RTEMS 4.6.1 On-Line Library

Default Fatal Error Processing Default Fatal Error Handler Operations

RTEMS PowerPC Applications Supplement

5.2: Default Fatal Error Handler Operations

The default fatal error handler which is invoked by the rtems_fatal_error_occurred directive when there is no user handler configured or the user handler returns control to RTEMS. The default fatal error handler performs the following actions:

places the error code in r3, and
executes a trap instruction which results in a Program Exception.

If the Program Exception returns, then the following actions are performed:

disables all processor exceptions by loading a 0 into the MSR, and
goes into an infinite loop to simulate a halt processor instruction.

RTEMS PowerPC Applications Supplement