+++ /dev/null
-Support loading two libthread_db DSOs. In this case, the LinuxThreads
-and NPTL ones.
-
-Index: gdb-6.3/gdb/thread-db.c
-===================================================================
---- gdb-6.3.orig/gdb/thread-db.c 2004-11-10 10:46:24.000000000 -0500
-+++ gdb-6.3/gdb/thread-db.c 2004-11-10 11:22:34.858812426 -0500
-@@ -79,53 +79,63 @@ static td_thragent_t *thread_agent;
-
- /* Pointers to the libthread_db functions. */
-
--static td_err_e (*td_init_p) (void);
-+struct thread_db_pointers
-+{
-+ const char *filename;
-+
-+ td_err_e (*td_init_p) (void);
-
--static td_err_e (*td_ta_new_p) (struct ps_prochandle * ps,
-- td_thragent_t **ta);
--static td_err_e (*td_ta_map_id2thr_p) (const td_thragent_t *ta, thread_t pt,
-- td_thrhandle_t *__th);
--static td_err_e (*td_ta_map_lwp2thr_p) (const td_thragent_t *ta,
-- lwpid_t lwpid, td_thrhandle_t *th);
--static td_err_e (*td_ta_thr_iter_p) (const td_thragent_t *ta,
-- td_thr_iter_f *callback, void *cbdata_p,
-- td_thr_state_e state, int ti_pri,
-- sigset_t *ti_sigmask_p,
-- unsigned int ti_user_flags);
--static td_err_e (*td_ta_event_addr_p) (const td_thragent_t *ta,
-- td_event_e event, td_notify_t *ptr);
--static td_err_e (*td_ta_set_event_p) (const td_thragent_t *ta,
-- td_thr_events_t *event);
--static td_err_e (*td_ta_event_getmsg_p) (const td_thragent_t *ta,
-- td_event_msg_t *msg);
--
--static td_err_e (*td_thr_validate_p) (const td_thrhandle_t *th);
--static td_err_e (*td_thr_get_info_p) (const td_thrhandle_t *th,
-- td_thrinfo_t *infop);
--static td_err_e (*td_thr_getfpregs_p) (const td_thrhandle_t *th,
-- gdb_prfpregset_t *regset);
--static td_err_e (*td_thr_getgregs_p) (const td_thrhandle_t *th,
-- prgregset_t gregs);
--static td_err_e (*td_thr_setfpregs_p) (const td_thrhandle_t *th,
-- const gdb_prfpregset_t *fpregs);
--static td_err_e (*td_thr_setgregs_p) (const td_thrhandle_t *th,
-- prgregset_t gregs);
--static td_err_e (*td_thr_event_enable_p) (const td_thrhandle_t *th,
-- int event);
--
--static td_err_e (*td_thr_tls_get_addr_p) (const td_thrhandle_t *th,
-- void *map_address,
-- size_t offset, void **address);
-+ td_err_e (*td_ta_new_p) (struct ps_prochandle * ps,
-+ td_thragent_t **ta);
-+ td_err_e (*td_ta_map_id2thr_p) (const td_thragent_t *ta, thread_t pt,
-+ td_thrhandle_t *__th);
-+ td_err_e (*td_ta_map_lwp2thr_p) (const td_thragent_t *ta,
-+ lwpid_t lwpid, td_thrhandle_t *th);
-+
-+ td_err_e (*td_ta_thr_iter_p) (const td_thragent_t *ta,
-+ td_thr_iter_f *callback, void *cbdata_p,
-+ td_thr_state_e state, int ti_pri,
-+ sigset_t *ti_sigmask_p,
-+ unsigned int ti_user_flags);
-+ td_err_e (*td_ta_event_addr_p) (const td_thragent_t *ta,
-+ td_event_e event, td_notify_t *ptr);
-+ td_err_e (*td_ta_set_event_p) (const td_thragent_t *ta,
-+ td_thr_events_t *event);
-+ td_err_e (*td_ta_event_getmsg_p) (const td_thragent_t *ta,
-+ td_event_msg_t *msg);
-+
-+ td_err_e (*td_thr_validate_p) (const td_thrhandle_t *th);
-+ td_err_e (*td_thr_get_info_p) (const td_thrhandle_t *th,
-+ td_thrinfo_t *infop);
-+ td_err_e (*td_thr_getfpregs_p) (const td_thrhandle_t *th,
-+ gdb_prfpregset_t *regset);
-+ td_err_e (*td_thr_getgregs_p) (const td_thrhandle_t *th,
-+ prgregset_t gregs);
-+ td_err_e (*td_thr_setfpregs_p) (const td_thrhandle_t *th,
-+ const gdb_prfpregset_t *fpregs);
-+ td_err_e (*td_thr_setgregs_p) (const td_thrhandle_t *th,
-+ prgregset_t gregs);
-+ td_err_e (*td_thr_event_enable_p) (const td_thrhandle_t *th,
-+ int event);
-+
-+ td_err_e (*td_thr_tls_get_addr_p) (const td_thrhandle_t *th,
-+ void *map_address,
-+ size_t offset, void **address);
-+
-+ struct thread_db_pointers *next;
-+};
-
- /* Location of the thread creation event breakpoint. The code at this
- location in the child process will be called by the pthread library
- whenever a new thread is created. By setting a special breakpoint
- at this location, GDB can detect when a new thread is created. We
- obtain this location via the td_ta_event_addr call. */
--static CORE_ADDR td_create_bp_addr;
-+CORE_ADDR td_create_bp_addr;
-
- /* Location of the thread death event breakpoint. */
--static CORE_ADDR td_death_bp_addr;
-+CORE_ADDR td_death_bp_addr;
-+
-+static struct thread_db_pointers *current_pointers, *all_pointers;
-
- /* Prototypes for local functions. */
- static void thread_db_find_new_threads (void);
-@@ -262,7 +272,7 @@ thread_get_info_callback (const td_thrha
- struct thread_info *thread_info;
- ptid_t thread_ptid;
-
-- err = td_thr_get_info_p (thp, &ti);
-+ err = current_pointers->td_thr_get_info_p (thp, &ti);
- if (err != TD_OK)
- error ("thread_get_info_callback: cannot get thread info: %s",
- thread_db_err_str (err));
-@@ -316,8 +326,9 @@ thread_db_map_id2thr (struct thread_info
- if (thread_info->private->th_valid)
- return;
-
-- err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (thread_info->ptid),
-- &thread_info->private->th);
-+ err = current_pointers->td_ta_map_id2thr_p (thread_agent,
-+ GET_THREAD (thread_info->ptid),
-+ &thread_info->private->th);
- if (err != TD_OK)
- {
- if (fatal)
-@@ -340,8 +351,8 @@ thread_db_get_info (struct thread_info *
- if (!thread_info->private->th_valid)
- thread_db_map_id2thr (thread_info, 1);
-
-- err =
-- td_thr_get_info_p (&thread_info->private->th, &thread_info->private->ti);
-+ err = current_pointers->td_thr_get_info_p (&thread_info->private->th,
-+ &thread_info->private->ti);
- if (err != TD_OK)
- error ("thread_db_get_info: cannot get thread info: %s",
- thread_db_err_str (err));
-@@ -365,7 +376,8 @@ thread_from_lwp (ptid_t ptid)
-
- gdb_assert (is_lwp (ptid));
-
-- err = td_ta_map_lwp2thr_p (thread_agent, GET_LWP (ptid), &th);
-+ err = current_pointers->td_ta_map_lwp2thr_p (thread_agent, GET_LWP (ptid),
-+ &th);
- if (err != TD_OK)
- error ("Cannot find user-level thread for LWP %ld: %s",
- GET_LWP (ptid), thread_db_err_str (err));
-@@ -420,85 +432,102 @@ verbose_dlsym (void *handle, const char
- return sym;
- }
-
--static int
--thread_db_load (void)
-+static struct thread_db_pointers *
-+thread_db_load (const char *name)
- {
-+ struct thread_db_pointers *ptrs;
-+ Dl_info info;
- void *handle;
- td_err_e err;
-
-- handle = dlopen (LIBTHREAD_DB_SO, RTLD_NOW);
-+ ptrs = xcalloc (1, sizeof (struct thread_db_pointers));
-+
-+ handle = dlopen (name, RTLD_NOW);
- if (handle == NULL)
- {
-- fprintf_filtered (gdb_stderr, "\n\ndlopen failed on '%s' - %s\n",
-- LIBTHREAD_DB_SO, dlerror ());
-- fprintf_filtered (gdb_stderr,
-- "GDB will not be able to debug pthreads.\n\n");
-+ if (all_pointers == NULL)
-+ {
-+ fprintf_filtered (gdb_stderr, "\n\ndlopen failed on '%s' - %s\n",
-+ name, dlerror ());
-+ fprintf_filtered (gdb_stderr,
-+ "GDB will not be able to debug pthreads.\n\n");
-+ }
- return 0;
- }
-
- /* Initialize pointers to the dynamic library functions we will use.
- Essential functions first. */
-
-- td_init_p = verbose_dlsym (handle, "td_init");
-- if (td_init_p == NULL)
-+ ptrs->td_init_p = verbose_dlsym (handle, "td_init");
-+ if (ptrs->td_init_p == NULL)
- return 0;
-
-- td_ta_new_p = verbose_dlsym (handle, "td_ta_new");
-- if (td_ta_new_p == NULL)
-+ ptrs->td_ta_new_p = verbose_dlsym (handle, "td_ta_new");
-+ if (ptrs->td_ta_new_p == NULL)
- return 0;
-
-- td_ta_map_id2thr_p = verbose_dlsym (handle, "td_ta_map_id2thr");
-- if (td_ta_map_id2thr_p == NULL)
-+ ptrs->td_ta_map_id2thr_p = verbose_dlsym (handle, "td_ta_map_id2thr");
-+ if (ptrs->td_ta_map_id2thr_p == NULL)
- return 0;
-
-- td_ta_map_lwp2thr_p = verbose_dlsym (handle, "td_ta_map_lwp2thr");
-- if (td_ta_map_lwp2thr_p == NULL)
-+ ptrs->td_ta_map_lwp2thr_p = verbose_dlsym (handle, "td_ta_map_lwp2thr");
-+ if (ptrs->td_ta_map_lwp2thr_p == NULL)
- return 0;
-
-- td_ta_thr_iter_p = verbose_dlsym (handle, "td_ta_thr_iter");
-- if (td_ta_thr_iter_p == NULL)
-+ ptrs->td_ta_thr_iter_p = verbose_dlsym (handle, "td_ta_thr_iter");
-+ if (ptrs->td_ta_thr_iter_p == NULL)
- return 0;
-
-- td_thr_validate_p = verbose_dlsym (handle, "td_thr_validate");
-- if (td_thr_validate_p == NULL)
-+ ptrs->td_thr_validate_p = verbose_dlsym (handle, "td_thr_validate");
-+ if (ptrs->td_thr_validate_p == NULL)
- return 0;
-
-- td_thr_get_info_p = verbose_dlsym (handle, "td_thr_get_info");
-- if (td_thr_get_info_p == NULL)
-+ ptrs->td_thr_get_info_p = verbose_dlsym (handle, "td_thr_get_info");
-+ if (ptrs->td_thr_get_info_p == NULL)
- return 0;
-
-- td_thr_getfpregs_p = verbose_dlsym (handle, "td_thr_getfpregs");
-- if (td_thr_getfpregs_p == NULL)
-+ ptrs->td_thr_getfpregs_p = verbose_dlsym (handle, "td_thr_getfpregs");
-+ if (ptrs->td_thr_getfpregs_p == NULL)
- return 0;
-
-- td_thr_getgregs_p = verbose_dlsym (handle, "td_thr_getgregs");
-- if (td_thr_getgregs_p == NULL)
-+ ptrs->td_thr_getgregs_p = verbose_dlsym (handle, "td_thr_getgregs");
-+ if (ptrs->td_thr_getgregs_p == NULL)
- return 0;
-
-- td_thr_setfpregs_p = verbose_dlsym (handle, "td_thr_setfpregs");
-- if (td_thr_setfpregs_p == NULL)
-+ ptrs->td_thr_setfpregs_p = verbose_dlsym (handle, "td_thr_setfpregs");
-+ if (ptrs->td_thr_setfpregs_p == NULL)
- return 0;
-
-- td_thr_setgregs_p = verbose_dlsym (handle, "td_thr_setgregs");
-- if (td_thr_setgregs_p == NULL)
-+ ptrs->td_thr_setgregs_p = verbose_dlsym (handle, "td_thr_setgregs");
-+ if (ptrs->td_thr_setgregs_p == NULL)
- return 0;
-
- /* Initialize the library. */
-- err = td_init_p ();
-+ err = ptrs->td_init_p ();
- if (err != TD_OK)
- {
- warning ("Cannot initialize libthread_db: %s", thread_db_err_str (err));
-+ xfree (ptrs);
- return 0;
- }
-
- /* These are not essential. */
-- td_ta_event_addr_p = dlsym (handle, "td_ta_event_addr");
-- td_ta_set_event_p = dlsym (handle, "td_ta_set_event");
-- td_ta_event_getmsg_p = dlsym (handle, "td_ta_event_getmsg");
-- td_thr_event_enable_p = dlsym (handle, "td_thr_event_enable");
-- td_thr_tls_get_addr_p = dlsym (handle, "td_thr_tls_get_addr");
-+ ptrs->td_ta_event_addr_p = dlsym (handle, "td_ta_event_addr");
-+ ptrs->td_ta_set_event_p = dlsym (handle, "td_ta_set_event");
-+ ptrs->td_ta_event_getmsg_p = dlsym (handle, "td_ta_event_getmsg");
-+ ptrs->td_thr_event_enable_p = dlsym (handle, "td_thr_event_enable");
-+ ptrs->td_thr_tls_get_addr_p = dlsym (handle, "td_thr_tls_get_addr");
-+
-+ if (dladdr (ptrs->td_ta_new_p, &info) != 0)
-+ ptrs->filename = info.dli_fname;
-+
-+ /* Try dlinfo? */
-+
-+ if (ptrs->filename == NULL)
-+ /* Paranoid - don't let a NULL path slip through. */
-+ ptrs->filename = name;
-
-- return 1;
-+ return ptrs;
- }
-
- static td_err_e
-@@ -508,7 +537,7 @@ enable_thread_event (td_thragent_t *thre
- td_err_e err;
-
- /* Get the breakpoint address for thread EVENT. */
-- err = td_ta_event_addr_p (thread_agent, event, ¬ify);
-+ err = current_pointers->td_ta_event_addr_p (thread_agent, event, ¬ify);
- if (err != TD_OK)
- return err;
-
-@@ -534,8 +563,10 @@ enable_thread_event_reporting (void)
-
- /* We cannot use the thread event reporting facility if these
- functions aren't available. */
-- if (td_ta_event_addr_p == NULL || td_ta_set_event_p == NULL
-- || td_ta_event_getmsg_p == NULL || td_thr_event_enable_p == NULL)
-+ if (current_pointers->td_ta_event_addr_p == NULL
-+ || current_pointers->td_ta_set_event_p == NULL
-+ || current_pointers->td_ta_event_getmsg_p == NULL
-+ || current_pointers->td_thr_event_enable_p == NULL)
- return;
-
- /* Set the process wide mask saying which events we're interested in. */
-@@ -552,7 +583,7 @@ enable_thread_event_reporting (void)
- #endif
- td_event_addset (&events, TD_DEATH);
-
-- err = td_ta_set_event_p (thread_agent, &events);
-+ err = current_pointers->td_ta_set_event_p (thread_agent, &events);
- if (err != TD_OK)
- {
- warning ("Unable to set global thread event mask: %s",
-@@ -592,7 +623,7 @@ disable_thread_event_reporting (void)
- /* Set the process wide mask saying we aren't interested in any
- events anymore. */
- td_event_emptyset (&events);
-- td_ta_set_event_p (thread_agent, &events);
-+ current_pointers->td_ta_set_event_p (thread_agent, &events);
-
- /* Delete thread event breakpoints, if any. */
- remove_thread_event_breakpoints ();
-@@ -635,7 +666,6 @@ check_thread_signals (void)
- static void
- check_for_thread_db (void)
- {
-- td_err_e err;
- static int already_loaded;
-
- /* First time through, report that libthread_db was successfuly
-@@ -644,19 +674,8 @@ check_for_thread_db (void)
-
- if (!already_loaded)
- {
-- Dl_info info;
-- const char *library = NULL;
-- if (dladdr ((*td_ta_new_p), &info) != 0)
-- library = info.dli_fname;
--
-- /* Try dlinfo? */
--
-- if (library == NULL)
-- /* Paranoid - don't let a NULL path slip through. */
-- library = LIBTHREAD_DB_SO;
--
- printf_unfiltered ("Using host libthread_db library \"%s\".\n",
-- library);
-+ all_pointers->filename);
- already_loaded = 1;
- }
-
-@@ -674,28 +693,34 @@ check_for_thread_db (void)
- proc_handle.pid = GET_PID (inferior_ptid);
-
- /* Now attempt to open a connection to the thread library. */
-- err = td_ta_new_p (&proc_handle, &thread_agent);
-- switch (err)
-+ for (current_pointers = all_pointers;
-+ current_pointers != NULL;
-+ current_pointers = current_pointers->next)
- {
-- case TD_NOLIBTHREAD:
-- /* No thread library was detected. */
-- break;
--
-- case TD_OK:
-- printf_unfiltered ("[Thread debugging using libthread_db enabled]\n");
-+ td_err_e err;
-+ err = current_pointers->td_ta_new_p (&proc_handle, &thread_agent);
-+ switch (err)
-+ {
-+ case TD_NOLIBTHREAD:
-+ /* No thread library was detected. */
-+ break;
-
-- /* The thread library was detected. Activate the thread_db target. */
-- push_target (&thread_db_ops);
-- using_thread_db = 1;
-+ case TD_OK:
-+ printf_unfiltered ("[Thread debugging using libthread_db enabled]\n");
-
-- enable_thread_event_reporting ();
-- thread_db_find_new_threads ();
-- break;
-+ /* The thread library was detected. Activate the thread_db target. */
-+ push_target (&thread_db_ops);
-+ using_thread_db = 1;
-+
-+ enable_thread_event_reporting ();
-+ thread_db_find_new_threads ();
-+ return;
-
-- default:
-- warning ("Cannot initialize thread debugging library: %s",
-- thread_db_err_str (err));
-- break;
-+ default:
-+ warning ("Cannot initialize thread debugging library: %s",
-+ thread_db_err_str (err));
-+ break;
-+ }
- }
- }
-
-@@ -766,7 +791,7 @@ attach_thread (ptid_t ptid, const td_thr
- #endif
-
- /* Enable thread event reporting for this thread. */
-- err = td_thr_event_enable_p (th_p, 1);
-+ err = current_pointers->td_thr_event_enable_p (th_p, 1);
- if (err != TD_OK)
- error ("Cannot enable thread event reporting for %s: %s",
- target_pid_to_str (ptid), thread_db_err_str (err));
-@@ -892,7 +917,7 @@ check_event (ptid_t ptid)
-
- do
- {
-- err = td_ta_event_getmsg_p (thread_agent, &msg);
-+ err = current_pointers->td_ta_event_getmsg_p (thread_agent, &msg);
- if (err != TD_OK)
- {
- if (err == TD_NOMSG)
-@@ -902,7 +927,7 @@ check_event (ptid_t ptid)
- thread_db_err_str (err));
- }
-
-- err = td_thr_get_info_p (msg.th_p, &ti);
-+ err = current_pointers->td_thr_get_info_p (msg.th_p, &ti);
- if (err != TD_OK)
- error ("Cannot get thread info: %s", thread_db_err_str (err));
-
-@@ -1015,12 +1040,14 @@ thread_db_fetch_registers (int regno)
- thread_info = find_thread_pid (inferior_ptid);
- thread_db_map_id2thr (thread_info, 1);
-
-- err = td_thr_getgregs_p (&thread_info->private->th, gregset);
-+ err = current_pointers->td_thr_getgregs_p (&thread_info->private->th,
-+ gregset);
- if (err != TD_OK)
- error ("Cannot fetch general-purpose registers for thread %ld: %s",
- (long) GET_THREAD (inferior_ptid), thread_db_err_str (err));
-
-- err = td_thr_getfpregs_p (&thread_info->private->th, &fpregset);
-+ err = current_pointers->td_thr_getfpregs_p (&thread_info->private->th,
-+ &fpregset);
- if (err != TD_OK)
- error ("Cannot get floating-point registers for thread %ld: %s",
- (long) GET_THREAD (inferior_ptid), thread_db_err_str (err));
-@@ -1062,11 +1089,13 @@ thread_db_store_registers (int regno)
- fill_gregset ((gdb_gregset_t *) gregset, -1);
- fill_fpregset (&fpregset, -1);
-
-- err = td_thr_setgregs_p (&thread_info->private->th, gregset);
-+ err = current_pointers->td_thr_setgregs_p (&thread_info->private->th,
-+ gregset);
- if (err != TD_OK)
- error ("Cannot store general-purpose registers for thread %ld: %s",
- (long) GET_THREAD (inferior_ptid), thread_db_err_str (err));
-- err = td_thr_setfpregs_p (&thread_info->private->th, &fpregset);
-+ err = current_pointers->td_thr_setfpregs_p (&thread_info->private->th,
-+ &fpregset);
- if (err != TD_OK)
- error ("Cannot store floating-point registers for thread %ld: %s",
- (long) GET_THREAD (inferior_ptid), thread_db_err_str (err));
-@@ -1136,15 +1165,14 @@ thread_db_thread_alive (ptid_t ptid)
- if (!thread_info->private->th_valid)
- return 0;
-
-- err = td_thr_validate_p (&thread_info->private->th);
-+ err = current_pointers->td_thr_validate_p (&thread_info->private->th);
- if (err != TD_OK)
- return 0;
-
- if (!thread_info->private->ti_valid)
- {
-- err =
-- td_thr_get_info_p (&thread_info->private->th,
-- &thread_info->private->ti);
-+ err = current_pointers->td_thr_get_info_p
-+ (&thread_info->private->th, &thread_info->private->ti);
- if (err != TD_OK)
- return 0;
- thread_info->private->ti_valid = 1;
-@@ -1170,7 +1198,7 @@ find_new_threads_callback (const td_thrh
- td_err_e err;
- ptid_t ptid;
-
-- err = td_thr_get_info_p (th_p, &ti);
-+ err = current_pointers->td_thr_get_info_p (th_p, &ti);
- if (err != TD_OK)
- error ("find_new_threads_callback: cannot get thread info: %s",
- thread_db_err_str (err));
-@@ -1192,9 +1220,10 @@ thread_db_find_new_threads (void)
- td_err_e err;
-
- /* Iterate over all user-space threads to discover new threads. */
-- err = td_ta_thr_iter_p (thread_agent, find_new_threads_callback, NULL,
-- TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY,
-- TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
-+ err = current_pointers->td_ta_thr_iter_p
-+ (thread_agent, find_new_threads_callback, NULL,
-+ TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY,
-+ TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
- if (err != TD_OK)
- error ("Cannot find new threads: %s", thread_db_err_str (err));
- }
-@@ -1257,7 +1286,7 @@ thread_db_get_thread_local_address (ptid
- struct thread_info *thread_info;
-
- /* glibc doesn't provide the needed interface. */
-- if (!td_thr_tls_get_addr_p)
-+ if (!current_pointers->td_thr_tls_get_addr_p)
- error ("Cannot find thread-local variables in this thread library.");
-
- /* Get the address of the link map for this objfile. */
-@@ -1279,8 +1308,8 @@ thread_db_get_thread_local_address (ptid
- thread_db_map_id2thr (thread_info, 1);
-
- /* Finally, get the address of the variable. */
-- err = td_thr_tls_get_addr_p (&thread_info->private->th, (void *) lm,
-- offset, &address);
-+ err = current_pointers->td_thr_tls_get_addr_p
-+ (&thread_info->private->th, (void *) lm, offset, &address);
-
- #ifdef THREAD_DB_HAS_TD_NOTALLOC
- /* The memory hasn't been allocated, yet. */
-@@ -1360,17 +1389,49 @@ init_thread_db_ops (void)
- void
- _initialize_thread_db (void)
- {
-+ struct thread_db_pointers *ptrs;
-+ const char *p;
-+
- /* Only initialize the module if we can load libthread_db. */
-- if (thread_db_load ())
-- {
-- init_thread_db_ops ();
-- add_target (&thread_db_ops);
-+ ptrs = thread_db_load (LIBTHREAD_DB_SO);
-+ if (ptrs == NULL)
-+ return;
-+
-+ all_pointers = ptrs;
-
-- /* Add ourselves to objfile event chain. */
-- target_new_objfile_chain = deprecated_target_new_objfile_hook;
-- deprecated_target_new_objfile_hook = thread_db_new_objfile;
-+ /* Some GNU/Linux systems have more than one binary-compatible copy
-+ of libthread_db. If we can find a second one, load that too.
-+ The inferior may force the use of a different threading package
-+ than we expect. Our guess for the location is somewhat hokey:
-+ strip out anything between /lib (or /lib64) and LIBTHREAD_DB_SO.
-+ If we loaded the NPTL libthread_db by default, this may find us
-+ the LinuxThreads copy. */
-+ p = strrchr (ptrs->filename, '/');
-+ while (p != NULL && p > ptrs->filename)
-+ {
-+ const char *component;
-
-- /* Register ourselves for the new inferior observer. */
-- observer_attach_inferior_created (check_for_thread_db_observer);
-+ component = memrchr (ptrs->filename, '/', p - ptrs->filename);
-+ if (component != NULL && strncmp (component, "/lib", 4) == 0)
-+ {
-+ char *new_name = xmalloc (p - ptrs->filename + 2
-+ + strlen (LIBTHREAD_DB_SO));
-+ memcpy (new_name, ptrs->filename, p - ptrs->filename + 1);
-+ strcpy (new_name + (p - ptrs->filename) + 1, LIBTHREAD_DB_SO);
-+ ptrs->next = thread_db_load (new_name);
-+ xfree (new_name);
-+ break;
-+ }
-+ p = component;
- }
-+
-+ init_thread_db_ops ();
-+ add_target (&thread_db_ops);
-+
-+ /* Add ourselves to objfile event chain. */
-+ target_new_objfile_chain = deprecated_target_new_objfile_hook;
-+ deprecated_target_new_objfile_hook = thread_db_new_objfile;
-+
-+ /* Register ourselves for the new inferior observer. */
-+ observer_attach_inferior_created (check_for_thread_db_observer);
- }
projects / openwrt.git / blobdiff