/* Target operations for the remote server for GDB.
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/* Target operations for the remote server for GDB.
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Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009, 2010
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Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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Contributed by MontaVista Software.
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Contributed by MontaVista Software.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include "server.h"
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struct target_ops *the_target;
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struct target_ops *the_target;
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void
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void
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set_desired_inferior (int use_general)
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set_desired_inferior (int use_general)
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{
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{
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struct thread_info *found;
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struct thread_info *found;
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if (use_general == 1)
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if (use_general == 1)
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found = find_thread_ptid (general_thread);
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found = find_thread_ptid (general_thread);
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else
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else
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{
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{
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found = NULL;
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found = NULL;
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/* If we are continuing any (all) thread(s), use step_thread
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/* If we are continuing any (all) thread(s), use step_thread
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to decide which thread to step and/or send the specified
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to decide which thread to step and/or send the specified
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signal to. */
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signal to. */
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if ((!ptid_equal (step_thread, null_ptid)
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if ((!ptid_equal (step_thread, null_ptid)
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&& !ptid_equal (step_thread, minus_one_ptid))
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&& !ptid_equal (step_thread, minus_one_ptid))
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&& (ptid_equal (cont_thread, null_ptid)
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&& (ptid_equal (cont_thread, null_ptid)
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|| ptid_equal (cont_thread, minus_one_ptid)))
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|| ptid_equal (cont_thread, minus_one_ptid)))
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found = find_thread_ptid (step_thread);
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found = find_thread_ptid (step_thread);
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if (found == NULL)
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if (found == NULL)
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found = find_thread_ptid (cont_thread);
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found = find_thread_ptid (cont_thread);
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}
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}
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if (found == NULL)
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if (found == NULL)
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current_inferior = (struct thread_info *) all_threads.head;
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current_inferior = (struct thread_info *) all_threads.head;
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else
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else
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current_inferior = found;
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current_inferior = found;
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}
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}
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int
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int
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read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
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read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
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{
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{
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int res;
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int res;
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res = (*the_target->read_memory) (memaddr, myaddr, len);
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res = (*the_target->read_memory) (memaddr, myaddr, len);
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check_mem_read (memaddr, myaddr, len);
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check_mem_read (memaddr, myaddr, len);
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return res;
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return res;
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}
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}
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int
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int
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write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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int len)
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int len)
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{
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{
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/* Lacking cleanups, there is some potential for a memory leak if the
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/* Lacking cleanups, there is some potential for a memory leak if the
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write fails and we go through error(). Make sure that no more than
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write fails and we go through error(). Make sure that no more than
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one buffer is ever pending by making BUFFER static. */
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one buffer is ever pending by making BUFFER static. */
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static unsigned char *buffer = 0;
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static unsigned char *buffer = 0;
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int res;
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int res;
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if (buffer != NULL)
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if (buffer != NULL)
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free (buffer);
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free (buffer);
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buffer = xmalloc (len);
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buffer = xmalloc (len);
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memcpy (buffer, myaddr, len);
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memcpy (buffer, myaddr, len);
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check_mem_write (memaddr, buffer, len);
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check_mem_write (memaddr, buffer, len);
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res = (*the_target->write_memory) (memaddr, buffer, len);
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res = (*the_target->write_memory) (memaddr, buffer, len);
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free (buffer);
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free (buffer);
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buffer = NULL;
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buffer = NULL;
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return res;
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return res;
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}
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}
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ptid_t
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ptid_t
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mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
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mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
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int connected_wait)
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int connected_wait)
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{
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{
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ptid_t ret;
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ptid_t ret;
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if (connected_wait)
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if (connected_wait)
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server_waiting = 1;
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server_waiting = 1;
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ret = (*the_target->wait) (ptid, ourstatus, options);
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ret = (*the_target->wait) (ptid, ourstatus, options);
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if (ourstatus->kind == TARGET_WAITKIND_EXITED)
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if (ourstatus->kind == TARGET_WAITKIND_EXITED)
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fprintf (stderr,
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fprintf (stderr,
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"\nChild exited with status %d\n", ourstatus->value.sig);
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"\nChild exited with status %d\n", ourstatus->value.sig);
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else if (ourstatus->kind == TARGET_WAITKIND_SIGNALLED)
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else if (ourstatus->kind == TARGET_WAITKIND_SIGNALLED)
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fprintf (stderr, "\nChild terminated with signal = 0x%x (%s)\n",
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fprintf (stderr, "\nChild terminated with signal = 0x%x (%s)\n",
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target_signal_to_host (ourstatus->value.sig),
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target_signal_to_host (ourstatus->value.sig),
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target_signal_to_name (ourstatus->value.sig));
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target_signal_to_name (ourstatus->value.sig));
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if (connected_wait)
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if (connected_wait)
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server_waiting = 0;
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server_waiting = 0;
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return ret;
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return ret;
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}
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}
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int
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int
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start_non_stop (int nonstop)
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start_non_stop (int nonstop)
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{
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{
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if (the_target->start_non_stop == NULL)
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if (the_target->start_non_stop == NULL)
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{
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{
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if (nonstop)
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if (nonstop)
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return -1;
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return -1;
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else
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else
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return 0;
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return 0;
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}
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}
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return (*the_target->start_non_stop) (nonstop);
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return (*the_target->start_non_stop) (nonstop);
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}
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}
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void
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void
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set_target_ops (struct target_ops *target)
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set_target_ops (struct target_ops *target)
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{
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{
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the_target = (struct target_ops *) xmalloc (sizeof (*the_target));
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the_target = (struct target_ops *) xmalloc (sizeof (*the_target));
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memcpy (the_target, target, sizeof (*the_target));
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memcpy (the_target, target, sizeof (*the_target));
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}
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}
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/* Convert pid to printable format. */
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/* Convert pid to printable format. */
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const char *
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const char *
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target_pid_to_str (ptid_t ptid)
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target_pid_to_str (ptid_t ptid)
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{
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{
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static char buf[80];
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static char buf[80];
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if (ptid_equal (ptid, minus_one_ptid))
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if (ptid_equal (ptid, minus_one_ptid))
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snprintf (buf, sizeof (buf), "<all threads>");
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snprintf (buf, sizeof (buf), "<all threads>");
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else if (ptid_equal (ptid, null_ptid))
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else if (ptid_equal (ptid, null_ptid))
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snprintf (buf, sizeof (buf), "<null thread>");
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snprintf (buf, sizeof (buf), "<null thread>");
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else if (ptid_get_tid (ptid) != 0)
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else if (ptid_get_tid (ptid) != 0)
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snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
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snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
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ptid_get_pid (ptid), ptid_get_tid (ptid));
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ptid_get_pid (ptid), ptid_get_tid (ptid));
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else if (ptid_get_lwp (ptid) != 0)
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else if (ptid_get_lwp (ptid) != 0)
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snprintf (buf, sizeof (buf), "LWP %d.%ld",
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snprintf (buf, sizeof (buf), "LWP %d.%ld",
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ptid_get_pid (ptid), ptid_get_lwp (ptid));
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ptid_get_pid (ptid), ptid_get_lwp (ptid));
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else
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else
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snprintf (buf, sizeof (buf), "Process %d",
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snprintf (buf, sizeof (buf), "Process %d",
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ptid_get_pid (ptid));
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ptid_get_pid (ptid));
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return buf;
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return buf;
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}
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}
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