From adcf8c9b1bd1b47e00bf859693112cea1f7e8c9f Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Mon, 10 Aug 2026 20:36:50 +0800
Subject: [Tooling] Complete backend tooling and validation

---
 backend/include/rcc/Support/Error.h  |  6 ++++++
 backend/include/rcc/Support/SHA256.h | 24 ++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 backend/include/rcc/Support/SHA256.h

(limited to 'backend/include/rcc/Support')

diff --git a/backend/include/rcc/Support/Error.h b/backend/include/rcc/Support/Error.h
index 63c0b2f..0429cc0 100644
--- a/backend/include/rcc/Support/Error.h
+++ b/backend/include/rcc/Support/Error.h
@@ -30,6 +30,12 @@ enum class ErrorCode : std::uint8_t {
   FixupApplicationFailed,
   RelocationFailed,
   ObjectWritingFailed,
+  InvalidInvocation,
+  ManifestError,
+  CacheMiss,
+  ReproducerError,
+  ReductionFailed,
+  FuzzingFailure,
 };
 
 [[nodiscard]] std::string_view getErrorCodeName(ErrorCode Code) noexcept;
diff --git a/backend/include/rcc/Support/SHA256.h b/backend/include/rcc/Support/SHA256.h
new file mode 100644
index 0000000..ff7b50b
--- /dev/null
+++ b/backend/include/rcc/Support/SHA256.h
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_SUPPORT_SHA256_H
+#define RCC_SUPPORT_SHA256_H
+
+#include <array>
+#include <cstddef>
+#include <cstdint>
+#include <span>
+#include <string>
+#include <string_view>
+
+namespace rcc {
+
+using SHA256Digest = std::array<std::uint8_t, 32>;
+
+[[nodiscard]] SHA256Digest sha256(std::span<const std::byte> Input);
+[[nodiscard]] SHA256Digest sha256(std::string_view Input);
+[[nodiscard]] std::string sha256Hex(std::span<const std::byte> Input);
+[[nodiscard]] std::string sha256Hex(std::string_view Input);
+
+} // namespace rcc
+
+#endif // RCC_SUPPORT_SHA256_H
-- 
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