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Message-ID: <3D08CAB7.50201@cygnus.com>
Date: Thu, 13 Jun 2002 09:39:00 -0000
From: Andrew Cagney <ac131313@cygnus.com>
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To: trix@redhat.com
Cc: gdb-patches@sources.redhat.com
Subject: Re: patch d10v sim large transfers.
References: <3D08C70D.4CB485D4@redhat.com>
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> sim/d10v:
> 2002-06-13  Tom Rix  <trix@redhat.com>
> 
> 	* interp.c (xfer_mem): Fix transfers across multiple segments.
>  
> Index: sim/d10v/interp.c
> ===================================================================
> RCS file: /cvs/src/src/sim/d10v/interp.c,v
> retrieving revision 1.11
> diff -d -u -p -r1.11 interp.c
> --- sim/d10v/interp.c	9 Jun 2002 15:45:46 -0000	1.11
> +++ sim/d10v/interp.c	13 Jun 2002 16:18:34 -0000
> @@ -715,7 +715,7 @@ xfer_mem (SIM_ADDR virt,
>  {
>    int xfered = 0;
>  
> -  while (xfered < size)
> +  while (0 < size)
>      {
>        uint8 *memory;
>        unsigned long phys;
> @@ -754,9 +754,10 @@ xfer_mem (SIM_ADDR virt,
>        virt += phys_size;
>        buffer += phys_size;
>        xfered += phys_size;
> +      size -= phys_size;
>      }
>  
> -  return size;
> +  return xfered;
>  }

Is the problem fixed if, instead, you do a short/partial read 
(eliminating the loop?).

Andrew