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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2012-11-23 16:59:41 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2012-11-23 16:59:41 +0000 |
| commit | 9bb247813aae7cda7b883f1bd0bff2697877dbb1 (patch) | |
| tree | 3b031af5668926a732fd029920ae420f644ef68e /llvm/lib/MC/MCDwarf.cpp | |
| parent | 99e3bfbd17eee1a29b8bfee70b76ff2779632735 (diff) | |
| download | bcm5719-llvm-9bb247813aae7cda7b883f1bd0bff2697877dbb1.tar.gz bcm5719-llvm-9bb247813aae7cda7b883f1bd0bff2697877dbb1.zip | |
Implement .cfi_undefined. Based on a patch from PaX team, updated by
Roman Divacky. I just added the testcase.
llvm-svn: 168520
Diffstat (limited to 'llvm/lib/MC/MCDwarf.cpp')
| -rw-r--r-- | llvm/lib/MC/MCDwarf.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp index bb9ed4952ef..85b47fe4379 100644 --- a/llvm/lib/MC/MCDwarf.cpp +++ b/llvm/lib/MC/MCDwarf.cpp @@ -938,6 +938,16 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer, bool VerboseAsm = Streamer.isVerboseAsm(); switch (Instr.getOperation()) { + case MCCFIInstruction::Undefined: { + unsigned Reg = Instr.getDestination().getReg(); + if (VerboseAsm) { + Streamer.AddComment("DW_CFA_undefined"); + Streamer.AddComment(Twine("Reg ") + Twine(Reg)); + } + Streamer.EmitIntValue(dwarf::DW_CFA_undefined, 1); + Streamer.EmitULEB128IntValue(Reg); + return; + } case MCCFIInstruction::Move: case MCCFIInstruction::RelMove: { const MachineLocation &Dst = Instr.getDestination(); |
