This is the mail archive of the
binutils@sources.redhat.com
mailing list for the binutils project.
Re: "Error: constant too large" on mips gas
On Tue, 12 Apr 2005, Eric Christopher wrote:
> > Well, no code example as I haven't touched it yet, but semantically-wise
> > I think calls to expr() should should be able to specify the width of the
> > ALU word to operate on and whether to treat literals as signed or not.
> > Then any literal will get internally either zero- or sign-extended from
> > the specified width to the width of the internal representation (i.e that
> > of offsetT) as will any results produced. Encountering a literal wider
> > than the specified width should probably result in treating it as O_big.
> >
>
> This is close to what I was thinking of yesterday. One thought was that
> any literal that comes in as a "load address" should be considered to be
> sign extended to the size of the register, and a "load register" should
> be zero extended.
Certainly, but that's something that callers have to take into account as
expr() itself cannot make such a decision.
Maciej