Hello,

By looking at gdb.mi I have noticed that (unfortunately) the way they are 
written, they do not allow baseboard files to override mi_* functions.

gdb.base allows overriding which is great. For example, we override gdb_start 
and gdb_load. In overriden functions we call default_ versions and then we 
perform some additional tasks.

For gdb.mi, that is not possible since mi-support.exp is going to be loaded 
after baseboard file.


I would propose the following changes (only one test from gdb.mi is given as an 
example) and would ask you to, please, comment.

Changes:

1. gdb.exp loads mi-support.exp
2. mi-support.exp to "export" overridable functions. By this I mean to have 
mi_cmd and default_mi_cmd pairs, where mi_cmd calls default_mi_cmd. Baseboard 
can override mi_cmd (well, it can override anything, but this would be meant to 
be overriden).
3. gdb.mi/* do not load explicitly mi-support.exp

Something like the diffs attached (I manually removed some things from my diff 
so the diff may not be patchable, but it should be sufficient to illustrate what 
am I talking about.

Thanks,

Aleksandar Ristovski
QNX Software Systems