int03

Breakpoint trap (interrupt 3)

Raises interrupt 3, the breakpoint trap, using the one-byte encoding that debuggers insert.

8086 and later

Intel's reference: INTn/INTO/INT3/INT1

CFPFAFZFSFTFIFDFOF –––––0●––
  • ● set from the result
  • 0 always 0
  • – not changed

Forms

  • int03

Unlike int 3, it is not subject to the virtual-8086 IOPL check or to interrupt redirection. Under Linux, a program that executes it receives SIGTRAP.