* remote-mips.c (mips_initialize): Clear mips_initializing via

	cleanup chain, not directly.

	* ser-unix.c (wait_for) [HAVE_TERMIO, HAVE_TERMIOS]: Make a timeout
	of -1 mean forever, like in the HAVE_SGTTY case.  Warn if we are
	munging the timeout due to the limited range of c_cc[VTIME].

3 files changed, 55 insertions, 4 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index da5fe2e..b9de4b1 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
 Sat Jan 22 08:30:42 1994  Jim Kingdon  (kingdon@deneb.cygnus.com)
 
+	* remote-mips.c (mips_initialize): Clear mips_initializing via
+	cleanup chain, not directly.
+
+	* ser-unix.c (wait_for) [HAVE_TERMIO, HAVE_TERMIOS]: Make a timeout
+	of -1 mean forever, like in the HAVE_SGTTY case.  Warn if we are
+	munging the timeout due to the limited range of c_cc[VTIME].
+
 	* fork-child.c, inferior.h (fork_inferior): New argument shell_file.
 	* procfs.c (procfs_create_inferior), inftarg.c (child_create_inferior),
 	m3-nat.c (m3_create_inferior): Pass it.
diff --git a/gdb/remote-mips.c b/gdb/remote-mips.c
index 02310b3..23e89f4 100644
--- a/gdb/remote-mips.c
+++ b/gdb/remote-mips.c
@@ -888,6 +888,13 @@ mips_request (cmd, addr, data, perr, timeout)
   return rresponse;
 }
 
+static void
+mips_initialize_cleanups (arg)
+     PTR arg;
+{
+  mips_initializing = 0;
+}
+
 /* Initialize a new connection to the MIPS board, and make sure we are
    really connected.  */
 
@@ -897,9 +904,16 @@ mips_initialize ()
   char cr;
   char buff[DATA_MAXLEN + 1];
   int err;
+  struct cleanup *old_cleanups = make_cleanup (mips_initialize_cleanups, NULL);
 
+  /* What is this code doing here?  I don't see any way it can happen, and
+     it might mean mips_initializing didn't get cleared properly.
+     So I'll make it a warning.  */
   if (mips_initializing)
-    return;
+    {
+      warning ("internal error: mips_initialize called twice");
+      return;
+    }
 
   mips_initializing = 1;
 
@@ -929,7 +943,7 @@ mips_initialize ()
     }
   mips_receive_packet (buff, 1, 3);
 
-  mips_initializing = 0;
+  do_cleanups (old_cleanups);
 
   /* If this doesn't call error, we have connected; we don't care if
      the request itself succeeds or fails.  */
diff --git a/gdb/ser-unix.c b/gdb/ser-unix.c
index d14a996..0e490fb 100644
--- a/gdb/ser-unix.c
+++ b/gdb/ser-unix.c
@@ -435,11 +435,41 @@ wait_for(scb, timeout)
       fprintf_unfiltered(gdb_stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
 
 #ifdef HAVE_TERMIOS
-    state.termios.c_cc[VTIME] = timeout * 10;
+    if (timeout < 0)
+      {
+	/* No timeout.  */
+	state.termios.c_cc[VTIME] = 0;
+	state.termios.c_cc[VMIN] = 1;
+      }
+    else
+      {
+	state.termios.c_cc[VMIN] = 0;
+	state.termios.c_cc[VTIME] = timeout * 10;
+	if (state.termios.c_cc[VTIME] != timeout * 10)
+	  {
+	    warning ("Timeout value %d too large, using %d", timeout,
+		     state.termios.c_cc[VTIME] / 10);
+	  }
+      }
 #endif
 
 #ifdef HAVE_TERMIO
-    state.termio.c_cc[VTIME] = timeout * 10;
+    if (timeout < 0)
+      {
+	/* No timeout.  */
+	state.termio.c_cc[VTIME] = 0;
+	state.termio.c_cc[VMIN] = 1;
+      }
+    else
+      {
+	state.termio.c_cc[VMIN] = 0;
+	state.termio.c_cc[VTIME] = timeout * 10;
+	if (state.termio.c_cc[VTIME] != timeout * 10)
+	  {
+	    warning ("Timeout value %d too large, using %d", timeout,
+		     state.termio.c_cc[VTIME] / 10);
+	  }
+      }
 #endif
 
     scb->current_timeout = timeout;