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diff --git a/firmware/target/mips/system-mips.h b/firmware/target/mips/system-mips.h
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+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2022 Aidan MacDonald
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef SYSTEM_MIPS_H
+#define SYSTEM_MIPS_H
+
+#include <stdint.h>
+
+struct mips_exception_frame {
+ uint32_t gpr[29]; /* GPRs $1-$25, $28-$31 */
+ uint32_t lo;
+ uint32_t hi;
+ uint32_t c0_status;
+ uint32_t c0_epc;
+};
+
+void intr_handler(void);
+void exception_handler(void* frame, unsigned long epc);
+void cache_error_handler(void* frame, unsigned long epc);
+void tlb_refill_handler(void* frame, unsigned long epc);
+
+#endif /* SYSTEM_MIPS_H */