* configure: Regenerate with proper autoconf 2.13.

[deliverable/binutils-gdb.git] / gdb / fork-child.c

diff --git a/gdb/fork-child.c b/gdb/fork-child.c
index 21e508939b6fb65076b514e3e80e030f43c0a97d..0b14a94618611a5cbf12fca858831491a5a5a815 100644 (file)
--- a/gdb/fork-child.c
+++ b/gdb/fork-child.c
@@ -183,6 +183,7 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
          switch (*p)
            {
            case '\'':
+           case '!':
            case '"':
            case '(':
            case ')':
@@ -214,6 +215,8 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
            {
              if (*p == '\'')
                strcat (shell_command, "'\\''");
+             else if (*p == '!')
+               strcat (shell_command, "\\!");
              else
                strncat (shell_command, p, 1);
            }
@@ -376,131 +379,6 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
 #endif
 }
 
-/* An inferior Unix process CHILD_PID has been created by a call to
-   fork() (or variants like vfork).  It is presently stopped, and waiting
-   to be resumed.  clone_and_follow_inferior will fork the debugger,
-   and that clone will "follow" (attach to) CHILD_PID.  The original copy
-   of the debugger will not touch CHILD_PID again.
-
-   Also, the original debugger will set FOLLOWED_CHILD FALSE, while the
-   clone will set it TRUE.
- */
-void
-clone_and_follow_inferior (int child_pid, int *followed_child)
-{
-  int debugger_pid;
-  int status;
-  char pid_spelling[100];      /* Arbitrary but sufficient length. */
-
-  /* This semaphore is used to coordinate the two debuggers' handoff
-     of CHILD_PID.  The original debugger will detach from CHILD_PID,
-     and then the clone debugger will attach to it.  (It must be done
-     this way because on some targets, only one process at a time can
-     trace another.  Thus, the original debugger must relinquish its
-     tracing rights before the clone can pick them up.)
-   */
-#define SEM_TALK (1)
-#define SEM_LISTEN (0)
-  int handoff_semaphore[2];    /* Original "talks" to [1], clone "listens" to [0] */
-  int talk_value = 99;
-  int listen_value;
-
-  /* Set debug_fork then attach to the child while it sleeps, to debug. */
-  static int debug_fork = 0;
-
-  /* It is generally good practice to flush any possible pending stdio
-     output prior to doing a fork, to avoid the possibility of both the
-     parent and child flushing the same data after the fork. */
-
-  gdb_flush (gdb_stdout);
-  gdb_flush (gdb_stderr);
-
-  /* Open the semaphore pipes.
-   */
-  status = pipe (handoff_semaphore);
-  if (status < 0)
-    error ("error getting pipe for handoff semaphore");
-
-  /* Clone the debugger.  Note that the apparent call to vfork()
-     below *might* actually be a call to fork() due to the fact that
-     autoconf will ``#define vfork fork'' on certain platforms.  */
-  if (debug_fork)
-    debugger_pid = fork ();
-  else
-    debugger_pid = vfork ();
-
-  if (debugger_pid < 0)
-    perror_with_name ("fork");
-
-  /* Are we the original debugger?  If so, we must relinquish all claims
-     to CHILD_PID. */
-  if (debugger_pid != 0)
-    {
-      char signal_spelling[100];       /* Arbitrary but sufficient length */
-
-      /* Detach from CHILD_PID.  Deliver a "stop" signal when we do, though,
-         so that it remains stopped until the clone debugger can attach
-         to it.
-       */
-      detach_breakpoints (child_pid);
-
-      sprintf (signal_spelling, "%d", target_signal_to_host (TARGET_SIGNAL_STOP));
-      target_require_detach (child_pid, signal_spelling, 1);
-
-      /* Notify the clone debugger that it should attach to CHILD_PID. */
-      write (handoff_semaphore[SEM_TALK], &talk_value, sizeof (talk_value));
-
-      *followed_child = 0;
-    }
-
-  /* We're the child. */
-  else
-    {
-      if (debug_fork)
-       sleep (debug_fork);
-
-      /* The child (i.e., the cloned debugger) must now attach to
-         CHILD_PID.  inferior_ptid is presently set to the parent process
-         of the fork, while CHILD_PID should be the child process of the
-         fork.
-
-         Wait until the original debugger relinquishes control of CHILD_PID,
-         though.
-       */
-      read (handoff_semaphore[SEM_LISTEN], &listen_value, sizeof (listen_value));
-
-      /* Note that we DON'T want to actually detach from inferior_ptid,
-         because that would allow it to run free.  The original
-         debugger wants to retain control of the process.  So, we
-         just reset inferior_ptid to CHILD_PID, and then ensure that all
-         breakpoints are really set in CHILD_PID.
-       */
-      target_mourn_inferior ();
-
-      /* Ask the tty subsystem to switch to the one we specified earlier
-         (or to share the current terminal, if none was specified).  */
-
-      new_tty ();
-
-      dont_repeat ();
-      sprintf (pid_spelling, "%d", child_pid);
-      target_require_attach (pid_spelling, 1);
-
-      /* Perform any necessary cleanup, after attachment.  (This form
-         of attaching can behave differently on some targets than the
-         standard method, where a process formerly not under debugger
-         control was suddenly attached to..)
-       */
-      target_post_follow_inferior_by_clone ();
-
-      *followed_child = 1;
-    }
-
-  /* Discard the handoff sempahore. */
-  (void) close (handoff_semaphore[SEM_LISTEN]);
-  (void) close (handoff_semaphore[SEM_TALK]);
-}
-
 /* Accept NTRAPS traps from the inferior.  */
 
 void