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lib.systems: raise minimum loongarch64 feature support (#403201)

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Aleksana 2025-05-23 10:00:37 +08:00 • committed by GitHub
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5 changed files with 102 additions and 2 deletions
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45
lib/systems/architectures.nix
View file

@ -329,6 +329,39 @@ rec {
"avx512"
"fma"
];
# LoongArch64
# https://github.com/loongson/la-toolchain-conventions
loongarch64 = [
"fpu64"
];
la464 = [
"fpu64"
"lsx"
"lasx"
];
la664 = [
"fpu64"
"lsx"
"lasx"
"div32"
"frecipe"
"lam-bh"
"lamcas"
"ld-seq-sa"
];
"la64v1.0" = [
"fpu64"
"lsx"
];
"la64v1.1" = [
"fpu64"
"lsx"
"div32"
"frecipe"
"lam-bh"
"lamcas"
"ld-seq-sa"
];
# other
armv5te = [ ];
armv6 = [ ];
@ -486,6 +519,16 @@ rec {
ampere1a = [ "ampere1" ] ++ inferiors.ampere1;
ampere1b = [ "ampere1a" ] ++ inferiors.ampere1a;
# LoongArch64
loongarch64 = [ ];
"la64v1.0" = [ "loongarch64" ];
la464 = [ "la64v1.0" ] ++ inferiors."la64v1.0";
"la64v1.1" = [ "la64v1.0" ] ++ inferiors."la64v1.0";
la664 = withInferiors [
"la464"
"la64v1.1"
];
# other
armv5te = [ ];
armv6 = [ ];
@ -574,5 +617,7 @@ rec {
aesSupport = featureSupport "aes";
fmaSupport = featureSupport "fma";
fma4Support = featureSupport "fma4";
lsxSupport = featureSupport "lsx";
lasxSupport = featureSupport "lasx";
};
}

10
lib/systems/examples.nix
View file

@ -170,9 +170,17 @@ rec {
libc = "newlib";
};
loongarch64-linux = {
# https://github.com/loongson/la-softdev-convention/blob/master/la-softdev-convention.adoc#10-operating-system-package-build-requirements
loongarch64-linux = lib.recursiveUpdate platforms.loongarch64-multiplatform {
config = "loongarch64-unknown-linux-gnu";
};
loongarch64-linux-embedded = lib.recursiveUpdate platforms.loongarch64-multiplatform {
config = "loongarch64-unknown-linux-gnu";
gcc = {
arch = "loongarch64";
strict-align = true;
};
};
mmix = {
config = "mmix-unknown-mmixware";

15
lib/systems/platforms.nix
View file

@ -572,6 +572,19 @@ rec {
};
};
loongarch64-multiplatform = {
gcc = {
# https://github.com/loongson/la-softdev-convention/blob/master/la-softdev-convention.adoc#10-operating-system-package-build-requirements
arch = "la64v1.0";
strict-align = false;
# Avoid text sections of large apps exceeding default code model
# Will be default behavior in LLVM 21 and hopefully GCC16
# https://github.com/loongson-community/discussions/issues/43
# https://github.com/llvm/llvm-project/pull/132173
cmodel = "medium";
};
};
# This function takes a minimally-valid "platform" and returns an
# attrset containing zero or more additional attrs which should be
# included in the platform in order to further elaborate it.
@ -607,6 +620,8 @@ rec {
else if platform.parsed.cpu == lib.systems.parse.cpuTypes.powerpc64le then
powernv
else if platform.isLoongArch64 then
loongarch64-multiplatform
else
{ };
}