microblaze: Move cpu/microblaze/* to arch/microblaze/cpu/*

[oweals/u-boot.git] / arch / microblaze / cpu / exception.c

diff --git a/arch/microblaze/cpu/exception.c b/arch/microblaze/cpu/exception.c
new file mode 100644 (file)
index 0000000..0365de3
--- /dev/null
+++ b/arch/microblaze/cpu/exception.c
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/asm.h>
+
+void _hw_exception_handler (void)
+{
+       int address = 0;
+       int state = 0;
+       /* loading address of exception EAR */
+       MFS (address, rear);
+       /* loading excetpion state register ESR */
+       MFS (state, resr);
+       printf ("Hardware exception at 0x%x address\n", address);
+       switch (state & 0x1f) { /* mask on exception cause */
+       case 0x1:
+               puts ("Unaligned data access exception\n");
+               break;
+       case 0x2:
+               puts ("Illegal op-code exception\n");
+               break;
+       case 0x3:
+               puts ("Instruction bus error exception\n");
+               break;
+       case 0x4:
+               puts ("Data bus error exception\n");
+               break;
+       case 0x5:
+               puts ("Divide by zero exception\n");
+               break;
+#ifdef MICROBLAZE_V5
+       case 0x1000:
+               puts ("Exception in delay slot\n");
+               break;
+#endif
+       default:
+               puts ("Undefined cause\n");
+               break;
+       }
+       printf ("Unaligned %sword access\n", ((state & 0x800) ? "" : "half"));
+       printf ("Unaligned %s access\n", ((state & 0x400) ? "store" : "load"));
+       printf ("Register R%x\n", (state & 0x3E) >> 5);
+       hang ();
+}
+
+#ifdef CONFIG_SYS_USR_EXCEP
+void _exception_handler (void)
+{
+       puts ("User vector_exception\n");
+       hang ();
+}
+#endif