Date: Thu, 10 Nov 2016 21:34:12 +0000 From: Ruslan Bukin <ruslan.bukin@cl.cam.ac.uk> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org>, Bryan Drewery <bdrewery@freebsd.org>, Ruslan Bukin <br@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r308130 - in head: . gnu/lib/libgcc gnu/usr.bin/binutils gnu/usr.bin/binutils/ld gnu/usr.bin/binutils/libbfd gnu/usr.bin/cc gnu/usr.bin/gdb gnu/usr.bin/gdb/libgdb lib/libc lib/libc/mips... Message-ID: <20161110213412.GA21672@bsdpad.com> In-Reply-To: <CAJ-Vmo=DVM1W0D9hF-ZD3461ju8san44i_iPk5E3oh68G%2BQRiw@mail.gmail.com> References: <201610311533.u9VFXw2x053156@repo.freebsd.org> <128f2edc-eced-dc8b-72b4-267e1d26bd48@FreeBSD.org> <20161103201059.GA2104@bsdpad.com> <CAJ-Vmo=YBkTZ_rc7iDKzSgJ55QwFTF8S5QJ1v=jtadffFerCbw@mail.gmail.com> <CAJ-Vmo=DVM1W0D9hF-ZD3461ju8san44i_iPk5E3oh68G%2BQRiw@mail.gmail.com>
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Hi, Adrian,
thanks, but I have lack of ideas yet.
I just tested this on Ingenic X1000 (mips.mipsel) and it works fine,
as well as mips.mipselhf (this hardware has FPU).
I have no hardware without FPU.
What exactly COP_1 bits you have commented to get rid of COP1_UNUSABLE?
Ruslan
On Thu, Nov 10, 2016 at 01:09:20PM -0800, Adrian Chadd wrote:
> ok, so there are two problems with mips now.
>
> * COP1_UNUSABLE - which is now being logged, and we were likely
> triggering it before. The problem: we always turned it on. If I
> comment out flipping on the COP1 bits in the .S files, those
> exceptions go away.
>
> * Page faults, but that may be me with an older userland:
>
> BAD_PAGE_FAULT: pid 1 tid 100001 (init), uid 0: pc 0x404237c0 got a
> read fault (type 0x2) at 0x8
> Trapframe Register Dump:
> zero: 0 at: 0xffffffffffffffe0 v0: 0x404471b8 v1:
> 0xffffffffffffffff
> a0: 0x404471b8 a1: 0x7ffeea50 a2: 0x16c a3: 0
> t0: 0 t1: 0 t2: 0 t3: 0x70000011
> t4: 0x11 t5: 0x70000013 t6: 0x3 t7: 0
> t8: 0 t9: 0x4041c940 s0: 0 s1: 0x40417000
> s2: 0x7fffeee0 s3: 0xffffffffffffffff s4: 0xc s5: 0x40427000
> s6: 0x7fffeecc s7: 0x7ffeea50 k0: 0 k1: 0
> gp: 0x4044e630 sp: 0x7ffee838 s8: 0x2 ra: 0x404224d4
> sr: 0xfc13 mullo: 0 mulhi: 0 badvaddr: 0x8
> cause: 0x8 pc: 0x404237c0
> Page table info for pc address 0x404237c0: pde = 0x809aa000, pte = 0xa001ba9a
> Dumping 4 words starting at pc address 0x404237c0:
> 8e100008 1600fff1 8f828070 100000a3
>
>
>
> -adrian
>
>
> On 10 November 2016 at 12:49, Adrian Chadd <adrian.chadd@gmail.com> wrote:
> > hi,
> >
> > This fails to boot on actual mips24k hardware, no hardfloat:
> >
> > COP1_UNUSABLE: pid 1 tid 100001 (init), uid 0: pc 0x404237c0 ra 0x404224d4
> > Trapframe Register Dump:
> > zero: 0 at: 0xffffffffffffffe0 v0: 0x404471b8 v1:
> > 0xffffffffffffffff
> >
> > .. lots of that the moment we boot userland.
> >
> >
> >
> > -adrian
> >
> >
> > On 3 November 2016 at 13:10, Ruslan Bukin <ruslan.bukin@cl.cam.ac.uk> wrote:
> >> On Thu, Nov 03, 2016 at 12:39:48PM -0700, Bryan Drewery wrote:
> >>> On 10/31/16 8:33 AM, Ruslan Bukin wrote:
> >>> > Modified: head/share/mk/bsd.cpu.mk
> >>> > ==============================================================================
> >>> > --- head/share/mk/bsd.cpu.mk Mon Oct 31 15:11:55 2016 (r308129)
> >>> > +++ head/share/mk/bsd.cpu.mk Mon Oct 31 15:33:58 2016 (r308130)
> >>> > @@ -303,6 +303,9 @@ MACHINE_CPU = v9 ultrasparc ultrasparc3
> >>> >
> >>> > .if ${MACHINE_CPUARCH} == "mips"
> >>> > CFLAGS += -G0
> >>> > +.if ${TARGET_ARCH:Mmips*hf}
> >>>
> >>> TARGET_ARCH is not valid here. This broke building ports. Fixed in
> >>> r308262.
> >>>
> >>
> >> Thank you!
> >>
> >> Ruslan
> >>
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