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#
# RTEMS Pretty Printers
# Copyright 2010 Chris Johns (chrisj@rtems.org)
#
# $Id$
#
import gdb
import re
import objects
import threads
import classic
# ToDo: Move every printing out
import supercore_printer
import classic_printer
nesting = 0
def type_from_value(val):
type = val.type;
# If it points to a reference, get the reference.
if type.code == gdb.TYPE_CODE_REF:
type = type.target ()
# Get the unqualified type
return type.unqualified ()
def register_rtems_printers (obj):
"Register RTEMS pretty-printers with objfile Obj."
if obj == None:
obj = gdb
obj.pretty_printers.append (lookup_function)
def lookup_function (val):
"Look-up and return a pretty-printer that can print val."
global nesting
typename = str(type_from_value(val))
for function in pp_dict:
if function.search (typename):
nesting += 1
result = pp_dict[function] (val)
nesting -= 1
if nesting == 0:
objects.information.invalidate()
return result
# Cannot find a pretty printer. Return None.
return None
def build_rtems_dict():
pp_dict[re.compile('^rtems_id$')] = lambda val: supercore_printer.id(val)
pp_dict[re.compile('^Objects_Id$')] = lambda val: supercore_printer.id(val)
pp_dict[re.compile('^Objects_Name$')] = lambda val: supercore_printer.name(val)
pp_dict[re.compile('^Objects_Control$')] = lambda val: supercore_printer.control(val)
pp_dict[re.compile('^States_Control$')] = lambda val: supercore_printer.state(val)
pp_dict[re.compile('^rtems_attribute$')] = lambda val: classic_printer.attribute(val)
pp_dict[re.compile('^Semaphore_Control$')] = lambda val: classic_printer.semaphore(val)
class rtems(gdb.Command):
"""Prefix command for RTEMS."""
def __init__(self):
super(rtems, self).__init__('rtems',
gdb.COMMAND_STATUS,
gdb.COMPLETE_NONE,
True)
class rtems_object(gdb.Command):
"""Object sub-command for RTEMS"""
objects = {
'classic/semaphores': lambda obj: classic.semaphore(obj),
'classic/tasks': lambda obj: classic.task(obj),
'classic/message_queues': lambda obj: classic.message_queue(obj),
'classic/timers' : lambda obj: classic.timer(obj),
'classic/partitions' : lambda obj: classic.partition(obj),
'classic/regions' : lambda obj: classic.region(obj),
'classic/barriers' : lambda obj: classic.barrier(obj)
}
def __init__(self):
self.__doc__ = 'Display the RTEMS object given a numeric ID (Or a reference to rtems_object).'
super(rtems_object, self).__init__('rtems object',
gdb.COMMAND_STATUS)
def invoke(self, arg, from_tty):
for num in arg.split():
try:
val = gdb.parse_and_eval(num)
num = int(val)
except:
print 'error: "%s" is not a number' % (num)
return
id = objects.ident(num)
if not id.valid():
print 'Invalid object id'
return
print 'API:%s Class:%s Node:%d Index:%d Id:%08X' % \
(id.api(), id._class(), id.node(), id.index(), id.value())
objectname = id.api() + '/' + id._class()
obj = objects.information.object(id).dereference()
if objectname in self.objects:
object = self.objects[objectname](obj)
object.show(from_tty)
objects.information.invalidate()
class rtems_semaphore(gdb.Command):
'''Semaphore subcommand for rtems'''
api = 'classic'
_class = 'semaphores'
def __init__(self):
self.__doc__ = 'Display the RTEMS semaphores by index'
super(rtems_semaphore, self).__init__('rtems semaphore',
gdb.COMMAND_STATUS)
def invoke(self, arg, from_tty):
for val in arg.split():
try:
index = int(val)
except ValueError:
print "error: %s is not an index" % (val)
return
obj = objects.information.object_return( self.api,
self._class,
int(index)).dereference()
instance = classic.semaphore(obj)
instance.show(from_tty)
objects.information.invalidate()
class rtems_task(gdb.Command):
'''tasks subcommand for rtems'''
api = 'classic'
_class = 'tasks'
def __init__(self):
self.__doc__ = 'Display the RTEMS tasks by index(s)'
super(rtems_task,self).__init__('rtems task', gdb.COMMAND_STATUS)
def invoke(self, arg, from_tty):
for val in arg.split():
try:
index = int(val)
except ValueError:
print "error: %s is not an index" % (val)
return
try:
obj = objects.information.object_return(self.api,
self._class,
index).dereference()
except IndexError:
print "error: index %s is invalid" % (index)
return
instance = classic.task(obj)
instance.show(from_tty)
objects.information.invalidate()
#
# Main
#
pp_dict = {}
build_rtems_dict()
gdb.pretty_printers = []
gdb.pretty_printers.append (lookup_function)
rtems()
rtems_object()
rtems_semaphore()
rtems_task()
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