================
@@ -461,6 +463,139 @@ bool PreISelIntrinsicLowering::expandMemIntrinsicUses(
return Changed;
}
+static bool expandProtectedFieldPtr(Function &Intr) {
+ Module &M = *Intr.getParent();
+
+ SmallPtrSet<GlobalValue *, 2> DSsToDeactivate;
+
+ Type *Int8Ty = Type::getInt8Ty(M.getContext());
+ Type *Int64Ty = Type::getInt64Ty(M.getContext());
+ PointerType *PtrTy = PointerType::get(M.getContext(), 0);
+
+ Function *SignIntr =
+ Intrinsic::getOrInsertDeclaration(&M, Intrinsic::ptrauth_sign, {});
+ Function *AuthIntr =
+ Intrinsic::getOrInsertDeclaration(&M, Intrinsic::ptrauth_auth, {});
+
+ auto *EmuFnTy = FunctionType::get(Int64Ty, {Int64Ty, Int64Ty}, false);
+ FunctionCallee EmuSignIntr = M.getOrInsertFunction("__emupac_pacda",
EmuFnTy);
+ FunctionCallee EmuAuthIntr = M.getOrInsertFunction("__emupac_autda",
EmuFnTy);
+
+ auto CreateSign = [&](IRBuilder<> &B, Value *Val, Value *Disc,
+ OperandBundleDef DSBundle) {
+ Function *F = B.GetInsertBlock()->getParent();
+ Attribute FSAttr = F->getFnAttribute("target-features");
+ if (FSAttr.isValid() && FSAttr.getValueAsString().contains("+pauth"))
+ return B.CreateCall(SignIntr, {Val, B.getInt32(2), Disc}, DSBundle);
+ return B.CreateCall(EmuSignIntr, {Val, Disc}, DSBundle);
+ };
+
+ auto CreateAuth = [&](IRBuilder<> &B, Value *Val, Value *Disc,
+ OperandBundleDef DSBundle) {
+ Function *F = B.GetInsertBlock()->getParent();
+ Attribute FSAttr = F->getFnAttribute("target-features");
+ if (FSAttr.isValid() && FSAttr.getValueAsString().contains("+pauth"))
+ return B.CreateCall(AuthIntr, {Val, B.getInt32(2), Disc}, DSBundle);
+ return B.CreateCall(EmuAuthIntr, {Val, Disc}, DSBundle);
+ };
+
+ auto GetDeactivationSymbol = [&](CallInst *Call) -> GlobalValue * {
+ if (auto Bundle =
+ Call->getOperandBundle(LLVMContext::OB_deactivation_symbol))
+ return cast<GlobalValue>(Bundle->Inputs[0]);
+ return nullptr;
+ };
+
+ for (User *U : llvm::make_early_inc_range(Intr.users())) {
+ auto *Call = cast<CallInst>(U);
+
+ auto *Pointer = Call->getArgOperand(0);
+ auto *Disc = Call->getArgOperand(1);
+ bool UseHWEncoding =
+ cast<ConstantInt>(Call->getArgOperand(2))->getZExtValue();
+ assert(UseHWEncoding && "software encoding currently unsupported");
----------------
pcc wrote:
Done
https://github.com/llvm/llvm-project/pull/151647
_______________________________________________
llvm-branch-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
