1 /* Low level interface for debugging UnixWare user-mode threads for
4 Copyright 1999, 2000 Free Software Foundation, Inc.
5 Written by Nick Duffek <nsd@cygnus.com>.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
25 /* Like many systems, UnixWare implements two classes of threads:
26 kernel-mode threads, which are scheduled by the kernel; and
27 user-mode threads, which are scheduled by a library. UnixWare
28 calls these two classes lightweight processes (LWPs) and threads,
31 This module deals with user-mode threads. It calls procfs_ops
32 functions to deal with LWPs and processes and core_ops functions to
35 As of this writing, the user-mode thread debugging interface is not
36 documented beyond the comments in <thread.h>. The following
37 description has been gleaned from experience and from information
40 libthread.so, against which all UnixWare user-mode thread programs
41 link, provides a global thread_debug structure named _thr_debug.
44 (1) thr_map is a pointer to a pointer to an element of a
45 thread_map ring. A thread_map contains a single thread's id
46 number, state, LWP pointer, recent register state, and other
49 (2) thr_brk is a pointer to a stub function that libthread.so
50 calls when it changes a thread's state, e.g. by creating it,
51 switching it to an LWP, or causing it to exit.
53 (3) thr_debug_on controls whether libthread.so calls thr_brk().
55 Debuggers are able to track thread activity by setting a private
56 breakpoint on thr_brk() and setting thr_debug_on to 1.
58 thr_brk() receives two arguments:
60 (1) a pointer to a thread_map describing the thread being
63 (2) an enum thread_change specifying one of the following
67 thread_create thread has just been created
68 thread_exit thread has just exited
69 switch_begin thread will be switched to an LWP
70 switch_complete thread has been switched to an LWP
71 cancel_complete thread wasn't switched to an LWP
72 thread_suspend thread has been thr_suspend()ed
73 thread_suspend_pending thread will be thr_suspend()ed
74 thread_continue thread has been thr_continue()d
76 The thread_map argument to thr_brk() is NULL under the following
79 - The main thread is being acted upon. The main thread always
80 has id 1, so its thread_map is easy to find by scanning through
83 - A "switch_complete" change is occurring, which means that the
84 thread specified in the most recent "switch_begin" change has
87 - A "cancel_complete" change is occurring, which means that the
88 thread specified in the most recent "switch_begin" change has
89 not moved to an LWP after all.
91 - A spurious "switch_begin" change is occurring after a
94 Between switch_begin and switch_complete or cancel_complete, the
95 affected thread's LWP pointer is not reliable. It is possible that
96 other parts of the thread's thread_map are also unreliable during
101 #include "gdbthread.h"
103 #include "inferior.h"
107 * <thread.h> includes <sys/priocntl.h>, which requires boolean_t from
108 * <sys/types.h>, which doesn't typedef boolean_t with gcc.
110 #define boolean_t int
114 #include <synch.h> /* for UnixWare 2.x */
118 * Whether to emit debugging output.
123 * Default debugging output file, overridden by envvar UWTHR_DEBUG.
125 #define DEBUG_FILE "/dev/tty"
128 * #if DEBUG, write string S to the debugging output channel.
131 # define DBG(fmt_and_args)
132 # define DBG2(fmt_and_args)
134 # define DBG(fmt_and_args) dbg fmt_and_args
135 # define DBG2(fmt_and_args)
139 * Back end to CALL_BASE() and TRY_BASE(): evaluate CALL, then convert
140 * inferior_pid to a composite thread/process id.
142 #define CALL_BASE_1(call) \
144 DBG2(("CALL_BASE(" #call ")")); \
146 do_cleanups (infpid_cleanup); \
150 * If inferior_pid can be converted to a composite lwp/process id, do so,
151 * evaluate base_ops function CALL, and then convert inferior_pid back to a
152 * composite thread/process id.
154 * Otherwise, issue an error message and return nonlocally.
156 #define CALL_BASE(call) \
158 if (!lwp_infpid ()) \
159 error ("uw-thread: no lwp"); \
160 CALL_BASE_1 (call); \
164 * Like CALL_BASE(), but instead of returning nonlocally on error, set
165 * *CALLED to whether the inferior_pid conversion was successful.
167 #define TRY_BASE(call, called) \
169 if ((*(called) = lwp_infpid ())) \
170 CALL_BASE_1 (call); \
174 * Information passed by thread_iter() to its callback parameter.
177 struct thread_map map;
183 * Private thread data for the thread_info struct.
185 struct private_thread_info {
186 int stable; /* 0 if libthread.so is modifying thread map */
187 int thrid; /* thread id assigned by libthread.so */
188 int lwpid; /* thread's lwp if .stable, 0 means no lwp */
189 CORE_ADDR mapp; /* address of thread's map structure */
193 /* procfs.c's target-specific operations. */
194 extern struct target_ops procfs_ops;
196 /* Flag to prevent procfs.c from starting inferior processes. */
197 extern int procfs_suppress_run;
199 /* This module's target-specific operations. */
200 static struct target_ops uw_thread_ops;
202 /* Copy of the target over which uw_thread_ops is pushed. This is
203 more convenient than a pointer to procfs_ops or core_ops, because
204 they lack current_target's default callbacks. */
205 static struct target_ops base_ops;
207 /* Saved pointer to previous owner of target_new_objfile_hook. */
208 static void (*target_new_objfile_chain)(struct objfile *);
210 /* Whether we are debugging a user-space thread program. This isn't
211 set until after libthread.so is loaded by the program being
214 Except for module one-time intialization and where otherwise
215 documented, no functions in this module get called when
216 !uw_thread_active. */
217 static int uw_thread_active;
219 /* For efficiency, cache the addresses of libthread.so's _thr_debug
220 structure, its thr_brk stub function, and the main thread's map. */
221 static CORE_ADDR thr_debug_addr;
222 static CORE_ADDR thr_brk_addr;
223 static CORE_ADDR thr_map_main;
225 /* Remember the thread most recently marked as switching. Necessary because
226 libthread.so passes null map when calling stub with tc_*_complete. */
227 static struct thread_info *switchto_thread;
229 /* Cleanup chain for safely restoring inferior_pid after CALL_BASE. */
230 static struct cleanup *infpid_cleanup;
235 * Helper function for DBG() macro: if printf-style FMT is non-null, format it
236 * with args and display the result on the debugging output channel.
241 static int fd = -1, len;
251 path = getenv ("UWTHR_DEBUG");
254 if ((fd = open (path, O_WRONLY | O_CREAT | O_TRUNC, 0664)) < 0)
255 error ("can't open %s\n", path);
258 va_start (args, fmt);
259 vsprintf (buf, fmt, args);
264 (void)write (fd, buf, len + 1);
269 * Return a string representing composite PID's components.
274 static char *buf, buf1[80], buf2[80];
275 if (!buf || buf == buf2)
281 sprintf (buf, "%d", pid);
283 sprintf (buf, "%s %d/%d", ISTID (pid) ? "thr" : "lwp",
284 TIDGET (pid), PIDGET (pid));
290 * Return a string representing thread state CHANGE.
293 dbgchange (enum thread_change change)
296 case tc_invalid: return "invalid";
297 case tc_thread_create: return "thread_create";
298 case tc_thread_exit: return "thread_exit";
299 case tc_switch_begin: return "switch_begin";
300 case tc_switch_complete: return "switch_complete";
301 case tc_cancel_complete: return "cancel_complete";
302 case tc_thread_suspend: return "thread_suspend";
303 case tc_thread_suspend_pending: return "thread_suspend_pending";
304 case tc_thread_continue: return "thread_continue";
305 default: return "unknown";
310 * Return a string representing thread STATE.
316 case TS_ONPROC: return "running";
317 case TS_SLEEP: return "sleeping";
318 case TS_RUNNABLE: return "runnable";
319 case TS_ZOMBIE: return "zombie";
320 case TS_SUSPENDED: return "suspended";
322 case TS_FORK: return "forking";
324 default: return "confused";
332 * Read the contents of _thr_debug into *DEBUGP. Return success.
335 read_thr_debug (struct thread_debug *debugp)
337 return base_ops.to_xfer_memory (thr_debug_addr, (char *)debugp,
338 sizeof (*debugp), 0, &base_ops);
342 * Read into MAP the contents of the thread map at inferior process address
343 * MAPP. Return success.
346 read_map (CORE_ADDR mapp, struct thread_map *map)
348 return base_ops.to_xfer_memory ((CORE_ADDR)THR_MAP (mapp), (char *)map,
349 sizeof (*map), 0, &base_ops);
353 * Read into LWP the contents of the lwp decriptor at inferior process address
354 * LWPP. Return success.
357 read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp)
359 return base_ops.to_xfer_memory (lwpp, (char *)lwp,
360 sizeof (*lwp), 0, &base_ops);
364 * Iterate through all user threads, applying FUNC(<map>, <lwp>, DATA) until
365 * (a) FUNC returns nonzero,
366 * (b) FUNC has been applied to all threads, or
367 * (c) an error occurs,
368 * where <map> is the thread's struct thread_map and <lwp> if non-null is the
369 * thread's current __lwp_desc_t.
371 * If a call to FUNC returns nonzero, return that value; otherwise, return 0.
374 thread_iter (int (*func)(iter_t *, void *), void *data)
376 struct thread_debug debug;
377 CORE_ADDR first, mapp;
381 if (!read_thr_debug (&debug))
383 if (!base_ops.to_xfer_memory ((CORE_ADDR)debug.thr_map, (char *)&mapp,
384 sizeof (mapp), 0, &base_ops))
391 if (!read_map (mapp, &iter.map))
394 if (iter.map.thr_lwpp)
395 if (!read_lwp ((CORE_ADDR)iter.map.thr_lwpp, &iter.lwp))
399 if ((ret = func (&iter, data)))
402 mapp = (CORE_ADDR)iter.map.thr_next;
409 * Deactivate user-mode thread support.
412 deactivate_uw_thread (void)
414 uw_thread_active = 0;
415 unpush_target (&uw_thread_ops);
419 * Return the composite lwp/process id corresponding to composite
420 * id PID. If PID is a thread with no lwp, return 0.
425 struct thread_info *info;
430 else if (!(info = find_thread_pid (pid)))
432 else if (!info->private->lwpid)
435 lid = MKLID (pid, info->private->lwpid);
437 DBG2((" thr_to_lwp(%s) = %s", dbgpid (pid), dbgpid (lid)));
442 * find_thread_lwp() callback: return whether TP describes a thread
443 * associated with lwp id DATA.
446 find_thread_lwp_callback (struct thread_info *tp, void *data)
448 int lwpid = (int)data;
450 if (!ISTID (tp->pid))
452 if (!tp->private->stable)
454 if (lwpid != tp->private->lwpid)
462 * If a thread is associated with lwp id LWPID, return the corresponding
463 * member of the global thread list; otherwise, return null.
465 static struct thread_info *
466 find_thread_lwp (int lwpid)
468 return iterate_over_threads (find_thread_lwp_callback, (void *)lwpid);
472 * Return the composite thread/process id corresponding to composite
473 * id PID. If PID is an lwp with no thread, return PID.
478 struct thread_info *info;
479 int tid = pid, lwpid;
483 if (!(lwpid = LIDGET (pid)))
485 if (!(info = find_thread_lwp (lwpid)))
487 tid = MKTID (pid, info->private->thrid);
490 DBG2((ISTID (tid) ? NULL : "lwp_to_thr: no thr for %s", dbgpid (pid)));
495 * do_cleanups() callback: convert inferior_pid to a composite
496 * thread/process id after having made a procfs call.
499 thr_infpid (void *unused)
501 int pid = lwp_to_thr (inferior_pid);
502 DBG2((" inferior_pid from procfs: %s => %s",
503 dbgpid (inferior_pid), dbgpid (pid)));
508 * If possible, convert inferior_pid to a composite lwp/process id in
509 * preparation for making a procfs call. Return success.
514 int pid = thr_to_lwp (inferior_pid);
515 DBG2((" inferior_pid to procfs: %s => %s",
516 dbgpid (inferior_pid), dbgpid (pid)));
522 infpid_cleanup = make_cleanup (thr_infpid, NULL);
527 * Add to the global thread list a new user-mode thread with system id THRID,
528 * lwp id LWPID, map address MAPP, and composite thread/process PID.
531 add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, int pid)
533 struct thread_info *newthread;
535 if ((newthread = add_thread (pid)) == NULL)
536 error ("failed to create new thread structure");
538 newthread->private = xmalloc (sizeof (struct private_thread_info));
539 newthread->private->stable = 1;
540 newthread->private->thrid = thrid;
541 newthread->private->lwpid = lwpid;
542 newthread->private->mapp = mapp;
544 if (target_has_execution)
545 printf_unfiltered ("[New %s]\n", target_pid_to_str (pid));
549 * notice_threads() and find_main() callback: if the thread list doesn't
550 * already contain the thread described by ITER, add it if it's the main
551 * thread or if !DATA.
554 notice_thread (iter_t *iter, void *data)
556 int thrid = iter->map.thr_tid;
557 int lwpid = !iter->map.thr_lwpp ? 0 : iter->lwp.lwp_id;
558 int pid = MKTID (inferior_pid, thrid);
560 if (!find_thread_pid (pid) && (!data || thrid == 1))
561 add_thread_uw (thrid, lwpid, iter->mapp, pid);
567 * Add to the thread list any threads it doesn't already contain.
570 notice_threads (void)
572 thread_iter (notice_thread, NULL);
576 * Return the address of the main thread's map. On error, return 0.
583 struct thread_info *info;
584 thread_iter (notice_thread, (void *)1);
585 if ((info = find_thread_pid (MKTID (inferior_pid, 1))))
586 thr_map_main = info->private->mapp;
592 * Attach to process specified by ARGS, then initialize for debugging it
593 * and wait for the trace-trap that results from attaching.
595 * This function only gets called with uw_thread_active == 0.
598 uw_thread_attach (char *args, int from_tty)
600 procfs_ops.to_attach (args, from_tty);
601 if (uw_thread_active)
606 * Detach from the process attached to by uw_thread_attach().
609 uw_thread_detach (char *args, int from_tty)
611 deactivate_uw_thread ();
612 base_ops.to_detach (args, from_tty);
616 * Tell the inferior process to continue running thread PID if >= 0
617 * and all threads otherwise.
620 uw_thread_resume (int pid, int step, enum target_signal signo)
622 if (pid > 0 && !(pid = thr_to_lwp (pid)))
625 CALL_BASE (base_ops.to_resume (pid, step, signo));
629 * If the trap we just received from lwp PID was due to a breakpoint
630 * on the libthread.so debugging stub, update this module's state
634 libthread_stub (int pid)
636 CORE_ADDR sp, mapp, mapp_main;
637 enum thread_change change;
638 struct thread_map map;
641 struct thread_info *info;
643 /* Check for stub breakpoint. */
644 if (read_pc_pid (pid) - DECR_PC_AFTER_BREAK != thr_brk_addr)
647 /* Retrieve stub args. */
648 sp = read_register_pid (SP_REGNUM, pid);
649 if (!base_ops.to_xfer_memory (sp + SP_ARG0, (char *)&mapp,
650 sizeof (mapp), 0, &base_ops))
652 if (!base_ops.to_xfer_memory (sp + SP_ARG0 + sizeof (mapp), (char *)&change,
653 sizeof (change), 0, &base_ops))
656 /* create_inferior() may not have finished yet, so notice the main
657 thread to ensure that it's displayed first by add_thread(). */
658 mapp_main = find_main ();
660 /* Notice thread creation, deletion, or stability change. */
662 case tc_switch_begin:
663 if (!mapp) /* usually means main thread */
667 case tc_thread_create:
671 if (!read_map (mapp, &map))
673 tid = MKTID (pid, map.thr_tid);
676 case tc_thread_create: /* new thread */
679 else if (!read_lwp ((CORE_ADDR)map.thr_lwpp, &lwp))
683 add_thread_uw (map.thr_tid, lwpid, mapp, tid);
686 case tc_thread_exit: /* thread has exited */
687 printf_unfiltered ("[Exited %s]\n", target_pid_to_str (tid));
689 if (tid == inferior_pid)
693 case tc_switch_begin: /* lwp is switching threads */
696 if (!(switchto_thread = find_thread_pid (tid)))
698 switchto_thread->private->stable = 0;
706 case tc_switch_complete: /* lwp has switched threads */
707 case tc_cancel_complete: /* lwp didn't switch threads */
708 if (!switchto_thread)
711 if (change == tc_switch_complete)
714 * If switchto_thread is the main thread, then (a) the corresponding
715 * tc_switch_begin probably received a null map argument and therefore
716 * (b) it may have been a spurious switch following a tc_thread_exit.
718 * Therefore, explicitly query the thread's lwp before caching it in
719 * its thread list entry.
721 if (!read_map (switchto_thread->private->mapp, &map))
725 if (!read_lwp ((CORE_ADDR)map.thr_lwpp, &lwp))
727 if ((info = find_thread_lwp (lwp.lwp_id)))
728 info->private->lwpid = 0;
729 switchto_thread->private->lwpid = lwp.lwp_id;
733 switchto_thread->private->stable = 1;
734 switchto_thread = NULL;
738 case tc_thread_suspend:
739 case tc_thread_suspend_pending:
740 case tc_thread_continue:
742 DBG(("unexpected condition in libthread_stub()"));
746 DBG2(("libthread_stub(%s): %s %s %s", dbgpid (pid), dbgpid (tid),
747 dbgchange (change), tid ? dbgstate (map.thr_state) : ""));
751 * Wait for thread/lwp/process ID if >= 0 or for any thread otherwise.
754 uw_thread_wait (int pid, struct target_waitstatus *status)
757 pid = thr_to_lwp (pid);
758 CALL_BASE (pid = base_ops.to_wait (pid > 0 ? pid : -1, status));
760 if (status->kind == TARGET_WAITKIND_STOPPED &&
761 status->value.sig == TARGET_SIGNAL_TRAP)
762 libthread_stub (pid);
764 return lwp_to_thr (pid);
768 * Tell gdb about the registers in the thread/lwp/process specified by
772 uw_thread_fetch_registers (int regno)
775 struct thread_info *info;
776 struct thread_map map;
778 TRY_BASE (base_ops.to_fetch_registers (regno), &called);
782 if (!(info = find_thread_pid (inferior_pid)))
784 if (!read_map (info->private->mapp, &map))
787 supply_gregset (&map.thr_ucontext.uc_mcontext.gregs);
788 supply_fpregset (&map.thr_ucontext.uc_mcontext.fpregs);
792 * Store gdb's current view of the register set into the thread/lwp/process
793 * specified by inferior_pid.
796 uw_thread_store_registers (int regno)
798 CALL_BASE (base_ops.to_store_registers (regno));
802 * Prepare to modify the registers array.
805 uw_thread_prepare_to_store (void)
807 CALL_BASE (base_ops.to_prepare_to_store ());
811 * Fork an inferior process and start debugging it.
813 * This function only gets called with uw_thread_active == 0.
816 uw_thread_create_inferior (char *exec_file, char *allargs, char **env)
818 if (uw_thread_active)
819 deactivate_uw_thread ();
821 procfs_ops.to_create_inferior (exec_file, allargs, env);
822 if (uw_thread_active)
830 * Kill and forget about the inferior process.
833 uw_thread_kill (void)
839 * Clean up after the inferior exits.
842 uw_thread_mourn_inferior (void)
844 remove_thread_event_breakpoints ();
845 deactivate_uw_thread ();
846 base_ops.to_mourn_inferior ();
850 * Return whether this module can attach to and run processes.
852 * This function only gets called with uw_thread_active == 0.
855 uw_thread_can_run (void)
857 return procfs_suppress_run;
861 * Return whether thread PID is still valid.
864 uw_thread_alive (int pid)
867 return base_ops.to_thread_alive (pid);
869 /* If it's in the thread list, it's valid, because otherwise
870 libthread_stub() would have deleted it. */
871 return in_thread_list (pid);
875 * Add to the thread list any threads and lwps it doesn't already contain.
878 uw_thread_find_new_threads (void)
880 CALL_BASE (if (base_ops.to_find_new_threads)
881 base_ops.to_find_new_threads ());
886 * Return a string for pretty-printing PID in "info threads" output.
887 * This may be called by either procfs.c or by generic gdb.
890 uw_thread_pid_to_str (int pid)
892 #define FMT "Thread %d"
893 static char buf[sizeof (FMT) + 3 * sizeof (pid)];
896 /* core_ops says "process foo", so call procfs_ops explicitly. */
897 return procfs_ops.to_pid_to_str (pid);
899 sprintf (buf, FMT, TIDGET (pid));
905 * Return a string displaying INFO state information in "info threads"
909 uw_extra_thread_info (struct thread_info *info)
912 struct thread_map map;
917 if (!ISTID (info->pid))
920 if (!info->private->stable)
923 if (!read_map (info->private->mapp, &map))
926 if (!map.thr_lwpp || !read_lwp ((CORE_ADDR)map.thr_lwpp, &lwp))
931 switch (map.thr_state) {
932 case TS_ONPROC: name = "running"; break;
933 case TS_SLEEP: name = "sleeping"; break;
934 case TS_RUNNABLE: name = "runnable"; break;
935 case TS_ZOMBIE: name = "zombie"; break;
936 case TS_SUSPENDED: name = "suspended"; break;
938 case TS_FORK: name = "forking"; break;
940 default: name = "confused"; break;
946 sprintf (buf, "%s, LWP %d", name, lwpid);
951 * Check whether libthread.so has just been loaded, and if so, try to
952 * initialize user-space thread debugging support.
954 * libthread.so loading happens while (a) an inferior process is being
955 * started by procfs and (b) a core image is being loaded.
957 * This function often gets called with uw_thread_active == 0.
960 libthread_init (void)
962 struct minimal_symbol *ms;
963 struct thread_debug debug;
965 struct breakpoint *b;
968 /* Don't initialize twice. */
969 if (uw_thread_active)
972 /* Check whether libthread.so has been loaded. */
973 if (!(ms = lookup_minimal_symbol ("_thr_debug", NULL, NULL)))
976 /* Cache _thr_debug's address. */
977 if (!(thr_debug_addr = SYMBOL_VALUE_ADDRESS (ms)))
980 /* Initialize base_ops.to_xfer_memory(). */
981 base_ops = current_target;
983 /* Load _thr_debug's current contents. */
984 if (!read_thr_debug (&debug))
987 /* User code (e.g. my test programs) may dereference _thr_debug,
988 making it availble to GDB before shared libs are loaded. */
992 /* libthread.so has been loaded, and the current_target should now
993 reflect core_ops or procfs_ops. */
994 push_target (&uw_thread_ops); /* must precede notice_threads() */
995 uw_thread_active = 1;
997 if (!target_has_execution)
999 /* Locate threads in core file. */
1004 /* Set a breakpoint on the stub function provided by libthread.so. */
1005 thr_brk_addr = (CORE_ADDR)debug.thr_brk;
1006 if (!(b = create_thread_event_breakpoint (thr_brk_addr)))
1009 /* Activate the stub function. */
1010 onp = (CORE_ADDR)&((struct thread_debug *)thr_debug_addr)->thr_debug_on;
1011 if (!base_ops.to_xfer_memory ((CORE_ADDR)onp, (char *)&one,
1012 sizeof (one), 1, &base_ops))
1014 delete_breakpoint (b);
1018 /* Prepare for finding the main thread, which doesn't yet exist. */
1025 warning ("uw-thread: unable to initialize user-mode thread debugging\n");
1026 deactivate_uw_thread ();
1030 * target_new_objfile_hook callback.
1032 * If OBJFILE is non-null, check whether libthread.so was just loaded,
1033 * and if so, prepare for user-mode thread debugging.
1035 * If OBJFILE is null, libthread.so has gone away, so stop debugging
1036 * user-mode threads.
1038 * This function often gets called with uw_thread_active == 0.
1041 uw_thread_new_objfile (struct objfile *objfile)
1046 else if (uw_thread_active)
1047 deactivate_uw_thread ();
1049 if (target_new_objfile_chain)
1050 target_new_objfile_chain (objfile);
1054 * Initialize uw_thread_ops.
1057 init_uw_thread_ops (void)
1059 uw_thread_ops.to_shortname = "unixware-threads";
1060 uw_thread_ops.to_longname = "UnixWare threads and pthread.";
1061 uw_thread_ops.to_doc = "UnixWare threads and pthread support.";
1062 uw_thread_ops.to_attach = uw_thread_attach;
1063 uw_thread_ops.to_detach = uw_thread_detach;
1064 uw_thread_ops.to_resume = uw_thread_resume;
1065 uw_thread_ops.to_wait = uw_thread_wait;
1066 uw_thread_ops.to_fetch_registers = uw_thread_fetch_registers;
1067 uw_thread_ops.to_store_registers = uw_thread_store_registers;
1068 uw_thread_ops.to_prepare_to_store = uw_thread_prepare_to_store;
1069 uw_thread_ops.to_create_inferior = uw_thread_create_inferior;
1070 uw_thread_ops.to_kill = uw_thread_kill;
1071 uw_thread_ops.to_mourn_inferior = uw_thread_mourn_inferior;
1072 uw_thread_ops.to_can_run = uw_thread_can_run;
1073 uw_thread_ops.to_thread_alive = uw_thread_alive;
1074 uw_thread_ops.to_find_new_threads = uw_thread_find_new_threads;
1075 uw_thread_ops.to_pid_to_str = uw_thread_pid_to_str;
1076 uw_thread_ops.to_extra_thread_info = uw_extra_thread_info;
1077 uw_thread_ops.to_stratum = thread_stratum;
1078 uw_thread_ops.to_magic = OPS_MAGIC;
1082 * Module startup initialization function, automagically called by
1086 _initialize_uw_thread (void)
1088 init_uw_thread_ops ();
1089 add_target (&uw_thread_ops);
1091 procfs_suppress_run = 1;
1093 /* Notice when libthread.so gets loaded. */
1094 target_new_objfile_chain = target_new_objfile_hook;
1095 target_new_objfile_hook = uw_thread_new_objfile;