added via accelerant, a copy of skeleton driver yet.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13609 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/accelerants/via/engine/support.c

@@ -0,0 +1,34 @@
+/* Some commmon support functions */
+/* Mark Watson 2/2000;
+ * Rudolf Cornelissen 1/2004 */
+
+#define MODULE_BIT 0x00000800
+
+#include <stdarg.h>
+#include "std.h"
+
+/*delays in multiple of microseconds*/
+void delay(bigtime_t i)
+{
+	bigtime_t start=system_time();
+	while(system_time()-start<i);
+}
+
+/*debug logging*/
+void eng_log(char *fmt, ...)
+{
+	char     buffer[1024];
+	char     fname[64];
+	FILE    *myhand;
+	va_list  args;
+
+	sprintf (fname, "/boot/home/" DRIVER_PREFIX ".accelerant.%d.log", accelerantIsClone);
+	myhand=fopen(fname,"a+");
+
+	if (myhand == NULL) return;
+
+	va_start(args,fmt);
+	vsprintf (buffer, fmt, args);
+	fprintf(myhand, "%s", buffer);
+	fclose(myhand);
+}