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2.2.4.  Adding Commands to GDB

GDB's command handling is intended to be extensible. A set of functions (defined in cli-decode.h) provide that extensibility.

GDB groups its commands into a number of command lists (of struct cmd_list_element), pointed to by a number of global variables (defined in cli-cmds.h). Of these, cmdlist is the list of all defined commands. Separate lists define sub-commands of various top level commands. For example infolist is the list of all info sub-commands.

Commands are also classified according the the area they address, for example commands that provide support, commands that examine data, commands for file handling etc. These classes are specified by enum command_class, defined in command.h. These classes provide the top level categories in which help will be given.

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