2008-06-21 Michael Snyder <msnyder@specifix.com>

	Add monitor gdbreplay-next command.
	* gdbfreeplay-back.c (freeplay_show_next_commands): New function.
	Echo the next set of gdb commands, in the manner of gdbreplay.
	(handle_special_case): Handle monitor gdbreplay-next command.
	(fallbacks): Catch any unhandled qRcmd requests.

2 files changed, 52 insertions, 2 deletions

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 7464dee..d148880 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,11 @@
 2008-06-21  Michael Snyder  <msnyder@specifix.com>
 
+	Add monitor gdbreplay-next command.
+	* gdbfreeplay-back.c (freeplay_show_next_commands): New function.
+	Echo the next set of gdb commands, in the manner of gdbreplay.
+	(handle_special_case): Handle monitor gdbreplay-next command.
+	(fallbacks): Catch any unhandled qRcmd requests.
+
 	Add support for 'R' packet (restart).
 	* gdbfreeplay-back.c (handle_special_case).  Add support for 'R'.
 	Remove support for "monitor gdbfreeplay-echo".
diff --git a/gdb/gdbserver/gdbfreeplay-back.c b/gdb/gdbserver/gdbfreeplay-back.c
index e44e2a4..b060f82 100644
--- a/gdb/gdbserver/gdbfreeplay-back.c
+++ b/gdb/gdbserver/gdbfreeplay-back.c
@@ -638,6 +638,33 @@ add_checksum (char *inbuf)
 }
 
 /*
+ * freeplay_show_next_commands
+ *
+ * Output the gdb commands contained in the current frame.
+ */
+
+static void
+freeplay_show_next_commands (FILE *infile)
+{
+  char *line;
+
+  if (cur_frame >= 0 && cur_frame < last_cached_frame)
+    {
+      fseek (infile, stopframe[cur_frame].eventpos, SEEK_SET);
+      while ((line = fgets (inbuf, sizeof (inbuf), infile)) != NULL)
+	{
+	  if (cur_frame + 1 < last_cached_frame &&
+	      ftell (infile) >= stopframe[cur_frame + 1].eventpos)
+	    /* Done with current frame.  */
+	    break;
+
+	  if (line[0] == 'c' && line[1] == ' ')
+	    fputs (line, stdout);
+	}
+    }
+}
+
+/*
  * handle_special_case
  *
  * Handle these requests locally, rather than through the replay buffer.
@@ -660,8 +687,8 @@ handle_special_case (FILE *infile, int fd, char *request)
 
   static char *monitor_verbose_off = "$qRcmd,766572626f7365206f6666#13";
   static char *monitor_verbose_on  = "$qRcmd,766572626f7365206f6e#d6";
-  static char *monitor_echo = "$qRcmd,67646266726565706c61792d6563686f";
-
+  static char *monitor_gdbreplay_next = 
+    "$qRcmd,6764627265706c61792d6e657874#83";
 
   /* Handle 'k' (kill) request by exiting.  */
   if (strstr (request, "$k#6b") != NULL)
@@ -700,6 +727,15 @@ handle_special_case (FILE *infile, int fd, char *request)
       return OK;
     }
 
+  /* Handle "monitor gdbreplay-next".  */
+  if (strstr (request, monitor_gdbreplay_next) != NULL)
+    {
+      /* Show the next gdb commands from the gdbreplay log,
+	 just like gdbreplay would.  */
+      freeplay_show_next_commands (infile);
+      return OK;
+    }
+
   /* Handle 'R' (restart) request.
      This is an extended-remote request that is not really used any more,
      but we can send it out-of-band (using "maint packet") to effectively
@@ -972,6 +1008,14 @@ fallbacks (FILE *infile, int fd, char *request)
 	}
     }
 
+  /* Any unhandled qRcmd, just echo it to stdout.  */
+  if ((p = strstr (request, "$qRcmd,")) != NULL)
+    {
+      if (verbose)
+	fprintf (stdout, "fallbacks: ignoring %s\n", p);
+      return EMPTY;
+    }
+
   /* Default for any other un-handled request -- return empty string.  */
   if (verbose)
     fprintf (stdout, "fallbacks: absorbing unknown request '%s'.\n",