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Re: [Qemu-devel] Re: SH4: Implement FD bit
From: |
Lionel Landwerlin |
Subject: |
Re: [Qemu-devel] Re: SH4: Implement FD bit |
Date: |
Thu, 11 Dec 2008 23:02:13 +0100 |
Le jeudi 11 décembre 2008 à 21:57 +0100, Laurent Desnogues a écrit :
> On Thu, Dec 11, 2008 at 9:12 PM, Lionel Landwerlin
> <address@hidden> wrote:
> > According to you, should the FD bit be "up" by default in user mode
> > emulation ?
> >
> > By putting the FD bit "down" in cpu_sh4_reset(target-sh4/translate.c), I'm
> > able to restore initial
> > behavior of user mode emulation (that means, qemu does not exits very early
> > before libc initialization
> > (see the traces before)).
> >
> > Maybe putting down the FD bit should be done in a user mode part only...
> > I'm wondering...
>
> It doesn't look unacceptable to have some features enabled
> in user mode that are not set at reset, since typically the OS
> will enable these features either as its boot process or
> depending on a process requirements.
>
> BTW ins't the need for floating-point instructions contained
> in some ELF SH4 flags?
>
>
> Laurent
>
>
Hi Laurent,
According to you, where should I put this "fix" in linux-user/ ?
--
Lione Landwerlin
O p e n W i d e 14, rue Gaillon 75002 Paris