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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_MC_MCOBJECTSTREAMER_H
#define RCC_MC_MCOBJECTSTREAMER_H
#include "rcc/MC/MCAssembler.h"
#include "rcc/MC/MCObjectWriter.h"
#include "rcc/MC/MCStreamer.h"
#include <cstdint>
#include <span>
#include <string_view>
#include <vector>
namespace rcc::mc {
class ELFObjectStreamer final : public MCStreamer {
public:
ELFObjectStreamer(const MCCodeEmitter &Emitter, const MCAsmBackend &Backend,
const MCObjectWriter &Writer) noexcept
: Assembler(Emitter, Backend), Writer(&Writer) {}
[[nodiscard]] Expected<void> switchSection(MCSectionRef Section) override;
[[nodiscard]] Expected<void> emitLabel(MCSymbolRef Symbol) override;
[[nodiscard]] Expected<void> emitInstruction(const MCInst &Instruction) override;
[[nodiscard]] Expected<void> emitValue(MCExprRef Value, std::uint8_t Size) override;
[[nodiscard]] Expected<void> emitBytes(std::span<const std::uint8_t> Bytes) override;
[[nodiscard]] Expected<void> emitZeroFill(std::uint64_t Size) override;
[[nodiscard]] Expected<void> emitAlignment(std::uint64_t Alignment, std::uint8_t Fill = 0,
std::uint64_t MaximumBytes = 0) override;
[[nodiscard]] Expected<void> emitSymbolAttribute(MCSymbolRef Symbol,
MCSymbolAttribute Attribute) override;
[[nodiscard]] Expected<void> emitSymbolSize(MCSymbolRef Symbol, MCExprRef Size) override;
[[nodiscard]] Expected<void> emitCommonSymbol(MCSymbolRef Symbol, std::uint64_t Size,
std::uint64_t Alignment) override;
[[nodiscard]] Expected<void> emitDirective(std::string_view Name,
std::string_view Arguments = {}) override;
[[nodiscard]] Expected<void> emitCFI(const MCCFIInstruction &Instruction) override;
[[nodiscard]] Expected<void> emitInlineAssembly(std::string_view Text) override;
[[nodiscard]] Expected<void> emitComment(std::string_view Text) override;
[[nodiscard]] Expected<void> finish() override;
[[nodiscard]] Expected<void> configureDwarfFrame(MCSectionRef Section, MCDwarfFrameInfo Info);
[[nodiscard]] Expected<std::vector<std::uint8_t>> takeOutput();
private:
[[nodiscard]] Expected<void> ensureOpen() const;
MCAssembler Assembler;
const MCObjectWriter *Writer;
std::vector<std::uint8_t> Output;
bool IsFinished = false;
bool OutputWasTaken = false;
};
} // namespace rcc::mc
#endif // RCC_MC_MCOBJECTSTREAMER_H
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