To set a breakpoint at the machine-instruction level, use the stopi command. The command accepts any event specification. The syntax for the stopi command is:
stopi event-specification [modifier]
Commonly used forms of the stopi command are:
stopi [at address] [-if cond] stopi in function [-if cond]
For more information, see stopi Command.
Use the stopi command to set a breakpoint at a specific address:
(dbx) stopi at address
For example:
(dbx) nexti stopped in hand::ungrasp at 0x12638 (dbx) stopi at &hand::ungrasp (3) stopi at &hand::ungrasp (dbx)