Patch to allow MIPS users to override default memory sizing

J. Johnston jjohnstn@redhat.com
Wed Jan 30 14:51:00 GMT 2002


Michael Meissner wrote:
> 
> I was working on some MIPS programs, and discovered that the memory
> sizing doesn't work in the simulator.  I added the following code to
> allow programs to override the default value (1 megabyte) in such a
> situation.  Is this ok to instal?
> 
> 2002-01-29  Michael Meissner  <meissner@redhat.com>
> 
>         * mips/cma101.c (__sizemem_default): Allow user to specify the
>         memory size.
>         (__sizemem): Use it.
> 

Yes, go ahead.

-- Jeff J.

> *** libgloss/mips/cma101.c.~1~  Mon Oct 15 17:21:11 2001
> --- libgloss/mips/cma101.c      Tue Jan 29 20:06:09 2002
> ***************
> *** 1,7 ****
>   /*
>    * cma101.c -- lo-level support for Cogent CMA101 development board.
>    *
> !  * Copyright (c) 1996, 2001 Cygnus Support
>    *
>    * The authors hereby grant permission to use, copy, modify, distribute,
>    * and license this software and its documentation for any purpose, provided
> --- 1,7 ----
>   /*
>    * cma101.c -- lo-level support for Cogent CMA101 development board.
>    *
> !  * Copyright (c) 1996, 2001, 2002 Cygnus Support
>    *
>    * The authors hereby grant permission to use, copy, modify, distribute,
>    * and license this software and its documentation for any purpose, provided
> *************** extern unsigned int __buserr_count(void)
> *** 179,184 ****
> --- 179,187 ----
>   extern void __default_buserr_handler(void);
>   extern void __restore_buserr_handler(void);
> 
> + /* Allow the user to provide his/her own defaults.  */
> + unsigned int __sizemem_default;
> +
>   unsigned int
>   __sizemem ()
>   {
> *************** __sizemem ()
> *** 189,194 ****
> --- 192,202 ----
>     extern void *end;
>     char *endptr = (char *)&end;
>     int extra;
> +
> +   /* If the linker script provided a value for the memory size (or the user
> +      overrode it in a debugger), use that.  */
> +   if (__sizemem_default)
> +     return __sizemem_default;
> 
>     /* If we are running in kernel segment 0 (possibly cached), try sizing memory
>        in kernel segment 1 (uncached) to avoid some problems with monitors.  */
> 
> --
> Michael Meissner, Red Hat, Inc.  (GCC group)
> PMB 198, 174 Littleton Road #3, Westford, Massachusetts 01886, USA
> Work:     meissner@redhat.com           phone: +1 978-486-9304
> Non-work: meissner@the-meissners.org    fax:   +1 978-692-4482



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