1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* Hardware event manager.
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB, the GNU debugger.
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, 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-base.h"
#include "sim-events.h"
/* The hw-events object is implemented using sim-events */
struct hw_event {
void *data;
struct hw *me;
hw_event_callback *callback;
sim_event *real;
struct hw_event_data *entry;
};
struct hw_event_data {
struct hw_event event;
struct hw_event_data *next;
struct hw_event_data **prev;
};
void
create_hw_event_data (struct hw *me)
{
/* NOP */
}
void
delete_hw_event_data (struct hw *me)
{
if (me->events_of_hw != NULL)
hw_abort (me, "stray events");
}
static void
delete_hw_event (struct hw *me,
struct hw_event **event)
{
struct hw_event_data *entry = (*event)->entry;
*(entry->prev) = entry->next;
entry->next->prev = entry->prev;
(*event) = NULL;
}
static void
create_hw_event (struct hw *me,
struct hw_event **event)
{
struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data);
entry->next = me->events_of_hw;
entry->prev = &me->events_of_hw;
me->events_of_hw->prev = &entry->next;
me->events_of_hw = entry;
(*event) = &entry->event;
}
/* Pass the H/W event onto the real callback */
static void
bounce_hw_event (SIM_DESC sd,
void *data)
{
/* save the data */
struct hw_event *event = (struct hw_event*)data;
struct hw *me = event->me;
void *event_data = event->data;
hw_event_callback *callback = event->callback;
hw_free (me, data);
event = NULL;
callback (me, event_data);
}
/* Map onto the event functions */
struct hw_event *
hw_event_queue_schedule (struct hw *me,
signed64 delta_time,
hw_event_callback *callback,
void *data)
{
struct hw_event *event;
create_hw_event (me, &event);
/* fill it in */
event->data = data;
event->callback = callback;
event->me = me;
event->real = sim_events_schedule (hw_system (me),
delta_time,
bounce_hw_event,
event);
return event;
}
void
hw_event_queue_deschedule (struct hw *me,
struct hw_event *event_to_remove)
{
/* remove it from the event queue */
sim_events_deschedule (hw_system (me),
event_to_remove->real);
delete_hw_event (me, &event_to_remove);
}
signed64
hw_event_queue_time (struct hw *me)
{
return sim_events_time (hw_system (me));
}
|
