";
1555 sol_thread_ops
.to_doc
= "Solaris threads and pthread support.";
1556 sol_thread_ops
.to_open
= sol_thread_open
;
1557 sol_thread_ops
.to_close
= 0;
1558 sol_thread_ops
.to_attach
= sol_thread_attach
;
1559 sol_thread_ops
.to_detach
= sol_thread_detach
;
1560 sol_thread_ops
.to_resume
= sol_thread_resume
;
1561 sol_thread_ops
.to_wait
= sol_thread_wait
;
1562 sol_thread_ops
.to_fetch_registers
= sol_thread_fetch_registers
;
1563 sol_thread_ops
.to_store_registers
= sol_thread_store_registers
;
1564 sol_thread_ops
.to_prepare_to_store
= sol_thread_prepare_to_store
;
1565 sol_thread_ops
.to_xfer_memory
= sol_thread_xfer_memory
;
1566 sol_thread_ops
.to_files_info
= sol_thread_files_info
;
1567 sol_thread_ops
.to_insert_breakpoint
= memory_insert_breakpoint
;
1568 sol_thread_ops
.to_remove_breakpoint
= memory_remove_breakpoint
;
1569 sol_thread_ops
.to_terminal_init
= terminal_init_inferior
;
1570 sol_thread_ops
.to_terminal_inferior
= terminal_inferior
;
1571 sol_thread_ops
.to_terminal_ours_for_output
= terminal_ours_for_output
;
1572 sol_thread_ops
.to_terminal_ours
= terminal_ours
;
1573 sol_thread_ops
.to_terminal_info
= child_terminal_info
;
1574 sol_thread_ops
.to_kill
= sol_thread_kill_inferior
;
1575 sol_thread_ops
.to_load
= 0;
1576 sol_thread_ops
.to_lookup_symbol
= 0;
1577 sol_thread_ops
.to_create_inferior
= sol_thread_create_inferior
;
1578 sol_thread_ops
.to_mourn_inferior
= sol_thread_mourn_inferior
;
1579 sol_thread_ops
.to_can_run
= sol_thread_can_run
;
1580 sol_thread_ops
.to_notice_signals
= sol_thread_notice_signals
;
1581 sol_thread_ops
.to_thread_alive
= sol_thread_alive
;
1582 sol_thread_ops
.to_pid_to_str
= solaris_pid_to_str
;
1583 sol_thread_ops
.to_find_new_threads
= sol_find_new_threads
;
1584 sol_thread_ops
.to_stop
= sol_thread_stop
;
1585 sol_thread_ops
.to_stratum
= process_stratum
;
1586 sol_thread_ops
.to_has_all_memory
= 1;
1587 sol_thread_ops
.to_has_memory
= 1;
1588 sol_thread_ops
.to_has_stack
= 1;
1589 sol_thread_ops
.to_has_registers
= 1;
1590 sol_thread_ops
.to_has_execution
= 1;
1591 sol_thread_ops
.to_has_thread_control
= tc_none
;
1592 sol_thread_ops
.to_sections
= 0;
1593 sol_thread_ops
.to_sections_end
= 0;
1594 sol_thread_ops
.to_magic
= OPS_MAGIC
;
1599 init_sol_core_ops (void)
1601 sol_core_ops
.to_shortname
= "solaris-core";
1602 sol_core_ops
.to_longname
= "Solaris core threads and pthread.";
1603 sol_core_ops
.to_doc
= "Solaris threads and pthread support for core files.";
1604 sol_core_ops
.to_open
= sol_core_open
;
1605 sol_core_ops
.to_close
= sol_core_close
;
1606 sol_core_ops
.to_attach
= sol_thread_attach
;
1607 sol_core_ops
.to_detach
= sol_core_detach
;
1608 /* sol_core_ops.to_resume = 0; */
1609 /* sol_core_ops.to_wait = 0; */
1610 sol_core_ops
.to_fetch_registers
= sol_thread_fetch_registers
;
1611 /* sol_core_ops.to_store_registers = 0; */
1612 /* sol_core_ops.to_prepare_to_store = 0; */
1613 sol_core_ops
.to_xfer_memory
= sol_thread_xfer_memory
;
1614 sol_core_ops
.to_files_info
= sol_core_files_info
;
1615 sol_core_ops
.to_insert_breakpoint
= ignore
;
1616 sol_core_ops
.to_remove_breakpoint
= ignore
;
1617 /* sol_core_ops.to_terminal_init = 0; */
1618 /* sol_core_ops.to_terminal_inferior = 0; */
1619 /* sol_core_ops.to_terminal_ours_for_output = 0; */
1620 /* sol_core_ops.to_terminal_ours = 0; */
1621 /* sol_core_ops.to_terminal_info = 0; */
1622 /* sol_core_ops.to_kill = 0; */
1623 /* sol_core_ops.to_load = 0; */
1624 /* sol_core_ops.to_lookup_symbol = 0; */
1625 sol_core_ops
.to_create_inferior
= sol_thread_create_inferior
;
1626 sol_core_ops
.to_stratum
= core_stratum
;
1627 sol_core_ops
.to_has_all_memory
= 0;
1628 sol_core_ops
.to_has_memory
= 1;
1629 sol_core_ops
.to_has_stack
= 1;
1630 sol_core_ops
.to_has_registers
= 1;
1631 sol_core_ops
.to_has_execution
= 0;
1632 sol_core_ops
.to_has_thread_control
= tc_none
;
1633 sol_core_ops
.to_thread_alive
= sol_thread_alive
;
1634 sol_core_ops
.to_pid_to_str
= solaris_pid_to_str
;
1635 /* On Solaris/x86, when debugging a threaded core file from process <n>,
1636 the following causes "info threads" to produce "procfs: couldn't find pid
1637 <n> in procinfo list" where <n> is the pid of the process that produced
1638 the core file. Disable it for now. */
1639 /* sol_core_ops.to_find_new_threads = sol_find_new_threads; */
1640 sol_core_ops
.to_sections
= 0;
1641 sol_core_ops
.to_sections_end
= 0;
1642 sol_core_ops
.to_magic
= OPS_MAGIC
;
1645 /* we suppress the call to add_target of core_ops in corelow because
1646 if there are two targets in the stratum core_stratum, find_core_target
1647 won't know which one to return. see corelow.c for an additonal
1648 comment on coreops_suppress_target. */
1649 int coreops_suppress_target
= 1;
1652 _initialize_sol_thread (void)
1656 init_sol_thread_ops ();
1657 init_sol_core_ops ();
1659 dlhandle
= dlopen ("libthread_db.so.1", RTLD_NOW
);
1663 #define resolve(X) \
1664 if (!(p_##X = dlsym (dlhandle, #X))) \
1668 resolve (td_ta_new
);
1669 resolve (td_ta_delete
);
1671 resolve (td_ta_get_ph
);
1672 resolve (td_ta_get_nthreads
);
1673 resolve (td_ta_tsd_iter
);
1674 resolve (td_ta_thr_iter
);
1675 resolve (td_thr_validate
);
1676 resolve (td_thr_tsd
);
1677 resolve (td_thr_get_info
);
1678 resolve (td_thr_getfpregs
);
1679 resolve (td_thr_getxregsize
);
1680 resolve (td_thr_getxregs
);
1681 resolve (td_thr_sigsetmask
);
1682 resolve (td_thr_setprio
);
1683 resolve (td_thr_setsigpending
);
1684 resolve (td_thr_setfpregs
);
1685 resolve (td_thr_setxregs
);
1686 resolve (td_ta_map_id2thr
);
1687 resolve (td_ta_map_lwp2thr
);
1688 resolve (td_thr_getgregs
);
1689 resolve (td_thr_setgregs
);
1691 add_target (&sol_thread_ops
);
1693 procfs_suppress_run
= 1;
1695 add_cmd ("sol-threads", class_maintenance
, info_solthreads
,
1696 "Show info on Solaris user threads.\n", &maintenanceinfolist
);
1698 memcpy (&orig_core_ops
, &core_ops
, sizeof (struct target_ops
));
1699 memcpy (&core_ops
, &sol_core_ops
, sizeof (struct target_ops
));
1700 add_target (&core_ops
);
1702 /* Hook into new_objfile notification. */
1703 target_new_objfile_chain
= target_new_objfile_hook
;
1704 target_new_objfile_hook
= sol_thread_new_objfile
;
1709 fprintf_unfiltered (gdb_stderr
, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ());
1714 /* allow the user to debug non-threaded core files */
1715 add_target (&core_ops
);