2007-09-13 Joel Sherrill <joel.sherrill@OARcorp.com>

* configure.ac, startup/bspstart.c: Add BSP_DIRTY_MEMORY option.

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

@@ -1,3 +1,7 @@
+2007-09-13	Joel Sherrill <joel.sherrill@OARcorp.com>
+
+	* configure.ac, startup/bspstart.c: Add BSP_DIRTY_MEMORY option.
+
 2007-09-12	Joel Sherrill <joel.sherrill@OARcorp.com>
 
 	PR 1257/bsps

c/src/lib/libbsp/powerpc/psim/configure.ac

@@ -29,6 +29,12 @@ RTEMS_BSPOPTS_HELP([PPC_VECTOR_FILE_BASE],
 [This defines the base address of the exception table.
  NOTE: Vectors are actually at 0xFFF00000 but file starts at offset.])
 
+RTEMS_BSPOPTS_SET([BSP_DIRTY_MEMORY],[*],[0])
+RTEMS_BSPOPTS_HELP([BSP_DIRTY_MEMORY],
+[If defined, then PSIM will put a non-zero pattern into the RTEMS
+ Workspace and C program heap.  This should assist in finding
+ code that assumes memory starts set to zero.])
+
 # Explicitly list all Makefiles here
 AC_CONFIG_FILES([Makefile])
 

c/src/lib/libbsp/powerpc/psim/startup/bspstart.c

@@ -186,6 +186,11 @@ void bsp_start( void )
   }
 
   BSP_Configuration.work_space_start = work_space_start;
+  #if defined(BSP_DIRTY_MEMORY)
+  {
+    memset(&end, 0xCF,  (unsigned char *)&RAM_END - (unsigned char *)&end );
+  }
+  #endif
 
   /*
    * Initialize the interrupt related settings