[Bug libgcc/85388] config/i386/morestack.S is incompatible with CET

[igor.v.tsimbalist at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85388

--- Comment #2 from igor.v.tsimbalist at intel dot com ---
You are fixing 64bit part. There is similar place for 32bit

         movl    -8(%ebp),%eax           # Restore the last register.

         call    *-12(%ebp)              # Call our caller!

What do we call here? Is it returning back to a function that causes more stack
allocation? Is it possible for the compiler to insert ENDBR there based on some
knowledge of morestack was called?