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Some targets support kernel object display. Using this facility, GDB communicates specially with the underlying operating system and can display information about operating system-level objects such as mutexes and other synchronization objects. Exactly which objects can be displayed is determined on a per-OS basis.
Use the set os
command to set the operating system. This tells
GDB which kernel object display module to initialize:
(gdb) set os cisco |
If set os
succeeds, GDB will display some information
about the operating system, and will create a new info
command
which can be used to query the target. The info
command is named
after the operating system:
(gdb) info cisco List of Cisco Kernel Objects Object Description any Any and all objects |
Further subcommands can be used to query about particular objects known by the kernel.
There is currently no way to determine whether a given operating system is supported other than to try it.