/usr/include/llvm-6.0/llvm/CodeGen/TargetLoweringObjectFileImpl.h is in llvm-6.0-dev 1:6.0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | //==- llvm/CodeGen/TargetLoweringObjectFileImpl.h - Object Info --*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements classes used to handle lowerings specific to common
// object file formats.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
#define LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
#include "llvm/CodeGen/TargetLoweringObjectFile.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCExpr.h"
namespace llvm {
class GlobalValue;
class MachineModuleInfo;
class Mangler;
class MCContext;
class MCSection;
class MCSymbol;
class TargetMachine;
class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
bool UseInitArray = false;
mutable unsigned NextUniqueID = 1; // ID 0 is reserved for execute-only sections
protected:
MCSymbolRefExpr::VariantKind PLTRelativeVariantKind =
MCSymbolRefExpr::VK_None;
public:
TargetLoweringObjectFileELF() = default;
~TargetLoweringObjectFileELF() override = default;
/// Emit Obj-C garbage collection and linker options.
void emitModuleMetadata(MCStreamer &Streamer, Module &M,
const TargetMachine &TM) const override;
void emitPersonalityValue(MCStreamer &Streamer, const DataLayout &TM,
const MCSymbol *Sym) const override;
/// Given a constant with the SectionKind, return a section that it should be
/// placed in.
MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
const Constant *C,
unsigned &Align) const override;
MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
MCSection *getSectionForJumpTable(const Function &F,
const TargetMachine &TM) const override;
bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference,
const Function &F) const override;
/// Return an MCExpr to use for a reference to the specified type info global
/// variable from exception handling information.
const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
unsigned Encoding,
const TargetMachine &TM,
MachineModuleInfo *MMI,
MCStreamer &Streamer) const override;
// The symbol that gets passed to .cfi_personality.
MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV,
const TargetMachine &TM,
MachineModuleInfo *MMI) const override;
void InitializeELF(bool UseInitArray_);
MCSection *getStaticCtorSection(unsigned Priority,
const MCSymbol *KeySym) const override;
MCSection *getStaticDtorSection(unsigned Priority,
const MCSymbol *KeySym) const override;
const MCExpr *lowerRelativeReference(const GlobalValue *LHS,
const GlobalValue *RHS,
const TargetMachine &TM) const override;
};
class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
public:
TargetLoweringObjectFileMachO();
~TargetLoweringObjectFileMachO() override = default;
void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
/// Emit the module flags that specify the garbage collection information.
void emitModuleMetadata(MCStreamer &Streamer, Module &M,
const TargetMachine &TM) const override;
MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
const Constant *C,
unsigned &Align) const override;
/// The mach-o version of this method defaults to returning a stub reference.
const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
unsigned Encoding,
const TargetMachine &TM,
MachineModuleInfo *MMI,
MCStreamer &Streamer) const override;
// The symbol that gets passed to .cfi_personality.
MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV,
const TargetMachine &TM,
MachineModuleInfo *MMI) const override;
/// Get MachO PC relative GOT entry relocation
const MCExpr *getIndirectSymViaGOTPCRel(const MCSymbol *Sym,
const MCValue &MV, int64_t Offset,
MachineModuleInfo *MMI,
MCStreamer &Streamer) const override;
void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
const TargetMachine &TM) const override;
};
class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
mutable unsigned NextUniqueID = 0;
public:
~TargetLoweringObjectFileCOFF() override = default;
void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
const TargetMachine &TM) const override;
MCSection *getSectionForJumpTable(const Function &F,
const TargetMachine &TM) const override;
/// Emit Obj-C garbage collection and linker options.
void emitModuleMetadata(MCStreamer &Streamer, Module &M,
const TargetMachine &TM) const override;
MCSection *getStaticCtorSection(unsigned Priority,
const MCSymbol *KeySym) const override;
MCSection *getStaticDtorSection(unsigned Priority,
const MCSymbol *KeySym) const override;
void emitLinkerFlagsForGlobal(raw_ostream &OS,
const GlobalValue *GV) const override;
};
class TargetLoweringObjectFileWasm : public TargetLoweringObjectFile {
mutable unsigned NextUniqueID = 0;
public:
TargetLoweringObjectFileWasm() = default;
~TargetLoweringObjectFileWasm() override = default;
MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
const TargetMachine &TM) const override;
bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference,
const Function &F) const override;
void InitializeWasm();
MCSection *getStaticCtorSection(unsigned Priority,
const MCSymbol *KeySym) const override;
MCSection *getStaticDtorSection(unsigned Priority,
const MCSymbol *KeySym) const override;
const MCExpr *lowerRelativeReference(const GlobalValue *LHS,
const GlobalValue *RHS,
const TargetMachine &TM) const override;
};
} // end namespace llvm
#endif // LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
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