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Re: $ta0 .. $ta3 registers in O32 on MIPS
On Wed, Sep 28, 2011 at 10:11:40AM -0500, Paul_Koning@Dell.com wrote:
> >I was expecting an error message and I'm wondering, was this intentional?
> I would say so. I call this a feature. It makes it easier to write assembly code that assembles without change in both O32 and N32/N64. Consider a function that has 4 or fewer arguments, but needs a pile of scratch registers. It can use ta0-ta3 as four scratch registers, which is correct in all the ABIs.
Turns out that later IRIX version also retroactively introduced the
ta registers for O32 and I just never noticed. So I'm going to change the
Linux kernel headers for consistence and compatibility with everybody else.