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Win64 SEH: Emit the constant 1 for catch-all into xdata

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226767 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner 2015-01-22 02:27:44 +00:00
parent e84c7b1116
commit 0d056fd4c3
2 changed files with 31 additions and 2 deletions
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4
lib/CodeGen/AsmPrinter/Win64Exception.cpp
View File

@ -145,7 +145,7 @@ const MCSymbolRefExpr *Win64Exception::createImageRel32(const MCSymbol *Value) {
/// struct Entry {
/// imagerel32 LabelStart;
/// imagerel32 LabelEnd;
/// imagerel32 FilterOrFinally; // Zero means catch-all.
/// imagerel32 FilterOrFinally; // One means catch-all.
/// imagerel32 LabelLPad; // Zero means __finally.
/// } Entries[NumEntries];
/// };
@ -241,7 +241,7 @@ void Win64Exception::emitCSpecificHandlerTable() {
if (TI) // Emit the filter function pointer.
Asm->OutStreamer.EmitValue(createImageRel32(Asm->getSymbol(TI)), 4);
else // Otherwise, this is a "catch i8* null", or catch all.
Asm->OutStreamer.EmitIntValue(0, 4);
Asm->OutStreamer.EmitIntValue(1, 4);
}
Asm->OutStreamer.EmitValue(createImageRel32(ClauseLabel), 4);
}

29
test/CodeGen/X86/seh-catch-all.ll Normal file
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@ -0,0 +1,29 @@
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s
@str = internal unnamed_addr constant [10 x i8] c"recovered\00", align 1
declare i32 @__C_specific_handler(...)
declare void @crash()
declare i32 @puts(i8*)
define i32 @main() {
entry:
invoke void @crash()
to label %__try.cont unwind label %lpad
lpad:
%0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
catch i8* null
call i32 @puts(i8* getelementptr inbounds ([10 x i8]* @str, i64 0, i64 0))
br label %__try.cont
__try.cont:
ret i32 0
eh.resume:
resume { i8*, i32 } %0
}
; CHECK-LABEL: main:
; CHECK: .seh_handlerdata
; CHECK: .long