[Qemu-devel] gdb-stub support for Win32 host

[Jason Wessel <jason.wessel@windriver.com>]

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This patch adds support for the gdb-stub to work on the Win32 host and 
compile in by default.  I retested to make sure everything was 
compatible so as not to break the unix side.

signed-off-by: jason.wessel@windriver.com

Thanks,
Jason.

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Index: qemu/configure
===================================================================
--- qemu.orig/configure
+++ qemu/configure
@@ -312,7 +312,6 @@ fi
 if test "$mingw32" = "yes" ; then
     linux="no"
     EXESUF=".exe"
-    gdbstub="no"
     oss="no"
     if [ "$cpu" = "i386" ] ; then
         kqemu="yes"
Index: qemu/gdbstub.c
===================================================================
--- qemu.orig/gdbstub.c
+++ qemu/gdbstub.c
@@ -30,10 +30,22 @@
 #include "vl.h"
 #endif
 
+#ifndef _WIN32
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <signal.h>
+#else
+#include <windows.h>
+#include <io.h>
+typedef unsigned int socklen_t;
+#ifndef SIGTRAP
+#define SIGTRAP 5
+#endif
+#ifndef SIGINT
+#define SIGINT 2
+#endif
+#endif
 
 //#define DEBUG_GDB
 
@@ -69,7 +81,7 @@ static int get_char(GDBState *s)
     int ret;
 
     for(;;) {
-        ret = read(s->fd, &ch, 1);
+        ret = recv(s->fd, &ch, 1, 0);
         if (ret < 0) {
             if (errno != EINTR && errno != EAGAIN)
                 return -1;
@@ -87,7 +99,7 @@ static void put_buffer(GDBState *s, cons
     int ret;
 
     while (len > 0) {
-        ret = write(s->fd, buf, len);
+        ret = send(s->fd, buf, len, 0);
         if (ret < 0) {
             if (errno != EINTR && errno != EAGAIN)
                 return;
@@ -829,7 +841,7 @@ static void gdb_read(void *opaque)
     int i, size;
     uint8_t buf[4096];
 
-    size = read(s->fd, buf, sizeof(buf));
+    size = recv(s->fd, buf, sizeof(buf), 0);
     if (size < 0)
         return;
     if (size == 0) {
@@ -866,7 +878,7 @@ static void gdb_accept(void *opaque)
 
     /* set short latency */
     val = 1;
-    setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
+    setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
     
 #ifdef CONFIG_USER_ONLY
     s = &gdbserver_state;
@@ -881,7 +893,14 @@ static void gdb_accept(void *opaque)
     s->env = first_cpu; /* XXX: allow to change CPU */
     s->fd = fd;
 
+#ifndef _WIN32
     fcntl(fd, F_SETFL, O_NONBLOCK);
+#else
+    {
+        unsigned long tmp = 1;
+        ioctlsocket (fd, FIONBIO, &tmp);
+    }
+#endif
 
 #ifndef CONFIG_USER_ONLY
     /* stop the VM */
@@ -907,7 +926,7 @@ static int gdbserver_open(int port)
 
     /* allow fast reuse */
     val = 1;
-    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
+    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
 
     sockaddr.sin_family = AF_INET;
     sockaddr.sin_port = htons(port);
@@ -923,7 +942,14 @@ static int gdbserver_open(int port)
         return -1;
     }
 #ifndef CONFIG_USER_ONLY
+#ifndef _WIN32
     fcntl(fd, F_SETFL, O_NONBLOCK);
+#else
+    {
+        unsigned long tmp = 1;
+        ioctlsocket (fd, FIONBIO, &tmp);
+    }
+#endif
 #endif
     return fd;
 }