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doc: Describe new default error handler for Sparc

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Daniel Cederman
2015-01-12 11:24:16 +01:00
committed by Daniel Hellstrom
parent 8d8573acc8
commit b92f737c24
1 changed files with 12 additions and 4 deletions
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doc/cpu_supplement/sparc.t
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@@ -951,10 +951,18 @@ handler.
The default fatal error handler which is invoked by The default fatal error handler which is invoked by
the fatal_error_occurred directive when there is no user handler the fatal_error_occurred directive when there is no user handler
configured or the user handler returns control to RTEMS. The configured or the user handler returns control to RTEMS.
default fatal error handler disables processor interrupts to
level 15, places the error code in g1, and goes into an infinite If the BSP has been configured with @code{BSP_POWER_DOWN_AT_FATAL_HALT}
loop to simulate a halt processor instruction. set to true, the default handler will disable interrupts
and enter power down mode. If power down mode is not available,
it goes into an infinite loop to simulate a halt processor instruction.
If @code{BSP_POWER_DOWN_AT_FATAL_HALT} is set to false, the default
handler will place the value @code{1} in register @code{g1}, the
error source in register @code{g2}, and the error code in register
@code{g3}. It will then generate a system error which will
hand over control to the debugger, simulator, etc.
@section Thread-Local Storage @section Thread-Local Storage