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Re: [RFC] printing/setting flag register fields
On Sun, Sep 20, 2009 at 11:35:31AM -0700, Doug Evans wrote:
> Should TYPE_CODE_FLAGS be nuked? I'm happy to do that instead if
> that's what folks want. I like it, but if we made eflags a union of a
> struct and an int, then "set $eflags.ZF = 0" won't work. Are folks
> happy with "set $eflags.bits.ZF = 0"? "works for me".
IMO what we really want is the struct - but with a way to say "print
the whole word-sized struct as a single integer". This is something I
need often. I'd like to see "$eflags is 0x12f, which is the A B and C
bits", without GDB syntax getting in my way.
Yes, that's vague :-)
> But it could be done differently. An off-the-cuff example is an
> option to ptype to print field offsets for structs in general. [I'm
> assuming such a facility doesn't already exist.] That would probably
> be more useful than always printing the offsets anyway.
I think such an option was submitted, once upon a time. I don't know
what became of it. I agree this would be more useful.
--
Daniel Jacobowitz
CodeSourcery