[FEAT] Updated DDK headers for C++ units. (BREAKING CHANGES)

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/src/libDDK/DriverKit/ObjectKit/Checksum.hpp b/src/libDDK/DriverKit/ObjectKit/Checksum.hpp
new file mode 100644
index 00000000..d1973161
--- /dev/null
+++ b/src/libDDK/DriverKit/ObjectKit/Checksum.hpp
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2024-2026, Amlal El Mahrouss (amlal@nekernel.org)
+// Licensed under the Apache License, Version 2.0 (see LICENSE file)
+// Official repository: https://github.com/ne-foss-org/nekernel
+
+#ifndef DRIVERKIT_CHECKSUM_H
+#define DRIVERKIT_CHECKSUM_H
+
+#include <DriverKit/ObjectKit/Base.hpp>
+
+namespace Kernel::DDK {
+
+using Blob = char*;
+using IndexableBlob = Blob;
+using Indexable     = char;
+
+/// @note This uses the FNV 64-bit variant.
+/// @brief Performs a checksum computation for a memory region.
+inline uintptr_t rtl_checksum(const IndexableBlob path) {
+  if (!path || *path == 0) return 0;
+
+  const uintptr_t kFNVSeed  = 0xcbf29ce484222325ULL;
+  const uintptr_t kFNVPrime = 0x100000001b3ULL;
+
+  uintptr_t hash = kFNVSeed;
+  IndexableBlob path_ = path;
+
+  while (*path_) {
+    hash ^= (Indexable) (*path_);
+    ++path_;
+
+    hash *= kFNVPrime;
+  }
+
+  return hash;
+}
+
+}  // namespace Kernel::DDK
+
+#endif