Date: Fri, 4 Mar 2016 09:54:44 +0900 From: Masanori Ogino <masanori.ogino@...il.com> To: musl@...ts.openwall.com, lowrisc-dev@...ts.lowrisc.org Subject: Re: Interest in "Porting musl libc to RISC-V" project for GSoC 2016 Hello, 2016-03-04 7:06 GMT+09:00 Szabolcs Nagy <nsz@...t70.net>: > last time iirc musl port was considered to be > not large enough in itself for a gsoc project > (i think it should not take more than 2 months > but i don't know the current state of risc-v > qemu/linux/gcc/etc) > > you might need to think additional things to work on. > > for musl, one idea is to invest extra time on testing. > > for risc-v i think polishing the toolchain and the docs > would be useful. Agreed. > there are some basic problems with the risc-v software > eco-system: > > there is no proper sysv psabi spec. (designing one would > have been better than copying obsolete nonsense from mips > as i can see in the glibc port.) Hmm, ABI is an important factor for the proposal, but I probably won't have enough time to invent a new ABI and implement it during this summer... Anyway, would you give me any well-designed psABI (or non-SysV-psABI) examples? > nothing is upstream yet (gcc/linux/.. ports are > maintained out of tree, working with the upstream > community is important for many reasons). Agreed with the importance of merging to upstream. > risc-v mailing lists are not public, only subscribers > can see or participate in the discussions. (this is > bad given that there are no specs, no upstreamed code > so no source of information for outsiders.) I think it would be great if archives are public. I don't know the reason why the project decide to do so. > for a musl port this means that we don't have abi > stability guarantees, the port can stop working with > the rest of the risc-v software stack. so for a > successful port i think some scripts should be developed > to build and test the latest risc-v things against musl > (cross-toolchain, rootfs, etc) so we can keep it working. Indeed it's great to have an automated testing infrastructure. I really love CI. Thank you for your suggestion! -- Masanori Ogino
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