Initial project import

tools/v/vlib/dl/dl_windows.c.v

@@ -0,0 +1,45 @@
+module dl
+
+pub const rtld_now = 0
+pub const rtld_lazy = 0
+pub const rtld_global = 0
+pub const rtld_local = 0
+pub const rtld_nodelete = 0
+pub const rtld_noload = 0
+
+fn C.LoadLibrary(libfilename &u16) voidptr
+
+fn C.GetProcAddress(handle voidptr, procname &u8) voidptr
+
+fn C.FreeLibrary(handle voidptr) bool
+
+type FN_vinit_caller = fn ()
+
+type FN_vcleanup_caller = fn ()
+
+// open loads a given module into the address space of the calling process.
+pub fn open(filename string, flags int) voidptr {
+	res := C.LoadLibrary(filename.to_wide())
+	return res
+}
+
+// close frees the loaded a given module.
+pub fn close(handle voidptr) bool {
+	return C.FreeLibrary(handle)
+}
+
+// sym returns an address of an exported function or variable from a given module.
+pub fn sym(handle voidptr, symbol string) voidptr {
+	return C.GetProcAddress(handle, voidptr(symbol.str))
+}
+
+// dlerror provides a text error diagnostic message for functions in `dl`.
+// It returns a human-readable string, describing the most recent error
+// that occurred from a call to one of the `dl` functions, since the last
+// call to dlerror().
+pub fn dlerror() string {
+	// https://docs.microsoft.com/en-us/windows/win32/api/errhandlingapi/nf-errhandlingapi-getlasterror
+	// Unlike dlerror(), GetLastError returns just an error code, that is function specific.
+	cerr := int(C.GetLastError())
+	return 'error code ${cerr}'
+}