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/*
* Internal Error Handler
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/score/interr.h>
#include <rtems/score/sysstate.h>
#include <rtems/score/userext.h>
/*PAGE
*
* _Internal_error_Occurred
*
* This routine will invoke the fatal error handler supplied by the user
* followed by the the default one provided by the executive. The default
* error handler assumes no hardware is present to help inform the user
* of the problem. Halt stores the error code in a known register,
* disables interrupts, and halts the CPU. If the CPU does not have a
* halt instruction, it will loop to itself.
*
* Input parameters:
* the_source - what subsystem the error originated in
* is_internal - if the error was internally generated
* the_error - fatal error status code
*
* Output parameters:
* As much information as possible is stored in a CPU dependent fashion.
* See the CPU dependent code for more information.
*
* NOTE: The the_error is not necessarily a directive status code.
*/
/*
* Ugly hack.... _CPU_Fatal_halt() disonnects the bdm. Without this
* change, the_error is only known only to the cpu :).
*
* From "bsp.h" which is not yet available in the arch tree during
* this phase of install. jsg
*/
void outbyte(char);
void bsp_cleanup( void );
#define RAW_PUTS(str) \
{ register char *ptr = str; \
while (*ptr) outbyte(*ptr++); \
}
#define RAW_PUTI(n) { \
register int i, j; \
\
RAW_PUTS("0x"); \
for (i=28;i>=0;i -= 4) { \
j = (n>>i) & 0xf; \
outbyte( (j>9 ? j-10+'a' : j+'0') ); \
} \
}
void volatile _Internal_error_Occurred(
Internal_errors_Source the_source,
boolean is_internal,
unsigned32 the_error
)
{
Internal_errors_What_happened.the_source = the_source;
Internal_errors_What_happened.is_internal = is_internal;
Internal_errors_What_happened.the_error = the_error;
_User_extensions_Fatal( the_source, is_internal, the_error );
_System_state_Set( SYSTEM_STATE_FAILED );
/* try to print error message to outbyte */
RAW_PUTS("\r\nRTEMS: A fatal error has occured.\r\n");
RAW_PUTS("RTEMS: fatal error ");
RAW_PUTI( the_error );
RAW_PUTS(".\r\n");
/* configure peripherals for a safe exit */
bsp_cleanup();
_CPU_Fatal_halt( the_error );
/* will not return from this routine */
}
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