Re: [OpenBIOS] [PATCH 10/10] Adding filll Forth primitive

[William Hahne]

On Wed, Aug 10, 2011 at 6:01 AM, Mark Cave-Ayland <
[e-mail]> wrote:
> On 09/08/11 22:55, William Hahne wrote:
>
> This is a forth primitive that is required by BootX. It just fills some
> > specified memory address and length with longs.
> >
> > Index: kernel/forth.c
> > ==============================**==============================**=======
> > --- kernel/forth.c (revision 1041)
> > +++ kernel/forth.c (working copy)
> > @@ -1610,6 +1616,20 @@
> > memset(src, value, count);
> >  }
> > +/*
> > filll       ( addr len byte -- )
> > */
> >
> > +static void filll(void)
> > +{
> > ucell value = POP();
> > ucell count = POP();
> > ucell *dest = (ucell *)cell2pointer(POP());
> > int i;
> > for (i = 0; i <= count / 4; i++) {
> > dest[i] = value;
> > }
> >
> > +}
> >  /*
> > unaligned-w@  ( addr -- w )
> >
> > @@ -1963,4 +1983,5 @@
> >      do_encode_file,         /* $encode-file */
> >      do_debug_xt,            /* (debug  */
> >      do_debug_off,           /* (debug-off) */
> > filll                   /* filll */
> >
> > };
> > Index: kernel/bootstrap.c
> > ==============================**==============================**=======
> > --- kernel/bootstrap.c (revision 1041)
> > +++ kernel/bootstrap.c (working copy)
> > @@ -89,7 +89,7 @@
> > "here", "here!", "dobranch", "do?branch", "unaligned-w@",
> > "unaligned-w!", "unaligned-l@", "unaligned-l!", "ioc@", "iow@",
> > "iol@", "ioc!", "iow!", "iol!", "i", "j", "call", "sys-debug",
> > "$include", "$encode-file", "(debug", "(debug-off)"
> > "$include", "$encode-file", "(debug", "(debug-off)", "filll"
> >
> > };
> >  /*
>
> This looks reasonably straightforward - again, can you add a reference to
> the documentation for this word as part of the commit message?

I wish I could. I had to do reverse engineer it from Apple's OF
implementation. I don't believe it is an official OF word.
> ATB,
>
> Mark.
>
> Sirius Labs: http://www.siriusit.co.uk/labs

William Hahne