Float registers on Sparc?

[Chitti Raju]

> 
> > How do I get access to the single-precision registers?  What about the
> > quad registers?  I looked through the gdb manual, but didn't find
> > anything obvious.
> 
> I believe that $f0 -- $f31 are the single-precision registers.  I
> don't think GDB has any way to print the double- or quad-precision
> registers.  But I'm not a SPARC expert --- perhaps someone else here
> knows.
> 
'info all-registers' prints all the registers including the floating point
registers. 

sample output from 'info all-registers'

f4             2.8125   (raw 0x40340000)        20
f5             0        (raw 0x00000000)
f6             -NaN(0x7fffff)   (raw 0xffffffff)        -NaN(0xfffffffffffff)
f7             -NaN(0x7fffff)   (raw 0xffffffff)

The first two columns represent the single-precision value in decimal and hex,
and the third column gives double precision value of the pair <fx, fx+1>

look at the function sparc_print_register_hook() in sparc-tdep.c. 
Looks like the call to print the double-precision register is made from here. 
There is support to print the quad-precision register also, but is in comments.