/// StackProtectorIdx - The frame index for the stack protector.
int StackProtectorIdx;
+ /// FunctionContextIdx - The frame index for the function context. Used for
+ /// SjLj exceptions.
+ int FunctionContextIdx;
+
/// MaxCallFrameSize - This contains the size of the largest call frame if the
/// target uses frame setup/destroy pseudo instructions (as defined in the
/// TargetFrameInfo class). This information is important for frame pointer
AdjustsStack = false;
HasCalls = false;
StackProtectorIdx = -1;
+ FunctionContextIdx = -1;
MaxCallFrameSize = 0;
CSIValid = false;
LocalFrameSize = 0;
int getStackProtectorIndex() const { return StackProtectorIdx; }
void setStackProtectorIndex(int I) { StackProtectorIdx = I; }
+ /// getFunctionContextIndex/setFunctionContextIndex - Return the index for the
+ /// function context object. This object is used for SjLj exceptions.
+ int getFunctionContextIndex() const { return FunctionContextIdx; }
+ void setFunctionContextIndex(int I) { FunctionContextIdx = I; }
+
/// isFrameAddressTaken - This method may be called any time after instruction
/// selection is complete to determine if there is a call to
/// \@llvm.frameaddress in this function.
def int_eh_dwarf_cfa : Intrinsic<[llvm_ptr_ty], [llvm_i32_ty]>;
let Properties = [IntrNoMem] in {
- def int_eh_sjlj_lsda : Intrinsic<[llvm_ptr_ty]>;
- def int_eh_sjlj_callsite: Intrinsic<[], [llvm_i32_ty]>;
+ def int_eh_sjlj_lsda : Intrinsic<[llvm_ptr_ty]>;
+ def int_eh_sjlj_callsite : Intrinsic<[], [llvm_i32_ty]>;
+ def int_eh_sjlj_functioncontext : Intrinsic<[], [llvm_ptr_ty]>;
}
def int_eh_sjlj_dispatch_setup : Intrinsic<[], [llvm_i32_ty]>;
-def int_eh_sjlj_setjmp : Intrinsic<[llvm_i32_ty], [llvm_ptr_ty]>;
-def int_eh_sjlj_longjmp : Intrinsic<[], [llvm_ptr_ty]>;
+def int_eh_sjlj_setjmp : Intrinsic<[llvm_i32_ty], [llvm_ptr_ty]>;
+def int_eh_sjlj_longjmp : Intrinsic<[], [llvm_ptr_ty]>;
//===---------------- Generic Variable Attribute Intrinsics----------------===//
//
MMI.setCurrentCallSite(CI->getZExtValue());
return 0;
}
+ case Intrinsic::eh_sjlj_functioncontext: {
+ // Get and store the index of the function context.
+ MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
+ AllocaInst *FnCtx = cast<AllocaInst>(I.getArgOperand(0));
+ int FI = FuncInfo.StaticAllocaMap[FnCtx];
+ MFI->setFunctionContextIndex(FI);
+ return 0;
+ }
case Intrinsic::eh_sjlj_setjmp: {
setValue(&I, DAG.getNode(ISD::EH_SJLJ_SETJMP, dl, MVT::i32, getRoot(),
getValue(I.getArgOperand(0))));
AllocaInst *FuncCtx =
new AllocaInst(FunctionContextTy, 0, Align, "fn_context", EntryBB->begin());
+ // Store a pointer to the function context so that the back-end will know
+ // where to look for it.
+ CallInst::Create(Intrinsic::getDeclaration(F.getParent(),
+ Intrinsic::eh_sjlj_functioncontext),
+ FuncCtx, "", EntryBB->getTerminator());
+
// Fill in the function context structure.
Value *Idxs[2];
Type *Int32Ty = Type::getInt32Ty(F.getContext());