Hello,

The attached does to scalars (integers, floats and enums) what 
structs.exp did to structures - checks that GDB can pass, return and 
finish all (well almost) possible variants.

It's named "call-*" so that it pairs up with the other function call 
code.  I'm thinking that "structs.exp" might deserve a similar rename 
(or if someone has a better suggested grouping).

Joel, Jerome, AIX should have zero call-sc and structs failures (as 
there is for PPC/elf).

committed,
Andrew