LLVM 18.0.0git
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#include "llvm/MC/MCDwarf.h"
Public Types | |
enum | OpType { OpSameValue , OpRememberState , OpRestoreState , OpOffset , OpLLVMDefAspaceCfa , OpDefCfaRegister , OpDefCfaOffset , OpDefCfa , OpRelOffset , OpAdjustCfaOffset , OpEscape , OpRestore , OpUndefined , OpRegister , OpWindowSave , OpNegateRAState , OpGnuArgsSize } |
Public Member Functions | |
OpType | getOperation () const |
MCSymbol * | getLabel () const |
unsigned | getRegister () const |
unsigned | getRegister2 () const |
unsigned | getAddressSpace () const |
int | getOffset () const |
StringRef | getValues () const |
StringRef | getComment () const |
SMLoc | getLoc () const |
Static Public Member Functions | |
static MCCFIInstruction | cfiDefCfa (MCSymbol *L, unsigned Register, int Offset, SMLoc Loc={}) |
.cfi_def_cfa defines a rule for computing CFA as: take address from Register and add Offset to it. | |
static MCCFIInstruction | createDefCfaRegister (MCSymbol *L, unsigned Register, SMLoc Loc={}) |
.cfi_def_cfa_register modifies a rule for computing CFA. | |
static MCCFIInstruction | cfiDefCfaOffset (MCSymbol *L, int Offset, SMLoc Loc={}) |
.cfi_def_cfa_offset modifies a rule for computing CFA. | |
static MCCFIInstruction | createAdjustCfaOffset (MCSymbol *L, int Adjustment, SMLoc Loc={}) |
.cfi_adjust_cfa_offset Same as .cfi_def_cfa_offset, but Offset is a relative value that is added/subtracted from the previous offset. | |
static MCCFIInstruction | createLLVMDefAspaceCfa (MCSymbol *L, unsigned Register, int Offset, unsigned AddressSpace, SMLoc Loc) |
.cfi_llvm_def_aspace_cfa defines the rule for computing the CFA to be the result of evaluating the DWARF operation expression DW_OP_constu AS; DW_OP_aspace_bregx R, B as a location description. | |
static MCCFIInstruction | createOffset (MCSymbol *L, unsigned Register, int Offset, SMLoc Loc={}) |
.cfi_offset Previous value of Register is saved at offset Offset from CFA. | |
static MCCFIInstruction | createRelOffset (MCSymbol *L, unsigned Register, int Offset, SMLoc Loc={}) |
.cfi_rel_offset Previous value of Register is saved at offset Offset from the current CFA register. | |
static MCCFIInstruction | createRegister (MCSymbol *L, unsigned Register1, unsigned Register2, SMLoc Loc={}) |
.cfi_register Previous value of Register1 is saved in register Register2. | |
static MCCFIInstruction | createWindowSave (MCSymbol *L, SMLoc Loc={}) |
.cfi_window_save SPARC register window is saved. | |
static MCCFIInstruction | createNegateRAState (MCSymbol *L, SMLoc Loc={}) |
.cfi_negate_ra_state AArch64 negate RA state. | |
static MCCFIInstruction | createRestore (MCSymbol *L, unsigned Register, SMLoc Loc={}) |
.cfi_restore says that the rule for Register is now the same as it was at the beginning of the function, after all initial instructions added by .cfi_startproc were executed. | |
static MCCFIInstruction | createUndefined (MCSymbol *L, unsigned Register, SMLoc Loc={}) |
.cfi_undefined From now on the previous value of Register can't be restored anymore. | |
static MCCFIInstruction | createSameValue (MCSymbol *L, unsigned Register, SMLoc Loc={}) |
.cfi_same_value Current value of Register is the same as in the previous frame. | |
static MCCFIInstruction | createRememberState (MCSymbol *L, SMLoc Loc={}) |
.cfi_remember_state Save all current rules for all registers. | |
static MCCFIInstruction | createRestoreState (MCSymbol *L, SMLoc Loc={}) |
.cfi_restore_state Restore the previously saved state. | |
static MCCFIInstruction | createEscape (MCSymbol *L, StringRef Vals, SMLoc Loc={}, StringRef Comment="") |
.cfi_escape Allows the user to add arbitrary bytes to the unwind info. | |
static MCCFIInstruction | createGnuArgsSize (MCSymbol *L, int Size, SMLoc Loc={}) |
A special wrapper for .cfi_escape that indicates GNU_ARGS_SIZE. | |
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inlinestatic |
.cfi_def_cfa defines a rule for computing CFA as: take address from Register and add Offset to it.
Definition at line 540 of file MCDwarf.h.
Referenced by createAArch64MCAsmInfo(), createARCMCAsmInfo(), createARMMCAsmInfo(), createCSKYMCAsmInfo(), llvm::createDefCFA(), createHexagonMCAsmInfo(), createLoongArchMCAsmInfo(), createM68kMCAsmInfo(), createMSP430MCAsmInfo(), createPPCMCAsmInfo(), createRISCVMCAsmInfo(), createSparcMCAsmInfo(), createSparcV9MCAsmInfo(), createSystemZMCAsmInfo(), createVEMCAsmInfo(), createX86MCAsmInfo(), createXCoreMCAsmInfo(), llvm::MCStreamer::emitCFIDefCfa(), emitDefineCFAWithFP(), llvm::AArch64FrameLowering::emitEpilogue(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::PPCFrameLowering::inlineStackProbe(), and llvm::AArch64FrameLowering::resetCFIToInitialState().
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inlinestatic |
.cfi_def_cfa_offset modifies a rule for computing CFA.
Register remains the same, but offset is new. Note that it is the absolute offset that will be added to a defined register to the compute CFA address.
Definition at line 555 of file MCDwarf.h.
Referenced by llvm::ARMFrameLowering::adjustForSegmentedStacks(), buildCFAOffs(), llvm::AArch64InstrInfo::buildOutlinedFrame(), convertCalleeSaveRestoreToSPPrePostIncDec(), llvm::createDefCFA(), llvm::MCStreamer::emitCFIDefCfaOffset(), EmitDefCfaOffset(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::AArch64FrameLowering::emitPrologue(), llvm::ARCFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::CSKYFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::M68kFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::MSP430FrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), and llvm::X86FrameLowering::emitPrologue().
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inlinestatic |
.cfi_adjust_cfa_offset Same as .cfi_def_cfa_offset, but Offset is a relative value that is added/subtracted from the previous offset.
Definition at line 563 of file MCDwarf.h.
Referenced by llvm::MSP430FrameLowering::eliminateCallFramePseudoInstr(), llvm::M68kFrameLowering::eliminateCallFramePseudoInstr(), llvm::X86FrameLowering::eliminateCallFramePseudoInstr(), llvm::MCStreamer::emitCFIAdjustCfaOffset(), and ExpandMOVImmSExti8().
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inlinestatic |
.cfi_def_cfa_register modifies a rule for computing CFA.
From now on Register will be used instead of the old one. Offset remains the same.
Definition at line 547 of file MCDwarf.h.
Referenced by buildDefCFAReg(), createMipsMCAsmInfo(), llvm::MCStreamer::emitCFIDefCfaRegister(), EmitDefCfaRegister(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::CSKYFrameLowering::emitPrologue(), llvm::M68kFrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::MSP430FrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), and llvm::PPCFrameLowering::inlineStackProbe().
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inlinestatic |
.cfi_escape Allows the user to add arbitrary bytes to the unwind info.
Definition at line 646 of file MCDwarf.h.
Referenced by llvm::createCFAOffset(), createDefCFAExpression(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::MCStreamer::emitCFIEscape(), llvm::X86FrameLowering::emitPrologue(), emitSCSPrologue(), and emitShadowCallStackPrologue().
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inlinestatic |
A special wrapper for .cfi_escape that indicates GNU_ARGS_SIZE.
Definition at line 652 of file MCDwarf.h.
Referenced by llvm::M68kFrameLowering::eliminateCallFramePseudoInstr(), llvm::X86FrameLowering::eliminateCallFramePseudoInstr(), and llvm::MCStreamer::emitCFIGnuArgsSize().
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inlinestatic |
.cfi_llvm_def_aspace_cfa defines the rule for computing the CFA to be the result of evaluating the DWARF operation expression DW_OP_constu AS; DW_OP_aspace_bregx R, B
as a location description.
Definition at line 572 of file MCDwarf.h.
References Offset, and OpLLVMDefAspaceCfa.
Referenced by llvm::MCStreamer::emitCFILLVMDefAspaceCfa().
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inlinestatic |
.cfi_negate_ra_state AArch64 negate RA state.
Definition at line 608 of file MCDwarf.h.
Referenced by llvm::AArch64FrameLowering::authenticateLR(), llvm::MCStreamer::emitCFINegateRAState(), llvm::AArch64FrameLowering::resetCFIToInitialState(), and llvm::AArch64FrameLowering::signLR().
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inlinestatic |
.cfi_offset Previous value of Register is saved at offset Offset from CFA.
Definition at line 582 of file MCDwarf.h.
Referenced by llvm::ARMFrameLowering::adjustForSegmentedStacks(), llvm::AArch64InstrInfo::buildOutlinedFrame(), llvm::createCFAOffset(), createM68kMCAsmInfo(), createMSP430MCAsmInfo(), createX86MCAsmInfo(), llvm::MSP430FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMovesFullCFA(), llvm::MCStreamer::emitCFIOffset(), EmitCfiOffset(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::CSKYFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::M68kFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::MSP430FrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), and llvm::X86FrameLowering::emitPrologue().
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inlinestatic |
.cfi_register Previous value of Register1 is saved in register Register2.
Definition at line 597 of file MCDwarf.h.
Referenced by llvm::MCStreamer::emitCFIRegister(), llvm::PPCFrameLowering::emitPrologue(), and llvm::SparcFrameLowering::emitPrologue().
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inlinestatic |
.cfi_rel_offset Previous value of Register is saved at offset Offset from the current CFA register.
This is transformed to .cfi_offset using the known displacement of the CFA register from the CFA.
Definition at line 590 of file MCDwarf.h.
Referenced by llvm::MCStreamer::emitCFIRelOffset().
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inlinestatic |
.cfi_remember_state Save all current rules for all registers.
Definition at line 635 of file MCDwarf.h.
Referenced by llvm::MCStreamer::emitCFIRememberState(), and llvm::CFIFixup::runOnMachineFunction().
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inlinestatic |
.cfi_restore says that the rule for Register is now the same as it was at the beginning of the function, after all initial instructions added by .cfi_startproc were executed.
Definition at line 615 of file MCDwarf.h.
Referenced by llvm::MSP430FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), emitCalleeSavedRestores(), llvm::MCStreamer::emitCFIRestore(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), emitSCSEpilogue(), and emitShadowCallStackEpilogue().
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.cfi_restore_state Restore the previously saved state.
Definition at line 640 of file MCDwarf.h.
Referenced by llvm::MCStreamer::emitCFIRestoreState(), and llvm::CFIFixup::runOnMachineFunction().
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.cfi_same_value Current value of Register is the same as in the previous frame.
I.e., no restoration is needed.
Definition at line 629 of file MCDwarf.h.
Referenced by llvm::ARMFrameLowering::adjustForSegmentedStacks(), llvm::MCStreamer::emitCFISameValue(), and insertCFISameValue().
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.cfi_undefined From now on the previous value of Register can't be restored anymore.
Definition at line 622 of file MCDwarf.h.
Referenced by llvm::MCStreamer::emitCFIUndefined().
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.cfi_window_save SPARC register window is saved.
Definition at line 603 of file MCDwarf.h.
Referenced by llvm::MCStreamer::emitCFIWindowSave(), and llvm::SparcFrameLowering::emitPrologue().
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Definition at line 674 of file MCDwarf.h.
References assert(), Operation, and OpLLVMDefAspaceCfa.
Referenced by llvm::AsmPrinter::emitCFIInstruction(), and printCFI().
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Definition at line 692 of file MCDwarf.h.
Referenced by llvm::AsmPrinter::emitCFIInstruction().
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Definition at line 658 of file MCDwarf.h.
Referenced by printCFI().
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Definition at line 693 of file MCDwarf.h.
Referenced by llvm::AsmPrinter::emitCFIInstruction().
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Definition at line 679 of file MCDwarf.h.
References assert(), Offset, OpAdjustCfaOffset, OpDefCfa, OpDefCfaOffset, Operation, OpGnuArgsSize, OpLLVMDefAspaceCfa, OpOffset, and OpRelOffset.
Referenced by llvm::AsmPrinter::emitCFIInstruction(), and printCFI().
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Definition at line 657 of file MCDwarf.h.
References Operation.
Referenced by llvm::X86FrameLowering::BuildCFI(), llvm::AsmPrinter::emitCFIInstruction(), maybeMoveCFI(), llvm::X86FrameLowering::mergeSPUpdates(), and printCFI().
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inline |
Definition at line 660 of file MCDwarf.h.
References assert(), OpDefCfa, OpDefCfaRegister, Operation, OpLLVMDefAspaceCfa, OpOffset, OpRegister, OpRelOffset, OpRestore, OpSameValue, and OpUndefined.
Referenced by llvm::AsmPrinter::emitCFIInstruction(), and printCFI().
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Definition at line 669 of file MCDwarf.h.
References assert(), Operation, OpRegister, and Register2.
Referenced by llvm::AsmPrinter::emitCFIInstruction(), and printCFI().
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Definition at line 687 of file MCDwarf.h.
References assert(), Operation, and OpEscape.
Referenced by llvm::AsmPrinter::emitCFIInstruction(), and printCFI().
int llvm::MCCFIInstruction::Offset |
Definition at line 510 of file MCDwarf.h.
Referenced by createLLVMDefAspaceCfa(), and getOffset().
unsigned llvm::MCCFIInstruction::Register2 |
Definition at line 511 of file MCDwarf.h.
Referenced by getRegister2().