2008-10-10  Michael Snyder  <msnyder@vmware.com>

	* remote.c (remote_wait): Recognize "replaylog" reply as part 
	of 'T' stop event (NO_HISTORY).
	Declare "end of replay history" error reply as deprecated.

2008-10-10  Michael Snyder  <msnyder@vmware.com>

	* gdb.texinfo: Document the 'bc' and 'bs' (reverse) commands,
	and the 'replaylog' annotation of the 'T' stop event message.

Index: remote.c
===================================================================
RCS file: /cvs/src/src/gdb/remote.c,v
retrieving revision 1.310.2.4
diff -u -p -r1.310.2.4 remote.c
--- remote.c	8 Oct 2008 00:26:28 -0000	1.310.2.4
+++ remote.c	10 Oct 2008 20:37:48 -0000
@@ -3616,6 +3616,7 @@ remote_wait (ptid_t ptid, struct target_
   ptid_t event_ptid = null_ptid;
   ULONGEST addr;
   int solibs_changed = 0;
+  int replay_event = 0;
 
   status->kind = TARGET_WAITKIND_EXITED;
   status->value.integer = 0;
@@ -3661,6 +3662,7 @@ remote_wait (ptid_t ptid, struct target_
 	  warning (_("Remote failure reply: %s"), buf);
 	  if (buf[1] == '0' && buf[2] == '6')
 	    {
+	      warning (_("Use of 'E6' to indicate NO_HISTORY is deprecated, and will go away in a future GDB release."));
 	      status->kind = TARGET_WAITKIND_NO_HISTORY;
 	    }
 	  else
@@ -3734,6 +3736,16 @@ Packet: '%s'\n"),
 			solibs_changed = 1;
 			p = p_temp;
 		      }
+		    else if (strncmp (p, "replaylog", p1 - 1) == 0)
+		      {
+			/* NO_HISTORY event.
+			   p1 will indicate "begin" or "end", but
+			   it makes no difference for now, so ignore it.  */
+			replay_event = 1;
+			p_temp = strchr (p1 + 1, ';');
+			if (p_temp)
+			  p = p_temp;
+		      }
 		    else
  		      {
  			/* Silently skip unknown optional info.  */
@@ -3779,6 +3791,8 @@ Packet: '%s'\n"),
 	case 'S':		/* Old style status, just signal only.  */
 	  if (solibs_changed)
 	    status->kind = TARGET_WAITKIND_LOADED;
+	  else if (replay_event)
+	    status->kind = TARGET_WAITKIND_NO_HISTORY;
 	  else
 	    {
 	      status->kind = TARGET_WAITKIND_STOPPED;
Index: doc/gdb.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v
retrieving revision 1.525.2.3
diff -u -p -r1.525.2.3 gdb.texinfo
--- doc/gdb.texinfo	4 Oct 2008 19:11:51 -0000	1.525.2.3
+++ doc/gdb.texinfo	10 Oct 2008 20:37:49 -0000
@@ -24611,6 +24611,20 @@ breakpoint at @var{addr}.
 Don't use this packet.  Use the @samp{Z} and @samp{z} packets instead
 (@pxref{insert breakpoint or watchpoint packet}).
 
+@item bc
+@cindex @samp{bc} packet
+Backward continue.  Execute the target system in reverse.  No parameter.
+
+Reply:
+@xref{Stop Reply Packets}, for the reply specifications.
+
+@item bs
+@cindex @samp{bs} packet
+Backward single step.  Execute one instruction in reverse.  No parameter.
+
+Reply:
+@xref{Stop Reply Packets}, for the reply specifications.
+
 @item c @r{[}@var{addr}@r{]}
 @cindex @samp{c} packet
 Continue.  @var{addr} is address to resume.  If @var{addr} is omitted,
@@ -25228,6 +25242,14 @@ hex.
 The packet indicates that the loaded libraries have changed.
 @value{GDBN} should use @samp{qXfer:libraries:read} to fetch a new
 list of loaded libraries.  @var{r} is ignored.
+
+@cindex replay log events, remote reply
+@item replaylog
+The packet indicates that the target cannot continue replaying 
+logged execution events, because it has reached the end (or the
+beginning when executing backward) of the log.  The value of @var{r}
+will be either @samp{begin} or @samp{end}.
+
 @end table
 
 @item W @var{AA}