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Intial commit.
Chris's intial work on the extenstions.
This commit is contained in:
Dhananjay Balan
committed by
Chris Johns
Chris Johns
parent
911e71038c
commit
56a70aec55
216
tools/gdb/python/classic.py
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216
tools/gdb/python/classic.py
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#
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# RTEMS Classic API Support
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# Copyright 2010 Chris Johns (chrisj@rtems.org)
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#
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# $Id$
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#
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import gdb
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import itertools
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import re
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import objects
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import threads
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class attribute:
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"""The Classic API attribute."""
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groups = {
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'none' : [],
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'all' : ['scope',
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'priority',
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'fpu',
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'semaphore-type',
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'semaphore-pri',
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'semaphore-pri-ceiling',
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'barrier',
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'task'],
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'task' : ['scope',
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'priority',
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'fpu',
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'task'],
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'semaphore' : ['scope',
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'priority',
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'semaphore-type',
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'semaphore-pri',
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'semaphore-pri-ceiling'],
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'barrier' : ['scope',
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'priority',
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'barrier']
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}
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masks = {
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'scope' : 0x00000002,
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'priority' : 0x00000004,
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'fpu' : 0x00000001,
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'semaphore-type' : 0x00000030,
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'semaphore-pri' : 0x00000040,
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'semaphore-pri-ceiling' : 0x00000080,
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'barrier' : 0x00000010,
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'task' : 0x00008000
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}
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fields = {
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'scope' : [(0x00000000, 'local'),
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(0x00000002, 'global')],
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'priority' : [(0x00000000, 'fifo'),
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(0x00000004, 'pri')],
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'fpu' : [(0x00000000, 'no-fpu'),
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(0x00000001, 'fpu')],
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'semaphore-type' : [(0x00000000, 'count-sema'),
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(0x00000010, 'bin-sema'),
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(0x00000020, 'simple-bin-sema')],
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'semaphore-pri' : [(0x00000000, 'no-inherit-pri'),
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(0x00000040, 'inherit-pri')],
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'semaphore-pri-ceiling' : [(0x00000000, 'no-pri-ceiling'),
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(0x00000080, 'pri-ceiling')],
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'barrier' : [(0x00000010, 'barrier-auto-release'),
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(0x00000000, 'barrier-manual-release')],
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'task' : [(0x00000000, 'app-task'),
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(0x00008000, 'sys-task')]
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}
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def __init__(self, attr, attrtype = 'none'):
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if attrtype not in self.groups:
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raise 'invalid attribute type'
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self.attrtype = attrtype
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self.attr = attr
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def to_string(self):
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s = '0x%08x,' % (self.attr)
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if self.attrtype != 'none':
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for m in self.groups[self.attrtype]:
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v = self.attr & self.masks[m]
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for f in self.fields[m]:
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if f[0] == v:
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s += f[1] + ','
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break
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return s[:-1]
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def test(self, mask, value):
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if self.attrtype != 'none' and \
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mask in self.groups[self.attrtype]:
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v = self.masks[mask] & self.attr
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for f in self.fields[mask]:
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if v == f[0] and value == f[1]:
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return True
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return False
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class attribute_printer:
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def __init__(self, attr):
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self.attr = attr
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def to_string(self):
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return gdb.Value(self.attr.to_string())
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class semaphore_printer:
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"""Print a Semaphore_Control object. Print using the struct display hint
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and an iterator."""
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class iterator:
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"""Use an iterator for each field expanded from the id so GDB output
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is formatted correctly."""
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def __init__(self, semaphore):
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self.semaphore = semaphore
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self.count = 0
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def __iter__(self):
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return self
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def next(self):
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self.count += 1
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if self.count == 1:
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return self.semaphore['Object']
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elif self.count == 2:
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attr = attribute(self.semaphore['attribute_set'],
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'semaphore')
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return attr.to_string()
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elif self.count == 3:
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return self.semaphore['Core_control']
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raise StopIteration
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def __init__(self, semaphore):
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self.semaphore = semaphore
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def to_string(self):
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return ''
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@staticmethod
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def key(i):
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if i == 0:
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return 'Object'
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elif i == 1:
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return 'attribute_set'
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elif i == 2:
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return 'Core_control'
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return 'bad'
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def children(self):
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counter = itertools.imap (self.key, itertools.count())
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return itertools.izip (counter, self.iterator(self.semaphore))
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def display_hint (self):
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return 'struct'
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class semaphore:
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"Print a classic semaphore."
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def __init__(self, id):
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self.id = id;
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self.object = objects.information.object(self.id).dereference()
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self.object_control = objects.control(self.object['Object'])
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self.attr = attribute(self.object['attribute_set'], 'semaphore')
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def show(self, from_tty):
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print ' Name:', self.object_control.name()
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print ' Attr:', self.attr.to_string()
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if self.attr.test('semaphore-type', 'bin-sema') or \
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self.attr.test('semaphore-type', 'simple-bin-sema'):
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core_mutex = self.object['Core_control']['mutex']
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locked = core_mutex['lock'] == 0
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if locked:
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s = 'locked'
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else:
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s = 'unlocked'
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print ' Lock:', s
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print ' Nesting:', core_mutex['nest_count']
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print ' Blocked:', core_mutex['blocked_count']
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print ' Holder:',
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holder = core_mutex['holder']
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if holder and locked:
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holder = threads.control(holder.dereference())
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print holder.brief()
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elif holder == 0 and locked:
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print 'locked but no holder'
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else:
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print 'unlocked'
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wait_queue = threads.queue(core_mutex['Wait_queue'])
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tasks = wait_queue.tasks()
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print ' Queue: len = %d, state = %s' % (len(tasks),
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wait_queue.state())
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for t in range(0, len(tasks)):
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print ' ', tasks[t].brief(), ' (%08x)' % (tasks[t].id())
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else:
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print 'semaphore'
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class task:
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"Print a classic tasks."
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def __init__(self, id):
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self.id = id;
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self.task = \
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threads.control(objects.information.object(self.id).dereference())
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def show(self, from_tty):
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print ' Name:', self.task.name()
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print ' State:', self.task.current_state()
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print ' Current:', self.task.current_priority()
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print ' Real:', self.task.real_priority()
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print ' Suspends:', self.task.suspends()
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print ' Post Ext:', self.task.post_task_switch_ext()
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print ' Preempt:', self.task.preemptible()
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print ' T Budget:', self.task.cpu_time_budget()
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wait_info = self.task.wait_info()
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