Re: Experimental fix for my memcpy_{to,from}fs problem

[Miguel Bolanos <mike@linuxlabs.com>]

Applied. Thanks

Mike


On Tue, 2004-06-01 at 19:33, claudio@conectiva.com wrote:
> On Tue, 1 Jun 2004, Eduardo Pereira Habkost wrote:
> 
> > The following patch fixes the problem on my system. Probably
> > with some versions of bcc the patch will break something.
> >
> > I've added code to save the contents of SI and DI, I don't know if the
> > callers of these functions assume that SI and DI are touched, but just
> > in case.
> >
> > Now the system booted and ran flawlessly.
> 
> You may need to apply the same fix in strlen_fromfs().
> 
> diff -rud e/arch/i86/mm/user.c elks/arch/i86/mm/user.c
> --- e/arch/i86/mm/user.c        2004-06-01 22:29:01.000000000 -0300
> +++ elks/arch/i86/mm/user.c     2004-06-01 22:27:54.000000000 -0300
> @@ -165,8 +165,9 @@
> 
>  #ifndef S_SPLINT_S
>  #asm
> -
> -       mov     ax,[bp-6]       ! source segment (local variable)
> +       push    di
> +       push    si
> +       mov     ax,[bp-2]       ! source segment (local variable)
>         mov     es,ax
>         mov     di,[bp+4]       ! source address
>         cld
> @@ -177,6 +178,8 @@
>         sub     di,[bp+4]       ! calc len +1
>         dec     di
>         mov     [bp-6],di       ! save in local var ds
> +       pop     si
> +       pop     di
>  #endasm
>  #endif
> 
> 
> -
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