Patch to allow MIPS users to override default memory sizing

[Michael Meissner <meissner at redhat dot com>]

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.

*** 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