Function *F;
Module *M;
- DominatorTree* DT;
+ DominatorTree *DT;
/// InsertStackProtectors - Insert code into the prologue and epilogue of
/// the function.
}
StackProtector(const TargetLowering *tli)
: FunctionPass(ID), TLI(tli) {
- initializeStackProtectorPass(*PassRegistry::getPassRegistry());
- }
+ initializeStackProtectorPass(*PassRegistry::getPassRegistry());
+ }
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addPreserved<DominatorTree>();
DT = getAnalysisIfAvailable<DominatorTree>();
if (!RequiresStackProtector()) return false;
-
+
return InsertStackProtectors();
}
// StackGuardSlot = alloca i8*
// StackGuard = load __stack_chk_guard
// call void @llvm.stackprotect.create(StackGuard, StackGuardSlot)
- //
+ //
PointerType *PtrTy = Type::getInt8PtrTy(RI->getContext());
unsigned AddressSpace, Offset;
if (TLI->getStackCookieLocation(AddressSpace, Offset)) {
Constant *OffsetVal =
ConstantInt::get(Type::getInt32Ty(RI->getContext()), Offset);
-
+
StackGuardVar = ConstantExpr::getIntToPtr(OffsetVal,
PointerType::get(PtrTy, AddressSpace));
} else {
- StackGuardVar = M->getOrInsertGlobal("__stack_chk_guard", PtrTy);
+ StackGuardVar = M->getOrInsertGlobal("__stack_chk_guard", PtrTy);
}
BasicBlock &Entry = F->getEntryBlock();