MCDwarf.cpp File Reference

#include "llvm/MC/MCDwarf.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Config/config.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"

Include dependency graph for MCDwarf.cpp:

Go to the source code of this file.

Classes
struct	llvm::DenseMapInfo< CIEKey >
Namespaces
namespace	llvm
	List of target independent CodeGen pass IDs.
Defines
#define	SPECIAL_ADDR(op)   (((op) - DWARF2_LINE_OPCODE_BASE)/DWARF2_LINE_RANGE)
#define	MAX_SPECIAL_ADDR_DELTA   SPECIAL_ADDR(255)
#define	DWARF2_LINE_OPCODE_BASE   13
#define	DWARF2_LINE_BASE   -5
#define	DWARF2_LINE_RANGE   14
Functions
static uint64_t	ScaleAddrDelta (MCContext &Context, uint64_t AddrDelta)
static const MCExpr *	MakeStartMinusEndExpr (const MCStreamer &MCOS, const MCSymbol &Start, const MCSymbol &End, int IntVal)
static void	EmitDwarfLineTable (MCObjectStreamer *MCOS, const MCSection *Section, const MCLineSection::MCLineEntryCollection &LineEntries)
static const MCExpr *	forceExpAbs (MCStreamer &OS, const MCExpr *Expr)
static void	emitAbsValue (MCStreamer &OS, const MCExpr *Value, unsigned Size)
static void	EmitAbbrev (MCStreamer *MCOS, uint64_t Name, uint64_t Form)
static void	EmitGenDwarfAbbrev (MCStreamer *MCOS)
static void	EmitGenDwarfAranges (MCStreamer *MCOS, const MCSymbol *InfoSectionSymbol)
static void	EmitGenDwarfInfo (MCStreamer *MCOS, const MCSymbol *AbbrevSectionSymbol, const MCSymbol *LineSectionSymbol, const MCSymbol *RangesSectionSymbol)
static void	EmitGenDwarfRanges (MCStreamer *MCOS)
static int	getDataAlignmentFactor (MCStreamer &streamer)
static unsigned	getSizeForEncoding (MCStreamer &streamer, unsigned symbolEncoding)
static void	emitFDESymbol (MCObjectStreamer &streamer, const MCSymbol &symbol, unsigned symbolEncoding, bool isEH)
static void	EmitPersonality (MCStreamer &streamer, const MCSymbol &symbol, unsigned symbolEncoding)
static void	emitEncodingByte (MCObjectStreamer &Streamer, unsigned Encoding)

---

Define Documentation

#define DWARF2_LINE_BASE   -5

Definition at line 46 of file MCDwarf.cpp.

Referenced by llvm::MCDwarfLineTableHeader::Emit(), and llvm::MCDwarfLineAddr::Encode().

#define DWARF2_LINE_OPCODE_BASE   13

Definition at line 42 of file MCDwarf.cpp.

Referenced by llvm::MCDwarfLineTableHeader::Emit(), and llvm::MCDwarfLineAddr::Encode().

#define DWARF2_LINE_RANGE   14

Definition at line 49 of file MCDwarf.cpp.

Referenced by llvm::MCDwarfLineTableHeader::Emit(), and llvm::MCDwarfLineAddr::Encode().

#define MAX_SPECIAL_ADDR_DELTA   SPECIAL_ADDR(255)

Definition at line 37 of file MCDwarf.cpp.

Referenced by llvm::MCDwarfLineAddr::Encode().

#define SPECIAL_ADDR

(

op

)

(((op) - DWARF2_LINE_OPCODE_BASE)/DWARF2_LINE_RANGE)

Definition at line 34 of file MCDwarf.cpp.

---

Function Documentation

static void EmitAbbrev	(	MCStreamer *	MCOS,
		uint64_t	Name,
		uint64_t	Form
	)		[static]

Definition at line 523 of file MCDwarf.cpp.

References llvm::MCStreamer::EmitULEB128IntValue().

Referenced by EmitGenDwarfAbbrev().

static void emitAbsValue	(	MCStreamer &	OS,
		const MCExpr *	Value,
		unsigned	Size
	)		[static]

Definition at line 261 of file MCDwarf.cpp.

References SISrcMods::ABS, llvm::MCStreamer::EmitValue(), and forceExpAbs().

Referenced by llvm::MCDwarfLineTableHeader::Emit(), emitFDESymbol(), EmitGenDwarfAranges(), EmitGenDwarfInfo(), and EmitGenDwarfRanges().

static void EmitDwarfLineTable	(	MCObjectStreamer *	MCOS,
		const MCSection *	Section,
		const MCLineSection::MCLineEntryCollection &	LineEntries
	)		[inline, static]

Definition at line 118 of file MCDwarf.cpp.

References llvm::MCContext::CreateTempSymbol(), llvm::dwarf::DW_LNE_set_discriminator, llvm::dwarf::DW_LNS_extended_op, llvm::dwarf::DW_LNS_negate_stmt, llvm::dwarf::DW_LNS_set_basic_block, llvm::dwarf::DW_LNS_set_column, llvm::dwarf::DW_LNS_set_epilogue_begin, llvm::dwarf::DW_LNS_set_file, llvm::dwarf::DW_LNS_set_isa, llvm::dwarf::DW_LNS_set_prologue_end, DWARF2_FLAG_BASIC_BLOCK, DWARF2_FLAG_EPILOGUE_BEGIN, DWARF2_FLAG_IS_STMT, DWARF2_FLAG_PROLOGUE_END, DWARF2_LINE_DEFAULT_IS_STMT, llvm::MCObjectStreamer::EmitDwarfAdvanceLineAddr(), llvm::MCStreamer::EmitIntValue(), llvm::MCObjectStreamer::EmitLabel(), llvm::MCStreamer::EmitULEB128IntValue(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCObjectFileInfo::getDwarfLineSection(), llvm::MCContext::getObjectFileInfo(), llvm::MCAsmInfo::getPointerSize(), llvm::getULEB128Size(), INT64_MAX, and llvm::MCStreamer::SwitchSection().

Referenced by llvm::MCDwarfLineTable::EmitCU().

static void emitEncodingByte	(	MCObjectStreamer &	Streamer,
		unsigned	Encoding
	)		[static]

Definition at line 1051 of file MCDwarf.cpp.

References llvm::MCStreamer::EmitIntValue().

static void emitFDESymbol	(	MCObjectStreamer &	streamer,
		const MCSymbol &	symbol,
		unsigned	symbolEncoding,
		bool	isEH
	)		[static]

Definition at line 992 of file MCDwarf.cpp.

References llvm::MCAsmInfo::doDwarfFDESymbolsUseAbsDiff(), emitAbsValue(), llvm::MCStreamer::EmitValue(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCAsmInfo::getExprForFDESymbol(), and getSizeForEncoding().

static void EmitGenDwarfAbbrev

(

MCStreamer *

MCOS

)

[static]

Definition at line 530 of file MCDwarf.cpp.

References llvm::dwarf::DW_AT_APPLE_flags, llvm::dwarf::DW_AT_comp_dir, llvm::dwarf::DW_AT_decl_file, llvm::dwarf::DW_AT_decl_line, llvm::dwarf::DW_AT_high_pc, llvm::dwarf::DW_AT_language, llvm::dwarf::DW_AT_low_pc, llvm::dwarf::DW_AT_name, llvm::dwarf::DW_AT_producer, llvm::dwarf::DW_AT_prototyped, llvm::dwarf::DW_AT_ranges, llvm::dwarf::DW_AT_stmt_list, llvm::dwarf::DW_CHILDREN_no, llvm::dwarf::DW_CHILDREN_yes, llvm::dwarf::DW_FORM_addr, llvm::dwarf::DW_FORM_data2, llvm::dwarf::DW_FORM_data4, llvm::dwarf::DW_FORM_flag, llvm::dwarf::DW_FORM_string, llvm::dwarf::DW_TAG_compile_unit, llvm::dwarf::DW_TAG_label, llvm::dwarf::DW_TAG_unspecified_parameters, EmitAbbrev(), llvm::MCStreamer::EmitIntValue(), llvm::MCStreamer::EmitULEB128IntValue(), llvm::StringRef::empty(), llvm::MCContext::getCompilationDir(), llvm::MCStreamer::getContext(), llvm::MCObjectFileInfo::getDwarfAbbrevSection(), llvm::MCContext::getDwarfDebugFlags(), llvm::MCContext::getGenDwarfSectionSyms(), llvm::MCContext::getObjectFileInfo(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::size(), and llvm::MCStreamer::SwitchSection().

Referenced by llvm::MCGenDwarfInfo::Emit().

static void EmitGenDwarfAranges	(	MCStreamer *	MCOS,
		const MCSymbol *	InfoSectionSymbol
	)		[static]

Definition at line 580 of file MCDwarf.cpp.

References llvm::MCSymbolRefExpr::Create(), emitAbsValue(), llvm::MCStreamer::EmitIntValue(), llvm::MCStreamer::EmitSymbolValue(), llvm::MCStreamer::EmitValue(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCObjectFileInfo::getDwarfARangesSection(), llvm::MCContext::getGenDwarfSectionSyms(), llvm::MCContext::getObjectFileInfo(), llvm::MCAsmInfo::getPointerSize(), MakeStartMinusEndExpr(), llvm::MCAsmInfo::needsDwarfSectionOffsetDirective(), llvm::MCStreamer::SwitchSection(), and llvm::MCSymbolRefExpr::VK_None.

Referenced by llvm::MCGenDwarfInfo::Emit().

static void EmitGenDwarfInfo	(	MCStreamer *	MCOS,
		const MCSymbol *	AbbrevSectionSymbol,
		const MCSymbol *	LineSectionSymbol,
		const MCSymbol *	RangesSectionSymbol
	)		[static]

Definition at line 652 of file MCDwarf.cpp.

References llvm::MapVector< KeyT, ValueT, MapType, VectorType >::begin(), llvm::MCSymbolRefExpr::Create(), llvm::MCContext::CreateTempSymbol(), llvm::dwarf::DW_LANG_Mips_Assembler, emitAbsValue(), llvm::MCStreamer::EmitBytes(), llvm::MCStreamer::EmitIntValue(), llvm::MCStreamer::EmitLabel(), llvm::MCStreamer::EmitSymbolValue(), llvm::MCStreamer::EmitULEB128IntValue(), llvm::MCStreamer::EmitValue(), llvm::StringRef::empty(), llvm::sys::path::get_separator(), llvm::MCContext::getAsmInfo(), llvm::MCContext::getCompilationDir(), llvm::MCStreamer::getContext(), llvm::MCContext::getDwarfDebugFlags(), llvm::MCContext::getDwarfDebugProducer(), llvm::MCObjectFileInfo::getDwarfInfoSection(), llvm::MCContext::getDwarfVersion(), llvm::MCContext::getGenDwarfSectionSyms(), llvm::MCContext::getMCDwarfDirs(), llvm::MCContext::getMCDwarfFiles(), llvm::MCContext::getMCGenDwarfLabelEntries(), llvm::MCContext::getObjectFileInfo(), llvm::MCAsmInfo::getPointerSize(), MakeStartMinusEndExpr(), Name, llvm::MCAsmInfo::needsDwarfSectionOffsetDirective(), PACKAGE_VERSION, llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::MCStreamer::SwitchSection(), and llvm::MCSymbolRefExpr::VK_None.

Referenced by llvm::MCGenDwarfInfo::Emit().

static void EmitGenDwarfRanges

(

MCStreamer *

MCOS

)

[static]

Definition at line 816 of file MCDwarf.cpp.

References llvm::MCSymbolRefExpr::Create(), emitAbsValue(), llvm::MCStreamer::EmitFill(), llvm::MCStreamer::EmitIntValue(), llvm::MCStreamer::EmitValue(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCObjectFileInfo::getDwarfRangesSection(), llvm::MCContext::getGenDwarfSectionSyms(), llvm::MCContext::getObjectFileInfo(), llvm::MCAsmInfo::getPointerSize(), MakeStartMinusEndExpr(), llvm::COFF::SectionSize, llvm::MCStreamer::SwitchSection(), and llvm::MCSymbolRefExpr::VK_None.

Referenced by llvm::MCGenDwarfInfo::Emit().

static void EmitPersonality	(	MCStreamer &	streamer,
		const MCSymbol &	symbol,
		unsigned	symbolEncoding
	)		[static]

Definition at line 1006 of file MCDwarf.cpp.

References llvm::MCStreamer::EmitValue(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCAsmInfo::getExprForPersonalitySymbol(), and getSizeForEncoding().

static const MCExpr* forceExpAbs	(	MCStreamer &	OS,
		const MCExpr *	Expr
	)		[static]

Definition at line 250 of file MCDwarf.cpp.

References SISrcMods::ABS, llvm::MCSymbolRefExpr::Create(), llvm::MCContext::CreateTempSymbol(), llvm::MCStreamer::EmitAssignment(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), and llvm::MCAsmInfo::hasAggressiveSymbolFolding().

Referenced by emitAbsValue().

static int getDataAlignmentFactor

(

MCStreamer &

streamer

)

[static]

Definition at line 961 of file MCDwarf.cpp.

References llvm::MCContext::getAsmInfo(), llvm::MCAsmInfo::getCalleeSaveStackSlotSize(), llvm::MCStreamer::getContext(), and llvm::MCAsmInfo::isStackGrowthDirectionUp().

static unsigned getSizeForEncoding	(	MCStreamer &	streamer,
		unsigned	symbolEncoding
	)		[static]

Definition at line 971 of file MCDwarf.cpp.

References llvm::dwarf::DW_EH_PE_absptr, llvm::dwarf::DW_EH_PE_sdata2, llvm::dwarf::DW_EH_PE_sdata4, llvm::dwarf::DW_EH_PE_sdata8, llvm::dwarf::DW_EH_PE_signed, llvm::dwarf::DW_EH_PE_udata2, llvm::dwarf::DW_EH_PE_udata4, llvm::dwarf::DW_EH_PE_udata8, llvm::format(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCAsmInfo::getPointerSize(), and llvm_unreachable.

Referenced by emitFDESymbol(), and EmitPersonality().

static const MCExpr* MakeStartMinusEndExpr	(	const MCStreamer &	MCOS,
		const MCSymbol &	Start,
		const MCSymbol &	End,
		int	IntVal
	)		[inline, static]

Definition at line 95 of file MCDwarf.cpp.

References llvm::MCConstantExpr::Create(), llvm::MCSymbolRefExpr::Create(), llvm::MCBinaryExpr::Create(), llvm::MCStreamer::getContext(), llvm::MCBinaryExpr::Sub, and llvm::MCSymbolRefExpr::VK_None.

Referenced by llvm::MCDwarfLineTableHeader::Emit(), EmitGenDwarfAranges(), EmitGenDwarfInfo(), and EmitGenDwarfRanges().

static uint64_t ScaleAddrDelta	(	MCContext &	Context,
		uint64_t	AddrDelta
	)		[inline, static]

Definition at line 51 of file MCDwarf.cpp.

References llvm::MCContext::getAsmInfo(), and llvm::MCAsmInfo::getMinInstAlignment().

Referenced by llvm::MCDwarfLineAddr::Encode(), and llvm::MCDwarfFrameEmitter::EncodeAdvanceLoc().