Kevin Enderby 8c9aa922a9 This adds a Darwin x86_64 relocation encoding for a subtraction expression ... where both symbols are "local", that is non-external symbols, and there is no "base" for the symbols used in the expression, that is the section has no non-temporary symbols. This case looks like this: % cat local_reloc_A-B.s .long 0 LB: .long 1 .long LA - LB - 4 .long 2 LA: .long 3 which llvm-mc will not encode without this patch, generates a "unsupported local relocations in difference" error, but the Darwin assembler will encode with relocation entries like this: % otool -rv a.out l.out a.out: Relocation information (__TEXT,__text) 2 entries address pcrel length extern type scattered symbolnum/value 00000008 False long False SUB False 1 (__TEXT,__text) 00000008 False long False UNSIGND False 1 (__TEXT,__text) which is very similar to what is encoded when the symbols don't have the leading 'L' and they are not temporary symbols. Which llvm-mc and the Darwin assembler will encoded like this: Relocation information (__TEXT,__text) 2 entries address pcrel length extern type scattered symbolnum/value 00000008 False long True SUB False B 00000008 False long True UNSIGND False A This is the missing relocation encoding needed to allow the Mach-O x86 Dwarf file and line table to be emitted. So this patch also removes the TODO from the if() statement in MCMachOStreamer::Finish() that didn't call MCDwarfFileTable::Emit() for 64-bit targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115389 91177308-0d34-0410-b5e6-96231b3b80d8		2010-10-02 00:13:41 +00:00
..
MCDisassembler
MCParser	This is the last major patch to implement support for the .loc directive	2010-09-30 16:52:03 +00:00
CMakeLists.txt
ELFObjectWriter.cpp	Factor some logic into ShouldRelocOnSymbol. This simplifies the code and	2010-09-30 20:18:35 +00:00
MachObjectWriter.cpp	This adds a Darwin x86_64 relocation encoding for a subtraction expression	2010-10-02 00:13:41 +00:00
Makefile
MCAsmInfo.cpp
MCAsmInfoCOFF.cpp
MCAsmInfoDarwin.cpp
MCAsmStreamer.cpp	Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile()	2010-09-30 02:45:56 +00:00
MCAssembler.cpp	This is the last major patch to implement support for the .loc directive	2010-09-30 16:52:03 +00:00
MCCodeEmitter.cpp
MCContext.cpp	Move logic of determining ELF entsize from the .s printer to initialization	2010-09-30 05:59:22 +00:00
MCDisassembler.cpp
MCDwarf.cpp	This is the last major patch to implement support for the .loc directive	2010-09-30 16:52:03 +00:00
MCELFStreamer.cpp	Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile()	2010-09-30 02:45:56 +00:00
MCExpr.cpp	Changes EvaluateAsAbsolute() to return the "current value" of the expression	2010-09-30 16:42:21 +00:00
MCInst.cpp
MCInstPrinter.cpp
MCLabel.cpp
MCLoggingStreamer.cpp
MCMachOStreamer.cpp	This adds a Darwin x86_64 relocation encoding for a subtraction expression	2010-10-02 00:13:41 +00:00
MCNullStreamer.cpp
MCObjectStreamer.cpp
MCObjectWriter.cpp	This is the last major patch to implement support for the .loc directive	2010-09-30 16:52:03 +00:00
MCSection.cpp
MCSectionCOFF.cpp
MCSectionELF.cpp	Move logic of determining ELF entsize from the .s printer to initialization	2010-09-30 05:59:22 +00:00
MCSectionMachO.cpp
MCStreamer.cpp	This is the last major patch to implement support for the .loc directive	2010-09-30 16:52:03 +00:00
MCSymbol.cpp
MCValue.cpp
TargetAsmBackend.cpp
WinCOFFObjectWriter.cpp	Correctly produce R_X86_64_32 or R_X86_64_32S.	2010-09-30 03:11:42 +00:00
WinCOFFStreamer.cpp