Question on power-core.xml, register: r1.

Anmol P. Paralkar
2008-05-09T23:41:12Z

Hello,

Per Appendix F, Sec. F.3 Predefined Target Types, of the GDB User Manual:

code_ptr
data_ptr
Pointers to unspecified code and data. The program counter and any
dedicated return address register may be marked as code pointers; printing
a code pointer converts it into a symbolic address. The stack pointer and
any dedicated address registers may be marked as data pointers.

I note the use of the term: "may"; while power-core.xml marks 'pc' and 'lr'
as type="code_ptr", it does not mark 'r1', the stack-pointer as
type="data_ptr". Is there a specific reason why this is so? It's type="uint32";
marking 'pc' & 'lr' as type="code_ptr" has the advantage of converting their
values into symbollic address, what would happen (and is not) were 'r1' to be
marked type="data_ptr"?

Thanks,
Anmol.