X86MCCodeEmitter.cpp File Reference (original) (raw)

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Macros
#define	DEBUG_TYPE "mccodeemitter"

Enumerations
enum	GlobalOffsetTableExprKind { GOT_None, GOT_Normal, GOT_SymDiff }

Functions
static uint8_t	modRMByte (unsigned Mod, unsigned RegOpcode, unsigned RM)
static void	emitConstant (uint64_t Val, unsigned Size, SmallVectorImpl< char > &CB)
static bool	isDispOrCDisp8 (uint64_t TSFlags, int Value, int &ImmOffset)
	Determine if this immediate can fit in a disp8 or a compressed disp8 for EVEX instructions.
static MCFixupKind	getImmFixupKind (uint64_t TSFlags)
static GlobalOffsetTableExprKind	startsWithGlobalOffsetTable (const MCExpr *Expr)
	Check if this expression starts with GLOBAL_OFFSET_TABLE and if it is of the form _GLOBAL_OFFSET_TABLE_-symbol.
static bool	hasSecRelSymbolRef (const MCExpr *Expr)
static bool	isPCRel32Branch (const MCInst &MI, const MCInstrInfo &MCII)

◆ DEBUG_TYPE

#define DEBUG_TYPE "mccodeemitter"

◆ GlobalOffsetTableExprKind

◆ emitConstant()

◆ getImmFixupKind()

◆ hasSecRelSymbolRef()

◆ isDispOrCDisp8()

bool isDispOrCDisp8 ( uint64_t TSFlags, int Value, int & ImmOffset )	static

◆ isPCRel32Branch()

◆ modRMByte()

◆ startsWithGlobalOffsetTable()

Check if this expression starts with GLOBAL_OFFSET_TABLE and if it is of the form _GLOBAL_OFFSET_TABLE_-symbol.

This is needed to support PIC on ELF i386 as GLOBAL_OFFSET_TABLE is magical. We check only simple case that are know to be used: GLOBAL_OFFSET_TABLE by itself or at the start of a binary expression.

TODO: Move this to X86AsmBackend.cpp at relocation decision phase so that we don't have to mess with MCExpr.

Definition at line 477 of file X86MCCodeEmitter.cpp.

References llvm::MCExpr::Binary, llvm::MCExpr::getKind(), llvm::MCBinaryExpr::getLHS(), llvm::MCSymbol::getName(), llvm::MCBinaryExpr::getRHS(), GOT_None, GOT_Normal, GOT_SymDiff, llvm::Ref, RHS, and llvm::MCExpr::SymbolRef.