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