Date: Sat, 17 Dec 2011 10:37:52 -0700 From: Ian Lepore <freebsd@damnhippie.dyndns.org> To: Matthieu Kraus <matthieu.kraus@s2008.tu-chemnitz.de> Cc: freebsd-arm@freebsd.org Subject: Re: cesa patch issues Message-ID: <1324143472.3268.147.camel@revolution.hippie.lan> In-Reply-To: <20111217151858.182523ch5m4bclw2@mail.tu-chemnitz.de> References: <20111217151858.182523ch5m4bclw2@mail.tu-chemnitz.de>
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On Sat, 2011-12-17 at 15:18 +0100, Matthieu Kraus wrote: > [...] > However I can't seem to get my modifications to work as I always get: > > vm_fault(0xc35789c8, 0, 2, 0) -> 1 > Fatal kernel mode data abort: 'Translation Fault (P)' > trapframe: 0xd2069bb0 > FSR=00000017, FAR=00000010, spsr=80000013 > r0 =0000001f, r1 =00000000, r2 =00000000, r3 =00000004 > r4 =00000000, r5 =00000000, r6 =00000000, r7 =c373d898 > r8 =c3736000, r9 =00000000, r10=c3736000, r11=d2069c38 > r12=00000000, ssp=d2069bfc, slr=c0c02f40, pc =c0c22d58 > > [ thread pid 1439 tid 100057 ] > Stopped at cpu_initclocks+0x3340: str r4, [r3, #0x00c] > > I'm completely new to kernel development, so any hints on how to > further debug the issue (traces in ddb didn't seem very informational > to me) would be highly appreciated. > > kind regards, > Matthieu Kraus All that can be seen from what you posted is that the immediate cause of the error is a bad value in register r3. The ddb backtrace that wasn't helpful to you might contain clues that are meaningful to others; you should post it. -- Ian
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