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Static relocation model Thumb jump table interworking.

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Make sure the low bit of the PC is set when loading an address directly
for jump tables in static relocation model.

llvm-svn: 138912
This commit is contained in:
Jim Grosbach 2011-08-31 22:23:09 +00:00
parent dd71d9efb9
commit 1af1d2dfda
1 changed files with 5 additions and 0 deletions
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5
lib/Target/ARM/ARMAsmPrinter.cpp
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@ -923,6 +923,11 @@ void ARMAsmPrinter::EmitJumpTable(const MachineInstr *MI) {
Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(JTISymbol, Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(JTISymbol,
OutContext), OutContext),
OutContext); OutContext);
// If we're generating a table of Thumb addresses in static relocation
// model, we need to add one to keep interworking correctly.
else if (AFI->isThumbFunction())
Expr = MCBinaryExpr::CreateAdd(Expr, MCConstantExpr::Create(1,OutContext),
OutContext);
OutStreamer.EmitValue(Expr, 4); OutStreamer.EmitValue(Expr, 4);
} }
} }