Updates for dynamic loading of DLLs, some cleanups.

src/WIN/win_dynld.c

@@ -0,0 +1,64 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ * 		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Try to load a support DLL.
+ *
+ * Version:	@(#)win_dynld.c	1.0.1	2017/05/21
+ *
+ * Author:	Fred N. van Kempen, <decwiz@yahoo.com>
+ *		Copyright 2017 Fred N. van Kempen
+ */
+#include <windows.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pcap.h>
+#include "plat_dynld.h"
+#include "../ibm.h"
+
+
+void *
+dynld_module(const char *name, dllimp_t *table)
+{
+    HANDLE h;
+    dllimp_t *imp;
+    void *func;
+    char **foo;
+
+    /* See if we can load the desired module. */
+    if ((h = LoadLibrary(name)) == NULL) {
+	pclog("DynLd(\"%s\"): library not found!\n", name);
+	return(NULL);
+    }
+
+    /* Now load the desired function pointers. */
+    for (imp=table; imp->name!=NULL; imp++) {
+	func = GetProcAddress(h, imp->name);
+	if (func == NULL) {
+		pclog("DynLd(\"%s\"): function '%s' not found!\n",
+						name, imp->name);
+		CloseHandle(h);
+		return(NULL);
+	}
+
+	/* To overcome typing issues.. */
+	*(char **)imp->func = (char *)func;
+    }
+
+    /* All good. */
+    return((void *)h);
+}
+
+
+void
+dynld_close(void *handle)
+{
+    if (handle != NULL)
+	CloseHandle((HANDLE *)handle);
+}