diff options
author | Charles Davis <cdavis@mines.edu> | 2011-05-18 20:54:10 +0000 |
---|---|---|
committer | Charles Davis <cdavis@mines.edu> | 2011-05-18 20:54:10 +0000 |
commit | f07090134d06e0cf3508e8b8e87d775f0a7982c1 (patch) | |
tree | d57ca47ae68a3366d3642e5c2df9c14e9434e709 /lib/MC/MCAsmStreamer.cpp | |
parent | b55d924b1e33341d08b1bead78e86fce56617784 (diff) |
Add some more Win64 EH directives:
- StartChained and EndChained delimit a chained unwind area, which can contain
additional operations to be undone if an exception occurs inside of it.
- UnwindOnly declares that this function doesn't handle any exceptions. If it
has a handler, it's an unwind handler instead of an exception handler.
- Lsda declares the location and size of the LSDA, which in the Win64 EH
scheme is kept inside the UNWIND_INFO struct. Windows itself ignores the
LSDA; it's used by the Language-Specific Handler (the "Personality Function"
from DWARF).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131572 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC/MCAsmStreamer.cpp')
-rw-r--r-- | lib/MC/MCAsmStreamer.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp index 41a821dbb9..f62111bcf8 100644 --- a/lib/MC/MCAsmStreamer.cpp +++ b/lib/MC/MCAsmStreamer.cpp @@ -210,6 +210,10 @@ public: virtual void EmitWin64EHStartProc(MCSymbol *Symbol, MCSymbol *EHandler = 0); virtual void EmitWin64EHEndProc(); + virtual void EmitWin64EHStartChained(); + virtual void EmitWin64EHEndChained(); + virtual void EmitWin64EHUnwindOnly(); + virtual void EmitWin64EHLsda(cosnt MCSymbol *Sym, int64_t Size); virtual void EmitWin64EHPushReg(int64_t Register); virtual void EmitWin64EHSetFrame(int64_t Register, int64_t Offset); virtual void EmitWin64EHAllocStack(int64_t Size); @@ -942,6 +946,38 @@ void MCAsmStreamer::EmitWin64EHEndProc() EmitEOL(); } +void MCAsmStreamer::EmitWin64EHStartChained() +{ + //MCStreamer::EmitWin64EHStartChained(); + + OS << "\t.w64_startchained"; + EmitEOL(); +} + +void MCAsmStreamer::EmitWin64EHEndChained() +{ + //MCStreamer::EmitWin64EHEndChained(); + + OS << "\t.w64_endchained"; + EmitEOL(); +} + +void MCAsmStreamer::EmitWin64EHUnwindOnly() +{ + //MCStreamer::EmitWin64EHUnwindOnly(); + + OS << "\t.w64_unwind_only"; + EmitEOL(); +} + +void MCAsmStreamer::EmitWin64EHLsda(cosnt MCSymbol *Sym, int64_t Size) +{ + //MCStreamer::EmitWin64EHLsda(Sym, Size); + + OS << "\t.w64_lsda " << *Sym << ", " << Size; + EmitEOL(); +} + void MCAsmStreamer::EmitWin64EHPushReg(int64_t Register) { //MCStreamer::EmitWin64EHPushReg(Register); |