[PATCH v2 0/5] Add support for LoongArch32

[Andreas K. Huettel]

Am Donnerstag, 18. Dezember 2025, 13:30:06 Mitteleuropäische Normalzeit schrieb mengqinggang:
> Add support for LoongArch32(LA32) with ilp32d abi and
> LoongArch32 Reduced(LA32R) with ilp32s abi.

Do you intend to have this included in 2.43 ?

I would personally rather recommend we add it at earliest immediately after
the realease.

> 
> The gcc and binutils master branch have added LA32 support.
> 
> The kernel has added basic LA32 support[6]. But build infrastructures
> of LoongArch32 are not enabled yet, because we need to adjust
> irqchip drivers and wait for GNU toolchain be upstream first.
> 
> You can build toolchains by script/build-many-glibcs.py:
> LA32 ilp32d abi:
> build-many-glibcs.py -j128 --keep all . compilers loongarch32-linux-gnu
> LA32R ilp32s abi:
> build-many-glibcs.py -j128 --keep all . compilers loongarch32-linux-gnusf
> 
> LA32 tested by qemu-user and qemu-system. Most testcases passed except for several
> about gdb and math-fenv on soft float abi. 
> Tested on LA64 with no regression.
> 
> These patches are based on Jiajie Chen's previous work[1].
> A Chinese LA32R instruction set manual is here[2].
> There is currently no separate LA32 instruction set manual.
> The LA64 instruction set manual[3] specifies the instructions available in LA32.
> A LA32 linux system based on qemu user is here[4].
> A LA32 linux system based on qemu system is here[5].
> 
> [1] https://github.com/jiegec/glibc/tree/loongarch32
> [2] https://www.loongson.cn/uploads/images/2025032109211238668.%E9%BE%99%E6%9E%B6%E6%9E%8432%E4%BD%8D%E7%B2%BE%E7%AE%80%E7%89%88%E5%8F%82%E8%80%83%E6%89%8B%E5%86%8C_r1p04.pdf
> [3] https://github.com/loongson/LoongArch-Documentation/blob/main/docs/LoongArch-Vol1-EN/basic-integer-instructions/overview-of-basic-integer-instructions.adoc
> [4] https://github.com/sunhaiyong1978/CLFS-for-LoongArch32/blob/main/Qemu_For_LoongArch32-Simple.md
> [5] https://github.com/sunhaiyong1978/CLFS-for-LoongArch32/blob/main/Qemu_System_For_LoongArch32-Simple.md
> [6] https://lore.kernel.org/loongarch/176559874944.2388135.2320307195215147125.pr-tracker-bot@kernel.org/T/#t
> 

-- 
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, libreoffice)
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