FP aliases

["Svein E. Seldal" <Svein.Seldal@solidas.com>]

Hi,

 From the docs in gdb/std-regs.c:75, value_of_builtin_frame_fp_reg() it 
states that it will automagically use any registers named "fp" as fp 
(instead of using the deprecated fp functions). So what I read is that I 
need to reply "fp" in one of the registers in the 
set_gdbarch_register_name() function, right?

For my arch, the tic4x, there is no hardware registers named "fp". Is it 
wise to replace my "ar3" with "fp". Users will probably get confused 
when they are introduced to the "fp" register, as they do not know the 
physical relation. But it states that I can create an alias. How? And 
why is that dangerous?

I also observere that for the d10v target, no register is named "fp", 
but still they manage to do without the the deprecated fp functions. How 
is that?


Regards,
Svein