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/lib/AsmPrinter/TargetMCInstLowering.cpp | 49 +++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 backend/lib/AsmPrinter/TargetMCInstLowering.cpp

(limited to 'backend/lib/AsmPrinter/TargetMCInstLowering.cpp')

diff --git a/backend/lib/AsmPrinter/TargetMCInstLowering.cpp b/backend/lib/AsmPrinter/TargetMCInstLowering.cpp
new file mode 100644
index 0000000..c171034
--- /dev/null
+++ b/backend/lib/AsmPrinter/TargetMCInstLowering.cpp
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rcc/CodeGen/TargetMCInstLowering.h"
+
+namespace rcc {
+
+Expected<void> TargetMCInstLowering::emitTerminalInstruction(const MachineInstr &,
+                                                             MachineMCContext &,
+                                                             mc::MCStreamer &) const {
+  return makeUnexpected(ErrorCode::Unsupported,
+                        "target does not support this terminal emission instruction");
+}
+
+Expected<void> TargetMCInstLowering::emitFileHeader(MachineMCContext &, mc::MCStreamer &) const {
+  return {};
+}
+
+Expected<void> TargetMCInstLowering::emitFileTrailer(MachineMCContext &, mc::MCStreamer &) const {
+  return {};
+}
+
+Expected<void> TargetMCInstLowering::emitGenericConstant(const GenericConstantData &, std::uint64_t,
+                                                         MachineMCContext &,
+                                                         mc::MCStreamer &) const {
+  return makeUnexpected(ErrorCode::Unsupported,
+                        "target does not support assembly emission for generic constants");
+}
+
+Expected<void> TargetMCInstLowering::emitGlobalInitializer(const GlobalInitializer &,
+                                                           MachineMCContext &,
+                                                           mc::MCStreamer &) const {
+  return makeUnexpected(ErrorCode::Unsupported,
+                        "target does not support assembly emission for global initializers");
+}
+
+Expected<void> TargetMCInstLowering::emitTargetConstant(const TargetConstant &, MachineMCContext &,
+                                                        mc::MCStreamer &) const {
+  return makeUnexpected(ErrorCode::Unsupported,
+                        "target does not support assembly emission for this target constant");
+}
+
+Expected<void> TargetMCInstLowering::emitTargetJumpTable(const MachineFunction &,
+                                                         const MachineJumpTableEntry &,
+                                                         MachineMCContext &,
+                                                         mc::MCStreamer &) const {
+  return makeUnexpected(ErrorCode::Unsupported, "target does not support this jump-table encoding");
+}
+
+} // namespace rcc
-- 
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