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Diffstat (limited to 'contrib/gdb/gdb/gdbserver/thread-db.c')
-rw-r--r--contrib/gdb/gdb/gdbserver/thread-db.c342
1 files changed, 0 insertions, 342 deletions
diff --git a/contrib/gdb/gdb/gdbserver/thread-db.c b/contrib/gdb/gdb/gdbserver/thread-db.c
deleted file mode 100644
index f3d57a54d622..000000000000
--- a/contrib/gdb/gdb/gdbserver/thread-db.c
+++ /dev/null
@@ -1,342 +0,0 @@
-/* Thread management interface, for the remote server for GDB.
- Copyright 2002
- Free Software Foundation, Inc.
-
- Contributed by MontaVista Software.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include "server.h"
-
-#include "linux-low.h"
-
-extern int debug_threads;
-
-#ifdef HAVE_THREAD_DB_H
-#include <thread_db.h>
-#endif
-
-/* Correct for all GNU/Linux targets (for quite some time). */
-#define GDB_GREGSET_T elf_gregset_t
-#define GDB_FPREGSET_T elf_fpregset_t
-
-#ifndef HAVE_ELF_FPREGSET_T
-/* Make sure we have said types. Not all platforms bring in <linux/elf.h>
- via <sys/procfs.h>. */
-#ifdef HAVE_LINUX_ELF_H
-#include <linux/elf.h>
-#endif
-#endif
-
-#include "../gdb_proc_service.h"
-
-/* Structure that identifies the child process for the
- <proc_service.h> interface. */
-static struct ps_prochandle proc_handle;
-
-/* Connection to the libthread_db library. */
-static td_thragent_t *thread_agent;
-
-static int find_new_threads_callback (const td_thrhandle_t *th_p, void *data);
-
-static char *
-thread_db_err_str (td_err_e err)
-{
- static char buf[64];
-
- switch (err)
- {
- case TD_OK:
- return "generic 'call succeeded'";
- case TD_ERR:
- return "generic error";
- case TD_NOTHR:
- return "no thread to satisfy query";
- case TD_NOSV:
- return "no sync handle to satisfy query";
- case TD_NOLWP:
- return "no LWP to satisfy query";
- case TD_BADPH:
- return "invalid process handle";
- case TD_BADTH:
- return "invalid thread handle";
- case TD_BADSH:
- return "invalid synchronization handle";
- case TD_BADTA:
- return "invalid thread agent";
- case TD_BADKEY:
- return "invalid key";
- case TD_NOMSG:
- return "no event message for getmsg";
- case TD_NOFPREGS:
- return "FPU register set not available";
- case TD_NOLIBTHREAD:
- return "application not linked with libthread";
- case TD_NOEVENT:
- return "requested event is not supported";
- case TD_NOCAPAB:
- return "capability not available";
- case TD_DBERR:
- return "debugger service failed";
- case TD_NOAPLIC:
- return "operation not applicable to";
- case TD_NOTSD:
- return "no thread-specific data for this thread";
- case TD_MALLOC:
- return "malloc failed";
- case TD_PARTIALREG:
- return "only part of register set was written/read";
- case TD_NOXREGS:
- return "X register set not available for this thread";
- default:
- snprintf (buf, sizeof (buf), "unknown thread_db error '%d'", err);
- return buf;
- }
-}
-
-#if 0
-static char *
-thread_db_state_str (td_thr_state_e state)
-{
- static char buf[64];
-
- switch (state)
- {
- case TD_THR_STOPPED:
- return "stopped by debugger";
- case TD_THR_RUN:
- return "runnable";
- case TD_THR_ACTIVE:
- return "active";
- case TD_THR_ZOMBIE:
- return "zombie";
- case TD_THR_SLEEP:
- return "sleeping";
- case TD_THR_STOPPED_ASLEEP:
- return "stopped by debugger AND blocked";
- default:
- snprintf (buf, sizeof (buf), "unknown thread_db state %d", state);
- return buf;
- }
-}
-#endif
-
-static void
-thread_db_create_event (CORE_ADDR where)
-{
- td_event_msg_t msg;
- td_err_e err;
- struct inferior_linux_data *tdata;
-
- if (debug_threads)
- fprintf (stderr, "Thread creation event.\n");
-
- tdata = inferior_target_data (current_inferior);
-
- /* FIXME: This assumes we don't get another event.
- In the LinuxThreads implementation, this is safe,
- because all events come from the manager thread
- (except for its own creation, of course). */
- err = td_ta_event_getmsg (thread_agent, &msg);
- if (err != TD_OK)
- fprintf (stderr, "thread getmsg err: %s\n",
- thread_db_err_str (err));
-
- /* msg.event == TD_EVENT_CREATE */
-
- find_new_threads_callback (msg.th_p, NULL);
-}
-
-#if 0
-static void
-thread_db_death_event (CORE_ADDR where)
-{
- if (debug_threads)
- fprintf (stderr, "Thread death event.\n");
-}
-#endif
-
-static int
-thread_db_enable_reporting ()
-{
- td_thr_events_t events;
- td_notify_t notify;
- td_err_e err;
-
- /* Set the process wide mask saying which events we're interested in. */
- td_event_emptyset (&events);
- td_event_addset (&events, TD_CREATE);
-
-#if 0
- /* This is reported to be broken in glibc 2.1.3. A different approach
- will be necessary to support that. */
- td_event_addset (&events, TD_DEATH);
-#endif
-
- err = td_ta_set_event (thread_agent, &events);
- if (err != TD_OK)
- {
- warning ("Unable to set global thread event mask: %s",
- thread_db_err_str (err));
- return 0;
- }
-
- /* Get address for thread creation breakpoint. */
- err = td_ta_event_addr (thread_agent, TD_CREATE, &notify);
- if (err != TD_OK)
- {
- warning ("Unable to get location for thread creation breakpoint: %s",
- thread_db_err_str (err));
- return 0;
- }
- set_breakpoint_at ((CORE_ADDR) (unsigned long) notify.u.bptaddr,
- thread_db_create_event);
-
-#if 0
- /* Don't concern ourselves with reported thread deaths, only
- with actual thread deaths (via wait). */
-
- /* Get address for thread death breakpoint. */
- err = td_ta_event_addr (thread_agent, TD_DEATH, &notify);
- if (err != TD_OK)
- {
- warning ("Unable to get location for thread death breakpoint: %s",
- thread_db_err_str (err));
- return;
- }
- set_breakpoint_at ((CORE_ADDR) (unsigned long) notify.u.bptaddr,
- thread_db_death_event);
-#endif
-
- return 1;
-}
-
-static void
-maybe_attach_thread (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p)
-{
- td_err_e err;
- struct thread_info *inferior;
- struct process_info *process;
-
- /* If we are attaching to our first thread, things are a little
- different. */
- if (all_threads.head == all_threads.tail)
- {
- inferior = (struct thread_info *) all_threads.head;
- process = get_thread_process (inferior);
- if (process->thread_known == 0)
- {
- /* Switch to indexing the threads list by TID. */
- change_inferior_id (&all_threads, ti_p->ti_tid);
- goto found;
- }
- }
-
- inferior = (struct thread_info *) find_inferior_id (&all_threads,
- ti_p->ti_tid);
- if (inferior != NULL)
- return;
-
- if (debug_threads)
- fprintf (stderr, "Attaching to thread %ld (LWP %d)\n",
- ti_p->ti_tid, ti_p->ti_lid);
- linux_attach_lwp (ti_p->ti_lid, ti_p->ti_tid);
- inferior = (struct thread_info *) find_inferior_id (&all_threads,
- ti_p->ti_tid);
- if (inferior == NULL)
- {
- warning ("Could not attach to thread %ld (LWP %d)\n",
- ti_p->ti_tid, ti_p->ti_lid);
- return;
- }
-
- process = inferior_target_data (inferior);
-
-found:
- new_thread_notify (ti_p->ti_tid);
-
- process->tid = ti_p->ti_tid;
- process->lwpid = ti_p->ti_lid;
-
- process->thread_known = 1;
- err = td_thr_event_enable (th_p, 1);
- if (err != TD_OK)
- error ("Cannot enable thread event reporting for %d: %s",
- ti_p->ti_lid, thread_db_err_str (err));
-}
-
-static int
-find_new_threads_callback (const td_thrhandle_t *th_p, void *data)
-{
- td_thrinfo_t ti;
- td_err_e err;
-
- err = td_thr_get_info (th_p, &ti);
- if (err != TD_OK)
- error ("Cannot get thread info: %s", thread_db_err_str (err));
-
- /* Check for zombies. */
- if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE)
- return 0;
-
- maybe_attach_thread (th_p, &ti);
-
- return 0;
-}
-
-static void
-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 (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));
-}
-
-int
-thread_db_init ()
-{
- int err;
-
- proc_handle.pid = ((struct inferior_list_entry *)current_inferior)->id;
-
- err = td_ta_new (&proc_handle, &thread_agent);
- switch (err)
- {
- case TD_NOLIBTHREAD:
- /* No thread library was detected. */
- return 0;
-
- case TD_OK:
- /* The thread library was detected. */
-
- if (thread_db_enable_reporting () == 0)
- return 0;
- thread_db_find_new_threads ();
- return 1;
-
- default:
- warning ("error initializing thread_db library.");
- }
-
- return 0;
-}
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