2009-12-01 Till Straumann <strauman@slac.stanford.edu>

* shared/start/start.S: Added AltiVec support (initializing
	MSR[VE], VSCR and VRSAVE).

c/src/lib/libbsp/powerpc/ChangeLog

@@ -1,3 +1,8 @@
+2009-12-01	Till Straumann <strauman@slac.stanford.edu>
+
+	* shared/start/start.S: Added AltiVec support (initializing
+	MSR[VE], VSCR and VRSAVE).
+
 2009-12-01	Till Straumann <strauman@slac.stanford.edu>
 
 	* shared/vme/vme_universe.c: moved extern declaration

c/src/lib/libbsp/powerpc/shared/start/start.S

@@ -7,7 +7,11 @@
  *  found in found in the file LICENSE in this distribution or at
  *  http://www.rtems.com/license/LICENSE.
  *
+<<<<<<< start.S
  *  $Id$
+=======
+ *  $Id$
+>>>>>>> 1.25
  *
  */
 
@@ -60,6 +64,21 @@ __rtems_entry_point:
 	mr	r29,r5
 	mr	r28,r6
 	mr	r27,r7
+
+#ifdef __ALTIVEC__
+	/* enable altivec; gcc may use it! */
+	mfmsr r0
+	oris  r0, r0, (1<<(31-16-6))
+	mtmsr r0
+	/*
+	 * set vscr and vrsave to known values
+	 */
+	li    r0, 0
+	mtvrsave r0
+	vxor   0,0,0
+	mtvscr 0
+#endif
+
 	/*
 	 * Make sure we have nothing in BATS and TLB
 	 */