mirror of
https://sourceware.org/git/binutils-gdb.git
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18d2988e5d
Now that defs.h, server.h and common-defs.h are included via the `-include` option, it is no longer necessary for source files to include them. Remove all the inclusions of these files I could find. Update the generation scripts where relevant. Change-Id: Ia026cff269c1b7ae7386dd3619bc9bb6a5332837 Approved-By: Pedro Alves <pedro@palves.net>
847 lines
17 KiB
C++
847 lines
17 KiB
C++
/* Target operations for the remote server for GDB.
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Copyright (C) 2002-2024 Free Software Foundation, Inc.
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Contributed by MontaVista Software.
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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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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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(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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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "tracepoint.h"
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#include "gdbsupport/byte-vector.h"
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#include "hostio.h"
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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process_stratum_target *the_target;
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/* See target.h. */
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bool
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set_desired_thread ()
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{
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client_state &cs = get_client_state ();
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thread_info *found = find_thread_ptid (cs.general_thread);
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if (found == nullptr)
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{
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process_info *proc = find_process_pid (cs.general_thread.pid ());
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if (proc == nullptr)
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{
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threads_debug_printf
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("did not find thread nor process for general_thread %s",
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cs.general_thread.to_string ().c_str ());
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}
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else
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{
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threads_debug_printf
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("did not find thread for general_thread %s, but found process",
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cs.general_thread.to_string ().c_str ());
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}
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switch_to_process (proc);
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}
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else
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switch_to_thread (found);
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return (current_thread != NULL);
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}
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/* See target.h. */
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bool
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set_desired_process ()
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{
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client_state &cs = get_client_state ();
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process_info *proc = find_process_pid (cs.general_thread.pid ());
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if (proc == nullptr)
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{
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threads_debug_printf
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("did not find process for general_thread %s",
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cs.general_thread.to_string ().c_str ());
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}
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switch_to_process (proc);
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return proc != nullptr;
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}
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/* See target.h. */
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int
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read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
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{
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/* At the time of writing, GDB only sends write packets with LEN==0,
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not read packets (see comment in target_write_memory), but it
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doesn't hurt to prevent problems if it ever does, or we're
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connected to some client other than GDB that does. */
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if (len == 0)
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return 0;
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int res = the_target->read_memory (memaddr, myaddr, len);
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check_mem_read (memaddr, myaddr, len);
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return res;
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}
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/* See target/target.h. */
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int
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target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
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{
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return read_inferior_memory (memaddr, myaddr, len);
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}
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/* See target/target.h. */
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int
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target_read_uint32 (CORE_ADDR memaddr, uint32_t *result)
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{
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return read_inferior_memory (memaddr, (gdb_byte *) result, sizeof (*result));
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}
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/* See target/target.h. */
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int
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target_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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ssize_t len)
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{
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/* GDB may send X packets with LEN==0, for probing packet support.
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If we let such a request go through, then buffer.data() below may
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return NULL, which may confuse target implementations. Handle it
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here to avoid lower levels having to care about this case. */
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if (len == 0)
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return 0;
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/* Make a copy of the data because check_mem_write may need to
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update it. */
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gdb::byte_vector buffer (myaddr, myaddr + len);
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check_mem_write (memaddr, buffer.data (), myaddr, len);
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return the_target->write_memory (memaddr, buffer.data (), len);
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}
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ptid_t
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mywait (ptid_t ptid, struct target_waitstatus *ourstatus,
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target_wait_flags options, int connected_wait)
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{
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ptid_t ret;
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if (connected_wait)
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server_waiting = 1;
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ret = target_wait (ptid, ourstatus, options);
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/* We don't expose _LOADED events to gdbserver core. See the
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`dlls_changed' global. */
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if (ourstatus->kind () == TARGET_WAITKIND_LOADED)
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ourstatus->set_stopped (GDB_SIGNAL_0);
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/* If GDB is connected through TCP/serial, then GDBserver will most
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probably be running on its own terminal/console, so it's nice to
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print there why is GDBserver exiting. If however, GDB is
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connected through stdio, then there's no need to spam the GDB
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console with this -- the user will already see the exit through
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regular GDB output, in that same terminal. */
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if (!remote_connection_is_stdio ())
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{
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if (ourstatus->kind () == TARGET_WAITKIND_EXITED)
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fprintf (stderr,
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"\nChild exited with status %d\n", ourstatus->exit_status ());
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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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gdb_signal_to_host (ourstatus->sig ()),
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gdb_signal_to_name (ourstatus->sig ()));
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}
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if (connected_wait)
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server_waiting = 0;
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return ret;
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}
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/* See target/target.h. */
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void
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target_stop_and_wait (ptid_t ptid)
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{
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struct target_waitstatus status;
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bool was_non_stop = non_stop;
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struct thread_resume resume_info;
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resume_info.thread = ptid;
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resume_info.kind = resume_stop;
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resume_info.sig = GDB_SIGNAL_0;
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the_target->resume (&resume_info, 1);
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non_stop = true;
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mywait (ptid, &status, 0, 0);
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non_stop = was_non_stop;
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}
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/* See target/target.h. */
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ptid_t
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target_wait (ptid_t ptid, struct target_waitstatus *status,
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target_wait_flags options)
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{
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return the_target->wait (ptid, status, options);
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}
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/* See target/target.h. */
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void
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target_mourn_inferior (ptid_t ptid)
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{
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the_target->mourn (find_process_pid (ptid.pid ()));
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}
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/* See target/target.h. */
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void
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target_continue_no_signal (ptid_t ptid)
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{
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struct thread_resume resume_info;
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resume_info.thread = ptid;
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resume_info.kind = resume_continue;
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resume_info.sig = GDB_SIGNAL_0;
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the_target->resume (&resume_info, 1);
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}
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/* See target/target.h. */
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void
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target_continue (ptid_t ptid, enum gdb_signal signal)
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{
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struct thread_resume resume_info;
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resume_info.thread = ptid;
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resume_info.kind = resume_continue;
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resume_info.sig = gdb_signal_to_host (signal);
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the_target->resume (&resume_info, 1);
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}
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/* See target/target.h. */
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int
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target_supports_multi_process (void)
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{
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return the_target->supports_multi_process ();
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}
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void
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set_target_ops (process_stratum_target *target)
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{
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the_target = target;
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}
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/* Convert pid to printable format. */
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std::string
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target_pid_to_str (ptid_t ptid)
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{
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if (ptid == minus_one_ptid)
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return string_printf("<all threads>");
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else if (ptid == null_ptid)
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return string_printf("<null thread>");
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else if (ptid.tid () != 0)
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return string_printf("Thread %d.0x%s",
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ptid.pid (),
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phex_nz (ptid.tid (), sizeof (ULONGEST)));
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else if (ptid.lwp () != 0)
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return string_printf("LWP %d.%ld",
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ptid.pid (), ptid.lwp ());
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else
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return string_printf("Process %d",
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ptid.pid ());
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}
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int
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kill_inferior (process_info *proc)
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{
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gdb_agent_about_to_close (proc->pid);
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return the_target->kill (proc);
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}
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/* Define it. */
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target_terminal_state target_terminal::m_terminal_state
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= target_terminal_state::is_ours;
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/* See target/target.h. */
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void
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target_terminal::init ()
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{
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/* Placeholder needed because of fork_inferior. Not necessary on
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GDBserver. */
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}
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/* See target/target.h. */
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void
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target_terminal::inferior ()
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{
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/* Placeholder needed because of fork_inferior. Not necessary on
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GDBserver. */
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}
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/* See target/target.h. */
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void
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target_terminal::ours ()
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{
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/* Placeholder needed because of fork_inferior. Not necessary on
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GDBserver. */
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}
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/* See target/target.h. */
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void
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target_terminal::ours_for_output (void)
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{
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/* Placeholder. */
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}
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/* See target/target.h. */
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void
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target_terminal::info (const char *arg, int from_tty)
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{
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/* Placeholder. */
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}
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/* Default implementations of target ops.
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See target.h for definitions. */
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void
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process_stratum_target::post_create_inferior ()
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{
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/* Nop. */
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}
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void
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process_stratum_target::look_up_symbols ()
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{
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/* Nop. */
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}
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bool
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process_stratum_target::supports_read_auxv ()
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{
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return false;
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}
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int
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process_stratum_target::read_auxv (int pid, CORE_ADDR offset,
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unsigned char *myaddr, unsigned int len)
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{
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gdb_assert_not_reached ("target op read_auxv not supported");
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}
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bool
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process_stratum_target::supports_z_point_type (char z_type)
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{
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return false;
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}
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int
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process_stratum_target::insert_point (enum raw_bkpt_type type,
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CORE_ADDR addr,
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int size, raw_breakpoint *bp)
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{
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return 1;
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}
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int
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process_stratum_target::remove_point (enum raw_bkpt_type type,
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CORE_ADDR addr,
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int size, raw_breakpoint *bp)
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{
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return 1;
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}
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bool
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process_stratum_target::stopped_by_sw_breakpoint ()
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{
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return false;
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}
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bool
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process_stratum_target::supports_stopped_by_sw_breakpoint ()
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{
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return false;
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}
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bool
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process_stratum_target::stopped_by_hw_breakpoint ()
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{
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return false;
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}
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bool
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process_stratum_target::supports_stopped_by_hw_breakpoint ()
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{
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return false;
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}
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bool
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process_stratum_target::supports_hardware_single_step ()
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{
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return false;
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}
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bool
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process_stratum_target::stopped_by_watchpoint ()
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{
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return false;
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}
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CORE_ADDR
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process_stratum_target::stopped_data_address ()
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{
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return 0;
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}
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bool
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process_stratum_target::supports_read_offsets ()
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{
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return false;
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}
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bool
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process_stratum_target::supports_memory_tagging ()
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{
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return false;
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}
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bool
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process_stratum_target::fetch_memtags (CORE_ADDR address, size_t len,
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gdb::byte_vector &tags, int type)
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{
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gdb_assert_not_reached ("target op fetch_memtags not supported");
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}
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bool
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process_stratum_target::store_memtags (CORE_ADDR address, size_t len,
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const gdb::byte_vector &tags, int type)
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{
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gdb_assert_not_reached ("target op store_memtags not supported");
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}
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int
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process_stratum_target::read_offsets (CORE_ADDR *text, CORE_ADDR *data)
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{
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gdb_assert_not_reached ("target op read_offsets not supported");
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}
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bool
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process_stratum_target::supports_get_tls_address ()
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{
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return false;
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}
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int
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process_stratum_target::get_tls_address (thread_info *thread,
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CORE_ADDR offset,
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CORE_ADDR load_module,
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CORE_ADDR *address)
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{
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gdb_assert_not_reached ("target op get_tls_address not supported");
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}
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bool
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process_stratum_target::supports_qxfer_osdata ()
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{
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return false;
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}
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int
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process_stratum_target::qxfer_osdata (const char *annex,
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unsigned char *readbuf,
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unsigned const char *writebuf,
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CORE_ADDR offset, int len)
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{
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gdb_assert_not_reached ("target op qxfer_osdata not supported");
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}
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bool
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process_stratum_target::supports_qxfer_siginfo ()
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{
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return false;
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}
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int
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process_stratum_target::qxfer_siginfo (const char *annex,
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unsigned char *readbuf,
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unsigned const char *writebuf,
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CORE_ADDR offset, int len)
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{
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gdb_assert_not_reached ("target op qxfer_siginfo not supported");
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}
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bool
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process_stratum_target::supports_non_stop ()
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{
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return false;
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}
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bool
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process_stratum_target::async (bool enable)
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{
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return false;
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}
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int
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process_stratum_target::start_non_stop (bool enable)
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{
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if (enable)
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return -1;
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else
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return 0;
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}
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bool
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process_stratum_target::supports_multi_process ()
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{
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return false;
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}
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bool
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process_stratum_target::supports_fork_events ()
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{
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return false;
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}
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bool
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process_stratum_target::supports_vfork_events ()
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{
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return false;
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}
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gdb_thread_options
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process_stratum_target::supported_thread_options ()
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{
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return 0;
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}
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bool
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process_stratum_target::supports_exec_events ()
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{
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return false;
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}
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void
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process_stratum_target::handle_new_gdb_connection ()
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{
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/* Nop. */
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}
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int
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process_stratum_target::handle_monitor_command (char *mon)
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{
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return 0;
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}
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int
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process_stratum_target::core_of_thread (ptid_t ptid)
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{
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return -1;
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}
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bool
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process_stratum_target::supports_read_loadmap ()
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{
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return false;
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}
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int
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process_stratum_target::read_loadmap (const char *annex,
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CORE_ADDR offset,
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unsigned char *myaddr,
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unsigned int len)
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{
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gdb_assert_not_reached ("target op read_loadmap not supported");
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}
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void
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process_stratum_target::process_qsupported
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(gdb::array_view<const char * const> features)
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{
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/* Nop. */
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}
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bool
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process_stratum_target::supports_tracepoints ()
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{
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return false;
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}
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CORE_ADDR
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process_stratum_target::read_pc (regcache *regcache)
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{
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gdb_assert_not_reached ("process_target::read_pc: Unable to find PC");
|
|
}
|
|
|
|
void
|
|
process_stratum_target::write_pc (regcache *regcache, CORE_ADDR pc)
|
|
{
|
|
gdb_assert_not_reached ("process_target::write_pc: Unable to update PC");
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_thread_stopped ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::thread_stopped (thread_info *thread)
|
|
{
|
|
gdb_assert_not_reached ("target op thread_stopped not supported");
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::any_resumed ()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_get_tib_address ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
process_stratum_target::get_tib_address (ptid_t ptid, CORE_ADDR *address)
|
|
{
|
|
gdb_assert_not_reached ("target op get_tib_address not supported");
|
|
}
|
|
|
|
void
|
|
process_stratum_target::pause_all (bool freeze)
|
|
{
|
|
/* Nop. */
|
|
}
|
|
|
|
void
|
|
process_stratum_target::unpause_all (bool unfreeze)
|
|
{
|
|
/* Nop. */
|
|
}
|
|
|
|
void
|
|
process_stratum_target::stabilize_threads ()
|
|
{
|
|
/* Nop. */
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_fast_tracepoints ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
process_stratum_target::install_fast_tracepoint_jump_pad
|
|
(CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
|
|
CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
|
|
CORE_ADDR *trampoline, ULONGEST *trampoline_size,
|
|
unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
|
|
CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
|
|
char *err)
|
|
{
|
|
gdb_assert_not_reached ("target op install_fast_tracepoint_jump_pad "
|
|
"not supported");
|
|
}
|
|
|
|
int
|
|
process_stratum_target::get_min_fast_tracepoint_insn_len ()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
struct emit_ops *
|
|
process_stratum_target::emit_ops ()
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_disable_randomization ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_qxfer_libraries_svr4 ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
process_stratum_target::qxfer_libraries_svr4 (const char *annex,
|
|
unsigned char *readbuf,
|
|
unsigned const char *writebuf,
|
|
CORE_ADDR offset, int len)
|
|
{
|
|
gdb_assert_not_reached ("target op qxfer_libraries_svr4 not supported");
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_agent ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_btrace ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
btrace_target_info *
|
|
process_stratum_target::enable_btrace (thread_info *tp,
|
|
const btrace_config *conf)
|
|
{
|
|
error (_("Target does not support branch tracing."));
|
|
}
|
|
|
|
int
|
|
process_stratum_target::disable_btrace (btrace_target_info *tinfo)
|
|
{
|
|
error (_("Target does not support branch tracing."));
|
|
}
|
|
|
|
int
|
|
process_stratum_target::read_btrace (btrace_target_info *tinfo,
|
|
std::string *buffer,
|
|
enum btrace_read_type type)
|
|
{
|
|
error (_("Target does not support branch tracing."));
|
|
}
|
|
|
|
int
|
|
process_stratum_target::read_btrace_conf (const btrace_target_info *tinfo,
|
|
std::string *buffer)
|
|
{
|
|
error (_("Target does not support branch tracing."));
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_range_stepping ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_pid_to_exec_file ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
const char *
|
|
process_stratum_target::pid_to_exec_file (int pid)
|
|
{
|
|
gdb_assert_not_reached ("target op pid_to_exec_file not supported");
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_multifs ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
process_stratum_target::multifs_open (int pid, const char *filename,
|
|
int flags, mode_t mode)
|
|
{
|
|
return open (filename, flags, mode);
|
|
}
|
|
|
|
int
|
|
process_stratum_target::multifs_unlink (int pid, const char *filename)
|
|
{
|
|
return unlink (filename);
|
|
}
|
|
|
|
ssize_t
|
|
process_stratum_target::multifs_readlink (int pid, const char *filename,
|
|
char *buf, size_t bufsiz)
|
|
{
|
|
return readlink (filename, buf, bufsiz);
|
|
}
|
|
|
|
int
|
|
process_stratum_target::breakpoint_kind_from_pc (CORE_ADDR *pcptr)
|
|
{
|
|
/* The default behavior is to use the size of a breakpoint as the
|
|
kind. */
|
|
int size = 0;
|
|
sw_breakpoint_from_kind (0, &size);
|
|
return size;
|
|
}
|
|
|
|
int
|
|
process_stratum_target::breakpoint_kind_from_current_state (CORE_ADDR *pcptr)
|
|
{
|
|
return breakpoint_kind_from_pc (pcptr);
|
|
}
|
|
|
|
const char *
|
|
process_stratum_target::thread_name (ptid_t thread)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::thread_handle (ptid_t ptid, gdb_byte **handle,
|
|
int *handle_len)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
thread_info *
|
|
process_stratum_target::thread_pending_parent (thread_info *thread)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
thread_info *
|
|
process_stratum_target::thread_pending_child (thread_info *thread,
|
|
target_waitkind *kind)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_software_single_step ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
process_stratum_target::supports_catch_syscall ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
process_stratum_target::get_ipa_tdesc_idx ()
|
|
{
|
|
return 0;
|
|
}
|