MCAsmBackend.cpp Source File (original) (raw)

21#include

22#include

23#include

25using namespace llvm;

28 : Endian(Endian), RelaxFixupKind(RelaxFixupKind) {}

32std::unique_ptr

36 switch (TW->getFormat()) {

38 return std::make_unique(

39 cast(std::move(TW)), OS, IsLE);

42 cast(std::move(TW)), OS);

44 return std::make_unique(

45 cast(std::move(TW)), OS, IsLE);

48 cast(std::move(TW)), OS);

57 cast(std::move(TW)), OS);

59 return std::make_unique(

60 cast(std::move(TW)), OS);

61 default:

63 }

64}

66std::unique_ptr

70 switch (TW->getFormat()) {

73 cast(std::move(TW)), OS, DwoOS);

75 return std::make_unique(

76 cast(std::move(TW)), OS, DwoOS,

80 cast(std::move(TW)), OS, DwoOS);

81 default:

83 }

84}

87 return std::nullopt;

88}

92 {"FK_NONE", 0, 0, 0},

93 {"FK_Data_1", 0, 8, 0},

94 {"FK_Data_2", 0, 16, 0},

95 {"FK_Data_4", 0, 32, 0},

96 {"FK_Data_8", 0, 64, 0},

97 {"FK_Data_leb128", 0, 0, 0},

102 {"FK_GPRel_1", 0, 8, 0},

103 {"FK_GPRel_2", 0, 16, 0},

104 {"FK_GPRel_4", 0, 32, 0},

105 {"FK_GPRel_8", 0, 64, 0},

106 {"FK_DTPRel_4", 0, 32, 0},

107 {"FK_DTPRel_8", 0, 64, 0},

108 {"FK_TPRel_4", 0, 32, 0},

109 {"FK_TPRel_8", 0, 64, 0},

110 {"FK_SecRel_1", 0, 8, 0},

111 {"FK_SecRel_2", 0, 16, 0},

112 {"FK_SecRel_4", 0, 32, 0},

113 {"FK_SecRel_8", 0, 64, 0},

114 };

115

116 assert((size_t)Kind <= std::size(Builtins) && "Unknown fixup kind");

117 return Builtins[Kind];

118}

119

124 const bool WasForced) const {

125 if (!Resolved)

126 return true;

128}

129

131

132

133 if ( Sym )

134 return true;

135

136 if ( Sym ->isMachO())

138

140

141

142

143 return name == "___gxx_personality_v0" || name == "___objc_personality_v0";

144}

static RegisterPass< DebugifyFunctionPass > DF("debugify-function", "Attach debug info to a function")

PowerPC TLS Dynamic Call Fixup

assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())

std::unique_ptr< MCObjectWriter > createObjectWriter(raw_pwrite_stream &OS) const

Create a new MCObjectWriter instance for use by the assembler backend to emit the final object file.

std::unique_ptr< MCObjectWriter > createDwoObjectWriter(raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS) const

Create an MCObjectWriter that writes two object files: a .o file which is linked into the final progr...

const llvm::endianness Endian

MCAsmBackend(llvm::endianness Endian, unsigned RelaxFixupKind=MaxFixupKind)

virtual bool fixupNeedsRelaxationAdvanced(const MCAssembler &Asm, const MCFixup &Fixup, bool Resolved, uint64_t Value, const MCRelaxableFragment *DF, const bool WasForced) const

Target specific predicate for whether a given fixup requires the associated instruction to be relaxed...

virtual bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value) const

Simple predicate for targets where !Resolved implies requiring relaxation.

bool isDarwinCanonicalPersonality(const MCSymbol *Sym) const

virtual std::unique_ptr< MCObjectTargetWriter > createObjectTargetWriter() const =0

virtual const MCFixupKindInfo & getFixupKindInfo(MCFixupKind Kind) const

Get information on a fixup kind.

virtual std::optional< MCFixupKind > getFixupKind(StringRef Name) const

Map a relocation name used in .reloc to a fixup kind.

Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...

A relaxable fragment holds on to its MCInst, since it may need to be relaxed during the assembler lay...

MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...

StringRef - Represent a constant reference to a string, i.e.

LLVM Value Representation.

An abstract base class for streams implementations that also support a pwrite operation.

#define llvm_unreachable(msg)

Marks that the current location is not supposed to be reachable.

This is an optimization pass for GlobalISel generic memory operations.

std::unique_ptr< MCObjectWriter > createGOFFObjectWriter(std::unique_ptr< MCGOFFObjectTargetWriter > MOTW, raw_pwrite_stream &OS)

Construct a new GOFF writer instance.

std::unique_ptr< MCObjectWriter > createWasmObjectWriter(std::unique_ptr< MCWasmObjectTargetWriter > MOTW, raw_pwrite_stream &OS)

Construct a new Wasm writer instance.

void report_fatal_error(Error Err, bool gen_crash_diag=true)

Report a serious error, calling any installed error handler.

std::unique_ptr< MCObjectWriter > createWinCOFFDwoObjectWriter(std::unique_ptr< MCWinCOFFObjectTargetWriter > MOTW, raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS)

MCFixupKind

Extensible enumeration to represent the type of a fixup.

std::unique_ptr< MCObjectWriter > createWinCOFFObjectWriter(std::unique_ptr< MCWinCOFFObjectTargetWriter > MOTW, raw_pwrite_stream &OS)

Construct a new Win COFF writer instance.

std::unique_ptr< MCObjectWriter > createSPIRVObjectWriter(std::unique_ptr< MCSPIRVObjectTargetWriter > MOTW, raw_pwrite_stream &OS)

Construct a new SPIR-V writer instance.

std::unique_ptr< MCObjectWriter > createXCOFFObjectWriter(std::unique_ptr< MCXCOFFObjectTargetWriter > MOTW, raw_pwrite_stream &OS)

std::unique_ptr< MCObjectWriter > createWasmDwoObjectWriter(std::unique_ptr< MCWasmObjectTargetWriter > MOTW, raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS)

Target independent information on a fixup kind.

@ FKF_IsPCRel

Is this fixup kind PCrelative? This is used by the assembler backend to evaluate fixup values in a ta...