mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-05 08:14:19 +08:00
268a13a5a3
This is the next patch in the ongoing series to move gdbsever to the top level. This patch just renames the "common" directory. The idea is to do this move in two parts: first rename the directory (this patch), then move the directory to the top. This approach makes the patches a bit more tractable. I chose the name "gdbsupport" for the directory. However, as this patch was largely written by sed, we could pick a new name without too much difficulty. Tested by the buildbot. gdb/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * contrib/ari/gdb_ari.sh: Change common to gdbsupport. * configure: Rebuild. * configure.ac: Change common to gdbsupport. * gdbsupport: Rename from common. * acinclude.m4: Change common to gdbsupport. * Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES) (HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to gdbsupport. * aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c, amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c, amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c, amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c, amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c, arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c, arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c, arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c, arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c, auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h, btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c, charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c, cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c, coff-pe-read.c, command.h, compile/compile-c-support.c, compile/compile-c.h, compile/compile-cplus-symbols.c, compile/compile-cplus-types.c, compile/compile-cplus.h, compile/compile-loc2c.c, compile/compile.c, completer.c, completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c, cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c, darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c, disasm.h, dtrace-probe.c, dwarf-index-cache.c, dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c, dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c, event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c, features/aarch64-core.c, features/aarch64-fpu.c, features/aarch64-pauth.c, features/aarch64-sve.c, features/i386/32bit-avx.c, features/i386/32bit-avx512.c, features/i386/32bit-core.c, features/i386/32bit-linux.c, features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c, features/i386/32bit-segments.c, features/i386/32bit-sse.c, features/i386/64bit-avx.c, features/i386/64bit-avx512.c, features/i386/64bit-core.c, features/i386/64bit-linux.c, features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c, features/i386/64bit-segments.c, features/i386/64bit-sse.c, features/i386/x32-core.c, features/riscv/32bit-cpu.c, features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c, features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c, features/riscv/64bit-fpu.c, features/tic6x-c6xp.c, features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h, findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h, gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c, gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c, go32-nat.c, guile/guile.c, guile/scm-ports.c, guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c, i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c, i386-linux-tdep.c, i386-tdep.c, i387-tdep.c, ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c, inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h, inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h, inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c, linux-tdep.c, linux-thread-db.c, location.c, machoread.c, macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h, mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h, minsyms.c, mips-linux-tdep.c, namespace.h, nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h, nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c, nat/amd64-linux-siginfo.c, nat/fork-inferior.c, nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c, nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c, nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h, nat/linux-waitpid.c, nat/mips-linux-watch.c, nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c, nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c, nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h, obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c, parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c, procfs.c, producer.c, progspace.h, psymtab.h, python/py-framefilter.c, python/py-inferior.c, python/py-ref.h, python/py-type.c, python/python.c, record-btrace.c, record-full.c, record.c, record.h, regcache-dump.c, regcache.c, regcache.h, remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c, riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c, selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c, ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c, source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c, stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h, symtab.c, symtab.h, target-descriptions.c, target-descriptions.h, target-memory.c, target.c, target.h, target/waitstatus.c, target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c, top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c, tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h, unittests/array-view-selftests.c, unittests/child-path-selftests.c, unittests/cli-utils-selftests.c, unittests/common-utils-selftests.c, unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c, unittests/format_pieces-selftests.c, unittests/function-view-selftests.c, unittests/lookup_name_info-selftests.c, unittests/memory-map-selftests.c, unittests/memrange-selftests.c, unittests/mkdir-recursive-selftests.c, unittests/observable-selftests.c, unittests/offset-type-selftests.c, unittests/optional-selftests.c, unittests/parse-connection-spec-selftests.c, unittests/ptid-selftests.c, unittests/rsp-low-selftests.c, unittests/scoped_fd-selftests.c, unittests/scoped_mmap-selftests.c, unittests/scoped_restore-selftests.c, unittests/string_view-selftests.c, unittests/style-selftests.c, unittests/tracepoint-selftests.c, unittests/unpack-selftests.c, unittests/utils-selftests.c, unittests/xml-utils-selftests.c, utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c, value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c, xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c, xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport. gdb/gdbserver/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * configure: Rebuild. * configure.ac: Change common to gdbsupport. * acinclude.m4: Change common to gdbsupport. * Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS) (version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change common to gdbsupport. * ax.c, event-loop.c, fork-child.c, gdb_proc_service.h, gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c, inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c, linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c, linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c, linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h, nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c, server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h, thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change common to gdbsupport.
180 lines
4.7 KiB
C
180 lines
4.7 KiB
C
/* Fork a Unix child process, and set up to debug it, for GDB.
|
|
|
|
Copyright (C) 1990-2019 Free Software Foundation, Inc.
|
|
|
|
Contributed by Cygnus Support.
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "defs.h"
|
|
#include "inferior.h"
|
|
#include "gdbcmd.h"
|
|
#include "terminal.h"
|
|
#include "gdbthread.h"
|
|
#include "top.h"
|
|
#include "gdbsupport/job-control.h"
|
|
#include "gdbsupport/filestuff.h"
|
|
#include "nat/fork-inferior.h"
|
|
#include "gdbsupport/common-inferior.h"
|
|
|
|
/* The exec-wrapper, if any, that will be used when starting the
|
|
inferior. */
|
|
|
|
static char *exec_wrapper = NULL;
|
|
|
|
/* See gdbsupport/common-inferior.h. */
|
|
|
|
const char *
|
|
get_exec_wrapper ()
|
|
{
|
|
return exec_wrapper;
|
|
}
|
|
|
|
/* See nat/fork-inferior.h. */
|
|
|
|
void
|
|
gdb_flush_out_err ()
|
|
{
|
|
gdb_flush (main_ui->m_gdb_stdout);
|
|
gdb_flush (main_ui->m_gdb_stderr);
|
|
}
|
|
|
|
/* The ui structure that will be saved on 'prefork_hook' and
|
|
restored on 'postfork_hook'. */
|
|
static struct ui *saved_ui = NULL;
|
|
|
|
/* See nat/fork-inferior.h. */
|
|
|
|
void
|
|
prefork_hook (const char *args)
|
|
{
|
|
const char *inferior_io_terminal = get_inferior_io_terminal ();
|
|
|
|
gdb_assert (saved_ui == NULL);
|
|
/* Retain a copy of our UI, since the child will replace this value
|
|
and if we're vforked, we have to restore it. */
|
|
saved_ui = current_ui;
|
|
|
|
/* Tell the terminal handling subsystem what tty we plan to run on;
|
|
it will just record the information for later. */
|
|
new_tty_prefork (inferior_io_terminal);
|
|
}
|
|
|
|
/* See nat/fork-inferior.h. */
|
|
|
|
void
|
|
postfork_hook (pid_t pid)
|
|
{
|
|
inferior *inf = current_inferior ();
|
|
|
|
inferior_appeared (inf, pid);
|
|
|
|
/* Needed for wait_for_inferior stuff. */
|
|
inferior_ptid = ptid_t (pid);
|
|
|
|
gdb_assert (saved_ui != NULL);
|
|
current_ui = saved_ui;
|
|
saved_ui = NULL;
|
|
|
|
new_tty_postfork ();
|
|
}
|
|
|
|
/* See nat/fork-inferior.h. */
|
|
|
|
void
|
|
postfork_child_hook ()
|
|
{
|
|
/* This is set to the result of setpgrp, which if vforked, will be
|
|
visible to you in the parent process. It's only used by humans
|
|
for debugging. */
|
|
static int debug_setpgrp = 657473;
|
|
|
|
/* Make sure we switch to main_ui here in order to be able to
|
|
use the fprintf_unfiltered/warning/error functions. */
|
|
current_ui = main_ui;
|
|
|
|
/* Create a new session for the inferior process, if necessary.
|
|
It will also place the inferior in a separate process group. */
|
|
if (create_tty_session () <= 0)
|
|
{
|
|
/* No session was created, but we still want to run the inferior
|
|
in a separate process group. */
|
|
debug_setpgrp = gdb_setpgid ();
|
|
if (debug_setpgrp == -1)
|
|
perror (_("setpgrp failed in child"));
|
|
}
|
|
|
|
/* Ask the tty subsystem to switch to the one we specified
|
|
earlier (or to share the current terminal, if none was
|
|
specified). */
|
|
new_tty ();
|
|
}
|
|
|
|
/* See inferior.h. */
|
|
|
|
ptid_t
|
|
gdb_startup_inferior (pid_t pid, int num_traps)
|
|
{
|
|
ptid_t ptid = startup_inferior (pid, num_traps, NULL, NULL);
|
|
|
|
/* Mark all threads non-executing. */
|
|
set_executing (ptid, 0);
|
|
|
|
return ptid;
|
|
}
|
|
|
|
/* Implement the "unset exec-wrapper" command. */
|
|
|
|
static void
|
|
unset_exec_wrapper_command (const char *args, int from_tty)
|
|
{
|
|
xfree (exec_wrapper);
|
|
exec_wrapper = NULL;
|
|
}
|
|
|
|
static void
|
|
show_startup_with_shell (struct ui_file *file, int from_tty,
|
|
struct cmd_list_element *c, const char *value)
|
|
{
|
|
fprintf_filtered (file,
|
|
_("Use of shell to start subprocesses is %s.\n"),
|
|
value);
|
|
}
|
|
|
|
void
|
|
_initialize_fork_child (void)
|
|
{
|
|
add_setshow_filename_cmd ("exec-wrapper", class_run, &exec_wrapper, _("\
|
|
Set a wrapper for running programs.\n\
|
|
The wrapper prepares the system and environment for the new program."),
|
|
_("\
|
|
Show the wrapper for running programs."), NULL,
|
|
NULL, NULL,
|
|
&setlist, &showlist);
|
|
|
|
add_cmd ("exec-wrapper", class_run, unset_exec_wrapper_command,
|
|
_("Disable use of an execution wrapper."),
|
|
&unsetlist);
|
|
|
|
add_setshow_boolean_cmd ("startup-with-shell", class_support,
|
|
&startup_with_shell, _("\
|
|
Set use of shell to start subprocesses. The default is on."), _("\
|
|
Show use of shell to start subprocesses."), NULL,
|
|
NULL,
|
|
show_startup_with_shell,
|
|
&setlist, &showlist);
|
|
}
|