1 | # |
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2 | # Copyright (C) Lynn Tran, Jiachen Zhang 2018 |
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3 | # |
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4 | # utils-gdb.py -- |
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5 | # |
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6 | # Author : Lynn Tran |
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7 | # Created On : Mon Oct 1 22:06:09 2018 |
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8 | # Last Modified By : Peter A. Buhr |
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9 | # Last Modified On : Sat Jan 19 14:16:10 2019 |
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10 | # Update Count : 11 |
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11 | # |
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12 | |
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13 | """ |
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14 | To run this extension, the python name has to be as same as one of the loaded library |
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15 | Additionally, the file must exist in a folder which is in gdb's safe path |
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16 | """ |
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17 | import collections |
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18 | import gdb |
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19 | import re |
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20 | |
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21 | # set these signal handlers with some settings (nostop, noprint, pass) |
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22 | gdb.execute('handle SIGALRM nostop noprint pass') |
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23 | gdb.execute('handle SIGUSR1 nostop noprint pass') |
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24 | |
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25 | CfaTypes = collections.namedtuple('CfaTypes', 'cluster_ptr processor_ptr thread_ptr int_ptr thread_state') |
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26 | |
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27 | class Thread: |
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28 | tid = 0 |
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29 | cluster = None |
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30 | value = None |
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31 | |
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32 | def __init__(self, cluster, value): |
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33 | self.cluster = cluster |
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34 | self.value = value |
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35 | |
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36 | def is_system(self): |
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37 | return False |
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38 | |
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39 | # A named tuple representing information about a stack |
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40 | StackInfo = collections.namedtuple('StackInfo', 'sp fp pc') |
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41 | |
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42 | # A global variable to keep track of stack information as one switches from one |
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43 | # task to another task |
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44 | STACK = [] |
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45 | |
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46 | # A global variable to keep all system task name |
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47 | SysTask_Name = ["uLocalDebuggerReader", "uLocalDebugger", "uProcessorTask", "uBootTask", "uSystemTask", |
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48 | "uProcessorTask", "uPthread", "uProfiler"] |
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49 | |
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50 | not_supported_error_msg = "Not a supported command for this language" |
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51 | |
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52 | def is_cforall(): |
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53 | return True |
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54 | |
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55 | def get_cfa_types(): |
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56 | # GDB types for various structures/types in CFA |
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57 | return CfaTypes(cluster_ptr = gdb.lookup_type('struct cluster').pointer(), |
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58 | processor_ptr = gdb.lookup_type('struct processor').pointer(), |
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59 | thread_ptr = gdb.lookup_type('struct $thread').pointer(), |
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60 | int_ptr = gdb.lookup_type('int').pointer(), |
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61 | thread_state = gdb.lookup_type('enum coroutine_state')) |
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62 | |
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63 | def get_addr(addr): |
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64 | """ |
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65 | NOTE: sketchy solution to retrieve address. There is a better solution... |
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66 | @addr: str of an address that can be in a format 0xfffff <type of the object |
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67 | at this address> |
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68 | Return: str of just the address |
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69 | """ |
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70 | str_addr = str(addr) |
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71 | ending_addr_index = str_addr.find('<') |
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72 | if ending_addr_index == -1: |
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73 | return str(addr) |
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74 | return str_addr[:ending_addr_index].strip() |
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75 | |
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76 | def print_usage(obj): |
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77 | print(obj.__doc__) |
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78 | |
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79 | def parse(args): |
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80 | """ |
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81 | Split the argument list in string format, where each argument is separated |
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82 | by whitespace delimiter, to a list of arguments like argv |
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83 | @args: str of arguments |
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84 | Return: |
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85 | [] if args is an empty string |
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86 | list if args is not empty |
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87 | """ |
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88 | # parse the string format of arguments and return a list of arguments |
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89 | argv = args.split(' ') |
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90 | if len(argv) == 1 and argv[0] == '': |
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91 | return [] |
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92 | return argv |
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93 | |
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94 | def get_cluster_root(): |
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95 | """ |
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96 | Return: gdb.Value of globalClusters.root (is an address) |
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97 | """ |
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98 | cluster_root = gdb.parse_and_eval('_X11mainClusterPS7cluster_1') |
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99 | if cluster_root.address == 0x0: |
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100 | print('No clusters, program terminated') |
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101 | return cluster_root |
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102 | |
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103 | def lookup_cluster(name = None): |
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104 | """ |
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105 | Look up a cluster given its ID |
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106 | @name: str |
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107 | Return: gdb.Value |
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108 | """ |
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109 | if not is_cforall(): |
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110 | return None |
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111 | |
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112 | root = get_cluster_root() |
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113 | if root.address == 0x0: |
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114 | return None |
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115 | |
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116 | if not name: |
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117 | return root |
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118 | |
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119 | # lookup for the task associated with the id |
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120 | cluster = None |
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121 | curr = root |
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122 | while True: |
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123 | if curr['_X4namePKc_1'].string() == name: |
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124 | cluster = curr.address |
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125 | break |
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126 | curr = curr['_X4nodeS26__cluster____dbg_node_cltr_1']['_X4nextPS7cluster_1'] |
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127 | if curr == root or curr == 0x0: |
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128 | break |
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129 | |
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130 | if not cluster: |
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131 | print("Cannot find a cluster with the name: {}.".format(name)) |
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132 | return None |
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133 | |
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134 | return cluster |
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135 | |
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136 | def system_thread(thread): |
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137 | return False |
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138 | |
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139 | def adjust_stack(pc, fp, sp): |
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140 | # pop sp, fp, pc from global stack |
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141 | gdb.execute('set $pc = {}'.format(pc)) |
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142 | gdb.execute('set $rbp = {}'.format(fp)) |
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143 | gdb.execute('set $sp = {}'.format(sp)) |
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144 | |
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145 | ############################ COMMAND IMPLEMENTATION ######################### |
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146 | |
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147 | class Clusters(gdb.Command): |
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148 | """Cforall: Display currently known clusters |
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149 | Usage: |
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150 | info clusters : print out all the clusters |
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151 | """ |
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152 | |
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153 | def __init__(self): |
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154 | super(Clusters, self).__init__('info clusters', gdb.COMMAND_USER) |
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155 | |
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156 | def print_cluster(self, cluster_name, cluster_address): |
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157 | print('{:>20} {:>20}'.format(cluster_name, cluster_address)) |
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158 | |
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159 | #entry point from gdb |
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160 | def invoke(self, arg, from_tty): |
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161 | if not is_cforall(): |
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162 | return |
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163 | |
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164 | if arg: |
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165 | print("info clusters does not take arguments") |
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166 | print_usage(self) |
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167 | return |
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168 | |
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169 | cluster_root = get_cluster_root() |
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170 | if cluster_root.address == 0x0: |
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171 | return |
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172 | |
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173 | curr = cluster_root |
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174 | self.print_cluster('Name', 'Address') |
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175 | |
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176 | while True: |
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177 | self.print_cluster(curr['_X4namePKc_1'].string(), str(curr)) |
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178 | curr = curr['_X4nodeS26__cluster____dbg_node_cltr_1']['_X4nextPS7cluster_1'] |
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179 | if curr == cluster_root: |
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180 | break |
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181 | |
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182 | print("") |
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183 | |
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184 | ############ |
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185 | class Processors(gdb.Command): |
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186 | """Cforall: Display currently known processors |
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187 | Usage: |
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188 | info processors : print out all the processors in the Main Cluster |
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189 | info processors <cluster_name> : print out all processors in a given cluster |
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190 | """ |
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191 | |
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192 | def __init__(self): |
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193 | super(Processors, self).__init__('info processors', gdb.COMMAND_USER) |
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194 | |
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195 | def print_processor(self, name, status, pending, address): |
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196 | print('{:>20} {:>11} {:>13} {:>20}'.format(name, status, pending, address)) |
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197 | |
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198 | def iterate_procs(self, root, active): |
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199 | if root == 0x0: |
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200 | return |
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201 | |
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202 | cfa_t = get_cfa_types() |
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203 | curr = root |
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204 | |
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205 | while True: |
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206 | processor = curr |
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207 | should_stop = processor['_X12do_terminateVb_1'] |
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208 | stop_count = processor['_X10terminatedS9semaphore_1']['_X5counti_1'] |
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209 | if not should_stop: |
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210 | status = 'Active' if active else 'Idle' |
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211 | else: |
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212 | status_str = 'Last Thread' if stop_count >= 0 else 'Terminating' |
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213 | status = '{}({},{})'.format(status_str, should_stop, stop_count) |
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214 | |
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215 | self.print_processor(processor['_X4namePKc_1'].string(), |
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216 | status, str(processor['_X18pending_preemptionb_1']), str(processor) |
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217 | ) |
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218 | |
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219 | curr = curr['_X4nodeS28__processor____dbg_node_proc_1']['_X4nextPS9processor_1'] |
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220 | |
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221 | if curr == root or curr == 0x0: |
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222 | break |
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223 | |
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224 | #entry point from gdb |
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225 | def invoke(self, arg, from_tty): |
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226 | if not is_cforall(): |
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227 | return |
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228 | |
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229 | cluster = lookup_cluster(arg if arg else None) |
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230 | |
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231 | if not cluster: |
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232 | print("No Cluster matching arguments found") |
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233 | return |
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234 | |
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235 | cfa_t = get_cfa_types() |
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236 | print('Cluster: "{}"({})'.format(cluster['_X4namePKc_1'].string(), cluster.cast(cfa_t.cluster_ptr))) |
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237 | |
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238 | active_root = cluster.cast(cfa_t.cluster_ptr) \ |
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239 | ['_X5procsS8__dllist_S9processor__1'] \ |
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240 | ['_X4headPY15__TYPE_generic__1'] \ |
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241 | .cast(cfa_t.processor_ptr) |
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242 | |
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243 | idle_root = cluster.cast(cfa_t.cluster_ptr) \ |
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244 | ['_X5idlesS8__dllist_S9processor__1'] \ |
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245 | ['_X4headPY15__TYPE_generic__1'] \ |
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246 | .cast(cfa_t.processor_ptr) |
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247 | |
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248 | if idle_root != 0x0 or active_root != 0x0: |
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249 | self.print_processor('Name', 'Status', 'Pending Yield', 'Address') |
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250 | self.iterate_procs(active_root, True) |
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251 | self.iterate_procs(idle_root, False) |
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252 | else: |
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253 | print("No processors on cluster") |
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254 | |
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255 | print() |
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256 | |
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257 | ############ |
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258 | class Threads(gdb.Command): |
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259 | def __init__(self): |
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260 | # The first parameter of the line below is the name of the command. You |
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261 | # can call it 'uc++ task' |
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262 | super(Threads, self).__init__('info cfathreads', gdb.COMMAND_USER) |
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263 | |
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264 | def print_usage(self): |
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265 | print_usage(""" |
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266 | cfathread : print userCluster tasks, application tasks only |
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267 | cfathread all : print all clusters, all tasks |
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268 | cfathread <clusterName> : print cluster tasks, application tasks only |
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269 | """) |
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270 | |
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271 | def invoke(self, arg, from_tty): |
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272 | """ |
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273 | @arg: str |
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274 | @from_tty: bool |
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275 | """ |
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276 | if not is_cforall(): |
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277 | return |
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278 | |
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279 | argv = parse(arg) |
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280 | print(argv) |
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281 | if len(argv) == 0: |
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282 | cluster = lookup_cluster() |
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283 | if not cluster: |
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284 | print("Could not find Main Cluster") |
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285 | return |
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286 | |
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287 | # only tasks and main |
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288 | self.print_threads_by_cluster(cluster, False) |
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289 | |
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290 | elif len(argv) == 1: |
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291 | if argv[0] == 'help': |
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292 | self.print_usage() |
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293 | # print tasks |
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294 | elif argv[0] == 'all': |
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295 | self.print_all_threads() # all tasks, all clusters |
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296 | else: |
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297 | """ |
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298 | Print out all the tasks available in the specified cluster |
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299 | @cluster_name: str |
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300 | """ |
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301 | print("cfathread by name") |
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302 | cluster = lookup_cluster(argv[0]) |
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303 | if not cluster: |
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304 | return |
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305 | |
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306 | # all tasks, specified cluster |
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307 | self.print_threads_by_cluster(cluster, True) |
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308 | |
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309 | elif len(argv) == 2: |
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310 | # push task |
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311 | self.pushtask_by_id(argv[0], argv[1]) # by id, specified cluster |
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312 | else: |
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313 | print('Invalid arguments') |
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314 | self.print_usage() |
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315 | |
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316 | ############ |
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317 | class Thread(gdb.Command): |
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318 | def __init__(self): |
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319 | # The first parameter of the line below is the name of the command. You |
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320 | # can call it 'uc++ task' |
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321 | super(Threads, self).__init__('cfathread', gdb.COMMAND_USER) |
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322 | |
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323 | def print_usage(self): |
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324 | print_usage(""" |
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325 | cfathread : print userCluster tasks, application tasks only |
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326 | cfathread <clusterName> : print cluster tasks, application tasks only |
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327 | cfathread all : print all clusters, all tasks |
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328 | cfathread <id> : switch stack to thread id on userCluster |
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329 | cfathread 0x<address> : switch stack to thread on any cluster |
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330 | cfathread <id> <clusterName> : switch stack to thread on specified cluster |
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331 | """) |
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332 | |
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333 | ############################ AUXILIARY FUNCTIONS ######################### |
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334 | |
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335 | def print_formatted(self, marked, tid, name, state, address): |
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336 | print('{:>1} {:>4} {:>20} {:>10} {:>20}'.format('*' if marked else ' ', tid, name, state, address)) |
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337 | |
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338 | def print_thread(self, thread, tid, marked): |
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339 | cfa_t = get_cfa_types() |
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340 | self.print_formatted(marked, tid, thread['self_cor']['name'].string(), str(thread['state'].cast(cfa_t.thread_state)), str(thread)) |
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341 | |
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342 | def print_formatted_cluster(self, str_format, cluster_name, cluster_addr): |
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343 | print(str_format.format(cluster_name, cluster_addr)) |
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344 | |
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345 | def find_curr_thread(self): |
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346 | # btstr = gdb.execute('bt', to_string = True).splitlines() |
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347 | # if len(btstr) == 0: |
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348 | # print('error') |
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349 | # return None |
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350 | # return btstr[0].split('this=',1)[1].split(',')[0].split(')')[0] |
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351 | return None |
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352 | |
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353 | def print_tasks_by_cluster_all(self, cluster_address): |
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354 | """ |
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355 | Display a list of all info about all available tasks on a particular cluster |
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356 | @cluster_address: gdb.Value |
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357 | """ |
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358 | cluster_address = cluster_address.cast(uCPPTypes.ucluster_ptr) |
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359 | task_root = cluster_address['tasksOnCluster']['root'] |
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360 | |
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361 | if task_root == 0x0 or task_root.address == 0x0: |
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362 | print('There are no tasks for cluster at address: {}'.format(cluster_address)) |
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363 | return |
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364 | |
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365 | self.print_formatted_task('', 'Task Name', 'Address', 'State') |
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366 | curr = task_root |
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367 | task_id = 0 |
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368 | systask_id = -1 |
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369 | |
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370 | breakpoint_addr = self.find_curr_breakpoint_addr() |
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371 | if breakpoint_addr is None: |
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372 | return |
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373 | |
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374 | while True: |
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375 | global SysTask_Name |
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376 | if (curr['task_']['name'].string() in SysTask_Name): |
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377 | self.print_formatted_tasks(systask_id, breakpoint_addr, curr) |
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378 | systask_id -= 1 |
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379 | else: |
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380 | self.print_formatted_tasks(task_id, breakpoint_addr, curr) |
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381 | task_id += 1 |
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382 | |
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383 | curr = curr['next'].cast(uCPPTypes.uBaseTaskDL_ptr_type) |
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384 | if curr == task_root: |
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385 | break |
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386 | |
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387 | def print_tasks_by_cluster_address_all(self, cluster_address): |
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388 | """ |
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389 | Display a list of all info about all available tasks on a particular cluster |
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390 | @cluster_address: str |
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391 | """ |
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392 | # Iterate through a circular linked list of tasks and print out its |
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393 | # name along with address associated to each cluster |
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394 | |
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395 | # convert hex string to hex number |
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396 | try: |
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397 | hex_addr = int(cluster_address, 16) |
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398 | except: |
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399 | self.print_usage() |
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400 | return |
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401 | |
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402 | cluster_address = gdb.Value(hex_addr) |
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403 | if not self.print_tasks_by_cluster_all(cluster_address): |
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404 | return |
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405 | |
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406 | def threads_by_cluster(self, cluster): |
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407 | # Iterate through a circular linked list of threads and accumulate them in an array |
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408 | threads = [] |
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409 | |
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410 | cfa_t = get_cfa_types() |
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411 | root = cluster['_X7threadsS8__dllist_S7$thread__1']['_X4headPY15__TYPE_generic__1'].cast(cfa_t.thread_ptr) |
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412 | |
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413 | if root == 0x0 or root.address == 0x0: |
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414 | print('There are no tasks for cluster: {}'.format(cluster)) |
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415 | return threads |
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416 | |
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417 | curr = root |
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418 | tid = 0 |
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419 | sid = -1 |
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420 | |
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421 | while True: |
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422 | t = Thread(cluster, curr) |
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423 | if t.is_system(): |
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424 | t.tid = sid |
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425 | sid -= 1 |
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426 | else: |
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427 | t.tid = tid |
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428 | tid += 1 |
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429 | |
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430 | threads.append(t) |
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431 | |
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432 | curr = curr['node']['next'] |
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433 | if curr == root or curr == 0x0: |
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434 | break |
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435 | |
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436 | return threads |
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437 | |
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438 | def print_threads_by_cluster(self, cluster, print_system = False): |
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439 | """ |
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440 | Display a list of limited info about all available threads on a particular cluster |
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441 | @cluster: str |
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442 | @print_system: bool |
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443 | """ |
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444 | # Iterate through a circular linked list of tasks and print out its |
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445 | # name along with address associated to each cluster |
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446 | |
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447 | threads = self.threads_by_cluster(cluster) |
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448 | if not threads: |
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449 | return |
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450 | |
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451 | running_thread = self.find_curr_thread() |
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452 | if running_thread is None: |
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453 | print('Could not identify current thread') |
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454 | |
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455 | self.print_formatted(False, '', 'Name', 'State', 'Address') |
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456 | |
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457 | for t in threads: |
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458 | if not t.is_system() or print_system: |
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459 | self.print_thread(t.value, t.tid, tivalue == running_thread if running_thread else False) |
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460 | |
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461 | print() |
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462 | |
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463 | ############################ COMMAND FUNCTIONS ######################### |
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464 | |
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465 | def print_all_threads(self): |
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466 | """Iterate through each cluster, iterate through all tasks and print out info about all the tasks |
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467 | in those clusters""" |
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468 | uCPPTypes = None |
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469 | try: |
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470 | uCPPTypes = get_uCPP_types() |
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471 | except gdb.error: |
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472 | print(not_supported_error_msg) |
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473 | print(gdb.error) |
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474 | return |
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475 | |
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476 | cluster_root = get_cluster_root() |
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477 | if cluster_root.address == 0x0: |
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478 | return |
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479 | |
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480 | curr = cluster_root |
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481 | self.print_formatted_cluster(self.cluster_str_format, 'Cluster Name', 'Address') |
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482 | |
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483 | while True: |
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484 | addr = str(curr['cluster_'].reference_value())[1:] |
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485 | self.print_formatted_cluster(self.cluster_str_format, curr['cluster_']['name'].string(), addr) |
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486 | |
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487 | self.print_tasks_by_cluster_address_all(addr) |
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488 | curr = curr['next'].cast(uCPPTypes.uClusterDL_ptr_type) |
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489 | if curr == cluster_root: |
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490 | break |
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491 | |
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492 | def switchto(self, thread): |
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493 | """Change to a new task by switching to a different stack and manually |
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494 | adjusting sp, fp and pc |
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495 | @task_address: str |
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496 | 2 supported format: |
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497 | in hex format |
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498 | <hex_address>: literal hexadecimal address |
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499 | Ex: 0xffffff |
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500 | in name of the pointer to the task |
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501 | "task_name": pointer of the variable name of the cluster |
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502 | Ex: T* s -> task_name = s |
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503 | Return: gdb.value of the cluster's address |
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504 | """ |
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505 | # uCPPTypes = None |
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506 | # try: |
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507 | # uCPPTypes = get_uCPP_types() |
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508 | # except gdb.error: |
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509 | # print(not_supported_error_msg) |
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510 | # print(gdb.error) |
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511 | # return |
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512 | |
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513 | # # Task address has a format "task_address", which implies that it is the |
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514 | # # name of the variable, and it needs to be evaluated |
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515 | # if task_address.startswith('"') and task_address.endswith('"'): |
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516 | # task = gdb.parse_and_eval(task_address.replace('"', '')) |
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517 | # else: |
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518 | # # Task address format does not include the quotation marks, which implies |
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519 | # # that it is a hex address |
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520 | # # convert hex string to hex number |
---|
521 | # try: |
---|
522 | # hex_addr = int(task_address, 16) |
---|
523 | # except: |
---|
524 | # self.print_usage() |
---|
525 | # return |
---|
526 | # task_address = gdb.Value(hex_addr) |
---|
527 | # task = task_address.cast(uCPPTypes.uBaseTask_ptr_type) |
---|
528 | try: |
---|
529 | if not gdb.lookup_symbol('__cfactx_switch'): |
---|
530 | print('__cfactx_switch symbol is unavailable') |
---|
531 | return |
---|
532 | except: |
---|
533 | print('here 3') |
---|
534 | |
---|
535 | cfa_t = get_cfa_types() |
---|
536 | |
---|
537 | state = thread['state'].cast(cfa_t.thread_state) |
---|
538 | try: |
---|
539 | if state == gdb.parse_and_eval('Halted'): |
---|
540 | print('Cannot switch to a terminated thread') |
---|
541 | return |
---|
542 | |
---|
543 | if state == gdb.parse_and_eval('Start'): |
---|
544 | print('Cannjot switch to a thread not yet run') |
---|
545 | return |
---|
546 | except: |
---|
547 | print("here 2") |
---|
548 | return |
---|
549 | |
---|
550 | |
---|
551 | context = thread['context'] |
---|
552 | |
---|
553 | # lookup for sp,fp and uSwitch |
---|
554 | xsp = context['SP'] + 48 |
---|
555 | xfp = context['FP'] |
---|
556 | |
---|
557 | # convert string so we can strip out the address |
---|
558 | try: |
---|
559 | xpc = get_addr(gdb.parse_and_eval('__cfactx_switch').address + 28) |
---|
560 | except: |
---|
561 | print("here") |
---|
562 | return |
---|
563 | |
---|
564 | # must be at frame 0 to set pc register |
---|
565 | gdb.execute('select-frame 0') |
---|
566 | |
---|
567 | # push sp, fp, pc into a global stack |
---|
568 | global STACK |
---|
569 | sp = gdb.parse_and_eval('$sp') |
---|
570 | fp = gdb.parse_and_eval('$fp') |
---|
571 | pc = gdb.parse_and_eval('$pc') |
---|
572 | stack_info = StackInfo(sp = sp, fp = fp, pc = pc) |
---|
573 | STACK.append(stack_info) |
---|
574 | |
---|
575 | # update registers for new task |
---|
576 | print('switching to ') |
---|
577 | gdb.execute('set $rsp={}'.format(xsp)) |
---|
578 | gdb.execute('set $rbp={}'.format(xfp)) |
---|
579 | gdb.execute('set $pc={}'.format(xpc)) |
---|
580 | |
---|
581 | def find_matching_gdb_thread_id(): |
---|
582 | """ |
---|
583 | Parse the str from info thread to get the number |
---|
584 | """ |
---|
585 | info_thread_str = gdb.execute('info thread', to_string=True).splitlines() |
---|
586 | for thread_str in info_thread_str: |
---|
587 | if thread_str.find('this={}'.format(task)) != -1: |
---|
588 | thread_id_pattern = r'^\*?\s+(\d+)\s+Thread' |
---|
589 | # retrive gdb thread id |
---|
590 | return re.match(thread_id_pattern, thread_str).group(1) |
---|
591 | |
---|
592 | # check if the task is running or not |
---|
593 | if task_state == gdb.parse_and_eval('uBaseTask::Running'): |
---|
594 | # find the equivalent thread from info thread |
---|
595 | gdb_thread_id = find_matching_gdb_thread_id() |
---|
596 | if gdb_thread_id is None: |
---|
597 | print('cannot find the thread id to switch to') |
---|
598 | return |
---|
599 | # switch to that thread based using thread command |
---|
600 | gdb.execute('thread {}'.format(gdb_thread_id)) |
---|
601 | |
---|
602 | def switchto_id(self, tid, cluster): |
---|
603 | """ |
---|
604 | @cluster: cluster object |
---|
605 | @tid: int |
---|
606 | """ |
---|
607 | threads = self.threads_by_cluster( cluster ) |
---|
608 | |
---|
609 | for t in threads: |
---|
610 | if t.tid == tid: |
---|
611 | self.switchto(t.value) |
---|
612 | return |
---|
613 | |
---|
614 | print("Cound not find thread by id '{}'".format(tid)) |
---|
615 | |
---|
616 | def invoke(self, arg, from_tty): |
---|
617 | """ |
---|
618 | @arg: str |
---|
619 | @from_tty: bool |
---|
620 | """ |
---|
621 | if not is_cforall(): |
---|
622 | return |
---|
623 | |
---|
624 | argv = parse(arg) |
---|
625 | print(argv) |
---|
626 | if len(argv) == 0: |
---|
627 | """ |
---|
628 | Iterate only Main Thread, print only tasks and main |
---|
629 | """ |
---|
630 | cluster = lookup_cluster() |
---|
631 | if not cluster: |
---|
632 | print("Could not find Main Cluster") |
---|
633 | return |
---|
634 | |
---|
635 | # only tasks and main |
---|
636 | self.print_threads_by_cluster(cluster, False) |
---|
637 | |
---|
638 | elif len(argv) == 1: |
---|
639 | if argv[0] == 'help': |
---|
640 | self.print_usage() |
---|
641 | # push task |
---|
642 | elif argv[0].isdigit(): |
---|
643 | cluster = lookup_cluster() |
---|
644 | if not cluster: |
---|
645 | print("Could not find Main Cluster") |
---|
646 | return |
---|
647 | |
---|
648 | try: |
---|
649 | tid = int(argv[0]) |
---|
650 | except: |
---|
651 | print("'{}' not a valid thread id".format(argv[0])) |
---|
652 | self.print_usage() |
---|
653 | return |
---|
654 | |
---|
655 | # by id, userCluster |
---|
656 | self.switchto_id(tid, cluster) |
---|
657 | |
---|
658 | elif argv[0].startswith('0x') or argv[0].startswith('0X'): |
---|
659 | self.switchto(argv[0]) # by address, any cluster |
---|
660 | # print tasks |
---|
661 | elif argv[0] == 'all': |
---|
662 | self.print_all_threads() # all tasks, all clusters |
---|
663 | else: |
---|
664 | """ |
---|
665 | Print out all the tasks available in the specified cluster |
---|
666 | @cluster_name: str |
---|
667 | """ |
---|
668 | print("cfathread by name") |
---|
669 | cluster = lookup_cluster(argv[0]) |
---|
670 | if not cluster: |
---|
671 | return |
---|
672 | |
---|
673 | # all tasks, specified cluster |
---|
674 | self.print_threads_by_cluster(cluster, True) |
---|
675 | |
---|
676 | elif len(argv) == 2: |
---|
677 | # push task |
---|
678 | self.pushtask_by_id(argv[0], argv[1]) # by id, specified cluster |
---|
679 | else: |
---|
680 | print('Invalid arguments') |
---|
681 | self.print_usage() |
---|
682 | |
---|
683 | ############ |
---|
684 | class PrevThread(gdb.Command): |
---|
685 | """Switch back to previous task on the stack""" |
---|
686 | usage_msg = 'prevtask' |
---|
687 | |
---|
688 | def __init__(self): |
---|
689 | super(PrevThread, self).__init__('prevtask', gdb.COMMAND_USER) |
---|
690 | |
---|
691 | def invoke(self, arg, from_tty): |
---|
692 | """ |
---|
693 | @arg: str |
---|
694 | @from_tty: bool |
---|
695 | """ |
---|
696 | global STACK |
---|
697 | if len(STACK) != 0: |
---|
698 | # must be at frame 0 to set pc register |
---|
699 | gdb.execute('select-frame 0') |
---|
700 | |
---|
701 | # pop stack |
---|
702 | stack_info = STACK.pop() |
---|
703 | pc = get_addr(stack_info.pc) |
---|
704 | sp = stack_info.sp |
---|
705 | fp = stack_info.fp |
---|
706 | |
---|
707 | # pop sp, fp, pc from global stack |
---|
708 | adjust_stack(pc, fp, sp) |
---|
709 | |
---|
710 | # must be at C++ frame to access C++ vars |
---|
711 | gdb.execute('frame 1') |
---|
712 | else: |
---|
713 | print('empty stack') |
---|
714 | |
---|
715 | class ResetOriginFrame(gdb.Command): |
---|
716 | """Reset to the origin frame prior to continue execution again""" |
---|
717 | usage_msg = 'resetOriginFrame' |
---|
718 | def __init__(self): |
---|
719 | super(ResetOriginFrame, self).__init__('reset', gdb.COMMAND_USER) |
---|
720 | |
---|
721 | def invoke(self, arg, from_tty): |
---|
722 | """ |
---|
723 | @arg: str |
---|
724 | @from_tty: bool |
---|
725 | """ |
---|
726 | global STACK |
---|
727 | if len(STACK) != 0: |
---|
728 | stack_info = STACK.pop(0) |
---|
729 | STACK.clear() |
---|
730 | pc = get_addr(stack_info.pc) |
---|
731 | sp = stack_info.sp |
---|
732 | fp = stack_info.fp |
---|
733 | |
---|
734 | # pop sp, fp, pc from global stack |
---|
735 | adjust_stack(pc, fp, sp) |
---|
736 | |
---|
737 | # must be at C++ frame to access C++ vars |
---|
738 | gdb.execute('frame 1') |
---|
739 | #else: |
---|
740 | #print('reset: empty stack') #probably does not have to print msg |
---|
741 | |
---|
742 | Clusters() |
---|
743 | Processors() |
---|
744 | ResetOriginFrame() |
---|
745 | PrevThread() |
---|
746 | Threads() |
---|
747 | |
---|
748 | # Local Variables: # |
---|
749 | # mode: Python # |
---|
750 | # End: # |
---|