Re: MPE Port

[Jeffrey A Law <law@cygnus.com>]

  In message < 4.1.19990906102604.00c75df0@garfield.dis.com >you write:
  > Explanation:
  > 
  > Handle certain MPE nuances such as bcopy() not being able to do
  > overlapped moves. Invoke millicode instead of bcopy().
  > 
  > Sat Sep  4 18:00:00 PDT 1999 Mark Klein (mklein@dis.com)
  > 
  >         * pa/xm-pampeix.h: New file for the MPE port.
  > 
  > *** egcs/gcc/config/pa/xm-pampeix.h	Wed Dec 31 16:00:00 1969
  > --- egcs-ss/gcc/config/pa/xm-pampeix.h	Mon Aug 30 21:52:06 1999
  > ***************
  > *** 0 ****
  > --- 1,109 ----
  > + /* Configuration for GNU C-compiler for PA-RISC.
  > +    Copyright (C) 1998 Free Software Foundation, Inc.
  > +    Contributed by Mark Klein (mklein@dis.com)           
Copyright date.

  > + You should have received a copy of the GNU General Public License
  > + along with GNU CC; see the file COPYING.  If not, write to
  > + the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
Address update.

  > + /* Use System V memory functions.  */
  > + #ifndef _BCMP_DEFINED
  > + #define _BCMP_DEFINED
  > + #ifndef BSTRING
  > + #define BSTRING
  > + #endif
  > + #if !defined(bcopy) && !defined(HAS_BCOPY)
  > + inline static void
  > + bcopy(const void *src,void *dst,int len) {
  > + 	asm volatile (
  > + 			".import $$lr_unk_unk,MILLICODE;	
  > + 			copy %0, %%r26;
  > + 			copy %1, %%r25;
  > + 			bl $$lr_unk_unk,%%r31;
  > + 			copy %2, %%r24"
  > + 					:
  > + 					: "r" (src),
  > + 					  "r" (dst),
  > + 					  "r" (len)
  > + 					: "%r24",
  > + 					  "%r25",
  > + 					  "%r26",
  > + 					  "%r31");
  > + }
  > + #endif
Ouch.  I presume you do not have a function memcpy, memmove or similar routine?

I'd like to hold off on that fragment for now -- we may be able to make the
entire point moot by having libiberty available for host and build machines.


  > + #define STARTFILE_SPEC		""
?!?  This does not belong in an xm.h file.


jeff