- static unsigned getFramePointerSaveOffset(bool isPPC64, bool isDarwinABI) {
- // For the Darwin ABI:
- // We cannot use the TOC save slot (offset +20) in the PowerPC linkage area
- // for saving the frame pointer (if needed.) While the published ABI has
- // not used this slot since at least MacOSX 10.2, there is older code
- // around that does use it, and that needs to continue to work.
- if (isDarwinABI)
- return isPPC64 ? -8U : -4U;
-
- // SVR4 ABI: First slot in the general register save area.
- return isPPC64 ? -8U : -4U;
- }