1 | # |
---|
2 | # RTEMS Classic API Support |
---|
3 | # Copyright 2010 Chris Johns (chrisj@rtems.org) |
---|
4 | # |
---|
5 | # $Id$ |
---|
6 | # |
---|
7 | |
---|
8 | import gdb |
---|
9 | import itertools |
---|
10 | import re |
---|
11 | |
---|
12 | import objects |
---|
13 | import threads |
---|
14 | |
---|
15 | class attribute: |
---|
16 | """The Classic API attribute.""" |
---|
17 | |
---|
18 | groups = { |
---|
19 | 'none' : [], |
---|
20 | 'all' : ['scope', |
---|
21 | 'priority', |
---|
22 | 'fpu', |
---|
23 | 'semaphore-type', |
---|
24 | 'semaphore-pri', |
---|
25 | 'semaphore-pri-ceiling', |
---|
26 | 'barrier', |
---|
27 | 'task'], |
---|
28 | 'task' : ['scope', |
---|
29 | 'priority', |
---|
30 | 'fpu', |
---|
31 | 'task'], |
---|
32 | 'semaphore' : ['scope', |
---|
33 | 'priority', |
---|
34 | 'semaphore-type', |
---|
35 | 'semaphore-pri', |
---|
36 | 'semaphore-pri-ceiling'], |
---|
37 | 'barrier' : ['scope', |
---|
38 | 'priority', |
---|
39 | 'barrier'], |
---|
40 | 'message_queue' : ['priority', |
---|
41 | 'scope'] |
---|
42 | } |
---|
43 | |
---|
44 | masks = { |
---|
45 | 'scope' : 0x00000002, |
---|
46 | 'priority' : 0x00000004, |
---|
47 | 'fpu' : 0x00000001, |
---|
48 | 'semaphore-type' : 0x00000030, |
---|
49 | 'semaphore-pri' : 0x00000040, |
---|
50 | 'semaphore-pri-ceiling' : 0x00000080, |
---|
51 | 'barrier' : 0x00000010, |
---|
52 | 'task' : 0x00008000 |
---|
53 | } |
---|
54 | |
---|
55 | fields = { |
---|
56 | 'scope' : [(0x00000000, 'local'), |
---|
57 | (0x00000002, 'global')], |
---|
58 | 'priority' : [(0x00000000, 'fifo'), |
---|
59 | (0x00000004, 'pri')], |
---|
60 | 'fpu' : [(0x00000000, 'no-fpu'), |
---|
61 | (0x00000001, 'fpu')], |
---|
62 | 'semaphore-type' : [(0x00000000, 'count-sema'), |
---|
63 | (0x00000010, 'bin-sema'), |
---|
64 | (0x00000020, 'simple-bin-sema')], |
---|
65 | 'semaphore-pri' : [(0x00000000, 'no-inherit-pri'), |
---|
66 | (0x00000040, 'inherit-pri')], |
---|
67 | 'semaphore-pri-ceiling' : [(0x00000000, 'no-pri-ceiling'), |
---|
68 | (0x00000080, 'pri-ceiling')], |
---|
69 | 'barrier' : [(0x00000010, 'barrier-auto-release'), |
---|
70 | (0x00000000, 'barrier-manual-release')], |
---|
71 | 'task' : [(0x00000000, 'app-task'), |
---|
72 | (0x00008000, 'sys-task')] |
---|
73 | } |
---|
74 | |
---|
75 | def __init__(self, attr, attrtype = 'none'): |
---|
76 | if attrtype not in self.groups: |
---|
77 | raise 'invalid attribute type' |
---|
78 | self.attrtype = attrtype |
---|
79 | self.attr = attr |
---|
80 | |
---|
81 | def to_string(self): |
---|
82 | s = '0x%08x,' % (self.attr) |
---|
83 | if self.attrtype != 'none': |
---|
84 | for m in self.groups[self.attrtype]: |
---|
85 | v = self.attr & self.masks[m] |
---|
86 | for f in self.fields[m]: |
---|
87 | if f[0] == v: |
---|
88 | s += f[1] + ',' |
---|
89 | break |
---|
90 | return s[:-1] |
---|
91 | |
---|
92 | def test(self, mask, value): |
---|
93 | if self.attrtype != 'none' and \ |
---|
94 | mask in self.groups[self.attrtype]: |
---|
95 | v = self.masks[mask] & self.attr |
---|
96 | for f in self.fields[mask]: |
---|
97 | if v == f[0] and value == f[1]: |
---|
98 | return True |
---|
99 | return False |
---|
100 | |
---|
101 | class attribute_printer: |
---|
102 | |
---|
103 | def __init__(self, attr): |
---|
104 | self.attr = attribute(attr,'all') |
---|
105 | |
---|
106 | def to_string(self): |
---|
107 | return gdb.Value(self.attr.to_string()) |
---|
108 | |
---|
109 | class semaphore_printer: |
---|
110 | """Print a Semaphore_Control object. Print using the struct display hint |
---|
111 | and an iterator.""" |
---|
112 | |
---|
113 | class iterator: |
---|
114 | """Use an iterator for each field expanded from the id so GDB output |
---|
115 | is formatted correctly.""" |
---|
116 | |
---|
117 | def __init__(self, semaphore): |
---|
118 | self.semaphore = semaphore |
---|
119 | self.count = 0 |
---|
120 | |
---|
121 | def __iter__(self): |
---|
122 | return self |
---|
123 | |
---|
124 | def next(self): |
---|
125 | self.count += 1 |
---|
126 | if self.count == 1: |
---|
127 | return self.semaphore['Object'] |
---|
128 | elif self.count == 2: |
---|
129 | attr = attribute(self.semaphore['attribute_set'], |
---|
130 | 'semaphore') |
---|
131 | return attr.to_string() |
---|
132 | elif self.count == 3: |
---|
133 | return self.semaphore['Core_control'] |
---|
134 | raise StopIteration |
---|
135 | |
---|
136 | def __init__(self, semaphore): |
---|
137 | self.semaphore = semaphore |
---|
138 | |
---|
139 | def to_string(self): |
---|
140 | return '' |
---|
141 | |
---|
142 | @staticmethod |
---|
143 | def key(i): |
---|
144 | if i == 0: |
---|
145 | return 'Object' |
---|
146 | elif i == 1: |
---|
147 | return 'attribute_set' |
---|
148 | elif i == 2: |
---|
149 | return 'Core_control' |
---|
150 | return 'bad' |
---|
151 | |
---|
152 | def children(self): |
---|
153 | counter = itertools.imap (self.key, itertools.count()) |
---|
154 | return itertools.izip (counter, self.iterator(self.semaphore)) |
---|
155 | |
---|
156 | def display_hint (self): |
---|
157 | return 'struct' |
---|
158 | |
---|
159 | class semaphore: |
---|
160 | "Print a classic semaphore." |
---|
161 | |
---|
162 | def __init__(self, id): |
---|
163 | self.id = id; |
---|
164 | self.object = objects.information.object(self.id).dereference() |
---|
165 | self.object_control = objects.control(self.object['Object']) |
---|
166 | self.attr = attribute(self.object['attribute_set'], 'semaphore') |
---|
167 | |
---|
168 | def show(self, from_tty): |
---|
169 | print ' Name:', self.object_control.name() |
---|
170 | print ' Attr:', self.attr.to_string() |
---|
171 | if self.attr.test('semaphore-type', 'bin-sema') or \ |
---|
172 | self.attr.test('semaphore-type', 'simple-bin-sema'): |
---|
173 | core_mutex = self.object['Core_control']['mutex'] |
---|
174 | locked = core_mutex['lock'] == 0 |
---|
175 | if locked: |
---|
176 | s = 'locked' |
---|
177 | else: |
---|
178 | s = 'unlocked' |
---|
179 | print ' Lock:', s |
---|
180 | print ' Nesting:', core_mutex['nest_count'] |
---|
181 | print ' Blocked:', core_mutex['blocked_count'] |
---|
182 | print ' Holder:', |
---|
183 | holder = core_mutex['holder'] |
---|
184 | if holder and locked: |
---|
185 | holder = threads.control(holder.dereference()) |
---|
186 | print holder.brief() |
---|
187 | elif holder == 0 and locked: |
---|
188 | print 'locked but no holder' |
---|
189 | else: |
---|
190 | print 'unlocked' |
---|
191 | wait_queue = threads.queue(core_mutex['Wait_queue']) |
---|
192 | tasks = wait_queue.tasks() |
---|
193 | print ' Queue: len = %d, state = %s' % (len(tasks), |
---|
194 | wait_queue.state()) |
---|
195 | for t in range(0, len(tasks)): |
---|
196 | print ' ', tasks[t].brief(), ' (%08x)' % (tasks[t].id()) |
---|
197 | else: |
---|
198 | print 'semaphore' |
---|
199 | |
---|
200 | class task: |
---|
201 | "Print a classic tasks." |
---|
202 | |
---|
203 | def __init__(self, id): |
---|
204 | self.id = id; |
---|
205 | self.task = \ |
---|
206 | threads.control(objects.information.object(self.id).dereference()) |
---|
207 | |
---|
208 | def show(self, from_tty): |
---|
209 | print ' Name:', self.task.name() |
---|
210 | print ' State:', self.task.current_state() |
---|
211 | print ' Current:', self.task.current_priority() |
---|
212 | print ' Real:', self.task.real_priority() |
---|
213 | print ' Suspends:', self.task.suspends() |
---|
214 | print ' Post Ext:', self.task.post_task_switch_ext() |
---|
215 | print ' Preempt:', self.task.preemptible() |
---|
216 | print ' T Budget:', self.task.cpu_time_budget() |
---|
217 | wait_info = self.task.wait_info() |
---|
218 | |
---|
219 | class message_queue: |
---|
220 | "Print a classic messege queue" |
---|
221 | |
---|
222 | def __init__(self,id): |
---|
223 | self.id = id |
---|
224 | self.object = objects.information.object(self.id).dereference() |
---|
225 | self.object_control = objects.control(self.object['Object']) |
---|
226 | self.attr = attribute(self.object['attribute_set'], \ |
---|
227 | 'message_queue') |
---|
228 | |
---|
229 | def show(self, from_tty): |
---|
230 | print ' Name:', self.object_control.name() |
---|
231 | print ' Attr:', self.attr.to_string() |
---|
232 | |
---|
233 | |
---|