Nios II (Debugging with GDB)
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Gdb/docs/latest/gdb/Nios-II
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21.4.7 Nios II
When GDB is debugging the Nios II architecture, it provides the following special commands:
set debug nios2This command turns on and off debugging messages for the Nios II target code in GDB.
show debug nios2Show the current setting of Nios II debugging messages.