DBG is a hint instruction. It is optional whether
it is implemented or not. If it is not implemented, it behaves as
NOP. The assembler produces a diagnostic message
if the instruction executes as
NOP on the target.
DBG executes as a
in ARMv6K and ARMv6T2.
Debug hint provides a hint to a debugger and related tools. See your debugger and related tools documentation to determine the use, if any, of this instruction.