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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 | c8fec7e21f5c24303eab8a8592f3b8faff347d86 (patch) | |
| tree | 5c9f44272f1e6deecb8b325ab238d5acbbc8f0d4 /lib/MC/MCDwarf.cpp | |
| parent | 834518f1cea15796a377afb31844638e3c483e78 (diff) | |
Implement .cfi_undefined. Based on a patch from PaX team, updated by
Roman Divacky. I just added the testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168520 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC/MCDwarf.cpp')
| -rw-r--r-- | lib/MC/MCDwarf.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp index bb9ed4952e..85b47fe437 100644 --- a/lib/MC/MCDwarf.cpp +++ b/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(); |