1/* Hardware memory allocator.
2   Copyright (C) 1998, 2007, 2008, 2009, 2010, 2011
3   Free Software Foundation, Inc.
4   Contributed by Cygnus Support.
5
6This file is part of GDB, the GNU debugger.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 3 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
21
22#include "hw-main.h"
23#include "hw-base.h"
24
25
26#ifdef HAVE_STDLIB_H
27#include <stdlib.h>
28#endif
29
30struct hw_alloc_data
31{
32  void *alloc;
33  struct hw_alloc_data *next;
34};
35
36void
37create_hw_alloc_data (struct hw *me)
38{
39  /* NULL */
40}
41
42void
43delete_hw_alloc_data (struct hw *me)
44{
45  while (me->alloc_of_hw != NULL)
46    {
47      hw_free (me, me->alloc_of_hw->alloc);
48    }
49}
50
51
52
53void *
54hw_zalloc (struct hw *me, unsigned long size)
55{
56  struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
57  memory->alloc = zalloc (size);
58  memory->next = me->alloc_of_hw;
59  me->alloc_of_hw = memory;
60  return memory->alloc;
61}
62
63void *
64hw_malloc (struct hw *me, unsigned long size)
65{
66  struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
67  memory->alloc = zalloc (size);
68  memory->next = me->alloc_of_hw;
69  me->alloc_of_hw = memory;
70  return memory->alloc;
71}
72
73void
74hw_free (struct hw *me,
75	 void *alloc)
76{
77  struct hw_alloc_data **memory;
78  for (memory = &me->alloc_of_hw;
79       *memory != NULL;
80       memory = &(*memory)->next)
81    {
82      if ((*memory)->alloc == alloc)
83	{
84	  struct hw_alloc_data *die = (*memory);
85	  (*memory) = die->next;
86	  free (die->alloc);
87	  free (die);
88	  return;
89	}
90    }
91  hw_abort (me, "free of memory not belonging to a device");
92}
93