* configure.ac: On MinGW, define USE_WIN32API and link with

	-lws2_32.
	* ser-tcp.c (<winsock2.h>): Include, for Windows.
	(ETIMEDOUT): Define, for Windows.
	(ioctl): Likewise.
	(closesocket): Define, for POSIX.
	(net_open): Adjust for differences in socket functions between
	Windows and UNIX.
	(net_close): Likweise.
	(net_read_prim): New function.
	(net_write_prim): Likewise.
	(_initialize_ser_tcp): Initialize winsock.  Fill in read_prim and
	write_prim.
	* ser-unix.h (ser_unix_readcchar): Remove.
	(ser_unix_read_prim): Declare.
	(ser_unix_write_prim): Likewise.
	* ser-unix.c (generic_readchar): Move to ser-base.c.
	(ser_unix_wait_for): Likewise.
	(do_unix_readchar): Likewise.
	(ser_unix_readchar): Likewise.
	(_initialize_ser_hardwire): Initialize read_prim and write_prim.
	(ser_unix_read_prim): New function.
	(ser_unix_write_prim): Likewise.
	* ser-base.h (generic_readchar): Declare.
	(ser_base_readchar): Likewise.
	* ser-base.c (<winsock2.h>): Include, for windows.
	(fd_event): Use the read primitive specified by the serial
	interface.
	(ser_base_wait_for): Moved from ser-unix.c
	(do_ser_base_read_char): Likewise.
	(generic_readchar): Likewise.
	(ser_base_readchar): Likewise.
	(ser_base_write): Use the write primitive specified by the serial
	interface.
	* ser-pipe.c (_initialize_ser_pipe): Use ser_base_readchar, not
	ser_unix_readchar.  Initialize read_prim and write_prim.
	* serial.c (struct serial_ops): Add read_prim and write_prim.
	* configure: Regenerate.

1 files changed, 57 insertions, 8 deletions

diff --git a/gdb/ser-tcp.c b/gdb/ser-tcp.c
index f908d25..abe6ed4 100644
--- a/gdb/ser-tcp.c
+++ b/gdb/ser-tcp.c
@@ -34,11 +34,19 @@
 #endif
 
 #include <sys/time.h>
+
+#ifdef USE_WIN32API
+#include <winsock2.h>
+#define ETIMEDOUT WSAETIMEDOUT
+#define close closesocket
+#define ioctl ioctlsocket
+#else
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <sys/socket.h>
 #include <netinet/tcp.h>
+#endif
 
 #include <signal.h>
 #include "gdb_string.h"
@@ -62,6 +70,11 @@ net_open (struct serial *scb, const char *name)
   int use_udp;
   struct hostent *hostent;
   struct sockaddr_in sockaddr;
+#ifdef USE_WIN32API
+  u_long ioarg;
+#else
+  int ioarg;
+#endif
 
   use_udp = 0;
   if (strncmp (name, "udp:", 4) == 0)
@@ -108,14 +121,25 @@ net_open (struct serial *scb, const char *name)
 	  sizeof (struct in_addr));
 
   /* set socket nonblocking */
-  tmp = 1;
-  ioctl (scb->fd, FIONBIO, &tmp);
+  ioarg = 1;
+  ioctl (scb->fd, FIONBIO, &ioarg);
 
   /* Use Non-blocking connect.  connect() will return 0 if connected already. */
   n = connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr));
 
-  if (n < 0 && errno != EINPROGRESS)
+  if (n < 0
+#ifdef USE_WIN32API
+      /* Under Windows, calling "connect" with a non-blocking socket
+	 results in WSAEWOULDBLOCK, not WSAEINPROGRESS.  */
+      && WSAGetLastError() != WSAEWOULDBLOCK
+#else
+      && errno != EINPROGRESS
+#endif
+      )
     {
+#ifdef USE_WIN32API
+      errno = WSAGetLastError();
+#endif
       net_close (scb);
       return -1;
     }
@@ -165,7 +189,11 @@ net_open (struct serial *scb, const char *name)
   {
     int res, err, len;
     len = sizeof(err);
-    res = getsockopt (scb->fd, SOL_SOCKET, SO_ERROR, &err, &len);
+    /* On Windows, the fourth parameter to getsockopt is a "char *";
+       on UNIX systems it is generally "void *".  The cast to "void *"
+       is OK everywhere, since in C "void *" can be implicitly
+       converted to any pointer type.  */
+    res = getsockopt (scb->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len);
     if (res < 0 || err)
       {
 	if (err)
@@ -176,8 +204,8 @@ net_open (struct serial *scb, const char *name)
   } 
 
   /* turn off nonblocking */
-  tmp = 0;
-  ioctl (scb->fd, FIONBIO, &tmp);
+  ioarg = 0;
+  ioctl (scb->fd, FIONBIO, &ioarg);
 
   if (use_udp == 0)
     {
@@ -206,16 +234,35 @@ net_close (struct serial *scb)
   scb->fd = -1;
 }
 
+static int
+net_read_prim (struct serial *scb, size_t count)
+{
+  return recv (scb->fd, scb->buf, count, 0);
+}
+
+static int
+net_write_prim (struct serial *scb, const void *buf, size_t count)
+{
+  return send (scb->fd, buf, count, 0);
+}
+
 void
 _initialize_ser_tcp (void)
 {
-  struct serial_ops *ops = XMALLOC (struct serial_ops);
+  struct serial_ops *ops;
+#ifdef USE_WIN32API
+  WSADATA wsa_data;
+  if (WSAStartup (MAKEWORD (1, 0), &wsa_data) != 0)
+    /* WinSock is unavailable.  */
+    return;
+#endif
+  ops = XMALLOC (struct serial_ops);
   memset (ops, 0, sizeof (struct serial_ops));
   ops->name = "tcp";
   ops->next = 0;
   ops->open = net_open;
   ops->close = net_close;
-  ops->readchar = ser_unix_readchar;
+  ops->readchar = ser_base_readchar;
   ops->write = ser_base_write;
   ops->flush_output = ser_base_flush_output;
   ops->flush_input = ser_base_flush_input;
@@ -229,5 +276,7 @@ _initialize_ser_tcp (void)
   ops->setstopbits = ser_base_setstopbits;
   ops->drain_output = ser_base_drain_output;
   ops->async = ser_base_async;
+  ops->read_prim = net_read_prim;
+  ops->write_prim = net_write_prim;
   serial_add_interface (ops);
 }