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llvm-project/llvm/lib/MC
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Bill Schmidt ca4a0c9dbd This patch introduces initial-exec model support for thread-local storage 
on 64-bit PowerPC ELF.

The patch includes code to handle external assembly and MC output with the
integrated assembler.  It intentionally does not support the "old" JIT.

For the initial-exec TLS model, the ABI requires the following to calculate
the address of external thread-local variable x:

 Code sequence            Relocation                  Symbol
  ld 9,x@got@tprel(2)      R_PPC64_GOT_TPREL16_DS      x
  add 9,9,x@tls            R_PPC64_TLS                 x

The register 9 is arbitrary here.  The linker will replace x@got@tprel
with the offset relative to the thread pointer to the generated GOT
entry for symbol x.  It will replace x@tls with the thread-pointer
register (13).

The two test cases verify correct assembly output and relocation output
as just described.

PowerPC-specific selection node variants are added for the two
instructions above:  LD_GOT_TPREL and ADD_TLS.  These are inserted
when an initial-exec global variable is encountered by
PPCTargetLowering::LowerGlobalTLSAddress(), and later lowered to
machine instructions LDgotTPREL and ADD8TLS.  LDgotTPREL is a pseudo
that uses the same LDrs support added for medium code model's LDtocL,
with a different relocation type.

The rest of the processing is straightforward.

llvm-svn: 169281
 		2012-12-04 16:18:08 +00:00
..
MCDisassembler Sort includes for all of the .h files under the 'lib' tree. These were 2012-12-04 07:12:27 +00:00
MCParser Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
CMakeLists.txt Give MCRegisterInfo an implementation file. 2012-07-27 16:25:20 +00:00
ELFObjectWriter.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
MCAsmBackend.cpp MachO: direct-to-object attribute for data-in-code markers. 2012-10-01 22:20:54 +00:00
MCAsmInfo.cpp Fix alignment of .comm and .lcomm on mingw32. 2012-09-07 21:08:01 +00:00
MCAsmInfoCOFF.cpp Fix alignment of .comm and .lcomm on mingw32. 2012-09-07 21:08:01 +00:00
MCAsmInfoDarwin.cpp Fix alignment of .comm and .lcomm on mingw32. 2012-09-07 21:08:01 +00:00
MCAsmStreamer.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCAssembler.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCAtom.cpp MCAtom extending methods need to extend the range of the atom as well. 2011-10-10 18:09:38 +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 Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCDisassembler.cpp
…
MCDwarf.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCELF.cpp Add support for gnu_indirect_function. 2011-12-12 17:34:04 +00:00
MCELF.h Make all static functions become static class methods. Move shared (duplicated) functions to new MCELF class. 2011-02-28 21:45:04 +00:00
MCELFObjectTargetWriter.cpp Initial TOC support for PowerPC64 object creation 2012-10-25 12:27:42 +00:00
MCELFStreamer.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCExpr.cpp This patch introduces initial-exec model support for thread-local storage 2012-12-04 16:18:08 +00:00
MCInst.cpp Release build: guard dump functions with 2012-09-12 05:06:18 +00:00
MCInstPrinter.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCInstrAnalysis.cpp MCInstrAnalysis: Don't crash on instructions with no operands. 2011-09-19 17:56:00 +00:00
MCLabel.cpp Release build: guard dump functions with 2012-09-12 05:06:18 +00:00
MCMachOStreamer.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +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
MCModule.cpp Tidy up. 80 columns. 2011-11-15 16:46:22 +00:00
MCNullStreamer.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCObjectFileInfo.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MCObjectStreamer.cpp Hoist some grossly duplicated code from the COFF/ELF/MachO streamers into MCObjectStreamer. 2012-10-04 13:12:43 +00:00
MCObjectWriter.cpp Move [SU]LEB128 encoding to a utility header. 2012-08-08 23:56:06 +00:00
MCPureStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00
MCRegisterInfo.cpp Add MCRI::getNumSubRegIndices() and start checking SubRegIndex ranges. 2012-09-11 16:34:02 +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 Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCSectionELF.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCSectionMachO.cpp Reapply 127939 since Daniel fixed the breakage. <rdar://problem/9012638> 2011-03-19 02:42:31 +00:00
MCStreamer.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +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
MCTargetAsmLexer.cpp Rename TargetAsmParser to MCTargetAsmParser and TargetAsmLexer to MCTargetAsmLexer; rename createAsmLexer to createMCAsmLexer and createAsmParser to createMCAsmParser. 2011-07-26 00:24:13 +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
MachObjectWriter.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
Makefile
…
SubtargetFeature.cpp Symbol hygiene: Make sure declarations and definitions match, make helper functions static. 2012-10-20 12:53:26 +00:00
WinCOFFObjectWriter.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
WinCOFFStreamer.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00