2002-08-06  Daniel Jacobowitz  <drow@mvista.com>

	* gdbserver/linux-low.c (linux_detach_one_process)
	(linux_detach): New.
	(linux_target_ops): Add linux_detach.
	* gdbserver/server.c (main): Recognize `K' packet.
	* gdbserver/target.h (struct target_ops): Add ``detach''
	member.
	(detach_inferior): New.

Index: gdbserver/linux-low.c
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/linux-low.c,v
retrieving revision 1.18
diff -u -p -r1.18 linux-low.c
--- gdbserver/linux-low.c	18 Jul 2002 15:18:02 -0000	1.18
+++ gdbserver/linux-low.c	6 Aug 2002 20:50:03 -0000
@@ -232,13 +232,28 @@ linux_kill_one_process (struct inferior_
     } while (WIFSTOPPED (wstat));
 }
 
-/* Return nonzero if the given thread is still alive.  */
 static void
 linux_kill (void)
 {
   for_each_inferior (&all_threads, linux_kill_one_process);
 }
 
+static void
+linux_detach_one_process (struct inferior_list_entry *entry)
+{
+  struct thread_info *thread = (struct thread_info *) entry;
+  struct process_info *process = get_thread_process (thread);
+
+  ptrace (PTRACE_DETACH, pid_of (process), 0, 0);
+}
+
+static void
+linux_detach (void)
+{
+  for_each_inferior (&all_threads, linux_detach_one_process);
+}
+
+/* Return nonzero if the given thread is still alive.  */
 static int
 linux_thread_alive (int tid)
 {
@@ -1261,6 +1276,7 @@ static struct target_ops linux_target_op
   linux_create_inferior,
   linux_attach,
   linux_kill,
+  linux_detach,
   linux_thread_alive,
   linux_resume,
   linux_wait,
Index: gdbserver/server.c
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/server.c,v
retrieving revision 1.13
diff -u -p -r1.13 server.c
--- gdbserver/server.c	11 Jun 2002 17:32:40 -0000	1.13
+++ gdbserver/server.c	6 Aug 2002 20:50:03 -0000
@@ -310,6 +310,19 @@ main (int argc, char *argv[])
 		  exit (0);
 		  break;
 		}
+	    case 'K':
+	      if (attached)
+		{
+		  fprintf (stderr, "Detaching from inferior\n");
+		  detach_inferior ();
+		  write_ok (own_buf);
+		  putpkt (own_buf);
+		  remote_close ();
+		  exit (0);
+		}
+	      else
+		write_enn (own_buf);
+	      break;
 	    case 'T':
 	      if (mythread_alive (strtol (&own_buf[1], NULL, 16)))
 		write_ok (own_buf);
Index: gdbserver/target.h
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/target.h,v
retrieving revision 1.4
diff -u -p -r1.4 target.h
--- gdbserver/target.h	11 Jun 2002 17:32:40 -0000	1.4
+++ gdbserver/target.h	6 Aug 2002 20:50:03 -0000
@@ -48,6 +48,10 @@ struct target_ops
 
   void (*kill) (void);
 
+  /* Detach from all inferiors.  */
+
+  void (*detach) (void);
+
   /* Return 1 iff the thread with process ID PID is alive.  */
 
   int (*thread_alive) (int pid);
@@ -123,6 +127,9 @@ void set_target_ops (struct target_ops *
 
 #define kill_inferior() \
   (*the_target->kill) ()
+
+#define detach_inferior() \
+  (*the_target->detach) ()
 
 #define mythread_alive(pid) \
   (*the_target->thread_alive) (pid)