--- src/vc.c.orig	Tue Feb 20 23:38:10 2001
+++ src/vc.c	Tue Feb 20 23:41:25 2001
@@ -37,7 +37,13 @@
 #include	<termio.h>
 #elif defined(__FreeBSD__)
 #include      <termios.h>
-#include      <machine/console.h>
+#include        <osreldate.h>
+#if __FreeBSD_version >= 410000
+#  include      <sys/consio.h>
+#  include      <sys/kbio.h>
+#else
+#  include      <machine/console.h>
+#endif
 #endif
 #include	<sys/ioctl.h>
 #if defined(linux)
@@ -94,28 +100,26 @@
 inline	void	blatch(void *head, int n)
 {
 
-    __asm__("\t clc\n"
+    __asm__ volatile("\t clc\n"
 	    "1:\n"
 	    "\t andb %%bl, (%%eax)\n"
 	    "\t incl %%eax\n"
 	    "\t loop 1b\n"
-	    :
-	    : "eax" ((long)head), "bl" (0x7F), "c" (n)
-	    : "bl", "cx" );
+	    : "=bl" (head), "=c" (n)
+	    : "eax" ((long)head), "0" (0x7F), "1" (n));
 }
 
 static
 inline	void	llatch(void *head, int n)
 {
 
-    __asm__("\t clc\n"
+    __asm__ volatile("\t clc\n"
 	    "1:\n"
 	    "\t andl %%ebx, (%%eax)\n"
 	    "\t addl $4, %%eax\n"
 	    "\t loop 1b\n"
-	    :
-	    : "eax" ((long)head), "ebx" (0x7F7F7F7F), "c" (n>>2)
-	    : "ebx", "cx" );
+	    : "=ebx" (head), "=c" (n)
+	    : "eax" ((long)head), "0" (0x7F7F7F7F), "1" (n>>2));
 }
 
 static inline u_int	TextAddress(u_int x, u_int y)