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Implement emission of all Win64 exception tables. Make the COFF streamer emit

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these tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131833 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Charles Davis 2011-05-22 04:15:07 +00:00
parent 3185f5c353
commit 38ea9eecd7
4 changed files with 33 additions and 1 deletions
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9
include/llvm/MC/MCStreamer.h
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@ -81,6 +81,7 @@ namespace llvm {
void EmitFrames(bool usingCFI);
MCWin64EHUnwindInfo *getCurrentW64UnwindInfo(){return CurrentW64UnwindInfo;}
void EmitW64Tables();
public:
virtual ~MCStreamer();
@ -95,6 +96,14 @@ namespace llvm {
return FrameInfos[i];
}
unsigned getNumW64UnwindInfos() {
return W64UnwindInfos.size();
}
MCWin64EHUnwindInfo &getW64UnwindInfo(unsigned i) {
return W64UnwindInfos[i];
}
/// @name Assembly File Formatting.
/// @{

7
lib/MC/MCStreamer.cpp
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@ -506,3 +506,10 @@ void MCStreamer::EmitFrames(bool usingCFI) {
if (EmitDebugFrame)
MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
}
void MCStreamer::EmitW64Tables() {
if (!getNumW64UnwindInfos())
return;
MCWin64EHUnwindEmitter::Emit(*this);
}

17
lib/MC/MCWin64EH.cpp
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@ -110,7 +110,7 @@ static void EmitUnwindCode(MCStreamer &streamer, MCWin64EHInstruction &inst) {
}
static void EmitRuntimeFunction(MCStreamer &streamer,
MCWin64EHUnwindInfo *info) {
const MCWin64EHUnwindInfo *info) {
MCContext &context = streamer.getContext();
streamer.EmitValue(MCSymbolRefExpr::Create(info->Begin, context), 4);
@ -185,5 +185,20 @@ void MCWin64EHUnwindEmitter::EmitUnwindInfo(MCStreamer &streamer,
llvm::EmitUnwindInfo(streamer, info);
}
void MCWin64EHUnwindEmitter::Emit(MCStreamer &streamer) {
MCContext &context = streamer.getContext();
// Emit the unwind info structs first.
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
const MCSection *xdataSect = asmInfo.getWin64EHTableSection();
streamer.SwitchSection(xdataSect);
for (unsigned i = 0; i < streamer.getNumW64UnwindInfos(); ++i)
llvm::EmitUnwindInfo(streamer, &streamer.getW64UnwindInfo(i));
// Now emit RUNTIME_FUNCTION entries.
const MCSection *pdataSect = asmInfo.getWin64EHFuncTableSection();
streamer.SwitchSection(pdataSect);
for (unsigned i = 0; i < streamer.getNumW64UnwindInfos(); ++i)
EmitRuntimeFunction(streamer, &streamer.getW64UnwindInfo(i));
}
} // End of namespace llvm

1
lib/MC/WinCOFFStreamer.cpp
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@ -388,6 +388,7 @@ void WinCOFFStreamer::EmitWin64EHHandlerData() {
}
void WinCOFFStreamer::Finish() {
EmitW64Tables();
MCObjectStreamer::Finish();
}