5f1bb62c6b
This also adds support for auth stubs on MachO using __DATA,__auth_ptr. Some of the machinery for auth stubs is already implemented; this generalizes that a bit to support MachO, and moves some of the shared logic into MMIImpls. In particular, this originally had an AuthStubInfo struct, but we no longer need it beyond a single MCExpr. So this provides variants of the symbol stub helper type declarations and functions for "expr stubs", where a stub points at an arbitrary MCExpr, rather than a simple MCSymbol (and a bit).
76 lines
3.2 KiB
C++
76 lines
3.2 KiB
C++
//===-- AArch64TargetObjectFile.h - AArch64 Object Info -*- C++ ---------*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64TARGETOBJECTFILE_H
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#define LLVM_LIB_TARGET_AARCH64_AARCH64TARGETOBJECTFILE_H
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#include "Utils/AArch64BaseInfo.h"
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#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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namespace llvm {
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/// This implementation is used for AArch64 ELF targets (Linux in particular).
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class AArch64_ELFTargetObjectFile : public TargetLoweringObjectFileELF {
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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public:
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AArch64_ELFTargetObjectFile() {
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PLTRelativeVariantKind = MCSymbolRefExpr::VK_PLT;
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SupportIndirectSymViaGOTPCRel = true;
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}
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const MCExpr *getIndirectSymViaGOTPCRel(const GlobalValue *GV,
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const MCSymbol *Sym,
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const MCValue &MV, int64_t Offset,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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MCSymbol *getAuthPtrSlotSymbol(const TargetMachine &TM,
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MachineModuleInfo *MMI, const MCSymbol *RawSym,
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AArch64PACKey::ID Key,
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uint16_t Discriminator) const;
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};
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/// AArch64_MachoTargetObjectFile - This TLOF implementation is used for Darwin.
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class AArch64_MachoTargetObjectFile : public TargetLoweringObjectFileMachO {
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public:
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AArch64_MachoTargetObjectFile();
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const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
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unsigned Encoding,
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const TargetMachine &TM,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const override;
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const MCExpr *getIndirectSymViaGOTPCRel(const GlobalValue *GV,
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const MCSymbol *Sym,
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const MCValue &MV, int64_t Offset,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
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const TargetMachine &TM) const override;
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MCSymbol *getAuthPtrSlotSymbol(const TargetMachine &TM,
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MachineModuleInfo *MMI, const MCSymbol *RawSym,
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AArch64PACKey::ID Key,
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uint16_t Discriminator) const;
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};
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/// This implementation is used for AArch64 COFF targets.
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class AArch64_COFFTargetObjectFile : public TargetLoweringObjectFileCOFF {};
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} // end namespace llvm
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#endif
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