more fixes

vulkan_includes.c

@@ -1,3 +1,5 @@
+#pragma attribute(push, nogc, nothrow)
+
 #ifdef __linux__
 #	include <xcb/xcb.h>
 #	include <X11/Xlib.h>

vulkan_util.d

@@ -23,6 +23,39 @@ const DEFAULT_ALIGNMENT = (void *).sizeof * 2;
 version(linux)
 {
 import core.sys.posix.sys.mman;
+import core.sys.posix.dlfcn;
+
+struct Library
+{
+	void* ptr;
+};
+
+struct Function
+{
+	void* ptr;
+};
+
+Library LoadLibrary(string name)
+{
+	Library lib = {
+		ptr: null,
+	};
+
+	lib.ptr = dlopen(name.ptr, RTLD_NOW);
+	
+	return lib;
+};
+
+Function LoadFunction(Library lib, string name)
+{
+	Function fn = {
+		ptr: null,
+	};
+
+	fn.ptr = dlsym(lib.ptr, name.ptr);
+
+	return fn;
+};
 
 void*
 MemAlloc(u64 size)