109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
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/* This file is part of the program psim.
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Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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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, MA 02111-1307, USA.
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*/
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#ifndef _HW_TRACE_C_
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#define _HW_TRACE_C_
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#include "device_table.h"
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#include <stdarg.h>
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/* DEVICE
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trace - the properties of this dummy device specify trace options
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DESCRIPTION
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The properties of this device are used, during initialization, to
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specify the value various simulation trace options. The
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initialization can occure implicitly (during device tree init) or
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explicitly using this devices ioctl method.
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The actual options and their default values (for a given target)
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are defined in the file debug.
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This device is normally a child of the /openprom node.
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EXAMPLE
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The trace option dump-device-tree can be enabled by specifying the
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option:
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| -o '/openprom/trace/dump-device-tree 0x1'
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Alternativly the shorthand version:
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| -t dump-device-tree
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can be used. */
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static void
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hw_trace_init_data(device *me)
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{
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const device_property *prop = device_find_property(me, NULL);
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while (prop != NULL) {
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const char *name = prop->name;
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unsigned32 value = device_find_integer_property(me, name);
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trace_option(name, value);
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prop = device_next_property(prop);
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}
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}
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/* Hook to allow the (re) initialization of the trace options at any
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time */
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static int
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hw_trace_ioctl(device *me,
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cpu *processor,
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unsigned_word cia,
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device_ioctl_request request,
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va_list ap)
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{
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switch (request) {
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case device_ioctl_set_trace:
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hw_trace_init_data(me);
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break;
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default:
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device_error(me, "insupported ioctl request");
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break;
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}
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return 0;
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}
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static device_callbacks const hw_trace_callbacks = {
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{ NULL, hw_trace_init_data, }, /* init */
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{ NULL, }, /* address */
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{ NULL, }, /* IO */
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{ NULL, }, /* DMA */
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{ NULL, }, /* interrupt */
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{ NULL, }, /* unit */
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NULL, /* instance-create */
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hw_trace_ioctl,
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};
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const device_descriptor hw_trace_device_descriptor[] = {
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{ "trace", NULL, &hw_trace_callbacks },
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{ NULL },
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};
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#endif _HW_TRACE_C_
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