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Date: Wed, 16 Sep 2009 18:16:14 +0200
Message-ID: <761ea48b0909160916y21771671g9399ddf9983ac5c0@mail.gmail.com>
Subject: Re: [Qemu-devel] tcg_abort()
From: Laurent Desnogues <laurent.desnogues@gmail.com>
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To: Gary Thomas <gary@mlbassoc.com>
Cc: qemu-devel@nongnu.org

On Wed, Sep 16, 2009 at 5:46 PM, Gary Thomas <gary@mlbassoc.com> wrote:
[...]
>
> /qemu-git-2009_09_16/tcg/arm/tcg-target.c:773: tcg fatal error
>
>> =A0 - how to reproduce the issue
>
> This one's harder - I'm running an x86 gnome application on an ARM
> system. =A0I'm not sure exactly what it was doing when the abort happened=
.
>
> Questions:
> =A0* The function in tcp-target.c seems complete, but it has
> =A0 =A0 =A0#if 1
> =A0 =A0 =A0 =A0tcg_abort();
> =A0 =A0 =A0#endif
> =A0 =A0which implies it's not complete or maybe just untested?
> =A0* How can I gather more information about what was going on
> =A0 =A0at the time to aid in fixing this?

Your problem is probably due to generated code being too far from
the helper functions (the helper functions can be thought of as a
library).

Could please try to replace the tcg_abort() on line 773 with these
two lines?

        tcg_out_movi32(s, cond, TCG_REG_R8, val);
        tcg_out32(s, (cond << 28) | 0x012fff30 | TCG_REG_R8); /* blx r8 */

I didn't test it, so you'll be my guinea pig :-)


Laurent