Date: Fri, 20 Sep 2019 07:04:08 +0900 (JST) From: Mori Hiroki <yamori813@yahoo.co.jp> To: Kyle Evans <kevans@freebsd.org>, Warner Losh <imp@bsdimp.com> Cc: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org>, Ed Maste <emaste@freebsd.org> Subject: Re: gcc 4.2.1 will delete Message-ID: <897680955.2289971.1568930648721.JavaMail.yahoo@jws703105.mail.ssk.yahoo.co.jp> In-Reply-To: <CACNAnaHUfSdSj_Q=rGcmWiqM8gBBk8NLNkesBfwgBNQEe65YGg@mail.gmail.com> References: <441318706.278852.1566618835359.JavaMail.yahoo.ref@jws705006.mail.kks.yahoo.co.jp> <441318706.278852.1566618835359.JavaMail.yahoo@jws705006.mail.kks.yahoo.co.jp> <CANCZdfrxexQ=_oL4ewaP5=wn8%2BDA%2BkmAuD6H9t%2BK=K65WnBGuA@mail.gmail.com> <CACNAnaFDc3-ta8ixtf8TyjOQcsx2xP9W2iP-s4c21jw7GxkeQA@mail.gmail.com> <CACNAnaHUfSdSj_Q=rGcmWiqM8gBBk8NLNkesBfwgBNQEe65YGg@mail.gmail.com>
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Hi. I want try clang on mips. When can use it ? I think clang is better than external gcc. Because of ZRouter have build setting for arm and armv7 by clang already. Hiroki Mori ----- Original Message ----- >From: Kyle Evans <kevans@freebsd.org> >To: Warner Losh <imp@bsdimp.com>=20 >Cc: Mori Hiroki <yamori813@yahoo.co.jp>; freebsd-mips@freebsd.org; Ed Mast= e <emaste@freebsd.org> >Date: 2019/8/28, Wed 02:18 >Subject: Re: gcc 4.2.1 will delete >=20 >On Tue, Aug 27, 2019 at 11:59 AM Kyle Evans <kevans@freebsd.org> wrote: >> >> (CC'ing emaste@ as well, because this is a bit of a status report) >> >> On Fri, Aug 23, 2019 at 11:01 PM Warner Losh <imp@bsdimp.com> wrote: >> > >> > On Fri, Aug 23, 2019, 9:54 PM Mori Hiroki <yamori813@yahoo.co.jp> wrot= e: >> > >> > > Hi >> > > >> > > gcc 4.2.1 will delete. >> > > >> > > How about go mips architecture ? >> > > >> > > https://reviews.freebsd.org/rS351429 >> > >> > >> > There is good support for an external toolchain today. Clang has some >> > support, but it works a lot better in llvm 9.0,=C2=A0 which is due in = about a >> > month. >> > >> > Warner >> > >> >> I have the following open work for mips32 w/ in-tree llvm (and llvm90 >> has the same issues for some of them): >> - https://reviews.freebsd.org/D21435 (_mcount needs to be explicitly >> placed in .text; clang will emit ".section .mdebug.abi32" before >> everything else so _mcount ends up in it -- I don't think we can >> really blame clang, we probably should've specified) >> >> - https://people.freebsd.org/~kevans/mips-llvm.diff (.eh_frame ends up >> with some relocations we can't have in non-writable section; dirty >> dirty hack to make .eh_frame writable in clang and making sure the >> synthetic section that lld produces is also writable [this part's even >> dirtier than the first]) >> >> - https://people.freebsd.org/~kevans/mips-opts.diff (fusefs tests >> currently hang and I haven't had time to figure out why or try and >> reproduce it against llvm90; the rest of the diff is simply enabling >> full LLVM/LLD world) >> >> With these three I can make build and install a world w/ MALTA kernel, >> all otherwise modified, and things generally work except kldxref: >> >> Building /boot/kernel/linker.hints >> kldxref: /boot/kernel/kernel: too many segments >> >> root@:~ # uname -a >> FreeBSD=C2=A0 13.0-CURRENT FreeBSD 13.0-CURRENT #0 >> b101f7f4b1d-c262228(mips-llvm)-dirty: Tue Aug 27 09:42:00 CDT 2019 >> root@viper.audeuro.com:/usr/obj/usr/src/mips-llvm/sys/MALTA=C2=A0 mips >> >> Next step, I'll fudge this into freebsd-wifi-build and test it on the >> hardware in my test lab... >> > >I almost forgot this one: > >- https://people.freebsd.org/~kevans/mips-csu.diff > >I pulled a .cprestore directive out of thin air because, AFAICT, it >really doesn't matter. We do similar hijinks in >^/sys/mips/include/profile.h, apparently, in MCOUNT. > > >
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