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/* This file is part of the program psim.
Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
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 "sim-main.h"
#include "hw-device.h"
#include "hw-properties.h"
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
/* Address methods */
const hw_unit *
hw_unit_address (struct hw *me)
{
return &me->unit_address_of_hw;
}
/* IOCTL: */
int
hw_ioctl (struct hw *me,
hw_ioctl_request request,
...)
{
int status;
va_list ap;
va_start(ap, request);
status = me->to_ioctl (me, request, ap);
va_end(ap);
return status;
}
/* Mechanism for associating allocated memory regions to a device.
When a device is deleted any remaining memory regions are also
reclaimed.
FIXME: Perhaphs this can be generalized, perhaphs it should not
be. */
struct hw_alloc_data {
void *alloc;
int zalloc_p;
struct hw_alloc_data *next;
};
void *
hw_zalloc (struct hw *me, unsigned long size)
{
struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
memory->alloc = zalloc (size);
memory->zalloc_p = 1;
memory->next = me->alloc_of_hw;
me->alloc_of_hw = memory;
return memory->alloc;
}
void *
hw_malloc (struct hw *me, unsigned long size)
{
struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
memory->alloc = zalloc (size);
memory->zalloc_p = 0;
memory->next = me->alloc_of_hw;
me->alloc_of_hw = memory;
return memory->alloc;
}
void
hw_free (struct hw *me,
void *alloc)
{
struct hw_alloc_data **memory;
for (memory = &me->alloc_of_hw;
*memory != NULL;
memory = &(*memory)->next)
{
if ((*memory)->alloc == alloc)
{
struct hw_alloc_data *die = (*memory);
(*memory) = die->next;
if (die->zalloc_p)
zfree (die->alloc);
else
free (die->alloc);
zfree (die);
return;
}
}
hw_abort (me, "free of memory not belonging to a device");
}
void
hw_free_all (struct hw *me)
{
while (me->alloc_of_hw != NULL)
{
hw_free (me, me->alloc_of_hw->alloc);
}
}
char *
hw_strdup (struct hw *me, const char *str)
{
if (str != NULL)
{
char *dup = hw_zalloc (me, strlen (str) + 1);
strcpy (dup, str);
return dup;
}
else
{
return NULL;
}
}
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