From 114baee1fa017daefad2339c77b45b9ca3d79a41 Mon Sep 17 00:00:00 2001 From: Bill Wendling Date: Wed, 23 Jan 2013 06:41:41 +0000 Subject: Add the IR attribute 'sspstrong'. SSPStrong applies a heuristic to insert stack protectors in these situations: * A Protector is required for functions which contain an array, regardless of type or length. * A Protector is required for functions which contain a structure/union which contains an array, regardless of type or length. Note, there is no limit to the depth of nesting. * A protector is required when the address of a local variable (i.e., stack based variable) is exposed. (E.g., such as through a local whose address is taken as part of the RHS of an assignment or a local whose address is taken as part of a function argument.) This patch implements the SSPString attribute to be equivalent to SSPRequired. This will change in a subsequent patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173230 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/StackProtector.cpp | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'lib/CodeGen/StackProtector.cpp') diff --git a/lib/CodeGen/StackProtector.cpp b/lib/CodeGen/StackProtector.cpp index e242804417..049efc1c86 100644 --- a/lib/CodeGen/StackProtector.cpp +++ b/lib/CodeGen/StackProtector.cpp @@ -141,6 +141,12 @@ bool StackProtector::RequiresStackProtector() const { Attribute::StackProtectReq)) return true; + // FIXME: Dummy SSP-strong implementation. Default to required until + // strong heuristic is implemented. + if (F->getAttributes().hasAttribute(AttributeSet::FunctionIndex, + Attribute::StackProtectStrong)) + return true; + if (!F->getAttributes().hasAttribute(AttributeSet::FunctionIndex, Attribute::StackProtect)) return false; -- cgit v1.2.3-18-g5258