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From: Max Filippov <jcmvbkbc@gmail.com>
To: 陳韋任 <chenwj@iis.sinica.edu.tw>
Cc: Jan Kiszka <jan.kiszka@web.de>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] When the tlb_fill will be called from generated code?
Date: Wed, 28 Sep 2011 10:36:05 +0400	[thread overview]
Message-ID: <201109281036.06021.jcmvbkbc@gmail.com> (raw)
In-Reply-To: <20110928035102.GA64408@cs.nctu.edu.tw>

> > They are called from the places in TBs where
> > tcg_gen_qemu_{ld,st}{8,16,32,64}{u,s} were injected.
> 
>   So you mean __stl_mmu/__ldl_mmu are called from the code cache.
>  
> > > breakpoint on __stl_mmu/__ldl_mmu, but the backtrace can only show
> > > something like,
> > >
> > > #0 鍮_stl_mmu (addr=196608, val=0, mmu_idx=0) at /tmp/chenwj/temp/qemu-0.13.0/softmmu_template.h:228
> > > #1 ?0x00000000400028e1 in ?? ()
> > > #2 ?0x00000000000000b4 in ?? ()
> > > #3 ?0xecc68ff412fa4137 in ?? ()
> > > #4 ?0x0000000000000000 in ?? ()
> 
>   Does those ?? mean since we are in the code cache, so GDB cannot
> show their backtarce?

Yes, at least for the frame #1. Addresses in frames #2-#4 don't look right, probably because #1 does not have a stack frame.

Thanks.
-- Max

  reply	other threads:[~2011-09-28  6:36 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-27  4:15 [Qemu-devel] When the tlb_fill will be called from generated code? 陳韋任
2011-09-27  7:06 ` Jan Kiszka
2011-09-27 11:02   ` 陳韋任
2011-09-27 11:29     ` Max Filippov
2011-09-28  3:51       ` 陳韋任
2011-09-28  6:36         ` Max Filippov [this message]
2011-09-29  3:40         ` Mulyadi Santosa
2011-09-29  3:45           ` 陳韋任
2011-09-27 17:10     ` Blue Swirl
2011-09-28  2:32       ` 陳韋任

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