[PATCH v2 0/5] Add support for LoongArch32

[mengqinggang]

Hi Adhemerval,

If you have time to review and the v5 patches need to be send.
Please let me know. Thank you very much!

在 2025/12/30 01:31, Andreas K. Huettel 写道:
> So, after skimming also the threads on gcc and binutils, I'm not really fundamentally
> opposed to still adding LoongArch32 in 2.43. But- we still need patch review (R-B).
>
> My suggestion would be:
> * If you manage to get a complete review before we start the machine testing (planned
>    4/January), let's still add it.
> * Otherwise, let's delay it until after the release and add it to master afterwards.
>
>
> Am Montag, 29. Dezember 2025, 15:25:34 Mitteleuropäische Normalzeit schrieb Adhemerval Zanella Netto:
>> I think it was sent too late, considering the last version (v4). The patchset
>> is not large, most of the additions is the abilist files; so I think it should
>> be feasible to review (assuming some would take this work for 2.43).
>>
>> Andreas, do you prefer to postpone to 2.44 or should it be ok for 2.43?
>>
>> On 25/12/25 05:06, mengqinggang wrote:
>>> I send a v4 patch series for LoongArch32.
>>> The binutils, gcc and kernel upstream master branch have add LoongArch32 support.
>>> Do we need to wait for them release a new version?
>>>
>>>
>>> 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
>>>>>
>>
>