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On 05/05/2014 19:36, Matt Turner wrote: |
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> On Mon, May 5, 2014 at 3:02 PM, Joshua Kinard <kumba@g.o> wrote: |
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>> I cannot speak for anything outside of the standard/original MIPS ISAs, but |
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>> I thought we killed off mips1 long ago. When did that come back? Almost |
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>> anything out there should be able to handle mips2 at a bare minimum (only |
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>> R2000 and R3000-based systems, like certain DECStations, would need mips1). |
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>> mips2 is also the branch point for the mips32r* ISAs, so if any of the |
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>> original, 32-bit ISAs should be kept, that would be mips2. mips1 can go. |
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> |
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> We've had this discussion before. If you're going to have >mips2 |
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> stages, then there's zero reason to have mips2 stages since mips2 |
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> effectively doesn't exist. |
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It's been a while, but I thought we only kept a mips2 stage1 around for |
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those that wanted a baseline to build their own stage2 or stage3's from. |
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You can do this with a mips1 as well, but mips2 is, more or less, the |
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baseline from which all other possible ISAs and stages can be built from, as |
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long as you don't care about R2k or R3k CPUs. stage3's can be the higher |
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mips32r* ISAs. |
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I personally don't see a point in having mips1 or mips2 stage3's, only a |
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stage1 to use as a bootstrap for new machines or ISAs. |
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-- |
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Joshua Kinard |
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Gentoo/MIPS |
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kumba@g.o |
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4096R/D25D95E3 2011-03-28 |
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"The past tempts us, the present confuses us, the future frightens us. And |
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our lives slip away, moment by moment, lost in that vast, terrible in-between." |
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--Emperor Turhan, Centauri Republic |
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