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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
#
# RTEMS Classic API Support
# Copyright 2010 Chris Johns (chrisj@rtems.org)
#
# $Id$
#
import gdb
import itertools
import re
import objects
import threads
class attribute:
"""The Classic API attribute."""
groups = {
'none' : [],
'all' : ['scope',
'priority',
'fpu',
'semaphore-type',
'semaphore-pri',
'semaphore-pri-ceiling',
'barrier',
'task'],
'task' : ['scope',
'priority',
'fpu',
'task'],
'semaphore' : ['scope',
'priority',
'semaphore-type',
'semaphore-pri',
'semaphore-pri-ceiling'],
'barrier' : ['scope',
'priority',
'barrier'],
'message_queue' : ['priority',
'scope']
}
masks = {
'scope' : 0x00000002,
'priority' : 0x00000004,
'fpu' : 0x00000001,
'semaphore-type' : 0x00000030,
'semaphore-pri' : 0x00000040,
'semaphore-pri-ceiling' : 0x00000080,
'barrier' : 0x00000010,
'task' : 0x00008000
}
fields = {
'scope' : [(0x00000000, 'local'),
(0x00000002, 'global')],
'priority' : [(0x00000000, 'fifo'),
(0x00000004, 'pri')],
'fpu' : [(0x00000000, 'no-fpu'),
(0x00000001, 'fpu')],
'semaphore-type' : [(0x00000000, 'count-sema'),
(0x00000010, 'bin-sema'),
(0x00000020, 'simple-bin-sema')],
'semaphore-pri' : [(0x00000000, 'no-inherit-pri'),
(0x00000040, 'inherit-pri')],
'semaphore-pri-ceiling' : [(0x00000000, 'no-pri-ceiling'),
(0x00000080, 'pri-ceiling')],
'barrier' : [(0x00000010, 'barrier-auto-release'),
(0x00000000, 'barrier-manual-release')],
'task' : [(0x00000000, 'app-task'),
(0x00008000, 'sys-task')]
}
def __init__(self, attr, attrtype = 'none'):
if attrtype not in self.groups:
raise 'invalid attribute type'
self.attrtype = attrtype
self.attr = attr
def to_string(self):
s = '0x%08x,' % (self.attr)
if self.attrtype != 'none':
for m in self.groups[self.attrtype]:
v = self.attr & self.masks[m]
for f in self.fields[m]:
if f[0] == v:
s += f[1] + ','
break
return s[:-1]
def test(self, mask, value):
if self.attrtype != 'none' and \
mask in self.groups[self.attrtype]:
v = self.masks[mask] & self.attr
for f in self.fields[mask]:
if v == f[0] and value == f[1]:
return True
return False
class attribute_printer:
def __init__(self, attr):
self.attr = attr
def to_string(self):
return gdb.Value(self.attr.to_string())
class semaphore_printer:
"""Print a Semaphore_Control object. Print using the struct display hint
and an iterator."""
class iterator:
"""Use an iterator for each field expanded from the id so GDB output
is formatted correctly."""
def __init__(self, semaphore):
self.semaphore = semaphore
self.count = 0
def __iter__(self):
return self
def next(self):
self.count += 1
if self.count == 1:
return self.semaphore['Object']
elif self.count == 2:
attr = attribute(self.semaphore['attribute_set'],
'semaphore')
return attr.to_string()
elif self.count == 3:
return self.semaphore['Core_control']
raise StopIteration
def __init__(self, semaphore):
self.semaphore = semaphore
def to_string(self):
return ''
@staticmethod
def key(i):
if i == 0:
return 'Object'
elif i == 1:
return 'attribute_set'
elif i == 2:
return 'Core_control'
return 'bad'
def children(self):
counter = itertools.imap (self.key, itertools.count())
return itertools.izip (counter, self.iterator(self.semaphore))
def display_hint (self):
return 'struct'
class semaphore:
"Print a classic semaphore."
def __init__(self, id):
self.id = id;
self.object = objects.information.object(self.id).dereference()
self.object_control = objects.control(self.object['Object'])
self.attr = attribute(self.object['attribute_set'], 'semaphore')
def show(self, from_tty):
print ' Name:', self.object_control.name()
print ' Attr:', self.attr.to_string()
if self.attr.test('semaphore-type', 'bin-sema') or \
self.attr.test('semaphore-type', 'simple-bin-sema'):
core_mutex = self.object['Core_control']['mutex']
locked = core_mutex['lock'] == 0
if locked:
s = 'locked'
else:
s = 'unlocked'
print ' Lock:', s
print ' Nesting:', core_mutex['nest_count']
print ' Blocked:', core_mutex['blocked_count']
print ' Holder:',
holder = core_mutex['holder']
if holder and locked:
holder = threads.control(holder.dereference())
print holder.brief()
elif holder == 0 and locked:
print 'locked but no holder'
else:
print 'unlocked'
wait_queue = threads.queue(core_mutex['Wait_queue'])
tasks = wait_queue.tasks()
print ' Queue: len = %d, state = %s' % (len(tasks),
wait_queue.state())
for t in range(0, len(tasks)):
print ' ', tasks[t].brief(), ' (%08x)' % (tasks[t].id())
else:
print 'semaphore'
class task:
"Print a classic tasks."
def __init__(self, id):
self.id = id;
self.task = \
threads.control(objects.information.object(self.id).dereference())
def show(self, from_tty):
print ' Name:', self.task.name()
print ' State:', self.task.current_state()
print ' Current:', self.task.current_priority()
print ' Real:', self.task.real_priority()
print ' Suspends:', self.task.suspends()
print ' Post Ext:', self.task.post_task_switch_ext()
print ' Preempt:', self.task.preemptible()
print ' T Budget:', self.task.cpu_time_budget()
wait_info = self.task.wait_info()
class message_queue:
"Print a classic messege queue"
def __init__(self,id):
self.id = id
self.object = objects.information.object(self.id).dereference()
self.object_control = objects.control(self.object['Object'])
self.attr = attribute(self.object['attribute_set'], \
'message_queue')
def show(self, from_tty):
print ' Name:', self.object_control.name()
print ' Attr:', self.attr.to_string()
|
