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

* Makefile.am, start/start.S: Added AltiVec support
	(only effective if user modifies psim.cfg: CPU_CFLAGS
	choosing a CPU architecture with AltiVec or directly
	adding -maltivec, -mabi=altivec).

	* start/start.S: removed '.file' statement which
	confused gdb.

c/src/lib/libbsp/powerpc/psim/ChangeLog

@@ -1,3 +1,13 @@
+2009-12-01	Till Straumann <strauman@slac.stanford.edu>
+
+	* Makefile.am, start/start.S: Added AltiVec support
+	(only effective if user modifies psim.cfg: CPU_CFLAGS
+	choosing a CPU architecture with AltiVec or directly
+	adding -maltivec, -mabi=altivec).
+
+	* start/start.S: removed '.file' statement which 
+	confused gdb.
+
 2009-11-15	Till Straumann <strauman@slac.stanford.edu>
 
 	* startup/bspstart.c: use normal get_ppc_cpu_type()

c/src/lib/libbsp/powerpc/psim/Makefile.am

@@ -78,7 +78,8 @@ libbsp_a_LIBADD = ../../../libcpu/@RTEMS_CPU@/shared/cpuIdent.rel \
     ../../../libcpu/@RTEMS_CPU@/@exceptions@/exc_bspsupport.rel \
     ../../../libcpu/@RTEMS_CPU@/@exceptions@/irq_bspsupport.rel \
     ../../../libcpu/@RTEMS_CPU@/mpc6xx/mmu.rel \
-    ../../../libcpu/@RTEMS_CPU@/mpc6xx/timer.rel
+    ../../../libcpu/@RTEMS_CPU@/mpc6xx/timer.rel \
+    ../../../libcpu/@RTEMS_CPU@/mpc6xx/altivec.rel
 
 include $(srcdir)/preinstall.am
 include $(top_srcdir)/../../../../automake/local.am

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

@@ -22,7 +22,6 @@
 #include <libcpu/io.h>
 #include "ppc-asm.h"
 
-	.file	"startsim.s"
 	.section ".got2","aw"
 	.align	2
 
@@ -98,6 +97,22 @@ _start:
 	mr	sp,r0			/* use user defined stack */
 
 .Lnostack:
+#ifdef __ALTIVEC__
+	/* enable altivec; this requires the ALTIVEC user
+	 * extension to be installed in the user extension
+	 * slot 0!
+	 */
+	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
 	/* set up initial stack frame */
 	addi	sp,sp,-4		/* make sure we don't overwrite debug mem */
 	/* align */