From 379ff50dcc7ccf977379aee68fa9d10f69065d23 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Sun, 9 Aug 2026 18:31:49 +0800
Subject: [MC] Implement RV64GC assembly emission

---
 backend/include/rcc/MC/MCCFI.h | 54 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 backend/include/rcc/MC/MCCFI.h

(limited to 'backend/include/rcc/MC/MCCFI.h')

diff --git a/backend/include/rcc/MC/MCCFI.h b/backend/include/rcc/MC/MCCFI.h
new file mode 100644
index 0000000..e6ac396
--- /dev/null
+++ b/backend/include/rcc/MC/MCCFI.h
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_MC_MCCFI_H
+#define RCC_MC_MCCFI_H
+
+#include "rcc/MC/MCSymbol.h"
+#include "rcc/Support/Error.h"
+
+#include <cstdint>
+#include <vector>
+
+namespace rcc::mc {
+
+enum class MCCFIOperation : std::uint8_t {
+  StartProc,
+  EndProc,
+  Sections,
+  Personality,
+  LSDA,
+  SignalFrame,
+  ReturnColumn,
+  SameValue,
+  RememberState,
+  RestoreState,
+  Offset,
+  DefCFARegister,
+  DefCFAOffset,
+  DefCFA,
+  RelativeOffset,
+  AdjustCFAOffset,
+  Escape,
+  Restore,
+  Undefined,
+  Register,
+  WindowSave,
+  NegateReturnAddressState,
+  NegateReturnAddressStateWithPC,
+  GNUArgsSize,
+  Label,
+  ValueOffset,
+};
+
+struct MCCFIInstruction final {
+  MCCFIOperation Operation = MCCFIOperation::StartProc;
+  std::vector<std::int64_t> Operands;
+  std::vector<std::uint8_t> Bytes;
+  MCSymbolRef Symbol;
+
+  [[nodiscard]] Expected<void> verify() const;
+};
+
+} // namespace rcc::mc
+
+#endif // RCC_MC_MCCFI_H
-- 
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