>value of floating point number represented in hex'.  I changed asm2gas from
>subsituting #: -> #:0x to #: -> #0x

i agree that this works, but gas 2.x should take the same syntax as gas 1.x
looking at gas 2.x with gdb, it would seem crack_operand() is breaking the
instruction at the :, and feeding half the expression into the parser.

probably the notend() detector is a little too agressive.