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 written/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 ();
757 /* Transfer LEN bytes between GDB address MYADDR and target address
758 MEMADDR. If DOWRITE is non-zero, transfer them to the target,
759 otherwise transfer them from the target. TARGET is unused.
761 Returns the number of bytes transferred. */
764 sol_thread_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int dowrite
,
765 struct mem_attrib
*attrib
,
766 struct target_ops
*target
)
769 struct cleanup
*old_chain
;
771 old_chain
= save_inferior_pid ();
773 if (is_thread (inferior_pid
) || /* A thread */
774 !target_thread_alive (inferior_pid
)) /* An lwp, but not alive */
775 inferior_pid
= procfs_first_available (); /* Find any live lwp. */
776 /* Note: don't need to call switch_to_thread; we're just reading memory. */
778 if (target_has_execution
)
779 retval
= procfs_ops
.to_xfer_memory (memaddr
, myaddr
, len
,
780 dowrite
, attrib
, target
);
782 retval
= orig_core_ops
.to_xfer_memory (memaddr
, myaddr
, len
,
783 dowrite
, attrib
, target
);
785 do_cleanups (old_chain
);
790 /* Print status information about what we're accessing. */
793 sol_thread_files_info (struct target_ops
*ignore
)
795 procfs_ops
.to_files_info (ignore
);
799 sol_thread_kill_inferior (void)
801 procfs_ops
.to_kill ();
805 sol_thread_notice_signals (int pid
)
807 procfs_ops
.to_notice_signals (PIDGET (pid
));
810 /* Fork an inferior process, and start debugging it with /proc. */
813 sol_thread_create_inferior (char *exec_file
, char *allargs
, char **env
)
815 procfs_ops
.to_create_inferior (exec_file
, allargs
, env
);
817 if (sol_thread_active
&& inferior_pid
!= 0)
819 main_ph
.pid
= inferior_pid
; /* Save for xfer_memory */
821 push_target (&sol_thread_ops
);
823 inferior_pid
= lwp_to_thread (inferior_pid
);
824 if (inferior_pid
== -1)
825 inferior_pid
= main_ph
.pid
;
827 if (!in_thread_list (inferior_pid
))
828 add_thread (inferior_pid
);
832 /* This routine is called whenever a new symbol table is read in, or when all
833 symbol tables are removed. libthread_db can only be initialized when it
834 finds the right variables in libthread.so. Since it's a shared library,
835 those variables don't show up until the library gets mapped and the symbol
838 /* This new_objfile event is now managed by a chained function pointer.
839 * It is the callee's responsability to call the next client on the chain.
842 /* Saved pointer to previous owner of the new_objfile event. */
843 static void (*target_new_objfile_chain
) (struct objfile
*);
846 sol_thread_new_objfile (struct objfile
*objfile
)
852 sol_thread_active
= 0;
856 /* don't do anything if init failed to resolve the libthread_db library */
857 if (!procfs_suppress_run
)
860 /* Now, initialize the thread debugging library. This needs to be done after
861 the shared libraries are located because it needs information from the
862 user's thread library. */
867 warning ("sol_thread_new_objfile: td_init: %s", td_err_string (val
));
871 val
= p_td_ta_new (&main_ph
, &main_ta
);
872 if (val
== TD_NOLIBTHREAD
)
874 else if (val
!= TD_OK
)
876 warning ("sol_thread_new_objfile: td_ta_new: %s", td_err_string (val
));
880 sol_thread_active
= 1;
882 /* Call predecessor on chain, if any. */
883 if (target_new_objfile_chain
)
884 target_new_objfile_chain (objfile
);
887 /* Clean up after the inferior dies. */
890 sol_thread_mourn_inferior (void)
892 unpush_target (&sol_thread_ops
);
893 procfs_ops
.to_mourn_inferior ();
896 /* Mark our target-struct as eligible for stray "run" and "attach" commands. */
899 sol_thread_can_run (void)
901 return procfs_suppress_run
;
908 sol_thread_alive - test thread for "aliveness"
912 static bool sol_thread_alive (int pid);
916 returns true if thread still active in inferior.
921 sol_thread_alive (int pid
)
923 if (is_thread (pid
)) /* non-kernel thread */
928 pid
= GET_THREAD (pid
);
929 if ((val
= p_td_ta_map_id2thr (main_ta
, pid
, &th
)) != TD_OK
)
930 return 0; /* thread not found */
931 if ((val
= p_td_thr_validate (&th
)) != TD_OK
)
932 return 0; /* thread not valid */
933 return 1; /* known thread: return true */
936 /* kernel thread (LWP): let procfs test it */
938 if (target_has_execution
)
939 return procfs_ops
.to_thread_alive (pid
);
941 return orig_core_ops
.to_thread_alive (pid
);
946 sol_thread_stop (void)
948 procfs_ops
.to_stop ();
951 /* These routines implement the lower half of the thread_db interface. Ie: the
954 /* Various versions of <proc_service.h> have slightly
955 different function prototypes. In particular, we have
958 struct ps_prochandle * const struct ps_prochandle *
963 Which one you have depends on solaris version and what
964 patches you've applied. On the theory that there are
965 only two major variants, we have configure check the
966 prototype of ps_pdwrite (), and use that info to make
967 appropriate typedefs here. */
969 #ifdef PROC_SERVICE_IS_OLD
970 typedef const struct ps_prochandle
*gdb_ps_prochandle_t
;
971 typedef char *gdb_ps_read_buf_t
;
972 typedef char *gdb_ps_write_buf_t
;
973 typedef int gdb_ps_size_t
;
974 typedef paddr_t gdb_ps_addr_t
;
976 typedef struct ps_prochandle
*gdb_ps_prochandle_t
;
977 typedef void *gdb_ps_read_buf_t
;
978 typedef const void *gdb_ps_write_buf_t
;
979 typedef size_t gdb_ps_size_t
;
980 typedef psaddr_t gdb_ps_addr_t
;
984 /* The next four routines are called by thread_db to tell us to stop and stop
985 a particular process or lwp. Since GDB ensures that these are all stopped
986 by the time we call anything in thread_db, these routines need to do
992 ps_pstop (gdb_ps_prochandle_t ph
)
997 /* Process continue */
1000 ps_pcontinue (gdb_ps_prochandle_t ph
)
1008 ps_lstop (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
1016 ps_lcontinue (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
1021 /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */
1024 ps_pglobal_lookup (gdb_ps_prochandle_t ph
, const char *ld_object_name
,
1025 const char *ld_symbol_name
, gdb_ps_addr_t
* ld_symbol_addr
)
1027 struct minimal_symbol
*ms
;
1029 ms
= lookup_minimal_symbol (ld_symbol_name
, NULL
, NULL
);
1034 *ld_symbol_addr
= SYMBOL_VALUE_ADDRESS (ms
);
1039 /* Common routine for reading and writing memory. */
1042 rw_common (int dowrite
, const struct ps_prochandle
*ph
, gdb_ps_addr_t addr
,
1043 char *buf
, int size
)
1045 struct cleanup
*old_chain
;
1047 old_chain
= save_inferior_pid ();
1049 if (is_thread (inferior_pid
) || /* A thread */
1050 !target_thread_alive (inferior_pid
)) /* An lwp, but not alive */
1051 inferior_pid
= procfs_first_available (); /* Find any live lwp. */
1052 /* Note: don't need to call switch_to_thread; we're just reading memory. */
1054 #if defined (__sparcv9)
1055 /* For Sparc64 cross Sparc32, make sure the address has not been
1056 accidentally sign-extended (or whatever) to beyond 32 bits. */
1057 if (bfd_get_arch_size (exec_bfd
) == 32)
1065 /* FIXME: passing 0 as attrib argument. */
1066 if (target_has_execution
)
1067 cc
= procfs_ops
.to_xfer_memory (addr
, buf
, size
,
1068 dowrite
, 0, &procfs_ops
);
1070 cc
= orig_core_ops
.to_xfer_memory (addr
, buf
, size
,
1071 dowrite
, 0, &core_ops
);
1076 print_sys_errmsg ("rw_common (): read", errno
);
1078 print_sys_errmsg ("rw_common (): write", errno
);
1080 do_cleanups (old_chain
);
1087 warning ("rw_common (): unable to read at addr 0x%lx",
1090 warning ("rw_common (): unable to write at addr 0x%lx",
1093 do_cleanups (old_chain
);
1102 do_cleanups (old_chain
);
1107 /* Copies SIZE bytes from target process .data segment to debugger memory. */
1110 ps_pdread (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1111 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
1113 return rw_common (0, ph
, addr
, buf
, size
);
1116 /* Copies SIZE bytes from debugger memory .data segment to target process. */
1119 ps_pdwrite (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1120 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
1122 return rw_common (1, ph
, addr
, (char *) buf
, size
);
1125 /* Copies SIZE bytes from target process .text segment to debugger memory. */
1128 ps_ptread (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1129 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
1131 return rw_common (0, ph
, addr
, buf
, size
);
1134 /* Copies SIZE bytes from debugger memory .text segment to target process. */
1137 ps_ptwrite (gdb_ps_prochandle_t ph
, gdb_ps_addr_t addr
,
1138 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
1140 return rw_common (1, ph
, addr
, (char *) buf
, size
);
1143 /* Get integer regs for LWP */
1146 ps_lgetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1147 prgregset_t gregset
)
1149 struct cleanup
*old_chain
;
1151 old_chain
= save_inferior_pid ();
1153 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1155 if (target_has_execution
)
1156 procfs_ops
.to_fetch_registers (-1);
1158 orig_core_ops
.to_fetch_registers (-1);
1159 fill_gregset ((gdb_gregset_t
*) gregset
, -1);
1161 do_cleanups (old_chain
);
1166 /* Set integer regs for LWP */
1169 ps_lsetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1170 const prgregset_t gregset
)
1172 struct cleanup
*old_chain
;
1174 old_chain
= save_inferior_pid ();
1176 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1178 supply_gregset ((gdb_gregset_t
*) gregset
);
1179 if (target_has_execution
)
1180 procfs_ops
.to_store_registers (-1);
1182 orig_core_ops
.to_store_registers (-1);
1184 do_cleanups (old_chain
);
1189 /* Log a message (sends to gdb_stderr). */
1192 ps_plog (const char *fmt
,...)
1196 va_start (args
, fmt
);
1198 vfprintf_filtered (gdb_stderr
, fmt
, args
);
1201 /* Get size of extra register set. Currently a noop. */
1204 ps_lgetxregsize (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, int *xregsize
)
1211 val
= get_lwp_fd (ph
, lwpid
, &lwp_fd
);
1215 if (ioctl (lwp_fd
, PIOCGXREGSIZE
, ®size
))
1217 if (errno
== EINVAL
)
1218 return PS_NOFREGS
; /* XXX Wrong code, but this is the closest
1219 thing in proc_service.h */
1221 print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno
);
1229 /* Get extra register set. Currently a noop. */
1232 ps_lgetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
1238 val
= get_lwp_fd (ph
, lwpid
, &lwp_fd
);
1242 if (ioctl (lwp_fd
, PIOCGXREG
, xregset
))
1244 print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno
);
1252 /* Set extra register set. Currently a noop. */
1255 ps_lsetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
1261 val
= get_lwp_fd (ph
, lwpid
, &lwp_fd
);
1265 if (ioctl (lwp_fd
, PIOCSXREG
, xregset
))
1267 print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno
);
1275 /* Get floating-point regs for LWP */
1278 ps_lgetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1279 prfpregset_t
* fpregset
)
1281 struct cleanup
*old_chain
;
1283 old_chain
= save_inferior_pid ();
1285 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1287 if (target_has_execution
)
1288 procfs_ops
.to_fetch_registers (-1);
1290 orig_core_ops
.to_fetch_registers (-1);
1291 fill_fpregset ((gdb_fpregset_t
*) fpregset
, -1);
1293 do_cleanups (old_chain
);
1298 /* Set floating-point regs for LWP */
1301 ps_lsetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1302 const prfpregset_t
* fpregset
)
1304 struct cleanup
*old_chain
;
1306 old_chain
= save_inferior_pid ();
1308 inferior_pid
= BUILD_LWP (lwpid
, PIDGET (inferior_pid
));
1310 supply_fpregset ((gdb_fpregset_t
*) fpregset
);
1311 if (target_has_execution
)
1312 procfs_ops
.to_store_registers (-1);
1314 orig_core_ops
.to_store_registers (-1);
1316 do_cleanups (old_chain
);
1321 #ifdef PR_MODEL_LP64
1322 /* Identify process as 32-bit or 64-bit.
1323 At the moment I'm using bfd to do this.
1324 There might be a more solaris-specific (eg. procfs) method,
1325 but this ought to work. */
1328 ps_pdmodel (gdb_ps_prochandle_t ph
, int *data_model
)
1331 *data_model
= PR_MODEL_UNKNOWN
;
1332 else if (bfd_get_arch_size (exec_bfd
) == 32)
1333 *data_model
= PR_MODEL_ILP32
;
1335 *data_model
= PR_MODEL_LP64
;
1339 #endif /* PR_MODEL_LP64 */
1341 #ifdef TM_I386SOL2_H
1343 /* Reads the local descriptor table of a LWP. */
1346 ps_lgetLDT (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
1349 /* NOTE: only used on Solaris, therefore OK to refer to procfs.c */
1350 extern struct ssd
*procfs_find_LDT_entry (int);
1353 /* FIXME: can't I get the process ID from the prochandle or something?
1356 if (inferior_pid
<= 0 || lwpid
<= 0)
1359 ret
= procfs_find_LDT_entry (BUILD_LWP (lwpid
, PIDGET (inferior_pid
)));
1362 memcpy (pldt
, ret
, sizeof (struct ssd
));
1365 else /* LDT not found. */
1368 #endif /* TM_I386SOL2_H */
1370 /* Convert a pid to printable form. */
1373 solaris_pid_to_str (int pid
)
1375 static char buf
[100];
1377 /* in case init failed to resolve the libthread_db library */
1378 if (!procfs_suppress_run
)
1379 return procfs_pid_to_str (pid
);
1381 if (is_thread (pid
))
1385 lwp
= thread_to_lwp (pid
, -2);
1388 sprintf (buf
, "Thread %d (defunct)", GET_THREAD (pid
));
1390 sprintf (buf
, "Thread %d (LWP %d)", GET_THREAD (pid
), GET_LWP (lwp
));
1392 sprintf (buf
, "Thread %d ", GET_THREAD (pid
));
1394 else if (GET_LWP (pid
) != 0)
1395 sprintf (buf
, "LWP %d ", GET_LWP (pid
));
1397 sprintf (buf
, "process %d ", PIDGET (pid
));
1403 /* Worker bee for find_new_threads
1404 Callback function that gets called once per USER thread (i.e., not
1408 sol_find_new_threads_callback (const td_thrhandle_t
*th
, void *ignored
)
1414 if ((retval
= p_td_thr_get_info (th
, &ti
)) != TD_OK
)
1418 pid
= BUILD_THREAD (ti
.ti_tid
, PIDGET (inferior_pid
));
1419 if (!in_thread_list (pid
))
1426 sol_find_new_threads (void)
1428 /* don't do anything if init failed to resolve the libthread_db library */
1429 if (!procfs_suppress_run
)
1432 if (inferior_pid
== -1)
1434 printf_filtered ("No process.\n");
1437 procfs_find_new_threads (); /* first find new kernel threads. */
1438 p_td_ta_thr_iter (main_ta
, sol_find_new_threads_callback
, (void *) 0,
1439 TD_THR_ANY_STATE
, TD_THR_LOWEST_PRIORITY
,
1440 TD_SIGNO_MASK
, TD_THR_ANY_USER_FLAGS
);
1444 sol_core_open (char *filename
, int from_tty
)
1446 orig_core_ops
.to_open (filename
, from_tty
);
1450 sol_core_close (int quitting
)
1452 orig_core_ops
.to_close (quitting
);
1456 sol_core_detach (char *args
, int from_tty
)
1458 unpush_target (&core_ops
);
1459 orig_core_ops
.to_detach (args
, from_tty
);
1463 sol_core_files_info (struct target_ops
*t
)
1465 orig_core_ops
.to_files_info (t
);
1468 /* Worker bee for info sol-thread command. This is a callback function that
1469 gets called once for each Solaris thread (ie. not kernel thread) in the
1470 inferior. Print anything interesting that we can think of. */
1473 info_cb (const td_thrhandle_t
*th
, void *s
)
1478 if ((ret
= p_td_thr_get_info (th
, &ti
)) == TD_OK
)
1480 printf_filtered ("%s thread #%d, lwp %d, ",
1481 ti
.ti_type
== TD_THR_SYSTEM
? "system" : "user ",
1482 ti
.ti_tid
, ti
.ti_lid
);
1483 switch (ti
.ti_state
)
1486 case TD_THR_UNKNOWN
:
1487 printf_filtered ("<unknown state>");
1489 case TD_THR_STOPPED
:
1490 printf_filtered ("(stopped)");
1493 printf_filtered ("(run) ");
1496 printf_filtered ("(active) ");
1499 printf_filtered ("(zombie) ");
1502 printf_filtered ("(asleep) ");
1504 case TD_THR_STOPPED_ASLEEP
:
1505 printf_filtered ("(stopped asleep)");
1508 /* Print thr_create start function: */
1509 if (ti
.ti_startfunc
!= 0)
1511 struct minimal_symbol
*msym
;
1512 msym
= lookup_minimal_symbol_by_pc (ti
.ti_startfunc
);
1514 printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym
));
1516 printf_filtered (" startfunc: 0x%s\n", paddr (ti
.ti_startfunc
));
1519 /* If thread is asleep, print function that went to sleep: */
1520 if (ti
.ti_state
== TD_THR_SLEEP
)
1522 struct minimal_symbol
*msym
;
1523 msym
= lookup_minimal_symbol_by_pc (ti
.ti_pc
);
1525 printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym
));
1527 printf_filtered (" - Sleep func: 0x%s\n", paddr (ti
.ti_startfunc
));
1530 /* Wrap up line, if necessary */
1531 if (ti
.ti_state
!= TD_THR_SLEEP
&& ti
.ti_startfunc
== 0)
1532 printf_filtered ("\n"); /* don't you hate counting newlines? */
1535 warning ("info sol-thread: failed to get info for thread.");
1540 /* List some state about each Solaris user thread in the inferior. */
1543 info_solthreads (char *args
, int from_tty
)
1545 p_td_ta_thr_iter (main_ta
, info_cb
, args
,
1546 TD_THR_ANY_STATE
, TD_THR_LOWEST_PRIORITY
,
1547 TD_SIGNO_MASK
, TD_THR_ANY_USER_FLAGS
);
1551 ignore (CORE_ADDR addr
, char *contents
)
1558 init_sol_thread_ops (void)
1560 sol_thread_ops
.to_shortname
= "solaris-threads";
1561 sol_thread_ops
.to_longname
= "Solaris threads and pthread.";
1562 sol_thread_ops
.to_doc
= "Solaris threads and pthread support.";
1563 sol_thread_ops
.to_open
= sol_thread_open
;
1564 sol_thread_ops
.to_close
= 0;
1565 sol_thread_ops
.to_attach
= sol_thread_attach
;
1566 sol_thread_ops
.to_detach
= sol_thread_detach
;
1567 sol_thread_ops
.to_resume
= sol_thread_resume
;
1568 sol_thread_ops
.to_wait
= sol_thread_wait
;
1569 sol_thread_ops
.to_fetch_registers
= sol_thread_fetch_registers
;
1570 sol_thread_ops
.to_store_registers
= sol_thread_store_registers
;
1571 sol_thread_ops
.to_prepare_to_store
= sol_thread_prepare_to_store
;
1572 sol_thread_ops
.to_xfer_memory
= sol_thread_xfer_memory
;
1573 sol_thread_ops
.to_files_info
= sol_thread_files_info
;
1574 sol_thread_ops
.to_insert_breakpoint
= memory_insert_breakpoint
;
1575 sol_thread_ops
.to_remove_breakpoint
= memory_remove_breakpoint
;
1576 sol_thread_ops
.to_terminal_init
= terminal_init_inferior
;
1577 sol_thread_ops
.to_terminal_inferior
= terminal_inferior
;
1578 sol_thread_ops
.to_terminal_ours_for_output
= terminal_ours_for_output
;
1579 sol_thread_ops
.to_terminal_ours
= terminal_ours
;
1580 sol_thread_ops
.to_terminal_info
= child_terminal_info
;
1581 sol_thread_ops
.to_kill
= sol_thread_kill_inferior
;
1582 sol_thread_ops
.to_load
= 0;
1583 sol_thread_ops
.to_lookup_symbol
= 0;
1584 sol_thread_ops
.to_create_inferior
= sol_thread_create_inferior
;
1585 sol_thread_ops
.to_mourn_inferior
= sol_thread_mourn_inferior
;
1586 sol_thread_ops
.to_can_run
= sol_thread_can_run
;
1587 sol_thread_ops
.to_notice_signals
= sol_thread_notice_signals
;
1588 sol_thread_ops
.to_thread_alive
= sol_thread_alive
;
1589 sol_thread_ops
.to_pid_to_str
= solaris_pid_to_str
;
1590 sol_thread_ops
.to_find_new_threads
= sol_find_new_threads
;
1591 sol_thread_ops
.to_stop
= sol_thread_stop
;
1592 sol_thread_ops
.to_stratum
= process_stratum
;
1593 sol_thread_ops
.to_has_all_memory
= 1;
1594 sol_thread_ops
.to_has_memory
= 1;
1595 sol_thread_ops
.to_has_stack
= 1;
1596 sol_thread_ops
.to_has_registers
= 1;
1597 sol_thread_ops
.to_has_execution
= 1;
1598 sol_thread_ops
.to_has_thread_control
= tc_none
;
1599 sol_thread_ops
.to_sections
= 0;
1600 sol_thread_ops
.to_sections_end
= 0;
1601 sol_thread_ops
.to_magic
= OPS_MAGIC
;
1606 init_sol_core_ops (void)
1608 sol_core_ops
.to_shortname
= "solaris-core";
1609 sol_core_ops
.to_longname
= "Solaris core threads and pthread.";
1610 sol_core_ops
.to_doc
= "Solaris threads and pthread support for core files.";
1611 sol_core_ops
.to_open
= sol_core_open
;
1612 sol_core_ops
.to_close
= sol_core_close
;
1613 sol_core_ops
.to_attach
= sol_thread_attach
;
1614 sol_core_ops
.to_detach
= sol_core_detach
;
1615 /* sol_core_ops.to_resume = 0; */
1616 /* sol_core_ops.to_wait = 0; */
1617 sol_core_ops
.to_fetch_registers
= sol_thread_fetch_registers
;
1618 /* sol_core_ops.to_store_registers = 0; */
1619 /* sol_core_ops.to_prepare_to_store = 0; */
1620 sol_core_ops
.to_xfer_memory
= sol_thread_xfer_memory
;
1621 sol_core_ops
.to_files_info
= sol_core_files_info
;
1622 sol_core_ops
.to_insert_breakpoint
= ignore
;
1623 sol_core_ops
.to_remove_breakpoint
= ignore
;
1624 /* sol_core_ops.to_terminal_init = 0; */
1625 /* sol_core_ops.to_terminal_inferior = 0; */
1626 /* sol_core_ops.to_terminal_ours_for_output = 0; */
1627 /* sol_core_ops.to_terminal_ours = 0; */
1628 /* sol_core_ops.to_terminal_info = 0; */
1629 /* sol_core_ops.to_kill = 0; */
1630 /* sol_core_ops.to_load = 0; */
1631 /* sol_core_ops.to_lookup_symbol = 0; */
1632 sol_core_ops
.to_create_inferior
= sol_thread_create_inferior
;
1633 sol_core_ops
.to_stratum
= core_stratum
;
1634 sol_core_ops
.to_has_all_memory
= 0;
1635 sol_core_ops
.to_has_memory
= 1;
1636 sol_core_ops
.to_has_stack
= 1;
1637 sol_core_ops
.to_has_registers
= 1;
1638 sol_core_ops
.to_has_execution
= 0;
1639 sol_core_ops
.to_has_thread_control
= tc_none
;
1640 sol_core_ops
.to_thread_alive
= sol_thread_alive
;
1641 sol_core_ops
.to_pid_to_str
= solaris_pid_to_str
;
1642 /* On Solaris/x86, when debugging a threaded core file from process <n>,
1643 the following causes "info threads" to produce "procfs: couldn't find pid
1644 <n> in procinfo list" where <n> is the pid of the process that produced
1645 the core file. Disable it for now. */
1646 /* sol_core_ops.to_find_new_threads = sol_find_new_threads; */
1647 sol_core_ops
.to_sections
= 0;
1648 sol_core_ops
.to_sections_end
= 0;
1649 sol_core_ops
.to_magic
= OPS_MAGIC
;
1652 /* we suppress the call to add_target of core_ops in corelow because
1653 if there are two targets in the stratum core_stratum, find_core_target
1654 won't know which one to return. see corelow.c for an additonal
1655 comment on coreops_suppress_target. */
1656 int coreops_suppress_target
= 1;
1659 _initialize_sol_thread (void)
1663 init_sol_thread_ops ();
1664 init_sol_core_ops ();
1666 dlhandle
= dlopen ("libthread_db.so.1", RTLD_NOW
);
1670 #define resolve(X) \
1671 if (!(p_##X = dlsym (dlhandle, #X))) \
1675 resolve (td_ta_new
);
1676 resolve (td_ta_delete
);
1678 resolve (td_ta_get_ph
);
1679 resolve (td_ta_get_nthreads
);
1680 resolve (td_ta_tsd_iter
);
1681 resolve (td_ta_thr_iter
);
1682 resolve (td_thr_validate
);
1683 resolve (td_thr_tsd
);
1684 resolve (td_thr_get_info
);
1685 resolve (td_thr_getfpregs
);
1686 resolve (td_thr_getxregsize
);
1687 resolve (td_thr_getxregs
);
1688 resolve (td_thr_sigsetmask
);
1689 resolve (td_thr_setprio
);
1690 resolve (td_thr_setsigpending
);
1691 resolve (td_thr_setfpregs
);
1692 resolve (td_thr_setxregs
);
1693 resolve (td_ta_map_id2thr
);
1694 resolve (td_ta_map_lwp2thr
);
1695 resolve (td_thr_getgregs
);
1696 resolve (td_thr_setgregs
);
1698 add_target (&sol_thread_ops
);
1700 procfs_suppress_run
= 1;
1702 add_cmd ("sol-threads", class_maintenance
, info_solthreads
,
1703 "Show info on Solaris user threads.\n", &maintenanceinfolist
);
1705 memcpy (&orig_core_ops
, &core_ops
, sizeof (struct target_ops
));
1706 memcpy (&core_ops
, &sol_core_ops
, sizeof (struct target_ops
));
1707 add_target (&core_ops
);
1709 /* Hook into new_objfile notification. */
1710 target_new_objfile_chain
= target_new_objfile_hook
;
1711 target_new_objfile_hook
= sol_thread_new_objfile
;
1716 fprintf_unfiltered (gdb_stderr
, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ());
1721 /* allow the user to debug non-threaded core files */
1722 add_target (&core_ops
);