/* Fork a Unix child process, and set up to debug it, for GDB.
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
- 2001, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ 2001, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
Contributed by Cygnus Support.
#include "defs.h"
#include "gdb_string.h"
-#include "frame.h" /* required by inferior.h */
#include "inferior.h"
+#include "terminal.h"
#include "target.h"
#include "gdb_wait.h"
#include "gdb_vfork.h"
/* This function is NOT reentrant. Some of the variables have been
made static to ensure that they survive the vfork call. */
-void
+int
fork_inferior (char *exec_file_arg, char *allargs, char **env,
void (*traceme_fun) (void), void (*init_trace_fun) (int),
void (*pre_trace_fun) (void), char *shell_file_arg)
int shell = 0;
static char **argv;
const char *inferior_io_terminal = get_inferior_io_terminal ();
+ struct inferior *inf;
/* If no exec file handed to us, get it from the exec-file command
-- with a good, common error message if none is specified. */
/* Restore our environment in case a vforked child clob'd it. */
environ = save_our_env;
- init_thread_list ();
+ if (!have_inferiors ())
+ init_thread_list ();
+
+ inf = current_inferior ();
+
+ inferior_appeared (inf, pid);
/* Needed for wait_for_inferior stuff below. */
inferior_ptid = pid_to_ptid (pid);
+ new_tty_postfork ();
+
/* We have something that executes now. We'll be running through
the shell at this point, but the pid shouldn't change. Targets
supporting MT should fill this task's ptid with more data as soon
/* Now that we have a child process, make it our target, and
initialize anything target-vector-specific that needs
initializing. */
- (*init_trace_fun) (pid);
+ if (init_trace_fun)
+ (*init_trace_fun) (pid);
/* We are now in the child process of interest, having exec'd the
correct program, and are poised at the first instruction of the
new program. */
+ return pid;
}
/* Accept NTRAPS traps from the inferior. */
{
int pending_execs = ntraps;
int terminal_initted = 0;
+ ptid_t resume_ptid;
+
+ if (target_supports_multi_process ())
+ resume_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
+ else
+ resume_ptid = minus_one_ptid;
/* The process was started by the fork that created it, but it will
have stopped one instruction after execing the shell. Here we
while (1)
{
int resume_signal = TARGET_SIGNAL_0;
- ptid_t resume_ptid;
+ ptid_t event_ptid;
struct target_waitstatus ws;
memset (&ws, 0, sizeof (ws));
- resume_ptid = target_wait (pid_to_ptid (-1), &ws);
-
- /* Mark all threads non-executing. */
- set_executing (pid_to_ptid (-1), 0);
+ event_ptid = target_wait (resume_ptid, &ws, 0);
- /* In all-stop mode, resume all threads. */
- if (!non_stop)
- resume_ptid = pid_to_ptid (-1);
+ if (ws.kind == TARGET_WAITKIND_IGNORE)
+ /* The inferior didn't really stop, keep waiting. */
+ continue;
switch (ws.kind)
{
- case TARGET_WAITKIND_IGNORE:
case TARGET_WAITKIND_SPURIOUS:
case TARGET_WAITKIND_LOADED:
case TARGET_WAITKIND_FORKED:
case TARGET_WAITKIND_SYSCALL_ENTRY:
case TARGET_WAITKIND_SYSCALL_RETURN:
/* Ignore gracefully during startup of the inferior. */
+ switch_to_thread (event_ptid);
break;
case TARGET_WAITKIND_SIGNALLED:
/* Handle EXEC signals as if they were SIGTRAP signals. */
xfree (ws.value.execd_pathname);
resume_signal = TARGET_SIGNAL_TRAP;
+ switch_to_thread (event_ptid);
break;
case TARGET_WAITKIND_STOPPED:
resume_signal = ws.value.sig;
+ switch_to_thread (event_ptid);
break;
}
target_resume (resume_ptid, 0, TARGET_SIGNAL_0);
}
}
+
+ /* Mark all threads non-executing. */
+ set_executing (resume_ptid, 0);
}
/* Implement the "unset exec-wrapper" command. */
exec_wrapper = NULL;
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_fork_child;
+
void
_initialize_fork_child (void)
{