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| author | Bill Wendling <isanbard@gmail.com> | 2013-01-23 06:41:41 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2013-01-23 06:41:41 +0000 |
| commit | 114baee1fa017daefad2339c77b45b9ca3d79a41 (patch) | |
| tree | a8a1320a7ad94ac750fcca331a8db207f2fea637 /include | |
| parent | 28d65722d6f283b327b5815914382077fe9c0ab4 (diff) | |
| download | external_llvm-114baee1fa017daefad2339c77b45b9ca3d79a41.zip external_llvm-114baee1fa017daefad2339c77b45b9ca3d79a41.tar.gz external_llvm-114baee1fa017daefad2339c77b45b9ca3d79a41.tar.bz2 | |
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
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm-c/Core.h | 5 | ||||
| -rw-r--r-- | include/llvm/IR/Attributes.h | 2 |
2 files changed, 5 insertions, 2 deletions
diff --git a/include/llvm-c/Core.h b/include/llvm-c/Core.h index f2fe764..5b7422f 100644 --- a/include/llvm-c/Core.h +++ b/include/llvm-c/Core.h @@ -173,10 +173,11 @@ typedef enum { LLVMUWTable = 1 << 30, LLVMNonLazyBind = 1 << 31 - /* FIXME: This attribute is currently not included in the C API as + /* FIXME: These attributes are currently not included in the C API as a temporary measure until the API/ABI impact to the C API is understood and the path forward agreed upon. - LLVMAddressSafety = 1ULL << 32 + LLVMAddressSafety = 1ULL << 32, + LLVMStackProtectStrongAttribute = 1ULL<<33 */ } LLVMAttribute; diff --git a/include/llvm/IR/Attributes.h b/include/llvm/IR/Attributes.h index de214d1..813718f 100644 --- a/include/llvm/IR/Attributes.h +++ b/include/llvm/IR/Attributes.h @@ -90,6 +90,7 @@ public: ///< alignstack=(1)) StackProtect, ///< Stack protection. StackProtectReq, ///< Stack protection required. + StackProtectStrong, ///< Strong Stack protection. StructRet, ///< Hidden pointer to structure to return UWTable, ///< Function must be in a unwind table ZExt, ///< Zero extended before/after call @@ -463,6 +464,7 @@ public: .removeAttribute(Attribute::OptimizeForSize) .removeAttribute(Attribute::StackProtect) .removeAttribute(Attribute::StackProtectReq) + .removeAttribute(Attribute::StackProtectStrong) .removeAttribute(Attribute::NoRedZone) .removeAttribute(Attribute::NoImplicitFloat) .removeAttribute(Attribute::Naked) |