[MC] Implement RV64GC object emission

1 files changed, 45 insertions, 0 deletions

diff --git a/backend/include/rcc/MC/ELFObjectWriter.h b/backend/include/rcc/MC/ELFObjectWriter.h
new file mode 100644
index 0000000..2cd8879
--- /dev/null
+++ b/backend/include/rcc/MC/ELFObjectWriter.h
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_MC_ELFOBJECTWRITER_H
+#define RCC_MC_ELFOBJECTWRITER_H
+
+#include "rcc/MC/MCObjectWriter.h"
+
+#include <cstdint>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace rcc::mc {
+
+struct ELFExtraSection final {
+  std::string Name;
+  std::uint32_t Type = 1;
+  std::uint64_t Flags = 0;
+  std::uint64_t Alignment = 1;
+  std::uint64_t EntrySize = 0;
+  std::vector<std::uint8_t> Contents;
+};
+
+struct ELFObjectTargetInfo final {
+  std::uint16_t Machine = 0;
+  std::uint8_t OSABI = 0;
+  std::uint8_t ABIVersion = 0;
+  std::uint32_t Flags = 0;
+  std::vector<ELFExtraSection> ExtraSections;
+};
+
+class ELF64LEObjectWriter final : public MCObjectWriter {
+public:
+  explicit ELF64LEObjectWriter(ELFObjectTargetInfo Target) : Target(std::move(Target)) {}
+
+  [[nodiscard]] Expected<std::vector<std::uint8_t>>
+  writeObject(const MCAssembledObject &Object) const override;
+
+private:
+  ELFObjectTargetInfo Target;
+};
+
+} // namespace rcc::mc
+
+#endif // RCC_MC_ELFOBJECTWRITER_H