[PATCH v2 0/5] Add support for LoongArch32

[mengqinggang]

Ping.

If there are no suggestions, OK for master?


在 2025/12/25 16:06, mengqinggang 写道:
> 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
>>>