On which platforms does libc store stack cookie values somewhere other than __stack_chk_guard?

Question

e.g glibc on Linux/i386 stores the cookie at %gs:0x14. Are there any other platforms on which I need to look somewhere other than at the __stack_chk_guard symbol to find the cookie?

(This is where the value that gcc -fstack-protector-generated code stores onto the stack in function prologues and checks before return to defend against stack smashing).