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/* debug-unit.h -- Simulation of Or1k debug unit
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Copyright (C) 2001 Chris Ziomkowski, chris@asics.ws
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Copyright (C) 2008 Embecosm Limited
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This program is commented throughout in a fashion suitable for processing
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with Doxygen. */
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#ifndef DEBUG_UNIT__H
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#define DEBUG_UNIT__H
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/*! The possible debug unit actions */
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enum debug_unit_action
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{
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DebugInstructionFetch = 1,
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DebugLoadAddress = 2,
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DebugStoreAddress = 3,
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DebugLoadData = 4,
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DebugStoreData = 5
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};
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/*! Enumeration of the various JTAG scan chains. Only those actually
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implemented are specified. */
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enum debug_scan_chain_ids
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{
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JTAG_CHAIN_GLOBAL = 0,
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JTAG_CHAIN_DEBUG_UNIT = 1,
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JTAG_CHAIN_TRACE = 3,
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JTAG_CHAIN_DEVELOPMENT = 4,
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JTAG_CHAIN_WISHBONE = 5,
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};
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/* Function prototypes for external use */
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extern void du_reset ();
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extern void set_stall_state (int state);
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extern int check_debug_unit (enum debug_unit_action action,
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unsigned long udata);
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extern int debug_get_register (oraddr_t address,
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uorreg_t *data);
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extern int debug_set_register (oraddr_t address,
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uorreg_t data);
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extern int debug_set_chain (enum debug_scan_chain_ids chain);
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extern int debug_ignore_exception (unsigned long except);
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extern void reg_debug_sec ();
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#endif /* DEBUG_UNIT__H */
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