[PATCH v2 0/5] Add support for LoongArch32

[mengqinggang]

Yeah, I intend to have this included in 2.43.
This can enable more people to use and find bugs as early as possible.

在 2025/12/22 20:22, Andreas K. Huettel 写道:
> 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
>>
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