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add generic x86_32 support (#52634)

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* add generic x86_32 support

- Add support for i386-i586.
- Add `isx86_32` predicate that can replace most uses of `isi686`.
- `isi686` is reinterpreted to mean "exactly i686 arch, and not say i585 or i386".
- This branch was used to build working i586 kernel running on i586 hardware.

* revert `isi[345]86`, remove dead code

- Remove changes to dead code in `doubles.nix` and `for-meta.nix`.
- Remove `isi[345]86` predicates since other cpu families don't have specific model predicates.

* remove i386-linux since linux not supported on that cpu
This commit is contained in:
Daniel Goertzen
2019-01-06 12:57:36 -06:00
committed by Matthew Bauer
parent a4250d1478
commit 1c10efc912
11 changed files with 15 additions and 10 deletions
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2
lib/systems/platforms.nix
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@@ -467,6 +467,8 @@ rec {
};
selectBySystem = system: {
"i486-linux" = pc32;
"i586-linux" = pc32;
"i686-linux" = pc32;
"x86_64-linux" = pc64;
"armv5tel-linux" = sheevaplug;