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mips64el support #161158

Merged
merged 9 commits into from Mar 17, 2022
Merged

mips64el support #161158

merged 9 commits into from Mar 17, 2022

Commits on Mar 11, 2022

  1. lib/systems: add mips64el definitions 

    MIPS has a large space of {architecture,abi,endianness}; this commit
adds all of them to lib/systems/platforms.nix so we can be done with
it.

Currently lib/systems/inspect.nix has a single "isMips" predicate,
which is a bit ambiguous now that we will have both mips32 and mips64
support, with the latter having two ABIs.  Let's add four new
predicates (isMips32, isMips64, isMips64n32, and isMips64n64) and
treat the now-ambiguous isMips as deprecated in favor of the
more-specific predicates.  These predicates are used mainly for
enabling/disabling target-specific workarounds, and it is extremely
rare that a platform-specific workaround is needed, and both mips32
and mips64 need exactly the same workaround.

The separate predicates (isMips64n32 and isMips64n64) for ABI
distinctions are, unfortunately, useful.  Boost's user-scheduled
threading (used by nix) does does not currently supports mips64n32,
which is a very desirable ABI on routers since they rarely have
more than 2**32 bytes of DRAM.
    Adam Joseph committed Mar 11, 2022
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  2. Update pkgs/top-level/stage.nix 

    Co-authored-by: John Ericson <git@JohnEricson.me>
    @Ericson2314
    2 people authored and Adam Joseph committed Mar 11, 2022
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  3. s/makeStaticParsedPlatform/makeMuslParsedPlatform/g

    Adam Joseph committed Mar 11, 2022
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  4. https://github.com/NixOS/nixpkgs/pull/161158#pullrequestreview-903824138

    Adam Joseph committed Mar 11, 2022
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  5. https://github.com/NixOS/nixpkgs/pull/161158#pullrequestreview-903824553

    Adam Joseph committed Mar 11, 2022
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  6. remove float = "hard" from mips entries

    Adam Joseph committed Mar 11, 2022
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  7. comment: explain why gnuabi64 has a rustc.config but gnuabin32 does not.

    Adam Joseph committed Mar 11, 2022
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  8. This commit adds only comments to platforms.nix.

    Adam Joseph committed Mar 11, 2022
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  9. Ericson2314's suggestion here: #161158 (comment)

    Adam Joseph committed Mar 11, 2022
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