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llvm-6502/lib/MC
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Ulrich Weigand c1f4a4b264 [MC/DWARF] Support .debug_frame / .debug_line code alignment factors 
I've been comparing the object file output of LLVM's integrated
assembler against the external assembler on PowerPC, and one
area where differences still remain are in DWARF sections.

In particular, the GNU assembler generates .debug_frame and
.debug_line sections using a code alignment factor of 4, since
all PowerPC instructions have size 4 and must be aligned to a
multiple of 4.  However, current MC code hard-codes a code
alignment factor of 1.

This patch changes this by adding a "minimum instruction alignment"
data element to MCAsmInfo and using this as code alignment factor.

This requires passing a MCContext into MCDwarfLineAddr::Encode
and MCDwarfLineAddr::EncodeAdvanceLoc.  Note that one caller,
MCDwarfLineAddr::Write, didn't actually have that information
available.  However, it turns out that this routine is in fact
never used in the whole code base, so the patch simply removes
it.  If it turns out to be needed again at a later time, it
could be re-added with an updated interface.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183834 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-12 14:46:54 +00:00
..
MCDisassembler Follow up of the introduction of MCSymbolizer. 2013-05-24 22:51:52 +00:00
MCParser Fix two typo 2013-05-14 23:36:24 +00:00
CMakeLists.txt MC: Disassembled CFG reconstruction. 2013-05-24 01:07:04 +00:00
ELFObjectWriter.cpp Remove MCELFObjectTargetWriter::adjustFixupOffset hack 2013-05-15 15:07:42 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
MachObjectWriter.cpp [MC/Mach-O] Load commands are supposed to 8-byte aligned on 64-bit. 2013-01-22 03:42:49 +00:00
Makefile
MCAsmBackend.cpp MachO: direct-to-object attribute for data-in-code markers. 2012-10-01 22:20:54 +00:00
MCAsmInfo.cpp [MC/DWARF] Support .debug_frame / .debug_line code alignment factors 2013-06-12 14:46:54 +00:00
MCAsmInfoCOFF.cpp Remove unused DwarfSectionOffsetDirective string 2013-04-22 22:49:11 +00:00
MCAsmInfoDarwin.cpp Fix alignment of .comm and .lcomm on mingw32. 2012-09-07 21:08:01 +00:00
MCAsmStreamer.cpp Move PathV2.h to Path.h 2013-06-11 22:21:28 +00:00
MCAssembler.cpp [MC/DWARF] Support .debug_frame / .debug_line code alignment factors 2013-06-12 14:46:54 +00:00
MCAtom.cpp MC: Disassembled CFG reconstruction. 2013-05-24 01:07:04 +00:00
MCCodeEmitter.cpp MC: Move target specific fixup info descriptors to TargetAsmBackend instead of 2010-12-16 03:20:06 +00:00
MCCodeGenInfo.cpp Sink codegen optimization level into MCCodeGenInfo along side relocation model 2011-11-16 08:38:26 +00:00
MCContext.cpp Debug Info: use SmallVector instead of std::vector in MCDwarfDirsCUMap and MCDwarfFilesCUMap 2013-03-12 20:17:00 +00:00
MCDisassembler.cpp Follow up of the introduction of MCSymbolizer. 2013-05-24 22:51:52 +00:00
MCDwarf.cpp [MC/DWARF] Support .debug_frame / .debug_line code alignment factors 2013-06-12 14:46:54 +00:00
MCELF.cpp ELF symbol table field st_other support, 2013-02-19 21:57:35 +00:00
MCELFObjectTargetWriter.cpp Cleanup relocation sorting for ELF. 2013-05-15 18:22:01 +00:00
MCELFStreamer.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCExpr.cpp [PowerPC] Clean up generation of ha16() / lo16() markers 2013-05-23 22:26:41 +00:00
MCExternalSymbolizer.cpp Follow up of the introduction of MCSymbolizer. 2013-05-24 22:51:52 +00:00
MCFunction.cpp MC: Disassembled CFG reconstruction. 2013-05-24 01:07:04 +00:00
MCInst.cpp Release build: guard dump functions with 2012-09-12 05:06:18 +00:00
MCInstPrinter.cpp Try to unbreak the build on hosts that don't transitively pull in a definition for int64_t. 2012-12-05 18:31:11 +00:00
MCInstrAnalysis.cpp MC: Disassembled CFG reconstruction. 2013-05-24 01:07:04 +00:00
MCLabel.cpp Release build: guard dump functions with 2012-09-12 05:06:18 +00:00
MCMachObjectTargetWriter.cpp MC/Mach-O: On second thought, use a custom hook for enabling aggressive 2010-12-17 05:50:29 +00:00
MCMachOStreamer.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCModule.cpp Fix unused warning in opt builds. 2013-05-24 06:26:18 +00:00
MCNullStreamer.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCObjectDisassembler.cpp MC: Disassembled CFG reconstruction. 2013-05-24 01:07:04 +00:00
MCObjectFileInfo.cpp [SystemZ] Update non-pic DWARF encodings 2013-05-06 17:28:30 +00:00
MCObjectStreamer.cpp Add support for DWARF line number table entries for values in the instruction 2013-05-25 21:56:53 +00:00
MCObjectSymbolizer.cpp Remove debug print added in r182949. 2013-05-30 23:46:47 +00:00
MCObjectWriter.cpp Move [SU]LEB128 encoding to a utility header. 2012-08-08 23:56:06 +00:00
MCPureStreamer.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCRegisterInfo.cpp Make SubRegIndex size mandatory, following r183020. 2013-05-31 23:45:26 +00:00
MCRelocationInfo.cpp Follow up of the introduction of MCSymbolizer. 2013-05-24 22:51:52 +00:00
MCSection.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCSectionCOFF.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCSectionELF.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCSectionMachO.cpp Add support for subsections to the ELF assembler. Fixes PR8717. 2013-04-17 21:18:16 +00:00
MCStreamer.cpp MCStreamer: Also clear vector of W64UnwindInfos on reset(). 2013-05-07 21:14:15 +00:00
MCSubtargetInfo.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCSymbol.cpp Fix Doxygen issues: 2012-09-14 14:57:36 +00:00
MCSymbolizer.cpp Add MCSymbolizer for symbolic/annotated disassembly. 2013-05-24 00:39:57 +00:00
MCValue.cpp Release build: guard dump functions with 2012-09-12 05:06:18 +00:00
MCWin64EH.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
SubtargetFeature.cpp Symbol hygiene: Make sure declarations and definitions match, make helper functions static. 2012-10-20 12:53:26 +00:00
WinCOFFObjectWriter.cpp COFF: Fix weak external aliases. 2013-04-22 18:48:56 +00:00
WinCOFFStreamer.cpp Give the MCStreamer class hierarchy LLVM RTTI facilities for use with 2013-01-31 23:29:57 +00:00