Luke Cheeseman e503aa9de4 [Dwarf/AArch64] Return address signing B key dwarf support ... - When signing return addresses with -msign-return-address=<scope>{+<key>}, either the A key instructions or the B key instructions can be used. To correctly authenticate the return address, the unwinder/debugger must know which key was used to sign the return address. - When and exception is thrown or a break point reached, it may be necessary to unwind the stack. To accomplish this, the unwinder/debugger must be able to first authenticate an the return address if it has been signed. - To enable this, the augmentation string of CIEs has been extended to allow inclusion of a 'B' character. Functions that are signed using the B key variant of the instructions should have and FDE whose associated CIE has a 'B' in the augmentation string. - One must also be able to preserve these semantics when first stepping from a high level language into assembly and then, as a second step, into an object file. To achieve this, I have introduced a new assembly directive '.cfi_b_key_frame ', that tells the assembler the current frame uses return address signing with the B key. - This ensures that the FDE is associated with a CIE that has 'B' in the augmentation string. Differential Revision: https://reviews.llvm.org/D51798 llvm-svn: 349895		2018-12-21 10:45:08 +00:00
..
MCDisassembler
MCParser	[Dwarf/AArch64] Return address signing B key dwarf support	2018-12-21 10:45:08 +00:00
CMakeLists.txt
ConstantPools.cpp
ELFObjectWriter.cpp	Recommit r348243 - "[llvm-mc] - Do not crash when referencing undefined debug sections."	2018-12-05 10:43:58 +00:00
LLVMBuild.txt
MachObjectWriter.cpp	[macho] save the SDK version stored in module metadata into the version min and	2018-12-14 01:14:10 +00:00
MCAsmBackend.cpp
MCAsmInfo.cpp
MCAsmInfoCOFF.cpp
MCAsmInfoDarwin.cpp
MCAsmInfoELF.cpp
MCAsmInfoWasm.cpp
MCAsmMacro.cpp
MCAsmStreamer.cpp	[Dwarf/AArch64] Return address signing B key dwarf support	2018-12-21 10:45:08 +00:00
MCAssembler.cpp	[macho] save the SDK version stored in module metadata into the version min and	2018-12-14 01:14:10 +00:00
MCCodeEmitter.cpp
MCCodePadder.cpp
MCCodeView.cpp	[codeview] Flush labels before S_DEFRANGE* fragments	2018-12-17 21:49:35 +00:00
MCContext.cpp
MCDwarf.cpp	[Dwarf/AArch64] Return address signing B key dwarf support	2018-12-21 10:45:08 +00:00
MCELFObjectTargetWriter.cpp
MCELFStreamer.cpp
MCExpr.cpp	[WebAssembly] Add support for the event section	2018-11-14 02:46:21 +00:00
MCFragment.cpp	[MC] - Fix build bot.	2018-12-05 11:06:29 +00:00
MCInst.cpp	[ARM][Asm] Debug trace for the processInstruction loop	2018-12-03 10:21:28 +00:00
MCInstPrinter.cpp
MCInstrAnalysis.cpp
MCInstrDesc.cpp	[ARM][MC] Move information about variadic register defs into tablegen	2018-12-03 10:32:42 +00:00
MCLabel.cpp
MCLinkerOptimizationHint.cpp
MCMachObjectTargetWriter.cpp
MCMachOStreamer.cpp	[macho] save the SDK version stored in module metadata into the version min and	2018-12-14 01:14:10 +00:00
MCNullStreamer.cpp
MCObjectFileInfo.cpp	[AArch64] [MinGW] Allow enabling SEH exceptions	2018-12-18 08:32:37 +00:00
MCObjectStreamer.cpp	[codeview] Flush labels before S_DEFRANGE* fragments	2018-12-17 21:49:35 +00:00
MCObjectWriter.cpp
MCRegisterInfo.cpp
MCSchedule.cpp
MCSection.cpp
MCSectionCOFF.cpp
MCSectionELF.cpp
MCSectionMachO.cpp
MCSectionWasm.cpp
MCStreamer.cpp	[Dwarf/AArch64] Return address signing B key dwarf support	2018-12-21 10:45:08 +00:00
MCSubtargetInfo.cpp
MCSymbol.cpp
MCSymbolELF.cpp
MCTargetOptions.cpp
MCValue.cpp
MCWasmObjectTargetWriter.cpp
MCWasmStreamer.cpp
MCWin64EH.cpp	[AArch64] Avoid crashing on .seh directives in assembly	2018-12-18 22:10:17 +00:00
MCWinCOFFStreamer.cpp
MCWinEH.cpp
StringTableBuilder.cpp
SubtargetFeature.cpp
WasmObjectWriter.cpp	[WebAssembly] Remove unused function return types (NFC)	2018-11-20 00:38:10 +00:00
WinCOFFObjectWriter.cpp