1 | # |
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2 | # RTEMS Tools Project (http://www.rtems.org/) |
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3 | # Copyright 2013-2014 Chris Johns (chrisj@rtems.org) |
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4 | # All rights reserved. |
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5 | # |
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6 | # This file is part of the RTEMS Tools package in 'rtems-tools'. |
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7 | # |
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8 | # Redistribution and use in source and binary forms, with or without |
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9 | # modification, are permitted provided that the following conditions are met: |
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10 | # |
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11 | # 1. Redistributions of source code must retain the above copyright notice, |
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12 | # this list of conditions and the following disclaimer. |
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13 | # |
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14 | # 2. Redistributions in binary form must reproduce the above copyright notice, |
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15 | # this list of conditions and the following disclaimer in the documentation |
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16 | # and/or other materials provided with the distribution. |
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17 | # |
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18 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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21 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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22 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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23 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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24 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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25 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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26 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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27 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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28 | # POSSIBILITY OF SUCH DAMAGE. |
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29 | # |
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30 | |
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31 | # |
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32 | # RTEMS Testing GDB Interface |
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33 | # |
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34 | |
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35 | import os |
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36 | import Queue |
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37 | import sys |
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38 | import termios |
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39 | import threading |
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40 | |
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41 | from rtemstoolkit import error |
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42 | from rtemstoolkit import execute |
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43 | from rtemstoolkit import options |
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44 | from rtemstoolkit import path |
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45 | |
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46 | import console |
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47 | import pygdb |
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48 | |
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49 | # |
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50 | # The MI parser needs a global lock. It has global objects. |
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51 | # |
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52 | mi_lock = threading.Lock() |
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53 | |
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54 | class gdb(object): |
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55 | '''RTEMS Testing GDB base.''' |
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56 | |
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57 | def __init__(self, bsp_arch, bsp, trace = False, mi_trace = False): |
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58 | self.trace = trace |
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59 | self.mi_trace = mi_trace |
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60 | self.lock_trace = False |
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61 | self.lock = threading.RLock() |
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62 | self.script = None |
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63 | self.script_line = 0 |
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64 | self.bsp = bsp |
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65 | self.bsp_arch = bsp_arch |
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66 | self.output = None |
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67 | self.gdb_console = None |
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68 | self.input = Queue.Queue() |
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69 | self.commands = Queue.Queue() |
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70 | self.process = None |
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71 | self.state = {} |
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72 | self.running = False |
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73 | self.breakpoints = {} |
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74 | self.output = None |
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75 | self.output_buffer = '' |
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76 | self.lc = 0 |
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77 | |
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78 | def _lock(self, msg): |
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79 | if self.lock_trace: |
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80 | print '|[ LOCK:%s ]|' % (msg) |
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81 | self.lock.acquire() |
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82 | |
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83 | def _unlock(self, msg): |
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84 | if self.lock_trace: |
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85 | print '|] UNLOCK:%s [|' % (msg) |
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86 | self.lock.release() |
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87 | |
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88 | def _mi_lock(self): |
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89 | mi_lock.acquire() |
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90 | |
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91 | def _mi_unlock(self): |
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92 | mi_lock.release() |
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93 | |
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94 | def _put(self, text): |
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95 | if self.trace: |
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96 | print ')))', text |
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97 | self.commands.put(text) |
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98 | |
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99 | def _input_commands(self): |
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100 | if self.commands.empty(): |
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101 | return False |
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102 | try: |
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103 | if self.trace: |
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104 | print '... input empty ', self.input.empty() |
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105 | if self.input.empty(): |
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106 | line = self.commands.get(block = False) |
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107 | if self.trace: |
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108 | print '+++', line |
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109 | self.input.put(line) |
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110 | except: |
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111 | pass |
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112 | return True |
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113 | |
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114 | def _reader(self, line): |
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115 | self._lock('_reader') |
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116 | if self.trace: |
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117 | print '<<<', line |
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118 | try: |
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119 | self.lc += 1 |
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120 | if line.startswith('(gdb)'): |
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121 | if self.trace: |
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122 | print '^^^ (gdb)' |
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123 | if not self._input_commands(): |
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124 | self.gdb_expect() |
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125 | self._input_commands() |
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126 | else: |
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127 | self.gdb_parse(line) |
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128 | finally: |
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129 | self._unlock('_reader') |
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130 | |
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131 | def _writer(self): |
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132 | try: |
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133 | try: |
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134 | self._lock('_open') |
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135 | try: |
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136 | if self.process is None: |
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137 | return None |
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138 | finally: |
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139 | self._unlock('_open') |
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140 | line = self.input.get(timeout = 0.5) |
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141 | if self.trace: |
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142 | print '>>> input: queue=%d' % (self.input.qsize()), line |
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143 | except Queue.Empty: |
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144 | return True |
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145 | if line is None: |
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146 | return None |
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147 | return line + os.linesep |
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148 | except: |
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149 | if self.trace: |
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150 | print 'writer exception' |
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151 | pass |
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152 | if self.trace: |
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153 | print 'writer closing' |
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154 | return False |
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155 | |
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156 | def _timeout(self): |
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157 | self._lock('_timeout') |
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158 | try: |
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159 | if self.output: |
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160 | self.output('*** TIMEOUT TIMEOUT') |
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161 | self._gdb_quit(backtrace = True) |
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162 | finally: |
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163 | self._unlock('_timeout') |
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164 | |
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165 | def _cleanup(self, proc): |
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166 | self._lock('_cleanup') |
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167 | try: |
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168 | self._put(None) |
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169 | finally: |
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170 | self._unlock('_cleanup') |
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171 | |
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172 | def _gdb_quit(self, backtrace = False): |
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173 | self._lock('_gdb_quit') |
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174 | try: |
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175 | self._put('-exec-interrupt') |
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176 | if backtrace: |
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177 | self._put('bt') |
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178 | self._put('quit') |
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179 | self._put('None') |
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180 | if self.script: |
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181 | self.script_line = len(self.script) |
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182 | finally: |
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183 | self._unlock('_gdb_quit') |
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184 | |
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185 | def open(self, command, executable, |
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186 | output, gdb_console, script = None, tty = None, |
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187 | timeout = 300): |
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188 | self._lock('_open') |
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189 | try: |
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190 | cmds = execute.arg_list(command) + ['-i=mi', |
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191 | '--nx', |
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192 | '--quiet'] |
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193 | if tty: |
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194 | cmds += ['--tty=%s' % tty] |
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195 | if executable: |
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196 | cmds += [executable] |
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197 | self.output = output |
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198 | self.gdb_console = gdb_console |
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199 | self.script = script |
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200 | self.running = False |
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201 | self.process = execute.execute(output = self._reader, |
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202 | input = self._writer, |
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203 | cleanup = self._cleanup) |
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204 | finally: |
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205 | self._unlock('_open') |
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206 | try: |
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207 | self.gdb_console('gdb: %s' % (' '.join(cmds))) |
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208 | ec, proc = self.process.open(cmds, timeout = (timeout, self._timeout)) |
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209 | if self.trace: |
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210 | print 'gdb done', ec |
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211 | if ec > 0: |
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212 | raise error.general('gdb exec: %s' % (os.strerror(ec))) |
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213 | except: |
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214 | raise |
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215 | self._lock('_open') |
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216 | try: |
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217 | self.process = None |
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218 | finally: |
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219 | self._unlock('_open') |
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220 | |
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221 | def gdb_expect(self): |
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222 | if self.trace: |
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223 | print '}}} gdb-expect' |
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224 | if self.process and not self.running and self.script is not None: |
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225 | if self.script_line == len(self.script): |
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226 | self._put(None) |
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227 | else: |
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228 | if self.script_line == 0: |
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229 | self._put('-gdb-set confirm no') |
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230 | self._put('-data-list-register-names') |
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231 | line = self.script[self.script_line] |
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232 | self.script_line += 1 |
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233 | self._put(line) |
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234 | else: |
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235 | self._put(line) |
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236 | |
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237 | def gdb_parse(self, lines): |
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238 | try: |
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239 | self._mi_lock() |
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240 | try: |
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241 | if self.mi_trace: |
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242 | print 'mi-data:', lines |
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243 | rec = pygdb.mi_parser.process(lines) |
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244 | finally: |
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245 | self._mi_unlock() |
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246 | if self.mi_trace: |
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247 | print 'mi-rec:', rec |
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248 | if rec.record_type == 'result': |
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249 | if rec.type == 'result': |
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250 | if rec.class_ == 'error': |
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251 | self._gdb_quit() |
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252 | elif 'register_names' in dir(rec.result): |
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253 | self.register_names = rec.result.register_names |
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254 | elif 'register_values' in dir(rec.result): |
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255 | self.register_values = rec.result.register_values |
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256 | elif rec.type == 'exec': |
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257 | if rec.class_ == 'running': |
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258 | if self.trace: |
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259 | print '*** running' |
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260 | self._put('') |
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261 | self.running = True |
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262 | elif rec.class_ == 'stopped': |
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263 | if self.trace: |
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264 | print '*** stopped' |
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265 | self.running = False |
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266 | #self._put('-data-list-register-values') |
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267 | elif rec.type == 'breakpoint': |
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268 | if rec.class_ == 'breakpoint-created': |
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269 | self.breakpoints[rec.result.bkpt.number] = rec.result.bkpt |
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270 | elif rec.class_ == 'breakpoint-modified': |
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271 | self.breakpoints[rec.result.bkpt.number] = rec.result.bkpt |
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272 | elif rec.class_ == 'breakpoint-deleted': |
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273 | if rec.result.id in self.breakpoints: |
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274 | del self.breakpoints[rec.result.id] |
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275 | elif rec.record_type == 'error': |
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276 | self._gdb_quit() |
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277 | elif rec.record_type == 'stream': |
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278 | if rec.type == 'console' or rec.type == 'log': |
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279 | for line in rec.value.splitlines(): |
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280 | self.gdb_console(line) |
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281 | if rec.type == 'target': |
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282 | self.output_buffer += rec.value |
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283 | last_lf = self.output_buffer.rfind('\n') |
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284 | if last_lf >= 0: |
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285 | lines = self.output_buffer[:last_lf] |
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286 | if self.trace: |
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287 | print '/// console output' |
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288 | for line in lines.splitlines(): |
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289 | self.output(line) |
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290 | self.output_buffer = self.output_buffer[last_lf + 1:] |
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291 | except: |
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292 | if self.trace: |
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293 | print '/// console output' |
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294 | for line in lines.splitlines(): |
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295 | self.output(line) |
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296 | |
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297 | if __name__ == "__main__": |
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298 | stdtty = console.save() |
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299 | try: |
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300 | def output(text): |
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301 | print ']', text |
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302 | def gdb_console(text): |
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303 | print '>', text |
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304 | script = ['target sim'] |
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305 | if len(sys.argv) > 1: |
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306 | executable = sys.argv[1] |
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307 | script += ['load', |
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308 | 'run', |
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309 | 'info reg', |
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310 | '-stack-list-frames', |
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311 | '-stack-list-arguments --all-values'] |
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312 | else: |
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313 | executable = None |
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314 | script += ['quit'] |
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315 | g = gdb('sparc', 'sis', mi_trace = True) |
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316 | g.open('sparc-rtems4.11-gdb', executable, output, gdb_console, script) |
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317 | except: |
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318 | console.restore(stdtty) |
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319 | raise |
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320 | finally: |
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321 | console.restore(stdtty) |
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