ARMAsmBackend.cpp File Reference

#include "MCTargetDesc/ARMAsmBackend.h"
#include "MCTargetDesc/ARMAddressingModes.h"
#include "MCTargetDesc/ARMAsmBackendDarwin.h"
#include "MCTargetDesc/ARMAsmBackendELF.h"
#include "MCTargetDesc/ARMAsmBackendWinCOFF.h"
#include "MCTargetDesc/ARMFixupKinds.h"
#include "MCTargetDesc/ARMMCAsmInfo.h"
#include "MCTargetDesc/ARMMCTargetDesc.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbolMachO.h"
#include "llvm/MC/MCTargetOptions.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/EndianStream.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/BinaryFormat/ELFRelocs/ARM.def"

Go to the source code of this file.

Namespaces
namespace	CU

Macros
#define	ELF_RELOC(X, Y)

Enumerations
enum	CU::CompactUnwindEncodings {   CU::UNWIND_ARM_MODE_MASK = 0x0F000000 , CU::UNWIND_ARM_MODE_FRAME = 0x01000000 , CU::UNWIND_ARM_MODE_FRAME_D = 0x02000000 , CU::UNWIND_ARM_MODE_DWARF = 0x04000000 ,   CU::UNWIND_ARM_FRAME_STACK_ADJUST_MASK = 0x00C00000 , CU::UNWIND_ARM_FRAME_FIRST_PUSH_R4 = 0x00000001 , CU::UNWIND_ARM_FRAME_FIRST_PUSH_R5 = 0x00000002 , CU::UNWIND_ARM_FRAME_FIRST_PUSH_R6 = 0x00000004 ,   CU::UNWIND_ARM_FRAME_SECOND_PUSH_R8 = 0x00000008 , CU::UNWIND_ARM_FRAME_SECOND_PUSH_R9 = 0x00000010 , CU::UNWIND_ARM_FRAME_SECOND_PUSH_R10 = 0x00000020 , CU::UNWIND_ARM_FRAME_SECOND_PUSH_R11 = 0x00000040 ,   CU::UNWIND_ARM_FRAME_SECOND_PUSH_R12 = 0x00000080 , CU::UNWIND_ARM_FRAME_D_REG_COUNT_MASK = 0x00000F00 , CU::UNWIND_ARM_DWARF_SECTION_OFFSET = 0x00FFFFFF }
	Compact unwind encoding values. More...

Functions
static const char *	checkPCRelOffset (uint64_t Value, int64_t Min, int64_t Max)
static bool	needsInterworking (const MCAssembler &Asm, const MCSymbol *Sym, unsigned FixupKind)
static uint32_t	swapHalfWords (uint32_t Value, bool IsLittleEndian)
static uint32_t	joinHalfWords (uint32_t FirstHalf, uint32_t SecondHalf, bool IsLittleEndian)
static unsigned	getFixupKindNumBytes (unsigned Kind)
	getFixupKindNumBytes - The number of bytes the fixup may change.
static unsigned	getFixupKindContainerSizeBytes (unsigned Kind)
	getFixupKindContainerSizeBytes - The number of bytes of the container involved in big endian.
static MCAsmBackend *	createARMAsmBackend (const Target &T, const MCSubtargetInfo &STI, const MCRegisterInfo &MRI, const MCTargetOptions &Options, llvm::endianness Endian)

Macro Definition Documentation

ELF_RELOC

#define ELF_RELOC	(		X,
			Y )

Value:

.Case(#X, Y)

Function Documentation

checkPCRelOffset()

const char * checkPCRelOffset ( uint64_t Value, int64_t Min, int64_t Max )

static

Definition at line 210 of file ARMAsmBackend.cpp.

References llvm::Offset.

Referenced by llvm::ARMAsmBackend::reasonForFixupRelaxation().

createARMAsmBackend()

MCAsmBackend * createARMAsmBackend ( const Target & T, const MCSubtargetInfo & STI, const MCRegisterInfo & MRI, const MCTargetOptions & Options, llvm::endianness Endian )

static

Definition at line 1357 of file ARMAsmBackend.cpp.

References assert(), llvm::Triple::COFF, llvm::Triple::ELF, llvm::ELF::ELFOSABI_ARM_FDPIC, llvm::Triple::getObjectFormat(), llvm::Triple::getOS(), llvm::MCELFObjectTargetWriter::getOSABI(), llvm::MCSubtargetInfo::getTargetTriple(), llvm::Triple::isOSBinFormatELF(), llvm::Triple::isOSWindows(), llvm_unreachable, llvm::Triple::MachO, MRI, Options, and T.

Referenced by llvm::createARMBEAsmBackend(), and llvm::createARMLEAsmBackend().

getFixupKindContainerSizeBytes()

unsigned getFixupKindContainerSizeBytes ( unsigned Kind )

static

getFixupKindContainerSizeBytes - The number of bytes of the container involved in big endian.

Definition at line 1022 of file ARMAsmBackend.cpp.

References llvm::ARM::fixup_arm_adr_pcrel_12, llvm::ARM::fixup_arm_blx, llvm::ARM::fixup_arm_condbl, llvm::ARM::fixup_arm_condbranch, llvm::ARM::fixup_arm_ldst_pcrel_12, llvm::ARM::fixup_arm_mod_imm, llvm::ARM::fixup_arm_movt_hi16, llvm::ARM::fixup_arm_movw_lo16, llvm::ARM::fixup_arm_pcrel_10, llvm::ARM::fixup_arm_pcrel_10_unscaled, llvm::ARM::fixup_arm_pcrel_9, llvm::ARM::fixup_arm_thumb_bcc, llvm::ARM::fixup_arm_thumb_bl, llvm::ARM::fixup_arm_thumb_blx, llvm::ARM::fixup_arm_thumb_br, llvm::ARM::fixup_arm_thumb_cb, llvm::ARM::fixup_arm_thumb_cp, llvm::ARM::fixup_arm_thumb_lower_0_7, llvm::ARM::fixup_arm_thumb_lower_8_15, llvm::ARM::fixup_arm_thumb_upper_0_7, llvm::ARM::fixup_arm_thumb_upper_8_15, llvm::ARM::fixup_arm_uncondbl, llvm::ARM::fixup_arm_uncondbranch, llvm::ARM::fixup_bf_branch, llvm::ARM::fixup_bf_target, llvm::ARM::fixup_bfc_target, llvm::ARM::fixup_bfcsel_else_target, llvm::ARM::fixup_bfl_target, llvm::ARM::fixup_le, llvm::ARM::fixup_t2_adr_pcrel_12, llvm::ARM::fixup_t2_condbranch, llvm::ARM::fixup_t2_ldst_pcrel_12, llvm::ARM::fixup_t2_movt_hi16, llvm::ARM::fixup_t2_movw_lo16, llvm::ARM::fixup_t2_pcrel_10, llvm::ARM::fixup_t2_pcrel_9, llvm::ARM::fixup_t2_so_imm, llvm::ARM::fixup_t2_uncondbranch, llvm::ARM::fixup_thumb_adr_pcrel_10, llvm::ARM::fixup_wls, llvm::FK_Data_1, llvm::FK_Data_2, llvm::FK_Data_4, and llvm_unreachable.

Referenced by llvm::ARMAsmBackend::applyFixup().

getFixupKindNumBytes()

unsigned getFixupKindNumBytes ( unsigned Kind )

static

getFixupKindNumBytes - The number of bytes the fixup may change.

Definition at line 956 of file ARMAsmBackend.cpp.

References llvm::ARM::fixup_arm_adr_pcrel_12, llvm::ARM::fixup_arm_blx, llvm::ARM::fixup_arm_condbl, llvm::ARM::fixup_arm_condbranch, llvm::ARM::fixup_arm_ldst_abs_12, llvm::ARM::fixup_arm_ldst_pcrel_12, llvm::ARM::fixup_arm_mod_imm, llvm::ARM::fixup_arm_movt_hi16, llvm::ARM::fixup_arm_movw_lo16, llvm::ARM::fixup_arm_pcrel_10, llvm::ARM::fixup_arm_pcrel_10_unscaled, llvm::ARM::fixup_arm_pcrel_9, llvm::ARM::fixup_arm_thumb_bcc, llvm::ARM::fixup_arm_thumb_bl, llvm::ARM::fixup_arm_thumb_blx, llvm::ARM::fixup_arm_thumb_br, llvm::ARM::fixup_arm_thumb_cb, llvm::ARM::fixup_arm_thumb_cp, llvm::ARM::fixup_arm_thumb_lower_0_7, llvm::ARM::fixup_arm_thumb_lower_8_15, llvm::ARM::fixup_arm_thumb_upper_0_7, llvm::ARM::fixup_arm_thumb_upper_8_15, llvm::ARM::fixup_arm_uncondbl, llvm::ARM::fixup_arm_uncondbranch, llvm::ARM::fixup_bf_branch, llvm::ARM::fixup_bf_target, llvm::ARM::fixup_bfc_target, llvm::ARM::fixup_bfcsel_else_target, llvm::ARM::fixup_bfl_target, llvm::ARM::fixup_le, llvm::ARM::fixup_t2_adr_pcrel_12, llvm::ARM::fixup_t2_condbranch, llvm::ARM::fixup_t2_ldst_pcrel_12, llvm::ARM::fixup_t2_movt_hi16, llvm::ARM::fixup_t2_movw_lo16, llvm::ARM::fixup_t2_pcrel_10, llvm::ARM::fixup_t2_pcrel_9, llvm::ARM::fixup_t2_so_imm, llvm::ARM::fixup_t2_uncondbranch, llvm::ARM::fixup_thumb_adr_pcrel_10, llvm::ARM::fixup_wls, llvm::FK_Data_1, llvm::FK_Data_2, llvm::FK_Data_4, llvm::FK_SecRel_2, llvm::FK_SecRel_4, and llvm_unreachable.

joinHalfWords()

uint32_t joinHalfWords ( uint32_t FirstHalf, uint32_t SecondHalf, bool IsLittleEndian )

static

Definition at line 404 of file ARMAsmBackend.cpp.

Referenced by llvm::ARMAsmBackend::adjustFixupValue().

needsInterworking()

bool needsInterworking ( const MCAssembler & Asm, const MCSymbol * Sym, unsigned FixupKind )

static

Definition at line 296 of file ARMAsmBackend.cpp.

References llvm::ARM::fixup_arm_thumb_bl, llvm::ARM::fixup_arm_thumb_br, llvm::ARM::fixup_arm_uncondbranch, llvm::ARM::fixup_t2_condbranch, llvm::ARM::fixup_t2_uncondbranch, llvm::FixupKind(), getType(), llvm::ELF::STT_FUNC, and llvm::ELF::STT_GNU_IFUNC.

Referenced by llvm::ARMAsmBackend::fixupNeedsRelaxationAdvanced(), and llvm::ARMAsmBackend::shouldForceRelocation().

swapHalfWords()

uint32_t swapHalfWords ( uint32_t Value, bool IsLittleEndian )

static

Definition at line 393 of file ARMAsmBackend.cpp.

Referenced by llvm::ARMAsmBackend::adjustFixupValue().