| //===- PPCELFStreamer.h - ELF Object Output --------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This is a custom MCELFStreamer for PowerPC. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_PPC_MCELFSTREAMER_PPCELFSTREAMER_H |
| #define LLVM_LIB_TARGET_PPC_MCELFSTREAMER_PPCELFSTREAMER_H |
| |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/MC/MCELFStreamer.h" |
| #include <memory> |
| |
| namespace llvm { |
| |
| class MCAsmBackend; |
| class MCCodeEmitter; |
| class MCContext; |
| class MCSubtargetInfo; |
| |
| class PPCELFStreamer : public MCELFStreamer { |
| // We need to keep track of the last label we emitted (only one) because |
| // depending on whether the label is on the same line as an aligned |
| // instruction or not, the label may refer to the instruction or the nop. |
| MCSymbol *LastLabel; |
| SMLoc LastLabelLoc; |
| |
| public: |
| PPCELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> MAB, |
| std::unique_ptr<MCObjectWriter> OW, |
| std::unique_ptr<MCCodeEmitter> Emitter); |
| |
| void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override; |
| |
| // EmitLabel updates LastLabel and LastLabelLoc when a new label is emitted. |
| void emitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override; |
| private: |
| void emitPrefixedInstruction(const MCInst &Inst, const MCSubtargetInfo &STI); |
| void emitGOTToPCRelReloc(const MCInst &Inst); |
| void emitGOTToPCRelLabel(const MCInst &Inst); |
| }; |
| |
| // Check if the instruction Inst is part of a pair of instructions that make up |
| // a link time GOT PC Rel optimization. |
| Optional<bool> isPartOfGOTToPCRelPair(const MCInst &Inst, |
| const MCSubtargetInfo &STI); |
| |
| MCELFStreamer *createPPCELFStreamer(MCContext &Context, |
| std::unique_ptr<MCAsmBackend> MAB, |
| std::unique_ptr<MCObjectWriter> OW, |
| std::unique_ptr<MCCodeEmitter> Emitter); |
| } // end namespace llvm |
| |
| #endif // LLVM_LIB_TARGET_PPC_MCELFSTREAMER_PPCELFSTREAMER_H |