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753eb949b3
- Add timing for the locks to aid performance profiling - Remove fetching registers as the MI parser is slow on pyton2 Updates #3864
320 lines
11 KiB
Python
320 lines
11 KiB
Python
#
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# RTEMS Tools Project (http://www.rtems.org/)
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# Copyright 2013,2014,2020 Chris Johns (chrisj@rtems.org)
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# All rights reserved.
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#
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# This file is part of the RTEMS Tools package in 'rtems-tools'.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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#
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# RTEMS Testing GDB Interface
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#
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from __future__ import print_function
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import datetime
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import os
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try:
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import Queue
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queue = Queue
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except ImportError:
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import queue
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import sys
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import threading
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from rtemstoolkit import error
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from rtemstoolkit import execute
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from rtemstoolkit import options
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from rtemstoolkit import path
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import console
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import pygdb
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class gdb(object):
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'''RTEMS Testing GDB base.'''
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def __init__(self, bsp_arch, bsp, trace = False, mi_trace = False):
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self.session = pygdb.mi_parser.session()
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self.trace = trace
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self.mi_trace = mi_trace
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self.lock_trace = False
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self.lock_locked = None
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self.lock = threading.RLock()
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self.script = None
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self.script_line = 0
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self.bsp = bsp
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self.bsp_arch = bsp_arch
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self.output = None
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self.gdb_console = None
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self.input = queue.Queue()
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self.commands = queue.Queue()
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self.process = None
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self.state = {}
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self.running = False
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self.breakpoints = {}
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self.output = None
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self.output_buffer = ''
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self.lc = 0
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def _lock(self, msg):
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if self.lock_trace:
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print('|[ LOCK:%s ]|' % (msg))
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self.lock_locked = datetime.datetime.now()
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self.lock.acquire()
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def _unlock(self, msg):
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if self.lock_trace:
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period = datetime.datetime.now() - self.lock_locked
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print('|] UNLOCK:%s [| : %s' % (msg, period))
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self.lock.release()
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def _put(self, text):
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if self.trace:
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print(')))', text)
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self.commands.put(text)
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def _input_commands(self):
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if self.commands.empty():
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return False
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try:
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if self.trace:
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print('... input empty ', self.input.empty())
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if self.input.empty():
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line = self.commands.get(block = False)
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if self.trace:
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print('+++', line)
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self.input.put(line)
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except:
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pass
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return True
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def _reader(self, line):
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self._lock('_reader')
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if self.trace:
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print('<<<', line)
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try:
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self.lc += 1
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if line.startswith('(gdb)'):
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if self.trace:
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print('^^^ (gdb)')
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if not self._input_commands():
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self.gdb_expect()
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self._input_commands()
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else:
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self.gdb_parse(line)
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finally:
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self._unlock('_reader')
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def _writer(self):
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try:
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try:
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self._lock('_writer')
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try:
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if self.process is None:
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return None
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finally:
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self._unlock('_writer')
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line = self.input.get(timeout = 0.5)
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if self.trace:
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print('>>> input: queue=%d' % (self.input.qsize()), line)
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except queue.Empty:
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return True
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if line is None:
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return None
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return line + os.linesep
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except:
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if self.trace:
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print('writer exception')
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pass
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if self.trace:
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print('writer closing')
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return False
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def _timeout(self):
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self._lock('_timeout')
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try:
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if self.output:
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self.output('*** TIMEOUT TIMEOUT')
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self._gdb_quit(backtrace = True)
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finally:
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self._unlock('_timeout')
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def _cleanup(self, proc):
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self._lock('_cleanup')
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try:
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self._put(None)
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finally:
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self._unlock('_cleanup')
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def _gdb_quit(self, backtrace = False):
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self._lock('_gdb_quit')
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try:
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self._put('-exec-interrupt')
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if backtrace:
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self._put('bt')
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self._put('quit')
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self._put('None')
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if self.script:
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self.script_line = len(self.script)
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finally:
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self._unlock('_gdb_quit')
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def open(self, command, executable,
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output, gdb_console, script = None, tty = None,
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timeout = 300):
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self._lock('_open')
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try:
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cmds = execute.arg_list(command) + ['-i=mi',
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'--nx',
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'--quiet']
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if tty:
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cmds += ['--tty=%s' % tty]
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if executable:
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cmds += [executable]
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self.output = output
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self.gdb_console = gdb_console
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self.script = script
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self.running = False
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self.process = execute.execute(output = self._reader,
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input = self._writer,
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cleanup = self._cleanup)
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finally:
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self._unlock('_open')
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self.gdb_console('gdb: %s' % (' '.join(cmds)))
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ec, proc = self.process.open(cmds, timeout = (timeout, self._timeout))
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if self.trace:
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print('gdb done', ec)
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if ec > 0:
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raise error.general('gdb exec: %s: %s' % (cmds[0], os.strerror(ec)))
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self._lock('_open')
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try:
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self.process = None
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finally:
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self._unlock('_open')
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def kill(self):
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self._lock('_open')
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try:
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if self.process:
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self.process.kill()
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self.process = None
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finally:
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self._unlock('_open')
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def gdb_expect(self):
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if self.trace:
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print('}}} gdb-expect')
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if self.process and not self.running and self.script is not None:
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if self.script_line == len(self.script):
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self._put(None)
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else:
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if self.script_line == 0:
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self._put('-gdb-set confirm no')
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line = self.script[self.script_line]
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self.script_line += 1
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self._put(line)
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def gdb_parse(self, lines):
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try:
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if self.mi_trace:
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print('mi-data:', lines)
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rec = self.session.process(lines)
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if self.mi_trace:
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print('mi-rec:', rec)
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if rec.record_type == 'result':
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if rec.type == 'result':
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if rec.class_ == 'error':
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self._gdb_quit()
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elif 'register_names' in dir(rec.result):
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self.register_names = rec.result.register_names
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elif 'register_values' in dir(rec.result):
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self.register_values = rec.result.register_values
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elif rec.type == 'exec':
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if rec.class_ == 'running':
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if self.trace:
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print('*** running')
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self._put('')
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self.running = True
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elif rec.class_ == 'stopped':
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if self.trace:
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print('*** stopped')
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self.running = False
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#self._put('-data-list-register-values')
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elif rec.type == 'breakpoint':
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if rec.class_ == 'breakpoint-created':
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self.breakpoints[rec.result.bkpt.number] = rec.result.bkpt
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elif rec.class_ == 'breakpoint-modified':
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self.breakpoints[rec.result.bkpt.number] = rec.result.bkpt
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elif rec.class_ == 'breakpoint-deleted':
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if rec.result.id in self.breakpoints:
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del self.breakpoints[rec.result.id]
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elif rec.record_type == 'error':
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self._gdb_quit()
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elif rec.record_type == 'stream':
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if rec.type == 'console' or rec.type == 'log':
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for line in rec.value.splitlines():
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self.gdb_console(line)
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if rec.type == 'target':
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self.output_buffer += rec.value
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last_lf = self.output_buffer.rfind('\n')
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if last_lf >= 0:
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lines = self.output_buffer[:last_lf]
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if self.trace:
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print('/// console output')
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for line in lines.splitlines():
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self.output(line)
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self.output_buffer = self.output_buffer[last_lf + 1:]
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except:
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if self.trace:
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print('/// exception: console output')
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for line in lines.splitlines():
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self.output(line)
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if __name__ == "__main__":
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stdtty = console.save()
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try:
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def output(text):
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print(']', text)
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def gdb_console(text):
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print('>', text)
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script = ['target sim']
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if len(sys.argv) > 1:
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executable = sys.argv[1]
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script += ['load',
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'run',
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'info reg',
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'-stack-list-frames',
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'-stack-list-arguments --all-values']
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else:
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executable = None
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script += ['quit']
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g = gdb('sparc', 'sis', mi_trace = True)
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g.open('sparc-rtems4.11-gdb', executable, output, gdb_console, script)
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except:
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console.restore(stdtty)
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raise
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finally:
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console.restore(stdtty)
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