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@c  COPYRIGHT (c) 1988-2002.

@c  On-Line Applications Research Corporation (OAR).

@c  All rights reserved.

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@c  fatalerr.t,v 1.1 2002/07/30 21:43:53 joel Exp

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@chapter Default Fatal Error Processing

@section Introduction

Upon detection of a fatal error by either the

application or RTEMS the fatal error manager is invoked.  The

fatal error manager will invoke the user-supplied fatal error

handlers.  If no user-supplied handlers are configured,  the

RTEMS provided default fatal error handler is invoked.  If the

user-supplied fatal error handlers return to the executive the

default fatal error handler is then invoked.  This chapter

describes the precise operations of the default fatal error

handler.

@section Default Fatal Error Handler Operations

The default fatal error handler which is invoked by

the @code{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:

@itemize @bullet

@item disables processor interrupts,

@item places the error code in @b{r0}, and

@item executes an infinite loop (@code{while(0);} to

simulate a halt processor instruction.

@end itemize