* Makefile.in: Add new file ser-tcp.c.

	* defs.h (memcmp):  Add decl for memcmp to #ifndef MEM_FNS_DECLARED.
	* findvar.c (write_register):  See if we are writing back the same
	value that's already in the register.  If so, don't bother.
	* remote.c (putpkt, getpkt):  Improve handling of communication
	problems.
	* ser-go32.c:  Prototype it to death.  Update serial_ops and add
	dummy routines where appropriate.
	* ser-tcp.c:  New module to implement serial I/O via TCP
	connections.
	* ser-unix.c:  Clean up getting/setting of tty state.  Get rid of
	SERIAL_RESTORE, add SERIAL_{GET|SET}_TTY_STATE interfaces.
	* serial.c:  Add start of support for connect command.
	(serial_open):  Distinguish between tcp and local devices.
	* serial.h (struct serial_ops):  Get rid of restore, add
	get_tty_state and set_tty_state.  Define protoypes and macros for
	this mess.
	* gdbserver/remote-utils.c:  Add tcp support.  (readchar):  Do
	some real buffering.  Handle error conditions gracefully.
	* gdbserver/remote-inflow-sparc.c:  Update to remote-inflow.c
	(Lynx), remove lots of cruft.

1 files changed, 53 insertions, 7 deletions

diff --git a/gdb/ser-go32.c b/gdb/ser-go32.c
index 1d930a8..c9770a9 100644
--- a/gdb/ser-go32.c
+++ b/gdb/ser-go32.c
@@ -21,6 +21,33 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include "serial.h"
 #include <sys/dos.h>
 
+/* This is unused for now.  We just return a placeholder. */
+struct go32_ttystate
+{
+  int bogus;
+};
+
+static int go32_open PARAMS ((serial_t scb, const char *name));
+static void go32_raw PARAMS ((serial_t scb));
+static int wait_for PARAMS ((serial_t scb, int timeout));
+static int go32_readchar PARAMS ((serial_t scb, int timeout));
+static int rate_to_code PARAMS ((int rate));
+static int go32_setbaudrate PARAMS ((serial_t scb, int rate));
+static int go32_write PARAMS ((serial_t scb, const char *str, int len));
+static void go32_restore PARAMS ((serial_t scb));
+static void go32_close PARAMS ((serial_t scb));
+serial_ttystate go32_get_tty_state PARAMS ((serial_t scb));
+static int go32_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
+static int strncasecmp PARAMS ((char *str1, char *str2, int len));
+static char *aptr PARAMS ((short p));
+static ASYNC_STRUCT *getivec PARAMS ((int which));
+static int dos_async_init PARAMS ((int port));
+static void dos_async_tx PARAMS ((const char c));
+static int dos_async_ready PARAMS (());
+static int dos_async_rx PARAMS (());
+static int dosasync_read PARAMS ((int fd, char *buf, int len, int timeout));
+static int dosasync_write PARAMS ((int fd, const char *buf, int len, int timeout));
+
 #define SIGNATURE 0x4154
 #define VERSION 1
 #define OFFSET 0x104
@@ -260,6 +287,30 @@ go32_readchar (scb, timeout)
     return SERIAL_TIMEOUT;
 }
 
+/* go32_{get set}_tty_state() are both dummys to fill out the function
+   vector.  Someday, they may do something real... */
+
+static serial_ttystate
+go32_get_tty_state(scb)
+     serial_t scb;
+{
+  struct go32_ttystate *state;
+
+  state = (struct go32_ttystate *)xmalloc(sizeof *state);
+
+  return (serial_ttystate)state;
+}
+
+static int
+go32_set_tty_state(scb, ttystate)
+     serial_t scb;
+     serial_ttystate ttystate;
+{
+  struct go32_ttystate *state;
+
+  return 0;
+}
+
 static int
 go32_setbaudrate (scb, rate)
      serial_t scb;
@@ -284,12 +335,6 @@ go32_close ()
 {
 }
 
-static void
-go32_restore (scb)
-     serial_t scb;
-{
-}
-
 static struct serial_ops go32_ops =
 {
   "hardwire",
@@ -299,7 +344,8 @@ static struct serial_ops go32_ops =
   go32_readchar,
   go32_write,
   go32_raw,
-  go32_restore,
+  go32_get_tty_state,
+  go32_set_tty_state,
   go32_setbaudrate
 };