Jeff Law via Gcc-patches <gcc-patches@gcc.gnu.org> 于2021年8月30日周一 下午9:48写道： > > > > On 8/30/2021 2:47 AM, YunQiang Su wrote: > > 在 2021/8/30 5:00, Jeff Law 写道: > >> > >> > >> On 8/28/2021 1:23 AM, Xi Ruoyao wrote: > >>> On Fri, 2021-08-27 at 15:28 -0600, Jeff Law via Gcc-patches wrote: > >>>> > >>>> On 8/26/2021 10:58 PM, YunQiang Su wrote: > >>>>> for some instructions, MIPS r6 uses different encoding other than > >>>>> the previous releases. > >>>>> > >>>>> 1. mips/n32.S disable .set mips4: since it casuses old insn encoding > >>>>> is used. > >>>>> https://github.com/libffi/libffi/pull/396 > >>>>> 2. mips/ffi.c: the encoding for JR is hardcoded: we need to use > >>>>> different value for r6 and pre-r6. > >>>>> https://github.com/libffi/libffi/pull/401 > >>>>> > >>>>> libffi/ > >>>>> PR libffi/83636 > >>>>> * src/mips/n32.S: disable .set mips4 > >>>>> * src/mips/ffi.c: use different JR encoding for r6. > >>>> These should go to the upstream libffi project. Once accepted there > >>>> you > >>>> can add them to GCC. > >>> Hi Jeff, > >>> > >>> The two PRs are already merged, and released since libffi-3.3.0 (now > >>> the > >>> upstream latest release is 3.4.2). > >> ACK. Thanks for confirming. It's always OK to cherrypick/backport > >> from libffi back to GCC. > >> > >>> > >>> I don't have a MIPSr6 so I can't test though. > >> Understood. Me neither, but I really should get a tiny chroot for > >> mipsr6 so that my tester can validate it regularly. > >> > > > > We have port Debian to MIPS64r6el. > > http://58.246.137.130:20180/tools/tarball/ > > You can use both buster(Debian 10) or bullseye (Debian 11). > > > > And both qemu-system and qemu-user can work. > Understood. I need the minimal chroot to compress down under 100M to
A minimal tarball is ready now with size about 87M. > make gitlab happy (that's where my scripts & jenkins system expect to > find them). My scripts to build the chroots also ensure a consistent > set of packages & version #s across the different systems being > tested. I've just never gotten around to building one for mips64r6. I > could probably take yours trim out unnecessary stuff and use it for > now. Getting a bootstrap test on the target weekly is definitely helpful. > That's great. Since the minimal rootfs lacks of lots of tools, and if you need some tools, you can just apt install them,then. > jeff
