Add DLL binding helper

util/dll-bind.c

@@ -0,0 +1,47 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <stdint.h>
+
+#include "util/dll-bind.h"
+#include "util/dprintf.h"
+
+HRESULT dll_bind(
+    void *dest,
+    HINSTANCE src,
+    const struct dll_bind_sym **syms_pos,
+    size_t syms_count)
+{
+    HRESULT hr;
+    void *src_result;
+    void **dest_field;
+    const struct dll_bind_sym *current_sym;
+    size_t i;
+
+    assert(dest != NULL);
+    assert(src != NULL);
+    assert(syms_pos != NULL);
+
+    hr = S_OK;
+    current_sym = *syms_pos;
+
+    assert(current_sym != NULL);
+
+    for (i = 0; i < syms_count; i++) {
+        src_result = GetProcAddress(src, current_sym->sym);
+
+        if (src_result == NULL) {
+            hr = E_NOTIMPL;
+
+            break;
+        }
+
+        dest_field = (void **)(((uint8_t *)dest) + current_sym->off);
+        *dest_field = src_result;
+        current_sym++;
+    }
+
+    *syms_pos = current_sym;
+
+    return hr;
+}