mirror of
https://sourceware.org/git/binutils-gdb.git
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919adfe840
This patch moves gdbserver to the top level. This patch is as close to a pure move as possible -- gdbserver still builds its own variant of gnulib and gdbsupport. Changing this will be done in a separate patch. [v2] Note that, per Simon's review comment, this patch changes the tree so that gdbserver is not built for or1k or score. This makes sense, because there is apparently not actually a gdbserver port here. [v3] This version of the patch also splits out some configury into a new file, gdbserver/configure.host, so that the top-level configure script can simply rely on it in order to decide whether gdbserver should be built. [v4] This version adds documentation and removes some unnecessary top-level dependencies. [v5] Update docs to mention "make all-gdbserver" and change how top-level configure decides whether to build gdbserver, switching to a single, shared script. Tested by the buildbot. ChangeLog 2020-02-07 Tom Tromey <tom@tromey.com> Pedro Alves <palves@redhat.com> * src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver. * gdbserver: New directory, moved from gdb/gdbserver. * configure.ac (host_tools): Add gdbserver. Only build gdbserver on certain systems. * Makefile.in, configure: Rebuild. * Makefile.def (host_modules, dependencies): Add gdbserver. * MAINTAINERS: Add gdbserver. gdb/ChangeLog 2020-02-07 Tom Tromey <tom@tromey.com> * README: Update gdbserver documentation. * gdbserver: Move to top level. * configure.tgt (build_gdbserver): Remove. * configure.ac: Remove --enable-gdbserver. * configure: Rebuild. * Makefile.in (distclean): Don't mention gdbserver. Change-Id: I826b7565b54604711dc7a11edea0499cd51ff39e
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/* Fork a Unix child process, and set up to debug it, for GDBserver.
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Copyright (C) 1989-2020 Free Software Foundation, Inc.
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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 "server.h"
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#include "gdbsupport/job-control.h"
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#include "nat/fork-inferior.h"
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef SIGTTOU
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/* A file descriptor for the controlling terminal. */
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static int terminal_fd;
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/* TERMINAL_FD's original foreground group. */
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static pid_t old_foreground_pgrp;
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/* Hand back terminal ownership to the original foreground group. */
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static void
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restore_old_foreground_pgrp (void)
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{
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tcsetpgrp (terminal_fd, old_foreground_pgrp);
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}
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#endif
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/* See nat/fork-inferior.h. */
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void
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prefork_hook (const char *args)
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{
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client_state &cs = get_client_state ();
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if (debug_threads)
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{
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debug_printf ("args: %s\n", args);
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debug_flush ();
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}
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#ifdef SIGTTOU
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signal (SIGTTOU, SIG_DFL);
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signal (SIGTTIN, SIG_DFL);
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#endif
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/* Clear this so the backend doesn't get confused, thinking
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CONT_THREAD died, and it needs to resume all threads. */
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cs.cont_thread = null_ptid;
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}
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/* See nat/fork-inferior.h. */
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void
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postfork_hook (pid_t pid)
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{
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}
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/* See nat/fork-inferior.h. */
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void
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postfork_child_hook ()
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{
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/* This is set to the result of setpgrp, which if vforked, will be
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visible to you in the parent process. It's only used by humans
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for debugging. */
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static int debug_setpgrp = 657473;
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debug_setpgrp = gdb_setpgid ();
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if (debug_setpgrp == -1)
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perror (_("setpgrp failed in child"));
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}
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/* See nat/fork-inferior.h. */
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void
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gdb_flush_out_err ()
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{
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fflush (stdout);
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fflush (stderr);
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}
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/* See server.h. */
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void
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post_fork_inferior (int pid, const char *program)
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{
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client_state &cs = get_client_state ();
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#ifdef SIGTTOU
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signal (SIGTTOU, SIG_IGN);
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signal (SIGTTIN, SIG_IGN);
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terminal_fd = fileno (stderr);
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old_foreground_pgrp = tcgetpgrp (terminal_fd);
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tcsetpgrp (terminal_fd, pid);
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atexit (restore_old_foreground_pgrp);
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#endif
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startup_inferior (the_target, pid,
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START_INFERIOR_TRAPS_EXPECTED,
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&cs.last_status, &cs.last_ptid);
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current_thread->last_resume_kind = resume_stop;
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current_thread->last_status = cs.last_status;
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signal_pid = pid;
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target_post_create_inferior ();
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fprintf (stderr, "Process %s created; pid = %d\n", program, pid);
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fflush (stderr);
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}
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